IPC Subgroup
G04G 9/12 using light valves, e.g. liquid crystals
Introduced: January 1980
Last revised: January 2006
Full Title
Visual time or date indication means > by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques > using light valves, e.g. liquid crystals
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- ELECTRONIC TIME-PIECES