CN104698718A - Flexible electronic paper display screen and display device and manufacturing method - Google Patents
Flexible electronic paper display screen and display device and manufacturing method Download PDFInfo
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- CN104698718A CN104698718A CN201510111982.6A CN201510111982A CN104698718A CN 104698718 A CN104698718 A CN 104698718A CN 201510111982 A CN201510111982 A CN 201510111982A CN 104698718 A CN104698718 A CN 104698718A
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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
- G02F1/165—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
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- 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
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Abstract
The invention discloses a flexible electronic paper display screen with small water-oxygen transmittance, long service life and small flexible radius, a display device and a manufacturing method. The electronic paper display screen comprises a panel, a bottom plate and a display medium between the panel and the bottom plate; the panel consists of a flexible upper substrate made of the transparent insulating material and a common electrode installed on the inner surface of the upper substrate and made of the transparent conductive material; the bottom plate consists of a flexible lower substrate made of the insulating material and an electrode layer arranged on the lower substrate, and a passivation layer made of the non-metal membrane with low water-oxygen transmittance and a transfer electrode are installed between the lower substrate and the electrode layer. The electronic paper display screen is capable of solving the problem that the water-oxygen transmittance of the plastic film cannot satisfy the requirements of the flexible cataphoresis display medium layer, eliminating and reducing the effect of the water penetration to the flexible electronic paper display panel, improving the stability of the devices, prolonging the service life of the devices, and achieving the flexible electronic paper display in the large area. The radius of curvature can be reduced to 10 mm.
Description
Technical field
The invention belongs to field of electronic display, particularly relate to a kind of flexible electronic paper display screen, flexible electronic paper display device and preparation method thereof.
Background technology
In the last few years, along with the progress of science and technology, various display technique is constantly flourish, and at present in the development of flat-panel screens, mainly using gentlier, the target mainly pursued as future display part of characteristic that is thinner and deflection, and more little by little commercialization can be applicable to live in multiple device in, such as Electronic Paper (electronic paper, E-paper) and e-book etc.Electronic Paper is due to it and common paper is very close, namely have high contrast, wide viewing angle degree, low energy consumption and reading the performance such as high-comfort, become a kind of gradually and applied wider display device.
The quick growth in electric paper display market comes from a little excellent properties of one, and compare with thin-film electroluminescence (TFEL) flat-panel monitor with cathode-ray tube display, liquid crystal display, electric paper display tool has the following advantages:
1) energy-conserving and environment-protective, do not need background light source, the passive maintenance of image, just power consumption when only having picture to change, and power consumption reduces more than 90% than LCD;
2) electric paper display relies on the reflection realization display to light, and this non-self luminescence display mode more meets the visual custom of people, all high-visible under any high light, meets the reading habit of people;
3) large, the readability of good contrast, visible angle, reflectivity is higher than reflective LCD, and contrast is better than general newspaper;
4) be easily processed into light bendable device architecture, volume is little, light, thin, soft, collapsiblely puts pocket into, and portability aspect achieves qualitative leap;
5) can be recycled, displaying contents can be constantly updated as required.And printed matters a large amount of in traditional Publishing Models consumes considerable resource, also create serious industrial pollution simultaneously.Electronic Paper display technique has agreed with the development trend of low-carbon economy, electric paper display not only will bring revolutionary change to information record relevant industries, and at e-book, library automation, low consumption can be held in display, large-scale outdoor signboard and Foldable display device wide and far-reaching application prospect.
Electronic Paper display product of the prior art mostly is the glass-based product that hard material makes, and flexible deflection electronic paper display device is very rare.Different from the glass-based electronic paper display device of hard, flexible deflection electronic paper display device need adopt high molecule plastic material as substrate, and the planarization of plastic base is poorer than glass substrate, and the water oxygen permeability of plastic base is much larger than glass substrate, and water oxygen is the main cause causing device aging.At present, electrophoresis showed medium layer mainly adopts microcapsules (micro-capsule) structure and micro-cup (micro-cup) structure.These electrophoresis showed medium layers are more responsive to water oxygen, and it requires to be less than 0.1g/m2/day to water transmitance (WVTR), requires especially to be less than 0.01g/m2/day during high-end applications.The water oxygen high permeability of plastic base will speed up the aging of electrophoresis showed medium layer, affects device lifetime.
