TWI502425B - Touch panel and touch display panel using the same - Google Patents

Description

Touch panel and touch display panel using same

The present invention relates to a touch panel and a touch display panel thereof, and more particularly to a touch panel that is easier to rework and a touch display panel using the same.

In recent years, various electronic products have been moving toward simple operation, small size, and large screen size. In particular, portable electronic products have stricter requirements on volume and screen size. Therefore, many electronic products integrate a touch display panel to save space on the keyboard or control buttons, thereby expanding the screen area.

Generally, the touch panel has a plurality of connecting lines electrically insulated from each other, and is respectively connected between the sensing array in the center of the touch panel and the peripheral pads. However, as the touch display panel is developed toward a narrow bezel, the layout density of the connection lines is relatively increased. When a connection line is formed by etching or printing, there may be a material residue between adjacent two connection lines, causing electrical interference between the connection lines or even causing a short circuit.

Although a series of electrical detections are performed in the process of the touch panel in order to ensure the normal operation of the touch panel, when the electrical interference or short circuit problem is detected, the connection line is completely covered with the insulating layer and is difficult to remove. This material remains. In this way, the touch panel is difficult to rework, and the production cost of the touch panel is relatively increased.

The invention provides a touch panel, which is easy to rework and helps to improve the process yield and reduce the production cost.

The invention provides a touch panel, which can effectively reduce electrical interference between the connection lines.

In one embodiment, the touch panel of the present invention includes a light transmissive substrate, a sensing array, a plurality of pads, a plurality of connecting lines, and a first insulating layer. The light transmissive substrate has an inner surface. The sensing array is disposed on the inner surface. The pad is disposed on the inner surface and adjacent to one side of the transparent substrate. The connecting wires are disposed on the inner surface and are respectively connected between the sensing array and the corresponding pads. The first insulating layer is disposed on the transparent substrate and covers the connecting line. The first insulating layer has an opening exposing a portion of the inner surface between the two adjacent connecting lines.

In another embodiment, the touch panel of the present invention includes a transparent substrate, a first transparent conductive layer, a first insulating layer, a second transparent conductive layer, a second insulating layer, and a plurality of pads. Multiple cables. The transparent substrate has an inner surface. The first transparent conductive layer is on the inner surface, and the first transparent conductive layer includes a plurality of first electrode patterns. The first insulating layer is on the first electrode pattern. The second transparent conductive layer is located The first transparent conductive layer includes a plurality of second electrode patterns, and the first electrode pattern and the second electrode pattern together form a sensing array. The second insulating layer covers the second electrode pattern. The pads are disposed on the inner surface and adjacent to one side of the substrate. The connecting line is disposed on the inner surface and is respectively connected between the sensing array and the corresponding pads. The first insulating layer covers the connecting line, and the first insulating layer has an opening exposing two adjacent connecting lines. Part of the inner surface.

The present invention further provides a touch display panel using the foregoing touch panel.

In one embodiment, the touch display panel of the present invention includes the touch panel as described above and a display panel. The display panel is overlapped with the touch panel. The display panel includes a substrate, a pair of substrates, a display medium layer sandwiched between the substrate and the opposite substrate, and at least one connection pad. The display panel defines a display area and a peripheral circuit area. The display area has at least one sub-pixel. The sub-pixel is connected to at least one signal line, and the sub-pixel has at least one switching element and at least one pixel electrode connected to the switching element. The connection pad is disposed in the peripheral circuit area, and the connection pad is connected to the signal line.

In another embodiment, the touch display panel of the present invention includes the touch panel, a substrate, a display medium layer, and at least one connection pad as described above. The display medium layer is disposed between the substrate and the touch panel, wherein the touch display panel defines a display area and a peripheral circuit area. The display area has at least one sub-pixel. The sub-pixel is connected to at least one signal line, and the sub-pixel has at least one switching element and at least one pixel electrode connected to the switching element. The connection pad is disposed in the peripheral circuit area, and the connection pad is connected to the signal line.

