Touch panel and touch device

Abstract

The invention provides a touch panel and a touch device, the touch panel comprises a touch area, a frame area and a binding area, the frame area is located at two sides of the touch area along a first direction, the binding area is located at one side of the touch area along a second direction, and the first direction intersects with the second direction. The touch panel comprises multiple rows of first touch electrodes and multiple first touch leads, the multiple rows of first touch electrodes are located in the touch area and arranged in the second direction, the multiple first touch leads are located in the frame area and extend to the binding area, and the multiple first touch leads are electrically connected with the multiple first touch electrodes in a one-to-one correspondence mode. Wherein in the second direction, the resistance values of the multiple first touch leads connected with the multiple rows of first touch electrodes are sequentially decreased in the direction close to the binding area. Therefore, impedance matching does not need to be carried out on the first touch leads, winding of the first touch leads is not needed, the size of the frame area can be reduced, and the frame is reduced.

Description

Technical Field

[0001] This application relates to the field of touch technology, and particularly to a touch control. Background Art

[0002] Capacitive touch screens are widely used in various electronic interaction scenario devices due to their high durability, long lifespan, and support for multi-touch functions. As "full-screen" mobile phones are increasingly favored by consumer customers, the requirement for the screen-to-body ratio of the entire mobile phone touch display module is also getting higher and higher, demanding that the borders of its touch screen and display screen become narrower and narrower.

[0003] The touch screen needs to connect the touch electrodes in the touch area and the chips in the bonding area through leads in the border area. Usually, the peripheral leads are impedance-matched through wire winding, which will increase the size of the border.

[0004] Therefore, how to reduce the border size on both the left and right sides of the touch screen is an urgent problem to be solved currently. Summary of the Invention

[0005] The purpose of this application is to provide a touch panel and a touch device, aiming to reduce the size of the border area.

[0006] This application provides a touch panel, including a touch area, a border area, and a bonding area. The border area is located on both sides of the touch area along a first direction, and the bonding area is located on one side of the touch area along a second direction, where the first direction intersects with the second direction. The touch panel includes: multiple rows of first touch electrodes located in the touch area and arranged along the second direction; multiple first touch leads located in the border area and extending to the bonding area, and the multiple first touch leads are electrically connected to the multiple first touch electrodes one by one; wherein, along the direction approaching the bonding area in the second direction, the resistance values of the multiple first touch leads respectively connected to the multiple rows of the first touch electrodes decrease in sequence.

[0007] In some embodiments, the difference in resistance values between two first touch leads connected to any two adjacent rows of the first touch electrodes is less than or equal to 50Ω.

[0008] In some embodiments, the difference in resistance values between two first touch leads connected to any two adjacent rows of the first touch electrodes is 20Ω - 50Ω.

[0009] In some embodiments, the difference in resistance values between two first touch leads connected to any two adjacent rows of the first touch electrodes is equal.

[0010] In some embodiments, the first touch lead includes a first end and a second end. The first end is connected to the first touch electrode, and the second end is located in the bonding area. From the first end along the first touch lead to the second end, the distance from each position on the first touch lead to the bonding area in the second direction remains unchanged or decreases.

[0011] In some embodiments, the multiple rows of first touch electrodes include a first electrode and a second electrode adjacent to each other in the second direction. The second electrode is located on a side of the first electrode away from the bonding area. The multiple first touch leads include a first lead and a second lead. The first lead is connected to the first electrode, and the second lead is connected to the second electrode. The length of the first lead is less than the length of the second lead.

[0012] In some embodiments, it further includes: multiple columns of second touch electrodes, arranged in the first direction within the touch area, and the second touch electrodes intersect with the first touch electrodes; multiple second touch leads, located between the touch area and the bonding area, and the multiple second touch leads are respectively and correspondingly connected to the multiple columns of second touch electrodes.

