Overcurrent protection circuit, display apparatus and driver circuit thereof, and overcurrent protection method
US11875713B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 17, 2021 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | May 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An overcurrent protection circuit includes: a sampling sub-circuit configured to acquire gate input signals, select a gate input signal with a voltage value greater than a first preset voltage value as a sample gate input signal, generate a first control signal according to the sample gate input signal, and output the first control signal; a delay determination sub-circuit configured to receive the first control signal, delay the first control signal for a first preset time, determine whether a voltage value of the first control signal after delay is less than a voltage value of the first control signal before the delay, and if not, output a counting signal; and a counting control sub-circuit configured to receive the counting signal, perform counting according to the counting signal, and if a counted number reaches a preset number, output a second control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.