CN109491544B

Movatterモバイル変換

Info

Publication number: CN109491544B
Application number: CN201811427419.XA
Authority: CN
Inventors: 蔡敏; 时成瑛; 秦丹丹; 夏志强
Original assignee: Shanghai AVIC Optoelectronics Co Ltd
Current assignee: Shanghai AVIC Optoelectronics Co Ltd
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2022-01-04
Anticipated expiration: 2038-11-27
Also published as: CN109491544A

Abstract

Translated fromChinese

本发明提供一种触控显示面板及显示装置，触控显示面板包括：多个触控电极块；多条触控电极线；每个所述触控电极块与至少一条所述触控电极线电连接；不同所述触控电极块连接不同的所述触控电极线；其中，所述触控显示面板的显示区边缘包括第一异形边；所述多个触控电极块包括多个第一触控电极块和多个第二触控电极块，所述第一触控电极块为与所述第一异形边距离最近的触控电极块；所述第二触控电极块为除所述第一触控电极块之外的其他触控电极块；所述第一触控电极块与所述多条触控电极线的交叠面积为第一面积；所述第二触控电极块与所述多条触控电极线的交叠面积为第二面积；所述第一面积大于所述第二面积。本发明提高触控灵敏度。

The present invention provides a touch display panel and a display device. The touch display panel includes: a plurality of touch electrode blocks; a plurality of touch electrode lines; each of the touch electrode blocks and at least one of the touch electrode lines electrical connection; different touch electrode blocks are connected to different touch electrode lines; wherein, the edge of the display area of the touch display panel includes a first shaped edge; the plurality of touch electrode blocks include a plurality of first a touch electrode block and a plurality of second touch electrode blocks, wherein the first touch electrode block is the touch electrode block closest to the first profiled edge; the second touch electrode block is the other touch electrode blocks other than the first touch electrode block; the overlapping area of the first touch electrode block and the plurality of touch electrode lines is the first area; the second touch electrode block The overlapping area with the plurality of touch electrode lines is a second area; the first area is larger than the second area. The present invention improves the touch sensitivity.

Description

Touch display panel and display device

Technical Field

Embodiments of the present invention relate to display technologies, and in particular, to a touch display panel and a display device.

Background

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

In order to meet the market demand, a special-shaped display panel is provided, the edge of the special-shaped display panel is not formed by a straight line, and the special-shaped display panel also comprises a curve edge. The specially shaped display panel is, for example, a display panel having a rounded chamfer. In order to adapt to the curve edge of the irregular display panel, the display area of the display panel and the touch electrode need to be designed correspondingly, so that the area of the touch electrode block closest to the curve edge of the display panel is smaller than the areas of other touch electrode blocks, and the touch sensitivity of the display panel is low.

Disclosure of Invention

The embodiment of the invention provides a touch display panel and a display device, which are used for improving touch sensitivity.

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

a plurality of touch electrode blocks;

a plurality of touch electrode lines; each touch electrode block is electrically connected with at least one touch electrode wire; different touch electrode blocks are connected with different touch electrode wires;

the edge of the display area of the touch display panel comprises a first special-shaped edge; the plurality of touch electrode blocks comprise a plurality of first touch electrode blocks and a plurality of second touch electrode blocks, and the first touch electrode block is the touch electrode block closest to the first special-shaped edge; the second touch electrode block is other touch electrode blocks except the first touch electrode block;

the overlapping area of the first touch electrode block and the plurality of touch electrode lines is a first area; the overlapping area of the second touch electrode block and the plurality of touch electrode lines is a second area; the first area is greater than the second area.

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

The touch display panel of the embodiment of the invention comprises a plurality of touch electrode blocks, wherein most of the touch electrode blocks are second touch electrode blocks, and the small part of the touch electrode blocks are first touch electrode blocks. The first touch electrode block is adjacent to the first special-shaped edge of the display area, and the second touch electrode block is other touch electrode blocks except the first touch electrode block. The area of the graph formed by the outer edges of the first touch electrode blocks is smaller than the area of the graph formed by the outer edges of the second touch electrode blocks. According to the embodiment of the invention, the overlapping area of the first touch electrode block and the plurality of touch electrode wires is larger than the overlapping area of the second touch electrode block and the plurality of touch electrode wires, so that the difference between the area of the first touch electrode block and the area of the second touch electrode block can be reduced, and the touch sensitivity of the touch display panel is improved. And because the number of the first touch electrode blocks occupies a smaller proportion in all the touch electrode blocks, the parasitic capacitance between the touch electrode line and the touch electrode blocks cannot be obviously increased, and the load on the touch electrode line cannot be obviously increased.

Drawings

Fig. 1 is a schematic top view of a touch display panel according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the area S1 in FIG. 1;

FIG. 3 is an enlarged view of the area S2 in FIG. 2;

FIG. 4 is an enlarged view of the area S3 in FIG. 2;

FIG. 5 is a schematic view of another enlarged structure of the area S1 in FIG. 1;

FIG. 6 is an enlarged view of the area S4 in FIG. 5;

FIG. 7 is a schematic cross-sectional view taken along AA' in FIG. 6;

FIG. 8 is an enlarged view of the area S5 in FIG. 5;

FIG. 9 is a schematic cross-sectional view taken along line BB' in FIG. 8;

FIG. 10 is a schematic cross-sectional view taken along line CC' of FIG. 8;

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

fig. 12 is a schematic top view of another touch display panel according to an embodiment of the present invention;

fig. 13 is a schematic top view of another touch display panel according to an embodiment of the invention;

fig. 14 is a schematic top view of another touch display panel according to an embodiment of the invention;

fig. 15 is a schematic top view of another touch display panel according to an embodiment of the invention;

fig. 16 is a top view of a partial structure of a touch display panel according to an embodiment of the present invention;

FIG. 17 is a schematic view of the structure taken along the section DD' in FIG. 16;

fig. 18 is a schematic structural diagram of a touch display device according to an embodiment of the present invention.

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 limiting of 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 top view of a touch display panel according to an embodiment of the present invention, and fig. 2 is an enlarged schematic structural view of an area S1 in fig. 1, referring to fig. 1 and fig. 2, the touch display panel includes a plurality oftouch electrode blocks 10 and a plurality oftouch electrode lines 20. Eachtouch electrode block 10 is electrically connected to at least onetouch electrode line 20, and differenttouch electrode blocks 10 are connected to differenttouch electrode lines 20. The display area edge P of the touch display panel includes a first irregular edge P1. The area surrounded by the display area edge P is the display area of the touch display panel. The display area edge P includes a plurality of straight line edges and at least one curved line edge, and the first shaped edge P1 is a curved line edge among the display area edges P. The plurality oftouch electrode blocks 10 include a plurality of firsttouch electrode blocks 11 and a plurality of secondtouch electrode blocks 12, that is, thetouch electrode blocks 10 include two types, i.e., a firsttouch electrode block 11 and a secondtouch electrode block 12. The firsttouch electrode blocks 11 are thetouch electrode blocks 10 closest to the first special-shaped edge P1, no othertouch electrode block 10 is arranged between one first special-shaped edge P1 and the firsttouch electrode block 11 closest to the first special-shaped edge, the secondtouch electrode blocks 12 are the othertouch electrode blocks 10 except the firsttouch electrode block 11, and the firsttouch electrode blocks 11 are arranged between the secondtouch electrode blocks 12 and the first special-shaped edge P1. The overlapping area of the firsttouch electrode block 11 and the plurality oftouch electrode lines 20 is a first area, the overlapping area of the secondtouch electrode block 12 and the plurality oftouch electrode lines 20 is a second area, and the first area is larger than the second area.

