Substrate, display panel, preparation method thereof, and display device

Abstract

A display panel includes a plurality of sub-pixels, each of the plurality of sub-pixels including a plurality of domains and a first dark stripe region, the plurality of sub-pixels including a first sub-pixel and a second sub-pixel, the first sub-pixel capable of emitting light of a different color than the second sub-pixel. The display panel includes a first substrate and a second substrate disposed opposite each other, a liquid crystal layer, a first alignment layer, and a second alignment layer. The liquid crystal layer is between the first substrate and the second substrate. The first alignment layer is between the liquid crystal layer and the first substrate, and the second alignment layer is between the liquid crystal layer and the second substrate.

Description

Substrate, display panel and its manufacturing method, display device Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a substrate, a display panel, a method for preparing the same, and a display device. Background Technology

[0002] Liquid crystal display (LCD) panels have been widely used in various electronic products.

[0003] A liquid crystal display panel mainly includes an array substrate, a color filter substrate, and a liquid crystal layer located between the array substrate and the color filter substrate. Alignment films are provided on both sides of the liquid crystal layer. The function of the alignment films is to generate a pretilt angle for the liquid crystal molecules. Summary of the Invention

[0004] On one hand, a display panel is provided, the display panel including a plurality of sub-pixels, each sub-pixel including a plurality of domain regions and a first dark pattern region, the plurality of sub-pixels including a first sub-pixel and a second sub-pixel, wherein the color of light emitted by the first sub-pixel is different from the color of light emitted by the second sub-pixel. The display panel includes: a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer, a first alignment layer and a second alignment layer. The liquid crystal layer is located between the first substrate and the second substrate. The first alignment layer is located between the liquid crystal layer and the first substrate, and the second alignment layer is located between the liquid crystal layer and the second substrate.

[0005] In some embodiments, the first alignment layer includes a first type of alignment region corresponding to the first sub-pixel and a second type of alignment region corresponding to the second sub-pixel. Both the first type of alignment region and the second type of alignment region include a first sub-region corresponding to the first dark texture region. The width of the first sub-region in the first type of alignment region is smaller than the width of the first sub-region in the second type of alignment region.

[0006] In some embodiments, the liquid crystal layer includes a first portion corresponding to the first sub-pixel and a second portion corresponding to the second sub-pixel. When the display panel is in a bright state, the light transmittance of the first portion of the liquid crystal layer is greater than the light transmittance of the second portion of the liquid crystal layer.

[0007] In some embodiments, each sub-pixel further includes a second dark smudge region, where the first and second dark smudge regions intersect, dividing the region corresponding to the sub-pixel into the plurality of domain regions. The second alignment layer includes a third type of alignment region corresponding to the first sub-pixel and a fourth type of alignment region corresponding to the second sub-pixel. Both the third and fourth type of alignment regions include a second sub-region corresponding to the second dark smudge region. The width of the second sub-region in the third type of alignment region is smaller than the width of the second sub-region in the fourth type of alignment region.

[0008] In some embodiments, both the third type of alignment region and the fourth type of alignment region include: a third sub-region and a fourth sub-region located on opposite sides of the second sub-region along the second direction. The alignment direction of the third sub-region is opposite to that of the fourth sub-region. In two adjacent sub-pixels along the second direction, the two third sub-regions are arranged opposite each other, and the two fourth sub-regions are arranged opposite each other.

[0009] In some embodiments, both the third type of alignment region and the fourth type of alignment region include: a third sub-region and a fourth sub-region located on opposite sides of the second sub-region along the second direction. The alignment direction of the third sub-region is opposite to that of the fourth sub-region. Two adjacent sub-pixels along the second direction constitute a sub-pixel unit. In one of the two adjacent sub-pixel units, the two third sub-regions are arranged opposite each other, and the two fourth sub-regions are arranged opposite each other.

[0010] In some embodiments, each sub-pixel further includes a third dark texture area. The third dark texture area is located at a portion of the edge of the sub-pixel. The third dark texture area includes: a first sub-dark texture area and a second sub-dark texture area located on opposite sides of the first dark texture area and connected to the first dark texture area, and a third sub-dark texture area and a fourth sub-dark texture area located on opposite sides of the second dark texture area and connected to the second dark texture area. The sub-pixel unit includes a first type of sub-pixel and a second type of sub-pixel; the area of ​​the orthographic projection of the first type of sub-pixel onto the plane of the display panel is smaller than the area of ​​the orthographic projection of the second type of sub-pixel onto the plane of the display panel. Two adjacent sub-pixel units include a first sub-pixel unit and a second sub-pixel unit. The shape of the dark crease area formed by the first, second, and third dark crease areas of the second type of sub-pixels in the first sub-pixel unit is different from the shape of the dark crease area formed by the first, second, and third dark crease areas of the second type of sub-pixels in the second sub-pixel unit; and / or, the shape of the dark crease area formed by the first, second, and third dark crease areas of the first type of sub-pixels in at least one sub-pixel unit is different from the shape of the dark crease area formed by the first, second, and third dark crease areas of the second type of sub-pixels in the first sub-pixel unit.

[0011] In some embodiments, the shape of the dark texture area formed by the first dark texture area, the second dark texture area and the third dark texture area of ​​the second sub-pixel in the first sub-pixel unit includes the shape of the figure "8", and the shape of the dark texture area formed by the first dark texture area, the second dark texture area and the third dark texture area of ​​the second type of sub-pixel in the second sub-pixel unit includes the shape of the swastika.

[0012] In some embodiments, the shape of the dark texture area formed by the first dark texture area, the second dark texture area, and the third dark texture area of ​​the first sub-pixel in the first sub-pixel unit includes a swastika shape. The shape of the dark texture area formed by the first dark texture area, the second dark texture area, and the third dark texture area of ​​the first sub-pixel in the second sub-pixel unit includes a swastika shape.

[0013] In some embodiments, the first sub-pixel can emit light of either red or green. The second sub-pixel can emit light of either blue.

[0014] In some embodiments, the first substrate includes an array substrate. The array substrate includes a substrate, and a gate layer, a first dielectric layer, a source / drain conductive layer, and a second dielectric layer stacked on the substrate, wherein the first dielectric layer is closer to the substrate than the second dielectric layer. The thickness range of the first dielectric layer is: The thickness range of the second dielectric layer is:

[0015] In some embodiments, the array substrate further includes a pixel electrode layer located on the side of the second dielectric layer away from the substrate, and the second substrate includes a common electrode.

[0016] In some embodiments, the material of the first dielectric layer is the same as the material of the second dielectric layer.

[0017] In some embodiments, the array substrate further includes a third dielectric layer located between the first dielectric layer and the second dielectric layer. The refractive index of the third dielectric layer is less than that of the first dielectric layer.

[0018] In some embodiments, the display panel further includes a first polarizer. The first polarizer is located on the side of the first substrate away from the first alignment layer. The in-plane compensation value of the first polarizer ranges from 45 nm to 60 nm.

[0019] In some embodiments, the display panel further includes a second polarizer. The second polarizer is located on the side of the second substrate away from the first alignment layer. The in-plane compensation value of the second polarizer ranges from 45 nm to 60 nm.

[0020] On the other hand, a method for fabricating a display panel is also provided, comprising: forming a first alignment layer on a first substrate; performing photoalignment on the first alignment layer to form a plurality of first-type alignment regions and a plurality of second-type alignment regions; each of the first-type alignment regions and the second-type alignment regions includes a first sub-region, wherein the width of the first sub-region in the first-type alignment region is smaller than the width of the first sub-region in the second-type alignment region; and forming a liquid crystal layer. The liquid crystal layer includes a plurality of first portions and a plurality of second portions. The first portions are at least partially opposite to the first-type alignment regions, and the second portions are at least partially opposite to the second-type alignment regions. The first portions and their corresponding first-type alignment regions constitute a part of a first sub-pixel, and the second portions and their corresponding second-type alignment regions constitute a part of a second sub-pixel. The color of the light emitted by the first sub-pixel is different from the color of the light emitted by the second sub-pixel.

[0021] In some embodiments, both the first type of alignment region and the second type of alignment region include a fifth sub-region and a sixth sub-region located on opposite sides of the first sub-region along a first direction. The photoalignment of the first alignment layer includes: performing a first alignment of the first type of alignment region using a first photomask and first polarized light to complete the alignment of the fifth sub-region of the first type of alignment region. The first photomask includes a first light-blocking region and a first light-transmitting region, the area of ​​the first light-transmitting region being larger than the area of ​​the first light-blocking region. The first sub-region and the fifth sub-region are directly opposite to the first light-transmitting region, and the sixth sub-region is directly opposite to the first light-blocking region. A second alignment of the first type of alignment region is performed using a second photomask and second polarized light to complete the alignment of the sixth sub-region of the first type of alignment region. The second photomask includes a second light-blocking region and a second light-transmitting region, the area of ​​the second light-transmitting region being larger than the area of ​​the second light-blocking region. The first sub-region and the sixth sub-region are directly opposite to the second light-transmitting region, and the fifth sub-region is directly opposite to the second light-blocking region. The alignment direction of the fifth sub-region is opposite to the alignment direction of the sixth sub-region.

[0022] In some embodiments, the distance between the boundary line between the first light-shielding area and the first light-transmitting area in the first photomask and the boundary line between the second light-shielding area and the second light-transmitting area in the second photomask in the first direction is 0 μm to 10 μm.

[0023] In some embodiments, both the first type of alignment region and the second type of alignment region include: a fifth sub-region and a sixth sub-region located on opposite sides of the first sub-region along a first direction. The optical alignment of the first alignment layer includes:

[0024] Using a third photomask and first polarized light, the second type of alignment region is first aligned, completing the alignment of the fifth sub-region of the second type of alignment region. The third photomask includes a third light-blocking region and a third light-transmitting region, the area of ​​which is smaller than the area of ​​which is the third light-blocking region. The fifth sub-region is directly opposite to the first light-transmitting region, and the sixth sub-region and the first sub-region are directly opposite to the third light-blocking region. Using a fourth photomask and second polarized light, the second type of alignment region is second aligned, completing the alignment of the sixth sub-region of the second type of alignment region. The fourth photomask includes a fourth light-blocking region and a fourth light-transmitting region, the area of ​​which is smaller than the area of ​​which is the fourth light-blocking region. The sixth sub-region is directly opposite to the fourth light-transmitting region, and the first and fifth sub-regions are directly opposite to the fourth light-blocking region. The alignment direction of the fifth sub-region is opposite to that of the sixth sub-region.

[0025] In another aspect, a display device is also provided, comprising: a display panel as described in any of the above embodiments, and a backlight module located on the non-light-emitting side of the display panel.

[0026] In another aspect, a substrate is also provided for use in a display panel. The substrate includes a substrate and an alignment layer disposed on the substrate. The alignment layer includes a first type of alignment region corresponding to a first sub-pixel in the display panel and a second type of alignment region corresponding to a second sub-pixel in the display panel. Both the first type of alignment region and the second type of alignment region include a first sub-region corresponding to a first dark pattern region in the display panel. The width of the first sub-region in the first type of alignment region is smaller than the width of the first sub-region in the second type of alignment region. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual process of the method, etc. involved in the embodiments of this disclosure.

