WO2013010491A1 - 半透射半反射液晶显示器及其制作方法 - Google Patents

半透射半反射液晶显示器及其制作方法 Download PDF

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Publication number
WO2013010491A1
WO2013010491A1 PCT/CN2012/078868 CN2012078868W WO2013010491A1 WO 2013010491 A1 WO2013010491 A1 WO 2013010491A1 CN 2012078868 W CN2012078868 W CN 2012078868W WO 2013010491 A1 WO2013010491 A1 WO 2013010491A1
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liquid crystal
transparent electrode
crystal layer
crystal display
reflective
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English (en)
French (fr)
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徐智强
李会
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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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
    • G02F1/133553—Reflecting elements
    • G02F1/133555—Transflectors
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
    • 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

Definitions

  • the invention relates to a transflective liquid crystal display and a manufacturing method thereof. Background technique
  • the liquid crystal display can be composed of components such as a display screen, a backlight, and a driving circuit.
  • the display screen may specifically include an array substrate and a color filter substrate and a liquid crystal layer filled with a gap between the array substrate and the color filter substrate.
  • the principle of displaying an image on a liquid crystal display may be based on the fact that the liquid crystal molecules in the liquid crystal layer are rotated at different angles according to the magnitude of the pressure applied by the driving circuit, and the alignment direction of the liquid crystal molecules also changes, so that the illumination light penetrating through the liquid crystal molecules also occurs. Changing characteristics.
  • the backlight of the rear or side of the array substrate applies illumination light to the display screen, the illumination light is transmitted through the display screen to the eyes of the person, so that the viewer can see the image displayed on the display screen.
  • the liquid crystal display derives a transflective liquid crystal display structure.
  • Each pixel in the liquid crystal display screen is divided into two regions: in the transmissive region, the illumination light of the backlight is still The display can be penetrated; in the reflective area, the light that is illuminated by the outside of the display into the display can be reflected to the liquid crystal and up to the viewer.
  • the transflective liquid crystal display can save the energy consumption of the backlight to a certain extent because it can utilize external light and work with the backlight or alone.
  • the light emitted from the transmissive area is generated by the backlight, and the light emitted from the reflective area is reflected by the external light that is incident on the display screen, the light emitted between the two regions exists between the two regions. A certain optical delay.
  • the prior art In order to eliminate the optical retardation between the light emitted from the transmissive region and the reflective region, the prior art generally uses a different thickness of the liquid crystal layer to design the transmissive region and the reflective region, or a compensation film to eliminate the transmissive region and the reflective region. Optical retardation between externally emitted rays.
  • the technical problem to be solved by the present invention is to provide a transflective liquid crystal display and a method for fabricating the same, thereby reducing the production process difficulty and fabrication cost of the transflective liquid crystal display.
  • the present invention provides the following solutions:
  • An embodiment of the present invention provides a transflective liquid crystal display, comprising: an array substrate; a color filter substrate coupled to the array substrate; and a liquid crystal layer interposed between the array substrate and the color filter substrate, And the liquid crystal layer includes liquid crystal molecules; a plurality of pixels are formed on the array substrate, wherein each pixel includes an adjacent transmissive region and a reflective region, and the liquid crystal layer has the same thickness of the transmissive region and the reflective region a first transparent electrode formed on the array substrate; a second transparent electrode formed on the color filter substrate in the transmissive region, wherein the liquid crystal layer of the transmissive region further comprises a cured photosensitive monomer And in the reflective region is an uncured photosensitive monomer, the transmissive region and the liquid crystal layer of the reflective region have the same thickness, and the initial optical retardation of the liquid crystal layer in the transmissive region is different from the liquid crystal in the reflective region.
  • the initial optical retardation of the layer such that the light emitted from the reflective region and the transmissive region has an equal phase when the transflective liquid crystal display is normally displayed The first transparent electrode and the second transparent electrode are used to set an initial optical retardation of the liquid crystal layer of the transmissive region.
