WO2015014079A1 - 透明显示装置 - Google Patents

透明显示装置 Download PDF

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Publication number
WO2015014079A1
WO2015014079A1 PCT/CN2013/089604 CN2013089604W WO2015014079A1 WO 2015014079 A1 WO2015014079 A1 WO 2015014079A1 CN 2013089604 W CN2013089604 W CN 2013089604W WO 2015014079 A1 WO2015014079 A1 WO 2015014079A1
Authority
WO
WIPO (PCT)
Prior art keywords
transparent
display device
electrochromic material
light source
display panel
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/CN2013/089604
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English (en)
French (fr)
Inventor
石岳
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.)
BOE Technology Group Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US14/358,412 priority Critical patent/US9772538B2/en
Publication of WO2015014079A1 publication Critical patent/WO2015014079A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/155—Electrodes
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/1503—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 an electrochromic effect caused by oxidation-reduction reactions in organic liquid solutions, e.g. viologen solutions
    • 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
    • G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers

Definitions

  • Embodiments of the present invention relate to a transparent display device. Background technique
  • a transparent display device on which an image can be realized and an object on the back side thereof is visible.
  • Such a transparent display device can be applied to a vehicle windshield and a residential glass to provide information desired by a user, and therefore, the practicality of such a transparent display device is greatly improved.
  • a conventional transparent display device structure includes a display panel, a system light source on a non-display surface of the display panel, an object placement area on a side of the system light source remote from the display panel, and a polarizing plate on both sides of the display panel.
  • the liquid crystal molecules in the display panel are located.
  • the film layer on the polarizer is processed, and the electric field is controlled by the electric field to change the polarization direction of the light, so that the object in the object placement area can be observed through the display panel under the action of ambient light. That is, you can see the display content of the display panel, and you can also see the items in the area where the items are placed behind the display panel, so as to achieve a transparent display effect.
  • a transparent display device that realizes a transparent display effect by the action of a polarizing plate can achieve a better transparent display effect, but when the transparent display effect is realized, the entire display panel is transparently displayed, and the transparent display cannot be performed in a sub-area. Furthermore, the wider application of the transparent display device is relatively limited. Summary of the invention
  • a transparent display device includes a display panel, a system light source on a non-display surface of the display panel, and an item placement area on a side of the system light source away from the display panel;
  • a package disposed between the system light source and the article placement area, wherein the package is provided with an electrochromic material
  • the electrochromic material in the package can be controlled to switch between the transparent state and the colored state by a sub-region.
  • FIG. 1 is a schematic cross-sectional view of a transparent display device according to an embodiment of the present invention.
  • 2A-2B are respectively a top plan view and a cross-sectional view showing a transparent electrode provided in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a transparent display device for achieving a transparent display according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a transparent display device for implementing a non-transparent display according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a transparent display device for realizing sub-area transparent display according to an embodiment of the present invention. detailed description
  • Electrochromism display refers to an electrochromic material that can stably and reversibly change optical properties under the action of an electric field, and corresponds to photochromism and thermochromism. Typically, this reversible change is between a colorless transparent state and a colored state, or between two different colors.
  • the principle of electrochromism mainly depends on the energy band structure and redox characteristics of the chemical composition of the material. The absorption characteristics of the material in the visible light region are modulated by ion and electron injection and extraction, or the carrier concentration and the plasma oscillation frequency are changed to realize modulation of infrared reflection characteristics.
  • the embodiment of the present invention provides a transparent display device.
  • the transparent display device includes a display panel 1 , a system light source 2 located on a non-display surface of the display panel 1 , and an item located on a side of the system light source 2 away from the display panel 1 .
  • the placement area 6 further includes a package 3 between the system light source and the item placement area 6, wherein the box of the package 3 is provided with an electrochromic material.
  • the electrochromic material undergoes a stable reversible change between a transparent state and a colored state under the action of an electric field.
