Source driver having charge share line connecting output lines and display apparatus
US12394390B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2024 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Mar 12, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A source driver includes: output amplifiers, supplying pixel drive voltages to source lines of a display device based on a video signal; a charge share line, having a charge share switch able to connect output lines outputting the pixel drive voltages; a common voltage line, connected to a common voltage electrode of the display device; a first power supply line, supplying a first voltage; a switch part, able to connect the charge share line and the common voltage line with the first power supply line; and a control part, including a power off detection circuit that detects stoppage of supply of the first voltage. When it is detected that the first power supply line is off, the control part short-circuits the source lines by the charge share line and connects the charge share line and the common voltage line with the first power supply line by the switch part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.