JPH11248930A - Color filter substrate and manufacture thereof, and liquid crystal display element using same color filter substrate - Google Patents
Color filter substrate and manufacture thereof, and liquid crystal display element using same color filter substrateInfo
- Publication number
- JPH11248930A JPH11248930A JP5536698A JP5536698A JPH11248930A JP H11248930 A JPH11248930 A JP H11248930A JP 5536698 A JP5536698 A JP 5536698A JP 5536698 A JP5536698 A JP 5536698A JP H11248930 A JPH11248930 A JP H11248930A
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- JP
- Japan
- Prior art keywords
- color filter
- filter substrate
- liquid crystal
- crystal display
- center
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はカラーフィルター基
板、そのカラーフィルター基板の製造方法及びそのカラ
ーフィルター基板を用いた液晶表示素子に関するもので
あり、映像表示機器，パーソナルコンピュータやワード
プロセッサなどのＯＡ機器、産業分野のハンディ端末機
器，携帯型情報通信機器などに用いられるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter substrate, a method of manufacturing the color filter substrate, and a liquid crystal display device using the color filter substrate. The present invention relates to an image display device, an OA device such as a personal computer or a word processor, It is used for handy terminal equipment and portable information communication equipment in the industrial field.
【０００２】[0002]
【従来の技術】現在、フラットパネルディスプレイとし
て、液晶・プラズマ・ＥＬディスプレイが実用化され、
その用途も幅広いものとなってきている。2. Description of the Related Art At present, liquid crystal, plasma and EL displays have been put into practical use as flat panel displays.
Its applications are becoming widespread.
【０００３】例えば、液晶表示素子はＣＲＴに比べて、
画面サイズ，画素数において劣っており、その反面、重
量や体積において携帯性に優れた製品分野に位置するこ
とができた。現在ではノート型パソコンやワープロで用
いられている液晶表示素子として、１０〜１２インチサ
イズ程度で６４０×４８０ドット、又は６００×８００
ドットの画素数が用意されており、ＣＲＴの画素数には
劣るがディスプレイとして優れた表示を示すことができ
る。For example, a liquid crystal display device is more
Although the screen size and the number of pixels were inferior, on the other hand, it could be positioned in a product field with excellent portability in weight and volume. At present, as a liquid crystal display element used in a notebook computer or a word processor, a size of about 10 to 12 inches is 640 × 480 dots or 600 × 800.
The number of pixels of the dot is prepared, and although the number of pixels of the CRT is inferior, an excellent display as a display can be shown.
【０００４】図６はこのような従来例の単純マトリクス
型のカラーＳＴＮ液晶表示素子の構成を示す断面図であ
る。FIG. 6 is a sectional view showing the structure of such a conventional simple matrix type color STN liquid crystal display device.
【０００５】図６において、電極基板１０の上に表示電
極６が順に形成されている。対向するカラーフィルター
基板１上にカラーフィルタ層２，遮光層３、その上に平
滑性を得るために有機物から成る透明樹脂層４を設け、
さらに表示電極６を順に形成して、これら表示電極６上
に配向膜層７が構成される。このように構成した電極基
板はスペーサ１３を介し、少なくとも一方の基板の周辺
に印刷されたシール材１２で電極基板間のギャップを一
定に保つように接着されており、そのギャップ中に液晶
１１を封入してカラー液晶表示素子を構成している。In FIG. 6, display electrodes 6 are sequentially formed on an electrode substrate 10. A color filter layer 2, a light shielding layer 3, and a transparent resin layer 4 made of an organic material are provided on the opposing color filter substrate 1 to obtain smoothness;
Further, display electrodes 6 are sequentially formed, and an alignment film layer 7 is formed on these display electrodes 6. The electrode substrate thus configured is bonded via a spacer 13 with a sealing material 12 printed around at least one of the substrates so as to keep the gap between the electrode substrates constant, and the liquid crystal 11 is filled in the gap. Enclosed to form a color liquid crystal display element.
【０００６】今後、ＳＴＮでは１２型から１７型の画面
サイズが考えられており、表示容量もＳＶＧＡからＸＧ
Ａ，ＳＸＧＡなどもＣＲＴ代替モニターとして注目さ
れ、その表示品位も従来に比べ高いレベルが要求されて
きており、その製造方法もいろいろ検討がなされてい
る。[0006] In the future, STN is considering screen sizes of 12 to 17 inches, and the display capacity is also changed from SVGA to XG.
