WO2017219403A1 - 可切换视角的液晶面板及液晶显示器 - Google Patents

可切换视角的液晶面板及液晶显示器 Download PDF

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WO2017219403A1
WO2017219403A1 PCT/CN2016/089779 CN2016089779W WO2017219403A1 WO 2017219403 A1 WO2017219403 A1 WO 2017219403A1 CN 2016089779 W CN2016089779 W CN 2016089779W WO 2017219403 A1 WO2017219403 A1 WO 2017219403A1
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electrode
viewing angle
liquid crystal
crystal panel
substrate
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PCT/CN2016/089779
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English (en)
French (fr)
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谢畅
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武汉华星光电技术有限公司
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Priority to US15/125,178 priority Critical patent/US10359655B2/en
Publication of WO2017219403A1 publication Critical patent/WO2017219403A1/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
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • 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
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles
    • 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
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
    • 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
    • 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
    • G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel

Definitions

  • the distance between the auxiliary electrode and the two ends of the lower viewing angle is equal to the distance between the pixel electrode and the common electrode.
  • the pixel electrode, the common electrode, the viewing angle upper electrode, the viewing angle lower electrode, and the auxiliary electrode are all made of a transparent conductive material.
  • liquid crystal molecules between the pixel electrode and the common electrode rotate in a plane parallel to the upper substrate and the lower substrate, the viewing angle upper electrode and the viewing angle lower electrode, the subsidiary The liquid crystal molecules between the electrodes rotate in a plane perpendicular to the upper substrate and the lower substrate.
  • the surface of the lower substrate facing the upper substrate is further provided with a pixel electrode and a common electrode arranged at intervals, and the pixel electrode and the common electrode are located at a side of the auxiliary electrode away from the lower electrode of the viewing angle
  • the difference between the length of the electrode on the viewing angle and the length of the electrode at the viewing angle is four times the distance between the pixel electrode and the common electrode.
  • the auxiliary electrode, the pixel electrode, and the common electrode have the same shape and shape.
  • FIG. 2 is a schematic diagram of the working principle of a liquid crystal panel with switchable viewing angle according to Embodiment 1 of the present invention.
  • the sub-pixel region 20 is a portion including the viewing angle upper electrode 202, the viewing angle lower electrode 204, and the auxiliary electrode 206.
  • the viewing angle upper electrode 202 and the viewing angle lower electrode 204 are correspondingly disposed on the upper substrate 30 and the lower substrate 40, and the viewing angle upper electrode 202 is on the upper surface.
  • the center of the projection of the substrate 30 coincides with the center of the projection of the upper substrate 30 at the viewing angle, and the upper electrode 202 is symmetric with respect to the center line of the sub-pixel region 20, and the two subsidiary electrodes 206 are disposed on the lower substrate 40.
  • located at both sides of the electrode 204 at the viewing angle and the two accessory electrodes 206 are equidistant from the ends of the electrode 204 at a viewing angle.
  • the pixel electrode 102, the common electrode 104, the viewing angle upper electrode 202, the viewing angle lower electrode 204, and the auxiliary electrode 206 are all made of a transparent conductive material, and the material does not affect the backlight to penetrate the liquid crystal panel to display an image.
  • the auxiliary electrode 206 has the same shape and shape as the pixel electrode 102 and the common electrode 104. At this time, the three electrodes can be fabricated together in the same process, which reduces the manufacturing process and reduces the production cost.
  • the outermost liquid crystal molecules 50 are affected by the oblique electric field, and are rotated counterclockwise from the flat state to a state parallel to the oblique electric field line 64, which is vertical.
  • the common influence of the electric field drives the liquid crystal molecules 50 adjacent to each other to be sequentially erected in the same direction.
  • the backlight passes through the gap between the liquid crystal molecules 50, Light leakage occurs in the pixel region 20, only the main pixel region 10 displays an image, and the liquid crystal panel has a narrow viewing angle display mode.
  • An oblique electric field is generated between the two ends of the electrode 202 and the two ends of the electrode 204 and the auxiliary electrode 206.
