JP2008096543A - Display device - Google Patents

Abstract

A display device capable of being thinned is provided.
A timepiece 1 as a display device includes a cylindrical frame 3 and a belt-like electrophoretic display panel 20 that is arranged over the entire circumference of the frame 3 and displays various types of information. Prepare. The primary battery 7 is disposed between both ends of the electrophoretic display panel 20 wound along the outer peripheral surface of the body 31. Therefore, compared with the case where the electrophoretic display panel 20 and the primary battery 7 are arranged so as to overlap each other, the dimension in the thickness direction at the arrangement portion of the electrophoretic display panel 20 and the primary battery 7 can be reduced. It is possible to reduce the thickness.
[Selection] Figure 4

Description

  The present invention relates to a display device. More specifically, the present invention relates to a display device including a display panel that is arranged on the peripheral surface of a cylindrical frame over substantially the entire periphery.

2. Description of the Related Art In recent years, a display device having a display unit that displays various types of information, a battery that supplies power to each unit, and a bobbin-shaped (cylindrical) frame has been developed as a display device that can be worn on an arm. (For example, refer to Patent Document 1).
In such a display device, the display unit includes a flexible substrate formed of a flexible member such as a resin, and a display panel such as a liquid crystal display panel is disposed on the flexible substrate. The battery has a shape such as a lithium polymer battery along the peripheral surface of the frame. These display units and batteries are arranged in a state of overlapping each other along the peripheral surface of the frame. With such a configuration, various information is displayed along the peripheral surface of the display device.

Japanese Patent Laying-Open No. 2005-250442 (FIGS. 5 and 6)

  However, in the display device described in Patent Document 1, since the display unit and the battery are arranged along the circumferential surface of the cylindrical frame in a state where they are overlapped with each other, the dimension in the thickness direction at these arrangement portions is small. There is a problem that it becomes large and it becomes difficult to reduce the thickness.

  An object of the present invention is to provide a display device that can be thinned.

  A display device according to the present invention includes a cylindrical frame, a strip-shaped display panel that is arranged over the entire circumference of the frame and displays various types of information, and a battery that is a driving power source for the display panel. And both end portions along the circumferential direction of the display panel are spaced apart from each other by a predetermined dimension, and the battery is disposed between both end portions of the display panel.

Here, examples of the display device include a wrist watch and a mobile phone. Examples of the strip-shaped display panel for displaying various information include an electrophoretic display panel and an organic EL (Electro Luminescence) panel. Further, the battery means a primary battery such as a button-type battery or a rechargeable secondary battery.
Note that at least an interval in which the battery can be disposed is provided between both ends of the display panel. However, it is preferable that the interval is as small as possible because the display range of the display panel is widened.

  According to the present invention, since the battery is disposed between both ends of the display panel wound along the peripheral surface of the frame, the display panel and the battery do not overlap with each other. Can be made smaller in the thickness direction of the display panel and the battery placement portion, and the thickness can be reduced.

The display device of the present invention preferably includes a cover member that covers at least the battery.
Here, the range covered by the cover member may be at least the entire battery, but the cover member may cover both the ends of the display panel and the battery, and may also cover both ends of the display panel. May be.
According to this invention, since the cover member covers at least the battery, it is possible to hide the battery that is not desired to be exposed in design, to enhance the decorativeness, and to obtain a good appearance.
In particular, the cover member preferably has a shape along the peripheral surface of the frame. For example, when a non-flexible battery such as a button battery is arranged on the peripheral surface of the frame, the battery cannot be bent along the peripheral surface of the frame, but the cover has a shape along the peripheral surface of the frame. By covering the battery with the member, it is possible to obtain a uniform appearance along the entire peripheral surface of the frame.

In the display device of the present invention, the display panel is provided with a cover member position display portion for positioning the cover member, and the cover member position display portion is provided so as to be able to display when the cover member is disposed. Preferably it is.
According to such a configuration, since the cover member position display unit is provided on the display panel, the cover member is displayed in a state in which the cover member position display unit is displayed by lighting or the like during assembly work. Are arranged so that the both end portions of the cover and the cover member position display portion are aligned. In this manner, the cover member can be easily positioned. Therefore, the efficiency of the assembly work can be improved.
Further, after the cover member is positioned, the cover member position display unit can be turned off so that the cover member position display unit is not exposed and a good appearance can be obtained. .

In the display device according to the aspect of the invention, it is preferable that a protrusion that is in contact with the cover member and that can position the cover member is provided.
Here, the protrusions may be provided on the frame, or when an intermediate frame is provided between the frame and the display panel, the protrusions may be provided on the intermediate frame.
According to the present invention, since the protruding portion formed so as to be able to position the cover member by contacting the cover member is provided, the cover member can be easily positioned in a short time during the assembly work. As a result, the efficiency of the assembly work can be improved.

