US5323052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image pickup device with wide angular response
Assignee: Sharp Corp
•
Filing: 1992-11-13
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Granted: 1994-06-21
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Expires: 2012-11-13
Abstract
Abstract Solid image pickup apparatus, wherein a light screening film is formed with the conventional art, a polyamide resin which is a transparent resin larger in refractive index than the microlens material is applied by a spin coating method, then, it is baked for 5 through 10 minutes at 200° through 250° C. so as to form a flattened film 10a, thereafter, an acrylic resin is coated by a spin coating method.
Inventors
- 👤 Eiji Koyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/80; H10F39/805; H10F39/8057; H10F39/806; H10F39/8063; H10F39/011; H10F39/024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A solid state image pickup device comprising: a plate-like semiconductor substrate; formed on one face of said substrate, a photodiode for detecting incident light; a light screening film overlying said photodiode for defining an active region thereof; overlying said light screening film, a layer of a first transparent resin providing a flat outer surface spaced from said light screening film; and formed on said outer surface of said layer in alignment with said active region, an outwardly convex micro lens formed of a second transparent resin, the refractive index of said second resin being intermediate the refractive indices of said first resin and air.
Claim 2
Dependent Claim
104 words
A solid state image pickup device comprising: a plate-like semiconductor substrate; formed on one face of said substrate, a photodiode for detecting incident light; a light screening film overlying said photodiode for defining an active region thereof; overlying said light screening film, a layer of a first transparent resin providing a flat outer surface spaced from said light screening film; and formed on said outer surface of said layer in alignment with said active region, an outwardly convex micro lens formed of a second transparent resin, the refractive index of said second resin being intermediate the refractive indices of said first resin and air.
Claim 3
Dependent Claim
19 words
A solid state image pickup device as set forth in claim 1 wherein said first resin is a polyamide.
Claim 4
Dependent Claim
19 words
A solid state image pickup device as set forth in claim 2 wherein said second resin is an acrylic.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-20 | 1997-12-20 | 1998-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-20 | 2001-12-20 | 2002-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-20 | 2005-12-20 | 2006-06-21 | $7700.00 | Window Closed / Lapsed |