WO2018076593A1 - 显示装置 - Google Patents

显示装置 Download PDF

Info

Publication number
WO2018076593A1
WO2018076593A1 PCT/CN2017/076442 CN2017076442W WO2018076593A1 WO 2018076593 A1 WO2018076593 A1 WO 2018076593A1 CN 2017076442 W CN2017076442 W CN 2017076442W WO 2018076593 A1 WO2018076593 A1 WO 2018076593A1
Authority
WO
WIPO (PCT)
Prior art keywords
display device
electrode
light
reflection
upper electrode
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/CN2017/076442
Other languages
English (en)
French (fr)
Inventor
徐元杰
臧鹏程
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
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology 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, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US15/736,746 priority Critical patent/US10712626B2/en
Publication of WO2018076593A1 publication Critical patent/WO2018076593A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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
    • 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
    • G02F1/133345—Insulating layers
    • 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
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • 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 
    • G02F1/19—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 variable-reflection or variable-refraction elements not provided for in groups G02F1/015 - G02F1/169
    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02F1/1514—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 characterised by the electrochromic material, e.g. by the electrodeposited material
    • G02F1/1516—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 characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
    • G02F1/15165—Polymers
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1676—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 
    • G02F1/15—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
    • G02F2001/1555—Counter electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
    • 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
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/09—Function characteristic transflective