[0013] In some embodiments, a capacitance matrix is formed between the multiple columns of second touch electrodes and the multiple rows of first touch electrodes. The capacitance matrix has multiple reference capacitance values. In the second direction along the direction approaching the bonding area, the multiple reference capacitance values decrease in sequence.

[0014] In some embodiments, in the second direction along the direction approaching the bonding area, the capacitance difference percentage between any two adjacent reference capacitance values is less than or equal to 10%.

[0015] An embodiment of the present application further provides a touch device, including: a thin film transistor layer; a light emitting layer, located on the thin film transistor layer and including multiple light emitting sub-pixels; a packaging layer, located on the light emitting layer; the touch panel in any of the above embodiments, and the touch panel is located on the packaging layer.

[0016] The present application provides a touch panel and a touch device. Since in the second direction along the direction approaching the bonding area, the resistance values of the multiple first touch leads respectively connected to the multiple rows of first touch electrodes decrease in sequence, impedance matching does not need to be performed on the multiple first touch leads, and thus wire winding of the first touch leads is not required, so that the size of the border area can be reduced and the border can be narrowed. Description of the Drawings

[0017] The following will, by describing in detail the specific embodiments of the present application in conjunction with the drawings, make the technical solutions and other beneficial effects of the present application obvious.

[0018] Figure 1 is a schematic structural diagram of a touch lead in a touch panel provided by some embodiments of the present application;

[0019] Figure 2 is a schematic structural diagram of a first touch lead in a touch panel provided by some embodiments of the present application;

[0020] Figure 3 is Figure 2 a partial enlarged view of the first touch lead in

[0021] Figure 4 is Figure 1 and Figure 2 a design schematic diagram of the resistance values of multiple touch leads in

[0022] Figure 5 is a schematic structural diagram of a touch display device provided by an embodiment of the present application. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0024] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0025] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0027] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of touch leads in a touch panel provided by some embodiments of the present application.

[0028] The touch panel includes a touch area, a border area, and a bonding area. The border area is located on both sides of the touch area along the first direction X, and the bonding area is located on one side of the touch area along the second direction. The first direction X intersects with the second direction Y. The touch panel includes multiple touch leads located in the border area and touch electrodes located in the touch area. The multiple touch leads include a distal touch lead 1 and a proximal touch lead 2. The distal touch lead 1 is connected to a touch electrode far from the bonding area, and the proximal touch lead 2 is connected to a touch electrode close to the bonding area. And the proximal touch lead 2 is wound to achieve resistance matching with the distal touch lead 1.

[0029] However, this will increase the size of the border area along the first direction X, which is not conducive to realizing a narrow border screen.

[0030] Some embodiments of the present application provide a touch panel. The touch panel includes a touch area, a border area, and a bonding area. The border area is located on both sides of the touch area along the first direction, and the bonding area is located on one side of the touch area along the second direction. The first direction intersects with the second direction. The touch panel includes multiple rows of first touch electrodes and multiple first touch leads. The multiple rows of first touch electrodes are located in the touch area and arranged along the second direction. The multiple first touch leads are located in the border area and extend to the bonding area. The multiple first touch leads are electrically connected to the multiple first touch electrodes one by one. Among them, in the second direction, along the direction close to the bonding area, the resistance values of the multiple first touch leads respectively connected to the multiple rows of the first touch electrodes decrease in sequence.

[0031] Therefore, the embodiments of the present application can avoid impedance matching for the multiple first touch leads, so there is no need to wind the first touch leads, and thus the size of the border area can be reduced and the border can be narrowed.

