JPH095755A - Color liquid crystal display element - Google Patents

Color liquid crystal display element

Info

Publication number
JPH095755A
JPH095755A JP7147084A JP14708495A JPH095755A JP H095755 A JPH095755 A JP H095755A JP 7147084 A JP7147084 A JP 7147084A JP 14708495 A JP14708495 A JP 14708495A JP H095755 A JPH095755 A JP H095755A
Authority
JP
Japan
Prior art keywords
liquid crystal
black matrix
crystal display
intersection
spacers
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
Application number
JP7147084A
Other languages
Japanese (ja)
Inventor
Nobuhiro Takeda
伸宏 武田
Kazuyuki Funahata
一行 舟幡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7147084A priority Critical patent/JPH095755A/en
Publication of JPH095755A publication Critical patent/JPH095755A/en
Pending legal-status Critical Current

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  • Liquid Crystal (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

PURPOSE: To increase contrast and to enhance the uniformity within the plane of display by widening the intersected point parts of a points. CONSTITUTION: The intersected points of the grid-like black matrix of a supertwisted nematic type color liquid crystal display element formed by holding liquid crystals with electrode substrates arranged with color filters on one thereof are widened to a circular or elliptic shape and the spacers 2 are arranged at these intersected points. For example, the black matrix 1 of the display element of a display scale 640(X3)×480 pixels is arranged to a grid form at a width of 30μm and pitch of 100μm in a longitudinal direction and at a width of 30μm and a pitch of 300μm in a transverse direction. The intersected points are widened to the circular shape and the spacers 2 are arranged in these parts by screen printing, etc. As a result, the light leakage by the spacers 2 and the adhesives 3 for fixing these spacers and the light leakage by the disturbance in the orientation of the liquid crystals which occurs around these parts are lessened.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は小型のワードプロセッ
サ,パーソナルコンピュータに使用されるスーパー・ツ
イステッド・ネマチック型(以下STN型)カラー液晶
表示素子に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a super twisted nematic type (hereinafter referred to as STN type) color liquid crystal display element used in a compact word processor or personal computer.

【0002】[0002]

【従来の技術】従来のSTN型白黒及びカラー液晶表示
素子では、特開平5−303102 号にフレクシャー印刷及び
スクリーン印刷法によるブラックマトリクス上へスペー
サの印刷などが提案されている。
2. Description of the Related Art For conventional STN type black and white and color liquid crystal display elements, JP-A-5-303102 proposes printing of spacers on a black matrix by flexure printing and screen printing.

【0003】[0003]

【発明が解決しようとする課題】しかし、遮光層の交差
部にスペーサを配置するだけでは、スペーサ及びスペー
サを固定するための接着剤により液晶の配向が乱れこれ
らの周囲にわたり光漏れになる。そして、光漏れにより
表示の輝度が上昇する。特に黒表示の場合は画素の表示
輝度が小さいために光漏れの影響によりコントラスト比
の低下となる。また、光漏れが表示面内で不均一である
ため、特に黒表示で表示むらがおこる。
However, if the spacers are arranged only at the intersections of the light shielding layers, the alignment of the liquid crystal is disturbed by the spacers and the adhesive for fixing the spacers, and light leaks around them. Then, the leakage of light increases the brightness of the display. Particularly in the case of black display, the display luminance of the pixel is small, and the contrast ratio is lowered due to the influence of light leakage. Further, since the light leakage is non-uniform on the display surface, display unevenness occurs particularly in black display.

【0004】本発明の目的は、コントラストが高く、表
示の面内均一性が高いカラー液晶表示素子を提供するこ
とにある。
An object of the present invention is to provide a color liquid crystal display device having high contrast and high in-plane uniformity of display.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するた
め、本発明は、ブラックマトリクスの交点を円形または
四角形を重ねた形状にし、交点部分にスペーサを配置し
た。
In order to achieve the above object, in the present invention, the intersections of the black matrix are formed in a shape in which circles or squares are overlapped, and spacers are arranged at the intersections.

【0006】[0006]

【作用】交点部分を円形または四角形を重ねた形状にし
て、面積を広げたため、ここからの光もれが低減してコ
ントラストが高く、面内で表示が均一になる。
Since the intersections are formed in a shape in which circles or squares are overlapped and the area is widened, light leakage from here is reduced, the contrast is high, and the display is uniform in the plane.

