CN110703516A - Pixel electrode - Google Patents
Pixel electrode Download PDFInfo
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- CN110703516A CN110703516A CN201911007994.9A CN201911007994A CN110703516A CN 110703516 A CN110703516 A CN 110703516A CN 201911007994 A CN201911007994 A CN 201911007994A CN 110703516 A CN110703516 A CN 110703516A
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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
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a pixel electrode, wherein the pixel electrode area is divided into one or more domains, at least two branch electrodes which are mutually parallel and distributed at intervals are respectively arranged in each domain, and at least one end of each branch electrode extends to the edge of a pixel and exceeds the edge of an opening area of the pixel. Through the design, the direction of the fringe electric field can be effectively improved, the problem of fringe dark fringes can be improved on the one hand, and the problem of color washout of a horizontal visual angle can be improved on the other hand.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a pixel electrode.
Background
Liquid crystal displays have become widely used display devices for various electronic devices such as mobile phones, personal digital assistants, digital cameras, computer screens, or notebook computer screens. The liquid crystal display comprises a backlight module and a liquid crystal display panel, wherein the liquid crystal display panel is composed of two substrates and a liquid crystal layer filled between the two substrates. The manufacturing process of the liquid crystal display panel is various, and a Vertical Alignment (VA) liquid crystal display panel is currently seen.
In the VA liquid crystal display panel, the unit pixel electrode has two structures of an opening and a seal. The pixel electrode with the opening structure is easy to have a dark line phenomenon between the electrodes because the electric field at the edge of the electrode has no relation and the electric field without the sealing structure has high intensity. The pixel electrode of the sealing structure comprises a rectangular outer frame, a cross keel and four groups of branch electrodes, but because the extending direction of the frame is different from the extending direction of the four groups of branch electrodes, dark stripes are easy to appear at the rectangular outer frame, the penetration rate of the pixel is affected, and the display brightness of the liquid crystal display panel is reduced.
Disclosure of Invention
The embodiment of the invention provides a pixel electrode which can improve the direction of a fringe electric field and improve the display effect of a pixel fringe.
To solve the above problem, in a first aspect, the present invention provides a pixel electrode:
the pixel electrode area is divided into one or more domains, at least two branch electrodes which are mutually parallel and distributed at intervals are respectively arranged in each domain, and at least one end of each branch electrode extends to the edge of the pixel and exceeds the edge of the opening area of the pixel.
Further, the distance from the outer end point of the branch electrodes to the edge of the beyond opening area is greater than or equal to 0.5 micrometer and less than or equal to 5 micrometers.
Further, the pixel electrode further includes a border electrode, wherein the border electrode is a square outer frame structure, an outer edge of the square outer frame structure is disposed along an edge of the pixel opening area or inside the pixel opening area, the outer edge is electrically connected to the end of the main electrode, and outer end points of the plurality of branch electrodes exceed an outer frame of the border electrode.
Further, the distance from the outer end points of the plurality of branch electrodes to the outer frame of the edge electrode is greater than or equal to 0.5 micrometer and less than or equal to 5 micrometers.
Further, the width of any one side of the edge electrode is 4-6 um.
Furthermore, the outer end points of the plurality of branch electrodes are arranged along the edge of the pixel opening area, the outer edge of the square outer frame structure of the edge electrode is arranged in the pixel opening area, the distance between the outer edge of the square outer frame structure of the edge electrode and the edge of the pixel opening area is more than or equal to 0.5 micrometer and less than or equal to 5 micrometers, and the width of any edge of the edge electrode is 1-6 um.
Further, the width of any side of the edge electrode is 1-3 um.
