CN108958539B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN108958539B CN108958539B CN201810687544.8A CN201810687544A CN108958539B CN 108958539 B CN108958539 B CN 108958539B CN 201810687544 A CN201810687544 A CN 201810687544A CN 108958539 B CN108958539 B CN 108958539B
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- 238000005452 bending Methods 0.000 claims abstract description 74
- 239000000758 substrate Substances 0.000 claims abstract description 27
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 238000002834 transmittance Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
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- 230000000903 blocking effect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the invention provides a touch display panel and a touch display device, relates to the technical field of display, and aims to improve the bending performance of a touch electrode and further improve the working stability of the touch display panel. The touch display panel comprises a substrate, the substrate comprises a display area non-display area, the display area comprises a bending area, the non-display area comprises an upper non-display area and a lower non-display area, and a chip binding area is arranged in the lower non-display area; touch electrodes are arranged in the bending area, each touch electrode comprises a plurality of touch electrode blocks, and in one touch electrode, two adjacent touch electrode blocks are electrically connected through a connecting part; the display area is provided with a plurality of first touch signal lines, and at least part of the touch electrodes are connected with the first touch signal lines; the lower non-display area is provided with a plurality of second touch signal lines which are correspondingly connected with the first touch signal lines one by one, and the second touch signal lines are also connected with the chip binding area. The touch display panel is used for realizing image display.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a touch display panel and a touch display device.
[ background of the invention ]
With the continuous development of touch display technology and the diversified demands of users on touch display devices, foldable touch display panels are increasingly used.
A plurality of touch electrodes are arranged in a display area of the touch display panel, and each touch electrode is of a planar structure. However, for the foldable touch display panel, the touch electrode may be broken with the increase of the bending times, so that the touch electrode cannot accurately detect touch, which affects the normal operation of the touch display panel.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a touch display panel and a touch display device, so as to improve the bending performance of a touch electrode and further improve the working stability of the touch display panel.
In one aspect, an embodiment of the present invention provides a touch display panel, where the touch display panel includes a substrate, the substrate includes a display area and a non-display area surrounding the display area, the display area includes a bending area, the non-display area includes an upper non-display area and a lower non-display area, which are sequentially arranged in a column direction, and a chip binding area is disposed in the lower non-display area;
a plurality of touch electrodes are arranged in the bending area, each touch electrode comprises a plurality of touch electrode blocks, and any two adjacent touch electrode blocks in one touch electrode are electrically connected through at least one connecting part;
a plurality of first touch signal lines are arranged in the display area, and at least part of the touch electrodes are electrically connected with the first touch signal lines;
and a plurality of second touch signal lines which are connected with the first touch signal lines in a one-to-one correspondence manner are arranged in the lower non-display area, and the second touch signal lines are also connected with the chip binding area.
In another aspect, an embodiment of the present invention provides a touch display device, including the touch display panel.
One of the above technical solutions has the following beneficial effects:
compared with the prior art, in the technical scheme provided by the embodiment of the invention, each touch electrode comprises a plurality of touch electrode blocks, and two adjacent touch electrode blocks in each touch electrode are electrically connected through the connecting part, so that when the bending area of the touch display panel is bent on the premise of ensuring the conduction of signal paths between all the touch electrode blocks in each touch electrode, a plurality of touch electrode blocks arranged at intervals form stress dispersion points in one touch electrode, and each touch electrode block decomposes stress applied to the touch electrode during bending, thereby improving the bending resistance of the touch electrode, reducing the possibility of breakage of the touch electrode, and further improving the working stability of the touch display panel.
