CN109375435A - Pixel electrode, thin-film transistor array base-plate and display panel - Google Patents

Pixel electrode, thin-film transistor array base-plate and display panel Download PDF

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Publication number
CN109375435A
CN109375435A CN201811569938.XA CN201811569938A CN109375435A CN 109375435 A CN109375435 A CN 109375435A CN 201811569938 A CN201811569938 A CN 201811569938A CN 109375435 A CN109375435 A CN 109375435A
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China
Prior art keywords
branch
pixel electrode
width
electrode
electrodes
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Pending
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CN201811569938.XA
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Chinese (zh)
Inventor
郝思坤
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to CN201811569938.XA priority Critical patent/CN109375435A/en
Priority to PCT/CN2019/071843 priority patent/WO2020124718A1/en
Publication of CN109375435A publication Critical patent/CN109375435A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/134309Electrodes characterised by their geometrical arrangement
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/13439Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/1368Active matrix addressed cells in which the switching element is a three-electrode device

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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)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Geometry (AREA)
  • Liquid Crystal (AREA)
  • Thin Film Transistor (AREA)

Abstract

The application discloses a kind of pixel electrode, thin-film transistor array base-plate and display panel, by make the branch electrodes of pixel electrode both ends width and branch electrodes intermediate width difference to improve the penetrance of pixel electrode each region.