Based on the above, the present invention utilizes the opening storm of the first insulating layer of the touch panel. The inner surface between the two adjacent connecting lines is exposed, so that if there is material residue in the formation of the connecting line, the connecting lines are electrically interfered with each other or even short-circuited, and the two adjacent connecting lines can be easily removed. Unnecessary material remains on the inner surface, thus reducing the difficulty of the touch panel and the touch display panel using the touch panel and the manufacturing cost.

The above described features and advantages of the invention will be apparent from the following description.

10, 10a‧‧‧ touch display panel

100,200‧‧‧ touch panel

110, 210‧‧‧Transparent substrate

112, 212‧‧‧ inner surface

114, 214‧‧‧ outer surface

120, 220‧‧‧ first transparent conductive layer

122‧‧‧First electrode pattern

130‧‧‧First insulation

140‧‧‧Second transparent conductive layer

142‧‧‧Second electrode pattern

150‧‧‧Second insulation

160‧‧‧ pads

170, 270‧‧‧ connecting lines

180, 280‧‧ ‧ shading layer

230‧‧‧Insulation

300, 400‧‧‧ display panel

310, 410‧‧‧ substrate

320‧‧‧ opposite substrate

330, 430‧‧‧ Display medium layer

340‧‧‧Subpixels

342‧‧‧Switching components

344‧‧‧ pixel electrodes

350‧‧‧ Signal Line

360‧‧‧Connecting mat

134, 234‧‧‧ openings

P1‧‧‧ display area

S1, S2‧‧‧ peripheral circuit area

SA‧‧‧Sensor array

T1‧‧‧ touch area

FIG. 1 is a schematic diagram of a manufacturing process of a touch panel according to an embodiment of the invention.

2A to 2E are schematic cross-sectional views corresponding to the manufacturing flow of FIG. 3.

3 is a cross-sectional view of the touch panel of FIG. 2C taken along line A-A'.

4 is a cross-sectional view of the touch panel of FIG. 2E taken along line B-B'.

5 to 9 are partial cross-sectional views of a touch panel in accordance with various embodiments of the present invention.

FIG. 10 is a schematic diagram of a manufacturing process of a touch panel according to an embodiment of the invention.

FIG. 11 is a partial cross-sectional view of a touch panel in accordance with an embodiment of the invention.

12 and 13 are portions of a touch panel in accordance with various embodiments of the present invention. Schematic diagram of the section.

FIG. 14 is a cross-sectional view of a touch display panel according to an embodiment of the invention.

15 is a schematic diagram of an equivalent circuit of the display panel of FIG. 14.

FIG. 16 is a cross-sectional view of a touch display panel in accordance with another embodiment of the present invention.

FIG. 1 is a schematic diagram of a manufacturing process of a touch panel according to an embodiment of the invention. 2A to 2E show the cross-sectional structure corresponding to the manufacturing flow of FIG. 3 in sequence. The manufacturing process of the touch panel of the present embodiment generally includes the following steps. First, as shown in FIG. 2A, a plurality of connecting lines 170 and a plurality of pads 160 are formed on the transparent substrate 110 (step S110). The transparent substrate 110 has an inner surface 112, and the connecting wires 170 and the pads 160 are formed on the inner surface 112 of the transparent substrate 110, respectively. The pad 160 is adjacent to one side of the transparent substrate 110, and the connecting line 170 is connected to the corresponding pad 160. The material of the transparent substrate 110 is, for example, glass, quartz, organic polymer, plastic or other suitable light transmissive material. Here, the light-transmitting material generally refers to a material having a high transmittance, and is not intended to limit a material having a transmittance of 100%. The connecting wire 170 may be a single layer or a multi-layer structure, and the material thereof may be metal, alloy, organic conductive material, oxide of the above material, nitride of the above material, oxynitride of the above material or other conductive material, and The above metal material may be, for example, molybdenum (Mo), chromium (Cr), aluminum (Al), niobium (Nd), titanium (Ti), copper (Cu), silver (Ag), gold (Au), zinc (Zn). ), Indium (In), gallium (Ga) or a combination of the above is a composite material.

Next, as shown in FIG. 2B, a first transparent conductive layer 120 is formed on the inner surface 112 of the transparent substrate 110 (step S120). The transparent substrate 110 includes a touch area T1 and a peripheral circuit area S1, and the peripheral circuit area S1 is substantially disposed around the touch area T1. The first transparent conductive layer 120 includes a plurality of first electrode patterns 122 located in the touch region T1. In this embodiment, the first transparent conductive layer 120 may be a single layer or a multilayer structure, and the material thereof includes Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), and aluminum tin. Aluminium Oxide (ATO), Aluminum Zinc Oxide (AZO), Indium Gallium Oxide (IGO), Aluminum Gallium Oxide (AGO) or other suitable transparent Conductive material.

Thereafter, as shown in FIG. 2C, a first insulating layer 130 is overlaid on the first transparent conductive layer 120 and the connection line 170 (step S130). More specifically, the first insulating layer 130 covers the first electrode pattern 122 and the connection line 170, and the first insulating layer 130 has a contact window 132 for exposing a partial first electrode pattern 122, such as each first electrode. Both ends of the pattern 122. In addition, the present embodiment further forms an opening at a position where the first insulating layer 130 corresponds to between two adjacent connecting lines 170 to expose a portion of the inner surface 112 between the two adjacent connecting lines 170. Fig. 3 further illustrates the cross-sectional structure taken along line A-A' of Fig. 2C. As shown in FIG. 3, an air gap can be formed between the two adjacent connecting lines 170 by the opening 134 of the first insulating layer 130. The first insulating layer 130 may be a single layer or a multilayer structure, and the material thereof may include an inorganic insulating material such as at least one of cerium oxide, tantalum nitride or cerium oxynitride or other suitable materials. Or an organic insulating material such as photoresist, benzocyclobutene (BCB), polymethylmethacrylate (PMMA), polyimide (PI), at least one or other suitable materials. Of course, the present invention is not limited thereto, and any material that can provide insulating properties can be selectively applied to the present embodiment to fabricate the first insulating layer.

Next, as shown in FIG. 2D, a second transparent conductive layer 140 is formed on the first insulating layer 130 (step S140), wherein the second transparent conductive layer 140 includes a plurality of second electrode patterns 142, and FIG. 2B The first electrode pattern 122 and the second electrode pattern 142 shown in FIG. 2D together form the sensing array of the embodiment, and the connecting line 170 is connected between the sensing array and the pad 160. In this embodiment, the second transparent conductive layer 140 may be a single layer or a multi-layer structure, and the material thereof may be selected from the materials described in the first transparent conductive layer 120, and the materials of the two elements 120 and 140 are the same or not. Can be used.

Then, in this embodiment, step S160 can be performed after step S140, that is, electrical detection is performed on the touch panel to ensure that the touch panel can operate normally. At this time, if there is a phenomenon that the connection line 170 is electrically disturbed or short-circuited due to the material remaining when the connection line 170 is formed, the S170 can be performed to rework the touch panel. The opening OP of the insulating layer 130 exposes the inner surface 112 between the two adjacent connecting lines 170, so that unnecessary material residue can be easily removed through the opening 134 during rework, and the difficulty of reworking the touch panel 100 is reduced. And production costs.

Next, as shown in FIG. 2E, a second insulating layer 150 is covered on the second transparent layer. The conductive layer 140 and the connection line 170 are formed (step S150), wherein the second insulating layer 150 covers the second electrode pattern 142 and the connection line 170 as shown in FIG. 2C. In this embodiment, the second insulating layer 150 may be a single layer or a multi-layer structure, and the material thereof may be selected from the materials described in the first insulating layer 130, and the materials of the elements 130 and 150 may be the same or different. use. Of course, the present invention is not limited thereto, and any material that can provide insulating properties can be selectively applied to the present embodiment to fabricate the second insulating layer 150.

It should be noted that step S160 and step S170 may also be performed after step S140 as described above, but after step S150 is completed, that is, the second insulating layer 150 is covered with the second transparent conductive layer 140 and After the connection line 170 is connected, the touch panel 100 is electrically tested. However, in this configuration, the second insulating layer 150 must also expose a portion of the inner surface 112 exposed by the opening 134 to facilitate the first detection when the material of the connecting line 170 is detected to cause electrical interference or short circuit. The inner surface 112 between the two adjacent connecting lines 170 exposed by the insulating layer 130 and the second insulating layer 150 is reworked to remove unnecessary material residue.