Generally speaking, the water transmitance (WVTR) of current common plastics substrate is 1 ~ 20g/m
2/ day, oxygen permeability (OTR) 1 ~ 20cm
3/ m
2/ day.The water transmitance (WVTR) of the PET film of such as 25.4 micron thickness is 10.7g/m
2/ day (90 ~ 100%RH), oxygen permeability (OTR) is 79cm
3/ m
2/ day (25 degree), high water oxygen permeability by the performance of deteriorated electrophoresis showed medium layer, thus affects the display characteristic of device, shortens device lifetime.Therefore, common plastics substrate cannot meet the requirement of deflection electrophoresis showed medium layer; And along with the continuous increase of deflection electronic paper display devices size, thickness constantly reduces, reducing of deflection radius, single layer plastics films faces severeer water oxygen permeability challenge.
In view of this, deflection electronic paper display device water oxygen must be solved and stop problem, improve device stability, extend device lifetime.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of water oxygen permeability is little, long service life and the manufacture method of the little deflection electronic-paper display screen of deflection radius and display device and this display screen.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Deflection electronic-paper display screen of the present invention, comprises panel, base plate and the display medium between panel and base plate, it is characterized in that:
The upper substrate that described panel is made by flexible deflection and for transparent insulation material and be arranged at the public electrode that upper substrate inside surface is made by electrically conducting transparent material and form;
The infrabasal plate that described base plate is made by flexible deflection and for isolation material and the electrode layer be placed on infrabasal plate are formed, between infrabasal plate and electrode layer, be provided with the passivation layer be made up of the non-metallic film that water oxygen permeability is low, described electrode layer comprises common lead electrode, show electrode and background electrode;
The transfer printing electrode that public electrode and common lead electrode are electrically connected also is provided with between described public electrode with common lead electrode.
The insulation course being provided with conductive circuit layer from the bottom to top successively and this conductive circuit layer and described electrode layer are kept apart between described passivation layer and electrode layer, described electrode layer is electrically connected with conductive circuit layer by least one transitional pore arranged on the insulating layer, and described insulation course is ridden on described passivation layer by several through holes be arranged in conductive circuit layer.
The thickness of described passivation layer is at 50nm-1000nm.
Described passivation layer is the inorganic insulating membrane of SiOx, SiNx, SiON or Al2O3 material; Or be the organic insulating film that one or more potpourris in PMMA, PS, the polymeric derivative with phenolic group group, acrylic polymer, acid imide macromolecule are made; Or be the compound stack body of described inorganic insulating membrane and organic insulating film.
Described upper substrate is made by polyethylene terephthalate; Described infrabasal plate is by polyethylene terephthalate, cyclic olefin polymer, PEN, polyimide, polycarbonate, polyethersulfone, polymethylmethacrylate or to be not more than the thin glass of 0.2mm thickness made.
The outside surface of described panel is also provided with the clear protective film layer be made up of water resistant oxygen, antireflection and anti-ultraviolet material.
Deflection electronic paper display device of the present invention, comprise panel, base plate and between panel and base plate for microcapsules and micro-cup structure composition display medium, it is characterized in that:
The upper substrate that described panel is made by flexible deflection and for transparent insulation material and be arranged at the public electrode that upper substrate inside surface is made by electrically conducting transparent material and form;
The infrabasal plate that described base plate is made by flexible deflection and for isolation material and the electrode layer be placed on infrabasal plate are formed, between infrabasal plate and electrode layer, be provided with the passivation layer be made up of the non-metallic film that water oxygen permeability is low, described electrode layer comprises common lead electrode, show electrode and background electrode;
The transfer printing electrode that public electrode and common lead electrode are electrically connected also is provided with between described public electrode with common lead electrode;
Driving chip terminal is provided with between passivation layer and public electrode, the electric signal that this driving chip produces is sent to described show electrode and background electrode by chip terminal, and the predeterminated voltage that this driving chip produces conducts to described public electrode by this chip another terminal, common lead electrode and transfer printing electrode.
The insulation course being provided with conductive circuit layer from the bottom to top successively and this conductive circuit layer and described electrode layer are kept apart between described passivation layer and electrode layer, described electrode layer is electrically connected with conductive circuit layer by least one transitional pore arranged on the insulating layer, and described insulation course rides on described passivation layer by several through holes be arranged in conductive circuit layer; The electric signal that described driving chip produces is sent to described show electrode and background electrode by chip terminal, conductive circuit layer, and the predeterminated voltage that this driving chip produces conducts to described public electrode by this chip another terminal, conductive circuit layer, common lead electrode and transfer printing electrode.
The method of making deflection electronic-paper display screen of the present invention, is characterized in that: comprise the steps:
1) polyethylene terephthalate, cyclic olefin polymer, PEN, polyimide, polycarbonate, polyethersulfone, polymethylmethacrylate or the thin glass that is not more than 0.2mm thickness is selected to make the infrabasal plate of flexible deflection;
2) passivation layer be made up of the non-metallic film that water oxygen permeability is low is made at infrabasal plate upper surface;
3) photoetching or typography is adopted to make the electrode layer comprising common lead electrode, show electrode and background electrode made by electroconductive oxide or alloy material or metal material at the upper surface of described passivation layer;
4) technique of heat lamination is adopted to use conductive silver paste to make transfer printing electrode on the common lead electrode of electrode layer;
5) adopt the upper substrate that the technique of heat lamination makes the display medium be made up of electrophoresis showed medium or electric wetting layer, the public electrode be made up of electrically conducting transparent material from the bottom to top successively and makes by flexible deflection and for transparent insulation material on described electrode layer, described transfer printing electrode is placed in the conductive path forming public electrode and common lead electrode between public electrode and common lead electrode;
6) employing hot lamination process covers the clear protective film layer that one deck is made up of water resistant oxygen, antireflection and anti-ultraviolet material on the outside surface of described upper substrate.
Described electrically conducting transparent material in the inventive method is ITO or IZO.
Compared with prior art, the invention solves the requirement that plastic sheeting water oxygen permeability cannot meet deflection electrophoresis showed medium layer, stop and reduce water permeation to the impact of deflection electronic paper display panel, improve device stability, extend device lifetime, realize the display of large area deflection Electronic Paper.Deflection display device of the present invention can adopt printing or volume to volume process manufacturing technology, processing technology is simple, easy to prepare, improves yields, significantly reduce costs, it can be widely used in the various application scenarios such as smart card, shelf label, all kinds of digital recording board, power displays.The radius-of-curvature of the deflection of deflection electronic-paper display screen of the present invention can be as small as 10mm.
Accompanying drawing explanation
Fig. 1 is the diagrammatic cross-section of the embodiment of the present invention 1.
Fig. 2 is the diagrammatic cross-section of the embodiment of the present invention 2.
Reference numeral is as follows:
Infrabasal plate 1, passivation layer 2, electrode layer 3, common lead electrode 31, show electrode 32, background electrode 33, electrode gap 34, Electronic Paper film 4, display medium 41, public electrode 42, upper substrate 43, clear protective film layer 5, transfer printing electrode 6, driving chip 7, conductive circuit layer 8, insulation course 9, contact hole 91.
Embodiment
Under the invention will be further described by reference to the accompanying drawings.
Embodiment 1
As shown in Figure 1, deflection electronic-paper display screen of the present invention is made up of the clear protective film layer 5 on panel, base plate and the display medium between panel and base plate 41 and panel outer surface.