A, SXGA, etc. have also attracted attention as CRT replacement monitors, and their display quality has been required to be higher than in the past, and various manufacturing methods have been studied.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、従来の
ようなスペーサ１３を介し基板（１と１０）間のギャッ
プが保たれているような液晶表示素子では、スペーサ１
３周辺の配向状態がスペーサの無い部分と異なるため
に、黒表示をする際にスペーサ１３周辺で光り抜け現象
を生じ表示品位の指標となるコントラスト比を低下させ
る要因となっていた。この問題を解決する手段として、
例えば、図７の特開平８−２９２４２６号公報に開示さ
れている液晶表示素子の構成を示す断面図のようにスペ
ーサ１３の代わりに遮光層３上に突起５を形成し、光漏
れを低減するという液晶表示素子が提案されている。However, in a conventional liquid crystal display device in which the gap between the substrates (1 and 10) is maintained via the spacer 13, the spacer 1
Since the alignment state around 3 is different from that without the spacer, a light leakage phenomenon occurs around the spacer 13 during black display, which causes a reduction in the contrast ratio which is an index of display quality. As a solution to this problem,
For example, protrusions 5 are formed on the light shielding layer 3 instead of the spacers 13 as shown in the cross-sectional view of the configuration of the liquid crystal display element disclosed in Japanese Patent Application Laid-Open No. 8-292426 in FIG. Has been proposed.
【０００８】しかしながら、遮光層３上に突起５を形成
した場合でも、突起周辺に於いて配向異常状態が存在
し、その異常配向領域１４は液晶の配向状態を決定する
ラビング方向に対して依存性を持つ。よって、中間調と
呼ばれる電圧印加の中途状態において突起周辺のラビン
グ出口方向に生じる異常配向領域１４が画素部分まで広
がり、コントラスト比を低下させるという問題があっ
た。However, even when the projections 5 are formed on the light-shielding layer 3, an abnormal alignment state exists around the projections, and the abnormal alignment region 14 depends on the rubbing direction which determines the alignment state of the liquid crystal. have. Therefore, there is a problem that the abnormal alignment region 14 generated in the rubbing exit direction around the protrusion extends to the pixel portion in a halfway state of voltage application called a halftone, and the contrast ratio is reduced.
【０００９】本発明は、以上のような問題点を解決し、
液晶表示素子の基板間のギャップ制御に基板上に形成し
た突起を用いる方法に於いて、表示均一性の高い液晶表
示素子を提供するカラーフィルター基板、そのカラーフ
ィルター基板の製造方法及びそのカラーフィルター基板
を用いる液晶表示素子の提供を目的とするものである。The present invention solves the above problems,
A color filter substrate for providing a liquid crystal display element having high display uniformity in a method of using a projection formed on a substrate to control a gap between substrates of the liquid crystal display element, a method of manufacturing the color filter substrate, and the color filter substrate An object of the present invention is to provide a liquid crystal display device using the same.
【００１０】[0010]
【課題を解決するための手段】本発明は上記目的を達成
するために、複数の着色層からなるカラーフィルター層
と所定の幅からなる遮光層が形成されたカラーフィルタ
ー基板上の遮光層上に樹脂からなる所定の大きさの突起
が形成され、且つ前記突起の中心は前記遮光層の幅方向
の中心と一致しないことを特徴とするカラーフィルター
基板を用いる。According to the present invention, there is provided a light-shielding layer on a color filter substrate on which a color filter layer comprising a plurality of colored layers and a light-shielding layer having a predetermined width are formed. A protrusion having a predetermined size made of resin is formed, and the center of the protrusion does not coincide with the center in the width direction of the light shielding layer.
【００１１】また、配向膜層が形成された上記カラーフ
ィルター基板表面をラビングする製造方法において、突
起の中心から遮光層の中心方向へラビングする。In the method of rubbing the surface of the color filter substrate on which the alignment film layer is formed, rubbing is performed from the center of the projection toward the center of the light shielding layer.
【００１２】また、前記製造方法でラビングされた電極
基板を具備した液晶表示素子を形成するものである。Further, the present invention provides a liquid crystal display device having an electrode substrate rubbed by the above-mentioned manufacturing method.
【００１３】[0013]
【発明の実施の形態】以下、本発明の各実施の形態につ
いて、図１から図６を用いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.
