CN111708237A - Array substrate, display panel and display device - Google Patents
Array substrate, display panel and display device Download PDFInfo
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- CN111708237A CN111708237A CN202010620889.9A CN202010620889A CN111708237A CN 111708237 A CN111708237 A CN 111708237A CN 202010620889 A CN202010620889 A CN 202010620889A CN 111708237 A CN111708237 A CN 111708237A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
Abstract
The embodiment of the invention discloses an array substrate, a display panel and a display device. The array substrate comprises a substrate; the first wiring layer and the transparent conducting layer are arranged on one side of the substrate; the first routing layer comprises a plurality of touch signal lines and data signal lines, the transparent conducting layer comprises a plurality of common electrodes, and the common electrodes are multiplexed into touch electrodes; the transparent conducting layer further comprises a plurality of conducting blocks, and the conducting blocks are electrically connected with the corresponding touch signal lines through at least one through hole; the first edge of the conductive block is at a distance d from the first edge of the adjacent first common electrode block1The distance between the first edge of the touch signal line and the first edge of the adjacent first common electrode block is d2The distance between the second edge of the touch signal line and the first edge of the adjacent second common electrode block is d3，d2≥d1>d3. According to the scheme of the embodiment of the invention, the lateral parasitic capacitance between the touch signal line and the common electrode can be reduced, so that the load of the touch signal line is reduced, and the risk of poor display is reduced.
Description
Technical Field
The embodiment of the invention relates to a display technology, in particular to an array substrate, a display panel and a display device.
Background
Since touch operation is a simple and convenient man-machine interaction method, more and more products integrate a touch function into a liquid crystal display panel. Touch panels are classified into an Add On Touch Panel (Add On Touch Panel), an overlay surface Touch Panel (On Cell Touch Panel), and an in Cell Touch Panel (InCell Touch Panel) according to their structures. The embedded touch panel is characterized in that the touch electrode of the touch panel is arranged in the liquid crystal display panel, so that the whole thickness of the module can be reduced, and the manufacturing cost of the touch panel can be greatly reduced, thereby being widely applied.
In the prior art, in order to further reduce the structure and cost of the lcd panel, a Touch and Display Driver Integration (TDDI) technology has been developed, that is, a Touch chip and a Display chip are integrated into a same chip, a common electrode of the Display panel is multiplexed as a Touch electrode, and the chip provides a common voltage signal and a Touch voltage signal to the common electrode in the Display stage and the Touch stage, respectively. Because the touch signal line is positioned between two adjacent common electrodes in the existing design and is very close to the common electrodes, the lateral electric field from the touch signal line to the common electrodes on the left side and the right side is stronger, and the load of the touch signal line is larger. Especially for a high refresh frequency (e.g. 90Hz) screen, the larger load causes the touch delay to be larger, and the refresh rate of the screen cannot be kept up with, resulting in poor display.
Disclosure of Invention
The embodiment of the invention provides an array substrate, a display panel and a display device, wherein the array substrate is designed to reduce lateral parasitic capacitance between a touch signal line and a common electrode, so that the load of the touch signal line is reduced, and the risk of poor display is reduced.