  In the display device of the present invention, the cover member includes photoelectric conversion means for converting light energy into electric energy, and the battery is formed of a secondary battery that stores the electric energy converted by the photoelectric conversion means. It is preferable.

  According to such a configuration, the cover member is formed by the photoelectric conversion means and the battery is formed by the secondary battery. Therefore, even if the electric energy stored in the secondary battery is supplied to each part, a new photoelectric element is provided. By storing the electric energy generated by the conversion means in the secondary battery, the electric energy can always be supplied. Thereby, compared with the case where a battery is formed with a primary battery, the exchange work of a regular primary battery can be omitted, and a user's burden can be made small. In addition, since a used primary battery to be discarded is not generated, an environmentally friendly display device can be obtained.

  In the display device of the present invention, the frame includes a body and a lid member, the body includes a cylinder part and a flange part protruding outward from one end of the cylinder part, and the lid member includes: It has a plate shape, has an opening with the same size and shape as the end shape of the tube portion, has an outer shape with the same size and shape as the outer periphery shape of the flange portion, and is provided at the other end of the tube portion. The display panel is disposed on the outer peripheral surface of the tubular portion so as to be detachable so as to face the flange portion, and a tubular translucent member is disposed on the outer peripheral surface of the display panel. The optical member is sandwiched between the collar portion and the lid member, and the battery is disposed between the tube portion and the light transmissive member, and is moved toward the lid member by removing the lid member. It is preferable that the replacement is provided.

  According to such a configuration, the battery is disposed between the cylinder portion of the trunk and the translucent member, and is provided so that it can be exchanged by being moved in the direction of the lid member by removing the lid member. By simply removing the member from the frame, the battery can be removed by moving the battery in the direction of the lid member, and the battery can be easily replaced. Further, since it is not necessary to remove the light-transmitting member when replacing the battery, it is possible to prevent foreign matters such as dust and debris from entering the inside of the frame.

  In the display device of the present invention, the frame includes a body and a lid member, the body includes a cylinder part and a flange part protruding outward from one end of the cylinder part, and the lid member includes: It has a plate shape, has an opening with the same size and shape as the end shape of the tube portion, has an outer shape with the same size and shape as the outer periphery shape of the flange portion, and is provided at the other end of the tube portion. A substantially cylindrical inner frame is disposed on the outer peripheral surface of the cylindrical portion, and the display panel is wound around the outer peripheral surface of the intermediate frame. A tubular translucent member is disposed on the surface, the inner frame and the translucent member are sandwiched between the flange and the lid member, and the cover member is covered with the translucent member. It is preferable.

According to such a configuration, the display panel and the cover member are covered with the translucent member, so that the display panel and the cover member are securely fixed and protected from scratches and dirt.
In addition, since the middle frame, the display panel, and the translucent member disposed on the outer peripheral surface of the cylinder portion of the trunk are sandwiched between the collar portion of the trunk and the lid member, the middle frame, the display panel, and the translucent member can be securely Can be fixed to the frame and easily assembled.

  According to the display device of the present invention, it is possible to reduce the dimension in the thickness direction of the display panel and the battery arrangement portion, and to reduce the thickness.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the second and later embodiments described later, the same reference numerals are given to the same components and the same members as the components in the first embodiment described below, and the description will be simplified or omitted. .

[First Embodiment]
[1. overall structure]
FIG. 1 is a perspective view of a timepiece 1 as a display device of the present embodiment.
The watch 1 is a bracelet watch mounted on an arm or the like, in which a display module 2 having an electrophoretic display panel 20 is disposed on the outer peripheral surface of a cylindrical frame 3 over the entire circumference. On the panel 20, a numeric symbol indicating a time display is displayed.

2 and 3 are an exploded perspective view and a cross-sectional view of the timepiece 1, and FIG. 4 is a vertical cross-sectional view of the timepiece 1.
As shown in FIG. 2, the timepiece 1 includes a cylindrical frame 3, a substantially cylindrical middle frame 4 made of resin, and a transparent cylindrical cover glass 5 as a translucent member. A display module 2 indicated by a two-dot chain line in the drawing is wound around the outer periphery of the middle frame 4.

  The frame 3 is formed with a trunk 31 and a back lid 32 as a lid member. The body 31 includes a cylindrical portion 311 as a cylindrical portion and a flange portion 312 that protrudes outward from one end edge of the cylindrical portion 311 and has a substantially L-shaped cross section. Here, an axis A is illustrated as a virtual center axis of the cylindrical portion 311. A plurality of protrusions 313 having female threads in a direction parallel to the axis A are formed on the other edge of the cylindrical portion 311. The back cover 32 is plate-shaped, has an opening with the same size and shape as the circular shape at the end of the cylindrical portion 311, and has an outer shape with the same size and shape as the circular shape of the outer periphery of the collar portion 312. ing. In addition, the back cover 32 is fastened to the protruding portion 313 of the body 31 by a plurality of screws 33 and is provided to face the flange portion 312. Although specifically described later, the middle frame 4 is fitted on the outer periphery of the cylindrical portion 311. The cover glass 5 is fitted so as to cover the display module 2.

