Display system having two liquid crystal layers for displaying fixed and variable indicia
US5537236A · kind A · utility
5Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | May 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/023
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display system comprising a first display member overlying a second display member. Each member comprises two transparent layers (such as glass), coated with polariser and separated by a layer of liquid crystal. Each member has a set of individually actuable display elements. The display elements in the second member, and are visible through the first member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.