Display drive circuit and display device
US9558708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2014 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Nov 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0276
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display drive circuit includes: source amplifiers capable of driving source lines of a display panel connected thereto; preamplifiers capable of outputting first gradation voltages; source circuits each including a division of the source amplifiers, provided that the source amplifiers are divided equally; and resistance arrays. Each source circuit is provided with one of the resistance arrays. Each resistance array divides input first gradation voltages to generate second gradation voltages and provides them to the corresponding source circuit. The worsening of the capability of converging of gradation lines for supplying second gradation voltages to the source circuits can be suppressed without providing gradation-voltage-generation circuits even with a display driver IC having an increased long side length, or more than one display driver IC provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.