WO2018120509A1 - 画素结构及其应用的显示面板 - Google Patents

画素结构及其应用的显示面板 Download PDF

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Publication number
WO2018120509A1
WO2018120509A1 PCT/CN2017/080554 CN2017080554W WO2018120509A1 WO 2018120509 A1 WO2018120509 A1 WO 2018120509A1 CN 2017080554 W CN2017080554 W CN 2017080554W WO 2018120509 A1 WO2018120509 A1 WO 2018120509A1
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Prior art keywords
pixel
pixel structure
liquid crystal
substrate
light transmissive
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PCT/CN2017/080554
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English (en)
French (fr)
Inventor
陈猷仁
Original Assignee
惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Priority to US15/735,341 priority Critical patent/US20190011784A1/en
Publication of WO2018120509A1 publication Critical patent/WO2018120509A1/zh

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02F1/133371—Cells with varying thickness of the liquid crystal layer
    • 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
    • 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
    • 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
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • 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
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
    • 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
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/30—Gray scale

Definitions

  • the present application relates to a design method, and more particularly to a display panel having a pixel structure and its application.
  • the liquid crystal display panel usually comprises a color filter substrate (CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer, LC Layer) disposed between the two substrates.
  • CF color filter substrate
  • TFT Array Substrate Thin Film Transistor Array Substrate
  • LC Layer Liquid Crystal Layer
  • the working principle is that the rotation of the liquid crystal molecules of the liquid crystal layer is controlled by applying a driving voltage on the two glass substrates, and the light of the backlight module is refracted to generate a picture.
  • liquid crystal display panels on the mainstream market can be classified into the following types: Vertical Alignment (VA) type, Twisted Nematic (TN) or Super Twisted (Super Twisted). Nematic, STN) type, In-Plane Switching (IPS) type and Fringe Field Switching (FFS) type.
  • VA Vertical Alignment
  • TN Twisted Nematic
  • the vertical alignment type (VA) mode liquid crystal display such as a Pattern Vertical Alignment (PVA) liquid crystal display or a Multi-domain Vertical Alignment (MVA) liquid crystal display device, wherein
  • PVA Pattern Vertical Alignment
  • MVA Multi-domain Vertical Alignment
  • the MVA type divides a single pixel into a plurality of regions, and uses a protrusion or a specific pattern structure to tilt liquid crystal molecules located in different regions toward different directions to achieve a wide viewing angle and enhance the transmittance.
  • liquid crystal molecules are driven in a direction parallel to the plane of the substrate by applying an electric field containing a component substantially parallel to the substrate.
  • the IPS type liquid crystal display panel and the FFS type liquid crystal display panel have the advantages of wide viewing angle.
  • the phase difference (Retardation) required to achieve the same transmittance (Transmittance) is smaller than that of red and green light, and the transmittance of red, green and blue light-voltage (VT) curves are different; moreover, red, green, and blue light have different transmittances in the polyimide (PI) film, flattening layer (PFA), coating layer (OC), etc. in the panel. Can cause color shift problems.
  • the optical performance can be mixed by two VT characteristics.
  • the proportion of bright and dark areas can be appropriately adjusted, and the gray scale can be effectively suppressed at large viewing angles.
  • White question At present, most of the MVA mode uses the distinction between pixels and bright areas. Therefore, the optical performance can be mixed by two VT characteristics. In addition, the proportion of bright and dark areas can be appropriately adjusted, and the gray scale can be effectively suppressed at large viewing angles. White question.
  • the purpose of the present application is to provide a design method, and particularly to a display panel having a pixel structure and an application thereof, which can effectively solve the color shift problem and effectively improve the aperture ratio of the pixel design.
  • a pixel structure according to the present application includes: a plurality of pixel units, wherein the pixel unit includes at least one light transmissive region according to different optical path differences and a specific area ratio The pixel light transmissive area is distinguished, and the pixel structure shape is circular, elliptical or spiral.
  • a liquid crystal display panel comprising: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; The pixel structure is disposed between the first substrate and the second substrate. And further comprising a first polarizer disposed on an outer surface of the first substrate; and a second polarizer disposed on an outer surface of the second substrate, wherein the first polarizer and the second The polarization directions of the polarizers are parallel to each other.
