WO2023184624A1 - 液晶显示面板及其驱动方法 - Google Patents

液晶显示面板及其驱动方法 Download PDF

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Publication number
WO2023184624A1
WO2023184624A1 PCT/CN2022/087957 CN2022087957W WO2023184624A1 WO 2023184624 A1 WO2023184624 A1 WO 2023184624A1 CN 2022087957 W CN2022087957 W CN 2022087957W WO 2023184624 A1 WO2023184624 A1 WO 2023184624A1
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Prior art keywords
liquid crystal
display panel
crystal display
substrate
sub
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PCT/CN2022/087957
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English (en)
French (fr)
Inventor
罗国仁
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广州华星光电半导体显示技术有限公司
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Publication of WO2023184624A1 publication Critical patent/WO2023184624A1/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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black 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
    • G02F1/133—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
    • 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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix

Definitions

  • the present application relates to the field of display, and in particular to a liquid crystal display panel and a driving method thereof.
  • Liquid crystal display (LCD) panels have the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, thus dominating the display field.
  • the liquid crystal display panel includes an opposing color filter (CF) substrate and a thin film transistor (TFT) array substrate, as well as a liquid crystal layer sandwiched between the two.
  • CF color filter
  • TFT thin film transistor
  • impurity ions Due to the introduction of impurities or contamination of the liquid crystal material during the production process of the LCD panel, impurity ions usually exist in the liquid crystal layer of the LCD panel. These impurity ions will accumulate on the CF substrate and/or TFT substrate. Due to the bands of these impurity ions, There is charge, and a bias electric field will be generated on the CF substrate and/or TFT substrate. When the liquid crystal display panel displays a picture, the bias electric field on the CF substrate and/or TFT substrate will affect the normal display of the picture, causing the image on the liquid crystal display panel to It cannot display normally or the LCD panel has residual images when switching images, and the display effect is poor.
  • Embodiments of the present application provide a liquid crystal display panel and a driving method thereof.
  • the liquid crystal display panel will not have a display screen affected by a bias electric field generated by aggregation of impurity ions, and has a good display effect.
  • a liquid crystal display panel including:
  • a liquid crystal layer is sandwiched between the first substrate and the second substrate;
  • the liquid crystal display panel includes a plurality of sub-pixel areas, each of the sub-pixel areas includes a main pixel area and a sub-pixel area, and the second substrate is provided with a first pixel electrode, a second pixel electrode, a first TFT and a A second TFT, wherein the first pixel electrode is arranged corresponding to the main pixel area, the second pixel electrode is arranged corresponding to the sub-pixel area, and the first TFT is electrically connected to the first pixel electrode. Connection, the second TFT is electrically connected to the second pixel electrode;
  • the first pixel electrode is used to cause the main pixel area to display an image
  • the second pixel electrode is used to drive impurity ions in the liquid crystal layer to accumulate on the first substrate and/or the second The position on the substrate corresponding to the sub-pixel area
  • a first shielding layer is provided in the first substrate, and the first shielding layer is provided corresponding to the sub-pixel area.
  • the voltage applied to the first pixel electrode is a first square wave
  • the voltage applied to the second pixel electrode is a second square wave
  • the common voltage applied to the common electrode is constant. Voltage.
  • the maximum voltage of the first square wave is a 1
  • the minimum voltage of the first square wave is a 2
  • the maximum voltage of the second square wave is b 1
  • the maximum voltage of the second square wave is b 1
  • the minimum voltage of the wave is b 2
  • the area of the main pixel area is greater than or equal to the area of the sub-pixel area.
  • the first shielding layer is made of metal.
  • the metal includes one or more of molybdenum and titanium.
  • the first substrate is further provided with a second shielding layer, and the second shielding layer is disposed in a spacing area between adjacent sub-pixel areas.
  • embodiments of the present application provide a driving method for a liquid crystal display panel, which is used to drive the liquid crystal display panel as described above.
  • the driving method includes:
  • a first square wave is used to drive the first pixel electrode, a second square wave is used to drive the second pixel electrode, and at the same time, a constant common voltage is applied to the common electrode of the liquid crystal display panel;
  • the maximum voltage of the first square wave is a 1 and the minimum voltage of the first square wave is a 2 ; the maximum voltage of the second square wave is b 1 and the minimum voltage of the second square wave is b 2 ;
  • the sub-pixel area includes a main pixel area and a sub-pixel area
  • the first pixel electrode of the main pixel area and the second pixel electrode of the sub-pixel area are respectively formed by a first TFT and a second TFT.
  • Driving so that the first pixel electrode is used to cause the main pixel area to display an image
  • the second pixel electrode is used to drive impurity ions in the liquid crystal layer to accumulate on the first substrate and/or the second substrate at a position corresponding to the sub-pixel area
  • Setting the first blocking layer to block the sub-pixel area can prevent light leakage from the sub-pixel area from affecting the screen display. Therefore, the LCD panel will not have the display screen affected by the bias electric field generated by the accumulation of impurity ions, and the display effect is better. .
