Touch sensing layer, display panel and display device

Abstract

A touch sensing layer relates to the field of display technology and is used to improve touch signals. The touch sensing layer includes a touch area, a routing area, a plurality of first touch electrode blocks, a plurality of second touch electrode blocks and at least one first touch auxiliary part. The routing area is located outside the touch area. A plurality of first touch electrode blocks are located in the touch area, a plurality of second touch electrode blocks are located in the touch area, a plurality of second touch electrode blocks and a plurality of first touch electrode blocks are staggered in a first direction and a second direction and arranged in the same layer, and the first direction intersects with the second direction. Among them, among a group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area, at least some of the first touch electrode blocks are provided with a first touch auxiliary part on the side facing the routing area, and the first touch auxiliary part is used to improve the touch signal in the touch sensing layer.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a touch sensing layer, a display panel and a display device. Background Art

[0002] With the development of display technology, display devices with touch functions are becoming more and more popular because of their simple and convenient operation and better user experience. A touch display device includes a touch sensing layer and a display panel, and the touch sensing layer is arranged on the light-emitting side of the display panel to facilitate touch operation.

[0003] However, the touch display device still faces the problem of inaccurate touch, that is, there may be phenomena such as inability to feel the touch, wrong touch point position, etc. Therefore, how to provide a touch display device with accurate touch has become a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0004] Embodiments of the present invention provide a touch sensing layer, a display panel and a display device for improving touch signals.

[0005] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0006] On the one hand, a touch sensing layer is provided. The touch sensing layer includes a touch area, a wiring area, a plurality of first touch electrode blocks, a plurality of second touch electrode blocks and at least one first touch auxiliary part. The wiring area is located at the periphery of the touch area. The plurality of first touch electrode blocks are located at the touch area. The plurality of second touch electrode blocks are located at the touch area, and the plurality of second touch electrode blocks and the plurality of first touch electrode blocks are staggered with each other in a first direction and a second direction and arranged in the same layer, and the first direction intersects with the second direction. The at least one first touch auxiliary part, wherein, among a group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area, at least some of the first touch electrode blocks are provided with the first touch auxiliary part on the side facing the wiring area, and the first touch auxiliary part is used to improve the touch signal in the touch sensing layer.

[0007] In some embodiments, the touch sensing layer further includes a plurality of first touch leads. The plurality of first touch leads are located in the routing area, and an end of the first touch lead located on a first side of the touch area is a first end; the first touch auxiliary portion is disposed between the first touch electrode block and the first end of the first touch lead; the first touch auxiliary portion is respectively coupled to the first touch electrode block adjacent thereto and the first end of the first touch lead.

[0008] In some embodiments, the first touch lead extends along the third direction on the first side of the touch area; the first touch electrode block close to the first side of the touch area and farthest from the third direction is not provided with the first touch auxiliary part on the side facing the routing area and is directly coupled to the first touch lead.

[0009] In some embodiments, along the third direction, the resistance of the first touch auxiliary portion gradually increases.

[0010] In some embodiments, the touch sensing layer further includes a plurality of second touch leads. The plurality of second touch leads are located in the routing area, and at least one end of the second touch electrode blocks located in the same row is coupled to the second touch lead.

[0011] In some embodiments, the touch sensing layer further includes at least one second touch auxiliary portion. The second touch auxiliary portion is disposed between the second touch electrode block and the second touch lead, and the second touch auxiliary portion is coupled to the second touch electrode block and the second touch lead respectively.

[0012] In some embodiments, the touch sensing layer further includes a plurality of first touch leads. The plurality of first touch leads are located in the routing area, and the first end of the first touch lead located on the first side of the touch area is coupled to the second touch electrode block; the first touch auxiliary portion is disposed on a side of a group of the first touch electrode blocks close to the first end facing the routing area; the first touch auxiliary portion is insulated from the first touch electrode block.

[0013] In some embodiments, the first touch auxiliary portion and the first touch electrode block are both metal mesh structures.

[0014] In some embodiments, the first touch auxiliary portion is a metal trace.

[0015] In some embodiments, the touch sensing layer further includes a first signal shielding line. The first signal shielding line is located at the periphery of the plurality of first touch leads; and the first touch auxiliary portion is coupled to the first signal shielding line.

[0016] In some embodiments, the touch sensing layer further includes a plurality of second touch leads. The plurality of second touch leads are located in the routing area, and at least one end of the first touch electrode blocks in the same row is coupled to the second touch lead.

[0017] In some embodiments, the touch sensing layer further includes at least one second touch auxiliary portion. At least some of the second touch electrode blocks in a row of second touch electrode blocks near the end of the second touch lead are provided with the second touch auxiliary portion on a side facing the routing area.

[0018] In some embodiments, the touch sensing layer further includes at least one third touch auxiliary portion. At least some of the second touch electrode blocks in a group of the second touch electrode blocks close to the second side of the touch area are provided with the third touch auxiliary portion on a side facing the wiring area; the second side of the touch area is opposite to the first side of the touch area.

[0019] In some embodiments, the first touch auxiliary portion is located in the touch area.

[0020] In some embodiments, at least two of the first touch lead, the first touch auxiliary portion, and the first touch electrode block are in the same layer and made of the same material.

[0021] In some embodiments, the first touch lead extends from the first side of the touch area to the third side of the touch area, and the first side of the touch area intersects the third side of the touch area.

[0022] In another aspect, a touch screen is provided, wherein the touch screen comprises a display panel and a touch sensing layer, wherein the touch sensing layer is arranged on a light emitting side surface of the display panel.

[0023] In some embodiments, the display panel is an organic light-emitting diode display panel; the display panel includes a packaging layer, and the first touch electrode block and the second electrode block of the touch sensing layer are arranged on the surface of the packaging layer.

[0024] In another aspect, a display device is provided, wherein the display device comprises a housing and a touch screen, wherein the touch screen is disposed in the housing.

[0025] The touch sensing layer of the present invention includes a first touch auxiliary part and a second touch auxiliary part. On the one hand, the first touch auxiliary part and the second touch auxiliary part are coupled to the first touch electrode block and the second touch electrode block respectively. The first touch auxiliary part and the second touch auxiliary part are also coupled to the first touch lead and the second touch lead respectively. The first touch auxiliary part itself has a resistor, which can compensate for the resistance of the first touch lead, so that the load on each first touch lead is not much different, so that the loss of each first touch lead to the first touch signal is equal or approximately equal. Then, the strength of the first touch signal transmitted by each first channel is the same or approximately the same, thereby improving the first touch signal. Similarly, the second touch auxiliary part itself has a resistor, which can compensate for the resistance of the second touch lead, so that the load on each second touch lead is not much different, and the loss of each second touch lead to the first touch signal is equal or approximately equal, so that the strength of the second touch signal transmitted by each second channel is the same or approximately the same, thereby improving the second touch signal. In this way, the touch uniformity of the touch sensing layer can be improved and the touch accuracy can be improved.

[0026] On the other hand, the first touch auxiliary part and the second touch auxiliary part are insulated from the first touch electrode block and the second touch electrode block respectively. The provision of the first touch auxiliary part is equivalent to increasing the distance between the first touch lead and the first touch electrode block near the end of the first touch lead. The increase in this distance is beneficial to reducing the interference of the second touch signal on the first touch electrode block with the first touch signal on the first touch electrode block. In this way, the provision of the first touch auxiliary part is beneficial to improving the quality of the first touch signal on the first touch electrode block, thereby improving the first touch signal, and ultimately reducing the possibility of the touch screen reporting a touch position error or not being able to feel the touch. Similarly, the provision of the second touch auxiliary part is equivalent to increasing the distance between the second touch lead and the second touch electrode block near the end of the second touch lead. The increase in this distance is beneficial to reducing the interference of the first touch signal on the second touch lead with the second touch signal on the second touch electrode block. In this way, the provision of the second touch auxiliary part is beneficial to improving the quality of the second touch signal on the second touch electrode block, thereby improving the second touch signal and ultimately reducing the possibility of the touch screen reporting a touch position error or failing to feel the touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1is a structural diagram of a display device according to some embodiments;

[0029] Figure 2A is a structural diagram of a touch screen according to some embodiments;

[0030] Figure 2B is a structural diagram of a touch screen according to some other embodiments;

[0031] Figure 3 is a cross-sectional structural diagram of a touch screen according to some embodiments;

[0032] Figure 4 is a structural diagram of a touch sensing layer according to some embodiments;

[0033] Figure 5 is a top view of a touch screen according to some embodiments;

[0034] Figure 6 is a structural diagram of a touch sensing layer according to some other embodiments;

[0035] Fig. 7A is a structural diagram of a touch sensing layer according to some further embodiments;

[0036] Figure 7B is a structural diagram of a touch sensing layer according to some further embodiments;

[0037] Figure 7C is a structural diagram of a touch sensing layer according to some further embodiments;

[0038] Fig.7D is a structural diagram of a touch sensing layer according to some further embodiments;

[0039] Fig. 7E is a structural diagram of a touch sensing layer according to some further embodiments;

[0040] Fig. 8A is a structural diagram of a touch sensing layer according to some further embodiments;

[0041] Figure 8B is a structural diagram of a touch sensing layer according to some further embodiments;

[0042] Fig. 9A is a structural diagram of a touch sensing layer according to some further embodiments;

[0043] Fig. 9B is a structural diagram of a touch sensing layer according to some further embodiments;

[0044] Fig.10 is a partially enlarged structural diagram of a touch sensing layer according to some embodiments;

[0045] Fig.11is a structural diagram of a touch sensing layer according to some further embodiments;

[0046] Fig. 12A is a structural diagram of a touch sensing layer according to some further embodiments;

[0047] Fig. 12B is a structural diagram of a touch sensing layer according to some further embodiments;

[0048] Fig. 12C is a structural diagram of a touch sensing layer according to some further embodiments;

[0049] Fig.13A is a structural diagram of a touch sensing layer according to some further embodiments;

[0050] Fig. 13B is a structural diagram of a touch sensing layer according to some further embodiments;

[0051] Fig.14 is a structural diagram of a touch sensing layer according to some further embodiments;

[0052] Fig.15 is a structural diagram of a touch sensing layer according to some further embodiments;

[0053] Fig.16A is a structural diagram of a touch sensing layer according to some further embodiments;

[0054] Fig. 16B is a structural diagram of a touch sensing layer according to some further embodiments;

[0055] Fig.17A is a partially enlarged structural diagram of a touch sensing layer according to some other embodiments;

[0056] Fig. 17B is a partially enlarged structural diagram of a touch sensing layer according to some further embodiments;

[0057] Fig.18 is a structural diagram of a touch sensing layer according to some further embodiments;

[0058] Fig.19 is a structural diagram of a touch sensing layer according to some further embodiments;

[0059] Fig. 20 is a structural diagram of a touch sensing layer according to some further embodiments;

[0060] Fig.21 is a structural diagram of a touch sensing layer according to some further embodiments;

[0061] Fig. 22 is a structural diagram of a touch sensing layer according to some further embodiments;

[0062] Fig.23 is a structural diagram of a touch sensing layer according to some further embodiments. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0065] In addition, in the present application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the changes in the orientation of the components in the drawings.

[0066] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. "And / or" is just a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0067] An embodiment of the present application provides a display device. The display device involved in the embodiment of the present application can be, for example: a tablet computer, a mobile phone, an e-reader, a remote control, a personal computer (PC), a laptop computer, a personal digital assistant (PDA), a car-mounted device, an Internet TV, a wearable device, a TV, etc.

[0068] The embodiments of the present application do not impose any special restrictions on the specific form of the above-mentioned display device. For the convenience of explanation, the following description is made using a mobile phone as an example of the display device.

[0069] In some embodiments provided in this application, Figure 1 As shown, the display device 1000 mainly includes a touch screen 100 , a middle frame 110 , a housing 120 and a cover plate 130 , and the touch screen 100 and the middle frame 110 are disposed in the housing 120 .

[0070] The middle frame 110 is located between the touch screen 100 and the housing 120 , and the surface of the middle frame 110 away from the touch screen 100 (the surface facing the housing 120 ) is used to install internal components such as batteries, circuit boards, cameras, antennas, etc.

[0071] The cover plate 130 is located at a side of the touch screen 100 away from the middle frame 110 . The cover plate 130 may be, for example, a cover glass (CG for short), and the cover glass may have a certain toughness.

[0072] The touch screen 100 has a light emitting side through which a display screen can be seen and a back side arranged opposite to the light emitting side. The middle frame 110 is arranged on the back side of the touch screen 100 , and the cover plate 130 is arranged on the light emitting side of the touch screen 100 .

[0073] The touch screen 100 includes a display panel (DP) and a touch sensing layer disposed on the light emitting side surface of the display panel.

[0074] In some embodiments of the present application, Figure 2A As shown, the display panel 1 may be a liquid crystal display (LCD) panel. In this case, the touch screen 100 further includes a backlight unit (BLU) 3 disposed on the back of the LCD panel for providing light to the LCD panel.

[0075] Or, in other embodiments of the present application, Figure 2B As shown, the display panel 1 is an organic light emitting diode (OLED) display panel; a quantum dot light emitting diode (QLED) display panel. In this case, the OLED display panel and the QLED display panel can realize self-luminescence, so the backlight module 3 is not required in the touch screen 100.

[0076] For the convenience of description, the following description is given by taking the display panel 1 as an OLED display panel as an example.

[0077] The OLED display panel may be a top-gate structure or a bottom-gate structure. In addition, the OLED display panel may be a single-gate structure or a double-gate structure. The OLED display panel provided in the embodiment of the present application is only an illustration and is not intended to be limiting.

[0078] like Figure 3 As shown, the display panel 1 includes a substrate 11 , a pixel driving circuit D, a light emitting device 12 and an encapsulation layer 13 .

[0079] Regarding the pixel driving circuit D, for example, Figure 3 As shown, the pixel driving circuit D is arranged on one side of the substrate 11. The pixel driving circuit D (or pixel circuit) is generally composed of electronic devices such as thin film transistors (TFT for short) and capacitors. For example, the pixel circuit D can be a 2T1C structure pixel circuit composed of two thin film transistors (a switching TFT and a driving TFT) and a capacitor C. Of course, the pixel driving circuit D can also be composed of more than two thin film transistors (multiple switching TFTs and one or more driving TFTs) and at least one capacitor. The multiple switching TFTs included in the pixel driving circuit D can be formed synchronously with the driving TFT. Figure 3 Only the driving TFT in the driving pixel circuit D is shown schematically.

[0080] Regarding the structure of the light emitting device 12, for example, Figure 3 As shown, the light emitting device 12 is arranged on a side of the pixel driving circuit D away from the substrate 11. The light emitting device 12 includes an anode 121, a cathode 122 and a light emitting material layer 123 arranged between the anode 121 and the cathode 122. The light emitting material layer 123 emits light under the driving current between the anode 121 and the cathode 122.

[0081] Among them, the above-mentioned pixel driving circuit D can be coupled to the anode 121 of the light-emitting device 12, and the pixel driving circuit D is used to transmit a driving signal to the anode 121 of the light-emitting device 12, and the cathode 122 of the light-emitting device 12 receives a power signal, thereby forming a driving current between the anode 121 and the cathode 122 to drive the light-emitting material layer 123 to emit light.

