CN102385213B - A kind of electrophoretic display apparatus and preparation method thereof - Google Patents
A kind of electrophoretic display apparatus and preparation method thereof Download PDFInfo
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- CN102385213B CN102385213B CN201010286402.4A CN201010286402A CN102385213B CN 102385213 B CN102385213 B CN 102385213B CN 201010286402 A CN201010286402 A CN 201010286402A CN 102385213 B CN102385213 B CN 102385213B
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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
-
- 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
Abstract
The present invention relates to a kind of electrophoretic display apparatus and preparation method thereof, the electrophoretic display layer of this device comprises multiple basic display unit, it is characterized in that, each basic display unit comprises one group of micro-pond subunit, micro-pond that each micro-pond subunit is interconnected by the perfusion that can realize electrophoresis disclosing solution is after encapsulation formed, and described micro-pond comprises electrophoresis disclosing solution.The preparation method of this device is first by common electrode panel transparent to the electrophoretic display layer and with the micro-pond be partly or entirely interconnected and be with the control electrode panel of control circuit to encapsulate, form a complete micro-pool array sylphon, and then electrophoresis disclosing solution is filled into the method in micro-pond of electrophoretic display layer.Relatively simple technically, easily implement, solve the display liquid mixed questions in micro-glass of technology up hill and dale, in addition, the display of multiple color and full color can be realized by the combination of specific electrophoresis disclosing solution.
Description
Technical field
The present invention relates to a kind of electrophoretic display apparatus and preparation method thereof.
Background technology
Compared with traditional flat panel display, it is low, flexible that electrophoresis showed possesses energy consumption, and high, the high visual bistability of contrast, visuality are good, application is simple.Combine the advantage of traditional paper and electronical display, electrophoresis showed is the technology of most potentiality in current electronic paper application.Electrophoretic display technology proposes about the seventies in last century greatly, and progressively earns widespread respect.
The Eink company of the U.S. has delivered a series of patent, comprises following patent as US6120588, US6652075, US6822782, US6982178, US7079305 and US7230750 etc.Its major technique can show the electrophoresis disclosing solution of two kinds or more of color by microcapsule coated under extra electric field, and be coated with the uniform microcapsules thin layer of one deck at surfaces of conductive substrates, then prepared coating and control circuit being combined obtains electrophoretic display apparatus.This technology solves the problem of the stability of electrophoresis disclosing solution preferably by the method for microcapsule coated, also easily obtain a uniform electrophoretic display materials thin layer, the display of two kinds or several colors can be realized well and obtain the intermediateness of these colors.But show full color by this technology and have very large difficulty, the uniform microcapsule ground being mainly how can to show different basic colors by multiple, to be distributed on conductive base in an orderly manner, and form the less pixel cell of size simultaneously.
The Sipix company of the U.S. proposes a kind of micro-glass of technology to realize electrophoresis showed, as described in patent US6672921, US6751008 and US6753067.The technical development of the Sipix company method of a kind of continuous seepage micro-glass, pours into electrophoresis disclosing solution, and then encapsulates in micro-cup.This technology can realize the continuous seepage of micro-glass well, also solves the stability problem of electrophoresis disclosing solution preferably.In order to realize the display of full color, need different electrophoresis disclosing solutions to be poured in adjacent micro-cup, thus the color display unit that formation one is basic.But after perfusion electrophoresis disclosing solution, in the process of encapsulation, how to avoid different display mixing of liquid to have larger difficulty.
Summary of the invention
Technical matters to be solved by this invention is based on existing electrophoretic display technology, and in conjunction with the mature technology of existing electronics industry and other industry, a kind of design proposal of new electrophoretic display apparatus is provided, on single display screen, directly can realizes the pictograph display of multiple color or full color.
As previously mentioned, existing electrophoretic display panel is mainly based on microcapsules or micro-glass of technology, and microcapsules technology solves the stability problem of electrophoresis disclosing solution, but it is difficult to realize full-color EL display.Micro-glass of technology had both solved the stability problem of electrophoresis disclosing solution, also can by realize the display of full color at adjacent micro-glass of perfusion different display liquid, but it can not avoid showing in encapsulation process the problem that liquid mixes.
On the basis of existing technology, present inventors have proposed a kind of design, namely first by common electrode panel transparent to the electrophoretic display layer and with the micro-pond be partly or entirely interconnected and be with the control electrode panel of control circuit to encapsulate, form a complete micro-pool array sylphon, and then method electrophoresis disclosing solution is filled in micro-pond of electrophoretic display layer, so just efficiently solve the problem that display liquid mixes.
Based on above design, the invention provides a kind of electrophoretic display apparatus, concrete technical scheme is as follows:
A kind of electrophoretic display apparatus, its electrophoretic display layer comprises multiple basic display unit, it is characterized in that, each basic display unit comprises one group of micro-pond subunit, micro-pond that each micro-pond subunit is interconnected by the perfusion that can realize electrophoresis disclosing solution is after encapsulation formed, and described micro-pond comprises electrophoresis disclosing solution.
Preferably, described micro-pond subunit communicates with each other on horizontal or longitudinal direction or both direction.Such layout saves material, and makes reperfusion mode efficient, laborsaving.
Described Wei Chi one end be interconnected is connected with device for casting, and the other end is connected with conduit.If same electrophoresis disclosing solution is all poured in all micro-ponds, then all micro-ponds can be arranged to communicate with each other, so only need arrange a device for casting in the one end in all micro-ponds, the other end arranges a conduit.
The area of plane in described single micro-pond is generally 1 μm
2-4 × 10
8μm
2, be preferably 25 μm
2-25 × 10
4μm
2, be more preferably 1 × 10
2μm
2-4 × 10
4μm
2, most preferably be 4 × 10
2μm
2-1 × 10
4μm
2.
The height in described single micro-pond is generally 1-1000 micron, preferred 5-200 micron, more preferably 10-100 micron, most preferably 10-30 micron.
The width of the interface channel between the micro-pond in each micro-pond subunit described is generally 1-100 micron, preferred 2-50 micron, more preferably 2-20 micron.
The shape in described single micro-pond is preferably rhombus; The pool wall in described micro-pond is made up of non-conductive or that conductance is extremely low material, as glass, plastics, metal oxide or other suitable materials.
Described transparent common electrode panel comprises transparent substrate layer and coating transparency conducting layer over the transparent substrate, and wherein electrically conducting transparent layer material is optional from indium tin oxide (ITO), zinc paste (ZnO), tin ash (SnO
2) or indium oxide (In
2o
3); And transparent substrate material can be selected from PET, nylon, polystyrene, tygon, polymethylmethacrylate or Polyvinylchloride.
