CN100412677C - Preparation of microcheck method electrophoresis display - Google Patents
Preparation of microcheck method electrophoresis display Download PDFInfo
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- CN100412677C CN100412677C CNB2006100143068A CN200610014306A CN100412677C CN 100412677 C CN100412677 C CN 100412677C CN B2006100143068 A CNB2006100143068 A CN B2006100143068A CN 200610014306 A CN200610014306 A CN 200610014306A CN 100412677 C CN100412677 C CN 100412677C
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Abstract
The present invention discloses a preparation method for a micro-lattice method electrophoresis display, which belongs to the technical field of electrophoresis display. The method comprises the following procedures: the preparation of micro-lattice adopts the way that a conduction base plate is coated with high moleculars, micro-lattice matrices which are in regular shape and are regularly arranged are obtained through photolithography operation or moulding operation or laser hole scalding operation, and the side walls are provided with micro-flute to realize local communication of the micro-lattice; electrophoresis liquid containing yellow electrophoresis particles and blue dyes are uniformly sprayed into the micro-lattice; the micro-lattice are sealed and packed in a way that chloroformic solution of polyvinylpyrrolidone or etanol solution of polyvinyl alcohol are taken as adhesives to glue the transparent conduction base plate and the micro-lattice filled with the electrophoresis liquid. Thus, the micro-lattice method electrophoresis display is obtained. The present invention has the advantage of simple preparation processing and simple because the micro-lattice are easy to make, and the micro-lattice matrices which realize local communication of the micro-lattice through micro-flute cause the electrophoresis liquid to be easy to fill. The sectional type package decreases the package difficulty.
Description
Technical field
The present invention relates to a kind of preparation method of microcheck method electrophoresis display, belong to the field of electrophoretic display technology.
Background technology
Electrophoretic display technology is to utilize the principle of electrophoresis that the coloured electrophoretic particle that is clipped between transparency electrode is moved under effect of electric field, shows the color different with background, and can alternating movement when changing direction of an electric field.Because electrophoretic display device (EPD) has good contrast, visible angle and greatly, do not need background light source, can also use flexible electrode instead and be processed into flexible display like this, so by being called of image " Electronic Paper (e-paper) " or " electric ink (e-ink) ".In the preparation process of electrophoretic display device (EPD), extremely important principle is exactly electrophoresis liquid to be separated in micro unit independently with certain inert media, so just can overcome large tracts of land reunion and image attenuation that the electrophoretic particle lateral transfer causes.Existing electrophoretic display device (EPD) mainly contains microcapsules electrophoretic display device (EPD) [the Barrett Comiskey of E INK company, J.D.Albert, Hidekazu Yoshizawa, et al.Anelectrophoretic ink for all-printed reflective electronic display, Nature, 1998,394,253～255] and little glass of type electrophoretic display device (EPD) [Liang Rong-Chang, Chan-Park, Mary of SIPIX company, Tseng Scott C-J, WuZarng-Arh George, Zang Hong-Mei.Electrophoretic Display[P] .WO 0167170A1,2001].The microcapsules electrophoretic display device (EPD) is that electrophoresis liquid is encapsulated in the microcapsules of particle diameter 50～150 μ m, carries out single coating preparation on transparent electrode plate.This electrophoretic display device (EPD) bad mechanical property, to environment sensitive, microcapsules are required high complex manufacturing technology.Little glass of type electrophoretic display device (EPD) be with electrophoresis liquid with the special device can and be sealed in the prefabricated miniature cup and obtain, but a system cup technical difficulty, can encapsulation technology complexity.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of microcheck method electrophoresis display, this method adopts photoetch method, compression moulding or laser to scald the get everything ready little lattice of display unit of limited microchannel of hole legal system, it is big to have solved single little lattice surface tension, the problem of can difficulty, and, reduce encapsulation difficulty with specific bonding agent employing sectional type encapsulation.
The present invention is realized by following technical proposals.A kind of preparation method of microcheck method electrophoresis display is characterized in that comprising following process:
1. the preparation of little lattice matrix: apply one deck radiation curing material on the substrate of conductive film again being coated with, described radiation curing material is the positive photoresist methyl methacrylate, or the KTFR of negative photoresist Kodak (Kodak film resist), by photomask it is carried out photocuring, then unexposed portion is washed off, obtained little lattice matrix.Also can pass through the moulding of polymkeric substance mold hot setting, as nylon, terylene, polyacrylate.Little lattice can be square, regular hexagon or circle.The wide of little lattice is 30～200 μ m, and dark 10～50 μ m, little lattice wall thickness are 5～30 μ m, and little lattice base thickness is 0.5～5 μ m.Realize being communicated with by the microflute passage of wide 2～10 μ m on its sidewall between per 3～10 little lattice.
2. electrophoresis liquid can: will contain massfraction and be 0.1～1% electrophoretic particle hansa yellow, 0.02～0.1% charge control agent sorbester p17 or didecyl alkyl dimethyl ammonium bromide or calcium dodecyl benzene sulfonate or OP-10,0.1～1% dyestuff solvent blue and all the other electrophoresis liquid for the zellon of dispersion medium, evenly be sprayed on little lattice, until electrophoresis liquid little lattice are filled up, stand-by.
3. the encapsulation of little lattice: will be not with the oil binder of electrophoresis liquid phase effect be that the chloroformic solution of 5～50% polyvinylpyrrolidone or the ethanolic solution of polyvinyl alcohol (PVA) evenly are coated on the transparent conductive substrate, coating thickness 1～10 μ m, in air, place 10～100S, rapidly with its with 2 in little lattice of canned electrophoresis liquid bonding, with about the edge part epoxy sealing of two battery lead plate combinations.
The invention has the advantages that preparation process is simple.The preparation of little lattice is adopted photoetch method, compression moulding or laser to scald the hole method and is easy to realize.Little lattice of preparation have limited little logical, promptly open microflute at little lattice sidewall, and several little lattice are linked, thereby it is big to have solved single little lattice surface tension, problem that can't smoothly can electrophoresis liquid has avoided little agar diffusion method in the prior art to need the difficult problem of special filling apparatus, has simplified preparation technology.Owing to adopt the micro format structure, can overcome the complicated preparation technology of microcapsule method, and improve effective display area.The encapsulation of employing sectional type reduces encapsulation difficulty.
Description of drawings
Fig. 1 is the prepared little lattice matrix synoptic diagram on battery lead plate of the present invention.
Fig. 2 is the partial enlarged drawing of A among Fig. 1, i.e. the enlarged diagram of a little lattice structure.
Fig. 3 is the cross-sectional structure synoptic diagram of the prepared little lattice electrophoretic display device (EPD) of the present invention.
Among the figure: the 1st, battery lead plate, the 2nd, conductive coating, the 3rd, adhesive phase, the 4th, little lattice, the 5th, electrophoresis liquid, the 6th, electrophoretic particle.X represents that the little lattice of electrophoresis showed are in not added electric field state; Y represents that the little lattice of electrophoresis showed are in the state that the bottom applies negative electrostatic field, and Z represents that the little lattice of electrophoresis showed are in the state that the bottom applies positive electrostatic field.
Embodiment
Example 1
The thick methyl methacrylate of spin coating one deck 40 μ m on the electrically conducting transparent polycarbonate film of 10 * 15cm, adopts more than the 220nm ultraviolet photoetching 10min exposure metering 250mJ/cm by mask
2Obtain the little lattice matrix of regular hexagon, the length of side 80 μ m, dark 20 μ m, wall thickness 10 μ m, microflute channel width 8 μ m on little lattice sidewall, little lattice base thickness is 0.5 μ m, per 4 little lattice are by microflute channel connection on its sidewall.Horizontal totally 590 little lattice, vertical 882 little lattice.
Get the 20mL zellon, to wherein adding the 0.1g Hansa yellow 100,0.05g solvent blue 35, the sorbester p17 that adds 0.01g, the didecyl alkyl dimethyl ammonium bromide of 0.01g adds the 10g beaded glass, 300rpm ground 4 hours down, removed by filter beaded glass then, got the yellow electrophoretic liquid of stable dispersion.
Get the 5mL electrophoresis liquid, evenly be sprayed on little lattice, to flooding little lattice top.With the chloroformic solution of 35% polyvinylpyrrolidone, be coated in the stainless steel scraper on the conductive polycarbonate film of another piece 10 * 14.5cm simultaneously, coating thickness 2 μ m place 20S in air, rapidly with itself and can little lattice of electrophoresis liquid bonding, compress.With the edge epoxy sealing of two battery lead plate combinations up and down.
After treating the bonding agent drying, apply the 30V electrostatic field, obtain the electrophoresis showed image of passive driving to bottom electrode.
Example 2
The spin coating one deck 30 μ m KTFR of thick Kodak negative photoresists on the electrically conducting transparent polycarbonate film of 5 * 10cm, by mask, uv-exposure, exposure metering 125mJ/cm
2Obtain the little lattice matrix of square, the length of side 60 μ m, dark 15 μ m, wall thickness 8 μ m, microflute channel width 6 μ m on little lattice sidewall, little lattice base thickness is 1 μ m, per 8 little lattice are by microflute channel connection on its sidewall.Horizontal totally 735 little lattice, vertical 1470 little lattice.
Get the 20mL zellon, to wherein adding the 0.2g Hansa yellow 100,0.1g solvent blue 36, the OP-10 that adds 0.02g, the didecyl alkyl dimethyl ammonium bromide of 0.02g adds the 10g beaded glass, 300rpm ground 6 hours down, removed by filter beaded glass then, got the yellow electrophoretic liquid of stable dispersion.
Get the 4mL electrophoresis liquid, evenly be sprayed on little lattice, to flooding little lattice top.With the ethanolic solution of 30% polyvinyl alcohol (PVA), be coated in the stainless steel scraper on the conductive polycarbonate film of another piece 5 * 9.5cm simultaneously, coating thickness 1 μ m places 10S in air, rapidly with itself and can little lattice of electrophoresis liquid bonding, compress.With the edge epoxy sealing of two battery lead plate combinations up and down.
After treating the bonding agent drying, apply the 10V electrostatic field, obtain the electrophoresis showed image of passive driving to top electrodes.
Example 3
With prefabricated mould casting, solidified forming under the high temperature obtains circular little lattice matrix of 10 * 10cm size with oligomeric terylene, diameter 50 μ m, dark 20 μ m, average wall thickness 10 μ m, microflute channel width 5 μ m on little lattice sidewall, little lattice base thickness 1 μ m, per 3 little lattice are by the microflute channel connection on its sidewall.Horizontal totally 1666 little lattice, vertical 1666 little lattice.Its bottom is coated with the thick acryl resin of 1 μ m to be bonded on the electrically conducting transparent polycarbonate film of 10 * 10cm.
Get the 40mL zellon, to wherein adding the 0.2g Hansa yellow 100,0.1g solvent blue 36, the OP-10 that adds 0.02g, the calcium dodecyl benzene sulfonate of 0.02g adds the 20g beaded glass, 300rpm ground 10 hours down, removed by filter beaded glass then, got the yellow electrophoretic liquid of stable dispersion.
Get the 4mL electrophoresis liquid, evenly be sprayed on little lattice, to flooding little lattice top.With the chloroformic solution of 20% polyvinylpyrrolidone, be coated in the stainless steel scraper on the conductive polycarbonate film of another piece 10 * 9.5cm simultaneously, coating thickness 1 μ m places 20S in air, rapidly with itself and can little lattice of electrophoresis liquid bonding, compress.With the edge epoxy sealing of two battery lead plate combinations up and down.
After treating the bonding agent drying, apply the 20V electrostatic field, obtain the electrophoresis showed image of passive driving to top electrodes.
Claims (3)
1. the preparation method of a microcheck method electrophoresis display is characterized in that comprising following process:
(1) preparation of little lattice matrix: the thick methyl methacrylate of spin coating one deck 40 μ m again on the polycarbonate film of transparent conductive substrate, by photomask it is carried out photocuring, then unexposed portion is washed off, make orthohexagonal little lattice matrix, the wherein little lattice length of side 80 μ m, dark 20 μ m, wall thickness 10 μ m, microflute channel width 8 μ m on little lattice sidewall, little lattice base thickness is 0.5 μ m, per 4 little lattice are by microflute channel connection on its sidewall, horizontal totally 590 little lattice, vertical 882 little lattice;
(2) electrophoresis liquid can: will be by in every 20mL dispersion medium zellon, the Hansa yellow 100 that contains 0.1g, the solvent blue 35 that contains 0.05g, the sorbester p17 and the electrophoresis liquid that contains 0.01g didecyl alkyl dimethyl ammonium bromide that contain 0.01g, evenly be sprayed on little lattice, little lattice filled up until electrophoresis liquid, stand-by;
(3) little lattice encapsulation: will be not with the oil binder of electrophoresis liquid phase effect be that the chloroformic solution of 35% polyvinylpyrrolidone evenly is coated on the polycarbonate film of another piece transparent conductive substrate, coating thickness 2 μ m, in air, place 20S, rapidly that little lattice of canned electrophoresis liquid in this another piece transparent conductive substrate and the step (2) are bonding, with the edge part epoxy sealing of two electrically-conductive backing plate combinations up and down.
2. the preparation method of a microcheck method electrophoresis display is characterized in that comprising following process:
(1) preparation of little lattice matrix: the thick Kodak film resist of spin coating one deck 30 μ m again on the polycarbonate film of transparent conductive substrate, by photomask it is carried out photocuring, then unexposed portion is washed off, make little lattice matrix of square, the wherein little lattice length of side 60 μ m, dark 15 μ m, wall thickness 8 μ m, microflute channel width 6 μ m on little lattice sidewall, little lattice base thickness is 1 μ m, per 8 little lattice are by microflute channel connection on its sidewall, horizontal totally 735 little lattice, vertical 1470 little lattice;
(2) electrophoresis liquid can: will be by in every 20mL dispersion medium zellon, the Hansa yellow 100 that contains 0.2g, the solvent blue 36 that contains 0.1g, the OP-10 and the electrophoresis liquid that contains 0.02g didecyl alkyl dimethyl ammonium bromide that contain 0.02g, evenly be sprayed on little lattice, little lattice filled up until electrophoresis liquid, stand-by;
(3) little lattice encapsulation: will be not with the oil binder of electrophoresis liquid phase effect be that the ethanolic solution of 30% polyvinyl alcohol (PVA) evenly is coated on the polycarbonate film of another piece transparent conductive substrate, coating thickness 1 μ m, in air, place 10S, rapidly that little lattice of canned electrophoresis liquid in this another piece transparent conductive substrate and the step (2) are bonding, with the edge part epoxy sealing of two electrically-conductive backing plate combinations up and down.
3. the preparation method of a microcheck method electrophoresis display is characterized in that comprising following process:
(1) with oligomeric terylene with prefabricated mould casting solidified forming, make circular little lattice matrix, wherein little lattice diameter 50 μ m, dark 20 μ m, average wall thickness 10 μ m, microflute channel width 5 μ m on little lattice sidewall, little lattice base thickness 1 μ m, per 3 little lattice be by the microflute channel connection on its sidewall, laterally totally 1666 little lattice, vertical 1666 little lattice are coated with the thick acryl resin of 1 μ m with the little lattice matrix of circle bottom and are bonded on the polycarbonate film of transparent conductive substrate;
(2) electrophoresis liquid can: will be by in every 40mL dispersion medium zellon, the Hansa yellow 100 that contains 0.2g, the solvent blue 36 that contains 0.1g, the OP-10 and the electrophoresis liquid that contains the 0.02g calcium dodecyl benzene sulfonate that contain 0.02g, evenly be sprayed on little lattice, little lattice filled up until electrophoresis liquid, stand-by;
(3) little lattice encapsulation: will be not with the oil binder of electrophoresis liquid phase effect be the chloroformic solution of 20% polyvinylpyrrolidone, evenly be coated on the polycarbonate film of another piece transparent conductive substrate, coating thickness 1 μ m, in air, place 20S, rapidly that little lattice of canned electrophoresis liquid in this another piece transparent conductive substrate and the step (2) are bonding, with the edge part epoxy sealing of two electrically-conductive backing plate combinations up and down.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7903322B2 (en) | 2009-07-15 | 2011-03-08 | Au Optronics Corporation | Electro-phoretic display film, electro-phoretic display panel, and fabricating method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023451A (en) * | 2009-09-23 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Electronic paper device |
| CN101813866B (en) * | 2010-04-22 | 2012-02-08 | 友达光电股份有限公司 | Electrophoretic display device and manufacture method thereof |
| CN102385213B (en) * | 2010-09-06 | 2016-01-20 | 广州奥熠电子科技有限公司 | A kind of electrophoretic display apparatus and preparation method thereof |
| JP7011157B2 (en) * | 2017-11-24 | 2022-01-26 | Ｔｉａｎｍａ Ｊａｐａｎ株式会社 | Display device manufacturing method and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001067170A1 (en) * | 2000-03-03 | 2001-09-13 | Sipix Imaging, Inc. | Electrophoretic display |
| US6753067B2 (en) * | 2001-04-23 | 2004-06-22 | Sipix Imaging, Inc. | Microcup compositions having improved flexure resistance and release properties |
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- 2006-06-12 CN CNB2006100143068A patent/CN100412677C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001067170A1 (en) * | 2000-03-03 | 2001-09-13 | Sipix Imaging, Inc. | Electrophoretic display |
| US6753067B2 (en) * | 2001-04-23 | 2004-06-22 | Sipix Imaging, Inc. | Microcup compositions having improved flexure resistance and release properties |
Non-Patent Citations (6)
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| 微杯型电泳显示器的研究进展. 谢建宇，冯亚青，李祥高，王静，孟舒献.功能材料，第36卷第9期. 2005 * |
| 微胶囊电泳显示技术. 王静，冯亚青，李祥高，孟舒献，谢建宇，李刚.化学通报，第6期. 2005 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7903322B2 (en) | 2009-07-15 | 2011-03-08 | Au Optronics Corporation | Electro-phoretic display film, electro-phoretic display panel, and fabricating method thereof |
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