Color liquid crystal display apparatus
US5969784A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Jun 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13394
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color filter substrate has a substrate structure, spacers which include a first spacer layer and a plurality of second spacer layers. Each of the second spacer layers has a sectional plane which is substantially parallel to the substrate structure. And the sectional plane has a entire projective area of the first spacer layer therein and an elongated portion from the projective area, so that an area of effective thickness of the spacer to maintain the gap between two substrates depends on an area of a smaller of the first and second surfaces of the first spacer layer. In other words, the outline of the first spacer layer is located so as to be entirely included within the outline of these second spacer layers. If the central axis of the first spacer layer is shifted from that of the second spacer layers in the manufacturing process of the liquid crystal display apparatus, misalignment between first and second spacer layers occurs. The degree of the misalignment depends on the accuracy of the photo-etching technique. On account of the portion, above misalignment is absorbed and the first spacer layer is entirely located on the second spacer layers. In this occasion, the effective …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.