LED failure detecting device
US10117304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting diode (LED) failure detecting device is operatively associated with an LED array, and includes a driving circuit and a determining circuit. The driving circuit is used to be coupled to scan lines and data lines of the LED array, and drives, based on a first control input corresponding to selection of one of LED units of the LED array, the LED units in such a way that a current flows through said one of the LED units. The determining circuit generates, based at least on the voltages respectively at the data lines and on a second control input corresponding at least to selection of the data line that is coupled to said one of the LED units, a determination output that indicates whether said one of the LED units is determined to have failed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.