Array substrate and display device

By setting an electric field adjustment structure on the electrodes of the IPS display panel to adjust the electric field distribution, the problem of medium and low gray-level twill patterns is solved, and a higher display quality is achieved.

CN116500830BActive Publication Date: 2025-05-27XIAMEN TIANMA MICRO ELECTRONICS
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Patent Information

Application Number
CN202310075112.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-31
Publication Date
2025-05-27
Estimated Expiration
2043-01-31

AI Technical Summary

Technical Problem

IPS display panels are prone to twills in medium and low gray levels, affecting the display quality.

Method used

By providing an electric field adjustment structure on the first electrode or the second electrode, the electric field distribution can be adjusted, thereby affecting the deflection of the liquid crystal and reducing or eliminating the twill phenomenon.

Benefits of technology

Effectively reduce or eliminate the twill of the display panel in the medium and low gray levels, and improve the display quality.

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Abstract

The present invention relates to the field of display technologies, and relates to an array substrate and a display device. The array substrate of the present invention includes a first substrate, a metal layer, a first electrode, and a second electrode; the metal layer is disposed on one side of the first substrate, and the metal layer is provided with touch traces; the first electrode is disposed on the side of the metal layer away from the first substrate; a first insulating layer is further disposed between the first electrode and the metal layer; the first electrode is electrically connected to the touch traces provided on the metal layer through a touch connection hole penetrating the first insulating layer; the second electrode is disposed on the side of the first electrode away from the first substrate; a second insulating layer is further disposed between the second electrode and the first electrode; by providing an electric field adjustment structure on the first electrode or the second electrode, the electric field between the first electrode and the second electrode can be adjusted through the electric field adjustment structure, thereby affecting the deflection of the liquid crystal in the corresponding area, so as to reduce or eliminate the moiré phenomenon that appears in the middle and low gray levels of the display panel.
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Description

Technical Field

[0001] The present invention relates to the field of display technologies, and more specifically, to an array substrate and a display device. Background Art

[0002] Liquid crystal display panels and liquid crystal display devices are one of the current mainstream display technologies. According to the shape and position of the electrodes in the liquid crystal display panel, the liquid crystal display panel can be divided into a twisted nematic mode (TN), a vertical alignment mode (VA), a plane switching mode (IPS), etc. Among them, the IPS display panel has the advantages of fast response speed, large viewing angle, no water ripples for touch, and true color, and is widely used in various fields; however, in actual applications, the IPS display panel is prone to the phenomenon of oblique lines in the middle and low gray levels. Summary of the Invention

[0003] In view of this, the present invention provides an array substrate and a display device, aiming to reduce or eliminate the oblique line phenomenon of the IPS display panel in the middle and low gray levels, thereby improving the overall display quality of the product.

[0004] In a first aspect, the present invention provides an array substrate, including a first substrate, a metal layer, a first electrode, and a second electrode;

[0005] The metal layer is disposed on one side of the first substrate, and the metal layer is provided with touch traces;

[0006] The first electrode is disposed on the side of the metal layer away from the first substrate;

[0007] A first insulating layer is further disposed between the first electrode and the metal layer;

[0008] The first electrode is electrically connected to the touch traces provided on the metal layer through a touch connection hole penetrating the first insulating layer;

[0009] The second electrode is disposed on the side of the first electrode away from the first substrate;

[0010] A second insulating layer is further disposed between the second electrode and the first electrode;

[0011] The array substrate further includes an electric field adjusting structure;

[0012] The electric field adjusting structure is located on the first electrode or the second electrode and is used to adjust the electric field distribution at the touch connection hole.

[0013] In a second aspect, based on the same inventive concept, the present invention further provides a display device, including the array substrate provided in the first aspect of the present invention.

[0014] Compared with the related art, the array substrate and the display device provided by the present invention achieve at least the following beneficial effects:

[0015] By providing an electric field adjusting structure on the first electrode or the second electrode, the array substrate of the present invention can adjust the electric field between the first electrode and the second electrode through the electric field adjusting structure, thereby affecting the deflection of the liquid crystal in the corresponding area near the touch connection hole, so as to reduce or eliminate the moiré phenomenon that appears in the middle and low gray levels of the display panel.