【００１４】（実施の形態１）図１は本発明の実施の形
態１におけるカラーフィルター基板の平面図（ａ）及び
断面図（ｂ）、図２は本発明の実施の形態１におけるラ
ビング方法を示す工程図、図３は本発明の実施の形態１
により作成された液晶表示素子の断面図を示すものであ
る。(Embodiment 1) FIG. 1 is a plan view (a) and a sectional view (b) of a color filter substrate according to Embodiment 1 of the present invention, and FIG. 2 shows a rubbing method according to Embodiment 1 of the present invention. FIG. 3 is a process diagram showing the first embodiment of the present invention.
FIG. 1 is a cross-sectional view of a liquid crystal display element prepared by the method shown in FIG.
【００１５】まず、カラーフィルター基板１上にカラー
フィルター層２、額縁状の遮光層３及びそれらを被覆す
る透明樹脂層４を形成し、さらに表示電極６を形成す
る。さらに遮光層３上に透明樹脂からなる突起５を所定
のパターンに形成し、その位置は遮光層３の幅方向の中
心と一致しないように配置した。その際、突起５はネガ
タイプの感光性透明樹脂を用いフォトリソ法により形成
し、一例として遮光層３の幅２５μｍに対し突起５は１
０μｍ角、高さ５μｍとし、突起５の中心５ａを遮光層
３の幅方向の中心３ａに対し５μｍずらした位置に形成
した。First, a color filter layer 2, a frame-shaped light-shielding layer 3, and a transparent resin layer 4 covering them are formed on a color filter substrate 1, and a display electrode 6 is further formed. Further, projections 5 made of a transparent resin were formed on the light shielding layer 3 in a predetermined pattern, and the positions were arranged so as not to coincide with the center of the light shielding layer 3 in the width direction. At this time, the projections 5 are formed by a photolithography method using a negative type photosensitive transparent resin.
The protrusion 5 was formed at a position shifted by 5 μm from the center 3 a in the width direction of the light-shielding layer 3.
【００１６】次に上記カラーフィルター基板１上に液晶
分子の配向を制御する配向膜層７を形成し、図２に示す
ようにラビングローラ８に貼り付けたレーヨン製のラビ
ング布９（吉川加工ＹＡ−２０Ｒ）を用いて、突起の中
心方向から遮光層の中心方向へとラビングを行った。Next, an alignment film layer 7 for controlling the alignment of liquid crystal molecules is formed on the color filter substrate 1, and as shown in FIG. 2, a rubbing cloth 9 made of rayon (Yoshikawa processing YA) adhered to a rubbing roller 8. Using -20R), rubbing was performed from the center of the protrusion to the center of the light-shielding layer.
【００１７】一方、電極基板１０には、対向する表示電
極６，配向膜層７を形成し、所定のラビング処理を行っ
た。ラビング角度は、一例として液晶のツイスト角が２
４０゜となるように設定した。次に、ギャップ制御用の
ガラスファイバー（図中記載省略）を混入したシール材
１２を形成し、カラーフィルター基板１と電極基板１０
を貼り合わせ、シール材１２を硬化して、液晶パネルを
作成した。On the other hand, the display electrode 6 and the alignment film layer 7 facing each other were formed on the electrode substrate 10, and a predetermined rubbing treatment was performed. The rubbing angle is, for example, 2 twists of the liquid crystal.
It was set to be 40 °. Next, a sealing material 12 mixed with a glass fiber (not shown) for gap control is formed, and the color filter substrate 1 and the electrode substrate 10 are formed.
And the sealing material 12 was cured to prepare a liquid crystal panel.
【００１８】最後に、液晶パネルに液晶１１を注入して
液晶表示素子を作成した。Finally, a liquid crystal 11 was injected into the liquid crystal panel to produce a liquid crystal display device.
【００１９】こうして作成した液晶パネルに電圧を印加
して中間調状態を観察したところ、突起５周辺のラビン
グ出口側では配向異常領域１４が見られるものの、位置
をずらした効果により遮光層３内に収まっており、高コ
ントラストの液晶表示素子が形成されていることが確認
できた。When a voltage was applied to the liquid crystal panel formed in this way and a halftone state was observed, an abnormally-aligned region 14 could be seen at the rubbing exit side around the protrusion 5, but due to the effect of displacing the position, it was found in the light-shielding layer 3. It was confirmed that a high-contrast liquid crystal display element was formed.
【００２０】（実施の形態２）図４は本発明の実施の形
態２におけるラビング方法を示す工程図、図５は本発明
の実施の形態２により作成された液晶表示素子の断面図
を示すものである。(Embodiment 2) FIG. 4 is a process diagram showing a rubbing method according to Embodiment 2 of the present invention, and FIG. 5 is a cross-sectional view of a liquid crystal display device produced according to Embodiment 2 of the present invention. It is.
【００２１】まず、図４（ａ）に示すようにラーフィル
ター基板１上にカラーフィルター層２，遮光層３及びそ
れらを被覆する透明樹脂層４を形成し、さらに表示電極
６，配向膜層７を形成した。First, as shown in FIG. 4A, a color filter layer 2, a light shielding layer 3 and a transparent resin layer 4 covering them are formed on a color filter substrate 1, and further, a display electrode 6, an alignment film layer 7 Was formed.
【００２２】次に、図４（ｂ）に示すようにカラーフィ
ルター基板１の遮光層３上に透明樹脂からなる突起５を
所定のパターンに形成し、その位置は遮光層３の幅方向
の中心と一致しないように配置した。その際、突起５は
ネガタイプの感光性透明樹脂を用いフォトリソ法により
形成し、一例として遮光層の幅２５μｍに対し突起５は
１０μｍ角、高さ５μｍとし、突起の中心を遮光層の幅
方向の中心に対し５μｍずらした位置に形成した。Next, as shown in FIG. 4B, projections 5 made of a transparent resin are formed on the light-shielding layer 3 of the color filter substrate 1 in a predetermined pattern. It was arranged not to match. At this time, the projections 5 are formed by a photolithography method using a negative type photosensitive transparent resin. As an example, the projections 5 are 10 μm square and 5 μm in height with respect to the width of the light shielding layer of 25 μm. It was formed at a position shifted by 5 μm from the center.
【００２３】最後に、カラーフィルター基板１上の配向
膜層７の表面を、ラビングローラ８に貼り付けたレーヨ
ン製のラビング布９（吉川加工ＹＡー２０Ｒ）を用いて
突起の中心方向から遮光層の中心方向へラビングを行っ
た。Finally, the surface of the alignment film layer 7 on the color filter substrate 1 is covered with a rubbing cloth 9 made of rayon (Yoshikawa processing YA-20R) adhered to a rubbing roller 8 from the center of the projection to the light shielding layer. Was rubbed toward the center.
【００２４】一方、図５に示すように電極基板１０に
は、対向する表示電極６，配向膜層７を形成し、所定の
ラビング処理を行った。ラビング角度は、一例として液
晶のツイスト角が２４０゜となるように設定した。次
に、ギャップ制御用のガラスファイバー（図中記載省
略）を混入したシール材１２を形成し、カラーフィルタ
ー基板１と電極基板１０を貼り合わせ、シール材１２を
硬化して、液晶パネルを作成した。On the other hand, as shown in FIG. 5, opposing display electrodes 6 and an alignment film layer 7 were formed on the electrode substrate 10, and a predetermined rubbing treatment was performed. The rubbing angle was set so that, for example, the twist angle of the liquid crystal was 240 °. Next, a sealing material 12 mixed with a glass fiber (not shown in the figure) for gap control was formed, the color filter substrate 1 and the electrode substrate 10 were bonded, and the sealing material 12 was cured to produce a liquid crystal panel. .
【００２５】最後に、液晶パネルに液晶１１を注入して
液晶表示素子を作成した。こうして作成した液晶パネル
に電圧を印加して中間調状態を観察したところ突起周辺
のラビング出口側では配向異常領域１４が見られるもの
の、位置をずらした効果により遮光層３内に収まってお
り、高コントラストの液晶表示素子が形成されているこ
とが確認できた。Finally, the liquid crystal 11 was injected into the liquid crystal panel to produce a liquid crystal display device. When a halftone state was observed by applying a voltage to the liquid crystal panel formed in this way, an abnormal alignment region 14 was found at the rubbing exit side around the protrusion, but the alignment was shifted into the light shielding layer 3 due to the effect of shifting the position. It was confirmed that a liquid crystal display element having a contrast was formed.
【００２６】なお本実施の形態において、カラーフィル
ターの工法について述べていないが、本発明の構成を満
足するものであれば、工法については問わない。In this embodiment, the method of forming a color filter is not described, but any method may be used as long as the structure of the present invention is satisfied.
【００２７】また、本実施の形態において、ラビング角
度が２４０°であり、ＳＴＮモードについて述べている
が、ラビング角度が９０°であるＴＮモードでも同様の
効果が得られる。In this embodiment, the rubbing angle is 240 ° and the STN mode is described. However, the same effect can be obtained in the TN mode where the rubbing angle is 90 °.
【００２８】[0028]
【発明の効果】以上説明したように本発明は、液晶表示
素子の基板間のギャップ制御に基板上に形成した突起を
用いる方法に於いて、遮光層上に形成する突起の位置を
遮光層の中心よりずらし、かつラビング方向を特定する
ことで突起周辺に生じる異常配向の影響を少なくするこ
とができるので、表示均一性の高い液晶表示素子を提供
できる。As described above, the present invention relates to a method of using a projection formed on a substrate for controlling a gap between substrates of a liquid crystal display element. By offsetting from the center and specifying the rubbing direction, it is possible to reduce the influence of abnormal alignment generated around the protrusion, so that a liquid crystal display element with high display uniformity can be provided.
【図１】本発明の実施の形態１におけるカラーフィルタ
ー基板の平面図（ａ）と断面図（ｂ）FIG. 1 is a plan view (a) and a cross-sectional view (b) of a color filter substrate according to Embodiment 1 of the present invention.
【図２】本発明の実施の形態１におけるラビング方法を
示す工程図FIG. 2 is a process chart showing a rubbing method according to the first embodiment of the present invention.
【図３】本発明の実施の形態１における液晶表示素子の
断面図FIG. 3 is a cross-sectional view of the liquid crystal display element according to Embodiment 1 of the present invention.
【図４】本発明の実施の形態２におけるラビング方法を
示す工程図FIG. 4 is a process chart showing a rubbing method according to a second embodiment of the present invention.
【図５】本発明の実施の形態２における液晶表示素子の
断面図FIG. 5 is a sectional view of a liquid crystal display element according to Embodiment 2 of the present invention.
【図６】従来の液晶表示素子の構成を示す断面図FIG. 6 is a cross-sectional view illustrating a configuration of a conventional liquid crystal display element.
【図７】従来の液晶表示素子の他の構成を示す断面図FIG. 7 is a sectional view showing another configuration of a conventional liquid crystal display element.
１ カラーフィルター基板 ２ カラーフィルター層 ３ 遮光層 ４ 透明樹脂層 ５ 突起 ６ 表示電極 ７ 配向膜層 ８ ラビングローラ ９ ラビング布 １０ 電極基板 １１ 液晶 １２ シール材 １３ スペーサ １４ 異常配向領域 Reference Signs List 1 color filter substrate 2 color filter layer 3 light shielding layer 4 transparent resin layer 5 projection 6 display electrode 7 alignment film layer 8 rubbing roller 9 rubbing cloth 10 electrode substrate 11 liquid crystal 12 sealing material 13 spacer 14 abnormal alignment area
Claims (4)
層と所定の幅からなる複数の遮光層が形成されたカラー
フィルター基板上の遮光層上に、樹脂からなる所定の大
きさの複数の突起が形成され、且つ前記突起の中心は前
記遮光層の幅方向の中心と一致しないことを特徴とする
カラーフィルター基板。1. A plurality of projections of a predetermined size made of resin are formed on a light-shielding layer on a color filter substrate on which a color filter layer having a plurality of coloring layers and a plurality of light-shielding layers having a predetermined width are formed. A color filter substrate formed, wherein the center of the protrusion does not coincide with the center in the width direction of the light shielding layer.
ラーフィルター基板表面をラビングする製造方法におい
て、突起の中心から遮光層の中心方向へラビングするこ
とを特徴とするカラーフィルター基板の製造方法。2. The method of manufacturing a color filter substrate according to claim 1, wherein the alignment film layer is formed, wherein the rubbing is performed from the center of the projection toward the center of the light-shielding layer. Method.
たカラーフィルター基板を具備することを特徴とする液
晶表示素子。3. A liquid crystal display device comprising a color filter substrate produced by the method according to claim 2.
も小さいことを特徴とする請求項１記載のカラーフィル
ター基板。4. The color filter substrate according to claim 1, wherein the size of the protrusion in the width direction is smaller than the width of the light shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5536698A JPH11248930A (en) | 1998-03-06 | 1998-03-06 | Color filter substrate and manufacture thereof, and liquid crystal display element using same color filter substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5536698A JPH11248930A (en) | 1998-03-06 | 1998-03-06 | Color filter substrate and manufacture thereof, and liquid crystal display element using same color filter substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11248930A true JPH11248930A (en) | 1999-09-17 |
Family
ID=12996498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5536698A Pending JPH11248930A (en) | 1998-03-06 | 1998-03-06 | Color filter substrate and manufacture thereof, and liquid crystal display element using same color filter substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11248930A (en) |
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