CN112068363B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112068363B CN112068363B CN202010952151.2A CN202010952151A CN112068363B CN 112068363 B CN112068363 B CN 112068363B CN 202010952151 A CN202010952151 A CN 202010952151A CN 112068363 B CN112068363 B CN 112068363B
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- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
Abstract
The application discloses a display panel, which comprises a plurality of pixel units, wherein each pixel unit is provided with a plurality of sub-pixels, each sub-pixel is provided with a pixel electrode, the pixel electrode comprises a main part and a plurality of branch parts connected with the main part, the main part comprises a longitudinal main part and a transverse main part which are arranged in a mutually vertical and crossed mode, and each sub-pixel is divided into a plurality of domains by the longitudinal main part and the transverse main part; and taking the central line of the longitudinal trunk part as a symmetrical line or taking the central line of the transverse trunk part as a symmetrical line, wherein at least one of the domains on two sides of the longitudinal trunk part and the domains on two sides of the transverse trunk part are arranged asymmetrically.
Description
Technical Field
The present application relates to the field of display panels, and particularly to a display panel and a display device.
Background
With the continuous development of display devices, various new display technologies are continuously developed, and among them, transparent displays are receiving attention due to their wide application prospects. When the transparent display device works, a user can not only view the content displayed on the panel, but also view an object behind the panel through the panel. Transparent demonstration can merge techniques such as multi-touch, intelligent display, and as public information display's terminal, use in each field such as department store display window, refrigerator door, bus website, car windscreen, automatic vending machine, have synergistic effect such as show, interdynamic, advertisement, let the consumer enjoy the facility that scientific and technological innovation brought.
Among various transparent display technology routes, the LCD technology has attracted attention because of its characteristics such as mature technology and easy mass production. For a VA-type liquid crystal (Vertical Alignment liquid crystal) display, please refer to fig. 1, and fig. 1 is a schematic structural diagram of a sub-pixel of a display panel provided in the prior art, where the sub-pixel has a pixel electrode, the pixel electrode includes a main portion 10 and a plurality of branch portions 20 connected to the main portion 10, the main portion 10 includes a longitudinal main portion 11 and a transverse main portion 20, the longitudinal main portion 11 and the transverse main portion 20 are arranged perpendicularly and crosswise to each other, the longitudinal main portion 11 and the transverse main portion 12 divide each sub-pixel into 4 domains, an included angle between a slit of the pixel electrode in each domain and a polarizer is 45 °, and after power is applied, a liquid crystal falls to an angle of 45 ° with the polarizer. According to the formula of the transmittance, the adjacent domain liquid crystals in one sub-pixel have a phase difference of pi. According to the diffraction formula, the diffraction efficiency reaches the maximum value, the diffraction effect is the most serious, and the light is bent after passing through the liquid crystal screen, so that the blurring phenomenon is very serious.
Therefore, there is a need to develop a new liquid crystal display panel to overcome the drawbacks of the prior art.
Disclosure of Invention
An object of the present invention is to provide a display panel capable of solving a problem in the prior art that an object viewed through a screen becomes blurred due to a severe diffraction effect.
In order to achieve the above object, the present invention provides a display panel, including a plurality of pixel units, each pixel unit having a plurality of sub-pixels, each sub-pixel having a pixel electrode, the pixel electrode including a main portion and a plurality of branch portions connected to the main portion, the main portion including a longitudinal main portion and a transverse main portion, the longitudinal main portion and the transverse main portion being perpendicularly crossed with each other, the longitudinal main portion and the transverse main portion dividing each sub-pixel into a plurality of domains; and taking the central line of the longitudinal trunk part as a symmetrical line or taking the central line of the transverse trunk part as a symmetrical line, wherein at least one of the domains on two sides of the longitudinal trunk part and the domains on two sides of the transverse trunk part are arranged asymmetrically.
Further, in other embodiments, the longitudinal trunk portion and the transverse trunk portion divide the pixel electrode into 4 domains, and the 4 domains of the pixel electrode include a first region, a second region, a third region and a fourth region distributed along a cross shape.
Further, in other embodiments, the central line of the longitudinal trunk portion is taken as a symmetric line, the domains on both sides of the longitudinal trunk portion are asymmetrically arranged, and the central line of the transverse trunk portion is taken as a symmetric line, and the domains on both sides of the transverse trunk portion are symmetrically arranged; the first region and the third region have the same area, the second region and the fourth region have the same area, and the area of the first region is smaller than that of the second region.
Further, in another embodiment, the central line of the longitudinal trunk portion is taken as a symmetry line, the domains on both sides of the longitudinal trunk portion are symmetrically arranged, and the central line of the transverse trunk portion is taken as a symmetry line, and the domains on both sides of the transverse trunk portion are asymmetrically arranged; the first region and the second region have the same area, the third region and the fourth region have the same area, and the area of the first region is smaller than that of the third region.
Further, in another embodiment, the central line of the longitudinal trunk portion is taken as a symmetry line, the domains on both sides of the longitudinal trunk portion are asymmetrically arranged, and the central line of the transverse trunk portion is taken as a symmetry line, the domains on both sides of the transverse trunk portion are asymmetrically arranged; the areas of the first region, the second region, the third region, and the fourth region are all different.
Further, in other embodiments, wherein the area ratio of the first region to the second region is in the range of 1: 4-1: 2.
further, in other embodiments, wherein the phase diffraction intensity η of the pixel electrode m The formula is as follows:
wherein w is the width of the second region, d is the width of the first region, Φ is the phase difference, m is the diffraction order, wherein the smaller d is, the diffraction intensity η m The smaller.
Further, in other embodiments, liquid crystal molecules are included; the array substrate is arranged on one side of the liquid crystal molecules and provided with a plurality of pixel units; the opposite side substrate is arranged on the other side, far away from the array substrate, of the liquid crystal molecules; the first alignment film is arranged between the array substrate and the liquid crystal molecules; a second alignment film disposed between the opposite-side substrate and the liquid crystal molecules; the first polaroid is arranged on the other side of the array substrate, which is far away from the liquid crystal molecules; and the second polaroid is arranged on the other side of the opposite side substrate far away from the liquid crystal molecules.
Further, in other embodiments, the liquid crystal molecules orderly rotate under the action of the alignment film, thereby realizing display.
Further, in other embodiments, the inner side of the opposite substrate is provided with a common electrode.
Further, in another embodiment, a plurality of slits are formed between the branch portions on the pixel electrode, the slits located in the same domain of the sub-pixel unit are parallel, and an angle between an extending direction of the slits and the first polarizer is 45 °.
Further, in another embodiment, the slits in the first region and the slits in the fourth region extend in the same direction, the slits in the second region and the slits in the third region extend in the same direction, and the slits in the first region and the slits in the second region extend in a direction perpendicular to each other.
Further, in other embodiments, between two adjacent sub-pixels, the pixel electrodes in the two adjacent sub-pixels are symmetrically arranged with reference to the central line of the two adjacent sub-pixels. The pixel electrodes in the adjacent sub-pixels are symmetrically arranged, namely the areas of the first region in the sub-pixel and the second region in the sub-pixel adjacent to the first region are the same, and the extending directions of the slits in the first region and the slits in the second region are perpendicular, so that the color cast phenomenon under a large viewing angle can be avoided.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a display panel, which adjusts the area ratio of adjacent domains by changing the position of a longitudinal main part or a transverse main part, thereby weakening the diffraction effect and improving the condition of observing the blurring of an object through a screen; and the pixel electrodes in the adjacent sub-pixels are arranged symmetrically, so that the phenomenon of color cast under a large visual angle is avoided.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a sub-pixel structure of a display panel provided in the prior art;
fig. 2 is a schematic structural diagram of a sub-pixel of a display panel according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a sub-pixel of a display panel according to embodiment 2 of the present invention;
fig. 4 is a schematic structural diagram of a sub-pixel of a display panel according to embodiment 3 of the present invention.
Description of the drawings:
a trunk portion-10;
a longitudinal trunk-11; a transverse trunk-12;
a branch-20; a slit-21;
a first region-31; a second region-32;
a third region-33; fourth region-34.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Example 1
An embodiment of the present invention provides a display panel, which includes a plurality of pixel units, each pixel unit having a plurality of sub-pixels, referring to fig. 2, fig. 2 is a schematic structural diagram of the sub-pixels of the display panel provided in embodiment 1 of the present invention, and each sub-pixel has a pixel electrode.
The pixel electrode includes a trunk portion 10 and a plurality of branch portions 20 connected to the trunk portion, the trunk portion 10 includes a longitudinal trunk portion 11 and a transverse trunk portion 12, and the longitudinal trunk portion 11 and the transverse trunk portion 12 are disposed to intersect with each other perpendicularly.
The longitudinal and transverse stems 11 and 12 divide the pixel electrode into 4 domains, and the 4 domains of the pixel electrode include a first region 31, a second region 32, a third region 33 and a fourth region 34 distributed along a cross shape.
Taking the central line of the longitudinal trunk part 11 as a symmetrical line, the domains at two sides of the longitudinal trunk part 11 are asymmetrically arranged, taking the central line of the transverse trunk part 12 as a symmetrical line, and the domains at two sides of the transverse trunk part 12 are symmetrically arranged; the first region 31 and the third region 33 have the same area, the second region 32 and the fourth region 34 have the same area, and the area of the first region 31 is smaller than that of the second region 32.
Wherein, the area ratio of the first region 31 to the second region 32 is in the range of 1: 4-1: 2, in order not to affect the alignment process of the VA mode liquid crystal, the area ratio of the first region 31 to the second region 32 is preferably 1: 4-1: 2.
phase diffraction intensity eta of pixel electrode m The formula is as follows:
where w is the width of the second region 32, d is the width of the first region 31, Φ is the phase difference, m is the diffraction order, where the smaller d, the lower the diffraction intensity η m The smaller. Where Φ is π.
The display panel comprises liquid crystal molecules, an array substrate, a counter substrate, a first alignment film, a second alignment film, a first polarizer and a second polarizer.
The array substrate is arranged on one side of the liquid crystal molecules and is provided with a plurality of pixel units; the opposite side substrate is arranged on the other side of the liquid crystal molecules far away from the array substrate; the first alignment film is arranged between the array substrate and the liquid crystal molecules; the second alignment film is arranged between the opposite side substrate and the liquid crystal molecules; the first polaroid is arranged on the other side of the array substrate, which is far away from the liquid crystal molecules; the second polaroid is arranged on the other side, far away from the liquid crystal molecules, of the opposite side substrate.
The liquid crystal molecules orderly rotate back and forth under the action of the alignment film, so that display is realized, and a common electrode is arranged on the inner side of the opposite side substrate.
The upper branch 20 of the pixel electrode has a plurality of slits 21 therebetween, the slits 21 in the same domain of the sub-pixel unit are parallel, and the extending direction of the slits 21 forms an angle of 45 ° with the first polarizer.
The slits 21 in the first region 31 and the slits 21 in the fourth region 34 extend in the same direction, the slits 21 in the second region 32 and the slits 21 in the third region 33 extend in the same direction, and the slits 21 in the first region 31 and the slits 21 in the second region 32 extend in the direction perpendicular to each other.
Between two adjacent sub-pixels, the pixel electrodes in the two adjacent sub-pixels are symmetrically arranged by taking the central line of the two adjacent sub-pixels as a reference. The pixel electrodes in the adjacent sub-pixels are symmetrically arranged, that is, the areas of the first region 31 in the sub-pixel and the second region 32 in the sub-pixel adjacent to the first region 31 are the same, and the extending directions of the slits 21 in the first region 31 and the slits 21 in the second region 32 are perpendicular to each other, so that the color cast phenomenon at a large viewing angle can be avoided.
Example 2
The sub-pixel structure in this embodiment also has a longitudinal main portion and a transverse main portion, which are substantially the same as the corresponding structures in embodiment 1, and the same structures can refer to the corresponding descriptions in embodiment 1, and are not described again here. The main difference between the two is that the central line of the longitudinal trunk portion 11 is used as a symmetric line, the domains on both sides of the longitudinal trunk portion 11 are symmetrically arranged, the central line of the transverse trunk portion 12 is used as a symmetric line, and the domains on both sides of the transverse trunk portion 12 are asymmetrically arranged.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a sub-pixel of a display panel according to embodiment 2 of the present invention, in which areas of a first region 31 and a second region 32 are the same, areas of a third region 33 and a fourth region 34 are the same, and an area of the first region 31 is smaller than an area of the third region 33.
Wherein the area ratio of the first region 31 to the third region 33 is in the range of 1: 4-1: 2.
phase diffraction intensity eta of pixel electrode m The formula is as follows:
where w is the length of the third region 33, d is the length of the first region 31, Φ is the phase difference, m is the diffraction order, where the smaller d, the diffraction intensity η m The smaller.
Since the length of the pixel electrode is much larger than the width of the pixel electrode, this embodiment is not the best embodiment, and embodiment 1 is the best embodiment.
Example 3
The sub-pixel structure in this embodiment also has a longitudinal main portion and a transverse main portion, which are substantially the same as the corresponding structures in embodiment 1, and the same structures can refer to the corresponding descriptions in embodiment 1, and are not described again here. The main difference between the two is that the central line of the longitudinal trunk 11 is taken as a symmetry line, the domains at the two sides of the longitudinal trunk 11 are asymmetrically arranged, the central line of the transverse trunk 12 is taken as a symmetry line, and the domains at the two sides of the transverse trunk 12 are asymmetrically arranged
Referring to fig. 4, fig. 4 is a schematic structural diagram of a sub-pixel of a display panel provided in embodiment 3 of the present invention, in which areas of a first region 31, a second region 32, a third region 33, and a fourth region 34 are different.
The area ratio of the first region 31 to the fourth region 34 is in the range of 1: 4-1: 2.
phase diffraction intensity eta of pixel electrode m The formula is as follows:
where w is the width of the fourth region 34, d is the width of the first region 31, Φ is the phase difference, m is the diffraction order, where the smaller d is, the diffraction intensity η m The smaller.
The invention has the beneficial effects that: the invention provides a display panel, which adjusts the area ratio of adjacent domains by changing the position of a longitudinal main part 11 or a transverse main part 12, thereby weakening the diffraction effect and improving the condition of observing the blurring of an object through a screen; and the pixel electrodes in the adjacent sub-pixels are arranged symmetrically, so that the phenomenon of color cast under a large visual angle is avoided.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The display panel and the screen display device provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (6)
1. A display panel is characterized by comprising a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels, each sub-pixel is provided with a pixel electrode, the pixel electrode comprises a main part and a plurality of branch parts connected with the main part, the main part comprises a longitudinal main part and a transverse main part, the longitudinal main part and the transverse main part are arranged perpendicularly and crosswise with each other, and the longitudinal main part and the transverse main part divide each sub-pixel into a plurality of domains; taking the central line of the longitudinal trunk part as a symmetrical line or taking the central line of the transverse trunk part as a symmetrical line, wherein at least one of the domains on two sides of the longitudinal trunk part and the domains on two sides of the transverse trunk part are arranged asymmetrically; between two adjacent sub-pixels, the pixel electrodes in the two adjacent sub-pixels are symmetrically arranged by taking the central line of the two adjacent sub-pixels as a reference; the longitudinal trunk part and the transverse trunk part divide the pixel electrode into 4 domains, and the 4 domains of the pixel electrode comprise a first region, a second region, a third region and a fourth region which are distributed along a cross shape; taking the central line of the longitudinal trunk part as a symmetrical line, the domains at two sides of the longitudinal trunk part are asymmetrically arranged, and taking the central line of the transverse trunk part as a symmetrical line, the domains at two sides of the transverse trunk part are symmetrically arranged; the first region and the third region have the same area, the second region and the fourth region have the same area, and the area of the first region is smaller than that of the second region; phase diffraction intensity eta of the pixel electrode m The formula is as follows:
wherein w is the width of the second region, d is the width of the first region, Φ is a phase change value, and m is a diffraction order, wherein the smaller d is, the smaller the diffraction intensity is.
2. A display panel is characterized by comprising a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels, each sub-pixel is provided with a pixel electrode, the pixel electrode comprises a main part and a plurality of branch parts connected with the main part, the main part comprises a longitudinal main part and a transverse main part, the longitudinal main part and the transverse main part are arranged perpendicularly and crosswise with each other, and the longitudinal main part and the transverse main part divide each sub-pixel into a plurality of domains; taking the central line of the longitudinal trunk part as a symmetrical line or taking the central line of the transverse trunk part as a symmetrical line, wherein at least one of the domains on two sides of the longitudinal trunk part and the domains on two sides of the transverse trunk part are arranged asymmetrically; between two adjacent sub-pixels, the pixel electrodes in the two adjacent sub-pixels are symmetrically arranged by taking the central line of the two adjacent sub-pixels as a reference; the longitudinal trunk part and the transverse trunk part divide the pixel electrode into 4 domains, and the 4 domains of the pixel electrode comprise a first region, a second region, a third region and a fourth region which are distributed along a cross shape; taking the central line of the longitudinal trunk part as a symmetrical line, symmetrically arranging the domains at two sides of the longitudinal trunk part, taking the central line of the transverse trunk part as a symmetrical line, and asymmetrically arranging the domains at two sides of the transverse trunk part; the first area and the second area have the same area, the third area and the fourth area have the same area, and the area of the first area is smaller than that of the third area; phase diffraction intensity eta of the pixel electrode m The formula is as follows:
wherein w is the width of the third region, d is the width of the first region, Φ is a phase change value, and m is a diffraction order, wherein the smaller d is, the smaller the diffraction intensity is.
3. A display panel is characterized by comprising a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels, each sub-pixel is provided with a pixel electrode, the pixel electrode comprises a main part and a plurality of branch parts connected with the main part, the main part comprises a longitudinal main part and a transverse main part, the longitudinal main part and the transverse main part are arranged perpendicularly and crosswise with each other, and the longitudinal main part and the transverse main part divide each sub-pixel into a plurality of domains; taking the central line of the longitudinal trunk part as a symmetrical line or taking the central line of the transverse trunk part as a symmetrical line, wherein at least one of the domains on two sides of the longitudinal trunk part and the domains on two sides of the transverse trunk part are arranged asymmetrically; between two adjacent sub-pixels, the pixel electrodes in the two adjacent sub-pixels are symmetrically arranged by taking the central line of the two adjacent sub-pixels as a reference; the longitudinal trunk part and the transverse trunk part divide the pixel electrode into 4 domains, and the 4 domains of the pixel electrode comprise a first region, a second region, a third region and a fourth region which are distributed along a cross shape; taking the central line of the longitudinal trunk part as a symmetrical line, and taking the domains at two sides of the longitudinal trunk part as asymmetrical arrangement, and taking the central line of the transverse trunk part as a symmetrical line, and taking the domains at two sides of the transverse trunk part as asymmetrical arrangement; the areas of the first region, the second region, the third region and the fourth region are different; phase diffraction intensity eta of the pixel electrode m The formula is as follows:
wherein w is the width of the fourth region, d is the width of the first region, Φ is a phase change value, and m is a diffraction order, wherein the smaller d is, the smaller the diffraction intensity is.
4. The display panel according to claim 1, wherein an area ratio of the first region to the second region is in a range of 1: 4-1: 2.
5. the display panel according to any one of claims 1 to 3, further comprising
Liquid crystal molecules;
the array substrate is arranged on one side of the liquid crystal molecules and provided with a plurality of pixel units;
the opposite side substrate is arranged on the other side, far away from the array substrate, of the liquid crystal molecules;
the first alignment film is arranged between the array substrate and the liquid crystal molecules;
a second alignment film disposed between the opposite-side substrate and the liquid crystal molecules;
the first polaroid is arranged on the other side of the array substrate, which is far away from the liquid crystal molecules;
and the second polaroid is arranged on the other side of the opposite side substrate far away from the liquid crystal molecules.
6. The display panel according to claim 5, wherein a plurality of slits are formed between the branches of the pixel electrode, the slits in the same domain of the sub-pixel are parallel, and the extending direction of the slits forms an angle of 45 ° with the first polarizer.
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| CN112987415B (en) * | 2021-03-12 | 2023-07-25 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel having a light shielding layer |
| CN113281941B (en) * | 2021-04-29 | 2022-07-12 | 深圳市华星光电半导体显示技术有限公司 | Display panel |
| CN114296280B (en) * | 2021-12-23 | 2024-01-26 | 绵阳惠科光电科技有限公司 | Display panel and vehicle |
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