Method for producing color filter
US5527648A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 9, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Dec 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133516
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming on the photosensitive coating film a first region where a light irradiation amount is different in two steps; (c) developing a light-irradiated portion of the first region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (d) forming on the remaining photosensitive coating film a second region where a light irradiation amount is different in two steps; (e) developing a light-irradiated portion of the second region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (f) removing the remaining photosensitive coating film not developed in the steps (c) and (e); (g) forming a positive or negative photosensitive coating film on the transparent substrate; (h) forming on the photosensitive coating film formed in the step (g) a third region where a light irradiation amount is different in at least three steps; and (i) developing the third region to lay-open the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.