JPH071323B2 - Color filter - Google Patents
Color filterInfo
- Publication number
- JPH071323B2 JPH071323B2 JP60158040A JP15804085A JPH071323B2 JP H071323 B2 JPH071323 B2 JP H071323B2 JP 60158040 A JP60158040 A JP 60158040A JP 15804085 A JP15804085 A JP 15804085A JP H071323 B2 JPH071323 B2 JP H071323B2
- Authority
- JP
- Japan
- Prior art keywords
- color
- pixel
- pixel patterns
- color filter
- pattern
- 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.)
- Expired - Lifetime
Links
Landscapes
- Optical Filters (AREA)
- Liquid Crystal (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Color Television Image Signal Generators (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、液晶ディスプレイあるいは撮像素子などに
用いられるカラーフィルタ、特に、隣接する画素パター
ンが境界部に重なりをもつものの改良技術に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter used in a liquid crystal display, an image pickup device, or the like, and more particularly to an improved technique of adjacent pixel patterns having overlapping boundary portions. .
（従来の技術） この種のカラーフィルタは、ガラス板等の基板の一面
に、少なくとも赤、緑、青の３色の画素パターンが周期
性をもってマトリックス状に配列されている。隣接する
画素パターンは互いに色が異なり、各画素パターンは各
色ごとに互いに異なる工程でパターンニングされる。な
お、各画素パターンの形成方法としては、フォトリソグ
ラフィ法、印刷法あるいはパターン転写法などのいくつ
かの方法が利用される。(Prior Art) In this type of color filter, pixel patterns of at least three colors of red, green, and blue are arranged in a matrix with periodicity on one surface of a substrate such as a glass plate. Adjacent pixel patterns have different colors from each other, and each pixel pattern is patterned by a different process for each color. As a method of forming each pixel pattern, several methods such as a photolithography method, a printing method or a pattern transfer method are used.
こうしたカラーフィルタの一つとして、たとえば特開昭
59−204009号公報に示されているように、画素パターン
の境界部に重なりを設けることによって、隣接する画素
パターン間の隙間、いわゆる白抜けをなくし、カラーの
表示特性を向上するようにした技術が知られている。As one of such color filters, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent Laid-Open No. 59-204009, a technique is provided in which a gap between adjacent pixel patterns, that is, a so-called white spot is eliminated by providing an overlap at a boundary portion of the pixel patterns, and a color display characteristic is improved. It has been known.
（発明が解決しようとする問題点） こうした重なりを設けるようにしたカラーフィルタにお
いては、見当合わせおよび画素パターンの精度などを考
慮してその重なりの幅をある程度大きくせざるをえな
い。しかも、隣接する画素パターンは互いに色が異なる
ので、境界部の領域内に３色が重なる箇所が生じてしま
う。このような箇所は３色の画素パターンが積層してい
ることから、単一の画素パターンの厚さの３倍の厚さと
なり、フィルタ表面に部分的に突起を生じ、フィルタ全
体の厚さを増すのみならず、表面の平坦性を低下するこ
とになる。厚いカラーフィルタは液晶ディスプレイ等へ
の組付け上好ましくなく、しかもまた、表面の平坦性の
低下は、各画素パターン上に透明電極あるいはその他の
電気的素子を形成する上でマイナスの要因となる。(Problems to be Solved by the Invention) In a color filter having such an overlap, the width of the overlap must be increased to some extent in consideration of registration, pixel pattern accuracy, and the like. In addition, since the colors of the adjacent pixel patterns are different from each other, a portion where the three colors overlap each other occurs in the boundary area. Since the pixel patterns of three colors are stacked in such a portion, the thickness becomes three times as thick as that of a single pixel pattern, a protrusion is partially generated on the filter surface, and the thickness of the entire filter is reduced. Not only will this increase, but the flatness of the surface will decrease. A thick color filter is not preferable for assembling to a liquid crystal display or the like, and the deterioration of the surface flatness is a negative factor in forming a transparent electrode or other electric element on each pixel pattern.
なおまた、重なりをもったカラーフィルタにおいては、
各色の画素パターン間の位置合わせを正確に行なうこと
が困難であり、縦、横の一方に大きな重なりを生じるお
それもある。Furthermore, in the case of overlapping color filters,
It is difficult to accurately align the pixel patterns of each color, and there is a possibility that a large overlap may occur in one of the vertical and horizontal directions.