  • the oblique electric field causes the liquid crystal molecules 50 located at both ends of the sub-pixel region 20 to be subjected to an oblique electric field.
  • the direction is rotated, and the liquid crystal molecules 50 are gradually led to stand up from the same end in an orderly manner, thereby avoiding the "fighting" phenomenon of the liquid crystal molecules 50 during the conversion process of the wide viewing angle display mode and the narrow viewing angle display mode, and shortening the viewing angle.
  • the response time is converted, and the viewing angle symmetry after the switching of the angle of view is improved.
  • the common influence drives the liquid crystal molecules 50 next to them in order along the same direction, when the image is After all the liquid crystal molecules 50 of the prime region 20 reach a flat state, the backlight passes through the liquid crystal molecules 50 of the sub-pixel region 20 to display an image, and the sub-pixel region 20 works together with the main pixel region 10, and the liquid crystal panel displays a wide viewing angle. mode.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种可切换视角的液晶面板，包括相对设置的上基板（30）、下基板（40）及位于上基板（30）与下基板（40）之间的液晶层，上基板（30）面对下基板（40）的表面设有视角上电极（202），下基板（40）面对上基板（30）的表面设有视角下电极（204），视角下电极（204）的长度小于视角上电极（202）的长度，视角上电极（202）的中心与视角下电极（204）的中心正对，下基板（40）面对上基板（30）的表面还设置有两个与视角上电极（202）相对的附属电极（206），两个附属电极（206）对称分布在视角下电极（204）的两侧，视角上电极（202）完全覆盖附属电极（206）在上基板（30）的投影。还提供了一种液晶显示器，减短了视角转换响应时间，改善了视角切换后的视角对称性。

Description

可切换视角的液晶面板及液晶显示器
本申请要求于2016年6月25日提交中国专利局、申请号为201610479688.5、发明名称为“可切换视角的液晶面板及液晶显示器”的中国专利申请的优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶制造技术领域，尤其涉及一种可切换视角的液晶面板及液晶显示器。
背景技术
随着使用液晶显示器的移动与应用产品的普及和推广，人们对产品的品质与人性化的设计提出了越来越高的要求。可视角范围是液晶显示面板的一个重要的性能指标，液晶显示面板需要通过调节液晶分子的排布来改变光线的偏振状态，进而控制上下偏振层之间的通光量，进而实现显示功能。虽然现在的液晶显示面板已经朝着广视角的发展方向发展，但是在某些情况下液晶显示面板还需要具备广视角与窄视角相互切换的功能。例如有时候，用户需要与他人共享便携式电子设备显示的图像，而有时用户出于对个人隐私的保护又不希望他人看到显示的图像，这就需要有一种能够实现宽、窄视角转换的显示器来同时满足这两种需求。
