WO2015010363A1 - 显示面板、显示装置、显示面板制作方法及显示方法 - Google Patents

显示面板、显示装置、显示面板制作方法及显示方法 Download PDF

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Publication number
WO2015010363A1
WO2015010363A1 PCT/CN2013/084078 CN2013084078W WO2015010363A1 WO 2015010363 A1 WO2015010363 A1 WO 2015010363A1 CN 2013084078 W CN2013084078 W CN 2013084078W WO 2015010363 A1 WO2015010363 A1 WO 2015010363A1
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Prior art keywords
layer
transparent electrode
display
electrode layer
electrophoretic
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PCT/CN2013/084078
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English (en)
French (fr)
Inventor
张春兵
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Priority to US14/379,507 priority Critical patent/US9846344B2/en
Publication of WO2015010363A1 publication Critical patent/WO2015010363A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • 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
    • G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/173—Passive-matrix OLED displays comprising banks or shadow masks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/176—Passive-matrix OLED displays comprising two independent displays, e.g. for emitting information from two major sides of the display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal 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
    • G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays
    • 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
    • G02F1/16757—Microcapsules
    • 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
    • G02F1/16762—Electrodes having three or more electrodes per 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
    • 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
    • G02F1/1679—Gaskets; Spacers; Sealing of cells; Filling or closing of cells
    • G02F1/1681—Gaskets; Spacers; Sealing of cells; Filling or closing of cells having two or more microcells partitioned by walls, e.g. of microcup type
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass

Definitions

  • Display panel display device, display panel manufacturing method and display method
  • Embodiments of the present invention relate to a display panel, a display device, a display panel manufacturing method, and a display method. Background technique
  • the public transportation hub public signboard and the business hall window information display panel require the display device to realize double-sided display so that the user can obtain information; some portable electronic products also require double-sided display to extend the screen space, fast switching and Handle more work.
  • the double-sided display device commonly used in the industry is to affix two single-sided display panels, which are expensive to manufacture; each display panel has its own drive system. That is to say, the conventional double-sided display is realized by a single combination of two independent displays, which is large in size, large in thickness, and large in space.
  • Embodiments of the present invention provide a display panel, a display device, a display panel manufacturing method, and a display method, which avoid the disadvantages of large size, large thickness, independent drive system, high manufacturing cost, and high process requirements of the conventional double-sided display.
  • An aspect of the invention provides a display panel comprising a display layer and two electrophoretic layers, the display layer being located between two electrophoretic layers; the display layer having two display surfaces; Each includes a plurality of electrophoretic cells, and the states of the electrophoretic cells include a transparent state and a non-transparent state.
  • the display layer includes an array including a plurality of pixel units, which correspond to electrophoresis units of each of the two electrophoretic layers.
  • the electrophoresis unit includes two oppositely disposed transparent electrode layers, and the transparent electrode layer is a planar electrode layer or a patterned electrode layer.
  • the transparent electrode layer is parallel to the display layer or the transparent electrode layer is perpendicular to the display layer.
  • a transparent electrode layer perpendicular to the two oppositely disposed transparent electrode layers is further included.
  • the electrophoresis unit includes a liquid and black particles, and the black particles move under the electric field formed by the two oppositely disposed transparent electrode layers to realize a transparent state and a non-transparent state of the electrophoresis unit. Switch.
  • the electrophoresis unit includes a microcapsule, and the liquid and black particles are contained in the microcapsule.
  • the pixel unit is an organic light emitting diode.
  • the organic light emitting diode includes an anode, an organic layer, and a cathode formed on a substrate; the organic layer is located between the anode and the cathode, and the organic layer includes a light emitting layer.
  • Another aspect of the present invention also provides a display device including the above display panel.
  • Still another aspect of the present invention provides a method of fabricating a display panel, comprising: forming a display layer of double-sided display on one side of a first substrate; forming a first layer between the other side of the first substrate and the second substrate An electrophoretic layer, the first electrophoretic layer includes a plurality of electrophoresis units, and the state of the electrophoresis unit includes a transparent state and a non-transparent state; a third substrate is disposed on the display layer; and the third substrate is away from the A second electrophoretic layer is formed between one side of the display layer and the fourth substrate, the second electrophoretic layer includes a plurality of electrophoresis units, and the state of the power electrophoresis includes a transparent state and a non-transparent state.
  • the first electrophoretic layer includes a first transparent electrode layer and a second transparent electrode layer; and the first transparent electrode layer and the second transparent electrode layer are respectively disposed on the first substrate And above the second substrate.
  • the second electrophoretic layer includes a third transparent electrode layer and a fourth transparent electrode layer; and the third transparent electrode layer and the fourth transparent electrode layer are respectively disposed on the third substrate And above the fourth substrate.
  • the first electrophoretic layer includes a first transparent electrode layer, a second transparent electrode layer, and a third transparent electrode layer; and the first transparent electrode layer is disposed on the first substrate or The second transparent electrode layer and the third transparent electrode layer are respectively disposed on two sides of the electrophoresis unit, and the second transparent electrode layer and the third transparent electrode layer are perpendicular to the first A substrate and a second substrate.
  • the second electrophoretic layer includes a fourth transparent electrode layer, a fifth transparent electrode layer, and a sixth transparent electrode layer; and the fourth transparent electrode layer is disposed on the third substrate or
  • the fifth transparent electrode layer and the sixth transparent electrode layer are respectively disposed on two sides of the electrophoresis unit, and the fifth transparent electrode layer and the sixth transparent electrode layer are perpendicular to the first Three substrates and a fourth substrate.
  • microcapsules are provided in the electrophoresis unit, and the microcapsules include liquid and black charged particles.
  • a liquid containing black particles is injected into the electrophoresis unit, and the liquid containing black particles is placed between the first substrate and the second substrate or between the third substrate and the fourth substrate.
  • the forming a display layer of the double-sided display includes: forming an anode on the first substrate; forming a pixel defining layer for separating the pixel regions; and pixel regions in the pixel defining layer separation A hole transport layer, a light emitting layer, an electron transport layer, and a cathode are sequentially formed.
  • Still another aspect of the present invention provides a display method of a display panel, wherein the display panel adopts the above display panel, and the method includes: controlling a state of an electrophoresis unit of the electrophoretic layer to realize single-sided display or Double-sided display.
  • the controlling the state of the electrophoresis unit of the electrophoretic layer to realize single-sided display comprises: controlling all electrophoretic units of one electrophoretic layer to be transparent; controlling all electrophoresis units of another electrophoretic layer to be non-transparent state.
  • the controlling the state of the electrophoresis unit of the electrophoretic layer to achieve double-sided display comprises: controlling an odd-numbered row electrophoresis unit of one electrophoretic layer to be in a transparent state, and the even-numbered row electrophoresis unit being in a non-transparent state;
  • the odd-numbered row electrophoresis cells of one electrophoretic layer are in a non-transparent state, and the even-numbered row electrophoresis cells are in a transparent state;
  • the display layer sub-region displays that odd-numbered rows of pixel cells of the display layer display one picture, and even-numbered pixel units of the display layer display another picture.
  • FIG. 1 is a schematic structural diagram of a display panel according to Embodiment 1 of the present invention
  • 2 is a schematic diagram of a single-sided display of a display panel according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a display panel according to Embodiment 1 of the present invention for achieving double-sided display.
  • FIG. 4 is a schematic diagram of a full transparent display of a display panel according to Embodiment 1 of the present invention
  • FIG. 5 is a schematic structural view of a display panel according to Embodiment 2 of the present invention
  • FIG. 6 is a schematic diagram of a single-sided display of a display panel according to Embodiment 2 of the present invention
  • FIG. 7 is a schematic diagram of a double-sided display of a display panel according to Embodiment 2 of the present invention
  • FIG. 8 is a display panel according to Embodiment 2 of the present invention. Another structural schematic diagram;
  • FIG. 9 is a schematic view showing another structure of a display panel according to Embodiment 2 of the present invention for realizing single-sided display;
  • Fig. 10 is a view showing another configuration of a display panel according to Embodiment 2 of the present invention for realizing double-sided display.
  • 201 first substrate; 202_second substrate; 203—third substrate; 204_fourth substrate; 205—first transparent electrode layer; 2061—second transparent electrode layer; 2062—third transparent electrode layer; Fourth transparent electrode layer; 2081—fifth transparent electrode layer; 2082—sixth transparent electrode layer; 2091—microgel enthalpy; 2092—microcapsule; 2101—black particles; 2102—black particles; 211—pixel defining layer; 212—anode; 213—hole transport layer; 214—light emitting layer; 215—electron transport layer; 216—cathode;
  • Embodiments of the present invention provide a display panel, a display device, a display panel manufacturing method, and a display method.
