WO2012174774A1 - 显示面板及其应用的显示装置 - Google Patents

显示面板及其应用的显示装置 Download PDF

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Publication number
WO2012174774A1
WO2012174774A1 PCT/CN2011/077983 CN2011077983W WO2012174774A1 WO 2012174774 A1 WO2012174774 A1 WO 2012174774A1 CN 2011077983 W CN2011077983 W CN 2011077983W WO 2012174774 A1 WO2012174774 A1 WO 2012174774A1
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WIPO (PCT)
Prior art keywords
phase difference
wavelength phase
substrate
display panel
polarizer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/077983
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English (en)
French (fr)
Inventor
萧嘉强
陈峙彣
贺成明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/377,140 priority Critical patent/US8638410B2/en
Publication of WO2012174774A1 publication Critical patent/WO2012174774A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/02—Number of plates being 2
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/07—All plates on one side of the LC cell

Definitions

  • the present invention relates to a display panel and a display device therefor, and more particularly to a display panel for displaying a three-dimensional image 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 display panel and a backlight module (backlight Module).
  • liquid crystal displays can have stereoscopic image display functions, such as graphical phase retardation film three-dimensional displays (three dimensions)
  • a pattern retarder display includes a quarter-wave phase retarder disposed outside the liquid crystal display.
  • a patterned phase retardation film three-dimensional display uses a pixel of its odd column (or even column) as a left eye pixel (left image). Pixels), while other series of pixels are used as right eye pixels (right image Pixels), when the light of the liquid crystal display passes through differently aligned quarter-wave phase retarders, the light will form left circularly polarized light and right circularly polarized light, respectively. Users can match round polarized glasses with different polarization directions (circular The polarizer glasses enable the left eye of the user to see only the image displayed by the left eye pixel, while the right eye can only see the image displayed by the right eye pixel, thereby achieving the effect of the three-dimensional image.
  • phase retarder of the conventional patterned phase retardation film three-dimensional display cannot perform dispersion compensation for the left and right paths at the same time, and image crosstalk is easily generated.
  • the invention provides a display panel and a display device thereof for solving the problem of dispersion of a three-dimensional display.
  • a main object of the present invention is to provide a display panel, the display panel comprising:
  • a first polarizer disposed on an outer side of the first substrate
  • a second polarizer disposed on an outer side of the second substrate
  • the one-half wavelength phase difference plate includes at least two first half-wavelength phase difference unit columns, adjacent to the a predetermined pitch between the first half-wavelength phase difference cell columns;
  • a quarter-wavelength phase difference plate is disposed on the one-half wavelength phase difference plate.
  • Another object of the present invention is to provide a display panel, the display panel comprising:
  • a first polarizer disposed on an outer side of the first substrate
  • a second polarizer disposed on an outer side of the second substrate
  • the one-half wavelength phase difference plate comprises at least two first half-wave phase difference unit columns and a second half-division a wavelength phase difference unit column having a predetermined spacing between adjacent ones of the first half wavelength phase difference unit columns, the second half wavelength phase difference unit column and the first two One-wavelength phase difference unit column is staggered on different layer structures;
  • phase difference plate disposed on the one-half wavelength phase difference plate
  • a protective substrate disposed on the quarter-wavelength phase difference plate.
  • Another object of the present invention is to provide a display device, the display device comprising:
  • Display panel including:
  • a first polarizer disposed on an outer side of the first substrate
  • a second polarizer disposed on an outer side of the second substrate
  • the one-half wavelength phase difference plate includes at least two first half-wavelength phase difference unit columns, adjacent to the a predetermined pitch between the first half-wavelength phase difference cell columns;
  • a quarter-wavelength phase difference plate is disposed on the one-half wavelength phase difference plate.
  • the display panel further includes a protective substrate disposed on the quarter-wavelength phase difference plate.
  • the one-half wavelength phase difference plate further includes an isotropic material unit column, the first half-wavelength phase difference unit column and the isotropic material unit column. It is staggered.
  • an angle between an optical axis of the quarter-wave phase difference plate and a transmission axis of the first polarizer is 45 degrees
  • the half-wavelength phase difference unit The angle between the column and the transmission axis of the first polarizer is - ⁇ , and conforms to the following formula:
  • the one-half wavelength phase difference plate further includes a second half-wavelength phase difference unit column, and the first half-wavelength phase difference unit column and the first The two-half-wavelength phase difference cell columns are staggered.
