Display drive device and display device
US7583261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2007 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Feb 25, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0693
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A predetermined voltage is supplied to a voltage supply line connected in common to respective current paths of driving elements of each of a plurality of display pixels. Adjustment voltages based on a predetermined unit voltage are sequentially applied to a plurality of data lines connected to the display pixels. Specific values corresponding to element characteristics of the respective driving elements of the display pixels are sequentially detected based on a value of a detection value that is a potential difference between a data line and the voltage supply line or a value of a current flowing into the voltage supply line. Correction gradation voltages are generated for each pixel by correcting a gradation voltage having a voltage value corresponding to display data for the pixel based on the specific value for the pixel, so as to compensate for characteristic fluctuation of the driving element of the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.