CN111857433B

CN111857433B - Touch control panel and touch control display panel

Info

Publication number: CN111857433B
Application number: CN202010725897.XA
Authority: CN
Inventors: 王宝男; 敦栋梁; 夏志强
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2022-07-15
Anticipated expiration: 2040-07-24
Also published as: CN111857433A

Abstract

The invention provides a touch pad and a touch display panel, wherein the touch pad comprises a plurality of touch electrode blocks and a plurality of touch wires; the touch electrode blocks are arranged in rows and columns along a first direction and a second direction; the plurality of touch electrode blocks comprise a plurality of touch driving electrode blocks and a plurality of touch sensing electrode blocks, a row of touch driving electrode blocks and a row of touch sensing electrode blocks are alternately distributed one by one along a first direction, and a row of touch driving electrode blocks and a row of touch sensing electrode blocks are alternately distributed one by one along a second direction; the plurality of touch-control wires comprise a plurality of touch-control driving wires and a plurality of touch-control sensing wires, at least two adjacent touch-control sensing electrode blocks are electrically connected to the same touch-control sensing wire along a first direction, and a row of touch-control driving electrode blocks are electrically connected to the same touch-control driving wire along a second direction. The invention provides a touch pad and a touch display panel, which are used for reducing the number of touch routing and improving the touch sensitivity.

Description

Touch control panel and touch control display panel

Technical Field

The invention relates to the technical field of display, in particular to a touch control plate and a touch control display panel.

Background

With the development of science and technology, a touch display panel with a touch function is widely applied to various display products such as mobile phones, tablet computers, information query machines in halls of public places and the like as an information input tool. Therefore, the user can operate the electronic equipment by only touching the mark on the touch display panel with fingers, dependence of the user on other input equipment (such as a keyboard, a mouse and the like) is eliminated, and man-machine interaction is simpler.

The touch display panel has a touch function and is a touch pad, and the touch pad has a large number of touch wires and needs to compress touch electrode blocks, so that the touch sensitivity is reduced.

Disclosure of Invention

The invention provides a touch pad and a touch display panel, which are used for reducing the number of touch routing and improving the touch sensitivity.

In a first aspect, an embodiment of the present invention provides a touch panel, including a plurality of touch electrode blocks and a plurality of touch traces;

the touch electrode blocks are arranged in rows and columns along a first direction and a second direction, the touch electrode blocks are arranged in rows along the first direction, the touch electrode blocks are arranged in columns along the second direction, two adjacent rows of the touch electrode blocks are distributed in a staggered mode, and two adjacent columns of the touch electrode blocks are distributed in a staggered mode; the touch control electrode blocks comprise a plurality of touch control driving electrode blocks and a plurality of touch control sensing electrode blocks, a row of touch control driving electrode blocks and a row of touch control sensing electrode blocks are alternately distributed one by one along the first direction, and a line of touch control driving electrode blocks and a line of touch control sensing electrode blocks are alternately distributed one by one along the second direction;

the plurality of touch-control wires comprise a plurality of touch-control driving wires and a plurality of touch-control sensing wires, at least two adjacent touch-control sensing electrode blocks are electrically connected to the same touch-control sensing wire along the first direction, and a row of touch-control driving electrode blocks are electrically connected to the same touch-control driving wire along the second direction.

In a second aspect, an embodiment of the present invention provides a touch display panel, including the touch pad of the first aspect.

In the embodiment of the invention, a row of touch driving electrode blocks arranged along the second direction is electrically connected to the same touch driving trace, that is, all touch driving electrode blocks in the same row share the same touch driving trace. At least two touch-control sensing electrode blocks arranged along the first direction are electrically connected to the same touch-control sensing wiring, that is, the at least two touch-control sensing electrode blocks share the same touch-control sensing wiring, so that the number of touch-control driving wirings and touch-control sensing wirings is reduced, that is, the number of touch-control wirings is reduced, more space is reserved for the touch-control electrode blocks, and the touch-control sensitivity is improved. Due to the fact that the number of touch wiring is reduced, wiring space is saved, the frame can be reduced, and narrow frame design of the touch display panel using the touch pad is achieved.

Drawings

Fig. 1 is a schematic structural diagram of a touch panel according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another touch pad according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another touch pad according to an embodiment of the invention;

fig. 4 is a schematic structural diagram of another touch pad according to an embodiment of the invention;

FIG. 5 is a schematic structural diagram of another touch pad provided in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another touch pad according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another touch pad according to an embodiment of the invention;

FIG. 8 is a schematic structural diagram of another touch pad provided in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another touch pad according to an embodiment of the invention;

fig. 10 is a schematic structural diagram of another touch pad according to an embodiment of the invention;

fig. 11 is a schematic top view of a touch display panel according to an embodiment of the disclosure;