[0016] Of course, it is not necessarily required that any product implementing the present invention simultaneously achieves all the above-mentioned technical effects.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0019] Figure 1 Shows the film layer structure of a display panel provided by the present invention;

[0020] Figure 2 Shows a schematic structural diagram of some film layers of the display panel of the present invention;

[0021] Figure 3 Shows a schematic diagram of the light leakage state at the touch connection hole;

[0022] Figure 4 Shows a schematic diagram of moiré of the display panel of the embodiment of the present invention at middle and low gray levels;

[0023] Figure 5 Shows a schematic plan view of some film layers in the array substrate of the present invention;

[0024] Figure 6 Shows a schematic plan view of some film layers in the array substrate in the related art;

[0025] Figure 7 For Figure 5 The simulation diagram of the shown embodiment at a low driving voltage;

[0026] Figure 8 For Figure 6 The simulation diagram of the shown embodiment at a low driving voltage;

[0027] Figure 9 Shows a schematic plan view of some film layers in the array substrate of the present invention;

[0028] Figure 10 The figure shows a schematic plan view of a partial film layer of the array substrate of the present invention;

[0029] Figure 11 The figure shows a schematic plan view of a partial film layer of the array substrate of the present invention;

[0030] Figure 12 The figure shows a schematic plan view of a partial film layer of the array substrate of the present invention;

[0031] Figure 13 It is a schematic structural view of a sub-electrode of the present invention;

[0032] Figure 14 As shown is Figure 9 a simulation diagram of the shown embodiment under a low driving voltage;

[0033] Figure 15 As shown is Figure 9 a simulation diagram of the comparative example under a low driving voltage;

[0034] Figure 16 It is Figure 14 and Figure 15 a transmittance schematic diagram at the A-A cross-section in;

[0035] Figure 17 The figure shows a schematic structural view of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0036] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.

[0038] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0039] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0040] Without departing from the spirit or scope of the present invention, various modifications and variations can be made in the present invention, which will be apparent to those skilled in the art. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided by the embodiments of the present invention can be combined with each other without contradiction.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0042] The array substrate of the present invention includes a first substrate, a metal layer, a first electrode, and a second electrode; the metal layer is disposed on one side of the first substrate, and the metal layer is provided with touch traces; the first electrode is disposed on the side of the metal layer away from the first substrate; a first insulating layer is further disposed between the first electrode and the metal layer; the first electrode is electrically connected to the touch traces provided on the metal layer through a touch connection hole penetrating the first insulating layer; the second electrode is disposed on the side of the first electrode away from the first substrate; a second insulating layer is further disposed between the second electrode and the first electrode; the array substrate further includes an electric field adjusting structure; the electric field adjusting structure is located on the first electrode or the second electrode and is used to adjust the electric field distribution at the touch connection hole. By providing the electric field adjusting structure on the first electrode or the second electrode, the present invention can adjust the electric field between the first electrode and the second electrode through the electric field adjusting structure, thereby affecting the deflection of the liquid crystal in the corresponding area, so as to reduce or eliminate the moiré phenomenon that appears in the middle and low gray levels of the display panel.

[0043] The above is the core idea of the present invention. Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the embodiments of the present invention.

[0044] Figure 1 The following shows the film layer structure of a display panel provided by the present invention. Please refer to Figure 1, the array substrate of the present invention includes a first substrate 01, a metal layer 02, a first electrode 03, and a second electrode 04; the metal layer 02 is disposed on one side of the first substrate 01, and the metal layer 02 is provided with touch traces 021; the first electrode 03 is disposed on the side of the metal layer 02 away from the first substrate 01; a first insulating layer 05 is further disposed between the first electrode 03 and the metal layer 02; the first electrode 03 is electrically connected to the touch traces 021 provided on the metal layer 02 through a touch connection hole 031 penetrating the first insulating layer 05; the second electrode 04 is disposed on the side of the first electrode 03 away from the first substrate 01; a second insulating layer 06 is further disposed between the second electrode 04 and the first electrode 03; the array substrate further includes an electric field adjusting structure; the electric field adjusting structure is located at the first electrode 03 or the second electrode 04 and is used to adjust the electric field distribution at the touch connection hole 031.