In addition, in the prior art, the signal lines connecting the touch electrodes and the chip bonding area extend from two sides of the non-display area to the chip bonding area, and in the technical scheme provided by the embodiment of the invention, the first touch signal lines electrically connected with the touch electrodes extend in the display area and are further electrically connected with the chip bonding area through the second touch signal lines arranged on the lower non-display area.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a top view of a touch display panel according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a touch electrode in a bending region according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a touch electrode in a bending region in a bending state according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a touch electrode in a bending region according to an embodiment of the invention;
fig. 5 is a schematic diagram illustrating the arrangement positions of the touch electrode blocks in the bending region according to the embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A1-A2 of FIG. 5;
fig. 7 is a schematic diagram illustrating a position of a first touch signal line according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a touch electrode in a non-bending region according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a touch electrode in a non-bending region according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a touch display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all 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 terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first and second may be used to describe the touch signal lines in the embodiments of the present invention, the touch signal lines should not be limited by these terms. These terms are only used to distinguish the touch signal lines from each other. For example, the first touch signal line may also be referred to as a second touch signal line, and similarly, the second touch signal line may also be referred to as a first touch signal line without departing from the scope of the embodiments of the present invention.
An embodiment of the present invention provides a touch display panel, as shown in fig. 1 and fig. 2, fig. 1 is a top view of the touch display panel provided in the embodiment of the present invention, fig. 2 is a schematic structural diagram of a touch electrode in a bending region provided in the embodiment of the present invention, the touch display panel includes a substrate 1, the substrate 1 includes a display region 2 and a non-display region 3 surrounding the display region 2, the display region 2 includes a bending region 4, the non-display region 3 includes an upper non-display region 5 and a lower non-display region 6 sequentially arranged in a column direction, wherein a chip bonding region 7 is disposed in the lower non-display region 6. A plurality of touch electrodes 8 are arranged in the bending region 4, each touch electrode 8 includes a plurality of touch electrode blocks 9, and in one touch electrode 8, any two adjacent touch electrode blocks 9 are electrically connected through at least one connecting portion 10.
A plurality of first touch signal lines 11 are arranged in the display area 2, and at least part of the touch electrodes 8 are electrically connected with the first touch signal lines 11; a plurality of second touch signal lines 12 connected with the plurality of first touch signal lines 11 in a one-to-one correspondence manner are arranged in the lower non-display area 6, and the plurality of second touch signal lines 12 are also connected with the chip binding area 7.
Compared with the prior art, in the touch display panel provided in the embodiment of the present invention, each touch electrode 8 includes a plurality of touch electrode blocks 9, and two adjacent touch electrode blocks 9 in each touch electrode 8 are electrically connected through the connection portion 10, on the premise that the signal path conduction between all the touch electrode blocks 9 in each touch electrode 8 is ensured, when the bending region 4 of the touch display panel is bent, the bending axis of the bending region 4 shown in fig. 2 extends along the row direction as an example, as shown in fig. 3, fig. 3 is a schematic structural diagram of the touch electrode in the bending region provided in the embodiment of the present invention, in one touch electrode 8, a plurality of touch electrode blocks 9 arranged at intervals form stress dispersion points, and each touch electrode block 9 decomposes the stress applied to the touch electrode 8 during bending, so as to improve the bending resistance of the touch electrode 8, the possibility of breakage of the touch electrode 8 is reduced, and the working stability of the touch display panel is improved.
In addition, in the prior art, the signal lines connecting the touch electrodes 8 and the chip bonding regions 7 extend from the two sides of the non-display region 3 to the chip bonding regions 7, and in the touch display panel provided in the embodiment of the present invention, the first touch signal lines 11 electrically connected to the touch electrodes 8 extend in the display region 2 and are further electrically connected to the chip bonding regions 7 through the second touch signal lines 12 disposed in the lower non-display region 6, so that, compared with the prior art, the touch display panel provided in the embodiment of the present invention does not need to provide signal lines for transmitting touch signals on the two sides of the non-display region 3, thereby reducing the frame width to a certain extent, and better realizing the narrow frame design of the touch display device.
Optionally, referring to fig. 1 again, when the touch display panel is a self-capacitance touch display panel, the self-capacitance touch display panel detects the touch position by detecting a change of a parasitic capacitance between the touch electrode 8 and the ground, in the bending region 4, the touch electrodes 8 are arranged in an insulated manner, and one touch electrode 8 is electrically connected to one first touch signal line 11.
