JP4834412B2 - 固体撮像装置およびこれを用いた電子内視鏡 - Google Patents
固体撮像装置およびこれを用いた電子内視鏡 Download PDFInfo
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Description
本実施の形態の固体撮像装置2は、図1に示すように、基板3と、固体撮像素子4と、枠体5とを備えている。なお、同図において、Mは封止樹脂部を示す。
この固体撮像素子4は、図2(a)に断面図、図2(b)に要部拡大断面図を示すように、つまり前述したように、固体撮像素子基板4A表面に、シリコン基板401の受光領域に相当して空隙Cをもつようにスペーサ403を介してガラス基板404が接合されているとともに、シリコン基板401の周縁がダイシングによって個別に分離され、ガラス基板404から露呈する周縁部のシリコン基板401表面に形成されたボンディングパッドBPを介して、外部回路(図示せず)との電気的接続がなされるように構成されている。ここでスペーサ403は、10〜500μm、好ましくは80〜120μmの高さとする。
次に、同図(b)に示すように、適宜の手段、例えば周知のCMP(Chemical Mechanical Polishing;化学機械的研磨)法などによりシリコン基板403を所望の厚さまで薄片・平坦化させる。
即ち、本実施の形態では、初めに、同図(a)に示すように、シリコン基板403の全面にマスクレジストR1を塗布する。次に、所望のパターンを形成したフォトマスクF1(本実施の形態ではポジ型を使用するが、勿論、ネガ型でもよい)で露光を行い(同図(b))、その後、現像することにより、必要なスペーサに対応する部分を除く領域のマスクレジストR1を除去する(同図(c))。次に、ドライエッチングを行い、マスクレジストR1が塗布された領域以外のシリコン基板403及び接着剤層405を除去する(同図(d))。
400はダイシングで形成される切断溝である。
即ち、初めに、図7に示す固体撮像素子4と基板3とを適宜の接着剤、例えば紫外線硬化型接着剤(例えば、カチオン重合性硬化接着剤)を用い、UV光源からの紫外線を照射して接合させる。次に、ワイヤボンダにより、固体撮像素子4側のボンディングパッドBPと基板3側の電極31とを金線などのボンディングワイヤBYで接続する。次に、ボンディングパッドBPと基板3側の電極31とを含む領域を絶縁性の樹脂、例えば熱硬化型エポキシ樹脂などにより被覆させ、絶縁性を確保した封止樹脂部Mを形成する(図1参照)。
また、本実施の形態によれば、固体撮像素子4の周囲の枠体5との間の隙間Sは耐湿性を持つ封止樹脂部Mで封止しており、固体撮像素子4について耐湿性を確保しているので、湿度や水分の多い場所で使用する場合であっても、電気的な故障や漏電などの虞がなく、信頼性の高いものが実現可能となる。しかも、本実施の形態では、固体撮像素子4の周囲の枠体5との間の隙間Sを封止する樹脂として、特に熱硬化型エポキシ樹脂を用いることで、その樹脂で封止された隙間部分は、硬化時に体積収縮が少なく、強度と強靱性に優れ、硬化後は溶剤そのほかに対する耐薬品性が非常によいなどの各種特性が得られるようになる。
図8は本発明の第2の実施の形態に係る固体撮像装置を設けた直視型の電子内視鏡を示すものであり、この電子内視鏡は、内視鏡本体1の先端部10の内部に、第1の実施の形態の固体撮像装置2を設置している。
また、本実施の形態によれば、固体撮像素子4と基板3との間の電気的な接続部分の防水性とともに固体撮像素子4の耐湿性が得られるので、例えば生体観察用の内視鏡装置に用いる場合などには、電気的な故障や漏電などの虞がなく、信頼性を向上させることができる。
なお、本実施の形態では、固体撮像装置2を直視型の電子内視鏡に適用した構成であるが、勿論、側視型の電子内視鏡に適用することも勿論可能である。
10 先端部
11 観察窓
12 対物レンズ
13 プリズム
1A 観察チャンネル
14 鉗子孔
15 鉗子窓
2 固体撮像装置
3 基板
31 電極
4 固体撮像素子
4A 固体撮像素子基板
4B カバーガラス
4a〜4c (固体撮像素子の)外周面
400 切断溝
401 シリコン基板
402 固体撮像素子本体(本体部、CCD)
403 スペーサ
404 ガラス基板
405 接着剤層
446 フィルタ層
446R 赤色フィルタ層
446G 緑色フィルタ層
446B 青色フィルタ層
450 マイクロレンズ
5 枠体
5a〜5c (枠体の)内周面
BY ボンディングワイヤ(引出線)
BP ボンディンパッド
M 封止樹脂部
Claims (5)
- 固体撮像素子基板に固体撮像素子本体を搭載した固体撮像素子と、
一面に電極を設けた板状の基板であって、その一端面が前記固体撮像素子の一端面側に固着された板状の基板と、
前記板状の基板に接合一体化されるコの字形状の枠体と、
封止樹脂部と、を備え、
前記板状の基板の一面に設けた電極は、前記固体撮像素子の一面に設けられたパッドから引出したボンディングワイヤと電気的に接続されており、
前記枠体は、前記固体撮像素子の前記板状の基板に固着された一端面を除く外周面を囲設しており、
前記封止樹脂部は、前記板状の基板の前記一面の前記電極を含む所定部位から前記固体撮像素子の前記一面の前記パッドを含む所定部位に至るまでの領域を被覆している固体撮像装置。 - 請求項1に記載の固体撮像装置であって、
前記固体撮像素子と前記枠体との間には隙間が形成されているとともに、
前記固体撮像素子と前記枠体との間の前記隙間が耐湿性の樹脂で封止された固体撮像装置。 - 請求項2に記載の固体撮像装置であって、
前記樹脂は、熱硬化型エポキシ樹脂である固体撮像装置。 - 請求項1乃至3のいずれかに記載の固体撮像装置であって、
前記枠体は、金属板で構成された固体撮像装置。 - 請求項1乃至4のいずれかに記載の固体撮像装置を、内視鏡装置の先端内部又は先端側部に設けた電子内視鏡装置。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006027705A JP4834412B2 (ja) | 2006-02-03 | 2006-02-03 | 固体撮像装置およびこれを用いた電子内視鏡 |
| KR1020070010946A KR101286099B1 (ko) | 2006-02-03 | 2007-02-02 | 고체 촬상 장치 및 그것을 사용하는 전자 내시경 |