fig. 12 is a schematic cross-sectional view of the touch display panel shown in fig. 11.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a touch panel according to an embodiment of the present invention, and referring to fig. 1, the touch panel includes a plurality of touch electrode blocks 10 and a plurality of touch traces 20. The touch electrode blocks 10 are arranged in rows and columns along a first direction X and a second direction Y. The plurality of touch electrode blocks 10 are arranged in a row along the first direction X, and the plurality of touch electrode blocks 10 are arranged in a column along the second direction Y. Two adjacent rows of touch electrode blocks 10 are distributed in a staggered manner, and two adjacent columns of touch electrode blocks 10 are distributed in a staggered manner. The plurality of touch electrode blocks 10 include a plurality of touch driving electrode blocks 11 and a plurality of touch sensing electrode blocks 12. Along the first direction X, a row of touch driving electrode blocks 11 and a row of touch sensing electrode blocks 12 are alternately distributed one by one. That is to say, along the first direction X, one touch sensing electrode block 12 is spaced between two adjacent rows of touch driving electrode blocks 11, and one touch driving electrode block 11 is spaced between two adjacent rows of touch sensing electrode blocks 12. Along the second direction Y, the rows of touch driving electrode blocks 11 and the rows of touch sensing electrode blocks 12 are alternately distributed one by one. That is to say, along the second direction Y, one row of touch sensing electrode blocks 12 is spaced between two adjacent rows of touch driving electrode blocks 11, and one row of touch driving electrode blocks 11 is spaced between two adjacent rows of touch sensing electrode blocks 12. The plurality of touch traces 20 includes a plurality of touch driving traces 21 and a plurality of touch sensing traces 22. Along the first direction X, at least two adjacent touch sensing electrode blocks 12 are electrically connected to the same touch sensing trace 22. Along the second direction Y, a row of touch driving electrode blocks 11 is electrically connected to the same touch driving trace 21. Wherein the first direction X intersects the second direction Y, and in some embodiments, the first direction X is perpendicular to the second direction Y. In other embodiments, the first direction X and the second direction Y may not be perpendicular.

In the embodiment of the present invention, a row of touch driving electrode blocks 11 arranged along the second direction Y is electrically connected to the same touch driving trace 21, that is, all touch driving electrode blocks 11 in the same row share the same touch driving trace 21. At least two touch sensing electrode blocks 12 arranged along the first direction X are electrically connected to the same touch sensing trace 22, that is, the at least two touch sensing electrode blocks 12 share the same touch sensing trace 22, so that the number of touch driving traces 21 and the number of touch sensing traces 22 are reduced, that is, the number of touch traces 20 is reduced, more space is reserved for the touch sensing electrode blocks 10, and the touch sensitivity is improved. Because the number of the touch traces 20 is reduced and the wiring space is saved, the frame can be reduced, and the narrow frame design of the touch display panel using the touch pad is realized.

Optionally, referring to fig. 1, the touch sensing electrode blocks 12 electrically connected to the same touch sensing trace 22 form a touch sensing electrode group 30. All the touch sensing traces 22 electrically connected to a row of touch sensing electrode groups 30 are located on the same side of the row of touch sensing electrode groups 30. In the embodiment of the present invention, all the touch sensing traces 22 electrically connected to a row of touch sensing electrode sets 30 are located at the same side of the row of touch sensing electrode sets 30, so that all the touch sensing traces 22 electrically connected to a row of touch sensing electrode sets 30 are concentrated in a smaller space, which is convenient for performing similar or identical processing on the concentrated touch sensing traces 22, for example, electrically connecting the concentrated touch sensing traces 22 to the same driving circuit.

Exemplarily, referring to fig. 1, the plurality of touch sensing traces 22 includes a first touch sensing trace R1, a second touch sensing trace R2, a third touch sensing trace R3 and a fourth touch sensing trace R4. The first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3, and the fourth touch sensing trace R4 are electrically connected to one touch sensing electrode set 30, and 4 touch sensing electrode sets 30 electrically connected to the first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3, and the fourth touch sensing trace R4 are arranged along the second direction Y. The first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3 and the fourth touch sensing trace R4 are located on the same side of the row of touch sensing electrode sets 30.

Alternatively, referring to fig. 1, the plurality of touch sense electrode groups 30 includes a plurality of first touch sense electrode groups 31 arranged along the second direction Y, and the first touch sense electrode groups 31 include the ith row of touch sense electrode block 12 and the (i + 1) th row of touch sense electrode blocks 12. That is, the first touch sense electrode group 31 includes two adjacent touch sense electrode blocks 12 along the first direction X, one of which is located in the ith row of touch sense electrode blocks 12, and the other of which is located in the (i + 1) th row of touch sense electrode blocks 12. The ith touch driving trace 21 electrically connected to the ith row of touch driving electrode blocks 11 extends along the second direction Y. In the ith row of touch driving electrode blocks 11 along the second direction Y, two adjacent touch driving electrode blocks 11 are connected through a straight line segment, so that the space occupied by the ith touch driving trace 21 is reduced. All the touch sensing traces 22 electrically connected to the first touch sensing electrode group 31 are located on a first side of the first touch sensing electrode group 31. The (i + 1) th touch driving trace 21 electrically connected to the (i + 1) th row of touch driving electrode blocks 11 is located on the second side of the first touch sensing electrode group 31 and extends along the second direction Y. The ith row of touch sensing electrode blocks 12 is located between the ith row of touch driving electrode blocks 11 and the (i + 1) th row of touch driving electrode blocks 11, the first side is opposite to the second side, and i is a positive integer.

Exemplarily, referring to fig. 1, the plurality of touch driving traces 21 include a first touch driving trace T1 and a second touch driving trace T2. Taking i ═ 1 as an example, the first touch sense electrode group 31 includes the touch sense electrode block 12 in the 1 st row of touch sense electrode blocks 12 and the 2 nd row of touch sense electrode blocks 12. The first touch driving trace T1 electrically connected to the 1 st column touch driving electrode block 11 extends along the second direction Y. The first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3, and the fourth touch sensing trace R4 are located between the first touch sensing electrode set 31 and the first touch driving trace T1. The second touch driving trace T2 is located on a side of the first touch sensing electrode group 31 away from the first touch driving trace T1, and the second touch driving trace T2 extends along the second direction Y. In other embodiments, it is also possible to provide: the first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3, and the fourth touch sensing trace R4 are located at a side of the first touch sensing electrode group 31 away from the first touch driving trace T1, and the second touch driving trace T2 is located between the first touch sensing electrode group 31 and the first touch driving trace T1.

