Display apparatus and protection circuit thereof
US10741112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2018 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Apr 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A protection circuit is disclosed, applied to a display apparatus. The display apparatus includes a voltage level shifter and a plurality of clock signal lines coupled to the voltage level shifter. The protection circuit includes a plurality of switches. At least one of the switches includes a control terminal, an input terminal, and an output terminal. The control terminal is coupled to a first clock signal line in the clock signal lines. The input terminal is coupled to a second clock signal line in the clock signal lines. The control terminal determines, according to a first clock signal provided by the first clock signal line, whether to conduct the input terminal and the output terminal, and the output terminal outputs a second clock signal provided by the second clock signal line. The output terminals of the switches are coupled to a node, and when the first clock signal line and the second clock signal line are short-circuited, the first clock signal and the second clock signal are pulled down as low-level signals, and the node outputs a protection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.