CN112639697A

CN112639697A - Touch display panel and touch display device

Info

Publication number: CN112639697A
Application number: CN201880094122.8A
Authority: CN
Inventors: 林源城; 李东霖; 苏伟盛; 施文杰
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2021-04-09
Also published as: WO2020047712A1

Abstract

The invention provides a touch display panel (10), wherein a plurality of spaced fractures are arranged on part of first electrode wires (21) and/or part of second electrode wires (22) of touch layers (20,40) of the touch display panel (10), so that the number of nodes between the first electrode wires (21) and the second electrode wires (22) is reduced, the node capacitance is reduced, the background capacitance value Cm is reduced, the ratio of an induction change capacitance value delta Cm to the background capacitance value Cm is increased, and the touch display panel has a good touch effect.

Description

Touch display panel and touch display device

Technical Field

The present invention relates to touch control and display technologies, and in particular, to a touch control display panel and a touch control display device.

Background

In the prior art, a touch layer is generally mounted on a display panel to obtain a touch display panel, so that the touch display panel simultaneously realizes display and touch functions. In order to achieve a better touch effect, the touch display panel is required to have a smaller background capacitance Cm and a larger sensing variation capacitance Δ Cm, i.e., the larger the Δ Cm/Cm is, the better the value is.

Disclosure of Invention

The invention provides a touch display panel with a good touch effect and touch display equipment.

The touch display panel comprises a display panel and a touch layer which are arranged in a stacked mode; the display panel comprises a plurality of light emitting units arranged in an array; the touch layer comprises a plurality of first electrode wires and a plurality of second electrode wires, a plurality of pixel areas are formed by the projection of the first electrode wires and the projection of the second electrode wires on the display panel, each pixel area covers one or more light-emitting units, and at least part of the pixel areas are provided with notches.

The touch display device comprises a device main body and the touch display panel connected with the device main body.

According to the touch display panel provided by the invention, the pixel electrode surrounded by the first electrode wire and the second electrode wire is provided with the notch, so that the number of nodes between the first electrode wire and the second electrode wire is reduced, the node capacitance is reduced, the background capacitance value Cm is further reduced, the ratio of the induction change capacitance value delta Cm to the background capacitance value Cm is increased, and the touch display panel has a good touch effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic structural diagram of a touch layer according to an embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of the touch layer of the embodiment shown in FIG. 2;

FIG. 4 is another schematic cross-sectional view of the touch layer of the embodiment shown in FIG. 2;

FIG. 5 is an enlarged schematic view of a position I of the touch layer of the embodiment shown in FIG. 2;

FIG. 6 is an enlarged view of the position of the conductive bridges of the touch layer of the embodiment of FIG. 2 in a direction perpendicular to the touch layer;

FIG. 7 is an enlarged schematic view of position II of the touch layer of the embodiment shown in FIG. 2;

FIG. 8 is a schematic cross-sectional view of a touch display panel according to another embodiment of the invention;

FIG. 9 is a view of the touch layer of the embodiment of FIG. 8 in a direction perpendicular to the touch layer;

FIG. 10 is a view of another structure of the touch layer of the embodiment shown in FIG. 8, which is perpendicular to the direction of the touch layer;

FIG. 11 is a schematic cross-sectional view of a touch display panel according to another embodiment of the invention;

FIG. 12 is a view of the touch layer of the embodiment of FIG. 10 in a direction perpendicular to the touch layer;

fig. 13 is a schematic cross-sectional view of a connecting wire according to an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a touch display device which can perform picture display and touch operation. The touch display device can be any touch display device such as a mobile phone and an operation display screen. The touch display device comprises a device main body and a touch display panel connected with the device main body.

Referring to fig. 1, the present invention provides a touch display panel 100, wherein the touch display panel 100 includes a display panel 10 and a touch layer. The touch layer is stacked on the display panel 10 or embedded in the display panel 10. The display panel 10 includes a substrate 11, and an anode layer 12, a light-emitting layer 13, and a cathode layer 14 stacked on the substrate 11. The light emitting layer 13 includes a plurality of light emitting units 131 arranged in an array, each of the light emitting units 131 is provided with a light emitting material, so that each of the light emitting units 131 emits light of different colors, and the touch display panel 100 can perform different image displays. In this embodiment, two adjacent light emitting units 131 are spaced apart from each other.