Definitions

  • Embodiments of the present invention relate to a display device, and more particularly to a reflective display device or a transflective liquid crystal display device.
  • the reflective display device is a type of display device that realizes a display function by reflecting incident light, and the reflective display device includes, for example, an electronic paper display device, a reflective liquid crystal display device, and the like.
  • the reflective display device can realize the display function by using ambient light, and the backlight can be omitted, so that it is used more and more as a low power consumption display device.
  • the display effect of the reflective display device will be different.
  • the reflective display device has a problem of low brightness and low contrast, and the display effect is poor. Further, the above-described technical problem also exists in the transflective liquid crystal display device.
  • the present application aims to provide a display device capable of improving the brightness and contrast of the display device and enhancing the display effect as compared with the conventional display device.
  • Embodiments of the present invention provide a display device including: oppositely disposed first electrodes and second electrodes configured to be applied between a first electrode and a second electrode by changing An electric field to change a bright state or a dark state of the pixel unit; a reflective member configured to reflect incident light toward the light exiting side of the display device; and a reflection compensating member positioned below the reflective member in the incident light direction to the reflective member The light reflection efficiency is compensated, wherein the light reflection efficiency of the reflection compensation member is set to be larger when the pixel unit is in a bright state than when the pixel unit is in a dark state.
  • the reflection compensating member includes an electrochromic layer, and a light reflection efficiency of the electrochromic layer varies according to a voltage applied thereto.
  • the electrochromic layer is an inorganic electrochromic layer whose material is an oxide of a transition metal element.
  • the electrochromic layer is a VO2 film having a thickness of 500 to 1200 nm and a light reflection efficiency of 95% to 5%.
  • the electrochromic layer is an organic electrochromic layer, the material of which is selected from one or more of the following materials: polythiophenes and derivatives thereof, viologen , tetrathiafulvalene, metal phthalocyanine compounds.
  • the first electrode is an upper electrode of an electronic paper display device
  • the second electrode is a lower electrode of the electronic paper display device
  • an electrophoresis is accommodated between the upper electrode and the lower electrode a liquid containing electrophoretic moving particles in the electrophoresis liquid; and wherein the electrophoretic moving particles are selectively moved to an upper electrode or a lower electrode according to an electric field applied between the upper electrode and the lower electrode, so that the pixel unit presents a bright state Or dark state.
  • the reflective member includes a plurality of hemispherical protrusions disposed toward the lower electrode protrusion, the hemispherical protrusions directing the incident light toward the light exit side of the display device in a total reflection manner Reflecting; and the upper electrode is formed on a convex side of the hemispherical protrusion.
  • the display device further includes: a cover plate disposed on a side of the reflective member opposite to the upper electrode; and a bottom plate disposed at the bottom plate The side of the electrode facing away from the upper electrode is described.
  • the reflection compensating member is disposed on the upper electrode, and the reflection compensating member and the upper electrode are in conductive contact such that voltages of the reflection compensating member and the upper electrode can be synchronously controlled .
  • the upper electrode is provided with an insulating layer, and the reflection compensating member is disposed on the insulating layer such that the reflection compensating member and the upper electrode are electrically insulated, and The voltages of the reflection compensating member and the upper electrode can be separately controlled.
  • a reflection compensating member is used as the upper electrode.
  • the electrophoretic moving particles comprise particles of one polarity.
  • the electrophoretic moving particles comprise particles of both positive and negative polarities.
  • the display device further includes a light source assembly
  • the light source assembly includes: a light guide plate disposed on a side of the reflective member opposite to the upper electrode; And a light emitting unit disposed on a side of the light guide plate such that light is incident into the light guide plate from a side of the light guide plate; wherein the light guide plate is configured to change a direction of light incident from the light emitting unit, such that the light Injection into the reflective member.
  • the display device further includes: a cover plate disposed on a side of the light guide plate facing away from the reflection member; and a bottom plate disposed on the bottom plate One side of the lower electrode facing away from the upper electrode.
  • the first electrode is a pixel electrode of an LCD display device
  • the second electrode is a common electrode of an LCD display device
  • the display device further includes a liquid crystal cell
  • the liquid crystal cell selectively transmits light and blocks light according to a voltage applied between the pixel electrode and the common electrode, thereby causing the pixel unit to assume a bright state or a dark state.
  • the light reflection efficiency of the reflection member is compensated by the reflection compensation member, and the light reflection efficiency of the reflection compensation member is set to be dark when the pixel unit is in a bright state Time is big. Therefore, the brightness of the pixel unit in the bright state can be improved, and at the same time, The contrast of the display device can be improved.
  • FIG. 1 is a schematic structural view of an electronic paper display device according to an embodiment of the present invention.
  • FIG. 1a is a partially enlarged schematic structural view of the electronic paper display device of FIG. 1;
  • FIG. 2 is a schematic structural view of an electronic paper display device according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural view of an electronic paper display device according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural view of an electronic paper display device according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural view of an electronic paper display device according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a reflective liquid crystal display device according to an embodiment of the present invention.
  • Fig. 7 is a schematic structural view of a transflective liquid crystal display device according to another embodiment of the present invention.
  • a layer/element when referred to as being "on" another layer/element, the layer/element may be directly on the other layer/element, or there may be a central layer between them/ element.
  • the layer/element may be "under” the other layer/element when turned to the opposite direction of the one direction.
  • FIG. 1 is a schematic structural view of an electronic paper display device according to an embodiment of the present invention
  • FIG. 1a is a partially enlarged schematic structural view of the electronic paper display device of FIG. 1.
  • the electronic paper display device 100 includes an upper electrode 1 and a lower electrode 2, a reflection member 3, and a reflection compensation member 4 which are disposed opposite to each other.
  • the bright state or the dark state of the pixel unit is changed by changing the electric field applied between the upper electrode 1 and the lower electrode 2.
  • the reflection member 3 is configured to reflect incident light toward the light exit side (upper side in FIG.
  • the reflection compensation member 4 is configured to be positioned below the reflection member 3 in the incident light direction to oppose the reflection member
  • the light reflection efficiency of 3 is compensated, and the light reflection efficiency of the reflection compensation member 4 is set to be larger when the pixel unit is in a bright state than when the pixel unit is in a dark state.
  • light reflection efficiency is defined as the ratio of the amount of reflected light to the amount of incident light.
  • an electrophoretic liquid 5 having a low refractive index is accommodated between the upper electrode 1 and the lower electrode 2, and the electrophoretic moving particles 6 are contained in the electrophoretic liquid 5 .
  • the electrophoretic moving particles 6 are selectively moved to the upper electrode 1 or the lower electrode 2 in accordance with an electric field applied between the upper electrode 1 and the lower electrode 2 by the voltage source 7, so that the pixel unit assumes a bright state or a dark state.
  • the reflecting member 3 includes a plurality of hemispherical projections 30 projecting toward the lower electrode 2, the hemispherical projections 30 totally reflecting the incident light L The mode is reflected toward the light exit side of the display device.
  • the upper electrode 1 is formed on the convex side of each of the hemispherical projections 30.
  • the reflection member 3 is, for example, glass.
  • the upper electrode 1 is, for example, a transparent electrode such as ITO as long as it does not affect the reflection and transmission of light.
  • each of the hemispherical protrusions 30 may correspond to one pixel unit. In other embodiments, a plurality of hemispherical protrusions 30 may also correspond to one pixel unit.
  • the reflection compensating member 4 is disposed on the upper electrode 1 above or below the upper electrode 1, and the reflection compensating member 4 and the upper electrode 1 are electrically conductive.
  • the contact is such that the voltages of the reflection compensating member 4 and the upper electrode 1 can be controlled in synchronization. Therefore, advantageously, the voltage of the reflection compensating member 4 can be controlled by a driving means for controlling the voltages of the upper and lower electrodes of the pixel unit, thereby conveniently adjusting the voltage of the reflection compensating member 4.
  • the reflective display device 100 further includes a cover plate 8 disposed on a side of the reflective member 3 opposite to the upper electrode 1.
  • the cover 8 may be a transparent glass such that ambient light can be incident on the reflective member 3 through the cover 8 from the upper side.