[0082] The plurality of light emitting devices 12 can emit light of multiple colors, for example, at least a first color, a second color, and a third color, where the first color, the second color, and the third color are three primary colors (for example, red, green, and blue). It can also be said that the display panel 1 includes a red sub-pixel (R) emitting red light, a green sub-pixel (G) emitting green light, and a blue sub-pixel (B) emitting blue light.

[0083] In addition, in order to avoid crosstalk between primary color lights emitted by adjacent light emitting devices 12, Figure 3 As shown, the display panel 1 further includes a pixel define layer (PDL for short), and the PDL is disposed between adjacent light emitting material layers 123 .

[0084] Regarding the encapsulation layer 13, for example, Figure 3 As shown, the encapsulation layer 13 is arranged on the side of the light emitting device 12 away from the substrate 11. The encapsulation layer 13 may be an encapsulation substrate or an encapsulation film. The encapsulation layer 13 is used to encapsulate the display panel 1 to prevent water vapor from invading.

[0085] Regarding the touch sensing layer 2, in some embodiments provided in the present application, from the cross-sectional view, as shown in FIG. Figure 3 As shown, the touch sensing layer 2 is disposed on the light-emitting side surface of the display panel 1 , or it can be said that the touch sensing layer 2 is disposed on the surface of the encapsulation layer 13 .

[0086] The touch sensing layer 2 may directly contact the encapsulation layer 13, or may be separated from the encapsulation layer 13 by other layers (not shown in the figure), such as a flat layer, etc. This is equivalent to the display panel 1 being used as a carrier for the touch sensing layer 2, and there is no need to set a separate carrier in the touch sensing layer 2, which can reduce the thickness of the touch screen 100.

[0087] Based on this, the structure of the touch sensing layer 2 provided in the embodiment of the present application is described in detail below with four examples.

[0088] Example 1

[0089] The present application embodiment provides a touch sensing layer 2, such as Figure 4 As shown, the touch sensing layer 2 includes a touch area S and a routing area Q located outside the touch area S, wherein the touch area S of the touch sensing layer 2 serves as the touch area of ​​the display device 1000 and overlaps with the display area of ​​the display device 1000, and the routing area Q of the touch sensing layer 2 serves as the routing area of ​​the display device 1000 and is located in the peripheral area of ​​the display device 1000.

[0090] In some embodiments provided in this application, Figure 4 As shown, the touch sensing layer 2 includes a plurality of first touch electrode blocks 21, a plurality of second touch electrode blocks 22, a plurality of first touch leads 21′, a plurality of second touch leads 22′, a first signal shielding line 23, a second signal shielding line 24, a touch integrated circuit (also referred to as a touch IC) and a flexible printed circuit (FPC).

[0091] Multiple first touch electrode blocks 21 and multiple second touch electrode blocks 22 are located in the touch area S of the touch sensing layer 2, and multiple first touch leads 21′, multiple second touch leads 22′, first signal shielding lines 23, second signal shielding lines 24, touch IC and FPC are located in the routing area Q of the touch sensing layer 2.

[0092] like Figure 4 As shown, the plurality of first touch electrode blocks 21 and the plurality of second touch electrode blocks 22 are staggered with each other in the first direction Y and the second direction X and are arranged in the same layer, and the first direction Y intersects with the second direction X.

[0093] The plurality of first touch electrode blocks 21 and the plurality of second touch electrode blocks 22 are disposed in the same layer. For example, in some embodiments, the plurality of first touch electrode blocks 21 and the plurality of second touch electrode blocks 22 are formed simultaneously by a patterning process (such as exposure, development, etching, etc.) and are in the same layer and with the same material.

[0094] The plurality of first touch electrode blocks 21 and the plurality of second touch electrode blocks 22 are arranged alternately, which can be understood as follows. Figure 4 As shown, two adjacent rows of first touch electrode blocks 21 and second touch electrode blocks 22 are connected in series in a zigzag arrangement. Alternatively, it can be understood that the periphery of the first touch electrode block 21 is surrounded by the second touch electrode block 22, and the periphery of the second electrode block 22 is surrounded by the first touch electrode block 21. Alternatively, it can be understood that the connecting line of any adjacent first touch electrode block 21 and second touch electrode block 22 intersects the first direction Y and the second direction X, and is not parallel. Alternatively, it can be understood that adjacent first touch electrode blocks 21 are not separated by second touch electrode blocks 22. Adjacent second touch electrode blocks 22 are not separated by first touch electrode blocks 21.

[0095] The multiple first touch electrode blocks 21 are divided into multiple rows along the first direction Y, the multiple first touch electrode blocks 21 in the same row are coupled to each other, and the first touch electrode blocks in adjacent rows in the multiple rows of first touch electrode blocks are insulated from each other. For example, along the first direction Y, the multiple first touch electrode blocks 21 in the first row are coupled to each other, and the multiple first touch electrode blocks 21 in the first row and the multiple first touch electrode blocks 21 in the second row are insulated from each other. The multiple first touch electrode blocks 21 in each row are arranged in sequence along the second direction X, and the first touch electrode blocks in each row can be used as a first channel, for example, and the first channel is used to transmit the first touch signal.

[0096] The plurality of second touch electrode blocks 22 are divided into a plurality of rows along the second direction X, the plurality of second touch electrode blocks 22 in the same row are coupled to each other, and the second touch electrode blocks 22 in adjacent rows in the plurality of rows of second touch electrode blocks 22 are insulated from each other. For example, along the second direction X, the plurality of second touch electrode blocks 22 in the first row are coupled to each other, and the plurality of second touch electrode blocks 22 in the first row and the plurality of second touch electrode blocks 22 in the second row are insulated from each other. The plurality of second touch electrode blocks 22 in each row are sequentially arranged along the first direction Y, and the second touch electrode blocks in each row can be used as a second channel, for example, and the second channel is used to transmit the second touch signal.

[0097] The first channel and the second channel can be, for example, a receiving signal channel and a trigger signal channel for each other. The first touch signal and the second touch signal can be a trigger signal and a receiving signal for each other. For example, the first channel is used as a receiving signal channel, and the second channel is used as a trigger signal channel. The first touch signal is a receiving signal, and the second touch signal is a trigger signal. Or vice versa.

[0098] It is understandable that, although the first touch electrode block 21 and the second touch electrode block 22 are arranged in the same layer, the first touch electrode block 21 and the second touch electrode block 22 are insulated from each other. In some embodiments, the first touch electrode blocks 21 in the same row and the second touch electrode blocks 22 in the same row can be coupled by means of a bridge jumper, but the first touch electrode blocks 21 and the second touch electrode blocks 22 are insulated from each other.

[0099] For example, Figure 4 As shown, the first touch electrode blocks 21 in the same row are directly coupled, and the second touch electrode blocks 22 in the same row are coupled through the bridge portion, and the bridge portion is arranged in a different layer from the first touch electrode blocks 21 and the second touch electrode blocks 22. In some embodiments, the conductive layer where the first touch electrode blocks 21 and the second touch electrode blocks 22 are located is arranged close to the display panel 1 relative to the conductive layer where the bridge portion is located.

[0100] In other embodiments, the conductive layer where the first touch electrode block 21 and the second touch electrode block 22 are located is arranged away from the display panel 1 relative to the conductive layer where the bridge portion is located. In this way, the conductive layer where the first touch electrode block 21 and the second touch electrode block 22 are located is further away from the display panel 1, thereby reducing the interference of the signal of the light emitting control unit in the display panel 1 on the first touch signal on the first touch electrode block 21 and the second touch signal on the second touch electrode block 22.

[0101] Regarding the structures of the first touch electrode block 21 and the second touch electrode block 22 , in some embodiments, the first touch electrode block 21 and the second touch electrode block 22 are both solid block structures.

[0102] In some other embodiments, both the first touch electrode block 21 and the second touch electrode block 22 are grid block structures.

[0103] For example, the first touch electrode block 21 and the second touch electrode block 22 may be manufactured by a flexible multi-layer on cell (FMLOC) process.

[0104] like Figure 5 As shown, on the side of the packaging layer 13 away from the substrate 11 , metal mesh wiring is made between the PDL openings, and the metal mesh wiring constitutes the first touch electrode block 21 and the second touch electrode block 22 .

[0105] Regarding the first touch lead 21 ′, in some embodiments provided in the present application, for example Figure 4 As shown, the first touch lead 21' extends from the left side to the bottom side of the touch area S, one end of the first touch lead 21' is coupled to a row of first touch electrode blocks 21, and the other end is coupled to the touch IC. The first touch lead 21' is used to transmit a first touch signal.

[0106] Regarding the second touch lead 22 ′, in some embodiments provided in the present application, for example Figure 4 As shown, the second touch lead 22' extends from the upper side of the touch area S to the lower side via the right side, one end of the second touch lead 22' is coupled to a row of second touch electrode blocks 22, and the other end is coupled to the touch IC. The second touch lead 22' is used to transmit the second touch signal.

[0107] In some embodiments, Figure 4 As shown, two ends of the same row of second touch electrode blocks 22 are respectively coupled with a second touch lead 22 ′. Therefore, part of the second touch lead 22 ′ is located at the lower side of the touch area S, between the second touch electrode block 22 and the touch IC.

[0108] Regarding the first signal shielding line 23, in some embodiments provided in the present application, as Figure 4 As shown, the first signal shielding line 23 is located at the periphery of the plurality of first touch leads 21′ and the plurality of second touch leads 22′, and is arranged around the outer contours of the plurality of first touch leads 21′ and the plurality of second touch leads 22′. One end of the first signal shielding line 23 is coupled to the touch IC, and the other end is floating. The touch IC can transmit a shielding signal to the first signal shielding line 23, and the shielding signal can reduce the interference of external noise on the first touch signal on the first touch lead 21′ and the second touch signal on the second touch lead 22′.

[0109] Regarding the second signal shielding line 24, in some embodiments provided in the present application, such as Figure 4As shown, the second signal shielding line 24 is located on the right side of the touch area S, and is disposed between the touch area S and the second touch lead 22 ′ closest to the touch area S. The extension direction of the second signal shielding line 24 is parallel to the first direction Y. One end of the second signal shielding line 24 is coupled to the touch IC, and the other end of the second signal shielding line 24 is floating.

[0110] The shielding signal transmitted on the second signal shielding line 24 may be the same as the shielding signal transmitted on the first signal shielding line 23. The shielding signal on the second signal shielding line 24 can prevent the second touch signal on the second touch lead 22' from crosstalking with the first touch signal on the first touch electrode block 21 close to the second touch lead 22'.

[0111] The above-mentioned FPC is used to connect multiple first touch leads 21′, multiple second touch leads 22′, first signal shielding lines 23, and second signal shielding lines 24 to the touch IC. Multiple pins are arranged on the FPC, and multiple first touch leads 21′ and multiple second touch leads 22′ are coupled to the multiple pins respectively. The multiple pins coupled to the multiple first touch leads 21′ are coupled to the same output terminal of the FPC coupled to the touch IC. In other words, the multiple first touch leads 21′ are integrated into one first touch lead 21′ in the FPC and then coupled to the touch IC. The multiple pins coupled to the multiple second touch leads 22′ are coupled to the same output terminal of the FPC coupled to the touch IC. In other words, the multiple second touch leads 22′ are integrated into one second touch lead 22′ in the FPC and then coupled to the touch IC.

[0112] The touch IC is used to transmit and receive touch signals. For example, the touch IC can transmit a second touch signal to the second touch lead 22′, and the touch IC can receive a first touch signal on the first touch lead 21′. The touch IC is also provided with a plurality of pins. The first signal shielding line 23 and the second signal shielding line 24 are coupled to different pins respectively. The touch IC transmits the same shielding signal to the first signal shielding line 23 and the second signal shielding line 24.

[0113] Regarding the touch principle of the touch sensing layer 2: the second touch electrode block 22 and the first touch electrode block 21 can constitute a capacitor, and multiple first touch electrode blocks 21 and multiple second touch electrode blocks 22 can constitute multiple capacitors (for example, C1, C2, C3...). Each capacitor has a different position in the touch sensing layer 2, or it can be said that each capacitor is located at a different point in the coordinate system composed of the first direction Y and the second direction X. The touch IC transmits a second touch signal (for example, a trigger signal) to the second touch lead 22', and the second touch signal is transmitted to the second touch electrode block 22 through the second touch lead 22'. At this time, each capacitor at the above different positions will have an initial capacitance value. Since the human body itself is a conductor, when a person's finger touches a certain position of the touch screen 100, the capacitance value of the capacitor at that position will change. According to the change in the capacitance value, the first touch electrode block 21 at that position will receive the corresponding first touch signal (for example, a receiving signal). The first touch signal on the first touch electrode block 21 at the position is transmitted to the touch IC through the first touch lead 21'. The capacitance value of the capacitor at the untouched position remains unchanged. Therefore, by judging the capacitance value on each capacitor, the touch point can be determined, thereby realizing the function.

[0114] Based on the touch sensing layer 2 provided in this example, since the structures of the multiple first touch electrode blocks 21 located in the touch area S are the same or approximately the same, and the structures of the multiple second touch electrode blocks 22 are the same or approximately the same. Therefore, the capacitance value of each capacitor is not much different, so that the load (load = capacitance x resistance) of each capacitor is not much different. In this way, the loss of the touch signal on each capacitor is not much different. For multiple second touch signals (such as trigger signals) of the same strength, after passing through multiple capacitors at different positions, the strength of the first touch signals (such as received signals) received by the multiple first touch electrode blocks 21 at different positions is not much different.

[0115] However, if Figure 4 As shown, since the distance from each row of first touch electrode blocks to the FPC is different, for example, along the direction approaching the FPC, the distance from each row of first touch electrode blocks to the FPC gradually decreases. Therefore, along the direction approaching the FPC, the length of the first touch lead 21′ coupled to each row of first touch electrode blocks gradually decreases. Since, the smaller the length of the first touch lead 21′, the smaller the resistance of the first touch lead 21′. Therefore, along the direction approaching the FPC, the resistance of the first touch lead 21′ coupled to each row of first touch electrode blocks gradually decreases. And the smaller the resistance of the first touch lead 21′, the smaller the load of the first touch lead 21′. Therefore, along the direction approaching the FPC, the load of the first touch lead 21′ coupled to each row of first touch electrode blocks gradually decreases.

[0116] For example, the length of the first touch lead 21' coupled to the first touch electrode block in the second row is less than the length of the first touch lead 21' coupled to the first touch electrode block in the first row. Then the resistance of the first touch lead 21' coupled to the first touch electrode block in the second row is less than the resistance of the first touch lead 21' coupled to the first touch electrode block in the first row. Therefore, the load of the first touch lead 21' coupled to the first touch electrode block in the second row is less than the load of the first touch lead 21' coupled to the first touch electrode block in the first row.