Optionally, as shown in fig. 4, fig. 4 is another schematic structural diagram of the touch electrode in the bending region according to the embodiment of the present invention, when the touch display panel is a mutual capacitance type touch display panel, the touch electrode 8 includes a plurality of touch sensing electrodes 13 and a plurality of touch driving electrodes 14 that are arranged in an insulating manner, wherein the touch sensing electrodes 13 are arranged along a column direction and extend along a row direction, and the touch driving electrodes 14 are arranged along the row direction and extend along the column direction. Each touch sensing electrode 13 comprises a plurality of touch sensing electrode blocks 15, and in one touch sensing electrode 13, any two adjacent touch sensing electrode blocks 15 are electrically connected through at least one first connecting part 16; each touch drive electrode 14 comprises a plurality of touch drive electrode blocks 17, and in one touch drive electrode 14, any two adjacent touch drive electrode blocks 17 are electrically connected through at least one second connecting part 18; and, one touch sensing electrode 13 is electrically connected to one first touch signal line 11. When the touch display panel is a mutual capacitance type touch display panel, the mutual capacitance type touch display panel detects a touch position by detecting a mutual capacitance between the touch sensing electrode 13 and the touch driving electrode 14, that is, a change of a coupling capacitance.
As shown in fig. 5 and fig. 6, fig. 5 is a schematic diagram illustrating the arrangement positions of the touch electrode blocks in the bending region according to the embodiment of the invention, fig. 6 is a cross-sectional view taken along a direction a1-a2 in fig. 5, a plurality of sub-pixels 19 are disposed in the display region 2, each sub-pixel 19 includes a pixel defining layer 20, and each pixel defining layer 20 has an opening region 21. An interval area is arranged between two adjacent touch electrode blocks 9, and the orthographic projection of the interval area on the substrate base plate 1 does not overlap with the orthographic projection of the opening area 21 on the substrate base plate 1.
It can be understood that, referring to fig. 6 again, the sub-pixel 19 includes a pixel circuit 22, a light emitting element 23 and a pixel defining layer 20, wherein the light emitting element 23 includes an anode 24, a light emitting layer 25 and a cathode 26 sequentially disposed on a side of the pixel circuit 22 opposite to the substrate 1, the pixel defining layer 20 is disposed between the anode 24 and the cathode 26, and an opening area 21 of the pixel defining layer 20 corresponds to the anode 24 and the light emitting layer 25, and the area corresponds to a light emitting area of the sub-pixel 19.
It should be noted that, in order to avoid the touch electrode 8 from affecting the normal light emission of the sub-pixel 19, the touch electrode block 9 included in the touch electrode 8 is usually formed by a transparent material, but the touch electrode block 9 still shields the light emitted by the sub-pixel 19 by a small amount. If only a partial area of the opening area 21 of the sub-pixel 19 is shielded by the touch electrode block 9 and a partial area is not shielded by the touch electrode block 9, when the light emitted from the sub-pixel 19 exits through the opening area 21, the light can be emitted completely for the area of the opening area 21 not shielded by the touch electrode block 9, and the transmittance of the light can reach 100%. For the area of the opening area 21 blocked by the touch electrode block 9, the light is blocked for a small part, and the transmittance of the part of the light is only 90% or 80% for example. In this case, the sub-pixels 19 may have uneven light transmittance, and the color of the displayed screen may vary.
In the embodiment of the present invention, there is no overlap between the orthographic projection of the spacing region on the substrate base plate 1 and the orthographic projection of the opening region 21 on the substrate base plate 1, that is, the orthographic projection of the opening region 21 on the substrate base plate 1 is entirely located in the orthographic projection of the touch electrode block 9 on the substrate base plate 1, that is, the opening region 21 is entirely shielded by the touch electrode block 9, at this time, the light emitted from the opening region 21 of the sub-pixel 19 needs to pass through the touch electrode block 9, so that the light emitted from the opening region 21 can be ensured to be emitted with uniform transmittance, and the color of the displayed image is prevented from being deviated.
Further, referring to fig. 5 again, in order to avoid the connection portion 10 blocking the opening area 21 and further causing non-uniform transmittance of the light emitted from the opening area 21, there may be no overlap between the orthographic projection of the connection portion 10 on the substrate base plate 1 and the orthographic projection of the opening area 21 on the substrate base plate 1.
Further, as shown in fig. 7, fig. 7 is a schematic diagram of a setting position of the first touch signal line according to an embodiment of the present invention, in order to prevent the first touch signal line 11 from shielding the opening area 21 and further prevent the transmittance of the light emitted from the opening area 21 from being non-uniform, and further, there is no overlap between an orthographic projection of the first touch signal line 11 on the substrate base 1 and an orthographic projection of the opening area 21 on the substrate base 1.
It can be understood that, in the manufacturing process of the first touch signal line 11, there are inevitably factors such as misalignment, which cause the position of the first touch signal line 11 to deviate from its standard position, and optionally, the distance between the orthographic projection of the first touch signal line 11 and the edge of the opening area 21 closest to the first touch signal line 11 on the substrate 1 is L1, where L1 is greater than or equal to 2 μm. By setting the minimum value of L1 to 2 μm, even if the first touch signal line 11 is displaced from its standard value due to misalignment, the displaced first touch signal line 11 can be prevented from blocking the open area 21, thereby further ensuring uniformity of transmittance of light emitted from the open area 21.
Optionally, the bending region 4 has a bending axis, and an extending direction of the bending axis is parallel to an extending direction of the first touch signal line 11. For example, the extending direction of the bending axis and the extending direction of the first touch signal line 11 are both in the column direction. If the extending direction of the first touch signal line 11 is perpendicular to the extending direction of the bending axis, when the bending region 4 of the display panel is bent, the first touch signal line 11 is also bent, and thus there is a risk of breaking. By making the extending direction of the bending axis parallel to the extending direction of the first touch signal line 11, the first touch signal line 11 can be prevented from being bent along with the bending of the bending region 4, thereby preventing the first touch signal line 11 from being broken due to too many bending times.
Optionally, referring to fig. 2 again, in one touch electrode block 9, a plurality of touch electrode blocks 9 are arranged in multiple rows and multiple columns, the bending region 4 has bending axes, and the extending direction of the bending axes is the row direction or the column direction; in addition, in order to simplify the manufacturing process and ensure the arrangement regularity of the connection portions 10, the connection portions 10 between two adjacent touch electrode blocks 9 in the row direction may extend in the row direction, and the connection portions 10 between two adjacent touch electrode blocks 9 in the column direction may extend in the column direction.
Optionally, the display area 2 may include a non-bending area in addition to the bending area 4. For the non-bending region, since the region is not bent, as shown in fig. 8, fig. 8 is a schematic structural diagram of the touch electrode in the non-bending region provided in the embodiment of the present invention, and the touch electrode 8 in the non-bending region 27 may be an existing planar electrode structure. Alternatively, as shown in fig. 9, fig. 9 is another schematic structural diagram of the touch electrode in the non-bending region provided in the embodiment of the present invention, and with reference to fig. 2, to simplify the manufacturing process, the touch electrode 8 in the non-bending region 27 may also have the same structure as the touch electrode 8 in the bending region 4, that is, a plurality of touch electrodes 8 are disposed in the non-bending region 27, each touch electrode 8 includes a plurality of touch electrode blocks 9, and in one touch electrode 8, any two adjacent touch electrode blocks 9 are electrically connected through at least one connection portion 10.
When the touch electrode 8 of the non-bending region 27 also includes a plurality of touch electrode blocks 9, since the touch electrode blocks 9 of the non-bending region 27 do not need to be bent, the area of the touch electrode blocks 9 in the non-bending region 27 can be set larger to reduce the process complexity, and when the area of the touch electrode blocks 9 in the bending region 4 is S1 and the area of the touch electrode blocks 9 in the non-bending region 27 is S2, S2/S1 can be set to be 5 ≤ S2/S1 ≤ 20.
Optionally, referring to fig. 2 again, the shape of the touch electrode block 9 may be an equilateral quadrilateral, the length of the side of the touch electrode block 9 is L2, and L2 is less than or equal to 5 μm and less than or equal to 15 μm. The length of the side of the touch electrode block 9 is between 5 μm and 15 μm, so that the area of the touch electrode block 9 in the bending region 4 is small, that is, each touch electrode 8 includes a large number of touch electrode blocks 9, and when the bending region 4 is bent, the touch electrode blocks 9 can form a large number of stress dispersion points, thereby further improving the bending resistance of the touch electrode 8 and reducing the possibility of breakage of the touch electrode 8.
Optionally, the touch electrode block 9 is also rectangular, triangular or trapezoidal, and of course, may also be other regular or irregular polygons.
Optionally, in order to prevent the touch electrode block 9 from shielding light emitted by the sub-pixel 19, the touch electrode block 9 may be a transparent touch electrode block, and in order to reduce the surface resistance of the touch electrode 8, the connection portion 10 may be formed of a metal material with a lower surface resistance, that is, the connection portion 10 is a metal connection portion.
Specifically, the touch electrode block 9 is formed of indium tin oxide, indium zinc oxide, or indium gallium zinc oxide material, and based on a mature manufacturing process, not only can an electrode layer with good uniformity be formed, but also the touch electrode block 9 can have high light transmittance.
Specifically, the connection portion 10 may be formed of one or more materials of copper, silver, aluminum, and molybdenum. The connecting part 10 is formed by copper, silver, aluminum and molybdenum materials, so that the connecting part 10 can be ensured to have a low surface resistance value, and the surface resistance value of the touch electrode 8 is further reduced. For example, the metal ductility of the connection portion 10 may be greater than 3%, and the surface resistance may be between 0.001 Ω and 10 Ω.
As shown in fig. 10, fig. 10 is a schematic structural diagram of a touch display device according to an embodiment of the present invention, and the touch display device includes the touch display panel 100 according to the above description. The specific structure of the touch display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 10 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
Because the touch display device provided by the embodiment of the invention comprises the touch display panel, compared with the prior art, by adopting the touch display device, on one hand, each touch electrode comprises a plurality of touch electrode blocks, and two adjacent touch electrode blocks in each touch electrode are electrically connected through the connecting part, when the bending area of the touch display panel is bent, a plurality of touch electrode blocks arranged at intervals in one touch electrode form stress dispersion points, and each touch electrode block decomposes the stress applied to the touch electrode during bending, so that the bending resistance of the touch electrode is improved, the possibility of breakage of the touch electrode is reduced, and the working stability of the touch display device is improved. On the other hand, the first touch signal line electrically connected with the touch electrode extends in the display area, and then is electrically connected with the chip binding area through the second touch signal line arranged in the lower non-display area, so that signal lines for transmitting touch signals are not required to be arranged on two sides of the non-display area, the width of a frame is reduced to a certain extent, and the narrow frame design of the touch display device is better realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. The touch display panel is characterized by comprising a substrate base plate, wherein the substrate base plate comprises a display area and a non-display area surrounding the display area, the display area comprises a bending area, the non-display area comprises an upper non-display area and a lower non-display area which are sequentially arranged in the column direction, and a chip binding area is arranged in the lower non-display area;
a plurality of touch electrodes are arranged in the bending area, each touch electrode comprises a plurality of touch electrode blocks, and any two adjacent touch electrode blocks in one touch electrode are electrically connected through at least one connecting part;
a plurality of first touch signal lines are arranged in the display area, and at least part of the touch electrodes are electrically connected with the first touch signal lines;
a plurality of second touch signal lines which are correspondingly connected with the first touch signal lines one by one are arranged in the lower non-display area, and the second touch signal lines are also connected with the chip binding area;
a plurality of sub-pixels are arranged in the display area, each sub-pixel comprises a pixel defining layer, and each pixel defining layer is provided with an opening area;
a spacing area is arranged between every two adjacent touch electrode blocks, and the orthographic projection of the spacing area on the substrate does not overlap with the orthographic projection of the opening area on the substrate;
the display area further comprises a non-bending area, a plurality of touch electrodes are arranged in the non-bending area, each touch electrode comprises a plurality of touch electrode blocks, and any two adjacent touch electrode blocks in one touch electrode are electrically connected through at least one connecting part;
the area of the touch electrode block in the bending region is S1, the area of the touch electrode block in the non-bending region is S2, wherein S2/S1 is not less than 5 and not more than 20, the length of the edge of the touch electrode block is L2, and L2 is not less than 5 mu m and not more than 15 mu m.