Described control electrode panel comprises substrate layer and conductive layer, and wherein conductive can be selected from tin-oxide (ITO), zinc paste (ZnO), tin ash (SnO
2) or indium oxide (In
2o
3), carbon (C), gold (Au), silver (Ag), copper (Cu), aluminium (Al), thin film transistor (TFT) (ThinFilmTransistor), OTFT (OrganicThinFilmTransistor) etc.; And substrate material is selected from PET, nylon, polystyrene, tygon, polymethylmethacrylate or Polyvinylchloride, epoxy resin, FR-4, glass etc.The TFT of control electrode panel preferred glass substrate and the OTFT of flexible base, board.
Described control electrode panel is made up of the sub-cell electrode organized more, as a kind of concrete embodiment, each sub-cell electrode can carry out Control of Voltage to subunit region, a micro-pond, or carries out Control of Voltage to single micro-pond, determines according to the actual conditions shown.The sub-cell electrode of one group forms a cell electrode, and a cell electrode drives a display unit, and as one preferred embodiment, each sub-cell electrode independently can both carry out the control of voltage, comprises size and the driving time of voltage.
Electrophoresis disclosing solution in described micro-pond can be a kind of single-particle system, and namely only have a kind of charged solid pigment particle to be dispersed in the solvent containing organic dyestuff, solid pigment and dyestuff have different colors.
Electrophoresis disclosing solution in described micro-pond also can be a kind of two particle or multi-particles System, namely has the solid pigment particle dispersion of two kinds of different colours at least in the solution.
In a basic display unit, adjacent micro-pond subunit can pour into same electrophoresis disclosing solution, also can pour into different types of electrophoresis disclosing solution.
One group of micro-pond subunit of described basic display unit, can be four micro-pond subunits, namely can pour into four kinds of different types of electrophoresis disclosing solutions.
The concrete scheme being perfused with four kinds of different electrophoresis disclosing solutions in described display unit can be: three kinds is the electrophoresis disclosing solution be made up of the basic colors colorant that a kind of colorant of public color is different with a kind of and public color dyes agent color, another kind is the electrophoresis disclosing solution simultaneously containing adularescent and black colorant, and the colorant of wherein said public color is white color agents or black colorant.The color combination of the colorant in four kinds of different electrophoresis disclosing solutions can be respectively black/white, red/white color, blue/white and green/white; Black/white, cyan/white, magenta/white and yellow/white can also be respectively.
The driving voltage of described each sub-cell electrode can independent regulation, the size of regulation voltage or the driving time of voltage can be passed through, or the simultaneously size of regulation voltage and driving time, change the color gray scale of corresponding micro-pool area electrophoresis disclosing solution with this, reach the Show Color gray scale of expection.The color gray scale in the micro-pond controlled by each sub-cell electrode under same basic display unit, is mixed the color effects of basic display unit, finally constitutes whole display frame by each basic display unit.
The invention still further relates to the preparation method of electrophoretic display apparatus, its preparation comprises the steps:
(1) nesa coating and transparent substrate layer form transparent common electrode panel, at the conducting film coated on one side layer of material film of transparent common electrode panel;
(2) material membrane described in the step (1) on transparency carrier is prepared into the micro-pool array having at least each the micro-pond in the subunit of same micro-pond to communicate with each other;
(3) substrate layer and conductive layer form control circuit panel, multiple sub-cell control electrode is prepared at the conductive layer of control electrode panel, utilize sticky stick to be packaged together by the micro-pool array layer on the transparency carrier described in this control electrode panel and step (2), form micro-pool array box;
(4) in step (3) gained micro-pool array box, inject electrophoresis disclosing solution, micro-pool array box is sealed.
Electrophoretic display apparatus of the present invention is relatively simple technically, easily implements, solves the display liquid mixed questions in micro-glass of technology up hill and dale, in addition, can be realized the display of multiple color and full color by the combination specifically showing liquid.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of electrophoretic display apparatus;
Fig. 2 is the whole structure schematic diagram in multiple micro-pond in a kind of electrophoretic display apparatus of embodiment;
Fig. 3 is the schematic diagram in a kind of electrophoretic display apparatus of embodiment after part micro-pond amplification;
Fig. 4 is a kind of schematic diagram of basic display unit of electrophoretic display apparatus of embodiment;
Fig. 5 is the schematic diagram of each production phase of display device, wherein:
Fig. 5 a is the transparent substrate layer being coated with non-conductive or that conductance is extremely low material;
Fig. 5 b is the male mould schematic diagram of one embodiment of the present invention;
Fig. 5 c is the mask schematic diagram of one embodiment of the present invention;
Fig. 5 d is the schematic diagram of the micro-pool array prepared of one embodiment of the present invention;
Fig. 5 e is the schematic diagram of the control electrode panel of one embodiment of the present invention;
Fig. 5 f is the perfusion operation chart of one embodiment of the present invention.
Embodiment
definition
In context in the present invention, term " basic display unit ", the whole display plane Region dividing referring to display device is various zonule, and each zonule demonstrates one of them small pixel of display frame, and above-described zonule is exactly basic display unit.
Term " micro-pond subunit ", several the micro-ponds be connected together constitute micro-pond subunit, and the micro-pond quantity comprised under micro-pond subunit is determined according to the applicable cases of reality.
Term " sub-cell electrode ", refers to that a basic display unit is further divided into several viewing areas, one on the control panel that each viewing area is corresponding little control electrode, and this little control electrode is just sub-cell electrode.
A kind of embodiment of electrophoretic display apparatus of the present invention as shown in Figure 1, topmost one deck is transparent base 110, this material can be glass, other inorganic transparent materials or transparent plastic, includes but not limited to polyester (as PET: ethylene glycol terephthalate), nylon, polystyrene, tygon, polymethylmethacrylate, Polyvinylchloride and other transparent macromolecular materials.The panel second layer is the transparent material 120 of one deck conduction be coated on transparent base 110, and this material comprises and is not limited to tin indium oxide (ITO), zinc paste (ZnO), tin ash (SnO
2), indium oxide (In
2o
3) and other conductive, transparent inorganic material and conductive, transparent macromolecular material.110 and 120 constitute common electrode panel, and the selection of 110 and 120 materials should decide according to the application of electrophoretic display apparatus.In the stationary installation of outdoor, preferably can be coated with the glass board material of ITO, make full use of the feature that light transmission is good, environmental stability is high of glass material.Needing, under bending or folding occasion, to be preferably coated with the plastics of ITO, to be more preferably coated with the polyester material of ITO, be more preferably coated with the PET of ITO further.
130 is electrophoretic display layer, and it is in addition simultaneously for having the control electrode panel 150 of conductive material 140.Conductive material 140 can be that metal material is if gold, silver, copper, aluminium etc., conductive oxide material are as ITO, ZnO, SnO
2, In
2o
3deng and thin film transistor (TFT) TFT (ThinFilmTransistor), OTFT OTFT (OrganicThinFilmTransistor) etc.; The material of panel 150 can for various sheet materials, sheet material and the membraneous material used in industry and electron trade, such as various plastics, stupalith and compound substance.Conductive material 140 can make structure or the device of needs on panel 150 by existing various method, be such as coated with, electroplate, vacuum sputtering, vacuum coating, other techniques such as etching.Control electrode panel is the TFT of glass substrate and the OTFT of flexible base, board preferably.
Electrophoretic display layer 130 is packaged with between conductive material layer 120 and 140, electrophoretic display layer comprises organizes basic display unit more, each basic display unit comprises one group of micro-pond subunit, each micro-pond subunit is made up of the micro-pond communicated with each other, be perfused with the electrophoresis disclosing solution of identical or different color in different subunit, micro-pond is surrounded by pool wall 131.The material of pool wall 131 should be completely non-conductive or that conductance is extremely low material, as glass, plastics, metal oxide or other suitable materials.The shape in single micro-pond can have multiple choices, includes, but are not limited to square, rectangle, rhombus, triangle, hexagon, octagon, circle, ellipse, spherical, elliposoidal.Micro-pond should select suitable shape that the area shared by pool wall is minimized in whole display screen, increases the effective display area of display screen as far as possible.
Fig. 2 is the general effect schematic diagram of a kind of micro-pond scheme, black lines in figure represents the pool wall in micro-pond, and each diamond-shaped area represents a micro-pond, and micro-pond is designed to rhombus by this scheme, make pool wall area occupied less, effectively increase the effective display area of display screen.Fig. 2 just illustrates micro-pond scheme of certain area simultaneously, and the size of micro-pool area depends on actual application, should be suitable with the display area of actual electrophoretic display apparatus.
Fig. 3 is the enlarged diagram in a micro-pond of fritter electrophoresis showed, i.e. position shown in dotted line frame in Fig. 2.Similar with Fig. 2, the micro-pond shape in Fig. 3 is rhombus, and as previously mentioned, the shape in micro-pond can be any one shape.Conveniently explain the design proposal in micro-pond, Fig. 3 has only included the extremely limited several micro-pond of number.Micro-pool count of actual electrophoretic display panel may much larger than quantity illustrated in Figure 3, and concrete quantity depends on the size of actual electrophoretic display panel.As shown in Figure 3, a narrow passage 321 may be had between adjacent two micro-ponds (such as micro-pond 311 and micro-pond 312) be connected to each other micro-pond is communicated with.The micro-pond interconnected forms a subunit, as the micro-pond 311,312,313 and 314 in Fig. 3 just constitutes micro-pond subunit.Micro-pond subunit of adjacent display cell can be interconnected in the vertical, and micro-pond of the micro-pond subunit be such as made up of micro-pond 311,312,313 and 314 and the next display unit of adjacent longitudinal direction is linked together by a narrow passage 321.Like this, the same longitudinal micro-pond in display screen is all connected with each other by passage 321, subsequently by perfusion step, and perfusion same electrophoresis disclosing solution.But different longitudinal micro-pond may belong to different display units, is driven separately in the process driven by control circuit.Adjacent micro-pond likely shows different display states when display, is also likely driven into identical color, and this depends on the needs with display completely.
After micro-pool array encapsulation, there is a longer conduit 322 each one end arranging micro-pond for release air and unnecessary electrophoresis disclosing solution when perfusion electrophoresis disclosing solution, is connected with the device for casting 323 for pouring into electrophoresis disclosing solution at the other end.Just list micro-pond of a display unit in Fig. 3, the number in the micro-pond in fact between display screen inner catheter 322 and device for casting 323 can far away more than micro-pond that Fig. 3 lists.When manufacture display screen, device for casting should be designed at the same edge of this display screen as far as possible, be conducive to pouring into electrophoresis disclosing solution.By prior art as the equipment such as kapillary, minute sized syringe needle, LCDs grouting equipment are injected into Wei Chili by needing the electrophoresis disclosing solution of perfusion by device for casting 323; The all micro-pond under the acting in conjunction of the capillary force produced because of surface tension in micro-pond at impressed pressure and liquid, electrophoresis disclosing solution being full of to be interconnected.In micro-pond, original air and unnecessary electrophoresis disclosing solution are discharged by conduit 322 simultaneously, also can accelerate this filling process by the way of additional vacuum.After perfusion completes, by modes such as fluid sealant or hot sealing modes, conduit 322 and device for casting 323 are sealed, prevent entering of the loss of electrophoresis disclosing solution and air.
Should pour into electrophoresis disclosing solution of the same race in all micro-pond of a subunit inside, adjacent subunit can pour into the electrophoresis disclosing solution of different colours, also can pour into the electrophoresis disclosing solution of same color.Micro-pond subunit adjacent is in figure 3 perfused with the electrophoresis disclosing solution of four kinds of different colours, this example just enumerated, and the color category of the electrophoresis disclosing solution of actual electrophoretic display panel is generally four kinds, also one can be changed into as required, two kinds, three kinds, or even more.The kind of the color of concrete electrophoresis disclosing solution and the combination of color should decide according to the needs of practical application.
When the plane figure in the micro-pond of reality, the size in single micro-pond (such as micro-pond 311 or micro-pond 312) (size described here refers to the plane sizes in micro-pond, instead of the height of micro-pond between panel 120 and 140) may be determined by many factors.The size in single micro-pond should not be too large.Too large micro-pond can limit the resolution of electrophoretic display panel on the one hand, thus affects final display effect; Large-sized micro-pond can affect the stability of solid pigment particle in electrophoresis disclosing solution on the other hand, and then affects long-term display effect and the life-span of display screen.This is the electrophoresis disclosing solution owing to being filled with relatively large volume in large-sized micro-pond, and the solid pigment particle quantity in single micro-pond can be caused more.Even if the method that have employed multiple physics and chemistry improves the dispersion stabilization of solid pigment particle in electrophoresis disclosing solution, solid particle still can the slow sedimentation thus affect display effect because being affected by gravity.If be deposited on solid particle Limited Number together, so they than being easier to re-move and being distributed in electrophoresis disclosing solution, can not have too much influence to display effect under the driving of extra electric field.If but the solid particle number be deposited on together is too many, even if under the effect of extra electric field, is also difficult to make whole solid particles be re-dispersed in liquid phase, thus cause the granules of pigments quantity of actual displayed to affect final display effect not.But on the other hand, research shows, adopt too small micro-pool size can't significantly improve solid particle stability in the liquid phase, and manufacturing cost and the cycle of display pannel can be increased considerably.Show after deliberation, the area of plane in single micro-pond is generally 1 μm
2-4 × 10
8μm
2, be preferably 25 μm
2-25 × 10
4μm
2, be more preferably 1 × 10
2μm
2-4 × 10
4μm
2, most preferably be 4 × 10
2μm
2-1 × 10
4μm
2.
Similar with the size in micro-pond, the height (height in micro-pond corresponds to the distance between panel 120 and 140 here) in micro-pond is also by the impact of many factors.If the height in micro-pond is too high, the panel that the solid pigment particle in electrophoresis disclosing solution moves to opposite side from a side panel under the driving of extra electric field needs the time longer, thus affects the response speed of the color change of electrophoretic display panel.But too small micro-pond height can make the granules of pigments number deficiency in unit area, can not cover another color in electrophoresis disclosing solution completely, causes the color of display screen pure not and vivid.Show after deliberation, the height in single micro-pond should in the scope of 1-1000 micron, preferred 5-200 micron, more preferably 10-100 micron, most preferably 10-30 micron.
When design electrophoretic display apparatus, the width of the passage 321 between suitable adjacent micro-pond also should be selected.In order to make electrophoresis disclosing solution can smoothly by passage 321 when being perfused in display screen, enter micro-ponds all in subunit, can not cause blocking, passage 321 should have enough width.But the width of passage 321 also should not be too large.If passage is wide; the electrophoresis disclosing solution in adjacent micro-pond and solid pigment particle can be caused to circulate mutually; therefore certain granules of pigments concentration slightly in pond likely can be caused higher; and solid pigment particle number in other micro-pond is on the low side; make the electrophoresis disclosing solution in the micro-pond in same subunit uneven; likely cause the color of electrophoretic display panel uneven, affect final display effect.Show after deliberation, the width of passage 321 should in the scope of 1-100 micron, preferred 2-50 micron, more preferably 2-20 micron.
The electrophoresis disclosing solution poured in micro-pond by prior art normally used, can be content disclosed in CN101082752B and CN101738814A at application number with reference to the present inventor.Electrophoresis disclosing solution can comprise Multiple components, but at least comprises a kind of nonpolar or low polar solvent and a kind of surface solid pigment particle with some electric charges.Granules of pigments charged under the impact of applying direct current electric field can in a solvent towards some specific direction motions.In order to control granules of pigments stability in a solvent and electrophoretic characteristic, other submembers are also comprised in electrophoresis disclosing solution, as organic dyestuff such as blue dyes BlueAHF (UnitedColor company of the U.S.), as surfactants such as polyether-modified trisiloxanes, Span80 (Aldrich company of the U.S.), as particle dispersion agent such as BYK164 (German Bi Ke chemical company), as the particle chargings such as OLOA11000 control reagent, as the viscosity such as polymethylmethacrylate, polyisobutylene regulates reagent or other compositions.
The solvent of electrophoresis disclosing solution can be organic solvent or their potpourri of various nonpolar or low polarity, comprise various arene but be not limited to toluene, benzene, dimethylbenzene, the hydrocarbon of various straight chain and side chain but be not limited to nonane, certain herbaceous plants with big flowers alkane, Isopar range of solvents, Norpar solvent or other alkane solvents, various halogenated hydrocarbons but be not limited to chloroform, phenixin, various cyclic hydrocarbon but be not limited to cyclohexane, and other solvents.Solvent should choose higher boiling, low volatility, low viscosity, hypotoxic organic liquid, the hydrocarbon of preferred various straight chain and side chain, the more preferably hydrocarbon of Isopar and Norpar series.
Solid pigment particle in electrophoresis disclosing solution can be divided into inorganic pigment particles and organic pigment particles, and inorganic pigment includes, but are not limited to silicon dioxide, titania, chromium oxide, iron oxide, zinc oxide, cupric oxide, massicot, carbon black, silicate, titan yellow, chrome yellow, chrome green, manganese violet, barba hispanica, cobalt blue, zinc white, cadmium yellow, cadmium red, barium sulphate, molybdate orange, ultramarine, celeste blue, emerald green, emerald green etc.; Organic pigment includes but not limited to organic yellow uitramarine (pigment yellow 17 4, benzidine yellow, fast yellow FGL, the Chinese husky yellow R), organic orange pigment (benzidine orange, pigment orange 5), organic blue pigment (ultramarine blue, anthraquinone blue), organic red pigment (perylene red, forever solid purplish red FRR, everbright fast maroon) etc.
Cause the instability of display liquid in order to prevent from flocculating owing to attracting each other between particle, its stability in a solvent can be improved by the modifying surface of method to granules of pigments of physics or chemistry.The method of physics includes but not limited to add macromolecule stabilizer or surfactant in display liquid, as spreading agent NNO, sodium alkyl benzene sulfonate, Solsperse26000 (ICI company of Britain), make it be adsorbed in particle surface, thus make to produce repulsion between particle to improve particle dispersion stabilization in the solution.The method of chemistry includes but not limited to surface macromolecular chain being connected to granules of pigments in the mode of covalent bond, improve its dispersion stabilization in the solution, as by polystyrene, polymethylmethacrylate or other macromolecular graftedly improve granules of pigments stability in the solution at pigment particle surface.
Electrophoresis disclosing solution includes but not limited to single-particle system and double-particle system.In single-particle system, only have a kind of charged solid pigment particle to be dispersed in the solvent containing organic dyestuff, solid pigment and dyestuff have different colors.When being energized, solid pigment particle can move to the side of display, and therefore display screen shows as the color of solid pigment; Granules of pigments also can move to the back side of display screen, and display screen then presents the color of organic dyestuff.In a solvent, when being energized, display screen presents the color of wherein a kind of pigment particles to the solid pigment particle dispersion having two kinds of different colours in double-particle system; Also display screen can be allowed to present the color of another kind of pigment particles when changing electric field.
In the electrophoretic display apparatus that this patent is invented, same electrophoresis disclosing solution can be poured in all micro-ponds, in this case, the panel color that can only realize the colorant (comprising pigment and dyestuff) in electrophoresis disclosing solution and the display of derivative color that produced by the blend of colors of these colorants.Such as, micro-basin irrigation in panel is marked with a kind of electrophoresis disclosing solution containing adularescent and black colorant, and panel just can realize a kind of whole white or holomelanocratic display state, and the various grey between white and black.Below just list a kind of electrophoresis disclosing solution to help set forth this patent, but and the panel not meaning that involved by this patent can only pour into electrophoresis disclosing solution containing adularescent and black colorant.Any one electrophoresis disclosing solution can be poured in micro-pond, meet the demand of practical application.
In the electrophoretic display apparatus that this patent is invented, also can be perfused with different electrophoresis disclosing solutions in different micro-pond subunits, namely include the colorant of different colours in often kind of electrophoresis disclosing solution, thus realize the display of multiple color or full color.To specifically set forth the display panel how utilizing this patent to invent below, the technology in conjunction with electrophoresis showed realizes the display of full color.
In current practical application, full color realizes by the combination of three kinds of basic colors or the combination of more colors.Such as LCDs expresses other colors, i.e. RGB system by the various combination of red (Red), green (Green), blue (Blue) three kinds of colors; In colour print and printing technology, three kinds of basic colors are cyan (Cyan), pinkish red (Magenta) and yellow (Yellow), i.e. CMY system.In electrophoretic display panel, Essential colour can adopt RGB system, also can adopt CMY system, or other colour systems.From the ultimate principle of color, electrophoretic display technology is similar to colour print or printing technology.Therefore color electrophoresis display screen can select CMY series, namely adopts cyan, magenta and yellow to be three kinds of basic colors.Following word is specifically described the electrophoresis showed how realizing full color based on CMY system, but this not meaning person's this patent be confined to CMY system.In actual applications, the electrophoretic display panel that this patent is invented can adopt any one colour system, including, but not limited to RGB system and CMY system; The selection of concrete Essential colour should decide according to the kind of colorant contained in the requirement of practical application and electrophoresis disclosing solution.
Can pour into three kinds of different electrophoresis disclosing solutions in micro-pond of electrophoretic display panel to realize CMY basic colors, the colorant containing wherein a kind of color in often kind of display liquid adds solid pigment particle or the organic dyestuff of a kind of public color (white or black).In the present invention, in order to provide white and black preferably, a kind of black/white electrophoresis disclosing solution can also be increased.Although a greater variety of color combination can provide more abundant color and broad chromatogram, but in the practical application of electrophoresis showed, this significantly can increase the workload of Color control software and the complexity of control circuit, also can increase preparation difficulty and the production procedure of electrophoretic display materials simultaneously.Therefore the combination of the preferred four kinds of electrophoresis disclosing solutions of the present invention realizes the electrophoresis showed of full color, more preferably the electrophoresis disclosing solution containing CMY tri-kinds of Essential colour and another public color respectively adds the combination of black/white electrophoresis disclosing solution, further the combination of preferred C/W (blue or green/white), M/W (magenta/white), Y/W (Huang/white) and K/W (black/white) electrophoresis disclosing solution.
In one embodiment of the invention, four kinds of electrophoresis disclosing solutions are poured in four adjacent micro-pond subunits respectively, as shown in Figure 3.Fig. 3 provides the enlarged drawing of 12 micro-pond subunits, and the micro-pond in each subunit is interconnected and is perfused with same electrophoresis disclosing solution; Every four adjacent subunits pour into different electrophoresis disclosing solutions respectively, and form a complete basic display unit.The plane viewing area of whole display device is made up of the basic display unit constantly repeated; Each basic display unit comprises micro-pond subunit of the electrophoresis disclosing solution being perfused with four kinds of different colours, and the order of the subunit of these four kinds of different colours can be any one combination.
Control electrode on control electrode panel is common technology of the prior art, and it can change the color of display screen display by making charged pigment particles move, as the content disclosed in Chinese patent CN100437714C and CN101373581.In one embodiment of the present invention, lower floor's control electrode panel there is an independently sub-cell electrode with the position corresponding to each micro-pond (or each micro-pond subunit), the size of the size of each control electrode and Wei Chi (or micro-pond subunit) is suitable, and each control electrode independently can apply voltage thus control the color state of micro-pond (or micro-pond subunit).When control display effect, adjacent four the micro-pond subunits 411,412,413 and 414 being perfused with the electrophoresis disclosing solution of different colours form a basic display unit as shown in 410, as shown in Figure 4.
The electrophoretic display panel of the present invention's design can reach the object of multicolour and full-color EL display by the method controlling single micro-pond color (or each micro-pond subunit) respectively.When the basic display unit of specifying needs a kind of color in display three kinds of basic colors time, only micro-pond of the electrophoresis disclosing solution containing this color need be urged to the state of saturation of this color, other micro-pond display white.As shown in Figure 4, when being perfused with M/W (pinkish red/white), C/W (blue or green/white), Y/W (yellow/white) and K/W (black/white) electrophoresis disclosing solution in micro-pond subunit 411,412,413 and 414 respectively, whole micro-pond in micro-pond subunit 411 is urged to the state of magenta (Magenta), micro-pond in other micro-pond subunit 412,413 and 414 is all urged to white states, and the overall color of this basic display unit is then magenta.Cyan and yellow display can be realized by similar method.The display of white is then more simple, only all secondary units need be urged to the state of white.Black then can by being urged to the inverse state of white by all micro-pond in four micro-pond subunits 411,412,413 and 414, namely four micro-pond subunits present magenta, cyan, yellow and black respectively, and at this moment basic display unit macroscopically presents black due to acting on of color addition.The display of other composite color needs the combination of the type of drive relating to more complicated.Again such as, when the C/W (blue or green/white) of micro-pond subunit 412 and 413 and micro-pond at Y/W (yellow/white) two kinds of electrophoresis disclosing solution places are driven into cyan and yellow state at one time respectively, other two micro-pond subunits 411 and 414 of same basic display unit are driven into the state of white, and whole basic display unit is then because cyan and yellow superposition are macroscopically presenting green.Other colors can be realized by the combination of similar adjacent micro-pond subunit color.
Be described for the control electrode panel of TFT or OTFT, but the present invention is not limited only to TFT or OTFT control electrode.Have relation according to the size of the gray scale of electrophoresis disclosing solution and the voltage of driving or driving time, in same electrical pressure, as employing ± 15V voltage, electrophoresis disclosing solution is along with the change of driving time, can be there is corresponding change in gray scale, utilize the change on driving time, can produce different gray scales.Carry out driving black-white electrophoresis display liquid, first give the sub-cell electrode input voltage on control electrode panel, electrophoresis disclosing solution is until show white state, i.e. brush screen, and then input reverse voltage, along with the change of driving time, black gray can increase gradually, until the state that saturated, entirely black, this time is Ts.If the GTG of this electrophoresis liquid to be divided into 8 GTGs, simply, at driving voltage 15V, be that (n-1) * Ts/ (8-1), n represent the n-th GTG by the driving time of each GTG.Namely, during n=8, expression is driven into entirely black.Other color electrophoresis display liquid, also can utilize the method.As pinkish red/white electrophoresis disclosing solution, first carry out brush screen, be namely first driven into complete white state, then carry out reverse voltage, namely the input queued switches time that the n-th GTG is corresponding be (n-1) * Ts/ (8-1).The combination of the different GTGs of so different electrophoresis disclosing solution, may be combined with out many colours.
The method of carrying out grey level driving also can drive the method for bistable electro-optic displays by referenced patent CN101430864A.TFT or OTFT can export the voltage of+15V ,-15V and 0V, and the voltage on common electrode panel is 0V.Have been found that, different by pixel from the driving voltage waveform required for the switching between different brackets, as color gray scale changes into grade 0 from grade 1, with be different from grade 1 voltage waveform changed to required for grade 2, and different colours gray scale be switched to the identical driving voltage waveform needed for color gray scale also may be different.
As color gray scale to change to the drive waveforms of grade 1 from grade 0:
| 1st frame | 2nd frame | 3rd frame | 4th frame | 5th frame |
| Driving voltage (V) | 15 | 0 | 15 | -15 | -15 |
The drive waveforms of grade 1 is changed to from grade 2:
| 1st frame | 2nd frame | 3rd frame | 4th frame | 5th frame | |
| Driving voltage (V) | 15 | 15 | 0 | -15 | -15 |
Above this, in two tables, driving voltage is all the driving voltage that control electrode panel exports, and public electrode voltages is 0V.So the data look-up table of the voltage waveform comprised needed for transformation need be stored, by data look-up table, find out relevant data, carry out the driving of color of object variation.By accurately controlling the driving voltage waveform of each micro-pond (or each micro-pond subunit), the different colourity of the color in single micro-pond and the change of gray scale can be realized.By the superposition of color between the subunit of each micro-pond, the general effect of multiple color can be presented in single basic display unit, and then realize the final goal of whole electrophoretic display panel full-color EL display.
5 respectively scheme by reference to the accompanying drawings, and the forming process of electrophoretic display apparatus of the present invention is described:
First, film on transparent conductive substrate:
As shown in Figure 5 a, on the band transparent glass substrate of conducting film 520 or plastic base 510, (included but not limited to: metering coating of carrying out ahead of schedule, as sheet mould coating, slit or extrusion coating, slip or stacked coating, curtain coating by the mode of coating; Roller coat, as knife-over roll, dip coated, spraying, spin coating, brushes; Silk-screen printing technique; Ink-jet printing process and other similar techniques), by non-conductive or that conductance is extremely low material 530, be evenly coated in the conducting film side of substrate, these materials can be the compositions of thermoplastic resin, thermoset resin or its precursor, as the composition of epoxy acrylate, polyurethane-acrylate, thickness is 1-1000 micron, preferred 5-500 micron, more preferably 10-500 micron, most preferably 10-100 micron; Also can be coated with radiation curable material film, as the urethane oligomer, the third two phenol-type epoxy resins etc. of acroleic acid esterification, select as required, film thickness is 1-1000 micron, preferred 5-200 micron, more preferably 10-100 micron, most preferably 10-30 micron.
Then, micro-pool array is prepared;
When substrate scribbles the composition of thermoplastic resin, thermoset resin or its precursor, the method for convex print is adopted to make micro-pool array:
By etching, engraving or the method for electroforming, according to the shape of the micro-pool array that will prepare, produce male mould, such as, male mould 540 shown in Fig. 5 b.
With the side coating thermoplastic resin, thermoset resin or its precursor of substrate, be pressed on male mould, under the condition of the glass transition temperature higher than thermoplastic resin used, thermoset resin or its precursor layer, with male mould, mold pressing is carried out to resin material layer, after cooling, mould separates with resin material layer, making case micro-pool array as fig 5d.
When substrate scribbles radiation curable material, the method for photoetching can be adopted to make micro-pool array:
By according to mask plate 590 shown in micro-pool array shape such as Fig. 5 c customized, with the radiation of ultraviolet or other form by the radiation curable material on the conducting film that is coated on transparent conductive substrate, directly carry out exposing, develop to come production example micro-pool array as fig 5d.
When electrophoretic display layer comprise device for casting and conduit etc. arrange time, then the micro-pool array prepared also will comprise those and arrange, the device for casting 552 that several groups of Wei Chi two ends are as fig 5d arranged and conduit 551.
And then, micro-pool array box is made:
Control circuit display panel substrate possesses multiple sub-cell control electrode, these sub-cell electrodes can be TFT or OTFT.Alite paste coated by the control electrode panel be made up of substrate and sub-cell electrode, and alite paste can be pressure-sensitive adhesive, hot-melt adhesive agent, radiation curing alite paste etc.Covered by micro-pool array on control electrode panel, micro-pool array and control electrode panel, towards the alite paste side of control electrode panel, by the mode of lamination, are pasted together, make micro-pool array box by the side in micro-pond.
Consider the perfusion of multiple electrophoresis disclosing solution, device for casting preferably carries out dislocation design, and, pour into the device for casting design of electrophoresis liquid of the same race in the same horizontal line, as shown in figure 5f, such design, be conducive to the openings of sizes increasing device for casting, also facilitate the perfusion of electrophoresis liquid of the same race.
Finally, in micro-pool array, electrophoresis disclosing solution is poured into:
Such as shown in Fig. 5 f, by prior art as the equipment such as kapillary, minute sized syringe needle, LCDs grouting equipment are injected into Wei Chili by needing the electrophoresis disclosing solution of perfusion by device for casting 552; Electrophoresis disclosing solution is made to be full of micro-ponds all in same subunit under the acting in conjunction of the capillary force produced because of surface tension in micro-pond at impressed pressure and liquid.If whole display device only pours into a kind of electrophoresis liquid, then only the device for casting end of micro-pool array box need be immersed in electrophoresis disclosing solution completely, keep conduit in atmosphere exposed, just electrophoresis disclosing solution can be poured in Wei Chizhong by capillary action.In micro-pond, original air and unnecessary electrophoresis disclosing solution are discharged by conduit 551 simultaneously, also can accelerate this filling process by the way of additional vacuum.After perfusion completes, by fluid sealant or hot sealing mode etc., conduit 551 and device for casting 552 are sealed, prevent entering of the loss of electrophoresis disclosing solution and air.
Embodiment
Illustrate specific design example below.The example lifted just sets forth this patent for helping, and is not intended that the invention be limited to cited example.
Embodiment 1:
One, the preparation of electrophoretic display apparatus
1 by male Mold Making micro-pool array
On the transparent glass substrate of the conducting film of band ITO formation, by the mode of knife-over roll, will the composition of epoxy acrylate, polyurethane-acrylate be comprised, be evenly coated in the conducting film side of substrate, thickness 25 microns.
By the method for etching, shape according to micro-pool array has produced male mould, wherein, each micro-pond subunit has 4 micro-ponds be interconnected, be interconnected between micro-pond subunit of only same file, and be not communicated with between laterally adjacent micro-pond subunit, the Wei Chi one end be interconnected has a perfusion end, and the other end has catheter end.
With the substrate side coating resin material, be pressed on male mould, under 60 DEG C of conditions, carry out mold pressing with male mould to resin material, after cooling, mould separates with resin material, makes micro-pool array 550.
The making of 2 micro-pool array boxes
As depicted in fig. 5e, control circuit display panel substrate 560 makes multiple sub-cell control electrode 570, thus composition control electrode panel, these sub-cell electrodes can be TFT or OTFT, each sub-cell electrode is corresponding with micro-pond subunit respectively, size is suitable, and independently can control the voltage of this micro-pond subunit.Pressure-sensitive adhesive 580 coated by the control electrode panel be made up of substrate 560 and sub-cell electrode 570.Covered by micro-pool array on control electrode panel, micro-pool array and control electrode panel, towards the alite paste side of control electrode panel, by the mode of lamination, are pasted together, make micro-pool array box by the side in micro-pond.
3 perfusion electrophoresis disclosing solutions
As shown in figure 5f, adopt the intrusion pipe with pin mouth, pin mouth is aimed at the device for casting that need pour into electrophoresis disclosing solution of the same race, electrophoresis disclosing solution is input on device for casting, is injected into Wei Chili by capillary force.In micro-pond, original air and unnecessary electrophoresis disclosing solution are discharged by the conduit 551 of subunit one end, micro-pond of same file simultaneously.After perfusion completes, with fluid sealant, conduit 551 and device for casting 552 are sealed, then completes the making of whole electrophoretic display apparatus.
Two, the display of electrophoretic display apparatus
Four kinds of display liquid prepared by known method have been poured in this electrophoretic display apparatus, namely with reference to figure 4,411 ~ M/W (pinkish red/white), 412 ~ C/W (blue or green/white), 413 ~ Y/W (yellow/white) and 414 ~ K/W (black/white), four adjacent thus micro-pond subunits constitute an Electronphoretic display unit.And, for the Electronphoretic display unit of in Fig. 4, by the voltage of each sub-cell electrode on regulable control panel, to control electrophoresis disclosing solution in corresponding micro-pond subunit to particular color, thus each Electronphoretic display unit is made totally to present certain color.Concrete control voltage and the color combination of display see the following form.
Test proves, utilize this electrophoretic display apparatus to realize full-color EL display, and color does not mix.
Claims (28)
1. an electrophoretic display apparatus, its electrophoretic display layer comprises multiple basic display unit, it is characterized in that, each basic display unit comprises one group of micro-pond subunit, micro-pond that each micro-pond subunit is interconnected by the perfusion that can realize electrophoresis disclosing solution is after encapsulation formed, the electrophoresis disclosing solution that described micro-pond is poured into after comprising encapsulation composition micro-pool array box; Different types of electrophoresis disclosing solution is poured into respectively in described adjacent micro-pond subunit;
The area of plane in described single micro-pond is 1 μm
2-4 × 10
8μm
2; The height in described single micro-pond is 1-1000 micron; The width of the interface channel between the micro-pond in each micro-pond subunit described is 1-100 micron; The device for casting dislocation design of described adjacent micro-pond subunit, and, pour into the device for casting design of electrophoresis disclosing solution of the same race in the same horizontal line;
Described basic display unit comprises four groups of micro-pond subunits; Four kinds of different electrophoresis disclosing solutions are perfused with in described display unit, wherein three kinds is the electrophoresis disclosing solution be made up of the basic colors colorant that a kind of colorant of public color is different with a kind of and public color dyes agent color, and another kind is the electrophoresis disclosing solution simultaneously containing adularescent and black colorant; Also comprise control electrode panel at electrophoretic display layer opposite side, described control electrode panel comprises substrate layer and conductive layer; Control electrode on described control electrode panel forms by organizing sub-cell electrode more, each sub-cell electrode is arranged to independently to carry out voltage-controlled structure to a subunit region, micro-pond or a micro-pond, and the sub-cell electrode of a group forms the control electrode of a basic display unit.
2. device as claimed in claim 1, is characterized in that, also comprise transparent common electrode panel in electrophoretic display layer side, and described transparent common electrode panel comprises transparent substrate layer and coating transparency conducting layer over the transparent substrate.
3. a preparation method for electrophoretic display apparatus, comprises the steps:
(1) nesa coating and transparent substrate layer form transparent common electrode panel, at the conducting film coated on one side layer of material film of transparent common electrode panel;
(2) material membrane described in the step (1) on transparency carrier is prepared into the micro-pool array having at least each the micro-pond in the subunit of same micro-pond to communicate with each other; The area of plane in single micro-pond is 1 μm
2-4 × 10
8μm
2; The height in single micro-pond is 1-1000 micron; The width of the interface channel between the micro-pond in each micro-pond subunit is 1-100 micron; The device for casting dislocation design of adjacent micro-pond subunit, and, pour into the device for casting design of electrophoresis disclosing solution of the same race in the same horizontal line; Basic display unit comprises four groups of micro-pond subunits; Four kinds of different electrophoresis disclosing solutions are perfused with in display unit, wherein three kinds is the electrophoresis disclosing solution be made up of the basic colors colorant that a kind of colorant of public color is different with a kind of and public color dyes agent color, and another kind is the electrophoresis disclosing solution simultaneously containing adularescent and black colorant; Described four kinds of electrophoresis disclosing solutions are respectively C/W (blue or green/white), M/W (pinkish red/white), Y/W (yellow/white) and K/W (black/white) electrophoresis disclosing solution;
(3) substrate layer and conductive layer form control circuit panel, multiple sub-cell control electrode is prepared at the conductive layer of control electrode panel, utilize sticky stick to be packaged together by the micro-pool array layer on the transparency carrier described in this control electrode panel and step (2), form micro-pool array box; Each sub-cell electrode on described control electrode panel is arranged to independently to carry out voltage-controlled structure to a subunit region, micro-pond or a micro-pond, and the sub-cell electrode of a group forms the control electrode of a basic display unit;
(4) in step (3) gained micro-pool array box, inject electrophoresis disclosing solution, micro-pool array box is sealed.
4. device as claimed in claim 1 or method according to claim 3, is characterized in that, described micro-pond subunit communicates with each other on a horizontal or longitudinal direction or both direction.
5. device as claimed in claim 1 or method according to claim 3, is characterized in that, described in Wei Chi one end of being interconnected be connected with device for casting, the other end is connected with conduit.
6. device as claimed in claim 1 or method according to claim 3, it is characterized in that, the area of plane in described single micro-pond is 4 × 10
2μm
2-1 × 10
4μm
2.
7. device as claimed in claim 1 or method according to claim 3, it is characterized in that, the height in described single micro-pond is 10-30 micron.
8. device as claimed in claim 1 or method according to claim 3, it is characterized in that, the width of the interface channel between the micro-pond in each micro-pond subunit described is 1-100 micron.
9. device as claimed in claim 8 or method, it is characterized in that, the width of the interface channel between the micro-pond in each micro-pond subunit described is 2-50 micron.
10. device as claimed in claim 8 or method, it is characterized in that, the width of the interface channel between the micro-pond in each micro-pond subunit described is 2-20 micron.
11. device as claimed in claim 1 or methods according to claim 3, is characterized in that, the pool wall in described micro-pond is made up of non-conductive or that conductance is extremely low material.
12. device as claimed in claim 1 or methods according to claim 3, is characterized in that, the shape in described single micro-pond is square, rectangle, rhombus, triangle, hexagon, octagon, circle, ellipse, spherical, elliposoidal.
13. device as claimed in claim 12 or methods, is characterized in that, the shape in described single micro-pond is rhombus.
14. device as claimed in claim 2 or methods according to claim 3, is characterized in that, the electrically conducting transparent layer material of described transparent common electrode panel is selected from indium tin oxide, zinc paste, tin ash or indium oxide.
15. device as claimed in claim 2 or methods according to claim 3, it is characterized in that, the transparent substrate material of described transparent common electrode panel is selected from terephthaldehyde's base acid second diester, nylon, polystyrene, tygon, polymethylmethacrylate or Polyvinylchloride.
16. device as claimed in claim 2 or methods according to claim 3, is characterized in that, described transparent common electrode panel is the glass board material being coated with tin indium oxide.
17. device as claimed in claim 2 or methods according to claim 3, is characterized in that, described transparent common electrode panel is the plastics being coated with tin indium oxide.
18. method as claimed in claim 17 or devices, it is characterized in that, described transparent common electrode panel is the polyester material being coated with tin indium oxide.
19. method as claimed in claim 17 or devices, is characterized in that, described transparent common electrode panel is the terephthaldehyde's base acid second diester being coated with tin indium oxide.
20. device as claimed in claim 2 or methods according to claim 3, it is characterized in that, the substrate material of described control electrode panel is selected from terephthaldehyde's base acid second diester, nylon, polystyrene, tygon, polymethylmethacrylate or Polyvinylchloride, epoxy resin, glass.
21. device as claimed in claim 2 or methods according to claim 3, is characterized in that, the conductive of described control electrode panel is selected from tin indium oxide (ITO), zinc paste (ZnO), tin ash (SnO
2) or indium oxide (In
2o
3), gold (Au), silver (Ag), copper (Cu), aluminium (Al), thin film transistor (TFT) (ThinFilmTransistor), OTFT (OrganicThinFilmTransistor).
22. device as claimed in claim 2 or methods according to claim 3, is characterized in that, the substrate of described control electrode panel is the thin film transistor (TFT) of glass substrate or the OTFT of flexible base, board.
23. device as claimed in claim 1 or methods according to claim 3, is characterized in that, each sub-cell electrode of described control electrode is arranged to can the size of independent control voltage and the structure of driving time.
24. devices as described in claim 1,2 or method according to claim 3, it is characterized in that, described electrophoresis disclosing solution is a kind of single-particle system, and namely only have a kind of charged solid pigment particle to be dispersed in the solvent containing organic dyestuff, solid pigment and dyestuff have different colors.
25. devices as described in claim 1,2 or method according to claim 3, is characterized in that, described electrophoresis disclosing solution is a kind of two particle or multi-particles System, namely has the solid pigment particle dispersion of two kinds of different colours at least in the solution.
26. device as claimed in claim 1 or methods according to claim 3, is characterized in that, the colorant of described public color is white color agents or black colorant.
27. devices as claimed in claim 1, is characterized in that, the color combination of the colorant in described four kinds of different electrophoresis disclosing solutions is respectively black/white, red/white color, blue/white and green/white.
28. device as claimed in claim 1 or methods according to claim 3, is characterized in that, the color combination of the colorant in described four kinds of different electrophoresis disclosing solutions is respectively black/white, cyan/white, magenta/white and yellow/white.
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| PCT/CN2011/078554 WO2012031520A1 (en) | 2010-09-06 | 2011-08-18 | Electrophoretic display device and production method thereof |
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| CN111698492B (en) * | 2020-06-18 | 2021-04-02 | 掌阅科技股份有限公司 | Method, terminal and computer readable storage medium capable of locally changing display color |
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| CN1862351A (en) * | 2006-06-12 | 2006-11-15 | 天津大学 | Preparation of microcheck method electrophoresis display |
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| CN101738814B (en) * | 2009-11-11 | 2013-09-18 | 广州奥翼电子科技有限公司 | Electrophoresis disclosing solution and preparation method thereof |
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