【0007】[0007]

【実施例】本実施例では表示規模640(×3)×48
0画素(画素ピッチ:0.3mm×0.3mm,画素サイズ:
0.3mm×0.3mm,ドットサイズ:0.27mm×0.27m
m,画面対角サイズ:9.4 インチ)の表示素子につい
て、図面を用いて詳細に説明する。
EXAMPLE In this example, the display scale is 640 (× 3) × 48.
0 pixels (pixel pitch: 0.3 mm × 0.3 mm, pixel size:
0.3mm × 0.3mm, dot size: 0.27mm × 0.27m
A display element of m, screen diagonal size: 9.4 inches) will be described in detail with reference to the drawings.

【0008】(実施例1)図1に本発明によるブラック
マトリクスの平面図を示す。同図に示すブラックマトリ
クス1は縦方向に幅30μmでピッチ100μm、横方
向に幅30μm,ピッチ300μm、で格子状に配置し
た。これにより隣り合う透明電極間の間隙での光漏れと
隣り合うカラーフィルタの混色を遮光することにより黒
表示輝度が低減し、コントラスト比が向上する。このブ
ラックマトリクス1の交点部分を円形の形状に広げ、こ
の部分にスクリーン印刷またはフレクシャー印刷でスペ
ーサを配置することにより、スペーサ2とスペーサを固
定するための接着剤3による光漏れとこれらの周辺で発
生する液晶の配向の乱れによる光漏れを低減することに
より、黒表示輝度が低減し、コントラスト比が向上す
る。
(Embodiment 1) FIG. 1 shows a plan view of a black matrix according to the present invention. The black matrix 1 shown in the same figure is arranged in a grid pattern with a width of 30 μm in the vertical direction and a pitch of 100 μm, and a width of 30 μm in the horizontal direction and a pitch of 300 μm. As a result, light leakage in the gap between the transparent electrodes adjacent to each other and the color mixture of the adjacent color filters are shielded to reduce the black display brightness and improve the contrast ratio. By spreading the intersection of the black matrix 1 into a circular shape and arranging a spacer on this portion by screen printing or flexure printing, light leakage due to the spacer 2 and the adhesive 3 for fixing the spacer and the surrounding area By reducing the light leakage due to the disordered alignment of the generated liquid crystal, the black display brightness is reduced and the contrast ratio is improved.

【0009】(実施例2)図2に本発明の第二の実施例
のブラックマトリクスの平面図を示す。同図に示すブラ
ックマトリクス1は縦方向に幅30μmでピッチ100
μm,横方向に幅30μmでピッチ300μm、で格子
状に配置した。このブラックマトリクスの交点部分に一
辺の長さが40〜100μmである正方形で各辺がブラ
ックマトリクスとなす角度が45度で有り、それぞれの
角がブラックマトリクス1のストライプ方向と同方向に
重なる形状にし、この交点部分にスクリーン印刷または
フレクシャー印刷でスペーサ2を接着剤3で固定して配
置することにより、簡略な構造のブラックマトリクス1
の形状でスペーサ2とスペーサを固定するための接着剤
3による光漏れとこれらの周辺で発生する液晶の配向の
乱れによる光漏れを低減させることができ、黒表示輝度
が低減し、コントラスト比が向上する。
(Embodiment 2) FIG. 2 shows a plan view of a black matrix according to a second embodiment of the present invention. The black matrix 1 shown in the figure has a width of 30 μm and a pitch of 100 in the vertical direction.
μm, the width was 30 μm in the lateral direction, and the pitch was 300 μm. At the intersection of the black matrix, a square having a side length of 40 to 100 μm is formed, and each side forms an angle of 45 degrees with the black matrix, and each corner overlaps in the same direction as the stripe direction of the black matrix 1. The black matrix 1 having a simple structure is obtained by arranging the spacers 2 at the intersections by screen printing or flexure printing while fixing them with the adhesive 3.
In this shape, it is possible to reduce the light leakage due to the spacer 2 and the adhesive 3 for fixing the spacer and the light leakage due to the disorder of the alignment of the liquid crystal generated around these, thereby reducing the black display luminance and reducing the contrast ratio. improves.