Description

Pixel electrode, thin-film transistor array base-plate and display panel
Technical field
This application involves field of display technology more particularly to a kind of pixel electrodes, thin-film transistor array base-plate and display Panel.
Background technique
Liquid crystal display is the display with high-resolution color screen, has been increasingly becoming various electronic equipments such as Mobile phone, personal digital assistant (PDA), digital camera, computer screen and laptop screen are widely applied Display.
The liquid crystal display generallyd use at present usually by thin film transistor base plate, color membrane substrates and is located at film crystal Liquid crystal layer between pipe substrate and color membrane substrates forms, by glass substrate and electrode on thin film transistor base plate and color membrane substrates Deng composition.When having electrode on thin film transistor base plate and color membrane substrates, the display of longitudinal electric field mode can be formed, such as Twisted-nematic formula (Twist Nematic, TN) mode, vertical orientation (Vertical Alignment, VA) mode, and in order to Solve more quadrant vertical orientation technologies (Multi-domain Vertical Alignment, MVA) of the narrow exploitation in visual angle;Separately One class display is to form lateral electric field mode, and electrode is only positioned at the side of thin film transistor base plate or color membrane substrates, such as plane Convert (In-plane switching, IPS) mode, fringe field switching (Fringe Field Switching, FFS) mode Deng.VA mode display the features such as its high opening, high-resolution, wide viewing angle as large size panels such as LCD TVs to use, so And the pixel liquid crystal low efficiency for the VA mode display for using conventional method to design, lead to the optics penetrance of liquid crystal display It is low.As shown in Figure 1, its structural schematic diagram for the thin film transistor (TFT) of VA mode display, the pixel of thin film transistor (TFT) array side 10 structure of electrode is herring-bone form, pixel electrode 10 by and be divided into multiple regions to improve viewing angle characteristic, Fig. 2 is thin shown in Fig. 1 The penetrance figure of 10 different location of pixel electrode of film transistor, wherein Fig. 2 a is picture when the branch electrodes of pixel electrode are wider The penetrance figure of plain 10 different location of electrode, Fig. 2 b are 10 different location of pixel electrode when the branch electrodes of pixel electrode are relatively narrow Penetrance figure, as shown in Figure 2, when the branch electrodes of composition pixel electrode 10 are using traditional structure design, it is difficult to keep pixel electric Extremely each region reaches maximum penetration rate.
Summary of the invention
In view of the deficiencies in the prior art, the application provides a kind of pixel electrode, and it is each which can improve pixel electrode The penetrance in a region.
To achieve the above object, technical solution is as follows.
A kind of pixel electrode, the pixel electrode include:
Stem portion, the stem portion include horizontal main electrode and vertical main electrode, the horizontal main electrode and institute Vertical main electrode is stated to be mutually perpendicular to and the pixel electrode is divided into four branch portion areas;
Branch portion, the branch of the branch part in four branch portion areas, in each branch portion area Portion includes branch electrodes a plurality of parallel and along preset direction arrangement, is provided with slit between the adjacent branch electrodes, described It is of different size among the width at branch electrodes both ends and the branch electrodes.
In pixel electrodes, the width at the branch electrodes both ends is less than the width among the branch electrodes.
In pixel electrodes, the width of the branch electrodes is gradually reduced from centre to both ends.
In pixel electrodes, the width at the branch electrodes both ends is greater than the width among the branch electrodes.
In pixel electrodes, the width of the branch electrodes is gradually increased from centre to both ends.
In pixel electrodes, the branch electrodes include first end, second end and be located at the first end and institute The middle part between second end is stated, the width of the first end is greater than the width of the second end, and the width of the second end is big In the width of the middle part.
In pixel electrodes, the angle between the preset direction and the horizontal main electrode is 45 degree.
In pixel electrodes, the material for preparing of the pixel electrode is one of tin indium oxide or indium zinc oxide.
The another object of the application is to provide a kind of thin-film transistor array base-plate.
A kind of thin-film transistor array base-plate, the thin-film transistor array base-plate include pixel electrodes.
The further object of the application is to provide a kind of display panel, and the display panel includes above-mentioned thin film transistor (TFT) array Substrate.
The utility model has the advantages that the application provides a kind of pixel electrode, thin-film transistor array base-plate and display panel, by making picture The branch electrodes both ends width of plain electrode and the intermediate width difference of branch electrodes are to improve penetrating for pixel electrode each region Rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the thin film transistor (TFT) of tradition VA mode display;
Fig. 2 is the penetrance figure of the pixel electrode different location of thin film transistor (TFT) in Fig. 1, and Fig. 2 a is the branch of pixel electrode The penetrance figure of different location when electrode is wide, Fig. 2 b are the penetrance of different location when the branch electrodes of pixel electrode are narrow Figure;