  • the reflective display device 100 may further include a bottom plate 9 disposed on a side of the lower electrode 2 opposite to the upper electrode 1 to support the lower electrode 2.
  • the electrophoretic moving particles 6 are black light absorbing particles and are attached to the lower electrode 2
  • the hemispherical projections 30 form a total reflection of the incident light L, and are reflected upward by the reflected light R.
  • the pixel unit is displayed in a bright state.
  • the electrophoretic moving particles 6 when the electrophoretic moving particles 6 are attached to the upper electrode 1, the electrophoretic moving particles 6 destroy the total reflection condition of the hemispherical projections 30, and the incident light rays L are transmitted through the hemispherical projections 30 and the upper electrode 1, and are absorbed by the electrophoretic moving particles 6. No light is reflected to the light exiting side of the display device 100, so that the pixel unit is displayed in a dark state.
  • the electrophoretic moving particles 6 comprise particles of a polarity such as positive particles or negative particles.
  • a polarity such as positive particles or negative particles.
  • the voltages of the upper and lower electrodes can be controlled accordingly according to the polarity of the electrophoretic moving particles to achieve a bright or dark state of the pixel unit.
  • the electrophoretic moving particles 6 when the pixel unit is in a bright state, ideally, the electrophoretic moving particles 6 are attached to the lower electrode 2, and the hemispherical protrusion 30 is in a total reflection state, and the reflectance should be 100%, and the incident light L All are reflected by the reflected light R.
  • the electrophoretic moving particles 6 when the electrophoretic moving particles 6 are attached to the lower electrode 2, part of the light L1 is transmitted through the hemispherical protrusions 30 and the upper electrode 1 in the total reflection state, and the reflectance is less than 100%.
  • the conventional reflective display device there is a problem that the brightness of the pixel unit is insufficient in the bright state and the contrast of the display device is lowered. especially in In the case where the ambient light is dark, the display device has a poor display effect.
  • the reflection compensating member 4 since the reflection compensating member 4 is provided, the light reflection efficiency of the reflection member 3 is compensated by the reflection compensating member 4, and the light reflection efficiency setting of the reflection compensating member 4 is set. It is larger when the pixel unit is in a bright state than when the pixel unit is in a dark state. In this way, when the pixel unit is in a bright state, the reflection efficiency of the incident light can be increased, and when the pixel unit is in a dark state, the reflection efficiency of the incident light can be reduced, thereby not only improving the brightness of the pixel unit in the bright state, but also improving the brightness of the pixel unit in the bright state. It is also possible to improve the contrast of the reflective display device and improve its display effect.
  • a specific example of the reflection compensating member 4 may include an electrochromic layer whose light reflection efficiency varies depending on the voltage applied thereto.
  • the VO2 electrochromic layer as an example, in the absence of a voltage, it is embodied as transmitted light, which is reflected as light when subjected to a higher voltage, and is reflected in light at an intermediate voltage. Semi-transmissive and semi-reflective, and the reflectance and transmittance to light can be adjusted according to the voltage. Therefore, the reflection efficiency of the reflection member 3 can be selectively compensated by changing the reflection efficiency applied to the electrochromic layer for each pixel.
  • Transition metal (VIB, VIII and Pt) metal element oxides mostly have electrochromic display functions, such as VO2, NiO, WO3, TiO2, etc., under different voltages, transition metal oxides to light Both transmission and/or reflectivity will change. Therefore, the transition metal element oxide can be used as the inorganic electrochromic layer as the reflection compensating member of the embodiment of the present invention.
  • the electrochromic layer as a VO2 film as an example, the thickness can be set between 500 and 1200 nm, and the light reflection efficiency can be varied between 95% and 5%.
  • many rare earth metal compounds such as AgInSbTe phase change films change reflectance when they change from a crystalline state to an amorphous state, and can also be used as a reflectance compensation film of the above embodiment.
  • the electrochromic layer may also be an organic electrochromic layer, the material of which is selected from one or more of the following materials: polythiophenes and derivatives thereof, viologen, tetrathiamethane Alkene, metal phthalocyanine compounds, and the like.
  • the organic electrochromic layer made of the above materials also changes the transmittance and/or reflectance of light under different voltages.
  • the reflection compensating member does not It is limited to the above electrochromic thin film.
  • the electrochromic film there are films such as photochromism, thermochromism, and force discoloration, and the reflectance of these films may also vary depending on setting conditions, and therefore, they may also be used as an implementation of the present invention.
  • the reflection compensation member of the example is not limited to the above electrochromic thin film.
  • the electrochromic film there are films such as photochromism, thermochromism, and force discoloration, and the reflectance of these films may also vary depending on setting conditions, and therefore, they may also be used as an implementation of the present invention.
  • Table 1 shows the numerical values of the reflection efficiency of the electronic paper display device shown in Fig. 1 at different upper electrode voltages without providing the reflection compensating member (electrochromic layer) 4.
  • the electrochromic layer is VO2
  • the lower electrode voltage is 0V
  • the voltage of the upper electrode 1 varies between 0V and 5V.
  • Electrophoretic moving particles 6 are negatively charged.
  • Table 2 shows the values of the reflection efficiency of the electronic paper display device shown in Fig. 1 at different upper electrode voltages.
  • the reflection compensating member 4 adopts a VO2 electrochromic layer, the lower electrode voltage is 5V, and remains unchanged, and the voltage of the upper electrode 1 varies between 0V and 5V.
  • the electrophoretic moving particles 6 are positively charged.
  • the upper electrode voltage and the electrochromic layer voltage are controlled synchronously.
  • the electrophoretic moving particles move upward, and the reflection is the weakest at this time, and the electrochromic layer is also 0V, which does not reflect.
  • the upper electrode voltage is an intermediate voltage, for example, 3V
  • the electrophoretic moving particle portion moves downward.
  • the reflection efficiency of the reflective member itself is 50%
  • the voltage of the electrochromic layer is also 3V, which has a certain reflection effect and is enhanced. Reflection, so the reflection efficiency is 70%.
  • the upper electrode voltage is 5V
  • the electrophoretic moving particles all move downward. At this time, the reflection is the strongest state, the reflection efficiency of the reflective member itself can reach 95%, and the voltage of the electrochromic layer is also 5V, which is to increase the reflectivity. The strongest state, so the overall reflection efficiency is increased to 100%.
  • This case may also correspond to the case where the electrophoretic moving particles are negatively charged, the lower electrode voltage is 0 V, and the upper electrode voltage is varied between -5 and 0 V.
  • the electronic paper display device shown in FIG. 1 has the following advantages: the reflection compensation member 4 is simple in fabrication process, and directly forms a film on the upper electrode 1 by evaporation, sputtering, or the like.
  • the layer can be.
  • the reflection compensating member 4 is formed on all of the light irradiation regions, and can be reflected in the light irradiation region, and the reflection effect is better.
  • the reflection compensating member 4 can be made thin without significantly increasing the thickness of the display screen, and the reflection compensating member 4 is formed on the upper electrode 1 without affecting the movement of particles in the low refractive index medium, and does not affect the response speed of the particles. .
  • the electronic paper display device 100 shown in FIG. 1 has an electrically conductive contact between the reflection compensating member 4 and the upper electrode 1, and the voltages of the reflection compensating member 4 and the upper electrode 1 can be synchronously controlled.
  • the invention is not limited thereto.
  • an insulating layer may be disposed between the reflection compensating member 4 and the upper electrode 1 so that the voltages of the reflection compensating member 4 and the upper electrode 1 can be separately controlled.
  • FIG. 2 shows an example of an electronic paper display device 200 provided with an insulating layer.
  • an insulating layer 15 is disposed on the upper electrode 1
  • the reflection compensating member 4 is disposed on the insulating layer 15 .
  • the reflection compensation member 4 and the upper electrode 1 are electrically insulated from each other.
  • the insulating layer 15 is made of a transparent material so as not to affect the reflection and transmission of light.
  • the voltages applied to the upper electrode 1 and the reflection compensating member 4 can be controlled by the voltage sources 7 and 7', respectively.
  • a separate drive can be provided for controlling the reflection compensation Reimbursement of the voltage of component 4.
  • the voltages of the reflection compensating member 4 and the upper electrode 1 can be separately adjusted, and in particular, the voltage of the reflection compensating member 4 can be individually adjusted, so that the reflection efficiency of the reflection compensating member 4 against incident light can be increased when the pixel unit is in a bright state, and When the pixel unit is in a dark state, the reflection efficiency of the reflection compensation member 4 with respect to the incident light can be reduced regardless of the voltage of the upper electrode 1.
  • the voltage of the reflection compensating member 4 can be more conveniently set to selectively compensate the reflection efficiency of the reflection member 3.
  • Table 3 shows the values of the reflection efficiency of the reflective display device 200 shown in Fig. 2 at different upper electrode voltages and different electrochromic layer voltages.
  • the electrochromic layer is VO2
  • the lower electrode voltage is 0V
  • the upper electrode voltage varies between 0V and 5V
  • the voltage of the electrochromic layer also varies between 0V and 5V.
  • Electrophoretic moving particles 6 are negatively charged.
  • the electronic paper display device 200 of this embodiment can also obtain an effect of improving brightness and contrast.
  • the gradation value that can be controlled is smaller when the electrochromic layer is not used than the electronic paper display device that does not use the electrochromic layer; the gradation value that can be controlled is increased after the electrochromic layer is used .
  • FIG. 3 is a schematic structural view of an electronic paper display device 300 according to another embodiment of the present invention.
  • the electronic paper display device 300 shown in FIG. 3 is similar in structure to the electronic paper display device 100 shown in FIG. 1 except that the electronic paper display device 300 shown in FIG. 3 further includes a light source assembly 10, the light source assembly 10 includes: a light guide plate 11 disposed on a side of the reflective member 3 opposite to the upper electrode 1; and a light emitting unit 12 disposed on a side of the light guide plate 11 so that light is emitted from The side surface of the light guide plate 11 is incident into the light guide plate 11.
  • the light guide plate 11 is configured to change the direction of the light incident from the light emitting unit 12 such that the light is incident substantially perpendicularly to the upper side of the reflective member 3.
  • the light guide plate 11 may include an embedded reflective member or an air bag 13 to effect a change in the direction of the light.
  • the cover 8 may be disposed on a side of the light guide plate 11 facing away from the reflection member 3; the bottom plate 9 may be disposed on a side of the lower electrode 2 facing away from the upper electrode 1.
  • the electronic paper display device 300 can be normally displayed even in the case where the ambient light is dark or there is no ambient light, and has high brightness and contrast.
  • FIG. 4 is a schematic structural view of an electronic paper display device 400 according to another embodiment of the present invention.
  • the electronic paper display device 400 shown in FIG. 4 is similar in structure to the electronic paper display device 100 shown in FIG. 1, except that in the electronic paper display device 400 shown in FIG. 4, the reflection compensating member 4 in FIG.
  • the upper electrode 1 is combined into one component, that is, the reflection compensating member 4 itself functions as an upper electrode.
  • the manufacturing process of the electronic paper display device can be simplified, and the thickness of the display device can be reduced.
  • the electronic paper display device 400 of this embodiment can also obtain an effect of improving brightness and contrast.
  • Table 4 shows the values of the reflection efficiency of the electronic paper display device 400 shown in Fig. 4 at different upper electrode voltages (i.e., electrochromic layer voltages).
  • the electrochromic layer is VO2
  • the lower electrode voltage is 5V, and remains unchanged.
  • the upper electrode (electrochromic layer) voltage varies between 0V and 5V.
  • the electrophoretic moving particles 6 are positively charged.
  • Table 4 corresponds to the reflective structure of the electrochromic layer as the upper electrode.
  • the voltage of the upper electrode electrophoric layer
  • the electrophoretic moving particles are all on, and the electrochromic layer cannot function to increase the reflection efficiency, and the reflection efficiency is 5%.
  • the upper electrode voltage is 3V
  • the electrophoretic moving particles are partially on and partially below, and the electrochromic layer increases the reflection efficiency to a certain extent, and the reflection efficiency is 70%.
  • the upper electrode voltage is 5V, the particles are all below, and the electrochromic layer has the strongest reflection effect, and the reflection efficiency is 100%.
  • This case can also correspond to the case where the electrophoretic moving particles are negatively charged, the lower electrode voltage is 0V, and the upper electrode voltage is -5 to 0V.
  • the electrophoretic moving particles 6 comprise particles of a polarity, such as negatively charged or positively charged particles.
  • the electrophoretic moving particles 6 are moved up and down by controlling the polarity of the upper and lower electrodes to change the bright or dark state of the pixel unit.
  • the invention is not limited thereto.
  • FIG. 5 is a schematic structural view of an electronic paper display device 500 according to another embodiment of the present invention.
  • the electronic paper display device 500 shown in FIG. 5 is similar in structure to the electronic paper display device shown in FIG. 3 or FIG. 4, except that in the electronic paper display device 500 shown in FIG. 5, the electrophoretic moving particles 6 Particles comprising both positive and negative polarities, namely positively charged particles 61 and negatively charged particles 62 are included. Also, the two polar particles are white and black, respectively. Thus, when the polarities of the upper and lower electrodes are changed, the positively charged particles 61 and the negatively charged particles 62 are respectively moved in opposite directions to change the bright or dark state of the pixel unit.
  • the electronic paper display device 500 of this embodiment can also obtain an effect of improving brightness and contrast.
  • FIGS. 1-5 show some specific examples of the structure of the electronic paper display device
  • the structure of the electronic paper display device is not limited to the structure of the above embodiment, but may have any other capable of realizing electricity.
  • the structure of the sub-paper display The effects of the above embodiments can be obtained as long as the concept of the reflection compensating member of the present invention is applied.
  • the reflective display device of the present invention is not limited to the electronic paper display device, but can be applied to any display device that can realize a display function using reflected light.
  • the embodiment in which the present invention is applied to a liquid crystal display device will be described below.
  • FIG. 6 is a schematic structural view of a reflective liquid crystal display device 600 according to an embodiment of the present invention.
  • the reflective liquid crystal display device 600 includes an array substrate 51, an electrochromic layer (reflection compensation member) 52, a reflective layer 53, a pixel electrode layer (first electrode) 54, a liquid crystal layer 55, and color.
  • the incident light L emitted from the ambient light or the external light source is incident on the display side (upper side in the drawing) of the liquid crystal display device 600 into the liquid crystal display device 600, passing through the polarizing plate 59, the 1/4 wave plate 58, and the common electrode layer (
  • the second electrode 57, the color film layer 56, the liquid crystal layer 55, and the pixel electrode layer 54 reach the reflective layer 53, and are reflected upward by the reflected light R through the reflective layer 53 and the electrochromic layer 52.
  • the liquid crystal layer 55 includes a plurality of liquid crystal cells 50, and when the reflected light rays R pass through the respective liquid crystal molecules in the liquid crystal cells 50, the liquid crystal molecules can selectively transmit light and block light according to a voltage applied between the pixel electrodes 54 and the common electrodes 57. Thus, the pixel unit is rendered in a bright or dark state.
  • the electrochromic layer 52 is disposed under the reflective layer 53. Similar to the electronic paper display device, the light reflection efficiency of the electrochromic layer 52 can be varied according to the voltage applied thereto, thereby compensating for the reflection efficiency of the reflective layer 53. Specifically, the electrochromic layer 52 has a high reflection efficiency when the pixel unit is in a bright state, and the electrochromic layer 52 has a low reflection efficiency when the pixel unit is in a dark state. Thus, the reflective liquid crystal display device 500 according to this embodiment also has high display brightness and contrast.
  • FIG. 7 is a schematic structural view of a transflective liquid crystal display device 700 according to another embodiment of the present invention.
  • the transflective liquid crystal display device 700 includes a backlight module 60, an array substrate 61, a pad layer 62, an electrochromic layer (reflection compensation member) 63, and a reflective layer 64 which are sequentially stacked.
  • the transflective liquid crystal display device 700 shown in FIG. 7 is similar in structure to the reflective liquid crystal display device 600 shown in FIG. 6. The main difference is that the transflective liquid crystal display device 700 has a backlight module 60, and The reflective layer 64 and the electrochromic layer 63 are discretely disposed on a portion of the pixel electrode 65.
  • the reflective liquid crystal display device 700 according to this embodiment also has an effect of improving display brightness and contrast.
  • the above embodiments of the present invention provide a display device including: a first electrode and a second electrode disposed opposite to each other, the first electrode and the second electrode being configured to be applied to the first electrode by a change and An electric field between the second electrodes to change a bright state or a dark state of the pixel unit; a reflective member configured to reflect incident light toward the light exiting side of the display device; and a reflection compensating member positioned below the reflective member in the incident light direction The light reflection efficiency of the reflection member is compensated for, wherein the light reflection efficiency of the reflection compensation member is set to be larger when the pixel unit is in a bright state than when the pixel unit is in a dark state.
  • the light reflection efficiency of the reflection member is compensated by the reflection compensation member, and the light reflection efficiency of the reflection compensation member is set to be darker than when the pixel unit is in a bright state
  • the state is big. Therefore, the brightness and/or contrast of the display device can be improved; in addition, the brightness adjustment range of the display device is also increased.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Inorganic Chemistry (AREA)

