WO2018120301A1 - 一种透明液晶显示面板及包含其的显示器 - Google Patents

一种透明液晶显示面板及包含其的显示器 Download PDF

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WO2018120301A1
WO2018120301A1 PCT/CN2017/071142 CN2017071142W WO2018120301A1 WO 2018120301 A1 WO2018120301 A1 WO 2018120301A1 CN 2017071142 W CN2017071142 W CN 2017071142W WO 2018120301 A1 WO2018120301 A1 WO 2018120301A1
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pixel
polarizing structure
liquid crystal
transparent
crystal display
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PCT/CN2017/071142
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English (en)
French (fr)
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陈黎暄
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深圳市华星光电技术有限公司
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Priority to US15/329,362 priority Critical patent/US20180341149A1/en
Publication of WO2018120301A1 publication Critical patent/WO2018120301A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133536—Reflective polarizers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133538—Polarisers with spatial distribution of the polarisation direction
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133548—Wire-grid polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
    • G02F2201/305—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating diffraction grating

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a transparent liquid crystal display panel and a display including the same.
  • a transparent display panel refers to a display device that can provide a transparent display state so that a viewer can see a scene behind it. It is common for a window or a vending machine to display a display image before displaying a physical item, and is also applicable to a small display.
  • the display device is placed on the glass.
  • transparent display panels mainly include transparent displays based on LCD, OLED and PDP technologies.
  • the pixel structure is divided into two regions of a display region and a transparent region; a transparent light guide plate and a liquid crystal material having a scattering/transmission state at different voltages such as PDLC/PNLC are employed. .
  • the above technologies are all applied to transparent liquid crystal displays, in which the pixel structure is distinguished, the display area can provide a display panel for the viewer to view, and the transparent area is transparent so that the viewer can see the perspective to see the rear side. scene.
  • the grating period of the sub-wavelength grating is much smaller than the wavelength of the incident light. There are only zero-order diffracted waves, and the high-order diffracted waves are evanescent waves. Therefore, the unique diffraction characteristics of the sub-wavelength grating can realize the special functions that many conventional optical devices cannot achieve. . Because sub-wavelength gratings have excellent optical diffraction characteristics, they are widely used in many fields such as optical sensing, optical integration and optical holography.
  • the polarization characteristics of sub-wavelength gratings are determined by the grating material and its structure.
  • the structural parameters of the grating mainly include grating width, grating depth and grating period. According to the influence of different grating materials, grating surface patterns and grating structure parameters on TM polarization transmittance and transmission extinction ratio, the corresponding sub-wavelength grating polarizers can be designed.
  • the grating period is much smaller than the incident light wavelength (such as visible light wavelength) At 400-800 nm), the grating can almost completely reflect the light of the electric field vector component vibrating in parallel with the grating, and the light of the electric field vector component perpendicular to the grating is almost completely transmitted, and the smaller the grating period, the better the polarization effect.
  • the larger the period the lower the transmittance of the short wavelength. Therefore, the sub-wavelength grating polarizer can be applied to a liquid crystal display to replace the conventional polymer film type polarizing plate with high transmittance and high reliability.
  • the patent application CN201610518383.0 discloses a sub-wavelength grating polarizer and a manufacturing method thereof. It is known from the patent that a sub-wavelength grating polarizing structure is applied to a display device instead of an ordinary polarizer. Good display effect.
  • the transparent area (T) when the transparent area (T) is controlled by a separate pixel signal voltage, there are at least four sets of control signal output pixel signal voltages (R+G+B+T) for the entire pixel, when the transparent area (T) When it is designed separately next to the R/G/B sub-pixel, the pixel signal voltage of the control signal output is as high as 6 groups (R+T(R)+G+T(G)+B+T(B)).
  • the display area and the transparent area are controlled by independent pixel signal voltages to control the image effect in real time.
  • the increased pixel signal voltage control leads to the following defects: 1.
  • the aperture ratio of the entire panel is decreased; 2.
  • the signal output is increased; 3.
  • the complexity of the system is improved;
  • the invention has the advantages that the transmittance of the transparent liquid crystal display is adjustable, the number of pixel signal voltage control is reduced, and the manufacturing complexity is reduced.
  • the invention provides a transparent liquid crystal display panel, which comprises an upper substrate and a lower substrate,
  • the pixel structure includes a display area and a transparent area
  • a grating strip direction of the upper polarizing structure corresponding to the display region and a grating strip direction of the lower polarizing structure are perpendicular to each other; a grating strip direction of the upper polarizing structure corresponding to the transparent region and a lower polarizing structure
  • the grid bars are parallel to each other.
  • the transparent liquid crystal display panel includes a first signal for controlling the transparent region and a second signal for controlling the display region or includes simultaneously controlling the display region and the transparent The first signal of the area.
  • the present invention also provides a display, wherein the display comprises a transparent liquid crystal display panel, the transparent liquid crystal display panel includes an upper substrate and a lower substrate, and the upper substrate includes a pixel structure and an upper polarizing structure in order from bottom to top,
  • the substrate includes a lower polarizing structure;
  • the pixel structure includes a display area and a transparent area;
  • a gate strip direction of the upper polarizing structure corresponding to the display area and a strip direction of the lower polarizing structure are perpendicular to each other;
  • the grating strip direction of the upper polarizing structure of the transparent region and the grating strip direction of the lower polarizing structure are parallel to each other.
  • the grating depth is between 1:1 and 6:1.
  • the invention has the advantages that the aperture ratio of the entire transparent liquid crystal display panel can be improved, the signal output is reduced, and the complexity of the system is reduced; at the same time, the transmittance of the transparent liquid crystal display is adjustable, and the pixel signal voltage control is reduced.

Abstract

一种透明液晶显示面板，包括上基板和下基板，上基板从下至上依次包括像素结构和上偏光结构（3），下基板包括下偏光结构（4）；像素结构包括显示区域（1）和透明区域（2）；对应显示区域（1）的上偏光结构（3）的栅条方向与下偏光结构（4）的栅条方向相互垂直；对应透明区域（2）的上偏光结构（3）的栅条方向与下偏光结构（4）的栅条方向相互平行。透明液晶显示器的透过率可调，减少了像素信号电压控制，降低制造复杂度。

Description

一种透明液晶显示面板及包含其的显示器
相关申请的交叉引用
本申请要求享有于2016年12月26日提交的名称为“一种透明液晶显示面板及包含其的显示器”的中国专利申请CN201611217143.3的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及液晶显示领域，特别地涉及一种透明液晶显示面板及包含其的显示器。
背景技术
透明显示面板指一种可提供透明显示状态以使观看者可看到位于其后方景象的显示装置，常见于橱窗或自动贩卖机等需于展示实体物品前呈现显示画面的功用，也应用于小型化显示设备于玻璃上。目前透明显示面板主要包括基于LCD、OLED和PDP技术的透明显示器。对于基于液晶显示技术的透明显示器，包括将像素结构分为显示区域与透明区域两个区域；采用透明导光板以及采用PDLC/PNLC等在不同电压下存在散射/透射两种状态的液晶材料的技术。上述技术均有应用于透明液晶显示器中，其中像素结构区分的技术，显示区域可以提供显示面板供观看者观看，而透明区域则为透明状态使得观看者可看到透视以观看到位于其后方的景象。
亚波长光栅的光栅周期远小于入射光波长，只存在零级衍射波，高阶衍射波均为消逝波，因此利用亚波长光栅这种独特的衍射特性可以实现许多传统光学器件无法实现的特殊功能。由于亚波长光栅具有极好的光学衍射特性，它在光传感、光集成和光全息技术等多个学科领域中有着广泛应用。
亚波长光栅的偏光特性是由光栅材料及其结构决定的，光栅的结构参数主要包括光栅宽度、光栅深度及光栅周期等。根据不同光栅材料、光栅面型及光栅结构参数对TM偏振透射率及透射消光比的影响,可以设计对应的亚波长光栅偏光片。在光栅周期的足够小，尤其是周期远小于入射光波长(如可见光波长 400-800nm)时，则光栅能够几乎全部反射与光栅平行振动的电场矢量分量的光，而使垂直于光栅的电场矢量分量的光线几乎全部透过，而且光栅周期越小,偏振效果越好,周期越大,短波长的透过率越低。因此亚波长光栅偏光片可以应用在液晶显示器中，以其高透过率和高信赖性取代传统的高分子薄膜型偏光板。
同时，申请号为CN201610518383.0的专利公开了一种亚波长光栅偏光片及其制作方法，由此专利得知，将亚波长光栅偏光结构应用于显示设备之中取代普通的偏光片可以得到较好的显示效果。
对于现行的透明显示设计，当透明区域(T)受到单独的像素信号电压控制时，整个像素至少存在4组控制信号输出的像素信号电压(R+G+B+T)，当透明区域(T)被单独设计在R/G/B子像素旁时，控制信号输出的像素信号电压甚至多达6组(R+T(R)+G+T(G)+B+T(B))。
显示区域和透明区域分别采用独立的像素信号电压控制，以实时控制画面影像效果。但是增加的像素信号电压控制会导致以下缺陷：1.整个面板的开口率下降；2.增加信号输出；3.提高系统的复杂度；
为解决上述问题，需要提出一种新的透明液晶显示面板。
发明内容
本发明的优点为透明液晶显示器的透过率可调，减少像素信号电压控制数量，降低制造复杂程度。
本发明提供了一种透明液晶显示面板，其中，包括上基板和下基板，
所述上基板从下至上依次包括像素结构和上偏光结构，所述下基板包括下偏光结构；
所述像素结构包括显示区域和透明区域；
对应所述显示区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互垂直；对应所述透明区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互平行。
如上所述的透明液晶显示面板，其中，所述显示区域和所述透明区域交错排列。
如上所述的透明液晶显示面板，其中，所述显示区域从左至右依次包括红子像素、绿子像素和蓝子像素。
如上所述的透明液晶显示面板，其中，所述上偏光结构和所述下偏光结构均为亚波长光栅。
如上所述的透明液晶显示面板，其中，所述上偏光结构和所述下偏光结构可设于柔性衬底或玻璃上。
如上所述的透明液晶显示面板，其中，在所述上偏光结构和所述下偏光结构中，光栅深度:光栅周期为1:1至6:1之间。
如上所述的透明液晶显示面板，其中，所述光栅深度为100nm至350nm之间，所述光栅周期＜300nm。
如上所述的透明液晶显示面板，其中，所述透明液晶显示面板包括控制所述透明区域的第一信号和控制所述显示区域的第二信号或包括可同时控制所述显示区域和所述透明区域的第一信号。
