Solid state image sensor provided with a transparent resin layer having water repellency and oil repellency and flattening a surface thereof
US5479049A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1993 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Sep 15, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
Abstract
A first transparent protection layer is formed on color filters, and micro lenses are further formed on the first transparent protection layer. Then unevenness due to the micro lenses is flattened by a first transparent resin layer which has water repellency and oil repellency (low surface energy), a high transmittance in visible light range, a high flattening capability in a coating process, and a refractive index lower than the refractive index of the micro lenses. With the above-mentioned arrangement, dust or the like can be difficult to contaminate the surface of the solid state image sensor without loosing the light converging effect of the micro lenses. Even when dust or the like attaches to the surface, it can be easily removed with a cotton swab or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.