As shown in FIG. 3, the middle frame 4 and the cover glass 5 are sandwiched between the flange portion 312 and the back cover 32, and in the longitudinal direction (direction of the axis A in FIG. 2) of the cylindrical portion 311 shown in cross section in the drawing. Movement in parallel directions is restricted. The frame 3 is formed by the body 31 and the back cover 32.
As shown in FIG. 4, a primary battery (button-type battery) 7 serving as a battery for supplying power to each part is disposed between the cylindrical part 311 of the body 31 and the cover glass 5. The primary battery 7 is disposed in a region B sandwiched between both ends of the display module 2.

5 and 6 are a plan view and a longitudinal sectional view of the display module 2. In FIG. 5, the display module 2 is shown in a planar manner (not curved) for easy understanding. As shown in FIG. 5, the display module 2 includes a strip-shaped electrophoretic display panel 20 and a drive circuit unit 60 that drives the display panel 20.
The drive circuit unit 60 and the display panel 20 are manufactured separately and connected by a wiring member 61 such as an anisotropic conductive film (ACF).

[2. Display panel configuration]
The display panel 20 is provided in a strip shape over substantially the entire outer peripheral surface of the frame 3, and as shown in FIG. 6, the electric power provided between the display substrate 21, the transparent substrate 22, the display substrate 21 and the transparent substrate 22. The electrophoretic layer 23 is included. The timing information displayed on the display panel 20 is visually recognized through the transparent substrate 22 arranged on the front side. The transparent substrate 22 and the display substrate 21 are flexible printed circuits (FPC) formed from a flexible resin such as polyimide or polyester.
As shown in FIG. 6, such a display panel 20 is curved in a substantially cylindrical shape of approximately 360 °, and both end portions thereof are arranged with a predetermined distance therebetween.

As shown in FIG. 6, the display substrate 21 is formed relatively thin compared to the transparent substrate.
A plurality of microcapsules 230 are bonded to the top of the display substrate 21. The electrophoretic layer 23 is configured by the plurality of microcapsules 230. Details of the electrophoretic layer 23 will be described later.

  Further, the transparent substrate 22, the electrophoretic layer 23, the display substrate 21 and the like are sealed by the moisture resistant sheet 20A provided on the upper surface side of the transparent substrate 22 and the moisture resistant sheet 20B provided on the lower surface side of the display substrate 21, Intrusion of moisture into the electrophoretic layer 23 is prevented. Specifically, a hot melt material is applied as an adhesive layer on the inside of these moisture resistant sheets 20A and 20B, and the ends of the moisture resistant sheets 20A and 20B are adhered to each other with a vacuum laminator or the like. By bonding 20B to the display substrate 21 and the transparent substrate 22, the transparent substrate 22, the electrophoretic layer 23, the display substrate 21, and the like are sealed on the substrate end surface and the front and back surfaces.

[3. Configuration of drive circuit section]
Returning to FIG. 5, the drive circuit unit 60 is a flexible substrate formed of a flexible resin such as polyimide or polyester, like the substrates 21 and 22. A control controller 62 that controls the entire timepiece 1 and a display drive circuit element 63 that is configured by a driver IC and that performs display control of the display panel 20 are mounted on the drive circuit unit 60 without overlapping each other. . Such a drive circuit unit 60 is arranged in an inverted state toward the back side of the display panel 20 at the end of the display panel 20 as indicated by a two-dot chain line in FIG. The display drive circuit element 63 and the wiring member 61 are connected to each other although not shown in detail.

  FIG. 7 shows the electrical configuration of the timepiece 1. The control controller 62 mounted on the drive circuit unit 60 is electrically connected to the display panel 20, the primary battery 7, the button input unit 8 having operation buttons, and the oscillation unit 9. The oscillating unit 9 generates an oscillating pulse that is counted by a clock unit (not shown) to count the time.

[4. Configuration of electrophoresis layer and display by electrophoresis]
Next, an electrophoretic layer and display by electrophoresis in the display panel 20 will be described.
FIG. 8 is a schematic diagram showing the electrophoretic layer 23. The electrophoretic layer 23 is formed by densely arranging a large number of microcapsules 230, and each microcapsule 230 is filled with an electrophoretic particle dispersion 231 in which a large number of charged particles are dispersed. In the electrophoretic particle dispersion 231, black electrophoretic particles (hereinafter referred to as black particles) 231A and white electrophoretic particles (hereinafter referred to as white particles) 231B are mixed to form a two-color powder fluid system. An electrophoresis layer is configured. The black particles 231A and the white particles 231B are charged with different polarities, and in this embodiment, the black particles 231A are charged positively (positive) and the white particles 231B are charged negatively (negative).

