CN115993742A

CN115993742A - Array substrate and display panel

Info

Publication number: CN115993742A
Application number: CN202211097261.0A
Authority: CN
Inventors: 张立志; 郑浩旋
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-04-21

Abstract

The application relates to an array substrate and a display panel, wherein the array substrate comprises a plurality of sub-pixels arrayed in a display area, the display area comprises a first display area and a second display area positioned on the periphery of the first display area, and the penetration rate of the sub-pixels in the second display area is smaller than that of the sub-pixels in the first display area. The array substrate can effectively solve the problem of peripheral brightness caused by the fact that the peripheral height is higher than the in-plane height in the liquid crystal box forming process.

Description

Array substrate and display panel

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to an array substrate and a display panel.

Background

The liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as thin body, power saving, no radiation, etc., and is widely used as follows: liquid crystal televisions, mobile phones, personal Digital Assistants (PDAs), digital cameras, computer screens, notebook computer screens, and the like are dominant in the field of flat panel displays.

In the case of a liquid crystal display, the problem of uneven thickness of the case is easily caused by poor peripheral packaging, for example, the peripheral height is higher than the in-plane height, resulting in peripheral brightness.

Disclosure of Invention

The present disclosure is directed to an array substrate and a display panel, which can effectively improve the problem of peripheral brightness of a liquid crystal display.

In a first aspect, an embodiment of the present application provides an array substrate, including a plurality of sub-pixels arranged in an array in a display area, where the display area includes a first display area and a second display area located at a peripheral side of the first display area, and a transmittance of the sub-pixels in the second display area is smaller than that of the sub-pixels in the first display area.

In one possible embodiment, the second display area is disposed around at least part of the peripheral side of the first display area, and the second display area includes at least one row or one column of sub-pixels.

In one possible embodiment, the second display area is located at a plurality of corners of the first display area, and the corners include at least three sub-pixels of different colors.

In one possible embodiment, each sub-pixel includes a plurality of pixel electrodes located in a rectangular pixel region, the plurality of pixel electrodes being arranged in parallel and at intervals, the pixel electrodes being arranged obliquely with respect to a short side direction of the pixel region, wherein an angle of inclination of the pixel electrodes of the sub-pixels in the second display region is smaller than an angle of inclination of the pixel electrodes of the sub-pixels in the first display region.

In one possible implementation manner, a first included angle θ1 is formed between the pixel electrode of the sub-pixel in the second display area and the short side direction of the corresponding pixel area, a second included angle θ2 is formed between the pixel electrode of the sub-pixel in the first display area and the short side direction of the corresponding pixel area, the value range of the first included angle is 0< θ1<45 °, the value range of the second included angle is 0< θ2 <45 °, and θ1< θ2.

In one possible embodiment, the second display area is disposed around a peripheral side of the first display area, the second display area includes at least two circles of sub-pixels, and an inclination angle of the pixel electrode of each circle of sub-pixels becomes gradually smaller as a distance thereof from the first display area becomes larger.

In one possible embodiment, each sub-pixel includes a plurality of pixel electrodes located in a rectangular pixel region, the plurality of pixel electrodes being arranged in parallel and spaced apart, wherein a first ratio of a line width to a pitch of the pixel electrodes of the sub-pixels in the second display region is smaller than a second ratio of the line width to the pitch of the pixel electrodes of the sub-pixels in the first display region.

In one possible embodiment, the second display area is disposed around a peripheral side of the first display area, the second display area includes at least two circles of sub-pixels, and a ratio of a line width to a pitch of the pixel electrode of each circle of sub-pixels becomes gradually smaller as a distance thereof from the first display area becomes larger.

In one possible implementation manner, the pixel electrode comprises a main electrode and a branch electrode which are connected with each other, the main electrode divides the pixel region into at least two domains, the branch electrodes in each domain are parallel and spaced, and are arranged at a preset included angle with the main electrode, and the directions of the branch electrodes in different domains are different; wherein the branch electrode is disposed obliquely with respect to a short side direction of the pixel region.

In a second aspect, embodiments of the present application further provide a display panel, including an array substrate as described above; the color film substrate is arranged opposite to the array substrate; the liquid crystal layer is arranged between the array substrate and the color film substrate.

