Touch module

Abstract

A touch module has a light-transmitting area and a peripheral area located on one side of the light-transmitting area. The touch module includes a first electrode layer and a second electrode layer separated from the first electrode layer. The first electrode layer includes touch electrodes and wires. The wires extend outward from the touch electrodes for electrical connection. The present invention arranges the wires in the light-transmitting area that can be displayed, so that the wires pass through a plurality of touch electrodes and extend to the peripheral area, thereby reducing the area of ​​the peripheral area and realizing a narrow frame or a frameless design.

Description

Technical Field

[0001] The present disclosure relates to a touch module, and more particularly to a touch module with a larger light-transmitting area. Background Art

[0002] The existing touch module includes a receiving electrode layer and a transmitting electrode layer located in a light-transmitting area, and an opaque connection structure, a wiring pattern and a flexible circuit board located around the light-transmitting area. The receiving electrode layer and the transmitting electrode layer are electrically connected to the wiring pattern through the connection structure, and are further electrically connected to the flexible circuit board.

[0003] Traditionally, a very fine metal circuit (i.e., wiring pattern) is formed by finely etching a metal thin layer to reduce the area of ​​the opaque area around it. However, the cost of the fine etching process is high and the yield is low. In addition, there are still opaque connection structures and wiring patterns around the touch module, making it impossible to achieve a borderless design. Furthermore, when the touch module is designed to be bendable, the connection structure is easily peeled off from the wiring pattern due to bending. Summary of the invention

[0004] Based on this, one aspect of the present disclosure provides a touch module having a light-transmitting area and a peripheral area located on one side of the light-transmitting area. The touch module includes a first electrode layer and a second electrode layer separated from the first electrode layer. The first electrode layer includes a first electrode, a plurality of second electrodes, a first wire and a plurality of second wires. The first electrode is located in the light-transmitting area and extends along a first direction. The plurality of second electrodes are located in the light-transmitting area and are arranged on a first side of the first electrode close to the peripheral area, wherein the plurality of second electrodes are separated from each other and arranged along the first direction. The first wire connects the first electrode and extends along a second direction perpendicular to the first direction through between the plurality of second electrodes to the peripheral area. The plurality of second wires are respectively connected to the plurality of second electrodes and extend along the second direction to the peripheral area.

[0005] In one embodiment of the present disclosure, the plurality of second electrodes is a pair of second electrodes, one of the pair of second electrodes is disposed on a first side of the first wire, and the other of the pair of second electrodes is disposed on a second side opposite to the first side.

[0006] In one embodiment of the present disclosure, the first electrode layer further includes a third electrode and a third wire. The third electrode is located in the light-transmitting area and is disposed on one side of the plurality of second electrodes close to the peripheral area and on a first side of the first wire, wherein the third electrode extends along the first direction. The third wire is connected to the third electrode and extends to the peripheral area along the second direction.

[0007] In one embodiment of the present disclosure, the first electrode layer further includes a plurality of fourth electrodes and a plurality of fourth wires. The plurality of fourth electrodes are located in the light-transmitting area and are disposed on a side of the third electrode close to the peripheral area, wherein the plurality of fourth electrodes are separated from each other and arranged along the first direction, and the third wire extends through the plurality of fourth electrodes. The plurality of fourth wires are respectively connected to the plurality of fourth electrodes and extend to the peripheral area along the second direction.

[0008] In one embodiment of the present disclosure, the first electrode layer further includes a fifth electrode, a plurality of sixth electrodes, a fifth wire and a plurality of sixth wires. The fifth electrode is located in the light-transmitting area and is disposed on a side of the plurality of second electrodes close to the peripheral area and a second side of the first wire opposite to the first side, wherein the fifth electrode extends along the first direction and is aligned with the third electrode in the first direction. A plurality of sixth electrodes are located in the light-transmitting area and are disposed on a side of the fifth electrode close to the peripheral area, wherein the plurality of sixth electrodes are separated from each other and arranged along the first direction and are aligned with the plurality of fourth electrodes in the first direction. The fifth wire connects the fifth electrode and extends along the second direction through between the plurality of sixth electrodes to the peripheral area. A plurality of sixth wires respectively connect the plurality of sixth electrodes and extend along the second direction to the peripheral area.

