Liquid crystal display panel and display device
By setting a symmetrical alignment structure in the junction area of the liquid crystal display panel, the problem of electric field disorder in the junction area of adjacent domains in the liquid crystal display panel is solved, the light transmittance is improved and the color shift phenomenon is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
- Filing Date
- 2023-04-26
- Publication Date
- 2026-06-26
Smart Images
Figure CN117471771B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and in particular to a liquid crystal display panel and display device. Background Technology
[0002] Currently, TFT-LCD displays exhibit significant color shift at different viewing angles, with the VA mode being particularly severe. The most common method to address this color shift is the multi-domain design of the pixel electrodes. This design allows the liquid crystal to deflect in different directions across different domain regions, thus ensuring more consistent screen brightness across different viewing angles and improving color shift.
[0003] However, existing multi-domain designs all have transition regions between adjacent domains. The electric field distribution in these transition regions is relatively disordered, and the liquid crystal in these regions cannot achieve the most effective deflection as the liquid crystal in the domain regions, thus reducing the light transmittance. Summary of the Invention
[0004] The purpose of this application is to provide a liquid crystal display panel and display device, which aims to improve the problem of disordered liquid crystal molecule arrangement in the junction area between adjacent domains and improve light transmittance.
[0005] On one hand, embodiments of this application provide a liquid crystal display panel, the liquid crystal display panel comprising at least:
[0006] Multiple sub-pixels, including multiple domain regions and the junction region between adjacent domain regions, wherein adjacent domain regions have a symmetry axis;
[0007] Liquid crystal molecules are distributed in the plurality of domain regions and junction regions;
[0008] An alignment film is disposed in the plurality of domain regions and junction regions, wherein the alignment film has an alignment structure in the junction regions;
[0009] The alignment structure is symmetrically arranged about the axis of symmetry.
[0010] In some embodiments, the alignment structure is triangular or rectangular in top view in the thickness direction of the alignment film.
[0011] In some embodiments, the alignment structure is in the shape of a triangular prism or a triangular pyramid.
[0012] In some embodiments, a plurality of the alignment structures are arranged at intervals along the direction of the junction region, or a single alignment structure extends continuously along the junction region.
[0013] In some embodiments, the liquid crystal display panel further includes:
[0014] The electrode layer includes sub-electrodes located in each of the domain regions;
[0015] In this configuration, multiple sub-electrodes within the same domain region are arranged in parallel to each other, multiple sub-electrodes within different domain regions are arranged along different directions, and sub-electrodes within adjacent domain regions are arranged symmetrically about the axis of symmetry.
[0016] In some embodiments, the junction area includes a first junction area and a second junction area that are symmetrical about the axis of symmetry, and the shape of the junction area is a triangle or a rectangle.
[0017] In some embodiments, the alignment structure has a first alignment direction in the first junction region and a second alignment direction in the second junction region; the arrangement direction of the sub-electrode adjacent to the first junction region is parallel to the first alignment direction; the arrangement direction of the sub-electrode adjacent to the second junction region is parallel to the second alignment direction.
[0018] In some embodiments, the electrode layer includes at least one of a pixel electrode and a common electrode.
[0019] In some embodiments, the liquid crystal display panel further includes:
[0020] A first substrate and a second substrate arranged opposite to each other;
[0021] The liquid crystal molecules are located between the first substrate and the second substrate; the alignment film is located on the side of the first substrate facing the second substrate, and / or on the side of the second substrate facing the first substrate; the electrode layer is located on the side of the first substrate facing the second substrate, and / or on the side of the second substrate facing the first substrate.
[0022] On the other hand, embodiments of this application provide a display device, which includes at least the liquid crystal display panel described in any of the above claims.
[0023] The beneficial effects of this application are: it provides a liquid crystal display panel and a display device, the liquid crystal display panel including at least a plurality of sub-pixels, liquid crystal molecules, and an alignment film. The plurality of sub-pixels include a plurality of domain regions and transition regions between adjacent domain regions, with a symmetry axis between adjacent domain regions. Liquid crystal molecules are distributed in the plurality of domain regions and the transition regions, and the alignment film is disposed in the plurality of domain regions and the transition regions. The alignment film has alignment junctions in the transition regions, and the alignment structure is symmetrically arranged about the symmetry axis. The alignment structure can fix the orientation of the liquid crystal molecules in the transition regions, thus the fixed orientation arrangement of the liquid crystal molecules in the transition regions between adjacent domain regions improves the light transmittance. Attached Figure Description
[0024] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.