A plurality of symbol electrodes 210 called segment electrodes for controlling display are provided on the upper surface of the display substrate 21. A transparent common electrode 220 made of ITO (Indium Tin Oxide) or the like is provided on the back surface of the transparent substrate 22 (the surface facing the display substrate 21). The common electrode 220 is provided over substantially the entire surface of the transparent substrate 22 facing the display substrate 21, and is an electrode common to each symbol electrode 210 to which a voltage is applied to each symbol electrode 210. Yes.
Returning to FIG. 1, the symbol electrode 210 is formed in a form in which 12 types of numeric symbols “1” to “12” indicating “hour” are designed in this embodiment. Note that there are a plurality of types of symbol electrodes 210, but when distinction is not necessary, these are collectively referred to as symbol electrodes 210. Of these symbol electrodes 210, “hour” is displayed in an area selected in accordance with the timing information.

That is, when the symbol electrode 210 is at a low level potential (L potential) and the common electrode 220 is at a high level potential (H potential), an electric field from the common electrode 220 toward the symbol electrode 210 is generated, and positively charged black particles While 231A moves to the symbol electrode 210 side, the negatively charged white particles 231B move to the common electrode 220 side. At this time, like the symbol “12” in FIG. 1, the display on the display panel 20 is white.
Contrary to the white display, when the symbol electrode 210 is set to a high level potential (H potential) and the common electrode 220 is switched to a low level potential (L potential), the electric field is inverted, and the display on the display panel 20 is Switch to black.

Further, by adjusting the movement amount of the black particles 231A and the white particles 231B according to the application time of the potential, the applied voltage, and the like, an intermediate color display of a color gradation between black and white is also possible. Symbols “1” to “11” other than symbol “12” are displayed in this intermediate color.
Note that when the application of the electric field is stopped, the black particles 231A and the white particles 231B do not move, so that the previous display color is maintained without changing the display color.
In addition, as one form of the symbol electrode 210, a decoration plate position display unit 211 that displays positions of both ends of the decoration plate 50 described later is formed.

[5. Middle frame configuration]
FIG. 9 is a perspective view of the middle frame 4. The middle frame 4 is for holding the state in which the display module 2 is curved in a cylindrical shape, and a holder housing member 43 for housing the collar side member 41, the back cover side member 42, and the battery holder 11 described later. And is formed from. In the collar side member 41 and the back cover side member 42, a part of the ring is discontinuous. A plurality of holding portions 410 and 420 for holding the display module 2 are formed on the edges of the side members 41 and 42, respectively.
The holder housing member 43 is formed in a substantially U shape, and similarly supports a plate-shaped battery holder 11 formed in a substantially U shape so as to be slidable in a direction parallel to the axis A. Side surfaces orthogonal to the axis A of the buttock side member 41 and the back cover side member 42 are bonded together so that the discontinuous portions coincide with each other, and the holder housing member 43 is attached to the discontinuous portions.
A battery holder 11, which will be described later, capable of storing the primary battery 7 is supported by the holder storage member 43 so as to be slidable along the axis A. Then, with the battery holder 11 disposed in the space surrounded by the frame 3 and the cover glass 5 together with the middle frame 4, the back cover 32 is removed, and the battery holder 11 is slid in the direction of the back cover 32. The primary battery 7 can be replaced.

  A slender gap C is formed between the buttock side member 41 and the back cover side member 42 and the holder storage member 43. As shown in FIG. 4, the gap C is formed so that the drive circuit unit 60 of the display module 2 can be inserted.

[6. Configuration of battery compartment]
Returning to FIG. 4, the primary battery 7 is disposed between the cylindrical portion 311 of the trunk 31 and the cover glass 5 in a state of being accommodated in the battery holder 11. Further, a metal-side positive-side holding member 12 having a U-shaped cross-section that covers the outer peripheral surface of the battery holder 11 and presses the positive-electrode side of the primary battery 7, and is disposed between the primary battery 7 and the cylindrical portion 311. A negative electrode side pressing member 13 made of metal that holds the negative electrode side of the battery 7 is provided. In this way, the primary battery 7 is disposed between both end portions of the electrophoretic display panel 20 in the circumferential direction of the cylindrical portion 311 of the trunk 31. The positive electrode side pressing member 12 and the negative electrode side pressing member 13 are each connected to the drive circuit unit 60 of the display module 2 by a conductive wire or the like, and supply power to the control controller 62 in the drive circuit unit 60. The battery holder 10 is constituted by the battery holder 11, the positive electrode side pressing member 12, and the negative electrode side pressing member 13.

As shown in FIG. 4, a decorative plate 50 as a cover member is disposed on the outer peripheral side of the battery storage unit 10. The decorative plate 50 is arranged in a state of being bent along the outer periphery of the trunk 31, and the surface is decorated. The decorative board 50 is disposed so as to cover both ends of the display panel 20. In this way, members such as the primary battery 7 disposed between the both end portions of the display panel 20 are covered with the decorative plate 50.
FIG. 10 is a perspective view of the decorative board 50. FIG. 11 is a partial plan view showing a position where the decorative board 50 is installed. As shown in FIG. 10, the decorative plate 50 is formed in a curved shape along the outer peripheral shape of the frame 3. Both end portions along the outer peripheral direction of the frame 3 in the planar shape of the decorative plate 50 are formed in an arc shape as shown in FIG.

At both ends in the outer peripheral direction of the display panel 20, a decorative board position display section (hereinafter referred to as a position display section) 211 as a cover member position display section for positioning the decorative board 50 is formed. 211 is provided so that it can be lit and displayed when the decorative board 50 is arranged. The position display portions 211 that are formed at both ends of the display panel 20 are formed in a linear shape. The distance between the position display portions 211 along the outer peripheral surface of the frame 3 is set to be the same as the length of the decorative plate 50 in the direction along the outer peripheral surface of the frame 3. In this way, both end portions of the decorative plate 50 are provided so as to be arranged according to the position display portion 211 formed on the display panel 20.
Although illustration is omitted in the present embodiment, a complicated and highly processed pattern is formed on the surface of the decorative board 50, and thus the decorative board 50 has a high-class feeling.

[7. Button input configuration]
Returning to FIG. 3, the button input unit 8 includes an operation button 81, an arm unit 82, and a touch sensor 83. The operation button 81 is disposed so as to be exposed to the outside from the side surface of the collar portion 312 of the trunk 31, and is supported so as to protrude and retract toward the inside of the frame 3. An end of the operation button 81 on the inner side of the frame 3 is in contact with the arm portion 82. The arm part 82 is slidably arranged in the frame 3 in accordance with the position of the operation button 81 in the projecting and retracting state. Further, the arm portion 82 has a coil spring 821, and is biased by the coil spring 821 in a direction in which the operation button 81 is projected. In this way, the operation button 81 is normally held in a protruding state. A touch sensor 83 is disposed on the end of the arm portion 82 opposite to the operation button 81. When the operation button 81 is in the protruding state, the tip of the arm portion 82 does not contact the touch sensor 83, and when the operation button 81 is in the immersive state, the tip of the arm portion 82 is in the direction of the touch sensor 83. It moves and comes into contact with the touch sensor 83. The touch sensor 83 is connected to the control controller 62 by a conducting wire or the like.

  In this way, when the operation button 81 is in an immersive state by a user operation, a signal indicating the state of the operation button 81 is sent from the touch sensor 83 to the control controller 62, and the control controller 62 causes the display panel 20 to be displayed. To control. Therefore, the user can operate the timepiece 1 with the operation button 81.

[8. How to assemble watch]
Next, a method for assembling the timepiece 1 will be described.
First, as shown in FIG. 2, the display module 2 is wound around the outer periphery of the middle frame 4 so that both end portions of the display panel 20 sandwich the holder housing member 43 of the middle frame 4, and as shown in FIG. Further, the display module 2 is arranged so that the drive circuit unit 60 passes through the gap C and is between the cylindrical unit 311 and the middle frame 4. In this way, the drive circuit unit 60 of the display module 2 is arranged in a state where it is bent by approximately 180 ° with respect to the display panel 20. Next, the primary battery 7 is stored in the battery storage unit 10, and the battery storage unit 10 is attached to the holder storage member 43. Next, as shown in FIG. 2, the middle frame 4 is fitted into the outer periphery of the barrel 31.
Next, the decorative plate 50 is disposed at a predetermined position so as to cover the outer periphery of the battery housing unit 10. A detailed positioning method of the decorative board 50 will be described later. Next, the cover glass 5 is fitted so as to cover the outer periphery of the display module 2. Finally, the back cover 32 is screwed to the body 31.
In this way, the timepiece 1 is assembled such that the primary battery 7 is disposed between both ends of the display panel 20 and the decorative plate 50 covers the primary battery 7.

[9. Decorative plate positioning method]
Next, a positioning method when arranging the decorative board 50 will be described.
First, the decoration board position display part 211 of the display panel 20 shown in FIG. 11 is turned on. Next, the display panel 20 is arranged so that both ends of the decorative plate 50 are aligned with the position display unit 211. Finally, the position display unit 211 is turned off. It should be noted that the position display unit 211 can be turned on only at the time of positioning and not on at the time of normal use.
In this way, the decorative board 50 is positioned smoothly.

[10. Replacing the primary battery]
Next, a method for replacing the primary battery 7 will be described.
First, the screw 33 shown in FIG. Next, the battery holder 11 shown in FIGS. 4 and 9 is slid along the axis A, and the battery holder 11 is removed from the middle frame 4. Then, the primary battery 7 stored in the battery holder 11 is replaced. Further, the battery holder 11 is attached to the middle frame 4 in the reverse order to that described above, and the back cover 32 is screwed to the barrel 31.
In this way, the primary battery 7 is replaced.

[11. Effects of this embodiment]
According to this embodiment, there are the following effects.
(1) Since the primary battery 7 is disposed between both end portions of the electrophoretic display panel 20 wound along the outer peripheral surface of the body 31, the display panel 20 and the primary battery 7 are disposed so as to overlap each other. Compared to the case, the dimension in the thickness direction in the arrangement portion of the display panel 20 and the primary battery 7 can be reduced, and the thickness can be reduced.
(2) Since the decorative plate 50 covers between both ends of the display panel 20 including the primary battery 7, the primary battery 7, the battery housing 10, etc. can be hidden, and these are not exposed through the cover glass 5. Therefore, a good appearance can be obtained.

(3) By decorating the surface of the decorative board 50 with letters, numbers, alphabets, marks, patterns, etc., the decorativeness can be enhanced. For example, it is possible to provide a high-class feeling by using a complicated and sophisticated pattern.
(4) Since the decorative plate 50 is curved along the outer peripheral surface of the barrel 31 together with the display panel 20, the primary battery 7 is covered with the decorative plate 50, so that a sense of unity along the outer peripheral surface of the barrel 31 as a whole is achieved. A certain appearance can be obtained.

(5) Since the display panel 20 is provided with the decoration plate position display unit 211, in the assembly operation, the decoration plate 50 is displayed on the display panel 20 with the position display unit 211 displayed by lighting or the like. If it arrange | positions, positioning of the decorating board 50 can be performed easily. Therefore, the efficiency of the assembly work can be improved. Further, after the positioning of the decorative board 50 is completed, the position display unit 211 can be prevented from being displayed by turning off the light and so on, so that the position display unit 211 is not exposed and a good appearance can be obtained.
(6) Since the display panel 20 and the decorative plate 50 are covered with the cover glass 5, the display panel 20 and the decorative plate 50 are securely fixed and protected from scratches and dirt. Further, since the middle frame 4, the display panel 20, and the cover glass 5 are sandwiched between the flange 312 and the back cover 32 of the trunk 31, the middle frame 4, the display panel 20, and the cover glass 5 are securely fixed to the frame 3. Can be easily assembled.

(7) By simply removing the back cover 32 from the barrel 31, the battery holder 11 can be slid and removed from the middle frame 4, and the primary battery 7 can be replaced. Therefore, the battery can be easily replaced. Further, since it is not necessary to disassemble the cover glass 5 and the inner frame 4 when replacing the battery, it is possible to prevent foreign matters such as dust and scraps from entering the frame 3.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 12 shows an electrical configuration of the timepiece 1A of the present embodiment. FIG. 13 is a longitudinal sectional view of the timepiece 1A.
In this embodiment, a secondary battery 7A is adopted as a battery, and this secondary battery 7A is arranged at the position of the primary battery 7 in the first embodiment, and a photoelectric conversion means (solar battery) 50A as a cover member is provided. The point provided is different from the first embodiment. Other than this, the basic configuration of the present embodiment is the same as that of the first embodiment.

  That is, the timepiece 1A includes a solar cell 50A that can convert light energy into electrical energy, and a secondary battery 7A that stores electrical energy generated by the solar cell 50A. As shown in FIG. 12, the solar cell 50A and the secondary battery 7A are electrically connected to the control controller 62, respectively.

  As shown in FIG. 13, the middle frame 4A is formed of a collar side member 41, a back cover side member 42, and a secondary battery storage member 43A, and the secondary battery 7A is stored in the secondary battery storage member 43A. ing. In addition, the secondary battery 7A is disposed between both ends of the electrophoretic display panel 20 in the same manner as the primary battery 7 of the first embodiment.

As shown in FIG. 13, the solar cell 50 </ b> A has a two-layer structure including a solar cell main body 51 </ b> A and a support member 52 </ b> A, and is disposed along the outer peripheral surface of the trunk 31. The solar cell main body 51A is formed in a thin plate shape having flexibility. The support member 52 </ b> A has a shape along the outer peripheral surface of the cylindrical portion 311 of the body 31 together with the display panel 20. And the solar cell main-body part 51A is affixed on the outer peripheral surface of 52 A of support members. Similarly to the decorative plate 50 of the first embodiment, the solar cell 50A is provided between the cover glass 5 and the cylindrical portion 311 of the body 31, and covers both ends of the secondary battery 7A and the display panel 20. .
In such a configuration, the solar cell 50A converts light energy into electrical energy. The generated electrical energy is stored in the secondary battery and is appropriately supplied from the secondary battery to each unit.

According to this embodiment, in addition to the effects substantially the same as the effects (1) to (7), there are the following effects.
(8) Since the solar battery 50A and the secondary battery 7A are provided, even if the electric energy stored in the secondary battery 7A is supplied to each part, the electric energy newly generated in the solar battery 50A is supplied to the secondary battery. By storing in 7A, electric energy can always be supplied. Thereby, compared with the case where a battery is formed with a primary battery, the replacement | exchange operation | work of a regular battery can be skipped and a user's burden can be made small. Moreover, since there is no used battery to be discarded, the timepiece 1A can be made environmentally friendly.

(9) Since the solar cell main body 51A can be formed into a flexible thin plate shape, the solar cell main body 51A is arranged on the outer peripheral surface of the support member 52A, whereby the thickness direction of the solar cell 50A is increased. The dimension of can be reduced. Thereby, the dimension in the thickness direction of the timepiece 1A in the arrangement portion of the solar cell 50A can be reduced, and an overall excellent appearance can be maintained.

[Modification of the present invention]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

  For example, in the first embodiment, the decorative panel position display unit 211 is provided on the display panel 20. However, in the present invention, as a configuration for positioning the decorative plate 50, as shown in FIG. , 420 may be formed with inwardly protruding portions 411, 421. Positioning of the decorative plate 50 in the circumferential direction can be performed by bringing the end portions of the decorative plate 50 in the circumferential direction into contact with the protrusions 411 and 421. Thereby, the positioning of the decorative board 50 can be easily performed in a short time during the assembly work, and the efficiency of the assembly work can be improved. In the present invention, when the middle frame 4 is not provided, the case 3 may be provided with the above-described protrusions so that the decorative plate 50 is positioned.

  In the first embodiment, the timepiece 1 including the frame 3 having a predetermined diameter and the decorative plate 50 has been described as an example. For example, a frame having a different diameter and a diameter of the frame are supported. It is good also as a timepiece of a different size provided with the decorative board which has the length dimension of the circumferential direction, and the display panel 20 same as 1st Embodiment. When assembling such a timepiece, as in the first embodiment, after arranging the display panel 20 on the outer peripheral surface of the frame, a decorative plate is arranged so as to cover both ends of the display panel 20. Can do. Thus, even when the diameter dimensions of the frame 3 are different, the common display panel 20 can be used only by changing the length dimension of the decorative plate 50 in the circumferential direction. Accordingly, the parts can be shared, and the cost can be reduced.

  Further, in the first embodiment, the cover glass 5 is employed as the translucent member. However, the translucent member may be any member as long as it can visually recognize the display of the display panel 20, and has a translucent resin. A cover made of metal or the like may be used. Moreover, as long as it has translucency, a colored thing may be sufficient.

Further, similarly to the primary battery 7 in the first embodiment, the secondary battery 7A in the second embodiment may be housed and supported so as to be slidable when the back cover is removed. If it does in this way, when exchanging secondary battery 7A, exchanging work will become easy, and penetration of a foreign substance into frame 3 can be controlled at the time of battery exchange.
Further, in the first embodiment, the frame 3 is described as an example in which the frame 3 is formed in a cylindrical shape by the two members of the L-shaped barrel 31 and the back cover 32. However, in the present invention, the barrel 31 is used. The cylindrical portion 311 and the flange portion 312 that constitute the frame 3 may be manufactured separately, and the frame 3 may be composed of three parts including the cylindrical portion 311, the flange portion 312, and the back cover 32.

Further, in the first embodiment, the middle frame 4 includes the buttock side member 41 and the back cover side member 42, but these may be integrally formed.
Moreover, it can also be set as the display apparatus arrange | positioned so that the battery included in this invention may overlap with a display panel, and the solar cell as a cover member may be arrange | positioned so that the both ends of a display panel may be covered.

In the first embodiment, the decorative plate 50 as the cover member is formed so as to extend to the upper surfaces of both ends of the electrophoretic display panel 20 so as to cover the both ends. It suffices if it is formed so as to cover the primary battery 7. However, by forming the decorative plate 50 so as to cover both ends of the display panel 20, the wiring member 61 at the end of the display panel 20 can be reliably covered, and the design can be improved.
In the first embodiment, the timepiece 1 has been described as an example. However, in the present invention, for example, a mobile phone, a digital camera, a PDA (Personal Digital Assistants), or the like may be used. In short, any display device can be used as long as it can exhibit a function of displaying various types of information in addition to the time display. Further, the display device is not limited to the one used by being worn on the arm or the like, and may be one that is used by being placed at an arbitrary place or one that is suspended from a wall or the like with a chain or the like.

In the first embodiment, the electrophoretic display panel 20 has been described as an example of the display panel. However, the display panel of the present invention may be, for example, an organic EL panel. In short, any band-shaped display panel that can be bent into a substantially cylindrical shape may be used.
In the first embodiment, the primary battery 7 is described as an example of the battery. However, a secondary battery may be used as the battery. In this case, as a charging method, it is possible to provide a charging terminal on the frame 3 as is usually done, but it is configured to supply power wirelessly by a method such as electromagnetic induction. It is also possible.
Moreover, although 1st Embodiment demonstrated the flame | frame as cylindrical shape, the flame | frame of this invention is not restricted to a cylindrical shape, For example, a polygonal cylindrical shape may be sufficient.

In addition, the best configuration, method and the like for carrying out the present invention have been disclosed above, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

The perspective view which shows the timepiece as a display apparatus which concerns on 1st Embodiment of this invention. The disassembled perspective view which shows the said timepiece. The cross-sectional view which shows the said timepiece. The longitudinal cross-sectional view which shows the said timepiece. The top view which shows the display module in the said timepiece. The longitudinal cross-sectional view which shows the said display module. The figure which shows the electrical constitution of the said timepiece. The schematic diagram which shows the electrophoresis layer in the said display module. The perspective view of the inner frame in the said timepiece. The perspective view of the cover member in the said timepiece. The partial top view which shows the position where the cover member in the said timepiece is installed. The figure which shows the electrical constitution of the timepiece which concerns on 2nd Embodiment of this invention. The longitudinal cross-sectional view which shows the said timepiece. The partial top view which shows the modification of the structure for positioning of the said cover member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1A ... Timepiece (display device), 3 ... Frame, 4, 4A ... Middle frame, 5 ... Cover glass (translucent member), 7 ... Primary battery (battery), 7A ... Secondary battery (battery), 20 ... Electrophoretic display panel (display panel), 31 ... barrel, 32 ... back cover (lid member), 50 ... decorative plate (cover member), 50A ... photoelectric conversion means (cover member), 211 ... decorative plate position display unit (cover) (Member position display part), 311 ... cylindrical part (cylinder part), 312 ... collar part, 411, 421 ... projection part.

Claims (7)

A cylindrical frame,
A strip-shaped display panel that is arranged over the entire circumference of the frame and displays various types of information;
A battery serving as a driving power source for the display panel,
Both end portions along the circumferential direction of the display panel are arranged apart from each other by a predetermined dimension,
The display device, wherein the battery is disposed between both ends of the display panel. The display device according to claim 1,
A display device comprising a cover member covering at least the battery. The display device according to claim 2,
A cover member position display part for positioning the cover member is formed on the display panel,
The cover member position display unit is provided so as to be able to display when the cover member is disposed. The display device according to claim 2,
A display device comprising a protrusion formed in contact with the cover member so as to position the cover member. The display device according to any one of claims 2 to 4,
The cover member includes photoelectric conversion means for converting light energy into electrical energy,
The said battery is formed from the secondary battery which stores the electrical energy converted by the said photoelectric conversion means, The display apparatus characterized by the above-mentioned. The display device according to any one of claims 1 to 5,
The frame includes a trunk and a lid member,
The trunk includes a tube portion and a flange portion protruding outward from one end of the tube portion,
The lid member is plate-shaped, has an opening with the same size and shape as the end shape of the tube portion, has an outer shape with the same size and shape as the outer shape of the collar portion, and the tube The other end of the part is detachably provided facing the collar part,
The display panel is disposed on the outer peripheral surface of the cylindrical portion,
A cylindrical translucent member is disposed on the outer peripheral surface of the display panel,
The translucent member is sandwiched between the collar portion and the lid member,
The said battery is arrange | positioned between the said cylinder part and a translucent member, is moved in the direction of the said cover member by removing the said cover member, and is provided so that replacement | exchange is possible. The display device according to any one of claims 2 to 6,
The frame includes a trunk and a lid member,
The trunk includes a tube portion and a flange portion protruding outward from one end of the tube portion,
The lid member is plate-shaped, has an opening with the same size and shape as the end shape of the tube portion, has an outer shape with the same size and shape as the outer shape of the collar portion, and the tube Provided at the other end of the part opposite the collar part,
A substantially cylindrical inner frame is disposed on the outer peripheral surface of the cylindrical portion,
The display panel is wound around the outer peripheral surface of the middle frame,
A cylindrical translucent member is disposed on the outer peripheral surface of the display panel,
The middle frame and the translucent member are sandwiched between the flange and the lid member,
The display device, wherein the cover member is covered with the translucent member.