[0009] In one embodiment of the present disclosure, the first electrode layer further includes a seventh electrode and a seventh wire. The seventh electrode is located in the light-transmitting area and is disposed on a second side of the first electrode opposite to the first side, wherein the seventh electrode extends along the first direction. The seventh wire connects the seventh electrode and extends along the second direction through a third side of the first electrode to the peripheral area, wherein the third side is adjacent to the first side.

[0010] In one embodiment of the present disclosure, the touch module further includes a connection structure located in the peripheral area. The connection structure includes a first connection portion, a plurality of second connection portions, and a bridge portion. The first connection portion is electrically connected to the first wire. The plurality of second connection portions are electrically connected to the plurality of second wires respectively. The bridge portion connects the plurality of second connection portions.

[0011] In one embodiment of the present disclosure, the touch module further includes a wiring pattern located in the peripheral area. The wiring pattern includes a first wiring and a second wiring. The first wiring is connected to the first connection portion, and the second wiring is connected to one of the plurality of second connection portions.

[0012] In one embodiment of the present disclosure, the first conductive wire and the plurality of second conductive wires are metal nanowire conductive layers, graphene conductive layers, indium tin oxide conductive layers, metal mesh conductive layers, conductive polymer layers or carbon nanotube conductive layers.

[0013] In one embodiment of the present disclosure, the touch module further includes a flexible substrate disposed between the first electrode layer and the second electrode layer.

[0014] The above description will be described in detail below with reference to implementation examples, and further explanation will be provided for the technical solution of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic exploded view of a touch display device according to an embodiment of the present disclosure.

[0016] Figure 2A FIG. 1 is a schematic top view of a touch module according to an embodiment of the present disclosure.

[0017] Figure 2B FIG. 1 is a schematic top view of a touch module according to an embodiment of the present disclosure.

[0018] Figure 2C It is a partial enlarged view of a touch module according to an embodiment of the present disclosure.

[0019] Figure 2D FIG. 2C is a schematic cross-sectional view of a touch module taken along line AA′ and line BB′ of FIG. 2C according to an embodiment of the present disclosure.

[0020] Figure 3 FIG. 1 is a top view of a touch module according to another embodiment of the present disclosure.

[0021] Description of reference numerals:

[0022] 1 Touch display device

[0023] 10 Display Panel

[0024] 20, 20” touch module

[0025] 200 First electrode layer

[0026] 211, 212a-212d, 213, 214a-214f, 215, 216a-216f, 217, 218 electrodes

[0027] 221, 222a~222d, 223, 224a~224f, 225, 226a~226f, 227, 228 wire

[0028] 300 substrates

[0029] 400 Second electrode layer

[0030] 411, 412, 413, 414 electrodes

[0031] 421, 422, 423, 424 wires

[0032] 500 Connection structure

[0033] 511, 512a, 512b, 513a, 513b, 514a, 514b connection part

[0034] 521, 522, 523 Bridge

[0035] 600 routing pattern

[0036] 601, 602, 603, 604 routing

[0037] 700 Insulation

[0038] D1, D2 direction

[0039] R1 light transmission area

[0040] R2 Surrounding area

[0041] R3 Region

[0042] S1~S4, SL, SR side DETAILED DESCRIPTION

[0043] In order to make the description of the present disclosure more detailed and complete, the following is an illustrative description of the implementation and specific embodiments of the present disclosure; however, this is not the only form of implementing or using the specific embodiments of the present disclosure. The various embodiments disclosed below can be combined or replaced with each other in beneficial circumstances, and other embodiments can be added to one embodiment without further recording or explanation. In the following description, many specific details will be described in detail to enable the reader to fully understand the following embodiments. However, the embodiments of the present disclosure can be practiced without these specific details.

[0044] Furthermore, spatially relative terms, such as "below", "under", "above", "on", etc., are used to facilitate the description of the relative relationship between one component or feature and another component or feature. The true meaning of these spatially relative terms includes other directions. For example, when the figure is flipped 180 degrees up and down, the relationship between one component and another component may change from "below" or "under" to "above" or "on". In addition, the spatially relative descriptions used in this article should also be interpreted in the same way.

[0045] FIG. 1 is an exploded schematic diagram of a touch display device 1 according to an embodiment of the present disclosure. Referring to FIG. 1 , the touch display device 1 includes a display panel 10 and a touch module 20. Specifically, the touch module 20 includes a first electrode layer 200, a second electrode layer 400, and a substrate 300 disposed between the first electrode layer 200 and the second electrode layer 400. More specifically, the touch module 20 is disposed on the display surface of the display panel 10, so that the light emitted by the display panel 10 can penetrate the first electrode layer 200, the substrate 300, and the second electrode layer 400 to the outside of the touch display device 1.