[0045] Please continue to refer to Figure 1 , in some embodiments, the array substrate further includes an active layer P and a third insulating layer J3, the active layer P is disposed on the side of the first substrate 01 close to the metal layer 02, and the third insulating layer J3 is disposed between the active layer P and the metal layer 02; the metal layer 02 is further provided with a source electrode and a drain electrode 023, and the drain electrode 023 is connected to the active layer P through a connection hole penetrating the third insulating layer J3; the second electrode 04 is connected to the drain electrode 023 provided on the metal layer 02 through a connection hole penetrating the second insulating layer 06 and the first insulating layer 05 to obtain a liquid crystal driving signal.

[0046] In some embodiments of the present invention, the first electrode 03 and the second electrode 04 are used to generate an electric field for driving the liquid crystal to rotate. In some cases, the first electrode 03 is a common electrode, and the second electrode 04 is a pixel electrode. Optionally, the first electrode 03 also serves as a touch electrode; the first insulating layer 05 functions as a planarization layer and can be made of a resin material. The function of the second insulating layer 06 is to prevent the first electrode 03 from being oxidized in subsequent processes. Therefore, it can be made of one or a mixture of silicon oxides, silicon nitrides, and silicon oxynitrides.

[0047] Figure 2 The following shows a schematic structural diagram of some film layers of the display panel of the present invention. Please combine Figure 1 with Figure 2, in some embodiments, the display panel includes pixel units, and each pixel unit includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Each sub-pixel includes a circuit unit, and the circuit units are respectively connected to the scan signal line S and the data trace 022. The circuit unit is configured to receive the data voltage transmitted by the data trace 022 under the control of the scan signal line S and output a corresponding current to the second electrode 04; optionally, the touch trace 021 and the data trace 022 are disposed on the same layer. For example, in the NMOS 10 mask process, both the touch trace 021 and the data trace 022 of the display panel use the mask of metal layer 02; the touch trace 021 needs to be connected to the first electrode 03 through the touch connection hole 031 that penetrates the first insulating layer 05. However, due to the relatively thick thickness of the first insulating layer 05, the depth of the touch connection hole 031 is relatively deep, resulting in a depression at the position of the second insulating layer 06 facing the touch connection hole 031 towards the first substrate 01.

[0048] It should be noted that Figure 2 that the pixel unit includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B is only one embodiment of the present invention. In practical applications, the configuration of each color sub-pixel can be adjusted according to needs.

[0049] Please continue to refer to Figure 1 , in addition to the array substrate, the display panel further includes an alignment layer 07, a liquid crystal layer 08, and a second substrate 09. The alignment layer 07 is entirely coated on the surfaces of the second electrode 04 and the second insulating layer 06. The liquid crystal layer 08 is located on the side of the alignment layer 07 away from the first substrate 01, and the second substrate 09 is disposed on the side of the liquid crystal layer 08 away from the first substrate 01; due to the depression at the position of the second insulating layer 06 facing the touch connection hole 031 towards the first substrate 01, a part of the alignment liquid fills the depression at the touch connection hole 031.

[0050] Figure 3 Shown is a schematic diagram of the light leakage state at the touch connection hole. Please refer to Figure 3 , through the inventor's research, it is found that the moiré phenomenon that appears in the medium and low gray pictures of the IPS display panel is caused by the light leakage at the touch connection hole 031. Figure 3 The white area around the touch connection hole 031 in

[0051] Please combine Figure 1 with Figure 3 , the alignment liquid is entirely coated on the surfaces of the second electrode 04 and the second insulating layer 06. However, due to the depression at the touch connection hole 031 of the second insulating layer 06, the flow of the alignment liquid at the depression is relatively large, and part of the alignment liquid remains in the depression, making the alignment liquid around the touch connection hole 031 thinner, resulting in abnormal deflection of the liquid crystal near the touch connection hole 031 and causing light leakage in the medium and low gray pictures.

[0052] Figure 4 The following shows a schematic diagram of the moiré pattern of a display panel at medium and low gray levels in the related art. Due to the continuous difference in the 031 columns of the macroscopic touch connection holes on the panel, the moiré pattern 032 phenomenon appears.

[0053] In view of this, the present invention sets an electric field adjustment structure at the first electrode 03 or the second electrode 04. By adjusting the electric field distribution at the touch connection hole 031 through the electric field adjustment structure, the electric field near the touch connection hole 031 is reduced or eliminated. The smaller the electric field at the touch connection hole 031, the less the light leakage occurs in the medium and low gray screens.

[0054] Figure 5 The following shows a schematic plan view of some film layers of the array substrate of the present invention. Please refer to Figure 1 and Figure 5 , in some alternative embodiments of the present invention, the electric field adjustment structure is located at the second electrode 04. The second electrode 04 includes a plurality of sub-electrodes 041; the sub-electrode 041 closest to the touch connection hole 031 in the second electrode 04 is the adjustment electrode 0411; the electric field adjustment structure includes the adjustment electrode 0411, and the shortest distance between the projection of the adjustment electrode 0411 on the first substrate 01 and the projection of the touch connection hole 031 on the first substrate is greater than or equal to 2 micrometers.

[0055] Figure 6 The following shows a schematic plan view of some film layers of the array substrate in the related art. Figure 6 The structure of the shown array substrate is the same as that of the present invention Figure 1 shown, the difference is that Figure 6 in the structure shown, the second electrode 04' includes a plurality of sub-electrodes 041', and the sub-electrode 0411' closest to the touch connection hole 031' in the second electrode 04' overlaps with the projection of the touch connection hole 031' on the first substrate.

[0056] Figure 7 is Figure 5 the simulation diagram of the shown embodiment at a low driving voltage. As can be seen from Figure 7 , the peripheral area A of the touch connection hole 031 shows a black area, indicating that there is no light leakage around the touch connection hole 031.

[0057] Figure 8 is Figure 6 the simulation diagram of the shown embodiment at a low driving voltage. As can be seen from Figure 8 , the surrounding area A' of the touch connection hole 031' shows a black area.

[0058] By comparing Figure 7 and Figure 8 , it is found that Figure 7The area of the peripheral region A of the touch connection hole 031 in Figure 8 is larger than the area of the peripheral region A' of the touch connection hole 031' in Figure 8 . This phenomenon shows that by increasing the distance between the adjustment electrode 0411 and the touch connection hole 031, the area of the black region around the touch connection hole 031 can be increased, thereby reducing the light leakage phenomenon of the touch connection hole 031.

[0059] It should be noted that Figure 5 The structure shown is only one implementation manner of the present invention, aiming to illustrate that by adjusting the distance between the touch connection hole 032 and the second electrode 04, the problem of light leakage around the touch connection hole 031 can be improved, thereby eliminating or reducing the appearance of moiré patterns. In practical applications, the second electrode 04 can be a pixel electrode, and the structure of the pixel electrode is not limited to Figure 5 the electrode structure shown in Figure 5 , and other electrode structures can also be adopted.

[0060] Figure 9 The following shows a schematic plan view of a partial film layer of the array substrate of the present invention. Please refer to Figure 1 and Figure 9 . In some alternative implementation manners of the present invention, the electric field adjustment structure is located in the second electrode 04; the second electrode 04 includes a plurality of sub - electrodes 041 arranged along the first direction X and extending in the second direction Y; along the first direction X, at least one sub - electrode of the second electrode 04 close to the touch connection hole 031 is an adjustment electrode; the electric field adjustment structure includes an adjustment electrode 0411. At the position where the adjustment electrode 0411 faces the touch connection hole 031, the included angle between the adjustment electrode 0411 and the second direction Y is θ1, and the included angle between the remaining sub - electrodes 0411 of the second electrode 4 and the second direction Y is θ2; θ1 is less than θ2; the first direction X is orthogonal to the second direction Y.

[0061] Specifically, please continue to refer to Figure 9 . Within a certain angle range, the smaller the included angle θ between the adjustment electrode 0411 and the second direction Y, the darker the brightness in the middle - low gray - scale picture. The present invention compensates for the rotation of the liquid crystal at the touch connection hole 031 in the middle - low gray - scale by reducing the included angle between the sub - electrode 041 of the second electrode 04 close to the touch connection hole 031 and the second direction Y.

[0062] It should be noted that Figure 9 The main purpose of the shown implementation manner is to illustrate that by changing the included angle between the sub - electrode 041 close to the touch connection hole 031 and the second direction Y, the rotation of the liquid crystal at the touch connection hole 031 in the middle - low gray - scale can be compensated, but the application scope of the present invention is not limited to Figure 9The second electrode structure shown; in some cases, the number of sub - electrodes 041 in the second electrode 04 in the present invention can be increased or decreased, and the structure of a single sub - electrode can also be changed. The adjustment electrode 0411 can be the sub - electrode closest to the touch connection hole 031, or two or three sub - electrodes close to the touch connection hole 031 can be selected as the adjustment electrode according to the situation.

[0063] In addition, the plane determined by the first direction X and the second direction Y mentioned in the present invention is perpendicular to the thickness direction of the array substrate. In some embodiments, the second direction Y is consistent with the extending direction of the touch trace 021.

[0064] Figure 10 The following is a schematic plan view of some film layers of the array substrate of the present invention. Please refer to Figure 1 and Figure 10 In some alternative embodiments of the present invention, the electric - field adjustment structure is located on the first electrode 03. The electric - field adjustment structure includes a hollow structure 032 provided on the first electrode 03. Along the thickness direction of the array substrate, the projection of the hollow structure 032 is located outside the touch connection hole 031 near the second electrode 04.

[0065] Specifically, please continue to refer to Figure 1 and Figure 10 In this embodiment, by providing a hollow structure 032 around the touch connection hole 031, the first electrode near the touch connection hole 031 is missing. Therefore, the area with the hollow structure 032 near the touch connection hole 031 cannot form an effective electric field with the second electrode 04, and will not affect the deflection of the liquid crystal near the touch connection hole 031, thus avoiding light leakage around the touch connection hole 031.

[0066] It should be noted that, in some cases, the first electrode 03 is a common electrode, the second electrode 04 is a pixel electrode, and the first electrode 03 is an electrode provided as a whole layer.

[0067] Please continue to refer to Figure 9 In some alternative embodiments of the present invention, the second electrode 04 further includes a first connection electrode 042 and a second connection electrode 043. The first connection electrode 042 and the second connection electrode 043 are respectively located at both ends of the extending direction of the plurality of sub - electrodes 042; the touch trace 021 is located on one side of the second electrode 04; the touch connection hole 031 is located in the touch trace 021 and is close to the second connection electrode 043.

[0068] Specifically, please continue to refer to Figure 9, in some embodiments, the touch connection hole 031 is disposed on one side of the second electrode 04 and close to the second connection electrode 043. The touch connection hole 031 is disposed at this position, which is conducive to the arrangement of the electric field adjustment structure. For example, by adjusting the position of the second electrode 04 or the structure of the sub-electrode 041 in the second electrode 04, or by providing a hollow structure 031 at the first electrode 03 near the touch connection hole 031, it is relatively easy to implement and the overall structure is relatively compact.

[0069] In addition, in some other embodiments of the present invention, the touch connection hole 031 may also be located at other positions in the extending direction of the touch trace 021. For details, please refer to Figure 11 , Figure 11 which shows a schematic plan view of a partial film layer of the array substrate of the present invention. Figure 11 In [reference], the touch connection hole 031 is located at a position close to the middle in the extending direction of the sub-electrode 041. At this time, the position of the electric field adjustment structure may also be located at the first electrode 03 or the second electrode 04. By adjusting the distance between the second electrode 04 and the touch connection hole 031, that is, shifting the second electrode 04 as a whole to the left to increase the distance; or a hollow structure may also be provided around the touch connection hole 031. However, compared with the way that the touch connection hole 031 is disposed close to the second connection electrode 043, it will occupy more area.

[0070] Please refer to Figure 5 , Figure 5 in which the length of the adjustment electrode 0411 is less than the lengths of the other sub-electrodes 041 in the second electrode 04.

[0071] Please continue to refer to Figure 5 , Figure 5 in which the second electrode 04 includes 6 sub-electrodes 041 arranged along the X direction and extending in the Y direction. The 6 sub-electrodes are successively the first sub-electrode, the second sub-electrode, the third sub-electrode, the fourth sub-electrode, the fifth sub-electrode and the sixth sub-electrode in the arranged order; the two sub-electrodes closest to the touch connection hole 031 are the fifth sub-electrode and the sixth sub-electrode respectively. In this specific embodiment, it is selected that both the fifth sub-electrode and the sixth sub-electrode are used as the adjustment electrode 0411. By shortening the lengths of the fifth sub-electrode and the sixth sub-electrode, the distances between the fifth sub-electrode and the sixth sub-electrode and the touch connection hole 031 are increased, so as to weaken the electric field near the touch connection hole 031, thereby reducing the influence of the touch connection hole 031 on the liquid crystal deflection, and further reducing the light leakage around the touch connection hole 031.

[0072] It should be noted that Figure 5The structure shown is only one embodiment of the present invention, aiming to illustrate that by shortening the length of the adjustment electrode 0411, the distance between the touch connection hole 032 and the second electrode 04 can be adjusted, improving the problem of light leakage around the touch connection hole 032, thereby eliminating or reducing the appearance of moiré patterns. In practical applications, the number of sub-electrodes in the second electrode 04 can be more or less, such as 3, 5, or 8; the adjustment electrode can be the sub-electrode closest to the touch connection hole 031, or two or three sub-electrodes closer to the touch connection hole.

[0073] Figure 12 The following shows a schematic plan view of some film layers of the array substrate of the present invention. Please refer to Figure 12 , at the adjustment electrode 0411 closest to the touch connection hole 031, the corresponding section of the second connection electrode 043 is missing.

[0074] Please continue to refer to Figure 12 , at the adjustment electrode 0411 closest to the touch connection hole 031, the corresponding section of the second connection electrode 043 is missing, which means that along the arrangement direction X of the sub-electrodes 041 in the second electrode 04, the second connection electrode 043 is only connected to the adjacent sub-electrode of the adjustment electrode 0411 and does not further extend towards the adjustment electrode 0411; Figure 12 In [reference], the second electrode 04 includes 6 sub-electrodes 041 arranged along the X direction and extending in the Y direction. The 6 sub-electrodes are, in order of arrangement, the first sub-electrode, the second sub-electrode, the third sub-electrode, the fourth sub-electrode, the fifth sub-electrode, and the sixth sub-electrode; the two sub-electrodes closest to the touch connection hole 031 are the fifth sub-electrode and the sixth sub-electrode. In this specific embodiment, both the fifth sub-electrode and the sixth sub-electrode are selected as the adjustment electrode 0411. By shortening the lengths of the fifth sub-electrode and the sixth sub-electrode, the distances between the fifth sub-electrode and the sixth sub-electrode and the touch connection hole 031 are increased. Further, on the basis of this structure, by making the corresponding section of the second connection electrode 043 connected to the sixth sub-electrode closest to the touch connection hole 031 missing, that is: the second connection electrode 043 is only provided at the ends of the first sub-electrode to the fifth sub-electrode. Along the X direction, the leftmost end of the second connection electrode 043 is connected to the first sub-electrode, and the rightmost end of the second connection electrode 043 extends to the fifth sub-electrode and stops, without extending to the sixth sub-electrode; thus further increasing the distance between the second electrode 04 and the touch connection hole 031, further weakening the electric field near the touch connection hole 031, further reducing the influence of the touch connection hole 031 on the liquid crystal deflection, and further reducing the light leakage around the touch connection hole 031.

[0075] It should be noted that Figure 12The structure shown is only one implementation of the present invention, aiming to illustrate that by defaulting the corresponding section of the second connection electrode 043 at the adjustment electrode 0411 closest to the touch connection hole 031, the distance between the touch connection hole 032 and the second electrode 04 can be adjusted, improving the light leakage problem around the touch connection hole 032, thereby eliminating or reducing the appearance of moiré patterns. In actual applications, according to the situation, the corresponding sections of the second connection electrode 043 at the fifth sub-electrode and the sixth sub-electrode can also be defaulted.