Exemplarily, referring to fig. 1 and 2, the outer edge of the firsttouch electrode block 11 also includes a curved edge, and the curved edge of the firsttouch electrode block 11 is disposed corresponding to the first irregularly shaped edge P1, the outer edge of the secondtouch electrode block 12 includes only a straight edge, and the outer edge of the secondtouch electrode block 12 is rectangular in shape. The area of the pattern surrounded by the outer edges of the firsttouch electrode blocks 11 is smaller than the area of the pattern surrounded by the outer edges of the secondtouch electrode blocks 12. Therefore, the area of the hollow portion in thefirst touch electrode 11 is smaller than the area of the hollow portion in thesecond touch electrode 12, so that the difference between the area of thefirst touch electrode 11 and the area of thesecond touch electrode 12 can be reduced, and the touch sensitivity of the touch display panel can be improved. In the embodiments of the present invention, the hollow areas of the touch electrode blocks 10 (i.e., the firsttouch electrode block 11 and the second touch electrode block 12) refer to areas of hollow areas at overlapping positions of thetouch electrode blocks 10 and thetouch electrode lines 20.

Fig. 3 is an enlarged schematic structural view of an area S2 in fig. 2, and fig. 4 is an enlarged schematic structural view of an area S3 in fig. 2, and referring to fig. 2, fig. 3 and fig. 4, the firsttouch electrode block 11 includes the firsthollow area 31. The secondtouch electrode block 12 includes a secondhollow area 32. The extending direction of the firsthollow area 31 and the extending direction of the secondhollow area 32 are both parallel to the extending direction of thetouch electrode line 20. The area of the firsthollow area 31 is smaller than the area of the secondhollow area 32. The firsthollow areas 31 overlap thetouch electrode lines 20, and the secondhollow areas 32 overlap the touch electrode lines 20. It should be noted that the hollow area in the firsttouch electrode block 11 shown in fig. 2 is schematically shown from a macro level, the firsthollow area 31 shown in fig. 3 is schematically shown from a micro level, the hollow area in the secondtouch electrode block 12 shown in fig. 2 is schematically shown from a macro level, and the secondhollow area 32 shown in fig. 4 is schematically shown from a micro level. Onetouch electrode block 10 tends to cover a plurality of sub-pixels, and thus, the macro level herein refers to the magnitude of thetouch electrode block 10, and the micro level refers to the magnitude of the sub-pixels.

Alternatively, referring to fig. 2, 3 and 4, the touch display panel includes a plurality ofdata lines 42 and a plurality ofscan lines 41, the plurality ofdata lines 42 and the plurality ofscan lines 41 intersect to form a plurality ofpixel units 43, eachpixel unit 43 refers to a sub-pixel, and the plurality of sub-pixels may form one pixel. The extending directions of thetouch electrode lines 20 and the data lines 42 are the same, and the firsthollow areas 31 and the secondhollow areas 32 are located between twoadjacent scan lines 41. The overlapping positions of the touch electrode blocks 10 (i.e., the firsttouch electrode block 11 and the second touch electrode block 12) and thescanning lines 41 have no hollow area. Since the first hollow-outareas 31 and the second hollow-outareas 32 are located between twoadjacent scanning lines 41, thescanning lines 41 arranged along the extending direction of thetouch electrode line 20 divide the hollow-out area on the firsttouch electrode block 11 into a plurality of discrete first hollow-outareas 31, and thescanning lines 41 arranged along the extending direction of thetouch electrode line 20 divide the hollow-out area on the secondtouch electrode block 12 into a plurality of discrete second hollow-outareas 32. Since the material (e.g., the indium tin oxide material) of the firsttouch electrode block 11 exists between two adjacent firsthollow areas 31, the material of the firsttouch electrode block 11 existing between two adjacent firsthollow areas 31 can enhance the mechanical strength of the firsttouch electrode block 11. Since the material (e.g., the indium tin oxide material) of the secondtouch electrode block 12 exists between two adjacent secondhollow areas 32, the material of the secondtouch electrode block 12 existing between two adjacent secondhollow areas 32 can enhance the mechanical strength of the secondtouch electrode block 12.

