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WO2014067198A1 - 液晶显示面板及其应用的显示装置 - Google Patents

液晶显示面板及其应用的显示装置 Download PDF

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Publication number
WO2014067198A1
WO2014067198A1 PCT/CN2012/085196 CN2012085196W WO2014067198A1 WO 2014067198 A1 WO2014067198 A1 WO 2014067198A1 CN 2012085196 W CN2012085196 W CN 2012085196W WO 2014067198 A1 WO2014067198 A1 WO 2014067198A1
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WO
WIPO (PCT)
Prior art keywords
voltage
sub
liquid crystal
pixel
pixel region
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Ceased
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PCT/CN2012/085196
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English (en)
French (fr)
Inventor
陈胤宏
田夏
贾沛
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US13/703,386 priority Critical patent/US9147371B2/en
Publication of WO2014067198A1 publication Critical patent/WO2014067198A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • 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
    • G02F1/134336—Matrix
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal display panel and a display device thereof.
  • Liquid crystal display (Liquid Crystal Display, LCD) has been widely used in a variety of electronic products, most of the liquid crystal display is a backlight type liquid crystal display, which is composed of a liquid crystal display panel and a backlight module (backlight Module).
  • the liquid crystal display panel is composed of two transparent substrates and a liquid crystal sealed between the substrates, and the liquid crystal display panel has a plurality of pixels for displaying images.
  • VA Vertical Alignment
  • the invention provides a liquid crystal display panel and a display device thereof for solving the problem of viewing angle of pixels existing in the existing liquid crystal display.
  • a main object of the present invention is to provide a liquid crystal display panel for use in a normally black mode, the liquid crystal display panel comprising:
  • the second substrate includes a plurality of pixels, wherein each of the pixels includes a first sub-pixel region and a second sub-pixel region, and the first sub-pixel region includes a plurality of first branches, and the first branch Having a first gap therebetween, the second sub-pixel region includes a plurality of second branches, a second gap between the second branches, the first gap being smaller than the second gap;
  • a first voltage is applied to the first sub-pixel region
  • a second voltage is applied to the second sub-pixel region
  • the voltage difference is inversely proportional to a grayscale value of an image displayed by the pixel, and the first voltage is higher than the second voltage.
  • Another object of the present invention is to provide a display device including a backlight module and the above liquid crystal display panel.
  • the difference between the first gap and the second gap is greater than 1 micrometer.
  • the difference between the first gap and the second gap is between 1 micrometer and 3 micrometers.
  • the voltage difference between the first voltage and the second voltage is greater than 1 volt.
  • the voltage difference between the first voltage and the second voltage is between 1 volt and 3 volts. between.
  • an area of the second sub-pixel region is greater than or equal to an area of the first sub-pixel region.
  • the liquid crystal display panel of the present invention and the display device thereof can be driven by different gaps and different voltages of different sub-pixel regions in the pixel, thereby effectively expanding the brightness difference between different sub-pixel regions, thereby effectively reducing the viewing angle problem of the pixel. .
  • FIG. 1 is a partial cross-sectional view showing a liquid crystal display panel in accordance with an embodiment of the present invention
  • FIG. 2 shows a wiring diagram of a pixel of a liquid crystal display panel in accordance with an embodiment of the present invention
  • FIG. 3 shows a schematic diagram of a pixel of a liquid crystal display panel in accordance with an embodiment of the present invention
  • FIG. 4 is a diagram showing the relationship between the line width/gap of the branches of the liquid crystal display panel and the liquid crystal efficiency according to an embodiment of the present invention.
  • 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 display device of this embodiment may include a liquid crystal display panel 100 and a backlight module (not shown).
  • the liquid crystal display panel 100 is disposed relative to the backlight module, and the backlight module can be side-lit (side A backlight module or a Bottom Lighting backlight module is provided to provide backlighting to the liquid crystal display panel 100.
  • the liquid crystal display panel 100 may include a first substrate 110 , a second substrate 120 , a liquid crystal layer 130 , a first polarizer 140 , and a second polarizer 150 .