In addition, in other embodiments of the present invention, a dielectric material (not shown) may be filled over the opening 134 so as to be located between two adjacent connecting lines 170, wherein the dielectric constant of the dielectric material is smaller than the first insulating layer. The dielectric constant is to reduce electrical interference between adjacent two connecting lines 170. In this embodiment, the dielectric material may be a single layer or a multilayer structure, and the material thereof is, for example, an optically clear adhesive (OCA), a liquid optical adhesive (LOCA) or other suitable material.

As shown in FIG. 2E, the touch panel 100 manufactured by the above process includes a transparent substrate 110, a first transparent conductive layer 120, a first insulating layer 130, and a first The second transparent conductive layer 140 , a second insulating layer 150 , a plurality of pads 160 , and a plurality of connecting lines 170 . The transparent substrate 110 has an inner surface 112. The first transparent conductive layer 120 is located on the inner surface 112, and the first insulating layer 130 covers the first electrode pattern 122 of the first transparent conductive layer 120. The second transparent conductive layer 140 is disposed on the first insulating layer 130, and the second transparent conductive layer 140 includes a plurality of second electrode patterns 142, and the first electrode patterns 122 and the second electrode patterns 142 together constitute the sensing array SA. The second insulating layer 150 covers the second electrode pattern 142. The pad 160 is disposed on the inner surface 112 and adjacent to one side of the transparent substrate 110. The connecting wires 170 are also disposed on the inner surface 112 and are respectively connected between the sensing array SA and the corresponding pads 160.

In view of the above, Figure 4 further illustrates the cross-sectional structure taken along line B-B' of Figure 2E. As shown in FIG. 4, the second insulating layer 150 also exposes a portion of the inner surface 112 exposed by the opening 134 to form an air between the two adjacent connecting lines 170 exposed by the first insulating layer 130 and the second insulating layer 150. gap. In this way, when it is detected that the connection line 170 has a material residue and causes electrical interference or short circuit, the inside of the two adjacent connection lines 170 exposed by the first insulation layer 130 and the second insulation layer 150 can be easily performed. Surface 112 is reworked to remove unnecessary material residue.

The touch panel of the present embodiment is not limited to the configuration of FIG. 4 . In other embodiments of the present invention, the transparent conductive layer 120 may be over the connection line 170 or disposed on the first insulating layer 130 . And between the second insulating layer 150, other possible configurations of several touch panels will be listed below.

5 to 9 are partial cross-sectional views of a touch panel in accordance with various embodiments of the present invention. Specifically, as shown in FIG. 5, the first transparent conductive layer 120 is further The connection line 170 may be covered, that is, the first transparent conductive layer 120 is located between the connection line 170 and the first insulating layer 130, and the second insulating layer 150 covers the first insulating layer 130.

Referring to FIG. 6 , in the embodiment, the second insulating layer 150 is disposed on the first insulating layer 130 . The first transparent conductive layer 120 covers the connection line 170 and is located between the connection line 170 and the first insulation layer 130 , and the second transparent conductive layer 140 covers the first insulation layer 130 and is located at the first insulation layer 130 and the second insulation layer 150 . Between the second transparent conductive layer 140, a shield can be formed on the inner connecting line 170 to further reduce the electrical interference between the two adjacent connecting lines 170.

Referring to FIG. 7 , in the embodiment, the second insulating layer 150 is disposed on the first insulating layer 130 , and the second transparent conductive layer 140 further covers the first insulating layer 130 , and is located in the first insulating layer 130 and the second layer Between the insulating layers 150, a shielding effect is formed on the connecting wires 170 covered by the cover, thereby further reducing electrical interference between the two adjacent connecting wires 170.

Referring to FIG. 8 , in the embodiment, the second insulating layer 150 may also cover a portion of the inner surface 112 exposed by the opening 134 . However, in this configuration, the electrical test of the touch panel must be performed before the second insulating layer 150 is disposed, that is, before step S150 in FIG. 1 to test and screen before covering the second insulating layer 150. The touch panel with residual material causes a short circuit, and the inner surface 112 between the two adjacent connecting lines 170 exposed by the first insulating layer 130 is etched again to remove unnecessary material residue. Thereafter, the second insulating layer 150 is overlaid on the first insulating layer 130 and a portion of the inner surface 112 exposed by the opening 134. In addition, the design that the second insulating layer 150 can also cover a portion of the inner surface 112 exposed by the opening 134 can also be applied to Figure 5 to Figure 7.

Referring to FIG. 9 , further, in the embodiment, the touch panel shown in FIG. 5 to FIG. 8 further includes a light shielding layer 180 disposed on the transparent substrate 110 . In this embodiment, preferably, the light shielding layer 180 can be disposed under the connection line 170 and between the inner surface 112 and at least two adjacent connection lines 170. That is to say, the light shielding layer 180 is disposed on the peripheral circuit region S1 of the transparent substrate 110, and exposes the touch region T1, thereby preventing the peripheral circuit region S1 from leaking light. Of course, the invention is not limited thereto. In other embodiments of the present invention, the light shielding layer 180 may also be disposed above the insulating layers 130, 150. The light shielding layer 180 is, for example, a black matrix, and the material thereof includes a light shielding resin, a light shielding metal, or a composite material of a light shielding resin and a light shielding metal. In addition, preferably, the design that the light shielding layer 180 can be disposed under the connection line 170 and between the inner surface 112 and the at least two adjacent connection lines 170 can also be applied to FIGS. 5-8.

It should be noted that the sensing array of the touch panel of the present invention may be formed by a single transparent conductive layer to form a sensing array, in addition to being overlapped by a double transparent conductive layer as described above. The insulating layer is covered on the single-layer sensing array and the connecting line. The production process will be described in more detail below.

FIG. 10 is a flow chart showing the manufacturing process of the touch panel of the embodiment, and FIG. 11 is a partial cross-sectional view showing the touch panel of the embodiment. The manufacturing process of the touch panel of the present embodiment generally includes the following steps: First, a plurality of connecting lines 270 and a plurality of pads (not shown) are formed on an inner surface 212 of the transparent substrate 210 (step S210). , wherein the pad is disposed adjacent to the transparent substrate as shown by the pad 160 of FIG. 2A One side of the board, and the connecting line 270 connects the pads. In this embodiment, the material of the transparent substrate is, for example, glass, quartz, organic polymer, plastic or other suitable light transmissive material.

Then, a sensing array is formed on the inner surface 212 of the transparent substrate 210 (step S220), wherein the transparent substrate 210 includes a touch area and a peripheral circuit area, as shown in FIG. 2B, the touch area T1 and the peripheral circuit area. S1, and the peripheral circuit area is substantially disposed around the touch area, the sensing array is located in the touch area, and the pad and the connection line 270 are disposed in the peripheral circuit area, and the connection line 270 is connected between the sensing array and the pad . Thereafter, an insulating layer 230 is overlaid on the sensing array and the connecting line 270 (step S230), wherein the insulating layer 230 has an opening 234 as shown in FIG. 11 to expose a portion between the two adjacent connecting lines 270. Surface 212. The insulating layer 230 may be a single layer or a multilayer structure, and the material thereof may be selected from the materials described in the insulating layer 130 in the above embodiment.

After that, the touch panel 200 is electrically detected (step S240) to ensure that the touch panel 200 can operate normally. At this time, if there is a phenomenon that the connection line 270 is electrically disturbed or short-circuited due to the material remaining when the connection line 270 is formed, the touch panel 200 can be reworked (execution S250), since this embodiment The opening 234 of the insulating layer 230 exposes the inner surface 212 between the two adjacent connecting lines 270, so that unnecessary material residue can be easily removed through the opening 234 during rework, and the difficulty of reworking the touch panel 200 is reduced. And production costs.

In addition, in this embodiment, an air gap or a filling dielectric between two adjacent connecting lines 270 may be formed over the opening 234 of the insulating layer 230 as described above, and the dielectric constant of the dielectric material is smaller than the first. The dielectric constant of the insulating layer to lower the two Electrical interference between adjacent connecting lines 270. In this embodiment, the dielectric material may be a single layer or a multilayer structure, and the material thereof is, for example, an optically clear adhesive (OCA), a liquid optical adhesive (LOCA) or other suitable material.