  • the embodiment of the present invention further provides a method for fabricating a transflective liquid crystal display, comprising: fabricating an array substrate, wherein the array substrate is formed with a first transparent electrode; and forming a color filter substrate, each of the transflective liquid crystal displays
  • the pixels are divided into a transmissive area and a reflective area, wherein the transmissive area is formed with a second transparent electrode on the color filter substrate;
  • a liquid crystal layer is interposed between the array substrate and the color filter substrate, and in the liquid crystal
  • the layer is doped with a photosensitive monomer and subjected to a process of boxing, such that the liquid crystal layer in the transmissive region and the reflective region has a first optical retardation;
  • a first voltage is applied to the first transparent electrode, and the second transparent electrode is Applying a second voltage, a voltage difference between the first voltage and the second voltage, the voltage difference causing an optical retardation of the liquid crystal layer in a transmissive region to change from a first optical retardation to a second optical
  • FIG. 1 is a schematic structural view of a transflective liquid crystal display according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a transflective liquid crystal display provided by an embodiment of the present invention
  • the embodiment of the present invention provides a transflective liquid crystal display, which may specifically include a plurality of pixels, as shown in FIG. 1, wherein each pixel may be specifically divided into adjacent transmissive regions. 120 and two regions of the reflective area 130, and each of the pixels may specifically include:
  • the substrate 102 may be referred to as an array substrate
  • a transparent electrode 103 located in the transmissive region, the transparent electrode 103 being specifically a common electrode or a pixel electrode, formed above the substrate 102;
  • the reflective electrode 109 located in the reflective region is spaced apart from the transparent electrode 103 and formed above the substrate 102.
  • the reflective electrode 109 has a function of reflecting external light and shielding ultraviolet light and the like.
  • the transparent electrode 104 is formed on the transparent electrode 103, and the transparent electrode 104 can be a pixel electrode or a common electrode, and can be composed of a plurality of strip-shaped transparent electrode blocks, and a plurality of strip-shaped transparent electrode blocks are separated by a predetermined distance.
  • the preset distance may be specifically set based on characteristics of liquid crystal molecules and actual requirements;
  • liquid crystal layer 105 which may further include liquid crystal molecules 106 and a photosensitive cell 107 interposed between the substrate 102 on which the above-described components are formed and the substrate 113 on which the components to be described below are formed;
  • a transparent electrode 108 located in the transmissive region is formed on the substrate 113;
  • the insulating layer 111 is filled with a space between the transparent electrode 108, the liquid crystal layer 105, and the color film layer 112;
  • the substrate 113 may be referred to as a color film substrate
  • the polarizer 114 has an angle between the polarizing direction of the polarizer 114 and the polarizing direction of the polarizer 101 of 90 (degrees).
  • the portion of the liquid crystal layer 105 including the polarizer 101, the substrate 102, the transparent electrode 103, the transparent electrode 104, the reflective electrode 109, and the insulating layer 110, may be referred to as an array substrate.
  • 140 is the TFT substrate 140, and the portion including the transparent electrode 108, the insulating layer 111, the color filter layer 112, the substrate 113, and the polarizer 114 above the liquid crystal layer 105 is referred to as a color filter substrate 150 as a whole.
  • the initial optical retardation of the liquid crystal layer 105 in the transmissive region 120 during operation is 1/2 wavelength ( ⁇ ); and the liquid crystal layer 105 in the reflective region 130 maintains the initial set 3 ⁇ /4 optical retardation due to the presence of the reflective electrode 109, thereby eliminating the emission of the transmission region 120.
  • the photosensitive monomer 107 may be, for example, decyl methacrylate, acrylic acid or the like.
  • the TFT substrate 140 and the color filter substrate 150 can be fabricated.
  • various electrodes, insulating layers, color film layers, and the like involved in the transflective liquid crystal display are assembled according to the structural relationship shown in FIG. 1 to fabricate the TFT substrate 140 and The color film substrate 150 (the polarizer can be attached after the processing of the cartridge).
  • the photosensitive monomer 107 can then be incorporated into the liquid crystal layer 105 and subjected to card processing, and the optical retardation of the liquid crystal layer 105 is set to 3 ⁇ /4, where ⁇ is the wavelength of light of the light-transmitting liquid crystal layer.
  • a schematic diagram of the initial state of the liquid crystal layer 105 at this time can be as shown in FIG.
  • a voltage of a different value may be applied to the transparent electrode 104 and the transparent electrode 108 in the transmissive region 120, respectively. Even if there is a voltage difference V between the transparent electrode 104 and the transparent electrode 108, the voltage difference V may be in the transmissive region 120.
  • the liquid crystal molecules 106 in the liquid crystal layer 105 are rotated by an angle in a certain direction, and the rotated liquid crystal molecules can change the optical retardation of the liquid crystal layer in the transmissive region 120 from the initially set 3 ⁇ /4 to ⁇ /2.
  • the state of the liquid crystal layer 105 at this time can be as shown in Fig. 2.
  • the voltage difference V and the specific values of the rotation direction and the angle of the liquid crystal molecules 106 are not limited in the embodiment of the present invention, as long as the optical retardation of the liquid crystal layer in the transmission region is ensured. ⁇ /2 can be.
  • the transmission region 120 of the pixel and the reflection region 130 can be illuminated using ultraviolet light.
  • ultraviolet light irradiation may be performed from the direction of the TFT substrate 140 to the transmissive area 120 of the pixel and the reflection area 130.
