Display drive apparatus in which display pixels in a plurality of specific rows are set in a selected state with periods at least overlapping each other, and gradation current is supplied to the display pixels during the selected state, and display apparatus
US7944414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2005 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Sep 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0297
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display drive apparatus includes a selection circuit which sets display pixels in a plurality of specific rows of the display panel in a selected state with periods at least overlapping each other. A gradation signal generation circuit generates a gradation signal which controls a luminance gradation of each display pixel based on the display data and sequentially supplies the generated gradation signal in time series. A plurality of signal distribution circuits sequentially distribute the gradation signal supplied by the gradation signal generation circuit in accordance with the plurality of display pixels in each column at the timing of time-series supply. A plurality of current holding circuits individually hold the distributed gradation signal and simultaneously supply as the gradation current a current having a current value based on the held gradation signal to the display pixels in the plurality of specific rows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.