Optionally, referring to fig. 2, fig. 3 and fig. 4, in a direction perpendicular to the extending direction of thetouch electrode line 20, the width of the firsthollow area 31 is D1, and the width of the firsthollow area 31 is a maximum distance between any two points on the edge of the firsthollow area 31 along the direction perpendicular to the extending direction of thetouch electrode line 20. In the extending direction perpendicular to thetouch electrode line 20, the width of the secondhollow area 32 is D2, and the width of the secondhollow area 32 is the maximum distance between any two points on the edge of the secondhollow area 32 along the extending direction perpendicular to thetouch electrode line 20. D1 and D2 satisfy: d1 ═ D2. In the extending direction of thetouch electrode line 20, the length of the firsthollow area 31 is H1, and the length of the firsthollow area 31 is the maximum distance between any two points on the edge of the firsthollow area 31 in the extending direction of thetouch electrode line 20. In the extending direction of thetouch electrode line 20, the length of the secondhollow area 32 is H2, and the length of the secondhollow area 32 is the maximum distance between any two points on the edge of the secondhollow area 32 in the extending direction of thetouch electrode line 20. H1 and H2 satisfy: h1 < H2. It should be noted that the shapes of the firsthollow area 31 and the secondhollow area 32 shown in the embodiment of the present invention are only an example, and in other embodiments, the firsthollow area 31 and the second hollow area may also have shapes such as an ellipse, a diamond, and the like, as long as the area of the firsthollow area 31 is smaller than the area of the secondhollow area 32.

Fig. 5 is another schematic enlarged structure diagram of an area S1 in fig. 1, fig. 6 is a schematic enlarged structure diagram of an area S4 in fig. 5, fig. 7 is a schematic cross-sectional structure along AA 'in fig. 6, fig. 8 is a schematic enlarged structure diagram of an area S5 in fig. 5, and fig. 9 is a schematic cross-sectional structure along BB' in fig. 8, referring to fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, where a hollow area is not located at an overlapping position of the firsttouch electrode block 11 and thetouch electrode line 20, and a hollow area is located at an overlapping position of the secondtouch electrode block 12 and thetouch electrode line 20. The area of the hollow in the firsttouch electrode block 11 is smaller than the area of the hollow in the secondtouch electrode block 12, so that the difference between the area of the firsttouch electrode block 11 and the area of the secondtouch electrode block 12 can be reduced, and the touch sensitivity of the touch display panel is improved.

Optionally, referring to fig. 6 and 7, a position of a vertical projection of the plurality oftouch electrode lines 20 overlapped with the firsttouch electrode block 11 on a plane where the firsttouch electrode block 11 is located is afirst area 51, and the firsttouch electrode block 11 has no hollow area in thefirst area 51. Referring to fig. 8 and 9, a position of a vertical projection of the at least onetouch electrode line 20 overlapped with the secondtouch electrode block 12 on a plane where the secondtouch electrode block 12 is located is asecond area 52, and the secondtouch electrode block 12 is provided with a thirdhollow area 33 at thesecond area 52. The thirdhollow area 33 in fig. 8 may be the same as the secondhollow area 32 in fig. 4, and the thirdhollow area 33 in fig. 8 may also be different from the secondhollow area 32 in fig. 4. In the implementation of the present invention, since there is no hollow area at the overlapping position of the firsttouch electrode block 11 and thetouch electrode line 20, the material of the firsttouch electrode block 11 is retained to the maximum, so that the area of the firsttouch electrode block 11 is increased to the maximum, the difference between the area of the firsttouch electrode block 11 and the area of the secondtouch electrode block 12 is reduced, and the touch sensitivity of the touch display panel is improved. It should be noted that the hollow-out area in the secondtouch electrode block 12 shown in fig. 5 is schematically shown from a macro scale, and the third hollow-outarea 33 shown in fig. 8 is schematically shown from a micro scale.