In a first aspect, an embodiment of the present invention provides an array substrate, including:
a substrate base plate;
the first wiring layer and the transparent conducting layer are arranged on one side of the substrate base plate and are separated by the insulating layer;
the first routing layer comprises a plurality of touch signal lines and data signal lines, the touch signal lines extend along a first direction and are arranged along a second direction, the transparent conducting layer comprises a plurality of common electrodes, the common electrodes are multiplexed into touch electrodes, each common electrode is electrically connected with at least one touch signal line, each common electrode comprises a plurality of connected common electrode blocks, the projection of each touch signal line on the substrate base plate is positioned between the projections of two adjacent columns of common electrode blocks on the substrate base plate, and the data signal lines are partially overlapped with the common electrode blocks;
the data signal line comprises a first data signal line and a second data signal line, the first data signal line and the second data signal line are respectively positioned at two sides of the touch signal line, and the distance between the first data signal line and the touch signal line is greater than the distance between the second data signal line and the data signal line;
the common electrode block comprises a first common electrode block and a second common electrode block, the first common electrode block and the first data signal line are positioned on the same side of the touch signal line, and the second common electrode block and the second data signal line are positioned on the same side of the touch signal line;
the transparent conducting layer further comprises a plurality of conducting blocks, the conducting blocks are at least partially overlapped with the touch signal lines along the direction perpendicular to the plane of the substrate base plate, and the conducting blocks are electrically connected with the corresponding touch signal lines through at least one through hole;
the distance between the first edge of the conductive block and the first edge of the first end of the adjacent first common electrode block is d1The projection of the first edge of the touch signal line on the plane where the transparent conducting layer is located and the distance between the first edge of the first end of the first common electrode block adjacent to the first edge of the touch signal line and the first edge of the first end of the first common electrode block are d2The projection of the second edge of the touch signal line on the plane where the transparent conducting layer is located and the distance between the projection of the second edge of the touch signal line and the first edge of the second end of the adjacent second common electrode block are d3，d2≥d1>d3；
The first edge of the conductive block, the first edge of the first end of the first public electrode block, the first edge of the touch signal line, the second edge of the touch signal line and the first edge of the second end of the second public electrode block are all extended along the first direction, the first end of the first public electrode block is close to the end of the touch signal line, and the second end of the second public electrode block is close to the end of the touch signal line.
In a second aspect, an embodiment of the invention further provides a display panel, including the array substrate.
In a third aspect, an embodiment of the present invention further provides a display device, including the display panel described above.
The array substrate provided by the embodiment of the invention comprises a substrate, a first wiring layer and a transparent conducting layer, wherein the first wiring layer and the transparent conducting layer are arranged on one side of the substrate and are separated through an insulating layer; the first routing layer comprises a plurality of touch signal lines and data signal lines which extend along a first direction and are arranged along a second direction, the transparent conducting layer comprises a plurality of common electrodes, and the common electrodes are multiplexed into touch electrodes; the transparent conducting layer is arranged to comprise a plurality of conducting blocks, the conducting blocks are at least partially overlapped with the touch signal lines along the direction perpendicular to the plane of the substrate base plate, and the conducting blocks are electrically connected with the corresponding touch signal lines through at least one through hole, so that the conducting blocks are connected with the touch signal lines in parallel, and the resistance of the touch signal lines is reduced; the distance between the first edge of the conductive block and the first edge of the first end of the adjacent first common electrode block is larger than the distance between the projection of the first edge of the touch signal line on the plane where the transparent conductive layer is located and the first edge of the first end of the adjacent first common electrode block, so that the lateral parasitic capacitance between the touch signal line and the common electrode can be effectively weakened, the load of the touch signal line is reduced, and the risk of poor display is reduced.
Drawings
Fig. 1 is a schematic top view of an array substrate in the prior art;
fig. 2 is a schematic diagram of a partial top view structure of an array substrate according to an embodiment of the present invention;
fig. 3 is a schematic partial top view of another array substrate according to an embodiment of the present invention;
fig. 4 to 7 are schematic partial top views of another array substrate according to an embodiment of the present invention;
fig. 8 and 9 are schematic partial top views of another array substrate according to an embodiment of the present invention;
fig. 10 and fig. 11 are schematic partial top views illustrating another array substrate according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
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. It should be noted that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it is also to be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through an intermediate element. The terms "first," "second," and the like, are used for descriptive purposes only and not for purposes of limitation, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic top view of an array substrate in the prior art. Referring to fig. 1, the array substrate includes a plurality of scanning signal lines 1 extending in a row direction and arranged in a column direction, a plurality of data signal lines 2 extending in the column direction and arranged in the row direction, and a plurality of touch signal lines 3 extending in the column direction and arranged in the row direction; and a plurality of common electrodes 4, wherein the common electrodes 4 are multiplexed as touch electrodes, and each common electrode 4 includes a common electrode block 6 (shown by a dotted line frame in fig. 1) covering a plurality of pixels 5, and the touch signal lines 3 are connected to the corresponding common electrodes 4 as touch electrodes. Referring to fig. 1, the touch signal line 3 is located between two adjacent columns of common electrode blocks 6, because the common electrode 4 is generally made of transparent metal oxide (e.g., indium tin oxide ITO), and the touch signal line 3 is made of metal routing (e.g., the same layer as the data signal line), that is, the common electrode 4 and the touch signal line 3 are arranged in different layers, the transverse distances a and B between the common electrode 4 and the touch signal line 3 insulated from the common electrode are very small, generally about 2 μm, during the preparation process, so that the coupling effect between the touch signal line 3 and the common electrode 4 is strong during the use process, a strong lateral electric field is formed, and the load on the touch signal line 3 is large. Especially for the screen with high refresh frequency of 90Hz, the delay of the touch signal is large due to the large load, which may not keep up with the refresh rate of the screen, resulting in poor display.
It should be noted that although one common electrode 4 is electrically connected to only one touch signal line 3 in fig. 1, the embodiment of the present invention is not limited thereto, and in other embodiments, one common electrode 4 may be electrically connected to a plurality of touch signal lines 3.
In order to solve the above problems, an embodiment of the present invention provides an array substrate, including a substrate; the first wiring layer and the transparent conducting layer are arranged on one side of the substrate and are separated by the insulating layer; the first routing layer comprises a plurality of touch signal lines and data signal lines, the touch signal lines extend along a first direction and are arranged along a second direction, the transparent conducting layer comprises a plurality of common electrodes, the common electrodes are multiplexed into touch electrodes, each common electrode is electrically connected with at least one touch signal line, and each common electrode is electrically connected with at least one touch signal lineThe projection of each touch signal line on the substrate base plate is positioned between the projections of two adjacent columns of common electrode blocks on the substrate base plate, and the data signal lines are partially overlapped with the common electrode parts; the data signal line comprises a first data signal line and a second data signal line, the first data signal line and the second data signal line are respectively positioned at two sides of the touch signal line, and the distance between the first data signal line and the touch signal line is greater than the distance between the second data signal line and the data signal line; the common electrode block comprises a first common electrode block and a second common electrode block, the first common electrode block and the first data signal line are positioned on the same side of the touch signal line, and the second common electrode block and the second data signal line are positioned on the same side of the touch signal line; the transparent conducting layer also comprises a plurality of conducting blocks, the conducting blocks are at least partially overlapped with the touch signal lines along the direction perpendicular to the plane of the substrate base plate, and the conducting blocks are electrically connected with the corresponding touch signal lines through at least one through hole; the first edge of the conductive block is at a distance d from the first edge of the first end of the adjacent first common electrode block1The projection of the first edge of the touch signal line on the plane where the transparent conductive layer is located and the distance from the first edge of the first end of the adjacent first common electrode block are d2The projection of the second edge of the touch signal line on the plane of the transparent conducting layer and the first edge of the second end of the adjacent second common electrode block are at a distance d3，d2≥d1>d3(ii) a The first edge of the conductive block, the first edge of the first end of the first common electrode block, the first edge of the touch signal line, the second edge of the touch signal line and the first edge of the second end of the second common electrode block extend along a first direction, the first end of the first common electrode block is the end, close to the touch signal line, of the first common electrode block, and the second end of the second common electrode block is the end, close to the touch signal line, of the second common electrode block.
The substrate may be a rigid substrate, such as a glass substrate, or a flexible substrate, such as a polyimide substrate, which is not limited in the embodiments of the present invention. The transparent conductive layer can be any one of Indium Tin Oxide (ITO), Antimony Tin Oxide (ATO), fluorine-doped tin oxide (FTO), aluminum-doped zinc oxide (AZO), boron-doped zinc oxide (BZO), gallium-doped zinc oxide (GZO) or 3, 4-ethylenedioxythiophene Polymer (PEDOT), and can be flexibly selected according to actual conditions during specific implementation. In other embodiments, the transparent conductive layer may also be a film, a metal nanowire, graphene, or the like formed by a metal and an oxide thereof, and only the characteristics of transparency to emergent light of the display device and conductivity need to be satisfied. It can be understood that the common electrode in the array substrate provided in this embodiment is reused as a touch electrode, and the principle used for touch is not limited in specific implementation, for example, a self-capacitance touch principle may be adopted, and a plurality of common electrode blocks are connected to form a strip-shaped or block-shaped touch electrode; the mutual capacitance touch principle can also be adopted, part of the common electrodes form touch driving electrodes, and part of the common electrodes form touch sensing electrodes, and the touch driving electrodes and the touch sensing electrodes can be arranged according to actual conditions during specific implementation.
Fig. 2 is a schematic diagram illustrating a partial top-down structure of an array substrate according to an embodiment of the present invention. Referring to fig. 2, the array substrate provided in the present embodiment includes a first routing layer 10 and a transparent conductive layer 20 disposed on one side of a substrate (not shown in fig. 2) and spaced apart by an insulating layer; the first routing layer 10 comprises a plurality of touch signal lines 11 and data signal lines 12 which extend along a first direction y and are arranged along a second direction x, the transparent conductive layer 20 comprises a plurality of common electrode blocks 21, projections of the touch signal lines 12 on the substrate base plate are positioned between projections of two adjacent columns of the common electrode blocks 21 on the substrate base plate, and the data signal lines 12 are partially overlapped with the common electrode blocks 21; two data signal lines adjacent to the touch signal line 11 are a first data signal line 12a and a second data signal line 12b, respectively, and the distance between the first data signal line 12a and the touch signal line 11 is greater than the distance between the second data signal line 12b and the touch signal line 11; the common electrode block 21 includes a first common electrode block 21a and a second common electrode block 21b, the first common electrode block 21a and the first data signal line 12a are located on the same side of the touch signal line 11, and the second common electrode block 21b and the second data signal line 12b are located on the same side of the touch signal line 11; fig. 2 schematically shows that the first common electrode block 21a is located on the left side of the touch signal line 11, and the second common electrode blockThe common electrode block 21b is located at the right side of the touch signal line 11, and is not limited to the embodiment of the present invention. The transparent conductive layer 20 further includes a conductive block 22, the conductive block 22 is at least partially overlapped with the touch signal line 11 along a direction perpendicular to the plane of the substrate, and the conductive block 22 is electrically connected to the corresponding touch signal line 11 through at least one via 23 (only one via is schematically shown in fig. 2, and is not a limitation to the embodiment of the present invention); the left edge of the conductive block 22 is spaced from the right edge of the adjacent first common electrode block 21a by a distance d1The distance between the projection of the left edge of the touch signal line 11 on the plane of the transparent conductive layer 20 and the right edge of the adjacent first common electrode block 21a is d2The distance between the projection of the right edge of the touch signal line 11 on the plane where the transparent conductive layer 20 is located and the left edge of the adjacent second common electrode block 21b is d3，d2≥d1>d3. In specific embodiment d2It may be about 4 μm. This arrangement can increase the distance between the touch signal line 11 and the first common electrode block 21a, and reduce the lateral electric field between the touch signal line 11 and the first common electrode block 21 a.
It is understood that the array substrate further includes a plurality of pixel electrodes 50 and a plurality of scanning signal lines 30 extending along the second direction x and arranged along the first direction y, each scanning signal line 30 is electrically connected to a gate of a row of thin film transistors 40 (a specific structure of the thin film transistors is not shown in fig. 2), and each data signal line 12 is electrically connected to a source of a column of thin film transistors 40; each pixel electrode 50 is electrically connected to the drain electrode of the corresponding thin film transistor 40.
According to the technical scheme of the embodiment of the invention, the transparent conducting layer comprises a plurality of conducting blocks, the conducting blocks are at least partially overlapped with the touch signal lines along the direction perpendicular to the plane of the substrate base plate, and the conducting blocks are electrically connected with the corresponding touch signal lines through at least one through hole, so that the conducting blocks are connected with the touch signal lines in parallel, and the resistance of the touch signal lines is reduced; the distance between the first edge of the conductive block and the first edge of the first end of the adjacent first common electrode block is larger than the distance between the projection of the first edge of the touch signal line on the plane where the transparent conductive layer is located and the first edge of the first end of the adjacent first common electrode block, so that the lateral parasitic capacitance between the touch signal line and the common electrode can be effectively weakened, the load of the touch signal line is reduced, and the risk of poor display is reduced.
On the basis of the above embodiment, optionally, the second edge of the conductive block is at a distance d from the first edge of the second end of the adjacent second common electrode block4，d4≥d3The second edge of the conductive block extends in the first direction.
Illustratively, with continued reference to FIG. 2, the right edge of the conductive block 22 is spaced from the left edge of the adjacent second common electrode block 21b by a distance d4By setting d4≥d3Thereby preventing the distance between the conductive block 22 and the second common electrode block 21b from being excessively small and weakening the coupling between the conductive block 22 and the second common electrode block 21 b.
Optionally, the touch signal line further includes a dummy touch signal line, and the dummy touch signal line is insulated from the common electrode; the projection of the dummy touch signal line on the substrate base plate is positioned between the projections of the two adjacent columns of the common electrodes on the substrate base plate.
For example, referring to fig. 1, the touch signal lines further include a dummy touch signal line 31 disposed between two rows of the common electrodes 4, and the dummy touch signal line 31 is not electrically connected to the common electrodes, so as to avoid uneven display in the area due to no trace in the area.
Optionally, the extension length of the conductive block in the first direction is the same as the extension length of the common electrode block in the first direction.
For example, fig. 3 is a schematic partial top view structure diagram of another array substrate according to an embodiment of the present invention. Referring to fig. 3, since the dummy touch signal line 110 is insulated from the common electrode, the extension length of the conductive block 22 along the first direction y may be set to be the same as the extension length of the common electrode block 21 along the first direction y, so that the shape of the transparent conductive layer may be simplified and the process difficulty may be reduced.
Optionally, the extension length of the conductive block along the first direction is smaller than the extension length of the common electrode block along the first direction, and the first end of the first common electrode block includes at least one protrusion.
For example, fig. 4 to 7 are schematic partial top view structural diagrams of another array substrate according to an embodiment of the present invention, and referring to fig. 4 to 7, an extension length of the conductive block 22 along the first direction y is less than an extension length of the common electrode 21 along the first direction y, and a right end of the first common electrode 21a includes at least one protrusion, so that an electrode shape of a sub-pixel corresponding to the right end of the first common electrode 21a is close to other sub-pixel shapes, and display unevenness is avoided. In other embodiments, the number of the protrusions can be set to be more, only the distance between the protrusions and the conductive block needs to be ensured, and the protrusions can be designed according to actual conditions during specific implementation.
It is understood that the first common electrode block 21a and the second common electrode block 21b shown in fig. 4 to 7 are connected, and the corresponding touch signal line is a dummy touch signal line.
Optionally, at least part of the protrusion extends to the adjacent second common electrode block and is electrically connected with the second common electrode block.
For example, fig. 8 and fig. 9 are schematic partial top view structures of another array substrate according to an embodiment of the present invention, referring to fig. 2, fig. 8 or fig. 9, respectively, one or two protrusions extend to an adjacent second common electrode block 21b and are electrically connected to the second common electrode block 21b, and the touch signal lines corresponding to the embodiment are connected to the common electrodes in a one-to-one correspondence manner.
Fig. 10 and fig. 11 are schematic partial top views illustrating another array substrate according to an embodiment of the present invention. In fig. 10, a dummy touch signal line 110 is shown, and in fig. 11, a touch signal line 11 connected to the common electrode is shown. Referring to fig. 10 and fig. 11, optionally, the array substrate provided in this embodiment further includes a plurality of scanning signal lines 30 extending along the second direction x and arranged along the first direction y, and projections of the scanning signal lines 30 on the substrate are located between projections of two adjacent rows of the common electrode blocks 21 on the substrate; the touch signal line 11 is provided with a via base 111, an extension length of the via base 111 in the second direction x is greater than a width of the touch signal line 11, a projection of the via base 111 on the substrate is at least partially overlapped with a projection of the scanning signal line 30 on the substrate, and the conductive block 22 extends to a region where the via base 111 is located and is electrically connected with the via base 111 through a via 23. By providing the via base 111, the areas of the touch signal line 11 and the conductive block 22 can be increased, and the resistance of the touch signal line 11 can be reduced.
Optionally, with continuing reference to fig. 10 or fig. 11, the array substrate provided in this embodiment further includes a plurality of thin film transistors 40 and pixel electrodes 50 arranged in an array; the gate of each row of thin film transistors 40 is electrically connected to one scanning signal line 30, the source of each column of thin film transistors 40 is electrically connected to one data signal line 12, and the drain of each thin film transistor 40 is electrically connected to one pixel electrode 50.
It is understood that each pixel electrode 50 may correspond to a sub-pixel of one light-emitting color, such as a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and three sub-pixels of different light-emitting colors form a pixel unit, so as to implement color display.
Alternatively, referring to fig. 2 to 11, the common electrode block 21 includes a plurality of openings 211 extending along the first direction y and arranged along the second direction x, and the width of the openings 211 in the second direction x is d5，d5＝d1。
The array substrate provided by the embodiment can be used in a liquid crystal display panel, and an electric field for controlling liquid crystal deflection is formed by arranging a plurality of openings 211 on the common electrode block 21 so as to form an electric field with the pixel electrode, and d is designed5＝d1The gap between the conductive block 22 and the common electrode block 21 and the opening 211 can be formed by one process, which is beneficial to simplifying the manufacturing process.
Optionally, each common electrode block corresponds to a pixel region, and each pixel region includes a red sub-pixel region, a green sub-pixel region, and a blue sub-pixel region; in a pixel area formed by the first common electrode block adjacent to the touch signal line, a blue sub-pixel area is adjacent to the touch signal line; the number of the openings corresponding to the blue sub-pixel region is n, and the number of the openings corresponding to the red sub-pixel region and the green sub-pixel region is n + 1; wherein n is an integer greater than or equal to 2.
Exemplarily, referring to fig. 11, each common electrode block 21 corresponds to one pixel region P, and each pixel region P includes a red sub-pixel region R, a green sub-pixel region G, and a blue sub-pixel region B; in the pixel region P formed by the first common electrode block 21a adjacent to the touch signal line 11, the blue sub-pixel region B is adjacent to the touch signal line 11; the blue sub-pixel region B corresponds to 2 openings 211, and the red and green sub-pixel regions R and B correspond to 3 openings 211.
It can be understood that, when the display panel displays, the sensitivity of human eyes to blue light is low, so that the design of the shape of the common electrode corresponding to the blue sub-pixel is different from the shape of the common electrode corresponding to other sub-pixels, and the defect is not easily seen by human eyes. The number of the openings in fig. 11 is only schematic, and the openings may be designed according to a time situation in a specific implementation, and in other embodiments, the red sub-pixel or the green sub-pixel may be designed to be adjacent to the touch signal line, which is not limited in the embodiment of the present invention.
The embodiment of the invention also provides a display panel which comprises any one of the array substrates provided by the embodiment. Since the display panel provided by the embodiment of the present invention includes any one of the array substrates provided by the above embodiments, the display panel has the same or responsive technical effects as the array substrate, and details are not described herein.
Fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention. Referring to fig. 12, the display device 100 includes a display panel 200 according to an embodiment of the present invention. The display device 100 may be a mobile phone, a tablet computer, a smart wearable device, and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. An array substrate, comprising:
a substrate base plate;
the first wiring layer and the transparent conducting layer are arranged on one side of the substrate base plate and are separated by the insulating layer;
the first routing layer comprises a plurality of touch signal lines and data signal lines, the touch signal lines extend along a first direction and are arranged along a second direction, the transparent conducting layer comprises a plurality of common electrodes, the common electrodes are multiplexed into touch electrodes, each common electrode is electrically connected with at least one touch signal line, each common electrode comprises a plurality of connected common electrode blocks, the projection of each touch signal line on the substrate base plate is positioned between the projections of two adjacent columns of common electrode blocks on the substrate base plate, and the data signal lines are partially overlapped with the common electrode blocks;
the data signal line comprises a first data signal line and a second data signal line, the first data signal line and the second data signal line are respectively positioned at two sides of the touch signal line, and the distance between the first data signal line and the touch signal line is greater than the distance between the second data signal line and the data signal line;
the common electrode block comprises a first common electrode block and a second common electrode block, the first common electrode block and the first data signal line are positioned on the same side of the touch signal line, and the second common electrode block and the second data signal line are positioned on the same side of the touch signal line;
the transparent conducting layer further comprises a plurality of conducting blocks, the conducting blocks are at least partially overlapped with the touch signal lines along the direction perpendicular to the plane of the substrate base plate, and the conducting blocks are electrically connected with the corresponding touch signal lines through at least one through hole;
the distance between the first edge of the conductive block and the first edge of the first end of the adjacent first common electrode block is d1The projection of the first edge of the touch signal line on the plane where the transparent conducting layer is located and the distance between the first edge of the first end of the first common electrode block adjacent to the first edge of the touch signal line and the first edge of the first end of the first common electrode block are d2The projection of the second edge of the touch signal line on the plane where the transparent conducting layer is located and the distance between the projection of the second edge of the touch signal line and the first edge of the second end of the adjacent second common electrode block are d3，d2≥d1>d3；
The first edge of the conductive block, the first edge of the first end of the first public electrode block, the first edge of the touch signal line, the second edge of the touch signal line and the first edge of the second end of the second public electrode block are all extended along the first direction, the first end of the first public electrode block is close to the end of the touch signal line, and the second end of the second public electrode block is close to the end of the touch signal line.
2. The array substrate of claim 1, wherein the second edge of the conductive block is spaced apart from the first edge of the second end of the adjacent second common electrode block by a distance d4，d4≥d3And the second edge of the conductive block extends along the first direction.
3. The array substrate of claim 1, wherein the touch signal lines further comprise dummy touch signal lines, the dummy touch signal lines being insulated from the common electrode;
the projection of the dummy touch signal line on the substrate base plate is positioned between the projections of the two adjacent columns of the common electrodes on the substrate base plate.
4. The array substrate of claim 3, wherein the conductive block has the same extension length along the first direction as the common electrode block.
5. The array substrate of claim 1, wherein the conductive block has a length extending in the first direction that is less than a length extending in the first direction of the common electrode block, and wherein the first end of the first common electrode block comprises at least one protrusion.
6. The array substrate of claim 5, wherein at least a portion of the protrusions extend to and are electrically connected to the adjacent second common electrode block.
7. The array substrate of claim 1, further comprising a plurality of scanning signal lines extending along the second direction and arranged along the first direction, wherein projections of the scanning signal lines on the substrate are located between projections of two adjacent rows of the common electrode blocks on the substrate;
the touch signal line is provided with a via hole base, the extending length of the via hole base in the second direction is larger than the width of the touch signal line, the projection of the via hole base on the substrate base plate is at least partially overlapped with the projection of the scanning signal line on the substrate base plate, and the conductive block extends to the area where the via hole base is located and is electrically connected with the via hole base through a via hole.
8. The array substrate of claim 7, further comprising a plurality of thin film transistors and pixel electrodes arranged in an array;
the grid electrode of each row of the thin film transistors is electrically connected with a scanning signal line, the source electrode of each column of the thin film transistors is electrically connected with a data signal line, and the drain electrode of each thin film transistor is electrically connected with a pixel electrode.
9. According to any one of claims 1 to 8The array substrate is characterized in that the common electrode block comprises a plurality of openings which extend along the first direction and are arranged along the second direction, and the width of each opening in the second direction is d5，d5＝d1。
10. The array substrate of claim 9, wherein each common electrode block corresponds to a pixel region, and each pixel region comprises a red sub-pixel region, a green sub-pixel region and a blue sub-pixel region;
in a pixel area formed by the first common electrode block adjacent to the touch signal line, the blue sub-pixel area is adjacent to the touch signal line;
the number of the openings corresponding to the blue sub-pixel region is n, and the number of the openings corresponding to the red sub-pixel region and the green sub-pixel region is n + 1;
wherein n is an integer greater than or equal to 2.
11. A display panel comprising the array substrate according to any one of claims 1 to 10.
12. A display device characterized by comprising the display panel according to claim 11.
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| CN111708237B (en) | 2023-06-06 |
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