Abstract

一种显示装置（100），包括：相对设置的第一电极（1）和第二电极（2），第一电极（1）和第二电极（2）构造成通过改变施加到第一电极（1）和第二电极（2）之间的电场来改变像素单元的亮态或暗态；反射构件（3），构造成将入射光朝向显示装置（100）的出光侧反射；以及反射补偿构件（4），沿入射光方向位于反射构件（3）的下方，以对反射构件（3）的光反射效率进行补偿，其中，反射补偿构件（4）的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。能够提高显示装置（100）亮度和对比度。

Description

显示装置
相关申请的交叉引用
本申请要求于2016年10月28日递交中国专利局的、申请号为201610970742.6的中国专利申请的权益，该申请的全部公开内容以引用方式并入本文。
技术领域
本发明的实施例涉及一种显示装置，更具体地涉及一种反射型显示装置或半透半反射型液晶显示装置。
背景技术
反射型显示装置是通过反射入射光线而实现显示功能的一类显示装置，反射型显示装置例如包括电子纸显示装置、反射型液晶显示装置等。
反射型显示装置可以利用环境光实现显示功能，可以省略背光源，因此作为一种低功耗的显示装置得到了越来越多的应用。但是，受环境光强度变化的影响，反射型显示装置的显示效果也会不同。特别是在光线较暗的条件下，反射型显示装置存在亮底低、对比度低的问题，显示效果较差。此外，半透半反射型液晶显示装置也存在上述技术问题。
发明内容
本申请旨在提供一种显示装置，相较于传统显示装置，能够提高显示装置的亮度和对比度，增强显示效果。
本发明的实施例提供了一种显示装置，包括：相对设置的第一电极和第二电极，所述第一电极和第二电极构造成通过改变施加到第一电极和第二电极之间的电场来改变像素单元的亮态或暗态；反射构件，构造成将入射光朝向显示装置的出光侧反射；以及反射补偿构件，沿入射光方向位于所述反射构件的下方，以对反射构件的光反射效率进行补偿，其中，所述反射补偿构件的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。
根据本发明的一个示例性的实施例，所述反射补偿构件包括电致变色层，所述电致变色层的光反射效率根据施加到其上的电压而变化。
根据本发明的一个示例性的实施例，所述电致变色层为无机电致变色层，其材料为过渡族金属元素的氧化物。
根据本发明的一个示例性的实施例，所述电致变色层为VO2薄膜，其厚度在500-1200nm，光反射效率在95％到5％之间变化。
根据本发明的一个示例性的实施例，所述电致变色层为有机电致变色层，其材料选自以下材料中的一种或多种：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。
根据本发明的一个示例性的实施例，所述第一电极是电子纸显示装置的上电极，所述第二电极是电子纸显示装置的下电极，在上电极和下电极之间容纳有电泳液，在所述电泳液中含有电泳移动粒子；并且，其中，所述电泳移动粒子根据施加到上电极和下电极之间的电场选择性地移动至上电极或下电极，使得像素单元呈现亮态或暗态。
根据本发明的一个示例性的实施例，所述反射构件包括朝向下电极凸起设置的多个半球形凸起，所述半球形凸起将入射光以全反射的方式朝向显示装置的出光侧反射；并且所述上电极形成在所述半球形凸起的凸面侧。
根据本发明的一个示例性的实施例，所述的显示装置还包括：盖板，所述盖板设置在所述反射构件的背对上电极的一侧；和底板，所述底板设置在所述下电极的背对上电极的一侧。
根据本发明的一个示例性的实施例，所述反射补偿构件设置在上电极上，所述反射补偿构件和上电极之间导电接触，使得所述反射补偿构件和上电极的电压可以被同步控制。
根据本发明的一个示例性的实施例，所述上电极上设置有绝缘层,所述反射补偿构件设置在所述绝缘层上，使得所述反射补偿构件和上电极之间电绝缘，且所述反射补偿构件和上电极的电压能够被分别控制。
根据本发明的一个示例性的实施例，反射补偿构件用作所述上电极。
根据本发明的一个示例性的实施例，所述电泳移动粒子包括一种极性的粒子。
根据本发明的一个示例性的实施例，所述电泳移动粒子包括正负两种极性的粒子。
根据本发明的一个示例性的实施例，所述的显示装置，还包括光源组件，所述光源组件包括：导光板，所述导光板设置在所述反射构件的背对上电极的一侧；和发光单元，所述发光单元设置在所述导光板的侧面，使得光线从导光板的侧面入射到导光板中；其中，所述导光板构造成改变从发光单元入射的光线的方向，使得光线射入反射构件中。
根据本发明的一个示例性的实施例，所述的显示装置，还包括：盖板，所述盖板设置在所述导光板的背对反射构件的一侧；和底板，所述底板设置在所述下电极的背对上电极的一侧。
根据本发明的一个示例性的实施例，所述第一电极是LCD显示装置的像素电极，所述第二电极是LCD显示装置的公共电极，并且，所述显示装置还包括液晶单元，所述液晶单元根据施加到像素电极和公共电极之间的电压选择性地透射光线和阻挡光线，从而使得像素单元呈现亮态或暗态。
根据本发明实施例的显示装置，通过反射补偿构件对反射构件的光反射效率进行补偿，并且，所述反射补偿构件的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。因此，能够提高像素单元在亮态时的亮度，同时， 能够提高显示装置的对比度。
附图说明
为了使本发明的目的、特征及优点能更加明显易懂，下面结合附图和具体实施例对本发明作进一步说明。
图1是根据本发明的一个实施例的电子纸显示装置的结构示意图；
图1a是图1的电子纸显示装置的部分放大结构示意图；
图2是根据本发明的另一个实施例的电子纸显示装置的结构示意图；
图3是根据本发明的另一个实施例的电子纸显示装置的结构示意图；
图4是根据本发明的另一个实施例的电子纸显示装置的结构示意图；
图5是根据本发明的另一个实施例的电子纸显示装置的结构示意图；
图6是根据本发明的一个实施例的反射型液晶显示装置的结构示意图；以及
图7是根据本发明的另一个实施例的半透半反射型液晶显示装置的结构示意图。
具体实施方式
以下，将参照附图来描述本公开的实施例。但是应该理解，这些描述只是示例性的，而并非要限制本公开的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本公开的概念。
在附图中示出了根据本公开实施例的各种结构示意图。这些图并非是按比例绘制的，其中为了清楚表达的目的，放大了某些细节，并且可能省略了某些细节。图中所示出的各种区域、层的形状以及它们之间的相对大小、位置关系仅是示例性的，实际中可能由于制造公差或技术限制而有所偏差，并且本领域技术人员根据实际所需可以另外设计具有不同形状、大小、相对位置的区域/ 层。
在本公开的上下文中，当将一层/元件称作位于另一层/元件“上”时，该层/元件可以直接位于该另一层/元件上，或者它们之间可以存在居中层/元件。另外，如果一层/元件在一个方向上位于另一层/元件“上”，那么当调转至所述一个方向的相反方向时，该层/元件可以位于该另一层/元件“下”。
图1是根据本发明的一个实施例的电子纸显示装置的结构示意图；图1a是图1的电子纸显示装置的部分放大结构示意图。如图1和1a所示，电子纸显示装置100包括相对设置的上电极1和下电极2、反射构件3以及反射补偿构件4。根据如图1所示的实施例，通过改变施加到上电极1和下电极2之间的电场来改变像素单元的亮态或暗态。反射构件3构造为将入射光朝向电子纸显示装置100的出光侧(图1中的上侧)反射，反射补偿构件4构造为沿入射光方向位于所述反射构件3的下方，以对反射构件3的光反射效率进行补偿，并且，所述反射补偿构件4的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。在本申请中，光反射效率定义为反射光量占入射光量的比例。
具体地，在图1所示的电子纸显示装置的实施例中，在上电极1和下电极2之间容纳具有低折射率的电泳液5，在所述电泳液5中含有电泳移动粒子6。所述电泳移动粒子6根据通过电压源7施加到上电极1和下电极2之间的电场选择性地移动至上电极1或下电极2，使得像素单元呈现亮态或暗态。
根据一个具体的实施例，如图1和1a所示，反射构件3包括朝向下电极2凸出设置的多个半球形凸起30，所述半球形凸起30将入射光L以全反射的方式朝向显示装置的出光侧反射。上电极1形成在每个半球形凸起30的凸面侧。反射构件3例如为玻璃。上电极1例如为ITO等透明电极，只要不影响光线的反射和透射即可。根据该实施例，每个半球形凸起30可以对应一个像素单元。在其他实施例中，也可以是多个半球形凸起30对应一个像素单元。
另外，图1示出的电子纸显示装置100中，反射补偿构件4设置在上电极1上，位于上电极1的上方或下方，所述反射补偿构件4和上电极1之间导电 接触，使得所述反射补偿构件4和上电极1的电压可以被同步控制。因此，有利地，可以通过控制像素单元的上电极和下电极的电压的驱动装置来控制反射补偿构件4的电压，从而方便地调节反射补偿构件4的电压。
根据一个具体的实施例，如图1所示，反射型显示装置100还包括盖板8，所述盖板8设置在所述反射构件3的背对上电极1的一侧。盖板8可以为透明玻璃，使得环境光可以从上侧透过盖板8入射到反射构件3上。反射型显示装置100还可以包括底板9，所述底板9设置在所述下电极2的背对上电极1的一侧，以支撑下电极2。如此，可以提供一种具有高亮度和高对比度的电子纸显示装置100。
如图1和1a所示，对于单个像素单元，当电泳移动粒子6为黑色吸光粒子并附着于下电极2上时，半球形凸起30对入射光线L形成全反射，经反射光线R向上反射至显示装置100的出光侧(此处为上侧)，然后被人眼接收，此时，像素单元显示为亮态。相反，当电泳移动粒子6附着到上电极1上，电泳移动粒子6破坏半球形凸起30的全反射条件，入射光线L透过半球形凸起30和上电极1，被电泳移动粒子6吸收，没有光线被反射至显示装置100的出光侧，从而像素单元显示为暗态。
在图1所示的电子纸显示装置中，所述电泳移动粒子6包括一种极性的粒子，例如为正粒子或负粒子。本领域普通技术人员可以理解，可以根据电泳移动粒子的极性，相应地控制上电极和下电极的电压，以实现像素单元的亮态或暗态。
如图1a所示，在像素单元为亮态时，理想情况下，电泳移动粒子6附着在下电极2上，此时半球形凸起30为全反射状态，反射率应为100％，入射光线L全部通过反射光线R反射出去。但实际情况下，电泳移动粒子6附着在下电极2上时，全反射状态下依然有部分光线L1可透过半球形凸起30和上电极1，反射率达不到100％。在这种情况下，对于传统的反射型显示装置，就会造成像素单元在亮态时亮度不够，并且显示装置的对比度下降的问题。特别是在 环境光线较暗的情况下，显示装置的显示效果较差。
相较而言，根据本发明的上述实施例，由于设置了反射补偿构件4，通过反射补偿构件4对反射构件3的光反射效率进行补偿，并且，所述反射补偿构件4的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。这样，在像素单元为亮态时能够增加对入射光线的反射效率，而在像素单元为暗态时能够降低对入射光线的反射效率，从而，不但能够提高像素单元在亮态时的亮度，同时也能够提高反射型显示装置的对比度，提高其显示效果。
反射补偿构件4的具体例子可包括电致变色层，所述电致变色层的光反射效率根据施加到其上的电压而变化。以VO2电致变色层为例，在没有电压的情况下，其体现为透射光线，在经受较高电压的情况下下，其体现为反射光线，而在中间电压下，其体现为对光线进行半透射半反射，且对光线的反射率和透射率可根据电压而调节。因此，可通过针对每个像素改变施加到电致变色层上的电压来调节其反射效率，从而对反射构件3的反射效率进行有选择地补偿。
过渡族(ⅥB族、Ⅷ族及Pt族)金属元素氧化物大都具备电致变色显示功能，如VO2、NiO、WO3、TiO2等，在不同的电压作用下，过渡族金属元素氧化物对光线的透过率和/或反射率都会发生变化。因此，过渡族金属元素氧化物可作为无机电致变色层用作本发明实施例的反射补偿构件。以电致变色层为VO2薄膜为例，其厚度可以设置在500-1200nm之间，光反射效率可在95％到5％之间变化。此外，许多稀土金属化合物如AgInSbTe相变薄膜，其从晶态变化到非晶态时，也会发生反射率的变化，也可以用来作为上述实施例的反射率补偿膜。