  • FIG. 1 is a first structural schematic diagram of a liquid crystal display panel provided by an embodiment of the present application.
  • FIG. 2 is a second structural schematic diagram of a liquid crystal display panel provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram corresponding to the sub-pixel area and the first shielding layer provided by the embodiment of the present application.
  • Figure 4 is a schematic structural diagram of the first square wave provided by the embodiment of the present application.
  • Figure 5 is a schematic structural diagram of a second square wave provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the aggregation effect of impurity ions in the liquid crystal display panel provided by the embodiment of the present application.
  • Figure 1 is a first structural schematic diagram of a liquid crystal display panel provided by an embodiment of the present application.
  • Figure 2 is a second structural schematic diagram of a liquid crystal display panel provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of the second structure of a liquid crystal display panel provided by an embodiment of the present application. The corresponding schematic diagram of the sub-pixel area and the first occlusion layer is provided in the application embodiment.
  • the embodiment of the present application provides a liquid crystal display panel 100, which includes a first substrate 10, a second substrate 20 and a liquid crystal layer 30. The first substrate 10 and the second substrate 20 are arranged oppositely; the liquid crystal layer 30 is sandwiched between the first substrate 10 and the second substrate 20. between the second substrate 20 .
  • the liquid crystal display panel 100 includes a plurality of sub-pixel areas s. Each sub-pixel area s includes a main pixel area m and a sub-pixel area n.
  • the second substrate is provided with a first pixel electrode 421, a second pixel electrode 422, a first TFT ( (not shown) and a second TFT (not shown), wherein the first pixel electrode 421 is arranged corresponding to the main pixel area, the second pixel electrode 422 is arranged corresponding to the sub-pixel area, and the first TFT is electrically connected to the first pixel electrode 421 electrically connected, the second TFT is electrically connected to the second pixel electrode 422;
  • the first pixel electrode 421 is used to display images in the main pixel area m, and the second pixel electrode 422 is used to drive impurity ions in the liquid crystal layer 30 to accumulate on the first substrate 10 and/or the second substrate 20 corresponding to the sub-pixels.
  • a first shielding layer 51 is provided on the first substrate 10, and the first shielding layer 51 is arranged corresponding to the sub-pixel area n.
  • the side of the first substrate 10 away from the liquid crystal layer 30 is the light emitting side.
  • the sub-pixel area s includes a main pixel area m and a sub-pixel area n
  • the first pixel electrode 421 of the main pixel area m and the second pixel electrode 422 of the sub-pixel area n are respectively composed of
  • the first TFT and the second TFT are driven so that the first pixel electrode 421 is used to display the image in the main pixel area m under the driving of the first TFT, and the second pixel electrode 422 is used to attract the liquid crystal layer under the driving of the second TFT.
  • the impurity ions in the liquid crystal layer 30 cause the impurity ions in the liquid crystal layer 30 to gather at the position corresponding to the sub-pixel area n on the first substrate 10 and/or the second substrate 20, and the sub-pixel area n is protected by setting the first shielding layer 51. Blocking can prevent light leakage in the sub-pixel area n from affecting the screen display. Therefore, the liquid crystal display panel 100 will not have the display screen affected by the bias electric field generated by the accumulation of impurity ions, and the display effect is better.
  • the first blocking layer 51 is used to block the sub-pixel area n, that is, the picture is displayed only through the main pixel area m. Since impurity ions will not accumulate at the position corresponding to the main pixel area m on the first substrate 10 and/or the second substrate 20 , a better display effect can be achieved, thereby improving the display quality of the entire liquid crystal display panel 100 .
  • the liquid crystal display panel 100 may also include a common electrode 41 disposed in the first substrate 10 or the second substrate 20 ; the common electrode 41 applied to the first pixel electrode 421 The voltage is a first square wave, the voltage applied to the second pixel electrode 422 is a second square wave, and the common voltage applied to the common electrode 41 is a constant voltage.
  • the maximum voltage of the first square wave is a 1 and the minimum voltage of the first square wave is a 2 ; the maximum voltage of the second square wave is b 1 and the minimum voltage of the second square wave is b. 2 ;
  • the area of the main pixel area m is greater than or equal to the area of the sub-pixel area n.
  • the area of the sub-pixel area n may be 4/5, 3/5, 2/5, 2/3, 1/2, 1/3, 1/4, or 1/5 of the area of the main pixel area m. , 1/6, 1/7, 1/8, 1/9, 1/10, etc. Since the area of the sub-pixel region n is smaller, that is, the sub-pixel region n occupies a smaller proportion in the display area of the liquid crystal display panel 100, which is beneficial to improving the aperture ratio and display brightness of the liquid crystal display panel 100.
  • the sub-pixel area s is designed as 8 domains, and both the main pixel area m and the sub-pixel area n are designed as 4 domains.