  • the transparent display device provided by the embodiment of the present invention further includes a control component 4 capable of controlling the sub-region of the electrochromic material in the package 3 to be switched into a transparent state and a colored state.
  • the side of the display panel 1 facing the user is a display surface, and the side of the display panel 1 facing away from the user is a non-display surface.
  • system light source 2 may be a surface light source that emits light over the entire surface, or may be formed by a combination of a light source and a light guide plate.
  • the system light source in the embodiment of the present invention includes a light source 2 and a light guide plate 5, the light guide plate 5 is located on a non-display surface of the display panel 1, and the light source 2 is disposed at an area opposite to at least one side of the light guide plate 5. .
  • a plurality of light sources 2 may be provided, or only one light source 2 may be provided.
  • the light source 2 may be disposed in close contact with the side surface of the light guide plate 5, or may be disposed at a position spaced apart from the side surface of the light guide plate 5.
  • the light source 2 may be in the form of a light emitting diode (LED) particle, an LED light bar, a cold cathode fluorescent lamp (CCFL), or the like, and the invention is not limited thereto.
  • LED light emitting diode
  • CCFL cold cathode fluorescent lamp
  • the size of the package 3 in the embodiment of the present invention is the same as the size of the display panel 1, but the present invention is not limited thereto.
  • the size of the package 3 may be larger than the size of the display panel 1.
  • the package box 3 and the control unit 4 are disposed between the light guide plate 5 and the article placement area 6.
  • the control unit 4 controls the sub-region of the electrochromic material in the package 3 to be switched to a transparent state or a colored state.
  • the electrochromic material exhibits a transparent state
  • light emitted from the object placed in the object placement area 6 can pass through the display panel 1 through the electrochromic material corresponding to the transparent state.
  • the control member 4 controls the electrochromic material to assume a colored state, the light incident on the surface of the electrochromic material is absorbed and cannot pass through the display panel 1. People can't see the items placed in the item placement area. Only the content displayed on the display panel 1 can be seen to achieve a non-transparent display.
  • the transparent display device provided by the embodiment of the invention is disposed between the light guide plate and the object placement area
  • the box includes a package of electrochromic material, and the electrochromic material in the package can be switched to a transparent state and a colored state by sub-region control by the control of the control component, thereby realizing transparent display of the sub-area and improving the transparent display.
  • the scope of application of the device is not limited to.
  • the transparent display device provided in the second embodiment of the present invention will now be described in detail.
  • the package 3 is formed by two transparent substrate substrates.
  • the transparent substrate can be made of a transparent material such as glass, plastic or quartz, and the preparation process is simple.
  • an electrochromic material is disposed in the box, that is, the electrochromic material is disposed between the two transparent substrate, so that the electrochromic material is spread over the inner surfaces of the two transparent substrate substrates of the box. Achromogenic material or an organic-inorganic composite electrochromic material.
  • the organic electrochromic material may be polythiophene and its derivatives, viologen, tetrathiafulvalene, metal phthalocyanine compounds, polyanilines, etc.; electroless electrochromic material may be tungsten trioxide (W0) 3 ), molybdenum trioxide (Mo0 3 ), vanadium pentoxide (V 2 0 5 ), etc.; the organic-inorganic composite electrochromic material may be selected from any combination of the two types of materials listed above. Due to the wide selection of materials, depending on the material selected, it can be placed in the package in different ways. For example, if the selected electrochromic material is liquid, the method of infusion may be used. If the selected electrochromic material is solid, sputtering, coating, etc. may be used.
  • a package box provided with an electrochromic material is selected to realize transparent display of the sub-area.
  • the transmittance in the transparent display state, the transmittance is high, and can reach 85% or more, so that the transmittance of the transparent display device is higher when the transparent display is performed, and the driving voltage for applying an electric field to the electrochromic material is lower. Generally it is 1 ⁇ 2V, so it is more implemented.
  • control component when the control component controls the electrochromic material in the package to switch between the transparent state and the colored state, to realize the transparent display of the transparent display device, the control component can be set to be independent.