The touch layer comprises a plurality of first electrode wires arranged in parallel at intervals and a plurality of second electrode wires arranged in parallel at intervals, and the first electrode wires and the second electrode wires are arranged in a crossed mode. It can be understood that, in other embodiments, the plurality of first electrode lines or the plurality of second electrode lines may not be parallel, and the electrode lines arranged in parallel in this embodiment can obtain a better touch effect and facilitate production. In this application, first electrode line extends along first direction, second electrode line extends along the second direction, first direction with the second direction is crossing. Any two adjacent first electrode lines and two adjacent second electrode lines enclose a pixel area, each pixel area corresponds to one light-emitting unit 131 or a group of light-emitting units formed by a plurality of light-emitting units 131, that is, each light-emitting unit 131 or each group of light-emitting units is located in a pixel area formed by intersecting the first electrode lines and the second electrode lines. The first electrode wire and the second electrode wire correspond to two adjacent light-emitting units, so that the first electrode wire and the second electrode wire are prevented from shielding the light-emitting units, and the display effect of the touch display panel 100 is guaranteed.

Furthermore, a plurality of fractures arranged at intervals are arranged on part of the first electrode wire and/or part of the second electrode wire, so that part of the pixel area is provided with a gap, and a non-closed pixel area is formed. In addition, in the invention, the fracture of each electrode wire (including the first electrode wire and the second electrode wire) with the fracture divides each electrode wire into a plurality of sections of sub-electrode wires. In the invention, each section of the sub-electrode wire is connected with a continuous (i.e. without fracture) electrode wire, thereby ensuring that electric signals can be transmitted to the sub-electrode wire through the continuous electrode wire.

According to the invention, the plurality of spaced fractures are arranged on part of the first electrode wires and/or part of the second electrode wires of the touch layer, so that the background capacitance value Cm of the touch layer is reduced, the ratio of the induction change capacitance value delta Cm to the background capacitance value Cm is increased, and the touch display panel 100 has a good touch effect.

Further, in the present application, a fracture is provided on a portion of the first electrode line and/or a portion of the second electrode line, so that at least a portion of the pixel region is a non-closed region. Compared with the case that each pixel region in the prior art is a closed region, because each pixel region in the present application is a non-closed region, that is, the first electrode lines and the second electrode lines do not need to completely close the pixel region, the areas of the first electrode lines and the second electrode lines can be reduced, and further the capacitance load between the first electrode lines and the cathodes of the display panel 10 is reduced, that is, the background capacitance value Cm is reduced, and the number of nodes between the first electrode lines and the second electrode lines can be reduced, so that the background capacitance value Cm is further reduced, the ratio of the induction change capacitance value Δ Cm to the background capacitance value Cm is further increased, and the touch display panel 100 has a better touch effect.

The present application will be described with reference to several embodiments.

Referring to fig. 1 again, in the present embodiment, the touch layer 20 is stacked on the display panel 10. Specifically, the touch layer 20 is stacked on the cathode layer 14 of the display panel 10. And a packaging layer 15 is further disposed between the cathode layer 14 and the touch layer 20, and is used for protecting the display panel 10 and preventing water, oxygen and the like from entering the display panel 10 to affect the light emission of the display panel 10. The anode layer 12 includes a plurality of anodes 121 arranged at intervals in an array, and each of the anodes 121 corresponds to one of the light emitting cells 131. The cathode layer 14 is a complete planar structure. A control layer 16 is further disposed between the substrate 11 and the anode 121 layer 12, the control layer 16 includes a plurality of thin film transistors arranged in an array, each of the thin film transistors is electrically connected to one of the anodes 121 to control a potential difference between each of the anodes 121 and the cathode, so as to control a light emitting brightness of each of the light emitting units 131 between each of the anodes 121 and the cathode layer 14, thereby implementing different image displays.

It is understood that in other embodiments, the touch layer 20 may be disposed between the encapsulation layer 15 and the substrate 10. Specifically, the cathode layer 14 and/or the anode layer 12 are patterned, that is, the cathode layer 14 includes a plurality of arrays of spaced cathodes and/or the anode layer 12 includes a plurality of arrays of spaced anodes, and adjacent cathodes or adjacent anodes are spaced by a gap. The electrode lines (including the first electrode lines 21 and/or the second electrode lines 22) of the touch layer 20 are arranged in the gaps between the adjacent cathodes and/or the adjacent anodes 121.

Referring to fig. 2 and fig. 3, the touch layer 20 of the present embodiment includes a plurality of first electrode chains 20a arranged at intervals and a plurality of second electrode chains 20b arranged at intervals. The second electrode chain 20b is arranged to cross and insulate the first electrode chain 20 a. In this embodiment, the second electrode chain 20b is perpendicular to the first electrode chain 20 a.

Each first electrode chain 20a includes a plurality of spaced first electrodes 201, and two adjacent first electrodes 201 are electrically connected by a connecting segment 202. In this embodiment, the first electrodes 201 are diamond-shaped, and the connecting segment 202 is connected to one corner of two adjacent first electrodes 201. It is understood that the first electrode 201 may have other shapes such as a square shape, a triangular shape, etc. according to actual needs. The first electrode 201 and the connecting segment 202 are located at the same layer.

Each of the second electrode chains 20b includes a plurality of spaced second electrodes 203, and the first electrode 201 and the second electrode 203 are located on the same layer and are obtained by the same process as the first electrode 201. Two adjacent second electrodes 203 are electrically connected by a conductive bridge 204, and the conductive bridge 204 spans the connecting segment 202 and is insulated from the connecting segment 202 by an insulating layer 25. In other words, the conductive bridge 204 and the connection segment 202 are located at different layers, and two ends of the conductive bridge 204 are respectively connected to two adjacent second electrodes 203 through vias. Referring to fig. 4, in other embodiments of the present invention, the connecting segment 202 may also be closer to the display panel 10 than the conductive bridge 204.

In this embodiment, the second electrodes 203 are rhombuses having the same shape and size as the first electrodes 201, and any two adjacent first electrodes 201 and any two adjacent second electrodes 203 are crossed to form a large rhombus structure. The adjacent first electrode 201 and the second electrode 203 are separated and insulated by an insulating layer 205, and the first electrode 201, the second electrode 203 and the insulating layer 205 therebetween form a capacitor. When any position of the touch layer 20 is touched, the capacitance of the touch position changes, and the touch position is obtained by detecting the change of the capacitance, so that the touch function is realized.

In addition, referring to fig. 2 and fig. 5, in the present embodiment, the first electrode 201, the connecting section 202, the second electrode 203, and the conductive bridge 204 are all a grid structure formed by intersecting a plurality of first electrode lines 21 arranged at intervals and a plurality of second electrode lines 22 arranged at intervals. The grid of the grid-like structure is the pixel region 23 of this embodiment. In this embodiment, the structures formed in the same layer are obtained by the same process, so that the processes of the touch display panel 100 are reduced as much as possible. In other words, the first electrode 201, the connecting segment 202, and the second electrode 203 of the present embodiment are obtained by the same process. It should be emphasized that the first electrode lines 21 and the second electrode lines 22 in fig. 5 are both straight lines, and the grid formed by the intersection of the first electrode lines 21 and the second electrode lines 22 is a diamond shape. It is emphasized that the drawings are only schematic, and in fact, the first electrode wires 21 and the second electrode wires 22 of the present application may be wavy wires or other non-straight lines, so as to form the grids with different shapes.

Further, in this embodiment, the first electrode lines 21 are all continuous lines, and the second electrode lines 22 include continuous lines 221 and fracture lines 222 that are alternately arranged. The continuous line is an electrode line without a fracture 24, and the fracture line is an electrode line with a plurality of fractures 24 arranged at intervals. In this embodiment, a distance between two adjacent fractures 24 is smaller than a length of a side of the pixel region 23 parallel to the second electrode line 22, so that a fracture 24 is disposed on the side of each pixel region 23 to obtain the non-closed pixel region 23. It can be understood that the first electrode lines 21 may also include continuous lines and broken lines that are alternately disposed, so as to further reduce the capacitive load between the touch layer 20 and the cathode layer 14 of the display panel 10, so as to further reduce the background capacitance value Cm, further increase the ratio of the induced change capacitance value Δ Cm to the background capacitance value Cm, and improve the touch effect of the touch display panel 100.

Referring to fig. 6, in the present embodiment, the first electrode lines 21 and the second electrode lines 22 forming the conductive bridge 204 and the first electrode lines 21 and the second electrode lines 22 forming the connection segment 202 are staggered in a direction perpendicular to the touch layer 20. The first electrode lines 21 and the second electrode lines 22 of the conductive bridge 204 are not overlapped with the first electrode lines 21 and the second electrode lines 22 of the connecting section 202, so that the capacitance load between the conductive bridge 204 and the connecting section 202 is reduced, the background capacitance value Cm is further reduced, the ratio of the induction change capacitance value Δ Cm to the background capacitance value Cm is increased, and the touch effect of the touch display panel 100 is improved.

Further, two adjacent second electrodes 203 are electrically connected through one or more conductive bridges 204 arranged at intervals. In this embodiment, two adjacent second electrodes 203 are electrically connected through a plurality of conductive bridges 204 arranged at intervals, and compared with a manner of connecting two adjacent second electrodes 203 through one conductive bridge 204 in the prior art, since the region where the conductive bridge 204 is arranged is limited, the total area of the plurality of conductive bridges 204 arranged at intervals in the present application is smaller than the area of the conductive bridge 204 in the prior art, so as to reduce the capacitive load between the conductive bridge 204 and the connecting section 202 and between the first electrode 201 and the second electrode 203, thereby reducing the background capacitance value Cm, improving the ratio of the induction change capacitance value Δ Cm to the background capacitance value Cm, and improving the touch effect of the touch display panel 100.

Further, referring to fig. 7, in the present embodiment, the edges of the first electrode 201 and the second electrode 203 are both tooth-shaped and are embedded with each other. Specifically, a plurality of protrusions 2011 are disposed on the edge of each of the first electrode 201 and the second electrode 203, and a notch 2012 is formed between two adjacent protrusions 2011. The protrusion 2011 of each first electrode 201 is opposite to the notch 2012 of the adjacent second electrode 203, and the notch 2012 of each first electrode 201 is opposite to the protrusion 2011 of the adjacent second electrode 203, so as to increase the effective mutual capacitance area between the first electrode 201 and the adjacent second electrode 203, increase the induced change capacitance value Δ Cm, further increase the value of Δ Cm/Cm, and improve the touch effect of the touch display panel 100. The protrusion 2011 and the notch 2012 may have any shape. For example, the protrusion 2011 and the notch 2012 may have a square, triangular, or semicircular shape. In this embodiment, the protrusion 2011 and the notch 2012 are square.

In this embodiment, the fractures 24 are disposed on the first electrode lines 21 and/or the second electrode lines 22, so as to reduce a capacitive load between the touch layer 20 and the cathode layer 14 of the display panel 10, thereby reducing the background capacitance Cm. Further, the first electrode lines 21 and the second electrode lines 22 of the conductive bridge 204 and the first electrode lines 21 and the second electrode lines 22 of the connecting section 202 are staggered in a direction perpendicular to the touch layer 20, so that a capacitance load between the conductive bridge 204 and the connecting section 202 is reduced, the background capacitance value Cm is further reduced, a ratio of the induction change capacitance value Δ Cm to the background capacitance value Cm is further improved, and the touch effect of the touch display panel 100 is improved. Further, the edges of the first electrode 201 and the second electrode 203 are configured to have a protrusion 2011 and a notch 2012, so as to increase an effective mutual capacitance area between the first electrode 201 and the second electrode 203, thereby increasing an induced change capacitance value Δ Cm, further increasing a value of Δ Cm/Cm, and improving a touch effect of the touch display panel 100.

In other embodiments of the present invention, the touch layer includes a first electrode layer and a second electrode layer insulated from the first electrode layer. The first electrode layer comprises a plurality of first electrode wires and/or second electrode wires, and the second electrode layer comprises a plurality of second electrode wires and/or first electrode wires. The first electrode wires and/or the second electrode wires of the first electrode layer and the second electrodes and/or the second electrode wires of the second electrode layer are intersected to form the pixel area. That is, the pixel region 23 is defined by the projections of the electrode lines of the first electrode layer and the electrode lines of the second electrode layer on the display panel 10.

Specifically, referring to fig. 8 and 9, in another embodiment of the present invention, the touch display panel 100 includes the display panel 10 and the touch layer 30. The structure of the display panel 10 is the same as that of the display panel 10 of the embodiment shown in fig. 1, and includes a substrate 11 and an encapsulation layer 15. The touch layer 30 includes a first electrode layer 31, a second electrode layer 33, and an insulating medium layer 32. The insulating medium layer 32 is disposed between the first electrode layer 31 and the second electrode layer 33, and is used for insulating the first electrode layer 31 from the second electrode layer 33. In this embodiment, the insulating medium layer 32 completely separates the first electrode layer 31 from the second electrode layer 33, and the first electrode layer 31 and the second electrode layer 33 are located on different layers and are respectively disposed on two sides of the insulating medium layer 32. In this embodiment, the touch layer 20 is disposed on the encapsulation layer 15 on the display panel 10, and the first electrode layer 31 is closer to the display panel 10 than the second electrode layer 33. It is understood that in other embodiments of the present invention, the second electrode layer 33 can be closer to the display panel 10 than the first electrode layer 31.

It is understood that, in other embodiments, the touch layer 30 may be disposed in the encapsulation layer 15. It is further understood that, in other embodiments, the touch layer 30 only includes the first electrode layer 31 and the second electrode layer 33, the first electrode layer 31 is disposed on the side of the encapsulation layer 15 away from the substrate 11, and the second electrode layer 33 is disposed between the encapsulation layer 15 and the substrate 11, so as to achieve insulation between the first electrode layer 31 and the second electrode layer 32.

The first electrode layer 31 includes a plurality of first electrode lines 311. The second electrode layer 33 includes a plurality of the first electrode lines 331 and a plurality of the second electrode lines 332. The first electrode lines 331 on the second electrode layer 33 are staggered from the first electrode lines 311 of the first electrode layer 31. Each of the pixel regions 23 is defined by a first electrode line 311 of the first electrode layer 31, a first electrode line 331 of the second electrode layer 33, and a second electrode line 332 of the second electrode layer 33. Each first electrode line 331 is provided with a plurality of fractures 34 arranged at intervals.

In this embodiment, since the first electrode lines and the second electrode lines that surround the pixel region 23 are both disposed in two different layers, the pixel region 23 is necessarily a non-closed structure. Compared with the existing touch layer with a closed pixel region 23, the background capacitance value Cm of the touch display panel 100 of the present application is reduced, so that the ratio of the sensing variation capacitance value Δ Cm to the background capacitance value Cm is increased, and the touch effect of the touch display panel 100 is improved. Specifically, in the embodiment, since the first electrode layer 31 only includes the first electrode line 311, compared to the case where the first electrode layer 31 includes both the first electrode line and the second electrode line, the capacitance load between the first electrode layer 31 and the second electrode layer 33 is reduced to reduce the background capacitance Cm; in addition, since the fracture 34 is formed on the first electrode line 331 of the second electrode layer 33, the number of nodes between the first electrode layer 31 and the electrode line of the second electrode layer 33 can be reduced, so as to further reduce the background capacitance value Cm, further improve the ratio of the induction change capacitance value Δ Cm to the background capacitance value Cm, and improve the touch effect of the touch display panel 100.

It is understood that, referring to fig. 10, in another embodiment of the present invention, on the basis of the embodiment shown in fig. 8, the first electrode layer 31 further includes a second electrode line 312, and the second electrode line 22 of the first electrode layer 31 is staggered from the second electrode line 22 of the second electrode layer 33. The pixel region 23 is defined by a first electrode line 311 of the first electrode layer 31, a second electrode line 312 of the first electrode layer 31, a first electrode line 331 of the second electrode layer 33, and a second electrode line 332 of the second electrode layer 33. Furthermore, a plurality of fractures 34 may be disposed on the second electrode line 22 at intervals, so that the capacitive load between the second electrode layer 33 and the cathode layer 14 of the display panel 10 is reduced.

In another embodiment of the present invention, the structure of the touch layer 20 is substantially the same as the structure of the touch layer 20 described in fig. 7 and 8, except that: in this embodiment, the electrode lines (including the first electrode line 311 and the second electrode line 312) of the first electrode layer 31 and the electrode lines (including the first electrode line 331 and the second electrode line 312) of the second electrode layer 33 are located in the same layer, the insulating medium layer 32 includes a plurality of blocks arranged in an array, and each block is located at a position where the electrode line of the first electrode layer 31 and the electrode line of the second electrode layer 33 intersect, so as to ensure that the electrode line of the first electrode layer 31 is insulated from the electrode line of the second electrode layer 33.

Referring to fig. 11, in another embodiment of the present invention, the touch display panel 100 includes the display panel 10 and a touch layer 40. The touch layer 40 includes a first electrode layer 41, a second electrode layer 43, and an insulating medium layer 42 located between the first electrode layer 41 and the second electrode layer 43, and is used for insulating the first electrode layer 41 and the second electrode layer 43.

Referring to fig. 12, the first electrode layer 41 includes a plurality of first electrode lines 411 arranged in parallel at intervals and a plurality of second electrode lines 412 arranged in parallel at intervals, and the first electrode lines 411 and the second electrode lines 22 are arranged in a crossing manner. In this embodiment, the first electrode lines 411 are perpendicular to the second electrode lines 412, and it is understood that the first electrode lines 411 and the second electrode lines 412 may be crossed at other angles.

The second electrode layer 43 includes a plurality of first electrode lines 431 and a plurality of second electrode lines 432 spaced in parallel. The first electrode lines 431 of the second electrode layer 43 and the first electrode lines 411 of the first electrode layer 41 extend in the same direction, and the first electrode lines 431 of the second electrode layer 43 and the first electrode lines 411 of the first electrode layer 41 are staggered in the direction perpendicular to the touch layer 20; the second electrode lines 432 of the second electrode layer 43 are staggered from the second electrode lines 412 of the first electrode layer 41, so that the capacitive load between the first electrode layer 41 and the second electrode layer 43 is reduced, and the background capacitance value Cm is reduced. In this embodiment, the first electrode lines 411 and the second electrode lines 412 of the first electrode layer 41 enclose the pixel region 23, and the first electrode lines 431 and the second electrode lines 432 of the second electrode layer 43 enclose the pixel region 23; in a direction perpendicular to the touch layer 40, the pixel area 23 surrounded by the first electrode lines 411 and the second electrode lines 412 of the first electrode layer 41 partially overlaps the pixel area 23 surrounded by the first electrode lines 431 and the second electrode lines 432 of the second electrode layer 42, and a portion of the first electrode layer 41 where the pixel area of the second electrode layer 42 overlaps covers one or more of the light-emitting units. In other words, the first electrode lines 411 of the first electrode layer 41 and the first electrode lines 431 of the second electrode layer 43 are located between two adjacent light-emitting units, and the second electrode lines 412 of the first electrode layer 41 and the second electrode lines 432 of the second electrode layer 43 are located between two adjacent light-emitting units, so that compared with the case where only the first electrode lines 411 or the second electrode lines 432 of the first electrode layer 41 are located between two adjacent light-emitting units, the sensing variation capacitance Δ Cm of the present application is increased, thereby further increasing the ratio of the sensing variation capacitance Δ Cm to the background capacitance Cm, and improving the touch effect of the touch display panel 100.

Further, in this embodiment, the first electrode line 411 of the first electrode layer 41 includes a continuous line 4111 and a broken line 4112 that are alternately arranged, and the second electrode lines 412 are all broken lines. The first electrode line 431 of the second electrode layer 43 includes a continuous line 4312 and a broken line 4311 which are alternately arranged, and the second electrode line 432 is a broken line. Wherein the continuous line is a continuous non-fracture electrode line, and the fracture line is an electrode line with a plurality of fractures 44 arranged at intervals. The distance between two adjacent fractures 44 of the first electrode line (the first electrode line 411 or the first electrode line 431) is the length of the parallel edge of the pixel area 23 and the first electrode line (the first electrode line 411 or the first electrode line 431), and the distance between two adjacent fractures 44 of the second electrode line (the second electrode line 412 or the second electrode line 432) is the length of N times of the parallel edge of the pixel area 23 and the second electrode line (the second electrode line 412 or the second electrode line 432), where N is a natural number greater than or equal to 1, so that at least part of the pixel area 23 is an unclosed area. The fracture 44 divides the electrode lines (including the first electrode line and the second electrode line) into a plurality of line segments arranged at intervals. In this embodiment, N is 2, the break in the second electrode line 412 of the first electrode layer 41 and the break 44 in the second electrode line 432 of the second electrode layer 43 are staggered, so that a line segment of the first electrode line having the break 44 and a line segment of the second electrode line having the break 44 in the same layer intersect to form an "L" -shaped structure, and the "L" -shaped structure of the first electrode layer 41 and the "L" -shaped structure of the second electrode layer 43 are arranged in a mirror image manner and slightly staggered. It is understood that the second electrode lines (the second electrode lines 412 or the second electrode lines 432) may be continuous lines or partially continuous lines.

In this embodiment, the electrode lines (including the first electrode lines and the second electrode lines) on the first electrode layer 41 and the second electrode layer 43 are provided with the fractures 44, so that each of the pixel regions 23 is in an unclosed state, and compared with the prior art, the capacitance load between the touch layer 40 and the cathode layer 14 of the display panel 10 is reduced, thereby reducing the background capacitance Cm. In addition, by providing the fractures 24 in the electrode lines on both the first electrode layer 41 and the second electrode layer 43, the number of nodes between the electrode lines of the first electrode layer 41 and the second electrode layer 43 is reduced as much as possible, so as to further reduce the background capacitance value Cm. Moreover, the first electrode lines 411 or the second electrode lines 432 of the first electrode layer 41 and the second electrode layer 43 are disposed between the same adjacent light emitting units, so as to increase the value of the induced change capacitance Δ Cm, further increase the ratio of the induced change capacitance Δ Cm to the background capacitance Cm, and improve the touch effect of the touch display panel 100.

Further, referring to fig. 2 again, in the present invention, the first electrode line and the second electrode line which are not provided with the fracture are electrically connected to the control chip 60 through the connection line 50. Referring to fig. 13, each of the connection lines 50 includes a first connection line 51 and a second connection line 52, and the second connection line 52 is stacked on the first connection line 51 and spaced apart from the second connection line 52. The first connection line 51 and the second connection line 52 are spaced apart by an insulating layer 53. The insulating layer is provided with a plurality of via holes 54 arranged at intervals, and the first connecting line 51 and the second connecting line 52 positioned at two sides of the insulating layer are electrically connected through the via holes 54.

The first connection line 51 and the second connection line 52 are connected by a plurality of via holes 54, which means that the first connection line 51 is divided into a plurality of first segments 511 and the second connection line 52 is divided into a plurality of second segments 521 by the plurality of via holes 54, and the first segments 511 and the second segments 521 are connected in parallel by the via holes 54 and then connected in series. Therefore, the resistance of each connecting line 50 is greatly reduced, so that the loss of the control signal of the control chip is reduced when the control signal passes through the connecting line 50, and the touch layer 20 is more sensitively controlled.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

A touch display panel is characterized by comprising a display panel and a touch layer which are arranged in a stacking mode; the display panel comprises a plurality of light emitting units arranged in an array; the touch layer comprises a plurality of first electrode wires and a plurality of second electrode wires, a plurality of pixel areas are formed by the projection of the first electrode wires and the projection of the second electrode wires on the display panel, each pixel area covers one or more light-emitting units, and at least part of the pixel areas are not closed.
The touch display panel according to claim 1, wherein a gap is formed between two adjacent light emitting units, and the first electrode lines and the second electrode lines correspond to the gap position.
The touch display panel of claim 1, wherein the break is disposed on the first electrode line and/or the second electrode line surrounding the pixel area, so that at least a portion of the pixel area is not closed.
The touch display panel of claim 3, wherein the first electrode line or the second electrode line with the break forms a plurality of sub-electrode lines, and each sub-electrode line is electrically connected to the second electrode line or the first electrode line without the break.
The touch display panel according to claim 1, wherein the touch layer comprises:

a plurality of first electrode chains and a plurality of second electrode chains which are arranged in an insulating manner;

each first electrode chain comprises a plurality of electrically connected first electrodes, and each first electrode comprises a pixel area enclosed by a plurality of first electrode wires and a plurality of second electrode wires;

each second electrode chain comprises a plurality of electrically connected second electrodes, and each second electrode comprises a pixel area enclosed by a plurality of first electrode wires and a plurality of second electrode wires.
The touch display panel according to claim 5, wherein the first electrode lines are continuous lines, and the second electrode lines comprise continuous lines and fracture lines which are alternately arranged; the continuous line is an electrode line without a fracture, and the fracture line is an electrode line with a fracture.
The touch display panel according to claim 5, wherein two adjacent first electrodes are electrically connected by a connecting segment; and the two adjacent second electrodes are electrically connected through a conductive bridge, and the conductive bridge is arranged on the connecting section in a spanning mode and is insulated from the connecting section.
The touch display panel according to claim 5, wherein the edges of the first electrode and the second electrode are tooth-shaped and are embedded with each other.
The touch display panel according to claim 1, wherein the touch layer includes a first electrode layer and a second electrode layer insulated from the first electrode layer, the first electrode layer includes a plurality of the first electrode lines and/or second electrode lines, and the second electrode layer includes a plurality of the second electrode lines and/or first electrode lines.
The touch display panel of claim 9, wherein the first electrode lines and/or the second electrode lines of the first electrode layer intersect with the second electrodes and/or the second electrode lines of the second electrode layer to form the pixel region.
The touch display panel according to claim 10, wherein the first electrode layer includes a plurality of the first electrode lines; the second electrode layer comprises a plurality of first electrode wires and a plurality of second electrode wires, the first electrode wires on the second electrode layer are staggered with the first electrode wires of the first electrode layer in the direction perpendicular to the touch layer, and each pixel region is formed by the first electrode wires of the first electrode layer, the first electrode wires of the second electrode layer and the second electrode wires of the second electrode layer in a surrounding mode; and each first electrode wire or second electrode wire of the second electrode layer is provided with a plurality of fractures arranged at intervals.
The touch display panel according to claim 10, wherein the first electrode layer and the second electrode layer each include a plurality of first electrode lines and second electrode lines; in a direction perpendicular to the touch layer, the first electrode wire and the second electrode wire on the second electrode layer are staggered with the first electrode wire and the second electrode wire of the first electrode layer, each pixel region is defined by the first electrode wire of the first electrode layer and the second electrode wire of the first electrode layer, the first electrode wire of the second electrode layer and the second electrode wire of the second electrode layer, a plurality of spaced fractures are arranged on the second electrode wire of the first electrode layer, and a plurality of spaced fractures are arranged on the first electrode wire or the second electrode wire of the second electrode layer.
The touch display panel of claim 9, wherein the first electrode lines and the second electrode lines of the first electrode layer define the pixel region, and the first electrode lines and the second electrode lines of the second electrode layer define the pixel region; in a direction perpendicular to the touch layer, the pixel area defined by the first electrode lines and the second electrode lines of the first electrode layer partially coincides with the pixel area defined by the first electrode lines and the second electrode lines of the second electrode layer.
The touch display panel of claim 13, wherein the partially overlapped pixel regions cover one or more of the light emitting units.
The touch display panel according to claim 13, wherein in a direction perpendicular to the touch layer, the first electrode lines of the second electrode layer are staggered from the first electrode lines of the first electrode layer, the second electrode lines of the second electrode layer are staggered from the second electrode lines of the first electrode layer, the first electrode lines of the first electrode layer and the first electrode lines of the second electrode layer are located between two adjacent light emitting units, and the second electrode lines of the first electrode layer and the second electrode lines of the second electrode layer are located between two adjacent light emitting units.
The touch display panel according to claim 13, wherein the first electrode lines of the first electrode layer comprise continuous lines and broken lines which are alternately arranged, and the second electrode lines are broken lines; the continuous line is an electrode line without a fracture, and the fracture line is an electrode line with a plurality of fractures arranged at intervals.
The touch display panel of claim 16, wherein a distance between two adjacent fractures of the first electrode line is a length of a side of the pixel region parallel to the first electrode line, and a distance between two adjacent fractures of the second electrode line is a length N times of the side of the pixel region parallel to the second electrode line, where N is a natural number greater than or equal to 1, so that at least a portion of the pixel region is a non-closed region.
The touch display panel according to claim 1, wherein the touch display panel comprises a control chip, and the continuous first electrode lines and the continuous second electrode lines are electrically connected to the control chip through connecting lines.
The touch display panel according to claim 18, wherein each of the connection lines includes a first connection line and a second connection line, the second connection line is stacked on the first connection line and spaced apart from the second connection line, a plurality of via holes are disposed between the first connection line and the second connection line, and the first connection line and the second connection line are electrically connected through the via holes.
A touch display device comprising a device body and the touch display panel of any one of claims 1 to 19 connected to the device body.