根据其它的实施例，电致变色层也可以为有机电致变色层，其材料选自以下材料中的一种或多种：聚噻吩类及其衍生物、紫罗精类、四硫富瓦烯、金属酞菁类化合物等。在不同的电压作用下，上述材料制成的有机电致变色层对光线的透过率和/或反射率也会发生变化。
以上是反射补偿构件的一些具体例子。根据其它实施例，反射补偿构件不 限于上述电致变色薄膜。例如，除电致变色薄膜外，还有光致变色、热致变色、力致变色等薄膜，这些薄膜的反射率也可根据设定条件而变化，因此，它们也可以用作本发明的实施例的反射补偿构件。
表1示出了如图1所示的电子纸显示装置在不设置反射补偿构件(电致变色层)4的情况下在不同的上电极电压下的反射效率的数值。其中,电致变色层为VO2，下电极电压为0V，并保持不变，上电极1的电压在0V和5V之间变化。电泳移动粒子6带负电。
表1
上电极电压 反射效率
0V 95％
1V 80％
2V 60％
3V 40％
4V 20％
5V 5％
表2示出了如图1所示的电子纸显示装置在不同的上电极电压下的反射效率的数值。其中，反射补偿构件4采用VO2电致变色层，下电极电压为5V，并保持不变，上电极1的电压在0V和5V之间变化。电泳移动粒子6带正电。上电极电压和电致变色层电压被同步控制。
当上电极的电压为0V，电泳移动粒子往上移动，此时为反射最弱，电致变色层也是0V，不起反射作用。当上电极电压为中间电压例如3V时，电泳移动粒子部分往下移动，此时反射构件本身的反射效率为50％，加上电致变色层的电压也是3V,起一定的反射作用，增强了反射，因此反射效率为70％。当上电极电压为5V，电泳移动粒子全部往下移动，此时为反射最强状态，反射构件本身的反射效率可以达到95％，电致变色层的电压也为5V，是增加反射性 能最强的状态，因此将整体的反射效率提高到100％。
这种情况也可对应于电泳移动粒子带负电，下电极电压0V，上电极电压在-5-0V之间变化的情况。
表2
Figure PCTCN2017076442-appb-000001
除了提高显示装置的亮度和对比度之外，如图1所示的电子纸显示装置还具有以下优点：反射补偿构件4制作工艺简单，直接在上电极1上通过蒸镀、溅射等工艺形成膜层即可。另外，反射补偿构件4形成在全部光照射区域上，在光照射区域均能进行反射，反射效果更好。此外，反射补偿构件4可以制作得很薄，不会显著增加显示屏厚度，且反射补偿构件4形成在上电极1上，不会影响低折射率介质中粒子的移动，不影响粒子的响应速度。
虽然图1示出的电子纸显示装置100中，所述反射补偿构件4和上电极1之间导电接触，并且所述反射补偿构件4和上电极1的电压可以被同步控制。但是，本发明不限于此。例如，反射补偿构件4和上电极1之间可以设置绝缘层，以使得反射补偿构件4和上电极1的电压能够被分别控制。
图2示出了设置了绝缘层的电子纸显示装置200的例子。与图1所示的电子纸显示装置100相比，图2的电子纸显示装置200中，在上电极1上设置有绝缘层15，所述反射补偿构件4设置在所述绝缘层15上，使得所述反射补偿构件4和上电极1之间电绝缘。绝缘层15采用透明材料，从而不影响光线的反射和透射。在这种情况下，可以分别通过电压源7和7’控制施加到上电极1和反射补偿构件4的电压。相应地，可以设置单独的驱动装置用于控制反射补 偿构件4的电压。这样，能够分别调节反射补偿构件4和上电极1的电压，特别是能够单独调节反射补偿构件4的电压，使得在像素单元为亮态时能够增加反射补偿构件4对入射光线的反射效率，而在像素单元为暗态时能够降低反射补偿构件4对入射光线的反射效率，而与上电极1的电压无关。从而，能够更加方便地设置反射补偿构件4的电压，以对反射构件3的反射效率进行有选择地补偿。
该实施例的电子纸显示装置200的其它方面与图1所示的电子纸显示装置100相同。
表3示出了如图2所示的反射型显示装置200在不同的上电极电压和不同的电致变色层电压下的反射效率的数值。这里,电致变色层为VO2,下电极电压为0V，并保持不变,上电极电压在0V和5V之间变化，电致变色层的电压也在0V和5V之间变化。电泳移动粒子6带负电。
表3
Figure PCTCN2017076442-appb-000002
如表3可以看出，当增加了电致变色层后，随着电致变色层的电压的升高，显示装置在同一上电极电压下的反射效率有不同程度的提高。特别是，在上电极电压为0V，电致变色层电压为5V时，反射效率可以达到100％。因此，该实施例的电子纸显示装置200同样可以获得提高亮度和对比度的效果。
此外，与不使用电致变色层的电子纸显示装置相比，不使用电致变色层时，能被控制的灰度值较小；使用电致变色层后，能够被控制的灰度值增加。
图3是根据本发明的另一个实施例的电子纸显示装置300的结构示意图。 如图3所示的电子纸显示装置300与图1所示的电子纸显示装置100结构类似，不同之处在于，图3所示的电子纸显示装置300还包括光源组件10，所述光源组件10包括：导光板11，所述导光板11设置在反射构件3的背对上电极1的一侧；和发光单元12，所述发光单元12设置在所述导光板11的侧面，使得光线从导光板11的侧面入射到导光板11中。根据该实施例，所述导光板11构造成改变从发光单元12入射的光线的方向，使得光线大致垂直地入射到反射构件3的上侧。本领域技术人员可以根据需要而设置导光板11的具体结构，例如，导光板11可以包括嵌入式反射元件或空气袋13，以实现光线方向的改变。在该实施例中，盖板8可以设置在所述导光板11的背对反射构件3的一侧；底板9可以设置在下电极2的背对上电极1的一侧。
根据该实施例，由于设置了光源组件，使得电子纸显示装置300即使在环境光较暗或者不存在环境光的情况下也能正常显示，并具有较高的亮度和对比度。
图4是根据本发明的另一个实施例的电子纸显示装置400的结构示意图。如图4所示的电子纸显示装置400与图1所示的电子纸显示装置100结构类似，不同之处在于，图4所示的电子纸显示装置400中，图1中的反射补偿构件4和上电极1合并成一个部件，即，反射补偿构件4本身用作上电极。在这种情况下，可以简化电子纸显示装置的制造过程，并减小显示装置的厚度。该实施例的电子纸显示装置400同样可以获得提高亮度和对比度的效果。
表4示出了如图4所示的电子纸显示装置400在不同的上电极电压(即电致变色层电压)下的反射效率的数值。其中，电致变色层为VO2，下电极电压为5V，并保持不变。上电极(电致变色层)电压在0V和5V之间变化。电泳移动粒子6带正电。
表4
上电极电压 反射效率
0V 5％
1V 33％
2V 50％
3V 70％
4V 90％
5V 100％
表4对应电致变色层作为上电极的反射型结构。当上电极(电致变色层)电压为0V时，电泳移动粒子全部在上，电致变色层不能起到增加反射效率的作用，反射效率为5％。当上电极电压为3V时，电泳移动粒子部分在上，部分在下，电致变色层在一定程度上增加反射效率，反射效率为70％。当上电极电压为5V时，粒子全部在下，电致变色层的反射作用最强，反射效率为100％。
这种情况也可对应电泳移动粒子带负电，下电极电压0V，上电极电压-5到0V的情况。
在图1、2、3和4所示的电子纸显示装置的实施例中，所述电泳移动粒子6包括一种极性的粒子，例如带负电或带正电的粒子。通过控制上下电极的极性来使电泳移动粒子6上下移动，以改变像素单元的亮态或暗态。但是，本发明不限于此。
图5是根据本发明的另一个实施例的电子纸显示装置500的结构示意图。如图5所示的电子纸显示装置500与图3或图4所示的电子纸显示装置结构类似，不同之处在于，图5所示的电子纸显示装置500中，所述电泳移动粒子6包括正负两种极性的粒子，即带正电的粒子61和带负电的粒子62。并且，两种极性的粒子分别为白色和黑色。从而，当改变上下电极的极性时，带正电的粒子61和带负电的粒子62分别向相反的方向移动，以改变像素单元的亮态或暗态。该实施例的电子纸显示装置500同样可以获得提高亮度和对比度的效果。
虽然图1-5示出了电子纸显示装置的结构的一些具体例子，但是，电子纸显示装置的结构不限于上述实施例的结构，而是可以具有任意其它能够实现电 子纸显示的结构。只要应用本发明的反射补偿构件的构思，同样可以获得上述实施例的效果。
此外，虽然以上以电子纸显示装置为例说明了本发明的显示装置的几个实施例。但是，根据本发明的总体构思，本发明的反射型显示装置不限于电子纸显示装置，而是可以应用于任何可以利用反射光线实现显示功能的显示装置。以下说明本发明应用于液晶显示装置的实施例。
图6是根据本发明的一个实施例的反射型液晶显示装置600的结构示意图。如图6所示，反射型液晶显示装置600包括依次层叠的阵列基板51、电致变色层(反射补偿构件)52、反射层53、像素电极层(第一电极)54、液晶层55、彩膜层56、公共电极层(第二电极)57、1/4波片58和偏振片59。
环境光或外部光源发射的入射光线L从液晶显示装置600的显示侧(图中的上侧)入射到液晶显示装置600中，穿过偏振片59、1/4波片58、公共电极层(第二电极)57、彩膜层56、液晶层55和像素电极层54，到达反射层53，并通过反射层53和电致变色层52通过反射光线R被向上反射。液晶层55包括多个液晶单元50，当反射光线R通过液晶单元50中的各个液晶分子时，液晶分子可根据施加到像素电极54和公共电极57之间的电压选择性地透射光线和阻挡光线，从而使得像素单元呈现亮态或暗态。
根据该实施例的反射型液晶显示装置600中，在反射层53下方设置有电致变色层52。与电子纸显示装置类似，电致变色层52的光反射效率可根据施加到其上的电压而变化，从而补偿反射层53的反射效率。具体而言，在像素单元为亮态时，电致变色层52具有高的反射效率，而在像素单元为暗态时电致变色层52具有低的反射效率。从而，根据该实施例的反射型液晶显示装置500也具有高的显示亮度和对比度。
图7是根据本发明的另一个实施例的半透半反射型液晶显示装置700的结构示意图。如图7所示，半透半反射型液晶显示装置700包括依次层叠的背光模块60、阵列基板61、垫层62、电致变色层(反射补偿构件)63、反射层64、 像素电极层(第一电极)65、液晶层66、彩膜层67、公共电极层(第二电极)68、1/4波片69和偏振片70。
图7所示的半透半反射型液晶显示装置700与图6所示的反射型液晶显示装置600的结构类似，主要区别在于，半透半反射型液晶显示装置700具有背光模块60，同时，反射层64和电致变色层63离散地设置在部分像素电极65上。从而，在没有设置反射层64和电致变色层63的像素单元中背光模块60发出的光线Z透射到显示侧，进行透射显示；而在设置有反射层64和电致变色层63的像素单元中，环境光或外部光源发射的入射光线L到达反射层64，并通过反射层64和电致变色层63以反射光线R被向上反射到显示侧，实现反射型显示。本领域普通技术人员可以理解，根据该实施例的反射型液晶显示装置700也具有提高显示亮度和对比度的效果。
如上所述，本发明的上述各实施例提供了一种显示装置，包括：相对设置的第一电极和第二电极，所述第一电极和第二电极构造成通过改变施加到第一电极和第二电极之间的电场来改变像素单元的亮态或暗态；反射构件，构造成将入射光朝向显示装置的出光侧反射；以及反射补偿构件，沿入射光方向位于所述反射构件的下方，以对反射构件的光反射效率进行补偿，其中，所述反射补偿构件的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。
根据本发明各实施例的显示装置，通过反射补偿构件对反射构件的光反射效率进行补偿，并且，所述反射补偿构件的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。因此，能够提高显示装置的亮度和/或对比度；此外，还增加了显示装置的亮度调节范围。
上述实施例仅例示性的说明了本发明的原理及构造，而非用于限制本发明，本领域的技术人员应明白，在不偏离本发明的总体构思的情况下，对本发明所作的任何改变和改进都在本发明的范围内。本发明的保护范围，应如本申请的权利要求书所界定的范围为准。

Claims (16)

  1. 一种显示装置，包括：
    相对设置的第一电极和第二电极，所述第一电极和第二电极构造成通过改变施加到第一电极和第二电极之间的电场来改变像素单元的亮态或暗态；
    反射构件，构造成将入射光朝向显示装置的出光侧反射；以及
    反射补偿构件，沿入射光方向位于所述反射构件的下方，以对反射构件的光反射效率进行补偿，其中，所述反射补偿构件的光反射效率设置为在像素单元为亮态时比在像素单元为暗态时大。
  2. 如权利要求1所述的显示装置，其中，
    所述反射补偿构件包括电致变色层，所述电致变色层的光反射效率根据施加到其上的电压而变化。
  3. 如权利要求2所述的显示装置，其中，所述电致变色层为无机电致变色层，其材料为过渡族金属元素的氧化物。
  4. 如权利要求3所述的显示装置，其中，所述电致变色层为VO2薄膜，其厚度在500-1200nm，光反射效率在95％到5％之间变化。
  5. 如权利要求2所述的显示装置，其中，所述电致变色层为有机电致变色层，其材料选自以下材料中的一种或多种：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。
  6. 如权利要求1-5中任一项所述的显示装置，其中，
    所述第一电极是电子纸显示装置的上电极，所述第二电极是电子纸显示装置的下电极，在上电极和下电极之间容纳有电泳液，在所述电泳液中含有电泳 移动粒子；并且，
    其中，所述电泳移动粒子根据施加到上电极和下电极之间的电场选择性地移动至上电极或下电极，使得像素单元呈现亮态或暗态。
  7. 如权利要求6所述的显示装置，其中，
    所述反射构件包括朝向下电极凸起设置的多个半球形凸起，所述半球形凸起将入射光以全反射的方式朝向显示装置的出光侧反射；并且
    所述上电极形成在所述半球形凸起的凸面侧。
  8. 如权利要求7所述的显示装置，还包括：
    盖板，所述盖板设置在所述反射构件的背对上电极的一侧；和
    底板，所述底板设置在所述下电极的背对上电极的一侧。
  9. 如权利要求7所述的显示装置，其中，所述反射补偿构件设置在上电极上，所述反射补偿构件和上电极之间导电接触，使得所述反射补偿构件和上电极的电压能够被同步控制。
  10. 如权利要求7所述的显示装置，其中，所述上电极上设置有绝缘层,所述反射补偿构件设置在所述绝缘层上，使得所述反射补偿构件和上电极之间电绝缘，且所述反射补偿构件和上电极的电压能够被分别控制。
  11. 如权利要求7所述的显示装置，其中，反射补偿构件用作所述上电极。
  12. 如权利要求6所述的显示装置，其中，所述电泳移动粒子包括一种极性的粒子。
  13. 如权利要求6所述的显示装置，其中，所述电泳移动粒子包括正负两 种极性的粒子。
  14. 如权利要求7所述的显示装置，还包括光源组件，所述光源组件包括：
    导光板，所述导光板设置在所述反射构件的背对上电极的一侧；和
    发光单元，所述发光单元设置在所述导光板的侧面，使得光线从导光板的侧面入射到导光板中；
    其中，所述导光板构造成改变从发光单元入射的光线的方向，使得光线射入反射构件中。
  15. 如权利要求14所述的显示装置，还包括：
    盖板，所述盖板设置在所述导光板的背对反射构件的一侧；和
    底板，所述底板设置在所述下电极的背对上电极的一侧。
  16. 如权利要求1-5中任一项所述的显示装置，其中，
    所述第一电极是LCD显示装置的像素电极，所述第二电极是LCD显示装置的公共电极，并且，
    所述反射型显示装置还包括液晶单元，所述液晶单元根据施加到像素电极和公共电极之间的电压选择性地透射光线和阻挡光线，从而使得像素单元呈现亮态或暗态。
PCT/CN2017/076442 2016-10-28 2017-03-13 显示装置 Ceased WO2018076593A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/736,746 US10712626B2 (en) 2016-10-28 2017-03-13 Display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610970742.6A CN106292092B (zh) 2016-10-28 2016-10-28 反射型显示装置
CN201610970742.6 2016-10-28

Publications (1)

Publication Number Publication Date
WO2018076593A1 true WO2018076593A1 (zh) 2018-05-03

Family

ID=57720992

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/076442 Ceased WO2018076593A1 (zh) 2016-10-28 2017-03-13 显示装置

Country Status (3)