  • the first half-wavelength phase difference cell column and the second one-half wavelength phase difference cell column are staggered on the same layer structure.
  • the first half-wavelength phase difference cell column and the second one-half wavelength phase difference cell column are staggered on different layer structures.
  • the one-half wavelength phase difference plate further includes an isotropic material unit column, and the isotropic material unit column is interposed in the first half-wavelength phase difference.
  • the cell column is between the second half-wavelength phase difference cell column.
  • an angle between an optical axis of the quarter-wavelength phase difference plate and a transmission axis of the first polarizer is ⁇
  • the first half-wavelength phase difference The cell column and the second half-wavelength phase difference cell column respectively have an angle ⁇ 1 and ⁇ 2 with the penetrating axis of the first polarizer, and conform to the following formula:
  • N is an integer.
  • the display panel of the present invention and the display device thereof can realize three-dimensional image by setting a half-wavelength phase difference plate, and can simultaneously perform different pixel columns. Dispersion compensation to improve the dispersion problem of existing three-dimensional displays to improve the image crosstalk problem of the display device and to improve the image quality of the display device.
  • the display panel of the present invention and the display device thereof can realize three-dimensional image by setting a half-wavelength phase difference plate, and can simultaneously perform different pixel columns. Dispersion compensation to improve the dispersion problem of existing three-dimensional displays to improve the image crosstalk problem of the display device and to improve the image quality of the display device.
  • Figure 1 is a partial cross-sectional view showing a first embodiment of a display device of the present invention
  • FIG. 2 is a schematic view showing polarization of light of a first embodiment of the display device of the present invention
  • Figure 3 is a partial cross-sectional view showing a second embodiment of the display device of the present invention.
  • FIG. 4 is a schematic view showing polarization of light of a second embodiment of the display device of the present invention.
  • Figure 5 is a partial cross-sectional view showing a third embodiment of the display device of the present invention.
  • FIG. 1 is a partial cross-sectional view showing a first embodiment of a display device of the present invention.
  • the display device of this embodiment can be used to display a three-dimensional image, and the display device can include the display panel 100 and the backlight module 101.
  • the display panel 100 is disposed relative to the backlight module 101, and the backlight module 101 can be edge-lit (Edge) A backlight module or a Bottom Lighting backlight module to provide backlighting to the display panel 100.
  • the display panel 100 of the present embodiment may include a first substrate 110 , a second substrate 120 , a liquid crystal layer 130 , a first polarizer 140 , a second polarizer 150 , and a half ( 1/2 ) wavelength.
  • the substrate material of the first substrate 110 and the second substrate 120 may be a glass substrate or a flexible plastic substrate.
  • the first substrate 110 is, for example, a color filter (Color). a glass substrate of Filter, CF) or a substrate of other materials
  • the second substrate 120 may be, for example, a Thin Film Transistor (TFT).
  • TFT Thin Film Transistor
  • the liquid crystal layer 130 is formed between the first substrate 110 and the second substrate 120 .
  • the first polarizer 140 is disposed outside the first substrate 110 and opposite to the liquid crystal layer 130 (ie, the first On the light-emitting side of the substrate 110), the second polarizer 150 is disposed on the outer side of the second substrate 120 and on the light-incident side of the liquid crystal layer 130 (that is, the second substrate 120).
  • the half-wavelength phase difference plate 160 is disposed on the first polarizer 140, and the quarter-wave phase difference plate 170 is disposed on the one-half wavelength phase difference plate 160.
  • 180 is disposed on the quarter-wavelength retardation plate 170.
  • the protective substrate 180 is, for example, a protective lens (cover Lens), which is preferably made of a high strength material such as glass, carbon fiber, reinforced plastic or any combination of the above, for protecting and encapsulating the overall structure of the display panel 100.
  • the half-wavelength phase difference plate 160 includes a plurality of first half-wave phase difference unit columns 161 and a plurality of isotropic material cell columns 162, and a first half-wavelength phase difference.
  • the cell column 161 and the isotropic material cell column 162 are staggered so that there is a predetermined pitch (width of the isotropic material cell column 162) between adjacent first half-wavelength phase difference cell columns 161, wherein
  • the half-wavelength phase difference cell array 161 has the characteristics of a general half-wavelength phase difference plate to achieve the effect of converting linearly polarized light into circularly polarized light, and can improve the dispersion problem.