  • This embodiment provides a display panel including a display layer and two electrophoretic layers.
  • the display layer is located between the two electrophoretic layers; the display layer has two display surfaces for displaying still images or moving images.
  • the display layer includes an array including a plurality of pixel units, each of the electrophoretic layers including a plurality of electrophoretic cells.
  • the state of the electrophoresis unit includes a transparent state and a black state (an example of a non-transparent state).
  • the pixel unit of the display layer corresponds to the electrophoresis unit of each electrophoretic layer, so that the electrophoretic units of the two electrophoretic layers also correspond to each other.
  • the "--corresponding" means that the electrophoresis unit can completely block the light emitted by the corresponding pixel unit when the electrophoresis unit is in the black state, or can completely avoid the light emitted by the corresponding pixel unit when the electrophoresis unit is in the transparent state, so that the Light can exit through the electrophoretic layer.
  • the pixel unit is, for example, an organic light emitting diode (OLED); the organic light emitting diode includes an anode 112, an organic layer, and a cathode 116 formed on a substrate, the organic layer being located between the anode 112 and the cathode 116.
  • the organic layer includes a light emitting layer 114.
  • the organic layer may include a hole transport layer 113 formed over the anode 112, a light emitting layer 114 formed over the hole transport layer 113, and an electron formed on the light emitting layer 114. Transport layer 115.
  • the organic layer may further include other light-emitting auxiliary layers such as an electron blocking layer, a hole blocking layer, and the like. and, The OLED may also include other auxiliary layers such as a light scattering layer, a light exit enhancement layer, and the like.
  • the electrophoretic layer includes a plurality of electrophoresis units, and the electrophoresis unit includes two oppositely disposed transparent electrode layers.
  • the electrophoresis units on the upper and lower surfaces respectively include a microcapsule 1091 and a microcapsule 1092, and the transparent electrode layer is a planar electrode layer (eg, a plate electrode) or a patterned electrode layer (eg, a comb electrode);
  • the microcapsules 1091 include liquid and black particles 1101;
  • the microcapsules 1092 include liquid and black particles 1102.
  • the black particles in the capsule are black charged particles, which can be moved by the electric field formed by the two transparent electrode layers disposed on opposite sides of the capsule to realize the switching between the transparent state and the black state of the electrophoresis unit.
  • the charged particles in the capsule are not limited to black charged particles, but also charged particles of other colors (such as white, red, etc.), as long as the non-transparent state can be achieved, the following takes black charged particles as an example. Description
  • the state of the electrophoresis unit includes a transparent state and a black state.
  • the transparent state refers to controlling the black particles 1101 or the black particles 1102 by an electric field formed by a voltage difference, so that the black particles 1101 or the black particles 1102 avoid the light emitted from the light-emitting layer 114 in the display layer, thereby realizing a still image or a moving image.
  • the black state refers to controlling the black particles 1101 or the black particles 1102 by an electric field formed by a voltage difference, so that the black particles 1101 or the black particles 1102 block the light emitted by the light-emitting layer 114 in the display layer, thereby realizing a still image or a moving image. Display.
  • the display panel of this embodiment can realize single-sided display, double-sided display or full-transparent display, as described below.
  • the second transparent electrode layer 104 and the fourth transparent electrode layer 108 are connected to a reference voltage. Applying a voltage to the third transparent electrode layer 106 corresponding to all the electrophoresis cells of the upper electrophoretic layer (the third transparent electrode layer 106 is a patterned electrode layer), so that the black particles 1102 in the microcapsule 1092 are close to the corresponding third transparent
  • the electrode layer 106 and the black particles 1102 avoid the light emitted by the light layer 114.
  • the electrophoresis unit assumes a transparent state, and the display effect of the display panel can be seen corresponding to the upper side of the display panel.
  • the third transparent electrode layer 106 By applying different voltages, it is possible to control the black particles to be close to or away from the third transparent electrode layer.
  • the first transparent electrode layer 102 is a patterned electrode layer
  • the black particles 1101 in the microcapsule 1091 block the light emitted by the light-emitting layer 114.
  • the electrophoresis unit assumes a black state, and the display effect of the display panel cannot be seen corresponding to the lower side of the display panel.
  • Applying a different voltage to the first transparent electrode layer 102 can control the black particles to approach or away from the first transparent electrode layer 102.
  • FIG. 2 A schematic diagram of the display method of the display panel provided by the embodiment for realizing single-sided display is shown in FIG. 2 .
  • the black electrode in the microcapsule is close to the corresponding transparent electrode layer, and the black particle is emitted from the development layer.
  • the light of the odd-numbered row electrophoresis unit is in a transparent state; the even-numbered rows of the electrophoretic layer (in the direction from left to right are taken as an example), a voltage is applied to the transparent electrode layer corresponding to the electrophoresis unit, so that the black particles in the microcapsule are away from the corresponding The transparent electrode layer, the black particles block the light emitted by the light-emitting layer, and the even-numbered row electrophoresis unit exhibits a black state.
  • the second transparent electrode layer 104 and the fourth transparent electrode layer 108 are connected to a reference voltage. Applying a voltage to the odd-numbered rows of the upper electrophoretic layer (in the left-to-right direction as an example), the third transparent electrode layer 106 corresponding to the electrophoretic cell is applied such that the black particles 1102 in the capsule 1092 are adjacent to the corresponding third transparent electrode layer.
  • the black particle 1102 avoids the light emitted by the light layer 114, and the odd-numbered row electrophoresis unit is in a transparent state; the even-numbered row of the upper electrophoretic layer (in the left-to-right direction is taken as an example)
  • the transparent electrode layer 106 applies a voltage such that the black particles 1102 in the microcapsule 1092 are away from the corresponding third transparent electrode layer 106, and the black particles 1102 block the light emitted by the light emitting layer 114. At this time, the even-numbered row electrophoresis unit exhibits a black state;
  • the black electrode in the microcapsule is away from the corresponding transparent electrode layer, and the black particles block the emitting layer.
  • the odd-line electrophoretic unit exhibits a black state; applying an electric voltage to the even electrode row of the lower electrophoretic layer (in the left-to-right direction) to apply a voltage to the transparent electrode layer corresponding to the electrophoretic cell, so that the black particles in the microcapsule are close to each other.
  • the black particles avoid the light emitted by the light layer, and the even-numbered row electrophoresis unit is in a transparent state.
  • a voltage is applied to the odd-numbered rows of the lower electrophoretic layer (in the direction from left to right) to the first transparent electrode layer 102 corresponding to the electrophoretic cell, so that the black particles 1101 in the microcapsule 1091 are away from the corresponding first
  • the even-numbered rows of the electrophoretic layer (in the left-to-right direction as an example) correspond to the first
  • the transparent electrode layer 102 applies a voltage such that the black particles 1101 in the microcapsules 1091 are close to the corresponding first transparent electrode layer 102, and the black particles 1101 avoid the light emitted by the optical layer 114, and the even-numbered rows of electrophoretic cells assume a transparent state.
  • a pixel unit in the display layer corresponding to the step S21 in which the electrophoresis unit is in a transparent state displays one screen
  • the pixel unit in the display layer corresponding to the electrophoretic unit in the step S22 is in a transparent state to display another screen.
  • the two described pictures of the display layer can display the same image, or can display different images separately.
  • FIG. 1 A schematic diagram of the display method of the display panel provided by the embodiment for realizing double-sided display is shown in FIG.
  • the display panel of the embodiment can also realize a full transparent display, and the images displayed on both sides of the display panel are the same, but the directions are opposite.
  • the specific operation is as follows.
  • FIG. 1 A schematic diagram of a full transparent display of the display panel provided in the first embodiment is shown in FIG. 1
  • the structures of the first transparent electrode layer 102, the second transparent electrode layer 104, the third transparent electrode layer 106, and the fourth transparent electrode layer 108 of the present embodiment are variable as long as the black of the microcapsules 1091 or the microcapsules 1092 can be realized. State or transparent state.
  • Embodiment 1 is a case where the transparent electrode layer is parallel to the display layer. This embodiment improves the structure of the electrophoretic layer on the basis of Example 1. The transparent electrode layer is considered perpendicular to the display layer.
