Shift register useful as a select line scanner for a liquid crystal display
US5410583A · kind A · utility
108Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1994 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Aug 11, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0286
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A select line scanner for a liquid crystal display includes a plurality of cascaded stages each having an input terminal and an output terminal. Each stage includes a push-pull output circuit including pull up and pull down transistors driven with separate control signals. A further transistor has its conduction path coupled between the control electrode and a point of potential of sufficient value to turn the pull up transistor off. The control electrode of the further transistor is coupled to an output of a succeeding one of the cascaded stages to insure that the output of the respective stage cannot drift to an on state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.