According to the array substrate and the display panel provided by the embodiment of the application, the penetration rate of the sub-pixels in the second display area positioned on the periphery of the first display area is smaller than that of the sub-pixels in the first display area, so that the problem of peripheral brightening of the liquid crystal display can be effectively improved.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are designated with like reference numerals. The drawings are not drawn to scale, but are merely for illustrating relative positional relationships, and the layer thicknesses of certain portions are exaggerated in order to facilitate understanding, and the layer thicknesses in the drawings do not represent the actual layer thickness relationships.

Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure;

fig. 2 shows a top view of an exemplary array substrate provided in a first embodiment of the present application;

FIG. 3 is a schematic diagram showing a structure of one sub-pixel of the array substrate shown in FIG. 2;

FIG. 4 is a schematic diagram showing the structure of another sub-pixel of the array substrate shown in FIG. 2;

fig. 5 shows a cross-sectional view of the region M in fig. 4;

fig. 6 shows a top view of another example array substrate provided by the first embodiment of the present application;

fig. 7 shows a top view of an array substrate provided in a second embodiment of the present application;

fig. 8 shows a top view of an array substrate provided in a third embodiment of the present application;

fig. 9 shows a top view of an array substrate provided in a fourth embodiment of the present application;

fig. 10 shows a top view of an array substrate provided in a fifth embodiment of the present application;

fig. 11 shows a top view of an array substrate provided in a sixth embodiment of the present application.

Reference numerals illustrate:

1. an array substrate; 10. a first substrate base plate; AA. A display area; a1, a first display area; B. binding area; a2, a second display area; px, sub-pixels; 11. a pixel electrode; 111. a trunk electrode; 112. a branch electrode;

2. a color film substrate; 20. a second substrate base plate; 21. a common electrode; 3. and a liquid crystal layer.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the size of the region structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure.

As shown in fig. 1, an embodiment of the present application provides a display panel, including: the liquid crystal display comprises an array substrate 1, a color film substrate 2 arranged opposite to the array substrate 1 and a liquid crystal layer 3 arranged between the array substrate 1 and the color film substrate 2. The liquid crystal layer 3 comprises a plurality of liquid crystal molecules, typically rod-shaped, which both flow like a liquid and have certain crystal characteristics. When the liquid crystal molecules are in an electric field, the alignment direction thereof is changed according to the change of the electric field.

Since the liquid crystal display panel is a non-emissive light receiving element, a light source is required to be provided by a backlight module disposed on one side of a backlight surface thereof. The array substrate 1 comprises a first substrate 10 and a plurality of pixel electrodes 11 arranged on the first substrate 10, the color film substrate 2 comprises a second substrate 20 and a common electrode 21 arranged on the second substrate 20, and the liquid crystal display panel controls the rotation of liquid crystal molecules of the liquid crystal layer 3 by applying driving voltages to the pixel electrodes 11 and the common electrode 21 so as to refract light rays provided by the backlight module to generate a picture. In order to display a color picture, a thin film transistor array is generally prepared on the array substrate 1 for driving rotation of liquid crystal molecules to control display of each sub-pixel.

In the process of forming a box of a liquid crystal display panel, a first alignment film and a second alignment film are generally prepared on opposite surfaces of an array substrate 1 and a color film substrate 2 respectively, the first alignment film and the second alignment film are used for limiting the orientation of liquid crystal molecules in a liquid crystal layer 3, then a sealing frame glue is coated on a frame of the array substrate 1, liquid crystal is dripped into the frame, the array substrate 1 and the color film substrate 2 are attached in a vacuum state, and finally the frame glue is solidified through ultraviolet irradiation, so that the packaging of the array substrate 1 and the color film substrate 2 is completed.

With the development of active thin film transistor liquid crystal display (Thin Film Transistor-LCD, TFT-LCD for short) technology, the size of display screen is increasing, and the quality requirement of people for display screen is also increasing, wherein the requirement for a large viewing angle range is particularly obvious. In order to improve the utilization rate of the glass substrate, small-size liquid crystal byproducts are generally arranged on the periphery of a large-size liquid crystal main product, and large conductive gold balls suitable for the main product are also adopted as the byproducts in the packaging process, and the peripheral height of a liquid crystal box of the byproducts is higher than the peripheral height in the plane due to insufficient support in a display surface of the small-size byproducts, so that peripheral brightness is generated.

In order to solve the problem, the embodiments of the present application provide an array substrate and a display panel, which can effectively improve the problem of peripheral lighting of a liquid crystal display. The following describes in detail the specific structure of the array substrate provided in each embodiment of the present application with reference to the accompanying drawings.

