LCD driver circuit
US5270696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Mar 25, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3674
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is an LCD driver circuit comprising a plurality of cascade-connected LCD drivers. The LCD driver circuit can be activated to make a latch pulse signal input thereto active on the trailing edge thereof and operated even if a corresponding clock pulse signal is input in confronting relationship during a period in which the latch pulse signal is being input. Each of the LCD drivers has a latch pulse control circuit for selecting either one of a first latch pulse signal and a second latch pulse signal generated corresponding to the first latch pulse signal in accordance with an enable signal input at the time the LCD drivers are cascaded, thereby controlling an enable latch circuit and a shift register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.