[0032] The structure of the touch panel provided by some embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0033] Please refer to Figure 2 and Figure 3 , Figure 2 which is a schematic structural diagram of the first touch lead in the touch panel provided by some embodiments of the present application, Figure 3 and Figure 2 is a partial enlarged view of the first touch lead in

[0034] The touch panel 100 includes a touch area 101, a border area 102, and a bonding area 103. The border area 102 is located on both sides of the touch area 101 along the first direction X, and the bonding area 103 is located on one side of the touch area 101 along the second direction Y. The first direction X intersects with the second direction Y. The touch panel 100 includes multiple rows of first touch electrodes 10 and multiple first touch leads 11. The multiple rows of first touch electrodes 10 are located in the touch area 101 and arranged along the second direction Y, and the multiple first touch leads 11 are located in the border area 102 and extend to the bonding area 103. The multiple first touch leads 11 are electrically connected to the multiple first touch electrodes 10 in one-to-one correspondence. Among them, in the second direction Y, along the direction close to the bonding area 103 (i.e., from top to bottom in the figure), the resistance values of the multiple first touch leads 11 respectively connected to the multiple rows of the first touch electrodes 10 decrease in sequence.

[0035] Among them, the resistance value of the first touch lead 11 refers to the total resistance value of each first touch lead 11. Since the width of each first touch lead 11 can be different at different positions, the resistance values at different positions can be unequal.

[0036] The touch panel 100 can be applied to various displays, such as a liquid crystal display (LCD), an organic light-emitting diode display (OLED), and a micro-light-emitting diode display (Micro-LED), etc.

[0037] In some embodiments, the first direction X can be the left-right direction of the touch panel 100 (referring to the direction in the figure), and the second direction Y can be the up-down direction of the touch panel 100 (referring to the direction in the figure), that is, the first direction X can be perpendicular to the second direction Y.

[0038] In some embodiments, multiple rows of the first touch electrodes 10 can be divided into upper and lower parts. The first touch electrodes 10 in the upper part are led out through the first touch leads 11 within the left border, and the first touch electrodes 10 in the lower part are led out through the first touch leads 11 within the right border. Among the first touch electrodes 10 in the upper or lower part, the first touch leads 11 connected to the first touch electrodes 10 that are farther away from the bonding area 103 are also farther away from the touch area 101, while the leads connected to the first touch electrodes 10 that are closer to the bonding area 103 are closer to the touch area 101. In other words, the first touch leads 11 connected to the first touch electrodes 10 at the distal end are located on the outer side, while the first touch leads 11 connected to the first touch electrodes 10 at the proximal end are located on the inner side, where the outer side is farther away from the touch area 101 than the inner side.

[0039] For example, Figure 2 taking the 8 rows of the first touch electrodes 10 as an example, from the first row of the first touch electrodes 10 to the second row of the first touch electrodes 10, the resistance values of the multiple first touch leads 11 corresponding to the multiple first touch electrodes 10 are sequentially decreased.

[0040] In some embodiments, since the number of the first touch leads 11 is smaller as going upward, the width of a part of the first touch lead 11 away from the bonding area 103 can be greater than the width of a part close to the bonding area 103, thereby reducing the total resistance of the first touch leads 11.

[0041] In some embodiments, the first touch electrode 10 can be a driving electrode or a sensing electrode.

[0042] The touch panel 100 may further include multiple columns of second touch electrodes 12 and multiple second touch leads 13. The second touch electrodes 12 are located within the touch area 101 and arranged along the first direction X. One row of the second touch electrodes 12 intersects with one column of the first touch electrodes 10. Multiple second touch leads 13 are located between the touch area 101 and the bonding area 103, and the multiple second touch leads 13 are connected to the multiple columns of the second touch electrodes 12 in one-to-one correspondence.

[0043] When the first touch electrode 10 is a driving electrode, the second touch electrode 12 is a sensing electrode; when the first touch electrode 10 is a sensing electrode, the second touch electrode 12 is a driving electrode. The first touch electrode 10 and the second touch electrode 12 together form a mutual capacitance type touch electrode, thereby realizing the touch function.

[0044] Among them, a plurality of second touch electrodes 12 are pairwise connected into a column through conductive bridges 14, and the conductive bridges 14 are located between two adjacent second touch electrodes 12. The first touch electrode 10 can be arranged on the same layer as the second touch electrode 12, and the conductive bridge 14 can be located on the lower layer of the first touch electrode 10 and the second touch electrode 12.