First embodiment

Fig. 2 shows a top view of an exemplary array substrate provided in the first embodiment of the present application. For convenience of description, the sub-pixels Px in the first display region A1 are omitted in fig. 2, and only the sub-pixels Px in the second display region A2 are shown.

As shown in fig. 2, the array substrate 1 provided in the first embodiment of the present application includes a plurality of sub-pixels Px arranged in an array in a display area AA, where the display area AA includes a first display area A1 and a second display area A2 located on a peripheral side of the first display area A1, and a transmittance of the sub-pixels Px in the second display area A2 is smaller than a transmittance of the sub-pixels Px in the first display area A1.

In the actual product design process, a batch of test samples are firstly manufactured according to the initial design, the position of the second display area A2 is determined, and then the transmittance of the sub-pixels Px in the second display area A2 is adjusted to be smaller than that of the sub-pixels Px in the first display area A1, so that the brightness of the second display area A2 can be reduced, and another batch of test samples can be manufactured. Through multiple adjustment and test, the brightness in the second display area A2 and the brightness in the first display area A1 are kept uniform, and the final product is shaped, so that the problem of peripheral brightening caused by overhigh periphery is solved.

According to the array substrate and the display panel provided by the embodiment of the application, the transmittance of the sub-pixels Px in the second display area A2 positioned on the peripheral side of the first display area A1 is smaller than that of the sub-pixels Px in the first display area A1, so that the problem of peripheral brightness of the liquid crystal display can be effectively improved.

In some embodiments, the second display area A2 is disposed around at least a portion of the peripheral side of the first display area A1, and the second display area A2 includes at least one row or one column of subpixels Px.

As shown in fig. 2, the second display area A2 includes a circle of subpixels Px located at the periphery of the first display area A1, and the transmittance of the circle of subpixels Px is lower than that of the subpixels Px in the first display area A1.

Further, each of the sub-pixels Px includes a plurality of pixel electrodes 11 located in the rectangular pixel area, the plurality of pixel electrodes 11 being arranged in parallel and at intervals, the pixel electrodes 11 being arranged obliquely with respect to the short side direction of the pixel area, wherein the inclination angle of the pixel electrode 11 of the sub-pixel Px in the second display area A2 is smaller than the inclination angle of the pixel electrode 11 of the sub-pixel Px in the first display area A1.

Specifically, the formula for calculating the transmittance of the liquid crystal display panel is:

where T is the transmittance, θ is the liquid crystal alignment angle, Δn is the difference in birefringence, d is the thickness of the liquid crystal layer, and λ is the wavelength of the incident light.

As can be seen from the calculation formula of the transmittance, the transmittance tmax and the brightness are highest when the liquid crystal alignment angle θ=45°. When the liquid crystal orientation angle θ is small, the transmittance is low and the brightness is also lowered. Therefore, when the inclination angle of the pixel electrode 11 of the sub-pixel Px in the second display area A2 is smaller than that of the pixel electrode 11 of the sub-pixel Px in the first display area A1, the transmittance of the sub-pixel Px in the second display area A2 can be made smaller than that of the sub-pixel Px in the first display area A1, and the luminance in the second display area A2 and the luminance in the first display area A1 can be kept uniform, thereby effectively improving the problem of peripheral lighting caused by too high peripheral.

Further, a first included angle θ1 is formed between the pixel electrode 11 of the sub-pixel Px in the second display area A2 and the short side direction of the corresponding pixel area, a second included angle θ2 is formed between the pixel electrode 11 of the sub-pixel Px in the first display area A1 and the short side direction of the corresponding pixel area, the value range of the first included angle is 0< θ1<45 °, the value range of the second included angle is 0< θ2 <45 °, and θ1< θ2.

As shown in fig. 3, the pixel regions are arranged in a rectangular shape, the short side direction is the horizontal direction, and the long side direction is the vertical direction. In order to display brightness, the pixel electrode 11 of the sub-pixel Px in the first display area A1 is disposed at a second included angle θ2 with respect to the short side direction of the corresponding pixel area, the second included angle θ2 may be 45 °, and the pixel electrode 11 of the sub-pixel Px in the second display area A2 is disposed at a first included angle θ1 with respect to the short side direction of the corresponding pixel area, and the first included angle θ1 may be 40 °, so that the display brightness in the second display area A2 may be reduced, and the brightness in the second display area A2 and the brightness in the first display area A1 may be kept uniform.