2. The touch display panel according to claim 1, wherein an orthogonal projection of the connection portion on the base substrate does not overlap an orthogonal projection of the opening area on the base substrate.
3. The touch display panel of claim 1,
and the orthographic projection of the first touch signal line on the substrate base plate does not overlap with the orthographic projection of the opening area on the substrate base plate.
4. The touch display panel of claim 3, wherein the distance between the first touch signal line and the orthographic projection of the edge of the opening area closest thereto on the substrate is L1, and L1 is greater than or equal to 2 μm.
5. The touch display panel according to claim 1, wherein the bending region has a bending axis, and an extending direction of the bending axis is parallel to an extending direction of the first touch signal line.
6. The touch display panel according to claim 1, wherein in one of the touch electrode blocks, a plurality of the touch electrode blocks are arranged in a plurality of rows and a plurality of columns;
the bending area is provided with a bending shaft, and the extending direction of the bending shaft is the row direction or the column direction;
the connecting portion between two adjacent touch electrode blocks in the row direction extends along the row direction, and the connecting portion between two adjacent touch electrode blocks in the column direction extends along the column direction.
7. The touch display panel according to claim 1, wherein the touch electrode block has an equilateral quadrilateral shape.
8. The touch display panel according to claim 1, wherein the touch electrode block has a rectangular, triangular or trapezoidal shape.
9. The touch display panel according to claim 1, wherein the touch electrode block is a transparent touch electrode block, and the connecting portion is a metal connecting portion.
10. The touch display panel according to claim 9, wherein the touch electrode block is formed of an indium tin oxide, an indium zinc oxide, or an indium gallium zinc oxide material;
the connection portion is formed of one or more materials of copper, silver, aluminum, and molybdenum.
11. A touch display device comprising the touch display panel according to any one of claims 1 to 10.
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| CN201810687544.8A CN108958539B (en) | 2018-06-28 | 2018-06-28 | Touch display panel and touch display device |
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| CN201810687544.8A CN108958539B (en) | 2018-06-28 | 2018-06-28 | Touch display panel and touch display device |
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| CN111326544B (en) * | 2018-12-14 | 2022-09-20 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN109917954B (en) * | 2019-01-30 | 2022-09-20 | 业成科技（成都）有限公司 | Touch control device |
| JP2022535171A (en) * | 2019-03-29 | 2022-08-05 | 京東方科技集團股▲ふん▼有限公司 | Touch panels, touch display screens and display devices |
| CN209417707U (en) * | 2019-04-02 | 2019-09-20 | 京东方科技集团股份有限公司 | A kind of touch-control structure and touch control display apparatus |
| CN110515501B (en) | 2019-09-02 | 2021-09-14 | 京东方科技集团股份有限公司 | Display device and method for manufacturing the same |
| CN110780773B (en) * | 2019-10-25 | 2024-05-14 | 京东方科技集团股份有限公司 | Touch substrate and display device |
| CN111668279B (en) * | 2020-06-30 | 2022-09-13 | 湖北长江新型显示产业创新中心有限公司 | Display panel and display device |
| CN112394843B (en) * | 2020-11-27 | 2022-08-16 | 上海中航光电子有限公司 | Display panel and display device |
| CN112860110B (en) * | 2021-02-09 | 2023-12-15 | 武汉华星光电半导体显示技术有限公司 | Touch display panel |
| CN113986049B (en) * | 2021-10-20 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Touch panel and mobile terminal |
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