Black curable composition, light-shielding color filter for a solid-state imaging device and method of producing the same, solid-state imaging device, wafer level lens, and camera module
US8828629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Apr 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A black curable composition for forming a light-shielding color filter of solid-state imaging device is provided, which is capable of forming a pattern at low exposure dose even when containing a high concentration of an inorganic pigment, and preventing pattern defects. Also, a black curable composition for a wafer level lens is provided, which is capable of forming a cured film having excellent light shieldability and excellent in co-formability of both a large pattern and a fine pattern. The composition includes: an inorganic pigment; a copolymer containing a monomer having at least one of an amino group and a nitrogen-containing heterocyclic group, a monomer having at least one group of a carboxyl group, a phosphate group and a sulfonate group, and a macromonomer having a weight average molecular weight from 1,000 to 50,000; a polymerization initiator; a polymerizable compound; and an alkali-soluble resin having an unsaturated double bond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.