Of course, the touch panel 200 of the present embodiment is not limited to the configuration of FIG. 11 , and FIG. 12 and FIG. 13 are partial cross-sectional structures of other configurations of the touch panel. Specifically, referring to FIG. 12 , the transparent conductive layer 220 for forming the sensing array can cover the connection line 270 , that is, the transparent conductive layer 220 is located between the connection line 270 and the first insulation layer 230 .

Referring to FIG. 13 , in the embodiment, the touch panel shown in FIG. 11 and FIG. 12 further includes a light shielding layer 280 disposed on the transparent substrate 210 . In the present embodiment, preferably, the light shielding layer 280 can be disposed under the connection line 270 and between the inner surface 212 and at least two adjacent connection lines 270. That is to say, the light shielding layer 280 is disposed on the peripheral circuit area of the transparent substrate 210, and exposes the touch area, thereby preventing light leakage in the peripheral circuit area. Of course, the invention is not limited thereto. In other embodiments of the present invention, the light shielding layer 280 may also be disposed above the insulating layer 230. The light shielding layer 280 is, for example, a black matrix, and the material thereof includes a light shielding resin, a light shielding metal, or a composite material of a light shielding resin and a light shielding metal. In addition, preferably, the light shielding layer 280 can be disposed, for example, under the connection line 270 and between the inner surface 212 and the at least two adjacent connection lines 270, and can also be applied to FIGS. 11-12.

FIG. 14 is a cross-sectional view of a touch display panel according to an embodiment of the invention. 15 is a schematic diagram of an equivalent circuit of the display panel of FIG. 14. The aforementioned touch The control panel 100 or 200 is adapted to be applied to the touch display panel 10 of the present embodiment. That is, the touch display panel 10 of the present embodiment includes the touch panel 100 or 200 and the display panel 300 as in the foregoing embodiments, wherein the display panel is overlapped with the touch panel 100 or 200. In the present embodiment, the touch panel 100 or 200 is superposed on the display panel 300 with its opposite inner surface outer surface 114 or 214 (eg, the outer surface 114 or 214 shown in FIG. 4 or FIG. 11). In order to enable the above two panels to be firmly fixed, an adhesive layer (not labeled), such as an optically clear adhesive (OCA) or a water gel, is usually added between the touch panel (100 or 200) and the display panel 300. Liquid Optical Clear Adhesive, LOCA) or other suitable materials. That is, an adhesive layer (not labeled) is interposed on the outer surface (114 or 214) of the substrate (110 or 210) of the touch panel (100 or 200) and the outer surface of the substrate (320 or 310) of the display panel 300. The display panel 300 can be, for example, a transmissive display panel, a transflective display panel, a reflective display panel, a color filter on a display panel of a color filter on array, and an active layer on a color filter. (array on color filter) display panel, vertical alignment type (VA) display panel, horizontal switching type (IPS) display panel, multi-domain vertical alignment type (MVA) display panel, twisted nematic (TN) display panel, super Twisted nematic (STN) display panel, pattern vertical alignment type (PVA) display panel, super pattern vertical alignment type (S-PVA) display panel, advanced large viewing angle (ASV) display panel, horizontal switching display panel (IPS) ), edge electric field switching type (FFS) display panel, continuous flame-like arrangement (CPA) display panel, axisymmetric array microcell type (ASM) display panel, optical compensation curved alignment type (OCB) display panel, super horizontal switching type (S-IPS) display panel, advanced super horizontal switching type (AS-IPS) display panel, extreme edge electric field switching type (UFFS) Display panel, blue phase liquid crystal display panel, polymer stable alignment display panel, dual-view display panel, triple-view display panel, three-dimensional display panel, electrophoretic display A panel, an electrowetting display panel, an electroluminescent display panel, or other type of panel, or a combination thereof.

