Method for making precisely configured flakes useful in optical devices
US7238316B2 · kind B2 · utility
2Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Nov 5, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/756
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Precisely configured, especially of geometric shape, flakes of liquid crystal material are made using a mechanically flexible polymer mold with wells having shapes which are precisely configured by making the mold with a photolithographically manufactured or laser printed master. The polymer liquid crystal is poured into the wells in the flexible mold. When the liquid crystal material has solidified, the flexible mold is bent and the flakes are released and collected for use in making an electrooptical cell utilizing the liquid crystal flakes as the active element therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.