  • the liquid crystal layer 130 is formed between the first substrate 110 and the second substrate 120, that is, the liquid crystal layer 130 is located inside the first substrate 110 and the second substrate 120.
  • the first polarizer 140 is disposed outside the first substrate 110
  • the second polarizer 150 is disposed outside the second substrate 120 .
  • the substrate material of the first substrate 110 and the second substrate 120 may be a glass substrate or a flexible plastic substrate, and the first substrate 110 may be, for example, a color filter (Color). a glass substrate of Filter, CF) or a substrate of other materials, and the second substrate 120 may be, for example, a Thin Film Transistor (TFT). A glass substrate of a matrix or a substrate of another material. It should be noted that in some embodiments, the color filter and the TFT matrix may also be disposed on the same substrate.
  • the first substrate 110 may include a first electrode layer 111
  • the second substrate 120 may include a second electrode layer 121 .
  • the first electrode layer 111 and the second electrode layer 121 are preferably made of a light-transmitting conductive material such as ITO, IZO, AZO, GZO, TCO or ZnO, and the first electrode 111 and the second electrode 121 can apply a voltage to the liquid crystal. Liquid crystal molecules of layer 130.
  • the first electrode 111 is, for example, a common electrode
  • the second electrode 121 is, for example, a pixel electrode.
  • the second substrate 120 includes a plurality of signal lines 122, a plurality of active components 123, and a plurality of pixels 124.
  • the signal lines 122 are, for example, gate lines and data lines, and are vertically interlaced with each other, thereby forming pixels 124 arranged in a matrix.
  • the active component 123 is, for example, a thin film transistor (Thin Film Transistors (TFTs) are respectively disposed in the pixels 124 and electrically connected to the signal electrodes 122 and the pixel electrodes of the pixels 124.
  • TFTs Thin Film Transistors
  • Each pixel 124 may correspond to a color filter, such as a red, green or blue filter.
  • FIG. 3 is a schematic diagram of a pixel of a liquid crystal display panel according to an embodiment of the invention.
  • Each of the pixels 124 includes a first sub-pixel region 101 and a second sub-pixel region 102, wherein the area of the second sub-pixel region 102 can be greater than or equal to the area of the first sub-pixel region 101.
  • the pixel electrode structure of each of the first sub-pixel regions 101 includes a first stem 103 and a plurality of first branches 104.
  • the pixel electrode structure of each of the second sub-pixel regions 102 includes a second stem 105 and a plurality of second branches 106.
  • the first trunk 103 and the second trunk 105 may have a cross-shaped pattern.
  • the branches 104 and 106 are obliquely extended by the trunk portions 103 and 105, respectively, and are arranged in parallel with each other.
  • the first branch 104 in the first sub-pixel region 101 has the same first line width L1 and the first space S1
  • the second branch 106 in the second sub-pixel region 102 has the same second line width L2.
  • the second gap S2 and the first gap S1 in the first sub-pixel region 101 is smaller than the second gap S2 in the second sub-pixel region 102 (S1 ⁇ S2).
  • the line width is expressed as the width of the branch
  • the gap is expressed as the distance between the branches.
  • FIG. 4 is a diagram showing the relationship between the line width/gap of the branches of the liquid crystal display panel and the liquid crystal efficiency according to an embodiment of the present invention.
  • line A represents a branch having a line width of 1 micrometer (um) at different gaps and liquid crystal efficiency (LC).
  • Relationship between Efficiency, B means line width is 2
  • the relationship between the branch of um in different gaps and liquid crystal efficiency, and C indicates the relationship between the branches having a line width of 3 ⁇ m and different liquid crystal efficiencies. Therefore, as shown in FIG. 4, when the branch gap in the pixel electrode structure is increased, the liquid crystal efficiency is lowered.
  • the first voltage V1 is applied to the pixel electrode of the first sub-pixel region 101
  • the second voltage V2 is applied to the pixel electrode of the second sub-pixel region 102
  • the first voltage V1 is higher than the second voltage V2 (V1 > V2).
  • the voltage difference (V1-V2) between the first voltage V1 and the second voltage V2 is inversely proportional to the gray-scale of the image displayed by the pixel 124. Therefore, when the pixel 124 displays an image having a lower grayscale value (low luminance), the voltage difference (V1 - V2) between the first sub-pixel region 101 and the second sub-pixel region 102 is larger. On the contrary, when the pixel 124 displays an image having a higher grayscale value (high luminance), the voltage difference (V1 - V2) between the first sub-pixel region 101 and the second sub-pixel region 102 is small.
  • the viewing angle problem of this pixel means that the image displayed by the pixel is different when viewed from the front or squinted.
  • the liquid crystal efficiency of the first sub-pixel region 101 may be higher than that of the second The liquid crystal efficiency of the sub-pixel region 102, in other words, the image brightness displayed by the first sub-pixel region 101 can be higher than the image brightness displayed by the second sub-pixel region 102. Therefore, the difference in luminance between the first sub-pixel region 101 and the second sub-pixel region 102 can be further expanded by the electrode gaps of different sub-pixel regions in the pixel 124 to further reduce the viewing angle problem of the pixel.
  • the gap S1 or S2 between the first branch 104 or the second branch 106 may be less than 7 micrometers (um), for example, between 1 Between um and 7 um, and the difference (S1-S2) between the first gap S1 and the second gap S2 may be greater than 1 um, for example between 1 um and 3 um, to effectively reduce the viewing angle of the pixel problem.
  • the first sub-pixel area 101 and the first The voltage difference (V1-V2) between the two sub-pixel regions 102 may be greater than 1 volt (V), for example, between 1 Between V and 3 V to effectively reduce the viewing angle of the pixel.
  • the liquid crystal display panel of the present invention when the brightness (grayscale value) of the image displayed by the pixel is low, it is driven by different gaps and different voltages of different sub-pixel regions in the pixel.
  • the brightness difference between different sub-pixel regions can be effectively expanded to effectively reduce the viewing angle problem of the pixel.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

提供了一种液晶显示面板及其应用的显示装置。此液晶显示面板包括第一基板（110）、第二基板（120）及液晶层（130）。液晶层（130）是形成于第一基板（110）与第二基板（120）之间，第二基板（120）包括像素（124），其中每一像素（124）包括第一子像素区（101）及第二子像素区（102），当所述像素（124）显示影像时，第一子像素区（101）的第一电压与第二子像素区（102）的第二电压之间的电压差是反比于像素（124）所显示的影像的灰阶值，且第一电压是高于所述第二电压。该液晶显示面板可改善像素的视角问题。

Description

液晶显示面板及其应用的显示装置 技术领域
本发明涉及液晶显示技术领域，特别是涉及一种液晶显示面板及其应用的显示装置。
 背景技术
液晶显示器(Liquid Crystal Display，LCD)已被广泛应用于各种电子产品中，液晶显示器大部分为背光型液晶显示器，其是由液晶显示面板及背光模块(backlight module)所组成。液晶显示面板是由两片透明基板以及被封于基板之间的液晶所构成，液晶显示面板具有多个像素，用于显示影像。
目前，已发展一种垂直配向(Vertical Alignment, VA)技术，用于液晶显示面板，其可具有广视角、高开口率、高对比及制程简单等优点。
然而，在目前的VA型液晶显示器中，当正面观看或斜视显示器时，其所显示的影像效果不同，特别是在常黑(normally black)模式中，此视角问题更加严重，因而严重地影响液晶显示器的显示质量。
故，有必要提供一种液晶显示面板及其应用的显示装置，以解决现有技术所存在的问题。
 技术问题
本发明提供一种液晶显示面板及其应用的显示装置，以解决现有液晶显示器所存在的像素的视角问题。
 技术解决方案
本发明的主要目的在于提供一种液晶显示面板，用于常黑模式中，所述液晶显示面板包括：
第一基板；
第二基板，包括多个像素，其中每一所述像素包括一第一子像素区及一第二子像素区，所述第一子像素区包括多个第一分支，所述第一分支之间具有第一间隙，所述第二子像素区包括多个第二分支，所述第二分支之间具有第二间隙，所述第一间隙小于所述第二间隙；以及
液晶层，形成于所述第一基板与所述第二基板之间；
其中，当所述像素显示影像时，第一电压施加于所述第一子像素区，第二电压施加于所述第二子像素区，所述第一电压与所述第二电压之间的电压差是反比于所述像素所显示的影像的灰阶值，且所述第一电压是高于所述第二电压。
本发明的另一目的在于提供一种显示装置，所述显示装置包括背光模块及上述的液晶显示面板。
在本发明的一实施例中，所述第一间隙与所述第二间隙之间的差异大于1微米。
在本发明的一实施例中，所述第一间隙与所述第二间隙之间的差异介于1微米与3微米之间。
在本发明的一实施例中，当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是大于1伏特。
在本发明的一实施例中，当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是介于1伏特与3伏特之间。
在本发明的一实施例中，所述第二子像素区的面积大于或等于所述第一子像素区的面积。
 有益效果
本发明的液晶显示面板及其应用的显示装置可通过像素中不同子像素区的不同间隙及不同电压驱动，可有效地扩大不同子像素区之间的亮度差异，以有效地减少像素的视角问题。
 附图说明
图1显示依照本发明的一实施例的液晶显示面板的局部剖面示意图；
图2显示依照本发明的一实施例的液晶显示面板的像素的布线图；
图3显示依照本发明的一实施例的液晶显示面板的像素的示意图；以及
图4显示依照本发明的一实施例的液晶显示面板的像素的分支的线宽/间隙及液晶效率之间的关系示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，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发明，而非用以限制本发明。
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，但是本发明不限于此。
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。
请参照图1，其显示依照本发明的一实施例的液晶显示面板的局部剖面示意图。本实施例的显示装置可包括液晶显示面板100和背光模块(未绘示)。液晶显示面板100相对于背光模块来设置，此背光模块可为侧光式(side Lighting)背光模块或直下式入光(Bottom Lighting)背光模块，以提供背光至液晶显示面板100。
如图1所示，液晶显示面板100可包括第一基板110、第二基板120、液晶层130、第一偏光片140及第二偏光片150。液晶层130是形成于第一基板110及第二基板120之间，亦即液晶层130是位于第一基板110及第二基板120的内侧。第一偏光片140是设置于第一基板110的外侧，第二偏光片150是设置于第二基板120的外侧。
如图1所示，第一基板110和第二基板120的基板材料可为玻璃基板或可挠性塑料基板，第一基板110可例如为具有彩色滤光片(Color Filter，CF)的玻璃基板或其它材质的基板，而第二基板120可例如为具有薄膜晶体管(Thin Film Transistor，TFT) 矩阵的玻璃基板或其它材质的基板。值得注意的是，在一些实施例中，彩色滤光片和TFT矩阵亦可配置在同一基板上。
如图1所示，第一基板110可包括第一电极层111，第二基板120可包括第二电极层121。第一电极层111和第二电极层121优选是以透光导电材料所制成，例如：ITO、IZO、AZO、GZO、TCO或ZnO，第一电极111和第二电极121可施加电压于液晶层130的液晶分子。在本实施例中，第一电极111例如为共同电极，第二电极121例如为像素电极。
请参照图2，其显示依照本发明的一实施例的液晶显示面板的像素的布线图。第二基板120包括更多条信号线122、多个主动组件123及多个像素124。信号线122例如为栅极线及数据线，且相互垂直交错，因而形成矩阵式排列的像素124。主动组件123例如为薄膜晶体管(Thin Film Transistor，TFT)，分别设置于像素124中，并电性连接于信号线122及像素124的像素电极。每一像素124可对应于一种颜色的滤光片，例如红、绿或蓝色滤光片。
请参照图2及图3，图3显示依照本发明的一实施例的液晶显示面板的像素的示意图。每一像素124包括一第一子像素区101及一第二子像素区102，其中第二子像素区102的面积可大于或等于第一子像素区101的面积。每一第一子像素区101的像素电极结构包括第一主干103及多个第一分支104，每一第二子像素区102的像素电极结构包括第二主干105及多个第二分支106。第一主干103及第二主干105可呈十字形图案。分支104、106是分别由主干部103、105来倾斜地延伸出，并相互平行排列。其中，第一子像素区101中的第一分支104具有相同的第一线宽L1及第一间隙(Space)S1，第二子像素区102中的第二分支106具有相同的第二线宽L2及第二间隙S2，且第一子像素区101中的第一间隙S1小于第二子像素区102中的第二间隙S2(S1＜S2)。在此，线宽表示为分支的宽度，而间隙表示为分支之间的距离。
请参照图4，其显示依照本发明的一实施例的液晶显示面板的像素的分支的线宽/间隙及液晶效率之间的关系示意图。如图5所示，线A表示线宽为1微米(um)的分支在不同间隙及液晶效率(LC Efficiency)之间的关系，B表示线宽为2 um的分支在不同间隙及液晶效率之间的关系，C表示线宽为3um的分支在不同间隙及液晶效率之间的关系。因此，如图4所示，当像素电极结构中的分支间隙增大时，液晶效率会降低。
当液晶显示面板100的像素124显示影像时，第一电压V1是施加于第一子像素区101的像素电极，第二电压V2是施加于第二子像素区102的像素电极，且第一电压V1是高于第二电压V2(V1＞V2)。其中，第一电压V1与第二电压V2之间的电压差(V1-V2)是反比于像素124所显示的影像的灰阶值(gray-scale)。因此，当像素124显示具有较低灰阶值(低亮度)的影像时，第一子像素区101与第二子像素区102之间的电压差(V1-V2)较大。反之，当像素124显示具有较高灰阶值(高亮度)的影像时，第一子像素区101与第二子像素区102之间的电压差(V1-V2)较小。
因此，在常黑模式中，当像素124显示的影像的亮度(灰阶值)较低时，像素124中第一子像素区101与第二子像素区102之间的电压差(V1-V2)较大，使得第一子像素区101与第二子像素区102之间的亮度差异增大，而可有效地减少像素的视角问题，以改善显示质量。此像素的视角问题是指，当正面观看或斜视显示器时，像素所显示的影像效果不同。
再者，由于第一子像素区101中的第一间隙S1小于第二子像素区102中的第二间隙S2(S1＜S2)，故第一子像素区101的液晶效率可高于第二子像素区102的液晶效率，换言之，第一子像素区101所显示的影像亮度可高于第二子像素区102所显示的影像亮度。因此，通过像素124中不同子像素区的电极间隙，可进一步扩大第一子像素区101与第二子像素区102之间的亮度差异，以进一步地减少像素的视角问题。
在一实施例中，第一分支104或第二分支106之间的间隙S1或S2可小于7微米(um)，例如是介于1 um与7 um之间，且第一间隙S1与第二间隙S2之间的差异(S1-S2)可大于1 um，例如是介于1 um与3 um之间，以有效地减少像素的视角问题。
在一实施例中，当像素124显示的影像的亮度(灰阶值)较低时(亦即当像素124显示的影像的亮度低于一预设亮度时)，第一子像素区101与第二子像素区102之间的电压差(V1-V2)可大于1伏特(V)，例如是介于1 V与3 V之间，以有效地减少像素的视角问题。
由上述可知，在本发明的液晶显示面板及其应用的显示装置中，当像素显示的影像的亮度(灰阶值)较低时，通过像素中不同子像素区的不同间隙及不同电压驱动，可有效地扩大不同子像素区之间的亮度差异，以有效地减少像素的视角问题。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
 本发明的实施方式
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Claims (16)

  1. 一种液晶显示面板，用于常黑模式中，其特征在于：所述液晶显示面板包括：
    第一基板；
    第二基板，包括多个像素，其中每一所述像素包括一第一子像素区及一第二子像素区，所述第一子像素区包括多个第一分支，所述第一分支之间具有第一间隙，所述第二子像素区包括多个第二分支，所述第二分支之间具有第二间隙，所述第一间隙小于所述第二间隙，所述第一间隙与所述第二间隙之间的差异大于1微米；以及
    液晶层，形成于所述第一基板与所述第二基板之间；
    其中，当所述像素显示影像时，第一电压施加于所述第一子像素区，第二电压施加于所述第二子像素区，所述第一电压与所述第二电压之间的电压差是反比于所述像素所显示的影像的灰阶值，且所述第一电压是高于所述第二电压，当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是大于1伏特。
  2. 根据权利要求1所述的液晶显示面板，其中所述第一间隙与所述第二间隙之间的差异介于1微米与3微米之间。
  3. 根据权利要求1所述的液晶显示面板，其中当所述像素显示的影像的亮度低于所述预设亮度时，所述第一电压与所述第二电压之间的电压差是介于1伏特与3伏特之间。
  4. 根据权利要求1所述的液晶显示面板，其中所述第二子像素区的面积大于或等于所述第一子像素区的面积。
  5. 一种液晶显示面板，用于常黑模式中，所述液晶显示面板包括：
    第一基板；
    第二基板，包括多个像素，其中每一所述像素包括一第一子像素区及一第二子像素区，所述第一子像素区包括多个第一分支，所述第一分支之间具有第一间隙，所述第二子像素区包括多个第二分支，所述第二分支之间具有第二间隙，所述第一间隙小于所述第二间隙；以及
    液晶层，形成于所述第一基板与所述第二基板之间；
    其中，当所述像素显示影像时，第一电压施加于所述第一子像素区，第二电压施加于所述第二子像素区，所述第一电压与所述第二电压之间的电压差是反比于所述像素所显示的影像的灰阶值，且所述第一电压是高于所述第二电压。
  6. 根据权利要求5所述的液晶显示面板，其中所述第一间隙与所述第二间隙之间的差异大于1微米。
  7. 根据权利要求6所述的液晶显示面板，其中所述第一间隙与所述第二间隙之间的差异介于1微米与3微米之间。
  8. 8.根据权利要求5所述的液晶显示面板，其中当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是大于1伏特。
  9. 根据权利要求8所述的液晶显示面板，其中当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是介于1伏特与3伏特之间。
  10. 10.根据权利要求5所述的液晶显示面板，其中所述第二子像素区的面积大于或等于所述第一子像素区的面积。
  11. 一种显示装置，包括：
    背光模块；以及
    液晶显示面板，包括：
    第一基板；
    第二基板，包括多个像素，其中每一所述像素包括一第一子像素区及一第二子像素区，所述第一子像素区包括多个第一分支，所述第一分支之间具有第一间隙，所述第二子像素区包括多个第二分支，所述第二分支之间具有第二间隙，所述第一间隙小于所述第二间隙；以及
    液晶层，形成于所述第一基板与所述第二基板之间；
    其中，当所述像素显示影像时，第一电压施加于所述第一子像素区，第二电压施加于所述第二子像素区，所述第一电压与所述第二电压之间的电压差是反比于所述像素所显示的影像的灰阶值，且所述第一电压是高于所述第二电压。
  12. 根据权利要求11所述的显示装置，其中所述第一间隙与所述第二间隙之间的差异大于1微米。
  13. 根据权利要求12所述的显示装置，其中所述第一间隙与所述第二间隙之间的差异介于1微米与3微米之间。
  14. 根据权利要求11所述的显示装置，其中当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是大于1伏特。
  15. 根据权利要求14所述的显示装置，其中当所述像素显示的影像的亮度低于一预设亮度时，所述第一电压与所述第二电压之间的电压差是介于1伏特与3伏特之间。
  16. 根据权利要求11所述的显示装置，其中所述第二子像素区的面积大于或等于所述第一子像素区的面积。
PCT/CN2012/085196 2012-11-05 2012-11-23 液晶显示面板及其应用的显示装置 Ceased WO2014067198A1 (zh)

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