【0010】(実施例3)図3に本発明の第三実施例の
ブラックマトリクスの平面図を示す。同図に示すブラッ
クマトリクス1は縦方向に幅30μm,ピッチ100μ
m、横方向に幅30〜100μm、ピッチ300μm、
の格子状に配置した。このブラックマトリクスの交点部
分にスクリーン印刷またはフレクシャー印刷でスペーサ
を配置することにより、簡略な構造のブラックマトリク
スでスペーサ2とスペーサを固定するための接着剤3に
よる光漏れとこれらの周辺で発生する液晶の配向の乱れ
による光漏れを低減させることができ、黒表示輝度が低
減し、コントラスト比が向上する。
(Embodiment 3) FIG. 3 shows a plan view of a black matrix according to a third embodiment of the present invention. The black matrix 1 shown in the figure has a width of 30 μm and a pitch of 100 μ in the vertical direction.
m, width 30 to 100 μm in the lateral direction, pitch 300 μm,
Arranged in a grid pattern. By arranging the spacers at the intersections of the black matrix by screen printing or flexure printing, light leakage due to the spacer 2 and the adhesive 3 for fixing the spacers with the black matrix having a simple structure and liquid crystal generated around these It is possible to reduce the light leakage due to the disorder of the orientation, the black display brightness is reduced, and the contrast ratio is improved.

【0011】図4に実施例1〜3の本発明による液晶表
示素子の断面図を示す。同図に示すように、信号側電極
基板(ソーダライムガラス、厚さ:0.7mm )6に信号
側透明電極(ITO、シート抵抗:15Ω/□)7,配
向膜(ポリイミド系樹脂、厚さ:0.07〜0.13μ
m)8を配置し、走査側電極基板(ソーダライムガラ
ス、厚さ:0.7mm)12には、ブラックマトリクス(顔
料型、厚さ:0.7〜1.3μm)1,カラーフィルタ
(顔料型、厚さ:1.5〜2.5μm)11,平坦化膜
(エポキシ系樹脂、厚さ:0.07〜0.13μm)、走
査側透明電極(ITO、シート抵抗:15Ω/□)1
0,配向膜(ポリイミド系樹脂、厚さ:0.07〜0.1
3μm )8を配置して、この上下の電極基板にスペー
サ2を接着剤3で固定して配置することにより、液晶の
厚さを一定にして挟持した。これらの透明電極基板6,
12の外側にそれぞれ上側位相差板5,上側偏光板4,
下側位相差板13,下側偏光板14を配置した。
FIG. 4 shows a cross-sectional view of the liquid crystal display element according to the present invention of Examples 1-3. As shown in the figure, on the signal side electrode substrate (soda lime glass, thickness: 0.7 mm) 6, the signal side transparent electrode (ITO, sheet resistance: 15Ω / □) 7, alignment film (polyimide resin, thickness) : 0.07 to 0.13μ
m) 8 are arranged, and the scanning side electrode substrate (soda lime glass, thickness: 0.7 mm) 12 has a black matrix (pigment type, thickness: 0.7 to 1.3 μm) 1, a color filter (pigment). Mold, thickness: 1.5 to 2.5 μm) 11, flattening film (epoxy resin, thickness: 0.07 to 0.13 μm), scanning side transparent electrode (ITO, sheet resistance: 15 Ω / □) 1
0, alignment film (polyimide resin, thickness: 0.07 to 0.1)
3 μm) 8 is arranged, and the spacers 2 are fixed and arranged on the upper and lower electrode substrates with the adhesive 3, so that the liquid crystal is sandwiched with a constant thickness. These transparent electrode substrates 6,
The upper retardation plate 5, the upper polarization plate 4, and
The lower retardation plate 13 and the lower polarizing plate 14 were arranged.

【0012】図5に実施例1〜3に示す、本発明による
ブラックマトリクスの交点部分の形状と開口率の関係を
示す。ブラックマトリクス交点の形状はスペーサ2と接
着剤3による光漏れの大きさとスペーサ2の印刷位置精
度を考慮すると、大きな範囲を遮光する必要がある。し
かし、交点形状を大きくすることは開口率の低下とな
り、表示輝度が低下するためにバックライトの消費電力
が大きくなるなど問題がある。同図に示す交点部分を円
形にしたブラックマトリクスの開口率15は実施例1で
示したブラックマトリクス1の縦横の線幅がどちらも3
0μmである場合の交点部分の円の半径との関係であ
る。この場合の開口率は交点部分の半径の大きさにあま
り影響されない。同図に示す交点部分を正方形にしたブ
ラックマトリクスの開口率16は実施例2で示したブラ
ックマトリクス1の縦横の線幅がどちらも30μmであ
る場合の交点部分の正方形に内接する円の半径との関係
である。この場合の開口率は交点部分の半径の大きさに
あまり影響されず、円形にした場合とほぼ同じである。
しかも、円形と比べ形状が単純であるためパターン形成
に有利である。同図に示す交点部分を正方形にしたブラ
ックマトリクスの開口率17は実施例3で示したブラッ
クマトリクス1の縦方向の線幅が30μmであり、横方
向の線幅を広げた場合の交点部分に内接する円の半径と
の関係である。この場合の開口率は交点部分の半径の大
きさの影響は、交点部分を円形または正方形にした場合
と比べ10%ほど開口率が低下するが、形状が単純であ
るためパターン形成に有利である。
FIG. 5 shows the relationship between the shape of the intersections of the black matrix according to the present invention and the aperture ratio shown in Examples 1 to 3. Considering the size of light leakage due to the spacer 2 and the adhesive 3 and the printing position accuracy of the spacer 2, the shape of the black matrix intersection point needs to shield light in a large range. However, increasing the shape of the intersection causes a reduction in the aperture ratio, which causes a reduction in display brightness, which causes a problem that the power consumption of the backlight increases. The aperture ratio 15 of the black matrix in which the intersections are circular as shown in the figure is 3 in both the vertical and horizontal line widths of the black matrix 1 shown in the first embodiment.
This is the relationship with the radius of the circle at the intersection when it is 0 μm. The aperture ratio in this case is not so much affected by the size of the radius of the intersection. The aperture ratio 16 of the black matrix in which the intersections are square shown in the figure is the radius of the circle inscribed in the squares of the intersections when the vertical and horizontal line widths of the black matrix 1 shown in the second embodiment are both 30 μm. Relationship. In this case, the aperture ratio is not much affected by the size of the radius of the intersection point, and is almost the same as the case of forming a circle.
Moreover, the shape is simpler than that of a circle, which is advantageous for pattern formation. The aperture ratio 17 of the black matrix in which the intersections shown in the figure are square is that the line width in the vertical direction of the black matrix 1 shown in the third embodiment is 30 μm. It is the relationship with the radius of the inscribed circle. The aperture ratio in this case is affected by the size of the radius of the intersection, and the aperture ratio is reduced by about 10% as compared with the case where the intersection is circular or square, but the shape is simple, which is advantageous for pattern formation. .

【0013】[0013]

【発明の効果】本発明によれば、ブラックマトリクスの
交点を円形または四角形にすることにより、スペーサ2
やスペーサの接着剤3などによる光漏れがブラックスト
ライプ交点部分で遮光される。また、光漏れによるコン
トラスト比の低下や表示むらを低減することができる。
According to the present invention, the spacer 2 is formed by forming the intersection of the black matrix into a circle or a quadrangle.
Light leakage due to the adhesive 3 of the spacers or the like is blocked at the intersections of the black stripes. In addition, it is possible to reduce the decrease in contrast ratio and display unevenness due to light leakage.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例のブラックマトリクスの平面
図。
FIG. 1 is a plan view of a black matrix according to an embodiment of the present invention.

【図2】本発明の第二実施例ブラックマトリクスの平面
図。
FIG. 2 is a plan view of a black matrix according to a second embodiment of the present invention.

【図3】本発明の第三実施例のブラックマトリクスの平
面図。
FIG. 3 is a plan view of a black matrix according to a third embodiment of the present invention.

【図4】本発明の液晶表示素子の断面図。FIG. 4 is a sectional view of a liquid crystal display element of the present invention.

【図5】本発明のブラックマトリクスの形状と開口率の
関係を示す特性図。
FIG. 5 is a characteristic diagram showing the relationship between the shape of the black matrix of the present invention and the aperture ratio.

【符号の説明】[Explanation of symbols]

1…ブラックマトリクス、2…スペーサ、3…接着剤。 1 ... Black matrix, 2 ... Spacer, 3 ... Adhesive.