  • the material of the first shielding layer 51 is black resin material. Since the black resin material has good light-absorbing properties, it can effectively absorb light and avoid light leakage in the area corresponding to the sub-pixel area n on the light-emitting surface of the liquid crystal display panel 100 to affect the display effect.
  • the black resin material may include a resin material and a black pigment.
  • the resin material may be epoxy resin, polyacrylate, etc., and the black pigment may be carbon black, etc.
  • the material of the first shielding layer 51 is metal.
  • the metal may include one or more of molybdenum (Mo) and titanium (Ti). Since metals such as molybdenum and titanium have good reflective properties, they can effectively block light and prevent light leakage in the area corresponding to the sub-pixel area n on the light-emitting surface of the liquid crystal display panel 100 to affect the display effect.
  • the first substrate 10 is also provided with a second shielding layer 52 , and the second shielding layer 52 is disposed in the interval area between adjacent sub-pixel areas s.
  • the material of the second shielding layer 52 is black resin material. Since the black resin material has good light-absorbing properties, it can effectively absorb light and avoid light leakage in the interval area corresponding to the sub-pixel area s on the light-emitting surface of the liquid crystal display panel 100 to affect the display effect.
  • the material of the second shielding layer 52 is metal.
  • the metal may include one or more of molybdenum (Mo) and titanium (Ti). Since metals such as molybdenum and titanium have good reflective properties, they can effectively block light and avoid light leakage in the interval area corresponding to the sub-pixel area s on the light-emitting surface of the liquid crystal display panel 100 to affect the display effect.
  • the first substrate 10 is provided with a common electrode 41 and a color filter 12 .
  • the second substrate 20 is provided with a first pixel electrode 421 , a second pixel electrode 422 , a first TFT (not shown) and Second TFT (not shown).
  • the liquid crystal display panel 100 may be vertically aligned (Vertical Alignment, VA) type liquid crystal display panel.
  • the first substrate 10 is provided with a color filter 12
  • the second substrate 20 is provided with a common electrode 41 , a first pixel electrode 421 , a second pixel electrode 422 , a first TFT (not shown) and Second TFT (not shown).
  • the common electrode 41 is separated from the first pixel electrode 421 and the second pixel electrode 422 by the insulating layer 60 .
  • the liquid crystal display panel 100 may be a fringe-field switching (FFS) type liquid crystal display panel.
  • FFS fringe-field switching
  • the first substrate 10 may also include a first substrate 11 , and film layers such as the common electrode 41 and the color filter 12 may be disposed on the first substrate 11 .
  • the first substrate 11 may be a rigid substrate or a flexible substrate.
  • the material of the rigid substrate may be glass, and the material of the flexible substrate may be polymer such as polyimide.
  • the second substrate 20 may also include a second substrate 21, and film layers such as the first pixel electrode 421 and the second pixel electrode 422 may be disposed on the second substrate 21.
  • the second substrate 21 may be a rigid substrate or a flexible substrate.
  • the material of the rigid substrate may be glass, and the material of the flexible substrate may be polymer such as polyimide.
  • An embodiment of the present application also provides a driving method for a liquid crystal display panel, which can be used to drive the liquid crystal display panel 100 in any of the above embodiments.
  • the driving method includes:
  • a first square wave is used to drive the first pixel electrode 421.
  • a second square wave is used to drive the second pixel electrode 422.
  • the common electrode 41 of the liquid crystal display panel 100 Apply a constant common voltage;
  • the maximum voltage of the first square wave is a 1 and the minimum voltage of the first square wave is a 2 ; the maximum voltage of the second square wave is b 1 and the minimum voltage of the second square wave is b 2 ; the magnitude of the common voltage is c ;
  • ⁇ b 1 -c ⁇ - ⁇ cb 2 ⁇
  • can be 0.5V, 1V, 1.5V, 2V, 2.5V, 3V, 3.5V, 4V, etc.
  • the maximum voltage b 1 of the second square wave is 9V
  • the minimum voltage b 2 of the second square wave is 4V
  • the common voltage c is 7V
  • ⁇ b 1 -c ⁇ 2V
  • ⁇ cb 2 ⁇ 3V
  • 1V.
  • the impurity ions in the layer 30 alternately move the same distance in opposite directions within the liquid crystal layer 30 , so that the actual displacement of the impurity ions in the direction from the first substrate 10 to the second substrate 20 is zero, ultimately causing the impurity ions to be suspended.
  • the impurity ions will not be adsorbed on the first substrate 10 and/or the second substrate 20 at the position corresponding to the main pixel area m, there will be no cause-effect in the main pixel area m of the liquid crystal display panel 100.
  • the accumulation of impurity ions on the first substrate 10 and/or the second substrate 20 causes a bias electric field to be generated, thereby affecting the display screen.