  • the photosensitive cells 107 are solidified on the surface of the liquid crystal layer 105 close to the upper and lower substrates (140, 150) due to the irradiation of the ultraviolet ray, so that the liquid crystal in the liquid crystal layer 105 of the transmissive region 120 can be made.
  • the molecules 106 are fixed at an angle after rotation, such that even if the applied voltage of the transparent electrode 104 and the transparent electrode 108 is removed, the initial optical retardation of the liquid crystal layer 105 in the transmissive region 120 during operation can be ⁇ /2.
  • the initial optical delay of the liquid crystal layer 105 in the transmissive region 120 during operation is set to ⁇ /2 by the above-mentioned structural arrangement and technical operation, and subsequently, when the liquid crystal display is working normally, it can be normal.
  • the operation mode operates by applying a corresponding operating voltage to the transparent electrode 103 and the transparent electrode 104 to operate the liquid crystal layer 105 in the transmissive region 120 with a ⁇ /2 initial optical retardation as a starting point.
  • the reflective electrode 109 In the reflective region 130, the reflective electrode 109 is provided, and the reflective electrode 109 has a function of reflecting external light that is incident from the direction of the color filter substrate 150 and shielding ultraviolet light from the direction of the TFT substrate 140. Therefore, The ultraviolet ray irradiation light does not penetrate the reflective electrode 109 and is incident on the liquid crystal layer 105 in the reflection region 130, so that the liquid crystal molecules 106 and the photosensitive cells 107 in the liquid crystal layer 105 in the reflection region 130 do not change state. Therefore, the initial optical delay of the liquid crystal layer 105 in the reflective region 130 during operation can still be an initial setting of 3 ⁇ /4. A different optical delay between the pixel reflective region 120 and the transmissive region 130 is then achieved.
  • the initial optical retardation of the liquid crystal layer of the transmissive region is set to ⁇ /2, and the initial optical retardation of the liquid crystal layer in the reflective region is set to 3 ⁇ /4.
  • the initial optical retardation of the liquid crystal layer of the reflective region and the transmissive region can also be set to 2 ⁇ /2 and 2 ⁇ 3 ⁇ /4, respectively (where ⁇ is a positive integer), or
  • the initial optical retardation of the liquid crystal layer of the reflective region and the transmissive region may also be set to an integral multiple of the wavelength, respectively, as long as the light emitted by the transmissive region 120 and the light emitted by the reflective region 130 are eliminated during normal operation of the liquid crystal display. Optical delay is enough.
  • the transmissive region 120 since the initial optical axis direction of the liquid crystal molecules 106 in the liquid crystal layer 105 of the transmissive region 120 coincides with the direction of the polarizer 101, the light emitted by the backlight becomes a linear polarized light after entering the polarizer 101, and the line The polarized ray passes through the liquid crystal layer 105 and the polarizer 114 in this order.
  • the optical axis direction of the liquid crystal molecules 106 in the liquid crystal layer 105 of the transmissive region 120 does not change because the optical axis direction of the liquid crystal molecules 106 is consistent with the polarization direction of the linear polarized light A, so the line After the polarized light A passes through the liquid crystal layer 105, the polarization direction is constant and is blocked by the polarizer 114. At this time, the transmissive area of the pixel is in a dark state.
  • the liquid crystal molecules 106 are deflected 45 in the optical axis direction in the liquid crystal layer 105 of the transmissive region 120. Since the initial optical retardation of the liquid crystal layer 105 during operation has been changed from the initial setting of 3 ⁇ /4 to ⁇ /2, the linearly polarized light is rotated by 90° after the liquid crystal layer 105 is rotated, so that the polarizing plate 114 can pass through the polarizer 114. The transmission area of the pixel is in a bright state.
  • the initial optical axis direction of the liquid crystal molecules 106 in the liquid crystal layer 105 of the reflective region 130 is at an angle of 45 with the polarizing direction of the polarizer 114.
  • the external light enters the linearly polarized light B after entering the polarizer 114, is reflected by the reflective electrode 109 through the liquid crystal layer 105, and passes through the liquid crystal layer 105 and the polarizer 114 again.
  • the linearly polarized light B becomes left-handed (right-handed) circularly polarized light C after passing through the liquid crystal layer 105 in the reflective region 130 (the optical retardation is the initial 3 1 A).
  • the reflective electrode 109 reflects, it becomes a right-handed (left-handed) circularly polarized light D, and after passing through the liquid crystal layer 105 again, a linearly polarized light E having an angle of 90° with respect to the linearly polarized light B is formed, and the polarizing plate 114 cannot pass through, and the reflective area of the pixel is Dark state.
  • the reflective region 130 is placed.