  • the pixel unit can equally divide the pixel unit into at least three regions by using different phase difference factors.
  • the pixel unit can distinguish pixels into at least three regions by using different gradient topographic factors of a protective layer.
  • the protective layer etching process is changed by a half-tone process.
  • the first light transmission region is composed of four main light transmission regions
  • the second light transmission region is composed of four times of light transmission regions
  • the third light transmission region is composed of It consists of four secondary light-transmissive areas.
  • the pixel region is divided into three different gradient topographic depths, and the pixel structure is divided into inner layers according to the three different gradient topographic depths, and the middle layer and the outer layer are all circular, and A pixel electrode is placed over it and the slit design is retained.
  • the pixel structure is arranged in a stripe arrangement or a delta shape arrangement.
  • a thin film transistor is further included to drive the entire pixel.
  • the application of the arc-shaped pixel electrode design can improve the contrast of large viewing angles, and can effectively solve the problem of large-view character bias of the liquid crystal display panel.
  • 1a is a transmittance-grayscale value curve corresponding to a color shift angle of a vertical alignment type liquid crystal display device according to an embodiment of the present invention in a case of a 0 degree angle of view, a 45 degree angle of view, and a 60 degree angle of view.
  • FIG. 1b is a brightness-gray scale curve corresponding to two improved color shift angles according to an embodiment of the present application.
  • 2 is a hybrid low color shift region model of an embodiment of the present application.
  • FIG 3 is a schematic view of a liquid crystal display panel according to an embodiment of the present application.
  • FIG. 3a is a schematic diagram of a circular electrode pixel region of a pixel structure according to an embodiment of the present application.
  • Fig. 3b is an optical path difference of three liquid crystal layers of a pixel structure according to an embodiment of the present application.
  • 4a is a diagram illustrating three GAMMA curves using a transmittance-voltage curve in accordance with an embodiment of the present application.
  • FIG. 4b is an embodiment of the present application for explaining three kinds of GAMMA curves by using the transmittance-gray scale value.
  • FIG. 5 is a schematic diagram of a pixel structure having a gradient topography fabricated by a Half Tone process according to an embodiment of the present application.
  • FIG. 6a is a schematic view showing the shape of an electrode pixel according to an embodiment of the present application.
  • FIG. 6b is a schematic diagram of a pixel structure arrangement according to an embodiment of the present application.
  • the word “comprising” is to be understood to include the component, but does not exclude any other component.
  • “on” means located above or below the target component, and does not mean that it must be on the top based on the direction of gravity.
  • the liquid crystal display device of the present application may include a backlight module and a liquid crystal display panel.
  • the liquid crystal display panel may include a thin film transistor (TFT) substrate, a color filter (CF) substrate, and a liquid crystal layer formed between the two substrates.
  • TFT thin film transistor
  • CF color filter
  • the liquid crystal display panel of the present application may be a curved display panel, and the liquid crystal display device of the present application may also be a curved display device.
  • the thin film transistor (TFT) or other active switch and color filter (CF) of the present application may be formed on the same substrate.
  • 1a is a transmittance-grayscale value curve corresponding to a color shift angle of a vertical alignment type liquid crystal display device in a case of a 0 degree angle of view, a 45 degree angle of view, and a 60 degree angle of view.
  • the transmittance-gray scale value curve 110 corresponding to the 0 degree color shift angle of view
  • the transmittance-gray scale value curve 120 corresponding to the 45 degree color shift angle of view
  • the 60 degree color shift angle view Corresponding penetration-grayscale value curve 130. Therefore, as the angle of view of the color shift is higher, the brightness transmittance is higher in the same gray scale value.
  • Figure 1b shows the brightness-grayscale curve corresponding to the two improved color shift angles. Please refer to FIG. 1b, in an embodiment of the present application.
  • the pixels are divided into bright and dark areas. Therefore, the optical performance can be mixed by two kinds of VT characteristics. In addition, the proportion of bright and dark areas is appropriately adjusted, so it can be effectively suppressed in a large viewing angle. Grayscale whitening problem.
