Solid-state image sensors and display devices having anti-reflection film
US7829908B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Nov 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/337
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Solid-state image sensors are disclosed that include an optical unit which separates incident light into a plurality of color elements, an optical receiving unit which converts each of the color elements separated by the optical unit to an electrical signal and an anti-reflection film having a high-refractive-index layer with a refractive index of 1.7 or higher and a low-refractive-index layer with a refractive index of less than 1.7. The anti-reflection film is between the optical unit for each of color elements and the optical receiving unit, on a semiconductor substrate. Each of the high-refractive-index layer and the low-refractive-index layer corresponds to at least one color element of the plurality of color elements and includes two or more layers. With such sensors it is possible to suppress the variation in sensitivity for each color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.