  • a transparent electrode group that controls charging or not, and each transparent electrode group includes two transparent electrodes.
  • a plurality of transparent electrodes of the same arrangement may be respectively disposed on the outer surfaces of the two transparent substrate substrates of the package forming package 3, so that two transparent electrodes positioned opposite each other in the box height direction are passed through the leads. It is connected to an external power source to form a transparent electrode group that can be independently controlled for charging or not.
  • the control component 4 includes a plurality of transparent electrode groups capable of being independently controlled to be charged or not. By independently controlling the charging of each transparent electrode group, respectively controlling the position of each transparent electrode group in the package box The electrochromic material in the corresponding region is switched to a transparent state or a colored state, thereby realizing transparent display of the sub-region of the transparent display device.
  • the material of the transparent electrode is selected from the group consisting of Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), and Indium Gallium Zinc Oxide (IGZO).
  • ITO Indium Tin Oxide
  • IZO Indium Zinc Oxide
  • IGZO Indium Gallium Zinc Oxide
  • One or more of the inventions are not limited thereto, and may be transparent electrodes made of other materials.
  • the shape of the transparent electrode in the embodiment of the present invention can be flexibly set to a preset shape according to actual conditions.
  • the two transparent electrodes included in each transparent electrode group may be disposed in a uniform shape. electrode.
  • the transparent electrode is disposed as a rectangular plate-shaped electrode so as to better cover the corresponding area in the package box, and other shapes, such as triangles and polygons, may be selected. And so on, as long as it can fill the display panel relatively.
  • a plurality of transparent electrodes having a rectangular shape and being plate-shaped electrodes are arranged in an array on the outer surfaces of the two transparent substrate substrates of the cartridge to better complete the entire display panel.
  • FIG. 2A is a plan view showing a transparent electrode provided with a rectangular shape and a plate electrode in the embodiment of the present invention.
  • Each rectangular region in FIG. 2A is a transparent electrode, and has a size and shape exactly below it.
  • Another transparent electrode, which constitutes a transparent electrode group 7, as shown in Fig. 2B, each of the transparent electrode groups can individually control the charging or not, thereby enabling the electrochromic material to be switched to a transparent state or a colored state.
  • the arrangement of the transparent electrodes arranged in an array may correspond to the pixel area of the display panel, that is, the arrangement of the pixel areas on the display panel, so as to achieve transparent display. .
  • the transparent electrode group composed of all the transparent electrodes having a rectangular shape and being a plate electrode is not charged, so that the electrochromic material in the entire package is transparent, as shown in FIG.
  • the transparent display device is completely transparent, and the items placed in the object placement area can be seen to realize a completely transparent display of the transparent display device.
  • A When it is necessary to realize a non-transparent display, it has a rectangular shape and is a plate-shaped electrode.
  • the transparent electrode group formed by the bright electrode is charged, so that the electrochromic material in the entire package is colored, so that the light incident on the surface thereof is absorbed and cannot pass through the display panel, as shown in FIG.
  • the display device realizes a non-transparent display, and cannot see the items placed in the object placement area, and only the content displayed on the display panel can be seen.
  • the transparent electrode group corresponding to the transparent display area is powered off, and is not charged, so that the electrochromic material corresponding to the area in the package is transparent, and other areas are presented.
  • the colored state as shown in FIG. 5, at this time, the transparent display device is transparently displayed in a sub-area, and the items in the item placement area corresponding to the transparent state area can be seen.
  • the transparent display device provided by the invention provides a package box containing an electrochromic material in a box between the system light source and the object placement area, and the electrochromic material in the package box can be controlled by charging or not of the transparent electrode group.
