Gate driver on array short-circuit protection circuit and liquid crystal panel including the same
US9841649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2015 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The short-circuit protection circuit for a Gate Driver on Array (GOA) liquid crystal panel contains a power module, a first booster module, a feedback module, and a second booster module series-connected in the this order. A control module is electrically connected to the first booster, feedback, and second booster modules. The power module provides a power voltage. The control module provides a pulse width modulation (PWM) signal so as to control the first and second booster modules to transform the power voltage into driving voltage. The feedback module extracts a feedback current from a current flowing from the first to the second booster module and provides a feedback signal to the control module. When the feedback current exceeds a current threshold, the control module cuts off the PWM signal output so as to achieve short-circuit protection. A liquid crystal panel incorporating the above short-circuit protection circuit is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.