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】液晶表示素子として、一方にカラーフィル
タを配置した電極基板で液晶を挟持したスーパー・ツイ
ステッド・ネマチック型カラー液晶表示素子において、
格子上のブラックマトリクスの交点部分を広げて、前記
交点部分にスペーサを配置することを特徴とするカラー
液晶表示素子。
1. A liquid crystal display device comprising a super twisted nematic type color liquid crystal display device in which a liquid crystal is sandwiched between electrode substrates having a color filter arranged on one side,
A color liquid crystal display device, characterized in that an intersection part of a black matrix on a lattice is widened and a spacer is arranged at the intersection part.
【請求項2】請求項1において、前記ブラックマトリク
スの交点を円形または楕円形に広げて、前記交点部分に
前記スペーサを配置するカラー液晶表示素子。
2. The color liquid crystal display element according to claim 1, wherein the intersection of the black matrix is expanded into a circle or an ellipse, and the spacer is arranged at the intersection.
【請求項3】請求項1または2において、前記ブラック
マトリクスの交点部分の形状を半径20〜50μmの円
形または楕円に広げて、その前記交点部分に前記スペー
サを配置するカラー液晶表示素子。
3. The color liquid crystal display device according to claim 1, wherein the shape of the intersection of the black matrix is expanded into a circle or an ellipse having a radius of 20 to 50 μm, and the spacer is arranged at the intersection.
【請求項4】請求項1において、前記ブラックマトリク
スの交点部分を四角形に広げて、前記交点部分に前記ス
ペーサを配置するカラー液晶表示素子。
4. The color liquid crystal display element according to claim 1, wherein the intersections of the black matrix are expanded into a quadrangle, and the spacers are arranged at the intersections.
【請求項5】請求項1または4において、画素間に配置
した前記ブラックマトリクスの交点部分の形状を直径2
0〜50μmの円または楕円が内接する四角形にしたカ
ラー液晶表示素子。
5. The shape of an intersection point of the black matrix arranged between pixels according to claim 1 or 4, having a diameter of 2 mm.
A color liquid crystal display device in the form of a quadrangle inscribed with a circle or an ellipse of 0 to 50 μm.
【請求項6】一方にカラーフィルタを配置した電極基板
で液晶を挟持したスーパー・ツイステッド・ネマチック
型カラー液晶表示素子において、格子上のブラックマト
リクスの交点を広げて、その交点部分にスペーサを配置
することを特徴とした液晶表示素子。
6. In a super twisted nematic type color liquid crystal display device in which a liquid crystal is sandwiched between electrode substrates having a color filter arranged on one side, the intersection of the black matrix on the lattice is widened and a spacer is arranged at the intersection. A liquid crystal display device characterized by the above.
【請求項7】請求項6において、前記格子上のブラック
マトリクスの横方向の線幅を広げて、前記交点部分にス
ペーサを配置するカラー液晶表示素子。
7. The color liquid crystal display device according to claim 6, wherein a horizontal line width of the black matrix on the grid is widened and a spacer is arranged at the intersection.
JP7147084A 1995-06-14 1995-06-14 Color liquid crystal display element Pending JPH095755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7147084A JPH095755A (en) 1995-06-14 1995-06-14 Color liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7147084A JPH095755A (en) 1995-06-14 1995-06-14 Color liquid crystal display element

Publications (1)

Publication Number Publication Date
JPH095755A true JPH095755A (en) 1997-01-10

Family

ID=15422114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7147084A Pending JPH095755A (en) 1995-06-14 1995-06-14 Color liquid crystal display element

Country Status (1)

Country Link
JP (1) JPH095755A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000227598A (en) * 1999-02-05 2000-08-15 Hitachi Ltd Liquid crystal display device
US6577373B1 (en) * 1997-06-13 2003-06-10 Sekisui Chemical Co., Ltd. Liquid crystal display and method of manufacturing the same
US7223817B2 (en) 1998-09-02 2007-05-29 Kaneka Corporation Polymer, processes for producing polymer and composition
CN104407475A (en) * 2014-12-04 2015-03-11 厦门天马微电子有限公司 Liquid crystal display panel
CN107179633A (en) * 2016-03-11 2017-09-19 株式会社日本显示器 Liquid crystal display device
WO2020073384A1 (en) * 2018-10-08 2020-04-16 深圳市华星光电半导体显示技术有限公司 Liquid crystal display panel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577373B1 (en) * 1997-06-13 2003-06-10 Sekisui Chemical Co., Ltd. Liquid crystal display and method of manufacturing the same
US7223817B2 (en) 1998-09-02 2007-05-29 Kaneka Corporation Polymer, processes for producing polymer and composition
JP2000227598A (en) * 1999-02-05 2000-08-15 Hitachi Ltd Liquid crystal display device
CN104407475A (en) * 2014-12-04 2015-03-11 厦门天马微电子有限公司 Liquid crystal display panel
CN107179633A (en) * 2016-03-11 2017-09-19 株式会社日本显示器 Liquid crystal display device
CN107179633B (en) * 2016-03-11 2020-10-09 株式会社日本显示器 Liquid crystal display device having a plurality of pixel electrodes
WO2020073384A1 (en) * 2018-10-08 2020-04-16 深圳市华星光电半导体显示技术有限公司 Liquid crystal display panel

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