  • FIG. 2 is a schematic diagram of polarization of light of a first embodiment of the display device of the present invention.
  • the optical axis of the quarter-wavelength retardation plate 170 and the transmission axis of the first polarizer 140 are at an angle of 45 (the error may be ⁇ 15).
  • the angle between the half-wavelength phase difference cell array 161 of the one-half wavelength phase difference plate 160 and the transmission axis of the first polarizer 140 is - ⁇ (the error can be ⁇ 15°), and conforms to the following formula ( 1):
  • ⁇ is 135 degrees. Therefore, by the above formula (1), it is possible to ensure a good optical effect between the wavelength retardation plates 160 and 170, thereby ensuring a stereoscopic image effect.
  • the light emitted by the first polarizer 140 is 90 degrees of linearly polarized light, and after passing through the isotropic material unit array 162, the light is still 90 degrees of linearly polarized light, and then passes through the optical axis.
  • the 45 degree quarter-wave phase difference plate 170 forms left-handed circularly polarized light.
  • the 90-degree linearly polarized light passes through the half-wavelength phase difference cell array 161 with an optical axis angle of 135 degrees, and the light is still linearly polarized, but its polarization direction is turned to 270 degrees, and then The light will form a right-hand circularly polarized light after passing through the 45-degree quarter-wave phase difference plate 170.
  • the polarizing glasses can be used. Glasses (Polarizer) 102 to form a stereoscopic image effect.
  • the polarizing glasses 102 may have a polarizer 103, a first quarter-wave phase difference plate 104, and a second quarter-wave phase difference plate 105.
  • the polarizer 103 is close to the user's eyes, and the first quarter-wave phase difference plate 104 and the second quarter-wave phase difference plate 105 are formed on the polarizer 103. Up, and close to the display panel 100.
  • the first quarter-wave phase difference plate 104 and the second quarter-wave phase difference plate 105 are respectively located on the left and right lenses of the polarized glasses 102.
  • the transmission axis of the polarizing plate 103 of the polarizing glasses 102 is 0 degrees, and the optical axis of the first quarter-wave phase difference plate 104 is 45 degrees, the left-hand circularly polarized light can be allowed to penetrate. , while the right hand circularly polarized light will be absorbed.
  • the optical axis of the second quarter-wave phase difference plate 105 is 135 degrees, the right-hand circularly polarized light can be allowed to pass and the left-hand circularly polarized light can be absorbed.
  • the right-hand circularly polarized light formed by the one-half wavelength phase difference cell array 161 and the quarter-wave phase difference plate 170 can only penetrate the polarized glasses 102.
  • One side (right or left side) lens (corresponding to the second quarter-wave retardation film 105), and the left hand formed by the isotropic material unit column 162 and the quarter-wave phase difference plate 170 The circularly polarized light can only penetrate the other side lens of the polarizing glasses 102 (corresponding to the first quarter-wave retardation film 104).
  • the eyes of the user can respectively see images of different pixel columns of the display panel 100, and can form a stereoscopic image effect.
  • the three-dimensional image can be realized by setting a half-wavelength phase difference plate, and the dispersion compensation of different pixel columns can be simultaneously performed to improve the existing
  • the pattern phase retardation film three-dimensional display has a dispersion problem only when it has a single quarter-wave phase difference plate, thereby improving the image crosstalk problem of the display device.
  • FIG. 3 is a partial cross-sectional view showing a second embodiment of the display device of the present invention.
  • the display panel 200 of the second embodiment may include a first substrate 210, a second substrate 220, a liquid crystal layer 230, a first polarizer 240, a second polarizer 250, a half-wave phase difference plate 260, and a quarter.
  • the half-wavelength phase difference plate 260 includes a plurality of first half-wavelength phase difference cell columns 261 and a plurality of second half-wave phase difference cell columns 262, and a half-wavelength phase difference cell column 261.
  • And 262 are staggered on the same layer structure to respectively perform phase delay and dispersion compensation on different pixel columns.
  • FIG. 4 is a schematic diagram of light polarization of a second embodiment of the display device of the present invention.
  • the angle between the optical axis of the quarter-wavelength retardation plate 270 and the transmission axis of the first polarizer 240 is ⁇ (The error can be ⁇ 15°).
  • the angle between the half-wavelength phase difference cell columns 261 and 262 of the one-half wavelength phase difference plate 260 and the transmission axis of the first polarizer 240 is ⁇ 1 (clockwise direction) and ⁇ 2 (counterclockwise direction), respectively.
