CN206877015U - One species diversity electric charge technicolo electrophoretic display device - Google Patents
One species diversity electric charge technicolo electrophoretic display device Download PDFInfo
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- CN206877015U CN206877015U CN201720477549.9U CN201720477549U CN206877015U CN 206877015 U CN206877015 U CN 206877015U CN 201720477549 U CN201720477549 U CN 201720477549U CN 206877015 U CN206877015 U CN 206877015U
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Abstract
The utility model discloses a species diversity electric charge technicolo electrophoretic display device, include the pel array of multiple repetitions, pixel includes first substrate, second substrate, three between first substrate and second substrate or more than three sub-pixels and drive device, sub-pixel both sides are provided with sealed spacer wall one, contain electrophoresis liquid in sub-pixel, electrophoresis liquid includes solvent or solvent mixture, the white particles and black particles opposite with the charge polarity being dispersed in the solvent or the solvent mixture, and pigment particles, the pigment particles are positive electricity including state of charge, it is any two kinds in the particle of negative electricity and three kinds of state of charge of electroneutral.The utility model using same color there are the pigment particles of difference state of charge to be closed in single sub-pixel, by pigment particles respectively with black, white particles colour mixture, effectively widen the tonal gradation that color is shown, the blend of colors of three or more than three sub-pixels with high-order gray scale, can realize full-color EL display.
Description
Technical field
The utility model belongs to electronic paper technology field, more particularly to a species diversity electric charge technicolo electrophoretic display device.
Background technology
In recent years, on monochromatic or polychrome Electronic Paper basis, a variety of color electric paper technical schemes are developed, greatly
Cause can be divided into electrophoretype, cholesteric liquid crystal type, Electrowetting type and mixed type etc..Electrophoretype mainly includes optical filter type and pigment particles
Type.Cholesteric liquid crystal type has along face colour mixture and three stackings plus colour mixture.Mixed type is mainly three-dimensional colour mixture color electric paper, by monochromatic electricity
Swimming type and cholesteric liquid crystal type composition.In the utility model, electrophoretype color electric paper is focused primarily on.To realize electrophoretype electricity
The colorization of sub- paper, colored filter is superimposed generally in the electrophoresis layer of observation side to show red, green and blue color, is as filtered
Piece type color electrophoresis type Electronic Paper.The shortcomings that optical filter type color electrophoresis type Electronic Paper is that chroma-luminance is low, and gray scale is limited to black
The white optical characteristics of electrophoresis layer and the light of optical filter pass through efficiency.Pigment particles type color electrophoresis type Electronic Paper, it is to use four kinds
Different types of particle, wherein three kinds are color pigment particles.If a kind of particle is black, three kinds of particles are respectively in addition
The pigment particles of red, green and blue.The white that pixel is shown is superimposed generation, its colour mixture via the sub-pixel of display red, green, blue color
Principle is addition colour mixture.If pigment particles type color electrophoresis type Electronic Paper utilizes subtractive colour mixture principle, a kind of particle is white,
Other three kinds of particles are blue or green, pinkish red and yellow uitramarine particle respectively, and the black that pixel is shown is by display green grass or young crops, pinkish red, yellow son
Pixel superposition generation.The former is better than the latter to black image quality, and white image quality the latter is better than the former.
In addition, by setting color to stop that particle realizes that the color of color electrophoresis type Electronic Paper shows to adjust gray scale
Show.The gray level of this mode, which can only be realized, stops grey scale change caused by particle, stops that particle can not be realized by dim to bright
Bright a wide range of adjustment.Electrowetting type colour displaying scheme, in colour mixture principle with the color schemes of electrophoretype, cholesteric liquid crystal type
It is similar.But because monochrome shows that also no scheme realizes volume production, the maturation of colored displaying scheme takes longer for
It is possible to realize.
By more than analyze, although color electric paper scheme continues to bring out, colour gamut existing for color electric paper it is narrow and
The problems such as gray level is low still need further to improve.Three kinds of electrophoretype, cholesteric liquid crystal type, Electrowetting type solutions are each advantageous
And constantly make progress, but be required to further improve in colour gamut, gray scale and cost etc..
Utility model content
According to technical problem existing for colour gamut set forth above, gray scale etc., and provide a species diversity electric charge technicolo
Electrophoretic display device.The utility model uses the electric charge being allowed to the pigment particles of same color with opposed polarity or keeps electricity
Neutrality, under electric field action, the high-order gray scale and wide colour gamut of realizing color electrophoresis type Electronic Paper are shown.Color pigment particle and black
Colored particle mixing reproduces the dark of different GTGs and dark colour, color pigment particle and white particles mixing reproduce the bright of different GTGs
And light colour, and then full-color EL display is realized by three and above sub-pixel colour mixture, perfection.This kind of color electrophoresis type Electronic Paper
Compared with prior art, having the advantage that can realize that the high-order gray scale color from dark-state to bright state is shown, widen electronics
The spectral range of paper, there is the characteristics of driving principle is simple, technology maturation, and display performance is excellent.Wide gamut and sufficient ash
Grade is spent, is entirely capable of meeting the display image requirement that newspaper, magazine etc. reproduce color high standard.
The technological means that the utility model uses is as follows：
One species diversity electric charge technicolo electrophoretic display device, includes the pel array of multiple repetitions, and pixel includes the first base
Plate, second substrate, three between first substrate and second substrate or more than three sub-pixels and drive device, sub- picture
Plain both sides are provided with sealed spacer wall one, electrophoresis liquid are contained in sub-pixel, electrophoresis liquid includes solvent or solvent mixture, and is dispersed in
Charge polarity in the solvent or the solvent mixture opposite white particles and black particles, and pigment particles, institute
Stating pigment particles includes state of charge for any two kinds in the particle of three kinds of state of charge of positive electricity, negative electricity and electroneutral, i.e.,
Two kinds of state of charge combination of the pigment particles of each sub-pixel be respectively positive and negative, just with it is neutral and negative and neutral.
The color of pigment particles in the pixel at least three sub-pixels be respectively red, green, blue or be respectively it is blue or green,
Pinkish red, yellow, i.e., at least three sub- pixels can show red, green, blue or green grass or young crops, magenta, Huang in each pixel.If selection
Three kinds of combinations of red, green, blue, then the particle color species of corresponding sub-pixel is that red-black white, green black and white and blue-black are white.If selection
Blue or green, pinkish red, yellow three kinds of combinations, then the particle color species of corresponding sub-pixel is blue or green black and white, pinkish red black and white and yellow black and white.
If there are three sub-pixels to show red, green and blue respectively in the pixel, addition colour mixture type is formed, display is white
Color.For sake of convenience, assume that three sub-pixels are the first sub-pixel, the second sub-pixel and the 3rd sub-pixel successively.First son
Pixel can show red, and second sub-pixel can show green, and the 3rd sub-pixel can show blueness.When the first sub- picture
Red other two sub-pixels of element display show black, then the pixel is red.Green other two when the display of the second sub-pixel
Sub-pixel shows black, then the pixel is green.When the 3rd sub-pixel display blueness, other two sub-pixels show black,
Then the pixel is blueness.If it is foregoing display black two sub-pixels all show white, can present the red, green of different gray scales and
It is blue；If two sub-pixels of display black show that one black one is white, the colour of different gray scales can also be presented.It can thus be seen that
Difference charge type electrophoretype color electric paper has abundant tonal gradation.The situation of more than three sub-pixels, can be above-mentioned
On the basis of, sub-pixel of the addition with other pigment particles, meet that the image of higher tonal gradation shows needs.
The white particles are held with the charge polarity identical particle charging in the pigment particles with the white particles
Amount is different；The black particles and the charge polarity identical particle charging capacity in the pigment particles with the black particles
It is different.Setting black particles are negatively charged, then white particles are positively charged, and corresponding with black particles is negatively charged pigment
Particle, corresponding with white particles is positively charged pigment particles.It is black because of negative electrical charge in the presence of extra electric field is set
The quantity of electric charge of colored particle and electronegative pigment particles is different, and black and white particle and pigment particles can be in solvent or solvent mixtures
Separated in slight distance.Similarly positively charged white particle can also separate with positively charged pigment particles.Ensure defined
Under electric field action, black, white, pigment particles energy is independently or mixing is moved to display surface, can show black, white, black particles and pigment
The secondary colour of particle, the secondary colour of white particles and pigment particles, pigment particles color in a certain color.When using electric
Neutral pigment particles are the pigment particles that the quantity of electric charge is 0, instead of above-mentioned positive charge or the pigment particles of negative electrical charge, same energy
Enough secondary colours realized with white particle or black particles.
Pigment particles mobility and its electrically charged amount of institute are interrelated when background of the present utility model and colored display
's.Background being set as white, colour display is set as red, it is assumed that white particles are positively charged, then when showing white background, band
It is red that positive charge or the red pigment particle of electroneutral are moved to display surface display.If setting background as black, colour display
It is set as red, it is assumed that black particles are negatively charged, then when showing black background, negatively charged or electroneutral red pigment grain
It is red that son is moved to display surface display.It similarly can be inferred that the Bu Tong electric of display green, blueness, cyan, magenta and yellow
The situation of movement of the pigment particles of lotus state.The black particles or white particles of display background have in corresponding charge polarity or electricity
The coloured particles of property, i.e. to positive charge, negative electrical charge does not correspond to the situation of electric charge, then corresponds to electroneutral positive charge to negative electrical charge.
This charge characteristic of various particles, be advantageous to improve the stability of pigment particles, show clearly profile.It is particularly black, white
Colored particle and the color rendering situation of pigment particles mixing, realize that multistage stabilization state gray scale is shown.
The color of the pigment particles in each sub-pixel is identical and has same or analogous colour vision, the face
Expect that the color perception difference of the particle of different state of charge in particle is less than resolution ratio of the human eye to the color.To ensure the continuous of gray scale
It is adjustable, there are the pigment particles of different state of charge, it is necessary to assure same or analogous colour vision in each sub-pixel.Do not sharing the same light
Region is composed, human eye is different to the susceptibility of color-aware, and the particularly wave band in addition colour mixture system and subtractive colour mixture system, colour vision is poor
Different difference, when particle colours, it is necessary to rigorous concentration, met.
The pigment particles included in each sub-pixel in the pixel have different optical characteristics respectively.Showing
In, show different base colors or there are the primary colours of gray scale, the pigment particles purity requirement in each pixel must is fulfilled for designing colour vision
The requirement of difference.In the fabrication process, the pigment particles in each process must reduce sub-pixel are mixed into, and realize the aobvious of high-quality
Show.
The drive device includes public electrode and multigroup with each independent corresponding driver element of the sub-pixel, described
Driver element includes thin film transistor (TFT) and driving electrodes, and the public electrode and the driver element are located at the two of sub-pixel respectively
End.The thin film transistor (TFT) species is various, and conventional has OTFT, a-Si type TFT, LTPS type TFT, IGZO type TFT etc..The drive
Moving electrode is the TCF or nontransparent conductive films that transparent or opaque material is formed, and organic material or inorganic material are made.Often
The driver element of individual sub-pixel is connected with corresponding source electrode line and gate electrode line respectively, simultaneous with necessary storage
Electric capacity.Driver element forms array, realizes that the Electronic Paper image of different resolutions is shown as needed.In each sub-pixel
Black, white particle, pigment particles move under independent control, with other sub-pixel colour mixtures, could realize full-color EL display.
At least one sealed spacer wall two is additionally provided with the sub-pixel, forms several separate spaces.
Two kinds of particles in the pigment particles in each sub-pixel are except color vision characteristics are identical, state of charge is different
Outside, other characteristics are identical or different.The charge characteristic difference of pigment particles, realize pigment particles and black track producing particle or white particle
Colour mixture, effectively expand colour gamut.
In two kinds of particles in the pigment particles in each sub-pixel, it is ensured that the particle of minimum number, aobvious
The optical characteristics of full, scattering and reflection can be reached during color.That is, on this basis, even if increase pigment particles number, scattering
Also do not increase with reflective light intensity.In chromatic spectrum area, by the blend of colors of the high-order gray scale of sub-pixel, can realize well complete
Colour display, the coloured image of wider colour gamut can be shown.
The shape of each sub-pixel is identical or different, area equation or.
To any sub-pixel apply electric field, by adjusting polarity, size, pulsewidth and the frequency of electric field, can show it is black,
It is in vain or red or green or blue；It can also show black, white or blue or green or pinkish red or yellow；Change the characteristic of electric field, sub-pixel can be with
Continuously display the black particles and pigment particles secondary colour of different proportion, white particles and pigment particles secondary colour.
Compared with prior art, the beneficial effect of species diversity electric charge technicolo electrophoretic display device provided by the utility model
Fruit is as follows：
Using same color there are the pigment particles of difference state of charge to be closed in single sub-pixel, pass through pigment particles
Respectively with black, white particles colour mixture, the tonal gradation that color is shown effectively is widened.Three with high-order gray scale or more than three
The blend of colors of sub-pixel, full-color EL display can be realized.All there is clearly edge between sub-pixel simultaneously, improve color rendering
Stability.The pigment particles of this species diversity state of charge compared with the prior art, also with display image clearly and stable spy
Point.Realize that high-order gray scale and full-color EL display performance provide effective principle and structural support for Electronic Paper.Expect technicolo
Sub- paper obtains widely application.
The utility model can be widely popularized in fields such as electronic paper technologies for the foregoing reasons.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is done simply to introduce in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 be specific embodiment of the present utility model in a species diversity electric charge technicolo electrophoretic display device pixel and
Three sub-pixel structure schematic diagrames.
Fig. 2 is that a species diversity electric charge technicolo electrophoretic display device is not powered on field in specific embodiment of the present utility model
When inside each particle distribution schematic diagram.
When Fig. 3 is a species diversity electric charge technicolo electrophoretic display device added electric field in specific embodiment of the present utility model
Internal each particle distribution schematic diagram.
In figure；1:Pixel；2:First sub-pixel；3:Second sub-pixel；4:3rd sub-pixel；5：First substrate；6：It is public
Electrode；7：Sealed spacer wall；8：A-Si types TFT；9：Driving electrodes；10：Second substrate；11：Positively charged white particles；12：
Negatively charged black particles；13：Positively charged pigment particles；14：Negatively charged pigment particles；15：Negatively charged red pigment
Particle；16：Positively charged red pigment particle；17：Negatively charged viridine green particle；18：Positively charged viridine green particle；
19：Negatively charged blue pigment particle；20：Positively charged blue pigment particle；
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
As shown in Figure 1-Figure 3,
Difference electric charge technicolo electrophoretic display device of the present utility model includes the pel array of multiple repetitions, any pixel
1 by three or more than three sub-pixel groups into.For ease of explanation, as shown in figure 1, only providing comprising three parallel sub-pixels
Dot structure embodiment, and three sub-pixels are referred to as the first sub-pixel 2, the second sub-pixel 3 and the 3rd sub-pixel 4.Such as
Shown in Fig. 2, the first sub-pixel 2, the second sub-pixel 3 and the 3rd sub-pixel 4 pass through sealed spacer wall 7 between two substrates
Seal electrophoresis liquid to form, for sake of convenience, it is assumed that first substrate 5 is located at observation side, and second substrate 10 is located at the phase of first substrate 5
Offside.The materials'use PET film of first substrate 5, the materials'use glass of second substrate 10.In the inner side of first substrate 5 and aobvious
Between showing the whole top of layer (the first sub-pixel 2, the second sub-pixel 3 and the 3rd sub-pixel 4), it is attached in first substrate 5
The transparency electrode of side, referred to as public electrode 6.The public electrode 6 is usually that ITO electrode or graphene, PEDOT etc. have
Machine material.The inner side of second substrate 10 forms sub-pixel including a-Si types TFT8 together with the driving electrodes 9 of ITO, Al composite bed
Driver element.Each driver element passes through source electrode Al leads, gate electrode Al leads connection composition array.Each sub-pixel tool
There is suitable storage capacitance, the connection of necessary via and necessary insulator separation are provided with as needed between some electrodes.By
In belonging to content known in the art, the understanding to the present embodiment is not influenceed, does not describe these structures one by one in fig. 2.
Although providing specific title material, type and mode for substrate, thin film transistor (TFT), the scope of the utility model covers
Other types of baseplate material and addressing system, as long as these modes are used for the technicolo electrophoretic display device of difference electric charge.
Each sub-pixel of each pixel is made up of different electrophoresis liquids, and electrophoresis liquid includes solvent or solvent mixture and divided
Dissipate has two in the opposite black particles of charge polarity therein, white particles and a kind of pigment particles of color, pigment particles
The different state of charge of kind.Solvent or solvent mixture are transparency liquids, to make figure concise, the species of prominent particle and
Charge type, these transparency liquids are omitted in Fig. 2.Various particles in figure are in the random distribution shape for being not powered on field action
State.
In the present embodiment, the pigment particles in three sub-pixels, there are identical color vision characteristics, respectively using face of the same race
Material strip has different positive charge and negative electrical charge.In the present embodiment, white particles are by Ti02Formed；Black particles are by carbon black
Formed；The pigment particles color of each sub-pixel is red, green, blue respectively, as shown in Figure 3.Same Fig. 2, it also omit solvent or molten
Agent composition.On different sub-pixels, apply electric field respectively and form pigment particles state, the first sub-pixel and the second sub-pixel
Black is shown, the 3rd sub-pixel shows blue color, whole pixel display blueness.Change the electric field status of sub-pixel, pixel can be with
Show the colors such as black, white, red, green.
In Fig. 2 and Fig. 3, the species and charge type of particle are：Positively charged white particles 11；Negatively charged black particles
12；Positively charged pigment particles 13；Negatively charged pigment particles 14；Negatively charged red pigment particle 15；Positively charged red
Pigment particles 16；Negatively charged viridine green particle 17；Positively charged viridine green particle 18；Negatively charged blue pigment particle
19；Positively charged blue pigment particle 20.
The scope of the utility model widely covers to be changed including the variously-shaped arrangement of sub-pixel and sub-pixel quantity, pigment
The quantity and volume of particle, the color of pigment particles, pigment particles and black particles, the charge characteristic and the quantity of electric charge of white particles
Difference, the electrophoresis liquid volume of any composition, type of solvent change, as long as the pigment particles in same color have different electric charges
State is identical with the utility model essence.Here state of charge difference refers to positive charge and negative electrical charge or positive charge and electricity
Lotus neutrality or negative electrical charge and neutral charge.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, either to which part or all technical characteristic
Carry out equivalent substitution；For example only convert the color of pigment particles and the species or quantity of pigment particles, the shape of spaced walls, substrate
Type, the composition of drive device, and the mode that the utility model is easily realized.For other pigment particles type Electronic Papers
Pattern, such as vacuum powder fluid isotype are applied equally to the utility model.It is all it is of the present utility model change and change it
It is interior, all any modification, equivalent and improvement done etc., it should be included within the scope of protection of the utility model.
Claims (8)
- A 1. species diversity electric charge technicolo electrophoretic display device, it is characterised in that include the pel array of multiple repetitions, pixel bag Include first substrate, second substrate, three between first substrate and second substrate or more than three sub-pixels and driving Device, sub-pixel both sides are provided with sealed spacer wall one, electrophoresis liquid are contained in sub-pixel, electrophoresis liquid includes solvent or solvent mixes Thing, and the white particles and black particles that the charge polarity that is dispersed in the solvent or the solvent mixture is opposite, and Pigment particles, the pigment particles are included in particle of the state of charge for three kinds of state of charge of positive electricity, negative electricity and electroneutral Any two kinds.
- 2. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：In the pixel The color of pigment particles at least three sub-pixels is respectively red, green, blue or is respectively blue or green, pinkish red, yellow.
- 3. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：The leucoplastid It is sub different with the charge polarity identical particle charging capacity of the white particles from the pigment particles；The black particles It is different with the charge polarity identical particle charging capacity of the black particles from the pigment particles.
- 4. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：Each son The color of the pigment particles in pixel is identical and has identical colour vision, the grain of different state of charge in the pigment particles The color perception difference of son is less than resolution ratio of the human eye to the color.
- 5. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：The driving dress Put including public electrode and multigroup independent corresponding driver element with each sub-pixel, it is brilliant that the driver element includes film Body pipe and driving electrodes, the public electrode and the driver element are located at the both ends of sub-pixel respectively.
- 6. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：The sub-pixel Inside it is additionally provided with least one sealed spacer wall two.
- 7. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：Each son Two kinds of particle color vision characteristics in the pigment particles in pixel are identical, state of charge is different.
- 8. species diversity electric charge technicolo electrophoretic display device according to claim 1, it is characterised in that：Each son The shape of pixel is identical or different, area equation or.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720477549.9U CN206877015U (en) | 2017-04-28 | 2017-04-28 | One species diversity electric charge technicolo electrophoretic display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720477549.9U CN206877015U (en) | 2017-04-28 | 2017-04-28 | One species diversity electric charge technicolo electrophoretic display device |
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| Publication Number | Publication Date |
|---|---|
| CN206877015U true CN206877015U (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720477549.9U Withdrawn - After Issue CN206877015U (en) | 2017-04-28 | 2017-04-28 | One species diversity electric charge technicolo electrophoretic display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206877015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065375A (en) * | 2017-04-28 | 2017-08-18 | 大连龙宁科技有限公司 | One species diversity electric charge technicolo electrophoretic display device |
-
2017
- 2017-04-28 CN CN201720477549.9U patent/CN206877015U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065375A (en) * | 2017-04-28 | 2017-08-18 | 大连龙宁科技有限公司 | One species diversity electric charge technicolo electrophoretic display device |
| CN107065375B (en) * | 2017-04-28 | 2024-03-12 | 大连龙宁科技有限公司 | Differential charge color electrophoresis type display device |
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