  • the transparent electrode layers perpendicular to the two opposite transparent electrode layers are further disposed between the two opposite transparent electrode layers.
  • the disadvantage of the space utilization of the spherical structure can be avoided, and the transparent state and the black state effect are better.
  • the transparent electrode layer perpendicular to the two oppositely disposed transparent electrode layers it can be divided into two cases.
  • a voltage is applied to the first transparent electrode layer 205, and no voltage is applied to the second transparent electrode layer 2061 and the third transparent electrode layer 2062; so that the black particles 2101 completely cover the surface of the first transparent electrode layer 205. And functioning to block the light-emitting layer 214; at the same time, no voltage is applied to the fourth transparent electrode layer 207, and the fifth transparent electrode layer 2081 and the sixth transparent electrode layer are applied.
  • a voltage is applied to 2082; the black particles 2102 are completely covered on the surfaces of the fifth transparent electrode layer 2081 and the sixth transparent electrode layer 2082, and the light-emitting layer 214 is not shielded from light.
  • the first transparent electrode layer 205 the second transparent electrode layer 2061, the third transparent electrode layer 2062, the fourth transparent electrode layer 207, the fifth transparent electrode layer 2081, and the sixth transparent electrode layer, respectively.
  • the voltage is applied to 2082 such that the light-emitting layer 214 is reversed in the transmission state of the odd-numbered rows and the even-numbered-row pixels to realize double-sided display.
  • the first transparent electrode layer 205 and the second transparent electrode layer are respectively respectively respectively
  • the first transparent electrode layer 2062, the fourth transparent electrode layer 207, the fifth transparent electrode layer 2081 and the sixth transparent electrode layer 2082 are applied with a voltage such that both the upper and lower electrophoretic layers are in a transparent state. 2.
  • a corresponding structural diagram, a schematic diagram for realizing single-sided display, and a schematic diagram of double-sided display are respectively shown in FIG. 8. , Figure 9 and Figure 10.
  • the processes of achieving single-sided display, double-sided display, and full-transparent display are similar when the second substrate 202 and the fourth substrate 204 are located, and are not described herein again.
  • This embodiment provides a display device including the above display panel.
  • the other parts of the display device are of conventional technology and will not be described here.
  • the embodiment further provides a method for fabricating a display panel, the method comprising the following process.
  • S31 forming a display layer of double-sided display on one side of the first substrate.
  • An example of forming a display layer of double-sided display is: forming an anode on a first substrate; forming a pixel defining layer for separating pixel regions; forming a hole transport layer, illuminating sequentially in a pixel region in the pixel defining layer separation Layer, electron transport layer and cathode.
  • the resulting display element is an OLED.
  • S32 forming a first electrophoretic layer between the other side of the first substrate and the second substrate, the first electrophoretic layer comprising a plurality of electrophoresis units, the state of the electrophoretic unit comprising a transparent state and a black state; There is a microcapsule inside.
  • the first electrophoretic layer includes a first transparent electrode layer and a second transparent electrode layer; and the first transparent electrode layer and the second transparent electrode layer are respectively disposed on the first substrate and the second substrate Above.
  • the first electrophoretic layer includes a first transparent electrode layer, a second transparent electrode layer, and a third transparent electrode layer; and the first transparent electrode layer is disposed on the first substrate or the second substrate The second transparent electrode layer and the third transparent electrode layer are respectively disposed on two sides of the electrophoresis unit, and the second transparent electrode layer and the third transparent electrode layer are perpendicular to the first substrate and The second substrate.
  • a third substrate is disposed on the display layer.
  • step S34 forming a second electrophoretic layer between the side of the third substrate remote from the display layer and the fourth substrate, the second electrophoretic layer comprising a plurality of electrophoresis units, the state of the electrophoresis unit comprising a transparent state and a black state.
  • the second electrophoretic layer includes a third transparent electrode layer and a fourth transparent electrode layer; and the third transparent electrode layer and the fourth transparent electrode layer are respectively placed in the third Above the substrate and the fourth substrate.
  • the second electrophoretic layer includes a fourth transparent electrode layer, a fifth transparent electrode layer, and a sixth transparent electrode layer; and the fourth transparent electrode layer is disposed on the third substrate or the fourth substrate
  • the fifth transparent electrode layer and the sixth transparent electrode layer are respectively disposed on two sides of the electrophoresis unit, and the fifth transparent electrode layer and the sixth transparent electrode layer are perpendicular to the third substrate and The fourth substrate.
  • the electrophoresis unit can also inject a liquid containing black particles to achieve the same effect as the microcapsule.
  • the liquid containing black particles is placed between the first substrate and the second substrate or between the third substrate and the fourth substrate.
  • S311 forming a display layer capable of realizing double-sided display on one side of the first substrate.
  • anode 112 on the first substrate 101; forming a pixel defining layer 111 for separating the pixel regions; sequentially forming a hole transport layer 113, a light emitting layer 114, and an electron transport layer 115 in the pixel regions in the pixel defining layer 111 partition And cathode 116.
  • a first transparent electrode layer 102 is formed on the other side of the first substrate 101.
  • the first substrate 101 and the second substrate 103 are disposed opposite to each other, and a first electrophoretic layer is provided between the first transparent electrode layer 102 and the second transparent electrode layer 104, and states of the plurality of electrophoresis units of the first electrophoretic layer Includes transparent and black states.
  • a third substrate is disposed on the display layer.
  • the third substrate 105 is disposed opposite to the fourth substrate 107, wherein a second electrophoretic layer is provided between the third transparent electric layer 106 and the fourth transparent electrode layer 108, and the states of the plurality of electrophoresis units of the second electrophoretic layer Includes transparent and black states.
  • S321 forming a display layer capable of realizing double-sided display on one side of the first substrate.
  • the hole transport layer 213, the light emitting layer 214, the electron transport layer 215, and the cathode 216 are sequentially formed in the pixel regions in the pixel defining layer 211 partition.
  • the first substrate 201 is disposed opposite to the second substrate 202, wherein a first electrophoretic layer is disposed between the first substrate 201 and the second substrate 202, and a state of the plurality of electrophoresis units of the first electrophoretic layer includes a transparent state And a black state; a second transparent electrode layer 2061 and a third transparent electrode layer 2062 are respectively formed on two sides of the electrophoresis unit, and the second transparent electrode layer 2061 and the third transparent electrode layer 2062 are perpendicular to the first substrate 201, respectively. And a second substrate 202.
  • a third substrate 303 is disposed on the display layer.
  • S325 Forming a fourth transparent electrode layer 307 on the fourth substrate 304.
  • the third substrate 303 is disposed opposite to the fourth substrate 304, wherein a second electrophoretic layer is disposed between the third substrate 303 and the fourth substrate 304, and the states of the plurality of electrophoresis units of the second electrophoretic layer include a transparent state And a black state; a fifth transparent electrode layer 2081 and a sixth transparent electrode layer 2082 are respectively formed on both sides of the electrophoresis unit, and the fifth transparent electrode layer 2081 and the sixth transparent electrode layer 2082 are perpendicular to the third substrate 303, respectively. And a fourth substrate 304.
  • the present embodiment also provides a display method of a display panel, which is applicable, for example, to the display panel shown in Figs. 1, 5, and 8. This method is explained below.
  • the state of the electrophoresis unit that controls the electrophoretic layer realizes single-sided display or double-sided display, and the state of the electrophoresis unit includes a transparent state and a black state.
  • An example of controlling the state of the electrophoresis unit of the electrophoretic layer to realize single-sided display includes: S41: making all of the electrophoretic cells of one electrophoretic layer transparent.
  • the upper side display of the display panel is taken as an example, and the corresponding operation is: the second transparent electrode layer 104 and the fourth transparent electrode layer 108 are connected to a reference voltage. Applying a voltage to the third transparent electrode layer 106 corresponding to all the electrophoresis units of the upper electrophoretic layer, so that the black particles 1102 in the microcapsule 1092 are close to the corresponding third transparent electrode layer 106, and the black particles 1102 are emitted from the development layer 114. Light, the electrophoresis unit is in a transparent state, corresponding to the upper side of the display panel See the display effect of the display panel;
  • the corresponding operation is: applying a voltage to the first transparent electrode layer 102 corresponding to all the electrophoresis units of the lower electrophoretic layer, so that the black particles 1101 in the microcapsule 1091 are away from the corresponding first In the transparent electrode layer 102, the black particles 1101 block the light emitted by the light-emitting layer 114.
  • the electrophoresis unit assumes a black state, and the display effect of the display panel cannot be seen corresponding to the lower side of the display panel.