  • the sub-area is switched to a transparent state and a colored state, thereby enabling transparent display of the sub-region, thereby improving the application range of the transparent display device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

一种透明显示装置，包括：显示面板（1）；位于显示面板（1）非显示面的系统光源（2）；位于系统光源（2）远离显示面板（1）一侧的物品放置区域（6）；设置于系统光源（2）与物品放置区域（6）之间的封装盒（3），封装盒（3）内包括有电致变色材料；以及可控制封装盒（3）中的电致变色材料以分区域切换为透明态与着色态的控制部件（4）。封装盒（3）内的电致变色材料通过透明电极组的充电与否的控制，能够分区域切换为透明态和着色态，进而能够实现分区域的透明显示，提高了透明显示装置的应用范围。

Description

透明显示装置
技术领域
本发明的实施例涉及一种透明显示装置。 背景技术
随着显示技术的发展和人们对使用便携式信息介质的需求的日益增加， 近年来， 人们对能够在其上实现图像并且使其背面的物体可见的透明显示装 置进行了积极的研究。 这种透明显示装置可以应用到车辆挡风玻璃和住宅玻 璃以提供用户所需的信息， 因此， 此类透明显示装置的实用性大幅度提高。
常规的透明显示装置结构， 包括显示面板、 位于显示面板非显示面的系 统光源、 位于系统光源远离显示面板一侧的物品放置区域以及位于显示面板 外侧两边的偏振片， 显示面板中的液晶分子位于两片偏振片之间， 通过处理 偏光片上的膜层， 并利用电场控制液晶分子转动， 改变光的偏振方向， 使得 在环境光的作用下， 物品放置区域的物品能透过显示面板被观察到， 即， 既 可以看到显示面板的显示内容， 也可看到显示面板后方物品放置区域的物品， 从而达到透明显示效果。
常规技术中通过配合偏振片的作用实现透明显示效果的透明显示装置， 能够取得较好的透明显示效果， 但是在实现透明显示效果时， 整个显示面板 都呈现透明显示， 不能分区域进行透明显示， 进而相对限制了透明显示装置 更加广泛的应用。 发明内容
根据本发明的一方面， 提供一种透明显示装置， 包括显示面板、 位于所 述显示面板非显示面的系统光源； 位于所述系统光源远离所述显示面板一侧 的物品放置区域；
设置于所述系统光源与所述物品放置区域之间的封装盒， 所述封装盒内 设置有电致变色材料； 以及
可控制所述封装盒中的所述电致变色材料以分区域切换为透明态与着色 态的控制部件。 附图说明
以下将结合附图对本发明的实施例进行更详细的说明， 以使本领域普通 技术人员更加清楚地理解本发明， 其中：
图 1为本发明实施例提供的透明显示装置剖面示意图；
图 2A-图 2B分别为本发明实施例中设置有透明电极的俯视示意图与剖面 示意图；
图 3为本发明实施例透明显示装置实现完全透明显示的示意图； 图 4为本发明实施例透明显示装置实现非透明显示的示意图；
图 5为本发明实施例透明显示装置实现分区域透明显示的示意图。 具体实施方式
为使本发明的实施例的目的、 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的实施例的技术方案进行清楚、 完整的描述。 显 然， 所描述的实施例仅是本发明的一部分示例性实施例， 而不是全部的实施 例。 基于所描述的本发明的示例性实施例， 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它实施例都属于本发明的保护范围。