  • the error can be ⁇ 15°
  • ⁇ is 90 degrees
  • ⁇ 1 is 22.5 degrees
  • ⁇ 2 is 22.5 degrees. Therefore, by the above formulas (2) and (3), it is possible to ensure a good optical effect between the wavelength retardation plates 260 and 270, and to secure a stereoscopic image effect.
  • the light emitted by the first polarizer 240 is linearly polarized light of 90 degrees, and the light passes through the half-wavelength retardation unit column 261 having an optical axis of 67.5 degrees. It will become 45-degree linearly polarized light, and then pass through a quarter-wave phase retardation plate 270 whose optical axis is 0 degrees, and the light will form left-hand circularly polarized light.
  • the 90-degree linearly polarized light will become 315 degrees of linearly polarized light after passing through the half-wavelength phase difference unit column 262 having an optical axis angle of 112.5 degrees, and then the optical axis is 0 degrees.
  • the quarter-wave phase difference plate 270 the light will form a right-hand circularly polarized light.
  • the left-hand circularly polarized light formed by the one-half wavelength phase difference cell array 261 and the quarter-wave phase difference plate 270 can only penetrate the polarized glasses 102.
  • One side (right or left side) lens (corresponding to the first quarter-wave retardation film 104) passes through the half-wavelength phase difference unit column 262 and the quarter-wave phase difference plate 270
  • the formed right-hand circularly polarized light can only penetrate the other side lens of the polarizing glasses 102 (corresponding to the second quarter-wave phase difference plate 105).
  • the eyes of the user can respectively see images of different pixel columns of the display panel 200, and a stereoscopic image effect can be formed.
  • FIG. 5 is a partial cross-sectional view showing a third embodiment of the display device of the present invention.
  • the display panel 300 of the third embodiment may include a first substrate 310, a second substrate 320, a liquid crystal layer 330, a first polarizer 340, a second polarizer 350, a half-wave phase difference plate 360, and a quarter.
  • the wavelength retardation plate 370 and the shield substrate 380 may include a first substrate 310, a second substrate 320, a liquid crystal layer 330, a first polarizer 340, a second polarizer 350, a half-wave phase difference plate 360, and a quarter.