[0045] As Figure 2 shown, the second touch leads 13 are connected to the bottom of a column of second touch electrodes 12. Since the distances from the bottom of a column of second touch electrodes 12 to the bonding area 103 are all relatively close, the resistance values between multiple second touch leads 13 are not much different and are relatively small.

[0046] In some embodiments, most of the first touch leads 11 can be double-layer routed and connected through vias to reduce the overall resistance of the first touch leads 11.

[0047] Specifically, the first touch lead 11 includes a first sub-touch lead and a second sub-touch lead (not shown), and the second sub-touch lead is located on the lower layer of the first sub-touch lead and is arranged overlapping with the first sub-touch lead. The first sub-touch lead can be arranged on the same layer as the first touch electrode 10 and the second touch electrode 12, and the second sub-touch electrode can be located on the lower layer of the first touch electrode 10 and the second touch electrode 12.

[0048] As Figure 2 and Figure 3 shown, each first touch lead 11 extends from the first touch electrode 10 directly to the bonding area 103 for bonding without winding. Compared with Figure 1 the embodiment, it can reduce Figure 1 the phenomenon that the impedance is too large due to the long winding or too thin line width in

[0049] which affects the yield. Specifically, the first touch lead 11 includes a first end 111 and a second end 112. The first end 111 is connected to the first touch electrode 10, and the second end 112 is located in the bonding area 103. From the first end 111 along the first touch lead 11 to the second end 112, the distances from each position on the first touch lead 11 to the bonding area 103 along the second direction Y are unchanged or reduced. That is to say, the first touch lead 11 has no situation of winding back and forth from the first end 111 to the second end 112.

[0050] As Figure 2As shown, the distance from the first end 111 to the bonding area 103 along the second direction Y is the largest, and the distance from the second end 112 to the bonding area 103 along the second direction Y is the smallest (equal to 0); for the part of the first touch lead 11 between the first end 111 and the second end 112, the distance to the bonding area 103 along the second direction Y remains unchanged first, then decreases, then remains unchanged again, and finally decreases to 0. Since there is no winding back and forth, there is no part where the distance of the first touch lead 11 increases.

[0051] Since the first touch lead 11 does not wind, the lengths of multiple first touch electrodes 10 from the distal end (referring to the end far from the bonding area 103) to the proximal end (referring to the end close to the bonding area 103) decrease in sequence.

[0052] Specifically, the multiple rows of first touch electrodes 10 include a first electrode and a second electrode adjacent to each other along the second direction Y, and the second electrode is located on the side of the first electrode far from the bonding area 103, that is, the second electrode is farther from the bonding area 103 than the first electrode. The multiple first touch leads 11 include a first lead and a second lead, the first lead is connected to the first electrode, the second lead is connected to the second electrode, and the length of the first lead is less than the length of the second lead.

[0053] Therefore, the length difference of the first touch lead 11 is mainly determined by the distance difference between the first touch electrodes 10. However, if the resistance difference caused by the length difference of the first touch lead 11 is too large, it will cause too large a capacitance value difference between the adjacent first touch electrodes 10, thereby affecting the touch accuracy.

[0054] In some embodiments, the difference in resistance values of two first touch leads 11 connected to any adjacent two rows of the first touch electrodes 10 is less than or equal to 50 Ω. This can make the capacitance value difference between the adjacent first touch electrodes 10 relatively small, which is beneficial to improving the touch accuracy.

[0055] As Figure 2 shown, the difference in resistance values of any two adjacent first touch leads 11 within the left frame is less than or equal to 50 Ω, the difference in resistance values of any two adjacent first touch leads 11 within the right frame is less than or equal to 50 Ω, and the difference in resistance values between the innermost first touch lead 11 in the left frame and the outermost first touch lead 11 in the right frame is less than or equal to 50 Ω.