[0046] The display panel 10 is, for example, a liquid crystal display panel, an inorganic light-emitting diode (LED) panel, or an organic light-emitting diode (OLED) panel, but is not limited thereto.

[0047] In one embodiment, the first electrode layer 200 is a transmitting electrode layer, and the second electrode layer 400 is a receiving electrode layer. In another embodiment, the first electrode layer 200 is a receiving electrode layer, and the second electrode layer 400 is a transmitting electrode layer. In addition, the positions of the first electrode layer 200 and the second electrode layer 400 can be interchanged.

[0048] In one embodiment, the substrate 300 is a light-transmissive glass substrate, a plastic substrate, or other suitable transparent rigid or flexible substrates.

[0049] Please refer to FIG. 2A at the same time, which is a schematic top view of a touch module 20 according to an embodiment of the present disclosure. It should be noted that the substrate 300 is omitted in FIG. 2A in order to more clearly understand the relationship between the electrodes and the wires. The touch module 20 has a light-transmitting area R1 and a peripheral area R2 located on one side of the light-transmitting area R1. In addition to the first electrode layer 200, the second electrode layer 400 and the substrate 300, the touch module 20 also includes a connection structure 500 and a wiring pattern 600 located in the peripheral area R2. It should be noted that the light-transmitting area R1 corresponds to the display area of ​​the display panel 10 (as shown in FIG. 1), and the peripheral area R2 may correspond to a shielding area of ​​a glass cover plate covering the touch module 20, so the components such as the connection structure 500 or the wiring pattern 600 located in the peripheral area R2 are not visible outside the touch display device 1, but are not limited thereto.

[0050] The first electrode layer 200 includes a first electrode 211, a pair of second electrodes 212a, 212b, and another pair of second electrodes 212c, 212d. The first electrode 211 is located in the light-transmitting region R1 and extends along the first direction D1. The second electrode pair 212a, 212b and the second electrode pair 212c, 212d are located in the light-transmitting region R1 and are disposed on the first side S1 of the first electrode 211 close to the peripheral region R2. In more detail, as shown in FIG. 2A, the second electrode pair 212a, 212b are separated from each other and arranged along the first direction D1, and each second electrode 212a, 212b itself is also arranged along the first direction D1. Similarly, the second electrode pair 212c, 212d is also separated from each other and arranged along the first direction D1.

[0051] The first electrode layer 200 further includes a first wire 221, a pair of second wires 222a, 222b, and another pair of second wires 222c, 222d. The first wire 221 is connected to the first electrode 211, and extends along a second direction D2 perpendicular to the first direction D1 through the second electrode pair 212a, 212b and the second electrode pair 212c, 212d to the peripheral region R2. In more detail, the second electrode 212a is disposed on the first side SL of the first wire 221, and the second electrode 212b is disposed on the second side SR of the first wire 221, wherein the second side SR is opposite to the first side SL. Similarly, the second electrode 212c is disposed on the first side SL of the first wire 221, and the second electrode 212d is disposed on the second side SR of the first wire 221.

[0052] The second wire pairs 222a and 222b are respectively disposed on the first side SL and the second side SR of the first wire 221, and are respectively connected to the second electrode pairs 212a and 212b. In addition, the second wire pairs 222a and 222b extend along the second direction D2 through between the second electrode pairs 212c and 212d to the peripheral region R2. Similarly, the second wire pairs 222c and 222d are respectively disposed on the first side SL and the second side SR of the first wire 221, and are respectively connected to the second electrode pairs 212c and 212d. In addition, the second wire pairs 222c and 222d extend along the second direction D2 to the peripheral region R2.

[0053] Please refer to FIG. 2B at the same time. According to another embodiment of the present invention, in addition to the components shown in FIG. 2A, the first electrode layer 200 may further include a third electrode 213, a fourth electrode pair 214a, 214b, a fourth electrode pair 214c, 214d, a fourth electrode pair 214e, 214f, a fifth electrode 215, a sixth electrode pair 216a, 216b, a sixth electrode pair 216c, 216d, and a sixth electrode pair 216e, 216f. In addition, the first electrode layer 200 further includes a third wire 223, a pair of fourth wires 224a, 224b, a pair of fourth wires 224c, 224d, and a pair of fourth wires 224e, 224f, a fifth wire 225, a pair of sixth wires 226a, 226b, a pair of sixth wires 226c, 226d, and a pair of sixth wires 226e, 226f.

[0054] Specifically, the third electrode 213 and the fifth electrode 215 are located in the light-transmitting region R1 and extend along the first direction D1, and the third electrode 213 and the fifth electrode 215 are disposed on a side of the second electrode pair 212c, 212d close to the peripheral region R2. More specifically, the third electrode 213 and the fifth electrode 215 are disposed on the second side SR and the first side SL of the first conductive line 221, respectively, and in the first direction D1, the third electrode 213 and the fifth electrode 215 are aligned.

[0055] The fourth electrode pair 214a, 214b, the fourth electrode pair 214c, 214d, and the fourth electrode pair 214e, 214f ​​are located in the light-transmitting region R1, and are disposed on a side of the third electrode 213 close to the peripheral region R2 and the second side SR of the first conductive line 221. Similarly, the sixth electrode pair 216a, 216b, the sixth electrode pair 216c, 216d, and the sixth electrode pair 216e, 216f are located in the light-transmitting region R1, and are disposed on a side of the fifth electrode 215 close to the peripheral region R2 and the first side SL of the first conductive line 221. In more detail, the fourth electrode pair 214a, 214b are separated from each other and arranged along the first direction D1, the fourth electrode pair 214c, 214d are separated from each other and arranged along the first direction D1, and the fourth electrode pair 214e, 214f ​​are separated from each other and arranged along the first direction D1. Similarly, the sixth electrode pair 216a, 216b are separated from each other and arranged along the first direction D1, the sixth electrode pair 216c, 216d are separated from each other and arranged along the first direction D1, and the sixth electrode pair 216e, 216f are separated from each other and arranged along the first direction D1. In addition, in the first direction D1, the fourth electrode pair 214a, 214b is aligned with the sixth electrode pair 216a, 216b, the fourth electrode pair 214c, 214d is aligned with the sixth electrode pair 216c, 216d, and the fourth electrode pair 214e, 214f ​​is aligned with the sixth electrode pair 216e, 216f.

[0056] The third wire 223 is connected to the third electrode 213, and extends along the second direction D2 through the fourth electrode pair 214a, 214b, the fourth electrode pair 214c, 214d, and the fourth electrode pair 214e, 214f ​​to the peripheral region R2. In more detail, the fourth electrode 214a, the fourth electrode 214c, and the fourth electrode 214e are disposed on one side of the third wire 223, and the fourth electrode 214b, the fourth electrode 214d, and the fourth electrode 214f ​​are disposed on the other side of the third wire 223.

[0057] The fourth wire pairs 224a and 224b are respectively arranged on opposite sides of the third wire 223 and are respectively connected to the fourth electrode pairs 214a and 214b. In addition, the fourth wire pairs 224a and 224b extend along the second direction D2 through the fourth electrode pairs 214c and 214d and between the fourth electrode pairs 214e and 214f ​​to the peripheral area R2. Similarly, the fourth wire pairs 224c and 224d are respectively arranged on opposite sides of the third wire 223 and are respectively connected to the fourth electrode pairs 214c and 214d. In addition, the fourth wire pairs 224c and 224d extend along the second direction D2 through the fourth electrode pairs 214e and 214f ​​to the peripheral area R2. Similarly, the fourth wire pairs 224e and 224f are respectively arranged on opposite sides of the third wire 223 and are respectively connected to the fourth electrode pairs 214e and 214f. In addition, the fourth conductive line pair 224e and 224f extend along the second direction D2 to the peripheral region R2.

[0058] The fifth wire 225 is connected to the fifth electrode 215, and extends along the second direction D2 through the sixth electrode pair 216a, 216b, the sixth electrode pair 216c, 216d, and the sixth electrode pair 216e, 216f to the peripheral region R2. In more detail, the sixth electrode 216a, the sixth electrode 216c, and the sixth electrode 216e are disposed on one side of the fifth wire 225, and the sixth electrode 216b, the sixth electrode 216d, and the sixth electrode 216f are disposed on the other side of the fifth wire 225.

[0059] The sixth wire pair 226a, 226b is respectively arranged on opposite sides of the fifth wire 225, and is respectively connected to the sixth electrode pair 216a, 216b. In addition, the sixth wire pair 226a, 226b extends along the second direction D2 through the sixth electrode pair 216c, 216d and between the sixth electrode pair 216e, 216f to the peripheral area R2. Similarly, the sixth wire pair 226c, 226d is respectively arranged on opposite sides of the fifth wire 225, and is respectively connected to the sixth electrode pair 216c, 216d. In addition, the sixth wire pair 226c, 226d extends along the second direction D2 through the sixth electrode pair 216e, 216f to the peripheral area R2. Similarly, the sixth wire pair 226e, 226f is respectively arranged on opposite sides of the fifth wire 225, and is respectively connected to the sixth electrode pair 216e, 216f. In addition, the sixth conductive line pair 226e and 226f extend along the second direction D2 to the peripheral region R2.

[0060] In one embodiment, the electrodes 211, 212a-212d, 213, 214a-214f, 215, 216a-216f, 217, 218 include transparent electrode materials or conductive nanowires that are translucent, and the conductive wires 221, 222a-222d, 223, 224a-224f, 225, 226a-226f include translucent conductive nanowires or metal meshes that are translucent, so that the light emitted by the display panel 10 can pass through the first electrode layer 200 and the second electrode layer 400. The transparent electrode material is, for example, indium tin oxide (ITO), indium zinc oxide (IZO), other transparent conductive materials with high light transmittance and good conductivity, or a stack of the above materials. The conductive nanowires are, for example, metal nanowire conductive layers such as silver nanowires or copper nanowires. In other embodiments, the electrodes 211, 212a-212d, 213, 214a-214f, 215, 216a-216f, 217, 218 and the wires 221, 222a-222d, 223, 224a-224f, 225, 226a-226f can be made of the same transparent conductive material and can be selectively formed together in the same patterning process to achieve the effect of simplifying the process. The aforementioned transparent conductive material includes a metal nanowire conductive layer, a graphene conductive layer, an indium tin oxide conductive layer, a metal grid conductive layer, a conductive polymer layer or a carbon nanotube conductive layer.

[0061] It should be noted that, compared to other transparent conductive materials, the present invention preferably uses a metal nanowire conductive layer, such as a silver nanowire conductive layer. Because the material properties of the metal oxide film are more brittle and easily damaged when encountering bending stress. In addition, indium tin oxide requires a vacuum chamber, a higher deposition temperature and / or a high annealing temperature to obtain high conductivity, so the cost of the metal oxide film is high. Conductive polymer materials generally have lower conductivity values ​​and higher light absorption, and lack chemical and long-term stability. Therefore, compared to other conductive materials, the metal nanowire conductive layer used in the present invention is more suitable for use in flexible display devices, especially reducing the risk of disconnection of the connection structure and the wiring pattern due to bending.

[0062] The conductive lines 221, 222a-222d, 223, 224a-224f, 225, 226a-226f are formed by, for example, coating a conductive material such as silver paste and then performing a patterning process to form a desired conductive line pattern. Alternatively, a printing process may be performed to directly form the desired conductive line pattern.

[0063] In various embodiments of the present disclosure, multiple electrodes separated from each other are formed (for example, by a patterning process such as etching), and multiple wires are formed between the separated electrodes to electrically connect the separated electrodes to the peripheral region R2. Since the wires 221, 222a-222d, 223, 224a-224f, 225, 226a-226f of the first electrode layer 200 are dispersed in the electrode gaps of the first electrode layer 200 (i.e., corresponding to the display area), and can be selectively made of transparent conductive materials, compared to the prior art in which the touch module has opaque components all around (i.e., the opaque connection structure and the opaque wiring pattern are arranged around the touch module to electrically connect the transmitting electrode and the receiving electrode to the flexible circuit board), the connection structure 500 and the wiring pattern 600 of the present disclosure can be arranged only on one side of the touch module 20 (as shown in FIG. 2A and FIG. 2B). In other words, the peripheral region R2 can be located only on one side of the transparent region R1. In this way, the light-transmitting area of ​​the touch module 20 is increased, and the touch display device 1 can be made borderless. As mentioned above, the fine etching process for forming the wiring pattern is costly and has a low yield. The present disclosure can replace a portion of the wiring pattern around the traditional touch module with a wire, thereby saving costs and increasing the yield. On the other hand, when the touch module 20 is designed to be bendable, since the connecting structure 500 is only disposed on one side of the touch module 20, the risk of the connecting structure 500 being peeled off from the wiring pattern 600 due to bending is reduced.

[0064] It should be noted that although only two pairs of second electrodes (i.e., second electrode pairs 212a, 212b and second electrode pairs 212c, 212d) are shown in FIG. 2A, in other embodiments, more than two pairs of second electrodes, for example, three pairs, four pairs, or more than five pairs, may be arranged between the first side S1 of the first electrode 211 and the third electrode 213 and the fifth electrode 215. Similarly, although only three pairs of fourth electrodes (i.e., fourth electrode pair 214a, 214b, fourth electrode pair 214c, 214d and fourth electrode pair 214e, 214f) and three pairs of sixth electrodes (i.e., sixth electrode pair 216a, 216b, sixth electrode pair 216c, 216d and sixth electrode pair 216e, 216f) are illustrated in FIG. 2B, in other embodiments, more than three pairs of fourth electrodes may be provided on the side of the third electrode 213 close to the peripheral region R2, and more than three pairs of sixth electrodes may be provided on the side of the fifth electrode 215 close to the peripheral region R2.

[0065] 2A , the second electrode layer 400 includes a first vertical electrode 411 , a second vertical electrode 412 , a third vertical electrode 413 and a fourth vertical electrode 414 , and the second electrode layer 400 also includes a first vertical wire 421 , a second vertical wire 422 , a third vertical wire 423 and a fourth vertical wire 424 .

[0066] The first vertical electrode 411, the second vertical electrode 412, the third vertical electrode 413 and the fourth vertical electrode 414 are located in the light-transmitting region R1 and extend along the second direction D2. The first vertical electrode 411, the second vertical electrode 412, the third vertical electrode 413 and the fourth vertical electrode 414 are arranged spaced apart from each other along the first direction D1. The first vertical wire 421, the second vertical wire 422, the third vertical wire 423 and the fourth vertical wire 424 respectively connect the first vertical electrode 411, the second vertical electrode 412, the third vertical electrode 413 and the fourth vertical electrode 414 and extend along the second direction D2 to the peripheral region R2.

[0067] The connection structure 500 electrically connects each wire (i.e., the wires 221, 222a-222d of FIG. 2A, the wires 223, 224a-224f, 225, 226a-226f of FIG. 2B) to the wiring in the wiring pattern 600. The materials of the connection structure 500 and the wiring pattern 600 can be any conductive material known in the art, such as metal. Please also refer to FIG. 2C, which shows a partial enlarged view of the area R3. As shown in FIG. 2C, the connection structure 500 includes a first connection portion 511, two second connection portions 512a, 512b, two third connection portions 513a, 513b, two fourth connection portions 514a, 514b, a first bridge portion 521, a second bridge portion 522, and a third bridge portion 523.

[0068] Specifically, the first connection portion 511 is electrically connected to the third wire 223, the two second connection portions 512a and 512b are electrically connected to the fourth wire 224a and the fourth wire 224b respectively, the two third connection portions 513a and 513b are electrically connected to the fourth wire 224c and the fourth wire 224d respectively, and the two fourth connection portions 514a and 514b are electrically connected to the fourth wire 224e and the fourth wire 224f respectively.

[0069] The two ends of the first bridge portion 521 are connected to the two second connection portions 512a and 512b, the two ends of the second bridge portion 522 are connected to the two third connection portions 513a and 513b, and the two ends of the third bridge portion 523 are connected to the two fourth connection portions 514a and 514b. Please refer to FIG. 2D, which shows a cross-sectional schematic diagram of the touch module 20 taken along the line A-A' and the line BB' of FIG. 2C. As shown in FIG. 2D, the connection structure 500 includes an insulating layer 700 disposed between the third bridge portion 523 and the fourth wire pair 224c and 224d. Specifically, the insulating layer 700 covers the fourth wire pair 224c and 224d, thereby separating the third bridge portion 523 and the fourth wire pair 224c and 224d. Therefore, the fourth wire pair 224e and 224f can be electrically connected to each other through the third bridge portion 523, and insulated from other wires. Similarly, as shown in FIG. 2C , the two second connection portions 512a and 512b may be electrically connected to each other via the first bridge portion 521 and insulated from other wires, and the two third connection portions 513a and 513b may be electrically connected to each other via the second bridge portion 522 and insulated from other wires.

[0070] It should be understood that by setting the bridge portions 521, 522, and 523, the number of routing lines in the routing pattern 600 can be reduced. In detail, only one routing line can be set to electrically connect two corresponding wires. As shown in Figure 2C, the routing pattern 600 includes a first routing line 601, a second routing line 602, a third routing line 603, and a fourth routing line 604. The first routing line 601 is connected to the first connection portion 511, the second routing line 602 is connected to the second connection portion 512b, the third routing line 603 is connected to the third connection portion 513b, and the fourth routing line 604 is connected to the fourth connection portion 514b. Accordingly, on the one hand, the area of ​​the routing pattern 600 that is opaque is reduced. On the other hand, the manufacturing cost of the routing pattern 600 is reduced.

[0071] It is worth mentioning that in the conventional self-capacitive touch display device using in-cell touch technology, each touch sensing electrode is integrated into the corresponding pixel area. Each touch sensing electrode of each pixel is connected to a transparent wire, and the transparent wire extends to the peripheral area and is electrically connected to an input / output (I / O) contact of the touch chip. Therefore, the number of input / output contacts of the touch chip is large, resulting in a high cost of the touch chip. In contrast, in various embodiments of the present disclosure, the number of input / output contacts of the touch chip (not shown) used to connect the wiring pattern 600 corresponds to the number of electrodes in the first electrode layer 200 and the second electrode layer 400. Therefore, the number of input / output contacts of the touch chip can be greatly reduced, thereby reducing the cost of the touch chip.

[0072] Please refer to FIG. 3 , which is a top view schematic diagram of a touch module 20 ″ of another embodiment of the present disclosure. It should be noted that in FIG. 3 , components identical or similar to those in FIG. 2A and FIG. 2B are given the same symbols, and related descriptions are omitted. The touch module 20 ″ in FIG. 3 is similar to the touch module 20 in FIG. 2A , except that, in the touch module 20 ″ in FIG. 3 , only one pair of second electrodes 212 a and 212 b are provided. On the side of the third electrode 213 close to the peripheral region R2, only two pairs of fourth electrodes (i.e., fourth electrode pair 214 a and 214 b and fourth electrode pair 214 c and 214 d) are provided, and on the side of the fifth electrode 215 close to the peripheral region R2, only two pairs of sixth electrodes (i.e., sixth electrode pair 216 a and 216 b and sixth electrode pair 216 c and 216 d) are provided.

[0073] In addition, the touch module 20″ in FIG. 3 further includes a seventh electrode 217, an eighth electrode 218, a seventh wire 227, and an eighth wire 228. Specifically, the seventh electrode 217 and the eighth electrode 218 are located in the light-transmitting region R1 and are disposed on the second side S2 of the first electrode 211, wherein the second side S2 is opposite to the first side S1. The seventh electrode and the eighth electrode extend along the first direction D1 and are arranged at intervals from each other along the second direction D2. The seventh wire 227 connects the seventh electrode 217 and extends along the second direction D2 through the third side S3 of the first electrode 211 to the peripheral region R2, wherein the third side S3 is adjacent to the first side S1. The eighth wire 228 connects the eighth electrode 218 and extends along the second direction D2 through the fourth side S4 of the first electrode 211 to the peripheral region R2, wherein the fourth side S4 is opposite to the third side S3.

[0074] It should be noted that, although only one seventh electrode 217 and one eighth electrode 218 are shown in FIG. 3 , in other embodiments, more than two seventh electrodes and eighth electrodes may be provided on the second side S2 of the first electrode 211 , and a corresponding number of wires may be provided on the third side S3 and the fourth side S4 of the first electrode 211 to connect the seventh electrode and the eighth electrode.

[0075] In addition, it can be understood that the aforementioned embodiments are merely illustrative, and the number, shape, and size of electrodes in other embodiments are not limited thereto. For example, the shape of each electrode may be wavy in addition to being a long strip. The first electrode layer 200 may include a plurality of first wires 221. The number of vertical electrodes 411, 412, 413, and 414 spanned by each wire 221, 222a~222d, 223, 224a~224f, 225, 226a~226f may be increased, and so on.

[0076] As can be seen from the above embodiments, the touch module disclosed herein has a large light-transmitting area, thereby realizing a borderless touch display device. In addition, the wires located in the light-transmitting area replace a portion of the wiring pattern around the traditional touch module, reducing costs and increasing yield. Furthermore, the connection structure is only provided on one side of the touch module, reducing the risk of the connection structure being peeled off from the wiring pattern due to bending.

[0077] Although the present disclosure has been disclosed above in terms of embodiments, other embodiments are also possible. Therefore, the spirit and scope of the claims are not limited to the description contained in the embodiments herein.

[0078] Anyone skilled in the art will appreciate that various changes and modifications may be made without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope of the attached patent application.

Claims

1. A touch module, characterized in that: The touch module has a light-transmitting area and a peripheral area located on one side of the light-transmitting area, wherein the touch module comprises: A first electrode layer, comprising: A first electrode is located in the light-transmitting area and extends along a first direction; A plurality of second electrodes are located in the light-transmitting area and are disposed on a first side of the first electrode close to the peripheral area, wherein the second electrodes are separated from each other and each of the second electrodes is arranged along the first direction; a first conductive line connected to the first electrode and extending along a second direction substantially perpendicular to the first direction through between the second electrodes to the peripheral region; and A plurality of second conductive lines, respectively connected to the second electrodes, and each of the second conductive lines extends along the second direction to the peripheral area; a second electrode layer, separated from the first electrode layer and opposite to the first electrode layer; A connection structure is located in the peripheral area and includes: a first connection portion electrically connected to the first conductive wire; a plurality of second connection portions electrically connected to the second conductive wires respectively; and a bridge portion connecting the second connection portions; and A flexible substrate is disposed between the first electrode layer and the second electrode layer.

2. The touch module as claimed in claim 1, wherein the second electrodes include a pair of second electrodes, one of the pair of second electrodes is disposed on a first side of the first conductive line, and the other of the pair of second electrodes is disposed on a second side opposite to the first side.

3. The touch module as claimed in claim 1, wherein the first electrode layer further comprises: A third electrode is located in the light-transmitting area and is disposed on a side of the second electrodes close to the peripheral area and a first side of the first wire, wherein the third electrode extends along the first direction; and a third wire is connected to the third electrode and extends to the peripheral area along the second direction.

4. The touch module as claimed in claim 3, wherein the first electrode layer further comprises: A plurality of fourth electrodes are located in the light-transmitting area and are arranged on a side of the third electrode close to the peripheral area, wherein the fourth electrodes are separated from each other, each of the fourth electrodes is arranged along the first direction, and the third wire extends through between the fourth electrodes; and a plurality of fourth wires are respectively connected to the fourth electrodes, and each of the fourth wires extends to the peripheral area along the second direction.

5. The touch module as claimed in claim 4, wherein the first electrode layer further comprises: a fifth electrode located in the light-transmitting area and disposed on the side of the second electrodes close to the peripheral area and on a second side of the first conductive line opposite to the first side, wherein the fifth electrode extends along the first direction and is aligned with the third electrode in the first direction; A plurality of sixth electrodes are located in the light-transmitting area and disposed on a side of the fifth electrode close to the peripheral area, wherein the sixth electrodes are separated from each other, each of the sixth electrodes is arranged along the first direction, and is aligned with the fourth electrodes in the first direction; A fifth wire is connected to the fifth electrode and extends along the second direction through the sixth electrodes to the peripheral area; and a plurality of sixth wires are respectively connected to the sixth electrodes and each of the sixth wires extends along the second direction to the peripheral area.

6. The touch module as claimed in claim 1, wherein the first electrode layer further comprises: a seventh electrode, located in the light-transmitting region and disposed on a second side of the first electrode opposite to the first side, wherein the seventh electrode extends along the first direction; and a seventh wire connected to the seventh electrode and extending along the second direction through a third side of the first electrode to the peripheral region, wherein the third side is adjacent to the first side.

7. The touch control module according to claim 1, further comprising: A routing pattern is located in the peripheral area and includes: a first routing line connected to the first connection portion; and a second routing line connected to one of the second connection portions. 8 . The touch module as claimed in claim 1 , wherein the first conductive wire and the second conductive wires are metal nanowire conductive layers, graphene conductive layers, indium tin oxide conductive layers, metal mesh conductive layers, conductive polymer layers or carbon nanotube conductive layers.

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