除非另作定义， 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 利要求书中使用的 "第一"、 "第二" 以及类似的词语并不表示任何顺序、 数 量或者重要性， 而只是用来区分不同的组成部分。 同样， "一个"、 "一" 或者 "该" 等类似词语也不表示数量限制， 而是表示存在至少一个。 "包括" 或者 "包含" 等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后 面列举的元件或者物件及其等同，而不排除其他元件或者物件。 "上"、 "下"、 等仅用于表示相对位置关系， 当被描述对象的绝对位置改变后， 则该相对位 置关系也可能相应地改变。
实施例一
电致变色显示 (Electrochromism Display, ECD)是指电致变色材料在电场 作用下， 能够使光学性能产生稳定可逆变化， 与光致变色、 热致变色相对应。 通常， 这种可逆变化是在无色透明态与着色态、 或者两种不同的颜色之间进 行。 电致变色原理主要取决于材料化学组成的能带结构和氧化还原特性， 可 通过离子、 电子的注入和抽去来调制材料在可见光区的吸收特性， 或者改变 载流子浓度和等离子振荡频率， 实现对红外反射特性的调制。
本发明实施例提供一种透明显示装置， 如图 1 所示， 该透明显示装置包 括显示面板 1、位于显示面板 1非显示面的系统光源 2和位于系统光源 2远离 显示面板 1 一侧的物品放置区域 6, 还包括位于系统光源与物品放置区域 6 之间的封装盒 3 ,其中封装盒 3的盒内设置有电致变色材料。 电致变色材料在 电场作用下， 能够在透明态与着色态之间进行稳定的可逆变化。
例如， 本发明实施例提供的透明显示装置还包括能够控制封装盒 3 内的 电致变色材料分区域切换为透明态与着色态的控制部件 4。
其中， 显示面板 1朝向用户观看的一面为显示面， 显示面板 1背离用户 观看的一面为非显示面。
另外， 系统光源 2可以是整个面发光的面光源， 也可以由光源和导光板 等组件配合而成。
例如，请继续参阅图 1 ,本发明实施例中的系统光源包括光源 2和导光板 5 , 导光板 5位于显示面板 1的非显示面， 光源 2设置在与导光板 5至少一个 侧面相对的区域。 并且根据本发明的实施例， 可以设置多个光源 2, 也可以仅 设置一个光源 2。光源 2可以紧贴着导光板 5的侧面设置，也可以在与导光板 5 的侧面具有一定距离的位置处设置。 光源 2 可以采用发光二极管 （Light Emitting Diode, LED )颗粒、 LED灯条、冷阴极荧光灯（ Cold Cathode Fluorescent Lamp, CCFL )等形式， 本发明不限于此。
例如， 本发明实施例中封装盒 3的大小与显示面板 1的大小一致， 但是 本发明不限于此， 例如， 封装盒 3的大小可以比显示面板 1的尺寸大。
例如， 本发明实施例中封装盒 3与控制部件 4设置于导光板 5与物品放 置区域 6之间。 控制部件 4控制封装盒 3内的电致变色材料分区域切换为透 明态或着色态。 当电致变色材料呈现透明态时， 物品放置区域 6 中放置的物 品发出的光可以透过电致变色材料对应呈现透明态的区域， 并透过显示面板 1。 人们可以看到物品放置区域 6中放置的物品， 实现透明显示。 而当控制部 件 4控制电致变色材料呈现着色态时， ^射到电致变色材料表面的光都被 吸收， 不能透过显示面板 1。 人们就不能看到物品放置区域 6放置的物品， 只 能看到显示面板 1显示的内容， 实现非透明显示。
本发明实施例提供的透明显示装置， 在导光板与物品放置区域之间设置 盒内包括有电致变色材料的封装盒， 封装盒内的电致变色材料通过控制部件 的控制， 能够分区域切换为透明态与着色态， 进而能够实现分区域的透明显 示， 提高了透明显示装置的应用范围。
实施例二
现在对本发明的实施例二提供的透明显示装置进行详细说明。
在本发明实施例二中， 封装盒 3 由两块透明衬底基板对盒形成。 透明衬 底基板可以选用玻璃、 塑料或石英等透明材料， 其制备工艺较筒单。 并且在 盒内设置电致变色材料， 即电致变色材料设置于两块透明衬底基板之间， 使 电致变色材料布满对盒的两块透明衬底基板的内表面。 致变色材料或有机-无机复合电致变色材料。 有机电致变色材料可以为聚噻吩 类及其衍生物、 紫罗精类、 四硫富瓦烯、 金属酞菁类化合物、 聚苯胺类等等； 无机电致变色材料可以为三氧化钨（W03 ), 三氧化钼（Mo03 ), 五氧化二钒 ( V205 )等等； 有机-无机复合电致变色材料可以选用上述列举的两类材料的 任意组合。 由于可选择材料较广， 根据选择的材料不同， 可采用不同的方式 将其设置在封装盒内。 例如， 若选择的电致变色材料为液态的， 则可选用灌 注的方式， 若选择的电致变色材料为固态的， 则可选用溅射， 涂覆等方式。
本发明实施例中选用设置有电致变色材料的封装盒， 实现分区域的透明 显示。 在实施时， 在透明显示状态下， 透过率较高， 能够达到 85%以上， 使 得透明显示装置进行透明显示时透过率更高， 并且对电致变色材料施加电场 的驱动电压较低， 一般为 1~2V, 因此， 实现起来更加筒单。
在本发明实施例中， 利用控制部件控制封装盒内的电致变色材料分区域 切换透明态与着色态， 以实现透明显示装置的分区域透明显示时， 可将控制 部件设置为若干个可独立控制充电与否的透明电极组， 每一透明电极组包括 两个透明电极。
在实施时， 可在对盒形成封装盒 3 的两块透明衬底基板的外表面上分别 设置排布方式相同的若干个透明电极， 使得在盒高方向上位置相对的两个透 明电极通过引线与外部电源连接， 构成一个能够被独立控制充电与否的透明 电极组。
控制部件 4 包括若干个能够被独立控制充电与否的透明电极组， 通过独 立控制每个透明电极组的充电与否， 分别控制封装盒内与每个透明电极组位 置相对应区域内的电致变色材料切换为透明态或着色态， 进而实现透明显示 装置的分区域的透明显示。
例如， 本发明实施例中透明电极的材质选自氧化铟锡 ( Indium Tin Oxide, ITO )、氧化铟辞（ Indium Zinc Oxide, IZO )、氧化铟镓辞 ( Indium Gallium Zinc Oxide, IGZO )等材料中的一种或多种， 本发明不限于此， 还可以是其它材料 制作的透明电极。
例如， 本发明实施例中透明电极的形状可以根据实际情况灵活设置为预 设的形状。 为充分利用每个透明电极组中透明电极产生的电场控制电致变色 材料切换为透明态或着色态， 本发明实施例中可以将每一透明电极组包括的 两个透明电极设置成形状一致的电极。
例如， 本发明实施例中将透明电极设置为矩形形状的板状电极， 以使其 控制的封装盒内对应区域， 更好地布满显示面板， 当然也可选用其他的形状， 例如三角形， 多边形等等， 只要其能够相对布满显示面板即可。
例如， 本发明实施例中若干个具有矩形形状且为板状电极的透明电极， 在对盒的两块透明衬底基板外表面上呈阵列排布， 以更好地实现布满整个显 示面板。
图 2A所示为本发明实施例中设置有矩形形状并且为板状电极的透明电 极的俯视图， 图 2A中的每个矩形区域为一个透明电极，在其下方有一个与其 大小、 形状完全一致的另一个透明电极， 二者构成一个透明电极组 7, 如图 2B所示， 每个透明电极组能够单独分别控制充电与否， 进而能够使电致变色 材料分区域切换为透明态或着色态。
例如， 本发明实施例中呈阵列排布的透明电极的排布方式， 可以与显示 面板的像素区域相对应， 即与显示面板上像素区域的排布方式相一致， 以更 好地实现透明显示。
以下将对通过透明电极组的充电与否， 控制电致变色材料分区域切换透 明态与着色态， 使透明显示装置实现透明显示与非透明显示的原理进行说明。
A: 当需要实现透明显示时，对全部具有矩形形状并且为板状电极的透明 电极构成的透明电极组都不充电， 进而使得整个封装盒中的电致变色材料呈 现透明态， 如图 3所示， 此时透明显示装置为完全透明显示， 可以看到物品 放置区域中放置的物品， 实现透明显示装置的完全透明显示。
B: 当需要实现非透明显示时， 对全部具有矩形形状并且为板状电极的透 明电极构成的透明电极组充电， 使整个封装盒中的电致变色材料都呈现着色 态， 使入射到其表面的光都被吸收， 不能透过显示面板， 如图 4所示， 此时 透明显示装置实现非透明显示， 不能看到物品放置区域放置的物品， 只能看 到显示面板显示的内容。
C: 当需要实现分区域的透明显示时， 将与需要透明显示区域对应的透明 电极组断电， 不对其充电， 使封装盒内对应该区域的电致变色材料呈现透明 态， 而其他区域呈现着色态， 如图 5所示， 此时透明显示装置分区域透明显 示， 对应呈现透明态区域的物品放置区域中的物品能够被看到。
本发明提供的透明显示装置， 在系统光源与物品放置区域之间设置盒内 包括有电致变色材料的封装盒， 封装盒内的电致变色材料通过透明电极组的 充电与否的控制， 能够分区域切换为透明态与着色态， 进而能够实现分区域 的透明显示， 提高了透明显示装置的应用范围。
显然， 本领域的普通技术人员可以对本发明进行各种改动和变型而不脱 离本发明的精神和范围。 因此， 所属技术领域的技术人员在无需创造性劳动 的条件下所获得的所有其他实施例、 变体、 改进及其等同物都应属于本发明 的保护范围。

Claims

权利要求书
1、 一种透明显示装置， 包括：
显示面板；
位于所述显示面板的非显示面的系统光源；
位于所述系统光源远离所述显示面板一侧的物品放置区域；
设置于所述系统光源与所述物品放置区域之间的封装盒， 所述封装盒内 设置有电致变色材料； 以及
可控制所述封装盒中的所述电致变色材料以分区域切换为透明态或着色 态的控制部件。
2、 如权利要求 1所述的透明显示装置， 其中所述系统光源包括光源和导 光板， 所述导光板位于所述显示面板的非显示面侧， 所述光源设置在与所述 导光板至少一个侧面相对的区域。
3、 如权利要求 1或 1所述的透明显示装置， 其中所述封装盒由两块透明 衬底基板对盒形成， 且所述电致变色材料设置于所述两块透明衬底基板之间。
4、 如权利要求 1-3中任一项所述的透明显示装置， 其中，
所述两块透明衬底基板的外表面上分别设置有排布方式相同的若干个透 明电极， 并且在盒高方向上位置相对的两个透明电极通过引线与外部电源连 接， 构成一个能够被独立控制充电与否的透明电极组；
所述控制部件包括若干所述透明电极组， 通过独立控制每个透明电极组 的充电与否， 分别控制封装盒内与每个透明电极组位置相对应区域内的电致 变色材料切换为透明态或着色态。
5、 如权利要求 4所述的透明显示装置， 其中每一透明电极组包括的两个 透明电极具有预设的形状并且形状一致。
6、 如权利要求 4或 5任一项所述的透明显示装置， 其中所述透明电极为 具有矩形形状的板状电极。
7、 如权利要求 6所述的透明显示装置， 其中若干个具有矩形形状且为板 状电极的所述透明电极， 在所述透明衬底基板的外表面上呈阵列排布。
8、 如权利要求 7所述的透明显示装置， 其中呈阵列排布的透明电极排布 方式与所述显示面板上像素区域排布方式相一致。
9、 如权利要求 4-8任一项所述的透明显示装置， 其中所述透明电极的材 质选自氧化铟锡、 氧化铟辞、 氧化铟镓辞中的一种或多种。
10、如权利要求 1-9任一项所述的透明显示装置，其中所述电致变色材料 包括有机电致变色材料、 无机电致变色材料或有机-无机复合电致变色材料。
PCT/CN2013/089604 2013-07-31 2013-12-16 透明显示装置 Ceased WO2015014079A1 (zh)

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