[0056] The touch panel 100 may further include a driving chip 1031 located in the bonding area 103, and the maximum difference in resistance values between adjacent channels in the driving chip 1031 is 160 Ω. Designing the difference in resistance values between two first touch leads 11 connecting any adjacent two rows of the first touch electrodes 10 within 50 Ω can not only avoid too large a difference in resistance values between adjacent first touch electrodes 10, but also reserve a certain process error in the process, ensuring that the difference in resistance values between adjacent channels is within the tolerable range of the driving chip 1031.

[0057] In some embodiments, the difference in resistance values between two first touch leads 11 connecting any adjacent two rows of the first touch electrodes 10 is 20 Ω to 50 Ω.

[0058] Correspondingly, a capacitance matrix is formed between multiple columns of the second touch electrodes 12 and multiple rows of the first touch electrodes 10, and the capacitance matrix has multiple reference capacitance values. Since the reference capacitance values are positively correlated with the resistance values of the first touch leads 11, in the second direction Y along the direction approaching the bonding area 103, the multiple reference capacitance values decrease in sequence. That is to say, the multiple reference capacitance values decrease in sequence from top to bottom (referring to Figure 2 the illustrated direction).

[0059] In some embodiments, in the second direction Y along the direction approaching the bonding area 103, the capacitance difference percentage between any adjacent two reference capacitance values is less than or equal to 10%, which is beneficial to improving touch accuracy.

[0060] In some embodiments, the difference in resistance values between two first touch leads 11 connecting any adjacent two rows of the first touch electrodes 10 is equal, that is, the resistance values of multiple first touch leads 11 decrease equally in value, which is the most ideal state.

[0061] Correspondingly, in the second direction Y along the direction approaching the bonding area 103, the capacitance difference between any adjacent two reference capacitance values is equal, that is, the multiple reference capacitance values decrease equally in value.

[0062] Please refer to Figure 4 , Figure 4 which is Figure 1 and Figure 2 a design schematic diagram of the resistance values of multiple touch leads in

[0063] The ordinate of curve L1 shows Figure 1 the resistance values of multiple touch leads in the Figure 1 structure, and the abscissa of curve L1 from 0 to 40 represents Figure 2The resistance values of multiple first touch leads 11 in the structure, where the abscissa of curve L2 ranges from 0 to 40 represents Figure 2 multiple first touch leads 11 connected to multiple first touch electrodes 10 in multiple rows from top to bottom in

[0064] It can be seen that Figure 1 the proximal touch leads 2 in Figure 2 are wound, so that the resistance values of multiple touch leads are matched, and are basically about 1600 Ω. While Figure 2 the first touch leads 11 in Figure 1 are not wound, and the resistance values of multiple first touch leads 11 decrease in sequence. And Figure 2 the maximum resistance value of the first touch leads 11 in Figure 1 can be equal to Figure 1 the maximum resistance value of the touch leads in

[0065] For example, they are both 1600 Ω. Since in Figure 2 the embodiment, the maximum resistance value of the first touch leads 11 remains unchanged, and the resistance values of multiple first touch leads 11 decrease in sequence, so Figure 2 the overall resistance value of the touch panel 100 in Figure 1 is smaller than the overall resistance value of the touch panel in Figure 2 Therefore, the touch effect of the touch panel 100 in Figure 1 is better than the touch effect of the touch panel in Figure 2 That is to say, the touch panel 100 provided by the embodiment of the present application can improve the touch accuracy while ensuring the improvement of the touch effect.

[0066] In the actual design process, keep the design of the first touch lead 11 at the farthest end unchanged, that is, on the basis of the resistance value of the first touch lead 11 at the farthest end, design the resistance values of other first touch leads 11 in sequence. Specifically, the difference in resistance values between adjacent first touch leads 11 can be ensured to be within the range of 20 Ω to 50 Ω by adjusting the width of other first touch leads 11.