The upper substrate 43 that described panel is made by flexible deflection and for transparent insulation material and be arranged at upper substrate 43 inside surface (with direction in Fig. 1 for reference, in under upper substrate 43, direction is, to for outward on upper substrate 43, lower with) on the public electrode 42 that made by electrically conducting transparent material form;
The infrabasal plate 1 that described base plate is made by flexible deflection and for isolation material and being placed on infrabasal plate 1 (with Fig. 1 direction for reference, to for upper on infrabasal plate 1, under under infrabasal plate 1, direction is, electrode layer 3 down together) is formed, between infrabasal plate 1 and electrode layer 3, be provided with the passivation layer 2 be made up of the non-metallic film that water oxygen permeability is low, described electrode layer 3 comprises common lead electrode 31, show electrode 32 and background electrode 33;
Described public electrode 42 be also provided with the transfer printing electrode 6 that public electrode 42 and common lead electrode 31 are electrically connected between common lead electrode 31.
Described infrabasal plate 1 is made for flexible deflection material, polyethylene terephthalate (polyethylene terephthalate can be adopted, PET), cyclic olefin polymer (polycyclic olefin, PCO), PEN (polyethylene naphthalene, PEN), polyimide (polyimide, PI), polycarbonate (polycarbonate, PC), polyethersulfone (polyether sulphone, or polymethylmethacrylate (Polymethyl methacrylate, PMMA) PES).Also thin glass (thickness is less than 0.2mm) can be adopted.
Passivation layer 2 is covered at the upper surface of described infrabasal plate 1; this passivation layer 2 upwards spreads in order to reduce or to prevent the water oxygen molecule in environment from permeating infrabasal plate 1; this structure can effectively prevent described display medium 41 to be subject to the erosion of water oxygen molecule, thus can available protecting electronic-paper display screen of the present invention.
Described passivation layer 2 comprises SiOx class film or SiNx class film or SiON class film.
Described passivation layer 2 can use inorganic insulating membrane, and wherein inorganic insulating membrane can comprise: SiOx, SiNx, SiON, Al2O3 etc.; Form passivation layer 2 by chemogenic deposit (CVD), sputtering (sputter) or coating (coating) mode, its thickness can be more than 50nm and below 1000nm.
Described passivation layer 2 also can use organic insulating film, and organic insulating film can comprise: general common polymer (PMMA, PS), the polymeric derivative with phenol (phenol) group, acrylic polymer, acid imide macromolecule, aryl oxide family macromolecule, amide-type macromolecule, fluorine family macromolecule, P-xylene family macromolecule, vinyl alcohol macromolecule and composition thereof etc.Passivation layer 2 can also be formed as the compound stack body of inorganic insulating membrane and organic insulating film.
Arrange electrode layer 3 at the upper surface of described passivation layer 2, described electrode layer 3 realizes common lead electrode 31 by patterning process, show electrode 32, background electrode 33 3 functional electrodes and each interelectrode electrode gap 34.
Described electrode layer 3 is formed by conductive material, and wherein conductive material can comprise: the electroconductive oxides such as ITO, IZO; Or Cu, Mo, Al, Ag, Mo/Al/Mo and alloy etc. thereof, realize patterning by photoetching process.
Described electrode layer 3 also can adopt the better material of ductility, can comprise: conductive silver paste, nano-silver thread (nano Ag), metal grill (metal mesh), carbon nano-tube, or Graphene etc.Electrode layer 3 also can preferential oxidation indium tin thin film.
Use photoetching process or printing technology, finishing patterns processing procedure, to increase pliability, realizes small curvature radius deflection electronic paper display panel.
On electrode layer 3, set gradually described display medium 41, public electrode 42 and upper substrate 43 (can be Electronic Paper film 4 by the combination abbreviation of display medium 41, public electrode 42 and upper substrate 43 below), Electronic Paper film 4 is arranged on electrode layer 3 by the mode of heat lamination.
Display medium 41, can comprise microcapsules, the electrophoresis showed medium of micro-glass, also can be electric wetting layer.
Upper substrate 43, its material is that polyethylene terephthalate (polyethylene terephthalate, PET) etc. has deflection, plastic material that is transparent, insulation is made.
Public electrode 42 is electrically conducting transparent materials, can comprise ITO, IZO etc.