（問題点を解決するための手段） この発明では、画素パターンの形を工夫することによっ
て、不必要な重なりを有効に回避するとともに、各色の
画素パターン間の位置合わせの作業性および精度の向上
を図っている。(Means for Solving Problems) In the present invention, by devising the shape of the pixel patterns, unnecessary overlap is effectively avoided, and the workability and accuracy of alignment between pixel patterns of each color are improved. I am trying to
すなわち、各画素パターンは、異なる色の画素パターン
に臨むコーナ部分のうち、対角線上に位置する２つのコ
ーナ部分が斜めに切り欠かれ、異なる色の画素パターン
同士が斜辺を介して互いに接している。そして、前記斜
辺は前記境界部の重なりの領域内に配置される。斜辺と
しては45°に傾斜したものが好適である。That is, in each pixel pattern, of the corner portions facing the pixel patterns of different colors, two corner portions located on a diagonal line are obliquely cut out, and the pixel patterns of different colors are in contact with each other via the hypotenuse. . Then, the hypotenuses are arranged in a region where the boundaries overlap. It is preferable that the hypotenuse be inclined at 45 °.
（作用） 各画素パターンについて、所定のコーナ部分を斜めに切
り欠いているので、２色の重なりはあっても３色の重な
りは未然に防止される。そのため、部分的な突起がなく
なり、比較的に平坦、かつ薄手の良好なカラーフィルタ
を得ることができる。(Operation) Since a predetermined corner portion is obliquely cut out in each pixel pattern, overlapping of three colors is prevented even if overlapping of two colors occurs. Therefore, a partial projection is eliminated, and it is possible to obtain a relatively flat and thin color filter.
また、各色の画素パターン間の位置合わせを行なう場
合、切り欠かれた斜辺の部分に注目して作業を行なうこ
とができるので、位置合わせを高精度に、かつ効率的に
行なうことができる。Further, when the alignment between the pixel patterns of each color is performed, the work can be performed while paying attention to the notched oblique side portion, so that the alignment can be performed with high accuracy and efficiency.
（実施例） 第１図は画素パターンの配列を示すレイアウト図であ
る。ガラスから成る基板１の表面には、赤、緑、青の３
原色から成る各画素パターンR,G,Bがマトリックス状に
配列されている。各画素パターンは各色ともに同色のも
のが直線L1の方向に沿って配置され、それがR,G,Bの順
に規則的に配列されている。したがって、どの画素パタ
ーンに注目しても、それに隣接する周りの画素パターン
とは異なる色をもっている。(Example) FIG. 1 is a layout diagram showing an array of pixel patterns. On the surface of the substrate 1 made of glass, red, green and blue 3
Pixel patterns R, G, B composed of primary colors are arranged in a matrix. For each pixel pattern, the same color for each color is arranged along the direction of the straight line L 1 , which is regularly arranged in the order of R, G, B. Therefore, no matter which pixel pattern is focused on, it has a different color from the surrounding pixel patterns adjacent thereto.
ここでは、第２図に拡大して示すように、隣接する画素
パターン同士に幅ｗの重なりをもたせるため、各画素パ
ターンを基準の大きさ（lx×ly）よりも大きく設定して
いる。lxおよびlyは各々ｘ方向およびｙ方向の画素パタ
ーンの配列ピッチに相当し、たとえば、100〜数百μｍ
程度の大きさである。一方、重なりの幅ｗは、lxおよび
lyに比べて一桁小さい、たとえば10μｍ程度の大きさで
ある。Here, as shown in an enlarged view in FIG. 2, each pixel pattern is set larger than the reference size (lx × ly) in order to allow adjacent pixel patterns to overlap each other with a width w. lx and ly correspond to the arrangement pitch of the pixel patterns in the x direction and the y direction, for example, 100 to several hundred μm.
It is about the size. On the other hand, the overlapping width w is lx and
It is an order of magnitude smaller than ly, for example, about 10 μm.
こうした各画素パターンは、直線L2に沿う方向のコーナ
部分が斜め45°に切り欠かれ、異なる色の画素パターン
同士が斜辺２を介して互いに接している。斜辺自体は、
第３図に示すように、対向する２つのコーナ３と４とで
大きさを変えたり（ａ図）、あるいは、傾斜角度を変え
たりすることもできる（ｂ図）。しかし、各コーナでの
大きさを同じとし、かつ傾斜角度を45°にするのが好適
である。その理由は、マスクの製作が比較的容易であ
り、しかもまた、位置合わせの際のずれとしてｘ方向、
ｙ方向の一方に極端に片寄ることが大幅に少なくなると
いう利点が得られる点にある。勿論、境界部に２色の重
なりをもたせつつ、３色の重なりを防ぐという趣旨か
ら、斜辺２は重なりの領域内に配置される。In each of these pixel patterns, the corner portion in the direction along the straight line L 2 is cut off at an angle of 45 °, and the pixel patterns of different colors are in contact with each other via the hypotenuse 2. The hypotenuse itself is
As shown in FIG. 3, it is possible to change the size between the two opposing corners 3 and 4 (FIG. A) or the inclination angle (FIG. B). However, it is preferable that the size at each corner is the same and the inclination angle is 45 °. The reason is that the mask is relatively easy to fabricate, and the misalignment in the x direction is
There is an advantage that the deviation to one side in the y direction is significantly reduced. Of course, the hypotenuse 2 is arranged in the overlapping area for the purpose of preventing the overlapping of the three colors while allowing the overlapping area of the two colors to overlap.