[0028] Figure 1 is a schematic diagram of a display device according to some embodiments of the present disclosure;

[0029] Figure 2 is a structural diagram of a display panel according to some embodiments of the present disclosure;

[0030] Figure 3 is a structural diagram of another display device according to some embodiments of the present disclosure;

[0031] Figure 4 is a structural diagram of another display device according to some embodiments of the present disclosure;

[0032] Figure 5A is a structural diagram of a sub-pixel according to some embodiments of the present disclosure;

[0033] Figure 5B is a schematic diagram of a sub-pixel displaying an image from a positive viewing angle according to some embodiments of the present disclosure;

[0034] Figure 5C is a schematic diagram of a sub-pixel displaying an image at a wide viewing angle according to some embodiments of the present disclosure;

[0035] Figure 6 is a structural diagram of another display panel according to some embodiments of the present disclosure;

[0036] Figure 7 is a structural diagram of a first alignment layer according to some embodiments of the present disclosure;

[0037] Figure 8 is a structural diagram of a liquid crystal layer according to some embodiments of the present disclosure;

[0038] Figure 9 is a structural diagram of a second alignment layer according to some embodiments of the present disclosure;

[0039] Figure 10 is another seed pixel structure diagram according to some embodiments of the present disclosure;

[0040] Figure 11 is a structural diagram of another second alignment layer according to some embodiments of the present disclosure;

[0041] Figure 12 is a structural diagram of another sub-pixel according to some embodiments of the present disclosure;

[0042] Figure 13 is a structural diagram of yet another second alignment layer according to some embodiments of the present disclosure;

[0043] Figure 14 is a structural diagram of yet another sub-pixel according to some embodiments of the present disclosure;

[0044] Figure 15 is a structural diagram of a dark textured area according to some embodiments of the present disclosure;

[0045] Figure 16 is a structural diagram of yet another display panel according to some embodiments of the present disclosure;

[0046] Figure 17 is a schematic diagram of four different display panels in a dark state with a wide viewing angle according to some embodiments of the present disclosure;

[0047] Figure 18 is a schematic diagram of two different display panels in a dark state with a wide viewing angle according to some embodiments of the present disclosure;

[0048] Figure 19 is a schematic diagram of the display images of three different display panels in a dark state with a wide viewing angle according to some embodiments of the present disclosure;

[0049] Figure 20 is a Bonga sphere diagram showing light leakage in a display panel according to one implementation method;

[0050] Figure 21 is a Bonga sphere diagram of light leakage in a display panel according to some embodiments of the present disclosure;

[0051] Figure 22 is a flowchart illustrating the fabrication process of a display panel according to some embodiments of the present disclosure;

[0052] Figure 23 is a structural diagram of a display panel during the manufacturing process according to some embodiments of the present disclosure;

[0053] Figure 24 is another structural diagram of a display panel during the manufacturing process according to some embodiments of the present disclosure;

[0054] Figure 25 is another structural diagram of a display panel during the manufacturing process according to some embodiments of the present disclosure;

[0055] Figure 26 is a structural diagram of a substrate according to some embodiments of the present disclosure. Detailed Implementation

[0056] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0057] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0058] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0059] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0060] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0061] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0062] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0063] As used herein, "perpendicular" and "equal" include the described situation and situations that are similar to the described situation, within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity could be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality could be, for example, a difference between the two equalities less than or equal to 5% of either one.

[0064] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0065] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0066] As shown in Figure 1, some embodiments of this disclosure provide a display device 1. This display device 1 can be any display device that displays either moving (e.g., video) or stationary (e.g., still images), and whether it is text or images. More specifically, the display device of the described embodiments is contemplated for implementation in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0067] For example, the above-mentioned display device 1 includes: a frame, a display driver IC (Integrated Circuit), and other electronic components.

[0068] In some embodiments, as shown in FIG1, the display device 1 further includes a display panel 3.

[0069] In some examples, the display panel 3 described above can be an LCD display panel.

[0070] For example, the driving method of the display panel 3 can be an active matrix (AM) driving method. When the driving method of the display panel 3 is an active matrix driving method, the display panel 3 can be, for example, a thin film transistor liquid crystal display (TFT-LCD).

[0071] In the embodiments of this disclosure, the display panel 3 can be of VA (Vertical Alignment) display type.

[0072] For example, as shown in Figure 2, the display panel 3 may include an array substrate 31, a liquid crystal layer 34, and a color filter substrate 33 stacked in sequence.

[0073] For example, the array substrate 31 may include a substrate 301, and a pixel circuit layer 302 and a pixel electrode layer 303 located on one side of the substrate 301. The pixel circuit layer 302 includes a plurality of pixel driving circuits 312, and the pixel electrode layer 303 includes a plurality of pixel electrodes 311 spaced apart. The plurality of pixel electrodes 311 are electrically connected to the plurality of pixel driving circuits 312, and the pixel driving circuits 312 provide pixel voltages to the corresponding pixel electrodes 311.

[0074] As exemplarily shown in FIG2, the display panel 3 further includes a common electrode 304. The common electrode 304 may be disposed on the color filter substrate 33.

[0075] For example, the liquid crystal layer 34 includes a plurality of liquid crystal molecules. An electric field can be formed between the pixel electrode 311 and the common electrode 304, and the liquid crystal molecules located between the pixel electrode 311 and the common electrode 304 can be deflected under the action of the electric field.

[0076] For example, the color filter substrate 33 includes a variety of color filters. For instance, when the light incident on the color filters is white light, the color filters may include a red filter, a green filter, and a blue filter. The red filter allows only red light in the incident light to pass through, the green filter allows only green light in the incident light to pass through, and the blue filter allows only blue light in the incident light to pass through.

[0077] The color filter substrate 33 also includes a black matrix. The black matrix can be used to prevent light mixing.

[0078] As shown in Figure 3, the display device 1 further includes a backlight module 2. The backlight module 2 is located on the non-light-emitting side of the display panel 3. The backlight module 2 provides backlight to the display panel 3.

[0079] Understandably, the backlight provided by the backlight module 2 can pass through the array substrate 31 and be incident on the liquid crystal molecules in the liquid crystal layer 34. Under the action of the electric field formed between the pixel electrode 311 and the common electrode 304, the liquid crystal molecules undergo a certain degree of flipping, thereby changing the polarization direction of the light passing through the liquid crystal molecules. The light then passes through the color filters of different colors in the color filter substrate 33 and is emitted. The emitted light includes various colors of light, such as red light, green light, and blue light. The various colors of light work together to enable the display panel 3 and the display device 1 to achieve color display.

[0080] For example, the backlight module 2 can be a direct-lit backlight module or a side-lit backlight module.

[0081] In some examples, as shown in Figure 4, the display panel 3 includes a plurality of sub-pixels 32, which emit light under the action of the voltage difference provided by the pixel electrode 311 and the common electrode 304.

[0082] For example, the plurality of sub-pixels 32 includes: a first sub-pixel 3201 and a second sub-pixel 3202. The color of the light emitted by the first sub-pixel 3201 is different from the color of the light emitted by the second sub-pixel 3202. For example, if the backlight module emits white light, the color filter corresponding to the first sub-pixel 3201 is different from the color filter corresponding to the second sub-pixel 3202.

[0083] For example, multiple first sub-pixels 3201 are arranged in multiple columns, and multiple second sub-pixels 3202 are arranged in multiple columns. The multiple columns of first sub-pixels 3201 and multiple columns of second sub-pixels 3202 are arranged alternately.

[0084] As shown in Figure 5A, each sub-pixel 32 includes multiple domain regions 321 and dark pattern regions 322. For example, each sub-pixel 32 includes four domain regions 321. The liquid crystal molecules corresponding to the same domain region 321 have the same orientation, while the liquid crystal molecules corresponding to different domain regions 321 have different orientations.

[0085] For example, the liquid crystal molecules located in the dark texture region 322 are situated between the liquid crystal molecules in two adjacent domain regions 321. Due to the different alignment directions of the two adjacent domain regions 321, the alignment forces experienced by each liquid crystal molecule in the dark texture region 322 are different. As a result, the orientation of the liquid crystal molecules is relatively disordered, and the light transmittance is low or almost opaque.

[0086] The aforementioned dark texture area 322 includes a first dark texture area 3221 and a second dark texture area 3222. The shape of the first dark texture area 3221 can be rectangular or approximately rectangular, and the shape of the second dark texture area 3222 can also be rectangular or approximately rectangular. For example, the first dark texture area 3221 extends approximately along the second direction Y, and the second dark texture area 3222 extends approximately along the first direction X. The first dark texture area 3221 and the second dark texture area 3222 intersect, dividing the sub-pixel 32 into four domain areas 321. For example, the intersection of the first dark texture area 3221 and the second dark texture area 3222 is located near their respective axes of symmetry.

[0087] In one possible implementation, the liquid crystal arrangement in the dark pattern area of ​​the sub-pixel is relatively disordered. When the display panel is in a dark state, at a wide viewing angle, the liquid crystal in the dark pattern area 322' can transmit a small amount of light and be displayed as dark patterns (refer to Figure 5C, Figure 5B is a schematic diagram of the sub-pixel display at a normal viewing angle), resulting in light leakage. This causes the dark state display to exhibit a color tint at a wide viewing angle and makes the dark state displayed at a wide viewing angle appear reddish, which cannot meet the user's requirement for a bluish dark state display.

[0088] The aforementioned wide viewing angle can be a side viewing angle. The aforementioned dark state display can be defined as the grayscale of the image displayed on the display panel being L0.

[0089] Based on this, as shown in FIG6, an embodiment of the present disclosure provides a display panel 3, which is applied in the above-mentioned display device 1.

[0090] As shown in Figure 6, the display panel 3 includes: a first substrate 40 and a second substrate 50 disposed opposite to each other, and a liquid crystal layer 34.

[0091] For example, the first substrate 40 can be one of the array substrate 31 and the color filter substrate 33, and the second substrate 50 can be the other of the array substrate 31 and the color filter substrate 33.

[0092] For ease of description, the following explanation will take the first substrate 40 as an array substrate and the second substrate 50 as a color filter substrate as an example.

[0093] The liquid crystal layer 34 is located between the first substrate 40 and the second substrate 50.

[0094] The structures of the array substrate 31, the color filter substrate 33, and the liquid crystal layer 34 can be referred to the descriptions in some of the embodiments described above in this disclosure, and will not be repeated here.

[0095] In some examples, as shown in Figure 6, the above-mentioned display panel 3 further includes a first alignment layer 60 and a second alignment layer 70.