现有技术中，显示面板的宽视角与窄视角的转换实际上是由液晶分子的水平取向与竖直取向的转换实现的。例如当液晶分子为正性液晶时，视角控制通过控制电极来实现。当给控制电极施加电压时，会产生竖直电场，原本水平取向的液晶受电场力的作用，会逐渐站立起来。但是，由于液晶分子为棒状结构，液晶站立的方向没有固定，液晶可以从其一端开始站立，也可以从其另一端开始站立。因此，在液晶站立的过程中，容易出现“打架”现象，导致无序状态发生，最终导致视角转换响应慢，视角切换后出现视角对称性不佳。
发明内容
本发明要解决的技术问题是现有技术中在切换液晶显示面板宽视角与窄视角的相互转换过程中，由于各液晶分子的转动方向不确定导致的无序状态的发生，并由于液晶分子转动障碍产生的视角转换响应时间长，视角对称性不佳等问题。
为解决上述技术问题，本发明提供一种可切换视角的液晶面板，包括相对设置的上基板、下基板及位于所述上基板与所述下基板之间的液晶层，所述上基板面对所述下基板的表面设有视角上电极，所述下基板面对所述上基板的表面设有视角下电极，所述视角下电极的长度小于所述视角上电极的长度，所述视角上电极的中心与所述视角下电极的中心正对，所述下基板面对所述上基板的表面还设置有两个与所述视角上电极相对的附属电极，两个所述附属电极对称分布在所述视角下电极的两侧，所述视角上电极完全覆盖所述附属电极在所述上基板的投影。
其中，所述下基板面对所述上基板的表面还设有间隔排布的像素电极与公共电极，所述像素电极与所述公共电极位于所述附属电极远离所述视角下电极的一侧，所述视角上电极的长度与所述视角下电极的长度的差值为所述像素电极与所述公共电极之间的距离的四倍。
其中，所述附属电极与所述视角下电极的两端的距离相等于所述像素电极与所述公共电极之间的距离。
其中，所述附属电极、所述像素电极及所述公共电极的形状大小相同。
其中，所述像素电极、所述公共电极、所述视角上电极、所述视角下电极及所述附属电极均由透明导电材料制成。
其中，所述像素电极与所述公共电极之间的所述液晶分子在平行于所述上基板和所述下基板的平面内旋转，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子在垂直于所述上基板和所述下基板的平面内旋转。
其中，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子为未施加电压时初始状态为水平排布的正性液晶。
其中，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子为未施加电压时初始状态为竖直排布的负性液晶。
本发明还提供了一种液晶显示器，所述液晶显示器包括背光模组、驱动电路及可切换视角的液晶面板，所述驱动电路控制所述背光模组和所述液晶面板工作，所述背光模组提供背光源通过所述液晶面板显示图像。
其中，所述可切换视角的液晶面板，包括相对设置的上基板、下基板及位于所述上基板与所述下基板之间的液晶层，所述上基板面对所述下基板的表面设有视角上电极，所述下基板面对所述上基板的表面设有视角下电极，其特征在于，
所述视角下电极的长度小于所述视角上电极的长度，所述视角上电极的中心与所述视角下电极的中心正对，所述下基板面对所述上基板的表面还设置有两个与所述视角上电极相对的附属电极，两个所述附属电极对称分布在所述视角下电极的两侧，所述视角上电极完全覆盖所述附属电极在所述上基板的投影。
其中，所述下基板面对所述上基板的表面还设有间隔排布的像素电极与公共电极，所述像素电极与所述公共电极位于所述附属电极远离所述视角下电极的一侧，所述视角上电极的长度与所述视角下电极的长度的差值为所述像素电极与所述公共电极之间的距离的四倍。
其中，所述附属电极与所述视角下电极的两端的距离相等于所述像素电极与所述公共电极之间的距离。
其中，所述附属电极、所述像素电极及所述公共电极的形状大小相同。
其中，所述像素电极、所述公共电极、所述视角上电极、所述视角下电极及所述附属电极均由透明导电材料制成。
其中，所述驱动电路包括第一显示驱动与第二显示驱动，所述第一显示驱动控制所述像素电极和所述公共电极的电压，所述第二显示驱动控制所述视角上电极、所述视角下电极及所述附属电极的电压。
