CN112505970B - Liquid crystal display panel and manufacturing method thereof - Google Patents
Liquid crystal display panel and manufacturing method thereof Download PDFInfo
- Publication number
- CN112505970B CN112505970B CN202010947979.9A CN202010947979A CN112505970B CN 112505970 B CN112505970 B CN 112505970B CN 202010947979 A CN202010947979 A CN 202010947979A CN 112505970 B CN112505970 B CN 112505970B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- substrate
- layer
- display panel
- crystal molecules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, the liquid crystal layer is arranged between the first substrate and the second substrate, the liquid crystal layer comprises first liquid crystal molecules, the liquid crystal display panel further comprises a compensation layer, the optical path of the compensation layer is complementary with the optical path of the first liquid crystal molecules, the compensation layer is arranged on the liquid crystal layer, the compensation layer is composed of second liquid crystal molecules aligned according to a first direction, and the first liquid crystal molecules are aligned according to a second direction different from the first direction. In the liquid crystal display panel manufactured by the liquid crystal display panel manufacturing method, the optical path of the first liquid crystal molecules can be compensated due to the arrangement of the compensation layer in the liquid crystal layer, so that the color cast problem of the large visual angle of the liquid crystal display panel can be greatly improved; because the compensation layer is arranged in the liquid crystal display panel, the compensation layer cannot fall off, and the reliability of the liquid crystal display panel is greatly improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display panel and a manufacturing method of the liquid crystal display panel.
Background
The liquid crystal display panel (liquid crystal display, LCD) has advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation, and relatively low manufacturing cost, and is dominant in the field of flat panel display. The liquid crystal display panel includes a color filter substrate and a thin film transistor array substrate facing each other, and a liquid crystal layer interposed therebetween. However, the color shift problem of the liquid crystal display panel under a large viewing angle is common, and particularly, with the development trend of large size and high resolution of the liquid crystal display panel in recent years, the color shift problem of the liquid crystal display panel is more serious.
Disclosure of Invention
The invention aims to provide a liquid crystal display panel and a manufacturing method of the liquid crystal display panel, which can reduce color shift and have high reliability.
The invention provides a liquid crystal display panel, which comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, the liquid crystal layer is arranged between the first substrate and the second substrate, the liquid crystal layer comprises first liquid crystal molecules, the liquid crystal display panel further comprises a compensation layer, the optical path of the compensation layer is complementary with the optical path of the first liquid crystal molecules, the compensation layer is arranged on one side close to the liquid crystal layer, the compensation layer consists of second liquid crystal molecules aligned in a first direction, and the first liquid crystal molecules are aligned in a second direction different from the first direction.
Further, the supplementary layer is arranged on one side of the liquid crystal layer close to the second substrate; or the compensation layer is arranged on one side of the liquid crystal layer close to the first substrate; or the compensation layer is arranged on one side of the liquid crystal layer close to the second substrate and one side of the liquid crystal layer close to the first substrate.
Further, the first liquid crystal molecules are plane switching liquid crystals, and the second liquid crystal molecules are vertically aligned liquid crystals.
The invention also provides another liquid crystal display panel, which comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, the liquid crystal layer is arranged between the first substrate and the second substrate, the liquid crystal layer comprises first liquid crystal molecules, the liquid crystal display panel further comprises a compensation layer, the optical path of the compensation layer is complementary with the optical path of the first liquid crystal molecules, and the compensation layer is arranged on the first substrate or the second substrate.
Further, the first substrate comprises a first substrate, a thin film transistor, a common electrode and a pixel electrode, the thin film transistor is arranged on one side, close to the liquid crystal layer, of the first substrate, the common electrode and the pixel electrode are arranged at intervals, and when the compensation layer is arranged on the first substrate, the compensation layer covers the pixel electrode.
