JPH01114828A - Electrophoresis display device - Google Patents
Electrophoresis display deviceInfo
- Publication number
- JPH01114828A JPH01114828A JP62272777A JP27277787A JPH01114828A JP H01114828 A JPH01114828 A JP H01114828A JP 62272777 A JP62272777 A JP 62272777A JP 27277787 A JP27277787 A JP 27277787A JP H01114828 A JPH01114828 A JP H01114828A
- Authority
- JP
- Japan
- Prior art keywords
- dispersion system
- spacer
- disperse system
- electrodes
- porous spacer
- 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
- 238000001962 electrophoresis Methods 0.000 title abstract 2
- 125000006850 spacer group Chemical group 0.000 claims abstract description 42
- 239000002245 particle Substances 0.000 claims abstract description 22
- 239000002612 dispersion medium Substances 0.000 claims abstract description 14
- 239000006185 dispersion Substances 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 230000009969 flowable effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000002522 swelling effect Effects 0.000 claims description 2
- 230000008961 swelling Effects 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000003566 sealing material Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- -1 alicyclic hydrocarbons Chemical class 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- JLGADZLAECENGR-UHFFFAOYSA-N 1,1-dibromo-1,2,2,2-tetrafluoroethane Chemical compound FC(F)(F)C(F)(Br)Br JLGADZLAECENGR-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229920006038 crystalline resin Polymers 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、電気泳動粒子を利用した表示装置に関し、更
に詳細に云えば、表示制御用電極間に分散媒でｌｌｉ！
ｇ！する部材からなる有孔性スペーサを介装することに
よって分散系封入処理を簡易化できるようにした電気泳
動表示装置に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a display device using electrophoretic particles, and more specifically, the present invention relates to a display device using electrophoretic particles.
g! The present invention relates to an electrophoretic display device in which a dispersion system encapsulation process can be simplified by interposing a porous spacer made of a material such as:
「従来技術とその問題点」
この種の電気泳動表示装置は、少なくとも一方が透明な
対向配置した一組の電極板間に液体分散媒に電気泳動粒
子を分散させた分散系を封入し、上記電極板の極性に応
じて分散媒中の電気泳動粒子を透明電極板側に吸着又は
離反させろ得るように該極性を制御することによって、
所望の文字、記号或いは図形等を表示するように構成し
たものである。分散系に使用する液体分散媒は一般的に
公知であって、これには例えばアルコール系溶媒、各種
エステル類、脂肪族炭化水素、脂環式炭化水素、芳香族
炭化水素、ハロゲン化炭化水素又はその他の種々の油等
を単独又は適宜混合したものに界面活性剤などを適量添
加したものを使用できる。"Prior Art and its Problems" This type of electrophoretic display device has a dispersion system in which electrophoretic particles are dispersed in a liquid dispersion medium sealed between a pair of electrode plates, at least one of which is transparent, which are arranged opposite each other. By controlling the polarity of the electrode plate so that the electrophoretic particles in the dispersion medium can be adsorbed or separated from the transparent electrode plate depending on the polarity of the electrode plate,
It is configured to display desired characters, symbols, figures, etc. The liquid dispersion medium used in the dispersion system is generally known, and includes, for example, alcoholic solvents, various esters, aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, or It is also possible to use various other oils, etc., alone or as appropriate mixtures, to which an appropriate amount of a surfactant or the like is added.
また、電気泳動粒子としては、カーボンブラック、紺青
又はフタロシアニングリーン等が一般的なものとして知
られている。Further, as electrophoretic particles, carbon black, navy blue, phthalocyanine green, etc. are generally known.
第４図は、斯かる電気泳動表示装置の概念的な要部断面
構成図であって、１及び２はガラス板等の透明部材とそ
の一方面に所要のパターンで形成された透明電極を示し
、対向配置されたこれらの一組の透明電極２の間には、
電気泳動粒子４を含む分散系５を封入してあり、７は両
透明電極２を所要の間隙に保持する為に必要なスペーサ
を兼ねる端部封止材である。FIG. 4 is a conceptual cross-sectional diagram of essential parts of such an electrophoretic display device, in which 1 and 2 indicate a transparent member such as a glass plate and a transparent electrode formed in a desired pattern on one side of the transparent member. , between these pair of transparent electrodes 2 arranged oppositely,
A dispersion system 5 containing electrophoretic particles 4 is enclosed, and 7 is an end sealing material that also serves as a spacer necessary for holding both transparent electrodes 2 at a required gap.
このような電気泳動表示装置に於いて、装置の端部にの
みスペーサ乃至は封止材７を配設することによって分散
系５を画電極２間に単に封入する構造では、電気泳動粒
子４の凝集成いは付着現象によって表示ムラを発生する
恐れがあることがら、斯かる事態を防止する手段として
、第５図の如く、画電極２間にメツシュ状或いは多孔質
状の有孔性スペーサ９を配置して分散系５を不゛連続に
分割し、このような有孔性スペーサ９によって表示動作
の安定化を確保する構造も提案されている。In such an electrophoretic display device, if the dispersion system 5 is simply enclosed between the picture electrodes 2 by providing a spacer or a sealing material 7 only at the end of the device, the electrophoretic particles 4 Since display unevenness may occur due to agglomeration or adhesion, as a means to prevent such a situation, a mesh-like or porous porous spacer 9 is provided between the picture electrodes 2 as shown in FIG. A structure has also been proposed in which the dispersion system 5 is divided discontinuously by arranging the porous spacers 9 to ensure stabilization of the display operation.
しかしながら、上記のような有孔性スペーサ９を使用す
る電気泳動表示装置では、電気泳動粒子４の濃度を均一
に保持することは容易であるが、有孔性スペーサ９に形
成された小区域の多数の各透孔に対して分散系５を一様
に封入する処理は極めて困難である。However, in the electrophoretic display device using the porous spacer 9 as described above, it is easy to maintain a uniform concentration of the electrophoretic particles 4, but the small area formed in the porous spacer 9 It is extremely difficult to uniformly enclose the dispersion system 5 into each of the large number of through holes.
「発明の目的及び構成」
本発明は、分散系を不連続に分割する為の有孔性スペー
サを使用した場合に問題となる上記の如き分散系封入処
理の困難性を好適に解消することの可能な電気泳動表示
装置を提供することを主要な目的とするものである。``Object and Structure of the Invention'' The present invention is directed to suitably solving the above-mentioned difficulty in enclosing a dispersion system when a porous spacer is used to divide the dispersion system discontinuously. The main objective is to provide a possible electrophoretic display device.
本発明に係る電気泳動表示装置は、上記目的を達成する
為の手段として、少なくとも一方が透明な一組の対向電
極板間に電気泳動粒子を含む分散系を封入し、該電極間
に印加した表示制御用電圧の作用下に分散系内の電気泳
動粒子の分布状態を変えることによって光学的反射特性
に変化を与えて所要の表示動作を行わせるようにした電
気泳動表示装置に於いて、上記電極板間に分散媒により
膨潤する部材で形成した有孔性スペーサを介装し、該膨
潤質有孔性スペーサにより上記分散系を流動できる状態
で注入すると共に、該分散系の注入後にＩＩ！！潤作用
で分散系を不連続に分割できるように構成したものであ
る。As a means for achieving the above object, the electrophoretic display device according to the present invention includes a dispersion system containing electrophoretic particles sealed between a pair of opposing electrode plates, at least one of which is transparent, and a dispersion system containing electrophoretic particles applied between the electrodes. In an electrophoretic display device in which a desired display operation is performed by changing the optical reflection characteristics by changing the distribution state of electrophoretic particles in a dispersion system under the action of a display control voltage, A porous spacer made of a material that swells with the dispersion medium is interposed between the electrode plates, and the dispersion system is injected in a flowable state through the swellable porous spacer, and after the dispersion system is injected, II! ! It is constructed so that the dispersion system can be divided into discontinuous parts by moisturizing action.
「実 施 例」
以下、図示の実施例を参照しながら本発明を更に詳述す
ると、第１図に於いて、−組のガラス板等からなる透明
部材１の各対向面には表示制御用電圧を印加する為の透
明電極２が酸化スズ、酸化インジウム・スズ等からなる
透明導電部材で適宜形成されており、この両透明電極２
はスペーサを兼ねろ端部の封止材７によって所要の間隔
を保持するように対向配置される。そして、両透明電極
２の間には、電気泳動粒子４を分散媒中に分散させた分
散系５を本発明に従って構成したＩ！！潤質の有孔性ス
ペーサ３を使用して最終的には不連続に分割できるよう
に封入される。膨潤質有孔性スペーサ３は、分散媒によ
って膨潤する部材を使用して分散系５を注入孔６から注
入する際には分散系５を流動させて容易に注入し得るよ
うにその厚さが第１図の如く画電極２の対向間隙以下で
あって、分散系注入後には第３図のようにＷａＩによっ
て画電極２の対向間隙と同等又はそれより適度に大きな
厚さになって分散系５を不連続な小区域に分割できるよ
うに成形されている。``Example'' The present invention will be described in more detail below with reference to the illustrated embodiment. In FIG. A transparent electrode 2 for applying voltage is appropriately formed of a transparent conductive material made of tin oxide, indium tin oxide, etc., and both transparent electrodes 2
are arranged to face each other so as to maintain a required distance by a sealing material 7 at the end which also serves as a spacer. Between both transparent electrodes 2, a dispersion system 5 in which electrophoretic particles 4 are dispersed in a dispersion medium is provided according to the present invention. ! It is sealed using a porous spacer 3 so that it can finally be divided into discontinuous parts. The swellable porous spacer 3 has a thickness such that when the dispersion system 5 is injected from the injection hole 6 using a member that swells with the dispersion medium, the dispersion system 5 can be easily injected by flowing the dispersion system 5. As shown in FIG. 1, the thickness is less than the opposing gap between the picture electrodes 2, and after the dispersion is injected, the thickness becomes equal to or moderately larger than the opposing gap of the picture electrodes 2 due to WaI as shown in FIG. 5 can be divided into discontinuous small areas.
斯かる膨潤質素材としては、スチレン−ブタジェン系、
イソプレン系、エチレン−プロピレン系、アクリロニト
リロ−ブタジェン系、クロロプレン系の如き合成ゴムや
天然ゴム又は低結晶性の各種樹脂等を用いることが出来
、このような部材を用いて形成されろＮ！Ｂ潤質有孔性
スペーサ３に対しては、第２図（１）、（２）に例示し
た角状又はスリット状等の他、円状或いは長方形状など
任意形状で多数の透孔３Ａ、３Ｂを規則的又は不規則的
に打ち抜き加工やドリル加工の手段で適宜設けるか、若
しくは一方の透明電極２上にスクリーン印刷手段又はス
プレー手段等により上記態様で直接形成することも可能
であり、そのいずれの手法でも膨潤質有孔性スペーサ３
の成形状態に於ける厚さが透明電極２の対向間隙以下と
なるように熱プレス等で成形し得る。このようなＷ！潤
質有孔性スペーサ３の厚みは、素材の膨潤率、透明電１
ｉＦ１２の対向間隙及び使用する分散媒等を考慮して定
められるが、−船釣には２０μｍ〜１ ｍ ｍ程度の範
囲に選定できる。Such swellable materials include styrene-butadiene,
Synthetic rubbers such as isoprene-based, ethylene-propylene-based, acrylonitrilo-butadiene-based, and chloroprene-based rubbers, natural rubber, or various low-crystalline resins can be used, and it is possible to form them using such members! The B-moisture porous spacer 3 has a large number of through holes 3A in arbitrary shapes such as circular or rectangular shapes in addition to the square or slit shapes illustrated in FIGS. 2 (1) and (2). 3B may be provided regularly or irregularly by punching or drilling, or may be formed directly on one of the transparent electrodes 2 in the above manner by screen printing or spraying. In either method, the swellable porous spacer 3
It can be molded by hot pressing or the like so that the thickness in the molded state is equal to or less than the gap between the transparent electrodes 2 facing each other. W like this! The thickness of the porous spacer 3 depends on the swelling rate of the material and the transparent electrode 1.
It is determined by considering the opposing gap of iF12 and the dispersion medium used, but it can be selected in the range of about 20 μm to 1 mm for boat fishing.
分散系５を構成する電気泳動粒子４としては、酸化チタ
ンが好適であるが、その他、周知のコロイド粒子の他、
種々の有機・無気質顔料、染料、金属粉、ガラス或いは
樹脂等の微粉末などを適宜使用できる。また、そのため
の分散媒には、水、アルコール類、炭化水素、ハロゲン
化炭化水素等の他、天然又は合成の各種油などを任意に
使用し得る。なお、斯かる分散系５中には、必要に応じ
て電解質や界面活性剤、金属石けん、樹脂、ゴム、油、
フェス又はコンパウンドなどの粒子からなる荷電制御剤
に加えて分散剤、潤滑剤、安定化剤等を適宜添加できる
。更に、電気泳動粒子４の荷電を正又は負に統一したり
、ゼータ電位を高める為の手段や分散を均一安定化する
ことの他、該粒子４の透明電極２に対する吸着性や分散
媒の粘度等の調整を任意に行い得る。As the electrophoretic particles 4 constituting the dispersion system 5, titanium oxide is suitable, but in addition to well-known colloid particles,
Various organic and airless pigments, dyes, metal powders, fine powders of glass or resins, etc. can be used as appropriate. In addition, as a dispersion medium for this purpose, water, alcohols, hydrocarbons, halogenated hydrocarbons, and various natural or synthetic oils may be arbitrarily used. In addition, in the dispersion system 5, electrolytes, surfactants, metal soaps, resins, rubbers, oils,
In addition to a charge control agent made of particles such as a face or a compound, a dispersant, a lubricant, a stabilizer, etc. can be added as appropriate. Furthermore, in addition to unifying the charge of the electrophoretic particles 4 to be positive or negative, increasing the zeta potential, and stabilizing the dispersion uniformly, the adsorption property of the particles 4 to the transparent electrode 2 and the viscosity of the dispersion medium are also provided. etc. can be arbitrarily adjusted.