Furthermore, the pixel electrode further comprises a trunk electrode with a cross-shaped structure, the pixel area is divided into four domains, namely a first electrode area, a second electrode area, a third electrode area and a fourth electrode area, the first electrode area is provided with a first branch electrode, the second electrode area is provided with a second branch electrode, the third electrode area is provided with a third branch electrode, the fourth electrode area is provided with a fourth branch electrode, one end of each branch electrode is electrically connected with the trunk electrode, the other end of each branch electrode extends out of the pixel area, the included angle between the first branch electrode and the horizontal direction is alpha degrees, the included angle between the second branch electrode and the horizontal direction is (180-alpha degrees), the included angle between the third branch electrode and the horizontal direction is- (180-alpha) degrees, the included angle between the fourth branch electrode and the horizontal direction is-alpha degrees, wherein alpha is more than 0 and less than 90.
Further, α is 45.
In addition, the invention also provides a display panel comprising the pixel electrode.
Has the advantages that: the invention provides a pixel electrode, which is characterized in that the outer end points of a plurality of branch electrodes exceed the opening area of a pixel by improving the design of the edge of the electrode, particularly when the pixel electrode does not comprise the edge electrode; when the pixel electrode comprises an edge electrode, the edge electrode is of a square outer frame structure, is arranged along or in the pixel opening area, is electrically connected with the tail end of the main electrode, and the outer end points of the branch electrodes exceed the outer frame of the edge electrode. Through the design, the direction of the fringe electric field can be effectively improved, so that liquid crystal molecules are more arranged in the 45-degree direction, the problem of fringe dark fringes can be improved on one hand, and the problem of color washout of a horizontal visual angle can be improved on the other hand.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a preferred embodiment of a pixel electrode according to the present invention;
FIG. 2 is a schematic flow chart of another preferred embodiment of a pixel electrode according to the present invention;
fig. 3 is a schematic flow chart of another preferred embodiment of the pixel electrode according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Embodiments of the present invention provide a pixel electrode, which will be described in detail below.
In a preferred embodiment, there is provided a pixel electrode, referring to fig. 1, including:
the main electrode 1 is in a cross-shaped structure, one pixel is divided into four electrode areas, namely a first electrode area 21, a second electrode area 22, a third electrode area 23 and a fourth electrode area 24, and four end points of the main electrode 1 are respectively arranged on four edges corresponding to the pixel opening area 4;
the plurality of branch electrodes 3 include at least two first branch electrodes 31 located in the first electrode region 21 and spaced from each other in parallel, at least two second branch electrodes 32 located in the second electrode region 22 and spaced from each other in parallel, at least two third branch electrodes 33 located in the third electrode region 23 and spaced from each other in parallel, and at least two fourth branch electrodes 34 located in the fourth electrode region 24 and spaced from each other in parallel, one end of each of the branch electrodes 3 is electrically connected to the trunk electrode 1, the other end extends outward, the outer end of each of the branch electrodes 3 exceeds the opening region 4 of the pixel, the distance from the outer end of each of the branch electrodes 3 to the edge of the exceeding opening region 4 is d, and d is greater than or equal to 0.5 μm and less than or equal to 5 μm.
In a preferred embodiment, there is provided a pixel electrode, referring to fig. 2, including:
an edge electrode 5 having a square outer frame structure, wherein an outer frame of the edge electrode 5 is provided along an edge of the pixel opening area 4;
the main electrode 1 is in a cross-shaped structure, one pixel is divided into four electrode areas, namely a first electrode area 21, a second electrode area 22, a third electrode area 23 and a fourth electrode area 24, four end points of the main electrode 1 are respectively arranged on four edges corresponding to the pixel opening area 4, and each tail end of the main electrode 1 is electrically connected with the edge electrode 5;
a plurality of branch electrodes 3, including at least two first branch electrodes 31 located in the first electrode region 21 and spaced apart from each other in parallel, at least two second branch electrodes 32 located in the second electrode region 22 and spaced apart from each other in parallel, at least two third branch electrodes 33 located in the third electrode region 23 and spaced apart from each other in parallel, and at least two fourth branch electrodes 34 located in the fourth electrode region 24 and spaced apart from each other in parallel, wherein one end of each of the plurality of branch electrodes 3 is electrically connected to the main electrode 1, and the other end extends outward,
the outer end points of the branch electrodes 3 exceed the outer side frame of the edge electrode 5, the distance between the outer end points of the branch electrodes 3 and the outer side frame of the edge electrode 5 is d, d is more than or equal to 0.5 mu m and less than or equal to 5 mu m,
the width of each edge of the edge electrode 5 is a, and a is more than or equal to 4 mu m and less than or equal to 6 mu m.
In a preferred embodiment, there is provided a pixel electrode, referring to fig. 3, including:
an edge electrode 5 having a square outer frame structure, wherein an outer frame of the edge electrode 5 is disposed within a frame of the pixel opening area 4;
the main electrode 1 is in a cross-shaped structure, one pixel is divided into four electrode areas, namely a first electrode area 21, a second electrode area 22, a third electrode area 23 and a fourth electrode area 24, four end points of the main electrode 1 are respectively arranged on four edges corresponding to the pixel opening area 4, and each tail end of the main electrode 1 is electrically connected with the edge electrode 5;
a plurality of branch electrodes 3, including at least two first branch electrodes 31 located in the first electrode region 21 and spaced apart from each other in parallel, at least two second branch electrodes 32 located in the second electrode region 22 and spaced apart from each other in parallel, at least two third branch electrodes 33 located in the third electrode region 23 and spaced apart from each other in parallel, and at least two fourth branch electrodes 34 located in the fourth electrode region 24 and spaced apart from each other in parallel, wherein one end of each of the plurality of branch electrodes 3 is electrically connected to the main electrode 1, and the other end extends outward, and outer end points of the plurality of branch electrodes 3 are disposed along a frame of the pixel opening region 4,
the distance from the outer end points of the branch electrodes 3 to the outer side frame of the edge electrode 5 is d, d is more than or equal to 0.5 mu m and less than or equal to 5 mu m, the width of each side of the edge electrode 5 is a, a is more than or equal to 1 mu m and less than or equal to 6 mu m, more preferably, a is more than or equal to 1 mu m and less than or equal to 3 mu m,
since the branch electrodes 3 protruding out of the pixel opening area 4 may cause an increase in parasitic capacitance, in the present embodiment, all the branch electrodes 3 are limited within the pixel opening area 4, and the edge electrodes 5 are retracted to realize a structure in which the branch electrodes 3 protrude outward, but on the other hand, the total opening area is reduced, and therefore, the opening area can be enlarged as much as possible by reducing the width a of the edge electrodes.
In a preferred embodiment, the angle between the first branch electrode 21 and the horizontal direction is α °, the angle between the second branch electrode 22 and the horizontal direction is (180- α) °, the angle between the third branch electrode 23 and the horizontal direction is- (180- α) °, and the angle between the fourth branch electrode 24 and the horizontal direction is- α °, wherein 0 < α < 90, and more preferably, α is 45.
In a preferred embodiment, the material of the pixel electrode is indium tin oxide.
In addition, in the embodiments provided above, the pixel electrodes are all distributed in four domains, but in practical applications, other distributed modes may be available, such as 1Domain/2Domain/8Domain or other Domain-dividing modes, which all belong to the scope of the present invention.
In a specific implementation, each unit or structure may be implemented as an independent entity, or may be combined arbitrarily to be implemented as one or several entities, and the specific implementation of each unit or structure may refer to the foregoing method embodiment, which is not described herein again.
The above detailed description is provided for a pixel electrode according to an embodiment of the present invention, and the principle and the implementation of the present invention are explained herein by applying a specific example, and the above description of the embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The pixel electrode is characterized in that the pixel electrode area is divided into one or more domains, at least two branch electrodes which are mutually parallel and distributed at intervals are respectively arranged in each domain, and at least one end of each branch electrode extends to the edge of a pixel and exceeds the edge of an opening area of the pixel.
2. The pixel electrode according to claim 1, wherein a distance from an outer end point of the plurality of branch electrodes to the edge of the excess opening area is 0.5 μm or more and 5 μm or less.
3. The pixel electrode according to claim 1, further comprising a border electrode, wherein the border electrode is a square frame structure, an outer edge of the square frame structure is disposed along a border of the pixel opening area or within the pixel opening area, and is electrically connected to the end of the main electrode, and outer end points of the branch electrodes exceed an outer frame of the border electrode.
4. The pixel electrode according to claim 3, wherein a distance from the outer end points of the plurality of branch electrodes to the outer frame of the edge electrode is greater than or equal to 0.5 micrometers and less than or equal to 5 micrometers.
5. The pixel electrode according to claim 4, wherein a width of any one side of the edge electrode is 4-6 um.
6. The pixel electrode according to claim 3, wherein the outer ends of the plurality of branch electrodes are disposed along the edge of the pixel opening area, the outer edge of the square frame structure of the edge electrode is disposed within the pixel opening area, the distance from the outer edge of the square frame structure of the edge electrode to the edge of the pixel opening area is greater than or equal to 0.5 micrometers and less than or equal to 5 micrometers, and the width of any one side of the edge electrode is 1-6 um.
7. The pixel electrode according to claim 6, wherein a width of any one side of the edge electrode is 1-3 um.
8. The pixel electrode according to claim 1, further comprising a trunk electrode having a cross-shaped configuration, wherein the pixel region is divided into four domains, namely, a first electrode region, a second electrode region, a third electrode region and a fourth electrode region, the first electrode region is provided with a first branch electrode, the second electrode region is provided with a second branch electrode, the third electrode region is provided with a third branch electrode, the fourth electrode region is provided with a fourth branch electrode, one end of the plurality of branch electrodes is electrically connected to the trunk electrode, the other end thereof extends out of the pixel region, the first branch electrode has an angle α ° with the horizontal direction, the second branch electrode has an angle of (180- α) °withthe horizontal direction, and the third branch electrode has an angle of- (180- α) °withthe horizontal direction, the included angle between the fourth branch electrode and the horizontal direction is-alpha degrees, wherein alpha is more than 0 and less than 90.
9. The pixel electrode according to claim 8, wherein α is 45.
10. A display panel comprising the pixel electrode according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911007994.9A CN110703516A (en) | 2019-10-22 | 2019-10-22 | Pixel electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911007994.9A CN110703516A (en) | 2019-10-22 | 2019-10-22 | Pixel electrode |
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|---|---|
| CN110703516A true CN110703516A (en) | 2020-01-17 |
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| CN201911007994.9A Pending CN110703516A (en) | 2019-10-22 | 2019-10-22 | Pixel electrode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258123A (en) * | 2020-03-16 | 2020-06-09 | Tcl华星光电技术有限公司 | Display panel |
| US11415848B2 (en) | 2020-03-16 | 2022-08-16 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display panel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202710885U (en) * | 2009-06-26 | 2013-01-30 | 夏普株式会社 | Liquid-crystal display device |
| CN104049420A (en) * | 2013-03-15 | 2014-09-17 | 三星显示有限公司 | Liquid crystal display |
| CN106094368A (en) * | 2016-08-26 | 2016-11-09 | 深圳市华星光电技术有限公司 | Pixel electrode |
| US20160363823A1 (en) * | 2015-06-10 | 2016-12-15 | Samsung Display Co. Ltd. | Liquid crystal display |
-
2019
- 2019-10-22 CN CN201911007994.9A patent/CN110703516A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202710885U (en) * | 2009-06-26 | 2013-01-30 | 夏普株式会社 | Liquid-crystal display device |
| CN104049420A (en) * | 2013-03-15 | 2014-09-17 | 三星显示有限公司 | Liquid crystal display |
| US20160363823A1 (en) * | 2015-06-10 | 2016-12-15 | Samsung Display Co. Ltd. | Liquid crystal display |
| CN106094368A (en) * | 2016-08-26 | 2016-11-09 | 深圳市华星光电技术有限公司 | Pixel electrode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258123A (en) * | 2020-03-16 | 2020-06-09 | Tcl华星光电技术有限公司 | Display panel |
| US11415848B2 (en) | 2020-03-16 | 2022-08-16 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display panel |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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Application publication date: 20200117 |