On the common lead electrode 31 of electrode layer 3, be also provided with transfer printing electrode 6, described transfer printing electrode 6 can use conductive silver paste, and the public electrode 42 being realized Electronic Paper film 4 by the mode of heat lamination is connected with common lead electrode 31, conducting of both realizations.
Described clear protective film layer 5, is arranged at by the mode of heat lamination on the outside surface of upper substrate 43, is formed protection of the present invention.Clear protective film layer 5 is at least by having protection (such as water resistant oxygen, antireflection, uv-resistant etc.) and the material of transparent functional such as acrylic (PMMA; acrylic) or PEN (PEN) make; the effect of described clear protective film layer 5 is that protection Electronic Paper film 4 is not easily damaged in bending or folding process, and described clear protective film layer 5 can also have the characteristics such as wear-resistant, anticorrosive, anti-fingerprint, touch-control.
Deflection electronic paper display device of the present invention is that the electrode layer 3 in above-mentioned deflection electronic-paper display screen arranges driving chip 7 terminal, this driving chip 7 terminal is electrically connected with the driving chip 7 be arranged in peripheral components, described electrode layer 3 is connected with driving chip 7 terminal, realizes the connection with driving chip 7.Electrode layer 3 connects with the electrode terminal of peripheral components (not shown, as control circuit, power circuit etc.), thus can realize the connection of the present invention and external system.
During the work of this display device, the signal of driving chip 7 is sent to show electrode 32 and background electrode 33 by driving chip 7 terminal, electrode layer 3, realizes corresponding display pattern; The predeterminated voltage simultaneously produced by driving chip 7 is sent to the public electrode 42 of Electronic Paper film 4 by the common lead electrode 31 in driving chip 7 terminal, electrode layer 3 and transfer printing electrode 6, like this, between the upper and lower surface of the display medium 41 of display pattern, form an electric field, thus the arrangement changing the charged capsule in display medium 41 realizes display.
Embodiment 2
As shown in Figure 2, the present embodiment difference from Example 1 is:
The insulation course 9 being also provided with conductive circuit layer 8 from the bottom to top successively and this conductive circuit layer 8 is kept apart with described electrode layer 3 between described passivation layer 2 and electrode layer 3.
Described electrode layer 3 (is placed in driving chip 7 in conductive circuit layer 8 by the connection of this conductive circuit layer 8 with electrode layer 3 by being arranged at least one transitional pore on insulation course 9 and conductive circuit layer 8, thus realize the driving of driving chip 7 to display) electrical connection, described insulation course 9 rides on described passivation layer 2 by several through holes be arranged in conductive circuit layer 8; The electric signal that described driving chip 7 produces is sent to described show electrode 32 and background electrode 33 by driving chip 7 terminal, conductive circuit layer 8, and the predeterminated voltage that this driving chip 7 produces conducts to described public electrode 42 by this chip another terminal, conductive circuit layer 8, common lead electrode 31 and transfer printing electrode 6.
Described conductive circuit layer 8, can be formed by electroconductive oxide or conducting metal, wherein electroconductive oxide can comprise: ITO, IZO etc.; Metal can comprise: Cu, Mo, Al, Ag, Mo/Al/Mo and alloy thereof, forms conductive circuit layer 8 by photoetching process.This conductive circuit layer 8 also can adopt the better material of ductility, can comprise: conductive silver paste, nano-silver thread (nano Ag), metal grill (metal mesh), carbon nano-tube, or Graphene etc., use photoetching process or printing technology, finishing patterns processing procedure, to increase pliability, realizes small curvature radius deflection electronic paper display panel.
Insulation course 9 is formed by organic insulating film, organic insulating film can comprise: general common polymer (PMMA, PS), the polymeric derivative with phenol (phenol) group, acrylic polymer, acid imide macromolecule and composition thereof etc., adopt photoetching process or printing technology, the transitional pore described in realization.
The thickness of described insulation course 9 is more than 1 μm and less than 10 μm.
