Method for producing color filter
US5314770A · 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 an electrically conductive layer formed on a surface of a substrate, and exposing the photosensitive coating film trough a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film portion registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the electrically conductive layer and electrodepositing a colord coating on the exposed electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film followed by electrodeposition being repeated for the respective patterns of different degrees of light transmittances in sequence of difference in transmittances for producing different colored layers, respectively; (C) selectively forming a metal layer in interstices present between the colored layers, and (D) transcribing the colored layers and the metal layer onto another substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.