JP2003161964A - Multicolor display panel - Google Patents
Multicolor display panelInfo
- Publication number
- JP2003161964A JP2003161964A JP2001358232A JP2001358232A JP2003161964A JP 2003161964 A JP2003161964 A JP 2003161964A JP 2001358232 A JP2001358232 A JP 2001358232A JP 2001358232 A JP2001358232 A JP 2001358232A JP 2003161964 A JP2003161964 A JP 2003161964A
- Authority
- JP
- Japan
- Prior art keywords
- display panel
- multicolor display
- pattern
- particles
- white
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、多色表示パネルに
係り、特に、電界の印加により移動または回転する電気
泳動粒子または回転粒子を用いた多色表示パネルに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multicolor display panel, and more particularly to a multicolor display panel using electrophoretic particles or rotating particles that move or rotate when an electric field is applied.
【０００２】[0002]
【従来の技術】背面にバックライトを設け、その発光を
液晶パネルで制御する透過型ＬＣＤ（Ｌｉｑｕｉｄ Ｃ
ｒｙｓｔａｌ Ｄｉｓｐｌａｙ）に対し、周囲の照明
（環境光）の反射光を制御する反射型ＬＣＤが、低消費
電力や直射日光下での視認性の良さの理由から、主に携
帯情報端末用に用いられるようになってきている。ま
た、近年、ＬＣＤとは異なる表示原理を利用したディス
プレイも報告されており、ＬＣＤにはない特徴を有する
反射型ディスプレイとして期待されている。2. Description of the Related Art A transmissive LCD (Liquid C) is provided with a back light on its back surface and its light emission is controlled by a liquid crystal panel.
In contrast to a vertical display, a reflective LCD that controls the reflected light of ambient lighting (ambient light) is mainly used for mobile information terminals because of its low power consumption and good visibility in direct sunlight. Is starting to appear. In addition, in recent years, a display utilizing a display principle different from that of an LCD has been reported, and is expected as a reflective display having a characteristic that the LCD does not have.
【０００３】そのようなＬＣＤに代わる他の表示方式と
して、帯電した微粒子を電場によって動かす電気泳動方
式（特許第２５５１７８５号公報）、２色に塗り分けら
れた球体を電場で回転させるツイストボール方式（特許
第２８６０７９０号公報）なども知られている。As another display method in place of such an LCD, an electrophoretic method in which charged fine particles are moved by an electric field (Japanese Patent No. 2551785) and a twist ball method in which spheres separately coated in two colors are rotated in the electric field ( Japanese Patent No. 2860790) and the like are also known.
【０００４】[0004]
【発明が解決しようとする課題】しかし、これらの表示
方式は、いずれも反射（散乱）状態を電界の印加で制御
するものであり、高精細で高品位の多色表示を実現する
ことは出来なかった。However, all of these display methods control the reflection (scattering) state by applying an electric field, and it is not possible to realize high-definition and high-quality multicolor display. There wasn't.
【０００５】本発明は、このような事情の下になされ、
高精細で高品位の多色表示を実現することを可能とした
多色表示パネルを提供することを目的とする。The present invention has been made under these circumstances,
It is an object of the present invention to provide a multi-color display panel capable of realizing high-definition and high-quality multi-color display.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、本発明は、少なくとも一方が透明な一対の基板間
に、電界の印加により移動または回転する粒子を含む表
示体を配置した多色表示パネルにおいて、前記一対の基
板の少なくとも一方の透明な基板上に、カラーフィルタ
を形成したことを特徴とする多色表示パネルを提供す
る。In order to solve the above problems, the present invention provides a multicolor display in which a display body containing particles that move or rotate by application of an electric field is arranged between a pair of substrates, at least one of which is transparent. In a panel, there is provided a multi-color display panel characterized in that a color filter is formed on at least one transparent substrate of the pair of substrates.
【０００７】かかる多色表示パネルにおいて、表示体
は、電気泳動粒子を分散媒中に分散させて封入したマイ
クロカプセルとすることが出来る。なお、マイクロカプ
セルの粒径は、１〜１，０００μｍ程度が好ましく、通
常は数１０μｍである。In such a multicolor display panel, the display body can be a microcapsule in which electrophoretic particles are dispersed and enclosed in a dispersion medium. The particle size of the microcapsules is preferably about 1 to 1,000 μm, and usually several tens of μm.
【０００８】この場合、多色表示パネルは、白色電気泳
動粒子と黒色電気泳動粒子とを透明分散媒中に分散させ
て封入したマイクロカプセルを基板間に配置したものと
することが出来る。In this case, the multicolor display panel may be one in which microcapsules in which white electrophoretic particles and black electrophoretic particles are dispersed and enclosed in a transparent dispersion medium are arranged between the substrates.
