TWI808720B - Solar energy touch panel, method of manufacturing solar energy touch device, and solar energy touch device including the same - Google Patents

Abstract

A solar energy touch panel including a first substrate, a touch layer, and a solar cell unit is provided. The touch layer is disposed on a first surface of the first substrate and includes a plurality of touch patterns. The solar cell unit is disposed on the first surface of the first substrate and surrounds the touch patterns, wherein the solar cell unit includes a front electrode layer, a photovoltaic conversion layer, and a back electrode layer. The photovoltaic conversion layer is disposed on the front electrode layer, and the back electrode layer is disposed on the photovoltaic conversion layer. The touch layer and the front electrode layer belong to the same layer. A method of manufacturing the solar energy touch device and a solar energy touch device including the solar energy touch panel are also provided.

Description

Solar touch panel, manufacturing method of solar touch device and solar touch device including same

The invention relates to a touch panel, in particular to a solar touch panel, a manufacturing method of a solar touch device and a solar touch device including the same.

A conventional electronic device including both touch control and photoelectric conversion functions has one of the following two structures: (1) a touch panel including a touch layer and a substrate and a photoelectric conversion panel including a photoelectric conversion layer and another substrate are attached to each other; (2) a touch layer and a photoelectric conversion layer are respectively disposed on opposite surfaces of the same substrate.

In the above-mentioned first structure, there are two substrates and the problem of excessive thickness; in the above-mentioned second structure, the touch layer and the photoelectric conversion layer must be formed on different surfaces of the same substrate in different processes, which therefore has problems such as long production time and easy scratches during the process, and has disadvantages such as reduced yield and increased manufacturing cost.

The present invention provides a novel solar touch panel, a solar touch device manufacturing method and a solar touch device including the solar touch panel. The solar touch panel and/or solar touch device has the advantages of increased yield and reduced manufacturing cost in addition to reduced thickness.

The solar touch panel of the present invention includes a first substrate, a touch layer and a solar battery unit. The touch layer is disposed on the first surface of the first substrate and includes a plurality of touch patterns. The solar battery unit is disposed on the first surface of the first substrate and surrounds the touch pattern, and includes a front electrode layer, a photoelectric conversion layer and a back electrode layer, wherein the photoelectric conversion layer is disposed on the front electrode layer, and the back electrode layer is disposed on the photoelectric conversion layer. The touch layer and the front electrode layer belong to the same layer.

In an embodiment of the invention, the solar touch panel further includes an insulating layer and a conductive layer. The insulation layer covers the back electrode layer and includes a contact window of the front electrode layer which exposes a part. The conductive layer is disposed on the insulating layer and is electrically connected to the front electrode layer through the contact window.

In an embodiment of the invention, the material of the conductive layer includes metal, alloy, metal oxide or a combination thereof.

In an embodiment of the invention, the material of the front electrode layer includes transparent conductive oxide.

In an embodiment of the present invention, the solar touch panel further includes a plurality of first wirings and a plurality of second wirings disposed on the first surface of the first substrate. Each of the plurality of first wires is electrically connected to a corresponding touch pattern, and each of the plurality of second wires is electrically connected to a corresponding solar battery unit.

In an embodiment of the present invention, the solar touch panel further includes a plurality of first connection terminals and a plurality of second connection terminals disposed on the first surface of the first substrate. Each of the plurality of first connection terminals is electrically connected to a corresponding first wire, and each of the plurality of second connection terminals is electrically connected to a corresponding second wire.

The manufacturing method of the solar touch device of the present invention includes the following steps. Firstly, forming a solar touch panel includes the following steps. (1) Providing a first substrate. (2) Simultaneously forming a touch layer and a front electrode layer of the solar cell unit on the first surface of the first substrate, wherein the touch layer includes a plurality of touch patterns, and the solar cell unit surrounds the touch pattern. (3) A photoelectric conversion layer and a back electrode layer are sequentially formed on the front electrode layer. Next, a display panel is provided. Next, the display panel and the solar touch panel are attached to each other by using the first adhesive layer.