本发明的有益效果如下：通过控制偏置电压从而改变液晶分子排布状态的方法转换液晶面板的宽视角与窄视角显示模式，满足使用者对液晶显示器的不同使用需求，同时设计视角下电极短于视角上电极，并在视角下电极的两端短于视角上电极的部分设置了两个附属电极，对电极施加偏置电压时，视角上电极两端与视角下电极两端及附属电极之间产生斜向电场，该斜向电场导致位于次像素区两端的液晶分子受到斜向电场的作用首先沿同一个方向转动，并且会 带动旁边液晶分子逐渐从相同的一端有序的站立起来，避免了液晶分子出现“打架”现象，减短了视角转换响应时间，改善了视角切换后的视角对称性。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例一提供的可切换视角的液晶面板结构示意图。
图2为本发明实施例一提供的可切换视角的液晶面板的工作原理图。
图3为本发明实施例一提供的可切换视角的液晶面板的次像素区的液晶转动的原理图。
图4为本发明实施例二提供的可切换视角的液晶面板结构示意图。
图5为本发明实施例二提供的可切换视角的液晶面板的工作原理图。
图6为本发明实施例二提供的可切换视角的液晶面板的次像素区的液晶转动的原理图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通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，都属于本发明保护的范围。
图1为本发明实施例一提供的可切换视角的液晶面板结构示意图，如图所示，可切换视角的液晶面板由包括上基板30、下基板40及它们之间的液晶分子50组成，液晶分子50为正性液晶。液晶面板的像素单元按照排布的电极的不同划分为主像素区10与次像素区20，主像素区10的下基板40上间隔排布像素电极102与公共电极104，主像素区为水平配向，液晶分子50在主像素区只能在平行于上基板30与下基板40的平面上旋转，为平面转换(In-Plane Switching，IPS)工作模式。当不施加电压时，主像素区10的液晶分子50完全不会旋转，由于液 晶面板的前后两个偏振片的偏振方向成90度垂直，显示器背模组提供的背光源穿过后偏振片后未被液晶分子50改变偏振方向，因此无法穿过前偏振片，液晶面板只能显示比较纯的黑色；施加电压后，液晶分子旋转，使水平偏振光转换到垂直偏振光，背光光线便可以通过，改变施加在液晶分子50两侧的电场大小来控制转换偏振光线的多少，达到控制光线的目的。主像素区的IPS工作模式以平面切换的方式来改善视角，利用空间厚度、摩擦强度及横向电场驱动的改变使液晶分子50做最大的平面旋转角度来增加视角，故具有可视角度大的优点，同时在液晶面板的制造上不需额外加补偿膜，视觉显示较佳，颜色细腻等优点。
次像素区20则为包括视角上电极202、视角下电极204及附属电极206的部分，视角上电极202与视角下电极204对应设置在上基板30与下基板40上，视角上电极202在上基板30的投影的中心与视角下电极204在上基板30的投影的中心重合，视角上电极202与视角下电极204关于次像素区20的中心线对称，两个附属电极206设置在下基板40上并位于视角下电极204的两侧且两个附属电极206距离视角下电极204两端的距离相等。像素电极102、公共电极104、视角上电极202、视角下电极204及附属电极206均由透明导电材料制成，该材料不会影响背光源穿透液晶面板显示图像。优选的，附属电极206与像素电极102及公共电极104的大小形状相同，此时该三种电极可以在同一道制程中一起制作完成，减少制作工序，降低生产成本。一种实施方式中，附属电极206与视角下电极204端部的距离等于像素电极102与公共电极104的距离，并且附属电极206在上基板30的投影与视角上电极202在上基板30的投影的端部的距离等于像素电极102与公共电极104的距离，即视角上电极202的一端长于视角下电极204的一端的长度为两倍的像素电极102与公共电极104的距离，并且附属电极206位于该长度的中点位置，该实施方式利于后续对次像素区20施加偏置电压后再次像素区20的两端得到均匀对称的斜向电场。
图2为本发明实施例一提供的可切换视角的液晶面板的工作原理图，如图所示，结合图1，当视角上电极202、视角下电极204及附属电极206未施加偏置电压时，次像素区20的液晶分子50为平躺状态，背光源穿过次像素区20的液晶分子50显示图像，次像素区20与主像素区10共同工作，此时液晶面板为宽视角 显示模式；对视角上电极202、视角下电极204及附属电极206施加偏置电压后，附属电极206、视角下电极204的两端与视角上电极202两端之间产生斜向电场，次像素区20两端的液晶分子50受到斜向电场的作用率先沿着平行于斜向电场线64的方向转动站立起来，并带动其旁边的液晶分子50依次有序的沿同一端转动站立起来，最终液晶分子50均达到平行于竖直电场线62的竖直状态。结合图3，以次像素区20右端的液晶分子为例，最外侧的液晶分子50受到斜向电场影响，由平躺状态逆时针转动到平行于斜向电场线64的状态，其与竖直电场的共同影响带动旁边的液晶分子50依次沿同一个方向有序的竖立起来，当次像素区20的所有液晶分子50均达到竖立状态后，背光源穿过液晶分子50之间的间隙，次像素区20发生漏光，仅主像素区10显示图像，液晶面板为窄视角显示模式。