【０００９】或いは、多色表示パネルは、誘電性液体中
に封入された、白色および黒色の表面領域を有する回転
粒子、いわゆるツイストボールを基板上に配置したもの
であってもよい。ツイストボールは、例えば白色ワック
ス粒子の半球面を着色し、誘電性液体中に封入し、電界
の印加により回転可能としたものである。ツイストボー
ルの粒径は、１〜１，０００μｍ程度が好ましい。Alternatively, the multicolor display panel may be one in which rotating particles, so-called twist balls, having white and black surface regions, which are encapsulated in a dielectric liquid, are arranged on a substrate. The twist ball is, for example, a white wax particle in which the hemispherical surface is colored, encapsulated in a dielectric liquid, and made rotatable by the application of an electric field. The particle size of the twist balls is preferably about 1 to 1,000 μm.
【００１０】本発明の多色表示パネルにおいて、カラー
フィルタのパターン形状は特に制限されるものではな
く、適宜好適な形状を用いることが出来る。例えば、各
々のパターン形状が長方形、正方形や円に近い場合に
は、３種類のパターンが繰り返し並んでいても、Ｌ字配
列であっても、三角配列であっても、さらにはモザイク
配列やランダム配列であってもよい。また、複数の着色
パターンと白色パターンを含むものとすることが出来
る。この場合、白色パターンの面積は、複数の着色パタ
ーンのうち、最も面積が小さいものと同一又はそれより
も小さいことが望ましい。そうすることにより、より高
品位の多色表示を実現することが出来る。In the multicolor display panel of the present invention, the pattern shape of the color filter is not particularly limited, and any suitable shape can be used. For example, when each pattern shape is close to a rectangle, a square, or a circle, three types of patterns are repeatedly arranged, an L-shaped array, a triangular array, a mosaic array, or a random array. It may be an array. In addition, a plurality of colored patterns and a white pattern can be included. In this case, the area of the white pattern is preferably the same as or smaller than the smallest area of the plurality of colored patterns. By doing so, higher quality multicolor display can be realized.
【００１１】また、カラーフィルタは、複数の着色パタ
ーンと無着色領域を含むものとすることが出来る。この
場合、無着色領域の面積は、複数の着色パターンのう
ち、最も面積が小さいものと同一又はそれよりも小さい
ことが望ましい。そうすることにより、より高品位の多
色表示を実現することが出来る。The color filter may include a plurality of colored patterns and non-colored areas. In this case, it is desirable that the area of the non-colored region be the same as or smaller than the smallest area of the plurality of colored patterns. By doing so, higher quality multicolor display can be realized.
【００１２】なお、複数の着色パターンは、赤（Ｒ）、
緑（Ｇ）、青（Ｂ）、イエロー（Ｙ）、マゼンタ
（Ｍ）、シアン（Ｃ）の３原色とすることが出来る。本
発明の多色表示パネルの動作原理は、例えば、次の通り
である。即ち、少なくとも一方にカラーフィルタを設け
た一対の基板間に、白色電気泳動粒子と黒色電気泳動粒
子とを透明分散媒中に分散させて封入したマイクロカプ
セルまたは白色および黒色の表面領域を有する回転粒子
を配置した多色表示パネルにおいて、電気泳動粒子また
は回転粒子に対し、カラーフィルタ側が正となる方向の
電界を印加すると、白色電気泳動粒子または回転粒子の
白色領域が負に帯電している場合、カラーフィルタ側に
移動し、または回転により向きを変え、観察側からの光
がそれに反射して、対向する着色パターンを透過し、そ
の着色パターンの色表示がなされる。The plurality of coloring patterns are red (R),
It is possible to use three primary colors of green (G), blue (B), yellow (Y), magenta (M), and cyan (C). The operation principle of the multicolor display panel of the present invention is as follows, for example. That is, between a pair of substrates provided with a color filter on at least one side, white electrophoretic particles and black electrophoretic particles are dispersed in a transparent dispersion medium and enclosed in microcapsules or rotating particles having white and black surface regions. In the multicolor display panel in which the electrophoretic particles or the rotating particles are applied with an electric field in the direction in which the color filter side is positive, when the white regions of the white electrophoretic particles or the rotating particles are negatively charged, The light from the observing side is reflected by it by moving to the color filter side or changing its direction by rotation, and transmits through the opposing colored pattern, and the color display of the colored pattern is performed.
【００１３】逆に、電気泳動粒子または回転粒子に対
し、カラーフィルタ側が負となる方向の電界を印加する
と、黒色電気泳動粒子または回転粒子の黒色領域がカラ
ーフィルタ側に移動し、または回転により向きを変え、
観察側からの光がそれに吸収され、色表示はなされな
い。On the contrary, when an electric field in which the color filter side becomes negative is applied to the electrophoretic particles or the rotating particles, the black region of the black electrophoretic particles or the rotating particles moves to the color filter side or is oriented by the rotation. Change
Light from the viewing side is absorbed by it and no color is displayed.
