Method of rapidly reworking color filters
US6736146B2 · kind B2 · utility
1Cited by
10References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 16, 2001 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | May 29, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/906
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of removing non-polar colorants of a color filter array rapidly from a bottom layer starts by performing a cracking process to decompose cross-linked polymeric molecules of non-polar R/G/B colorants to smaller fragments. A plasma cleaning process is performed to oxidize the cracked non-polar R/G/B colorants. Then, a solvent cleaning process is performed by using a non-polar solvent to remove the non-polar R/G/B colorants from the bottom layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.