JPH01202089A - Color image pickup device - Google Patents
Color image pickup deviceInfo
- Publication number
- JPH01202089A JPH01202089A JP63026134A JP2613488A JPH01202089A JP H01202089 A JPH01202089 A JP H01202089A JP 63026134 A JP63026134 A JP 63026134A JP 2613488 A JP2613488 A JP 2613488A JP H01202089 A JPH01202089 A JP H01202089A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- film
- state imaging
- imaging device
- color
- 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
Links
Landscapes
- Optical Filters (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、カラー固体撮像装置に関し、さらに詳しくは
、赤外線カットフィルタを内蔵したカラー固体撮像装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color solid-state imaging device, and more particularly to a color solid-state imaging device incorporating an infrared cut filter.
従来の技術
従来のカラー固体撮像装置について図面を参照しながら
説明する。2. Description of the Related Art A conventional color solid-state imaging device will be described with reference to the drawings.
第２図は従来のカラー固体撮像装置を示すものである。FIG. 2 shows a conventional color solid-state imaging device.
１は半導体基板である。２は半導体基板１内に設けられ
たＰＮ接合フォトダイオードである。３は層間絶縁膜で
ある。４はカラーフィルタの役目をなす染色膜でゼラチ
ン、カゼインなどを酸性染料により着色を施すことで形
成され、イエロー（４Ｙｅ）、シアン（４Ｃｙ）、マゼ
ンｌ（４Ｙｅ）で構成されている。６は中間膜で新たに
染色膜を形成するため酸性染料で着色する際に、すでに
染色を行なった部分が再度染色されないだめに設けられ
る。６はカラー固体撮像装置全体を保護するだめの保護
膜である。７は赤外線カットフィルタである。以上のよ
うな構成によりカラー固体撮像装置は形成されている。1 is a semiconductor substrate. 2 is a PN junction photodiode provided within the semiconductor substrate 1. 3 is an interlayer insulating film. 4 is a dyed film that serves as a color filter, and is formed by coloring gelatin, casein, or the like with an acid dye, and is composed of yellow (4Ye), cyan (4Cy), and magenta (4Ye). Reference numeral 6 is an intermediate film, which is provided to prevent the already dyed portion from being dyed again when coloring with an acid dye to form a newly dyed film. 6 is a protective film that protects the entire color solid-state imaging device. 7 is an infrared cut filter. A color solid-state imaging device is formed with the above configuration.
発明が解決しようとする課題
可視光に比べ赤外線は半導体基板の深部まで透光し、深
部で電荷を発生させ、この電荷が偽信号となり、固体撮
像装置の特性を大きく損なう。そのために赤外線カット
フィルタ７が設けられているがカラー固体撮像装置の外
に付けられるため。Problems to be Solved by the Invention Compared to visible light, infrared rays penetrate deeper into a semiconductor substrate and generate charges there, which become false signals and greatly impair the characteristics of solid-state imaging devices. For this purpose, the infrared cut filter 7 is provided, but it is attached to the outside of the color solid-state imaging device.
小型化、軽量化を十分に満しているものではなかった。It did not fully meet the requirements for miniaturization and weight reduction.
本発明は上記の欠点を解決するためになされたもので従
来の赤外線カットフィルタを外付けすることなく、カラ
ー固体撮像装置の赤外線による影響を防ぎ実用にたるカ
ラー固体撮像装置を提供するものである。The present invention has been made to solve the above-mentioned drawbacks, and it is an object of the present invention to provide a color solid-state imaging device that can be used practically by preventing the influence of infrared rays on the color solid-state imaging device without externally attaching a conventional infrared cut filter. .
課題を解決するだめの手段
本発明のカラーフィルタは、中間膜、保護膜に用いる透
光性アクリル系樹脂に赤外線吸収剤を分散させた樹脂を
用いることにより構成されている。Means for Solving the Problems The color filter of the present invention is constructed by using a resin in which an infrared absorber is dispersed in a translucent acrylic resin used for the intermediate film and the protective film.
作用
この構成によって、中間膜、保護膜が従来の役目の他に
赤外線カットフィルタとしての役目もすることから、赤
外線カラーフィルタを別途に設けることなく、赤外線カ
ット機能も備えたカラー固体撮像装置となる。Function: With this configuration, the interlayer film and protective film also serve as an infrared cut filter in addition to their conventional role, making it possible to create a color solid-state imaging device that also has an infrared cut function without the need for a separate infrared color filter. .
実施例
以下に、本発明の一実施例について図面を参照しながら
説明する。EXAMPLE An example of the present invention will be described below with reference to the drawings.
第１図は、本発明の一実施例のカラーフィルタを示すも
のである。FIG. 1 shows a color filter according to an embodiment of the present invention.
１ｏは、半導体基板である。１１は、半導体基板１ｏ内
に設けられたＰＭ接合フォトダイオードである。１２は
、層間絶縁膜である。１３は、カラーフィルタの役目を
なす染色膜でゼラチン、カゼインなどを酸性染料により
着色を施すことで形成され、イエロー染色膜（１３Ｙｅ
）、シアン染色膜（１００Ｍ）、？ゼンタ染色膜（１３
Ｙｅ）で構成されている。１４は中間膜で新だに染色膜
を形成するために酸性染料で染色をする際に、すでに着
色されている部分がふたたび染色されないために設けら
れている。ここで用いる中間膜材料として。1o is a semiconductor substrate. 11 is a PM junction photodiode provided within the semiconductor substrate 1o. 12 is an interlayer insulating film. 13 is a dyed film that acts as a color filter, and is formed by coloring gelatin, casein, etc. with an acid dye.
), cyan dyed membrane (100M), ? Zenta dyed film (13
Ye). 14 is provided to prevent the already colored portion from being dyed again when the intermediate film is dyed with an acid dye to form a newly dyed film. As an interlayer film material used here.
たとえば、透光性熱硬化型塗膜材料が用いられ、赤外線
カットフィルタの働きをもたせるため赤外線吸収材料が
用いられている。上記の透光性熱硬化型塗膜材料に必要
する赤外線吸収量に応じた量だけ赤外線吸収材料を含ま
せておく。１５は、カラー固体撮像装置全体を保護する
だめの保護膜である。保護膜に用いる材料についても上
記の透光性熱硬化型塗膜材料に赤外線吸収材料を含ませ
た樹脂である。For example, a translucent thermosetting coating material is used, and an infrared absorbing material is used to function as an infrared cut filter. The above-mentioned translucent thermosetting coating material contains an infrared absorbing material in an amount corresponding to the required amount of infrared absorption. 15 is a protective film that protects the entire color solid-state imaging device. The material used for the protective film is also a resin obtained by adding an infrared absorbing material to the above-mentioned translucent thermosetting coating material.
以上のように構成されたカラー固体撮像装置では、中間
膜１４．保護膜１６が膜内に含まれている赤外線吸収材
料により１本来の中間膜、保護膜としての機能をはだす
だけでなく赤外線カットフィルタとしての機能も合せ持
つ。そのため、従来、外付けされていた赤外線カットフ
ィルタが必要なく、小型化、軽量化が可能となる。In the color solid-state imaging device configured as described above, the intermediate film 14. Due to the infrared absorbing material contained therein, the protective film 16 not only functions as an intermediate film and a protective film, but also functions as an infrared cut filter. Therefore, there is no need for an infrared cut filter, which was conventionally attached externally, and the device can be made smaller and lighter.
なお、本発明の一実施例では、中間膜、保護膜の両方の
膜中に赤外線吸収材料を含ませたが、赤外線カットフィ
ルタの機能の度合に応じて赤外線吸収材料を含ませた膜
の組合せは自由に変更できる。また、本発明は、カラー
フィルタを設けない白黒用固体撮像装置にも赤外線吸収
材料を含む透光性熱硬化型塗膜材料を塗布し膜形成する
ことにより赤外線カットフィルタを内蔵した白黒用固体
撮像装置にすることが可能である。また、本実施例では
、中間膜、保護膜の塗膜材料として透光性熱硬化型塗膜
材料を用いているが、たとえば透光性光硬化型塗膜材料
など別種の塗膜材料を用いてもよい。In one embodiment of the present invention, an infrared absorbing material is contained in both the intermediate film and the protective film, but combinations of films containing infrared absorbing materials may be used depending on the degree of function of the infrared cut filter. can be changed freely. The present invention also provides a monochrome solid-state imaging device with a built-in infrared cut filter by coating and forming a film with a translucent thermosetting coating material containing an infrared absorbing material, even in a monochrome solid-state imaging device that does not have a color filter. It is possible to make it into a device. In addition, in this example, a translucent thermosetting coating material is used as the coating material for the intermediate film and the protective film, but a different type of coating material such as a translucent photocuring coating material may be used. You can.
発明の詳細
な説明したように本発明では、従来の欠点であっだ外付
けを必要とする赤外線カットフィルタを中間膜および保
護膜を形成する塗膜材料中に赤外線吸収材料を含ませる
ことでカラー固体撮像装置に内蔵し、実用に足るカラー
固体撮像装置を可能とした。したが−て、本発明の男う
−固体撮像装置に与える効果は大なるものがある。DETAILED DESCRIPTION OF THE INVENTION As described in detail, in the present invention, the conventional infrared cut filter, which requires external attachment, can be replaced with a color filter by incorporating an infrared absorbing material into the coating material forming the intermediate film and protective film. Built into a solid-state imaging device, it has become possible to create a color solid-state imaging device that is suitable for practical use. Therefore, the present invention has a great effect on the solid-state imaging device.
第１図は、本発明の一実施例のカラー固体撮像装置の断
面図、第２図は、従来のカラー固体撮像装置の断面図で
ある。
１０・・・・・・半導体基板、１３Ｙｅ１１３Ｃｙ、１
３Ｍｇ・・・・・・着色膜、１４・・・・・・中間膜２
１５・・・・・・保護膜。FIG. 1 is a sectional view of a color solid-state imaging device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional color solid-state imaging device. 10... Semiconductor substrate, 13Ye113Cy, 1
3Mg...Colored film, 14...Intermediate film 2
15...Protective film.
Claims (1)
成された中間膜、保護膜を組み合わせて形成されたカラ
ーフィルタを有することを特徴とするカラー固体撮像装
置。A color solid-state imaging device characterized by having a color filter formed by combining a dyed film, an intermediate film formed from a polymeric material containing an infrared absorbing material, and a protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026134A JPH01202089A (en) | 1988-02-05 | 1988-02-05 | Color image pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026134A JPH01202089A (en) | 1988-02-05 | 1988-02-05 | Color image pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01202089A true JPH01202089A (en) | 1989-08-15 |
Family
ID=12185083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63026134A Pending JPH01202089A (en) | 1988-02-05 | 1988-02-05 | Color image pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01202089A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6373204A (en) * | 1986-09-17 | 1988-04-02 | Mitsubishi Electric Corp | Color image pickup element |
-
1988
- 1988-02-05 JP JP63026134A patent/JPH01202089A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6373204A (en) * | 1986-09-17 | 1988-04-02 | Mitsubishi Electric Corp | Color image pickup element |
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