JPH01137240A - Electrophoretic display device - Google Patents
Electrophoretic display deviceInfo
- Publication number
- JPH01137240A JPH01137240A JP62296379A JP29637987A JPH01137240A JP H01137240 A JPH01137240 A JP H01137240A JP 62296379 A JP62296379 A JP 62296379A JP 29637987 A JP29637987 A JP 29637987A JP H01137240 A JPH01137240 A JP H01137240A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- display
- electrode
- electrophoretic
- display device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 239000002612 dispersion medium Substances 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WDQKZBREBQPKPU-UHFFFAOYSA-N 1,1-difluoroethane tetrahydrochloride Chemical compound CC(F)F.Cl.Cl.Cl.Cl WDQKZBREBQPKPU-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
く本発明の目的〉
［産業上の利用分野］
本発明は、電気泳動を利用した電気泳動表示装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrophoretic display device that utilizes electrophoresis.
［従来の技術］
電気泳動表示装置としては、インクのように着色された
液体の分散媒と、電気泳動粒子が分散媒中に分散されて
分散系を形成している。電気泳動表示装置は、この分散
系を挾んで両側に電極を設け、表示の変更を行う際に電
圧を印加して電気泳動粒子を表示側の電極に引き寄せて
表示の変更を行うものである。これらは必要に応じ組み
合わせて利用するものである。[Prior Art] In an electrophoretic display device, a colored liquid dispersion medium such as ink and electrophoretic particles are dispersed in the dispersion medium to form a dispersion system. In an electrophoretic display device, electrodes are provided on both sides of the dispersion system, and when changing the display, a voltage is applied to draw the electrophoretic particles to the electrodes on the display side, thereby changing the display. These can be used in combination as necessary.
［発明が解決しようとする問題点］
従来の電気泳動表示装置は、電気泳動粒子が両電極に引
き付けられて動作する表示装置であり、コントラストを
付けるため両電極を十分離していて、２色の表示しか出
来ず中間階調を表示することが不可能なものとなってい
た。[Problems to be Solved by the Invention] Conventional electrophoretic display devices operate by attracting electrophoretic particles to both electrodes, and in order to provide contrast, the two electrodes are spaced sufficiently apart, and two colors are It has become impossible to display intermediate gradations.
ｒ本発明の目的１
本発明は、中間階調の表示を可能にした電気泳動表示装
置を提供することを目的とする。rObjective 1 of the present invention An object of the present invention is to provide an electrophoretic display device capable of displaying intermediate gradations.
≦本発明の構成〉
Ｅ問題を解決する手段】
分散媒と電気泳動粒子を有する分散系を両電極で挟み電
圧を印加して得られる電気泳動表示装置において、中間
階調を持たせるために表示側の電極近傍に中間電極を設
けた構成の電気泳動表示装置である。≦Structure of the present invention〉 Means for solving problem E] In an electrophoretic display device obtained by sandwiching a dispersion system having a dispersion medium and electrophoretic particles between two electrodes and applying a voltage, in order to provide a display with an intermediate gradation, This is an electrophoretic display device having a configuration in which an intermediate electrode is provided near the side electrodes.
［作用及び実施例］
第１図は、電気泳動表示装置１００の断面図を示すもの
である。[Operations and Examples] FIG. 1 shows a cross-sectional view of an electrophoretic display device 100.
電気泳動表示装置１００は、基板１３．１３’とスペー
サー１５．１５’や仕切り板１７により各セグメントに
分割されている。各セグメントには、インクや塗料等で
着色した四塩化二フッ化エタン系等の分散媒１１と酸化
チタン等の電気泳動粒子１２が内在させである。そして
、電気泳動粒子１２が分散媒１１に分散されて分散系１
０を形成している。電極１４．１４′は、この分散系１
０を挟んで設けられている。なお、第１図の電極の極性
は、一つの状態を示すものであって、この場合は、斜線
部分がプラスで黒くつぶした部分がマイナスとなる。The electrophoretic display device 100 is divided into segments by substrates 13, 13', spacers 15, 15', and partition plates 17. Each segment contains a dispersion medium 11 such as tetrachloride difluoroethane colored with ink or paint, and electrophoretic particles 12 such as titanium oxide. Then, the electrophoretic particles 12 are dispersed in the dispersion medium 11 and the dispersion system 1
0 is formed. Electrodes 14.14' are connected to this dispersion 1
They are provided with 0 in between. Note that the polarity of the electrode in FIG. 1 indicates one state, and in this case, the shaded part is positive and the blacked out part is negative.
本発明は、電極１４．１４’の間にあって表示側の電極
１４近傍に中間電極１６を設けたものである。すなわち
、第１図の１番上のセグメントでは、表示の変更を行う
等の際に、電極１４．１１１’間に電圧を印加して電気
泳動粒子１２を表示側の電極１４に引き寄せるものであ
った。本発明は、２番目のセグメントで示すように、中
間電極１６に電圧を印加して電気泳動粒子１２を引き寄
せたものである。このようにすることにより、表示とし
ては、１番目のセグメントのように表示側の電極１４に
電気泳動粒子１２を引き寄せた場合には、表示は明確と
なる。一方、２番目のセグメントでは、１番目のものに
比べて若干河い表示をさせることが出来る。すなわち、
電気泳動粒子１２か表示側の電極１４の近傍の中間電極
１６に引き寄せられているために、淡く表示がされる。In the present invention, an intermediate electrode 16 is provided between the electrodes 14 and 14' and near the electrode 14 on the display side. That is, in the top segment of FIG. 1, when changing the display, a voltage is applied between the electrodes 14 and 111' to draw the electrophoretic particles 12 toward the electrode 14 on the display side. Ta. The present invention applies a voltage to the intermediate electrode 16 to attract the electrophoretic particles 12, as shown in the second segment. By doing so, the display becomes clear when the electrophoretic particles 12 are attracted to the electrode 14 on the display side as in the first segment. On the other hand, the second segment can be displayed slightly wider than the first segment. That is,
Since the electrophoretic particles 12 are attracted to the intermediate electrode 16 near the electrode 14 on the display side, the display appears faint.
これらのセグメントを組み合わせることにより、従来の
表示は２色であったが、中間ｒ皆調の表示をさせること
が出来て、表示装置としてより多彩なものとなった。な
お、中間階調の濃淡は中間電極１６と表示側の電極１４
との間隔を調整することにより容易に調整することが出
来る。By combining these segments, the conventional display was in two colors, but it is now possible to display in intermediate tones, making the display device more versatile. Note that the density of the intermediate gradation is determined by the intermediate electrode 16 and the electrode 14 on the display side.
This can be easily adjusted by adjusting the distance between the
また、中間電極１６は、ポリイミドの膜材に金属膜等の
電極が付けられている。そして、中間電極１６は格子状
に設けて分散系１０が左右に自由に動けるようにしであ
る。Further, the intermediate electrode 16 is formed by attaching an electrode such as a metal film to a polyimide film material. The intermediate electrodes 16 are arranged in a grid pattern so that the dispersion system 10 can move freely left and right.
なお、表示の妨げにならないようにする必要から基板１
３は透明なガラスやプラスチック等を用い、また電極１
４も透明なＳｎＯ□等を用いである。In addition, because it is necessary not to interfere with the display, the board 1
3 uses transparent glass or plastic, and electrode 1
4 also uses transparent SnO□ or the like.
しかし、中間電極１６は、必ずしも透明にする必要がな
いが、透明にするならば５ｎＯｚやＩｎｚＯ３等の材料
が挙げられる。However, the intermediate electrode 16 does not necessarily need to be transparent, but if it is made transparent, materials such as 5nOz and InzO3 can be used.
く本発明の効果〉
本発明は、分散系を挾んだ画電極のなかにあって、表示
側の電極近傍に中間電極を設けて階調を可能としたもの
であって、これにより中間階調の表示を可能なものとし
て、表示をより多彩なものとすることが出来た。よって
、表示装置をより広範囲に利用することが出来るように
なった。Effects of the Present Invention The present invention enables gradation by providing an intermediate electrode near the electrode on the display side among the picture electrodes sandwiching the dispersion system. By making it possible to display the key, it was possible to make the display more versatile. Therefore, display devices can now be used more widely.
第１図は、本発明の電気泳動表示装置の断面図である。 ｌＯ・・・・・・分散系 ＩＩ・・・・・・分散媒 １２・・・・・・電気泳動粒子 １３．１３’・・・・・・基板 １４．１４’・・・・・・電極 １６・・・・・・中間電極 １００・・・・・・電気泳動表示装置 特許出願人 キンセキ株式会社 FIG. 1 is a sectional view of an electrophoretic display device of the present invention. lO・・・Distributed system II...Dispersion medium 12... Electrophoretic particles 13.13’・・・Board 14.14’・・・Electrode 16... Intermediate electrode 100... Electrophoretic display device Patent applicant Kinseki Co., Ltd.
Claims (2)
挟み電圧を印加して得られる電気泳動表示装置において
、表示側の電極近傍に中間階調を持たせるための中間電
極を設けたことを特徴とする電気泳動表示装置。(1) In an electrophoretic display device obtained by sandwiching a dispersion system containing a dispersion medium and electrophoretic particles between two electrodes and applying a voltage, an intermediate electrode is provided near the electrode on the display side to provide an intermediate gradation. An electrophoretic display device characterized by:
であることを特徴とする特許請求の範囲第１項記載の電
気泳動表示装置。(2) The electrophoretic display device according to claim 1, wherein the intermediate electrode has a grid shape through which electrophoretic particles can pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62296379A JPH01137240A (en) | 1987-11-25 | 1987-11-25 | Electrophoretic display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62296379A JPH01137240A (en) | 1987-11-25 | 1987-11-25 | Electrophoretic display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01137240A true JPH01137240A (en) | 1989-05-30 |
Family
ID=17832787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62296379A Pending JPH01137240A (en) | 1987-11-25 | 1987-11-25 | Electrophoretic display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01137240A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0600878A1 (en) * | 1991-08-29 | 1994-06-15 | Copytele Inc | Electrophoretic display panel with internal mesh background screen. |
| JP2002006345A (en) * | 2000-04-19 | 2002-01-09 | Fuji Xerox Co Ltd | Image display medium and image display device |
| WO2002086612A1 (en) * | 2001-04-25 | 2002-10-31 | Koninklijke Philips Electronics N.V. | Electrophoretic color display device |
| WO2003019279A1 (en) * | 2001-08-23 | 2003-03-06 | Koninklijke Philips Electronics N.V. | Electrophoretic display device |
| WO2003071348A1 (en) * | 2002-02-19 | 2003-08-28 | Koninklijke Philips Electronics N.V. | Electrophoretic display device |
| JP2005249908A (en) * | 2004-03-02 | 2005-09-15 | Casio Comput Co Ltd | Display apparatus and its manufacturing method |
| CN100346222C (en) * | 1999-01-29 | 2007-10-31 | 精工爱普生株式会社 | Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer |
| US7463407B2 (en) | 2002-06-13 | 2008-12-09 | Koninklijke Philips Electronics N.V. | Electro-optically active device |
| WO2009034715A1 (en) * | 2007-09-12 | 2009-03-19 | Isao Ota | Particle movement type display device and its manufacturing method |
-
1987
- 1987-11-25 JP JP62296379A patent/JPH01137240A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0600878A4 (en) * | 1991-08-29 | 1994-09-07 | Copytele Inc | Electrophoretic display panel with internal mesh background screen. |
| EP0600878A1 (en) * | 1991-08-29 | 1994-06-15 | Copytele Inc | Electrophoretic display panel with internal mesh background screen. |
| CN100346222C (en) * | 1999-01-29 | 2007-10-31 | 精工爱普生株式会社 | Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer |
| JP2002006345A (en) * | 2000-04-19 | 2002-01-09 | Fuji Xerox Co Ltd | Image display medium and image display device |
| WO2002086612A1 (en) * | 2001-04-25 | 2002-10-31 | Koninklijke Philips Electronics N.V. | Electrophoretic color display device |
| WO2003019279A1 (en) * | 2001-08-23 | 2003-03-06 | Koninklijke Philips Electronics N.V. | Electrophoretic display device |
| CN1307480C (en) * | 2001-08-23 | 2007-03-28 | 皇家飞利浦电子股份有限公司 | Electrophoretic display device |
| WO2003071348A1 (en) * | 2002-02-19 | 2003-08-28 | Koninklijke Philips Electronics N.V. | Electrophoretic display device |
| US7463407B2 (en) | 2002-06-13 | 2008-12-09 | Koninklijke Philips Electronics N.V. | Electro-optically active device |
| US7609436B2 (en) | 2002-06-13 | 2009-10-27 | Koninklijke Philips Electronics N.V. | Electro-optically active device |
| JP2005249908A (en) * | 2004-03-02 | 2005-09-15 | Casio Comput Co Ltd | Display apparatus and its manufacturing method |
| JP4625976B2 (en) * | 2004-03-02 | 2011-02-02 | カシオ計算機株式会社 | Display device and manufacturing method thereof |
| WO2009034715A1 (en) * | 2007-09-12 | 2009-03-19 | Isao Ota | Particle movement type display device and its manufacturing method |
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