LCD driver
US6275209A · kind A · utility
16Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1998 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Apr 23, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An LCD driver does not require an extra step for contrast adjustment of an LCD in the assembly process of an appliance such as a portable phone that is fitted with an LCD; nor does it require the microcomputer to which it is connected to perform extra operations for contrast adjustment. This LCD driver drives a dot-matrix LCD in accordance with display data fed from a microcomputer, and includes a rewritable nonvolatile data-storage circuit for storing data concerning an electronic variable resistor for setting contrast of the LCD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.