  • the bright region gray scale 140 and the dark region pixel 150 they are mixed and adjusted into the pixels 160 in the luminance-gray scale pattern.
  • Figure 2 shows a mixed low color shift region model.
  • the main principle of the common Low Color Shift technology is to re-cut the conventional 4 region into 8 regions by using a partial pressure or an additional driving method. Therefore, there will be multi-domain compensation effects under a large viewing angle.
  • the sub-low color shift region 210 and the main low color shift region 220 are mixed into a low color shift region 200.
  • FIG. 3 is a schematic diagram of a liquid crystal display panel 30 according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a circular electrode pixel region of a pixel structure according to an embodiment of the present application. Referring to FIG. 3 and FIG.
  • the liquid crystal display panel 30 includes: a first substrate 301 (eg, a thin film transistor substrate); a second substrate 302 (eg, a color filter substrate), and The first substrate 301 is oppositely disposed; the liquid crystal layer 303 is disposed between the first substrate 301 and the second substrate 302; and further includes the pixel structure disposed on the first substrate and the first Between the two substrates (for example, on the surface of the first substrate), and including: a plurality of pixel units 300, the pixel unit 300 is composed of a first light transmissive area (310, 360), and a second light transmissive area (320, 350) and a third light transmissive area (330, 340), which is composed of three regions, which are separated according to different depths and according to a specific area ratio, and are disposed on the first substrate 301 and the second Between the substrates 302.
  • a first light transmissive area 310, 360
  • a second light transmissive area 320, 350
  • a third light transmissive area 330
  • first polarizer 306 disposed on an outer surface of the first substrate 301; and a second polarizer 307 disposed on an outer surface of the second substrate 302, wherein the first polarizer 306
  • the polarization directions with the second polarizer 307 are parallel to each other.
  • the display device of the present application includes a backlight module, and further includes a liquid crystal display panel 30 including: a first substrate 301 (eg, a thin film transistor substrate); and a second substrate 302 (eg, a color filter) a substrate) disposed opposite to the first substrate 301; a liquid crystal layer 303 disposed between the first substrate 301 and the second substrate 302; and further comprising the pixel structure disposed on the first substrate
  • the second substrate for example, located on a surface of the first substrate, and includes: a plurality of pixel units 300, the pixel unit 300 is configured by a first light transmissive area (310, 360), and the second light is transmitted.
  • the pixel structure includes the pixel unit 300, and the pixel unit 300 includes a first light transmissive area (310, 360) and a second light transmissive area (320, 350) and a third light transmissive region (330, 340), and the three regions are formed according to different depths and different regions according to a specific area ratio.
  • FIG. 3b is an optical path difference of three liquid crystal layers of a pixel structure according to an embodiment of the present application.
  • the first pixel transmissive area unit 300 utilizes different gradient topography factors by optical path difference ⁇ nd (three 370, 380, 390 optical path differences).
  • the pixel equivalent is divided into at least 3 regions.
  • FIG. 4a illustrates three GAMMA curves using a transmittance-voltage curve in accordance with an embodiment of the present application.
  • the transmittance-voltage value curve 410 corresponding to the 3.6 liquid crystal layer gap (Cell Gap) liquid crystal layer gap
  • the transmittance-voltage value curve 420 corresponding to the liquid crystal layer gap (Cell Gap)
  • the transmittance-voltage value curve 430 corresponding to the 4.2 cell gap (Cell Gap).
  • Figure 4b illustrates three GAMMA curves using the transmittance-grayscale values for an embodiment of the present application.
  • the transmittance-gray value curve 410 corresponding to the 3.6 liquid crystal layer gap (Cell Gap)
  • the transmittance-gray scale value curve 420 corresponding to the 3.9 liquid crystal layer gap (Cell Gap)
  • 4.2 Liquid crystal layer gap (Cell Gap) corresponding to the transmittance - gray scale value curve 430.
  • FIG. 5 is a schematic diagram of a pixel structure having a gradient topography produced by a Half Tone process in the present application.
  • the protective layer etching process is changed by a half-tone process.
  • the use of different gradient topography in the liquid crystal cell causes the pixel to distinguish effects, thus replacing the traditional method of using voltage division.
  • the first substrate has a four-layer structure including a transparent substrate (SB) layer 510, a passivation layer 520, a photoresist material (PR) layer 530, and an indium tin oxide (ITO) layer 550.
  • SB transparent substrate
  • PR photoresist material
  • ITO indium tin oxide
  • the film forming step is to deposit a film of a desired material (protective layer 520, photoresist layer 530, indium tin oxide layer 550) on the glass substrate 510; the exposing step is to use the photomask 540 in the light.
  • the desired photoresist 530 pattern is developed; the developing step is to leave the photoresist 530 of the pattern portion of the upper stage photoresist 530; the etching step is on the substrate 510 having the photoresist 530 pattern.
  • the desired pattern is etched; the stripping step removes the photoresist 530 overlying the pattern with the substrate 510 that has etched the desired pattern for subsequent processing.
  • FIG. 6a is a schematic view showing the shape of an electrode pixel according to an embodiment of the present application.
  • the pixel structure shape is a circle 610 and a spiral 620 or other patterns.
  • FIG. 6b is a schematic diagram of a pixel structure arrangement according to an embodiment of the present application.
  • the pixel structure is arranged in a stripe shape 630 arrangement and a delta shape 640 arrangement or other shape arrangement.
  • the pixels of the display device further include an active switch, such as a thin film transistor, for driving the entire pixel.
  • an active switch such as a thin film transistor
  • the circular arc pixel structure may be circular or elliptical.
  • the application of the arc-shaped pixel electrode design can improve the contrast of large viewing angles, and can effectively solve the problem of large-view character bias of the liquid crystal display panel.

Abstract

一种画素结构及其应用的显示面板（30），此画素结构包括：多个画素单元（300），此画素单元（300）包括至少一透光区（310,360），其依据不同光程差并依特定面积比例区分画素透光区，且此画素结构形状为圆形、椭圆形及螺旋状。

Description

画素结构及其应用的显示面板 技术领域
本申请涉及一种设计方法，特别是涉及一种画素结构及其应用的显示面板。
背景技术
液晶显示面板通常是由一彩膜基板(Color Filter，CF)、一薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)以及一配置于两基板间的液晶层(Liquid Crystal Layer，LC Layer)所构成，其工作原理是通过在两片玻璃基板上施加驱动电压来控制液晶层的液晶分子的旋转，将背光模组的光线折射出来产生画面。按照液晶的取向方式不同，目前主流市场上的液晶显示面板可以分为以下几种类型：垂直配向(Vertical Alignment，VA)型、扭曲向列(Twisted Nematic，TN)或超扭曲向列(Super Twisted Nematic，STN)型、平面转换(In-Plane Switching，IPS)型及边缘场开关(Fringe Field Switching，FFS)型。
所述垂直配向型(Vertical Alignment，VA)模式的液晶显示器，例如图形垂直配向型(Patterned Vertical Alignment，PVA)液晶显示器或多区域垂直配向型(Multi-domain Vertical Alignment，MVA)液晶显示设备，其中PVA型利用边缘场效应与补偿板达到广视角的效果。MVA型将一个画素分成多个区域，并使用突起物(Protrusion)或特定图案结构，使位于不同区域的液晶分子朝向不同方向倾倒，以达到广视角且提升穿透率的作用。
在IPS模式或FFS模式中，通过施加含有基本平行于基板的分量的电场，使液晶分子在平行于基板平面的方向相应而驱动液晶分子。IPS型液晶显示面板和FFS型液晶显示面板，二者具有广视角的优点。但由于蓝光的波长较短，与红光和绿光相比，达到相同穿透率(Transmittance)所需的相位差(Retardation)较小，红光、绿光和蓝光的穿透率-电压(V-T)曲线不同；而且，红光、绿光和蓝光在面板中的聚酰亚胺(PI)膜、平坦化层(PFA)、涂覆层(OC)等膜面的穿透率不同，也会导致出现色偏问题。
MVA模式目前主流多是采用将画素区分为亮区与暗区，因此光学表现上可以由两种V-T特性混合，另外在适当调整亮暗区面积比例，在大视角时可有效压制中灰阶泛白的问题。
发明内容
为了解决上述技术问题，本申请的目的在于，提供一种设计方法，特别是涉及一种画素结构及其应用的显示面板，不仅可以有效解决色偏问题，同时可有效提升画素设计开口率。
本申请的目的及解决其技术问题是采用以下技术方案来实现的。依据本申请提出的一种画素结构，包括：多个画素单元，所述画素单元包括至少一透光区，其依据不同光程差并依特定面积比例 区分画素透光区，且所述画素结构形状为圆形、椭圆形或螺旋状。
本申请的目的及解决其技术问题还可采用以下技术措施进一步实现。
一种液晶显示面板，包括：第一基板；第二基板，与所述第一基板相对设置；液晶层，设置于所述第一基板与所述第二基板之间；且还包括所述的画素结构，设置于所述第一基板与所述第二基板之间。且更包括第一偏光片设置于所述第一基板的一外表面上；以及第二偏光片设置于所述第二基板的一外表面上，其中所述第一偏光片与所述第二偏光片的偏振方向为互相平行。
在本申请的一实施例中，所述画素单元，利用不同相位差因素，可将画素单元等效区分为至少3区域。
在本申请的一实施例中，所述画素单元，利用一保护层不同梯度地形因素，可将画素等效区分为至少3区域。
在本申请的一实施例中，通过一半调式工艺过程改变所述保护层蚀刻工艺。
在本申请的一实施例中，更包括一第一透光区由四个主透光区域所组成，一第二透光区由四个次透光区域所组成及一第三透光区由四个次二透光区域所组成。
在本申请的一实施例中，所述画素区域分为3种不同梯度地形深度，其依所述3种不同梯度地形深度将画素结构分为内层，中层及外层都为圆形，并将画素电极覆盖其上且保留狭缝设计。
在本申请的一实施例中，所述画素结构排列方式为条纹形排列或三角洲形状排列。
在本申请的一实施例中，更包括一薄膜晶体管，用以驱动整个画素。
有益效果
本申请通过圆弧形画素电极设计，可改善大视角对比，且可有效解决液晶显示面板大视角色偏问题。
附图说明
图1a是本申请一实施例的垂直配向型液晶显示设备在0度视角、45度视角及60度视角的情形下，色偏角度所对应的穿透率-灰阶值曲线。
图1b是本申请一实施例的混合两种改善色偏角度所对应的亮度-灰阶曲线。
图2是本申请一实施例的混合低色偏区域模型。
图3是本申请一实施例的液晶显示面板示意图。
图3a是本申请一实施例的画素结构的圆形电极画素区域示意图。
图3b是本申请一实施例的画素结构的3种液晶层的光程差。
图4a是本申请一实施例利用穿透率-电压曲线解释3种GAMMA曲线。
图4b是本申请一实施例利用穿透率-灰阶值解释3种GAMMA曲线。
图5是本申请一实施例的通过半调式(Half Tone)工艺过程制造具有梯度形貌的画素结构示意图。
图6a是本申请一实施例的电极画素形状示意图。
图6b是本申请一实施例的画素结构排列方式示意图。
本发明的实施方式
以下各实施例的说明是参考附加的图式，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。
附图和说明被认为在本质上是示出性的，而不是限制性的。在图中，结构相似的单元是以相同标号表示。另外，为了理解和便于描述，附图中示出的每个组件的尺寸和厚度是任意示出的，但是本申请不限于此。
在附图中，为了清晰起见，夸大了层、膜、面板、区域等的厚度。在附图中，为了理解和便于描述，夸大了一些层和区域的厚度。将理解的是，当例如层、膜、区域或基底的组件被称作“在”另一组件“上”时，所述组件可以直接在所述另一组件上，或者也可以存在中间组件。
另外，在说明书中，除非明确地描述为相反的，否则词语“包括”将被理解为意指包括所述组件，但是不排除任何其它组件。此外，在说明书中，“在......上”意指位于目标组件上方或者下方，而不意指必须位于基于重力方向的顶部上。
为更进一步阐述本申请为达成预定发明目的所采取的技术手段及功效，以下结合附图及较佳实施例，对依据本申请提出的一种画素结构及其应用的显示面板，其具体实施方式、结构、特征及其功效，详细说明如后。
本申请的液晶显示设备可包括背光模块及液晶显示面板。液晶显示面板可包括薄膜晶体管(Thin Film Transistor，TFT)基板、彩色滤光片(Color Filter，CF)基板与形成于两基板之间的液晶层。
在一实施例中，本申请的液晶显示面板可为曲面型显示面板，且本申请的液晶显示设备也可为曲面型显示设备。
在一实施例中，本申请的薄膜晶体管(TFT)或其他主动开关及彩色滤光片(CF)可形成于同一基板上。
图1a为垂直配向型液晶显示设备在0度视角、45度视角及60度视角的情形下，色偏角度所对应的穿透率-灰阶值曲线。请参照图1a，在0度色偏视角所对应的穿透率-灰阶值曲线110、在45度色偏视角所对应的穿透率-灰阶值曲线120及在60度色偏视角所对应的穿透率-灰阶值曲线130。因此随着色偏视角角度越高，在同一个灰阶值中，亮度穿透率就越高。
图1b为混合两种改善色偏角度所对应的亮度-灰阶曲线。请参照图1b，在本申请的一实施例 中，MVA模式目前主流多是采用将画素区分为亮区与暗区，因此光学表现上可以由两种V-T特性混合，另外在适当调整亮暗区面积比例，所以在大视角时可有效压制中灰阶泛白的问题。而在亮区画素140与暗区画素150，彼此在亮度-灰阶图式中混合调整成画素160。
图2为混合低色偏区域模型。请参照图2，在本申请的一实施例中，常见的低色偏(Low Color Shift)技术主要原理是将传统4区域利用分压或额外驱动方式再切割为8区域。因此在大视角观看下会有多范畴补偿的效果。如子低色偏区域210及主低色偏区域220相混合成低色偏区域200。
图3为本申请一实施例的液晶显示面板30示意图及图3a为本申请一实施例的画素结构的圆形电极画素区域示意图。请参照图3及图3a，在本申请的一实施例中，所述液晶显示面板30包括：第一基板301(例如薄膜晶体管基板)；第二基板302(例如彩色滤光片基板)，与所述第一基板301相对设置；液晶层303，设置于所述第一基板301与所述第二基板302之间；且还包括所述画素结构，设置于所述第一基板与所述第二基板之间(例如位于所述第一基板的表面)，并包括：多个画素单元300，所述画素单元300由第一透光区(310，360)，第二透光区(320，350)及第三透光区(330，340)，三个区域所组成，其依据不同深度并依特定面积比例区分画素透光区效果，并设置于所述第一基板301与所述第二基板302之间。且更包括第一偏光片306设置于所述第一基板301的一外表面上；以及第二偏光片307设置于所述第二基板302的一外表面上，其中所述第一偏光片306与所述第二偏光片307的偏振方向为互相平行。