Optionally, referring to fig. 1, the plurality of touch sense electrode sets 30 further includes a plurality of second touch sense electrode sets 32 arranged along the second direction Y, and the second touch sense electrode sets 32 include the touch sense electrode blocks 12 in the i +2 th row of touch sense electrode blocks 12 and the i +3 rd row of touch sense electrode blocks 12. That is to say, the second touch sense electrode group 32 includes two touch sense electrode blocks 12 adjacent to each other in the first direction X, one of which is located in the (i + 2) th row of touch sense electrode blocks 12, and the other of which is located in the (i + 3) th row of touch sense electrode blocks 12. The (i + 2) th touch driving trace 21 electrically connected to the (i + 2) th touch driving electrode block 11 extends along the second direction Y. In the second direction Y, in the (i + 2) th row of touch driving electrode blocks 11, two adjacent touch driving electrode blocks 11 are connected through a straight line segment, so that the space occupied by the (i + 2) th touch driving trace 21 is reduced. All the touch sense traces 22 electrically connected to the second touch sense electrode group 32 are located on the second side of the second touch sense electrode group 32. The (i + 3) th touch driving trace 21 electrically connected to the (i + 3) th touch driving electrode block 11 is located on the first side of the second touch sensing electrode group 32 and extends along the second direction Y.

Exemplarily, referring to fig. 1, the plurality of touch driving traces 21 further includes a third touch driving trace T3 and a fourth touch driving trace T4. The second touch driving trace T2 is located between the first touch driving trace T1 and the third touch driving trace T3, and the third touch driving trace T3 is located between the second touch driving trace T2 and the fourth touch driving trace T4. The plurality of touch sensing traces 22 further includes a fifth touch sensing trace R5, a sixth touch sensing trace R6, a seventh touch sensing trace R7, and an eighth touch sensing trace R8. Taking i as an example, the second touch sensing electrode group 32 includes the 3 rd row of touch sensing electrode blocks 12 and the touch sensing electrode blocks 12 in the 4 th row of touch sensing electrode blocks 12. The third touch driving trace T3 electrically connected to the 3 rd column touch driving electrode block 11 extends along the second direction Y. The fifth touch sensing trace R5, the sixth touch sensing trace R6, the seventh touch sensing trace R7, and the eighth touch sensing trace R8 are electrically connected to one second touch sensing electrode group 32, and 4 second touch sensing electrode groups 32 electrically connected to the fifth touch sensing trace R5, the sixth touch sensing trace R6, the seventh touch sensing trace R7, and the eighth touch sensing trace R8 are arranged along the second direction Y. The fifth touch sensing trace R5, the sixth touch sensing trace R6, the seventh touch sensing trace R7, and the eighth touch sensing trace R8 are located on a side of the second touch sensing electrode group 32 away from the third touch driving trace T3. The fourth touch driving trace T4 is located between the second touch sensing electrode set 32 and the third touch driving trace T3, and the fourth touch driving trace T4 extends along the second direction Y.

Referring to fig. 2, the first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3 and the fourth touch sensing trace R4 are located on a side of the first touch sensing electrode group 31 away from the first touch driving trace T1, and the second touch driving trace T2 is located between the first touch sensing electrode group 31 and the first touch driving trace T1. The fifth touch sensing trace R5, the sixth touch sensing trace R6, the seventh touch sensing trace R7, and the eighth touch sensing trace R8 are located between the second touch sensing electrode group 32 and the third touch driving trace T3, and the fourth touch driving trace T4 is located on a side of the second touch sensing electrode group 32 away from the third touch driving trace T3.

Exemplarily, referring to fig. 1 and fig. 2, the second touch driving trace T2 and the fourth touch driving trace T4 are symmetric with respect to the third touch driving trace T3, the fourth touch sensing trace R4 and the fifth touch sensing trace R5 are symmetric with respect to the third touch driving trace T3, the third touch sensing trace R3 and the sixth touch sensing trace R6 are symmetric with respect to the third touch driving trace T3, the second touch sensing trace R2 and the seventh touch sensing trace R7 are symmetric with respect to the third touch driving trace T3, the first touch sensing trace R1 and the eighth touch sensing trace R8 are symmetric with respect to the third touch driving trace T3, and such a symmetric arrangement of the routing is favorable for simplifying the routing difficulty.

Fig. 3 is a schematic structural diagram of another touch pad according to an embodiment of the invention, and referring to fig. 3, the first touch sense electrode group 31 further includes touch sense electrode blocks 12 in the (i + 2) th row of touch sense electrode blocks 12. The first touch sense electrode group 31 includes three touch sense electrode blocks 12 adjacent to each other in the first direction X. The (i + 2) th touch driving trace 21 electrically connected to the (i + 2) th touch driving electrode block 11 is located between the first touch sensing electrode group 31 and the (i + 1) th touch driving trace 21. That is to say, the third touch driving trace T3 is located between the first touch sense electrode set 31 and the second touch driving trace T2. The third touch driving trace T3 is located between the first touch driving trace T1 and the second touch driving trace T2.

