CN111142704B - Array substrate and touch display panel - Google Patents
Array substrate and touch display panel Download PDFInfo
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- CN111142704B CN111142704B CN201911284350.4A CN201911284350A CN111142704B CN 111142704 B CN111142704 B CN 111142704B CN 201911284350 A CN201911284350 A CN 201911284350A CN 111142704 B CN111142704 B CN 111142704B
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- 239000000758 substrate Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The application discloses an array substrate and a touch display panel, wherein the array substrate comprises a plurality of touch electrodes and a plurality of wire groups corresponding to the touch electrodes, the wire groups comprise a plurality of first wire groups and at least one second wire group, and the number of touch wires included in the first wire groups and the number of touch wires included in the second wire groups are different; the second wire groups are arranged on the same side of the first wire groups and are adjacent to the first wire groups; the wiring lengths of the first wiring group and the second wiring group which are arranged along the second direction are sequentially gradually changed; the array substrate can solve the problem of larger RC loading difference value caused by different corresponding touch trend numbers of adjacent touch electrodes under the condition of not affecting the aperture ratio.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to an array substrate and a touch display panel including the array substrate.
Background
A liquid crystal display, which is one of the most widely used flat panel displays at present, has gradually become a display having a high resolution color screen widely used for various electronic devices such as mobile phones, personal Digital Assistants (PDAs), digital cameras, computer screens, or notebook computer screens. With the development and progress of the lcd technology, people put higher demands on the display quality, the appearance design, the man-machine interface, etc. of the lcd, wherein the touch technology has the characteristics of convenient operation, high integration, etc. which are hot spots for the technical development.
Touch technology (Touch Panel Technology) has been rapidly developed in recent years, and various touch technologies are currently put into mass production. In the existing Touch screen technology, three modes of Out-cell, on-cell and In-cell can be classified according to different positions of a Touch sensor. The In-cell technology not only further reduces the thickness of the whole machine, but also can be manufactured together with the LCD, and the visibility of the LCD In a bright environment is not affected. Accordingly, in-cells In which a touch panel function is integrated with a liquid crystal panel are being actively studied.
Fig. 1 is a schematic plan view of an embodiment of a conventional display panel. Referring to fig. 1, the display panel includes a touch electrode 10, a touch trace 20 and a driving chip 30. Each touch electrode 10 is connected to the driving chip 30 through at least one touch trace 20.
FIG. 2 is a schematic plan view of an embodiment of a conventional array substrate. Referring to fig. 2, the array substrate includes a touch electrode 10 and a trace set 20. Each of the trace groups 20 includes at least one touch trace 200. Each touch electrode 10 corresponds to one trace group 20 and is electrically connected to each touch trace 200 of the trace group 20.
With reference to fig. 2, in consideration of the number of touch electrodes 10 and resolution, there are adjacent first and second wire sets 21 and 22 in the conventional array substrate, and the number of touch wires 200 included in the first and second wire sets 21 and 22 is different, so that the capacitance (RC loading) of the adjacent wire sets 20 is greatly different. In the display, there may be a risk of poor display of the small grid due to different capacitance resistance (RC loading) in the touch sensing (Sensor pad) area corresponding to the two touch electrodes 10 corresponding to the first trace group 21 and the second trace group 22.
Therefore, it is desirable to provide an array substrate and a touch display panel to solve the above problems.
Disclosure of Invention
The application aims to solve the problems and provide an array substrate and a touch display panel, wherein the array substrate can overcome the problem of larger RC loading difference value caused by different numbers of touch wires corresponding to touch electrodes in adjacent touch sensing areas under the condition of not affecting the aperture ratio or the transmittance by adopting a wiring layout with sequentially graded wiring lengths of a plurality of wiring groups.
In order to achieve the above purpose, the array substrate and the touch display panel of the present application adopt the following technical means.
The application provides an array substrate, which comprises a plurality of touch electrodes arranged along a first direction and a plurality of wiring groups which are arranged along a second direction and correspond to the touch electrodes; wherein, the plurality of routing groups include: each first wiring group comprises m touch wiring lines connected with the corresponding touch electrode; the second wiring groups are arranged on the same side of the first wiring groups and are adjacent to the first wiring groups, and each second wiring group comprises n touch control wirings connected with the corresponding touch control electrode; wherein m and n are non-equal positive integers; and, the length of the first wire set and the second wire set arranged along the second direction gradually changes.
Further, the number of line segments of the touch trace of the first trace group, which is orthographically projected to the plurality of touch electrodes in the direction perpendicular to the array substrate, is a, and the number of line segments of the touch trace of the second trace group, which is orthographically projected to the plurality of touch electrodes in the direction perpendicular to the array substrate, is b, where a and b sequentially taper along a second direction.
Further, the number of line segments of the touch trace of the first trace group, which are orthographic projected on any one of the touch electrodes in the direction perpendicular to the array substrate, is c, and the number of line segments of the touch trace of the second trace group, which are orthographic projected on any one of the touch electrodes in the direction perpendicular to the array substrate, is d, where c and d are equal positive integers.
Further, if m > n, the first wire set includes a first touch wire and a second touch wire, and the second wire set includes a first touch wire and a compensation wire connected in parallel with the first touch wire; wherein: the wire length of the second touch wire is smaller than or equal to that of the first touch wire, and the wire length of the second touch wire in the first wire group sequentially changes in a gradient manner along the second direction; and the compensating wires extend along the first direction, and the wire lengths of all the compensating wires included in the second wire group sequentially taper along the second direction.
Further, if m < n, the first wire set includes a first touch wire and a compensation wire connected in parallel with the first touch wire, and the second wire set includes a first touch wire and a second touch wire; wherein: the wire length of the second touch wire is smaller than or equal to that of the first touch wire, and the wire length of the second touch wire in the second wire group sequentially changes in a gradient manner along the second direction; and the compensating wires extend along the first direction, and the wire lengths of all the compensating wires of the first wire group sequentially taper along the second direction.
Further, the first routing group and the second routing group further include at least one connection routing, and orthographic projections of the connection routing on the direction perpendicular to the array substrate are located between two adjacent touch electrodes, and are used for connecting the first touch routing with the second touch routing in parallel, or connecting the first touch routing with the compensation routing in parallel.
Further, the touch control wiring is in a linear extension or a stepped bending extension.
The application also provides a touch display panel, which comprises any one of the array substrates and a driving chip.
Further, the working phase of the touch display panel comprises a display phase and a touch phase, and in the display phase, the touch electrodes are multiplexed into a common electrode.
The array substrate and the touch display panel comprising the array substrate have the beneficial effects that:
(1) By adopting a wiring arrangement mode that the wiring lengths of a plurality of adjacent wiring groups are sequentially gradually changed, the array substrate can effectively solve the problem of larger RC loading difference caused by different numbers of the contained touch wirings in adjacent touch sensing areas or display areas, and improves the display effect;
(2) By adjusting the extending shape of the touch control wiring and arranging the compensation wiring, the array substrate can realize a wiring mode that the wiring lengths of a plurality of wiring groups are sequentially graded without affecting the aperture ratio or the transmittance, and ensure the uniformity of wiring arrangement.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic plan view of an embodiment of a conventional display panel.
FIG. 2 is a schematic plan view of an embodiment of a conventional array substrate.
FIG. 3 is a schematic plan view of an array substrate according to an embodiment of the application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
As shown in fig. 2, in consideration of the number of touch electrodes 10, resolution, and other factors, there may be adjacent first and second wire groups 21 and 22 in the conventional array substrate, where the number of touch wires 200 included in the first and second wire groups 21 and 22 is different. That is, in the conventional array substrate, there are cases where the number of touch traces 200 connected between two adjacent touch electrodes 10 and the driving chip is different.
When the number of the touch traces 200 of the two adjacent trace groups 20 is different, the difference of the number of the touch traces 200 may cause a larger load difference on the adjacent touch traces 200, thereby causing a smaller touch uniformity and a poorer display uniformity in the adjacent touch sensing (sensing) area.
In order to overcome the above-mentioned problems, in the present application, the inventor sets the plurality of trace groups 20 including the first trace group 21 and the second trace group 22 as a sequentially tapered wiring manner by adjusting the layout design of the touch trace 200, so as to prevent an obvious RC loading difference between adjacent touch sensing areas (Sensor pads).
FIG. 3 is a schematic plan view of an array substrate according to an embodiment of the application. As shown in fig. 3, the array substrate includes a plurality of touch electrodes 10 arranged along a first direction Y and a plurality of trace groups 20 arranged along a second direction X and respectively corresponding to the touch electrodes 10.
Each of the trace groups 20 includes a number of touch traces 200, one end of each of the touch traces 200 is connected to its corresponding touch electrode 10, and the other end of each of the touch traces 200 is connected to a driving chip.
Specifically, the first direction Y and the second direction X are perpendicular to each other. In this embodiment, the first direction Y is a vertical direction, and the second direction X is a horizontal direction.
As shown in fig. 3, the touch electrodes 10 are spaced apart from each other. That is, the space between the adjacent touch electrodes 10 is hollowed. By hollowing out the touch electrodes 10, crosstalk between different touch sensing areas can be prevented.
Specifically, at least one electrical connection point is disposed on each of the touch electrodes 10, and each of the touch traces 200 is connected to the touch electrode 10 through one of the electrical connection points. That is, the number of electrical connection points on each touch electrode 10 is consistent with the number of touch wires 200 of the corresponding wire set 20.
As shown in fig. 3, the touch electrode 20 is rectangular in shape. It should be noted that, fig. 3 only illustrates the shape and arrangement of the touch electrode 10. It is to be understood that the structure or shape of the touch electrode 10 is not limited to the above description, as long as the structure of the touch electrode 10 does not cause a short circuit between the touch electrodes 10. In specific implementation, the material forming the touch electrode 10 may be Indium Tin Oxide (ITO).
As shown in fig. 3, the trace groups 20 are arranged along the second direction X and correspond to the touch electrodes 10. Each of the trace groups 20 includes at least one touch trace 200, and each of the touch traces 200 is connected to the touch electrode 10 corresponding to the trace group 20.
Optionally, the touch trace 200 is disposed in different layers from the touch electrode 10. The arrangement of the different layers of the touch trace 200 and the touch electrode 10 belongs to a conventional technical means in the art, and the disclosure is not repeated here.
As shown in fig. 3, the touch trace 200 extends along the first direction Y as a whole. It should be noted that "extending along the first direction Y as a whole" does not merely mean that the touch trace 200 is parallel to the first direction Y, but means that the touch trace 200 as a whole has a tendency to extend along the first direction Y. In a specific implementation, the touch trace 200 extends in a straight line or in a stepped bending manner.
As shown in fig. 3, the plurality of trace groups 20 includes a plurality of first trace groups 21 and at least one second trace group 22. Each of the first trace groups 21 includes m touch traces 200 connected to the corresponding touch electrode 10. The second wire sets 22 are arranged on the same side of the first wire sets 21 and adjacent to the first wire sets 21, and each second wire set 22 includes n touch wires 200 connected to the corresponding touch electrode 10. Wherein m and n are non-equal positive integers; and, the trace length L of the first trace group 21 and the trace length L of the second trace group 22 are sequentially gradually changed along the second direction X.
By adopting the wiring mode that the plurality of wiring groups 20 including the first wiring group 21 and the second wiring group 22 are set as the wiring mode that the wiring lengths L are sequentially gradually changed, the array substrate can realize the sequential gradual change of the RCloadings of the plurality of wiring groups 20, further the problem of larger RC loading difference caused by different numbers of the touch wires 200 contained in adjacent touch sensing areas can be effectively solved, and finally the problem of poor display of the small square grids is solved.
The trace length L of the first trace group 21 and the trace length L of the second trace group 22 refer to the total trace length or the effective trace length of the first trace group 21 and the total trace length or the effective trace length of the second trace group 22, respectively.
It should be noted that the total bus length refers to the sum of the trace lengths of all the touch traces 200 of each group of traces 20, the trace lengths of all the compensating traces 203 associated with the touch traces 200, and the trace lengths of all the connecting traces 204. The effective length refers to the sum of lengths of all the touch traces 200 of each set of traces 20 and all the compensation traces 203 and all the connection traces 204 associated with the touch traces 200 projected on the plurality of touch electrodes 10.
With continued reference to fig. 3, when the trace length L of the trace group 20 sequentially increases, the area of the overlapping area of the trace group 20 and the touch electrode 10 also sequentially increases, so that the capacitance values of the trace group 20 and the touch electrode 10 sequentially increases, and the RC loading of the touch trace 200 is gradually increased, thereby finally solving the problem that the difference between the RC loading of adjacent touch sensing areas caused by the different numbers of the touch traces 200 included in the trace group 20 is larger.
It should be noted that, although the change of the trace length L of the trace group 20 may also cause the change of the total resistance value of the touch trace 200 of the trace group 20, the change of RC loading changes with the change of the sensing capacitance value as the main trend. That is, when the trace lengths L of the trace groups 20 are sequentially graded, the RC loading of the touch trace 200 is sequentially graded according to the same or similar trend as the trace lengths L. The "change of RC loading changes with the change of the sensing capacitance value as the main trend" belongs to a common technical scheme in the art, and is not described herein.