[0096] A first alignment layer 60 is located between the liquid crystal layer 34 and the first substrate 40, and a second alignment layer 70 is located between the liquid crystal layer 34 and the second substrate 50. The first alignment layer 60 aligns the liquid crystal molecules in the liquid crystal layer 34 that are close to it, causing the liquid crystal molecules to have a certain pretilt angle. The second alignment layer 70 aligns the liquid crystal molecules in the liquid crystal layer 34 that are close to it, causing the liquid crystal molecules to have a certain pretilt angle. The pretilt angle prevents the liquid crystal molecules from deflecting in different directions under the influence of an applied electric field.

[0097] For example, as shown in FIG7, the first alignment layer 60 includes a first type alignment region 61 corresponding to the first sub-pixel 3201 and a second type alignment region 62 corresponding to the second sub-pixel 3202. Both the first type alignment region 61 and the second type alignment region 62 include a first sub-region 601 corresponding to the first dark texture region 3221.

[0098] The liquid crystal molecules in the first sub-region 601 are arranged in a disordered manner. When the display panel 3 is in a dark state, the backlight provided by the backlight module 2 will not be emitted after passing through the liquid crystal molecules in the domain region 321, but will be emitted through the color filter substrate 33 after passing through the liquid crystal molecules in the first sub-region 601, causing the display panel 3 to exhibit light leakage under a large viewing angle in a dark state.

[0099] In some examples, the width of the first sub-region 601 in the first type of alignment region 61 is set to be smaller than the width of the first sub-region 601 in the second type of alignment region 62.

[0100] For example, the shape of the first sub-region 601 can be a rectangle or approximately a rectangle, and the width of the first sub-region 601 refers to the length of the shorter side of the rectangle.

[0101] For example, the length of the first sub-region 601 in the first type of alignment region 61 is equal to or approximately equal to the length of the first sub-region 601 in the second type of alignment region 62. The width of the first sub-region 601 in the first type of alignment region 61 is relatively small, resulting in a relatively small area of ​​the first sub-region 601. Consequently, the number of liquid crystal molecules corresponding to this first sub-region 601 is relatively small. Therefore, when the display panel 3 is in a dark state, the backlight corresponding to the first sub-pixel 3201 emits less light at a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules, resulting in relatively less light leakage of the color corresponding to the first sub-pixel 3201 in the light emitted from the display panel 3. The width of the first sub-region 601 in the second alignment region 62 is relatively large, resulting in a relatively large area for the first sub-region 601. This first sub-region 601 corresponds to a relatively large number of liquid crystal molecules. Consequently, when the display panel 3 is in a dark state, the backlight corresponding to the second sub-pixel 3202, after passing through the first sub-region 601 and its corresponding liquid crystal molecules, emits more light at a wide viewing angle. This results in a relatively large amount of light leakage from the display panel 3 corresponding to the color of the second sub-pixel 3202. Therefore, by utilizing the relationship between the width of the first sub-region 601 in the first alignment region 61 and the width of the first sub-region 601 in the second alignment region 62, the proportion of light leakage of different colors in the display panel 3 under dark conditions at a wide viewing angle can be adjusted. This, in turn, allows adjustment of the color bias of the display panel 3 in the dark state.

[0102] The display panel 3 provided in the above embodiments of this disclosure, by correspondingly setting the first alignment region 61 with the first sub-pixel 3201, correspondingly setting the second alignment region 62 with the second sub-pixel 3202, and setting the first sub-region 601 to correspond with the first dark texture region 3221, and setting the width of the first sub-region 601 in the first alignment region 61 in the first alignment layer 60 to be smaller than the width of the first sub-region 601 in the second alignment region 62, in the case of dark display of the display panel 3, the backlight provided by the backlight module emits less light with a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the first alignment region 61, and more light with a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the second alignment region 62. This allows adjustment of the light leakage ratio of different colors of light in dark display of the display panel 3 at a wide viewing angle, and further allows adjustment of the color of the display panel 3 in dark to be biased towards a certain color, which is convenient to meet the user's requirements.

[0103] In some examples, the first sub-pixel 3201 can emit light of either red or green. The second sub-pixel 3202 can emit light of either blue.

[0104] Therefore, when the display panel 3 is in a dark state, the backlight provided by the backlight module emits less red and / or green light with a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the first alignment region 61. In other words, the amount of red and / or green light leakage is less. The backlight provided by the backlight module emits more blue light with a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the second alignment region 62. In other words, the amount of blue light leakage is more. As a result, the color gradation of the display panel in the dark state exhibits a bluish tint at a wide viewing angle, which meets the user's requirements.

[0105] In some examples, as shown in Figure 7, the first type of alignment region 61 further includes a fifth sub-region 602 and a sixth sub-region 603 located on opposite sides of the first sub-region 601 along the first direction X. The second type of alignment region 62 also includes a fifth sub-region 602 and a sixth sub-region 603 located on opposite sides of the first sub-region 601 along the first direction X.

[0106] The fifth sub-region 602 and the sixth sub-region 603 have opposite orientation directions. For example, the orientation direction of the fifth sub-region 602 is E1, and the orientation direction of the sixth sub-region 603 is -E1.

[0107] In the liquid crystal layer, the liquid crystal molecules corresponding to the fifth sub-region 602 and the sixth sub-region 603 in the first type of alignment region 61, respectively, generate a certain pretilt angle under the alignment direction of the corresponding alignment force. The direction of the pretilt angle of the liquid crystal molecule corresponding to the fifth sub-region 602 is different from the direction of the pretilt angle of the liquid crystal molecule corresponding to the sixth sub-region 603.

[0108] In some examples, as shown in Figures 8 and 25, the liquid crystal layer 34 includes a first portion 341 corresponding to the first sub-pixel 3201 and a second portion 342 corresponding to the second sub-pixel 3202.

[0109] When the display panel 3 is in a bright state, the light transmittance of the first part 341 of the liquid crystal layer 34 is greater than the light transmittance of the second part 342 of the liquid crystal layer 34.

[0110] For example, when the display panel 3 is in a bright state, the liquid crystal molecules in the first portion 341 of the liquid crystal layer 34 corresponding to the domain region 321 are deflected under the action of the pixel electrode and the common electrode, allowing the backlight provided by the backlight module to pass through, resulting in a higher light transmittance. The liquid crystal molecules in the first portion 341 corresponding to the dark pattern region (e.g., the first dark pattern region) are also deflected, allowing the backlight to pass through, but the deflection angle is limited, resulting in a relatively lower light transmittance. Compared to the second portion 342 of the liquid crystal layer 34, the first portion 341 of the liquid crystal layer 34 has relatively fewer liquid crystal molecules corresponding to the dark pattern region, thus making the light transmittance of the first portion 341 of the liquid crystal layer 34 greater than that of the second portion 342.

[0111] In some examples, as shown in Figure 9, the second alignment layer 70 includes a third alignment region 71 corresponding to the first sub-pixel 3201 and a fourth alignment region 72 corresponding to the second sub-pixel 3202. Both the third alignment region 71 and the fourth alignment region 72 include a second sub-region 701 corresponding to the second dark texture region 3222.

[0112] For example, the shape of the second sub-region 701 is rectangular or approximately rectangular.

[0113] For example, the length of the second sub-region 701 of the third alignment region 71 is equal to the length of the second sub-region 701 of the fourth alignment region 72. The width of the second sub-region 701 in the third alignment region 71 is smaller than the width of the second sub-region 701 in the fourth alignment region 72. The relatively small width of the second sub-region 701 in the third alignment region 71 results in a relatively small area of ​​the second sub-region 701. Consequently, the number of liquid crystal molecules corresponding to this second sub-region 701 is relatively small. Therefore, when the display panel is in a dark state, the backlight corresponding to the first sub-pixel 3201 emits less light at a wide viewing angle after passing through the second sub-region 701 and its corresponding liquid crystal molecules, resulting in less red light leakage in the light emitted from the display panel. The width of the second sub-region 701 of the fourth alignment region 72 is relatively large, resulting in a relatively large area of ​​the second sub-region 701. The second sub-region 701 corresponds to a relatively large number of liquid crystal molecules. Therefore, when the display panel is in a dark state, the backlight corresponding to the second sub-pixel 3202 emits more light at a wide viewing angle after passing through the second sub-region 701 and its corresponding liquid crystal molecules. This results in a relatively large amount of blue light leakage in the light emitted by the display panel, thus causing the display panel to exhibit a bluish tint at a wide viewing angle when in a dark state, meeting the user's needs.

[0114] In another implementation, as shown in Figure 10, during the process of aligning the first substrate and the second substrate, the second substrate is prone to shift relative to the first substrate, and the second alignment layer shifts relative to the first alignment layer. This results in a large difference between the area of ​​the first domain D1 (or the second domain D2) and the area of ​​the third domain D3 (or the fourth domain D4) in each sub-pixel (refer to Figure 10). Consequently, the dark lines displayed on the screen are asymmetrical from the left and right viewing angles, causing inconsistencies in the left and right viewing angles.

[0115] Based on this, in some examples of this disclosure, as shown in Figure 11, both the third type alignment region 71 and the fourth type alignment region 72 include: a third sub-region 702 and a fourth sub-region 703 located on opposite sides of the second sub-region 701 along the second direction. The alignment direction of the third sub-region 702 is opposite to the alignment direction of the fourth sub-region 703.

[0116] For example, the alignment direction of the third sub-region 702 is F1, and the alignment direction of the fourth sub-region 703 is -F1 (the dashed arrows in Figure 11 indicate the alignment directions).

[0117] In some examples, in two adjacent sub-pixels 32 along the second direction Y, the two fourth sub-regions 703 are set opposite each other, and the two third sub-regions 702 are set opposite each other.

[0118] The relative arrangement here refers to the fact that, among the two fourth sub-regions 703 and the two third sub-regions 702, the two fourth sub-regions 703 are located between the two third sub-regions 702. The opposite arrangement here refers to the fact that, among the two fourth sub-regions 703 and the two third sub-regions 702, the two third sub-regions 702 are located on opposite sides of the two fourth sub-regions 703 along the second direction.

[0119] In other examples, as shown in Figure 11, in two adjacent sub-pixels 32 along the second direction Y, the two third sub-regions 702 are positioned opposite each other, and the two fourth sub-regions 703 are positioned opposite each other. Combining the alignment directions of the fifth sub-region 602 and the sixth sub-region 603 in the first alignment layer 60 (refer to Figure 7), the alignment directions and relative positions of the first domains D1, second domains D2, third domains D3, and fourth domains D4 of two adjacent sub-pixels 32 can be seen in Figure 12. The alignment directions of each first domain D1 are the same, the alignment directions of each second domain D2 are the same, the alignment directions of each third domain D3 are the same, and the alignment directions of each fourth domain D4 are the same.

[0120] Taking two adjacent sub-pixels 32 along the second direction Y as an example, where the two third sub-regions 702 are arranged opposite each other and the two fourth sub-regions 703 are arranged opposite each other, the distribution and relative positions of each domain region of the two adjacent sub-pixels are explained in conjunction with the corresponding arrangement of the first sub-region 601 in the first alignment layer 60.