【００１４】このように、電気泳動粒子または回転粒子
に印加される電界の方向を適宜選択・制御することによ
り、所定の多色表示を行うことが出来るのである。As described above, by appropriately selecting and controlling the direction of the electric field applied to the electrophoretic particles or the rotating particles, it is possible to perform predetermined multicolor display.
【００１５】以上のように構成される本発明の多色表示
パネルによると、高精細で、高い画像品位の多色表示を
実現することが可能である。According to the multicolor display panel of the present invention configured as described above, it is possible to realize multicolor display with high definition and high image quality.
【００１６】[0016]
【発明の実施の形態】以下、本発明の実施の形態として
の実施例を示し、本発明について具体的に説明する。な
お、本発明はこれらの実施例に限定されるものではな
い。「部」の表記は、特に断わりのない限り、いずれも
重量部である。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be specifically described by showing Examples as embodiments of the present invention. The present invention is not limited to these examples. Unless otherwise specified, all "parts" are parts by weight.
【００１７】＜実施例１＞まず、テトラクロロエチレン
溶媒１００部に、溶液中で負に帯電するポリエチレン樹
脂で表面被覆した平均粒径３μｍの酸化チタン６０部
と、溶液中で正に帯電するアルキルトリメチルアンモニ
ウムクロライドで表面処理した平均粒径４．０μｍのカ
ーボンブラック４０部とが分散された分散液を作成し
た。Example 1 First, 100 parts of a tetrachloroethylene solvent, 60 parts of titanium oxide having an average particle size of 3 μm, which was surface-coated with a polyethylene resin negatively charged in a solution, and alkyltrimethylammonium positively charged in a solution. A dispersion liquid was prepared in which 40 parts of carbon black having an average particle size of 4.0 μm and surface-treated with chloride were dispersed.
【００１８】この分散液４０部と、水８０部にゼラチン
１０部と乳化剤としてポリスチレンスルホン酸ナトリウ
ム０．１部を配合した水溶液とを混合し、液温を４０℃
に調整した後、液温を保ちながらホモジナイザーを用い
て攪拌し、Ｏ／Ｗエマルションを得た。40 parts of this dispersion and 80 parts of water were mixed with 10 parts of gelatin and an aqueous solution containing 0.1 parts of sodium polystyrene sulfonate as an emulsifier, and the liquid temperature was 40.degree.
After adjusting to, the mixture was stirred using a homogenizer while maintaining the liquid temperature to obtain an O / W emulsion.
【００１９】次いで、得られたＯ／Ｗエマルションと、
４０℃に調整された水８０部にアラビアゴム１０部を配
合した水溶液とをディスパーを用いて混合し、溶液の液
温を４０℃に保ちながら、酢酸を用いて溶液のｐＨを４
に調製し、コアセルベーションによりマイクロカプセル
壁を形成した。Then, the obtained O / W emulsion and
80 parts of water adjusted to 40 ° C. was mixed with an aqueous solution prepared by mixing 10 parts of gum arabic with a disper, and the pH of the solution was adjusted to 4 with acetic acid while keeping the solution temperature at 40 ° C.
Prepared, and microcapsule walls were formed by coacervation.
【００２０】次に、液温を５℃に低下させた後、３７重
量％ホルマリン溶液１．９部を加えて、マククロカプセ
ル壁を硬化させた、白色及び黒色の粒子が分散した分散
液を封入したマイクロカプセルを作成した。このように
して作成したマイクロカプセルを、ふるい分けにより、
それぞれ４０μｍの径に揃えた。Next, after lowering the liquid temperature to 5 ° C., 1.9 parts of a 37% by weight formalin solution was added to harden the wall of the Mackuro capsule, to obtain a dispersion liquid in which white and black particles were dispersed. Encapsulated microcapsules were created. By sieving the microcapsules created in this way,
The diameter was adjusted to 40 μm.
【００２１】得られたマイクロカプセル１００部と、ポ
リウレタン樹脂溶液（ニッポラン５０３７、日本ポリウ
レタン工業社製）１００部と、硬化剤（コロネートＨ
Ｌ、日本ポリウレタン工業社製）５部とを混合して、塗
工液を作成した。100 parts of the obtained microcapsules, 100 parts of a polyurethane resin solution (Nipporan 5037, manufactured by Nippon Polyurethane Industry Co., Ltd.), and a curing agent (Coronate H)
L, manufactured by Nippon Polyurethane Industry Co., Ltd.) to prepare a coating solution.
【００２２】図１に示すように、この塗工液を、透明ガ
ラス基板１上にアプリケーターを用いて塗布し、１２０
℃で２０分間乾燥し、膜厚５０μｍのマイクロカプセル
層１６を得た。図中、参照符号１５は、マイクロカプセ
ル層１６の塗布に用いたバインダを示す。なお、透明ガ
ラス基板１上には、酸化インジウム錫（以下ＩＴＯと略
す）からなる縦３７０μｍ×横１１０μｍのパターンが
２０μｍの間隔を空けて繰り返し形成されている画素電
極２、マトリクス電極（図示せず）、およびスイッチン
グ素子（図示せず）が設けられている。As shown in FIG. 1, this coating solution is applied onto the transparent glass substrate 1 using an applicator, and 120
After drying at 0 ° C. for 20 minutes, a microcapsule layer 16 having a film thickness of 50 μm was obtained. In the figure, reference numeral 15 indicates a binder used for coating the microcapsule layer 16. A pixel electrode 2 and a matrix electrode (not shown) in which a pattern of indium tin oxide (hereinafter abbreviated as ITO) of 370 μm in length × 110 μm in width is repeatedly formed at intervals of 20 μm on the transparent glass substrate 1. ), And a switching element (not shown).
【００２３】個々のマイクロカプセル１４中には、透明
分散媒１１中に分散された白色粒子１２および黒色粒子
１３が封入されている。White particles 12 and black particles 13 dispersed in a transparent dispersion medium 11 are enclosed in each microcapsule 14.
【００２４】一方、カラーフィルタを以下の方法で作成
した。まず、メタクリル酸ブチル５０部、メタクリル酸
メチル２０部、アクリル酸３０部をシクロヘキサノンを
溶媒として共重合させ、アクリル樹脂を作成した。On the other hand, a color filter was prepared by the following method. First, 50 parts of butyl methacrylate, 20 parts of methyl methacrylate, and 30 parts of acrylic acid were copolymerized with cyclohexanone as a solvent to prepare an acrylic resin.
【００２５】このアクリル樹脂２５部に対し、溶媒が４
７部の比率になるようにアクリル樹脂溶液を調製し、こ
れに赤色顔料（Ｐｉｇｍｅｎｔ Ｒｅｄ２２）２０部を
配合し、ビーズミルで１時間分散した。その後、更に、
感光性モノマーとしてジペンタエリスリトール４部、ヘ
キサアクリレート４部、および光重合開始剤としてビス
（２，４，６−トリメチルベンゾイル）−フェニルフォ
スフィンオキサイド０．３部をディスパーにて混合し、
赤色フォトレジスト材料を調製した。To 25 parts of this acrylic resin, the solvent was 4
An acrylic resin solution was prepared so as to have a ratio of 7 parts, 20 parts of a red pigment (Pigment Red 22) was added thereto, and the mixture was dispersed for 1 hour by a bead mill. After that,
4 parts of dipentaerythritol as a photosensitive monomer, 4 parts of hexaacrylate, and 0.3 part of bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide as a photopolymerization initiator were mixed with a disper,
A red photoresist material was prepared.
【００２６】この赤色フォトレジスト材料を、図３に示
すように、透明ガラス基板４上にスピンコートし、常温
で５分間放置して膜表面を平滑化した後、７０℃で２０
分間乾燥させ、赤色フォトレジスト層を形成した。As shown in FIG. 3, this red photoresist material was spin-coated on a transparent glass substrate 4 and allowed to stand at room temperature for 5 minutes to smooth the film surface, and then at 20 ° C. at 20 ° C.
After drying for a minute, a red photoresist layer was formed.
【００２７】そして、この赤色フォトレジスト層に、縦
１００ｍｍ×横１１０μｍの露光部ストライプパターン
が横方向２８０μｍの遮光部を介して繰り返し形成され
てなるフォトマスクを密着させ、超高圧水銀灯により、
露光量１５０ｍＪ／ｃｍ２の条件で密着露光した。Then, a photomask formed by repeatedly forming an exposed portion stripe pattern having a length of 100 mm × a width of 110 μm through a light-shielding portion having a width of 280 μm was brought into close contact with the red photoresist layer, and an ultrahigh pressure mercury lamp was used.
Contact exposure was performed under the condition of an exposure amount of 150 mJ / cm 2 .
【００２８】露光後、温度２０℃の１％炭酸ナトリウム
水溶液を噴出圧力１ｋｇ／ｃｍ２で噴霧するスプレー現
像を２０秒間行い、未露光部位を除去して、ガラス基板
４を露出させた。After the exposure, spray development was performed by spraying a 1% sodium carbonate aqueous solution at a temperature of 20 ° C. at a jet pressure of 1 kg / cm 2 for 20 seconds to remove the unexposed portion and expose the glass substrate 4.
【００２９】現像処理後の基板４を乾燥した後、２３０
℃で１時間加熱することにより硬膜処理を行い、図３に
示すように、膜厚１．１μｍの赤色パターン１１１を得
た。After the development-processed substrate 4 is dried, 230
Hardening treatment was performed by heating at a temperature of 1 ° C. for 1 hour to obtain a red pattern 111 having a film thickness of 1.1 μm as shown in FIG.
【００３０】次に、この赤色パターンが形成された基板
上に、色材として緑色顔料（Ｐｉｇｍｅｎｔ Ｇｒｅｅ
ｎ７）を用い、前記と同様の組成で作成した緑色フォト
レジスト材料を使用し、緑色フォトレジスト層を形成し
た。Next, a green pigment (Pigment Green) is used as a coloring material on the substrate on which the red pattern is formed.
n7) was used to form a green photoresist layer using a green photoresist material prepared with the same composition as described above.
【００３１】そして、前記と同様のフォトマスクを赤色
パターンを形成した位置から横軸方向に１３０μｍ移動
させた位置に設置し、露光量２００ｍＪ／ｃｍ２の条件
で密着露光した。Then, a photomask similar to that described above was placed at a position moved by 130 μm in the horizontal axis direction from the position where the red pattern was formed, and contact exposure was carried out under the condition of an exposure amount of 200 mJ / cm 2 .
【００３２】露光後、温度２０℃の１％炭酸ナトリウム
水溶液を噴出圧力１ｋｇ／ｃｍ２で噴霧するスプレー現
像を３０秒間行い、未露光部位を除去してガラス基板を
露出させた。After the exposure, spray development was carried out by spraying a 1% sodium carbonate aqueous solution at a temperature of 20 ° C. at a jet pressure of 1 kg / cm 2 for 30 seconds to remove the unexposed portion to expose the glass substrate.
【００３３】現像処理後の基板を乾燥した後、前記と同
様に２３０℃で１時間加熱することにより硬膜処理を行
い、膜厚１．２μｍの緑色パターン１１２を得た。After the development-processed substrate was dried, the film was hardened by heating at 230 ° C. for 1 hour in the same manner as described above to obtain a green pattern 112 having a thickness of 1.2 μm.
【００３４】更に、前記と同様に、色材として青色顔料
（Ｐｉｇｍｅｎｔ Ｂｌｕｅ１５：６）を用い、青色フ
ォトレジスト材料を作成し、膜厚１．１μｍの青色パタ
ーン１１３を得た。Further, in the same manner as described above, a blue photoresist material was prepared using a blue pigment (Pigment Blue 15: 6) as a coloring material to obtain a blue pattern 113 having a film thickness of 1.1 μm.
【００３５】このようにして３色の着色パターンが形成
されたカラーフィルタの全面に、ＩＴＯ電極３を形成
し、これを前記マイクロカプセル層１６上に、画素電極
２と着色パターン１１１，１１２，１１３との位置を合
わせて、貼り合わせ、図１に示す多色表示パネルを得
た。In this way, the ITO electrode 3 is formed on the entire surface of the color filter on which the three colored patterns are formed, and the ITO electrode 3 is formed on the microcapsule layer 16 and the pixel electrode 2 and the colored patterns 111, 112, 113. Were aligned and bonded to obtain a multicolor display panel shown in FIG.
【００３６】得られた多色表示パネルの表示特性を評価
したところ、いずれのマイクロカプセル中の黒色粒子１
３と白色粒子１２も、９０Ｖの印加電圧で電界の向きに
従い両電極間を互い違いに移動し、加法混色による高精
細で、高品位の多色表示を実現することができた。When the display characteristics of the obtained multicolor display panel were evaluated, the black particles 1 in any of the microcapsules were evaluated.
3 and the white particles 12 also moved alternately between the two electrodes according to the direction of the electric field with an applied voltage of 90 V, and high-definition and high-quality multicolor display by additive color mixing could be realized.
【００３７】＜実施例２＞実施例１と同様の赤色フォト
レジスト材料を用い、縦３７０μｍ×横１１０μｍのパ
ターンが縦方向２０μｍ、横方向４１０μｍの間隔を空
けて繰り返し形成された遮光膜を有するフォトマスクを
用い、図４に示すように、透明ガラス基板４上に赤色パ
ターン２１１を形成した。Example 2 Using the same red photoresist material as in Example 1, a photo having a light-shielding film in which a pattern of 370 μm in length × 110 μm in width was repeatedly formed at intervals of 20 μm in the vertical direction and 410 μm in the horizontal direction. Using a mask, a red pattern 211 was formed on the transparent glass substrate 4 as shown in FIG.
【００３８】次いで、実施例１と同様の緑色フォトレジ
スト材料を用い、前記マスクを赤色パターン２１１を形
成した位置から横軸方向に１３０μｍ移動させた位置に
設置して露光を行い、同様な工程で緑色パターン２１２
を形成した。Next, using the same green photoresist material as in Example 1, the mask was placed at a position 130 μm moved in the horizontal axis direction from the position where the red pattern 211 was formed, and exposure was carried out. Green pattern 212
Was formed.
【００３９】次に、実施例１と同様の青色フォトレジス
ト材料を用い、同様の工程で青色パターン２１３を形成
した。Next, a blue pattern 213 was formed in the same process using the same blue photoresist material as in Example 1.
【００４０】更に、色材として白色顔料（酸化チタン）
を使用し、前記と同様の組成で作成したフォトレジスト
材料を用い、白色フォトレジスト層を形成した。そし
て、前記フォトマスクを青色パターン２１３を形成した
位置から横軸方向に１３０μｍ移動させた位置に設置
し、露光量４００ｍＪ／ｃｍ２の条件で密着露光した。Furthermore, a white pigment (titanium oxide) is used as a coloring material.
Was used to form a white photoresist layer using a photoresist material prepared with the same composition as described above. Then, the photomask was placed at a position moved by 130 μm in the horizontal axis direction from the position where the blue pattern 213 was formed, and contact exposure was performed under the condition of an exposure amount of 400 mJ / cm 2 .
【００４１】露光後、温度２０℃の１％炭酸ナトリウム
水溶液を噴出圧力１ｋｇ／ｃｍ２で噴霧するスプレー現
像を４０秒間行い、前記と同様の工程で１．０μｍの白
色パターン２１４を形成した。After the exposure, spray development was performed by spraying a 1% sodium carbonate aqueous solution at a temperature of 20 ° C. at a jet pressure of 1 kg / cm 2 for 40 seconds, and a white pattern 214 of 1.0 μm was formed in the same process as above.
【００４２】このようにして４色のパターンが形成され
たカラーフィルタの面全体にＩＴＯ電極３を形成し、実
施例１と同様にして基板１上に形成されたマイクロカプ
セル層１６上に、画素電極２と着色パターン２１１，２
１２，２１３，２１４との位置を合わせて、貼り合わ
せ、図２に示すような多色表示パネルを得た。In this way, the ITO electrode 3 is formed on the entire surface of the color filter on which the pattern of four colors is formed, and the pixel is formed on the microcapsule layer 16 formed on the substrate 1 in the same manner as in Example 1. Electrode 2 and colored patterns 211, 211
The multicolor display panel as shown in FIG. 2 was obtained by aligning the positions of 12, 213 and 214 with each other and bonding them together.
【００４３】得られた表示パネルの表示特性を評価した
ところ、いずれのマイクロカプセル中の黒色粒子１３と
白色粒子１２も、９０Ｖの印加電圧で電界の向きに従
い、両電極間２，３を互い違いに移動し、加法混色によ
る高精細で、高品位、且つ、明るい多色表示を実現する
ことができた。When the display characteristics of the obtained display panel were evaluated, the black particles 13 and the white particles 12 in any of the microcapsules were staggered between the electrodes 2 and 3 according to the direction of the electric field at an applied voltage of 90V. By moving, it was possible to realize high-definition, high-quality and bright multicolor display by additive color mixing.
【００４４】＜実施例３＞実施例１と同様にして作成し
たマイクロカプセル塗工液を、透明ガラス基板１上にア
プリケーターを用いて塗布し、１２０℃で２０分間乾燥
し、膜厚５０μｍのマイクロカプセル層を得た。図な
お、透明ガラス基板１上には、ＩＴＯからなる縦１１０
μｍ×横１１０μｍのパターンが２０μｍの間隔を空け
て繰り返し形成されている画素電極、マトリクス電極、
およびスイッチング素子が設けられている。また、個々
のマイクロカプセル中には、透明分散媒中に分散された
白色粒子および黒色粒子が封入されている。Example 3 The microcapsule coating solution prepared in the same manner as in Example 1 was applied onto the transparent glass substrate 1 using an applicator and dried at 120 ° C. for 20 minutes to give a microcapsule having a film thickness of 50 μm. A capsule layer was obtained. In addition, on the transparent glass substrate 1, a vertical 110 made of ITO is formed.
a pixel electrode, a matrix electrode, in which a pattern of μm × 110 μm in width is repeatedly formed at intervals of 20 μm,
And a switching element is provided. Further, white particles and black particles dispersed in a transparent dispersion medium are enclosed in each microcapsule.
