Liquid crystal display and its manufacturing method
US6853435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jan 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0491
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display includes two substrates and a liquid crystal layer sandwiched between the substrates and performs display by changing the orientation of the liquid crystal layer from a splay orientation to a bend orientation. Application of a voltage of less than a threshold voltage to the liquid crystal layer allows the liquid crystal layer to have a region where liquid crystal molecules parallel to the substrates predominantly lie on one substrate side and a region where those liquid crystal molecules predominantly lie on the other substrate side, and the two regions are present in substantially equal proportions. In a similar liquid crystal display, the absolute value of a pretilt angle of the liquid crystal molecules in the vicinity of one substrate differs from the absolute value of a pretilt angle of the liquid crystal molecules in the vicinity of the other substrate, and at least one of the substrates is provided with a bend transition nucleus induction means. As a method for making a difference between the pretilt angles, alignment films made of the same material are formed on the substrates, and then only one of the substrates is subjected to an alignment process …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.