[0076] Please continue to refer to Figure 9 , along the second direction Y, the sub-electrode 041 includes multiple electrode segments, and the end electrode of the adjustment electrode 0411 opposite to the touch connection hole 032 is the end electrode of the adjustment electrode 0411; the included angle between the end electrode of the adjustment electrode 0411 and the second direction Y is θ1, and the included angle between the end electrodes of the remaining sub-electrodes 041 in the second electrode 04 and the second direction Y is θ2, and 5° ≤ θ1 ≤ 40°.

[0077] Figure 13 This is a schematic structural diagram of the sub-electrode of the present invention. Please combine Figure 9 with Figure 13 , the sub-electrode 041 includes a middle electrode 04A, a first main body electrode 04B, a second main body electrode 04C, a first end electrode 04D, and a second end electrode 04E. The sub-electrode 041 has a double-domain structure, which is divided into a first domain 21 and a second domain 22. The middle electrode 04A is V-shaped, and the two sides of the middle electrode 04A are the first main body electrode 04B and the second main body electrode 04C respectively. The part between the first main body electrode 04B and the first connection electrode 042 is the first end electrode 04C, and the part between the second main body electrode 04C and the second connection electrode 043 is the second end electrode 04E.

[0078] Please continue to combine Figure 9 with Figure 13 , specifically, in the present invention, the included angle between the second end electrode 04E of the sub-electrode 041 close to the touch connection hole 031 and the Y direction is reduced, thereby compensating for the rotation of the liquid crystal at the touch connection hole 031 in the middle and low gray levels; in the embodiments given in the present invention, the included angle between the second end electrode 04E of the fifth sub-electrode and the sixth sub-electrode close to the touch connection hole 031 and the Y direction is reduced, that is: the included angle θ1 between the second end electrode 04E of the fifth sub-electrode and the sixth sub-electrode and the Y direction is less than the included angle θ2 between the second end electrode 04E of the remaining sub-electrodes and the Y direction; in actual applications, one or more sub-electrodes 041 close to the touch connection hole 031 can be selected as the adjustment electrode 0411 according to the situation.

[0079] Figure 14 As shown in Figure 9Simulation diagram of the exemplary embodiment at a low driving voltage Figure 15 Shown is Figure 9 The simulation diagram of the comparative example at a low driving voltage. In the comparative example, the included angle between the end electrode segments of the multiple sub-electrodes included in the second electrode is the same as the second direction. Figure 16 is Figure 14 and Figure 15 The transmittance schematic diagram at the A-A cross-section in Figure 9 , Figure 14 , Figure 15 and Figure 16 . Figure 16 In , the abscissa is the cross-sectional position and the ordinate is the transmittance; Figure 16 contains two curves. One curve is the transmittance schematic diagram at the A-A cross-section in Figure 15 , and the other is the transmittance schematic diagram at the A-A cross-section in Figure 14 ; It can be seen from Figure 16 that the two curves have a high degree of coincidence when the abscissa is in the range of 0 - 130, but there is a relatively obvious difference when the abscissa is 150; In the order from left to right, the ordinate of the first peak F1 corresponds to the transmittance at the fifth sub-electrode in Figure 15 , and the ordinate of the second peak F2 corresponds to the transmittance at the fifth sub-electrode in Figure 14 . Comparing the two, Figure 14 the transmittance at the fifth sub-electrode in Figure 15 is significantly lower than the transmittance at the fifth sub-electrode in Figure 16 ; Therefore,

[0080] Please continue to refer to Figure 10 . Along the direction from the touch connection hole 031 to the nearest second electrode 04, the width of the hollow structure 032 is greater than or equal to 2 microns. The hollow structure 032 needs to have a certain width to avoid the influence of the touch connection hole 031 on the liquid crystal electric field.