In an embodiment of the present invention, the manufacturing method of the solar touch device further includes the following steps. A cover plate is provided, and the cover plate and the solar touch panel are adhered to each other by using the second adhesive layer.

In an embodiment of the present invention, the material of the first adhesive layer includes optical glue or word-of-mouth glue, and the material of the second adhesive layer includes optical glue.

The solar touch device of the present invention includes the aforementioned solar touch panel and display panel. The display panel is attached to the solar touch panel and includes a second substrate and a display layer. The display layer is disposed on the second substrate, and the display layer faces the second surface of the first substrate, wherein the second surface is opposite to the first surface.

In an embodiment of the present invention, the display panel and the solar touch panel are attached to each other through an adhesive layer, wherein the adhesive layer can be optical glue or word-of-mouth glue.

In an embodiment of the invention, the solar touch device further includes a cover plate. The cover plate is disposed on the solar touch panel and faces the first surface of the first substrate, and includes a third substrate and a decoration layer. The decoration layer is disposed on the third substrate and defines a display area and a peripheral area of the solar touch device, wherein the peripheral area is located at least one side of the display area. The decoration layer partially overlaps with the solar battery unit in the normal direction of the solar touch panel, and the overlapping area of the decoration layer and the solar battery unit is about 30-70%.

Based on the above, the embodiments of the present invention form the touch layer in the solar touch panel and the front electrode layer in the solar cell unit on the same substrate, which has the advantage of reducing the thickness of one substrate due to the reduction of the use of one substrate. In addition, the touch layer in the solar touch panel of the present invention and the front electrode layer in the solar cell unit are formed on one surface of the first substrate at the same time and belong to the same layer. Therefore, the solar touch panel of the present invention not only has a convenient manufacturing process and can reduce manufacturing costs, but also can improve its process yield due to its simple manufacturing process.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and descriptions to refer to the same or like parts. The present invention can also be embodied in various forms and should not be limited to the embodiments described herein. The thicknesses of layers and regions in the drawings may be exaggerated for clarity. The same or similar reference numerals denote the same or similar elements, and the following paragraphs will not repeat them one by one. In addition, the directional terms mentioned in the embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms used are for the purpose of illustration and not for the purpose of limiting the invention.

1A is an exploded view of a solar touch device 1 including a solar touch panel 10 according to an embodiment of the present invention, FIG. 1B is a schematic top view of the solar touch panel 10 in FIG. 1A , and FIG. 1C is a schematic cross-sectional view of the line A-A' in FIG.

Please refer to FIG. 1A and FIG. 1B at the same time. In this embodiment, the solar touch panel 10 includes a first substrate 100 , a touch layer 110 and a solar battery unit 120 .

In some embodiments, the material of the first substrate 100 may be glass, transparent resin or other suitable materials. The aforementioned transparent resin may be, for example, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyether or polyimide. In this embodiment, the material of the first substrate 100 is glass. The first substrate 100 has, for example, a first surface 100S1 and a second surface 100S2 , and the first surface 100S1 and the second surface 100S2 are opposite to each other.

In some embodiments, the touch layer 110 is disposed on the first surface 100S1 of the first substrate 100 and includes a plurality of touch patterns 110a. In detail, the touch layer 110 may include a plurality of touch patterns 110a arranged in an array on the first substrate 100 and having a specific shape, so as to achieve capacitive coupling. When a consumer's finger or other objects touch or approach part of the touch patterns 110a of the touch layer 110, it can be determined whether the touch operation is completed through the change of the capacitance value of these touch patterns 110a, and the touch position corresponding to the touch operation can be located. That is, in this embodiment, the solar touch panel 10 is a capacitive touch panel, but the invention is not limited thereto. In addition, in this embodiment, although FIG. 1B shows that the shape of the touch pattern 110 a includes a triangle, the present invention is not limited thereto. The formation method of the touch layer 110 is, for example, a sputtering method, but the present invention is not limited thereto. In some embodiments, the material of the touch layer 110 includes a transparent conductive material. For example, the material of the touch layer 110 can be transparent conductive oxide (transparent conductive oxide, TCO), and the material can include aluminum zinc oxide (AZO), gallium zinc oxide (GZO), indium zinc oxide (IZO), zinc boron oxide (BZO) or tin oxide (SnO ₂ ). In this embodiment, the material of the touch layer 110 includes aluminum zinc oxide, but the invention is not limited thereto.

In some embodiments, the solar cell unit 120 is disposed on the first surface 100S1 of the first substrate 100 and surrounds the touch pattern 110 a of the touch layer 110 . In some embodiments, the solar cell unit 120 is a superstrate type thin film solar cell. The cladding type thin-film solar cell mentioned above means that ambient light is irradiated onto the side of the first substrate 100 not provided with the solar cell unit 120 (the second surface 100S2 of the first substrate 100 ), and penetrates the first substrate 100 and then enters the interior of the solar cell unit 120 .

In this embodiment, the solar cell unit 120 includes a front electrode layer 122 , a photoelectric conversion layer 124 and a back electrode layer 126 stacked on the first substrate 100 in sequence. In addition, the solar battery unit 120 may include a design in which a plurality of solar battery units are connected in series or in parallel. For example, the solar battery unit 120 may be designed to include a single (mono) battery, a double (dual) battery or more batteries, and the present invention is not limited thereto.

The front electrode layer 122 is, for example, disposed on the first substrate 100 . The formation method of the front electrode layer 122 is also, for example, formed by sputtering, but the present invention is not limited thereto. It is worth mentioning that the front electrode layer 122 and the touch layer 110 in this embodiment are formed together by performing the same manufacturing process, therefore. The material of the front electrode layer 122 is the same as that of the touch layer 110 . That is, the material of the front electrode layer 122 includes aluminum zinc oxide, gallium zinc oxide, indium zinc oxide, zinc boron oxide, or tin oxide. In this embodiment, the material of the front electrode layer 122 includes aluminum zinc oxide, but the invention is not limited thereto.

The photoelectric conversion layer 124 is, for example, disposed on the front electrode layer 122 . The method for forming the photoelectric conversion layer 124 is, for example, chemical vapor deposition, but the invention is not limited thereto. In some embodiments, the material of the photoelectric conversion layer 124 may include monocrystalline silicon, polycrystalline silicon or amorphous silicon, that is, the solar cell unit 120 of this embodiment may be a silicon thin film solar cell. In this embodiment, the material of the photoelectric conversion layer 124 is amorphous silicon. The photoelectric conversion layer 124 includes, for example, a first extrinsic semiconductor layer 124a, an intrinsic semiconductor layer 124b, and a second extrinsic semiconductor layer 124c stacked in sequence, wherein the first extrinsic semiconductor layer 124a has a first doping type, and the second extrinsic semiconductor layer 124c has a second doping type. The above-mentioned first doping type and the second doping type are each one of P type and N type. In this embodiment, the first doping type is P-type, and the second doping type is N-type, but the invention is not limited thereto.

The back electrode layer 126 is, for example, disposed on the photoelectric conversion layer 124 and in contact with the second extrinsic semiconductor layer 124c. The method of forming the back electrode layer 126 is, for example, sputtering or chemical vapor deposition, but the invention is not limited thereto. The material of the back electrode layer 126 is, for example, metal, alloy or metal oxide. For example, the material of the back electrode layer 126 may include silver (Ag), chromium (Cr), aluminum (Al), molybdenum niobium (MoNb), molybdenum tantalum (MoTa), aluminum neodymium (AlNd), aluminum nickel lanthanum (AlNiLa), aluminum molybdenum tantalum (AlMoTa) or molybdenum oxide (MoO _x ). In this embodiment, the back electrode layer 126 is a molybdenum-tantalum/aluminum/molybdenum-tantalum stack structure, but the invention is not limited thereto.

FIG. 2 is a flowchart of a manufacturing method of a solar touch device according to an embodiment of the present invention.

Referring to FIG. 2 , the manufacturing method of the solar touch device 1 may include the following steps. First, in step S10 , the solar touch panel 10 is formed, wherein the method for forming the solar touch panel 10 may include performing step S100 , step S110 and step S120 , but the present invention is not limited thereto. In step S100 , the first substrate 100 is provided, and the material of the first substrate 100 can refer to the above-mentioned embodiments, and will not be repeated here. In step S110, the touch layer 110 and the front electrode layer 122 of the solar cell unit 120 are simultaneously formed on the first surface 100S1 of the first substrate 100, wherein the materials and formation methods of the touch layer 110 and the front electrode layer 122 can refer to the foregoing embodiments, and will not be repeated here. In step S120, the photoelectric conversion layer 124 and the back electrode layer 126 are sequentially formed on the front electrode layer 122. The materials and formation methods of the photoelectric conversion layer 124 and the back electrode layer 126 can refer to the above-mentioned embodiments, and will not be repeated here.

According to the aforementioned configuration and manufacturing method, the solar touch panel 10 of this embodiment integrates the touch layer 110 and the solar cell unit 120 on the first substrate 100, so that the electrons emitted by the solar cell unit 120 after being hit by photons can be provided to the electronic components (not shown) inside the solar touch panel 10 or other electronic components electrically connected to the solar touch panel 10 (such as the display panel to be introduced later). Therefore, when the solar touch panel 10 of this embodiment is applied to an electronic device, the user can use the solar energy provided by the environment to charge the electronic device at any time without worrying about the battery life of the electronic device.

Furthermore, the touch layer 110 of the present embodiment and the front electrode layer 122 of the solar battery unit 120 are formed on the first substrate 100 by performing the same process. Therefore, compared with the solar touch panel of the prior art, the solar touch panel 10 of the present embodiment has the advantage of reducing its thickness due to the use of one less substrate. In addition, the touch layer 110 of the present embodiment and the front electrode layer 122 of the solar battery unit 120 are formed together on one surface of the first substrate 100 (the first surface 100S1 ). Therefore, compared with the solar touch panel of the prior art, the solar touch panel 10 of the present embodiment not only has a convenient manufacturing process and can reduce manufacturing costs, but also can improve its process yield due to its simple manufacturing process.

Please continue to refer to FIG. 2 . Next, in step S20 , the display panel 20 and the cover plate 30 are provided. For details of the display panel 20 and the cover plate 30 , for example, refer to the following embodiments, and the present invention is not limited thereto.

Next, in step S30, use the adhesive layer 410 to attach the display panel 20 and the solar touch panel 10 to each other, and use the adhesive layer 420 to attach the cover plate 30 and the solar touch panel 10 to each other. The details of the adhesive layer 410 and the adhesive layer 420 can be referred to the following embodiments, for example, and the present invention is not limited thereto.

In some embodiments, the solar touch panel 10 may further include an insulating layer 130 , a conductive layer 140 , a plurality of traces TR and a plurality of connection terminals C. As shown in FIG.

The insulating layer 130 is, for example, disposed on the first substrate 100 and covers the touch layer 110 and the solar battery unit 120 . In this embodiment, the insulating layer 130 covers the back electrode layer 126 and includes the contact window 130h of the exposed portion of the front electrode layer 122 . The insulating layer 130 is formed by, for example, first utilizing physical vapor deposition or chemical vapor deposition and then performing a lithographic etching process. For example, an insulating material layer (not shown) can be formed on the first substrate 100 by physical vapor deposition or chemical vapor deposition. Next, a first patterned photoresist layer (not shown) is formed on the insulating material layer. Afterwards, using the first patterned photoresist layer as a mask, a first etching process is performed on the insulating material layer to form a plurality of insulating patterns (not shown). Next, a second patterned photoresist layer (not shown) is formed on the plurality of insulating patterns. Finally, using the second patterned photoresist layer as a mask, a second etching process is performed on the plurality of insulating patterns to form the insulating layer 130 including the contact window 130h. In some embodiments, the material of the insulating layer 130 can be an inorganic material, an organic material, or a combination thereof, and the limitation is that it must be a transparent material. It should be noted here that the contact window 130h is not limited to the one shown in FIG. 1C , and the insulating layer 130 may also include a contact window (not shown) exposing the back electrode layer 126 , the present invention is not limited thereto.

The conductive layer 140 is, for example, disposed on the insulating layer 130 . The conductive layer 140 can be formed by, for example, performing a sputtering method or a chemical vapor deposition method before performing a patterning process, but the invention is not limited thereto. The material of the conductive layer 140 is, for example, metal, alloy, metal oxide or a combination thereof. For example, the material of the conductive layer 140 includes silver (Ag), chromium (Cr), aluminum (Al), molybdenum niobium (MoNb), molybdenum tantalum (MoTa), aluminum neodymium (AlNd), aluminum nickel lanthanum (AlNiLa), aluminum molybdenum tantalum (AlMoTa) or molybdenum oxide (MoO _x ). In this embodiment, the conductive layer 140 is a molybdenum tantalum/aluminum stack structure, but the invention is not limited thereto. The conductive layer 140 in this embodiment is electrically connected to the front electrode layer 122 through the contact window 130h, and is electrically connected to the back electrode layer 126 through another contact window (not shown). Based on this, the conductive layer 140 of this embodiment can be used to extract electrons generated from the photoelectric conversion layer 124 and provide these electrons to required electronic components.

A plurality of traces TR are, for example, disposed on the first substrate 100 . In this embodiment, a plurality of traces TR are disposed in the peripheral region 10B of the solar touch panel 10 . In detail, from another point of view, the solar touch panel 10 may have a visible area 10A and a peripheral area 10B, wherein the peripheral area 10B is located on at least one side of the visible area 10A. In this embodiment, the peripheral area 10B surrounds the visible area 10A, but the invention is not limited thereto. In some embodiments, the plurality of traces TR includes a plurality of first traces TR1 and a plurality of second traces TR2 disposed on the first surface 100S1 of the first substrate 100 . Each of the plurality of first traces TR1 is electrically connected to the corresponding touch pattern 110a, such that an external driving element (not shown) inputs a corresponding electrical signal to the touch pattern 110a of the solar touch panel 10 ; or outputs a corresponding electrical signal from the touch pattern 110a of the solar touch panel 10 to the external driving element. Each of the plurality of second traces TR2 is electrically connected to the corresponding solar battery unit 120 , so that an external driving element (not shown) can input a corresponding electrical signal to the solar battery unit 120 of the solar touch panel 10 ; or output a corresponding electrical signal from the solar battery unit 120 of the solar touch panel 10 to an external driving element. In some embodiments, the material of the plurality of traces TR may include metal, which may be silver, copper, gold, aluminum, molybdenum or a combination thereof, but the invention is not limited thereto. In other embodiments, the materials of the plurality of traces TR may be the same as those of the front electrode layer 122 and the touch layer 110 in this embodiment, that is, the plurality of traces TR may also be completed in the same process as the front electrode layer 122 and the touch layer 110 .

A plurality of connection terminals C are, for example, disposed on the first substrate 100 . In this embodiment, a plurality of connection terminals C are also disposed in the peripheral region 10B of the solar touch panel 10 . The plurality of connection terminals C can be used to electrically connect with an external flexible circuit board (not shown), so that the driving elements disposed on the flexible circuit board receive or transmit corresponding electrical signals to the solar touch panel 10 of this embodiment. In this embodiment, the plurality of connection terminals C includes a plurality of first connection terminals C1 and a plurality of second connection terminals C2 disposed on the first surface 100S1 of the first substrate 100 . Each of the plurality of first connection terminals C1 is, for example, electrically connected to a corresponding first trace TR1 to receive or transmit an electrical signal to the touch pattern 110 a of the solar touch panel 10 . Each of the plurality of second connection terminals C2 is, for example, electrically connected to the corresponding second trace TR2 to receive or transmit electrical signals to the solar cell units 120 of the solar touch panel 10 .

Please continue to refer to FIG. 1A , the solar touch panel 10 of this embodiment can be applied to a solar touch device 1 . In some embodiments, the solar touch device 1 includes a solar touch panel 10 , a display panel 20 and a cover 30 . The components of the solar touch panel 10 and their arrangement relationship can refer to the aforementioned embodiments, wherein the solar touch panel 10 and the display panel 20 respectively have a printed circuit board or a flexible circuit board (not shown), and the control unit that electrically connects the solar touch panel 10 and the display panel 20 for signal transmission will not be repeated here.

As shown in the flow chart described in FIG. 2 , the display panel 20 is bonded to the solar touch panel 10 , for example. In some embodiments, the display panel 20 and the solar touch panel 10 are attached to each other through the adhesive layer 410 . The material included in the adhesive layer 410 may be, for example, optical clear adhesive or word-of-mouth glue, so as to bond the display panel 20 and the solar touch panel 10 by, for example, surface-mounting or frame-mounting, but the invention is not limited thereto. In this embodiment, the display panel 20 includes a second substrate 200 and a display layer 210 , wherein the second substrate 200 may have the same or similar material as that of the first substrate 100 , which will not be repeated here.

The display layer 210 is, for example, disposed on the second substrate 200 . In this embodiment, the display layer 210 faces the second surface 100S2 of the first substrate 100 of the solar touch panel 10 . In some embodiments, the display layer 210 may include liquid crystal, light emitting diode (LED), quantum dot (QD), fluorescence, phosphor, other suitable materials or a combination thereof depending on the type of the display panel 20 . In this embodiment, the display panel 20 is a liquid crystal display panel, therefore, the material of the display layer 210 includes liquid crystal. In some embodiments, the display panel 20 may further include an element layer (not shown) disposed between the display layer 210 and the second substrate 200 . The device layer includes, for example, a circuit structure for driving the display layer 210 . For example, the device layer may include a plurality of scan lines, a plurality of data lines, a plurality of transistors, a plurality of signal lines and/or a plurality of electrodes, but the invention is not limited thereto. In addition, when the display panel 20 is a liquid crystal display panel, the display panel 20 may further include a backlight module (not shown). The backlight module can be a direct-type backlight module or an edge-type backlight module, and the invention is not limited thereto.

The cover plate 30 is also attached to the solar touch panel 10 , for example. In some embodiments, the cover plate 30 and the solar touch panel 10 are attached to each other through the adhesive layer 420 . The material included in the adhesive layer 420 may be, for example, optical glue, so as to bond the cover plate 30 and the solar touch panel 10 by surface bonding, but the invention is not limited thereto. In this embodiment, the cover plate 30 includes a third substrate 300 and a decoration layer 310 , wherein the third substrate 300 may have the same or similar material as that of the first substrate 100 , which will not be repeated here. In addition, in this embodiment, the cover plate 30 is disposed on the solar touch panel 10 and faces the first surface 100S1 of the first substrate 100 .

The decoration layer 310 is, for example, disposed on the third substrate 300 , and is, for example, disposed on the surface of the third substrate 300 facing the solar touch panel 10 . The material of the decoration layer 310 includes, for example, ceramics, organic materials, inorganic materials or combinations thereof. For example, the material of the decoration layer 310 can be an opaque and insulating photosensitive resin for shielding unwanted elements in the solar touch device 1 , but the invention is not limited thereto. In this embodiment, the manufacturing method of the decoration layer 310 may include performing a suitable manufacturing method such as a coating process, a coating process, or a screen printing process, and the present invention is not limited thereto. In addition, the decoration layer 310 may, for example, include a single-layer structure or a multi-layer structure.

In some embodiments, the decoration layer 310 is disposed on at least one side of the third substrate 300 to define the display area 1A and the peripheral area 1B of the solar touch device 1 . In detail, in the normal direction N of the solar touch panel 10, the decorative layer 310 substantially overlaps the area where a plurality of traces TR and a plurality of connection terminals C are provided, wherein the overlapping area is the peripheral area 1B of the solar touch device 1, and the remaining area of the cover plate 30 not provided with the decoration layer 310 is the display area 1A of the solar touch device 1. From another point of view, in the normal direction N of the solar touch panel 10 , the decoration layer 310 substantially overlaps with the peripheral region 10B of the solar touch panel 10 , and the cover plate 30 not provided with the decoration layer 310 substantially overlaps with the visible region 10A of the solar touch panel 10 . In this embodiment, the peripheral area 10B of the solar touch panel 10 is located on at least one side of the visible area 10A, therefore, the peripheral area 1B of the solar touch device 1 is also located on at least one side of the display area 1A. In addition, in this embodiment, the decoration layer 310 partially overlaps with the solar battery unit 120 in the normal direction N of the solar touch panel 10 . In some embodiments, the overlapping area of the decoration layer 310 and the solar battery unit 120 in the normal direction N is about 30-70%. In detail, in the normal direction N of the solar touch panel 10, the area occupied by the decoration layer 310 is smaller than the area occupied by the solar battery units 120. Therefore, the decoration layer 310 will expose part of the solar battery units 120 in the normal direction N of the solar touch panel 10, thereby avoiding blocking the path of light traveling to the solar battery units 120.

To sum up, the present invention provides a novel solar touch panel, its manufacturing method and a solar touch device including the same. By making the touch layer in the solar touch panel and the front electrode layer in the solar cell unit be formed on the same substrate, it has the advantage of reducing the thickness of one substrate due to the reduction of the use of one substrate. In addition, the touch layer in the solar touch panel of the present invention and the front electrode layer in the solar cell unit are simultaneously formed on one surface of the first substrate and belong to the same layer, and are made of the same material, such as a transparent conductive layer. Therefore, the solar touch panel of the present invention can not only reduce the manufacturing cost due to the convenient manufacturing process, but also improve the process yield due to its simple manufacturing process.

1: Solar touch device 1A: Display area 1B, 10B: Surrounding area 10: Solar touch panel 10A: Visual area 20: Display panel 30: cover plate 100: first substrate 100S1: first surface 100S2: second surface 110: Touch layer 110a: Touch pattern 120: solar battery unit 122: Front electrode layer 124: photoelectric conversion layer 124a: the first extrinsic semiconductor layer 124b: intrinsic semiconductor layer 124c: the second extrinsic semiconductor layer 126: Back electrode layer 130: insulating layer 130h: contact window 140: conductive layer 200: second substrate 210: display layer 300: the third substrate 310: decorative layer 410, 420: adhesive layer A-A': section line C: Connection terminal C1: first connection terminal C2: Second connection terminal N: normal direction S100, S110, S120: steps TR: Trace TR1: the first trace TR2: the second trace

FIG. 1A is an exploded view of a solar touch device including a solar touch panel according to an embodiment of the present invention. FIG. 1B is a schematic top view of the solar touch panel in FIG. 1A . Fig. 1C is a schematic cross-sectional view of the line A-A' in Fig. 1B. FIG. 2 is a flowchart of a manufacturing method of a solar touch device according to an embodiment of the present invention.

1: Solar touch device

1A: Display area

1B, 10B: Surrounding area

10: Solar touch panel

10A: Visual area

20: Display panel

30: cover plate

100: first substrate

100S1: first surface

100S2: second surface

110: Touch layer

120: solar battery unit

200: second substrate

210: display layer

300: the third substrate

310: decorative layer

410, 420: adhesive layer

N: normal direction

Claims (11)

A solar touch panel, comprising: a first substrate; a touch layer disposed on a first surface of the first substrate and comprising a plurality of touch patterns; a solar cell unit disposed on the first surface of the first substrate and surrounding the touch patterns, wherein the solar cell unit comprises; a front electrode layer; a photoelectric conversion layer disposed on the front electrode layer; and a back electrode layer disposed on the photoelectric conversion layer; The touch patterns are electrically connected, and each of the plurality of second wirings is electrically connected to the corresponding solar cell unit; wherein the touch layer and the front electrode layer belong to the same layer; wherein the plurality of first wirings, the plurality of second wirings, the touch layer and the front electrode layer belong to the same layer. The solar touch panel as claimed in claim 1, further comprising: an insulating layer covering the back electrode layer and including a contact window of the front electrode layer with an exposed portion; and The conductive layer is arranged on the insulating layer, wherein the conductive layer is electrically connected with the front electrode layer through the contact window. The solar touch panel according to claim 2, wherein the material of the conductive layer includes metal, alloy, metal oxide or a combination thereof. The solar touch panel according to claim 1, wherein materials of the touch layer and the front electrode layer include transparent conductive oxide. The solar touch panel according to claim 1, further comprising a plurality of first connection terminals and a plurality of second connection terminals disposed on the first surface of the first substrate, wherein each of the plurality of first connection terminals is electrically connected to a corresponding first wiring, and each of the plurality of second connection terminals is electrically connected to a corresponding second wiring. A method for manufacturing a solar touch device, comprising: forming a solar touch panel, including the following steps: providing a first substrate; simultaneously forming a plurality of first traces, a plurality of second traces, a touch layer, and a front electrode layer of a solar cell unit on a first surface of the first substrate, wherein the touch layer includes a plurality of touch patterns, and the solar cell unit surrounds the touch pattern; wherein each of the plurality of first traces is electrically connected to a corresponding touch pattern, and each of the plurality of second traces is electrically connected to a corresponding solar cell unit; forming a photoelectric conversion layer and a back electrode layer on the front electrode layer; providing a display panel; and The display panel and the solar touch panel are adhered to each other by using the first adhesive layer. The method for manufacturing a solar touch device according to claim 6 further includes the following steps: providing a cover; and attaching the cover to the solar touch panel by using a second adhesive layer. The method for manufacturing a solar touch device according to claim 7, wherein the material of the first adhesive layer includes optical glue or word-of-mouth glue, and the material of the second adhesive layer includes optical glue. A solar touch device, comprising: the solar touch panel as described in any one of claims 1 to 5; and a display panel, bonded to the solar touch panel, and comprising: a second substrate; and a display layer, disposed on the second substrate; wherein the display layer faces the second surface of the first substrate, and the second surface is opposite to the first surface. The solar touch device according to claim 9, wherein the display panel and the solar touch panel are adhered to each other through an adhesive layer, and the adhesive layer includes optical glue or word-of-mouth glue. The solar touch device according to claim 9, further comprising a cover plate disposed on the solar touch panel and facing the first surface of the first substrate, wherein the cover plate includes: a third substrate; and a decoration layer disposed on the third substrate, wherein the decoration layer defines a display area and a peripheral area of the solar touch device, and the peripheral area is located on at least one side of the display area, wherein the decoration layer partially overlaps the solar cell unit in the normal direction of the solar touch panel.

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