[0117] The existence of the load of each first touch lead 21′ will cause the first touch lead 21′ to have a loss in the first touch signal transmitted through the first touch lead 21′. The smaller the load of the first touch lead 21′, the smaller the loss of the first touch signal. It can be seen from the above description that the load of the first touch lead 21′ coupled to each row of first touch electrode blocks gradually decreases along the direction approaching the FPC, that is, along the direction approaching the FPC, the loss of the first touch signal by each first touch lead 21′ gradually decreases. As can be seen from the above, the loss of the touch signal on each capacitor is not much different. For multiple second touch signals (such as trigger signals) of the same strength, after passing through multiple capacitors at different positions, the strength of the first touch signals (such as received signals) received on multiple first touch electrode blocks 21 at different positions is not much different. Then, for the first touch signal with little difference in strength, after being transmitted to the touch IC through different first touch leads 21′ (different first touch leads 21′ have different loads), the strength of the first touch signal received by the touch IC is different. The touch IC determines the capacitance value of the capacitor based on the strength of the first touch signal, thereby determining the touch point. The capacitors in the untouched area (with the same or approximately the same capacitance value) have different capacitance values ​​recognized by the touch IC due to the different loads of the first touch lead 21′. Therefore, due to the different loads of the first touch lead 21′, the capacitance values ​​of the capacitors in the touch screen 100 are poorly uniform. In theory, the capacitance value of the capacitor at the touch point changes, while the capacitance value of the non-touch point does not change, so the touch point can be accurately determined. However, due to the different loads of the first touch lead 21′, the capacitance value of the capacitor will be lost to varying degrees, which makes the touch IC recognize that the capacitance values ​​of multiple capacitors have changed after processing the received signal. This results in that the touch point cannot be accurately determined by judging the capacitance value of each capacitor, and the touch position error is prone to occur. In addition, when the load of a first touch lead 21' is too large, the signal of the capacitor coupled to the first touch lead 21' will have a large loss when it is transmitted on the first touch lead 21'. As a result, the signal strength received by the touch IC is small or no signal is received, affecting the touch accuracy.

[0118] Similarly, if Figure 4 As shown, the distance from each row of second touch electrode blocks to one side (eg, the right side) of the touch area S is different.

[0119] For example, one end of each row of second touch electrode blocks close to the lower side of the touch area S is coupled to a second touch lead 22′, and the lengths of the second touch leads 22′ are not completely the same. Therefore, the resistances of the second touch leads 22′ are not completely the same, and the loads of the second touch leads 22′ are not completely the same. Then, the loss of the second touch signal on the second touch lead 22′ is not completely the same. For example, the second touch lead 22′ coupled to the row of second touch electrodes that is most away from the extension direction of the second touch lead 22′ has the longest length, the largest load, and the largest loss of the second touch signal.

[0120] For example, one end of each row of second touch electrode blocks close to the upper side of the touch area S is coupled to a corresponding second touch lead 22′, and the length of each second touch lead 22′ is also different. Therefore, the resistance of each second touch lead 22′ is also different, and the load of each second touch lead 22′ is also different. Therefore, the loss of the second touch signal on each second touch lead 22′ is also different. In addition, along the extension direction of the second touch lead 22′, the length of the second touch lead 22′ coupled to one end of the upper side of each row of second touch electrode blocks gradually decreases, and the load of the second touch lead 22′ coupled to one end of the upper side of each row of second touch electrode blocks gradually decreases. Therefore, the loss of the second touch signal on the second touch lead 22′ coupled to one end of the upper side of each row of second touch electrode blocks gradually decreases.

[0121] Based on this, after the touch IC transmits the second touch signal (for example, a trigger signal) of the same intensity, after being transmitted through different second touch leads 22′ (for example, transmitted to the second touch electrode block), the second touch signals received by the second touch electrode blocks are different. As can be seen from the above description, the loss of the touch signal on each capacitor is not much different. Therefore, the different loads of the second touch leads 22′ will result in different initial capacitance values ​​of the capacitors. Then, the intensity of the corresponding first touch signal (for example, a received signal) received by the first touch electrode block 21 of each capacitor is different. When the first touch signal (for example, a received signal) is transmitted to the touch IC via the first touch lead 21′, the intensity of the first touch signal received by the touch IC is also different.

[0122] The touch IC determines the touch point by judging the capacitance value of the capacitor according to the strength of the first touch signal. Theoretically, the capacitance value of the capacitor at the touch point changes, while the capacitance value at the non-touch point does not change, so the touch point can be accurately determined. At this time, due to the different loads of the second touch leads 22', the initial capacitance values ​​of each capacitor are different. Even if no touch occurs, if the capacitor with the largest capacitance value is used as the reference, the capacitance values ​​of the other capacitors are equivalent to changes (no touch action actually occurs). Therefore, the touch IC will recognize that the capacitance values ​​of multiple capacitors have changed. This results in the inability to accurately determine the touch point by judging the capacitance values ​​on each capacitor, which means that the problem of touch position error is prone to occur. In addition, when the load of a second touch lead 22′ is too large, the initial capacitance value of the capacitor coupled to the second touch lead 22′ is too small, so that the strength of the first touch signal received by the first touch electrode block 21 of the capacitor is too small. The first touch signal is transmitted to the touch IC via the first touch lead 21′ (there will also be losses on the first touch lead 21′), resulting in the touch IC receiving the first touch signal with a smaller strength or no signal being received, affecting the touch accuracy.

[0123] In order to solve the above problem, the embodiment of the present application further provides a touch sensing layer 2, by increasing the length of the touch lead (different touch leads have different increased lengths) on the lower side of the touch area S of the touch sensing layer 2 (that is, the side where the FPC is located) to compensate for the resistance of the touch lead, so that the resistance of each touch lead is not much different. For example, Figure 6 As shown, at the lower side of the touch area S of the touch sensing layer 2, winding resistance compensation is performed on each first touch lead 21' ( Figure 6 The winding compensation area is shown in the middle), so that the resistance of each first touch lead 21 ′ is not much different, thereby reducing the difference in the strength of each first touch signal and improving the uniformity of the touch signal of the touch screen 100.

[0124] However, this will result in a larger area of ​​the FPC side of the touch sensing layer 2 , which will further cause the lower frame of the display device 1000 to be wider, and cannot meet the market demand for a narrow-frame display device 1000 .

[0125] Example 2

[0126] In order to solve the above problems, the present application embodiment further provides a touch sensing layer 2. Fig. 7A As shown, the touch sensing layer 2 includes a first touch auxiliary portion 210, a plurality of first touch electrode blocks 21, a plurality of second touch electrode blocks 22, a plurality of first touch leads 21', a plurality of second touch leads 22', a first signal shielding line 23, a touch IC and an FPC.

[0127] The FPC, the touch IC and the first signal shielding line 23 provided in this example may be the same as those in Example 1, and reference may be made to the relevant description in Example 1, which will not be repeated here.

[0128] In this example, the structures of the first touch electrode block 21 and the second touch electrode block 22 may be the same as those in Example 1, and reference may be made to the relevant description in Example 1, which will not be repeated here.

[0129] For ease of description, the present application embodiment takes the touch area S as a rectangle as an example for description. Based on this, the lead area Q is divided into parts located on four sides of the touch area S. For example, the four sides of the touch area S are respectively a first side and a second side opposite to each other, and a third side and a fourth side intersecting the first side and the second side and arranged opposite to each other.

[0130] like Fig. 7A As shown, the touch sensing layer 2 includes at least one first touch auxiliary portion 210. Fig. 7A The touch sensing layer 2 includes a plurality of first touch auxiliary portions 210 for illustration purposes only.

[0131] In a group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area S, at least some of the first touch electrode blocks 21 are provided with a first touch auxiliary portion 210 on the side facing the wiring area Q. The first touch auxiliary portion 210 is used to improve the touch signal in the touch sensing layer 2.

[0132] It can be understood that, taking the touch area S as a rectangle as an example, the first touch electrode blocks 21 are arranged in an array in the touch area S. A group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area S can be a group of first touch electrode blocks facing the left side in the outermost circle of the touch area S ( Fig. 7A As shown in FIG. 1 ). A group of first touch electrode blocks at the outermost periphery and close to the same side of the touch area S may also be a group of first touch electrode blocks facing right in the outermost circle. A group of first touch electrode blocks at the outermost periphery and close to the same side of the touch area S may also be a group of first touch electrode blocks facing upward in the outermost circle. A group of first touch electrode blocks at the outermost periphery and close to the same side of the touch area S may also be a group of first touch electrode blocks facing downward in the outermost circle.

[0133] Wherein, no matter which side of a group of first touch electrode blocks is close to the touch area S, the first touch auxiliary portion 210 is disposed next to the group, and the plurality of first touch electrode blocks 21 in the group are insulated from each other.

[0134] In some embodiments, Fig. 7AAs shown, the first touch auxiliary portion 210 is respectively coupled to the first touch electrode block 21 and the first touch lead 21 ′ adjacent to the first touch auxiliary portion 210 , so as to improve the touch signal of the touch sensing layer 2 by compensating the resistance of the first touch lead 21 ′.

[0135] That is, the first touch auxiliary part 210 is located between the first touch lead 21' and the first touch electrode block 21. Alternatively, it can be understood that the first touch auxiliary part 210 is provided on the side of a group of first touch electrode blocks located at the outermost periphery and close to the touch area S where the first touch lead 21' is provided, and the side facing the wiring area Q is provided with the first touch auxiliary part 210.

[0136] Next, the location of the first touch auxiliary portion 210 and the arrangement of the first touch lead 21 ′ and the second touch lead 22 ′ are described by way of example.

[0137] In some embodiments, the touch area S is a rectangle.

[0138] Optional, such as Fig. 7A As shown, the first side and the second side of the touch area S are the long sides of the touch area S (eg, the left side and the right side), and the third side and the fourth side of the touch area S are the short sides of the touch area S (eg, the upper side and the lower side).

[0139] Or, optionally, the first side and the second side of the touch area S are short sides of the touch area S, and the third side and the fourth side of the touch area S are long sides of the touch area S.

[0140] In the first possible embodiment provided in the present application, as Fig. 7A As shown, the first side and the second side of the touch area S are the long sides of the touch area S, and the third side and the fourth side of the touch area S are the short sides of the touch area S.

[0141] A row of first touch electrode blocks is only coupled to the first touch line leads 21 ′ located at the first side of the touch area S.

[0142] It can be understood that the first touch electrode blocks in the same row are arranged in sequence along the short side of the touch area S, and the number of first touch electrode blocks 21 included in a row of first touch electrode blocks is relatively small, and the first touch signal is transmitted along the row of first touch electrode blocks 21 coupled to the first touch lead 21'. Although the first touch signal will gradually attenuate with the increase of the transmission distance. However, in the case where the number of first touch electrode blocks 21 is small, coupling the first touch electrode blocks in a row with the first touch lead 21' at only one end is sufficient to ensure that the first touch electrode block 21 farthest from the first touch lead 21' in the row of first touch electrode blocks receives the first touch signal.

[0143] In some embodiments, a plurality of first touch electrode blocks 21 having first touch auxiliary portions 210 disposed on a side facing the wiring area Q are arranged in sequence along the first direction Y.

[0144] Alternatively, it can be understood that the plurality of first touch electrode blocks 21 provided with the first touch auxiliary portion 210 on the same side of the wiring area Q are arranged close to the first side of the touch area S. At this time, the outermost group of first touch electrode blocks close to the same side of the touch area S is a group of first touch electrode blocks in the outermost circle of the touch area S facing the first side.

[0145] In some embodiments provided in this application, Fig. 7A As shown, all the first touch electrode blocks 21 in a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S are provided with a first touch auxiliary portion 210 on the side facing the wiring area Q.

[0146] In some other embodiments provided in this application, Figure 7B As shown, a first touch auxiliary portion 210 is provided on a side of a portion of the first touch electrode blocks 21 in a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and facing the wiring area Q.

[0147] For example, Figure 7B As shown, the first touch lead 21 ′ extends along a third direction at a first side of the touch region S. The third direction is parallel to the first direction Y, and the third direction is a direction toward the FPC.

[0148] In a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S, the first touch electrode block 21 which is farthest from the third direction has no first touch auxiliary part 210 on the side facing the wiring area Q, and the first touch electrode block 21 is directly coupled to the first touch lead 21′.

[0149] That is to say, among the multiple first touch electrode blocks 21 arranged in sequence along the first direction Y, the first touch electrode block 21 farthest from the FPC has no first touch auxiliary part 210 on its side facing the wiring area Q, while the other first touch electrode blocks 21 have the first touch auxiliary part 210 on their side facing the wiring area Q.

[0150] Since the first touch auxiliary part 210 itself also has resistance, the first touch lead 21′ is coupled to the first touch electrode block 21 through the first touch auxiliary part 210, which is equivalent to increasing the load of the first touch lead 21′. As described in Example 1, the length of the first touch lead 21′ coupled to the first touch electrode block 21 farthest from the FPC is relatively the longest and the resistance is the largest, so resistance compensation is not required. Therefore, in the embodiment of the present application, by not providing the first touch auxiliary part 210 on the side of the first touch electrode block 21 farthest from the FPC facing the routing area Q, it is equivalent to taking the first touch lead 21′ coupled to the first touch electrode block 21 farthest from the FPC as a reference, and performing resistance compensation on other first touch leads 21′, so that the resistance on each first touch lead 21′ can be equal or approximately equal, that is, the loss of each first touch lead 21′ to the first touch signal is equal or approximately equal. In this way, the capacitance values ​​of the capacitors at the non-touch positions obtained by the touch IC are not much different, and the capacitance uniformity of the touch screen 100 is relatively good. In other words, the capacitance value of the capacitor at the touched position will change, and the capacitance value of the capacitor at the untouched position will remain unchanged or approximately unchanged. Therefore, by judging the capacitance value on each capacitor, the touch point can be determined relatively accurately.

[0151] Or, for example, among the multiple first touch electrode blocks 21 arranged in sequence along the first direction Y, the multiple first touch electrode blocks 21 relatively far away from the FPC have no first touch auxiliary part 210 on the side facing the wiring area Q, while the other first touch electrode blocks 21 have the first touch auxiliary part 210 on the side facing the wiring area Q.

[0152] Regarding the first touch lead 21 ′, a plurality of first touch lead 21 ′ form a group, one end of the first touch lead 21 ′ located at the first side of the touch area S is the first end, and one end of the first touch lead 21 ′ located at the third side of the touch area S is the second end.

[0153] The first touch auxiliary portion 210 is disposed between the first touch electrode block 21 and the first end of the first touch lead 21 ′, and is respectively coupled to the first touch electrode block 21 and the first end of the first touch lead 21 ′ adjacent to the first touch auxiliary portion 210 .

[0154] That is, the first touch auxiliary portion 210 is disposed between the first touch electrode block 21 and the first touch lead 21′, and the first end of the first touch lead 21′ is coupled to the first touch electrode block 21 through the first touch auxiliary portion 210. In the case where the first touch auxiliary portion 210 is not disposed between the first end of the first touch lead 21′ and the first touch electrode block 21, the first end of the first touch lead 21′ is directly coupled to the first touch electrode block 21.

[0155] The second end of the first touch lead 21 ′ is coupled to the FPC (that is, the FPC is located at the third side of the touch area S).

[0156] Regarding the second touch leads 22 ′, the plurality of second touch leads 22 ′ are divided into two groups. The second touch leads 22 ′ of the first group extend from the fourth side of the touch area S through the second side to the third side.

[0157] That is to say, two ends of each row of second touch electrode blocks are respectively coupled to one second touch lead 22 ′ in each group.

[0158] It can be understood that the second touch electrode blocks in the same row are arranged in sequence along the long side of the touch area S, and the number of second touch electrode blocks 22 included in a row of second touch electrode blocks is relatively large. The second touch signal starts from the first second touch electrode block coupled to the second touch lead 22′, and is transmitted in sequence along the row of second touch electrode blocks in the direction away from the second touch lead 22′. However, as the transmission distance increases, the second touch signal will gradually attenuate. Based on this, when the number of second touch electrode blocks 22 is large, the two ends of the second touch electrode blocks in the same row are respectively coupled to different second touch leads 22′, which can ensure that the second touch electrode block 22 farthest from the second touch lead 22′ in the row of second touch electrode blocks receives the second touch signal.

[0159] The end of the second touch lead 22′ of the first group located on the fourth side of the touch area S is the first end, and the end of the second touch lead 22′ located on the third side of the touch area S is the second end. The first end and the second end of the second touch lead 22′ of the second group are both located on the third side of the touch area S. The first end of the second touch lead 22′ is coupled to a row of second touch electrode blocks close to the first end of the second touch lead 22′, and the second end of the second touch lead 22′ is coupled to the touch IC.

[0160] It can be seen from the above description that the first touch electrode block 21 and the second touch electrode block 22 are trigger electrode blocks Tx and receiving electrode blocks Rx for each other. The first touch lead 21′ and the second touch lead 22′ are trigger signal leads Tx′ and receiving signal leads Rx′ for each other. Therefore, Fig. 7A The wiring arrangement shown may also be referred to as 2T1R or 1T2R.

[0161] In this way, the wiring method of the touch leads can be either 2T1R or 1T2R. The wiring methods are diversified and can be applicable to touch screens 100 with different aspect ratios.

[0162] In some embodiments, Figure 7CAs shown, the touch sensing layer 2 further includes at least one second touch auxiliary portion 220. Figure 7C In the figure, the touch sensing layer 2 includes a plurality of second touch auxiliary portions 220 as an example for illustration.

[0163] The second touch auxiliary portion 220 is disposed between the second touch electrode block 22 and the second touch lead 22 ′, and the second touch auxiliary portion 220 is coupled to the second touch electrode block 22 and the second touch lead 22 ′ respectively.

[0164] In a possible embodiment, Figure 7C As shown, a plurality of second touch electrode blocks 22 of the second touch auxiliary portion 220 are arranged in sequence along the second direction X on one side facing the wiring area Q.

[0165] Alternatively, it can be understood that the second touch electrode blocks 22 of the second touch auxiliary portion 220 are disposed on the side facing the wiring area Q and are disposed close to the fourth side of the touch area S.

[0166] In some embodiments provided in this application, Figure 7C As shown, a second touch auxiliary portion 220 is provided on a side facing the routing area Q of all the second touch electrode blocks 22 of a plurality of second touch electrode blocks 22 coupled to a group of second touch leads 22 ′.

[0167] In some other embodiments provided in this application, Fig.7D As shown, a second touch auxiliary portion 220 is provided on a side facing the wiring area Q of some of the second touch electrode blocks 22 coupled to a group of second touch leads 22 ′.

[0168] For example, among the plurality of second touch electrode blocks 22 coupled to a group of second touch leads 22 ′, the second touch electrode blocks 22 close to the first side of the touch area S have no second touch auxiliary portion 220 disposed on the side facing the routing area Q.

[0169] Since the second touch auxiliary part 220 itself also has resistance, the second touch lead 22' is coupled to the second touch electrode block 22 through the second touch auxiliary part 220, which is equivalent to increasing the load of the second touch lead 22'. As described in Example 1, the length of the second touch lead 22' coupled to the second touch electrode block 22 farthest from the extension direction of the second touch lead 22' is relatively the longest, or the length of the second touch lead 22' coupled to the second touch electrode block 22 closest to the first side of the touch area S is relatively the longest, and the resistance of the second touch lead 22' is the largest, so resistance compensation is not required. Therefore, in the embodiment of the present application, by not providing the second touch auxiliary part 220 on the side of the second touch electrode block 22 closest to the first side of the touch area S, which faces the wiring area Q, it is equivalent to taking the second touch lead 22′ coupled to the second touch electrode block 22 closest to the first side of the touch area S as a reference, and performing resistance compensation on other second touch leads 22′, so that the resistance on each second touch lead 22′ can be equal or approximately equal. Therefore, the loss of each second touch lead 22′ to the second touch signal is equal or approximately equal. Then, the actual capacitance value of each capacitor at the non-touched position will not be much different, and the capacitance uniformity of the touch screen 100 is relatively good. The capacitance value of the capacitor at the touched position will change, and the capacitance value of the capacitor at the untouched position will remain unchanged or approximately unchanged. By judging the capacitance value on each capacitor, the touch point can be determined relatively accurately.

[0170] In another possible embodiment, Fig. 7E As shown, the second touch electrode blocks 22 provided with the second touch auxiliary portion 220 on the side facing the wiring area Q are divided into two groups, and the second touch electrode blocks 22 in each group are arranged in sequence along the second direction X.

[0171] Alternatively, it can be understood that the second touch electrode blocks 22 in one group are arranged close to the third side of the touch area S, and at least some of the second touch electrode blocks 22 in the group are provided with the second touch auxiliary portion 220 on the side facing the third side of the touch area S. The second touch electrode blocks 22 in another group are arranged close to the fourth side of the touch area S, and at least some of the second touch electrode blocks 22 in the group are provided with the second touch auxiliary portion 220 on the side facing the fourth side of the touch area S.

[0172] The positional relationship between the second touch electrode blocks 22 and the second touch auxiliary parts 220 in each group can refer to the above-mentioned situation that the plurality of second touch electrode blocks 22 provided with the second touch auxiliary parts 220 on the side facing the routing area Q are only grouped together, which will not be described again.

[0173] In some embodiments, the touch sensing layer 2 further includes a second signal shielding line 24. Figures 7A-7EAs shown, the second signal shielding line 24 is located at the second side of the touch area S, and is disposed between the touch area S and the second touch lead 22 ′ closest to the touch area S. The extension direction of the second signal shielding line 24 is parallel to the first direction Y. One end of the second signal shielding line 24 is coupled to the touch IC, and the other end of the second signal shielding line 24 is floating.

[0174] The shielding signal transmitted on the second signal shielding line 24 may be the same as the shielding signal transmitted on the first signal shielding line 23. The shielding signal on the second signal shielding line 24 can prevent the second touch signal on the second touch lead 22' from crosstalking with the first touch signal on the first touch electrode block 21 close to the second touch lead 22'.

[0175] In the second possible embodiment provided in the present application, as Fig. 8A As shown, the first side and the second side of the touch area S are the long sides of the touch area S, and the third side and the fourth side of the touch area S are the short sides of the touch area S.

[0176] Alternatively, the first side and the second side of the touch area S are short sides of the touch area S, and the third side and the fourth side of the touch area S are long sides of the touch area S. The following description only takes the first side and the second side of the touch area S as the long sides of the touch area S as an example.

[0177] Two ends of a row of first touch electrode blocks are respectively coupled to different first touch line leads 21 ′.

[0178] The first touch auxiliary portion 210 is disposed between the first touch electrode block 21 and the first end of the first touch lead 21 ′.

[0179] It may be, in some embodiments, Fig. 8A As shown, a first touch auxiliary portion 210 is disposed between a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and a group of first touch leads 21 ′. A first touch auxiliary portion 210 is also disposed between a group of first touch electrode blocks located at the outermost periphery and close to the second side of the touch area S and a group of first touch leads 21 ′.

[0180] Alternatively, in some other embodiments, a first touch auxiliary portion 210 is disposed between a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and a group of first touch leads 21'. A group of first touch electrode blocks located at the outermost periphery and close to the second side of the touch area S is directly coupled to a group of first touch leads 21'.

[0181] The first touch electrode blocks 21 in each group are arranged in sequence along the first direction Y.

[0182] Alternatively, it can be understood that the first touch electrode blocks 21 in one group are arranged close to the first side of the touch area S, and at least some of the first touch electrode blocks 21 in the group are provided with the first touch auxiliary portion 210 on the side facing the first side of the touch area S. The first touch electrode blocks 21 in another group are arranged close to the second side of the touch area S, and at least some of the first touch electrode blocks 21 in the group are provided with the first touch auxiliary portion 210 on the side facing the second side of the touch area S.

[0183] The positional relationship between the first touch electrode blocks 21 and the first touch auxiliary parts 210 in each group can refer to the above-mentioned situation where the multiple first touch electrode blocks 21 provided with the first touch auxiliary parts 210 on the side facing the routing area Q are only divided into one group, which will not be repeated here.

[0184] Regarding the first touch leads 21 ′, the plurality of first touch leads 21 ′ are divided into two groups. The first touch leads 21 ′ of the first group extend from the first side of the touch area S to the third side. The first touch leads 21 ′ of the second group extend from the second side of the touch area S to the third side.

[0185] That is to say, two ends of each row of first touch electrode blocks are respectively coupled to one first touch lead 21 ′ in each group.

[0186] Among them, the end of the first touch lead 21' of the first group located on the first side of the touch area S is the first end, and the end of the first touch lead 21' located on the third side of the touch area S is the second end. The end of the first touch lead 21' of the second group located on the second side of the touch area S is the first end, and the end of the first touch lead 21' located on the third side of the touch area S is the second end. The first end of the first touch lead 21' is coupled to a row of first touch electrode blocks close to the first end of the first touch lead 21', and the second end of the first touch lead 21' is coupled to the touch IC.

[0187] Regarding the second touch lead 22 ′, in some embodiments provided in the present application, for example Fig. 8A As shown, the plurality of second touch leads 22 ′ are divided into two groups. The second touch leads 22 ′ of the first group extend from the fourth side of the touch area S through the second side to the third side. The second touch leads 22 ′ of the second group are located on the third side of the touch area S.

[0188] That is to say, both ends of each row of second touch electrode blocks are respectively coupled to a second touch lead 22' in each group. Fig. 7A The description of the second touch lead 22 ′ is not repeated here.

[0189] therefore, Fig. 8AThe wiring method shown can also be called 2T2R. This wiring method can ensure that in a row of touch electrode blocks coupled to the touch leads, the touch signals received by the touch electrode blocks farther away from the touch leads and the touch signals received by the touch electrode blocks closer to the touch leads are not much different, thereby ensuring the touch accuracy of the relatively large touch screen 100.

[0190] In some embodiments, Figure 8B As shown, the touch sensing layer 2 further includes at least one second touch auxiliary portion 220. Figure 8B In the figure, the touch sensing layer 2 includes a plurality of second touch auxiliary portions 220 as an example for illustration.

[0191] The configuration of the second touch auxiliary portion 220 may be the same as that in the first possible embodiment, and reference may be made to the description of the second touch auxiliary portion 220 in the first possible embodiment.

[0192] In some embodiments, Figures 8A-8B As shown, the touch sensing layer 2 further includes a second signal shielding line 24. The second signal shielding line 24 is located at the second side of the touch area S, and is disposed between the first touch lead 21′ farthest from the first side of the touch area S and the second touch lead 22′ closest to the touch area S. The extension direction of the second signal shielding line 24 is parallel to the first direction Y. One end of the second signal shielding line 24 is coupled to the touch IC, and the other end of the second signal shielding line 24 is floating. The shielding signal on the second signal shielding line 24 can prevent the second touch signal on the second touch lead 22′ from crosstalking with the first touch signal on the first touch lead 21′ close to the second touch lead 22′.

[0193] In the third possible embodiment provided in the present application, as Fig. 9A As shown, the first side and the second side of the touch area S are the short sides of the touch area S (such as the left side and the right side), and the third side and the fourth side of the touch area S are the long sides of the touch area S (such as the upper side and the lower side).

[0194] The first touch auxiliary portion 210 is disposed between the first touch electrode block 21 and the first end of the first touch lead 21 ′.

[0195] It may be, in some embodiments, Fig. 9A As shown, a first touch auxiliary portion 210 is disposed between a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and a group of first touch leads 21 ′. A first touch auxiliary portion 210 is also disposed between a group of first touch electrode blocks located at the outermost periphery and close to the second side of the touch area S and a group of first touch leads 21 ′.

[0196] Alternatively, in some other embodiments, a first touch auxiliary portion 210 is disposed between a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and a group of first touch leads 21'. A group of first touch electrode blocks located at the outermost periphery and close to the second side of the touch area S is directly coupled to a group of first touch leads 21'.

[0197] The first touch electrode blocks 21 in each group are arranged in sequence along the first direction Y.

[0198] Alternatively, it can be understood that the first touch electrode blocks 21 in one group are arranged close to the first side of the touch area S, and at least some of the first touch electrode blocks 21 in the group are provided with the first touch auxiliary portion 210 on the side facing the first side of the touch area S. The first touch electrode blocks 21 in another group are arranged close to the second side of the touch area S, and at least some of the first touch electrode blocks 21 in the group are provided with the first touch auxiliary portion 210 on the side facing the second side of the touch area S.

[0199] Regarding the first touch leads 21 ′, the plurality of first touch leads 21 ′ are divided into two groups. The first touch leads 21 ′ of the first group extend from the first side of the touch area S to the third side. The first touch leads 21 ′ of the second group extend from the second side of the touch area S to the third side.

[0200] That is to say, two ends of each row of first touch electrode blocks are respectively coupled to one first touch lead 21 ′ in each group.

[0201] Regarding the second touch wires 22 ′, a plurality of second touch wires 22 ′ form a group, and the second touch wires 22 ′ extend from the fourth side of the touch region S through the second side to the third side.

[0202] That is, one end of each row of second touch electrode blocks is coupled to the second touch lead 22 ′.

[0203] therefore, Fig. 9A The wiring method shown can also be called 2T1R or 1T2R. In this way, the wiring method of the touch lead can be 2T1R or 1T2R. The wiring method is diversified and can be applicable to touch screens 100 with different aspect ratios.

[0204] In some embodiments, Fig. 9B As shown, the touch sensing layer 2 further includes at least one second touch auxiliary portion 220. Fig. 9B In the figure, the touch sensing layer 2 includes a plurality of second touch auxiliary portions 220 as an example for illustration.

[0205] In some embodiments, a plurality of second touch electrode blocks 22 having second touch auxiliary portions 220 disposed on a side facing the routing area Q are arranged in sequence along the second direction X.

[0206] Alternatively, it can be understood that the second touch electrode blocks 22 of the second touch auxiliary portion 220 are disposed on the side facing the wiring area Q and are disposed close to the third side or the fourth side of the touch area S.

[0207] The second touch auxiliary portion 220 may be disposed in the same manner as the case where the second touch auxiliary portion 220 is disposed on one side in the first possible embodiment. Reference may be made to the description of the second touch auxiliary portion 220 in the first possible embodiment.

[0208] In some embodiments, Figures 9A-9B As shown, the touch sensing layer 2 further includes a second signal shielding line 24. The second signal shielding line 24 is located at the fourth side of the touch area S, and is disposed between the touch area S and the first touch lead 21' closest to the touch area S. The extension direction of the second signal shielding line 24 is parallel to the first direction Y. One end of the second signal shielding line 24 is coupled to the touch IC, and the other end of the second signal shielding line 24 is floating.

[0209] The shielding signal transmitted on the second signal shielding line 24 may be the same as the shielding signal transmitted on the first signal shielding line 23. The shielding signal on the second signal shielding line 24 can prevent the first touch signal on the first touch lead 21' from crosstalking with the second touch signal on the second touch electrode block 22 close to the first touch lead 21'.

[0210] like Figures 7A-9B As shown, when the touch area S is a rectangle, the wiring modes of the first touch lead 21 ′ and the second touch lead 22 ′ include 2TR, 1T2R or 2T2R. The wiring modes are diversified and applicable to touch screens 100 with different aspect ratios and different sizes.

[0211] Regarding the location of the first touch auxiliary portion 210 , in some embodiments of the present application, the first touch auxiliary portion 210 is located in the routing area Q.

[0212] In some other embodiments of the present application, the first touch auxiliary portion 210 is partially located in the routing area Q and partially located in the touch area S.

[0213] In this way, the requirement on the accuracy of the position of the first touch auxiliary portion 210 is relatively low, and the process accuracy when manufacturing the first touch auxiliary portion 210 can be reduced.

[0214] In some other embodiments of the present application, the first touch auxiliary portion 210 is located in the touch area S.

[0215] As can be seen from the above description, the touch area S overlaps with the display area of ​​the display device 1000, and the wiring area Q is located in the peripheral area of ​​the display device 1000. In this way, it is possible to avoid the problem that when the first touch auxiliary portion 210 is disposed in the wiring area Q outside the touch area S, the wiring area Q is enlarged, and the peripheral area of ​​the display device 1000 is enlarged, resulting in a wider frame of the display device 1000.

[0216] Regardless of the region in which the first touch auxiliary portion 210 is disposed, the first touch auxiliary portion 210 may be a first touch auxiliary portion 210 of the same structure.

[0217] Regarding the structure of the first touch auxiliary portion 210, in some embodiments, as shown in FIG. Fig.10 As shown, the first touch auxiliary portion 210 and the first touch electrode block 21 are both metal mesh structures.

[0218] It should be noted that Fig.10 The example in which the first touch electrode block 21 is a receiving electrode block Rx and the second touch electrode block 22 is a trigger electrode block Tx is used for illustration. A dummy element pattern is arranged in the middle of the trigger electrode block Tx to balance the load of the trigger electrode block Tx.

[0219] Among them, Fig.10 As shown, when the first touch auxiliary part 210 is located in the touch area S, the first touch electrode block 21 can be processed to convert part of the structure originally belonging to the first touch electrode block 21 into the first touch auxiliary part 210. The first touch auxiliary part 210 and the first touch electrode block 21 can be arranged in the same layer, formed synchronously, and made of the same material, which can simplify the process steps. In addition, the first touch auxiliary part 210 is a metal grid structure, which can avoid the problem of uneven display in the edge area and the middle area of ​​the display device 1000 when the first touch auxiliary part 210 is a block structure. Therefore, it is beneficial to improve the display effect of the display device 1000.

[0220] For example, the metal mesh used as the first touch electrode block 21 is a structure connected in all directions. That is, the signal is transmitted in all directions along the mesh. After processing, the metal mesh used as the first touch auxiliary part 210 is interrupted to make the mesh structure a single-route signal transmission structure. That is, the signal is transmitted along a single route.

[0221] In this way, one side of the metal grid of the first touch auxiliary part 210 is coupled to the first end of the first touch lead 21', and the other side of the metal grid of the first touch auxiliary part 210 is coupled to the first touch electrode block 21 near the first end. The first touch lead 21', the first touch auxiliary part 210 and the first touch electrode block 21 are connected to transmit the first touch signal.

[0222] For example, the first touch signal on the first touch lead 21′ is transmitted to the first touch auxiliary portion 210, and the first touch signal on the first touch auxiliary portion 210 is transmitted along the detour direction of the metal grid of the first touch auxiliary portion 210, and finally transmitted to the first touch electrode block 21. Alternatively, the first touch signal on the first touch electrode block 21 is transmitted to the first touch auxiliary portion 210, and the first touch signal on the first touch auxiliary portion 210 is transmitted along the detour direction of the metal grid of the first touch auxiliary portion 210, and finally transmitted to the first touch lead 21′.

[0223] In some embodiments, the first touch auxiliary portion 210 and the first touch electrode block 21 may be disposed in the same layer and formed simultaneously to simplify the manufacturing process.

[0224] It should be noted that the first touch auxiliary portion 210 compensates the resistance of each first touch lead 21′ through its own resistance, and the size of the metal mesh area of ​​the first touch auxiliary portion 210 is directly related to the resistance of the first touch auxiliary portion 210. Therefore, the size of the area of ​​the first touch auxiliary portion 210 depends on the resistance value to be compensated. The larger the resistance value to be compensated, the larger the area of ​​the first touch auxiliary portion 210.

[0225] Regarding the structure of the first touch auxiliary portion 210, in some other embodiments provided in the present application, the first touch auxiliary portion 210 is a metal block or a non-grid winding structure, etc.

[0226] It can be known from the above description that the resistance of each first touch lead 21 ′ is different, and therefore, the resistance value to be compensated of each first touch lead 21 ′ is different.

[0227] In some embodiments provided in this application, Fig.11 As shown, along the extension direction of the first touch lead 21' on the first side of the touch area (for example, the third direction mentioned above, in Fig.11 In the structure shown, the third direction is parallel to the first direction Y, and may also be a direction close to the FPC, and the resistance of the first touch auxiliary portion 210 gradually increases.

[0228] The resistance of the first touch auxiliary portion 210 gradually increases, which can be understood as follows: along the third direction, the resistance of the next first touch auxiliary portion 210 is greater than the resistance of the previous first touch auxiliary portion 210 .

[0229] It can be seen from Example 1 that along the third direction, the resistance of the first touch lead 21 ′ gradually decreases, and the line loss of the first touch lead 21 ′ gradually decreases. Therefore, by setting the first touch auxiliary part 210 so that the resistance of the first touch auxiliary part 210 gradually increases along the third direction, it can be achieved that when the resistance of the first touch lead 21 ′ is large, the resistance of the first touch auxiliary part 210 matched and coupled therewith is small. When the resistance of the first touch lead 21 ′ is small, the resistance of the first touch auxiliary part 210 matched and coupled therewith is large. As a result, the resistance of each pair of first touch leads 21 ′ coupled to each row of first touch electrodes 21 plus the first touch auxiliary part 210 is equal or approximately equal. In other words, the load of each pair of first touch leads 21 ′ coupled to each row of first touch electrodes 21 plus the first touch auxiliary part 210 is equal or approximately equal. In this way, on the one hand, it is beneficial to improve the touch uniformity of the touch screen 100, and finally reduce the possibility of inaccurate touch problems on the touch screen 100. On the other hand, by adding a first touch auxiliary portion 210 located in the touch area S to compensate for the resistance of each first touch lead 21′, the problem of compensating for the resistance of each first touch lead 21′ by increasing the length of each first touch lead 21′ is avoided, thereby meeting the market demand for a narrow-border display device 1000.

[0230] In some embodiments provided in the present application, at least two of the first touch lead 21 ′, the first touch auxiliary portion 210 , and the first touch electrode block 21 are made of the same layer and the same material.

[0231] That is, any two of the first touch lead 21 ′, the first touch auxiliary portion 210 and the first touch electrode block 21 can be made of the same layer and material. The first touch lead 21 ′, the first touch auxiliary portion 210 and the first touch electrode block 21 can also be made of the same layer and material.

[0232] It can also be understood that at least two of the first touch lead 21′, the first touch auxiliary portion 210, and the first touch electrode block 21 can be formed simultaneously using a patterning process (for example, including exposure, development, etching, etc.) with the same layer and the same material. In this way, on the one hand, the process steps for preparing the first touch lead 21′, the first touch auxiliary portion 210, and the first touch electrode block 21 can be simplified, and on the other hand, the moiré phenomenon that is easy to occur when the first touch auxiliary portion 210 and the first touch electrode block 21 are in different layers can be avoided, that is, various stripes appear on the display screen of the display device 1000, thereby helping to improve the display effect of the display device 1000.

[0233] The second touch auxiliary portion 220 may be disposed at the same position as the first touch auxiliary portion 210 .

[0234] In some embodiments provided in the present application, the second touch auxiliary portion 220 is located in the routing area Q.

[0235] In some other embodiments provided in the present application, the second touch auxiliary portion 220 is partially located in the wiring area Q and partially located in the touch area S. In this way, the accuracy requirement for the location of the second touch auxiliary portion 220 is relatively low, which can reduce the process accuracy when preparing the second touch auxiliary portion 220.

[0236] In some other embodiments provided in the present application, the second touch auxiliary portion 220 is located in the touch area S.

[0237] As can be seen from the above description, the touch area S overlaps with the display area of ​​the display device 1000, and the wiring area Q is located in the peripheral area of ​​the display device 1000. In this way, it is possible to avoid the problem that when the second touch auxiliary portion 220 is disposed in the wiring area Q outside the touch area S, the wiring area Q is enlarged, and the peripheral area of ​​the display device 1000 is enlarged, resulting in a wider frame of the display device 1000.

[0238] Regardless of the region in which the second touch auxiliary portion 220 is disposed, the second touch auxiliary portion 220 may be a second touch auxiliary portion 220 of the same structure.

[0239] The structure of the second touch auxiliary portion 220 may be the same as that of the first touch auxiliary portion 210 , and reference may be made to the above description of the first touch auxiliary portion 210 .

[0240] In some embodiments provided in the present application, the second touch auxiliary part 22 is a metal mesh structure. By processing the second touch electrode block 22, part of the structure originally belonging to the second touch electrode block 22 is used as the second touch auxiliary part 220. The second touch auxiliary part 220 and the first touch electrode block 21 can be arranged in the same layer, formed synchronously, and made of the same material, which can simplify the process steps. In addition, the first touch auxiliary part 210 is a metal mesh structure, which can avoid the problem of uneven display in the edge area and the middle area of ​​the display device 1000 when the first touch auxiliary part 210 is a block structure. Therefore, it is beneficial to improve the display effect of the display device 1000.

[0241] In some other embodiments provided in the present application, the first touch auxiliary portion 210 is a metal block or a non-grid winding structure, etc.

[0242] In some embodiments, the first touch auxiliary portion 210 and the second touch auxiliary portion 220 are disposed in the same layer and formed simultaneously, so that the process steps for preparing the first touch auxiliary portion 210 and the second touch auxiliary portion 220 can be simplified.

[0243] In some other embodiments, the touch area S is a square.

[0244] like Fig. 12A As shown, the first side and the second side of the touch area S are arranged opposite to each other, and the third side and the fourth side of the touch area S are arranged opposite to each other. The FPC and the touch IC are arranged on the third side of the touch area S.

[0245] In the first possible embodiment provided in the present application, as Fig. 12A As shown, a row of first touch electrode blocks is only coupled to the first touch line leads 21 ′ located at the first side of the touch area S. A row of second touch electrode blocks is only coupled to the second touch line leads 22 ′ located at the fourth side of the touch area S. Fig. 12A The wiring method shown is called 1T1R. When the size of the touch screen 100 is small, the 1T1R wiring method can meet the needs without the need for complex wiring methods, thus simplifying the wiring structure.

[0246] In some embodiments, a plurality of first touch electrode blocks 21 having first touch auxiliary portions 210 disposed on a side facing the wiring area Q are arranged in sequence along the first direction Y.

[0247] In some embodiments provided in this application, Fig. 12A As shown, all the first touch electrode blocks 21 in a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S are provided with a first touch auxiliary portion 210 on the side facing the wiring area Q.

[0248] In some other embodiments provided in this application, Fig. 12B As shown, a first touch auxiliary portion 210 is provided on a side of a portion of the first touch electrode blocks 21 in a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and facing the wiring area Q.

[0249] For example, Fig. 12A As shown, the first touch lead 21 ′ extends along a third direction at a first side of the touch region S. The third direction is parallel to the first direction Y, and the third direction is a direction toward the FPC.

[0250] Among the several first touch electrode blocks 21 coupled to the first touch lead 21′, the first touch electrode block 21 close to the fourth side of the touch area S has no first touch auxiliary part 210 on the side facing the routing area Q, and the first touch electrode block 21 is directly coupled to the first touch lead 21′.

[0251] Since the first touch auxiliary part 210 itself also has resistance, the first touch lead 21′ is coupled to the first touch electrode block 21 through the first touch auxiliary part 210, which is equivalent to increasing the load of the first touch lead 21′. As described in Example 1, the length of the first touch lead 21′ coupled to the first touch electrode block 21 farthest from the FPC is relatively the longest and the resistance is the largest, so resistance compensation is not required. Therefore, in the embodiment of the present application, by not providing the first touch auxiliary part 210 on the side of the first touch electrode block 21 farthest from the FPC facing the routing area Q, it is equivalent to taking the first touch lead 21′ coupled to the first touch electrode block 21 farthest from the FPC as a reference, and performing resistance compensation on other first touch leads 21′, so that the resistance on each first touch lead 21′ can be equal or approximately equal, that is, the loss of each first touch lead 21′ to the first touch signal is equal or approximately equal. In this way, the capacitance values ​​of the capacitors at the non-touch positions obtained by the touch IC are not much different, and the capacitance uniformity of the touch screen 100 is relatively good. In other words, the capacitance value of the capacitor at the touched position will change, and the capacitance value of the capacitor at the untouched position will remain unchanged or approximately unchanged. Therefore, by judging the capacitance value on each capacitor, the touch point can be determined relatively accurately.

[0252] Or, for example, among the multiple first touch electrode blocks 21 arranged in sequence along the first direction Y, the multiple first touch electrode blocks 21 relatively far away from the FPC have no first touch auxiliary part 210 on the side facing the wiring area Q, while the other first touch electrode blocks 21 have the first touch auxiliary part 210 on the side facing the wiring area Q.

[0253] Regarding the first touch lead 21 ′, a plurality of first touch lead 21 ′ form a group, one end of the first touch lead 21 ′ located at the first side of the touch area S is the first end, and one end of the first touch lead 21 ′ located at the third side of the touch area S is the second end.

[0254] The first touch auxiliary part 210 is disposed between the first touch electrode block 21 and the first end of the first touch lead 21′, and the first touch auxiliary part 210 is respectively coupled to the first touch electrode block 21 and the first end of the first touch lead 21′ adjacent to the first touch auxiliary part 210. The second end of the first touch lead 21′ is coupled to the FPC (that is, the FPC is located at the third side of the touch area S).

[0255] In some embodiments, Fig. 12C As shown, the touch sensing layer 2 further includes at least one second touch auxiliary portion 220. Fig. 12C In the figure, the touch sensing layer 2 includes a plurality of second touch auxiliary portions 220 as an example for illustration.

[0256] The second touch auxiliary portion 220 is disposed between the second touch electrode block 22 and the second touch lead 22 ′, and the second touch auxiliary portion 220 is coupled to the second touch electrode block 22 and the second touch lead 22 ′ respectively.

[0257] A plurality of second touch electrode blocks 22 of the second touch auxiliary portion 220 are arranged in sequence along the second direction X on one side facing the wiring area Q.

[0258] Regarding the configuration of the second touch auxiliary portion 220, in some embodiments, all second touch electrode blocks 22 in a group of second touch electrode blocks located at the outermost periphery and close to the fourth side of the touch area S are provided with a second touch auxiliary portion 220 on the side facing the routing area Q.

[0259] In some other embodiments, a second touch auxiliary portion 220 is disposed on a side of some second touch electrode blocks 22 in a group of second touch electrode blocks located at the outermost periphery and close to the fourth side of the touch area S and facing the routing area Q.

[0260] Regarding the second touch wires 22 ′, a plurality of second touch wires 22 ′ form a group, and the second touch wires 22 ′ extend from the fourth side of the touch region S through the second side to the third side.

[0261] In some embodiments, Figures 12A-12C As shown, the touch sensing layer 2 further includes a second signal shielding line 24. The second signal shielding line 24 is located at the second side of the touch area S, and is disposed between the touch area S and the second touch lead 22' closest to the touch area S. The extension direction of the second signal shielding line 24 is parallel to the first direction Y. One end of the second signal shielding line 24 is coupled to the touch IC, and the other end of the second signal shielding line 24 is floating.

[0262] In the second possible embodiment provided in the present application, as Fig.13A As shown, a row of first touch electrode blocks is only coupled to the first touch line leads 21 ′ located at the first side of the touch area S. A row of second touch electrode blocks is only coupled to the second touch line leads 22 ′ located at the fourth side of the touch area S. Fig.13A The wiring method shown is also called 1T1R. When the size of the touch screen 100 is small, the 1T1R wiring method can meet the needs without the need for complex wiring methods, thus simplifying the wiring structure.

[0263] The structural positions of the first touch auxiliary portion 210 and the first touch lead 21 ′ are the same as those in the first possible embodiment described above, and reference may be made to the above description of Fig. 12A Description.

[0264] Regarding the second touch wires 22 ′, a plurality of the second touch wires 22 ′ form a group, and the second touch wires 22 ′ are located at the third side of the touch region S. As shown in FIG.

[0265] In some embodiments, Fig. 13B As shown, the touch sensing layer 2 further includes at least one second touch auxiliary portion 220, which is disposed between the second touch electrode block 22 and the second touch lead 22' and is coupled to the second touch electrode block 22 and the second touch lead 22' respectively. Fig. 13B In the figure, the touch sensing layer 2 includes a plurality of second touch auxiliary portions 220 as an example for illustration.

[0266] A plurality of second touch electrode blocks 22 of the second touch auxiliary portion 220 are arranged in sequence along the second direction X on one side facing the wiring area Q.

[0267] All or part of the second touch electrode blocks 22 in a group of second touch electrode blocks located at the outermost periphery and close to the third side of the touch area S, and facing the wiring area Q, are provided with a second touch auxiliary portion 220 .

[0268] In the third possible embodiment provided in the present application, as Fig.14 As shown, two ends of a row of first touch electrode blocks are respectively coupled to different first touch line leads 21 ′, and two ends of a row of second touch electrode blocks are respectively coupled to different second touch line leads 22 ′.

[0269] That is the above Fig. 8A and Figure 8B The 2T2R structure shown is different in that the shape of the touch area S is different, and reference may be made to the above related description, which will not be repeated here.

[0270] like Figure 12A-14 As shown, when the touch area S is a square, the wiring modes of the first touch lead 21 ′ and the second touch lead 22 ′ include 1T1R or 2T2R. The wiring modes are diversified and applicable to touch screens 100 of different sizes.

[0271] In summary, the first touch auxiliary part 210 itself has a resistor, which can compensate for the resistance of the first touch lead 21', so that the load on each first touch lead 21' is not much different, so that the loss of each first touch lead 21' to the first touch signal is equal or approximately equal. Then, the strength of the first touch signal transmitted by each first channel is the same or approximately the same, and the first touch signal can be improved. Similarly, the second touch auxiliary part 220 itself has a resistor, which can compensate for the resistance of the second touch lead 22', so that the load on each second touch lead 22' is not much different, and the loss of each second touch lead 22' to the first touch signal is equal or approximately equal, so that the strength of the second touch signal transmitted by each second channel is the same or approximately the same, and the second touch signal can be improved. In this way, the touch uniformity of the touch sensing layer 2 can be improved, and the touch accuracy can be improved. In addition, the touch auxiliary part is used to compensate the resistance of the touch lead, which can avoid the problem of widening the frame of the display device 1000 when the resistance is compensated by increasing the length of the touch lead.

[0272] Example 3

[0273] The embodiment of the present application further provides a touch sensing layer 2, which includes a touch area S and a wiring area Q located outside the touch area S. The touch sensing layer 2 includes a plurality of first touch electrode blocks 21, a plurality of second touch electrode blocks 22, a plurality of first touch leads 21', a plurality of second touch leads 22', a first signal shielding line 23, a second signal shielding line 24, a touch IC, and an FPC.

[0274] Among them, multiple first touch electrode blocks 21 and multiple second touch electrode blocks 22 are located in the touch area S of the touch sensing layer 2, and multiple first touch leads 21′, multiple second touch leads 22′, first signal shielding lines 23, second signal shielding lines 24, touch IC and FPC are located in the routing area Q of the touch sensing layer 2.

[0275] Regarding the FPC and the touch IC, the FPC and the touch IC in this example are the same as those in Example 1. Please refer to the relevant description in Example 1 and will not be repeated here.

[0276] like Fig.15 As shown, the plurality of first touch electrode blocks 21 and the plurality of second touch electrode blocks 22 are staggered with each other in the first direction Y and the second direction X and are arranged in the same layer, and the first direction Y intersects with the second direction X.

[0277] The plurality of first touch electrode blocks 21 are divided into a plurality of rows along the second direction X. The plurality of first touch electrode blocks 21 in the same row are coupled to each other, and the first touch electrode blocks in adjacent rows in the plurality of rows of first touch electrode blocks are insulated from each other. The plurality of first touch electrode blocks 21 in each row are sequentially arranged along the first direction Y, and the first touch electrode blocks in each row can be used as a first channel, for example, and the first channel is used to transmit the first touch signal.

[0278] The plurality of second touch electrode blocks 22 are divided into a plurality of rows along the first direction Y, the plurality of second touch electrode blocks 22 in the same row are coupled to each other, and the second touch electrode blocks 22 in adjacent rows in the plurality of rows of second touch electrode blocks 22 are insulated from each other. The plurality of second touch electrode blocks 22 in each row are sequentially arranged along the second direction X, and the second touch electrode blocks in each row can be used as a second channel, for example, and the second channel is used to transmit the second touch signal.

[0279] The first touch signal and the second touch signal are trigger signals and receiving signals for each other. The first touch electrode block 21 and the second touch electrode block 22 are trigger electrode blocks Tx and receiving electrode blocks Rx for each other.

[0280] Regarding the structures of the first touch electrode block 21 and the second touch electrode block 22 , reference may be made to the related description in Example 1, which will not be repeated here.

[0281] Regarding the first touch lead 21 ′, in some embodiments provided in the present application, for example Fig.15 As shown, the first touch lead 21' extends from the left side to the bottom side of the touch area S, one end of the first touch lead 21' is coupled to a row of second touch electrode blocks 22, and the other end is coupled to the touch IC. The first touch lead 21' is used to transmit the second touch signal.

[0282] Regarding the second touch lead 22 ′, in some embodiments provided in the present application, for example Fig.15 As shown, the second touch lead 22' extends from the upper side of the touch area S to the lower side via the right side, one end of the second touch lead 22' is coupled to a row of first touch electrode blocks 21, and the other end is coupled to the touch IC. The second touch lead 22' is used to transmit the first touch signal.

[0283] For example, Fig.15 As shown, the first signal shielding line 23 is located outside the plurality of first touch leads 21′ and the plurality of second touch leads 22′. One end of the first signal shielding line 23 is coupled to the touch IC, and the other end is floating. The touch IC is used to transmit a shielding signal to the first signal shielding line 23, and the shielding signal can reduce the interference of external noise on the touch signal on the first touch lead 21′ and the touch signal on the second touch lead 22′.

[0284] Regarding the second signal shielding line 24, in some embodiments provided in the present application, such as Fig.15 As shown, the second signal shielding line 24 is located on the left side of the touch area S, and is disposed between the touch area S and the second touch lead 22 ′ closest to the touch area S. The extension direction of the second signal shielding line 24 is parallel to the first direction Y. One end of the second signal shielding line 24 is coupled to the touch IC, and the other end of the second signal shielding line 24 is floating.

[0285] The shielding signal transmitted on the second signal shielding line 24 may be the same as the shielding signal transmitted on the first signal shielding line 23. The shielding signal on the second signal shielding line 24 can prevent the first touch signal on the second touch lead 22' from crosstalking with the second touch signal on the second touch electrode block 21 close to the second touch lead 22'.

[0286] However, the narrow-frame display device 1000 is currently favored by users due to its large screen-to-body ratio and good visualization effect. For the narrow-frame display device 1000, the area of ​​the peripheral area outside the display area of ​​the display device 1000 is relatively small. The wiring area Q of the touch sensing layer 2 is located in the peripheral area of ​​the display device 1000, so the area of ​​the wiring area Q is also relatively small. For example, Fig.15 As shown, a plurality of first touch leads 21′ are located in the routing area Q on the left side of the touch area S, a plurality of second touch leads 22′ are located in the routing area Q on the upper side of the touch area S, and a plurality of second touch leads 22′ are located in the routing area Q on the lower side of the touch area S. Therefore, the distance between the first touch lead 21′ closest to the touch area S and a portion of the first touch electrode block 21 is inevitably small. The distance between the second touch lead 22′ closest to the touch area S and a portion of the second touch electrode block 22 is inevitably small.

[0287] like Fig.15As shown, the first touch lead 21′ located on the left side of the touch area S is very close to the first touch electrode block 21 near the left side of the touch area S. It can be understood that the distance is less than the sum of the radius of the second touch signal field on the first touch lead 21′ and the radius of the first touch signal field on the first touch electrode block 21. There is no shielding wire set between the first touch lead 21′ and the first touch electrode block 21. Therefore, the second touch signal on the first touch lead 21′ located on the left side of the touch area S will interfere with the first touch signal on the first touch electrode block 21 near the left side of the touch area S, resulting in a decrease in the quality of the first touch signal on the first touch electrode block 21. And the smaller the above distance, the greater the interference degree of the second touch signal on the first touch lead 21′ on the first touch signal on the first touch electrode block 21. It can also be understood that increasing the distance can reduce the interference of the second touch signal on the first touch lead 21 ′ on the first touch signal on the first touch electrode block 21 , which is beneficial to improving the quality of the first touch signal on the first touch electrode block 21 .

[0288] When the second touch signal (for example, a trigger signal) slightly interferes with the first touch signal (for example, a received signal), the strength of the first touch signal on the first touch electrode block 21 will change. Then, the capacitance value of the capacitor at the location where the interference occurs will change, and the capacitance value of the capacitor at the location where the touch action occurs will also change, resulting in the inability to accurately determine the touch point by judging the capacitance value on the capacitor. That is, the problem of touch position error reporting. When the second touch signal (for example, a trigger signal) seriously interferes with the first touch signal (for example, a received signal), it may cause the trigger signal and the received signal to couple, and the touch IC actually receives the second touch signal instead of the first touch signal, so the touch function cannot be realized. That is, the problem of touch not being felt.

[0289] like Fig.15 As shown, the second touch lead 22′ located on the upper side of the touch area S is very close to the second touch electrode block 22 near the upper side of the touch area S. It can be understood that the distance is less than the sum of the radius of the first touch signal field on the second touch lead 22′ and the radius of the second touch signal field on the second touch electrode block 22. There is no shielding signal line between the second touch lead 22′ located on the upper side of the touch area S and the second touch electrode block 22 near the upper side of the touch area S. Therefore, the first touch signal on the second touch lead 22′ will interfere with the second touch signal on the second touch electrode block 22 near the second touch lead 22′, resulting in reduced quality of the second touch signal on the second touch electrode block 22.

[0290] Similarly, the first touch signal on the second touch lead 22 ′ located at the lower side of the touch area S will also interfere with the second touch signal on the second touch electrode block 22 near the second touch lead 22 ′, resulting in reduced quality of the second touch signal on the second touch electrode block 22 .

[0291] Then, when the first touch signal (for example, a receiving signal) slightly interferes with the second touch signal (for example, a trigger signal), the strength of the second touch signal on the second touch electrode block 22 will change. Then, the capacitance value of the capacitor at the location where the interference occurs will change, and the capacitance value of the capacitor at the location where the touch action occurs will also change, resulting in the inability to accurately determine the touch point by judging the capacitance value on the capacitor. That is, the problem of touch position error reporting. When the first touch signal (for example, a receiving signal) seriously interferes with the second touch signal (for example, a trigger signal), the trigger signal and the receiving signal at the location where the interference occurs may be coupled, and the touch function cannot be realized. That is, the problem of touch not being felt.

[0292] Example 4

[0293] In order to solve the signal interference problem in Example 3, the present application embodiment further provides a touch sensing layer 2. Fig.16A As shown, the touch sensing layer 2 includes a touch area S and a wiring area Q located outside the touch area S.

[0294] Regarding the structure of the touch sensing layer 2, the touch sensing layer 2 includes a first touch auxiliary portion 210, a plurality of first touch electrode blocks 21, a plurality of second touch electrode blocks 22, a plurality of first touch leads 21', a plurality of second touch leads 22', a first signal shielding line 23, a touch IC and an FPC.

[0295] The FPC, the touch IC and the first signal shielding line 23 provided in this example may be the same as those in Example 1, and reference may be made to the relevant description in Example 1, which will not be repeated here.

[0296] In this example, the structures of the first touch electrode block 21 and the second touch electrode block 22 may be the same as those in Example 3, and reference may be made to the relevant description in Example 3, which will not be repeated here.

[0297] For ease of description, the present application embodiment takes the touch area S as a rectangle as an example for description. Based on this, the lead area Q is divided into parts located on four sides of the touch area S. For example, the four sides of the touch area S are respectively a first side and a second side opposite to each other, and a third side and a fourth side intersecting the first side and the second side and arranged opposite to each other.

[0298] like Fig.16A As shown, the touch sensing layer 2 includes at least one first touch auxiliary portion 210. Fig.16AIn the figure, a plurality of first touch auxiliary parts 210 are taken as an example for illustration.

[0299] In a group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area S, at least some of the first touch electrode blocks 21 are provided with a first touch auxiliary portion 210 on the side facing the wiring area Q. The first touch auxiliary portion 210 is used to improve the touch signal in the touch sensing layer 2.

