Liquid crystal display with image storage ROM
US5623277A · kind A · utility
11Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1996 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Jan 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An IC driver mounted on a LCD display package contains a sensor for determining temperature of the LCD cell, and a digital value of the temperature is serially transmitted to a remote microprocessor which determines compensated voltage and sends voltage command data back to the IC driver which produces a drive voltage by a charge pump. A digital code on the LCD cell identifies cell response characteristics and the code is used by the microprocessor to calculate the desired voltage. A ROM in the IC driver stores many bit-mapped images which are selected by the microprocessor for display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.