Further, the second substrate comprises a second substrate, an upper electrode, a color resistance layer and a shading layer, the upper electrode is arranged on one side, close to the liquid crystal layer, of the second substrate, the color resistance layer is arranged on one side, close to the liquid crystal layer, of the upper electrode, the shading layer is arranged between adjacent color resistances of the color resistance layer, and when the compensation layer is arranged on the second substrate, the compensation layer is arranged on one side, close to the liquid crystal layer, of the color resistance layer of the second substrate.
Further, the compensation layer includes a compensation film and an alignment film for aligning liquid crystal molecules of the compensation film.
Further, the optical path difference of the compensation layer is 300 nanometers.
The invention also provides a manufacturing method of the liquid crystal display panel, which comprises the following steps:
providing a first substrate and a second substrate, wherein an alignment film is arranged on only the first substrate in the first substrate and the second substrate, and the first substrate and the second substrate are oppositely arranged and assembled together;
injecting liquid crystal molecules between the first substrate and the second substrate to form a liquid crystal layer, wherein the liquid crystal layer comprises first liquid crystal molecules and second liquid crystal molecules, and the first liquid crystal molecules are aligned through the alignment film;
and aligning the second liquid crystal molecules to form a compensation layer, wherein the alignment directions of the first liquid crystal molecules and the second liquid crystal molecules are different, and the optical path of the compensation layer is complementary with the optical path of the first liquid crystal molecules.
Further, the alignment of the second liquid crystal molecules is specifically: irradiating ultraviolet light on the liquid crystal layer on one side of the second substrate; or, irradiating ultraviolet light to the liquid crystal layer on only one side of the first substrate; or, the liquid crystal layer is irradiated with ultraviolet light on both one side of the first substrate and one side of the second substrate.
In the liquid crystal display panel manufactured by the liquid crystal display panel manufacturing method, the optical path of the first liquid crystal molecules can be compensated due to the arrangement of the compensation layer in the liquid crystal layer, so that the color cast problem of the large visual angle of the liquid crystal display panel can be greatly improved; and because the compensation layer is arranged in the liquid crystal display panel, the compensation layer cannot fall off, and the reliability of the liquid crystal display panel is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a liquid crystal display panel according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the liquid crystal display panel of fig. 1 when the second liquid crystal molecules are not aligned.
Fig. 3 is a flowchart of a method for manufacturing a liquid crystal display panel according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a liquid crystal display panel according to a second embodiment of the present invention.
Fig. 5a to 5e are color shift effect simulation diagrams of liquid crystal display panels with different structures.
Fig. 6a to 6o are transmission simulation diagrams and contrast simulation diagrams of liquid crystal display panels with different structures.
Fig. 7 is a schematic structural diagram of a liquid crystal display panel according to a third embodiment of the present invention.
Fig. 8 and 9 are schematic views illustrating a manufacturing process of the liquid crystal display panel shown in fig. 7.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
First embodiment
Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid crystal display panel according to a first embodiment of the present invention. The liquid crystal display panel comprises a first substrate 10, a second substrate 30 and a liquid crystal layer 50, wherein the first substrate 10 and the second substrate 30 are oppositely arranged, and the liquid crystal layer 50 is arranged between the first substrate 10 and the second substrate 30. The liquid crystal layer 50 includes first liquid crystal molecules 502, and the first liquid crystal molecules 502 may be positive liquid crystal or negative liquid crystal, and the first liquid crystal molecules 502 may be IPS (In-Plane Switching) liquid crystal. The first substrate 10 may be a thin film transistor array substrate, and the second substrate 30 may be a color film substrate.
In this embodiment, the liquid crystal layer 50 is further provided with a compensation layer 504, and the optical path of the compensation layer 504 is complementary to the optical path of the first liquid crystal molecules 502. Specifically, since the refractive indices of the first liquid crystal molecules 502 are different in the up-down and left-right directions, the refractive index of the compensation layer 504 is also set to be different in the up-down and left-right directions, and is set to be opposite to the refractive index of the first liquid crystal molecules 502, for example, assuming that the refractive index of the first liquid crystal molecules 502 in the up-down direction is larger than the refractive index in the left-right direction, the refractive index of the compensation layer 504 is set to be smaller in the up-down direction than the refractive index in the left-right direction, so that the optical path length of the first liquid crystal molecules 502 is compensated. Specifically, the compensation layer 504 is composed of second liquid crystal molecules aligned in a first direction, and the first liquid crystal molecules 502 are aligned in a second direction different from the first direction. The compensation layer 504 is disposed on a side of the liquid crystal layer 50 adjacent to the second substrate 30. Specifically, the optical path difference of the compensation layer 504 may be 300 nanometers (nm). The compensation layer 504 is VA liquid crystal (Vertical Alignment liquid crystal, vertically aligned liquid crystal).