  • the one-half wavelength phase difference plate 360 includes a plurality of first half-wave phase difference unit columns 361, a plurality of second half-wave phase difference unit columns 362, and an isotropic material unit column 363, two points One of the wavelength phase difference cell columns 361 and 362 is staggered in a structure of different layers, and the isotropic material cell column 363 can be interposed between the half-wavelength phase difference cell columns 361 and 362.
  • the display panel of the present invention and the display device thereof can form a stereoscopic image effect, and can improve the dispersion problem of the existing patterned phase retardation film three-dimensional display, improve the image crosstalk problem of the display device, and improve the display device. Image quality.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)

Abstract

一种显示面板（100）及应用其的显示装置。显示面板（100）包括第一基板（110）、第二基板（120）、液晶层（130）、第一偏光片（140）、第二偏光片（150）、二分之一波长相位差板（160）及四分之一波长相位差板(170）。液晶层（130）形成于所述第一基板（110）与所述第二基板（120）之间，第一偏光片（140）设置于所述第一基板（110）的外侧，第二偏光片（150）设置于所述第二基板（120）的外侧，二分之一波长相位差板（160）设置于所述第一偏光片（140）上，四分之一波长相位差板（170）设置于所述二分之一波长相位差板（160）上。本发明可改善三维显示器的色散问题。

Description

显示面板及其应用的显示装置 技术领域
本发明涉及一种显示面板及其应用的显示装置，特别是涉及一种用于显示三维影像的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，其是由显示面板及背光模块(backlight module)所组成。
目前，液晶显示器可具有立体影像显示功能，例如图形化相位延迟膜三维显示器(three dimension pattern retarder display)，其包括一设置于液晶显示器外侧的四分之一波长相位延迟片。
一般，图形化相位延迟膜三维显示器是将其奇数列(或偶数列)的画素作为左眼画素(left image pixels)，而其它数列的画素作为右眼画素(right image pixels)，当液晶显示器的光线经过不同配向的四分之一波长相位延迟片后，光线会分别形成左圆偏振光及右圆偏振光。使用者可搭配不同极化方向的圆偏眼镜(circular polarizer glasses)，使得使用者的左眼只能看到左眼画素所显示的影像，而右眼只能看到右眼画素所显示的影像，因而可达到三维立体影像的效果。
然而，现有图形化相位延迟膜三维显示器的相位延迟片无法同时对左、右两个路径进行色散(dispersion)补偿，而容易产生影像串扰。
 技术问题
本发明提供一种显示面板及其应用的显示装置，以解决三维显示器的色散问题。
 技术解决方案
本发明的主要目的在于提供一种显示面板，所述显示面板包括：
第一基板；
第二基板；
液晶层，形成于所述第一基板与所述第二基板之间；
第一偏光片，设置于所述第一基板的外侧；
第二偏光片，设置于所述第二基板的外侧；
二分之一波长相位差板，设置于所述第一偏光片上，其中所述二分之一波长相位差板包括至少两个第一二分之一波长相位差单元列，相邻的所述第一二分之一波长相位差单元列之间具有一预设间距；以及
四分之一波长相位差板，设置于所述二分之一波长相位差板上。
本发明的另一目的在于提供一种显示面板，所述显示面板包括：
第一基板；
第二基板；
液晶层，形成于所述第一基板与所述第二基板之间；
第一偏光片，设置于所述第一基板的外侧；
第二偏光片，设置于所述第二基板的外侧；
二分之一波长相位差板，设置于所述第一偏光片上，其中所述二分之一波长相位差板包括至少两个第一二分之一波长相位差单元列及第二二分之一波长相位差单元列，相邻的所述第一二分之一波长相位差单元列之间具有一预设间距，所述第二二分之一波长相位差单元列与所述第一二分之一波长相位差单元列是交错排列于不同层结构上；
四分之一波长相位差板，设置于所述二分之一波长相位差板上；以及
防护基板，其设置于所述四分之一波长相位差板上。
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；以及
显示面板，包括：
第一基板；
第二基板；
