Shading film for color filter and coating for forming shading film
US5512215A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Jun 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133512
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are a shading film formed on a transparent substrate for forming a color filter, and a shading coating for forming the shading film. The shading film is made up of particles of a material with a layered lattice structure. The maximum diameter of the particles is 3 .mu.m or less, with the average diameter in the 0.05 .mu.m to 0.08 .mu.m range, and 40 to 95 wt % of the particles have a diameter of 0.1 .mu.m or less. The average aspect ratio of the particles is 10/1 or greater. The shading coating contains: a particulate material with a layered lattice structure and satisfying the characteristics relating to the particle size described above; and a dispersion medium for dispersing the particulate material. Water is used as the dispersion medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.