In addition, since the vertically aligned (Vertical Alignment, abbreviated as VA) lcd panel adopts vertically rotated liquid crystals, the difference of birefringence of liquid crystal molecules is relatively large, resulting in serious color shift (color shift) problem at a large viewing angle. In order to improve the visual angle performance of the panel and improve the color cast problem, a Multi-domain vertical alignment (MVA) technology is generally adopted, that is, one sub-pixel is divided into a plurality of areas, and the liquid crystal in each area is laid down to different directions after voltage is applied, so that the effect seen in each direction tends to be uniform.

In some embodiments, the pixel electrode 11 includes a main electrode 111 and a branch electrode 112 connected to each other, the main electrode 111 divides the pixel area into at least two domains, the branch electrodes 112 in each domain are parallel and spaced apart, and are disposed at a predetermined angle with the main electrode 111, and the directions of the branch electrodes 112 in different domains are different; wherein the branch electrode 112 is disposed obliquely with respect to the short side direction of the pixel region.

As shown in fig. 4, the main electrode 111 of the pixel electrode 11 divides the pixel area into four domains, the branch electrodes 112 in each domain are parallel and spaced apart, and are disposed at a predetermined angle with respect to the main electrode 111, and the directions of the branch electrodes 112 in different domains are distributed in a shape of "m". Wherein the branch electrode 112 is disposed obliquely with respect to the short side direction of the pixel region. The four domains are generally formed by forming slits on the pixel electrode 11 and protrusions on the color film substrate 2, and the liquid crystal molecules have pretilt angles in different directions when no voltage is applied, and after the voltage is applied, the liquid crystal layer 3 can be divided into four liquid crystal microdomains respectively having different tilt directions, so that the display characteristics of a wide viewing angle range are realized.

In order to improve the brightness problem of the surrounding, in this embodiment, the branch electrode 112 of the sub-pixel Px in the first display area A1 is disposed at a second angle θ2 with respect to the short side direction of the corresponding pixel area, the second angle θ2 may be 45 °, and the branch electrode 112 of the sub-pixel Px in the second display area A2 is disposed at a first angle θ1 with respect to the short side direction of the corresponding pixel area, and the first angle θ1 may be 40 °, so that the display brightness in the second display area A2 may be reduced, and the brightness in the second display area A2 and the first display area A1 may be kept uniform.

In order to improve the viewing angle performance of the panel and improve the color cast problem, an MVA-type liquid crystal display panel which does not need an alignment film, called a Polymer-stabilized vertical alignment (PSVA) type liquid crystal display panel, adopts an eight-domain pixel structure, and the eight-domain forming mode is generally that a sub-pixel is divided into a main sub-pixel and a sub-pixel on the basis of the four domains, wherein the main sub-pixel and the sub-pixel respectively have four liquid crystal micro domains, and meanwhile, the driving voltages of the main sub-pixel and the sub-pixel are different, so that the color cast can be further improved and a large viewing angle range can be obtained. That is, the eight-domain pixel structure corresponds to the sub-pixel Px shown in fig. 4, which only shows the pixel electrode of the main sub-pixel, and the sub-pixel Px further includes the pixel electrode of the sub-pixel having four domains, and the pixel electrode of the sub-main pixel is aligned with the pixel electrode of the sub-pixel in the vertical direction. The inclination angle of the branch electrode 112 in the sub-pixel electrode is identical to the inclination angle of the branch electrode 112 in the main pixel electrode, and will not be described again.

For convenience of description below, when the pixel structure is multi-domain, the inclination angle between the branch electrode 112 of the sub-pixel Px in the second display region A2 and the short side direction of the corresponding pixel region may be consistent with the description of the single-domain pixel structure, i.e., the inclination angle of the pixel electrode 11 of the sub-pixel Px in the second display region A2 is uniformly described.

Fig. 5 shows a cross-sectional view of the region M in fig. 4.

As shown in fig. 5, the array substrate 1 includes a first substrate 10, a first metal layer 12, an insulating layer 13 and a conductive layer where the pixel electrode 11 is located, which are located on the first substrate 10, where the material of the first substrate 10 may be a glass substrate or polyimide PI, the material of the first metal layer 12 includes a first common electrode (a-com), the material of the insulating layer 13 may be a PV layer, and the material of the conductive layer where the pixel electrode 11 is located may be transparent indium tin oxide ITO.