  • FIG. 2 is a schematic diagram of a single-sided display of a display panel according to Embodiment 1 of the present invention.
  • An example of controlling the state of the electrophoresis unit of the electrophoretic layer to realize double-sided display includes: S51: making an odd-numbered row electrophoresis unit of one electrophoretic layer into a transparent state, and an even-numbered row electrophoresis unit being in a black state.
  • the black electrode in the microcapsule is close to the corresponding transparent electrode layer, and the black particle is emitted from the development layer.
  • the light of the odd-numbered row electrophoresis unit is in a transparent state; the even-numbered rows of the electrophoretic layer (in the direction from left to right are taken as an example), a voltage is applied to the transparent electrode layer corresponding to the electrophoresis unit, so that the black particles in the microcapsule are away from the corresponding The transparent electrode layer, the black particles block the light emitted by the light-emitting layer, and the even-numbered row electrophoresis unit exhibits a black state.
  • the upper side of the display panel is taken as an example, and the corresponding operation is: the second transparent electrode layer 104 and the fourth transparent electrode layer 108 are connected to a reference voltage. Applying a voltage to the odd-numbered rows of the upper electrophoretic layer (in the left-to-right direction as an example), the third transparent electrode layer 106 corresponding to the electrophoretic cell is applied such that the black particles 1102 in the microcapsule 1092 are adjacent to the corresponding third transparent electrode.
  • the layer 106, the black particles 1102 avoid the light emitted by the light layer 114, and the odd-numbered row electrophoresis unit is in a transparent state; the even-numbered rows of the upper electrophoretic layer (in the left-to-right direction are taken as an example)
  • the three transparent electrode layers 106 apply a voltage such that the black particles 1102 in the microcapsules 1092 are away from the corresponding third transparent electrode layer 106, and the black particles 1102 block the light emitted by the light-emitting layer 114, and the even-numbered rows of electrophoretic cells assume a black state.
  • S52 making the odd-numbered row electrophoresis unit of another electrophoretic layer be in a black state, and the even-numbered row electrophoresis unit being in a transparent state;
  • the black electrode in the microcapsule is away from the corresponding transparent electrode layer, and the black particles block the emitting layer.
  • the light of the odd-numbered row electrophoresis unit is in a black state; the voltage is applied to the transparent electrode layer corresponding to the electrophoretic unit of the even-numbered rows of the electrophoretic layer (for example, from left to right), so that the black particles in the microcapsule are close to the corresponding The transparent electrode layer, the black particles avoid the light emitted by the light layer, and the even-numbered row electrophoresis unit is in a transparent state.
  • the corresponding operation is: the odd-numbered rows of the lower electrophoretic layer (in the left-to-right direction as an example), the first transparent corresponding to the electrophoresis unit
  • the electrode layer 102 applies a voltage such that the black particles 1101 in the microcapsules 1091 are away from the corresponding first transparent electrode layer 102, and the black particles 1101 block the light emitted by the light-emitting layer 114, and the odd-numbered rows of electrophoretic cells assume a black state;
  • the even rows of the electrophoretic layer (in the direction from left to right) are applied with a voltage corresponding to the first transparent electrode layer 102 corresponding to the electrophoresis unit, so that the black particles 1101 in the capsule 1091 are close to the corresponding first transparent electrode layer 102, black
  • the particle 1101 avoids the light emitted by the light layer 114, and the even-numbered row electrophoresis unit assumes a transparent
