Backlight unit and display apparatus including the same
US9852699B2 · kind B2 · utility
1Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Mar 8, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight unit includes a power converter which generates a light source power voltage at a first node in response to a voltage control signal, at least one light emitting diode string which is connected between the first node and a second node and receives the light source power voltage through the first node, and a controller connected to the second node where the controller detects current of a detection node varying based on a duty ratio of the power control signal, and controls current flowing through the second node when the detected current is greater than a reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.