Fig. 6 shows a top view of another example array substrate provided in the first embodiment of the present application.

In some embodiments, the second display area A2 is disposed around the peripheral side of the first display area A1, the second display area A2 includes at least two circles of sub-pixels Px, and the transmittance of each circle of sub-pixels Px gradually decreases as the distance from the second display area A1 increases.

The number of subpixels Px in the second display region A2 may be determined according to the size of the peripheral light emitting area. If the peripheral light emitting area is small, the inclination angle of the pixel electrode 11 of only one circle of the sub-pixels Px at the periphery may be made small, for example, 40 °, whereas the inclination angle of the pixel electrode 11 of the sub-pixel Px in the first display area A1 is 45 °. As shown in fig. 6, if the peripheral area is large, the sub-pixels Px of the second display area A2 may be increased to two or more turns, particularly depending on the actual peripheral situation.

When the second display area A2 includes at least two circles of sub-pixels Px, in order to avoid color shift caused by excessive angle difference, different angle transitions may be used, that is, the transmittance of each circle of sub-pixels Px gradually decreases as the distance from the first display area A1 increases.

Specifically, the transmittance of the entire-circle sub-pixel Px in the second display region A2 is smaller as the distance from the first display region A1 is longer, and the transmittance of the corresponding entire-circle sub-pixel Px is gradually increased as the distance from the first display region A1 is shorter. That is, the inclination angle of the pixel electrode 11 of the outermost full-turn sub-pixel Px in the second display region A2 is smallest, and the inclination angle of the corresponding full-turn sub-pixel Px gradually increases as the distance from the first display region A1 is closer.

Further, the second display area A2 includes at least two circles of sub-pixels Px, and the inclination angle of the pixel electrode 11 of each circle of sub-pixels Px becomes gradually smaller as the distance thereof from the first display area A1 becomes larger.

As shown in fig. 6, the inclination angle of the pixel electrode 11 of the sub-pixel Px of the first display area A1 is θ1=45°, the second display area A2 includes three circles of sub-pixels Px, wherein the inclination angle of the pixel electrode 11 of the sub-pixel Px of the innermost circle is θ21=42°, the inclination angle of the pixel electrode 11 of the sub-pixel Px of the middle circle is θ22=40°, and the inclination angle of the pixel electrode 11 of the sub-pixel Px of the outermost circle is θ23=35°, thereby preventing significant color shift from being generated due to too large deviation of the inclination angles of the pixel electrodes 11 of the respective circles.

It should be noted that, the sub-pixel Px of the array substrate 1 shown in fig. 6 may be Shan Chouzi pixels, or may be a dual-domain sub-pixel, a four-domain sub-pixel, or an eight-domain sub-pixel, which will not be described again depending on the specific product.

Second embodiment

Fig. 7 shows a top view of an array substrate according to a second embodiment of the present application.

As shown in fig. 7, the array substrate 1 provided in the second embodiment of the present application is similar to the array substrate 1 shown in the first embodiment, except that the second display area A2 is different in position in the display area AA.

Specifically, the binding area B of the array substrate 1 on one side of the display area AA is coated with, for example, a black sealant to avoid light leakage, so that the problem of lighting on the side of the binding area B can be solved, so that the inclination angle of the pixel electrode 11 of at least one row of sub-pixels Px corresponding to the side of the binding area B can be kept consistent with the inclination angle of the pixel electrode 11 of the sub-pixels Px in the first display area A1, and the inclination angle of the pixel electrode 11 of at least one row or one column of sub-pixels Px corresponding to the other peripheral sides except the side of the binding area B can be smaller than the inclination angle of the pixel electrode 11 of the sub-pixels Px in the first display area A1, so that the brightness of the Zhou Cedi two display areas A2 and the first display area A1 can be kept consistent as a whole.

Third embodiment

Fig. 8 shows a top view of an array substrate according to a third embodiment of the present application.

As shown in fig. 8, the array substrate 1 provided in the third embodiment of the present application is similar to the array substrate 1 shown in the first embodiment, except that the second display area A2 is different in position in the display area AA.