如上所述的透明液晶显示面板，其中，所述第一信号电压为所述红子像素、绿子像素或蓝子像素信号的电压的最大值或所述红子像素、绿子像素和蓝子像素信号电压的平均值。
本发明还提供了一种显示器，其中，所述显示器包含透明液晶显示面板，所述透明液晶显示面板包括上基板和下基板，所述上基板从下至上依次包括像素结构和上偏光结构，所述下基板包括下偏光结构；所述像素结构包括显示区域和透明区域；对应所述显示区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互垂直；对应所述透明区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互平行。
如上所述的显示器，其中，所述显示区域和所述透明区域交错排列。
如上所述的显示器，其中，所述显示区域和所述透明区域交错排列。
如上所述的显示器，其中，所述显示区域从左至右依次包括红子像素、绿子像素和蓝子像素。
如上所述的显示器，其中，所述上偏光结构和所述下偏光结构均为亚波长光栅。
如上所述的显示器，其中，在所述上偏光结构和所述下偏光结构中，光栅深度:光栅周期为1:1至6:1之间。
如上所述的显示器，其中，所述光栅深度为100nm至350nm之间，所述光栅周期＜300nm。
本发明的优点在于，可提高整个透明液晶显示面板的开口率，减少信号输出，降低了系统的复杂度；同时，使得透明液晶显示器的透过率可调，减少了像素信号电压控制。
上述技术特征可以各种适合的方式组合或由等效的技术特征来替代，只要能够达到本发明的目的。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1为本发明中透明液晶显示面板结构示意图；
图2为本发明中上偏光结构俯视图；
图3为本发明中下偏光结构仰视图；
图4为本发明的上偏光结构立体图；
图5为本发明的下偏光结构立体图；
图6为本发明的优选实施例中上偏光结构和下偏光结构的亚波长金属光栅结构示意图；
图7为常黑模式下，本发明中上偏光结构的亚波长光栅俯视图；
图8为常黑模式下，本发明中下偏光结构的亚波长光栅仰视图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例。
具体实施方式
下面将结合附图对本发明作进一步说明。
为了使得透明液晶显示器的透过率可调，减少像素信号电压控制数量，降低制造复杂程度，本发明提出了一种透明液晶显示器。
本发明提供了一种透明液晶显示面板，由图1可知，包括上基板和下基板，上基板包括像素结构及上偏光结构3，其中红子像素、绿子像素和蓝子像素及空白像素位置这一整体构成了一个像素单元，本发明的液晶显示面板的像素结构由多个上述像素单元构成，所述下基板包括下偏光结构4。其中上基板的像素结构包括显示区域1和透明区域2，显示区域1和透明区域2的宽度比例并不固定，但在结构上是交错排列的。
看图4和图5，上基板的上偏光结构3和下基板的下偏光结构4可以制作于 PET等柔性衬底(玻璃)5上，制作在柔性衬底5上类似于普通偏光片进行贴附，制作在玻璃5上为单独制备。
结合图6进一步说明上偏光结构3和下偏光结构4，本发明的上偏光结构3和下偏光结构4选用的是亚波长光栅，优选实施例中选用亚波长金属光栅，其中光栅深度H和光栅周期W之比在1:1至6:1之间，光栅深度H在100nm至350nm之间，光栅周期W小于300nm。
进一步结合图2和图3，上基板的显示区域1对应上偏光结构3的栅条1’,上基板的透明区域2对应上偏光结构3的栅条2’。上偏光结构3存在不同的栅条方向，即栅条1’和栅条2’的方向不相同。看图7和图8，栅条1’与下偏光结构4的栅条方向相互垂直；栅条2’与下偏光结构4的栅条方向相互平行。当采用常黑模式液晶，由于栅条1’与下偏光结构4的栅条方向相互垂直，使得入射光在没有电压驱动时，在红子像素、绿子像素和蓝子像素的像素区域不透光，因此为黑画面。而栅条2’与下偏光结构4的栅条方向相互平行，使得没有电压驱动时，光线也可以透过透明区域2。
通过上述设计，使得透明显示器的透明区域2的透过率随着对应位置液晶驱动电压的增大，反而透过率逐渐降低，从而使得在较暗画面位置，透明显示器展现良好的透明效果，而在较亮的画面区域，呈现出低透明度和高的色彩饱和度。
透明区域1的像素信号控制，可以单独设置，也可以共用红子像素、绿子像素和蓝子像素的信号。透明区域1的像素信号电压为红子像素、绿子像素或蓝子像素电压的最大值或红子像素、绿子像素和蓝子像素电压的平均值。
本发明还提供一种透明液晶显示器，其中，包含上述特征的透明液晶显示面板。
本发明的优点在于，可提高整个透明液晶显示面板的开口率，减少信号输出，降低了系统的复杂度，最关键的是本发明使得透明液晶显示器的透过率可调，减少了像素信号电压控制。
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (16)

