Pigment dispersion solution, pigment photoresist and color filter
US8361680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2009 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jul 4, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D17/004
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a pigment dispersion solution, a pigment photoresist and a color filter. The pigment dispersion solution includes a colored pigment, a dispersant, a binder resin and a solvent, and further includes particles of white pigment. The pigment photoresist using the pigment dispersion solution of the present invention includes an alkali-soluble resin, a monomer, a photo initiator and an additive. The color filter using the pigment photoresist of the present invention includes a substrate, and the pigment photoresist is developed to be shaped in regions corresponding to pixels on the substrate. The present invention adopts a technical means that adding the particles of the white pigment into the pigment dispersion solution, thereby taking advantage of properties such as high reflectivity and diffused reflection on surface of the white pigment, so as to increase transmitting path and absorbing path of lights in the pigment dispersion solution. Therefore, when the pigment photoresist made of the pigment dispersion solution is irradiated by lights to cure, the curing speed could be improved distinctly, the curing time could be reduced and the curing effect cou…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.