Display driver IC including dithering circuit capable of adaptively changing threshold grayscale value depending on display brightness value, device including the same, and method thereof
US12277889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2023 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Oct 30, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display driver integrated circuit (IC) includes a data line driver that drives a first data line connected with a first pixel of a display in response to output image data, and a dithering circuit that receives a brightness value of the display, calculates a first reference grayscale value corresponding to the brightness value using a first group of threshold grayscale values, receives input image data with a first grayscale value, which corresponds to the first pixel, compares the first grayscale value and the first reference grayscale value, and generates the output image data having not the first grayscale value but an output grayscale value when the first grayscale value is smaller than the first reference grayscale value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.