The present embodiment has the following advantages compared with embodiment 1:
1) display effect is good, can realize accurate display, avoids the impact of conductive circuit layer 8 on displaying contents.
2) complex display content can be realized.Realize the word of closing structure or the complex background of letter.
3) display pattern of whole Electronic Paper can be meticulousr finer and smoother.Product can be used for high-end display, such as credit card etc.
4) avoid electrophoresis showed medium layer to the corrosion of conductive circuit layer 8, reduce failure risk.
In the present embodiment situation, deflection electronic paper display device of the present invention is that the conductive circuit layer 8 in above-mentioned deflection electronic-paper display screen arranges driving chip 7 terminal, this driving chip 7 terminal is electrically connected with the driving chip 7 be arranged in peripheral components, described conductive circuit layer 8 is connected with driving chip 7 terminal, realizes the connection with driving chip 7.Conductive circuit layer 8 connects with the electrode terminal of peripheral components (not shown, as control circuit, power circuit etc.), thus can realize the connection of the present invention and external system.
During the work of this display device, the signal of driving chip 7 is sent to show electrode 32 and background electrode 33 by driving chip 7 terminal, conductive circuit layer 8, electrode layer 3, realizes corresponding display pattern; The predeterminated voltage simultaneously produced by driving chip 7 is sent to the public electrode 42 of Electronic Paper film 4 by the common lead electrode 31 in driving chip 7 terminal, conductive circuit layer 8, electrode layer 3 and transfer printing electrode 6, like this, between the upper and lower surface of the display medium 41 of display pattern, form an electric field, thus the arrangement changing the charged capsule in display medium 41 realizes display.
Claims (10)
1. a deflection electronic-paper display screen, comprises panel, base plate and the display medium between panel and base plate (41), it is characterized in that:
The upper substrate (43) that described panel is made by flexible deflection and for transparent insulation material and be arranged at the public electrode (42) that upper substrate (43) inside surface is made by electrically conducting transparent material and form;
The infrabasal plate (1) that described base plate is made by flexible deflection and for isolation material and the electrode layer (3) be placed on infrabasal plate (1) are formed, between infrabasal plate (1) and electrode layer (3), be provided with the passivation layer (2) be made up of the non-metallic film that water oxygen permeability is low, described electrode layer (3) comprises common lead electrode (31), show electrode (32) and background electrode (33);
The transfer printing electrode (6) that public electrode (42) and common lead electrode (31) are electrically connected also is provided with between described public electrode (42) with common lead electrode (31).
2. deflection electronic-paper display screen according to claim 1, it is characterized in that: the insulation course (9) being provided with conductive circuit layer (8) from the bottom to top successively and this conductive circuit layer (8) and described electrode layer (3) are kept apart between described passivation layer (2) and electrode layer (3), described electrode layer (3) is electrically connected with conductive circuit layer (8) by least one transitional pore be arranged on insulation course (9), described insulation course (9) is ridden on described passivation layer (2) by several through holes be arranged in conductive circuit layer (8).
3. deflection electronic-paper display screen according to claim 1 and 2, is characterized in that: the thickness of described passivation layer (2) is at 50nm-1000nm.
4. deflection electronic-paper display screen according to claim 3, is characterized in that: the inorganic insulating membrane that described passivation layer (2) is SiOx, SiNx, SiON or Al2O3 material; Or be the organic insulating film that one or more potpourris in PMMA, PS, the polymeric derivative with phenolic group group, acrylic polymer, acid imide macromolecule are made; Or be the compound stack body of described inorganic insulating membrane and organic insulating film.
5. deflection electronic-paper display screen according to claim 4, is characterized in that: described upper substrate (43) is made by polyethylene terephthalate; Described infrabasal plate (1) is by polyethylene terephthalate, cyclic olefin polymer, PEN, polyimide, polycarbonate, polyethersulfone, polymethylmethacrylate or to be not more than the thin glass of 0.2mm thickness made.
6. deflection electronic-paper display screen according to claim 4, is characterized in that: on the outside surface of described panel, be also provided with the clear protective film layer (5) be made up of water resistant oxygen, antireflection and anti-ultraviolet material.
7. a deflection electronic paper display device, comprise panel, base plate and between panel and base plate for microcapsules and micro-cup structure composition display medium (41), it is characterized in that:
The upper substrate (43) that described panel is made by flexible deflection and for transparent insulation material and be arranged at the public electrode (42) that upper substrate (43) inside surface is made by electrically conducting transparent material and form;
The infrabasal plate (1) that described base plate is made by flexible deflection and for isolation material and the electrode layer (3) be placed on infrabasal plate (1) are formed, between infrabasal plate (1) and electrode layer (3), be provided with the passivation layer (2) be made up of the non-metallic film that water oxygen permeability is low, described electrode layer (3) comprises common lead electrode (31), show electrode (32) and background electrode (33);
The transfer printing electrode (6) that public electrode (42) and common lead electrode (31) are electrically connected also is provided with between described public electrode (42) with common lead electrode (31);
Driving chip (7) terminal is provided with between passivation layer (2) and public electrode (42), the electric signal that this driving chip (7) produces is sent to described show electrode (32) and background electrode (33) by chip terminal, and the predeterminated voltage that this driving chip (7) produces conducts to described public electrode (42) by this chip another terminal, common lead electrode (31) and transfer printing electrode (6).
8. deflection electronic paper display device according to claim 7, it is characterized in that: the insulation course (9) being provided with conductive circuit layer (8) from the bottom to top successively and this conductive circuit layer (8) and described electrode layer (3) are kept apart between described passivation layer (2) and electrode layer (3), described electrode layer (3) is electrically connected with conductive circuit layer (8) by least one transitional pore be arranged on insulation course (9), described insulation course (9) rides on described passivation layer (2) by several through holes be arranged in conductive circuit layer (8), the electric signal that described driving chip (7) produces is sent to described show electrode (32) and background electrode (33) by chip terminal, conductive circuit layer (8), and the predeterminated voltage that this driving chip (7) produces conducts to described public electrode (42) by this chip another terminal, conductive circuit layer (8), common lead electrode (31) and transfer printing electrode (6).
9. make a method for deflection electronic-paper display screen, it is characterized in that: comprise the steps:
1) polyethylene terephthalate, cyclic olefin polymer, PEN, polyimide, polycarbonate, polyethersulfone, polymethylmethacrylate or the thin glass that is not more than 0.2mm thickness is selected to make the infrabasal plate (1) of flexible deflection;
2) passivation layer (2) be made up of the non-metallic film that water oxygen permeability is low is made at infrabasal plate (1) upper surface;
3) photoetching or typography is adopted to make the electrode layer (3) comprising common lead electrode (31), show electrode (32) and background electrode (33) made by electroconductive oxide or alloy material or metal material at the upper surface of described passivation layer (2);
4) technique of heat lamination is adopted to use conductive silver paste at the common lead electrode (31) upper making transfer printing electrode (6) of electrode layer (3);
5) adopt the upper substrate (43) that the technique of heat lamination makes the display medium (41) be made up of electrophoresis showed medium or electric wetting layer, the public electrode (42) be made up of electrically conducting transparent material from the bottom to top successively and makes by flexible deflection and for transparent insulation material on described electrode layer (3), described transfer printing electrode (6) is placed in the conductive path forming public electrode (42) and common lead electrode (31) between public electrode (42) and common lead electrode (31);
6) employing hot lamination process covers the clear protective film layer (5) that one deck is made up of water resistant oxygen, antireflection and anti-ultraviolet material on the outside surface of described upper substrate (43).
10. method according to claim 9, is characterized in that: described electrically conducting transparent material is ITO or IZO.
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| CN201510111982.6A CN104698718A (en) | 2015-03-13 | 2015-03-13 | Flexible electronic paper display screen and display device and manufacturing method |
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| CN116068773A (en) * | 2023-03-06 | 2023-05-05 | 惠科股份有限公司 | Head-mounted display device and preparation method thereof |
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Application publication date: 20150610 |