Specifically, the second display area A2 is located at a plurality of corners of the first display area A1, and the corners include at least three sub-pixels Px of different colors. Since the frame glue generally has coating overlapping at the corners during packaging, the frame glue at the positions is slightly raised, so that the height difference between the corners and the display surface is more obvious, i.e. the problem of brightening at the corners is more obvious. As shown in fig. 8, the second display area A2 is located at four corners of the first display area A1, and the area of the second display area at each corner may be the same or different. For example, the second display area A2 in the upper left corner in fig. 8 includes 6 sub-pixels in 2 rows and 3 columns, the second display area A2 in the upper right corner includes 12 sub-pixels in 2 rows and 6 columns, the second display area A2 in the lower left corner includes 27 sub-pixels in 3 rows and 9 columns, and the second display area A2 in the lower right corner includes 64 sub-pixels in 4 rows and 16 columns.

In one example, the at least three subpixels Px of different colors at the corners may include a red subpixel, a green subpixel, and a blue subpixel. In other examples, the at least three subpixels Px of different colors at the corners may further include a yellow subpixel or a white subpixel.

Further, as shown in fig. 3 and 4, each subpixel Px includes a plurality of pixel electrodes 11 located in a rectangular pixel area, the plurality of pixel electrodes 11 are parallel and arranged at intervals, and the pixel electrodes 11 are arranged obliquely with respect to the short side direction of the pixel area, wherein the inclination angle of the pixel electrode 11 of the subpixel Px in the second display area A2 at the corner is smaller than the inclination angle of the pixel electrode 11 of the subpixel Px in the first display area A1, so as to achieve the effect of reducing the transmittance of the peripheral second display area.

In addition, it should be noted that the sub-pixel Px of the array substrate 1 shown in fig. 8 may be Shan Chouzi pixels, or may be two-domain sub-pixels, four-domain sub-pixels, or eight-domain sub-pixels, which are not described again according to specific products.

Fourth embodiment

Fig. 9 shows a top view of an array substrate provided in a fourth embodiment of the present application.

As shown in fig. 9, the array substrate 1 provided in the fourth embodiment of the present application is similar to the array substrate 1 shown in the third embodiment, except that the second display area A2 is different in position in the display area AA.

Specifically, the binding area B of the array substrate 1 at one side of the display area AA is coated with, for example, a black sealant to avoid light leakage, so that the problem of corner lighting corresponding to the side where the binding area B is located can be solved, so that the inclination angle of the pixel electrode 11 of the sub-pixel Px at, for example, two corners corresponding to the side where the binding area B is located can be kept consistent with the inclination angle of the pixel electrode 11 of the sub-pixel Px in the first display area A1, and the inclination angle of the pixel electrode 11 of the sub-pixel Px at, for example, two corners corresponding to other peripheral sides except the side where the binding area B is located can be smaller than the inclination angle of the pixel electrode 11 of the sub-pixel Px in the first display area A1, so that the brightness of the second display area A2 at the corners and the first display area A1 can be kept consistent as a whole.

Fifth embodiment

Fig. 10 shows a top view of an array substrate provided in a fifth embodiment of the present application.

As shown in fig. 10, the array substrate 1 provided in the fifth embodiment of the present application is similar to the array substrate 1 shown in the first embodiment or the third embodiment, and is different in that the inclination angle of the pixel electrode 11 of each sub-pixel Px corresponding to the second display region A2 and the first display region A1 is the same, but the ratio between the line width and the pitch of the pixel electrode is different.

Specifically, as the width of the pixel electrode 11 is smaller, the area of the electric field lines on the pixel electrode 11 is smaller, resulting in a decrease in electric field strength and a decrease in transmittance. Thus, each sub-pixel Px includes a plurality of pixel electrodes 11 located in the rectangular pixel area, and the plurality of pixel electrodes 11 are arranged in parallel and at intervals, wherein a first ratio of the line width L to the space S of the pixel electrode 11 of the sub-pixel Px in the second display area A2 is smaller than a second ratio of the line width to the space of the pixel electrode 11 of the sub-pixel Px in the first display area A1. In this embodiment, the pixel electrodes of the second display area A2 and the first display area A1 have different line widths and different pitches, so as to reduce the transmittance of the second display area A2.

In some embodiments, the second display area A2 includes a circle of sub-pixels Px, and the line width l=3.5 mm and the space s=2.5 mm of the pixel electrode 11 of the sub-pixel Px in the first display area A1 are: l/s=3.5/2.5. The second display area A2 includes a circle of sub-pixels Px, the line width l=3.3 mm and the space s=2.7 mm of the pixel electrode 11 of the circle of sub-pixels Px, and the first ratio is: l/s=3.3/2.7, so that the transmittance of the second display area A2 can be further reduced, the display brightness in the second display area A2 is reduced, and the problem of inconsistent brightness in the second display area A2 and the first display area A1 is effectively solved.