[0300] It can be understood that, taking the touch area S as a rectangle as an example, the first touch electrode blocks 21 are arranged in an array in the touch area S. A group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area S can be a group of first touch electrode blocks facing the left side in the outermost circle of the touch area S ( Fig.16A As shown in FIG. 1 ). A group of first touch electrode blocks at the outermost periphery and close to the same side of the touch area S may also be a group of first touch electrode blocks facing right in the outermost circle. A group of first touch electrode blocks at the outermost periphery and close to the same side of the touch area S may also be a group of first touch electrode blocks facing upward in the outermost circle. A group of first touch electrode blocks at the outermost periphery and close to the same side of the touch area S may also be a group of first touch electrode blocks facing downward in the outermost circle.

[0301] Wherein, no matter which side of a group of first touch electrode blocks is close to the touch area S, the first touch auxiliary portion 210 is disposed next to the group, and several first touch electrode blocks 21 in the group are coupled to each other in a row and coupled to the same first touch signal line 21 ′.

[0302] In some embodiments, Fig.16A As shown, a first touch-control lead 21 ′ is coupled to a row of second electrode blocks, and a second touch-control lead 22 ′ is coupled to a row of first touch-control electrode blocks.

[0303] The first touch auxiliary portion 210 is arranged on the side of the first touch electrode block 21 facing the routing area Q near the end of the first touch lead 21′. The first touch auxiliary portion 210 and the first touch electrode block 21 are insulated from each other. The first touch auxiliary portion 210 is used to reduce the interference of the second touch signal on the first touch lead 21′ on the first touch signal on the first touch electrode block 21 to improve the touch signal of the touch sensing layer 2.

[0304] That is to say, Fig.16A As shown, in this example, the first touch lead 21′ is coupled to the second electrode block 22, and the second touch lead 22′ is coupled to the first touch electrode block 21. The first touch auxiliary portion 210 is disposed on one side of a group of first touch electrodes close to the side where the first touch lead 21′ is located and facing the first touch lead 21′, and the first touch auxiliary portion 210 and the first touch electrode block 21 are insulated from each other.

[0305] Next, the location of the first touch auxiliary portion 210 and the arrangement of the first touch lead 21 ′ and the second touch lead 22 ′ are described by way of example.

[0306] In some embodiments, the touch area S is a rectangle.

[0307] In the first possible embodiment provided in the present application, as Fig.16A As shown, the first side and the second side of the touch area S are the long sides of the touch area S, and the third side and the fourth side of the touch area S are the short sides of the touch area S.

[0308] Among them, a row of second touch electrode blocks is coupled only to the first touch line lead 21′ located on the first side of the touch area S. Both ends of a row of first touch electrode blocks are respectively coupled to the second touch leads located on the third side and the fourth side of the touch area S. For the wiring method of 2T1R or 1T2R illustrated in the first possible embodiment of Example 2, reference can be made to the above related description, which will not be repeated here.

[0309] Regarding the configuration of the first touch auxiliary portion 210, in some embodiments provided in this application, for example Fig.16A As shown, all the first touch electrode blocks 21 in a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S are provided with a first touch auxiliary portion 210 on the side facing the wiring area Q.

[0310] In some other embodiments provided in this application, Fig. 16B As shown, a first touch auxiliary portion 210 is provided on a side of a portion of the first touch electrode blocks 21 in a group of first touch electrode blocks located at the outermost periphery and close to the first side of the touch area S and facing the wiring area Q.

[0311] Regarding the structure of the first touch auxiliary portion 210, in some examples of the present application, such as Fig.17A As shown, the first touch auxiliary portion 210 and the first touch electrode block 21 are both metal mesh structures.

[0312] It should be noted that Fig.17A The example in which the first touch electrode block 21 is a receiving electrode block Rx and the second touch electrode block 22 is a trigger electrode block Tx is used for illustration. A dummy element pattern is arranged in the middle of the trigger electrode block Tx to balance the load of the trigger electrode block Tx.

[0313] Among them, Fig.17AAs shown, by processing the first touch electrode block 21, part of the structure originally belonging to the first touch electrode block 21 is used as the first touch auxiliary part 210. The first touch auxiliary part 210 and the first touch electrode block 21 can be arranged in the same layer, formed synchronously, and made of the same material, which can simplify the process steps. In addition, the first touch auxiliary part 210 is a metal grid structure, which can avoid the problem of uneven display in the edge area and the middle area of ​​the display device 1000 when the first touch auxiliary part 210 is a block structure. Therefore, it is beneficial to improve the display effect of the display device 1000.

[0314] In this case, the first touch auxiliary portion 210 is located in the touch area S. As can be seen from the above description, the touch area S overlaps with the display area of ​​the display device 1000, and the wiring area Q is located in the peripheral area of ​​the display device 1000. In this way, it is possible to avoid the problem that when the first touch auxiliary portion 210 is disposed in the wiring area Q outside the touch area S, the wiring area Q is enlarged, and the peripheral area of ​​the display device 1000 is enlarged, resulting in a wider frame of the display device 1000.

[0315] For example, Fig.17A As shown, there is a break between the first touch auxiliary portion 210 and the first touch electrode block 21, that is, the first touch auxiliary portion 210 is insulated from the first touch electrode block 21. The first touch auxiliary portion 210 does not transmit any signal, and does not interfere with the second touch signal on the first touch lead 21′ close to the first touch auxiliary portion 210 and the first touch signal on the first touch electrode block 21 close to the first touch auxiliary portion 210.

[0316] In this way, the setting of the first touch auxiliary part 210 is equivalent to increasing the distance between the first touch lead 21′ and the first touch electrode block 21 near the end of the first touch lead 21′. As can be seen from Example 3, when the distance is too small, less than the sum of the radius of the second touch signal field on the first touch lead 21′ and the first touch signal field on the first touch electrode block 21, the second touch signal on the first touch lead 21′ will interfere with the first touch signal on the first touch electrode block 21, resulting in a decrease in the quality of the first touch signal on the first touch electrode block 21, and ultimately causing the touch screen 100 to have a touch position error or a touch failure. The larger the distance between the first touch lead 21′ and the first touch electrode block 21 near the end of the first touch lead 21′, the more beneficial it is to reduce the above interference and improve the quality of the first touch signal on the first touch electrode block 21.

[0317] Therefore, the setting of the first touch auxiliary part 210 can reduce the interference of the second touch signal on the first touch lead 21′ on the first touch signal on the first touch electrode block 21, thereby improving the quality of the first touch signal on the first touch electrode block 21, playing a role in improving the first touch signal, and ultimately reducing the possibility of touch position error or no touch perception on the touch screen 100.

[0318] In other embodiments of the present application, Fig. 17B As shown, the first touch auxiliary portion 210 is a metal trace.

[0319] Similarly, no signal is transmitted on the metal trace, and no interference is caused to the second touch signal on the first touch lead 21′ near the first touch auxiliary portion 210 and the first touch signal on the first touch electrode block 21 near the first touch auxiliary portion 210. In this way, the provision of the first touch auxiliary portion 210 is equivalent to increasing the distance between the first touch lead 21′ and the first touch electrode block 21 near the end of the first touch lead 21′.

[0320] In some embodiments, the first touch auxiliary portion 210 is coupled to the first signal shielding line 23 .

[0321] For example, the first touch auxiliary portion 210 is coupled to the first signal shielding line 23. For example, a bridge jumper is used to couple the first touch auxiliary portion 210 and the first signal shielding line 23 through a bridge portion.

[0322] In this way, the first touch auxiliary part 210 is directly led out from the first signal shielding line 23, and a shielding signal is transmitted on the first touch auxiliary part 210. The shielding signal is the same as the shielding signal on the first signal shielding line 23. This shielding signal can prevent the second touch signal on the first touch lead 21' from crosstalking with the first touch signal on the first touch electrode block 21 near the end of the first touch lead 21', thereby improving the quality of the first touch signal on the first touch electrode block 21, playing a role in improving the first touch signal, and finally reducing the possibility of the touch screen 100 reporting a touch position error or not being able to feel the touch. In addition, the shielding signal transmitted on the first touch auxiliary part 210 can directly avoid the second touch signal on the first touch lead 21' and the first touch signal on the first touch electrode block 21 from crosstalking, thereby preventing interference between the two signals. This method of improving the first touch signal is equivalent to fundamentally solving the interference of the second touch signal on the first touch signal, so the degree of improvement of the first touch signal is optimal.

[0323] In some embodiments of the present application, at least two of the first touch lead 21 ′, the first touch auxiliary portion 210 , and the first touch electrode block 21 are made of the same layer and the same material.

[0324] It can also be understood that at least two of the first touch lead 21′, the first touch auxiliary portion 210, and the first touch electrode block 21 can be formed simultaneously using a patterning process (for example, including exposure, development, etching, etc.) with the same layer and the same material. In this way, on the one hand, the process steps for preparing the first touch lead 21′, the first touch auxiliary portion 210, and the first touch electrode block 21 can be simplified, and on the other hand, the moiré phenomenon that is easy to occur when the first touch auxiliary portion 210 and the first touch electrode block 21 are in different layers can be avoided, that is, various stripes appear on the display screen of the display device 1000, thereby helping to improve the display effect of the display device 1000.

[0325] In some embodiments, Fig.18 As shown, the touch sensing layer 2 further includes at least one second touch auxiliary portion 220. Fig.18 In the figure, the touch sensing layer 2 includes a plurality of second touch auxiliary portions 220 as an example for illustration.

[0326] The second touch auxiliary portion 220 is arranged on a side of at least part of the second touch electrode blocks 22 in a row of second touch electrode blocks 22 near the end of the second touch lead 22′, facing the routing area Q. The second touch auxiliary portion 220 and the second touch electrode blocks 22 are insulated from each other. The second touch auxiliary portion 220 improves the second touch signal of the touch sensing layer 2 by reducing the interference of the first touch signal on the second touch lead 22′ on the second touch signal on the second touch electrode block 22.

[0327] Likewise, the configuration of the second touch auxiliary portion 220 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0328] In some embodiments, a second touch auxiliary portion 220 is disposed on a side facing the routing area Q of all the second touch electrode blocks 22 in a row of second touch electrode blocks 22 close to a group of second touch leads 22 ′.

[0329] In some other embodiments, a second touch auxiliary portion 220 is disposed on a side of some second touch electrode blocks 22 in a row of second touch electrode blocks 22 close to a group of second touch leads 22 ′ and facing the routing area Q.

[0330] The structure of the second touch auxiliary portion 220 may be a metal mesh or a metal wire.

[0331] Among them, when the structure of the second touch auxiliary part 220 is a metal grid, the second touch electrode block 22 can be processed to use part of the structure originally belonging to the second touch electrode block 22 as the second touch auxiliary part 220. The second touch auxiliary part 220 and the second touch electrode block 22 can be arranged in the same layer, formed synchronously, and made of the same material, which can simplify the process steps. In addition, the second touch auxiliary part 220 is a metal grid structure, which can avoid the problem of uneven display in the edge area and the middle area of ​​the display device 1000 when the second touch auxiliary part 220 is a block structure. Therefore, it is beneficial to improve the display effect of the display device 1000.

[0332] In this case, the second touch auxiliary portion 220 is located in the touch area S. As can be seen from the above description, the touch area S overlaps with the display area of ​​the display device 1000, and the wiring area Q is located in the peripheral area of ​​the display device 1000. In this way, it is possible to avoid the problem that when the second touch auxiliary portion 220 is disposed in the wiring area Q outside the touch area S, the wiring area Q is enlarged, and the peripheral area of ​​the display device 1000 is enlarged, resulting in a wider frame of the display device 1000.

[0333] Similarly, there is a break between the second touch auxiliary portion 220 and the second touch electrode block 22, that is, the second touch auxiliary portion 220 is insulated from the second touch electrode block 22. The second touch auxiliary portion 220 does not transmit any signal, and does not interfere with the first touch signal on the second touch lead 22' near the second touch auxiliary portion 220 and the second touch signal on the second touch electrode block 22 near the second touch auxiliary portion 220.

[0334] In this way, the setting of the second touch auxiliary part 220 is equivalent to increasing the distance between the second touch lead 22′ and the second touch electrode block 22 near the end of the second touch lead 22′. As can be seen from Example 3, when the distance is too small, less than the sum of the radius of the first touch signal field on the second touch lead 22′ and the second touch signal field on the second touch electrode block 22, the first touch signal on the second touch lead 22′ will interfere with the second touch signal on the second touch electrode block 22, resulting in a decrease in the quality of the second touch signal on the second touch electrode block 22, and ultimately causing the touch screen 100 to have a touch position error or a touch failure. The larger the distance between the second touch lead 22′ and the second touch electrode block 22 near the end of the second touch lead 22′, the more beneficial it is to reduce the above interference and improve the quality of the second touch signal on the second touch electrode block 22.

[0335] Therefore, the setting of the second touch auxiliary part 220 can reduce the interference of the first touch signal on the second touch lead 22′ to the second touch signal on the second touch electrode block 22, thereby improving the quality of the second touch signal on the second touch electrode block 22, thereby improving the second touch signal, and ultimately reducing the possibility of touch position error or no touch perception on the touch screen 100.

[0336] When the structure of the second touch auxiliary portion 220 is a metal wire, the second touch auxiliary portion 220 is located in the wiring area Q.

[0337] In some embodiments, no signal is transmitted on the metal trace, and no interference is caused to the first touch signal on the second touch lead 22′ near the second touch auxiliary part 220 and the second touch signal on the second touch electrode block 22 near the second touch auxiliary part 220. In this way, the provision of the second touch auxiliary part 220 is equivalent to increasing the distance between the second touch lead 22′ and the second touch electrode block 22 near the end of the second touch lead 22′. The increase in this distance is beneficial to reducing the interference of the first touch signal on the second touch lead 22′ on the second touch signal on the second touch electrode block 22, thereby improving the second touch signal of the touch sensing layer 2.

[0338] In some other embodiments, the second touch auxiliary portion 220 is coupled to the first signal shielding line 23. For example, a bridge jumper is used to couple the second touch auxiliary portion 220 and the first signal shielding line 23 through a bridge portion.

[0339] In this way, the second touch auxiliary part 220 is directly led out from the first signal shielding line 23, and a shielding signal is transmitted on the second touch auxiliary part 220. The shielding signal is the same as the shielding signal on the first signal shielding line 23. This shielding signal can prevent the first touch signal on the second touch lead 22' and the second touch signal on the second touch electrode block 22 near the end of the second touch lead 22' from crosstalking, thereby improving the quality of the second touch signal on the second touch electrode block 22, playing a role in improving the second touch signal, and ultimately reducing the possibility of the touch screen 100 reporting a touch position error or not being able to feel the touch. In addition, the shielding signal transmitted on the second touch auxiliary part 220 can directly avoid the first touch signal on the second touch lead 22' and the second touch signal on the second touch electrode block 22 from crosstalking, thereby preventing interference between the two signals. This method of improving the second touch signal is equivalent to fundamentally solving the interference of the first touch signal on the second touch signal, so the degree of improvement of the second touch signal is optimal.

[0340] In some embodiments, the first touch auxiliary portion 210 and the second touch auxiliary portion 220 are disposed in the same layer and formed simultaneously, so that the process steps of preparing the first touch auxiliary portion 210 and the second touch auxiliary portion 220 can be simplified.

[0341] In the second possible embodiment provided in the present application, as Fig.19 As shown, the first side and the second side of the touch area S are the long sides of the touch area S, and the third side and the fourth side of the touch area S are the short sides of the touch area S.

[0342] The two ends of a row of second touch electrode blocks are respectively coupled to the first touch line leads 21′ located at the first side and the second side of the touch area S. The two ends of a row of first touch electrode blocks are respectively coupled to the second touch leads located at the third side and the fourth side of the touch area S. The 2T2R wiring method illustrated in the second possible embodiment in Example 2 can be referred to the above related description, which will not be repeated here.

[0343] Likewise, the configuration of the first touch auxiliary portion 210 may be the same as that illustrated in the first possible embodiment in Example 2.

[0344] In some embodiments, Fig.19 As shown, the touch sensing layer 2 further includes a second touch auxiliary portion 220 .

[0345] Likewise, the configuration of the second touch auxiliary portion 220 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0346] In some embodiments, Fig.19 As shown, the touch sensing layer 2 further includes a third touch auxiliary portion 230. The third touch auxiliary portion 230 is arranged in the same manner as the second touch auxiliary portion 220 located on the right side of the touch area S in the second possible embodiment of Example 2.

[0347] The structures of the first touch auxiliary part 210, the second touch auxiliary part 220 and the third touch auxiliary part 230 can be the same as the structure of the first touch auxiliary part 210 in the first possible embodiment of this example, and reference can be made to the above related description. That is, the first touch auxiliary part 210 can be a metal mesh structure or a metal wiring.

[0348] When the first touch auxiliary portion 210 is a metal mesh structure, the first touch auxiliary portion 210 is located in the touch area S, and the first touch auxiliary portion 210 is insulated from the first touch electrode block 21. The provision of the first touch auxiliary portion 210 is equivalent to increasing the distance between the first touch lead 21' and the first touch electrode block 21 near the end of the first touch lead 21', thereby reducing the interference of the second touch signal on the first touch lead 21' on the first touch signal on the first touch electrode block 21.

[0349] When the first touch auxiliary portion 210 is a metal wiring, the first touch auxiliary portion 210 is located in the wiring area Q.

[0350] In some embodiments, no signal is transmitted on the metal routing, and the setting of the first touch auxiliary portion 210 is equivalent to increasing the distance between the first touch lead 21′ and the first touch electrode block 21 near the end of the first touch lead 21′, thereby reducing the interference of the second touch signal on the first touch lead 21′ with the first touch signal on the first touch electrode block 21.

[0351] In some other embodiments, the first touch auxiliary portion 210 is coupled to the first signal shielding line 23. The first touch auxiliary portion 210 transmits a shielding signal that is the same as the first signal shielding line 23. The shielding signal can prevent the second touch signal on the first touch lead 21' from crosstalking with the first touch signal on the first touch electrode block 21 near the end of the first touch lead 21'. In the third possible embodiment provided in the present application, as Fig. 20 As shown, the first side and the second side of the touch area S are short sides of the touch area S, and the third side and the fourth side of the touch area S are long sides of the touch area S.

[0352] Among them, a row of second touch electrode blocks is coupled only to the first touch line lead 21′ located on the first side of the touch area S. Both ends of a row of first touch electrode blocks are respectively coupled to the second touch leads located on the third side and the fourth side of the touch area S. For the wiring method of 2T1R or 1T2R illustrated in the third possible embodiment of Example 2, reference can be made to the above related description, which will not be repeated here.

[0353] Likewise, the configuration of the first touch auxiliary portion 210 may be the same as that illustrated in the first possible embodiment in Example 2.

[0354] In some embodiments, Fig. 20 As shown, the touch sensing layer 2 further includes a second touch auxiliary portion 220 .

[0355] Likewise, the configuration of the second touch auxiliary portion 220 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0356] The structures of the first touch auxiliary portion 210 and the second touch auxiliary portion 220 may be the same as the structure of the first touch auxiliary portion 210 in the first possible embodiment of this example, and reference may be made to the above-mentioned related description, which will not be repeated here.

[0357] In some embodiments, the touch area S is a square.

[0358] In the first possible embodiment provided in the present application, as Fig.21 As shown, the first side and the second side of the touch area S are arranged opposite to each other, and the third side and the fourth side of the touch area S are arranged opposite to each other. The FPC and the touch IC are arranged on the third side of the touch area S.

[0359] Among them, a row of second touch electrode blocks is coupled only to the first touch line lead 21' located on the first side of the touch area S. A row of first touch electrode blocks is coupled only to the second touch line lead 22' located on the fourth side of the touch area S. That is, in Example 2, when the touch area S is a square, the 1T1R wiring method illustrated in the first possible embodiment can refer to the above related description, which will not be repeated here.

[0360] Likewise, the configuration of the first touch auxiliary portion 210 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0361] In some embodiments, at least two of the first touch lead 21 ′, the first touch auxiliary portion 210 , and the first touch electrode block 21 are made of the same layer and the same material.

[0362] In this way, on the one hand, the process steps for preparing the first touch lead 21′, the first touch auxiliary part 210 and the first touch electrode block 21 can be simplified, and on the other hand, the moiré phenomenon that is easy to occur when the first touch auxiliary part 210 and the first touch electrode block 21 are in different layers can be avoided, that is, various stripes appear on the display screen of the display device 1000, which is beneficial to improve the display effect of the display device 1000.

[0363] The structure of the first touch auxiliary portion 210 is the same as that of the first touch auxiliary portion 210 in the first possible embodiment when the touch area S is a rectangle in this example, and reference may be made to the above related description, which will not be repeated here.

[0364] The setting position of the first touch auxiliary portion 210 is the same as the setting position of the first touch auxiliary portion 210 in the first possible embodiment when the touch area S is a rectangle in this example.

[0365] In some embodiments, Fig.21 As shown, the touch sensing layer 2 further includes a second touch auxiliary portion 220 .

[0366] Likewise, the configuration of the second touch auxiliary portion 220 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0367] The structure of the second touch auxiliary portion 220 and the setting position of the second touch auxiliary portion 220 may be the same as that of the first touch auxiliary portion 210 and the setting position of the first touch auxiliary portion 210 in the first possible embodiment when the touch area S is a rectangle in this example. Please refer to the above related description and will not be repeated here.

[0368] In the second possible embodiment provided in the present application, as Fig. 22 As shown, the first side and the second side of the touch area S are arranged opposite to each other, and the third side and the fourth side of the touch area S are arranged opposite to each other. The FPC and the touch IC are arranged on the third side of the touch area S.

[0369] Among them, a row of second touch electrode blocks is coupled only to the first touch line lead 21' located on the first side of the touch area S. A row of first touch electrode blocks is coupled only to the second touch line lead 22' located on the third side of the touch area S. That is, in Example 2, when the touch area S is a square, the 1T1R wiring method illustrated in the second possible embodiment can refer to the above related description, which will not be repeated here.

[0370] Similarly, the first touch auxiliary part 210 can be arranged in the same manner as that shown in the first possible embodiment in Example 2. The arrangement position of the first touch auxiliary part 210 is the same as that of the first possible embodiment when the touch area S is a rectangle in this example.

[0371] In some embodiments, Fig. 22 As shown, the touch sensing layer 2 further includes a second touch auxiliary portion 220 .

[0372] Likewise, the configuration of the second touch auxiliary portion 220 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0373] The structure of the second touch auxiliary portion 220 and the setting position of the second touch auxiliary portion 220 may be the same as that of the first touch auxiliary portion 210 and the setting position of the first touch auxiliary portion 210 in the first possible embodiment when the touch area S is a rectangle in this example. Please refer to the above related description and will not be repeated here.

[0374] In the third possible embodiment provided in the present application, as Fig.23As shown, the first side and the second side of the touch area S are arranged opposite to each other, and the third side and the fourth side of the touch area S are arranged opposite to each other. The FPC and the touch IC are arranged on the third side of the touch area S.

[0375] The two ends of a row of second touch electrode blocks are respectively coupled with different first touch line leads 21'. The two ends of a row of first touch electrode blocks are respectively coupled with different second touch line leads 22'. That is, in Example 2, when the touch area S is a square, the 2T2R wiring method illustrated in the third possible embodiment can refer to the above related description, which will not be repeated here.

[0376] Likewise, the configuration of the first touch auxiliary portion 210 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0377] The setting position of the first touch auxiliary portion 210 is the same as the setting position of the first touch auxiliary portion 210 in the first possible embodiment when the touch area S is a rectangle in this example.

[0378] In some embodiments, Fig.23 As shown, the touch sensing layer 2 further includes a second touch auxiliary portion 220 .

[0379] Likewise, the configuration of the second touch auxiliary portion 220 may also be the same as the configuration illustrated in the first possible embodiment in Example 2.

[0380] The structure of the second touch auxiliary portion 220 and the setting position of the second touch auxiliary portion 220 may be the same as that of the first touch auxiliary portion 210 and the setting position of the first touch auxiliary portion 210 in the first possible embodiment when the touch area S is a rectangle in this example. Please refer to the above related description and will not be repeated here.

[0381] In summary, the provision of the first touch auxiliary portion 210 is equivalent to increasing the distance between the first touch lead 21′ and the first touch electrode block 21 near the end of the first touch lead 21′. The increase in this distance is beneficial to reducing the interference of the second touch signal on the first touch lead 21′ with the first touch signal on the first touch electrode block 21. In this way, the provision of the first touch auxiliary portion 210 is beneficial to improving the quality of the first touch signal on the first touch electrode block 21, thereby improving the first touch signal of the touch sensing layer 2, and ultimately reducing the possibility of the touch screen 100 reporting a touch position error or not being able to sense the touch. The provision of the second touch auxiliary portion 220 is equivalent to increasing the distance between the second touch lead 22′ and the second touch electrode block 22 near the end of the second touch lead 22′. The increase in this distance is beneficial to reducing the interference of the first touch signal on the second touch lead 22′ with the second touch signal on the second touch electrode block 22. Thus, the second touch auxiliary part 220 is helpful to improve the quality of the second touch signal on the second touch electrode block 22, thereby improving the second touch signal of the touch sensing layer 2, and finally reducing the possibility of the touch screen 100 reporting a touch position error or failing to sense touch.

[0382] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A touch sensing layer, comprising: a touch area configured to overlap the display; and A wiring area is located outside the touch area and is configured to be located in the peripheral area; and A plurality of first touch electrode blocks, located in the touch area; and A plurality of second touch electrode blocks are located in the touch area, the plurality of second touch electrode blocks and the plurality of first touch electrode blocks are staggered with each other in a first direction and a second direction and are arranged in the same layer, and the first direction intersects with the second direction; and At least one first touch auxiliary part, wherein, in a group of first touch electrode blocks located at the outermost periphery and close to the same side of the touch area, at least some of the first touch electrode blocks are provided with the first touch auxiliary part on the side facing the wiring area, and the first touch auxiliary part is used to improve the touch signal in the touch sensing layer; the first touch auxiliary part is located in the touch area; the first touch auxiliary part and the first touch electrode block are in the same layer and material, and both are metal mesh structures; A plurality of first touch leads, located in the routing area; wherein the first touch lead is coupled to the first touch electrode block through the first touch auxiliary portion, the area of ​​the first touch auxiliary portion is determined according to the compensation resistance of the coupled first touch electrode block, and the metal mesh structure of the first touch auxiliary portion is a single-route signal conduction structure; or, The first touch auxiliary portion is insulated from the first touch electrode block, and the first touch electrode block is not coupled to the first touch lead.

2. The touch sensing layer according to claim 1, wherein: An end of the first touch lead located at a first side of the touch area is a first end; The first touch auxiliary portion is disposed between the first touch electrode block and the first end of the first touch lead; The first touch auxiliary portion is respectively coupled to the first touch electrode block adjacent thereto and the first end of the first touch lead.

3. The touch sensing layer according to claim 2, wherein: The first touch lead extends along a third direction at a first side of the touch area; The first touch electrode block close to the first side of the touch area and farthest from the third direction has no first touch auxiliary portion disposed on a side facing the wiring area and is directly coupled to the first touch lead.

4. The touch sensing layer according to claim 3, wherein: Along the third direction, the resistance of the first touch auxiliary portion gradually increases.

5. The touch sensing layer according to claim 1, wherein: The touch sensing layer also includes: A plurality of second touch leads are located in the routing area, and at least one end of the second touch electrode blocks located in the same row is coupled to the second touch lead.

6. The touch sensing layer according to claim 5, wherein: The touch sensing layer also includes: At least one second touch auxiliary portion, wherein the second touch auxiliary portion is disposed between the second touch electrode block and the second touch lead, and the second touch auxiliary portion is coupled to the second touch electrode block and the second touch lead respectively.

7. The touch sensing layer according to claim 1, wherein: A first end of the first touch lead located at a first side of the touch area is coupled to the second touch electrode block; The first touch auxiliary portion is disposed on a side of a group of the first touch electrode blocks close to the first end facing the wiring area; The first touch auxiliary portion and the first touch electrode block are insulated from each other.

8. The touch sensing layer according to claim 7, wherein: The touch sensing layer also includes: A first signal shielding line is located at the periphery of the plurality of first touch control leads; and the first touch control auxiliary portion is coupled to the first signal shielding line.

9. The touch sensing layer according to claim 7, wherein: The touch sensing layer also includes: A plurality of second touch leads are located in the routing area, and at least one end of the first touch electrode blocks located in the same row is coupled to the second touch lead.

10. The touch sensing layer according to claim 9, wherein: The touch sensing layer also includes: At least one second touch auxiliary portion is provided on a side of at least some of the second touch electrode blocks in a row of the second touch electrode blocks close to the end of the second touch lead and facing the routing area.

11. The touch sensing layer according to claim 9 or 10, wherein: The touch sensing layer also includes: at least one third touch auxiliary portion, wherein at least part of the second touch electrode blocks in a group of the second touch electrode blocks close to the second side of the touch area and facing the wiring area are provided with the third touch auxiliary portion; The second side of the touch area is opposite to the first side of the touch area.

12. The touch sensing layer according to claim 1, wherein: The first touch lead, the first touch auxiliary portion and the first touch electrode block are in the same layer and made of the same material.

13. The touch sensing layer according to any one of claims 2 to 7, wherein: The first touch lead extends from the first side of the touch area to the third side of the touch area, and the first side of the touch area intersects with the third side of the touch area.

14. A touch screen, comprising: Display panel, and The touch sensing layer according to any one of claims 1 to 13, wherein the touch sensing layer is arranged on a light emitting side surface of the display panel.

15. The touch screen according to claim 14, wherein: The display panel is an organic light emitting diode display panel; The display panel comprises a packaging layer, and the first touch electrode block and the second electrode block of the touch sensing layer are arranged on the surface of the packaging layer.

16. A display device, comprising: housing, and The touch screen according to claim 14 or 15, wherein the touch screen is arranged in the housing.

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