液晶层，形成于所述第一基板与所述第二基板之间；
第一偏光片，设置于所述第一基板的外侧；
第二偏光片，设置于所述第二基板的外侧；
二分之一波长相位差板，设置于所述第一偏光片上，其中所述二分之一波长相位差板包括至少两个第一二分之一波长相位差单元列，相邻的所述第一二分之一波长相位差单元列之间具有一预设间距；以及
四分之一波长相位差板，设置于所述二分之一波长相位差板上。
在本发明的一实施例中，所述的显示面板还包括防护基板，其设置于所述四分之一波长相位差板上。
在本发明的一实施例中，所述二分之一波长相位差板更包括等向性材料单元列，所述第一二分之一波长相位差单元列与所述等向性材料单元列是交错排列。
在本发明的一实施例中，所述四分之一波长相位差板的光轴与所述第一偏光片的穿透轴的夹角为45度，所述二分之一波长相位差单元列与所述第一偏光片的所述穿透轴的夹角为-θ，且符合下式：
-2θ- 45°= -315°。
在本发明的一实施例中，所述二分之一波长相位差板更包括第二二分之一波长相位差单元列，所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列是交错排列。
在本发明的一实施例中，所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列是交错排列于同一层结构上。
在本发明的一实施例中，所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列是交错排列于不同层结构上。
在本发明的一实施例中，所述二分之一波长相位差板更包括等向性材料单元列，所述等向性材料单元列插置于所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列之间。
在本发明的一实施例中，所述四分之一波长相位差板的光轴与所述第一偏光片的穿透轴的夹角为ψ，所述第一二分之一波长相位差单元列及所述第二二分之一波长相位差单元列分别与所述第一偏光片的所述穿透轴夹角为θ1及θ2，且符合下式：
2θ1+45=ψ + 180 *N，
2θ2+45=ψ + 180*N，
其中，N为整数。
相较于现有的三维显示器所具有的色散问题，本发明的显示面板及其应用的显示装置可通过设置二分之一波长相位差板来实现三维影像并，并可同时对不同像素列进行色散补偿，以改善现有三维显示器的色散问题，以改善显示装置的影像串扰问题，并增进显示装置的影像质量。
 有益效果
相较于现有的三维显示器所具有的色散问题，本发明的显示面板及其应用的显示装置可通过设置二分之一波长相位差板来实现三维影像并，并可同时对不同像素列进行色散补偿，以改善现有三维显示器的色散问题，以改善显示装置的影像串扰问题，并增进显示装置的影像质量。
 附图说明
图1为本发明显示装置的第一实施例的部分剖面图；
图2为本发明显示装置的第一实施例的光线偏振的示意图；
图3为本发明显示装置的第二实施例的部分剖面图；
图4为本发明显示装置的第二实施例的光线偏振的示意图；以及
图5为本发明显示装置的第三实施例的部分剖面图。
 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，用于例示本发明可用于实施的特定实施例。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于说明及理解本发明，而非用于限制本发明。
在图中，结构相似的单元是以相同标号表示。
请参照图1，其为本发明显示装置的第一实施例的部分剖面图。本实施例的显示装置可用于显示三维影像，此显示装置可包括显示面板100和背光模块101。显示面板100相对于背光模块101来设置，背光模块101可为侧光式(Edge Lighting)背光模块或直下式入光(Bottom Lighting)背光模块，以提供背光至显示面板100。
如图1所示，本实施的显示面板100可包括第一基板110、第二基板120、液晶层130、第一偏光片140、第二偏光片150、二分之一(1/2)波长相位差板160、四分之一(1/4)波长相位差板170及防护基板180。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，在本实施例中，第一基板110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，液晶层130是形成于第一基板110与第二基板120之间，第一偏光片140是设置第一基板110的外侧，并相对于液晶层130(亦即为第一基板110)的出光侧，第二偏光片150是设置第二基板120的外侧，并相对于液晶层130(亦即为第二基板120)的入光侧。
如图1所示，二分之一波长相位差板160是设置于第一偏光片140上，四分之一波长相位差板170是设置于二分之一波长相位差板160上，防护基板180是设置于四分之一波长相位差板170上。防护基板180例如为防护镜片(cover lens), 其优选是由高强度材料所制成，例如玻璃、碳纤维、强化塑料或上述之任意组合，用于保护和封装显示面板100的整体结构。
如图1所示，二分之一波长相位差板160包括多个第一二分之一波长相位差单元列161及多个等向性材料单元列162，第一二分之一波长相位差单元列161与等向性材料单元列162是交错排列，因而相邻第一二分之一波长相位差单元列161之间具有一预设间距(等向性材料单元列162的宽度)，其中此二分之一波长相位差单元列161具有一般二分之一波长相位差板的特性，以达到将线偏光转圆偏振光的效果，并可改善色散问题。