【００４５】次に、実施例１と同様の赤色フォトレジス
ト材料を用い、縦１１０μｍ×横１１０μｍのパターン
が縦横方向それぞれ１５０μｍの間隔を空けて繰り返し
形成された遮光膜を有するフォトマスクを用い、図５に
示すように、全面にＩＴＯ電極が形成された１２５μｍ
厚のポリエチレンテレフタラート基材２４上に赤色パタ
ーン３１１を形成した。なお、この赤色パターン形成工
程は、２３０℃で１時間加熱し、硬膜処理を行う工程
を、１０Ｍｒａｄの電子線を照射する工程とする以外
は、実施例１と同様にして行った。Next, the same red photoresist material as in Example 1 was used, and a photomask having a light-shielding film in which patterns of 110 μm in length × 110 μm in width were repeatedly formed at intervals of 150 μm in each of the vertical and horizontal directions was used. As shown in FIG. 5, 125 μm with an ITO electrode formed on the entire surface
The red pattern 311 was formed on the thick polyethylene terephthalate substrate 24. The red pattern forming step was performed in the same manner as in Example 1 except that the step of performing the film hardening treatment by heating at 230 ° C. for 1 hour was the step of irradiating with an electron beam of 10 Mrad.
【００４６】次に、実施例１と同様の緑色フォトレジス
ト材料を用い、前記マスクを赤色パターン３１１を形成
した位置から横軸方向に１３０μｍ移動させた位置に設
置して露光を行い、同様な工程で緑色パターン３１２を
形成した。Next, using the same green photoresist material as in Example 1, the mask was set at a position moved 130 μm in the horizontal axis direction from the position where the red pattern 311 was formed, and exposure was performed. To form a green pattern 312.
【００４７】また、実施例１と同様の青色フォトレジス
ト材料を用い、前記マスクを赤色パターン３１１を形成
した位置から縦方向に１３０μｍ移動させた位置に設置
して露光を行い、同様な工程で青色パターン３１３を形
成した。図５において、領域３１４は、無着色のまま残
された。Also, using the same blue photoresist material as in Example 1, the mask was set at a position vertically moved by 130 μm from the position where the red pattern 311 was formed, and exposure was carried out. The pattern 313 was formed. In FIG. 5, the region 314 was left uncolored.
【００４８】そして、３色の着色パターン３１１，３１
２，３１３及び無着色の領域３１４からなるカラーフィ
ルタを、前記マイクロカプセル層上に、画素電極と着色
パターンとの位置を合わせて、貼り合わせ、多色表示パ
ネルを得た。The three colored patterns 311 and 31
A color filter composed of Nos. 2, 313 and a non-colored region 314 was attached on the microcapsule layer with the pixel electrode and the color pattern aligned with each other to obtain a multicolor display panel.
【００４９】得られた表示パネルの表示特性を評価した
ところ、いずれのマイクロカプセル中の黒色粒子と白色
粒子も、１３０Ｖの印加電圧で電界の向きに従い両電極
間を互い違いに移動し、加法混色による高精細で、高品
位、且つ、明るくコントラストが良好な多色表示を行う
ことができた。When the display characteristics of the obtained display panel were evaluated, black particles and white particles in any of the microcapsules moved alternately between the two electrodes according to the direction of the electric field at an applied voltage of 130 V, resulting in additive color mixing. High-definition, high-quality, bright, and good-contrast multicolor display could be performed.
【００５０】以上の実施例では、電気泳動粒子を封入し
たマイクロカプセルを用いた例について説明したが、本
発明は、これに限らず、表面が誘電性液体で覆われた少
なくとも２種類の色領域を有する回転粒子、いわゆるツ
イストボールを用いることも可能である。In the above embodiments, an example in which microcapsules containing electrophoretic particles are used has been described. However, the present invention is not limited to this, and at least two types of color regions whose surfaces are covered with a dielectric liquid. It is also possible to use rotating particles having a so-called twist ball.
【００５１】[0051]
【発明の効果】以上、詳細に説明したように、本発明に
よると、電界の印加により移動または回転する粒子を分
散媒中に分散した表示体を基板間に配置するとともに、
一方の基板上にカラーフィルタを形成することにより、
高精細で、高い画像品位の多色表示を実現することが可
能な多色表示パネルが提供される。As described above in detail, according to the present invention, the display body in which the particles that move or rotate by the application of the electric field are dispersed in the dispersion medium is arranged between the substrates, and
By forming a color filter on one substrate,
Provided is a multicolor display panel capable of realizing multicolor display with high definition and high image quality.
【図１】本発明の一実施形態に係る多色表示パネルの構
成を示す断面図。FIG. 1 is a sectional view showing a configuration of a multicolor display panel according to an embodiment of the present invention.
【図２】本発明の他の実施形態に係る多色表示パネルの
構成を示す断面図。FIG. 2 is a sectional view showing the configuration of a multicolor display panel according to another embodiment of the present invention.
【図３】図１に示す多色表示パネルのカラーフィルタの
パターン形状を示す上面図。FIG. 3 is a top view showing a pattern shape of a color filter of the multicolor display panel shown in FIG.
【図４】図２に示す多色表示パネルのカラーフィルタの
パターン形状を示す上面図。FIG. 4 is a top view showing a pattern shape of a color filter of the multicolor display panel shown in FIG.
【図５】本発明の更に他の実施形態に係る多色表示パネ
ルのカラーフィルタのパターン形状を示す上面図。FIG. 5 is a top view showing a pattern shape of a color filter of a multicolor display panel according to still another embodiment of the present invention.
１・・・透明ガラス基板
２・・・画素電極
３・・・透明電極
４・・・透明ガラス基板
１１・・・透明分散媒
１２・・・白色粒子
１３・・・黒色粒子
１４・・・黒色粒子と白色粒子を封入したマイクロカプセ
ル
１５・・・バインダ材
１６・・・マイクロカプセル層
２４・・・ポリエチレンテレフタラート基材
１００・・・表示パネル
１１１・・・赤色パターン
１１２・・・緑色パターン
１１３・・・青色パターン
２００・・・表示パネル
２１１・・・赤色パターン
２１２・・緑色パターン
２１３・・・青色パターン
２１４・・・白色パターン
３１１・・・赤色パターン
３１２・・・緑色パターン
３１３・・・青色パターン
３１４・・・無着色領域1 ... Transparent glass substrate 2 ... Pixel electrode 3 ... Transparent electrode 4 ... Transparent glass substrate 11 ... Transparent dispersion medium 12 ... White particles 13 ... Black particles 14 ... Black Microcapsules 15 enclosing particles and white particles ... Binder material 16 ... Microcapsule layer 24 ... Polyethylene terephthalate substrate 100 ... Display panel 111 ... Red pattern 112 ... Green pattern 113・ ・ ・ Blue pattern 200 ・ ・ ・ Display panel 211 ・ ・ ・ Red pattern 212 ・ ・ ・ Green pattern 213 ・ ・ ・ Blue pattern 214 ・ ・ ・ White pattern 311 ・ ・ ・ Red pattern 312 ・ ・ ・ Green pattern 313 ・ ・ ・Blue pattern 314 ... Uncolored area
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大江 靖 東京都台東区台東１丁目５番１号 凸版印 刷株式会社内 (72)発明者 鈴木 克宏 東京都台東区台東１丁目５番１号 凸版印 刷株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yasushi Oe 1-5-1 Taito, Taito-ku, Tokyo Toppan stamp Imprint Co., Ltd. (72) Inventor Katsuhiro Suzuki 1-5-1 Taito, Taito-ku, Tokyo Toppan stamp Imprint Co., Ltd.
Claims (8)
電界の印加により移動または回転する粒子を含む表示体
を配置した多色表示パネルにおいて、前記一対の基板の
少なくとも一方の透明な基板上に、カラーフィルタを形
成したことを特徴とする多色表示パネル。1. A pair of substrates, at least one of which is transparent,
In a multicolor display panel in which a display body containing particles that move or rotate by application of an electric field is arranged, a color filter is formed on at least one transparent substrate of the pair of substrates. .
分散させて封入したマイクロカプセルであることを特徴
とする請求項１に記載の多色表示パネル。2. The multicolor display panel according to claim 1, wherein the display body is a microcapsule in which electrophoretic particles are dispersed and enclosed in a dispersion medium.
気泳動粒子とを透明分散媒中に分散させて封入したマイ
クロカプセルであることを特徴とする請求項１または２
に記載の多色表示パネル。3. The display body is a microcapsule in which white electrophoretic particles and black electrophoretic particles are dispersed and enclosed in a transparent dispersion medium.
The multicolor display panel described in.
た、白色および黒色の表面領域を有する回転粒子である
ことを特徴とする請求項１に記載の多色表示パネル。4. The multicolor display panel according to claim 1, wherein the display member is a rotating particle that has white and black surface regions and is encapsulated in a dielectric liquid.
と白色パターンを含むことを特徴とする請求項１〜４の
いずれかの項に記載の多色表示パネル。5. The multicolor display panel according to claim 1, wherein the color filter includes a plurality of colored patterns and a white pattern.
色パターンのうち、最も面積が小さいものと同一又はそ
れよりも小さいことを特徴とする請求項５に記載の多色
表示パネル。6. The multicolor display panel according to claim 5, wherein the area of the white pattern is the same as or smaller than the smallest area of the plurality of colored patterns.
と無着色領域を含むことを特徴とする請求項１〜４のい
ずれかの項に記載の多色表示パネル。7. The multicolor display panel according to claim 1, wherein the color filter includes a plurality of colored patterns and a non-colored area.
パターンのうち、最も面積が小さいものと同一又はそれ
よりも小さいことを特徴とする請求項７に記載の多色表
示パネル。8. The multicolor display panel according to claim 7, wherein the area of the non-colored region is the same as or smaller than the smallest area of the plurality of colored patterns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001358232A JP2003161964A (en) | 2001-11-22 | 2001-11-22 | Multicolor display panel |
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