It can be seen that, by setting the first routing group 21 and the second routing group 22 to sequentially taper the routing length L along the second direction X, the area of the projection overlapping area of the first routing group 21 and the second routing group 22 on the touch electrode 10 can be sequentially tapered, so that the RCloading of the first routing group 21 and the second routing group 22 is sequentially tapered, and finally the problem that the difference of RC loading caused by different numbers of the touch routing wires 200 corresponding to adjacent touch electrodes 10 is larger can be solved.
It should be noted that: 1) The "m+.n" is to emphasize that the number of the touch traces 200 included in the first trace group 21 and the second trace group 22 is different, and is not limited to the magnitude of the number relationship or the specific number range. For example, in the embodiment shown in fig. 3, m > n, that is, the number of touch traces 200 included in the first trace group 21 is greater than the number of touch traces 200 included in the second trace group 22. In other embodiments, m < n may be further defined, that is, the number of touch traces 200 included in the first trace group 21 is smaller than the number of touch traces 200 included in the second trace group 22.
2) The "gradual change in sequence along the second direction X" means that the trace lengths L of the first trace group 21 and the second trace group 22 sequentially change along the arrangement direction according to the same trend, that is, it emphasizes the characteristics of uniformity of the change trend and sequential change, without particularly limiting the magnitude of the change difference, or the trend of becoming larger or smaller.
Specifically, the number of line segments of the touch trace 200 of the first trace group 21 orthographic projected on the plurality of touch electrodes 10 in the direction perpendicular to the array substrate is a, the number of line segments of the touch trace 200 of the second trace group 22 orthographic projected on the plurality of touch electrodes 10 in the direction perpendicular to the array substrate is b, and the a and b sequentially taper along the second direction. That is, the number of line segments orthographic projected on the plurality of touch electrodes 10 in the direction perpendicular to the array substrate by the touch wires 200 of the first wire set 21 and the touch wires 200 of the second wire set 22 sequentially tapers along the second direction X.
Specifically, the touch trace 200 includes a first touch trace 201 and a second touch trace 202. The trace length L1 of the first touch trace 201 is the same, the trace length L2 of the second touch trace 202 is less than or equal to the trace length L1 of the first touch trace 201, and the trace length L2 of the second touch trace 202 in the trace group 20 including the second touch trace 202 gradually changes along the second direction X. It can be seen that the trace length L of the trace group 20 can be adjusted by adjusting the variation of the trace length L2 of the second touch trace 202 in the trace group 20 including the second touch trace 202.
In this embodiment, the number of the line segments orthographic projected onto the touch electrode 10 by the first touch trace 201 is the same, and the number of the line segments orthographic projected onto the plurality of touch electrodes 10 by the second touch trace 202 of the trace group 20 including the second touch trace 202 decreases along the second direction X.
In a specific implementation, the first touch trace 201 and the second touch trace 202 are connected in parallel, so that the resistance of the trace group 10 can be reduced, the sensitivity of the touch reaction can be improved, and the influence of the change of the trace length L2 of the second touch trace 202 on the resistance of the trace group 20 can be further reduced.
Specifically, at least part of the trace groups 20 further include compensating traces 203. The compensating trace 203 extends along the first direction Y, and the compensating trace 203 has a trace length L3. It can be seen that by adjusting the trace length L3 of all the compensating traces 203 of the trace group 20, the trace length L of the trace group 20 can be adjusted.
Specifically, the length of the orthographic projection of the compensation trace 203 on the array substrate is not less than the width of a touch electrode 10 in the first direction Y. That is, the trace length L3 of the compensating trace 203 is not less than the width of a touch electrode 10 in the first direction Y.
In a specific implementation, when the trace length L3 of the compensating trace 203 is a specific value, the trace length L of the trace set 20 can be changed by merely adjusting the number of compensating traces 203 included in the trace set 20.
Each of the trace groups 20 includes one or more of the first touch trace 201, the second touch trace 202, or the compensating trace 203, and the trace length L of each of the trace groups 20 includes one or more of the following three parts: the sum of the trace lengths L1 of all the first touch traces 201 of the trace group 20, the sum of the trace lengths L2 of all the first touch traces 202 of the trace group 20, or the sum of all the compensating traces 203 of the trace group 20. The trace length L1, the trace length L2, and the trace length L3 refer to an actual length or a length orthographic projected onto the touch electrode 10 of each of the first touch trace 201, the second touch trace 202, or the compensation trace 203, respectively.
It can be seen that the array substrate of the present application can realize the progressive wiring mode along the second direction X by adopting the first touch trace 201, the second touch trace 202 or the compensating trace 203 to perform combination or configuration.
In an embodiment, m > n, the first trace group 21 includes a first touch trace 201 and a second touch trace 202, and the second trace group 22 includes a first touch trace and at least one compensation trace connected in parallel with the first touch trace; wherein: the length of the second touch trace 202 is smaller than that of the first touch trace 201, and the lengths of the second touch traces 202 of the first trace group 20 sequentially taper along the second direction X; and, the compensating wires 203 extend along the first direction Y, and the wire lengths of all the compensating wires 203 included in the second wire group 22 sequentially taper along the second direction.
In another embodiment, m < n, the first trace group 21 includes a first touch trace 202 and a compensation trace 203 for the first touch trace, and the second trace group 22 includes a first touch trace 201 and a second touch trace 203; wherein: the trace length L2 of the second touch trace 202 is smaller than the trace length L1 of the first touch trace 201, and the trace length L2 of the second touch trace 202 in the first trace group 21 sequentially tapers along the second direction X; and, the compensating wires 203 extend along the first direction Y, and the wire lengths of all the compensating wires 203 included in the first wire group 21 sequentially taper along the second direction Y.
Wherein, "the trace length of all the compensating traces 203" refers to the sum of the trace lengths L3 of the compensating traces 203.
Specifically, the number of line segments of the touch trace 200 of the first trace group 21 orthographic projected on any one of the touch electrodes 10 in the direction perpendicular to the array substrate is c, and the number of line segments of the touch trace 200 of the second trace group 22 orthographic projected on any one of the touch electrodes 10 in the direction perpendicular to the array substrate is d, where c and d are equal positive integers. That is, the number of line segments of the first trace group 21 and the second trace group 22 orthographically projected on any one of the touch electrodes 10 in the direction perpendicular to the array substrate is equal. By changing the arrangement shape or the extension shape of the touch trace 200, the array substrate can realize the wiring mode that the trace length L sequentially and progressively changes on the premise of not additionally occupying the opening ratio of the array substrate, and the problem of larger RC loading mutation or difference value of the adjacent touch traces 200 is solved.
For example, in the embodiment shown in fig. 3, the first touch trace 201 or the second touch trace 202 respectively extends along the first direction Y in a stepped bending manner or in a straight line; the trace length L2 of the second touch trace 202 is less than or equal to the trace length L1 of the first touch trace 201, so that an avoidance space can be formed in a region corresponding to a part of the touch electrodes 10, so that the compensation trace 203 is arranged in the touch electrode 10 with the avoidance space; and then the size of the avoiding space and the length L3 and the number of the compensating wires 203 are adjusted, so that the number of the projected wire segments of the wire set 20 in each touch electrode 10 is the same, and the uniformity of the wire distribution in the area of each touch electrode 10 is ensured.
With continued reference to fig. 3, in the implementation, the length L2 of the second touch trace 202 adjacent to the first trace group 21 is different from the length of the orthographic projection of the array substrate by a width of the touch electrode 10 in the first direction Y. The length of the orthographic projection of the compensating trace 203 on the array substrate is equal to the width of a touch electrode 10 in the first direction Y, and the number of compensating traces 203 included in the adjacent second trace group 22 sequentially tapers.
As shown in fig. 3, at least a portion of the trace group 20 further includes connection traces 204. The orthographic projection of the connecting trace 204 in the direction perpendicular to the array substrate is located between two adjacent touch electrodes 10, and is used for connecting the first touch trace 201 and the second touch trace 202 in parallel, or connecting the first touch trace 201 and the compensating trace 203 in parallel. That is, the connection trace 204 is used for parallel connection between the first touch trace 201 and the second touch trace 202 or the compensation trace 203, and the connection trace 204 has no overlapping area with the touch electrode 10.
Compared with the prior art, the array substrate can realize a wiring mode that the wiring length L of the plurality of wiring groups 20 is gradually changed on the premise of not additionally occupying the aperture ratio by parallel connection of the touch control wirings 200 and compensating the wirings 203, and further can effectively solve the problem of larger RC loading difference of the adjacent touch control wirings 200 caused by different numbers of the touch control wirings 200 of the adjacent wiring groups 20.
The application also provides a touch display panel which comprises an array substrate and a driving chip, wherein the array substrate is the array substrate.
Specifically, the operation phase of the touch display panel includes a display phase and a touch phase, and in the display phase, the touch electrode 10 is multiplexed as a common electrode. That is, the touch electrode 10 is used as a common electrode in the display stage and as a touch electrode in the touch stage. By multiplexing the touch electrode 10 as a common electrode, the display panel is made thinner.
Specifically, in the touch stage of the display panel, the touch electrode 10 is configured to generate a touch signal and receive a sensing signal to determine a touch position, where the data line is not connected to a driving signal; in the display stage of the display panel, the touch electrode 10 generates the VCOM potential in coordination with the signal transmitted by the data line, so as to realize the normal display of the display panel.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The array substrate and the touch display panel provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and the embodiments of the present application, and the description of the above embodiments is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (9)
1. An array substrate is characterized by comprising a plurality of touch electrodes arranged along a first direction and a plurality of wiring groups which are arranged along a second direction and correspond to the touch electrodes; wherein, the plurality of routing groups include:
each first wiring group comprises m touch wiring lines connected with the corresponding touch electrode; the method comprises the steps of,
the second wiring groups are arranged on the same side of the first wiring groups and are adjacent to the first wiring groups, and each second wiring group comprises n touch control wirings connected with the corresponding touch control electrode;
wherein m and n are non-equal positive integers; the wiring lengths of the first wiring group and the second wiring group which are arranged along the second direction are sequentially gradually changed;
the wire length of the first wire set and the wire length of the second wire set refer to the total length or the effective length of the wires of the first wire set and the total length or the effective length of the wires of the second wire set respectively;
at least part of the wiring groups further comprise compensation wires, and the compensation wires extend along the first direction;
the touch control wires comprise a first touch control wire and a second touch control wire, the wire length of the second touch control wire is smaller than or equal to that of the first touch control wire, so that an avoidance space can be formed in a region corresponding to a part of the touch control electrodes, and the compensation wire is arranged in the touch control electrodes with the avoidance space.
2. The array substrate of claim 1, wherein the number of line segments of the touch trace of the first trace group orthographically projected to the plurality of touch electrodes in a direction perpendicular to the array substrate is a, the number of line segments of the touch trace of the second trace group orthographically projected to the plurality of touch electrodes in a direction perpendicular to the array substrate is b, and a and b sequentially taper along a second direction.
3. The array substrate of claim 1, wherein the number of line segments of the touch trace of the first trace group orthographic projected on any one of the touch electrodes in a direction perpendicular to the array substrate is c, and the number of line segments of the touch trace of the second trace group orthographic projected on any one of the touch electrodes in a direction perpendicular to the array substrate is d, wherein c and d are equal positive integers.
4. The array substrate of claim 1, wherein if m > n, the first trace group includes the first touch trace and the second touch trace, the second trace group includes the first touch trace and the compensation trace in parallel with the first touch trace; wherein:
the wire length of the second touch wire is smaller than or equal to that of the first touch wire, and the wire length of the second touch wire in the first wire group sequentially changes in a gradient manner along the second direction; the method comprises the steps of,
the compensating wires extend along the first direction, and the wire lengths of all the compensating wires included in the second wire group sequentially taper along the second direction.
5. The array substrate of claim 1, wherein if m < n, the first trace group includes the first touch trace and the compensation trace in parallel with the first touch trace, and the second trace group includes the first touch trace and the second touch trace; wherein:
the wire length of the second touch wire is smaller than or equal to that of the first touch wire, and the wire length of the second touch wire in the second wire group sequentially changes in a gradient manner along the second direction; the method comprises the steps of,
the compensating wires extend along the first direction, and the wire lengths of all the compensating wires of the first wire group sequentially taper along the second direction.
6. The array substrate according to claim 4 or 5, wherein the first trace group and the second trace group further comprise at least one connection trace, and a orthographic projection of the connection trace in a direction perpendicular to the array substrate is located between two adjacent touch electrodes, and is used for connecting the first touch trace and the second touch trace in parallel, or connecting the first touch trace and the compensation trace in parallel.
7. The array substrate of claim 1, wherein the touch trace extends in a straight line or a stepped bend.
8. A touch display panel, wherein the touch display panel comprises the array substrate of any one of claims 1 to 7 and a driving chip.
9. The touch display panel of claim 8, wherein the operational phase of the touch display panel comprises a display phase and a touch phase, wherein the touch electrodes are multiplexed as a common electrode during the display phase.
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