  • the maximum voltage b 1 and the minimum voltage b 2 of the second square wave are respectively used to conduct the second pixel electrode 422 During driving, the directions of the voltages on both sides of the liquid crystal layer 30 are opposite, but the absolute values of the voltages are not equal. Therefore, with the alternation of the maximum voltage b 1 and the minimum voltage b 2 of the first square wave, the impurities in the liquid crystal layer 30 The ions move alternately in opposite directions in the liquid crystal layer 30.
  • the distances that the impurity ions move in the opposite directions in the liquid crystal layer 30 are different, and then the impurity ions move from The actual displacement in the direction from the first substrate 10 to the second substrate 20 will not be zero, which will eventually cause the impurity ions to gradually move toward the first substrate 10 and/or the second substrate 20 and be adsorbed on the first substrate 10 and/or
  • the position on the second substrate 20 corresponds to the sub-pixel area n. Therefore, in the sub-pixel area n of the liquid crystal display panel 100, impurity ions will accumulate on the first substrate 10 and/or the second substrate 20 to generate a bias electric field.
  • the sub-pixel area n is also used to display the image, the display image of the liquid crystal display panel 100 will inevitably be affected.
  • the first shielding layer 51 is provided on the first substrate 10, and the first shielding layer 51 is used to display the sub-pixel area n is blocked, that is to say, in the embodiment of the present application, the sub-pixel area n is not used for picture display, so the sub-pixel area n will not have any impact on the display picture of the liquid crystal display panel 100 .
  • the impurity ions 70 corresponding to the sub-pixel region n in the liquid crystal layer 30 are gradually adsorbed On the first substrate 10 and/or the second substrate 20 , the concentration of the impurity ions 70 in the area corresponding to the sub-pixel area n in the liquid crystal layer 30 is gradually reduced due to the area corresponding to the main pixel area m in the liquid crystal layer 30
  • the concentration of impurity ions 70 is relatively high, so the impurity ions 70 in the area corresponding to the main pixel area m in the liquid crystal layer 30 will gradually diffuse toward the area corresponding to the sub-pixel area n in the liquid crystal layer 30 , and finally, in the liquid crystal layer 30