  1. 一种透明液晶显示面板，其中，包括上基板和下基板，
    所述上基板从下至上依次包括像素结构和上偏光结构，所述下基板包括下偏光结构；
    所述像素结构包括显示区域和透明区域；
    对应所述显示区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互垂直；对应所述透明区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互平行。
  2. 根据权利要求1所述的透明液晶显示面板，其中，所述显示区域和所述透明区域交错排列。
  3. 根据权利要求1所述的透明液晶显示面板，其中，所述显示区域从左至右依次包括红子像素、绿子像素和蓝子像素。
  4. 根据权利要求1所述的透明液晶显示面板，其中，所述上偏光结构和所述下偏光结构均为亚波长光栅。
  5. 根据权利要求4所述的透明液晶显示面板，其中，所述上偏光结构和所述下偏光结构可设于柔性衬底或玻璃上。
  6. 根据权利要求5所述的透明液晶显示面板，其中，在所述上偏光结构和所述下偏光结构中，光栅深度:光栅周期为1:1至6:1之间。
  7. 根据权利要求6所述的透明液晶显示面板，其中，所述光栅深度为100nm至350nm之间，所述光栅周期＜300nm。
  8. 根据权利要求1所述的透明液晶显示面板，其中，所述透明液晶显示面板包括控制所述透明区域的第一信号和控制所述显示区域的第二信号或包括可同时控制所述显示区域和所述透明区域的第一信号。
  9. 根据权利要求8所述的透明液晶显示面板，其中，所述第一信号电压为所述红子像素、绿子像素或蓝子像素信号的电压的最大值或所述红子像素、绿子像素和蓝子像素信号电压的平均值。
  10. 一种显示器，其中，所述显示器包含透明液晶显示面板，所述透明液晶显示面板包括上基板和下基板，所述上基板从下至上依次包括像素结构和上偏光结构，所述下基板包括下偏光结构；所述像素结构包括显示区域和透明区域；对 应所述显示区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互垂直；对应所述透明区域的所述上偏光结构的栅条方向与所述下偏光结构的栅条方向相互平行。
  11. 根据权利要求10所述的显示器，其中，所述显示区域和所述透明区域交错排列。
  12. 根据权利要求11所述的显示器，其中，所述显示区域和所述透明区域交错排列。
  13. 根据权利要求10所述的显示器，其中，所述显示区域从左至右依次包括红子像素、绿子像素和蓝子像素。
  14. 根据权利要求10所述的显示器，其中，所述上偏光结构和所述下偏光结构均为亚波长光栅。
  15. 根据权利要求14所述的显示器，其中，在所述上偏光结构和所述下偏光结构中，光栅深度:光栅周期为1:1至6:1之间。
  16. 根据权利要求15所述的显示器，其中，所述光栅深度为100nm至350nm之间，所述光栅周期＜300nm。
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