[0081] Based on the same inventive concept, the present invention also provides a display device. Please refer to Figure 17 . Figure 17 Shown is a schematic structural diagram of the display device provided by the embodiment of the present invention. The display device 200 provided in this embodiment includes the array substrate provided in any of the above embodiments.

[0082] It can be understood that the display device 200 provided by the embodiments of the present invention can be a computer, a mobile phone, a tablet, or other display devices with display functions, and the present invention does not make specific limitations thereto. The display device provided by the embodiments of the present invention has the beneficial effects of the display panel provided by the embodiments of the present invention. For specific descriptions of the display panel, reference can be made to the above embodiments, and details will not be repeated herein.

[0083] In summary, the array substrate 100 and the display device 200 provided by the present invention at least achieve the following beneficial effects:

[0084] In the array substrate of the present invention, an electric field adjustment structure is provided on the first electrode 03 or the second electrode 04. The electric field between the first electrode 03 and the second electrode 04 can be adjusted through the electric field adjustment structure, thereby affecting the deflection of the liquid crystal in the corresponding area near the touch connection hole 031, so as to reduce or eliminate the moiré phenomenon that appears in the middle and low gray levels of the display panel; specifically, the distance between the pixel electrode and the touch connection hole 031 can be increased, and the means of increasing the distance include reducing the length of the sub-electrode in the pixel electrode, saving the connection electrode at the sub-electrode, etc.; the bending angle of the pixel electrode near the touch connection hole can also be adjusted to compensate for the rotation of the liquid crystal at the middle and low gray levels; in addition, the common electrode near the touch connection hole 031 can be hollowed out to eliminate the electric field near the touch connection hole 031, thereby eliminating the light leakage caused by the abnormal deflection of the liquid crystal at the touch connection hole, and thus reducing the appearance of the moiré phenomenon.

[0085] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An array substrate, characterized in that, it includes a first substrate, a metal layer, a first electrode and a second electrode; the metal layer is disposed on one side of the first substrate, and the metal layer is provided with touch traces and data traces, and the touch traces and the data traces are arranged in the same layer; the first electrode is disposed on the side of the metal layer away from the first substrate; a first insulating layer is further disposed between the first electrode and the metal layer; the first electrode is electrically connected to the touch traces provided on the metal layer through a touch connection hole penetrating through the first insulating layer; the second electrode is disposed on the side of the first electrode away from the first substrate; a second insulating layer is further disposed between the second electrode and the first electrode; the array substrate further includes an electric field adjusting structure; the electric field adjusting structure is located at the second electrode and is used to adjust the electric field distribution at the touch connection hole; the second electrode includes a plurality of sub - electrodes arranged along a first direction; along a second direction, the sub - electrodes include a plurality of electrode segments, and the first direction is orthogonal to the second direction; along the first direction, at least one sub - electrode of the second electrode close to the touch connection hole is an adjusting electrode; the electric field adjusting structure includes the adjusting electrode. At the position where the adjusting electrode faces the touch connection hole, the included angle between the adjusting electrode and the second direction is θ1; the included angle between the remaining sub - electrodes of the second electrode and the second direction is θ2; at the position where the adjusting electrode faces the touch connection hole is the end electrode of the adjusting electrode; the included angle between the end electrode of the adjusting electrode and the second direction is the θ1, and the included angle between the end electrodes of the remaining sub - electrodes of the second electrode and the second direction is the θ2; θ1 is less than θ2.

2. The array substrate according to claim 1, characterized in that, 5° ≤ θ1 ≤ 40°.

3. The array substrate according to claim 1, characterized in that, the second direction is consistent with the extending direction of the touch traces.

4. The array substrate according to claim 1, characterized in that, the first electrode is a common electrode, and the second electrode is a pixel electrode.

5. The array substrate according to claim 1, characterized in that, the second electrode further includes a first connection electrode and a second connection electrode, and the first connection electrode and the second connection electrode are respectively located at two ends of the extending direction of the plurality of sub - electrodes; the touch connection hole is close to the second connection electrode.

6. A display device, characterized in that, it includes the array substrate according to any one of claims 1 to 5.

Citation Information

Patent Citations

  • A touch display panel and a touch display device

    CN109445646A