In some embodiments, the second display area A2 includes at least two circles of sub-pixels Px, and the ratio of the line width L to the space S of the pixel electrode 11 of each circle of sub-pixels Px gradually decreases as the distance from the first display area A1 increases.

As shown in fig. 10, the second display area A2 includes two circles of sub-pixels Px, wherein a ratio of a line width L to a space S of the sub-pixels Px in the first display area A1 is: the ratio of the line width L to the space S of a circle of sub-pixels Px of the second display area A2, which is close to the first display area A1, is L/s=3.5/2.5, and the ratio of the line width L to the space S of the outermost circle of sub-pixels Px is: l/s=3/3. By doing so, on the one hand, the transmittance can be reduced by adjusting the L/S of the pixel electrode 11, and on the other hand, the luminance display unevenness due to the too large L/S variation span of the pixel electrode 11 can be avoided.

In addition, it can be understood that the sub-pixel Px in the present embodiment may be a single-domain pixel structure or a multi-domain pixel structure, such as a dual-domain, a four-domain, an eight-domain, and the like, which will not be described herein.

Sixth embodiment

As shown in fig. 11, the array substrate 1 provided in the sixth embodiment of the present application is similar to the structure of the array substrate 1 shown in the fifth embodiment, that is, the first ratio of the line width L to the pitch S of the pixel electrode 11 of the sub-pixel Px in the second display area A2 is smaller than the second ratio of the line width to the pitch of the pixel electrode 11 of the sub-pixel Px in the first display area A1, and is different in that the inclination angle θ1 of the pixel electrode 11 of the sub-pixel Px in the second display area A2 is smaller than the inclination angle θ2 of the pixel electrode 11 of the sub-pixel Px in the first display area A1.

In some embodiments, the second display area A2 includes a circle of sub-pixels Px, and the inclination angle θ1 of the pixel electrode 11 of the sub-pixel Px in the second display area A2 may be smaller than the inclination angle θ2 of the pixel electrode 11 of the sub-pixel Px in the first display area A1. As shown in fig. 11, the first included angle θ1 may be 45 °, and the second included angle θ2 may be 45 °.

Meanwhile, the line width l=3.3 mm and the space s=2.7 mm of the pixel electrode 11 of one circle of the sub-pixels Px in the second display area A2, the first ratio is: l/s=3.3/2.7, the line width l=3.5 mm, and the pitch s=2.5 mm of the pixel electrode 11 of the subpixel Px in the first display region A1, then the second ratio is: l/s=3.5/2.5. Therefore, the transmittance of the second display area A2 can be further reduced, the display brightness in the second display area A2 is reduced, and the problem of inconsistent brightness between the second display area A2 and the first display area A1 is effectively solved.

In some embodiments, the second display area A2 includes at least two circles of sub-pixels Px, as shown in fig. 6, and the inclination angle of the pixel electrode 11 of each circle of sub-pixels Px gradually decreases as the distance from the first display area A1 increases.

Meanwhile, as shown in fig. 10, the ratio of the line width L to the space S of the pixel electrode 11 of at least two circles of the sub-pixels Px of the second display region A2 becomes gradually smaller as the distance thereof from the first display region A1 becomes larger.

It is understood that, when the second display area A2 is located at a plurality of corners of the first display area, the corners include at least three sub-pixels of different colors, and the inclination angle θ1 of the pixel electrode 11 of the sub-pixel Px in the corresponding second display area A2 may be smaller than the inclination angle θ2 of the pixel electrode 11 of the sub-pixel Px in the first display area A1, and at the same time, the first ratio of the line width L of the pixel electrode 11 of the sub-pixel Px to the space S is smaller than the second ratio of the line width of the pixel electrode 11 of the sub-pixel Px in the first display area A1.

In addition, when the binding area B of the array substrate 1 on the side of the display area AA is coated with, for example, a black sealant to avoid light leakage, the inclination angle of the pixel electrode 11 of the sub-pixel Px on the side or corner of the binding area B may be smaller than that of the pixel electrode 11 of the sub-pixel Px in the first display area A1, and at the same time, the first ratio of the line width L of the pixel electrode 11 of the sub-pixel Px to the space S is smaller than the second ratio of the line width of the pixel electrode 11 of the sub-pixel Px in the first display area A1, which will not be described again.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this application should be interpreted in the broadest sense such that "on … …" means not only "directly on something" but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes the meaning of "not only" on something "or" above "but also" above "or" above "without intermediate features or layers therebetween (i.e., directly on something).