在本申请一实施例中，本申请的显示装置，包括背光模块，还包括一种液晶显示面板30，包括：第一基板301(例如薄膜晶体管基板)；第二基板302(例如彩色滤光片基板)，与所述第一基板301相对设置；液晶层303，设置于所述第一基板301与所述第二基板302之间；且还包括所述画素结构，设置于所述第一基板与所述第二基板之间(例如位于所述第一基板的表面)，并包括：多个画素单元300，所述画素单元300由第一透光区(310，360)，第二透光区(320，350)及第三透光区(330，340)，三个区域所组成，其依据不同深度并依特定面积比例区分画素透光区效果，而设置于所述第一基板301与所述第二基板302之间。且更包括第一偏光片306设置于所述第一基板301的一外表面上；以及第二偏光片307设置于所述第二基板302的一外表面上，其中所述第一偏光片306与所述第二偏光片307的偏振方向为互相平行。
请参照图3a，在本申请的一实施例中，所述画素结构包括所述画素单元300，所述画素单元300由第一透光区(310，360)，第二透光区(320，350)及第三透光区(330，340)，而所述三个区域所组成依据，是根据不同深度并依特定面积比例区分画素透光区效果。
图3b为本申请一实施例的画素结构的3种液晶层的光程差。在本申请的一实施例中，所述第一画素透光区单元300，利用光程差△nd(由三个370，380，390光程差)不同梯度地形因素，可将 画素等效区分为至少3区域。
图4a为本申请一实施例利用穿透率-电压曲线解释3种GAMMA曲线。请参照图4a，在3.6液晶层间隙(Cell Gap)液晶层间隙所对应的穿透率-电压值曲线410，在3.9液晶层间隙(Cell Gap)所对应的穿透率-电压值曲线420及在4.2液晶层间隙(Cell Gap)所对应的穿透率-电压值曲线430。
图4b为本申请一实施例利用穿透率-灰阶值解释3种GAMMA曲线。请参照图4a，在3.6液晶层间隙(Cell Gap)所对应的穿透率-灰阶值曲线410，在3.9液晶层间隙(Cell Gap)所对应的穿透率-灰阶值曲线420及在4.2液晶层间隙(Cell Gap)所对应的穿透率-灰阶值曲线430。
图5为本申请通过半调式(Half Tone)工艺过程制造具有梯度形貌的画素结构示意图。请参照图5，在本申请的一实施例中，通过一半调式工艺过程改变所述保护层蚀刻工艺。且利用液晶盒内不同梯度地形造成画素区分效果，因而取代传统使用电压分压的方式。例如第一基板具有四层结构，包括：透明基板(SB)层510、保护(Passivation)层520、光阻材料(PR)层530及氧化铟锡(ITO)层550所组成。且需经过成膜步骤、曝光步骤、显影步骤、蚀刻步骤及剥膜步骤，此流程需重复5次，才能完成基板。所述成膜步骤是在玻璃基板510上，铺上一层所需求材质的薄膜(保护层520、光阻材料层530、氧化铟锡层550)；所述曝光步骤是使用光罩540在光阻530上，显影出所需的光阻530图形；所述显影步骤是留下上阶段光阻530图形部分的光阻530；所述蚀刻步骤是在已经有光阻530图形的基板510上，蚀刻出所需的图；所述剥膜步骤用已经蚀刻出所需图形的基板510，将覆盖于图形上的光阻530去除以便进行后续工程。
图6a为本申请一实施例的电极画素形状示意图。请参照图6a，在本申请的一实施例中，所述画素结构形状为圆形610及螺旋状620或其他图形。
图6b为本申请一实施例的画素结构排列方式示意图。请参照图6b，在本申请的一实施例中，所述画素结构排列方式为条纹形630排列及三角洲形状640排列或其他形状排列。
在本申请的一实施例中，所述显示设备的画素更包括主动开关，例如薄膜晶体管，用以驱动整个画素。
在本申请的一实施例中，圆弧形画素结构可呈圆形或椭圆形。
本申请通过圆弧形画素电极设计，可改善大视角对比，且可有效解决液晶显示面板大视角色偏问题。
“在一些实施例中”及“在各种实施例中”等用语被重复地使用。所述用语通常不是指相同的实施例；但它也可以是指相同的实施例。“包含”、“具有”及“包括”等用词是同义词，除非其前后文意显示出其它意思。
以上所述，仅是本申请的较佳实施例而已，并非对本申请作任何形式上的限制，虽然本申请已 以较佳实施例揭露如上，然而并非用以限定本申请，任何熟悉本专业的技术人员，在不脱离本申请技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本申请技术方案的内容，依据本申请的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本申请技术方案的范围内。

Claims (18)

  1. 一种画素结构，包括：
    多个画素单元，所述画素单元包括至少一透光区，其依据不同光程差并依特定面积比例区分画素透光区，且所述画素结构形状为圆形、椭圆形或螺旋状。
  2. 如权利要求1所述的画素结构，其中所述画素单元，利用不同相位差因素，可将画素单元等效区分为至少3区域。
  3. 如权利要求1所述的画素结构，其中所述画素单元，利用一保护层的不同梯度地形因素，可将画素单元等效区分为至少3区域。
  4. 如权利要求1所述的画素结构，通过一半调式工艺过程改变所述保护层蚀刻工艺。
  5. 如权利要求1所述的画素结构，更包括一第一透光区由四个主透光区域所组成，一第二透光区由四个次透光区域所组成及一第三透光区由四个次二透光区域所组成。
  6. 如权利要求3所述的画素结构，其中所述画素单元分为3种不同梯度地形深度，其依所述3种不同梯度地形深度将画素结构分为内层，中层及外层都为圆形，并将画素电极覆盖其上且保留狭缝设计。
  7. 如权利要求1所述的画素结构，其中所述画素结构排列方式为条纹形排列或三角洲形状排列。
  8. 如权利要求1所述的画素结构，更包括一薄膜晶体管，用以驱动整个画素。
  9. 一种液晶显示面板，包括：
    第一基板；
    第二基板，与所述第一基板相对设置；
    液晶层，设置于所述第一基板与所述第二基板之间；
    第一偏光片设置于所述第一基板的一外表面上；以及第二偏光片设置于所述第二基板的一外表面上，其中所述第一偏光片与所述第二偏光片的偏振方向为互相平行；
    画素结构，设置于所述第一基板与所述第二基板之间，所述画素结构包括：多个画素单元，所述画素单元包括至少一透光区，其依据不同光程差并依特定面积比例区分画素透光区，且所述画素结构形状为圆形、椭圆形及螺旋状。
  10. 如权利要求9所述的液晶显示面板，其中所述画素单元，利用不同相位差因素，可将画素单元等效区分为至少3区域。
  11. 如权利要求9所述的液晶显示面板，其中所述画素单元，利用一保护层的不同梯度地形因素，可将画素单元等效区分为至少3区域。
  12. 如权利要求9所述的液晶显示面板，通过一半调式工艺过程改变所述保护层蚀刻工艺。
  13. 如权利要求9所述的液晶显示面板，更包括一第一透光区由四个主透光区域所组成，一第二透光区由四个次透光区域所组成及一第三透光区由四个次二透光区域所组成。
  14. 如权利要求9所述的液晶显示面板，其中所述画素单元分为3种不同梯度地形深度，其依所述3种不同梯度地形深度将画素结构分为内层，中层及外层都为圆形，并将画素电极覆盖其上且保留狭缝设计。
  15. 如权利要求9所述的液晶显示面板，其中所述画素结构排列方式为条纹形排列。
  16. 如权利要求9所述的液晶显示面板，其中所述画素结构排列方式为三角洲形状排列。
  17. 如权利要求9所述的液晶显示面板，更包括一薄膜晶体管，用以驱动整个画素。
  18. 一种画素结构，包括：
    多个画素单元，所述画素单元包括至少一透光区，其依据不同光程差并依特定面积比例区分画素透光区，且所述画素结构形状为圆形、椭圆形或螺旋状；
    所述画素单元，利用不同相位差因素，可将画素单元等效区分为至少3区域；
    所述画素单元，利用一保护层的不同梯度地形因素，可将画素单元等效区分为至少3区域；
    所述画素单元分为3种不同梯度地形深度，其依所述3种不同梯度地形深度将画素结构分为内层，中层及外层都为圆形，并将画素电极覆盖其上且保留狭缝设计；
    所述画素结构排列方式为条纹形排列或三角洲形状排列。
PCT/CN2017/080554 2016-12-30 2017-04-14 画素结构及其应用的显示面板 WO2018120509A1 (zh)

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CN106873216A (zh) * 2016-12-30 2017-06-20 惠科股份有限公司 显示面板及其应用的液晶显示面板
CN107357070B (zh) * 2017-07-31 2020-05-15 厦门天马微电子有限公司 显示面板和显示装置
CN109932835A (zh) * 2019-04-23 2019-06-25 南京奥谱依电子科技有限公司 一种具有高光能利用率的电控液晶聚光微镜及其制备方法
CN111983856A (zh) * 2020-08-10 2020-11-24 深圳市华星光电半导体显示技术有限公司 液晶显示面板和液晶显示装置
WO2022160282A1 (zh) 2021-01-29 2022-08-04 京东方科技集团股份有限公司 阵列基板和液晶显示面板
CN114879392B (zh) * 2022-04-13 2023-10-24 滁州惠科光电科技有限公司 显示面板及电子设备

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