Fig. 4 is a schematic structural diagram of another touch pad according to an embodiment of the present invention, and referring to fig. 4, the touch sensing electrode group 30 includes the ith row of touch sensing electrode block 12, the (i + 1) th row of touch sensing electrode block 12, and the (i + 2) th row of touch sensing electrode block 12. The first touch sense electrode group 31 includes three touch sense electrode blocks 12 adjacent to each other in the first direction X. The touch driving trace 21 electrically connected to the ith row of touch driving electrode block 11 extends along the second direction Y. All the touch sensing traces 22 electrically connected to a row of touch sensing electrode sets 30 are located on a first side of the touch sensing electrode set 30. The (i + 1) th touch driving trace 21 electrically connected to the (i + 1) th row of touch driving electrode blocks 11 is located between the touch sensing electrode group 30 and the (i + 2) th row of touch driving electrode blocks 11. The (i + 2) th touch driving trace 21 electrically connected to the (i + 2) th row of touch driving electrode blocks 11 is located on a second side of the touch sensing electrode group 30 and extends along the second direction Y. The ith row of touch sensing electrode block 12 is located between the ith row of touch driving electrode block 11 and the (i + 1) th row of touch driving electrode block 11, the first side is opposite to the second side, and i is a positive integer.

For example, referring to fig. 4, taking i ═ 1 as an example, the first touch sensing trace R1, the second touch sensing trace R2, the third touch sensing trace R3 and the fourth touch sensing trace R4 are located between the touch sensing electrode set 30 and the first touch driving trace T1. The second touch driving trace T2 and the third touch driving trace T3 are located at a side of the first touch sensing electrode group 31 away from the first touch driving trace T1, the second touch driving trace T2 is located between the touch sensing electrode group 30 and the third touch driving trace T3, the second touch driving trace T2 is located between the first touch driving trace T1 and the third touch driving trace T3, and the third touch driving trace T3 extends along the second direction Y.

Fig. 5 is a schematic structural view of another touch panel according to an embodiment of the invention, and referring to fig. 5, the touch sensing electrode blocks 12 electrically connected to the same touch sensing trace 22 form a touch sensing electrode group 30. Along the second direction Y, the touch sensing trace 22 electrically connected to the odd-numbered touch sensing electrode groups 30 is located on a first side of the row of touch sensing electrode groups 30, and the touch sensing trace 22 electrically connected to the even-numbered touch sensing electrode groups 30 is located on a second side of the row of touch sensing electrode groups 30, wherein the first side is opposite to the second side. In the embodiment of the present invention, all the touch sensing traces 22 electrically connected to a row of touch sensing electrode groups 30 are respectively located at two opposite sides of the row of touch sensing electrode groups 30 according to odd-even rows, so that all the touch sensing traces 22 electrically connected to a row of touch sensing electrode groups 30 are relatively dispersed, the touch sensing traces 22 are distributed uniformly in space, and the transmittance and the reflectance of the touch sensing traces 22 at each position are relatively consistent, which is beneficial to improving the display effect of the touch display panel, reducing the interference between adjacent touch traces 20, and improving the positioning accuracy of the touch panel.

For example, referring to fig. 5, the first touch sensing trace R1 and the second touch sensing trace R2 electrically connected to the odd-numbered row of touch sensing electrode group 30 are located between the first touch driving trace T1 and the touch sensing electrode group 30. The third touch sensing trace R3 and the fourth touch sensing trace R4 electrically connected to the even-numbered row of touch sensing electrode group 30 are located at a side of the touch sensing electrode group 30 away from the first touch driving trace T1. In other embodiments, it is also possible to provide: the first touch sensing trace R1 and the second touch sensing trace R2 electrically connected to the odd-numbered row touch sensing electrode group 30 are located at a side of the touch sensing electrode group 30 away from the first touch driving trace T1. The third touch sensing trace R3 and the fourth touch sensing trace R4 electrically connected to the even-numbered rows of touch sensing electrode sets 30 are located between the first touch driving trace T1 and the touch sensing electrode set 30.

Alternatively, referring to fig. 5, the touch sensing electrode group 30 includes the touch sensing electrode blocks 12 in the ith to (i +1+ m) th rows of touch sensing electrode blocks 12. The touch sensing electrode group 30 includes m +2 touch sensing electrode blocks 12. The ith touch driving trace 21 electrically connected to the ith row of touch driving electrode blocks 11 extends along the second direction Y. In the second direction Y, in the ith row of touch driving electrode blocks 11, two adjacent touch driving electrode blocks 11 are connected through a straight line segment, so that the space occupied by the ith touch driving trace 21 is reduced. The touch driving trace 21 electrically connected to the (i + 1) th row of touch driving electrode blocks 11 is an (i + 1) th touch driving trace 21, and the touch driving trace 21 electrically connected to the (i + 1) th + m th row of touch driving electrode blocks 11 is an (i +1+ m) th touch driving trace 21. The (i + 1) th to (i + 1) th touch driving traces 21 each include a first trace 301 and a second trace 302 (in fig. 5, a first trace 301 and a second trace 302 are marked by bold lines). The first wire 301 extends along a first direction X, the second wire 302 extends along a second direction Y, the first wire 301 and the second wire 302 are connected end to end, and at least one first wire 301 is located between two adjacent touch sensing electrode sets 30. There is at least one second trace 302 located between the touch sensing trace 22 and the touch sensing electrode group 30. The ith row of touch sensing electrode blocks 12 is located between the ith row of touch driving electrode blocks 11 and the (i + 1) th row of touch driving electrode blocks 11, i is a positive integer, and m is greater than or equal to 0.

Exemplarily, referring to fig. 5, the first traces 301 between the first touch sense electrode group 30 and the last touch sense electrode group 30 all satisfy: any one of the first traces 301 is located between two adjacent touch sense electrode sets 30. The plurality of first traces 301 may further include a first trace 301 on a side of the first touch sense electrode group 30 away from the last touch sense electrode group 30, and a first trace 301 on a side of the last touch sense electrode group 30 away from the first touch sense electrode group 30. The first touch sensing electrode group 30 and the last touch sensing electrode group 30 are located at the head and tail ends of the same row of touch sensing electrode groups 30. The second trace 302 is located at a side closest to the touch sense electrode assembly 30, and the second trace 302 is opposite to the touch sense trace 22 electrically connected to the touch sense electrode assembly 30.