The term "substrate base" as used herein refers to a material to which subsequent layers of material are added. The substrate itself may be patterned. The material added atop the substrate base plate may be patterned or may remain unpatterned. In addition, the substrate base may comprise a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, and the like. Alternatively, the substrate base plate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).

The term "layer" as used herein may refer to a portion of material that includes regions having a certain thickness. The layer may extend over the entire underlying or overlying structure, or may have a range that is less than the range of the underlying or overlying structure. Further, the layer may be a region of a continuous structure, either homogenous or non-homogenous, having a thickness less than the thickness of the continuous structure. For example, the layer may be located between the top and bottom surfaces of the continuous structure or between any pair of lateral planes at the top and bottom surfaces. The layers may extend laterally, vertically and/or along a tapered surface. The substrate base may be a layer, may include one or more layers therein, and/or may have one or more layers located thereon, and/or thereunder. The layer may comprise a plurality of layers. For example, the interconnect layer may include one or more conductors and contact layers (within which contacts, interconnect lines, and/or vias are formed) and one or more dielectric layers.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The array substrate comprises a plurality of sub-pixels which are arranged in an array manner in a display area, and is characterized in that the display area comprises a first display area and a second display area which is positioned on the periphery of the first display area, and the penetration rate of the sub-pixels in the second display area is smaller than that of the sub-pixels in the first display area.

2. The array substrate of claim 1, wherein the second display region is disposed around at least a portion of a peripheral side of the first display region, and the second display region includes at least one row or column of subpixels.

3. The array substrate of claim 1, wherein the second display area is located at a plurality of corners of the first display area, the corners including at least three sub-pixels of different colors.

4. The array substrate of any one of claims 1 to 3, wherein each of the sub-pixels includes a plurality of pixel electrodes located in a rectangular pixel region, the plurality of pixel electrodes being disposed in parallel and at intervals, the pixel electrodes being disposed obliquely with respect to a short side direction of the pixel region, wherein an angle of inclination of the pixel electrodes of the sub-pixels in the second display region is smaller than an angle of inclination of the pixel electrodes of the sub-pixels in the first display region.

5. The array substrate of claim 4, wherein a first included angle θ1 is formed between the pixel electrode of the sub-pixel in the second display area and the short side direction of the corresponding pixel area, a second included angle θ2 is formed between the pixel electrode of the sub-pixel in the first display area and the short side direction of the corresponding pixel area, the value range of the first included angle θ1 is 0< θ1<45 °, the value range of the second included angle θ2 is 0< θ2 <45 °, and θ1< θ2.

6. The array substrate of claim 5, wherein the second display region is disposed around a peripheral side of the first display region, the second display region includes at least two circles of sub-pixels, and an inclination angle of the pixel electrode of each circle of sub-pixels becomes gradually smaller as a distance thereof from the first display region becomes larger.

7. The array substrate of any one of claims 1 to 3, wherein each of the sub-pixels includes a plurality of pixel electrodes located in a rectangular pixel region, the plurality of pixel electrodes being disposed in parallel and spaced apart, wherein a first ratio of a line width to a pitch of the pixel electrodes of the sub-pixels in the second display region is smaller than a second ratio of the line width to the pitch of the pixel electrodes of the sub-pixels in the first display region.

8. The array substrate of claim 7, wherein the second display region is disposed around a peripheral side of the first display region, the second display region includes at least two circles of sub-pixels, and a ratio of a line width to a pitch of the pixel electrode of each circle of sub-pixels becomes gradually smaller as a distance thereof from the first display region becomes larger.

9. The array substrate of claim 4, wherein the pixel electrode comprises a main electrode and a branch electrode which are connected with each other, the main electrode divides the pixel area into at least two domains, the branch electrodes in each domain are parallel and spaced, and are arranged at a preset included angle with the main electrode, and the directions of the branch electrodes in different domains are different; wherein the branch electrode is disposed obliquely with respect to a short side direction of the pixel region.

10. A display panel, comprising:

the array substrate of any one of claims 1 to 9;

the color film substrate is arranged opposite to the array substrate; and

the liquid crystal layer is arranged between the array substrate and the color film substrate.