More specifically, the display panel 300 of the present embodiment includes a substrate 310, a pair of substrates 320, a display medium layer 330 interposed between the substrate 310 and the opposite substrate 320, and at least one connection pad 360. In the present embodiment, the substrate 310 is, for example, an active device array substrate, and the display dielectric layer 330 is, for example, a liquid crystal layer, an electroluminescent layer, or other suitable material layer. The opposite substrate 320 is located opposite to the substrate 310. The display panel 300 defines a display area P1 and a peripheral circuit area S2. The display area P1 has at least one sub-pixel 340. The sub-pixel 340 is connected to at least one signal line 350. The signal line 350 is, for example, a data line or/and a scan line or the like for connecting to the sub-pixel 340. The sub-pixel 340 has at least one switching element 342 and at least one pixel electrode 344 connected to the switching element 342. The switching element 342 is, for example, a Thin Film Transistor (TFT), and the type of the thin film transistor may be a bottom gate type transistor, a top gate type transistor, or other suitable transistor. The connection pad 360 is disposed in the peripheral circuit area S2, and the connection pad 360 is connected to the signal line 350.

FIG. 16 is a cross-sectional view of a touch display panel in accordance with another embodiment of the present invention. The touch panel 100 or 200 is suitable for application to the touch display panel 10a of the present embodiment. That is, the touch display panel 10a of the present embodiment includes the touch panel 100 or 200, a substrate 410, a display medium layer 420, and at least one connection pad 430 as in the foregoing embodiments. The substrate 410 is, for example, an active device array substrate, and The dielectric layer 430 is, for example, a liquid crystal layer, an electroluminescent layer, or other suitable material layer. The display medium layer 430 is interposed between the substrate 410 and the substrate 110 of the touch panel 100 or the substrate 210 of the touch panel 200 to form the touch display panel 10a. In this embodiment, the display medium layer 430 is an outer surface 114 or 214 (for example, the outer surface 114 or 214 shown in FIG. 4 or FIG. 11 ) and the substrate 410 of the transparent substrate sandwiched between the touch panel 100 or 200 . between. The circuit configuration of the touch display panel 10a can also be, for example, as shown in FIG. 15. The touch display panel 10a defines a display area P1 and a peripheral circuit area S2. The display area P1 has at least one sub-pixel 340. The sub-pixel 340 is coupled to at least one of the signal lines 350 to provide a sub-pixel 340 display signal through the signal line 350. The sub-pixel 340 has at least one switching element 342 and at least one pixel electrode 344 connected to the switching element 342. The switching element 342 is, for example, a Thin Film Transistor (TFT) connection pad 360 disposed in the peripheral circuit region S2, and the connection pad 360 is connected to the signal line 350. The connection pad 360 is adapted to be electrically connected to a driving chip to drive the touch display panel 10a.

In summary, the present invention utilizes the opening of the insulating layer of the touch panel to expose the inner surface between two adjacent connecting lines. Therefore, if there is material residue in the formation of the connecting line, the connecting line is electrically disturbed or The short circuit phenomenon can easily remove unnecessary material residue on the inner surface between two adjacent connecting lines, thereby reducing the difficulty of the touch panel and the touch display panel using the touch panel, and the manufacturing cost. . In addition, the present invention can further fill air or a dielectric material having a dielectric constant smaller than the dielectric constant of the first insulating layer over the opening of the first insulating layer to further reduce electrical interference between the connecting lines to enhance Touch panel and using the touch panel The performance of the touch display panel.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

110‧‧‧Transparent substrate

112‧‧‧ inner surface

114‧‧‧ outer surface

130‧‧‧First insulation

170‧‧‧Connecting line

134‧‧‧ openings

Claims (24)

A touch panel includes: a transparent substrate having an inner surface; a sensing array disposed on the inner surface; a plurality of pads disposed on the inner surface and adjacent to a side of the transparent substrate a plurality of connecting wires disposed on the inner surface and respectively connected between the sensing array and the corresponding ones of the pads; and a first insulating layer disposed on the transparent substrate and covering the plurality of wires a connecting wire, the first insulating layer having an opening exposing a portion of the inner surface between two adjacent connecting lines. The touch panel of claim 1, further comprising a first transparent conductive layer disposed between the connecting lines and the first insulating layer. The touch panel of claim 1, further comprising a second insulating layer covering the first insulating layer. The touch panel of claim 3, further comprising a first transparent conductive layer disposed between the connecting lines and the first insulating layer. The touch panel of claim 4, further comprising a second transparent conductive layer disposed between the first insulating layer and the second insulating layer. The touch panel of claim 3, further comprising a second transparent conductive layer disposed between the first insulating layer and the second insulating layer. The touch panel of claim 4, wherein the second insulating layer further covers a portion of the inner surface exposed by the opening. The touch panel of claim 1, further comprising a dielectric material filled over the opening and located between two adjacent connecting lines, the dielectric constant of the dielectric material being smaller than the first insulating layer Dielectric constant. The touch panel of claim 1, further comprising: a light shielding layer disposed on the transparent substrate. The touch panel of claim 9, wherein the light shielding layer is located below the connecting lines and is sandwiched between the inner surface and at least two adjacent connecting lines. A touch display panel comprising: the touch panel of claim 1; and a display panel, the display panel comprising: a substrate; a pair of substrates; a display medium layer is disposed between the substrate and the opposite substrate, and the display panel defines a display area and a peripheral circuit area, the display area has at least one sub-pixel, and the sub-pixel is connected to at least one signal line And the sub-pixel has at least one switching element and at least one pixel electrode connected to the switching element; and at least one connection pad disposed in the peripheral circuit area, and the connection pad is connected to the signal line. A touch display panel comprising: the touch panel as described in claim 1; a substrate; a display medium layer disposed between the substrate and the touch panel to form the touch display panel; wherein the touch display panel defines a display area and a peripheral circuit area, the display area having at least one sub a pixel connected to the at least one signal line, the sub-pixel having at least one switching element and at least one pixel electrode connected to the switching element; and at least one connection pad disposed in the peripheral circuit region And the connection pad is connected to the signal line. A touch panel includes: a transparent substrate having an inner surface; a first transparent conductive layer on the inner surface, and the first transparent conductive layer includes a plurality of first electrode patterns; and a first insulating layer Located on the first electrode pattern; a second transparent conductive layer on the first insulating layer, and the second transparent conductive layer includes a plurality of second electrode patterns, and the first electrode patterns and the first The two electrode patterns together form a sensing array; a second insulating layer covers the second electrode pattern; a plurality of pads disposed on the inner surface and adjacent to one side of the substrate; and a plurality of connecting lines disposed on The inner surface is connected between the sensing array and the corresponding one of the pads, the first insulating layer covers the connecting lines, and the first insulating layer has an opening to expose two adjacent connections. The inner surface of the portion between the lines. The touch panel of claim 13, wherein the first transparent conductive layer covers the connecting lines. The touch panel of claim 13, wherein the second insulating layer covers the first insulating layer on the connecting lines. The touch panel of claim 15, wherein the first transparent conductive layer covers the connecting lines. The touch panel of claim 16, wherein the second transparent conductive layer covers the first insulating layer on the connecting lines. The touch panel of claim 15, wherein the second transparent conductive layer covers the first insulating layer on the connecting lines. The touch panel of claim 15, wherein the second insulating layer further covers a portion of the inner surface exposed by the opening. The touch panel of claim 13, further comprising a dielectric material filled over the opening and located between two adjacent connecting lines, the dielectric constant of the dielectric material being smaller than the first insulating layer Dielectric constant. The touch panel of claim 13, further comprising: a light shielding layer disposed on the transparent substrate. The touch panel of claim 21, wherein the light shielding layer is located below the connecting lines and is sandwiched between the inner surface and at least two adjacent connecting lines. A touch display panel comprising: the touch panel of claim 13; and a display panel stacked on the touch panel, the display panel having a substrate a pair of a substrate and a display medium layer disposed between the substrate and the opposite substrate, and the display panel defines a display area and a peripheral circuit area, the display area having at least one sub-pixel, the sub-pixel and At least one signal line is connected, and the sub-pixel has at least one switching element and at least one pixel electrode connected to the switching element; and at least one connection pad disposed in the peripheral circuit area, and the connection pad and the signal Wire connection. A touch display panel comprising: the touch panel of claim 13; a substrate; and a display medium layer disposed between the substrate and the touch panel to form the touch display panel The touch display panel defines a display area and a peripheral circuit area, the display area has at least one sub-pixel, the sub-pixel is connected to at least one signal line, and the sub-pixel has at least one switching element and one At least one pixel electrode connected to the switching element; and at least one connection pad disposed in the peripheral circuit area, and the connection pad is connected to the signal line.