通过视角上电极202两端与视角下电极204两端及附属电极206之间产生斜向电场，该斜向电场导致位于次像素区20两端的液晶分子50受到斜向电场的作用首先沿同一个方向转动，并且会带动旁边液晶分子50逐渐从相同的一端有序的站立起来，在宽视角显示模式与窄视角显示模式的转换过程中避免了液晶分子50出现“打架”现象，减短了视角转换响应时间，改善了视角切换后的视角对称性。
图4为本发明实施例二提供的可切换视角的液晶面板结构示意图，如图所示，主像素区10与实施例一的结构及工作原理相同，其区别在于，液晶分子50为负性液晶，结合图5，当视角上电极202、视角下电极204及附属电极206未施加偏置电压时，次像素区20的液晶分子50为竖立状态，背光源穿过液晶分子50之间的间隙，次像素区20发生漏光，仅主像素区10显示图像，液晶面板为窄视角显示模式；对视角上电极202、视角下电极204及附属电极206施加偏置电压后，附属电极206、视角下电极204的两端与视角上电极202两端之间产生斜向电场，次像素区20两端的液晶分子50受到斜向电场的作用率先沿着垂直于斜向电场线64的方向转动平躺下来，并带动其旁边的液晶分子50依次有序的沿同一端转动平躺下来，最终液晶分子50均达到垂直于竖直电场线62的平躺状态。结合图6，以次像素区20右端的液晶分子为例，最外侧的液晶分子50受到斜向电场影响，由竖立状态逆时针转动到垂直于斜向电场线64的状态，其与竖直电场的共同影响带动旁边的液晶分子50依次沿同一个方向有序的平躺下来，当次像 素区20的所有液晶分子50均达到平躺状态后，背光源穿过次像素区20的液晶分子50显示图像，次像素区20与主像素区10共同工作，此时液晶面板为宽视角显示模式。
实施例二提供的液晶面板由于液晶分子50与实施例一的液晶分子50电极性相反，正性液晶受电场作用转动到平行于电场线方向，负性液晶受电场作用转动到垂直于电场线方向，两种实施例虽工作模式相反，但均是通过两端受斜向电场影响的液晶分子50首先转动再带动旁边的液晶分子50按照相同的方向逐渐有序转动，避免了液晶分子50出现“打架”现象，减短了视角转换响应时间，改善了视角切换后的视角对称性。
液晶显示器包括背光模组、驱动电路及可切换视角的液晶面板，驱动电路控制背光模组和液晶面板工作，驱动电路包括第一显示驱动与第二显示驱动，第一显示驱动控制主像素区10的像素电极102和公共电极104的电压，第二显示驱动控制次像素区20的视角上电极202、视角下电极204及附属电极206的电压。第一显示驱动控制施加偏置电压于像素电极102和公共电极104，偏置电压使主像素区10的液晶分子50在平行于上基板30与下基板40的平面旋转，控制主像素区10通过背光源显示图像；第二显示驱动控制施加偏置电压于视角上电极202、视角下电极204及附属电极206，次像素区20的液晶分子50在垂直于上基板30与下基板40的平面转动，使次像素区20在宽视角显示模式与窄视角显示模式间切换。由于液晶面板的次像素区20利用斜向电场使两端的液晶分子50先转动再带动旁边的液晶分子50逐渐有序的转动，使该液晶显示器满足使用者对液晶显示器的不同使用需求的同时，视角转换时间短，视角对称性好。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易的想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (18)

  1. 一种可切换视角的液晶面板，包括相对设置的上基板、下基板及位于所述上基板与所述下基板之间的液晶层，所述上基板面对所述下基板的表面设有视角上电极，所述下基板面对所述上基板的表面设有视角下电极，其中，
    所述视角下电极的长度小于所述视角上电极的长度，所述视角上电极的中心与所述视角下电极的中心正对，所述下基板面对所述上基板的表面还设置有两个与所述视角上电极相对的附属电极，两个所述附属电极对称分布在所述视角下电极的两侧，所述视角上电极完全覆盖所述附属电极在所述上基板的投影。
  2. 根据权利要求1所述的可切换视角的液晶面板，其中，所述下基板面对所述上基板的表面还设有间隔排布的像素电极与公共电极，所述像素电极与所述公共电极位于所述附属电极远离所述视角下电极的一侧，所述视角上电极的长度与所述视角下电极的长度的差值为所述像素电极与所述公共电极之间的距离的四倍。
  3. 根据权利要求2所述的可切换视角的液晶面板，其中，所述附属电极与所述视角下电极的两端的距离相等于所述像素电极与所述公共电极之间的距离。
  4. 根据权利要求3所述的可切换视角的液晶面板，其中，所述附属电极、所述像素电极及所述公共电极的形状大小相同。
  5. 根据权利要求4所述的可切换视角的液晶面板，其中，所述像素电极、所述公共电极、所述视角上电极、所述视角下电极及所述附属电极均由透明导电材料制成。
  6. 根据权利要求2所述的可切换视角的液晶面板，其中，所述像素电极与所述公共电极之间的所述液晶分子在平行于所述上基板和所述下基板的平面内旋转，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子在垂直于所述上基板和所述下基板的平面内旋转。
  7. 根据权利要求2所述的可切换视角的液晶面板，其中，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子为未施加电压时初始状态为水平排布的正性液晶。
  8. 根据权利要求2所述的可切换视角的液晶面板，其中，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子为未施加电压时初始状态为竖直排布的负性液晶。
  9. 一种液晶显示器，其中，所述液晶显示器包括背光模组、驱动电路及可切换视角的液晶面板，所述驱动电路控制所述背光模组和所述液晶面板工作，所述背光模组提供背光源通过所述液晶面板显示图像。
  10. 根据权利要求9所述的液晶显示器，其中，所述可切换视角的液晶面板，包括相对设置的上基板、下基板及位于所述上基板与所述下基板之间的液晶层，所述上基板面对所述下基板的表面设有视角上电极，所述下基板面对所述上基板的表面设有视角下电极，其特征在于，
    所述视角下电极的长度小于所述视角上电极的长度，所述视角上电极的中心与所述视角下电极的中心正对，所述下基板面对所述上基板的表面还设置有两个与所述视角上电极相对的附属电极，两个所述附属电极对称分布在所述视角下电极的两侧，所述视角上电极完全覆盖所述附属电极在所述上基板的投影。
  11. 根据权利要求10所述的可切换视角的液晶面板，其中，所述下基板面对所述上基板的表面还设有间隔排布的像素电极与公共电极，所述像素电极与所述公共电极位于所述附属电极远离所述视角下电极的一侧，所述视角上电极的长度与所述视角下电极的长度的差值为所述像素电极与所述公共电极之间的距离的四倍。
  12. 根据权利要求11所述的可切换视角的液晶面板，其中，所述附属电极与所述视角下电极的两端的距离相等于所述像素电极与所述公共电极之间的距离。
  13. 根据权利要求12所述的可切换视角的液晶面板，其中，所述附属电极、所述像素电极及所述公共电极的形状大小相同。
  14. 根据权利要求13所述的可切换视角的液晶面板，其中，所述像素电极、所述公共电极、所述视角上电极、所述视角下电极及所述附属电极均由透明导电材料制成。
  15. 根据权利要求10所述的可切换视角的液晶面板，其中，所述像素电极与所述公共电极之间的所述液晶分子在平行于所述上基板和所述下基板的平 面内旋转，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子在垂直于所述上基板和所述下基板的平面内旋转。
  16. 根据权利要求10所述的可切换视角的液晶面板，其中，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子为未施加电压时初始状态为水平排布的正性液晶。
  17. 根据权利要求10所述的可切换视角的液晶面板，其中，所述视角上电极与所述视角下电极、所述附属电极之间的所述液晶分子为未施加电压时初始状态为竖直排布的负性液晶。
  18. 根据权利要求9所述的液晶显示器，其中，所述驱动电路包括第一显示驱动与第二显示驱动，所述第一显示驱动控制所述像素电极和所述公共电极的电压，所述第二显示驱动控制所述视角上电极、所述视角下电极及所述附属电极的电压。
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