Country Link
US (1) US10712626B2 (zh)
CN (1) CN106292092B (zh)
WO (1) WO2018076593A1 (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106292092B (zh) * 2016-10-28 2017-11-21 京东方科技集团股份有限公司 反射型显示装置
CN106873282B (zh) * 2017-04-01 2019-11-05 京东方科技集团股份有限公司 显示面板及显示装置
CN106918855B (zh) * 2017-04-07 2019-12-20 京东方科技集团股份有限公司 一种反射型显示装置
CN106990638A (zh) * 2017-05-05 2017-07-28 大连龙宁科技有限公司 一种高对比度电泳型显示装置
US11187891B1 (en) * 2017-06-12 2021-11-30 Hrl Laboratories, Llc Spatial light modulator using phase-change matertals with improved fill factor
CN108873551A (zh) * 2018-06-28 2018-11-23 上海中航光电子有限公司 一种显示面板、显示装置及制备方法
CN109683384B (zh) * 2019-02-15 2021-12-07 合肥鑫晟光电科技有限公司 显示面板和显示装置
JP2021039314A (ja) * 2019-09-05 2021-03-11 株式会社ジャパンディスプレイ 照明装置及び表示装置
CN112749588B (zh) * 2019-10-30 2024-11-29 中兴通讯股份有限公司 显示屏模组及终端
CN110782781B (zh) * 2019-11-08 2024-01-12 京东方科技集团股份有限公司 显示模组、显示装置
EP4092472B8 (en) * 2020-01-14 2025-09-03 LG Innotek Co., Ltd. Light route control member and display device comprising same
TWI807728B (zh) * 2022-03-28 2023-07-01 友達光電股份有限公司 電泳顯示裝置及其驅動方法
CN116088224B (zh) * 2023-02-27 2023-06-30 惠科股份有限公司 背光模组、显示装置及显示驱动方法
CN116125701B (zh) * 2023-02-28 2025-05-30 惠科股份有限公司 显示面板和显示装置

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101201523A (zh) * 2006-12-12 2008-06-18 精工爱普生株式会社 显示装置
JP2009265270A (ja) * 2008-04-23 2009-11-12 Nippon Shokubai Co Ltd 電気光学表示装置
US20100172016A1 (en) * 2008-12-29 2010-07-08 Ku Hyun Park Electrophoretic display having high reflectance and contrast
US20110261301A1 (en) * 2010-04-27 2011-10-27 Samsung Electronics Co., Ltd Display device
CN102301274A (zh) * 2009-09-04 2011-12-28 Sk电信有限公司 配备有电致变色过滤器的反射式显示装置
CN102436109A (zh) * 2010-09-29 2012-05-02 财团法人工业技术研究院 反射式显示装置
JP2012141584A (ja) * 2010-12-17 2012-07-26 Ricoh Co Ltd イオン伝導体およびエレクトロクロミック表示装置
CN102944952A (zh) * 2012-11-13 2013-02-27 京东方科技集团股份有限公司 一种彩膜基板及其制作方法和显示面板
CN103529615A (zh) * 2013-11-06 2014-01-22 京东方科技集团股份有限公司 显示面板及其制造方法、显示装置
CN103941468A (zh) * 2014-04-03 2014-07-23 京东方科技集团股份有限公司 一种彩膜基板、液晶显示面板及显示装置
CN104749837A (zh) * 2015-04-24 2015-07-01 京东方科技集团股份有限公司 一种阵列基板及显示装置
CN106292092A (zh) * 2016-10-28 2017-01-04 京东方科技集团股份有限公司 反射型显示装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493430A (en) * 1994-08-03 1996-02-20 Kent Display Systems, L.P. Color, reflective liquid crystal displays
JP3185736B2 (ja) * 1997-11-26 2001-07-11 カシオ計算機株式会社 表示装置
US20080158449A1 (en) * 2006-12-28 2008-07-03 Motorola, Inc. Electric field reduction in display device
FR3003044B1 (fr) * 2013-03-07 2016-07-29 Centre Nat Rech Scient Dispositif electrochrome a quatre ou trois couches
KR101869172B1 (ko) * 2013-09-30 2018-06-19 클리어잉크 디스플레이스, 인코포레이티드 전면발광 반-역반사 디스플레이를 위한 방법 및 장치
RU2670574C2 (ru) * 2014-01-31 2018-10-23 Клеаринк Дисплейз, Инк. Аппаратура и способ для отражающего графического дисплея с диэлектрическим слоем
CN104216177A (zh) * 2014-08-01 2014-12-17 京东方科技集团股份有限公司 一种显示面板、显示装置以及显示面板的制备方法
US11287718B2 (en) * 2015-08-04 2022-03-29 E Ink Corporation Reusable display addressable with incident light

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101201523A (zh) * 2006-12-12 2008-06-18 精工爱普生株式会社 显示装置
JP2009265270A (ja) * 2008-04-23 2009-11-12 Nippon Shokubai Co Ltd 電気光学表示装置
US20100172016A1 (en) * 2008-12-29 2010-07-08 Ku Hyun Park Electrophoretic display having high reflectance and contrast
CN102301274A (zh) * 2009-09-04 2011-12-28 Sk电信有限公司 配备有电致变色过滤器的反射式显示装置
US20110261301A1 (en) * 2010-04-27 2011-10-27 Samsung Electronics Co., Ltd Display device
CN102436109A (zh) * 2010-09-29 2012-05-02 财团法人工业技术研究院 反射式显示装置
JP2012141584A (ja) * 2010-12-17 2012-07-26 Ricoh Co Ltd イオン伝導体およびエレクトロクロミック表示装置
CN102944952A (zh) * 2012-11-13 2013-02-27 京东方科技集团股份有限公司 一种彩膜基板及其制作方法和显示面板
CN103529615A (zh) * 2013-11-06 2014-01-22 京东方科技集团股份有限公司 显示面板及其制造方法、显示装置
CN103941468A (zh) * 2014-04-03 2014-07-23 京东方科技集团股份有限公司 一种彩膜基板、液晶显示面板及显示装置
CN104749837A (zh) * 2015-04-24 2015-07-01 京东方科技集团股份有限公司 一种阵列基板及显示装置
CN106292092A (zh) * 2016-10-28 2017-01-04 京东方科技集团股份有限公司 反射型显示装置

Also Published As

Publication number Publication date
CN106292092B (zh) 2017-11-21
CN106292092A (zh) 2017-01-04
US10712626B2 (en) 2020-07-14
US20180356657A1 (en) 2018-12-13

Similar Documents

Publication Publication Date Title
WO2018076593A1 (zh) 显示装置
US11086183B2 (en) Dimmer, manufacturing method thereof, backlight unit and display device
CN101673525B (zh) 具有有源透反器件的显示装置
CN102466833B (zh) 具有滤色器的显示器件
JP2018041078A (ja) 電子機器、画像表示方法、プログラム、表示システム
TWI551932B (zh) 顯示裝置
US9164303B2 (en) Display device
CN101937156A (zh) 液晶显示器及其制造方法
WO2016138731A1 (zh) 后视镜
CN100504536C (zh) 用于显示器的光薄膜组件
WO2020228214A1 (zh) 液晶显示器
US20200249528A1 (en) Area light source module and control method therefor, and display device
TW200827828A (en) Liquid crystal display device
US20190064616A1 (en) Transflective liquid crystal display
CN210488182U (zh) 一种智能玻璃及显示装置
US8400386B2 (en) Transflective liquid crystal display device
JP2003195362A (ja) 電気泳動表示装置および電子機器
CN118092037A (zh) 显示面板及显示装置
CN222913988U (zh) 透反式显示面板及显示装置
CN205069021U (zh) 画素结构及反射式显示面板
US20240248351A1 (en) Electronic device
CN110504388A (zh) 显示亮度调节装置及显示装置
KR20080014430A (ko) 전기 영동 표시 장치
CN115988934A (zh) 显示模组及显示装置
CN121900076A (zh) 一种具有高对比度和低功耗特性的液晶显示屏

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17863966

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17863966

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 12.09.2019)

122 Ep: pct application non-entry in european phase

Ref document number: 17863966

Country of ref document: EP

Kind code of ref document: A1