[0067] It should be noted that since Figure 2 in the embodiment, the resistance value of the first touch lead 11 connected to the proximal first touch electrode 10 decreases, the induction amount of the proximal first touch electrode 10 is increased, the sensitivity is improved, and the signal-to-noise ratio is improved.

[0068] In some embodiments, the gain coefficient of the first touch lead 11 connected to the proximal first touch electrode 10 can be reduced, so that the difference in induction amount between multiple first touch leads 11 is reduced.

[0069] In the touch panel 100 provided by the embodiment of the present application, since the resistance values of the plurality of first touch leads 11 respectively connected to the plurality of rows of first touch electrodes 10 decrease successively in the direction close to the bonding area 103 in the second direction Y, impedance matching does not need to be performed on the plurality of first touch leads 11, and thus winding of the first touch leads 11 is not required, so that the size of the border area 102 can be reduced and the border can be narrowed.

[0070] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a touch display device provided by an embodiment of the present application. Among them, the third direction Z represents the stacking direction of the film layers, and the third direction Z can be perpendicular to the first direction X and the second direction Y.

[0071] The touch display device 200 at least includes a thin film transistor layer 20, a light emitting layer 21, a packaging layer 22, and a touch panel 23. The light emitting layer 21 is located on the thin film transistor layer 20 and includes a plurality of light emitting sub-pixels. The packaging layer 22 is located on the light emitting layer 21, and the touch panel 23 is located on the packaging layer 22.

[0072] The touch panel 23 can be the touch panel in any of the above embodiments. The touch panel 23 includes a touch area, a border area, and a bonding area. The border area is located on both sides of the touch area along the first direction, and the bonding area is located on one side of the touch area along the second direction. The first direction intersects with the second direction. The touch panel includes a plurality of rows of first touch electrodes 10 and a plurality of first touch leads. The plurality of rows of first touch electrodes 10 are located in the touch area and arranged along the second direction. The plurality of first touch leads are located in the border area and extend to the bonding area. The plurality of first touch leads are electrically connected to the plurality of first touch electrodes 10 in one-to-one correspondence. Among them, in the second direction, along the direction close to the bonding area, the resistance values of the plurality of first touch leads respectively connected to the plurality of rows of the first touch electrodes 10 decrease successively.

[0073] In some embodiments, the touch panel 23 further includes a second touch electrode 12 and a conductive bridge 14.

[0074] The touch panel 23 includes a first insulating layer 231, a second insulating layer 232, and an organic protection layer 233. Among them, the second insulating layer 232 is located on the first insulating layer 231, and a conductive bridge 14 is formed in the second insulating layer 232 and connects two adjacent second touch electrodes 12. The first touch electrode 10 and the second touch electrode 12 are arranged in the same layer and are located on the second insulating layer 232. The first touch electrode 10 is located in the area between two adjacent second touch electrodes 12 (but not on the connection line of two adjacent second touch electrodes 12). A plurality of second touch electrodes 12 are connected to form a second touch electrode channel, and a plurality of first touch electrodes 10 are connected to form a first touch electrode channel. The first touch electrode channel and the second touch electrode channel are arranged in a cross manner, and the cross position corresponds to the upper part of the conductive bridge 14.

[0075] The thin film transistor layer 20 includes a substrate 201, a buffer layer 202 located on the substrate 201, an active layer 203 located on the buffer layer 202, a first gate insulating layer 204 covering the active layer 203, a first gate 2051 located on the first gate insulating layer 204, a second gate insulating layer 206 covering the first gate 2051, a second gate 2052 located on the second gate insulating layer 206, an interlayer dielectric layer 207 covering the second gate 2052, a source electrode 2081 and a drain electrode 2082 located on the interlayer dielectric layer 207, and a planarization layer 209 located on the interlayer dielectric layer 207 and covering the source electrode 2081 and the drain electrode 2082. The source electrode 2081 and the drain electrode 2082 are connected to both ends of the active layer 203 through vias.

[0076] The light emitting layer 21 includes a pixel defining layer 211 (with a light emitting area), an anode layer 212 located in the light emitting area, a light emitting functional layer 213 located on the anode layer 212, and a cathode layer 214 located on the light emitting functional layer 213 and covering the pixel defining layer 211. Among them, the anode layer 212 is connected to the drain electrode 2082 through a via. The light emitting layer 21 further includes a spacer 215 located on the pixel defining layer 211, and the cathode layer 214 also covers the spacer 215. The light emitting functional layer 213 can emit red, green, and blue light according to different materials, thus forming a plurality of light emitting sub-pixels, such as red sub-pixels, green sub-pixels, and blue sub-pixels.

[0077] The encapsulation layer 22 includes a first inorganic layer 221, an organic layer 222 located on the first inorganic layer 221, and a second inorganic layer 223 located on the organic layer 222.

[0078] The description of the above embodiments is only used to help understand the technical solutions and their core ideas of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A touch panel, characterized in that: It comprises a touch area, a frame area and a binding area, wherein the frame area is located at two sides of the touch area along a first direction, and the binding area is located at one side of the touch area along a second direction, and the first direction intersects with the second direction; The touch panel comprises: A plurality of rows of first touch electrodes are located in the touch area and arranged along the second direction; A plurality of first touch leads, located in the frame area and extending to the binding area, the plurality of first touch leads being electrically connected to the plurality of first touch electrodes in a one-to-one correspondence; Wherein, along a direction close to the binding area in the second direction, resistance values ​​of a plurality of first touch control leads respectively connected to a plurality of rows of the first touch control electrodes decrease in sequence.

2. The touch panel according to claim 1, characterized in that: A difference in resistance values ​​between two first touch control leads connected to any two adjacent rows of the first touch control electrodes is less than or equal to 50Ω.

3. The touch panel according to claim 2, characterized in that: The difference in resistance between two first touch control leads connected to any two adjacent rows of the first touch control electrodes is 20Ω to 50Ω.

4. The touch panel according to claim 3, characterized in that: The difference in resistance values ​​of two first touch control leads connected to any two adjacent rows of the first touch control electrodes is equal.

5. The touch panel according to claim 1, characterized in that: The first touch lead comprises a first end and a second end, the first end is connected to the first touch electrode, and the second end is located in the binding area; From the first end along the first touch lead to the second end, the distance from each position on the first touch lead to the binding area along the second direction remains unchanged or decreases.

6. The touch panel according to claim 1, characterized in that: The plurality of rows of first touch electrodes include first electrodes and second electrodes adjacent to each other along the second direction, and the second electrodes are located on a side of the first electrodes away from the binding area; The plurality of first touch leads include a first lead and a second lead, the first lead is connected to the first electrode, the second lead is connected to the second electrode, and the length of the first lead is shorter than the length of the second lead.

7. The touch panel according to claim 1, characterized in that: Also includes: A plurality of columns of second touch electrodes, located in the touch area and arranged along the first direction, the second touch electrodes intersecting the first touch electrodes; A plurality of second touch control leads are located between the touch control area and the binding area, and the plurality of second touch control leads are connected to a plurality of columns of the second touch control electrodes in a one-to-one correspondence.

8. The touch panel according to claim 7, characterized in that: A capacitance matrix is ​​formed between the multiple columns of the second touch electrodes and the multiple rows of the first touch electrodes. The capacitance matrix has multiple reference capacitance values. In the second direction, along a direction close to the binding area, the multiple reference capacitance values ​​decrease in sequence.

9. The touch panel according to claim 8, characterized in that: In the second direction along a direction close to the binding area, a capacitance difference percentage between any two adjacent reference capacitance values ​​is less than or equal to 10%.

10. A touch device, characterized in that: include: Thin film transistor layer; A light-emitting layer, located on the thin film transistor layer and comprising a plurality of light-emitting sub-pixels; An encapsulation layer, located on the light-emitting layer; The touch panel according to any one of claims 1 to 9, wherein the touch panel is located on the packaging layer.

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