Optionally, as shown in fig. 5, 8, and 9, a third hollow-outarea 33 exists at a position where a vertical projection of any one of thetouch electrode lines 20 overlapped with the secondtouch electrode block 12 on a plane where the secondtouch electrode block 20 is located. Since the secondtouch electrode block 12 is hollowed out in the overlapping region with anytouch electrode line 20, the parasitic capacitance between thetouch electrode line 20 and the secondtouch electrode block 12 is reduced, and the load on thetouch electrode line 20 is reduced.

Alternatively, referring to fig. 6 and 8, the touch display panel includes a plurality ofdata lines 42 and a plurality ofscan lines 41, the plurality ofdata lines 42 and the plurality ofscan lines 41 intersect to form a plurality ofpixel units 43, eachpixel unit 43 refers to a sub-pixel, and the plurality of sub-pixels may form one pixel. The extending directions of thetouch electrode lines 20 and the data lines 42 are the same, and the thirdhollow areas 33 are located between two adjacent scanning lines 41. The secondtouch electrode block 12 has no hollow area at the overlapping position with thescanning line 41. Since the third hollow-outareas 33 are located between twoadjacent scanning lines 41, thescanning lines 41 arranged along the extending direction of thetouch electrode line 20 divide the hollow-out area on the secondtouch electrode block 12 into a plurality of discrete third hollow-outareas 33. Since the material (e.g., an indium tin oxide material) of the secondtouch electrode block 12 exists between two adjacent thirdhollow areas 33, the material of the secondtouch electrode block 12 existing between two adjacent thirdhollow areas 33 can enhance the mechanical strength of the secondtouch electrode block 12.

Alternatively, referring to fig. 6, 7, 8 and 9, the touch display panel includes a plurality ofdata lines 42 and a plurality ofscan lines 41, the plurality ofdata lines 42 and the plurality ofscan lines 41 intersect to form a plurality ofpixel units 43, eachpixel unit 43 refers to a sub-pixel, and the plurality of sub-pixels may form one pixel. The extending directions of thetouch electrode lines 20 and the data lines 42 are the same, and thetouch electrode lines 20 and the data lines 42 are disposed on the same layer. Thetouch electrode lines 20 and the data lines 42 are arranged on the same layer, and thetouch electrode lines 20 and the data lines 42 can be made of the same material and formed in the same process, so that the process is saved.

Alternatively, referring to fig. 1 to 9, the touch electrode block 10 (i.e., the firsttouch electrode block 11 and the second touch electrode block 12) is multiplexed as a common electrode. In the display stage, a display signal can be applied to thetouch electrode block 10, so that the touch display panel realizes light emitting display; in the touch stage, a touch signal may be applied to thetouch electrode block 10, so that the touch display panel realizes touch position detection. In the embodiment of the invention, thetouch electrode block 10 is reused as the common electrode, on one hand, as manufacturing processes do not need to be respectively arranged for the touch electrode block and the common electrode, the process is saved; on the other hand, the thickness of the touch display panel can be reduced, so that the touch display panel becomes thinner.

Exemplarily, referring to fig. 1 to 9, the touch electrode block 10 (i.e., the firsttouch electrode block 11 and the second touch electrode block 12) is multiplexed as a common electrode. The plurality of touch electrode blocks 10 are arranged on the same layer and are arranged in an array manner, the touch electrode blocks 10 are self-capacitance touch electrode blocks, each self-capacitance touch electrode block respectively forms a capacitor with, for example, a zero potential energy point ground, when a finger touches or is close to the display panel, the capacitance value at the touch position is increased, and then when touch detection is performed, the position of the touch point can be determined by detecting the change of the corresponding capacitance value. In other embodiments, thetouch electrode block 10 may also be a mutual capacitance type touch electrode block.

Exemplarily, referring to fig. 6, 7, 8 and 9, the touch display panel further includes anopposite substrate 82 and color resistance layers 84 located on one side of theopposite substrate 82 close to thesubstrate 60, ablack matrix 83 is further disposed between two adjacent color resistance layers 84, and a vertical projection of the data lines 42 and thetouch electrode lines 20 on theopposite substrate 82 is located within a vertical projection of theblack matrix 83 on theopposite substrate 82. The touch display panel further includes aliquid crystal layer 81, and theliquid crystal layer 81 is located between thesubstrate base plate 60 and theopposite base plate 82. Theliquid crystal layer 81 includes a plurality of liquid crystal molecules. In the embodiments of the present invention, the liquid crystal display panel is taken as an example, but not limited thereto, and in other embodiments, the touch display panel may also be an organic light emitting display panel.

Fig. 10 is a schematic cross-sectional structure view along CC' in fig. 8, referring to fig. 5, 8 and 10, thetouch electrode line 20 includes a touch electrode linemain body portion 21 and a touch electrodeline protrusion portion 22, an extending direction of the touch electrode linemain body portion 21 is an extending direction of thetouch electrode line 20, the touch electrodeline protrusion portion 22 is electrically connected to the touch electrode linemain body portion 21, the touch electrodeline protrusion portion 22 and the touch electrode linemain body portion 21 may be made of the same material and integrally formed in the same process, and the touch electrodeline protrusion portion 22 protrudes from the touch electrode linemain body portion 21 toward thepixel electrode 44. The touchelectrode line protrusion 22 is electrically connected to the corresponding touch electrode block 10 (exemplified by the secondtouch electrode block 12 in fig. 10) through theconnection hole 70, so as to electrically connect thetouch electrode block 10 to thetouch electrode line 20.

Alternatively, referring to fig. 1 to 9, the touch electrode block 10 (including the firsttouch electrode block 11 and the second touch electrode block 12) is provided with a fourthhollow area 34 in an area overlapping with thepixel electrode 44. The fourthhollow area 34 overlaps thepixel electrode 44, and the fourthhollow area 34 does not overlap thetouch electrode line 20. Thetouch electrode block 10 is reused as a common electrode, and thetouch electrode block 10 provided with the fourthhollow area 34 may form a transverse electric field with thepixel electrode 44 and drive the liquid crystal molecules to rotate. In the embodiments of the present invention, the hollow area of thetouch electrode block 10 does not include the area of the fourthhollow area 34. In other embodiments, the fourth hollow-outregion 34 may not be disposed in the area where thetouch electrode block 10 overlaps thepixel electrode 44.

Fig. 11 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 11, each firsttouch electrode block 11 is electrically connected to at least twotouch electrode lines 20, and each secondtouch electrode block 12 is electrically connected to at least onetouch electrode line 20. Since the overlapping area of the firsttouch electrode block 11 and the plurality oftouch electrode lines 20 is a first area, the overlapping area of the secondtouch electrode block 12 and the plurality oftouch electrode lines 20 is a second area, the first area is larger than the second area, the parasitic capacitance of the firsttouch electrode block 11 and thetouch electrode lines 20 is larger than the parasitic capacitance of the secondtouch electrode block 12 and thetouch electrode lines 20, the firsttouch electrode block 11 increases the load on thetouch electrode lines 20 more, and the secondtouch electrode block 12 increases the load on thetouch electrode lines 20 less. In the embodiment of the present invention, each firsttouch electrode block 11 is electrically connected to at least twotouch electrode lines 20, the at least twotouch electrode lines 20 are connected in parallel and provide a touch signal or a display signal for the same firsttouch electrode block 11, and the at least two paralleltouch electrode lines 20 have a smaller resistance relative to a singletouch electrode line 20, so that a load increase on thetouch electrode lines 20 caused by the firsttouch electrode block 11 is reduced.

Fig. 12 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 12, eachtouch electrode line 20 is electrically connected to a correspondingtouch electrode block 10 through a plurality of connection holes 70. Since thetouch electrode block 10 has a certain resistance, the touch signals or display signals on thetouch electrode line 20 are transmitted to different parts of the sametouch electrode block 10 by a connectinghole 70 along different paths, and the resistances are different. In the embodiment of the present invention, eachtouch electrode line 20 is electrically connected to the correspondingtouch electrode block 10 through the plurality of connection holes 70, and the touch signals or the display signals on thetouch electrode lines 20 are transmitted to different parts of the sametouch electrode block 10 through the plurality of connection holes 70, so that the resistances of the touch signals or the display signals transmitted to different parts of the sametouch electrode block 10 are equalized, thereby improving the touch sensitivity. When thetouch electrode block 10 is multiplexed as a common electrode, the arrangement can also make a plurality of sub-pixels covered by the sametouch electrode block 10 have the same common voltage, so that the display of the plurality of sub-pixels is more uniform.

Alternatively, referring to fig. 1, 11 and 12, the firsttouch electrode block 11 is located at an end of a row of touch electrode blocks 10 arranged perpendicular to an extending direction of the touch electrode lines 20. In a row of touch electrode blocks 10 arranged along the extending direction of thetouch electrode line 20, the maximum distance between thetouch electrode line 20 electrically connected to the firsttouch electrode block 11 and the display center line L of the touch display panel is L1. The minimum distance between thetouch electrode line 20 electrically connected to the secondtouch electrode block 12 and the display center line L of the touch display panel is L2. The touch display panel displays that the central line L is parallel to the extending direction of thetouch electrode line 20, and L1< L2. Eachtouch electrode line 20 may be electrically connected to a correspondingtouch electrode block 10 through aconnection hole 70. Perpendicular to the extending direction of thetouch electrode line 20, the distance between the perpendicular projection of the connectinghole 70 on the firsttouch electrode block 11 and the first special-shaped edge P1 is relatively long, so that the adverse effect of the shape of the first special-shaped edge P1 on the transmission of the touch signal or the display signal is avoided, the resistance of the touch signal or the display signal transmitted to different parts of the same firsttouch electrode block 11 is balanced, and the touch sensitivity is improved.

Fig. 13 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 13, eachtouch electrode line 20 is electrically connected to the correspondingtouch electrode block 10 through aconnection hole 70, the connection holes 70 on two sides of the display center line L of the touch display panel are symmetrical with respect to the display center line L of the touch display panel, and the display center line L of the touch display panel is parallel to the extending direction of thetouch electrode line 20. Exemplarily, referring to fig. 13, oneconnection hole 70 is located at one side of the display center line L of the touch display panel, and oneconnection hole 70 is located at the other side of the display center line L of the touch display panel and is axisymmetric with respect to the display center line L of the touch display panel.

Alternatively, referring to fig. 1, 11, 12 and 13, the number oftouch electrode lines 20 overlapping one firsttouch electrode block 11 is M, and the number oftouch electrode lines 20 overlapping one secondtouch electrode block 12 is N, where M is N (exemplary M is N is 6 in the embodiment of the present invention). The larger the number of thetouch electrode lines 20 overlapped with thetouch electrode block 10 is, the larger the parasitic capacitance generated by the overlap of thetouch electrode block 10 and thetouch electrode lines 20 is, the larger the load on thetouch electrode lines 20 is, and likewise, the larger the load on thetouch electrode block 10 is. In the embodiment of the present invention, by setting the number of thetouch electrode lines 20 overlapped with one firsttouch electrode block 11 to be equal to the number of thetouch electrode lines 20 overlapped with one secondtouch electrode block 12, the load on the firsttouch electrode block 11 is consistent with the load on the secondtouch electrode block 12, thereby improving the touch sensitivity. When thetouch electrode block 10 is multiplexed as a common electrode, the arrangement can also make a plurality of sub-pixels covered by the sametouch electrode block 10 have the same common voltage, so that the display of the plurality of sub-pixels is more uniform.

Fig. 14 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 14, the touch display panel further includes asubstrate 60, and the touch electrode blocks 10 and thetouch electrode lines 20 are located on one side of thesubstrate 60. Thetouch electrode line 20 may be located between thesubstrate base plate 60 and thetouch electrode block 10. In the light emitting direction away from the touch display panel, thesubstrate base plate 60 includes afirst corner 61, asecond corner 62, a third corner 63 and afourth corner 64 which are arranged clockwise, and thefirst corner 61 and thesecond corner 62 are arc-shaped corners. The arc corners may be, for example, arc chamfers. The corner in the embodiment of the present invention refers to a connection portion between adjacent two straight edges of thesubstrate base plate 60.

Optionally, the touch display panel may further include anintegrated circuit 90, thetouch electrode line 20 is electrically connected to theintegrated circuit 90, and theintegrated circuit 90 provides a touch signal to thetouch electrode block 10 electrically connected to thetouch electrode line 20 through thetouch electrode line 20. When thetouch electrode block 10 is reused as a common electrode, theintegrated circuit 90 may further provide a display signal to thetouch electrode block 10 electrically connected to thetouch electrode line 20 through thetouch electrode line 20. Theintegrated circuit 90 may be located between the third corner 63 and thefourth corner 64, theintegrated circuit 90 being located on a side of the display area remote from thefirst corner 61 and thesecond corner 62.

Fig. 15 is a schematic top view of another touch display panel according to an embodiment of the present invention, and referring to fig. 15, the touch display panel further includes asubstrate 60, and the touch electrode blocks 10 and thetouch electrode lines 20 are located on one side of thesubstrate 60. Thetouch electrode line 20 may be located between thesubstrate base plate 60 and thetouch electrode block 10. In the light emitting direction away from the touch display panel, thesubstrate base plate 60 includes afifth corner 65, asixth corner 66, aseventh corner 67 and aneighth corner 68 which are arranged clockwise, and thefifth corner 65 and thesixth corner 66 are arc-shaped corners. The arc corners may be, for example, arc chamfers. The corner in the embodiment of the present invention refers to a connection portion between adjacent two straight edges of thesubstrate base plate 60. Thebase substrate 60 further comprises a second shaped edge P2, the second shaped edge P2 being the portion of thebase substrate 60 between thefifth corner 65 and thesixth corner 66 that is convex towards the display area. The display area edge P is convex toward the display area at the second contour P2 and forms another first contour P1 in conformity with the shape of the second contour P2. The touch display panel may further include anintegrated circuit 90, thetouch electrode line 20 is electrically connected to theintegrated circuit 90, and theintegrated circuit 90 provides a touch signal to thetouch electrode block 10 electrically connected to thetouch electrode line 20 through thetouch electrode line 20. When thetouch electrode block 10 is reused as a common electrode, theintegrated circuit 90 may further provide a display signal to thetouch electrode block 10 electrically connected to thetouch electrode line 20 through thetouch electrode line 20. Theintegrated circuit 90 is located between theseventh corner 67 and theeighth corner 68, and theintegrated circuit 90 is located on a side of the display area remote from thefifth corner 65 and thesixth corner 66.

Fig. 16 is a partial structure plan view of a touch display panel according to an embodiment of the invention, and fig. 17 is a schematic cross-sectional structure view along DD' in fig. 16, in which a touch electrode block 10 (thetouch electrode block 10 is exemplified as the firsttouch electrode block 12 in fig. 16 and fig. 17) is located on a side of theopposite substrate 82 close to thesubstrate 60, and thetouch electrode block 10 is located between theopposite substrate 82 and the liquid crystal layer. Thetouch electrode block 10 is not provided with the fourthhollow area 34 in the area overlapped with thepixel electrode 44. Thetouch electrode block 10 is reused as a common electrode, and thetouch electrode block 10 and thepixel electrode 44 may form a longitudinal electric field and drive the liquid crystal molecules to rotate.

The embodiment of the invention also provides a display device. Fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 18, the display device includes any one of thetouch display panels 100 according to the embodiment of the present invention. The display device can be a mobile phone, a tablet computer, an intelligent wearable device and the like.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles 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.