请参照图2，其为本发明显示装置的第一实施例的光线偏振的示意图。在本实施例中，四分之一波长相位差板170的光轴与第一偏光片140的穿透轴夹角为45°(误差可为±15°)。而二分之一波长相位差板160的二分之一波长相位差单元列161与第一偏光片140的穿透轴夹角为-θ(误差可为±15°)，且符合下式(1)：
-2θ- 45°= -315° (1)
如图2所示，例如θ为135度。因此，通过上式(1)，可确保波长相位差板160及170之间可形成良好的光学效果，进而确保立体影像效果。此时，由第一偏光片140所发出的光为90度的线性偏极化光，在经过等向性材料单元列162后，光线仍为90度的线偏极化光，接着经过光轴45度的四分之一波长相位差板170，则会形成左手圆偏振光。而90度的线偏极化光在经过光轴角度为135度的二分之一波长相位差单元列161后，光线仍为线偏极化光，但其偏振方向会转为270度，接着，光线在经过45度的四分之一波长相位差板170后会形成右手圆偏振光。
当使用者观看本实施例的显示装置的立体影像时，可搭配偏光眼镜(Polarizer Glasses)102来形成立体影像效果。此偏光眼镜102可具有偏光片103、第一四分之一波长相位差片104及第二四分之一波长相位差片105。当使用者戴上偏光眼镜102时，偏光片103是靠近于使用者的眼睛，第一四分之一波长相位差片104及第二四分之一波长相位差片105是形成于偏光片103上，且靠近于显示面板100。再者，第一四分之一波长相位差片104及第二四分之一波长相位差片105是分别位于偏光眼镜102的左、右侧镜片上。
如图2所示，当偏光眼镜102的偏光片103的穿透轴为0度，且第一四分之一波长相位差片104的光轴为45度时，可允许左手圆偏振光穿透，而右手圆偏振光会被吸收。反之，当第二四分之一波长相位差片105的光轴为135度时，可允许右手圆偏振光穿透而左手圆偏振光被吸收。
当使用者观看本实施例的显示装置的立体影像时，经过二分之一波长相位差单元列161及四分之一波长相位差板170所形成的右手圆偏振光仅能穿透偏光眼镜102的一侧(右侧或左侧)镜片(对应于第二四分之一波长相位差片105)，而经过等向性材料单元列162及四分之一波长相位差板170所形成的左手圆偏振光仅能穿透偏光眼镜102的另一侧镜片(对应于第一四分之一波长相位差片104)。换言之，使用者的双眼可分别看到显示面板100的不同像素列的影像，而可形成立体影像效果。
因此，通过本实施例的显示面板100及其应用的显示装置，可通过设置二分之一波长相位差板来实现三维影像并，并可同时对不同像素列进行色散补偿，以改善当现有图形化相位延迟膜三维显示器仅具有单一四分之一波长相位差板时所发生的色散问题，因而可改善显示装置的影像串扰问题。
请参照图3，其为本发明显示装置的第二实施例的部分剖面图。第二实施例的显示面板200可包括第一基板210、第二基板220、液晶层230、第一偏光片240、第二偏光片250、二分之一波长相位差板260、四分之一波长相位差板270及防护基板280。二分之一波长相位差板260包括多个第一二分之一波长相位差单元列261及多个第二二分之一波长相位差单元列262，二分之一波长相位差单元列261及262是交错排列于同一层结构上，以分别对不同的像素列进行相位延迟及色散补偿。
请参照图4，其为本发明显示装置的第二实施例的光线偏振的示意图。在第二实施例中，四分之一波长相位差板270的光轴与第一偏光片240的穿透轴夹角为ψ (误差可为±15°)。而二分之一波长相位差板260的二分之一波长相位差单元列261、262分别与第一偏光片240的穿透轴夹角为θ1(顺时针方向)、θ2(逆时针方向) (误差可为±15°)，且符合下式(2)及(3)：
2θ1+45=ψ + 180 *N (2)
2θ2+45=ψ + 180*N (N为整数) (3)
如图4所示，例如，ψ为90度，θ1为22.5度、θ2为22.5度。因此，通过上式(2)及(3)，可确保波长相位差板260及270之间可形成良好的光学效果，进而确保立体影像效果。
如图4所示，此时，由第一偏光片240所发出的光为90度的线性偏极化光，光线在经过光轴为67.5度的二分之一波长相位差单元列261后，会变成45度的线偏极化光，接着经过光轴为0度的四分之一波长相位差板270，光线会形成左手圆偏振光。而90度的线偏极化光在经过光轴角度为112.5度的二分之一波长相位差单元列262后，会变成315度的线偏极化光，接着经过光轴为0度的四分之一波长相位差板270，光线会形成右手圆偏振光。
当使用者观看本实施例的显示装置的立体影像时，经过二分之一波长相位差单元列261及四分之一波长相位差板270所形成的左手圆偏振光仅能穿透偏光眼镜102的一侧(右侧或左侧)镜片(对应于第一四分之一波长相位差片104)，而经过二分之一波长相位差单元列262及四分之一波长相位差板270所形成的右手圆偏振光仅能穿透偏光眼镜102的另一侧镜片(对应于第二四分之一波长相位差片105)。换言之，使用者的双眼可分别看到显示面板200的不同像素列的影像，而可形成立体影像效果。
请参照图5，其为本发明显示装置的第三实施例的部分剖面图。第三实施例的显示面板300可包括第一基板310、第二基板320、液晶层330、第一偏光片340、第二偏光片350、二分之一波长相位差板360、四分之一波长相位差板370及防护基板380。二分之一波长相位差板360包括多个第一二分之一波长相位差单元列361、多个第二二分之一波长相位差单元列362及等向性材料单元列363，二分之一波长相位差单元列361及362是交错排列于不同层的结构上，且等向性材料单元列363可插置于二分之一波长相位差单元列361及362之间。
由上述可知，本发明的显示面板及其应用的显示装置可形成立体影像效果，且可改善现有图形化相位延迟膜三维显示器的色散问题，以改善显示装置的影像串扰问题，并提高显示装置的影像质量。
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于限制本发明，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
工业实用性
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Claims (13)

  1. 一种显示面板，其特征在于：所述显示面板包括：
    第一基板；
    第二基板；
    液晶层，形成于所述第一基板与所述第二基板之间；
    第一偏光片，设置于所述第一基板的外侧；
    第二偏光片，设置于所述第二基板的外侧；
    二分之一波长相位差板，设置于所述第一偏光片上，其中所述二分之一波长相位差板包括至少两个第一二分之一波长相位差单元列及第二二分之一波长相位差单元列，相邻的所述第一二分之一波长相位差单元列之间具有一预设间距，所述第二二分之一波长相位差单元列与所述第一二分之一波长相位差单元列是交错排列于不同层结构上；
    四分之一波长相位差板，设置于所述二分之一波长相位差板上；以及
    防护基板，其设置于所述四分之一波长相位差板上。
  2. 根据权利要求1所述的显示面板，其特征在于：所述二分之一波长相位差板更包括等向性材料单元列，所述等向性材料单元列插置于所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列之间。
  3. 根据权利要求2所述的显示面板，其特征在于：所述四分之一波长相位差板的光轴与所述第一偏光片的穿透轴的夹角为ψ，所述第一二分之一波长相位差单元列及所述第二二分之一波长相位差单元列分别与所述第一偏光片的所述穿透轴夹角为θ1及θ2，且符合下式：
    2θ1+45=ψ + 180 *N，
    2θ2+45=ψ + 180*N，
    其中，N为整数。
  4. 一种显示面板，其特征在于：所述显示面板包括：
    第一基板；
    第二基板；
    液晶层，形成于所述第一基板与所述第二基板之间；
    第一偏光片，设置于所述第一基板的外侧；
    第二偏光片，设置于所述第二基板的外侧；
    二分之一波长相位差板，设置于所述第一偏光片上，其中所述二分之一波长相位差板包括至少两个第一二分之一波长相位差单元列，相邻的所述第一二分之一波长相位差单元列之间具有一预设间距；以及
    四分之一波长相位差板，设置于所述二分之一波长相位差板上。
  5. 根据权利要求4所述的显示面板，其特征在于：还包括防护基板，其设置于所述四分之一波长相位差板上。
  6. 根据权利要求4所述的显示面板，其特征在于：所述二分之一波长相位差板更包括等向性材料单元列，所述第一二分之一波长相位差单元列与所述等向性材料单元列是交错排列。
  7. 根据权利要求6所述的显示面板，其特征在于：所述四分之一波长相位差板的光轴与所述第一偏光片的穿透轴的夹角为45度，所述二分之一波长相位差单元列与所述第一偏光片的所述穿透轴的夹角为-θ，且符合下式：
    -2θ- 45°= -315°。
  8. 根据权利要求4所述的显示面板，其特征在于：所述二分之一波长相位差板更包括第二二分之一波长相位差单元列，所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列是交错排列。
  9. 根据权利要求8所述的显示面板，其特征在于：所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列是交错排列于同一层结构上。
  10. 根据权利要求8所述的显示面板，其特征在于：所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列是交错排列于不同层结构上。
  11. 根据权利要求10所述的显示面板，其特征在于：所述二分之一波长相位差板更包括等向性材料单元列，所述等向性材料单元列插置于所述第一二分之一波长相位差单元列与所述第二二分之一波长相位差单元列之间。
  12. 根据权利要求8所述的显示面板，其特征在于：所述四分之一波长相位差板的光轴与所述第一偏光片的穿透轴的夹角为ψ，所述第一二分之一波长相位差单元列及所述第二二分之一波长相位差单元列分别与所述第一偏光片的所述穿透轴夹角为θ1及θ2，且符合下式：
    2θ1+45=ψ + 180 *N，
    2θ2+45=ψ + 180*N，
    其中，N为整数。
  13. 一种显示装置，其特征在于：所述显示装置包括：
    背光模块；以及如权利要求4到12任一项所述的显示面板。
PCT/CN2011/077983 2011-06-21 2011-08-04 显示面板及其应用的显示装置 Ceased WO2012174774A1 (zh)

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CN102663965B (zh) * 2012-04-20 2014-04-09 深圳市华星光电技术有限公司 一种显示面板及3d显示装置
CN102636930B (zh) * 2012-04-27 2015-08-19 深圳市华星光电技术有限公司 采用半源极驱动结构的3d显示装置
CN107991783A (zh) * 2018-01-30 2018-05-04 京东方科技集团股份有限公司 3d显示器件
CN112394565B (zh) * 2020-11-05 2023-07-25 惠州市华星光电技术有限公司 显示装置及显示系统

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