  • the impurity ions 70 in the area corresponding to the main pixel area m are all transferred to the area corresponding to the sub-pixel area n in the liquid crystal layer
  • An embodiment of the present application also provides a display device, including the liquid crystal display panel 100 in any of the above embodiments.
  • the display device can be a mobile terminal such as a television, a mobile phone, or a tablet computer, or a game device, an augmented reality (Augmented Reality, AR) device, a virtual reality (VR) device, a data storage device, or an audio player.
  • a mobile terminal such as a television, a mobile phone, or a tablet computer, or a game device, an augmented reality (Augmented Reality, AR) device, a virtual reality (VR) device, a data storage device, or an audio player.

Abstract

一种液晶显示面板（100）及其驱动方法。液晶显示面板（100）包括第一像素电极（421）和第二像素电极（422），第一像素电极（421）用于使主像素区域（m）显示图像，第二像素电极（422）用于驱使液晶层（30）中的杂质离子聚集在第一基板（10）和/或第二基板（20）上对应于次像素区域（n）的位置，液晶显示面板（100）不会出现因杂质离子聚集产生偏电场而导致显示画面受到影响的情况，显示效果较好。

Description

液晶显示面板及其驱动方法 技术领域
本申请涉及显示领域，特别涉及一种液晶显示面板及其驱动方法。
 背景技术
液晶显示面板（liquid crystal display，LCD）具有画质好、体积小、重量轻、低驱动电压、低功耗、无辐射和制造成本相对较低等优点，从而在显示领域占主导地位。液晶显示面板包括对置的彩色滤光片（Color Filter，CF）基板和薄膜晶体管（Thin Film Transistor，TFT）阵列基板以及夹置在两者之间的液晶层。
 技术问题
由于液晶显示面板的生产制程中会引入杂质或者液晶材料受到污染，液晶显示面板的液晶层中通常会存在杂质离子，这些杂质离子会聚集在CF基板和/或TFT基板上，由于这些杂质离子带有电荷，CF基板和/或TFT基板上会产生偏电场，当液晶显示面板显示画面时，CF基板和/或TFT基板上的偏电场会影响画面的正常显示，从而导致液晶显示面板上的图像不能正常显示或者液晶显示面板在切换图像时画面出现残影，显示效果较差。
 技术解决方案
本申请实施例提供一种液晶显示面板及其驱动方法，该液晶显示面板不会出现因杂质离子聚集产生偏电场而导致显示画面受到影响的情况，显示效果较好。
第一方面，本申请实施例提供一种液晶显示面板，包括：
第一基板；
第二基板，与所述第一基板相对设置；
液晶层，夹设于所述第一基板与所述第二基板之间；
所述液晶显示面板包括多个子像素区域，每个所述子像素区域均包括主像素区域和次像素区域，所述第二基板中设有第一像素电极、第二像素电极、第一TFT以及第二TFT，其中，所述第一像素电极对应于所述主像素区域设置，所述第二像素电极对应于所述次像素区域设置，所述第一TFT与所述第一像素电极电性连接，所述第二TFT与所述第二像素电极电性连接；
其中，所述第一像素电极用于使所述主像素区域显示图像，所述第二像素电极用于驱使所述液晶层中的杂质离子聚集在所述第一基板和/或所述第二基板上对应于所述次像素区域的位置；
所述第一基板中设有第一遮挡层，所述第一遮挡层对应所述次像素区域设置。
在一些实施例中，施加于所述第一像素电极上的电压为第一方波，施加于所述第二像素电极上的电压为第二方波，施加于公共电极上的公共电压为恒定电压。
在一些实施例中，所述第一方波的最大电压为a 1，所述第一方波的最小电压为a 2；所述第二方波的最大电压为b 1，所述第二方波的最小电压为b 2；所述公共电压的大小为c；其中，a 1、a 2、b 1、b 2、c之间的关系为│a 1-c│=│c-a 2│，且│b 1-c│≠│c-b 2│。
在一些实施例中，|│b 1-c│-│c-b 2│|≧0.5V。
在一些实施例中，所述主像素区域的面积大于或等于所述次像素区域的面积。
在一些实施例中，所述第一遮挡层的材料为金属。
在一些实施例中，所述金属包括钼和钛中的一种或一种以上。
在一些实施例中，所述第一基板中还设有第二遮挡层，所述第二遮挡层设置于相邻的所述子像素区域的间隔区域内。
第二方面，本申请实施例提供一种液晶显示面板的驱动方法，用于驱动如上所述的液晶显示面板，所述驱动方法包括：
采用第一方波对所述第一像素电极进行驱动，采用第二方波对所述第二像素电极进行驱动，同时，在液晶显示面板的公共电极上施加恒定的公共电压；
所述第一方波的最大电压为a 1，所述第一方波的最小电压为a 2；所述第二方波的最大电压为b 1，所述第二方波的最小电压为b 2；所述公共电压的大小为c；其中，a 1、a 2、b 1、b 2、c之间的关系为│a 1-c│=│c-a 2│，且│b 1-c│≠│c-b 2│。
在一些实施例中，|│b 1-c│-│c-b 2│|≧0.5V。
有益效果
本申请实施例提供的液晶显示面板，由于子像素区域包括主像素区域和次像素区域，主像素区域的第一像素电极和次像素区域的第二像素电极分别由第一TFT和第二TFT进行驱动，使得第一像素电极用于使主像素区域显示图像，第二像素电极用于驱使液晶层中的杂质离子聚集在第一基板和/或第二基板上对应于次像素区域的位置，通过设置第一遮挡层对次像素区域进行遮挡，可以避免次像素区域漏光影响画面显示，因此该液晶显示面板不会出现因杂质离子聚集产生偏电场而导致显示画面受到影响的情况，显示效果较好。
 附图说明
图1为本申请实施例提供的液晶显示面板的第一种结构示意图。
图2为本申请实施例提供的液晶显示面板的第二种结构示意图。
图3为本申请实施例提供的子像素区域和第一遮挡层的对应示意图。
图4为本申请实施例提供的第一方波的结构示意图。
图5为本申请实施例提供的第二方波的结构示意图。
图6为本申请实施例提供的液晶显示面板中的杂质离子的聚集效果示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1至图3，图1为本申请实施例提供的液晶显示面板的第一种结构示意图，图2为本申请实施例提供的液晶显示面板的第二种结构示意图，图3为本申请实施例提供的子像素区域和第一遮挡层的对应示意图。本申请实施例提供一种液晶显示面板100，包括第一基板10、第二基板20以及液晶层30，第一基板10与第二基板20相对设置；液晶层30夹设于第一基板10与第二基板20之间。
液晶显示面板100包括多个子像素区域s，每个子像素区域s均包括主像素区域m和次像素区域n，第二基板中设有第一像素电极421、第二像素电极422、第一TFT（未图示）以及第二TFT（未图示），其中，第一像素电极421对应于主像素区域设置，第二像素电极422对应于次像素区域设置，第一TFT与第一像素电极421电性连接，第二TFT与第二像素电极422电性连接；
其中，第一像素电极421用于使主像素区域m显示图像，第二像素电极422用于驱使液晶层30中的杂质离子聚集在第一基板10和/或第二基板20上对应于次像素区域n的位置；
第一基板10上设有第一遮挡层51，第一遮挡层51对应次像素区域n设置。
可以理解的是，第一基板10上背离液晶层30的一侧为出光侧。
本申请实施例提供的液晶显示面板100，由于子像素区域s包括主像素区域m和次像素区域n，主像素区域m的第一像素电极421和次像素区域n的第二像素电极422分别由第一TFT和第二TFT进行驱动，使得第一像素电极421用于在第一TFT驱动下使主像素区域m用于显示图像，第二像素电极422用于在第二TFT驱动下吸引液晶层30中的杂质离子，使液晶层30中的杂质离子聚集在第一基板10和/或第二基板20上对应于次像素区域n的位置，通过设置第一遮挡层51对次像素区域n进行遮挡，可以避免次像素区域n漏光影响画面显示，因此该液晶显示面板100不会出现因杂质离子聚集产生偏电场而导致显示画面受到影响的情况，显示效果较好。
可以理解的是，由于杂质离子聚集在第一基板10和/或第二基板20上对应于次像素区域n的位置，因此这些位置会产生偏电场，如果将次像素区域n用于画面显示，其显示的画面质量必然较差，从而影响液晶显示面板100的整体显示效果，因此本申请实施例采用第一遮挡层51对次像素区域n进行遮挡，即仅通过主像素区域m来显示画面，由于第一基板10和/或第二基板20上对应于主像素区域m的位置不会聚集杂质离子，因此可以实现较好的显示效果，进而可以提升整个液晶显示面板100的显示品质。
请结合图1和图2，在一些实施例中，液晶显示面板100还可以包括公共电41，公共电极41设置于第一基板10或第二基板20中；施加于第一像素电极421上的电压为第一方波，施加于第二像素电极422上的电压为第二方波，施加于公共电极41上的公共电压为恒定电压。
请结合图4和图5，第一方波的最大电压为a 1，第一方波的最小电压为a 2；第二方波的最大电压为b 1，第二方波的最小电压为b 2；公共电压的大小为c；其中，a 1、a 2、b 1、b 2、c之间的关系为：│a 1-c│=│c-a 2│，且│b 1-c│≠│c-b 2│。
示例性地，|│b 1-c│-│c-b 2│|≧0.5V。
示例性地，主像素区域m的面积大于或等于次像素区域n的面积。示例性地，次像素区域n的面积可以为主像素区域m的面积的4/5、3/5、2/5、2/3、1/2、1/3、1/4、1/5、1/6、1/7、1/8、1/9、1/10等。由于次像素区域n的面积较小，即，次像素区域n在液晶显示面板100的显示区域中的占比较小，从而有利于提升液晶显示面板100的开口率和显示亮度。
在一些实施例中，子像素区域s为8domain（8畴）设计，其中，主像素区域m与次像素区域n均为4domain（4畴）设计。
示例性地，第一遮挡层51的材料为黑色树脂材料。由于黑色树脂材料具有较好的吸光性能，因此可以有效的吸收光线，避免液晶显示面板100的出光面上对应于次像素区域n的区域出现漏光导致影响显示效果。示例性地，黑色树脂材料可以包括树脂材料和黑色颜料，树脂材料可以为环氧树脂、聚丙烯酸酯等，黑色颜料可以为炭黑等。
示例性地，第一遮挡层51的材料为金属。在一些实施例中，金属可以包括钼（Mo）和钛（Ti）中的一种或多种。由于钼、钛等金属具有较好的反光性能，因此可以有效的阻挡光线，避免液晶显示面板100的出光面上对应于次像素区域n的区域出现漏光导致影响显示效果。
请结合图1和图2，第一基板10上还设有第二遮挡层52，第二遮挡层52设置于相邻的子像素区域s的间隔区域内。
示例性地，第二遮挡层52的材料为黑色树脂材料。由于黑色树脂材料具有较好的吸光性能，因此可以有效的吸收光线，避免液晶显示面板100的出光面上对应于子像素区域s的间隔区域出现漏光导致影响显示效果。
示例性地，第二遮挡层52的材料为金属。在一些实施例中，金属可以包括钼（Mo）和钛（Ti）中的一种或多种。由于钼、钛等金属具有较好的反光性能，因此可以有效的阻挡光线，避免液晶显示面板100的出光面上对应于子像素区域s的间隔区域出现漏光导致影响显示效果。
请结合图1，第一基板10上设有公共电极41和彩色滤光片12，第二基板20上设有第一像素电极421、第二像素电极422、第一TFT（未图示）以及第二TFT（未图示）。此时，液晶显示面板100可以为垂直配向（Vertical Alignment，VA）型液晶显示面板。
请结合图2，第一基板10上设有彩色滤光片12，第二基板20上设有公共电极41、第一像素电极421、第二像素电极422、第一TFT（未图示）以及第二TFT（未图示）。其中，公共电极41和第一像素电极421、第二像素电极422通过绝缘层60间隔开。此时，液晶显示面板100可以为边缘电场驱动（Fringe-field Switching，FFS）型液晶显示面板。
请结合图1和图2，第一基板10还可以包括第一衬底11，公共电极41、彩色滤光片12等膜层可以设置于第一衬底11上。第一衬底11可以为刚性基板或柔性基板，刚性基板的材料可以为玻璃，柔性基板的材料可以为聚酰亚胺等聚合物。
第二基板20还可以包括第二衬底21，第一像素电极421、第二像素电极422等膜层可以设置于第二衬底21上。第二衬底21可以为刚性基板或柔性基板，刚性基板的材料可以为玻璃，柔性基板的材料可以为聚酰亚胺等聚合物。
本申请实施例还提供一种液晶显示面板的驱动方法，可以用于驱动上述任一实施例中的液晶显示面板100，驱动方法包括：
请参阅图4，采用第一方波对第一像素电极421进行驱动，请参阅图5，采用第二方波对第二像素电极422进行驱动，同时，在液晶显示面板100的公共电极41上施加恒定的公共电压；
第一方波的最大电压为a 1，第一方波的最小电压为a 2；第二方波的最大电压为b 1，第二方波的最小电压为b 2；公共电压的大小为c；其中，a 1、a 2、b 1、b 2、c之间的关系为：│a 1-c│=│c-a 2│，且│b 1-c│≠│c-b 2│。
示例性地，当第一方波的最大电压a 1为9V，第一方波的最小电压a 2为5V，公共电压c为7V时，│a 1-c│=2V，│c-a 2│=2V，此时，│a 1-c│=│c-a 2│。
在一些实施例中，|│b 1-c│-│c-b 2│|≧0.5V。示例性地，|│b 1-c│-│c-b 2│|的数值可以为0.5V、1V、1.5V、2V、2.5V、3V、3.5V、4V等。
示例性地，当第二方波的最大电压b 1为9V，第二方波的最小电压b 2为4V，公共电压c为7V时，│b 1-c│=2V，│c-b 2│=3V，此时，│b 1-c│≠│c-b 2│，|│b 1-c│-│c-b 2│|=1V。
需要说明的是，对主像素区域m而言，由于│a 1-c│=│c-a 2│，也即是说，在分别采用第一方波的最大电压a 1和最小电压a 2对第一像素电极421进行驱动时，液晶层30的两侧的电压的方向刚好相反，且电压的绝对值相等，因此，随着第一方波的最大电压a 1和最小电压a 2的交替，液晶层30内的杂质离子在液晶层30内沿着相反的方向交替移动相同的距离，使得杂质离子在从第一基板10至第二基板20的方向上的实际位移为零，最终导致杂质离子悬浮在液晶层30中，由于杂质离子不会吸附在第一基板10和/或第二基板20上对应于主像素区域m的位置，因此在液晶显示面板100的主像素区域m，不会出现因杂质离子聚集在第一基板10和/或第二基板20上导致产生偏电场进而导致显示画面受到影响的情况。
对次像素区域n而言，由于│b 1-c│≠│c-b 2│，也即是说，在分别采用第二方波的最大电压b 1和最小电压b 2对第二像素电极422进行驱动时，液晶层30的两侧的电压的方向相反，但是电压的绝对值不相等，因此，随着第一方波的最大电压b 1和最小电压b 2的交替，液晶层30内的杂质离子在液晶层30内沿着相反的方向交替移动，由于两个方向上的电压的绝对值不相等，因此杂质离子在液晶层30内沿着相反的方向移动的距离不同，进而杂质离子在从第一基板10至第二基板20的方向上的实际位移不会为零，最终会导致杂质离子逐渐朝向第一基板10和/或第二基板20移动，并且吸附在第一基板10和/或第二基板20上对应于次像素区域n的位置，因此在液晶显示面板100的次像素区域n，杂质离子会聚集在第一基板10和/或第二基板20上导致产生偏电场，如果此时次像素区域n也用于显示画面，那么液晶显示面板100的显示画面必然受到影响，但是由于第一基板10上设有第一遮挡层51，且第一遮挡层51用于对次像素区域n进行遮挡，也即是说，本申请实施例中次像素区域n不用于画面显示，因此次像素区域n不会对液晶显示面板100的显示画面造成任何影响。
并且，如图6所示，由于次像素区域n内存在偏置电压（即|│b 1-c│-│c-b 2│|），液晶层30中对应次像素区域n的杂质离子70逐渐吸附在第一基板10和/或第二基板20上，从而导致液晶层30中对应于次像素区域n的区域的杂质离子70的浓度逐渐降低，由于液晶层30中对应于主像素区域m的区域的杂质离子70的浓度相对较高，因此液晶层30中对应于主像素区域m的区域的杂质离子70会逐渐朝向液晶层30中对应于次像素区域n的区域扩散，最终，液晶层30中对应于主像素区域m的区域的杂质离子70全部转移至液晶层30中对应于次像素区域n的区域，并且吸附在第一基板10和/或第二基板20上对应于次像素区域n的位置，此时，由于液晶层30中对应于主像素区域m的区域已经不存在杂质离子70，因此可以实现最佳的显示效果。
本申请实施例还提供一种显示装置，包括上述任一实施例中的液晶显示面板100。
示例性地，显示装置可以为电视、手机、平板电脑等移动终端，还可以是游戏设备、增强现实（Augmented Reality，AR）设备、虚拟现实（Virtual Reality，VR）设备、数据存储装置、音频播放装置、视频播放装置、可穿戴设备等具有显示屏的设备，其中可穿戴设备可以是智能手环、智能眼镜、智能手表、智能装饰等。
以上对本申请实施例提供的液晶显示面板及其驱动方法进行了详细介绍。本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请。同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种液晶显示面板，其中，包括：
    第一基板；
    第二基板，与所述第一基板相对设置；
    液晶层，夹设于所述第一基板与所述第二基板之间；
    所述液晶显示面板包括多个子像素区域，每个所述子像素区域均包括主像素区域和次像素区域，所述第二基板中设有第一像素电极、第二像素电极、第一TFT以及第二TFT，其中，所述第一像素电极对应于所述主像素区域设置，所述第二像素电极对应于所述次像素区域设置，所述第一TFT与所述第一像素电极电性连接，所述第二TFT与所述第二像素电极电性连接；
    其中，所述第一像素电极用于使所述主像素区域显示图像，所述第二像素电极用于驱使所述液晶层中的杂质离子聚集在所述第一基板和/或所述第二基板上对应于所述次像素区域的位置；
    所述第一基板中设有第一遮挡层，所述第一遮挡层对应所述次像素区域设置。
  2. 根据权利要求1所述的液晶显示面板，其中，所述液晶显示面板还包括公共电极，所述公共电极设置于所述第一基板或所述第二基板中；
    施加于所述第一像素电极上的电压为第一方波，施加于所述第二像素电极上的电压为第二方波，施加于公共电极上的公共电压为恒定电压。
  3. 根据权利要求2所述的液晶显示面板，其中，所述第一方波的最大电压为a 1，所述第一方波的最小电压为a 2；所述第二方波的最大电压为b 1，所述第二方波的最小电压为b 2；所述公共电压的大小为c；其中，a 1、a 2、b 1、b 2、c之间的关系为│a 1-c│=│c-a 2│，且│b 1-c│≠│c-b 2│。
  4. 根据权利要求3所述的液晶显示面板，其中，|│b 1-c│-│c-b 2│|≧0.5V。
  5. 根据权利要求1所述的液晶显示面板，其中，所述主像素区域的面积大于或等于所述次像素区域的面积。
  6. 根据权利要求1所述的液晶显示面板，其中，所述第一遮挡层的材料为金属。
  7. 根据权利要求6所述的液晶显示面板，其中，所述金属包括钼和钛中的一种或一种以上。
  8. 根据权利要求1所述的液晶显示面板，其中，所述第一遮挡层的材料为黑色树脂材料。
  9. 根据权利要求1所述的液晶显示面板，其中，所述第一基板中还设有第二遮挡层，所述第二遮挡层设置于相邻的所述子像素区域的间隔区域内。
  10. 根据权利要求9所述的液晶显示面板，其中，所述第二遮挡层的材料为金属。
  11. 根据权利要求10所述的液晶显示面板，其中，所述金属包括钼和钛中的一种或一种以上。
  12. 一种液晶显示面板的驱动方法，其中，用于驱动如权利要求1所述的液晶显示面板，所述驱动方法包括：
    采用第一方波对所述第一像素电极进行驱动，采用第二方波对所述第二像素电极进行驱动，同时，在液晶显示面板的公共电极上施加恒定的公共电压；
    所述第一方波的最大电压为a 1，所述第一方波的最小电压为a 2；所述第二方波的最大电压为b 1，所述第二方波的最小电压为b 2；所述公共电压的大小为c；其中，a 1、a 2、b 1、b 2、c之间的关系为│a 1-c│=│c-a 2│，且│b 1-c│≠│c-b 2│。
  13. 根据权利要求12所述的液晶显示面板的驱动方法，其中，|│b 1-c│-│c-b 2│|≧0.5V。
  14. 根据权利要求12所述的液晶显示面板的驱动方法，其中，所述公共电极设置于所述第一基板或所述第二基板中。
  15. 根据权利要求12所述的液晶显示面板的驱动方法，其中，所述主像素区域的面积大于或等于所述次像素区域的面积。
  16. 根据权利要求12所述的液晶显示面板的驱动方法，其中，所述第一遮挡层的材料为金属。
  17. 根据权利要求16所述的液晶显示面板的驱动方法，其中，所述金属包括钼和钛中的一种或一种以上。
  18. 根据权利要求12所述的液晶显示面板的驱动方法，其中，所述第一遮挡层的材料为黑色树脂材料。
  19. 根据权利要求12所述的液晶显示面板的驱动方法，其中，所述第一基板中还设有第二遮挡层，所述第二遮挡层设置于相邻的所述子像素区域的间隔区域内。
  20. 根据权利要求19所述的液晶显示面板的驱动方法，其中，所述第二遮挡层的材料为金属。
PCT/CN2022/087957 2022-03-31 2022-04-20 液晶显示面板及其驱动方法 WO2023184624A1 (zh)

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