[0121] Specifically, referring to FIGS. 11 and 12, the first domains D1 of two adjacent sub-pixels 32 are arranged oppositely, the second domains D2 of two adjacent sub-pixels 32 are arranged oppositely, the third domains D3 of two adjacent sub-pixels 32 are arranged away from each other, and the fourth domains D4 of two adjacent sub-pixels 32 are arranged away from each other. Thus, when the second substrate is offset relative to the first substrate and the second alignment layer 70 is offset relative to the first alignment layer 60, for example, the second alignment layer 70 is offset downward (along the Y direction) relative to the first alignment layer 60, the second sub-region 701 in the second alignment layer 70 is offset downward, and the second sub-region 701 is correspondingly arranged with the second dark stripe region 3222, so that the second dark stripe region 3222 is offset downward, causing the relative areas of the four domain regions 321 of one sub-pixel to change, making the areas of the third domain D3 and the fourth domain D4 of the sub-pixel close to the top of the display panel in two adjacent sub-pixels larger, and the areas of the first domain D1 and the second domain D2 relatively smaller. The second dark stripe region 3222 of the other sub-pixel is also offset downward accordingly. The first domain D1 and the second domain D2 of the other sub-pixel are close to the top of the display panel, and the areas of the first domain D1 and the second domain D2 of the other sub-pixel become larger, while the areas of the third domain D3 and the fourth domain D4 become smaller, making the sum of the areas of the two first domains D1 (or the second domain D2, the third domain D3, the fourth domain D4) of the two sub-pixels relatively unchanged or change less compared with the case without offset. Thus, the area of each domain region in one sub-pixel of two adjacent sub-pixels can be used to compensate the area of the corresponding domain region in the other sub-pixel, improving the problems of asymmetric dark stripes presented in the left and right viewing angles of the picture displayed on the display panel and inconsistent left and right viewing angle color shifts caused by the inconsistent areas of the first domain D1, the second domain D2 and the third domain D3, the fourth domain D4.

[0122] Exemplarily, as shown in FIG. 12, the shapes of the dark stripe regions 322 of two adjacent sub-pixels 32 are different. For example, the shape of the dark stripe region 322 of one sub-pixel 32 is an "8" shape, and the shape of the dark stripe region 322 of the other sub-pixel 32 is a "卐" shape.

[0123] Exemplarily, in a column of sub-pixels, the shapes of the dark stripe regions 322 of the sub-pixels in odd rows are the same, the shapes of the dark stripe regions of the sub-pixels in even rows are the same, and the shapes of the dark stripe regions 322 of the sub-pixels in odd rows are different from the shapes of the dark stripe regions of the sub-pixels in even rows.

[0124] For example, in a column of sub-pixels, the shape of the dark stripe region 322 of the sub-pixels in odd rows is an "8" shape, and the shape of the dark stripe region of the sub-pixels in even rows is a "卐" shape.

[0125] 又如,一列子像素中,位于偶数行的子像素中暗纹区322的形状为“8”字形,位于奇数行的子像素的暗纹区的形状为“卐”字形。 Another example is that in a column of sub-pixels, the shape of the dark stripe region 322 of the sub-pixels in even rows is an "8" shape, and the shape of the dark stripe region of the sub-pixels in odd rows is a "卐" shape.

[0126] In other examples, as shown in Figures 13 and 14, two adjacent sub-pixels 32 along the second direction Y constitute a sub-pixel unit 3203. For example, these two adjacent sub-pixels 32 can be a bright pixel and a dark pixel, respectively. Optionally, the bright pixel and the dark pixel are electrically connected to the same data line and display different brightness levels under the same data voltage, one bright and one dark. The effect of eight domains is achieved only through four domains and voltage differences, which improves the color shift problem of the display panel and enhances the display quality.

[0127] In one of two adjacent sub-pixel units 3203, the two third sub-regions 702 are arranged opposite each other, and the two fourth sub-regions 703 are arranged opposite each other; or, the two fourth sub-regions 703 are arranged opposite each other, and the two third sub-regions 702 are arranged opposite each other.

[0128] Taking one of two adjacent sub-pixel units 3203 as an example, where two third sub-regions 702 are arranged opposite each other and two fourth sub-regions 703 are arranged opposite each other, the distribution and relative positions of each domain region of the sub-pixel in the sub-pixel unit 3203 are explained in conjunction with the corresponding arrangement of the first sub-region 601 and the first dark texture region 3221 in the first alignment layer 60.

[0129] Specifically, as shown in Figures 13 and 14, in this sub-pixel unit 3203, the third domains D3 of the two sub-pixels are set opposite each other, the first domains D1 of the two sub-pixels are set opposite each other, the fourth domains D4 of the two sub-pixels are set opposite each other, and the second domains D2 of the two sub-pixels are set opposite each other. Therefore, when the second substrate is offset relative to the first substrate and the second alignment layer is offset relative to the first alignment layer, for example, when the second alignment layer 70 is offset downward relative to the first alignment layer 60 (along the Y direction), the second sub-region 701 in the second alignment layer 70 is offset downward, and the second sub-region 701 is correspondingly disposed with the second dark smudge region 3222, thereby causing the formed second dark smudge region 3222 to be offset downward. The relative areas of the four domain regions 321 of one sub-pixel (which can be a second type sub-pixel 3209) in the sub-pixel unit 3203 (for example, the sub-pixel unit 3203 can be a first sub-pixel unit 3204) change, so that the areas of the third domain D3 and the fourth domain D4 of the sub-pixel of the sub-pixel unit 3203 become larger, and the areas of the first domain D1 and the second domain D2 become relatively smaller. The other sub-pixel unit 3203 (for example, the sub-pixel unit 3203 can be a second sub-pixel) becomes smaller. In unit 3205, the first domain D1 and second domain D2 of the corresponding sub-pixel (which can be a second type of sub-pixel 3209) are close to the top of the display panel. The area of ​​the first domain D1 and second domain D2 of the sub-pixel increases, while the area of ​​the third domain D3 and fourth domain D4 decreases. This makes the sum of the areas of the two first domains D1 (or second domain D2, third domain D3, and fourth domain D4) of the two sub-pixels in the two sub-pixel units 3203 relatively unchanged or change less compared to the case where no offset occurs. Thus, the area of ​​each domain region in one sub-pixel of the two sub-pixels in the adjacent sub-pixel units 3203 can be used to compensate for the area of ​​the corresponding domain region in the other sub-pixel. This improves the problem of asymmetrical dark lines and inconsistent left and right viewpoints caused by the inconsistency of the areas of the first domain D1, second domain D2 and third domain D3, and fourth domain D4.

[0130] In some examples, as shown in Figure 15, each sub-pixel 32 further includes a third dark smudge region 3223. The third dark smudge region 3223 is located at a portion of the edge of the sub-pixel 32. The third dark smudge region 3223 includes a first sub-dark smudge region 3224 and a second sub-dark smudge region 3225 located on opposite sides of the first dark smudge region 3221 and connected to the first dark smudge region 3221, and a third sub-dark smudge region 3226 and a fourth sub-dark smudge region 3227 located on opposite sides of the second dark smudge region 3222 and connected to the second dark smudge region 3222.

[0131] For example, the third dark texture region 3223 can be caused by the liquid crystal molecules corresponding to the edge portion of the sub-pixel undergoing a deflection angle that differs from the deflection angle of the liquid crystal molecules in the adjacent domain region under the action of the edge electric field of the pixel electrode.

[0132] The first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 constitute the dark texture area 322 of the sub-pixel.

[0133] As shown in Figure 14, the sub-pixel unit 3203 includes a first type of sub-pixel 3208 and a second type of sub-pixel 3209. The area of ​​the first type of sub-pixel 3208 projected onto the plane of the display panel is smaller than the area of ​​the second type of sub-pixel 3209 projected onto the plane of the display panel. For example, the first type of sub-pixel 3208 is a bright pixel, and the second type of sub-pixel 3209 is a dark pixel.

[0134] The two adjacent sub-pixel units 3203 mentioned above include a first sub-pixel unit 3204 and a second sub-pixel unit 3205.

[0135] It is understandable that the shape of the dark texture area in a sub-pixel is related to the orientation of each domain region in the sub-pixel. If the orientation directions of the domain regions at corresponding positions in two sub-pixels are different, then the shapes of the dark texture areas presented in the two sub-pixels will be different.

[0136] In some examples, as shown in Figure 14, the shape of the dark texture area 322 formed by the first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 of the second type of sub-pixels 3209 in the first sub-pixel unit 3204 is different from the shape of the dark texture area 322 formed by the first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 of the second type of sub-pixels 3209 in the second sub-pixel unit 3205.

[0137] For example, the shape of the dark texture area 322 of the first type of sub-pixel 3208 in the first sub-pixel unit 3204 may be different from the shape of the dark texture area 322 of the second type of sub-pixel 3209 in the first sub-pixel unit 3204.

[0138] For example, the shape of the dark texture area 322 of the first type of sub-pixel 3208 in the second sub-pixel unit 3205 can be the same as the shape of the dark texture area of ​​the second type of sub-pixel 3209 in the second sub-pixel unit 3205.

[0139] Therefore, the shape of the dark texture area 322 of the second type of sub-pixels 3209 in each sub-pixel unit 3203 can be differentiated. When displayed on the display panel, this avoids the regular arrangement of multiple dark texture areas 322 with the same shape, preventing the entire display screen from displaying multiple dark textures of the same shape, which is beneficial to improving the user's viewing experience. In addition, the different shapes of the dark texture areas of the second type of sub-pixels in each sub-pixel unit 3203 result in different arrangement of the corresponding domain areas of the second type of sub-pixels 3209 in different sub-pixel units 3203 (here, the arrangement of the domain areas refers to the arrangement of the first domain D1, the second domain D2, the third domain D3, and the fourth domain D4). This allows the areas of the corresponding domain areas of the second type of sub-pixels 3209 in different sub-pixel units 3203 to compensate for each other, thereby improving the asymmetry of dark textures in the display panel from the left and right viewing angles, as well as the phenomenon of inconsistent viewing angles from the left and right.

[0140] In some other examples, as shown in Figure 14, the shape of the dark texture area 322 formed by the first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 of the first type of sub-pixel 3208 in at least one sub-pixel unit 3203 is different from the shape of the dark texture area 322 formed by the first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 of the second type of sub-pixel 3209 in the same sub-pixel unit 3203.

[0141] For example, the at least one sub-pixel unit 3203 can be a first sub-pixel unit 3204 or a second sub-pixel unit 3205.

[0142] For example, in a plurality of sub-pixel units 3203, the shape of the dark texture area 322 in the first type of sub-pixel 3208 of one sub-pixel unit 3203 is different from the shape of the dark texture area 322 in the second type of sub-pixel 3209, while the shape of the dark texture area 322 in the first type of sub-pixel 3208 of the remaining sub-pixel units 3203 is the same as the shape of the dark texture area 322 in the second type of sub-pixel 3209.

[0143] For example, in multiple sub-pixel units 3203, the shape of the dark texture area 322 in the first type of sub-pixel 3208 of the sub-pixel units 3203 located in odd-numbered rows is different from the shape of the dark texture area 322 in the second type of sub-pixel 3209, while the shape of the dark texture area 322 in the first type of sub-pixel 3208 of the sub-pixel units 3203 located in even-numbered rows is the same as the shape of the dark texture area 322 in the second type of sub-pixel 3209.

[0144] For example, in multiple sub-pixel units 3203, the shape of the dark texture area 322 in the first type of sub-pixel 3208 of the even-numbered sub-pixel units 3203 is different from the shape of the dark texture area 322 in the second type of sub-pixel 3209, while the shape of the dark texture area 322 in the first type of sub-pixel 3208 of the odd-numbered sub-pixel units 3203 is the same as the shape of the dark texture area 322 in the second type of sub-pixel 3209.

[0145] Therefore, the shapes of the dark texture area 322 of the first type of sub-pixel 3208 and the dark texture area 322 of the second type of sub-pixel 3209 in at least one sub-pixel unit 3203 (e.g., the first sub-pixel unit 3204) can be differentiated, which is beneficial to improving the user's viewing experience.

[0146] In some other examples, the shape of the dark area 322 formed by the first dark area 3221, the second dark area 3222, and the third dark area 3223 of the second type of sub-pixels 3209 in the first sub-pixel unit 3204 is different from the shape of the dark area 322 formed by the first dark area 3221, the second dark area 3222, and the third dark area 3223 of the second type of sub-pixels 3209 in the second sub-pixel unit 3205. Furthermore, the shape of the dark area 322 formed by the first dark area 3221, the second dark area 3222, and the third dark area 3223 of the first type of sub-pixels 3208 in at least one sub-pixel unit 3203 is different from the shape of the dark area 322 formed by the first dark area 3221, the second dark area 3222, and the third dark area 3223 of the second type of sub-pixels 3209 in that sub-pixel unit 3203.

[0147] Therefore, the shape of the dark texture area 322 of the second type of sub-pixel 3209 in each sub-pixel unit 3203 can be differentiated, and the shape of the dark texture area 322 of the first type of sub-pixel 3208 and the dark texture area 322 of the second type of sub-pixel 3209 in at least one sub-pixel unit 3204 can be differentiated, which is beneficial to improving the user's viewing experience.

[0148] In some examples, as shown in Figure 14, the shape of the dark texture area 322 formed by the first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 of the second type of sub-pixel 3209 in the first sub-pixel unit 3204 includes the shape of the figure "8". The shape of the dark texture area 322 formed by the first dark texture area 3221, the second dark texture area 3222, and the third dark texture area 3223 of the second type of sub-pixel 3209 in the second sub-pixel unit 3205 includes the shape of the swastika. For example, the swastika can be a right-handed swastika or a left-handed swastika.

[0149] It can be understood that the different shapes of the dark stripe regions 322 of the second type of sub-pixels 3209 in the first sub-pixel unit 3204 and the dark stripe regions 322 of the second type of sub-pixels 3209 in the second sub-pixel unit 3205 are due to the arrangement patterns of the respective domain regions in the second type of sub-pixels 3209 in the first sub-pixel unit 3204 and the arrangement patterns of the respective domain regions in the second type of sub-pixels 3209 in the second sub-pixel unit 3205. Therefore, when the second substrate is offset relative to the first substrate and the second alignment layer is offset relative to the first alignment layer, the areas of the corresponding domain regions in the second type of sub-pixels 3209 in the second sub-pixel unit 3205 can be compensated by the respective domain regions in the second type of sub-pixels 3209 in the first sub-pixel unit 3204, thereby improving the asymmetry of the dark stripes presented in the left and right viewing angles and the inconsistency of the color shift in the left and right viewing angles of the image displayed on the display panel.

[0150] In some examples, as shown in FIG. 14, the shape of the dark stripe region 322 formed by the first dark stripe region 3221, the second dark stripe region 3222, and the third dark stripe region 3223 of the first type of sub-pixels 3208 in the first sub-pixel unit 3204 includes a "卐" shape.

[0151] The shape of the dark stripe region 322 formed by the first dark stripe region 3221, the second dark stripe region 3222, and the third dark stripe region 3223 of the first type of sub-pixels 3208 in the second sub-pixel unit 3205 includes a "卐" shape.

[0152] Thus, the shapes of the dark stripe regions 322 of the first type of sub-pixels 3208 in the first sub-pixel unit 3204 and the shapes of the first type of sub-pixels 3208 in the second sub-pixel unit 3205 are both "卐" shapes, which is beneficial to reducing the manufacturing difficulty of the first alignment layer and the second alignment layer, and thus beneficial to reducing the design difficulty of the sub-pixels.

[0153] In some examples, as shown in FIG. 6, the first substrate 40 includes an array substrate 31. The array substrate 31 includes a substrate 301, and a gate layer 305, a first dielectric layer 3061, a source-drain conductive layer 307, and a second dielectric layer 3062 laminated on the substrate 301. The first dielectric layer 3061 is closer to the substrate 301 than the second dielectric layer 3062.

[0154] For example, the first dielectric layer 3061 is located between the gate layer 305 and the semiconductor layer. The second dielectric layer 3062 can be at least a part of the passivation layer and is located on the side of the source-drain conductive layer 307 in the array substrate 31 away from the substrate 301.

[0155] Exemplarily, the pixel electrode layer 303 in the array substrate 31 is located on the side of the second dielectric layer 3062 away from the substrate 301, and a common electrode 304 is provided in the second substrate 50.

[0156] In one implementation, the dielectric layer in the array substrate (such as the first dielectric layer and the second dielectric layer mentioned above) can easily interfere with and depolarize the light emitted by the backlight module, causing the light after passing through the dielectric layer to be reddish, which in turn causes the image displayed on the display panel to be reddish. This reddish phenomenon is particularly severe in dark conditions and at large viewing angles, affecting the user's viewing experience.

[0157] Based on this, in the embodiments of this disclosure, the thickness range of the first dielectric layer 3061 is set as follows: The thickness range of the second dielectric layer 3062 is:

[0158] For example, the thickness range of the first dielectric layer 3061 can be... or, For example, the thickness of the first dielectric layer 3061 can be or

[0159] For example, the thickness range of the second dielectric layer 3062 can be: or, For example, the thickness of the second dielectric layer 3062 can be or

[0160] By setting the thickness of the first dielectric layer 3061 and the second dielectric layer 3062 within the aforementioned range, the interference and depolarization effect of the first dielectric layer 3061 and the second dielectric layer 3062 on light can be adjusted, resulting in more blue light emitted from the first dielectric layer 3061 and the second dielectric layer 3062 after depolarization, and less red light emitted from the first dielectric layer 3061 and the second dielectric layer 3062 after depolarization, thereby improving the phenomenon of reddish tint at a wide viewing angle when the display panel is in a dark state.

[0161] In some examples, the material of the first dielectric layer 3061 is the same as the material of the second dielectric layer 3062.

[0162] For example, the material of the first dielectric layer 3061 can be silicon nitride.

[0163] In some examples, as shown in FIG6, the array substrate 31 further includes a third dielectric layer 3063 located between the first dielectric layer 3061 and the second dielectric layer 3062. The refractive index of the third dielectric layer 3063 is less than the refractive index of the first dielectric layer 3061.

[0164] For example, the refractive index of the third dielectric layer 3063 is less than that of the second dielectric layer 3062.

[0165] For example, the third dielectric layer 3063 can be located between the first dielectric layer 3061 and the source / drain conductive layer 307, or it can be located between the second dielectric layer 3062 and the source / drain conductive layer 307.

[0166] With the above configuration, the backlight provided by the backlight module passes through the first dielectric layer 3061 with a larger refractive index, the third dielectric layer 3063 with a smaller refractive index, and the second dielectric layer 3062 with a larger refractive index in sequence. As a result, more blue light is emitted from the backlight module at a wide viewing angle, and less red light is emitted from the backlight module at a wide viewing angle. This can improve the phenomenon of reddish tint at a wide viewing angle when the display panel is in a dark state.

[0167] The inventors conducted experiments on the interference and polarization of backlight caused by different dielectric layer thicknesses in the display panel, and detected the corresponding dark-state iridescence phenomenon.

[0168] Specifically, in the display panel Q1, the first dielectric layer includes a first sub-layer and a second sub-layer stacked on the gate layer. The material of the first sub-layer is silicon nitride, and the thickness of the first sub-layer is [missing information]. The second sublayer is made of silicon oxide, and its thickness is [missing information]. The second dielectric layer includes a third sublayer and a fourth sublayer stacked on the source and drain conductive layers. The material of the third sublayer is silicon oxide, and the thickness of the third sublayer is [missing information]. The fourth sublayer is made of silicon nitride, and its thickness is [missing information]. The aforementioned second and third sub-layers can also be considered as the third media layer in the display panel.

[0169] In the display panel Q2, the first dielectric layer includes a first sub-layer and a second sub-layer stacked on the gate layer. The material of the first sub-layer is silicon nitride, and the thickness of the first sub-layer is [missing information]. The second sublayer is made of silicon oxide, and its thickness is [missing information]. The second dielectric layer includes a third sublayer and a fourth sublayer stacked on the source and drain conductive layers. The material of the third sublayer is silicon oxide, and the thickness of the third sublayer is [missing information]. The fourth sublayer is made of silicon nitride, and its thickness is [missing information]. The aforementioned second and third sub-layers can also be considered as the third media layer in the display panel.

[0170] In the display panel Q3, the material of the first dielectric layer is set to silicon oxide, and the thickness of the first dielectric layer is [missing information]. The second dielectric layer comprises a third sublayer and a fourth sublayer stacked on the source / drain conductive layer. The third sublayer is made of silicon oxide, and its thickness is [missing information]. The fourth sublayer is made of silicon nitride, and its thickness is [missing information].

[0171] In the display panel Q4, the first dielectric layer includes a first sub-layer and a second sub-layer stacked on the gate layer. The material of the first sub-layer is silicon nitride, and the thickness of the first sub-layer is [missing information]. The second sublayer is made of silicon oxide, and its thickness is [missing information]. No second dielectric layer is provided.

[0172] Light leakage was detected in display panels Q1, Q2, Q3, and Q4 under wide viewing angles. The detection results are shown in Figures 17 and 18. Figure 17(a) and Figure 18(a) are schematic diagrams of the image displayed by display panel Q1 in a dark state under wide viewing angles. The dark state displayed by display panel Q1 is significantly reddish under wide viewing angles. Figure 17(b) and Figure 18(b) are schematic diagrams of the image displayed by display panel Q2 in a dark state under wide viewing angles. The dark state displayed by display panel Q2 is bluish under wide viewing angles. Figure 17(c) is a schematic diagram of the image displayed by display panel Q3 in a dark state under wide viewing angles. The dark state displayed by display panel Q3 is bluish under wide viewing angles. Figure 17(d) is a schematic diagram of the image displayed by display panel Q4 in a dark state under wide viewing angles. The dark state displayed by display panel Q4 is significantly bluish under wide viewing angles.

[0173] Compared to display panel Q1, display panel Q2 displays a bluish tint in dark states at wide viewing angles. This indicates that in display panel Q2, the thickness of the first sub-layer within the first dielectric layer is smaller, and the thickness is within... Within the range, the fourth sublayer in the second dielectric layer has a relatively large thickness, and the thickness is within... Within the range, the interference and depolarization effect of the first and second dielectric layers on the light can be adjusted, so that more blue light is emitted from the first and second dielectric layers after depolarization, and less red light is emitted from the first and second dielectric layers after depolarization, so that the dark state displayed by the display panel Q2 is bluish at a wide viewing angle.

[0174] Compared to display panel Q1, display panel Q3 displays a bluish tint in dark states at wide viewing angles. This is because display panel Q3, with only a silicon oxide first dielectric layer, can adjust the interference and depolarization effects of the first and second dielectric layers on light. This results in more blue light and less red light emitted from the first and second dielectric layers at wide viewing angles, thus causing the bluish tint in dark states displayed by display panel Q3 at wide viewing angles.

[0175] Compared to display panel Q1, display panel Q4 displays a bluish tint in dark conditions at wide viewing angles. This is because display panel Q4 contains only a first dielectric layer, and this first dielectric layer is relatively thick. This allows the first dielectric layer to adjust its interference and depolarization effect on light, resulting in more blue light emitted from the first dielectric layer at wide viewing angles and less red light emitted from the first dielectric layer at wide viewing angles. This explains the bluish tint in dark conditions displayed by display panel Q4 at wide viewing angles.

[0176] In some examples, as shown in Figure 6, the display panel 3 further includes a first polarizer 3091. The first polarizer 3091 is located on the side of the first substrate 40 away from the first alignment layer 60. The in-plane compensation value of the first polarizer 3091 ranges from 45 nm to 60 nm.

[0177] For example, the in-plane compensation value of the first polarizer 3091 can be in the range of 45nm to 52nm or 52nm to 60nm. For instance, the in-plane compensation value of the first polarizer can be 45nm, 48nm, 52nm, 55nm or 60nm.

[0178] When the display panel is in a dark state, the backlight provided by the backlight module passes through the first polarizer. Since the in-plane compensation value of the first polarizer 3091 is set within the above range, the light emitted from the first polarizer at a wide viewing angle is bluish, thereby improving the phenomenon of reddish light in the dark state of the display panel.

[0179] In some examples, as shown in Figure 6, the display panel 3 further includes a second polarizer 3092. The second polarizer 3092 is located on the side of the second substrate 50 away from the first alignment layer 60. The in-plane compensation value of the second polarizer 3092 ranges from 45 nm to 60 nm.

[0180] For example, the in-plane compensation value of the second polarizer 3092 can be in the range of 45nm to 52nm or 52nm to 60nm. For example, the in-plane compensation value of the first polarizer can be 45nm, 48nm, 52nm, 55nm or 60nm.

[0181] When the display panel is in a dark state, the backlight provided by the backlight module passes through the color filter substrate and the second polarizer. Since the in-plane compensation value of the second polarizer 3092 is set within the above range, the light emitted from the second polarizer 3092 at a wide viewing angle is bluish, thereby improving the phenomenon of reddish color in the dark state of the display panel.

[0182] As shown in Figure 16, the first ray LT1 passes perpendicularly through the first substrate. This ray has a small or positive viewing angle and is perpendicular to the polarization axis of the first polarizer (or the second polarizer). The first polarizer does not provide compensation. The second ray LT2 passes through the first substrate at a large angle. The angle between this ray and the polarization axis of the first polarizer is greater than 90°. Therefore, the first polarizer can compensate for the large viewing angle of the second ray LT2, making the light emitted from the first polarizer more bluish. The third ray LT3 passes through the first substrate at a certain angle. The angle between this ray and the polarization axis of the first polarizer is not equal to 90°. Therefore, the second polarizer can compensate for the third ray LT3, making the light emitted from the second polarizer more bluish. Therefore, the color of the large viewing angle light can be adjusted using the first polarizer and / or the second polarizer, making the light leakage of the display panel in the dark state more bluish.

[0183] The inventors also conducted experiments on light leakage of the polarizers and display panels. Specifically, the in-plane compensation value of the first polarizer (or second polarizer) in display panel Q5 was set to 50, and the thickness compensation value was set to 130. The in-plane compensation value of the first polarizer in display panel Q6 was set to 55, and the thickness compensation value was set to 135. The in-plane compensation value of the first polarizer in display panel Q7 was set to 59, and the thickness compensation value was set to 125. Then, the light leakage of each display panel was tested. Test results: Referring to Figures 19(a) to (c), Figure 19(a) is a schematic diagram of the image displayed by display panel Q5 in a dark and wide viewing angle. The light leakage of display panel Q5 is slightly bluish. Figure 19(b) is a schematic diagram of the image displayed by display panel Q6 in a dark and wide viewing angle. The light leakage of display panel Q6 in a dark and wide viewing angle is slightly bluish. Figure 19(c) is a schematic diagram of the image displayed by display panel Q7 in a dark and wide viewing angle. The light leakage of display panel Q7 in a dark and wide viewing angle is significantly bluish.

[0184] Compared to display panel Q5, display panel Q6 exhibits a slightly bluish tint in light leakage at wide viewing angles in dark conditions, while display panel Q7 shows a significantly bluish tint in light leakage at wide viewing angles in dark conditions. This demonstrates that setting a larger in-plane compensation value for the first polarizer, within the range of 45nm to 60nm, can adjust the color of light leakage at wide viewing angles, resulting in a bluish tint in dark conditions displayed by the display panel.

[0185] For example, Figure 20 is a Bonga sphere diagram of light in a display panel in one implementation, wherein the in-plane compensation value of the first polarizer in the display panel is small, for example, less than 45 nm. Figure 21 is a Bonga sphere diagram of light in a display panel using a first polarizer with an in-plane compensation value of 45 nm to 60 nm.

[0186] In Figure 20, along the direction of light emission, the light rays emitted from the backlight module at a wide viewing angle are located at point M1. After passing through the first polarizer, the light is decomposed into red, green, and blue light. Specifically, the red light is located at point MR1, the green light at point MG1, and the blue light at point MB1. After passing through the liquid crystal layer, the red light is located at point MR2, the green light at point MG2, and the blue light at point MB2. After passing through the second polarizer, the red light is located at point MR3, the green light at point MG3, and the blue light at point MB3. It can be seen that point MR3, where the red light is located, is far from the horizontal line SL1, resulting in more light leakage and causing the light leakage from the display panel to appear reddish at wide viewing angles.

[0187] As shown in Figure 21, the in-plane compensation value of the first polarizer in this disclosure is set within the range of 45nm to 60nm. Along the light emission direction, the light rays emitted from the backlight module at a wide viewing angle are located at point N1. After passing through the first polarizer, the light is decomposed into red, green, and blue light. Specifically, red light is located at point NR1, green light at point NG1, and blue light at point NB1. After passing through the liquid crystal layer, red light is located at point NR2, green light at point NG2, and blue light at point NB2. After passing through the second polarizer, red light is located at point NR3, green light at point NG3, and blue light at point NB3. It can be seen that point NR3, where the red light is located, is closer to the horizontal line, resulting in reduced light leakage. Point NG3, where the green light is located, is on the horizontal line, with almost no light leakage. Point NB3, where the blue light is located, is farther from the horizontal line SL2, resulting in more light leakage. Therefore, the light leakage of the display panel at a wide viewing angle appears bluish.

[0188] The embodiments of this disclosure also provide a method for preparing a display panel 3, used to prepare the display panel 3 described in any of the above embodiments.

[0189] Figure 22 is a flowchart of a method for fabricating a display panel 3 according to some embodiments of this disclosure. Figures 23 to 25 are structural diagrams corresponding to each step in the method for fabricating the display panel 3 according to some embodiments. It should be understood that the steps shown in Figure 22 are not exclusive, and other steps may be performed before, after, or between any of the steps shown. Furthermore, some of the steps may be performed simultaneously or in a different order than that shown in Figure 22.

[0190] As shown in Figure 22, the preparation method includes: A100 to A300.

[0191] As shown in Figure 23, A100, a first alignment layer 60 is formed on the first substrate 40.

[0192] For example, the first alignment layer 60 is a monolithic structure and can be formed by a coating process.

[0193] For example, the material of the first alignment layer 60 includes polyimide (PI).

[0194] For example, the first substrate 40 can be an array substrate.

[0195] As shown in Figure 24, in alignment layer A200, optical alignment is performed on the first alignment layer 60, resulting in multiple first-type alignment regions 61 and multiple second-type alignment regions 62. Both the first-type alignment regions 61 and the second-type alignment regions 62 include a first sub-region 601. The width of the first sub-region 601 in the first-type alignment region 61 is smaller than the width of the first sub-region 601 in the second-type alignment region 62.

[0196] For example, the first sub-area 601 is set to correspond to the first dark pattern area.

[0197] The structure of the first sub-region 601 can be referred to the description of some embodiments of this disclosure above, and will not be repeated here.

[0198] By using photo-alignment to align the first alignment layer 60, the slits and protrusions used in the display panel for aligning liquid crystal molecules can be eliminated, thereby improving the aperture ratio, contrast and response speed of the display panel, significantly reducing production steps and lowering the manufacturing cost of the display panel.

[0199] As shown in Figure 25, liquid crystal layer 34 is formed in A300. Liquid crystal layer 34 includes multiple first portions 341 and multiple second portions 342. The first portions 341 are at least partially opposite to a first type of alignment region 61, and the second portions 342 are at least partially opposite to a second type of alignment region 62. The first portions 341 and their corresponding first type of alignment regions 61 constitute a part of a first sub-pixel 3201, and the second portions 342 and their corresponding second type of alignment regions 62 constitute a part of a second sub-pixel 3202. The color of light emitted by the first sub-pixel 3201 is different from the color of light emitted by the second sub-pixel 3202.

[0200] For example, the first sub-pixel 3201 can emit red or green light, and the second sub-pixel 3202 can emit blue light.

[0201] The above-described preparation method provided in the embodiments of this disclosure performs photo-alignment on the first alignment layer 60 and prepares the width of the first sub-region 601 in the first alignment region 61 to be smaller than the width of the first sub-region 601 in the second alignment region 62. In this way, when the display panel 3 is in a dark state, the backlight provided by the backlight module emits less light with a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the first alignment region 61, while the backlight provided by the backlight module emits more light with a wide viewing angle after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the second alignment region 62. This allows adjustment of the light leakage ratio of different colors in the display panel 3 under dark state and wide viewing angle conditions, and further allows adjustment of the iridescent color of the display panel 3 in the dark state to lean towards a certain color, such as bluish.

[0202] For example, both the first type of alignment region 61 and the second type of alignment region 62 include a fifth sub-region 602 and a sixth sub-region 603 located on opposite sides of the first sub-region 601 along the first direction X. For instance, the first type of alignment region 61 includes at least the fifth sub-region 602, the first sub-region 601, and the sixth sub-region 603 that are sequentially adjacent along the first direction X. The second type of alignment region 62 includes at least the fifth sub-region 602, the first sub-region 601, and the sixth sub-region 603 that are sequentially adjacent along the first direction X.

[0203] In some examples, in the above A200, the first alignment layer 60 is optically aligned, including: A210 to A220.

[0204] As shown in Figure 24, A210, using a first photomask PM1 and first polarized light, the first type of alignment region 61 is first aligned, completing the alignment of the fifth sub-region 602 of the first type of alignment region 61. The first photomask PM1 includes a first light-blocking region PM11 and a first light-transmitting region PM12, with the area of ​​the first light-transmitting region PM12 being larger than the area of ​​the first light-blocking region PM11. The first sub-region 601 and the fifth sub-region 602 are directly opposite the first light-transmitting region PM12, and the sixth sub-region 603 is directly opposite the first light-blocking region PM11.

[0205] For example, the first polarized light is linearly polarized and is ultraviolet light. The first sub-region 601 is irradiated by the first polarized light.

[0206] As shown in Figure 24, A220 utilizes a second photomask PM2 and second polarized light to perform a second alignment of the first type of alignment region 61, completing the alignment of the sixth sub-region 603 of the first type of alignment region 61. The second photomask PM2 includes a second light-blocking region PM21 and a second light-transmitting region PM22, with the area of ​​the second light-transmitting region PM22 being larger than the area of ​​the second light-blocking region PM21. The first sub-region 601 and the sixth sub-region 603 are directly opposite to the second light-transmitting region PM22, and the fifth sub-region 602 is directly opposite to the second light-blocking region PM21. The alignment direction of the fifth sub-region 602 is opposite to the alignment direction of the sixth sub-region 603.

[0207] For example, the second polarized light is ultraviolet light. The polarization direction of the first polarized light is opposite to that of the second polarized light. The first sub-region 601 is irradiated by the second polarized light.

[0208] By using the above settings, the first sub-region 601 in the first alignment region 61 is subjected to two polarized light irradiation processes (or two exposure processes), which can make the width of the first dark pattern region 3221 smaller, and the area of ​​the dark pattern region in the sub-pixel relatively smaller. As a result, when the display panel is in a dark state, the light leakage of the dark pattern region is less or no, thereby reducing the amount of light leakage emitted by the first sub-pixel. For example, if the first sub-pixel emits red light, it can improve the reddish light leakage phenomenon of the display panel.

[0209] For example, as shown in Figure 24, the distance L1 between the boundary line of the first light-blocking area PM11 and the first light-transmitting area PM12 in the first light cover PM1 and the boundary line of the second light-blocking area PM21 and the second light-transmitting area PM22 in the second light cover PM2 in the first direction is 0μm to 10μm.

[0210] The distance L1 between the boundary line of the first light-blocking area PM11 and the first light-transmitting area PM12 in the first photomask PM1 and the boundary line of the second light-blocking area PM21 and the second light-transmitting area PM22 in the second photomask PM2 in the first direction can range from 0μm to 3μm, 3μm to 6μm, or 6μm to 10μm. For example, the distance L1 between the boundary line of the first light-blocking area PM11 and the first light-transmitting area PM12 in the first photomask PM1 and the boundary line of the second light-blocking area PM21 and the second light-transmitting area PM22 in the second photomask PM2 in the first direction can be 0μm, 2.5μm, 3μm, 3.5μm, 6μm, 8μm, or 10μm.

[0211] It is understandable that the width of the first sub-region 601 is related to the aforementioned spacing L1. The smaller the spacing L1, the smaller the width of the first sub-region 601 and the smaller the width of the first dark texture area 3221.

[0212] For example, the width range of the first sub-region 601 and the range of the spacing L1 can be the same or different. The width and spacing L1 of the first dark fringe region 3221 can be equal or unequal. For example, due to the influence of factors such as light scattering and diffraction, the width of the first sub-region 601 and the spacing L1 have a certain difference.

[0213] By adopting the above settings, the width of the first dark pattern area 3221 can be smaller, and the area of ​​the dark pattern area in the sub-pixel can be relatively smaller. As a result, when the display panel is in a dark state, the light leakage of the dark pattern area is less or no, thereby reducing the amount of light leakage emitted by the first sub-pixel. For example, if the first sub-pixel emits red light, the reddish light leakage phenomenon of the display panel can be improved.

[0214] In some examples, the first alignment layer 60 is optically aligned in A200 above, and also includes A230 to A240.

[0215] As shown in Figure 24, in A230, the second type alignment region 62 is first aligned using the third photomask PM3 and the first polarized light, completing the alignment of the fifth sub-region 602 of the second type alignment region 62. The third photomask PM3 includes a third light-blocking region PM31 and a third light-transmitting region PM32, with the area of ​​the third light-transmitting region PM33 being smaller than the area of ​​the third light-blocking region PM31. The fifth sub-region 602 is directly opposite the third light-transmitting region PM32, and the sixth sub-region 603 and the first sub-region 601 are directly opposite the third light-blocking region PM31.

[0216] The first sub-region 601 mentioned above was not illuminated by the first polarized light.

[0217] As shown in Figure 24, using the fourth photomask PM4 and the second polarized light, the second alignment region 62 is aligned a second time, completing the alignment of the sixth sub-region 603 of the second alignment region 62. The fourth photomask PM4 includes a fourth light-blocking region PM41 and a fourth light-transmitting region PM42, with the area of ​​the fourth light-transmitting region PM42 being smaller than the area of ​​the fourth light-blocking region PM41. The sixth sub-region 603 is directly opposite to the fourth light-transmitting region PM42, while the first sub-region 601 and the fifth sub-region 602 are directly opposite to the fourth light-blocking region PM41. The alignment direction of the fifth sub-region 602 is opposite to the alignment direction of the sixth sub-region 603.

[0218] The first sub-region 601 mentioned above was not illuminated by the second polarized light.

[0219] By using the above settings, the first sub-region 601 in the second type of alignment region 62 is light-shielded (or subjected to two non-exposure processes), which can make the width of the corresponding first dark pattern region 3221 larger, and the area of ​​the dark pattern region in the sub-pixel relatively large. As a result, when the display panel is in a dark state, there is more light leakage in the dark pattern region, which can increase the amount of light leakage emitted by the second sub-pixel. For example, if the second sub-pixel emits blue light, the light leakage of the display panel will appear bluish, which meets the user's requirements.

[0220] In some examples, as shown in Figure 24, the distance L2 between the boundary line of the third shading area PM31 and the third light-transmitting area PM32 in the third photomask PM3 and the boundary line of the fourth shading area PM41 and the fourth light-transmitting area PM42 in the fourth photomask PM4 in the first direction X is 0 μm to 10 μm.

[0221] For example, the distance L2 between the boundary line between the third light-blocking area PM31 and the third light-transmitting area PM32 in the third light cover PM3 and the boundary line between the fourth light-blocking area PM41 and the fourth light-transmitting area PM42 in the fourth light cover PM4 in the first direction X can be 0μm to 3μm, 3μm to 6μm, or 6μm to 10μm. For instance, the distance L2 between the boundary line between the third light-blocking area PM31 and the third light-transmitting area PM32 in the third light cover PM3 and the boundary line between the fourth light-blocking area PM41 and the fourth light-transmitting area PM42 in the fourth light cover PM4 in the first direction X can be 0μm, 3μm, 5μm, 6μm, 8μm, or 10μm.

[0222] By adopting the above settings, the width of the first dark pattern area 3221 can be larger, and the area of ​​the dark pattern area in the sub-pixel can be relatively large. As a result, when the display panel is in a dark state, there is more light leakage in the dark pattern area, which can increase the amount of light leakage emitted by the second sub-pixel. For example, if the second sub-pixel emits red and blue light, the light leakage of the display panel will appear bluish, which meets the user's requirements.

[0223] In some examples, as shown in Figure 25, forming a liquid crystal layer in upper A300 includes: aligning a first substrate 40 and a second substrate 50, and injecting liquid crystal molecules between a first alignment layer 60 and a second alignment layer 70 to form a liquid crystal layer 34.

[0224] In some examples, the display panel fabrication method further includes A280 to A290 before the liquid crystal layer is formed in A300.

[0225] A280, a second alignment layer 70 is formed on the second substrate 50.

[0226] For example, the second substrate 50 can be a color filter substrate.

[0227] A290, optical alignment is performed on the second alignment layer 70, so that the second alignment layer 70 forms a plurality of third type alignment regions 71 and a plurality of fourth type alignment regions 72; both the third type alignment regions 71 and the fourth type alignment regions 72 include a second sub-region 701, and the width of the second sub-region 701 in the third type alignment region 71 is smaller than the width of the second sub-region 701 in the fourth type alignment region 72.

[0228] For example, the second sub-region 701 mentioned above corresponds to the second dark texture region of the sub-pixel. The third type of alignment region 71 corresponds to the first sub-image, and the fourth type of alignment region 72 corresponds to the second sub-pixel.

[0229] The structure of the second alignment layer 70 and the structure of the second sub-region 701 can be referred to Figure 9 and the descriptions in some of the embodiments of this disclosure above, and will not be repeated here.

[0230] The above-described preparation method provided in the embodiments of this disclosure performs photo-alignment on the second alignment layer 70 and prepares the width of the second sub-region 701 in the third alignment region 71 to be smaller than the width of the second sub-region 701 in the fourth alignment region 72. In this way, when the display panel 3 is in a dark state, the backlight provided by the backlight module emits less light with a wide viewing angle after passing through the second sub-region 701 and its corresponding liquid crystal molecules in the third alignment region 71, while the backlight provided by the backlight module emits more light with a wide viewing angle after passing through the second sub-region 701 and its corresponding liquid crystal molecules in the fourth alignment region 72. This allows adjustment of the light leakage ratio of different colors in the display panel 3 under dark state and wide viewing angle conditions, and further allows adjustment of the color bias of the display panel 3 in the dark state to a certain color.

[0231] Some embodiments of this disclosure also provide a substrate 5, which can be applied to the display panel 3 described above. As shown in FIG26, the substrate 5 includes a substrate 301 and an alignment layer 51 disposed on the substrate 301.

[0232] The alignment layer 51 includes a first alignment region 61 corresponding to the first sub-pixel 3201 in the display panel 3 and a second alignment region 62 corresponding to the second sub-pixel 3202 in the display panel 3.

[0233] Both the first alignment region 61 and the second alignment region 62 include a first sub-region 601 corresponding to the first dark pattern region 3221 in the corresponding display panel 3. The width of the first sub-region 601 in the first alignment region 61 is smaller than the width of the first sub-region 601 in the second alignment region 62.

[0234] The substrate 5 provided in the embodiments of this disclosure includes an alignment layer 51 comprising a first alignment region 61 corresponding to a first sub-pixel 3201 in the display panel 3 and a second alignment region 62 corresponding to a second sub-pixel 3202 in the display panel 3. The first sub-region 601 corresponds to a first dark pattern region 3221. The width of the first sub-region 601 in the first alignment region 61 of the first alignment layer 60 is smaller than the width of the first sub-region 601 in the second alignment region 62. Thus, in the case of dark display on the display panel 3... In the case of backlight provided by the backlight module, after passing through the first sub-region 601 and its corresponding liquid crystal molecules in the first alignment region 61 of the substrate 5, the emitted light at a wide viewing angle is less. After passing through the first sub-region 601 and its corresponding liquid crystal molecules in the second alignment region 62, the emitted light at a wide viewing angle is greater. This allows adjustment of the light leakage ratio of different colors in the display panel 3 under dark display and wide viewing angle conditions. Furthermore, it allows adjustment of the color of the display panel 3 in the dark to lean towards a certain color, such as blue.

[0235] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display panel comprising a plurality of sub-pixels, each sub-pixel comprising a plurality of domain regions and a first dark texture region, the plurality of sub-pixels comprising a first sub-pixel and a second sub-pixel, wherein the color of light emitted by the first sub-pixel is different from the color of light emitted by the second sub-pixel; The display panel includes: A first substrate and a second substrate arranged opposite to each other; A liquid crystal layer is located between the first substrate and the second substrate; A first alignment layer and a second alignment layer, wherein the first alignment layer is located between the liquid crystal layer and the first substrate, and the second alignment layer is located between the liquid crystal layer and the second substrate; The first alignment layer includes a first type of alignment region corresponding to the first sub-pixel and a second type of alignment region corresponding to the second sub-pixel. Both the first type of alignment region and the second type of alignment region include a first sub-region corresponding to the first dark texture region. The width of the first sub-region in the first type of alignment region is smaller than the width of the first sub-region in the second type of alignment region.

2. The display panel according to claim 1, wherein, The liquid crystal layer includes a first portion corresponding to the first sub-pixel and a second portion corresponding to the second sub-pixel; When the display panel is in a bright state, the light transmittance of the first portion of the liquid crystal layer is greater than the light transmittance of the second portion of the liquid crystal layer.

3. The display panel according to claim 1 or 2, wherein, Each sub-pixel also includes a second dark texture area, where the first dark texture area and the second dark texture area intersect, and the region corresponding to the sub-pixel is divided into the plurality of domain regions; The second alignment layer includes a third type of alignment region corresponding to the first sub-pixel and a fourth type of alignment region corresponding to the second sub-pixel; both the third type of alignment region and the fourth type of alignment region include a second sub-region corresponding to the second dark texture region; The width of the second sub-region in the third type of alignment region is smaller than the width of the second sub-region in the fourth type of alignment region.

4. The display panel according to claim 3, wherein, Both the third type of alignment region and the fourth type of alignment region include: a third sub-region and a fourth sub-region located on opposite sides of the second sub-region along the second direction; the alignment direction of the third sub-region is opposite to the alignment direction of the fourth sub-region; In two adjacent sub-pixels along the second direction, the two third sub-regions are arranged opposite each other, and the two fourth sub-regions are arranged opposite each other.

5. The display panel according to claim 3, wherein, Both the third type of alignment region and the fourth type of alignment region include: a third sub-region and a fourth sub-region located on opposite sides of the second sub-region along the second direction; the alignment direction of the third sub-region is opposite to the alignment direction of the fourth sub-region; Two adjacent sub-pixels along the second direction constitute a sub-pixel unit; in one of the two adjacent sub-pixel units, two third sub-regions are arranged opposite each other, and two fourth sub-regions are arranged opposite each other.

6. The display panel according to claim 5, wherein, Each sub-pixel further includes: a third dark texture area; the third dark texture area is located at a portion of the edge of the sub-pixel; the third dark texture area includes: a first sub-dark texture area and a second sub-dark texture area located on opposite sides of the first dark texture area and connected to the first dark texture area, and a third sub-dark texture area and a fourth sub-dark texture area located on opposite sides of the second dark texture area and connected to the second dark texture area; The sub-pixel unit includes a first type of sub-pixel and a second type of sub-pixel; the area of ​​the first type of sub-pixel projected onto the plane where the display panel is located is smaller than the area of ​​the second type of sub-pixel projected onto the plane where the display panel is located. The two adjacent sub-pixel units include a first sub-pixel unit and a second sub-pixel unit; The shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the second type of sub-pixel in the first sub-pixel unit is different from the shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the second type of sub-pixel in the second sub-pixel unit; and / or, the shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the first type of sub-pixel in at least one sub-pixel unit is different from the shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the second type of sub-pixel in the at least one sub-pixel unit.

7. The display panel according to claim 6, wherein, The shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the second type of sub-pixel in the first sub-pixel unit includes an "8" shape, and the shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the second type of sub-pixel in the second sub-pixel unit includes a "卐" shape.

8. The display panel according to claim 6 or 7, wherein, The shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the first type of sub-pixel in the first sub-pixel unit includes a "卐" shape; The shape of the dark pattern region formed by the first dark pattern region, the second dark pattern region, and the third dark pattern region of the first type of sub-pixel in the second sub-pixel unit includes a "卐" shape.

9. The display panel according to any one of claims 1 to 8, wherein, The color of the light that the first sub-pixel can emit includes: red or green; the color of the light that the second sub-pixel can emit includes: blue.

10. The display panel according to any one of claims 1 to 9, wherein, The first substrate includes an array substrate; The array substrate includes a substrate, and a gate layer, a first dielectric layer, a source-drain conductive layer, and a second dielectric layer stacked on the substrate, and the first dielectric layer is closer to the substrate than the second dielectric layer; The thickness range of the first dielectric layer is: The thickness range of the second dielectric layer is:

11. The display panel according to claim 10, wherein, The array substrate further includes: a pixel electrode layer located on the side of the second dielectric layer away from the substrate; the second substrate includes a common electrode.

12. The display panel according to claim 10 or 11, wherein, The material of the first dielectric layer is the same as the material of the second dielectric layer.

13. The display panel according to any one of claims 10 to 12, wherein, The array substrate further includes: a third dielectric layer located between the first dielectric layer and the second dielectric layer; the refractive index of the third dielectric layer is less than the refractive index of the first dielectric layer.

14. The display panel according to any one of claims 1 to 13, wherein, It further includes: a first polarizer; the first polarizer is located on the side of the first substrate away from the first alignment layer; The in-plane compensation value of the first polarizer ranges from 45 nm to 60 nm.

15. The display panel according to claim 14, wherein, [[ID=,12]]It further includes: a second polarizer; The second polarizer is located on the side of the second substrate away from the first alignment layer; The in-plane compensation value of the second polarizer ranges from 45 nm to 60 nm.

16. A method for manufacturing a display panel, including: Forming a first alignment layer on the first substrate; Performing photo-alignment on the first alignment layer so that the first alignment layer forms a plurality of first-type alignment regions and a plurality of second-type alignment regions; both the first-type alignment regions and the second-type alignment regions include a first sub-region, and the width of the first sub-region in the first-type alignment regions is smaller than the width of the first sub-region in the second-type alignment regions; A liquid crystal layer is formed; the liquid crystal layer includes a plurality of first portions and a plurality of second portions; the first portions are at least partially opposite to a first type of alignment region, and the second portions are at least partially opposite to a second type of alignment region; the first portions and their corresponding first type of alignment regions constitute a part of a first sub-pixel, and the second portions and their corresponding second type of alignment regions constitute a part of a second sub-pixel; the color of the light emitted by the first sub-pixel is different from the color of the light emitted by the second sub-pixel.

17. The preparation method according to claim 16, wherein, Both the first type of alignment region and the second type of alignment region include: a fifth sub-region and a sixth sub-region located on opposite sides of the first sub-region along the first direction; The optical alignment of the first alignment layer includes: Using a first photomask and first polarized light, the first type of alignment region is first aligned, and the alignment of the fifth sub-region of the first type of alignment region is completed; the first photomask includes a first light-shielding region and a first light-transmitting region, and the area of ​​the first light-transmitting region is larger than the area of ​​the first light-shielding region; the first sub-region and the fifth sub-region are directly opposite to the first light-transmitting region, and the sixth sub-region is directly opposite to the first light-shielding region; Using a second photomask and second polarized light, the first type of alignment region is aligned a second time to complete the alignment of the sixth sub-region of the first type of alignment region; the second photomask includes a second light-shielding region and a second light-transmitting region, the area of ​​the second light-transmitting region is larger than the area of ​​the second light-shielding region; the first sub-region and the sixth sub-region are directly opposite to the second light-transmitting region, and the fifth sub-region is directly opposite to the second light-shielding region; the alignment direction of the fifth sub-region is opposite to the alignment direction of the sixth sub-region.

18. The preparation method according to claim 17, wherein, The distance between the boundary line between the first light-blocking area and the first light-transmitting area in the first photomask and the boundary line between the second light-blocking area and the second light-transmitting area in the second photomask in the first direction is 0μm to 10μm.

19. The preparation method according to any one of claims 16 to 18, wherein, Both the first type of alignment region and the second type of alignment region include: a fifth sub-region and a sixth sub-region located on opposite sides of the first sub-region along the first direction; The optical alignment of the first alignment layer includes: Using a third photomask and first polarized light, the second type of alignment region is first aligned, completing the alignment of the fifth sub-region of the second type of alignment region; the third photomask includes a third light-shielding region and a third light-transmitting region, the area of ​​the third light-transmitting region is smaller than the area of ​​the third light-shielding region; the fifth sub-region is directly opposite the first light-transmitting region, and the sixth sub-region and the first sub-region are directly opposite the third light-shielding region; Using a fourth photomask and second polarized light, the second type of alignment region is aligned a second time to complete the alignment of the sixth sub-region of the second type of alignment region; the fourth photomask includes a fourth light-shielding region and a fourth light-transmitting region, the area of ​​the fourth light-transmitting region is smaller than the area of ​​the fourth light-shielding region; the sixth sub-region is directly opposite to the fourth light-transmitting region, and the first sub-region and the fifth sub-region are directly opposite to the fourth light-shielding region; the alignment direction of the fifth sub-region is opposite to the alignment direction of the sixth sub-region.

20. A display device, comprising: The display panel as described in any one of claims 1 to 15, and the backlight module located on the non-light-emitting side of the display panel.

21. A substrate for use in a display panel, the substrate comprising: Substrate; An alignment layer disposed on the substrate includes a first type of alignment region corresponding to a first sub-pixel in the display panel and a second type of alignment region corresponding to a second sub-pixel in the display panel. Both the first type of alignment region and the second type of alignment region include a first sub-region corresponding to a first dark pattern area in the display panel. The width of the first sub-region in the first type of alignment region is smaller than the width of the first sub-region in the second type of alignment region.

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