Fig. 3 is the structural schematic diagram of the application first embodiment pixel electrode;
Fig. 4 is the penetrance figure that pixel electrode shown in Fig. 3 is applied to pixel electrode different location when VA mode display;
Fig. 5 is the structural schematic diagram of the application second embodiment pixel electrode;
Fig. 6 is the structural schematic diagram of the application 3rd embodiment pixel electrode;
Fig. 7 is the structural schematic diagram of the application fourth embodiment pixel electrode.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description.Obviously, described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, those skilled in the art's every other implementation obtained without creative efforts Example, shall fall in the protection scope of this application.
The application provides a kind of pixel electrode, which includes:
Stem portion, stem portion include horizontal main electrode and vertical main electrode, and horizontal main electrode and vertical trunk are electric Pole is mutually perpendicular to and pixel electrode is divided into four branch portion areas;
Branch portion, branch part in four branch portion areas, the branch portion in each branch portion area include it is a plurality of parallel and Along the branch electrodes of preset direction arrangement, slit, the width at branch electrodes both ends and branch are provided between contiguous branch electrode It is of different size among electrode.
Among width and branch electrodes of the above scheme by making the branch electrodes both ends of pixel electrode it is of different size with Improve the penetrance of each region of pixel electrode.
Fig. 3 is the pixel electrode 20 of the application first embodiment, which includes:
Stem portion 200, stem portion 200 include horizontal main electrode 201 and vertical main electrode 202, horizontal main electrode 201 and vertical main electrode 202 be mutually perpendicular to and pixel electrode 20 be divided into four branch portion areas;
Branch portion, branch part in four branch portion areas, the branch portion in each branch portion area include it is a plurality of parallel and Along the branch electrodes 210 of preset direction arrangement, slit, the width at 210 both ends of branch electrodes are provided between contiguous branch electrode 210 Degree is less than the width among branch electrodes 210.
Branch electrodes 210 are including first end 211 and second end 212 and between first end 211 and second end 212 Middle part 213.In the present embodiment, the width of first end 211 and second end 212 is of same size, the width of first end 211 and The width of second end 212 is respectively less than the width of middle part 213.In other embodiments, the width and second end of first end 211 212 width can also be different, and the width of first end 211 and the width of second end 212 are respectively less than the width of middle part 213.
In the present embodiment, preset direction and the angle of horizontal main electrode 201 are 45 degree, in other embodiments, in advance Set direction and the angle of horizontal main electrode 201 may be the angle between 0 degree to 90 degree, and the application does not do specific limit It is fixed;The branch electrodes 210 in area of contiguous branch portion are with horizontal main electrode 201 or vertical main electrode 202 for center axisymmetrical Setting.The material for preparing of pixel electrode 20 is one of tin indium oxide or indium zinc oxide;Pixel electrode with a thickness of 1 nanometer- 40 nanometers.
As shown in figure 4, it is that pixel electrode 20 shown in the present embodiment Fig. 3 is applied to Same Wavelength color when VA mode display Light (identical as the coloured light of penetrance figure of 10 different location of pixel electrode in Fig. 2 is formed) wearing in 20 different location of pixel electrode Ordinate is respectively 20 lateral position coordinate of pixel electrode (transverse coordinate axis and level on the left of saturating rate figure, Fig. 4 abscissa and Fig. 4 Main electrode 201 is parallel) and lengthwise position coordinate, the right side Fig. 4 ordinate is penetrance coordinate, and as shown in Figure 4,210 institutes are in place The penetrance highest of (branch electrodes) is set, penetrance herein is close to 0.3;203 positions are (between contiguous branch electrode Gap) penetrance take second place, penetrance is between 0.22-0.28;The penetrance of 205 positions (periphery of branch portion) is 0.1- 0.2.And in fig. 2 a, the penetrance of 101a (periphery of branch portion) position is 0.1-0.15, and the position 102a is (adjacent Gap between branch electrodes) penetrance between 0.22-0.28, the penetrance of the position 103a (branch electrodes) is close 0.3;In figure 2b, the penetrance of the position 101b (periphery of branch portion) is 0.18-0.2, the position 102b (branch's electricity Gap between pole) it is 0.22-0.28, the penetrance of the position 103b (branch electrodes) is close to 0.3.Relative to Fig. 2 a and figure Penetrance is that region shared by 0.1-0.2 is reduced in entire pixel electrode in 2b, Fig. 4, and penetrance is 0.22-0.28 and penetrates Rate increases in entire pixel electrode close to region shared by 0.3.In conclusion the present embodiment pixel electrode is applied to VA mould Pixel electrode can improve the penetrance of each region of pixel electrode when formula display.
Compared with the pixel electrode penetrance of the display based on conventional pixel electrode design, the present embodiment pixel electrode is answered For the penetrance of each region of pixel electrode can be improved when VA mode display.
Fig. 5 is the pixel electrode 30 of the application second embodiment, which includes:
Stem portion 300, stem portion 300 include horizontal main electrode 301 and vertical main electrode 302, horizontal main electrode 301 and vertical main electrode 302 be mutually perpendicular to and pixel electrode 30 be divided into four branch portion areas;
Branch portion, branch part in four branch portion areas, the branch portion in each branch portion area include it is a plurality of parallel and Be provided with slit along the branch electrodes 310 of preset direction arrangement, between contiguous branch electrode 310, the width of branch electrodes 310 by Centre is gradually reduced to both ends.
The opposite two sides of branch electrodes 310 are two opposite camber lines, the recess section of two camber lines be oppositely arranged so that The width of branch electrodes 311 is gradually reduced from centre to both ends.In the present embodiment, branch electrodes 310 include first end 311, Second end 312 and the middle part 313 between first end 311 and second end 312, the width and second end of first end 311 312 width is respectively less than the width of middle part 313, and the relative size of the width of the width and second end 312 of first end 311 is not made It is specific to limit;In the present embodiment, two arc curvatures of a curve are different, and in other embodiments, two arc curvatures of a curve can also With identical.
Fig. 6 is the pixel electrode 40 of the application 3rd embodiment, which includes:
Stem portion 400, stem portion 400 include horizontal main electrode 401 and vertical main electrode 402, horizontal main electrode 401 and vertical main electrode 402 be mutually perpendicular to and pixel electrode 40 be divided into four branch portion areas;
Branch portion, branch part in four branch portion areas, the branch portion in each branch portion area include it is a plurality of parallel and Along the branch electrodes 410 of preset direction arrangement, slit, the width at 410 both ends of branch electrodes are provided between contiguous branch electrode 410 Degree is greater than the width among branch electrodes 410.
Branch electrodes 410 are including first end 411 and second end 412 and between first end 411 and second end 412 Middle part 413.In the present embodiment, the width of first end 411 and second end 412 is of same size, the width of first end 411 and The width of second end 412 is all larger than the width of middle part 413.In other embodiments, the width and second end of first end 411 412 width can also be different, but the width of first end 411 and the width of second end 412 are respectively less than the width of middle part 413, For example, the width of first end 411 is greater than the width of second end 412, the width of second end 412 is greater than the width of middle part 413.
Fig. 7 is the pixel electrode 50 of the application fourth embodiment, which includes:
Stem portion 500, stem portion 500 include horizontal main electrode 501 and vertical main electrode 502, horizontal main electrode 501 and vertical main electrode 502 be mutually perpendicular to and pixel electrode 50 be divided into four branch portion areas;
Branch portion, branch part in four branch portion areas, the branch portion in each branch portion area include it is a plurality of parallel and Be provided with slit along the branch electrodes 510 of preset direction arrangement, between contiguous branch electrode 510, the width of branch electrodes 510 by Centre is gradually increased to both ends.
The opposite two sides of branch electrodes 510 are two opposite camber lines, and the convex section of two camber lines is oppositely arranged to make The width of branch electrodes 511 is gradually increased from centre to both ends, the of the first ends 511 of branch electrodes 510 and branch electrodes The width at two ends 512 may be the same or different, and the width of first end 511 and the width of second end 512 are all larger than branch's electricity The width of the middle part 513 of pole 510.In this application, two arc curvatures of a curve are not identical, in other embodiments, two arcs Curvature of a curve can also be identical.
The shape of branch electrodes of above-mentioned first embodiment to fourth embodiment is all different, the shape of the application branch electrodes Shape is not limited to the above embodiments, the width at the both ends of branch electrodes and of different size among branch electrodes, such as branch The shape of electrode may be diamond shape or arc etc., and the application does not limit specifically.
The application also provides a kind of thin-film transistor array base-plate, and thin-film transistor array base-plate includes above-mentioned pixel electricity Pole.
Further, above-mentioned thin-film transistor array base-plate further include: a substrate, in the first metal formed on substrate Layer;Cover the first insulating layer of the first metal layer;In the active layer formed on the first insulating layer;In second formed on active layer Metal layer;Cover second metal layer and the second insulating layer with via hole;Pixel electrode is in formation in second insulating layer and fills Via hole with the drain electrode of second metal layer to contact.
In this application, substrate is glass substrate or flexible base board;The first metal layer includes grid and grid cabling;The Two metal layers include source electrode and drain electrode;First insulating layer and second insulating layer play the role of insulation.
The further object of the application is to provide a kind of display panel, and display panel includes above-mentioned thin film transistor (TFT) array base Plate.
The technical solution and its core concept for the application that the above embodiments are only used to help understand;This field Those of ordinary skill is it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments or right Part of technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution The range of the technical solution of each embodiment of the application.

Claims (10)

1. a kind of pixel electrode, which is characterized in that the pixel electrode includes:
Stem portion, the stem portion include horizontal main electrode and vertical main electrode, the horizontal main electrode and described are hung down Straight main electrode is mutually perpendicular to and the pixel electrode is divided into four branch portion areas;
Branch portion, the branch portion packet of the branch part in four branch portion areas, in each branch portion area Branch electrodes a plurality of parallel and along preset direction arrangement are included, are provided with slit, the branch between the adjacent branch electrodes It is of different size among the width at electrode both ends and the branch electrodes.
2. pixel electrode according to claim 1, which is characterized in that the width at the branch electrodes both ends is less than described point Width among branch electrode.
3. pixel electrode according to claim 2, which is characterized in that the width of the branch electrodes from centre to both ends by It is decrescence small.
4. pixel electrode according to claim 1, which is characterized in that the width at the branch electrodes both ends is greater than described point Width among branch electrode.
5. pixel electrode according to claim 4, which is characterized in that the width of the branch electrodes from centre to both ends by It is cumulative big.
6. pixel electrode according to claim 1, which is characterized in that the branch electrodes include first end, second end with And the middle part between the first end and the second end, the width of the first end are greater than the width of the second end Degree, the width of the second end are greater than the width of the middle part.
7. pixel electrode according to claim 1-6, which is characterized in that the preset direction and the horizontal master Angle between dry electrode is 45 degree.
8. pixel electrode according to claim 1-6, which is characterized in that the material for preparing of the pixel electrode is One of tin indium oxide or indium zinc oxide.
9. a kind of thin-film transistor array base-plate, which is characterized in that the thin-film transistor array base-plate includes claim 1-8 Described in any item pixel electrodes.
10. a kind of display panel, which is characterized in that the display panel includes thin film transistor (TFT) array as claimed in claim 9 Substrate.
CN201811569938.XA 2018-12-21 2018-12-21 Pixel electrode, thin-film transistor array base-plate and display panel Pending CN109375435A (en)

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CN201811569938.XA CN109375435A (en) 2018-12-21 2018-12-21 Pixel electrode, thin-film transistor array base-plate and display panel
PCT/CN2019/071843 WO2020124718A1 (en) 2018-12-21 2019-01-16 Pixel electrode, thin film transistor array substrate and display panel

Applications Claiming Priority (1)

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CN110673405A (en) * 2019-09-04 2020-01-10 深圳市华星光电半导体显示技术有限公司 Pixel electrode structure and display device
CN114660865A (en) * 2022-03-24 2022-06-24 Tcl华星光电技术有限公司 Array substrate and display device

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KR101978312B1 (en) * 2011-05-02 2019-05-15 삼성디스플레이 주식회사 Liquid crystal device alignment layer and methods for manufacturing the same
KR101902984B1 (en) * 2010-04-02 2018-11-14 삼성디스플레이 주식회사 Pixel electrode panel, liquid crystal display panel assembly and methods for manufacturing the same
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CN102213872A (en) * 2010-04-02 2011-10-12 三星电子株式会社 Pixel electrode panel, a liquid crystal display panel assembly and methods for manufacturing the same
US9772522B2 (en) * 2015-01-06 2017-09-26 Samsung Display Co., Ltd. Curved display device

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Publication number Priority date Publication date Assignee Title
CN110673405A (en) * 2019-09-04 2020-01-10 深圳市华星光电半导体显示技术有限公司 Pixel electrode structure and display device
WO2021042471A1 (en) * 2019-09-04 2021-03-11 深圳市华星光电半导体显示技术有限公司 Pixel electrode structure and display device
CN114660865A (en) * 2022-03-24 2022-06-24 Tcl华星光电技术有限公司 Array substrate and display device

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Application publication date: 20190222