| EP07002297.5A EP1816678B1 (en) | 2006-02-03 | 2007-02-02 | Solid-state imaging device and electronic endoscope using the same |
| US11/702,221 US7692710B2 (en) | 2006-02-03 | 2007-02-05 | Solid-state imaging device and electronic endoscope using the same |
| CN2007100080237A CN101013714B (zh) | 2006-02-03 | 2007-02-05 | 固态成像装置和使用其的电子内诊镜 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006027705A JP4834412B2 (ja) | 2006-02-03 | 2006-02-03 | 固体撮像装置およびこれを用いた電子内視鏡 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2007202921A JP2007202921A (ja) | 2007-08-16 |
| JP2007202921A5 JP2007202921A5 (ja) | 2008-12-04 |
| JP4834412B2 true JP4834412B2 (ja) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006027705A Active JP4834412B2 (ja) | 2006-02-03 | 2006-02-03 | 固体撮像装置およびこれを用いた電子内視鏡 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7692710B2 (ja) |
| EP (1) | EP1816678B1 (ja) |
| JP (1) | JP4834412B2 (ja) |
| KR (1) | KR101286099B1 (ja) |
| CN (1) | CN101013714B (ja) |
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| US11792538B2 (en) | 2008-05-20 | 2023-10-17 | Adeia Imaging Llc | Capturing and processing of images including occlusions focused on an image sensor by a lens stack array |
| EP3328048B1 (en) | 2008-05-20 | 2021-04-21 | FotoNation Limited | Capturing and processing of images using monolithic camera array with heterogeneous imagers |
| JP5532881B2 (ja) * | 2009-04-10 | 2014-06-25 | 株式会社リコー | 撮像装置、車載撮像装置、撮像装置の製造方法及び製造装置 |
| JP5453947B2 (ja) * | 2009-06-17 | 2014-03-26 | ソニー株式会社 | 固体撮像素子の製造方法 |
| JP5303414B2 (ja) * | 2009-09-25 | 2013-10-02 | 富士フイルム株式会社 | 撮像装置及び内視鏡 |
| US8514491B2 (en) | 2009-11-20 | 2013-08-20 | Pelican Imaging Corporation | Capturing and processing of images using monolithic camera array with heterogeneous imagers |
| SG10201503516VA (en) | 2010-05-12 | 2015-06-29 | Pelican Imaging Corp | Architectures for imager arrays and array cameras |
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| JP5395829B2 (ja) * | 2011-02-25 | 2014-01-22 | 富士フイルム株式会社 | 内視鏡装置 |
| CN107404609B (zh) | 2011-05-11 | 2020-02-11 | 快图有限公司 | 用于传送阵列照相机图像数据的方法 |
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| CN104081414B (zh) | 2011-09-28 | 2017-08-01 | Fotonation开曼有限公司 | 用于编码和解码光场图像文件的系统及方法 |
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| GB201202128D0 (en) | 2012-02-08 | 2012-03-21 | Univ Leeds | Novel material |
| WO2013126578A1 (en) | 2012-02-21 | 2013-08-29 | Pelican Imaging Corporation | Systems and methods for the manipulation of captured light field image data |
| US9210392B2 (en) | 2012-05-01 | 2015-12-08 | Pelican Imaging Coporation | Camera modules patterned with pi filter groups |
| JP5941753B2 (ja) * | 2012-05-28 | 2016-06-29 | 富士フイルム株式会社 | 電子内視鏡装置及び撮像モジュール並びに撮影レンズモールド方法 |
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