  • S53 Display layer sub-area display, the odd-line pixel unit of the display layer displays one picture, and the even-line pixel unit of the display layer displays another picture.
  • a pixel unit in the display layer corresponding to the step S51 in which the electrophoresis unit is in a transparent state displays one screen
  • the pixel unit in the display layer corresponding to the electrophoretic unit in the step S52 is in a transparent state to display another screen.
  • the two described pictures of the display layer can display the same image, or can display different images separately.
  • FIG. 3 is a schematic diagram of a double-sided display of a display panel according to Embodiment 1 of the present invention.
  • the microcapsule in the electrophoresis unit of the electrophoretic layer of the embodiment of the present invention may contain only black particles.
  • microcapsules usually contain black particles and white particles
  • controlling the state of the electrophoretic unit by changing the position of the black particles in the microcapsule, including the transparent state and the black state, thereby realizing double-sided display of the display panel, saving material
  • the cost, while reducing the process requirements, is easy to achieve.
  • the electrophoretic layer structure of the embodiment of the invention has a single tube, a small thickness, and the display layer adopts an organic electroluminescent diode with a small thickness and two display surfaces; the thickness of the entire display panel is reduced; The display layer and the electrophoretic layer cooperate to realize single-sided display or double-sided display of the display panel, or even full transparency display.
  • All the substrates used in the embodiments of the present invention may be either a rigid substrate or a flexible substrate, which further expands the application range of the present invention.

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Abstract

一种显示面板包括显示层和两个电泳层；所述显示层位于两个电泳层之间；所述显示层具有两个显示面；所述两个电泳层每个包括多个电泳单元，所述电泳单元的状态包括透明态和非透明态。该显示面板能够实现单面、双面和全透明显示，且结构简单，厚度可得到降低。

Description

显示面板、 显示装置、 显示面板制作方法及显示方法 技术领域
本发明的实施例涉及一种显示面板、 显示装置、 显示面板制作方法及显 示方法。 背景技术
随着信息传输的进步和电子产品轻薄化的发展， 人们对于显示面板的需 要也在不断变化。 例如， 公共交通枢纽的公示牌、 营业厅窗口信息显示板要 求显示装置能实现双面显示， 以便于用户获得信息； 有的便携式电子产品也 要求实现双面显示， 以延伸画面空间、 快速切换与处理更多工作。 目前， 业 界常用的双面显示装置是将两个单面显示面板对贴而成， 制造费用高； 每个 显示面板具有各自的驱动系统。 也即， 传统的双面显示器是两个独立的显示 器经过筒单组合实现的， 体积大， 厚度大、 占用空间也大。 发明内容
本发明的实施例提供一种显示面板、 显示装置、 显示面板制作方法及显 示方法， 避免传统双面显示器存在的体积大、 厚度大、 驱动系统独立、 制造 费用高、 工艺要求高等不足。
本发明的一个方面提供了一种显示面板， 包括显示层和两个电泳层， 所 述显示层位于两个电泳层之间； 所述显示层具有两个显示面； 所述两个电泳 层每个包括多个电泳单元， 所述电泳单元的状态包括透明态和非透明态。
例如， 在该显示面板中， 所述显示层包括包含多个像素单元的阵列， 所 述像素单元与所述两个电泳层每个的电泳单元——对应。
例如，在该显示面板中，所述电泳单元包括两个相对设置的透明电极层， 所述透明电极层为平面电极层或图案化电极层。
例如， 在该显示面板中， 所述透明电极层与所述显示层平行或所述透明 电极层与所述显示层垂直。
例如， 在该显示面板中， 所述透明电极层与所述显示层垂直时， 所述两 个相对设置的透明电极层之间还包括一个垂直于所述两个相对设置的透明电 极层的透明电极层。
例如， 在该显示面板中， 所述电泳单元包括液体和黑色粒子， 所述黑色 粒子在所述两个相对设置的透明电极层形成的电场作用下移动， 实现电泳单 元透明态和非透明态的切换。
例如， 在该显示面板中， 所述电泳单元包括微胶嚢， 所述液体和黑色粒 子包含在所述微胶嚢内。
例如， 在该显示面板中， 所述像素单元为有机发光二极管。
例如， 在该显示面板中， 所述有机发光二极管包括形成于村底基板之上 的阳极、 有机层和阴极； 所述有机层位于所述阳极和阴极之间， 所述有机层 包括发光层。
本发明的另一个方面还提供了一种显示装置， 显示装置包括上述的显示 面板。
本发明的再一个方面还提供了一种显示面板的制作方法， 包括： 在第一 基板的一侧形成双面显示的显示层； 在第一基板的另一侧和第二基板之间形 成第一电泳层， 所述第一电泳层包括多个电泳单元， 所述电泳单元的状态包 括透明态和非透明态； 在所述显示层之上设置第三基板； 在所述第三基板远 离所述显示层的一侧和第四基板之间形成第二电泳层， 所述第二电泳层包括 多个电泳单元， 所述电源电泳的状态包括透明态和非透明态。
例如， 在该制作方法之中， 所述第一电泳层包括第一透明电极层和第二 透明电极层； 将所述第一透明电极层和第二透明电极层分别置于所述第一基 板和第二基板之上。
例如， 在该制作方法之中， 所述第二电泳层包括第三透明电极层和第四 透明电极层； 将所述第三透明电极层和第四透明电极层分别置于所述第三基 板和第四基板之上。
例如， 在该制作方法之中， 所述第一电泳层包括第一透明电极层、 第二 透明电极层和第三透明电极层； 将所述第一透明电极层置于所述第一基板或 第二基板之上； 将所述第二透明电极层和第三透明电极层分别置于所述电泳 单元的两侧， 所述第二透明电极层和第三透明电极层分别垂直于所述第一基 板和第二基板。 例如， 在该制作方法之中， 所述第二电泳层包括第四透明电极层、 第五 透明电极层和第六透明电极层； 将所述第四透明电极层置于所述第三基板或 第四基板之上； 将所述第五透明电极层和第六透明电极层分别置于所述电泳 单元的两侧， 所述第五透明电极层和第六透明电极层分别垂直于所述第三基 板和第四基板。
例如， 在该制作方法之中， 在所述电泳单元内设置微胶嚢， 所述微胶嚢 包括液体和黑色带电粒子。
例如， 在该制作方法之中， 在所述电泳单元注入含有黑色粒子的液体， 所述含有黑色粒子的液体置于第一基板和第二基板之间或第三基板和第四基 板之间。
例如， 在该制作方法之中， 所述形成双面显示的显示层包括： 在第一基 板上形成阳极； 形成用于分隔像素区域的像素界定层； 在所述像素界定层分 隔中的像素区域依次形成空穴传输层、 发光层、 电子传输层和阴极。
本发明的再另一个方面还提供了一种显示面板的显示方法， 其中， 所述 显示面板采用上述的显示面板， 所述方法包括： 控制所述电泳层的电泳单元 的状态实现单面显示或双面显示。
例如， 在该显示方法中， 所述控制所述电泳层的电泳单元的状态实现单 面显示包括： 控制一个电泳层的全部电泳单元为透明态； 控制另一个电泳层 的全部电泳单元为非透明态。
例如， 在该显示方法中， 所述控制所述电泳层的电泳单元的状态实现双 面显示包括： 控制一个电泳层的奇数行电泳单元为透明态， 偶数行电泳单元 为非透明态； 控制另一个电泳层的奇数行电泳单元为非透明态， 偶数行电泳 单元为透明态；显示层分区域显示，显示层的奇数行像素单元显示一个画面， 显示层的偶数行像素单元显示另一个画面。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1是本发明实施例 1提供的显示面板的结构示意图； 图 2是本发明实施例 1提供的显示面板实现单面显示的示意图； 图 3是本发明实施例 1提供的显示面板实现双面显示的示意图。
图 4是本发明实施例 1提供的显示面板的全透明显示的示意图； 图 5是本发明实施例 2提供的显示面板的结构示意图；
图 6是本发明实施例 2提供的显示面板实现单面显示的示意图； 图 7是本发明实施例 2提供的显示面板实现双面显示的示意图； 图 8是本发明实施例 2提供的显示面板的另一种结构示意图；
图 9是本发明实施例 2提供的显示面板的另一种结构实现单面显示的示 意图；
图 10是本发明实施例 2提供的显示面板的另一种结构实现双面显示的示 意图。
附图标记
101—第一基板； 102—第一透明电极层； 103—第二基板； 104—第二透 明电极层； 105—第三基板； 106—第三透明电极层； 107_第四基板； 108— 第四透明电极层； 1091—微胶嚢； 1092~fi胶嚢； 1101—黑色粒子； 1102— 黑色粒子； 111一像素界定层； 112—阳极； 113_空穴传输层； 114一发光层；
115—电子传输层； 116—阴极；
201—第一基板； 202_第二基板； 203—第三基板； 204_第四基板； 205— 第一透明电极层； 2061—第二透明电极层； 2062—第三透明电极层； 207— 第四透明电极层； 2081—第五透明电极层； 2082—第六透明电极层； 2091— 微胶嚢； 2092—微胶嚢； 2101—黑色粒子； 2102—黑色粒子； 211—像素界 定层； 212—阳极； 213—空穴传输层； 214—发光层； 215—电子传输层； 216— 阴极；
301—第一基板； 302—第二基板； 303—第三基板； 304—第四基板； 305— 第一透明电极层； 3061—第二透明电极层； 3062—第三透明电极层； 307— 第四透明电极层； 3081—第五透明电极层； 3082—第六透明电极层； 3091— 微胶嚢； 3092—微胶嚢； 3101—黑色粒子； 3102—黑色粒子； 311—像素界 定层； 312—阳极； 313—空穴传输层； 314—发光层； 315—电子传输层； 316— 阴极。 具体实施方式
下面结合附图和实施例， 对本发明的具体实施方式作进一步详细描述。 以下实施例用于说明本发明， 但不用来限制本发明的范围。
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。本公开中使用的"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"、 "左"、 "右"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。
本发明的实施例提供了一种显示面板、 显示装置、 显示面板制作方法及 显示方法。
实施例 1
本实施例提供了一种显示面板， 该显示面板包括显示层和两个电泳层。 显示层位于两个电泳层之间； 显示层具有两个显示面， 用于显示静态图 像或动态图像。 所述显示层包括包含多个像素单元的阵列， 所述电泳层每个 包括多个电泳单元。 电泳单元的状态包括透明态和黑色态（非透明态的一个 示例） 。 显示层的像素单元与每个电泳层的电泳单元——对应， 从而两个电 泳层的电泳单元也彼此——对应。 所述 "——对应" 指电泳单元处于黑色态 的时候能够完全挡住对应的像素单元发出来的光线， 或电泳单元处于透明态 的时候能够完全避开对应的像素单元发出来的光线， 使该光线能够通过电泳 层出射。
图 1是本发明实施例 1提供的显示面板的结构示意图。 所述像素单元例 如为有机发光二极管 （OLED ) ； 所述有机发光二极管包括形成于村底基板 之上的阳极 112、 有机层和阴极 116, 所述有机层位于所述阳极 112和阴极 116之间， 所述有机层包括发光层 114。 例如， 所述有机层可以包括形成于所 述阳极 112之上的空穴传输层 113、 形成于所述空穴传输层 113之上的发光 层 114、形成于所述发光层 114之上的电子传输层 115。在一个示例中， 所述 有机层还可以包括其他发光辅助层， 如电子阻挡层、 空穴阻挡层等。 而且， 所述 OLED还可以包括其他的辅助层， 如光散射层、 光出射增强层等。
所述电泳层包括多个电泳单元， 所述电泳单元包括两个相对设置的透明 电极层，位于上下两个表面的电泳单元分别包括微胶嚢 1091和微胶嚢 1092, 所述透明电极层为平面电极层（例如板状电极）或图案化电极层（例如梳状 电极）； 所述微胶嚢 1091包括液体和黑色粒子 1101; 所述微胶嚢 1092包括 液体和黑色粒子 1102。 胶嚢中的黑色粒子为黑色带电粒子， 可以在 胶嚢 两侧相对设置的两个透明电极层形成的电场作用下移动， 实现电泳单元透明 态和黑色态的切换。但是，请注意 胶嚢中的带电粒子不限于黑色带电粒子， 也可以为其他颜色 （例如白色、 红色等） 的带电粒子， 只要能够实现非透明 态即可， 下面均以黑色带电粒子为例进行说明。
所述电泳单元的状态包括透明态和黑色态。 透明态是指通过由电压差形 成的电场对黑色粒子 1101或黑色粒子 1102进行控制， 使得黑色粒子 1101 或黑色粒子 1102避开显示层中的发光层 114发出的光线，实现静态图像或动 态图像的显示；黑色态是指通过由电压差形成的电场对黑色粒子 1101或黑色 粒子 1102进行控制，使得黑色粒子 1101或黑色粒子 1102挡住显示层中的发 光层 114发出的光线， 实现静态图像或动态图像的显示。
本实施例的显示面板能够实现单面显示、 双面显示或全透明显示， 具体 描述如下。
1.单面显示
S11: 使得一个电泳层的全部电泳单元处于透明态。
对一个电泳层的全部电泳单元对应的透明电极层施加电压， 使得微胶嚢 内的黑色粒子靠近对应的透明电极层， 黑色粒子避开发光层发出的光线， 此 时电泳单元呈现透明态，对应显示面板的一侧可以看到显示面板的显示效果。
以让显示面板实现上侧显示为例， 对应的操作为：
第二透明电极层 104和第四透明电极层 108 (第二透明电极层 104和第 四透明电极层 108为平面电极层）接参考电压。 对上侧的电泳层的全部电泳 单元对应的第三透明电极层 106 (第三透明电极层 106为图案化电极层）施 加电压， 使得微胶嚢 1092 内的黑色粒子 1102 靠近对应的第三透明电极层 106,黑色粒子 1102避开发光层 114发出的光线，此时电泳单元呈现透明态， 对应显示面板的上侧可以看到显示面板的显示效果。 对第三透明电极层 106 施加不同的电压， 可以控制黑色粒子靠近或远离第三透明电极层。
S12: 使得另一个电泳层的全部电泳单元处于黑色态。
对另一个电泳层的全部电泳单元对应的透明电极层施加电压， 使得微胶 嚢内的黑色粒子远离对应的透明电极层， 黑色粒子挡住发光层发出的光线， 此时电泳单元呈现黑色态， 对应显示面板的一侧无法看到显示面板的显示效 果。 对应的操作如下所述。
对下侧的电泳层的全部电泳单元对应的第一透明电极层 102施加电压 (第一透明电极层 102为图案化电极层） ， 使得微胶嚢 1091 内的黑色粒子 1101远离对应的第一透明电极层 102,黑色粒子 1101挡住发光层 114发出的 光线， 此时电泳单元呈现黑色态， 对应显示面板的下侧无法看到显示面板的 显示效果。 对第一透明电极层 102施加不同的电压可以控制黑色粒子靠近或 远离第一透明电极层 102。
本实施例提供的显示面板的显示方法实现单面显示的示意图如图 2 所 示。
2.双面显示
S21 : 使得一个电泳层的奇数行电泳单元处于透明态， 偶数行电泳单元 处于黑色态。
对一个的电泳层的奇数行（以从左到右的方向为例） 电泳单元对应的透 明电极层施加电压， 使得微胶嚢内的黑色粒子靠近对应的透明电极层， 黑色 粒子避开发光层发出的光线， 此时奇数行电泳单元呈现透明态； 对该电泳层 的偶数行（以从左到右的方向为例） 电泳单元对应的透明电极层施加电压， 使得微胶嚢内的黑色粒子远离对应的透明电极层， 黑色粒子挡住发光层发出 的光线， 此时偶数行电泳单元呈现黑色态。
例如， 第二透明电极层 104和第四透明电极层 108接参考电压。 对上侧 的电泳层的奇数行（以从左到右的方向为例） 电泳单元对应的第三透明电极 层 106施加电压， 使得 胶嚢 1092内的黑色粒子 1102靠近对应的第三透明 电极层 106, 黑色粒子 1102避开发光层 114发出的光线， 此时奇数行电泳单 元呈现透明态； 对上侧的电泳层的偶数行（以从左到右的方向为例） 电泳单 元对应的第三透明电极层 106施加电压，使得微胶嚢 1092内的黑色粒子 1102 远离对应的第三透明电极层 106 ,黑色粒子 1102遮挡发光层 114发出的光线， 此时偶数行电泳单元呈现黑色态；
S22: 控制另一个电泳层的奇数行电泳单元为黑色态， 偶数行电泳单元 为透明态。
对另一个的电泳层的奇数行（以从左到右的方向为例） 电泳单元对应的 透明电极层施加电压， 使得微胶嚢内的黑色粒子远离对应的透明电极层， 黑 色粒子挡住发光层发出的光线， 此时奇数行电泳单元呈现黑色态； 对下面的 电泳层的偶数行（以从左到右的方向为例） 电泳单元对应的透明电极层施加 电压， 使得微胶嚢内的黑色粒子靠近对应的透明电极层， 黑色粒子避开发光 层发出的光线， 此时偶数行电泳单元呈现透明态。
例如， 对下侧的电泳层的奇数行（以从左到右的方向为例） 电泳单元对 应的第一透明电极层 102施加电压， 使得微胶嚢 1091内的黑色粒子 1101远 离对应的第一透明电极层 102, 黑色粒子 1101挡住发光层 114发出的光线， 此时奇数行电泳单元呈现黑色态； 对该电泳层的偶数行（以从左到右的方向 为例）电泳单元对应的第一透明电极层 102施加电压，使得微胶嚢 1091内的 黑色粒子 1101靠近对应的第一透明电极层 102, 黑色粒子 1101避开发光层 114发出的光线， 此时偶数行电泳单元呈现透明态。
S23: 显示层分区域显示， 显示层的奇数行像素单元显示一个画面， 显 示层的偶数行像素单元显示另一个画面。
显示层中对应步骤 S21中电泳单元为透明态的像素单元显示一个画面， 显示层中对应步骤 S22中电泳单元为透明态的像素单元显示另一个画面。 显 示层的两个所述的画面可以显示相同的图像， 也可以分别显示不同的图像。
本实施例提供的显示面板的显示方法实现双面显示的示意图如图 3 所 示。
3.全透明显示
除了单面显示， 本实施例的显示面板还可以实现全透明显示， 此时显示 面板两侧显示的图像相同， 但是方向相反。 具体操作如下所述。
对第一透明电极层 102施加电压， 使得微胶嚢 1091内的黑色粒子 1101 靠近第一透明电极层 102; 同时， 对第三透明电极层 106施加电压， 使得微 胶嚢 1092内的黑色粒子 1102靠近第三透明电极层 106; 此时， 显示层的所 有像素单元显示一个画面， 即， 显示屏的一侧显示的是正面的图像， 显示屏 的另一侧显示的^ ^面的图像。
本实施例 1提供的显示面板的全透明显示的示意图如图 4所示。
本实施例的第一透明电极层 102、第二透明电极层 104、第三透明电极层 106、 第四透明电极层 108的结构可变， 只要能够实现微胶嚢 1091或微胶嚢 1092的黑色态或透明态即可。
实施例 2
实施例 1是所述透明电极层与所述显示层平行时的情况。 本实施例在实 施例 1的基础上对电泳层的结构进行了改进。 将所述透明电极层与所述显示 层垂直进行考虑。
所述透明电极层与所述显示层垂直时， 所述两个相对设置的透明电极层 之间还包括垂直于所述两个相对设置的透明电极层的透明电极层。在结构下， 可以避免球状结构空间利用率不高的缺点， 透明态和黑色态效果会更好。
根据垂直于所述两个相对设置的透明电极层的透明电极层的位置， 又可 以分为两种情况考虑。
1、 当第一透明电极层 205和第四透明电极层 207分别位于第二基板 202 和第四基板 204时， 对应的结构示意图、 实现单面显示的示意图和双面显示 的示意图分别如图 5、 图 6和图 7所示。
实现单面显示时， 例如， 对第一透明电极层 205施加电压， 不对第二透 明电极层 2061和第三透明电极层 2062施加电压；使得黑色粒子 2101完全覆 盖在第一透明电极层 205的表面， 起到对发光层 214遮光的作用； 同时， 不 对第四透明电极层 207施加电压，对第五透明电极层 2081和第六透明电极层
2082施加电压；使得黑色粒子 2102完全覆盖在第五透明电极层 2081和第六 透明电极层 2082的表面， 不对发光层 214遮光。
实现双面显示时， 例如， 分别对第一透明电极层 205、 第二透明电极层 2061、 第三透明电极层 2062、 第四透明电极层 207、 第五透明电极层 2081 和第六透明电极层 2082施加电压，使得发光层 214在奇数行和偶数行像素的 透过状态相反， 实现双面显示。
而实现全透明显示时， 分别对第一透明电极层 205、 第二透明电极层
2061、 第三透明电极层 2062、 第四透明电极层 207、 第五透明电极层 2081 和第六透明电极层 2082施加电压， 使得上下两个电泳层均呈透明状态。 2、 当第一透明电极层 305和第四透明电极层 307分别位于第一基板 301 和第三基板 303时， 对应的结构示意图、 实现单面显示的示意图和双面显示 的示意图分别如图 8、 图 9和图 10所示。
第一透明电极层 305和第四透明电极层 307分别位于第一基板 301和第 三基板 303时实现单面显示和双面显示的过程和第一透明电极层 205和第四 透明电极层 207分别位于第二基板 202和第四基板 204时实现单面显示、 双 面显示和全透明显示的过程类似， 此处不再赘述。
实施例 3
本实施例提供了一种显示装置， 该显示器包括上述的显示面板。 显示装 置的其他部分属于传统技术， 此处不再赘述。
实施例 4
本实施例还提供了一种显示面板的制作方法， 该方法包括以下工艺。 S31 : 在第一基板的一侧形成双面显示的显示层。
形成双面显示的显示层的一个示例为： 在第一基板上形成阳极； 形成用 于分隔像素区域的像素界定层； 在所述像素界定层分隔中的像素区域依次形 成空穴传输层、 发光层、 电子传输层和阴极。 所得到的显示元件为 OLED。
S32: 在第一基板的另一侧和第二基板之间形成第一电泳层， 所述第一 电泳层包括多个电泳单元， 该电泳单元的状态包括透明态和黑色态； 所述电 泳单元内设置有微胶嚢。
在一个示例中，所述第一电泳层包括第一透明电极层和第二透明电极层； 将所述第一透明电极层和第二透明电极层分别置于所述第一基板和第二基板 之上。 在另一个示例中， 所述第一电泳层包括第一透明电极层、 第二透明电 极层和第三透明电极层； 将所述第一透明电极层置于所述第一基板或第二基 板之上； 将所述第二透明电极层和第三透明电极层分别置于所述电泳单元的 两侧， 所述第二透明电极层和第三透明电极层分别垂直于所述第一基板和第 二基板。
S33: 在所述显示层之上设置第三基板。
S34: 在所述第三基板远离所述显示层的一侧和第四基板之间形成第二 电泳层， 所述第二电泳层包括多个电泳单元， 该电泳单元的状态包括透明态 和黑色态。 对应于步骤 S32, 在一个示例中， 所述第二电泳层包括第三透明电极层 和第四透明电极层； 将所述第三透明电极层和第四透明电极层分别置于所述 第三基板和第四基板之上。 在另一个示例中， 所述第二电泳层包括第四透明 电极层、 第五透明电极层和第六透明电极层； 将所述第四透明电极层置于所 述第三基板或第四基板之上； 将所述第五透明电极层和第六透明电极层分别 置于所述电泳单元的两侧， 所述第五透明电极层和第六透明电极层分别垂直 于所述第三基板和第四基板。
在所述电泳单元也可以注入含有黑色粒子的液体， 达到和微胶嚢一样的 效果。 所述含有黑色粒子的液体置于第一基板和第二基板之间或第三基板和 第四基板之间。
以下参考图 1对本实施例的一个示例的方法说明如下。
S311 : 在第一基板的一侧形成可实现双面显示的显示层。
在第一基板 101上形成阳极 112; 形成用于分隔像素区域的像素界定层 111 ; 在所述像素界定层 111分隔中的像素区域依次形空穴传输层 113、发光 层 114、 电子传输层 115和阴极 116。
S312: 在第一基板 101的另一侧形成第一透明电极层 102。
S313: 在第二基板 103形成第二透明电极层 104。
S314:将第一基板 101与第二基板 103相对设置，在第一透明电极层 102 与第二透明电极层 104之间提供第一电泳层， 所述第一电泳层的多个电泳单 元的状态包括透明态和黑色态。
S315: 所述显示层之上设置第三基板。
S316: 在所述第三基板 105远离所述显示层的一侧形成第三透明电极层
106。
S317: 在第四基板 107上形成第四透明电极层 108;
S318:将第三基板 105与第四基板 107相对设置，其中第三透明电层 106 与第四透明电极层 108之间提供第二电泳层， 所述第二电泳层的多个电泳单 元的状态包括透明态和黑色态。
相应的， 另外一个示例的显示面板的制作方法参考图 5说明如下。
S321 : 在第一基板的一侧形成可实现双面显示的显示层。
在第一基板 201上形成阳极 212; 形成用于分隔像素区域的像素界定层 211 ; 在所述像素界定层 211分隔中的像素区域依次形空穴传输层 213、 发光 层 214、 电子传输层 215和阴极 216。
S322: 在第二基板 202上形成第一透明电极层 205。
S323: 将第一基板 201与第二基板 202相对设置， 其中， 第一基板 201 与第二基板 202之间提供第一电泳层， 所述第一电泳层的多个电泳单元的状 态包括透明态和黑色态； 在电泳单元的两侧分别形成第二透明电极层 2061 和第三透明电极层 2062, 所述第二透明电极层 2061和第三透明电极层 2062 分别垂直于所述第一基板 201和第二基板 202。
S324: 所述显示层之上设置第三基板 303。
S325: 在第四基板 304上形成第四透明电极层 307。
S326: 将第三基板 303与第四基板 304相对设置， 其中， 第三基板 303 与第四基板 304之间提供第二电泳层， 所述第二电泳层的多个电泳单元的状 态包括透明态和黑色态； 在电泳单元的两侧分别形成第五透明电极层 2081 和第六透明电极层 2082, 所述第五透明电极层 2081和第六透明电极层 2082 分别垂直于所述第三基板 303和第四基板 304。
实施例 5
本实施例还提供了一种显示面板的显示方法， 该显示方法例如适用于图 1、 图 5和图 8所示的显示面板。 该方法说明如下。
控制所述电泳层的电泳单元的状态实现单面显示或双面显示， 所述电泳 单元的状态包括透明态和黑色态。
控制所述电泳层的电泳单元的状态实现单面显示的一个示例包括： S41 : 使得一个电泳层的全部电泳单元为透明态。
对一个电泳层的全部电泳单元对应的透明电极层施加电压， 使得微胶嚢 内的黑色粒子靠近对应的透明电极层， 黑色粒子避开发光层发出的光线， 此 时电泳单元呈现透明态，对应显示面板的一侧可以看到显示面板的显示效果。
参照图 1所示的显示面板， 以让显示面板实现上侧显示为例， 对应的操 作为： 第二透明电极层 104和第四透明电极层 108接参考电压。 对上侧的电 泳层的全部电泳单元对应的第三透明电极层 106施加电压，使得微胶嚢 1092 内的黑色粒子 1102靠近对应的第三透明电极层 106, 黑色粒子 1102避开发 光层 114发出的光线， 此时电泳单元呈现透明态， 对应显示面板的上侧可以 看到显示面板的显示效果；
