Display device and data driver
US11810527B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 4, 2022 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Jul 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure includes multiple data drivers provided for each predetermined number of data lines. Each data driver receives an image signal; generates, based on the image signal, a positive gradation data signal and a negative gradation data signal; outputs one of the positive and negative gradation data signals to one of a first and second data line groups of a display panel; and outputs the other of the positive and negative gradation data signals to the other of the first and second data line groups. The data driver shifts a phase of the negative gradation data signal in a direction delayed with respect to the positive gradation data signal, and controls a slew rate of an output amplifier for outputting the positive gradation data signal to be lower than that of an output amplifier for outputting the negative gradation data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.