Liquid crystal display wrist watch
US4083177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1974 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Sep 24, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/0035
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid crystal display wrist watch is disclosed which comprises a supporting frame secured to a wrist watch substrate. The frame has two perpendicularly crossing supporting surfaces which cooperate with two corresponding reference sides of a liquid crystal cell to determine the position of exterior electrodes of the liquid crystal cell and segment electrodes of an electronic circuit. A holding frame plate is used for detachably urging the liquid crystal against the suppporting frame. A boundary plate and color filter are each sandwiched between a movement and a protective glass cover. A portion is provided for determining the position of the holding frame plate, with respect to either to the movement or an outer case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.