（発明の効果） この発明にあっては、画素パターンの形を工夫している
ことから、境界部に２色の重なりをもたせて、いわゆる
白抜けを防止する一方、不要な突起をなくして平坦性の
向上を図ることができる。(Advantages of the Invention) In the present invention, since the shape of the pixel pattern is devised, by overlapping the two colors at the boundary portion, so-called white spots are prevented, while eliminating unnecessary protrusions and flattening. It is possible to improve the sex.
また、各画素パターンのコーナ部分に斜辺を設けている
ことから、各色の画素パターン間の位置合わせの作業性
および精度の向上をも図ることができる。Further, since the oblique side is provided at the corner portion of each pixel pattern, it is possible to improve workability and accuracy of alignment between pixel patterns of each color.
第１図は画素パターンの配列を示すレイアウト図、第２
図は画素パターンを拡大して示す要部パターン図、第３
図は変形例を示すパターン図である。 １…基板、２…斜辺、3,4…コーナ、Ｒ…赤の画素パタ
ーン、Ｇ…緑の画素パターン、Ｂ…青の画素パターン。FIG. 1 is a layout diagram showing an arrangement of pixel patterns, and FIG.
The figure is a main part pattern diagram showing an enlarged pixel pattern,
The figure is a pattern diagram showing a modification. 1 ... Substrate, 2 ... hypotenuse, 3, 4 ... Corner, R ... Red pixel pattern, G ... Green pixel pattern, B ... Blue pixel pattern.
Claims (2)
色の画素パターンが周期性をもってマトリックス状に配
列され、しかも、隣接する画素パターンは互いに色が異
なり、かつ、その境界部に重なりをもつカラーフィルタ
において、前記各画素パターンは、異なる色の画素パタ
ーンに臨むコーナ部分のうち、対角線上に位置する２つ
のコーナ部分が斜めに切り欠かれ、異なる色の画素パタ
ーン同士が斜辺を介して互いに接し、しかも、前記斜辺
は前記境界部の重なりの領域内に配置されていることを
特徴とするカラーフィルタ。1. At least three layers of red, green and blue are provided on one surface of the substrate.
In a color filter in which color pixel patterns are arranged in a matrix with periodicity, and adjacent pixel patterns are different in color from each other and overlap each other in the boundary portion, each pixel pattern is a pixel pattern of a different color. Corner portions facing each other are diagonally cut away, two pixel patterns of different colors are in contact with each other through the oblique sides, and the oblique sides are within the overlapping area of the boundary portion. A color filter characterized by being arranged in.
請求の範囲第１項に記載のカラーフィルタ。2. The color filter according to claim 1, wherein the oblique side is a side inclined at 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60158040A JPH071323B2 (en) | 1985-07-19 | 1985-07-19 | Color filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60158040A JPH071323B2 (en) | 1985-07-19 | 1985-07-19 | Color filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6219804A JPS6219804A (en) | 1987-01-28 |
| JPH071323B2 true JPH071323B2 (en) | 1995-01-11 |
Family
ID=15662967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60158040A Expired - Lifetime JPH071323B2 (en) | 1985-07-19 | 1985-07-19 | Color filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071323B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908549A (en) * | 2009-06-02 | 2010-12-08 | 索尼公司 | Solid-state imaging device, manufacturing method of solid-state imaging device, and electronic device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009015074A (en) * | 2007-07-05 | 2009-01-22 | Sanyo Electric Co Ltd | COLOR FILTER, OPTICAL SENSOR MOUNTING COLOR FILTER AND MANUFACTURING METHOD THEREOF |
| JP6450580B2 (en) * | 2014-12-17 | 2019-01-09 | 株式会社ジャパンディスプレイ | Color filter substrate and display device |
| JP7341775B2 (en) * | 2019-07-31 | 2023-09-11 | 株式会社ジャパンディスプレイ | display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50108315U (en) * | 1974-02-13 | 1975-09-04 | ||
| JPS59204009A (en) * | 1983-05-06 | 1984-11-19 | Seiko Epson Corp | color filter |
-
1985
- 1985-07-19 JP JP60158040A patent/JPH071323B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908549A (en) * | 2009-06-02 | 2010-12-08 | 索尼公司 | Solid-state imaging device, manufacturing method of solid-state imaging device, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6219804A (en) | 1987-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |