Luminance control device, display device including the same, and method of driving the same
US11107418B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2020 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Feb 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device includes a display panel including pixels, a luminance controller that divides the display panel into blocks based on coordinate information, calculates a block reference current based on a block current sensed in each of the blocks when reference images are sequentially displayed on the blocks, calculates a target current based on the block reference current and a block load of each of the blocks based on input image data, and calculates a scaling factor based on the target current and a sensing current sensed in each of the blocks when an input image corresponding to the input image data is displayed on the display panel, and a data driver that generates a data voltage corresponding to the input image data and supplies the data voltage to the pixels by adjusting a voltage level of the data voltage based on the scaling factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.