上記の如き膨潤質有孔性スペーサ３を具備する本発明の
電気泳動表示装置によれば、分散系５の注入に際しては
膨潤質有孔性スペーサ３の厚さは第１図の如く両透明電
極２の対向間隙以下に形成されて該間隙を連続する状態
に維持しているから、注入孔６を介して分散系５を該間
隙内に順次流動させながらとの有孔性スペーサ３の膨潤
が完了する以前にその所要量を手早く簡便確実に注入す
ることが容易とな口、従って可及的迅速に処理する必要
のある分散系５の注入工程を支障な（高能率に処理可能
となる。そして、分散系５の注入後は有孔性スペーサ３
の！Ｉ！潤作用によって両透明電極２の対向間隙内に充
満した分散系５は、第３図のように自然に多数の小区域
に不連続に分割されることとなり、そのＩＩ！！潤完了
後に注入孔６を適当なシール材８で封止して製品を得る
ことが出来る。According to the electrophoretic display device of the present invention having the above-mentioned swellable porous spacer 3, when the dispersion system 5 is injected, the thickness of the swellable porous spacer 3 is set so that the thickness of the swellable porous spacer 3 as shown in FIG. Since the dispersion system 5 is successively flowed into the gap through the injection hole 6, the swelling of the porous spacer 3 is prevented. It is easy to quickly, simply and reliably inject the required amount before the dispersion is completed, and therefore the injection process of the dispersion system 5, which needs to be processed as quickly as possible, can be processed with high efficiency. After the dispersion system 5 is injected, the porous spacer 3
of! I! Due to the moisturizing action, the dispersion system 5 filling the opposing gap between the two transparent electrodes 2 is naturally divided into many small areas discontinuously as shown in FIG. 3, and II! ! After hydration is completed, the injection hole 6 is sealed with a suitable sealing material 8 to obtain a product.
斯かる１！！潤質有孔性スペーサ３による分散系５の小
区域の不連続な分割形態では、電気泳動粒子４の透明電
極２と平行方向への移動を実質的に阻止し表示ムラの発
生を抑制して製品寿命を高め得る。This is 1! ! The discontinuous division of small areas of the dispersion system 5 by the moist porous spacer 3 substantially prevents the movement of the electrophoretic particles 4 in the direction parallel to the transparent electrode 2, thereby suppressing the occurrence of display unevenness. Product life can be increased.
本発明の一実施例に於いて、トルエン５０ｍｊとテトラ
フルオロジブロモエタン３０ｍｊの混合溶媒に濃紺の染
料を１．５ｇ溶かし、この溶媒に二酸化チタン５ｇを分
散剤と共に分散させて分散系を調製した。一方、透明ガ
ラス板に透明電極として酸化インジウム・スズのパター
ンを形成したものに第３図（１）のようなパターンを以
ってシリコンゴムをスクリーン印刷して膨潤質有孔性ス
ペーサを形成した。スペーサ兼端部封止材として２１１
厚さのフィルムを用いて注入孔を有する他の上記同様の
透明電極パターンを形成したガラス板と共に第１図のよ
うな電気泳動表示装置用セルを電極間距離が６５μｍと
なるように組立てた。次いで注入孔から上記分散系を素
早く注入してシリコンゴムを！！！潤させることによっ
て、分散系を不連続な小区域に分割させ、最後にシール
材で注入孔を封止した。この電気泳動表示装置に７０Ｖ
の電圧を印加してスイッチングをさせたところ、１００
万回のスイッチング動作でも表示ムラを発生せず、良好
な表示動作を示した。In one example of the present invention, 1.5 g of a dark blue dye was dissolved in a mixed solvent of 50 mj of toluene and 30 mj of tetrafluorodibromoethane, and 5 g of titanium dioxide was dispersed in this solvent together with a dispersant to prepare a dispersion system. On the other hand, a swellable porous spacer was formed by screen printing silicone rubber in a pattern as shown in Figure 3 (1) on a transparent glass plate with an indium tin oxide pattern formed as a transparent electrode. . 211 as a spacer and end sealing material
A cell for an electrophoretic display device as shown in FIG. 1 was assembled together with a glass plate on which a transparent electrode pattern similar to the above with injection holes was formed using a thick film so that the distance between the electrodes was 65 μm. Next, quickly inject the above dispersion system through the injection hole to make silicone rubber! ! ! The dispersion was divided into discrete small areas by moistening and finally the injection hole was sealed with a sealant. 70V to this electrophoretic display device
When switching was performed by applying a voltage of 100
Even after 10,000 switching operations, no display unevenness occurred and good display operation was achieved.
「発明の効果」
以上のとおり、本発明による電気泳動表示装置によれば
、透明電極間に分散系を小区域に不連続に分割して封入
する為の手段として、分散媒により！！！潤す石綿材で
形成した有孔性スペーサを上記電極間に介装し、との膨
潤質有孔性スペーサにより上記分散系を流動できろ状態
で注入すると共に該分散系の注入後に膨潤作用で分散系
を小区域に不連続に分割するように構成したので、少な
くとも次の効果を奏する。"Effects of the Invention" As described above, according to the electrophoretic display device of the present invention, the dispersion medium is used as a means for discontinuously dividing and enclosing the dispersion system into small areas between the transparent electrodes! ! ! A porous spacer made of a moistening asbestos material is interposed between the electrodes, and the dispersion system is injected in a fluid state through the swelling porous spacer, and the dispersion system is dispersed by swelling action after being injected. Since the system is configured to be discontinuously divided into small areas, at least the following effects are achieved.
分散系の注入時に電極と膨潤質有孔性スペーサとの間隔
を十分に確保した状態で分散系を流動させて注入するの
で、乙のＩＩＩ潤質有孔性スペーサの各透孔に対しても
分散系を順次−様に充満させながら分散系を迅速且つ容
易確実に注入処理できる。When injecting the dispersion system, the dispersion system is flowed and injected with a sufficient distance between the electrode and the swellable porous spacer. The dispersion system can be rapidly, easily and reliably filled with the dispersion system in a sequential manner.
分散系注入後は、有孔性スペーサの！！１！潤作用によ
り分散系を不連続な小区域に自然に分割できるので、分
散系注入処理の簡便化を図りながら分散系の不連続な分
割手段として極めて有利である。After dispersion injection, the porous spacer! ! 1! Since the dispersion system can be naturally divided into discontinuous small areas by the moisturizing action, it is extremely advantageous as a means for discontinuously dividing the dispersion system while simplifying the dispersion injection process.
有孔性スペーサの膨潤後は、対向電極の間隔を所要値に
保持して装置の機械的強度を補強するように作用するの
で、表示面積の大きなタイプ等にも好適に対応できる。After the porous spacer swells, it acts to maintain the distance between the opposing electrodes at a required value and reinforce the mechanical strength of the device, so it can be suitably used for types with large display areas.
従って、製造する上で格段に有利な構造であって、表示
ムラ等の発生を抑制して優れた表示特性を備えた電気泳
動表示装置を提供できる。Therefore, it is possible to provide an electrophoretic display device that has a structure that is extremely advantageous in manufacturing, suppresses the occurrence of display unevenness, and has excellent display characteristics.
第１図は本発明の一実施例に従って構成された膨潤質有
孔性スペーサを有する電気泳動表示装置の組立中の概念
的要部断面構成図、第２図（１）、（２）は膨潤質有孔
性スペーサの構成例を示す部分平面図、
第３図は組立完了状態の電気泳動表示装置の概念的要部
断面構成図、
第４図は有孔性スペーサを設けない従来構造の電気泳動
表示装置の問題点を説明するための断面説明図、そして
、
第５図は有孔性スペーサを有する従来構造に係る電気泳
動表示装置の問題点を同じく説明するための断面説明図
である。
１ ： 透 明 部 材２ ：
透 明 電 極３ ： 膨潤質有孔性スペ
ーサ
３Ａ： 角 状 の 透 孔３Ｂ： スリ
ット状の透 孔
４ ： 電気泳動粒子
５ ： 分 散 系６ ： 分散
系注入孔
７：端部封止材
８ ： 注入孔シール材
９ ： 従来の有孔性スペーサFIG. 1 is a conceptual cross-sectional diagram of main parts during assembly of an electrophoretic display device having a swellable porous spacer constructed according to an embodiment of the present invention, and FIGS. FIG. 3 is a conceptual cross-sectional configuration diagram of essential parts of an electrophoretic display device in a fully assembled state. FIG. 4 is a partial plan view showing an example of the structure of a porous spacer. FIG. 5 is a cross-sectional explanatory view for explaining the problems of a electrophoretic display device, and FIG. 5 is a cross-sectional view for explaining the problems of an electrophoretic display device having a conventional structure having a porous spacer. 1: Transparent member 2:
Transparent electrode 3: Swellable porous spacer 3A: Square-shaped transparent hole 3B: Slit-shaped transparent hole 4: Electrophoretic particles 5: Dispersion system 6: Dispersion system injection hole 7: End sealing material 8 : Injection hole sealing material 9 : Conventional porous spacer
Claims (1)
粒子を含む分散系を封入し、該電極間に印加した表示制
御用電圧の作用下に分散系内の電気泳動粒子の分布状態
を変えることによって光学的反射特性に変化を与えて所
要の表示動作を行わせるようにした電気泳動表示装置に
於いて、上記電極板間に分散媒により膨潤する部材で形
成した有孔性スペーサを介装し、この膨潤質有孔性スペ
ーサにより上記分散系を流動できる状態で注入すると共
に該分散系の注入後に膨潤作用で分散系を不連続に分割
するように構成したことを特徴とする電気泳動表示装置
。A dispersion system containing electrophoretic particles is enclosed between a pair of opposing electrode plates, at least one of which is transparent, and the distribution state of the electrophoretic particles within the dispersion system is changed under the action of a display control voltage applied between the electrodes. In an electrophoretic display device that performs a desired display operation by changing optical reflection characteristics, a porous spacer made of a material that swells with a dispersion medium is interposed between the electrode plates. and an electrophoretic display characterized in that the dispersion system is injected in a flowable state through the swellable porous spacer, and the dispersion system is discontinuously divided by a swelling action after the dispersion system is injected. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62272777A JPH01114828A (en) | 1987-10-28 | 1987-10-28 | Electrophoresis display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62272777A JPH01114828A (en) | 1987-10-28 | 1987-10-28 | Electrophoresis display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01114828A true JPH01114828A (en) | 1989-05-08 |
Family
ID=17518602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62272777A Pending JPH01114828A (en) | 1987-10-28 | 1987-10-28 | Electrophoresis display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01114828A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402145A (en) * | 1993-02-17 | 1995-03-28 | Copytele, Inc. | Electrophoretic display panel with arc driven individual pixels |
| US6876476B1 (en) | 1999-05-18 | 2005-04-05 | Canon Kabushiki Kaisha | Display device and process for production thereof |
| JP2008064888A (en) * | 2006-09-05 | 2008-03-21 | Ricoh Co Ltd | Electrophoretic display device and method for manufacturing the same |
| JP2010501889A (en) * | 2006-08-21 | 2010-01-21 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Sealed cell structure |
| JP2010197494A (en) * | 2009-02-23 | 2010-09-09 | Bridgestone Corp | Information display panel |
| JPWO2009145255A1 (en) * | 2008-05-28 | 2011-10-13 | 株式会社ブリヂストン | Electronic paper |
-
1987
- 1987-10-28 JP JP62272777A patent/JPH01114828A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402145A (en) * | 1993-02-17 | 1995-03-28 | Copytele, Inc. | Electrophoretic display panel with arc driven individual pixels |
| US6876476B1 (en) | 1999-05-18 | 2005-04-05 | Canon Kabushiki Kaisha | Display device and process for production thereof |
| US6958842B2 (en) | 1999-05-18 | 2005-10-25 | Canon Kabushiki Kaisha | Display device and process for production thereof |
| JP2010501889A (en) * | 2006-08-21 | 2010-01-21 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Sealed cell structure |
| JP2008064888A (en) * | 2006-09-05 | 2008-03-21 | Ricoh Co Ltd | Electrophoretic display device and method for manufacturing the same |
| JPWO2009145255A1 (en) * | 2008-05-28 | 2011-10-13 | 株式会社ブリヂストン | Electronic paper |
| JP2010197494A (en) * | 2009-02-23 | 2010-09-09 | Bridgestone Corp | Information display panel |
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