[0025] Figure 1 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application;
[0026] Figure 2 This is a cross-sectional schematic diagram of a liquid crystal display panel provided in some embodiments of this application;
[0027] Figure 3 This is a schematic diagram of the arrangement structure of liquid crystal molecules provided in some embodiments of this application;
[0028] Figure 4 These are schematic diagrams of the alignment structures provided in some embodiments of this application;
[0029] Figure 5 These are schematic diagrams of the alignment structures provided in some embodiments of this application;
[0030] Figure 6 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application;
[0031] Figure 7 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application;
[0032] Figure 8 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application;
[0033] Figure 9 This is a top view structural diagram of a liquid crystal display panel provided in some embodiments of this application. Detailed Implementation
[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0035] In the description of this application, it should be understood that 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 technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0038] Please see Figure 1 , Figure 1 This is a top view structural schematic diagram of a liquid crystal display panel provided in some embodiments of this application. Please also refer to... Figure 2 , Figure 2 This is a cross-sectional schematic diagram of a liquid crystal display panel provided in some embodiments of this application. The liquid crystal display panel 100 can be applied to various electronic devices. The liquid crystal display panel 100 includes at least a plurality of sub-pixels 10, liquid crystal molecules 20, and an alignment film 30.
[0039] The plurality of sub-pixels 10 includes a plurality of domain regions 11 and a junction region 12 between adjacent domain regions 11. Adjacent domain regions 11 are connected by a symmetry axis A-A1. Liquid crystal molecules 20 are distributed in the plurality of domain regions 11 and the junction region 12. An alignment film 30 is disposed in the plurality of domain regions 11 and the junction region 12. The alignment film 30 has an alignment structure 31 in the junction region 12, which is symmetrically arranged about the symmetry axis A-A1. The alignment structure 31 can fix the orientation of the liquid crystal molecules 20 in the junction region 12. Therefore, the liquid crystal molecules 20 in the junction region 12 between adjacent domain regions 11 are fixedly oriented, improving light transmittance.
[0040] In some embodiments, the liquid crystal display panel 100 further includes an electrode layer 40, which includes sub-electrodes 41 located in each of the domain regions 11. Multiple sub-electrodes 41 within the same domain region 11 are arranged parallel to each other, while multiple sub-electrodes 41 in different domain regions 11 are arranged in different directions. Specifically, the sub-electrodes 41 in adjacent domain regions 11 are symmetrically arranged about the axis of symmetry A-A1. Because the sub-electrodes 41 in different domain regions 11 are arranged in different directions, the liquid crystal molecules 20 can be deflected in different directions in different domain regions 11, thereby making the screen brightness received at different viewing angles more consistent and improving color shift.
[0041] The electrode layer 40 may include at least one of a pixel electrode and a common electrode, that is, the electrode layer 40 may include a pixel electrode, or a common electrode, or a pixel electrode and a common electrode.
[0042] In some embodiments, the liquid crystal display panel 100 may further include a first substrate 50 and a second substrate 60 disposed opposite to each other. The liquid crystal molecules 20 are located between the first substrate 50 and the second substrate 60, and the alignment film 30 is located on the side of the first substrate 50 facing the second substrate 60, and / or on the side of the second substrate 60 facing the first substrate 50. The electrode layer 40 is located on the side of the first substrate 50 facing the second substrate 60, and / or on the side of the second substrate 60 facing the first substrate 50.
[0043] The first substrate 50 and the second substrate 60 can be one of an array substrate and a color filter substrate, respectively. That is, when the first substrate 50 is an array substrate, the second substrate 60 is a color filter substrate, and vice versa. Therefore, the alignment film 30 can be located on the side of the array substrate facing the color filter substrate, or on the side of the color filter substrate facing the array substrate, or simultaneously on the side of the first substrate 50 facing the second substrate 60 and the side of the second substrate 60 facing the first substrate 50. The electrode layer 40 can be located on the side of the array substrate facing the color filter substrate, or on the side of the color filter substrate facing the array substrate, or simultaneously on the side of the first substrate 50 facing the second substrate 60 and the side of the second substrate 60 facing the first substrate 50.
[0044] When the first substrate 50 side has both an electrode layer 40 and an alignment film 30, the electrode layer 40 is located between the first substrate 50 and the alignment film 30; when the second substrate 60 side has both an electrode layer 40 and an alignment film 30, the electrode layer 40 is located between the second substrate 60 and the alignment film 30.
[0045] In one embodiment, such as Figure 2As shown, the first substrate 50 is located above the second substrate 60. The liquid crystal display panel 100 includes, from top to bottom, the first substrate 50, the electrode layer 40, the alignment film 30, the liquid crystal molecules 20, the electrode layer 40, and the second substrate 60.
[0046] When the electrode layer 40 is located on the side of the first substrate 50 or the side of the second substrate 60, the electrode layer 40 can be a pixel electrode or a common electrode; when the first substrate 50 and the second substrate 60 have electrode layers 40 at the same time, one of the electrode layers 40 can be a pixel electrode and the other electrode layer 40 can be a common electrode.
[0047] like Figure 1 As shown in the illustration, this embodiment only displays two adjacent domain regions 11. It is understood that the liquid crystal display panel 100 may include more domain regions 11, such as 4, 8, and 16. In the absence of an electric field, the alignment film 30 itself has an initial alignment direction, fixing the orientation of the liquid crystal molecules 20. However, under an applied electric field, the liquid crystal molecules 20 in the domain region 11 can be fixed in orientation according to the orientation of the sub-electrode 41. However, the junction region 12 lacks a sub-electrode 41, resulting in a disordered electric field distribution in the junction region 12. Consequently, the liquid crystal molecules 20 in the junction region 12 are arranged disorderedly, leading to low light transmittance in the junction region 12. This embodiment adds an alignment structure 31 to the alignment film 30 in the junction region 12. The alignment structure 31 can fix the orientation of the liquid crystal molecules 20 in the junction region 12, thus improving the light transmittance of the junction region 12.
[0048] In some embodiments, the junction region 12 includes a first junction region 121 and a second junction region 122 that are symmetrical about the axis of symmetry A-A1. The junction region 12 can be a long rectangular strip symmetrical about the axis of symmetry A-A1. The alignment film 30 may have multiple alignment structures 31 in the junction region 12. The alignment structure 31 is triangular in shape in the top view of the alignment film 30 in the thickness direction, and the triangle is symmetrical about the axis of symmetry A-A1.
[0049] In some embodiments, the alignment structure 31 has a first alignment direction in the first junction region 121 and a second alignment direction in the second junction region 122. Therefore, the liquid crystal molecules 20 in the first junction region 121 can be arranged along the first alignment direction, and the liquid crystal molecules 20 in the second junction region 122 can be arranged along the second alignment direction.
[0050] The sub-electrode 41 adjacent to the first junction region 121 is arranged in a direction parallel to the first alignment direction; the sub-electrode 41 adjacent to the second junction region 122 is arranged in a direction parallel to the second alignment direction. This ensures that the arrangement direction of the sub-electrodes 41 on the same side of the axis of symmetry A-A1 is consistent with the alignment direction of the alignment structure 31. Multiple alignment structures 31 are arranged at intervals along the direction extending from the junction region 12.
[0051] Please see Figure 3 , Figure 3 This is a schematic diagram of the arrangement structure of liquid crystal molecules provided in some embodiments of this application. The alignment structure 31 makes the liquid crystal molecules 20 in the first junction region 121 and the liquid crystal molecules 20 in the adjacent domain region 11 have the same alignment direction. For example, the liquid crystal molecules 20 to the left of the symmetry axis A-A1 are arranged along the first alignment direction, and the liquid crystal molecules 20 to the right of the symmetry axis A-A1 are arranged along the second alignment direction.
[0052] Please see Figure 4 and Figure 5 , Figure 4 These are schematic diagrams of the alignment structures provided in some embodiments of this application. Figure 5 This is a schematic diagram of the alignment structure provided in some embodiments of this application.
[0053] like Figure 4 As shown, the alignment structure 31, in its top view along the thickness direction of the alignment film 30, is triangular. For example, the alignment structure 31 can be a triangular prism symmetrical about the axis of symmetry A-A1, or it can be a triangular pyramid symmetrical about the axis of symmetry A-A1. Figure 5 As shown, the top view of the alignment structure 31 is a long rectangular strip.
[0054] Please see Figure 6 , Figure 6 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application. For ease of understanding and brief description, the same structures in the embodiments of this application and the above embodiments continue to use the same reference numerals, and the same structures will not be described in detail.
[0055] The difference between this display panel 200 and the aforementioned display panel 100 is that the alignment film 30 may have an alignment structure 31a in the junction region 12. The top view shape of the alignment structure 31a may be rectangular, and the alignment structure 31a extends continuously along the junction region 12. The orthographic projection of the alignment structure 31a onto the junction region 12 coincides with the junction region 12.
[0056] Please see Figure 7 , Figure 7This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application. For ease of understanding and brief description, the same structures in the embodiments of this application and the above embodiments continue to use the same reference numerals, and the same structures will not be described in detail.
[0057] The difference between this display panel 300 and the aforementioned display panel is that the alignment film 30 may have multiple alignment structures 31b in the junction region 12. The top view shape of the alignment structure 31b may be rectangular, and the multiple alignment structures 31b are arranged at intervals along the direction extending from the junction region 12.
[0058] Please see Figure 8 , Figure 8 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application. For ease of understanding and brief description, the same structures in the embodiments of this application and the above embodiments continue to use the same reference numerals, and the same structures will not be described in detail.
[0059] The difference between this display panel 400 and the aforementioned display panel is that the shape of the junction area 12a can be an elongated triangle. The alignment film 30 has an alignment structure 31c in the junction area 12a. The top view of the alignment structure 31c can be triangular, and the alignment structure 31c extends continuously along the junction area 12a.
[0060] Please see Figure 9 , Figure 9 This is a top view schematic diagram of the liquid crystal display panel provided in some embodiments of this application. For ease of understanding and brief description, the same structures in the embodiments of this application and the above embodiments continue to use the same reference numerals, and the same structures will not be described in detail.
[0061] The difference between this display panel 500 and the aforementioned display panel is that the shape of the junction area 12a can be an elongated triangle. The alignment film 30 can have multiple alignment structures 31d in the junction area 12a. The top view shape of the alignment structure 31d can be triangular, and the multiple alignment structures 31d are arranged at intervals along the direction extending from the junction area 12a.
[0062] This application provides a liquid crystal display panel, which includes at least a plurality of sub-pixels 10, liquid crystal molecules 20, and an alignment film 30. The plurality of sub-pixels 10 includes a plurality of domain regions 11 and transition regions between adjacent domain regions 11. The liquid crystal molecules 20 are distributed in the plurality of domain regions 11 and the transition regions, and the alignment film 30 is disposed in the plurality of domain regions 11 and the transition regions. The alignment film 30 has an alignment structure in the transition regions, and the alignment structure is symmetrically arranged about the symmetry axis A-A1. The alignment structure fixes the orientation of the liquid crystal molecules 20 in the transition regions, thus ensuring a fixed orientation of the liquid crystal molecules 20 in the transition regions between adjacent domain regions 11, thereby improving light transmittance.
[0063] On the other hand, embodiments of this application also provide a display device, which includes at least the liquid crystal display panel provided in any of the above embodiments.
[0064] The above description of the embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application; those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A liquid crystal display panel, characterized in that, The liquid crystal display panel includes at least: Multiple sub-pixels, including multiple domain regions and the junction region between adjacent domain regions, wherein adjacent domain regions have a symmetry axis; Liquid crystal molecules are distributed in the plurality of domain regions and junction regions; An electrode layer, comprising sub-electrodes located in each of the domain regions; An alignment film is disposed in the plurality of domain regions and junction regions, the alignment film having an alignment structure in the junction region, the alignment structure having no overlapping portion with the sub-electrode; The alignment structure is symmetrically arranged about the axis of symmetry.
2. The liquid crystal display panel according to claim 1, characterized in that, The alignment structure is triangular or rectangular in top view along the thickness direction of the alignment film.
3. The liquid crystal display panel according to claim 2, characterized in that, The alignment structure is in the shape of a triangular prism or a triangular pyramid.
4. The liquid crystal display panel according to claim 2, characterized in that, The multiple alignment structures are arranged at intervals along the direction of the junction region, or one alignment structure extends continuously along the junction region.
5. The liquid crystal display panel according to claim 1, characterized in that, Multiple sub-electrodes within the same domain region are arranged in parallel to each other, multiple sub-electrodes within different domain regions are arranged in different directions, and sub-electrodes within adjacent domain regions are arranged symmetrically about the axis of symmetry.
6. The liquid crystal display panel according to claim 5, characterized in that, The junction area includes a first junction area and a second junction area that are symmetrical about the axis of symmetry, and the shape of the junction area is a triangle or a rectangle.
7. The liquid crystal display panel according to claim 6, characterized in that, The alignment structure has a first alignment direction in the first junction area and a second alignment direction in the second junction area; the setting direction of the sub-electrode adjacent to the first junction area is parallel to the first alignment direction; the setting direction of the sub-electrode adjacent to the second junction area is parallel to the second alignment direction.
8. The liquid crystal display panel according to claim 5, characterized in that, The electrode layer includes at least one of a pixel electrode and a common electrode.
9. The liquid crystal display panel according to claim 5, characterized in that, The liquid crystal display panel further includes: A first substrate and a second substrate arranged opposite to each other; The liquid crystal molecules are located between the first substrate and the second substrate; the alignment film is located on the side of the first substrate facing the second substrate, and / or on the side of the second substrate facing the first substrate; the electrode layer is located on the side of the first substrate facing the second substrate, and / or on the side of the second substrate facing the first substrate.
10. A display device, characterized in that, The display device includes at least the liquid crystal display panel as described in any one of claims 1-9.