CN102591087B - 3D (three-dimensional) mixed-color electronic paper - Google Patents
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- CN102591087B CN102591087B CN201210067297.4A CN201210067297A CN102591087B CN 102591087 B CN102591087 B CN 102591087B CN 201210067297 A CN201210067297 A CN 201210067297A CN 102591087 B CN102591087 B CN 102591087B
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Abstract
The invention relates to a piece of 3D (three-dimensional) mixed-color electronic paper, comprising a tricolor structure and a background structure which are connected with a driving electrode, wherein the tricolor structure comprises a monocolor structure and a bicolor structure, the monocolor structure and the bicolor structure are designed into a dual-layer overlapped structure, and the background structure is a black-white switching layer placed under the tricolor structure. Compared with the prior art, the 3D mixed-color electronic paper has the beneficial effects that the brightness of a single pixel can be increased, the black state is more black, the white state is more white, and the realistic color storage display effect can be realized; and the color reflection function of the existing electronic paper material in a display mode can be used with the maximum efficiency, and the color reproduction area can be enlarged. The black-white switching layer switches between black color and white color according to different color generation modes and can reach 90 % of the white background reflectivity, the color rendering pixel of the electronic paper can be more colorful, and the display contrast is increased, so that the electronic paper is more approximate to the normal paper and suitable for being applied to more fields.
Description
Technical field
The invention belongs to electronic paper technology field, be specifically related to the color electric paper of three-dimensional colour mixture.
Background technology
The overall development process of Electronic Paper can be summarized and be divided into three developing stage, and the first stage has storage, utilizes surround lighting to show, and the white and black displays of energy saving, flicker free vision close friend, with electronic reader and e-book etc. for main application fields; Subordinate phase can realize multicolor displaying, but cannot meet the requirement of video display, and can be applied to magazine, advertisement, market range of application is widened further; Phase III to reach the video display response speed of demand and the color rendering of full-color EL display.Wherein subordinate phase is the key that can Electronic Paper product finally occupy reader leading position, and thus color electric paper is the R&D direction of numerous manufacturer, but up to now, does not still have ripe scheme to move towards market.
The technical scheme of existing color electric paper has a variety of, and more influential color mode is cholesteric, optical filtering flap-type, colour particles type and Electrowetting type scheme.In color electric paper, display effect quality depends on the situation of the reflection strength of black, white, three primary colours five kinds of states.In existing display mode, have and directly utilize particle scattering or liquid, solid-state surface reflection, also utilize birefringent selection to reflect or scattering.Up to the present, be which kind of display mode all cannot obtain desirable colour display state simultaneously, main restriction is chroma-luminance and color reproduction scope.
Color cholesteric liquid crystal Electronic Paper adopts lamination display to reach full-color EL display object, the principle of this technical scheme is as follows: cholesteric liquid crystal material has unique light reflection selectivity characteristic, the ratio of cholesteryl liquid crystal is different, select the wavelength of reflecting light also different, can realize the light reflecting red, green, blue three kinds of wavelength by selecting suitable material, these three kinds of light realize full-color EL display as the three primary colours of additive color mixing.The basic structure of cholesteric liquid crystal electronic paper pixel is sandwich construction, and each pixel stackingly to be formed by 3 layers that can reflects respectively " indigo plant-green-red ", also has indigo plant-green-red three kinds of liquid crystal materials mutual not overlapping being placed in same layer spaced apart to realize color overlaid.Bottom is light absorbing black layer, each reflection horizon (or unit) is to 3 kinds of corresponding changes of primary colours light reflectance in surround lighting, the primary lights of the 3 kinds of suitable intensity reflected just can be mixed into certain color required according to colour mixture principle, thus realize colored display.Its advantage is that color effect brightness is better, and shortcoming is that the display effect of black, white state is poor, and particularly white states is gloomy.
The color electric paper of optical filter mode is used to be easy to technically realize, but color filter can reduce light reflectivity or display brightness, be combined into a display pixel with multiple colored sub-pixel simultaneously and must there is no overlap, reduce the pixel quantity of unit area, this scheme realizes colored display to reduce brightness and resolution for cost.To the display mode of TFT with backlight, by improving the brightness of backlight, high brightness and high resolving power can be realized, obtaining excellent display effect.For Electronic Paper pattern, utilize surround lighting to reach electronical display, its tone heights relies on the reflectivity of Electronic Paper, and this is the limitation place of colored filter application.Therefore, many manufacturers and research institution all being devoted to develop pixel self there is reflected colours optical property, just can realize the electronic paper technology that colour shows without the need to colored filter.
The technology of colored filter is not needed to have cholesteric liquid crystal electronic paper, horizontal electrophoretic techniques, inverted emulsion electrophoretic techniques, electrowetting technology, interferometry modulation technique, photonic crystal display, electrochromic display etc.Horizontal electrophoretic techniques and inverted emulsion electrophoretic techniques, these two kinds of EPD can utilize the mechanism of self reflect color light of its pixel to realize colored display.Horizontal electrophoretic display technology, the characteristic such as high brightness and the high grade of transparency makes IP-EPD that various ways can be adopted to realize colored display.These two kinds of electrophoretic techniquess are all adopt the method for sub-pixel superposition to realize colored display.The pixel of the wetting display of electricity is a kind of sandwich construction be made up of water, pigment oil, hydrophobic material, transparency electrode, white substrate etc.When not having impressed voltage, pigment oil defines a stable flat oil film on hydrophobic material surface, can reflect ambient light and make pixel show a colored point; When on electrode during on-load voltage, its electric field produced makes the hydrophobicity of hydrophobic material decline, the water on upper strata can as much as possible with hydrophobic material surface contact, thus cause pigment oil to be pushed to, white substrate below reveals, and makes pixel be shown as white point.Utilize EWD to the reflection characteristic of colorama, blue-green (Cyan), carmetta (Magenta), yellow (Yellow) 3 kinds of primary colours EWD display layers will be adopted stacking, and the CMY primary lights that it can be utilized to reflect respectively realize colored display in substractive color mixing mode.The power consumption of EWD is very low, but does not possess zero-power bistable characteristic.Interferometry modulation technique is similar to the principle of the Fabry Perot etalon (Fabry-Perot etalon) in optics, its major defect makes that to have nanoscale very difficult apart from adjustable two reflectings surface, and range deviation will cause contrast to decline.The challenge particularly manufacturing millions of zero defect display units in the Electronic Paper display surface of several inches is huge.Interferometry modulation technique color sub-pixel is realized color method and is realized by RGB three primary colours juxtaposition.Photonic crystal display (Photonic Crystal Display, PCD) technology is that the wavelength powering up rear single pixel changes and can cover whole spectral range.In existing color display method, realize colored display by the lamination of three primary colours and two kinds of modes arranged side by side.These two kinds of modes can produce desirable Electronic Paper from theory, but also there is a big difference apart from desired target for the effect of in fact color electric paper.Chief reason is that the performance of three primary colours is unbalanced, be no matter additive color mixing or substractive color mixing to current sub-pixel structure, all cannot to coloured light efficiency utilization and loyal reproduction.
Summary of the invention
The object of this invention is to provide a kind of color electric paper of three-dimensional colour mixture of novel colour mixture principle, the display that this kind of Electronic Paper compared with prior art can realize between high brightness white and colour switches, be that there is higher contrast and chroma-luminance, the alternative display that newspaper, magazine etc. have the papery of color rendering can be met.
To achieve these goals, the present invention adopts following technical scheme: a kind of three-dimensional colour mixture Electronic Paper, comprise the three primary colours structure and background structure that are connected with drive electrode, it is characterized in that described three primary colours structure comprises two-part structure, Part I structure is single primary colours structure, Part II structure is two kinds of primary colours structures of the non-overlapping copies of laid out in parallel, Part I structure is any one primary lights structure in reflection three primary colours, after Part I structure applies electric signal, colorama disappears, form hyaline layer, or hyaline layer disappears after applying electric signal, form color layer, Part II structure is two unit of the other two kinds of primary lights in reflection three primary colours except the primary lights that Part I structure uses, the reflection flux of the primary lights that two unit are corresponding or to absorb luminous flux identical, reflection flux or absorb luminous flux consistent with Part I structure respectively, the luminance factor of the reflective surface area ratio of Part I structure and Part II construction geometry profile and reflection two kinds of primary lights is proportional, both any one primary lights area occupied and reflectivity were inversely proportional to, Part I structure and Part II structure are two superimposed structure, Part I structure is upper strata, Part II structure is lower floor, net area sum shared by Part II structure primary lights equals Part I structure primary lights area, each primary colours of described three primary colours structure have separately independently drive electrode respectively, and the coloured light of three primary colours changes with the change of applied electronic signal, described background structure is black and white switchable layer, and the drive electrode of black and white switchable layer is independent drive motors, and black and white switchable layer is placed in below the Part II structure of three primary colours structure, the area equation of area and Part II structure.
The three-dimensional colour mixture Electronic Paper of one of the present invention, is characterized in that the primary colours of described Part I structure are reflectivity or the most weak a kind of primary lights of absorptance in three primary colours system.
The three-dimensional colour mixture Electronic Paper of one of the present invention, is characterized in that: described Part I structure is cholesteryl liquid crystal electric control structure unit, or other reflection-type electric control structure unit, or the electric control structure unit of absorption base coloured light.
The three-dimensional colour mixture Electronic Paper of one of the present invention, is characterized in that: two kinds of primary colour units of described Part II structure are at same plane, or not at same plane, two kinds of primary colour unit is along the projection non-overlapping copies of normal direction.
The three-dimensional colour mixture Electronic Paper of one of the present invention, is characterized in that: the black and white switchable layer of described background structure is liquid crystal type Electronic Paper, or electrophoretype Electronic Paper, or other can realize the Electronic Paper of black and white switching type.
The three-dimensional colour mixture Electronic Paper of one of the present invention, is characterized in that the black and white switchable layer of described background structure, when Part I structure and Part II structure are absorption-type display modes, and the most white states of the corresponding Part III structure of colored display; When Part I structure and Part II structure are reflection-type display modes, the most black state of the corresponding Part III structure of colored display.
The Part I structure of three-dimensional colour mixture Electronic Paper, it can be the cholesteryl liquid crystal that one deck has bistable state effect, also can be the electric control structure unit with reflection function or absorption base coloured light of other kind, power up rear transparent Electronic Paper display mode, as Electrowetting type, horizontal electrophoretic techniques and electrochromism isotype.In order to obtain best display effect, according to the principle of additive color mixing or substractive color mixing, the primary color that ground floor is arranged selects reflectivity in three primary colours system or the most weak a kind of primary lights of absorptance, to realize high brightness.
The Part II structure of three-dimensional colour mixture Electronic Paper, require that these two kinds of primary lights corresponding parts are identical to the reflection flux of respective dependency basis coloured light or absorption luminous flux, and reflection flux or to absorb luminous flux completely the same with Part I after absorbing through substrate and each functional membrane, colour mixture aberration is avoided to produce, whether identical its display mode is with Part I, do not require.But between the structural unit of two kinds of primary lights, can not be overlapping along normal direction after arrangement.For effectively utilizing viewing area, improve resolution, two parts each other between be interposed between the condition that technique allows under, should be little as far as possible, can avoid and reduce coloured light outside primary lights and produce.According to above-mentioned design, reflection or the absorption luminous flux of three kinds of primary lights are consistent, under the control of drive singal, form the Electronic Paper of full-color EL display.
The Part III structure of three-dimensional colour mixture Electronic Paper, is change extra electric field as required to show black state or white state, can switches, therefore be called black and white switchable layer between black and white.The electronic paper type realizing black and white switching can be cholesteric liquid crystal electronic paper-type, also can be electrophoretype, or the Electronic Paper of other type can realize white and black displays.This part display rule is, when what current two parts were selected is absorption-type display mode, the corresponding Part III structure of colored display is most white states, increases secondary light reflex, improves absorbing material to the utilization factor of surround lighting; When what current two parts were selected is reflection-type display mode, the most black state of the corresponding Part III structure of colored display, reducing secondary reflection light affects the excitation of primary lights.
Convenient for displaying principle is described, set Part I for blue (B), Part II is made up of (G) redness (R) and green, and three color sub-pixel are reflection type.For three primary colours and black and white state, be listed below: during display blueness (B) look, Part II structure all switches to pellucidity, and Part III structure sub-pixels is shown as black; During display redness (R) look, Part I structure switches to pellucidity, and green (G) sub-pixel of Part II switches to clear state, and Part III sub-pixel is shown as black; During display green (G) look, Part I switches to pellucidity, and redness (R) sub-pixel of Part II switches to clear state, and Part III sub-pixel is shown as black; Display black and white state, Part I and Part II all switch to pellucidity, and Part III sub-pixel is corresponding is shown as white or black; In like manner can show various Neutral colour, by adjusting display brightness that is black, white, three primary colours.The white state of certain display also has other to combine, and does not enumerate here.
The beneficial effect of three-dimensional colour mixture Electronic Paper provided by the invention is as follows:
Three-dimensional colour mixture Electronic Paper provided by the invention compared with prior art, the three-dimensional colour sub-pixel arrangement of space del is adopted to realize three-dimensional colour mixture, add black can to disappear absorption layer simultaneously, i.e. black and white switchable layer, the brightness of single pixel can be increased, make black state more black, white states is whiter, realizes color image storage display effect very true to nature.
Space provided by the invention del structure maximal efficiency can utilize the color reflection performance of existing electronic paper material display mode, improves color reproduction scope.This structure is compared with rhythmo structure, parallel construction, can maximally utilise the most weak primary lights reflection, realize large luminous flux, can reduce again the impact of non-color status on color intensity.The display of high resolving power, high brightness, high color purity can be realized.
Structure provided by the invention, Part III structure is black and white switchable layer, and white states is background white, and black state is background black.According to the difference of color generate pattern, when colour element is reflective-mode, Part III structure switches to black, and when colour element is absorption mode, Part III structure switches to white.In fact, when Part III switches to white, first and second part-structure is that clear state can realize high white reflection rate, the white background reflectance rate of 90% can be reached in theory, the raising of white background reflectance rate makes the coloured pixel color of color electric paper more bright-coloured, improve display comparison degree, make Electronic Paper closer to plain paper.
The present invention is that color electric paper realizes wide colour gamut, the display performance of high reflectance provides an excellent structural support, to adapt in more areas application, as the application in magazine, advertisement.
Accompanying drawing explanation
Drawings attached two width of the present invention, wherein
Fig. 1 is the dot structure schematic diagram of three-dimensional colour mixture Electronic Paper,
Fig. 2 is the planing surface schematic diagram of the three-dimensional colour mixture Electronic Paper of embodiment.
In accompanying drawing,
1: first substrate; 2: second substrate; 3: the three substrates; 4: the tetrabasals; 5: the five substrates; 6: light-absorption layer; 7: the first vertical alignment layers; 8: the second vertical alignment layers; 9: the three vertical alignment layers; 10: the four vertical alignment layers; 11: the five vertical alignment layers; 12: the straight alignment films of sextuple; 13: the seven vertical alignment layers; 14: the eight vertical alignment layers; 15: first substrate electrode; 16: second substrate electrode; 17: the three electrode of substrate; 18: the tetrabasal electrodes; 19: the five electrode of substrate; 20: the six electrode of substrate; 21: the seven electrode of substrate; 22: the eight electrode of substrate; 23: the first liquid crystal layers; 24: the second liquid crystal layers; 25: the three liquid crystal layers; 26: the four liquid crystal layers; 27,28: amorphous transparent layer and PI layer; 29: primary colours one; 30: primary colours two; 31: primary colours three; 32: black and white switchable layer.
Embodiment
In order to make those skilled in the art understand better and realize the present invention, be described in detail the specific embodiment of the present invention below in conjunction with the drawings and specific embodiments, protection scope of the present invention is not limited to the scope described in specific embodiment.
Embodiment is by the Electronic Paper comprising the three-dimensional colour mixture that substrate, electrode of substrate, liquid crystal compound, interval insulant, hermetic unit, lead-in wire electrode, light-absorption layer and driver element form, substrate is transparency carrier, substrate was made up of 3 ~ 5 stacked adding, seal between the substrate of superposition, between each laminar substrate, be provided with interval insulant; Liquid crystal compound is placed between each laminar substrate and forms Part I structure, Part II structure and black and white switchable layer, the face that each substrate contacts with liquid crystal compound arranges electrode of substrate layer, electrode of substrate layer is drawn by lead-in wire electrode, and the outside of electrode of substrate layer is provided with vertical alignment layer; Light-absorption layer is placed in below underlying substrate.
Embodiment
As shown in Figure 2, the Electronic Paper general structure of a kind of three-dimensional colour mixture that the present embodiment provides is by first substrate 1, second substrate 2, 3rd substrate 3, tetrabasal 4 and the superposition of the 5th substrate 5 are formed, comprise two parts color cholesteric liquid crystal layer and black and white switchable layer (light-absorption layer is 6), liquid crystal compound is equipped with respectively in color cholesteric liquid crystal layer and black and white switchable layer inside, liquid crystal compound can under plane state molecules align reflect red, green, blue three kinds of primary lights and full spectrum, the first cholesteric liquid crystal layers 23 (indigo plant) between first substrate 1 and second substrate 2, i.e. Part I structure structure 29, the second cholesteric liquid crystal layer 24 (green) between second substrate and the 3rd substrate, i.e. the first primary colour unit 30 of Part II mechanism, 3rd the 3rd cholesteric liquid crystal layers 25 (red) between substrate and tetrabasal, i.e. the second primary colour unit 31 of Part II mechanism, the 4th cholesteric liquid crystal layers 26 (in vain) between tetrabasal and the 5th substrate, 4th cholesteric liquid crystal layers 26 (in vain) and light-absorption layer 6 form black and white switchable layer 32.With the 3rd liquid crystal layer 21 (red) normal direction overlapping region between second substrate and the 3rd substrate, be arranged to transparent amorphous layer and PI layer 27, namely with liquid crystal material contact stabilization be the organic layer of photoetching.The 3rd between substrate and tetrabasal with the second liquid crystal layer 24 (green) normal direction overlapping region, be arranged to transparent amorphous layer and PI layer 28, identical with PI layer 27 with amorphous layer.First vertical alignment layer 7 is adjacent with the first liquid crystal layer 23 respectively with the second vertical alignment layer 8; 3rd vertical alignment layer 9 and the 4th vertical alignment layer 10 are adjacent with the second liquid crystal layer 24 respectively.5th vertical alignment layer 11 is adjacent with the 3rd liquid crystal layer 25 respectively with the straight alignment films of sextuple 12.The Part II structure of the three-dimensional colour mixture of the composition such as electrode, cholesteric liquid crystal layers, alignment films between substrate 2,3,4.5th vertical alignment layer 13 is adjacent with the 4th liquid crystal layer 26 respectively with the straight alignment films of sextuple 14.
Position relationship between electrode and alignment films is as follows: first substrate electrode 15 is adjacent with the second vertical alignment layer 8 with the first vertical alignment layer 7 respectively with second substrate electrode 16; 3rd electrode of substrate 17 and tetrabasal electrode 18 are adjacent with the 4th vertical alignment layer 10 with the 3rd vertical alignment layer 9 respectively; 5th electrode of substrate 19 and the 6th electrode of substrate 20 are adjacent with sextuple straight alignment films 12 with the 5th vertical alignment layer 11 respectively; 7th electrode of substrate 21 and the 8th electrode of substrate 22 are adjacent with the 8th vertical alignment layer 14 with the 7th vertical alignment layer 13 respectively.
As shown in Figure 2, black and white switchable layer is made up of cholesteric liquid crystal layer, electrode, vertical alignment layer and the light-absorption layer 6 between tetrabasal and the 5th substrate.Inner liquid crystal compound of filling can reflected white-light, powers up to become transparent, shows light-absorption layer 6 and can switch to black.
In example, do not list whole composition structures of Electronic Paper one by one, have ignored the part known by those skilled in the art such as interval insulant, hermetic unit, lead-in wire electrode and driver element here, this does not have an impact to understanding the present invention.
Concrete processing technology, Part I structure, Part II structure are substantially identical with the technological process of stn liquid crystal display with common TN with black and white switchable layer three part, difference is: on the substrate surface of band ito transparent electrode layer, form one deck PI vertical alignment layer, its THICKNESS CONTROL is right at 400 Izods, thickness error allows for ± 100 dusts within; The SE1211 of PI vertical orientated materials'use Nissan Chemical or other similar vertical orientated material, during coating, the solid content of thinning agent adjusts to 5%, and its error range is 0.1%; Transparent amorphous layer described above, uses photoetching technique manufacture.The thin layer of uniform thickness had both play a part to separate red and green liquid crystal layer, was again the important component part of the interval insulant between two substrates.Liquid crystal material uses the potpourri of RDP-99965ChBZ1 and RDP-99794 of DIC company, red, green, blue, can be realized by the ratio adjusting three kinds of liquid crystal in vain.Select the difference of the reflection strength of reflection according to liquid crystal, need suitable adjustment thickness of liquid crystal layer parameter, reach best color display effect.Electrode adopts transparency electrode, as common ito transparent electrode, also can adopt the electrode that the organic material of PEDOT is made.The thickness of substrate is less than 0.3mm, and can realize best three-dimensional color blending effect, substrate is thinner, and color blending effect is better.Various colour display and the options of black display few, easy understand, but show in vain and have three kinds of white states and be presented;
A () Part I and Part II are Focal conic state, black and white switchable layer is white
B () Part I and Part II are plane state, black and white switchable layer is white
C () Part I and Part II are plane state, black and white switchable layer is black
Above three kinds of states can background as required switch in vain, a () has best white background, the inclined grey of white background of (b), the cholesteric Electronic Paper white displays state of its white brightness and other type is close, and (b) is between (a), (c).Common display background is formed as well in (a) mode in vain for this reason.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Such as only use three laminar substrates to realize color layer two-part structure, redness and green are separated out with division wall, green and redness, between identical two pieces of substrates, are also the modes that the present invention easily realizes.For the Electronic Paper pattern of other non-cholesteryl liquid crystal, such as electrochromism, horizontal electrophoretic techniques etc. are applicable to the present invention too.Use other patterns such as electrophoresis-type to be all applicable to the present invention as black and white switchable layer.Display mode for single primary lights or black and white switchable layer changes, and ought to be covered by among the invention of three-dimensional colour mixture.All within change of the present invention and change, any amendment made, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a three-dimensional colour mixture Electronic Paper, comprise the three primary colours structure and background structure that are connected with drive electrode, three primary colours structure comprises two-part structure, the Part I structure of three primary colours structure is single primary colours structure, the Part I structure of three primary colours structure is any one primary lights structure in reflection three primary colours, and after the Part I structure applying electric signal of three primary colours structure, colorama disappears, and forms hyaline layer, or hyaline layer disappears after applying electric signal, form color layer, it is characterized in that: the Part II structure of described three primary colours structure is two kinds of primary colours structures of the non-overlapping copies of laid out in parallel, the Part II structure of three primary colours structure is two unit of the other two kinds of primary lights in reflection three primary colours except the primary lights that Part I structure uses, the reflection flux of the primary lights that two unit are corresponding or to absorb luminous flux identical, reflection flux or absorb luminous flux consistent with the Part I structure of three primary colours structure respectively, the Part I structure of three primary colours structure and Part II structure are two superimposed structure, the Part I structure of three primary colours structure is upper strata, the Part II structure of three primary colours structure is lower floor, net area sum shared by the Part II structure primary lights of three primary colours structure equals the Part I structure primary lights area of three primary colours structure, each primary colours of described three primary colours structure have separately independently drive electrode respectively, and the coloured light of three primary colours changes with the change of applied electronic signal, described background structure is black and white switchable layer, and the drive electrode of black and white switchable layer is independent drive motors, and black and white switchable layer is placed in below the Part II structure of three primary colours structure, the area equation of the Part II structure of area and three primary colours structure.
2. a kind of three-dimensional colour mixture Electronic Paper as claimed in claim 1, is characterized in that: the primary colours of the Part I structure of described three primary colours structure are a kind of primary lights that in three primary colours system, reflectivity is the most weak.
3. a kind of three-dimensional colour mixture Electronic Paper as claimed in claim 1, is characterized in that: the Part I structure of described three primary colours structure is cholesteryl liquid crystal electric control structure unit, or other reflection-type electric control structure unit.
4. a kind of three-dimensional colour mixture Electronic Paper as claimed in claim 1, is characterized in that: two kinds of primary colour units of the Part II structure of described three primary colours structure are at same plane, or not at same plane, two kinds of primary colour unit is along the projection non-overlapping copies of normal direction.
5. a kind of three-dimensional colour mixture Electronic Paper as claimed in claim 1, is characterized in that: the black and white switchable layer of described background structure is liquid crystal type Electronic Paper, or electrophoretype Electronic Paper, or other can realize the Electronic Paper of black and white switching type.
6. a kind of three-dimensional colour mixture Electronic Paper as claimed in claim 5, is characterized in that: the black and white switchable layer of described background structure, when Part I structure and the display of Part II structure, and the most black state of the corresponding background structure of colored display.
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| US11009761B2 (en) | 2016-08-15 | 2021-05-18 | Dalian DKE LCD Co., Ltd. | Grayscale color electronic paper |
| CN106054426A (en) * | 2016-08-15 | 2016-10-26 | 大连东方科脉电子股份有限公司 | Grayscale electronics-paper |
| CN108037625B (en) * | 2018-01-31 | 2023-08-15 | 浙江东方科脉电子股份有限公司 | Color electronic paper display device with three-layer superposition structure |
| CN111161683B (en) | 2020-01-03 | 2021-05-18 | 京东方科技集团股份有限公司 | Image processing method, image processor and display device |
| CN113450731B (en) * | 2021-07-29 | 2023-05-23 | 浙江富涌电子科技有限公司 | Gbrwk mixed color electronic paper display device and display method thereof |
| CN117116223A (en) * | 2023-08-28 | 2023-11-24 | 南通芯洛图电子科技有限公司 | Reflective display device capable of realizing multi-gray scale display |
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