For example, referring to fig. 5, taking i as 1 and m as 0 as an example, the touch sensing electrode group 30 includes the touch sensing electrode blocks 12 in the 1 st to 2 nd rows of touch sensing electrode blocks 12. The touch driving trace 21 electrically connected to the 2 nd row of touch driving electrode blocks 11 is a second touch driving trace T2, and the second touch driving trace T2 includes a first trace 301 and a second trace 302. The first trace 301 and the second trace 302 are connected end to end, and the second touch driving trace T2 is in a serpentine shape. The first wire 301 passes through a gap between two adjacent touch sensing electrode groups 30. The odd-numbered second traces 302 are located on a side of the touch sense electrode assembly 30 away from the first touch driving trace T1, and the even-numbered second traces 302 are located between the touch sense electrode assembly 30 and the first touch driving trace T1. Any touch sense electrode group 30 is located between the touch sense trace 22 electrically connected thereto and the second trace 302 closest thereto.

Fig. 6 is a schematic structural diagram of another touch pad according to an embodiment of the invention, and referring to fig. 6, the touch sense electrode group 30 includes the touch sense electrode blocks 12 in the ith to (i +1+ m) th rows of touch sense electrode blocks 12. The touch sensing electrode group 30 includes m +2 touch sensing electrode blocks 12. m is greater than or equal to 1, and thus, the touch sense electrode group 30 includes at least 3 touch sense electrode blocks 12 (in fig. 6, an example where one touch sense electrode group 30 includes 3 touch sense electrode blocks 12 is taken as an example). The touch driving trace 21 electrically connected to the kth row of touch driving electrode block 11 is a kth touch driving trace 21, the touch driving trace 21 electrically connected to the (k + 1) th row of touch driving electrode block 11 is a (k + 1) th touch driving trace 21, the touch driving trace 21 electrically connected to the (k + 2) th row of touch driving electrode block 11 is a (k + 2) th touch driving trace 21, and the (k + 1) th touch driving trace 21 is located between the kth touch driving trace 21 and the (k + 2) th touch driving trace 21. Wherein m is more than or equal to 1, and k is more than or equal to i and less than or equal to i + m-1. That is to say, the first row of touch driving electrode blocks 11 to the last row of touch driving electrode blocks 11 are sequentially arranged along the first direction X, and correspondingly, the first row of touch driving routing lines 21 to the last row of touch driving routing lines 21 are sequentially arranged along the first direction X.

For example, referring to fig. 6, taking i equal to 1, m equal to 1, and k equal to 1 as an example, the touch driving trace 21 electrically connected to the 1 st column of touch driving electrode block 11 is a first touch driving trace T1, the touch driving trace 21 electrically connected to the 2 nd column of touch driving electrode block 11 is a second touch driving trace T2, the touch driving trace 21 electrically connected to the 3 rd column of touch driving electrode block 11 is a third touch driving trace T3, and the second touch driving trace T2 is located between the first touch driving trace T1 and the third touch driving trace T3.

Fig. 7 is a schematic structural diagram of another touch panel according to an embodiment of the present invention, and referring to fig. 7, i is 1, and m is 2, the touch sensing electrode group 30 includes the touch sensing electrode block 12 in the ith to (i + 3) th touch sensing electrode blocks 12. The touch driving trace 21 electrically connected to the 4 th row of touch driving electrode blocks 11 is a fourth touch driving trace T4. When k is equal to 1, the second touch driving trace T2 is located between the first touch driving trace T1 and the third touch driving trace T3. When k is equal to 2, the third touch driving trace T3 is located between the second touch driving trace T2 and the fourth touch driving trace T4. The first touch driving trace T1, the second touch driving trace T2, the third touch driving trace T3 and the fourth touch driving trace T4 are sequentially arranged along the first direction X.

Fig. 8 is a schematic structural diagram of another touch pad according to an embodiment of the invention, and referring to fig. 8, the touch sensing electrode blocks 12 electrically connected to the same touch sensing trace 22 form a touch sensing electrode group 30. Along the second direction Y, the touch sensing trace 22 electrically connected to the jth row to jth + n row touch sensing electrode assemblies 30 is located on the first side of the row of touch sensing electrode assemblies 30, and the touch sensing trace 22 electrically connected to the jth row to jth + n +1 row touch sensing electrode assemblies 30 is located on the second side of the row of touch sensing electrode assemblies 30. Wherein the first side is opposite to the second side, and j and n are positive integers. In the embodiment of the present invention, among the touch sensing traces 22 electrically connected to a row of touch sensing electrode sets 30, n +1 touch sensing traces 22 are taken as a group, and the odd-even groups are respectively located at two opposite sides of the row of touch sensing electrode sets 30.

Exemplarily, referring to fig. 8, j is 1 and n is 1. The touch sense trace 22 electrically connected to the row 1 touch sense electrode group 30 and the row 2 touch sense electrode group 30 is located on a first side of the row touch sense electrode group 30, and the touch sense trace 22 electrically connected to the row 3 touch sense electrode group 30 and the row 4 touch sense electrode group 30 is located on a second side of the row touch sense electrode group 30.

For example, referring to fig. 8, the first touch sensing trace R1 and the second touch sensing trace R2 are located between the touch sensing electrode group 30 and the first touch driving trace T1. The third touch sensing trace R3 and the fourth touch sensing trace R4 are located on a side of the touch sensing electrode set 30 away from the first touch driving trace T1. In other embodiments, it is also possible to provide: the first touch sensing trace R1 and the second touch sensing trace R2 are located on one side of the touch sensing electrode set 30 away from the first touch driving trace T1, and the third touch sensing trace R3 and the fourth touch sensing trace R4 are located between the touch sensing electrode set 30 and the first touch driving trace T1.

