Method for producing color filter
US5314769A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0007
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a color filter involves (A) forming a photosensitive coating film on a transparent electrically conductive layer formed on a surface of a transparent substrate and exposing the photosensitive coating film through a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film region registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the transparent electrically conductive layer and electrodepositing a colored coating on the exposed transparent electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film and electrodepositing the colored coating being repeated for the respective patterns of different degrees of light transmittances in sequence of difference in light transmittances to form different colored layers, respectively; and (C) selectively forming a metal layer on at least one exposed region of the transparent electrically conductive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.