In this embodiment, when forming the liquid crystal display panel shown in fig. 1, as shown in fig. 2, the liquid crystal layer 50 is injected between the first substrate 10 and the second substrate 30, and the first liquid crystal molecules 502 are aligned, and the second liquid crystal molecules are in a lying state; the liquid crystal layer 50 is then irradiated with ultraviolet light at one side of the second substrate 30, and the second liquid crystal molecules are aligned and cured in VA form, thereby forming the compensation layer 504. In another embodiment, the liquid crystal layer 50 may be irradiated with ultraviolet light on one side of the first substrate 10, and the second liquid crystal molecules near one side of the first substrate 10 form the compensation layer 504 on one side near the first substrate 10; in still another embodiment, the liquid crystal layer 50 may be irradiated with ultraviolet light on both sides of the first substrate 10 and the second substrate 30, and the compensation layer 504 may be formed on both sides of the first substrate 10 and the second substrate 30. When the ultraviolet light is irradiated to the liquid crystal layer 50 only on one side of the first substrate 10 or only on one side of the second substrate 30, the secondary irradiation of the liquid crystal can be avoided, and when the ultraviolet light is irradiated to both the first substrate 10 and the second substrate 30, the compensation range can be made wider.
In this embodiment, the first substrate 10 includes a first substrate 102, a thin film transistor 104, a common electrode 106 and a pixel electrode 108, where the thin film transistor 104 is disposed on a side of the first substrate 102 near the liquid crystal layer 50, and the common electrode 106 and the pixel electrode 108 are spaced apart. The first substrate 10 is divided into a plurality of pixel units, and each pixel unit is provided with a thin film transistor 104. Specifically, the first substrate 10 further includes a first insulating layer 109, a second insulating layer 111, and a protective layer 113, where the first insulating layer 109 covers the thin film transistor 104, the common electrode 106 is disposed on the first insulating layer 109, the second insulating layer 111 covers the common electrode 106, the pixel electrode 108 is disposed on the second insulating layer 111, and the protective layer 113 covers the pixel electrode 108.
In this embodiment, the second substrate 30 includes a second substrate 302, an upper electrode 303, a color resist layer 304, a light shielding layer 306, and a planarization layer 308. The upper electrode 303 is disposed on a side of the second substrate 302 adjacent to the liquid crystal layer 50, and the color resist layer 304 is disposed on a side of the upper electrode 303 adjacent to the liquid crystal layer 50, where the color resist layer 304 includes a plurality of color resists, and the color resists may include red, green and blue color resists. The light shielding layer 306 may be a black matrix disposed between adjacent color resistors. The planarization layer 308 is disposed on a side of the color blocking layer 304 adjacent to the liquid crystal layer 50.
In the liquid crystal display panel of the embodiment, the compensation layer 504 is disposed on the liquid crystal layer 50, so that the optical path length of the first liquid crystal molecules 502 can be compensated, and the color cast problem of the large viewing angle of the liquid crystal display panel can be greatly improved; and because the compensation layer 504 is arranged inside the liquid crystal display panel, the compensation layer 504 cannot fall off, and the reliability of the liquid crystal display panel is greatly improved.
The invention also provides a manufacturing method of the liquid crystal display panel, which is used for manufacturing the liquid crystal display panel. Referring to fig. 3, the method for manufacturing the liquid crystal display panel includes the following steps:
s11, providing the first substrate 10 and the second substrate 30, wherein the first substrate 10 includes an alignment film, and the second substrate 30 does not include an alignment film, that is, the liquid crystal display panel provided in this example is fabricated by performing one-sided alignment of the first substrate 10 during the fabrication process, and then assembling the first substrate 10 and the second substrate 30 together. Specifically, the first substrate 10 may be a thin film transistor array substrate, and the second substrate 30 may be a color film substrate.
S13, please refer to fig. 2, the liquid crystal molecules are injected between the first substrate 10 and the second substrate 30 to form a liquid crystal layer 50, the liquid crystal layer 50 includes a first liquid crystal molecule 502 and a second liquid crystal molecule, and the first liquid crystal molecule 502 is aligned by the alignment film. The first liquid crystal molecules 502 may be IPS liquid crystal, and the second liquid crystal molecules may be VA liquid crystal. Specifically, the liquid crystal layer 50 is sealed after the injection of the liquid crystal layer 50, i.e., the liquid crystal display panel is in a box.
S15, please refer to FIG. 1, the second liquid crystal molecules are aligned to form a compensation layer 504. Specifically, alignment of the second liquid crystal molecules may be accomplished by ultraviolet light irradiation. The liquid crystal layer 50 may be irradiated with ultraviolet light on one side of the second substrate 30, or the liquid crystal layer 50 may be irradiated with ultraviolet light on one side of the first substrate 10, or the liquid crystal layer 50 may be irradiated with ultraviolet light on both one side of the first substrate 10 and one side of the second substrate 30. Specifically, the optical path difference of the compensation layer 504 may be 300 nanometers (nm).
In the liquid crystal display panel manufactured by the manufacturing method of the liquid crystal display panel of the embodiment, the optical path of the first liquid crystal molecules 502 can be compensated due to the arrangement of the compensation layer 504 on the liquid crystal layer 50, so that the color cast problem of the large viewing angle of the liquid crystal display panel can be greatly improved; and because the compensation layer 504 is arranged inside the liquid crystal display panel, the compensation layer 504 cannot fall off, and the reliability of the liquid crystal display panel is greatly improved.
Second embodiment
Referring to fig. 4, fig. 4 is a schematic structural diagram of a liquid crystal display panel according to a second embodiment of the invention. The structure of the liquid crystal display panel of the present embodiment is substantially the same as that of the first embodiment, except that in the present embodiment, the liquid crystal layer 50 is not provided with the compensation layer 504, but the compensation layer 115 is provided on the first substrate 10. The compensation layer 115 may be disposed on a side of the first substrate 10 adjacent to the liquid crystal layer 50. Specifically, the compensation layer 115 may cover the pixel electrode 108, so that the protection layer 113 may be omitted.
The optical path of the compensation layer 115 is complementary to the optical path of the first liquid crystal molecules 502. Since the refractive indices of the first liquid crystal molecules 502 are different in the up-down and left-right directions, the refractive index of the compensation layer 115 is also set to be different in the up-down and left-right directions, and is set to be opposite to the refractive index of the first liquid crystal molecules 502, for example, assuming that the refractive index of the first liquid crystal molecules 502 in the up-down direction is larger than the refractive index in the left-right direction, the optical path length of the compensation layer 115 is set to be smaller than the refractive index in the left-right direction, so that the optical path length of the first liquid crystal molecules 502 is compensated. Specifically, the optical path difference of the compensation layer 115 may be 300 nanometers (nm).
The compensation layer 115 includes a compensation film and an alignment film that aligns liquid crystal molecules of the compensation film. The compensation film may include an a plate having a refractive index in an x direction of liquid crystal molecules different from a refractive index in a y direction and a refractive index in a z direction, and a C plate having a refractive index in an x direction different from a refractive index in a z direction and a refractive index in an x direction equal to a refractive index in a y direction; the compensation film may also include only an a-plate; the compensation film may also include only C-plates.
In this embodiment, when forming the lcd panel shown in fig. 4, the compensation film may be coated on the pixel electrode 108 before the alignment film is coated on the compensation film, that is, the alignment film is located on the side of the compensation film near the liquid crystal layer 50. Also, in the present embodiment, alignment films are provided on the first substrate 10 and the second substrate 30, respectively, to align the first liquid crystal molecules of the liquid crystal layer 50.
Referring to fig. 5a to 5e, which are color shift effect simulation graphs of liquid crystal display panels of different structures, fig. 5a is a color shift effect simulation graph of a single domain liquid crystal display panel without a compensation layer, fig. 5b is a color shift simulation graph of a dual domain liquid crystal display panel, fig. 5C is a color shift effect simulation graph of a single domain liquid crystal display panel including a c+a compensation layer, fig. 5d is a color shift effect simulation graph of a single domain liquid crystal display panel with a +a compensation layer, and fig. 5e is a color shift effect simulation graph of a single domain liquid crystal display panel with a +c compensation layer. Therefore, the effect of the single domain liquid crystal display panel with the additional compensation layer is similar to that of the double domain liquid crystal display panel, and therefore, the color cast of the liquid crystal display panel with the additional compensation layer in the embodiment is obviously improved.
Please refer to fig. 6a to 6o, which are a transmittance simulation diagram and a contrast simulation diagram of liquid crystal display panels with different structures. FIG. 6a is a graph showing the transmittance of a single-domain liquid crystal display panel without a compensation layer in a bright state, FIG. 6b is a graph showing the transmittance of a single-domain liquid crystal display panel without a compensation layer in a dark state, FIG. 6C is a graph showing the contrast ratio of a dual-domain liquid crystal display panel, FIG. 6d is a graph showing the transmittance of a dual-domain liquid crystal display panel in a bright state, FIG. 6e is a graph showing the transmittance of a dual-domain liquid crystal display panel in a dark state, FIG. 6f is a graph showing the contrast ratio of a single-domain liquid crystal display panel without a compensation layer, FIG. 6g is a graph showing the transmittance of a single-domain liquid crystal display panel with a compensation layer including a C+A in a dark state, fig. 6i is a contrast ratio simulation graph of a single domain liquid crystal display panel including a c+a compensation layer, fig. 6j is a transmittance simulation graph of a single domain liquid crystal display panel including a +a compensation layer in a bright state, fig. 6k is a transmittance simulation graph of a single domain liquid crystal display panel including a +a compensation layer in a dark state, fig. 6l is a contrast ratio simulation graph of a single domain liquid crystal display panel including a +a compensation layer, fig. 6m is a transmittance simulation graph of a single domain liquid crystal display panel including a +c compensation layer in a bright state, fig. 6n is a transmittance simulation graph of a single domain liquid crystal display panel including a +c compensation layer in a dark state, and fig. 6o is a contrast ratio simulation graph of a single domain liquid crystal display panel including a +c compensation layer. Please refer to the following table 1, which is a comparison of display parameters of lcd panels with different structures. As can be seen from fig. 6a to 6o and table 1, the viewing angle effect of the liquid crystal display panel provided with the a-plate is optimal.
In the liquid crystal display panel of the embodiment, the compensation layer 115 is disposed on the liquid crystal layer 50, so that the optical path length of the first liquid crystal molecules 502 can be compensated, and the color cast problem of the large viewing angle of the liquid crystal display panel can be greatly improved; and because the compensation layer 115 is arranged inside the liquid crystal display panel, the compensation layer 115 cannot fall off, and the reliability of the liquid crystal display panel is greatly improved.
Third embodiment
Referring to fig. 7, fig. 7 is a schematic structural diagram of a liquid crystal display panel according to a third embodiment of the invention. The structure of the liquid crystal display panel of the present embodiment is substantially the same as that of the first embodiment, except that in the present embodiment, the liquid crystal layer 50 is not provided with the compensation layer 504, and the compensation layer 315 is provided on the second substrate 30. The compensation layer 315 may be disposed on a side of the color resist layer 304 of the second substrate 30 adjacent to the liquid crystal layer 50, and the planarization layer 308 is disposed on a side of the compensation layer 315 adjacent to the liquid crystal layer 50.