Optionally, referring to fig. 8, the ith touch driving trace 21 electrically connected to the ith column of touch driving electrode block 11 extends along the second direction Y. The touch driving trace 21 electrically connected to the (i + 1) th column of touch driving electrode blocks 11 is an (i + 1) th touch driving trace 21, the (i + 1) th touch driving trace 21 includes a third trace 303 and a fourth trace 304 (a third trace 303 and a fourth trace 304 are identified by a bold line in fig. 8), the third trace 303 extends along the first direction X, the fourth trace 304 extends along the second direction Y, and the third trace 303 and the fourth trace 304 are connected end to end. At least one third trace 303 is located between the j + n-th row touch sense electrode set 30 and the j + n + 1-th row touch sense electrode set 30, and at least one fourth trace 304 is located between the touch sense trace 22 and the touch sense electrode set 30. The ith row of touch sensing electrode blocks 12 is located between the ith row of touch driving electrode blocks 11 and the (i + 1) th row of touch driving electrode blocks 11, and i is a positive integer.

For example, referring to fig. 8, one third trace 303 is disposed every n +1 touch sensing electrode sets 30, the length of the fourth trace 304 extends to correspond to the n +1 touch sensing electrode sets 30, and the fourth trace 304 is located at a side opposite to the touch sensing trace 22 electrically connected to the n +1 touch sensing electrode sets 30.

For example, referring to fig. 8, taking i-1, j-1, and n-1 as an example, the touch sensing electrode group 30 includes the touch sensing electrode blocks 12 in the 1 st to 2 nd rows of touch sensing electrode blocks 12. The touch driving trace 21 electrically connected to the 2 nd row touch driving electrode block 11 is a second touch driving trace T2, and the second touch driving trace T2 includes a third trace 303 and a fourth trace 304. The third trace 303 and the fourth trace 304 are connected end to end, and the second touch driving trace T2 is shaped like a snake. The third trace 303 passes through a gap between the second touch sense electrode group 30 and the third touch sense electrode group 30. Any touch sense electrode group 30 is located between the touch sense trace 22 electrically connected thereto and the fourth trace 304 closest thereto.

Fig. 9 is a schematic structural diagram of another touch pad according to an embodiment of the present invention, and referring to fig. 9, j-1 and n-1 are taken as an example. The touch sensing electrode group 30 includes the touch sensing electrode blocks 12 in the 1 st to 3 rd rows of touch sensing electrode blocks 12. The touch sense trace 22 electrically connected to the row 1 touch sense electrode group 30 and the row 2 touch sense electrode group 30 is located on a first side of the row touch sense electrode group 30, and the touch sense trace 22 electrically connected to the row 3 touch sense electrode group 30 and the row 4 touch sense electrode group 30 is located on a second side of the row touch sense electrode group 30.

Optionally, referring to fig. 1 to 9, the touch electrode block 10 and the touch trace 20 are disposed on the same layer. In the embodiment of the invention, the touch electrode block 10 and the touch trace 20 are disposed on the same layer, so that the thickness of the touch panel can be reduced. And the same material can be adopted to simultaneously form the touch electrode block 10 and the touch trace 20 in the same process, so as to save the process. The touch electrode block 10 and the touch trace 20 can be formed at the same time by etching the same conductive film layer, for example. The conductive film layer may be, for example, a metal film layer or a metal oxide film layer.

Fig. 10 is a schematic structural view of another touch panel according to an embodiment of the invention, and referring to fig. 10, all touch sensing traces 22 electrically connected to a row of touch sensing electrode blocks 12 arranged along a first direction X are electrically connected to each other. In the embodiment of the present invention, all touch sensing electrode blocks 12 in a row arranged along the first direction X are electrically connected to form a touch sensing electrode unit, all touch driving electrode blocks 11 in a row arranged along the second direction Y are electrically connected to form a touch driving electrode unit, the touch sensing electrode blocks 12 in different rows are insulated from each other, the touch driving electrode blocks 11 in different rows are insulated from each other, the touch sensing electrode blocks 12 are insulated from the touch driving electrode blocks 11, and the touch driving electrode units are insulated from the touch sensing electrode units.

For example, referring to fig. 10, a mutual capacitance (coupling capacitance) may be formed at a crossing portion of the touch sensing electrode unit and the touch driving electrode unit, when a human body contacts the touch pad, a capacitance connected in series with the mutual capacitance may be formed between the finger and the touch pad due to grounding of the human body, which may further cause the capacitance detected by the touch sensing electrode unit to be reduced and may generate a corresponding touch sensing signal, and thus a specific touch occurrence position may be determined through corresponding conversion.

Exemplarily, referring to fig. 10, the plurality of touch driving traces 21 further includes a fifth touch driving trace T5, a sixth touch driving trace T6, a seventh touch driving trace T7 and an eighth touch driving trace T8. The multiple touch sensing traces 22 further include a ninth touch sensing trace R9, a tenth touch sensing trace R10, an eleventh touch sensing trace R11, a twelfth touch sensing trace R12, a thirteenth touch sensing trace R13, a fourteenth touch sensing trace R14, a fifteenth touch sensing trace R15, and a sixteenth touch sensing trace R16. The first touch sensing trace R1, the eighth touch sensing trace R8, the ninth touch sensing trace R9 and the sixteenth touch sensing trace R16 are electrically connected to each other, the second touch sensing trace R2, the seventh touch sensing trace R7, the tenth touch sensing trace R10 and the fifteenth touch sensing trace R15 are electrically connected to each other, the third touch sensing trace R3, the sixth touch sensing trace R6, the eleventh touch sensing trace R11 and the fourteenth touch sensing trace R14 are electrically connected to each other, and the fourth touch sensing trace R4, the fifth touch sensing trace R5, the twelfth touch sensing trace R12 and the thirteenth touch sensing trace R13 are electrically connected to each other. The first to eighth touch driving traces T1 to T8 are sequentially arranged along the first direction X.

Fig. 11 is a schematic top view of a touch display panel according to an embodiment of the present invention, and referring to fig. 11, the touch display panel includes the touch pad 100 in the above embodiment. Because the touch display panel in the embodiment of the invention comprises the touch pad in the embodiment, the quantity of touch routing is reduced, and the touch sensitivity is improved. And the frame of the touch display panel is reduced.

Fig. 12 is a schematic cross-sectional view of the touch display panel shown in fig. 11, and referring to fig. 11 and 12, the touch display panel further includes an organic light emitting display panel, and the touch pad 100 is located on a light emitting display side of the organic light emitting display panel. The touch electrode block 10 and the touch trace 20 both adopt transparent metal oxide, and the transmittance of the transparent metal oxide is greater than a preset value. The transparent metal oxide may be, for example, indium tin oxide, and the preset value may be, for example, 95%, 97%, or 99%. In the embodiment of the invention, the touch electrode block 10 and the touch trace 20 both adopt transparent metal oxide, so that the touch electrode block 10 and the touch trace 20 have higher transmittance, and the light emitting display of the organic light emitting display panel is not affected.

Exemplarily, referring to fig. 12, the organic light emitting display panel includes a substrate 210, a pixel driving circuit 220, a first electrode 230, an organic light emitting function layer 240, a second electrode 250, a pixel defining layer 260, and a thin film encapsulation layer 270. The pixel driving circuit 220 is located between the substrate 210 and the first electrode 230, the pixel driving circuit 220 may include a thin film transistor, and the first electrode 230 is electrically connected to a source or a drain of the thin film transistor. The pixel defining layer 260 is positioned between the first electrode 230 and the second electrode 250, and the organic light emitting functional layer 240 is positioned in the opening of the pixel defining layer 260. The thin film encapsulation layer 270 is disposed on a side of the second electrode 250 away from the substrate 210, and is used for preventing water vapor and oxygen from corroding the organic light emitting function layer 240. The touch pad 100 may be located on a side of the thin film encapsulation layer 270 away from the substrate 210. In this case, the touch panel 100 is close to the touch subject (e.g., finger), and the touch accuracy is high. In the process of forming the touch panel 100, the thin film encapsulation layer 270 is disposed on the second electrode 250 and the organic light emitting functional layer 240 to protect the second electrode 250 and the organic light emitting functional layer 240 from being damaged and corroded by water and oxygen. In other embodiments, the touch display panel may further include another panel besides the organic light emitting display panel, for example, a liquid crystal panel, an electrophoresis panel, or a quantum dot panel, which is not limited in the present invention.

It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A touch pad is characterized by comprising a plurality of touch electrode blocks and a plurality of touch wires;

the touch electrode blocks are arranged in rows and columns along a first direction and a second direction, the touch electrode blocks are arranged in rows along the first direction, the touch electrode blocks are arranged in columns along the second direction, two adjacent rows of the touch electrode blocks are distributed in a staggered manner, and two adjacent columns of the touch electrode blocks are distributed in a staggered manner; the touch control electrode blocks comprise a plurality of touch control driving electrode blocks and a plurality of touch control sensing electrode blocks, a row of touch control driving electrode blocks and a row of touch control sensing electrode blocks are alternately distributed one by one along the first direction, and a line of touch control driving electrode blocks and a line of touch control sensing electrode blocks are alternately distributed one by one along the second direction;

the plurality of touch traces include a plurality of touch driving traces and a plurality of touch sensing traces, at least two adjacent touch sensing electrode blocks are electrically connected to the same touch sensing trace along the first direction, the touch sensing electrode blocks electrically connected to the same touch sensing trace form a touch sensing electrode group, and one row of the touch sensing electrode blocks includes a plurality of touch sensing electrode groups; and along the second direction, a row of the touch driving electrode blocks is electrically connected to the same touch driving routing line.

2. The touch pad of claim 1,

all the touch sensing traces electrically connected with a row of the touch sensing electrode groups are located on the same side of the row of the touch sensing electrode groups.

3. The touch pad of claim 2, wherein the plurality of touch sense electrode sets comprises a plurality of first touch sense electrode sets arranged along the second direction, and the first touch sense electrode sets comprise the ith row of touch sense electrode blocks and the (i + 1) th row of touch sense electrode blocks;

the ith touch drive routing wire electrically connected with the ith row of touch drive electrode blocks extends along the second direction;

all the touch sensing traces electrically connected with the first touch sensing electrode group are positioned on the first side of the first touch sensing electrode group;

the (i + 1) th touch driving routing line electrically connected with the (i + 1) th row of touch driving electrode blocks is positioned on the second side of the first touch sensing electrode group and extends along the second direction;

the touch sensing electrode blocks in the ith row are positioned between the touch driving electrode blocks in the ith row and the touch driving electrode blocks in the (i + 1) th row, the first side is opposite to the second side, and i is a positive integer.

4. The touch pad of claim 3, wherein the plurality of touch sense electrode sets further comprises a plurality of second touch sense electrode sets arranged along the second direction, the second touch sense electrode sets comprising an i +2 th row of the touch sense electrode blocks and the touch sense electrode blocks in an i +3 th row of the touch sense electrode blocks;

the (i + 2) th touch driving routing line electrically connected with the (i + 2) th row of touch driving electrode blocks extends along the second direction;

all the touch sensing traces electrically connected with the second touch sensing electrode group are located on the second side of the second touch sensing electrode group;

the (i + 3) th touch driving routing line electrically connected with the (i + 3) th row of touch driving electrode blocks is located on the first side of the second touch sensing electrode group and extends along the second direction.

5. The touch pad of claim 3, wherein the first touch sense electrode set further comprises the touch sense electrode block in the i +2 th column of the touch sense electrode blocks;

the (i + 2) th touch driving routing line electrically connected with the (i + 2) th row of touch driving electrode blocks is located between the first touch sensing electrode group and the (i + 1) th touch driving routing line.

6. The touch pad of claim 2, wherein the touch sense electrode group comprises the touch sense electrode block in an ith column, the touch sense electrode block in an i +1 th column, and the touch sense electrode block in an i +2 th column;

the touch driving routing wire electrically connected with the touch driving electrode block in the ith row extends along the second direction;

all the touch sensing wires electrically connected with the touch sensing electrode groups in a row are positioned on the first side of the touch sensing electrode groups;

the (i + 1) th touch driving routing wire electrically connected with the (i + 1) th row of touch driving electrode blocks is positioned between the touch sensing electrode group and the (i + 2) th row of touch driving electrode blocks;

the (i + 2) th touch driving routing line electrically connected with the (i + 2) th row of touch driving electrode blocks is positioned on the second side of the touch sensing electrode group and extends along the second direction;

the ith row of the touch sensing electrode blocks is positioned between the ith row of the touch driving electrode blocks and the (i + 1) th row of the touch driving electrode blocks, the first side is opposite to the second side, and i is a positive integer.

7. The touch pad of claim 1, wherein along the second direction, the touch sense traces electrically connected to the odd-numbered rows of the touch sense electrode sets are located on a first side of the row of the touch sense electrode sets, and the touch sense traces electrically connected to the even-numbered rows of the touch sense electrode sets are located on a second side of the row of the touch sense electrode sets;

wherein the first side is opposite the second side.

8. The touch pad of claim 7, wherein the touch sense electrode group comprises the touch sense electrode blocks in the ith to (i +1+ m) th columns of the touch sense electrode blocks;

the touch driving wires electrically connected with the (i + 1) th row of touch driving electrode blocks are the (i + 1) th touch driving wires, the touch driving wires electrically connected with the (i + 1) th row of touch driving electrode blocks are the (i + 1) th +1+ m) th touch driving wires, the (i + 1) th to (i + 1) th +1+ m) th touch driving wires all comprise first wires and second wires, the first wires extend along the first direction, the second wires extend along the second direction, the first wires and the second wires are connected end to end, at least one first wire is positioned between two adjacent touch sensing electrode groups, and at least one second wire is positioned between the touch sensing electrode groups;

the touch sensing electrode block in the ith row is positioned between the touch driving electrode block in the ith row and the touch driving electrode block in the (i + 1) th row, i is a positive integer, and m is larger than or equal to 0.

9. The touch panel according to claim 8, wherein the touch driving trace electrically connected to the kth row of the touch driving electrode block is the kth touch driving trace, the touch driving trace electrically connected to the (k + 1) th row of the touch driving electrode block is the (k + 1) th touch driving trace, the touch driving trace electrically connected to the (k + 2) th row of the touch driving electrode block is the (k + 2) th touch driving trace, and the (k + 1) th touch driving trace is located between the kth touch driving trace and the (k + 2) th touch driving trace;

wherein m is more than or equal to 1, and k is more than or equal to i and less than or equal to i + m-1.

10. The touch pad of claim 1, wherein the touch sensing electrode blocks electrically connected to the same touch sensing trace form a touch sensing electrode group;

along the second direction, the touch sensing trace electrically connected to the touch sensing electrode group of the j-th row to the j + n-th row is located on the first side of the row of the touch sensing electrode group, and the touch sensing trace electrically connected to the touch sensing electrode group of the j + n + 1-th row to the j +2n + 1-th row is located on the second side of the row of the touch sensing electrode group;

wherein the first side is opposite to the second side, and j and n are positive integers.

11. The touch panel of claim 10, wherein an ith touch driving trace electrically connected to the ith column of touch driving electrode blocks extends along the second direction;

the touch driving wires electrically connected with the (i + 1) th row of touch driving electrode blocks are (i + 1) th touch driving wires and comprise third wires and fourth wires, the third wires extend along the first direction, the fourth wires extend along the second direction, the third wires and the fourth wires are connected end to end, at least one third wire is positioned between the (j + n) th row of touch sensing electrode groups and the (j + n + 1) th row of touch sensing electrode groups, and at least one fourth wire is positioned between the touch sensing wires and the touch sensing electrode groups;

the ith row of the touch sensing electrode blocks is positioned between the ith row of the touch driving electrode blocks and the (i + 1) th row of the touch driving electrode blocks, and i is a positive integer.

12. The touch panel of claim 1, wherein the touch electrode block and the touch trace are disposed on the same layer.

13. The touch panel of claim 1, wherein all of the touch sensing traces electrically connected to a row of touch sensing electrode blocks arranged along the first direction are electrically connected to each other.

14. A touch display panel comprising the touch panel according to any one of claims 1 to 13.

15. The touch display panel according to claim 14, further comprising an organic light-emitting display panel, wherein the touch panel is located on a light-emitting display side of the organic light-emitting display panel; the touch electrode blocks and the touch wires are both made of transparent metal oxide, and the transmittance of the transparent metal oxide is larger than a preset value.