JPH0782125B2 - Color filter - Google Patents
Color filterInfo
- Publication number
- JPH0782125B2 JPH0782125B2 JP15935986A JP15935986A JPH0782125B2 JP H0782125 B2 JPH0782125 B2 JP H0782125B2 JP 15935986 A JP15935986 A JP 15935986A JP 15935986 A JP15935986 A JP 15935986A JP H0782125 B2 JPH0782125 B2 JP H0782125B2
- Authority
- JP
- Japan
- Prior art keywords
- color filter
- colored
- color
- colored image
- refractive index
- 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 - Fee Related
Links
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 12
- 239000003086 colorant Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 28
- 239000010408 film Substances 0.000 description 15
- 238000007639 printing Methods 0.000 description 10
- 239000000976 ink Substances 0.000 description 8
- 239000000049 pigment Substances 0.000 description 8
- 238000004043 dyeing Methods 0.000 description 7
- 230000003595 spectral effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 4
- 239000003981 vehicle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000001723 curing Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
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〕 本発明は、カラーフィルターに係り、更に詳しくは撮像
管、固体撮像素子カラーファクシミリ用センサー等にお
ける色分解用カラーフィルターおよびカラー液晶表示装
置等における色合成用カラーフィルターに関する。The present invention relates to a color filter, and more particularly, to a color filter for color separation in an image pickup tube, a solid-state image sensor color facsimile sensor, a color liquid crystal display device, and the like. The present invention relates to a color filter for color composition.
カラーフィルターは、ガラス、プラスチック、撮像素
子、薄膜トランジスター等の基板の上に複数色の微細な
着色画素を順次くり返し形成し、更にその上に保護膜を
設けた構成になっている。着色画素はさまざまな形成法
が提案されている。実用化例としては、 （１）ホトリソグラフィ法（ゼラチン、グリュー、カゼ
イン等のタンパク質や、PVA等に染色基を導入した水溶
性高分子と重クロム酸アンモニウム、ジアゾ化合物など
の光反応硬化剤を用いて、製版、染色工程によって、着
色画像を順次形成する方法。） （２）印刷法（透明性の良好な顔料または染料を用い
て、ビヒクル中に分散させ、スクリーン印刷法、オフセ
ット印刷法、フレキソ凹版印刷法等により、各着色画素
を順次形成する方法。） （３）電着法（イオン化した顔料を水中に分散させてお
き、予めパターン化した透明電極に電圧を印加し、イオ
ン化した顔料をその透明電極上に析出させ、これを順次
くり返して着色画素を得る方法。） （４）蒸着法（昇華性顔料等を高真空中で基板上に被着
せしめリフトオフ法又はエッチング法等で、順次着色画
素を得るか、低屈折率物質との高屈折率物質を所定膜厚
交互に積層させた多層干渉膜を、リフトオフ法か、エッ
チング法により、順次画素を得る方法。） などがある。The color filter has a structure in which fine colored pixels of a plurality of colors are sequentially and repeatedly formed on a substrate such as glass, plastic, an image sensor, and a thin film transistor, and a protective film is further provided thereon. Various methods of forming colored pixels have been proposed. Examples of practical applications include (1) photolithography (proteins such as gelatin, glue, and casein; water-soluble polymers having dye groups introduced into PVA and photoreactive curing agents such as ammonium dichromate and diazo compounds). (2) Printing method (a pigment or dye having good transparency is used to disperse the pigment in a vehicle, and a screen printing method, an offset printing method are used. A method of sequentially forming each colored pixel by a flexographic intaglio printing method, etc.) (3) Electrodeposition method (an ionized pigment is dispersed in water, and a voltage is applied to a transparent electrode that is patterned in advance to ionize the pigment. Is deposited on the transparent electrode and is sequentially repeated to obtain colored pixels.) (4) Vapor deposition method (lift-off method by depositing a sublimable pigment on a substrate in a high vacuum) Alternatively, a method for sequentially obtaining colored pixels by an etching method or a method for sequentially obtaining pixels by a lift-off method or an etching method for a multilayer interference film in which a low refractive index material and a high refractive index material are alternately laminated with a predetermined thickness .) and so on.
ところでホトリソグラフィー法で着色画素を形成した場
合光反応による硬化が不十分であったり、染色条件によ
っては、画素が潤膨、更に収縮することにより第６図
（ａ）の様に画素（２）の表面がマット化することが有
る。この場合、マット化された面で光が散乱され、分光
特性的にはマット化していないものに比べ、トップ透過
率が低下し、各純度の低下が顕著になる。By the way, when a colored pixel is formed by the photolithography method, the curing due to the photoreaction is insufficient, or the pixel expands and contracts depending on the dyeing condition, resulting in the pixel (2) as shown in FIG. 6 (a). The surface of the may become matte. In this case, light is scattered on the matted surface, and the top transmittance is lowered and the respective purities are markedly reduced, as compared with those which are not matted in terms of spectral characteristics.
尚、第６図（ａ）において（１）は基板を示す。Incidentally, in FIG. 6 (a), (1) shows a substrate.
上記（３）項に記載した様に顔料粒子を電着する場合
も、顔料が透明電極上に付着している状態なので、表面
がマット化しており、この場合も、同様に分光特性的に
不利になる。Even when the pigment particles are electrodeposited as described in the above item (3), since the pigment is in the state of being adhered on the transparent electrode, the surface is matted, and in this case, the spectral characteristics are also disadvantageous. become.
また、（２）の様に印刷法によって着色画素を形成する
場合、表面のマット化以外に、別の問題が生じる。つま
り、第６図（ｂ）の様に印刷法による着色画素（３）の
断面形状は概ね、外周部は薄膜化しており、中心部は厚
膜化した、いわゆるレンズ状になっている。この状態
で、平行光を透過させると、着色画素部によって光の集
中および散乱が生じ、輝度にムラを生じたり表示装置の
解像度が低下する。Further, when the colored pixels are formed by the printing method as in (2), another problem occurs in addition to the matting of the surface. That is, as shown in FIG. 6B, the cross-sectional shape of the colored pixel (3) formed by the printing method is a so-called lens shape in which the outer peripheral portion is thinned and the central portion is thickened. When parallel light is transmitted in this state, light is concentrated and scattered by the colored pixel portion, which causes uneven brightness and lowers the resolution of the display device.
そこで本発明が解説しょうとする問題点は着色画像によ
る光の集光、散乱を防止したカラーフィルターを提供す
ることにある。Therefore, a problem to be explained by the present invention is to provide a color filter which prevents light from being condensed and scattered by a colored image.
本発明は『基板上に複数色の微細な着色画像を設け、着
色画像を設けた基板上に保護膜として、該着色画像と同
一種類のビヒクルで構成された透明樹脂層を設けてなる
カラーフィルター』を要旨とするものである。The present invention provides a "color filter comprising a substrate on which fine colored images of a plurality of colors are provided, and a transparent resin layer formed of a vehicle of the same type as the colored image as a protective film on the substrate on which the colored images are provided. ] Is the gist.
第１図は本発明のカラーフィルターを示す。FIG. 1 shows the color filter of the present invention.
基板（10）上に着色画像（11a）（11b）（11c）が設け
られ着色画像（11a）（11b）（11c）を設けた基板（1
0）上に着色画像との屈折率の差が0.005以内であり、且
つ表面の平滑性が±0.5μｍ以内である透明樹脂（12）
が設けられている。Substrate (1) with colored images (11a) (11b) (11c) provided on substrate (10) and with colored images (11a) (11b) (11c) provided
0) A transparent resin having a difference in refractive index of 0.005 or less from that of the colored image and a surface smoothness of ± 0.5 μm or less.
Is provided.
本発明のカラーフィルターの製造過程を工程順に説明す
ると、第２図（ａ）の様に、所定のガラス基板（10）上
に印刷法で第１色目の着色画画（11a）を形成する。こ
の時の断面形状は、外周部が薄膜で、中心部が厚膜にな
る、いわゆるレンズ状である。これを硬化させ、２色
目、３色目を形成し、赤、緑、青の着色画像（11a）（1
1b）（11c）からなる第２図（ｂ）の様なカラーフィル
ターを順次形成する。この時の表面凹凸は３〜４μｍで
ある。The manufacturing process of the color filter of the present invention will be described step by step. As shown in FIG. 2A, a colored image (11a) of the first color is formed on a predetermined glass substrate (10) by a printing method. The sectional shape at this time is a so-called lens shape in which the outer peripheral portion is a thin film and the central portion is a thick film. This is cured to form the second and third colors, and the red, green, and blue colored images (11a) (1
1b) A color filter as shown in FIG. 2 (b) consisting of (11c) is sequentially formed. The surface roughness at this time is 3 to 4 μm.
次いで第１図の様に透明樹脂層（12）を膜厚10μｍにて
塗布形成し、硬化させる。この時の表面凹凸は、0.1μ
ｍ以下とする。Next, as shown in FIG. 1, a transparent resin layer (12) is applied and formed to a film thickness of 10 μm and cured. The surface roughness at this time is 0.1μ
m or less.
透明樹脂層の構成材料としては、着色画像との屈折率の
差が0.005以内のものを使用できインキと同一ビヒクル
を使用することが最も容易な形成法である。As a constituent material of the transparent resin layer, a material having a refractive index difference of 0.005 or less with a colored image can be used, and the same vehicle as the ink is the easiest forming method.
尚、本発明は着色画像を印刷により形成する場合に限ら
ず、着色画像をホトリソグラフィー法により形成する場
合にも適用しうるものである。The present invention can be applied not only to the case where the colored image is formed by printing but also to the case where the colored image is formed by the photolithography method.
以下、簡単に発明のカラーフィルターの原理を説明す
る。The principle of the color filter of the invention will be briefly described below.
第３図の様に光が媒質Ａから媒質Ｂとの境界面に、入射
するとき、入射角θＡ、屈折角θＢ、媒質Ａの屈折率n
A、媒質Ｂの屈折率nBとすると、スネルの法則によりnB/
nA＝sinθA/sinθＢになる。As shown in FIG. 3, when light is incident on the interface between the medium A and the medium B, the incident angle θ A , the refraction angle θ B , and the refractive index n of the medium A
Assuming that A and the refractive index of the medium B are nB, nB /
nA = sin θ A / sin θ B.
一般に透明樹脂の屈折率は1.5〜1.6であり、空気の屈折
率は約1.0なので、例えば印刷法によるカラーフィルタ
ーの場合、第５図（ａ）の様な光の径路で、集光・散乱
する。Generally, the refractive index of transparent resin is 1.5 to 1.6, and the refractive index of air is about 1.0. Therefore, for example, in the case of a color filter by the printing method, light is condensed and scattered in the light path as shown in FIG. 5 (a). .
更に第４図を用いて、印刷法による着色画素について以
下に説明する。Furthermore, the colored pixel by the printing method will be described below with reference to FIG.
印刷法による着色画像は、第４図（ａ）の様にレンズ状
になるが、これを第４図（ｂ）の様に三角形に近似さ
せ、およその焦点距離を計算する。The colored image formed by the printing method has a lens shape as shown in FIG. 4 (a), and this is approximated to a triangle as shown in FIG. 4 (b) to calculate an approximate focal length.
今、ここで、ａ＝５μｍ ｂ＝100μｍ 着色画像の屈
折率1,500とし、着色画像中を平行光が通り、空気中
（屈折率1,000）で結像すると仮定する。Here, it is assumed that a = 5 μm b = 100 μm and the refractive index of the colored image is 1,500, and that parallel light passes through the colored image and an image is formed in the air (refractive index 1,000).
入射角θ１≒1,718゜、屈折角θ２≒2,578゜になるの
で、この着色画像の焦点距離ｃは、およそ6.67mmにな
る。Since the incident angle θ 1 ≈1,718 ° and the refraction angle θ 2 ≈2,578 °, the focal length c of this colored image is about 6.67 mm.
次に前記と同一の着色画像を考え、この着色画像上に、
屈折率1,501の透明樹脂が塗布してあるとすると、入射
角θ１≒1,718゜、屈折角θ２≒1,720゜になり焦点距離
atc.はおよそ5mになり、着色画像の焦光、発散による画
質低下は、ほぼ無視し得る。Next, consider the same colored image as above, and on this colored image,
If a transparent resin with a refractive index of 1,501 is applied, the incident angle θ 1 ≈ 1,718 ° and the refraction angle θ 2 ≈ 1,720 ° will be the focal length.
The atc. is about 5 m, and the deterioration of the image quality due to the focal light and divergence of the colored image can be almost ignored.
実際に、インキのビヒクル単独での屈折率と顔料を分散
させた後での屈折率は、ほぼ等しくθ１＝θ２、ａ＋ｃ
→∞になり、第５図（ｂ）図示のような光の径路がとら
れ、本発明による効果は十分に達せられる。In fact, the refractive index of the ink vehicle alone and the refractive index after dispersion of the pigment are almost equal to each other. Θ 1 = θ 2 , a + c
→ becomes ∞, and the path of light as shown in FIG. 5 (b) is taken, and the effect of the present invention can be sufficiently achieved.
表１にカラーフィルター等にしばしば用いられている透
明樹脂の屈折率を掲げる。Table 1 lists the refractive index of transparent resins often used for color filters and the like.
上記のカラーフィルターと、透明樹脂を塗布前のカラー
フィルターを用意し、これを用いて液晶による多色電気
光学表示装置を作成した。 The above-mentioned color filter and the color filter before applying the transparent resin were prepared, and using this, a multicolor electro-optical display device using liquid crystal was prepared.
上記の透明樹脂を塗布していないカラーフィルターは、
全般的に、輝度ムラが目立ち、５ポイント以下の活字の
判読は困難だった。一方、本発明のカラーフィルターは
輝度ムラが認められず、3.5ポイントの活字の判読が可
能であった。Color filters not coated with the above transparent resin,
In general, the uneven brightness was noticeable, and it was difficult to read characters of 5 points or less. On the other hand, in the color filter of the present invention, uneven brightness was not recognized, and it was possible to read a 3.5-point type.
同様の原理でホトリソグラフィー法で形成した着色画素
の様に表面がマット化した境界面での光散乱も防止する
ことができ、分光特性を向上させることができる。According to the same principle, it is possible to prevent light scattering at a boundary surface having a matt surface such as a colored pixel formed by a photolithography method, and to improve spectral characteristics.
実施例１ 厚さ、1.1mm外形100mm×100mmのソーダライムガラスを
洗浄し、ドライオフセット法により、カラーフィルター
を形成した。Example 1 A soda lime glass having a thickness of 1.1 mm and an outer shape of 100 mm × 100 mm was washed and a color filter was formed by a dry offset method.
PS版の製版は、以下の様に行なった。The PS plate was made as follows.
オフセット印刷用PS版LKP−Ａ（富士薬品）を用いて、
所定画素形状のフィルムパターンを密着露光し、LKP現
像液で現像、乾燥し、リスコートガムをガムコーターで
ガム引きを行なって所望の版を得た。Using PS version LKP-A (Fuji Chemical) for offset printing,
A film pattern having a predetermined pixel shape was contact-exposed, developed with an LKP developer, dried, and gummed with a gum coater to give a desired plate.
前記PS版をオフセット校正機に装着し、赤インキを用い
て印刷、熱硬化させた。この赤インキに対して、所定ピ
ッチ分PS版をずらし、緑インキを用いて、熱硬化させ
た。更に青インキを用いて、同様に着色画素を形成し、
赤、緑、青が規制正しく配列されたカラーフィルター層
を得た。この時の膜厚を測定したところ、３〜４μｍで
あった。The PS plate was mounted on an offset proof machine, printed with red ink, and heat-cured. With respect to this red ink, the PS plate was shifted by a predetermined pitch, and the green ink was used for heat curing. Further, using blue ink, similarly form colored pixels,
A color filter layer in which red, green and blue were arranged in a regulated manner was obtained. The film thickness at this time was measured and found to be 3 to 4 μm.
このカラーフィルター層の上にロジン変性フェノール、
あまに油から成るペースト状透明樹脂のローラー塗布
し、膜厚10μｍを得た。この時の表面凹凸は、0.1μｍ
以下であった。これを熱硬化し、目的のカラーフィルタ
ーを得た。Rosin-modified phenol on this color filter layer,
A paste-like transparent resin made of linseed oil was roller-coated to obtain a film thickness of 10 μm. The surface roughness at this time is 0.1 μm
It was below. This was heat-cured to obtain the desired color filter.
カラーフィルター作成前に、ペースト状透明樹脂および
赤、緑、青インキの屈折率を島津製作所製アッペ屈折計
3L形によって計測したところ、それぞれ1.5251,1.5263,
1.5261,1.5261の屈折率であった。Before making color filters, the refractive index of paste-like transparent resin and red, green, and blue inks can be measured by the Shimadzu Appe refractometer.
When measured by 3L type, it is 1.5251, 1.5263,
The refractive indices were 1.5261 and 1.5261.
本発明のカラーフィルターを用いて液晶による多色電気
光学表示装置に実装し、評価したところ、優れた画質が
得られた。When the color filter of the present invention was used for mounting on a multicolor electro-optical display device using liquid crystal and evaluated, excellent image quality was obtained.
以下に、各インキの組成を表２に示す。The composition of each ink is shown in Table 2 below.
実施例２ 厚さ0.5mmの赤外線遮断性透明基板を洗浄し、カゼイン
−重クロム酸アンモニウムからなる水溶性感光液を0.8
μｍの膜厚に塗布、乾燥後、所定のホトマスクを正確に
位置合わせて密着、露光し、温水により現像し、この被
染色層を赤染色浴により染色し、赤の着色層を形成し
た。ついで、所定の汚染処理を行なった後、前記と同様
の方法により、水溶性感光液を0.8μｍの膜厚に塗布、
乾燥、露光、現像、緑色染色浴による染色を行ない所定
パターンをもった緑の着色層を形成し、２色目の着色層
を形成する。 Example 2 A 0.5 mm-thick infrared ray-shielding transparent substrate was washed, and a water-soluble photosensitive solution containing casein-ammonium dichromate was added to 0.8.
After coating to a film thickness of .mu.m and drying, a predetermined photomask was accurately aligned and brought into close contact, exposed, and developed with warm water. This dyed layer was dyed with a red dyeing bath to form a red colored layer. Then, after carrying out a predetermined contamination treatment, a water-soluble photosensitive solution is applied to a film thickness of 0.8 μm by the same method as described above,
Drying, exposure, development and dyeing with a green dyeing bath are performed to form a green colored layer having a predetermined pattern, and a second colored layer is formed.
さらに、２色目の着色層の形成方法と同様の方法によ
り、青色染色浴を用いて、所定パターンをもった３色目
の青の染色層を形成すれば、所定パターンをもった赤、
緑、青の着色層からなる色分離フィルター層が得られ
る。Further, if a third color blue dyeing layer having a predetermined pattern is formed by using a blue dyeing bath by the same method as the method for forming the second coloration layer, a red color having a predetermined pattern,
A color separation filter layer composed of green and blue colored layers is obtained.
その後、この色分離フィルター層に前記のカゼイン−重
クロム酸アンモニウム水溶液感光液を1.5μｍの膜厚に
塗布乾燥後、露光して硬化させ、保護膜を形成した。Then, the color separation filter layer was coated with the above casein-ammonium dichromate aqueous solution photosensitive solution to a film thickness of 1.5 μm, dried and then exposed to cure to form a protective film.
カラーフィルター作成前にカゼイン−重クロム酸アンモ
ニウムフィルムおよびこれを赤、緑、青色に染色したフ
ィルムを作製し、実施例１と同様に島津製作所製アッペ
屈折計3L形によって計測したところ、それぞれ、1.540
1,1.5409,1.5410,1.5412の屈折率であることがわかっ
た。Before making a color filter, a casein-ammonium dichromate film and a film obtained by dyeing the film with red, green, and blue were prepared, and measured by an Appe refractometer 3L type manufactured by Shimadzu Corporation in the same manner as in Example 1, and found to be respectively 1.540.
It was found that the refractive indices were 1,1.5409, 1.5410, and 1.5412.
尚、以上において用いた染色浴組成は表３の通りであ
る。The dye bath composition used in the above is as shown in Table 3.
この様に形成したカラーフィルターの分光特性を測定し
たところ、本発明のカラーフィルターは、従来のものと
比べ、トップ透過率においてＲ・Ｇ・Ｂ共５〜７％増加
し、色純度が向上した。 When the spectral characteristics of the color filter formed in this manner were measured, the color filter of the present invention showed an increase in top transmittance of 5 to 7% for R, G, and B, and improved color purity, as compared with the conventional filter. .
以上詳記した通り、本発明のカラーフィルターは着色画
像による光の集光、散乱が防止されており、すぐれた分
光特性を有するという利点を有するものである。As described in detail above, the color filter of the present invention has an advantage that light is prevented from being condensed and scattered by a colored image, and that it has excellent spectral characteristics.
第１図は本発明のカラーフィルターの断面図、第２図
（ａ）、（ｂ）は本発明のカラーフィルターの製造過程
を示す断面図、第３図（ａ）、（ｂ）は異なる屈折率媒
質の境界面での光の経路を示す模式図、第４図（ａ）は
印刷による着色画像の断面形状を示す模式図、第４図
（ｂ）は着色画像の断面形状を三角形に近似させたとき
の光の経路を示す模式図、第５図（ａ）は従来のカラー
フィルターの光の経路を示す模式図、第５図（ｂ）は本
発明のカラーフィルターの光の経路を示す模式図、第６
図（ａ）、（ｂ）は従来のカラーフィルターの断面図で
ある。 10……基板 11a,11b,11c……着色画像 12……透明樹脂層1 is a sectional view of a color filter of the present invention, FIGS. 2 (a) and 2 (b) are sectional views showing a manufacturing process of the color filter of the present invention, and FIGS. 3 (a) and 3 (b) are different refractions. FIG. 4 (a) is a schematic diagram showing the cross-sectional shape of the colored image by printing, and FIG. 4 (b) is a schematic diagram showing the cross-sectional shape of the colored image approximated to a triangle. FIG. 5 (a) is a schematic view showing a light path of a conventional color filter, and FIG. 5 (b) is a light path of a color filter of the present invention. Schematic diagram, No. 6
(A) and (b) are sectional views of a conventional color filter. 10 …… Substrate 11a, 11b, 11c …… Colored image 12 …… Transparent resin layer
Claims (1)
着色画像を設けた基板上に保護膜として、該着色画像と
同一種類のビヒクルで構成された透明樹脂層を設けてな
るカラーフィルター1. A fine colored image of a plurality of colors is provided on a substrate,
A color filter in which a transparent resin layer composed of a vehicle of the same type as the colored image is provided as a protective film on a substrate provided with the colored image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15935986A JPH0782125B2 (en) | 1986-07-07 | 1986-07-07 | Color filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15935986A JPH0782125B2 (en) | 1986-07-07 | 1986-07-07 | Color filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6315204A JPS6315204A (en) | 1988-01-22 |
| JPH0782125B2 true JPH0782125B2 (en) | 1995-09-06 |
Family
ID=15692119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15935986A Expired - Fee Related JPH0782125B2 (en) | 1986-07-07 | 1986-07-07 | Color filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0782125B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176704A (en) * | 1988-12-28 | 1990-07-09 | Toppan Printing Co Ltd | Color filter |
| JPH06120461A (en) * | 1992-10-01 | 1994-04-28 | Matsushita Electron Corp | Solid-state image sensing device |
| JP2004111867A (en) | 2002-09-20 | 2004-04-08 | Canon Inc | Solid-state imaging device |
| JP2009283978A (en) * | 2009-08-24 | 2009-12-03 | Canon Inc | Solid-state image pickup device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572009A (en) * | 1980-06-05 | 1982-01-07 | Matsushita Electric Ind Co Ltd | Color separation filter |
| JPS5723909A (en) * | 1980-07-18 | 1982-02-08 | Matsushita Electric Ind Co Ltd | Color separation stripe filter |
| JPS616624A (en) * | 1984-06-21 | 1986-01-13 | Sony Corp | Production of liquid crystal color display element |
-
1986
- 1986-07-07 JP JP15935986A patent/JPH0782125B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572009A (en) * | 1980-06-05 | 1982-01-07 | Matsushita Electric Ind Co Ltd | Color separation filter |
| JPS5723909A (en) * | 1980-07-18 | 1982-02-08 | Matsushita Electric Ind Co Ltd | Color separation stripe filter |
| JPS616624A (en) * | 1984-06-21 | 1986-01-13 | Sony Corp | Production of liquid crystal color display element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6315204A (en) | 1988-01-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |