JP2638883B2 - Manufacturing method of color filter - Google Patents
Manufacturing method of color filterInfo
- Publication number
- JP2638883B2 JP2638883B2 JP3624488A JP3624488A JP2638883B2 JP 2638883 B2 JP2638883 B2 JP 2638883B2 JP 3624488 A JP3624488 A JP 3624488A JP 3624488 A JP3624488 A JP 3624488A JP 2638883 B2 JP2638883 B2 JP 2638883B2
- Authority
- JP
- Japan
- Prior art keywords
- color filter
- photosensitive resin
- liquid crystal
- resin
- crystal display
- 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
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Filters (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明はビデオカメラの心臓部であるカラー固体撮像
素子やカラー液晶表示装置に用いられるカラーフィルタ
ーの製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a color filter used in a color solid-state imaging device or a color liquid crystal display device, which is the heart of a video camera.
＜発明の技術的背景＞ カラー固体撮像素子や液晶表示装置のカラー化に用い
られるカラーフィルターは、例えば、第１図に示すよう
に、任意の基体（１）の上に赤（Ｒ）、緑（Ｇ）、青
（Ｂ）の各色相を有するフィルター層（２）がマトリク
ス状、モザイク状、ストライプ状に細かく配列されてい
るものであり、その構造は第２図に示すように、各フィ
ルター層（２）の間に中間膜（３）を介在させるものも
ある。いずれにしてもフィルター層（２）は直接あるい
は介在層を隔てて間接的に固体撮像素子や液晶表示装置
の液晶に接するものである。<Technical Background of the Invention> A color filter used for colorization of a color solid-state imaging device or a liquid crystal display device includes, for example, as shown in FIG. (G), a filter layer (2) having each hue of blue (B) is finely arranged in a matrix, mosaic, or stripe, and the structure thereof is as shown in FIG. In some cases, an intermediate film (3) is interposed between the layers (2). In any case, the filter layer (2) is in direct contact with the solid-state imaging device or the liquid crystal of the liquid crystal display device directly or indirectly through an intervening layer.
かかるカラーフィルターを構成するフィルター層に
は、ミクロン単位の高精度パターンが要求されるので、
材料として写真的手段にてパターン化が可能な感光性樹
脂が使用され、しかもその樹脂が染料に染まりやすいこ
とが要請されるから、従来例えば、グリュー、ゼラチ
ン、低分子量ゼラチン、カゼイン、卵白等の天然ペプタ
イド樹脂（ペプチド樹脂という言い方もある）を樹脂成
分とし光架橋剤として重クロム酸塩を用いた感光性樹脂
が用いられている。Since a high-precision pattern on the order of microns is required for the filter layer constituting such a color filter,
As a material, a photosensitive resin that can be patterned by photographic means is used, and since it is required that the resin be easily dyed by a dye, conventionally, for example, glue, gelatin, low molecular weight gelatin, casein, egg white, etc. A photosensitive resin using a natural peptide resin (also referred to as a peptide resin) as a resin component and a dichromate as a photocrosslinking agent is used.
＜発明が解決しようとする課題＞ しかしながら、上記ペプタイド樹脂と重クロム酸塩を
主成分とする感光性樹脂には、アルカリ成分を加えてpH
値を６〜７の値に調整する必要があり、pH調整剤として
水酸化ナトリウム（NaOH）、水酸化カリウム（KOH）が
添加されている。このアルカリ金属イオン（ナトリウム
イオン、カリウム）はフィルター層中に残留し、経時変
化により固体撮像素子や液晶表示装置の液晶中に拡散
し、素子の劣化、液晶ディスプレイの不良原因となる可
能性があった。<Problems to be Solved by the Invention> However, the above-mentioned peptide resin and the photosensitive resin containing dichromate as main components are added with an alkali component to adjust the pH.
It is necessary to adjust the value to a value of 6 to 7, and sodium hydroxide (NaOH) and potassium hydroxide (KOH) are added as pH adjusters. The alkali metal ions (sodium ions and potassium) remain in the filter layer and diffuse into the liquid crystal of the solid-state imaging device or the liquid crystal display device with the lapse of time, which may cause deterioration of the device and failure of the liquid crystal display. Was.
すなわち、本発明はカラーフィルター中のアルカリ金
属イオンの拡散による撮像素子の劣化や液晶表示装置の
劣化を防止しようとするものである。That is, an object of the present invention is to prevent deterioration of an image pickup device and deterioration of a liquid crystal display device due to diffusion of alkali metal ions in a color filter.
＜課題を解決する手段＞ すなわち、本発明は、天然ペプタイド樹脂と光架橋剤
としての重クロム酸塩を主成分とする感光性樹脂の硬化
層に染料による染色を施してなるカラーフィルターの製
造方法において、重クロム酸塩として重クロム酸アンモ
ニウムを用い、かつ感光性樹脂のpH調整剤としてアルカ
リ金属イオンを含まない有機塩基類または第４級アンモ
ニウムイオンの水酸化物塩を添加した感光性樹脂を用い
て製造することを特徴とするカラーフィルターの製造方
法である。<Means for Solving the Problems> That is, the present invention provides a method for producing a color filter obtained by dyeing a cured layer of a photosensitive resin mainly composed of a natural peptide resin and a dichromate as a photocrosslinking agent with a dye. In the above, a photosensitive resin obtained by using ammonium bichromate as a dichromate and adding an alkali base not containing an alkali metal ion or a hydroxide salt of a quaternary ammonium ion as a pH adjuster of the photosensitive resin is used. This is a method for producing a color filter, characterized in that it is produced using the same.
本発明に用いるpH調整剤の例としては、イミダゾー
ル、水酸化テトラエチルアンモニウム、水酸化テトラメ
チルアンモニウム等があげられる。これらは、入手しや
すさ、購入費の安さからすすめられるが、もちろん、こ
れらに限られるものではない。Examples of the pH adjuster used in the present invention include imidazole, tetraethylammonium hydroxide, tetramethylammonium hydroxide and the like. These are recommended from the viewpoint of availability and low purchase cost, but are not limited to them.
＜作用＞ 本発明のカラーフィルターの製造方法の主成分となる
感光性樹脂には、その光架橋剤およびpH調整剤に全くア
ルカリ金属元素が含まれていない。よって本発明のカラ
ーフィルターを固体撮像素子や液晶表示装置に用いて
も、経時変化によりフィルターからアルカリ金属イオン
が拡散することなく、撮像素子や液晶表示装置の寿命を
向上させるものである。<Action> The photosensitive resin which is the main component of the method for producing a color filter of the present invention contains no alkali metal element in its photocrosslinking agent and pH adjuster. Therefore, even when the color filter of the present invention is used for a solid-state imaging device or a liquid crystal display device, the life of the imaging device or the liquid crystal display device is improved without alkali metal ions diffusing from the filter due to aging.
＜実施例１＞ 水溶性感光剤として、牛骨ペプタイドの加水分解物
（平均分子量１万）20重量％と重クロム酸アンモニウム
４重量％からなるペプタイド感光剤料に、イミダゾール
30％水溶液を添加して、pHを6.6に調整した。この感光
材料を使用し、ガラス基板上に厚み1.0μｍになるよう
に回転塗布機で塗布し、露光・現像し、0.8μｍのスト
ライプ状のリーフパターンを得た。これを表１に示すよ
うな条件で染色し、赤色フィルター層とした。タンニン
酸、吐酒石で定着処理を行ったのち、同様に厚み0.8μ
ｍのストライプ状のレリーフパターンを形成し、第２色
目の緑色の染色層を形成した。再び同様の操作で、第３
色目の青色フィルター層を形成し、固体撮像素子用の色
分解フィルターを得た。操作上とくに問題はなかった。<Example 1> As a water-soluble photosensitizer, imidazole was added to a peptide photosensitizer containing 20% by weight of a hydrolyzate of bovine bone peptide (average molecular weight 10,000) and 4% by weight of ammonium dichromate.
The pH was adjusted to 6.6 by adding a 30% aqueous solution. Using this photosensitive material, it was coated on a glass substrate by a spin coater so as to have a thickness of 1.0 μm, and was exposed and developed to obtain a 0.8 μm stripe leaf pattern. This was dyed under the conditions shown in Table 1 to obtain a red filter layer. After fixing with tannic acid and tartar, the thickness is similarly 0.8μ
An m-shaped striped relief pattern was formed, and a green dyed layer of the second color was formed. Again in the same operation, the third
A blue color filter layer was formed to obtain a color separation filter for a solid-state imaging device. There was no problem in operation.
＜実施例２＞ 水溶性樹脂として、牛骨ペプタイドの加水分解物の代
わりにフィッシュグリューを使用し、実施例１と同様の
操作をしたところ、同様の結果を得た。 <Example 2> The same operation as in Example 1 was performed by using fish grease instead of the hydrolyzate of bovine bone peptide as the water-soluble resin, and the same result was obtained.
＜実施例３＞ 牛骨ペプタイドの加水分解物（平均分子量1.5万）に
重クロム酸アンモニウムを添加、水酸化テトラエチルア
ンモニウム10％水溶液でpH6.6に調整し、実施例１と同
様の操作でもモザイクパターンを形成し、LCD用のカラ
ーフィルターを得た。（染色層の厚みは２μｍにし
た。） ＜効果＞ 本発明のカラーフィルターの製造方法は、以上のよう
なものであり、アルカリ金属イオン含有量を低減した感
光性樹脂を被染色層材料にしたので、固体撮像素子上の
カラーフィルターや液晶表示装置用のカラーフィルター
に用いることで、アルカリ金属イオンの拡散による撮像
素子の特性劣化、液晶表示装置の耐久性の低下を防止
し、長期の使用に耐えるものとなる。<Example 3> Ammonium dichromate was added to a hydrolyzate of bovine bone peptide (average molecular weight: 15,000), adjusted to pH 6.6 with a 10% aqueous solution of tetraethylammonium hydroxide, and mosaiced in the same manner as in Example 1. A pattern was formed, and a color filter for LCD was obtained. (The thickness of the dyed layer was 2 μm.) <Effect> The method for producing a color filter of the present invention is as described above, and a photosensitive resin having a reduced alkali metal ion content was used as a material for a layer to be dyed. Therefore, by using it as a color filter on a solid-state image sensor or a color filter for a liquid crystal display device, deterioration of the characteristics of the image sensor due to diffusion of alkali metal ions and a decrease in the durability of the liquid crystal display device can be prevented. It will endure.
フロントページの続き (72)発明者 伊藤 慎次 東京都台東区台東１丁目５番１号 凸版 印刷株式会社内 審査官 森内 正明 (56)参考文献 特開 昭62−86303（ＪＰ，Ａ) 特開 昭60−39601（ＪＰ，Ａ) 特開 昭61−290407（ＪＰ，Ａ) 特開 昭59−99761（ＪＰ，Ａ)Continuation of front page (72) Inventor Shinji Ito 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. Examiner Masaaki Moriuchi (56) References JP-A-62-86303 (JP, A) JP-A Sho 60-39601 (JP, A) JP-A-61-290407 (JP, A) JP-A-59-99761 (JP, A)
Claims (1)
ロム酸塩を主成分とする感光性樹脂の硬化層に染料によ
る染色を施してなるカラーフィルターの製造方法におい
て、重クロム酸塩として重クロム酸アンモニウムを用
い、かつ感光性樹脂のpH調整剤としてアルカリ金属イオ
ンを含まない有機塩基類または第４級アンモニウムイオ
ンの水酸化物塩を添加した感光性樹脂を用いて製造する
ことを特徴とするカラーフィルターの製造方法。1. A method for producing a color filter, wherein a cured layer of a photosensitive resin containing a natural peptide resin and a dichromate as a photocrosslinking agent as a main component is dyed with a dye. It is characterized by being manufactured using ammonium chromate and a photosensitive resin to which an alkali base not containing an alkali metal ion or a quaternary ammonium ion hydroxide salt is added as a pH adjuster of the photosensitive resin. Method of manufacturing color filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3624488A JP2638883B2 (en) | 1988-02-18 | 1988-02-18 | Manufacturing method of color filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3624488A JP2638883B2 (en) | 1988-02-18 | 1988-02-18 | Manufacturing method of color filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01210902A JPH01210902A (en) | 1989-08-24 |
| JP2638883B2 true JP2638883B2 (en) | 1997-08-06 |
Family
ID=12464360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3624488A Expired - Lifetime JP2638883B2 (en) | 1988-02-18 | 1988-02-18 | Manufacturing method of color filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2638883B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140237805A1 (en) * | 2013-02-28 | 2014-08-28 | Canon Kabushiki Kaisha | Method of manufacturing mounting member and method of manufacturing electronic component |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07271020A (en) * | 1994-03-18 | 1995-10-20 | Internatl Business Mach Corp <Ibm> | Photosensitive composition for forming black matrix, color filter substrate and liquid crystal display device using substrate thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999761A (en) * | 1982-11-30 | 1984-06-08 | Fuji Photo Film Co Ltd | Manufacture of solid-state color image-pickup element |
| JPS6039601A (en) * | 1983-08-13 | 1985-03-01 | Fuji Photo Film Co Ltd | Production of color solid-state image pickup element |
| JPS61290407A (en) * | 1985-06-18 | 1986-12-20 | Matsushita Electronics Corp | Formation of color filter |
| JPH0766083B2 (en) * | 1985-10-11 | 1995-07-19 | 三菱化学株式会社 | Organic color filter |
-
1988
- 1988-02-18 JP JP3624488A patent/JP2638883B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140237805A1 (en) * | 2013-02-28 | 2014-08-28 | Canon Kabushiki Kaisha | Method of manufacturing mounting member and method of manufacturing electronic component |
| US10381314B2 (en) * | 2013-02-28 | 2019-08-13 | Canon Kabushiki Kaisha | Method of manufacturing mounting member and method of manufacturing electronic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01210902A (en) | 1989-08-24 |
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