Method for forming post spacers in liquid crystal display
US6927833B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Apr 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136236
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a method for forming post spacers in a liquid crystal display, which enables cell gap to be uniform by means of a half-tone mask. The method comprises the steps of: defining a active region and a dummy region in a substrate; forming a black matrix on the substrate at the outside of the active region; selectively forming a RGB resin film on the active region while selectively forming a RGB resin film on the dummy region; forming a protective film on the resulting structure; forming a photosensitive resin film on the protective film; forming a half-tone mask pattern on the photosensitive resin film; and selectively etching the photosensitive resin film using the half-tone mask pattern so as to form the post spacers having a different height.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.