S42: 使得另一个电泳层的全部电泳单元为黑色态。
对另一个电泳层的全部电泳单元对应的透明电极层施加电压， 使得微胶 嚢内的黑色粒子远离对应的透明电极层， 黑色粒子挡住发光层发出的光线， 此时电泳单元呈现黑色态， 对应显示面板的一侧无法看到显示面板的显示效 果。
参照图 1所示的显示面板， 对应的操作为： 对下侧的电泳层的全部电泳 单元对应的第一透明电极层 102施加电压， 使得微胶嚢 1091 内的黑色粒子 1101远离对应的第一透明电极层 102,黑色粒子 1101挡住发光层 114发出的 光线， 此时电泳单元呈现黑色态， 对应显示面板的下侧无法看到显示面板的 显示效果。
图 2是本发明实施例 1提供的显示面板实现单面显示的示意图。
控制所述电泳层的电泳单元的状态实现双面显示的一个示例包括： S51 : 使得一个电泳层的奇数行电泳单元为透明态， 偶数行电泳单元为 黑色态。
对一个的电泳层的奇数行（以从左到右的方向为例） 电泳单元对应的透 明电极层施加电压， 使得微胶嚢内的黑色粒子靠近对应的透明电极层， 黑色 粒子避开发光层发出的光线， 此时奇数行电泳单元呈现透明态； 对该电泳层 的偶数行（以从左到右的方向为例） 电泳单元对应的透明电极层施加电压， 使得微胶嚢内的黑色粒子远离对应的透明电极层， 黑色粒子挡住发光层发出 的光线， 此时偶数行电泳单元呈现黑色态。
参考图 1所示的显示面板， 以显示面板上侧显示为例， 对应的操作为： 第二透明电极层 104和第四透明电极层 108接参考电压。 对上侧的电泳层的 奇数行（以从左到右的方向为例） 电泳单元对应的第三透明电极层 106施加 电压，使得微胶嚢 1092内的黑色粒子 1102靠近对应的第三透明电极层 106, 黑色粒子 1102避开发光层 114发出的光线，此时奇数行电泳单元呈现透明态； 对上侧的电泳层的偶数行（以从左到右的方向为例） 电泳单元对应的第三透 明电极层 106施加电压， 使得微胶嚢 1092内的黑色粒子 1102远离对应的第 三透明电极层 106, 黑色粒子 1102遮挡发光层 114发出的光线， 此时偶数行 电泳单元呈现黑色态。 S52: 使得另一个电泳层的奇数行电泳单元为黑色态， 偶数行电泳单元 为透明态；
对另一个的电泳层的奇数行（以从左到右的方向为例） 电泳单元对应的 透明电极层施加电压， 使得微胶嚢内的黑色粒子远离对应的透明电极层， 黑 色粒子挡住发光层发出的光线， 此时奇数行电泳单元呈现黑色态； 对该电泳 层的偶数行（以从左到右的方向为例）电泳单元对应的透明电极层施加电压， 使得微胶嚢内的黑色粒子靠近对应的透明电极层， 黑色粒子避开发光层发出 的光线， 此时偶数行电泳单元呈现透明态。
参考图 1所示的显示面板， 以显示面板下侧显示为例， 对应的操作为： 对下侧的电泳层的奇数行（以从左到右的方向为例） 电泳单元对应的第一透 明电极层 102施加电压， 使得微胶嚢 1091内的黑色粒子 1101远离对应的第 一透明电极层 102, 黑色粒子 1101挡住发光层 114发出的光线， 此时奇数行 电泳单元呈现黑色态； 对下侧的电泳层的偶数行（以从左到右的方向为例） 电泳单元对应的第一透明电极层 102施加电压，使得 胶嚢 1091内的黑色粒 子 1101靠近对应的第一透明电极层 102, 黑色粒子 1101避开发光层 114发 出的光线， 此时偶数行电泳单元呈现透明态。
S53: 显示层分区域显示， 显示层的奇数行像素单元显示一个画面， 显 示层的偶数行像素单元显示另一个画面。
显示层中对应步骤 S51中电泳单元为透明态的像素单元显示一个画面， 显示层中对应步骤 S52中电泳单元为透明态的像素单元显示另一个画面。 显 示层的两个所述的画面可以显示相同的图像， 也可以分别显示不同的图像。
图 3是本发明实施例 1提供的显示面板实现双面显示的示意图。
对于图 5、 图 8所示的显示面板， 其操作方法与上述描述类似， 这里不 再赘述。
本发明实施例的电泳层的电泳单元中的微胶嚢内可以只含有黑色粒子
(通常微胶嚢含有黑色粒子和白色粒子） ， 从而通过改变黑色粒子在微胶嚢 中的位置控制电泳单元的状态， 包括透明态和黑色态， 进而实现显示面板的 双面显示， 节约了材料费用， 同时减低了工艺要求， 容易实现。
本发明实施例的电泳层结构筒单， 厚度小， 显示层采用有机电致发光二 极管，厚度小， 同时具有两个显示面； 这使得整个显示面板的厚度得以降低； 显示层和电泳层相互配合可实现显示面板的单面显示或双面显示， 甚至全透 明显示。
本发明实施例中用到的所有基板既可以是硬质基板,也可以是柔性基板， 进一步扩展了本发明的应用范围。
以上实施方式仅用于说明本发明， 而并非对本发明的限制， 有关技术领 域的普通技术人员， 在不脱离本发明的精神和范围的情况下， 还可以做出各 种变化和变型， 因此所有等同的技术方案也属于本发明的范畴， 本发明的专 利保护范围应由权利要求限定。

Claims

权利要求书
1、 一种显示面板， 包括显示层和两个电泳层， 其中，
所述显示层位于两个电泳层之间；
所述显示层具有两个显示面；
所述两个电泳层每个包括多个电泳单元， 所述电泳单元的状态包括透明 态和非透明态。
2、根据权利要求 1所述的显示面板， 其中， 所述显示层包括包含多个像 素单元的阵列， 所述像素单元与所述两个电泳层每个的电泳单元——对应。
3、根据权利要求 1或 2所述的显示面板， 其中， 所述电泳单元包括两个 相对设置的透明电极层， 所述透明电极层为平面电极层或图案化电极层。
4、根据权利要求 3所述的显示面板， 其中， 所述透明电极层与所述显示 层平行或所述透明电极层与所述显示层垂直。
5、根据权利要求 4所述的显示面板， 其中， 所述透明电极层与所述显示 层垂直时， 所述两个相对设置的透明电极层之间还设置有垂直于所述两个相 对设置的透明电极层的另一个透明电极层。
6、 根据权利要求 3-5任一所述的显示面板， 其中， 所述电泳单元包括液 体和黑色粒子， 所述黑色粒子在所述两个相对设置的透明电极层形成的电场 作用下移动， 实现电泳单元透明态和非透明态的切换。
7、 根据权利要求 1-6任一所述的显示面板， 其中， 所述电泳单元包括微 胶嚢， 所述液体和黑色粒子包含在所述微胶嚢内。
8、 根据权利要求 1-7任一所述的显示面板， 其中， 所述像素单元为有机 发光二极管。
9、根据权利要求 8所述的显示面板， 其中， 所述有机发光二极管包括形 成于村底基板之上的阳极、 有机层和阴极； 所述有机层位于所述阳极和阴极 之间， 所述有机层包括发光层。
10、 一种显示装置， 包括如权利要求 1-9任一项所述的显示面板。
11、 一种显示面板的制作方法， 包括：
在第一基板的一侧形成双面显示的显示层；
在第一基板的另一侧和第二基板之间形成第一电泳层， 所述第一电泳层 包括多个电泳单元， 所述电泳单元的状态包括透明态和非透明态； 在所述显示层之上设置第三基板；
在所述第三基板远离所述显示层的一侧和第四基板之间形成第二电泳 层， 所述第二电泳层包括多个电泳单元， 所述电泳单元的状态包括透明态和 非透明态。
12、根据权利要求 11所述的制作方法， 其中， 所述第一电泳层包括第一 透明电极层和第二透明电极层； 将所述第一透明电极层和第二透明电极层分 别置于所述第一基板和第二基板之上。
13、 根据权利要求 11或 12所述的制作方法， 其中， 所述第二电泳层包 括第三透明电极层和第四透明电极层； 将所述第三透明电极层和第四透明电 极层分别置于所述第三基板和第四基板之上。
14、根据权利要求 11所述的制作方法， 其中， 所述第一电泳层包括第一 透明电极层、 第二透明电极层和第三透明电极层； 将所述第一透明电极层置 于所述第一基板或第二基板之上； 将所述第二透明电极层和第三透明电极层 分别置于所述电泳单元的两侧， 所述第二透明电极层和第三透明电极层分别 垂直于所述第一基板和第二基板。
15、 根据权利要求 11或 14所述的制作方法， 其中， 所述第二电泳层包 括第四透明电极层、 第五透明电极层和第六透明电极层； 将所述第四透明电 极层置于所述第三基板或第四基板之上； 将所述第五透明电极层和第六透明 电极层分别置于所述电泳单元的两侧， 所述第五透明电极层和第六透明电极 层分别垂直于所述第三基板和第四基板。
16、 根据权利要求 11-15任一所述的制作方法， 其中， 在所述电泳单元 内设置微胶嚢， 所述微胶嚢包括液体和黑色带电粒子。
17、 根据权利要求 11-15任一所述的制作方法， 其中， 在所述电泳单元 注入含有黑色粒子的液体， 所述含有黑色粒子的液体置于第一基板和第二基 板之间或第三基板和第四基板之间。
18、 根据权利要求 11-17任一所述的制作方法， 其中， 所述形成双面显 示的显示层包括：
在第一基板上形成阳极；
形成用于分隔像素区域的像素界定层； 在所述像素界定层分隔中的像素区域依次形成空穴传输层、 发光层、 电 子传输层和阴极。
19、 一种显示面板的显示方法， 所述显示面板采用如权利要求 1-9任一 项所述的显示面板， 所述方法包括：
控制所述电泳层的电泳单元的状态以实现单面显示或双面显示。
20、根据权利要求 19所述的方法， 其中， 所述控制所述电泳层的电泳单 元的状态实现单面显示包括：
控制一个电泳层的全部电泳单元为透明态；
控制另一个电泳层的全部电泳单元为非透明态。
21、根据权利要求 19所述的方法， 其中， 所述控制所述电泳层的电泳单 元的状态实现双面显示包括：
控制一个电泳层的奇数行电泳单元为透明态， 偶数行电泳单元为非透明 态；
控制另一个电泳层的奇数行电泳单元为非透明态， 偶数行电泳单元为透 明态；
显示层分区域显示， 显示层的奇数行像素单元显示一个画面， 显示层的 偶数行像素单元显示另一个画面。
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