Color filter arrays
US4764670A · kind A · utility
68Cited by
9References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1987 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Sep 1, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/331
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color filter array is disclosed comprised of red, green, and blue filters forming an interlaid pattern. Each of the red, green, and blue filters is formed of two superimposed filter layers, each made up of a different subtractive primary dye. Layers of controlled thickness containing a single dye permit precise control of filter density and hue. The color filter array can form part of a viewable display unit or form part of an image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.