  • the optical axis direction of the liquid crystal molecules 106 in the liquid crystal layer 105 is aligned with the direction of the polarizer 114 (or the optical retardation of the liquid crystal layer 105 is 0 or ⁇ /2), and the linearly polarized light passes through the liquid crystal layer 105 and is reflected by the reflective electrode 109 to pass through the polarizer 114.
  • the reflective area of the pixel is bright.
  • the transflective liquid crystal display provided by the embodiment of the present invention has the same thickness of the liquid crystal layer in the transmissive area and the reflective area of the liquid crystal display, and is transparently disposed on both sides of the liquid crystal layer in the transmissive area.
  • the electrode, and a voltage difference between the two transparent electrodes can change the optical retardation of the liquid crystal layer in the transmissive region from the initial set of 3 ⁇ /4 to ⁇ /2, and at the same time, the irradiation of the ultraviolet light
  • the photosensitive monomer in the liquid crystal layer in the transmissive region is solidified, so that the initial optical retardation of the liquid crystal layer in the transmissive region during operation is fixed to ⁇ /2, and since the reflective region of the pixel is provided with the reflective electrode, it is in reflection
  • the initial optical retardation of the liquid crystal layer of the region during operation can be maintained at the initial setting of 3 ⁇ /4, so that the transmissive region and the reflective region of the pixel have different optical delays, thereby eliminating the light and the reflective region emitted by the pixel transmissive region.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种半透射半反射液晶显示器及其制作方法，该半透射半反射液晶显示器包括：阵列基板（140）；彩膜基板（150），结合于所述阵列基板（140）；液晶层（105），夹设在所述阵列基板（140）与所述彩膜基板（150）之间，且所述液晶层（105）包括液晶分子（106）；多个像素，形成在阵列基板上，其中每一个像素包括相邻的透射区和反射区，且透射区（120）和反射区（130）的液晶层（105）厚度相同；第一透明电极，形成在阵列基板（140）上；第二透明电极，在透射区（120）形成在彩膜基板（150）上，透射区（120）的液晶层（105）中还包括被固化的感光单体（107），且反射区（130）中为未固化的感光单体（107），处于透射区（120）的液晶层（105）的初始光学延迟不同于处于反射区（130）的液晶层的初始光学延迟，第一透明电极和第二透明电极用于设置透射区（120）的液晶层（105）的初始光学延迟。

Description

半透射半反射液晶显示器及其制作方法 技术领域
本发明涉及一种半透射半反射液晶显示器及其制作方法。 背景技术
液晶显示器可由显示屏、 背光源及驱动电路等部件组成。 显示屏具体可 以包括对盒而成的阵列基板和彩膜基板以及液晶层， 液晶层充满阵列基板和 彩膜基板之间的间隙。 液晶显示器显示图像的原理可基于液晶层中的液晶分 子随着驱动电路所施压大小而旋转不同角度时， 液晶分子的排列方向也发生 改变， 导致穿透过液晶分子的照射光线也随之发生变化的特性。 当阵列基板 后部或侧部的背光源对显示屏施加照射光时， 该照射光穿透显示屏照射到人 们的眼睛里， 从而使观看者可以看到显示屏显示的图像。
为了节省背光源的能源消耗， 液晶显示器衍生出一种半透射半反射的液 晶显示器结构， 这种液晶显示器显示屏中的每个像素分为两个区域： 在透射 区， 背光源的照射光仍然可以穿透显示屏； 在反射区， 可由设置的漫反射板 将由显示屏外界照射入显示屏的光线， 反射到液晶并直至观看者。 由于可利 用外界光线， 与背光源一起或独自工作， 因此半透射半反射液晶显示器可以 在一定程度上节省背光源的能耗。
由于透射区向外发射的光线为背光源产生的， 而反射区向外发射的光线 为由外界照射入显示屏的光线经过反射而产生的， 因此， 两个区域向外发射 的光线之间存在一定的光学延迟。
为了消除透射区和反射区向外发射的光线之间的光学延迟， 现有技术通 常釆用将透射区和反射区设计不同的液晶层厚度， 或者增加补偿膜， 来消除 透射区和反射区向外发射的光线之间的光学延迟。
但是， 上述现有技术解决方案， 实现技术难度大， 增加了半透射半反射 液晶显示器的生产工艺的难度， 同时也增加了半透射半反射液晶显示器的制 作成本。 发明内容
本发明所要解决的技术问题是提供一种半透射半反射液晶显示器及其制 作方法， 从而降低半透射半反射液晶显示器的生产工艺难度和制作成本。
为解决上述技术问题， 本发明提供方案如下：
本发明实施例提供了一种半透射半反射液晶显示器， 包括： 阵列基板； 彩膜基板， 结合于所述阵列基板； 液晶层， 夹设在所述阵列基板与所述彩膜 基板之间， 且所述液晶层包括液晶分子； 多个像素， 形成在所述阵列基板上， 其中每一个像素包括相邻的透射区和反射区， 且所述透射区和反射区的所述 液晶层厚度相同； 第一透明电极， 形成在所述阵列基板上； 第二透明电极， 在所述透射区形成在所述彩膜基板上， 其中所述透射区的液晶层中还包括被 固化的感光单体， 且所述反射区中为未固化的感光单体， 所述透射区和所述 反射区的所述液晶层的厚度相同， 处于透射区的液晶层的初始光学延迟不同 于处于反射区的液晶层的初始光学延迟而使得所述半透射半反射液晶显示器 正常显示时从所述反射区和所述透射区出射的光线具有相等的相位， 所述第 一透明电极和所述第二透明电极用于设置透射区的液晶层的初始光学延迟。
本发明实施例还提供了一种半透射半反射液晶显示器制作方法， 包括： 制作阵列基板， 该阵列基板上形成有第一透明电极； 制作彩膜基板， 所述半 透射半反射液晶显示器的每个像素被分为透射区和反射区， 其中所述透射区 该彩膜基板上形成有第二透明电极； 将液晶层夹设在所述阵列基板与所述彩 膜基板之间， 并且在液晶层中掺入感光单体并进行对盒处理， 使处于透射区 和反射区的所述液晶层具有第一光学延迟； 为所述第一透明电极施加第一电 压， 为所述第二透明电极施加第二电压， 所述第一电压与所述第二电压之间 存在电压差， 所述电压差使处于透射区的所述液晶层的光学延迟由第一光学 延迟变为第二光学延迟； 以及使用紫外线照射光对所述液晶层进行照射， 使 处于透射区的液晶层中的所述感光单体固化， 从而使处于透射区的光学延迟 固定为第二光学延迟， 其中所述第一光学延迟不同于所述第二光学延迟， 使 得所述半透射半反射液晶显示器正常显示时从所述反射区和所述透射区出射 的光线具有相等的相位。 附图说明 为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为本发明实施例提供的半透射半反射液晶显示器结构示意图； 图 2 为本发明实施例提供的半透射半反射液晶显示器制作过程示意图 图 3 为本发明实施例提供的半透射半反射液晶显示器制作过程示意图
具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
本发明实施例提供了一种半透射半反射液晶显示器， 该半透射半反射液 晶显示器中具体可以包括多个像素， 如附图 1所示， 其中每一个像素具体可 以分为相邻的透射区 120以及反射区 130两个区域部分， 并且， 每一个像素 具体可以包括：
偏光片 101 ;
基板 102, 可称之为阵列基板；
位于透射区的透明电极 103 , 该透明电极 103具体可为公共电极或像素 电极， 形成在基板 102上方；
位于反射区的反射电极 109, 与透明电极 103间隔绝缘设置， 形成在基 板 102上方， 该反射电极 109具有反射外界光线， 以及遮挡紫外线等照射光 的功能；
透明电极 104, 形成在透明电极 103上方， 该透明电极 104可为像素电 极或公共电极， 具体可由多个条状透明电极块组成， 且多个条状透明电极块 之间间隔一预设距离， 所述预设距离可基于液晶分子的特性以及实际要求具 体设置； 绝缘层 110,该绝缘层 110布满透明电极 103、透明电极 104以及反射电 极 109之间的空间；
液晶层 105,该液晶层 105中还可以包括液晶分子 106以及感光单体 107 , 夹设在其上形成有上述部件的基板 102和其上形成有下面将描述的部件的基 板 113之间；
位于透射区的透明电极 108, 形成在基板 113之上；
绝缘层 111 , 该绝缘层 111布满透明电极 108、 液晶层 105以及彩膜层 112之间的空间；
彩膜层 112;
基板 113 , 可称之为彩膜基板；
偏光片 114, 该偏光片 114的偏光方向与偏光片 101的偏光方向之间的 夹角为 90° (度）。
本发明实施例中， 也可将附图 1中， 液晶层 105以下， 包括偏光片 101、 基板 102、 透明电极 103、 透明电极 104、 反射电极 109、 绝缘层 110的部分 整体称之为阵列基板 140即 TFT基板 140, 而将液晶层 105以上， 包括透明 电极 108、 绝缘层 111、 彩膜层 112、 基板 113以及偏光片 114的部分整体称 之为彩膜基板 150。
在本发明实施例中， 通过对处于透射区 120中的液晶层 105中的液晶分 子 106以及感光单体 107进行处理， 从而使处于透射区 120中的液晶层 105 在工作时的初始光学延迟为 1/2波长（λ ); 而处于反射区 130的液晶层 105 由于反射电极 109的存在， 其工作时的初始光学延迟仍保持初始设置的 3λ/4 光学延迟， 从而消除了透射区 120所发射的光线与反射区 130所发射的光线 之间的光学延迟。
这里， 感光单体 107可以例如为曱基丙烯酸曱酯、 丙烯酸等。
下面对本发明实施例提供的半透射半反射液晶显示器的一个具体制作实 现过程进行详细的表述：
首先可制作 TFT基板 140以及彩膜基板 150。
具体可按附图 1 所示的结构关系， 将本发明实施例提供的半透射半反射 液晶显示器中所涉及的各种电极、绝缘层、彩膜层等组装在一起，制作出 TFT 基板 140以及彩膜基板 150 (偏光片可在对盒处理以后贴附 )。 然后可在液晶层 105中掺入感光单体 107并实现对盒处理，将液晶层 105 的光学延迟设置为 3λ/4, 其中 λ为透光液晶层的光的波长。 此时液晶层 105初 始状态的示意图可如附图 1所示。
接下来可分别为处于透射区 120中的透明电极 104与透明电极 108施加 不同值的电压， 即使透明电极 104与透明电极 108之间存在一电压差 V, 该 电压差 V可以使处于透射区 120的液晶层 105中液晶分子 106在某一方向上 旋转一角度， 旋转后的液晶分子可以使处于透射区 120 中的液晶层的光学延 迟由初始设置的 3λ/4变为 λ/2。 此时的液晶层 105的状态可如附图 2所示。 由 于不同的液晶分子 106具体不同的特性， 因此， 本发明实施例中并不限制电 压差 V, 以及液晶分子 106的旋转方向和角度的具体数值， 只要保证处于透 射区的液晶层的光学延迟为 λ/2即可。
最后， 可使用紫外线照射光对像素的透射区 120以及反射区 130进行照 射。
具体可以从 TFT基板 140方向向像素的透射区 120以及反射区 130进行 紫外线照射光照射。
在透射区 120, 由于紫外线照射光的照射， 感光单体 107会在液晶层 105 靠近上下两个基板（ 140、 150 )的表面进行固化， 从而可以使处于透射区 120 的液晶层 105中的液晶分子 106按旋转后的角度固定， 这样， 即便撤去透明 电极 104和透明电极 108的外加电压， 处于透射区 120的液晶层 105在工作 时的初始光学延迟仍可为 λ/2。 即本发明实施例中， 通过上述的结构设置以及 技术操作， 将处于透射区 120的液晶层 105在工作时的初始光学延迟设置为 λ/2, 后续在液晶显示器正常工作时， 可按正常的操作模式进行工作， 通过对 透明电极 103及透明电极 104施加对应的工作电压， 使处于透射区 120的液 晶层 105以 λ/2初始光学延迟为起点进行工作。
而在反射区 130, 由于设置有反射电极 109, 而反射电极 109具有可以反 射从彩膜基板 150方向照射进来的外界光线， 以及遮挡从 TFT基板 140方向 照射进来的紫外线照射光的功能， 因此， 紫外线照射光不会穿透反射电极 109 而照射入处于反射区 130的液晶层 105, 这样， 处于反射区 130中的液晶层 105中的液晶分子 106以及感光单体 107也不会发生状态变化，从而使处于反 射区 130中的液晶层 105在工作时的初始光学延迟仍可为初始设置的 3λ/4, 那么就实现了像素反射区 120与透射区 130不同的光学延迟。
作为示例， 透射区的液晶层的初始光学延迟被设置为 λ/2, 反射区中的液 晶层的初始光学延迟被设置为 3λ/4。 然而， 本领域的技术人员应该理解的是， 反射区和透射区的液晶层的初始光学延迟也可以分别被设置为 2η·λ/2 和 2η·3λ/4 (这里 η为正整数）， 或者反射区和透射区的液晶层的初始光学延迟也 可以分别被设置为波长的整数倍， 只要在液晶显示器正常工作时能消除透射 区 120所发射的光线与反射区 130所发射的光线之间的光学延迟即可。
下面对本发明实施例提供的半透射半反射液晶显示器中包含的像素的透 射区 120以及反射区 130的原理进行简单的说明。
对于透射区 120, 由于处于透射区 120的液晶层 105 中的液晶分子 106 初始光轴方向与偏光片 101方向一致， 由背光源发射的光线由偏光片 101进 入后变为线偏光 Α, 该线偏光 Α依次经过液晶层 105以及偏光片 114。
当透明电极 103与透明电极 104无工作电压施加时， 处于透射区 120的 液晶层 105中液晶分子 106光轴方向不发生改变， 因为液晶分子 106光轴方 向与线偏光 A偏振方向一致， 故线偏光 A通过液晶层 105后偏振方向不变， 被偏光片 114阻挡， 此时， 像素的透射区呈暗态。
当透明电极 103与透明电极 104施加工作电压时， 处于透射区 120的液 晶层 105中液晶分子 106光轴方向偏转 45。，因为液晶层 105在工作时的初始 光学延迟已经由初始设置的 3λ/4改变为 λ/2, 线偏光 Α通过液晶层 105后偏 振方向旋转 90°, 从而可以通过偏光片 114, 此时， 像素的透射区呈亮态。
对于反射区 130, 由于处于反射区 130的液晶层 105 中的液晶分子 106 初始光轴方向与偏光片 114的偏光方向成 45°夹角。外界光线由偏光片 114进 入后变为线偏光 B, 经液晶层 105后由反射电极 109反射， 再次经过液晶层 105以及偏光片 114。
当透明电极 104与反射电极 109无工作电压施加时， 线偏光 B通过处于 反射区 130中液晶层 105 (光学延迟为初始的 3 1 A )后变成左旋（右旋 )圓偏 振光 C, 经反射电极 109反射后变成右旋（左旋） 圓偏振光 D, 再次经过液 晶层 105后将形成与线偏光 B夹角为 90°的线偏光 E, 无法通过偏光片 114, 像素的反射区呈暗态。
当透明电极 104与反射电极 109施加工作电压后， 使处于反射区 130的 液晶层 105中液晶分子 106光轴方向与偏光片 114方向一致（或液晶层 105 光学延迟为 0或 λ/2 ) , 线偏光 Β经过液晶层 105并经反射电极 109反射后可 以通过偏光片 114, 此时， 像素的反射区呈亮态。
通过上述描述可以看出，本发明实施例提供的半透射半反射液晶显示器， 该液晶显示器的透射区和反射区的液晶层厚度相同， 并通过在处于透射区的 液晶层的两侧分别设置透明电极， 并使两个透明电极之间存在一电压差， 该 电压差能够使处于透射区的液晶层的光学延迟由初始设置的 3λ/4改变为 λ/2, 同时，通过紫外线照射光的照射，使处于透射区的液晶层中的感光单体固化， 从而使处于透射区的液晶层在工作时的初始光学延迟固定为 λ/2,而由于像素 的反射区设置有反射电极， 因此处于反射区的液晶层在工作时的初始光学延 迟可保持为初始设置的 3λ/4, 从而使像素的透射区和反射区具有不同的光学 延迟， 进而可以消除像素透射区所发射的光线与反射区所反射的光线之间的 光学延迟， 而且， 本发明实施例提供的半透射半反射液晶显示器中的透射区 和反射区釆用等盒厚设计， 因此制作工艺简单， 从而可降低半透射半反射液 晶显示器的生产工艺难度和制作成本。
以上所述仅是本发明的实施方式， 应当指出， 对于本技术领域的普通技 术人员来说， 在不脱离本发明原理的前提下， 还可以作出若干改进和润饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

权利要求书
1、 一种半透射半反射液晶显示器， 包括：
阵列基板；
彩膜基板， 结合于所述阵列基板；
液晶层， 夹设在所述阵列基板与所述彩膜基板之间， 且所述液晶层包括 液晶分子；
多个像素， 形成在所述阵列基板上， 其中每一个像素包括相邻的透射区 和反射区， 且所述透射区和反射区的所述液晶层厚度相同；
第一透明电极， 形成在所述阵列基板上；
第二透明电极， 在所述透射区形成在所述彩膜基板上，
其中所述透射区的液晶层中还包括被固化的感光单体， 且所述反射区中 为未固化的感光单体， 所述透射区和所述反射区的所述液晶层的厚度相同， 处于透射区的液晶层的初始光学延迟不同于处于反射区的液晶层的初始光学 延迟而使得所述半透射半反射液晶显示器正常显示时从所述反射区和所述透 射区出射的光线具有相等的相位， 所述第一透明电极和所述第二透明电极用 于设置透射区的液晶层的初始光学延迟。
2、根据权利要求 1所述的半透射半反射液晶显示器，其中处于透射区的 液晶层的初始光学延迟为 λ/2, 处于反射区的液晶层的初始光学延迟为 3λ/4, 其中 λ为穿透该液晶层的光的波长。
3、根据权利要求 1所述的半透射半反射液晶显示器，其中所述第一透明 电极由多个条状透明电极块组成， 且所述多个条状透明电极块之间间隔预设 距离。
4、根据权利要求 1所述的半透射半反射液晶显示器，其中在每一个像素 的反射区， 还包括： 设置于所述第一透明电极与所述阵列基板之间的反射电 极。
5、根据权利要求 4所述的半透射半反射液晶显示器，其中所述反射电极 具有反射从所述彩膜基板方向照射进来的外界光线， 以及遮挡从所述阵列基 板方向照射进来的紫外线照射光的功能。
6、根据权利要求 1所述的半透射半反射液晶显示器，其中所述每一个像 素的透射区还包括：
设置于所述阵列基板与所述第一透明电极之间的第三透明电极。
7、根据权利要求 1所述的半透射半反射液晶显示器，其中所述每一个像 素还包括：
设置于所述第二透明电极与所述彩膜基板之间， 以及所述液晶层与所述 彩膜基板之间的第一绝缘层。
8、根据权利要求 6所述的半透射半反射液晶显示器，其中所述每一个像 素还包括：
设置于所述第三透明电极与所述第一透明电极之间的第二绝缘层。
9、根据权利要求 4所述的半透射半反射液晶显示器，其中所述每一个像 素的透射区还包括：
设置于所述阵列基板与所述第一透明电极之间的第三透明电极。
10、 根据权利要求 9所述的半透射半反射液晶显示器， 其中所述每一个 像素还包括：
设置于所述第三透明电极与所述第一透明电极之间以及所述反射电极与 所述第一透明电极之间的第二绝缘层。
11、 根据权利要求 1所述的半透射半反射液晶显示器， 其中
处于透射区的液晶层的初始光学延迟和处于反射区的液晶层的初始光学 延迟为波长的整数倍。
12、 根据权利要求 1所述的半透射半反射液晶显示器， 其中
处于透射区的液晶层的初始光学延迟为 2η·λ/2, 处于反射区的液晶层的 初始光学延迟为 2η·3λ/4, 其中 λ为穿透该液晶层的光的波长， η为正整数。
13、 根据权利要求 1所述的半透射半反射液晶显示器， 其中所述第二透 明电极还在所述反射区中设置在所述彩膜基板上， 且在所述反射区中在所述 第一透明电极与所述阵列基板之间进一步设置的反射层。
14、 一种半透射半反射液晶显示器制作方法， 包括：
制作阵列基板， 该阵列基板上形成有第一透明电极；
制作彩膜基板， 所述半透射半反射液晶显示器的每个像素被分为透射区 和反射区， 其中所述透射区该彩膜基板上形成有第二透明电极；
将液晶层夹设在所述阵列基板与所述彩膜基板之间， 并且在液晶层中掺 入感光单体并进行对盒处理， 使处于透射区和反射区的所述液晶层具有第一 光学延迟；
为所述第一透明电极施加第一电压，为所述第二透明电极施加第二电压， 所述第一电压与所述第二电压之间存在电压差， 所述电压差使处于透射区的 所述液晶层的光学延迟由第一光学延迟变为第二光学延迟； 以及
使用紫外线照射光对所述液晶层进行照射， 使处于透射区的液晶层中的 所述感光单体固化， 从而使处于透射区的光学延迟固定为第二光学延迟， 其中所述第一光学延迟不同于所述第二光学延迟， 使得所述半透射半反 射液晶显示器正常显示时从所述反射区和所述透射区出射的光线具有相等的 相位。
15、根据权利要求 14所述的半透射半反射液晶显示器制作方法，还包括： 在所述第一透明电极与所述阵列基板之间设置反射电极。
16、根据权利要求 15所述的半透射半反射液晶显示器制作方法，还包括： 在所述阵列基板与所述第一透明电极之间设置第三透明电极。
17、根据权利要求 14所述的半透射半反射液晶显示器制作方法，还包括： 在所述第二透明电极与所述彩膜基板之间以及所述液晶层与所述彩膜基板之 间设置第一绝缘层。
18、根据权利要求 14所述的半透射半反射液晶显示器制作方法，其中处 于透射区的液晶层的初始光学延迟为 λ/2,处于反射区的液晶层的初始光学延 迟为 3λ/4, 其中 λ为穿透该液晶层的光的波长。
19、根据权利要求 14所述的半透射半反射液晶显示器制作方法，其中处 于透射区的液晶层的初始光学延迟为 2η·λ/2, 处于反射区的液晶层的初始光 学延迟为 2η·3λ/4, 其中 λ为穿透该液晶层的光的波长， η为正整数。
20、根据权利要求 14所述的半透射半反射液晶显示器制作方法，还包括： 将所述第二透明电极设置在所述反射区的所述彩膜基板上， 而且在所述反射 区中在所述第一透明电极与所述阵列基板之间进一步设置反射层。
PCT/CN2012/078868 2011-07-21 2012-07-19 半透射半反射液晶显示器及其制作方法 Ceased WO2013010491A1 (zh)

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