The optical path length of the compensation layer 315 is complementary to the optical path length of the first liquid crystal molecules 502. Since the refractive indices of the first liquid crystal molecules 502 are different in the up-down and left-right directions, the refractive index of the compensation layer 315 is also set to be different in the up-down and left-right directions, and is set to be opposite to the refractive index of the first liquid crystal molecules 502, for example, assuming that the refractive index of the first liquid crystal molecules 502 in the up-down direction is larger than the refractive index in the left-right direction, the refractive index of the compensation layer 315 is set to be smaller in the up-down direction than the refractive index in the left-right direction, so that the optical path length of the first liquid crystal molecules 502 is compensated. Specifically, the optical path difference of the compensation layer 315 may be 300 nanometers (nm).
Referring to fig. 8 and 9, the compensation layer 315 includes a compensation film 316 and an alignment film 317, and the alignment film 317 aligns liquid crystal molecules of the compensation film 316. The compensation film 316 may include an a plate having a refractive index in an x direction of liquid crystal molecules different from a refractive index in a y direction and a refractive index in a z direction, and a C plate having a refractive index in an x direction different from a refractive index in a z direction and a refractive index in an x direction equal to a refractive index in a y direction; the compensation film 316 may also include only an a-plate; the compensation film 316 may also include only a C-plate.
In this embodiment, when forming the lcd panel shown in fig. 7, the compensation film 316 is coated on the side of the color resist layer 304 close to the liquid crystal layer 50, and the alignment film 317 is coated on the compensation film 316, so as to form the compensation layer 315, that is, the alignment film 317 is located on the side of the compensation film 316 close to the liquid crystal layer 50. In forming the alignment film 317, it may be formed by coating PI (polyimide resin) liquid, and then curing. Also, in the present embodiment, alignment films are provided on the first substrate 10 and the second substrate 30, respectively, to align the first liquid crystal molecules of the liquid crystal layer 50.
In the liquid crystal display panel of the embodiment, the compensation layer 315 is disposed on the liquid crystal layer 50, so that the optical path length of the first liquid crystal molecules 502 can be compensated, and the color cast problem of the large viewing angle of the liquid crystal display panel can be greatly improved; and because the compensation layer 315 is arranged inside the liquid crystal display panel, the compensation layer 315 can not fall off, and the reliability of the liquid crystal display panel is greatly improved.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (4)
1. The liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, the liquid crystal layer is arranged between the first substrate and the second substrate, the liquid crystal layer comprises first liquid crystal molecules, the liquid crystal display panel further comprises a compensation layer, the optical path of the compensation layer is complementary with the optical path of the first liquid crystal molecules, the liquid crystal display panel is characterized in that the first substrate comprises an alignment film, the second substrate does not comprise an alignment film, the compensation layer is arranged on one side, close to the second substrate, of the liquid crystal layer, the compensation layer is formed after the second liquid crystal molecules formed simultaneously with the first liquid crystal molecules during forming of the liquid crystal layer are solidified and have first direction alignment, the first liquid crystal molecules are aligned in a second direction different from the first direction through the alignment film on the first substrate, the first liquid crystal molecules are plane switching liquid crystals, and the second liquid crystal molecules are vertical alignment liquid crystals.
2. The liquid crystal display panel of claim 1, wherein the compensation layer has an optical path difference of 300 nm.
3. A method for manufacturing a liquid crystal display panel, comprising the steps of:
providing a first substrate and a second substrate, wherein an alignment film is arranged on only the first substrate in the first substrate and the second substrate, and the first substrate and the second substrate are oppositely arranged and assembled together;
injecting liquid crystal molecules between the first substrate and the second substrate to form a liquid crystal layer, wherein the liquid crystal layer comprises first liquid crystal molecules and second liquid crystal molecules, the first liquid crystal molecules are close to the first substrate, the second liquid crystal molecules are close to the second substrate, the first liquid crystal molecules are plane switching liquid crystals, the second liquid crystal molecules are vertically aligned liquid crystals, and the first liquid crystal molecules are aligned through the alignment film;
and the second liquid crystal molecules are aligned by utilizing ultraviolet light irradiation to form a compensation layer, the alignment directions of the first liquid crystal molecules and the second liquid crystal molecules are different, and the optical path of the compensation layer is complementary with the optical path of the first liquid crystal molecules.
4. The method for manufacturing a liquid crystal display panel according to claim 3, wherein the alignment of the second liquid crystal molecules is specifically: irradiating ultraviolet light on the liquid crystal layer on one side of the second substrate; or, irradiating ultraviolet light to the liquid crystal layer on only one side of the first substrate; or, the liquid crystal layer is irradiated with ultraviolet light on both one side of the first substrate and one side of the second substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010947979.9A CN112505970B (en) | 2020-09-10 | 2020-09-10 | Liquid crystal display panel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010947979.9A CN112505970B (en) | 2020-09-10 | 2020-09-10 | Liquid crystal display panel and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112505970A CN112505970A (en) | 2021-03-16 |
| CN112505970B true CN112505970B (en) | 2023-07-25 |
Family
ID=74953405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010947979.9A Active CN112505970B (en) | 2020-09-10 | 2020-09-10 | Liquid crystal display panel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112505970B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202256968U (en) * | 2011-10-20 | 2012-05-30 | 京东方科技集团股份有限公司 | Liquid crystal display |
| TW201600906A (en) * | 2014-06-26 | 2016-01-01 | 群創光電股份有限公司 | Liquid crystal display device |
| CN211014954U (en) * | 2020-01-10 | 2020-07-14 | 北京京东方显示技术有限公司 | Liquid crystal display panel, opposite substrate and liquid crystal display device |
-
2020
- 2020-09-10 CN CN202010947979.9A patent/CN112505970B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112505970A (en) | 2021-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2472187C2 (en) | Colour filter substrate and liquid crystal display device | |
| US20050195353A1 (en) | Liquid crystal display apparatus and method of manufacturing the same | |
| US20090046212A1 (en) | Liquid crystal display device and television receiver | |
| CN100476543C (en) | Liquid crystal display device | |
| CN110673412A (en) | Display panel and display device | |
| KR20150012093A (en) | Liquid crystal display and manufacturing method thereof | |
| US8908128B2 (en) | Color filter substrate and LCD device using it | |
| CN108983515B (en) | Liquid crystal display device, preparation method thereof and display device | |
| US10126602B2 (en) | Curved display device and fabricating method thereof | |
| US9891466B2 (en) | Liquid crystal display panel and fabrication method thereof | |
| JP2004151459A (en) | Substrate for liquid crystal display and liquid crystal display equipped with the same | |
| US20050140915A1 (en) | Liquid crystal display device having column spacers and method of fabricating the same | |
| CN107797349B (en) | Display panel | |
| US8189163B2 (en) | Display device | |
| JP2010026091A (en) | Circularly polarizing plate and liquid crystal display device | |
| CN112505970B (en) | Liquid crystal display panel and manufacturing method thereof | |
| CN109407389B (en) | Display panel and manufacturing method thereof | |
| US10962839B2 (en) | Liquid crystal display panel and method for producing liquid crystal display panel | |
| JP4868219B2 (en) | Liquid crystal display element, electronic device, and method for manufacturing liquid crystal display element | |
| US20110019136A1 (en) | Liquid crystal display device | |
| JP2006030907A (en) | Color filter substrate, manufacturing method therefor and liquid crystal display device | |
| US7001714B2 (en) | Method of manufacturing substrate for liquid crystal display device and method of manufacturing liquid crystal display device using same | |
| WO2018021521A1 (en) | Liquid crystal display panel and liquid crystal display device | |
| CN113671745B (en) | Display panel, preparation method thereof and display device | |
| JP2019090954A (en) | Color filter substrate and manufacturing method of the same, and display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |