Backlight unit, method of driving the same, and display device having the same
US10262610B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2016 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Nov 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0653
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a backlight unit including a backlight configured to generate light, and a backlight driving circuit configured to drive the backlight in a dimming mode on a basis of a dimming signal, the backlight driving circuit including a first comparator configured to detect a frequency of the dimming signal and to compare the frequency of the dimming signal with a reference frequency to determine a compared result, and a driver configured to selectively drive the backlight, based on the compared result, in an analog dimming mode in which a driving current of the backlight is controlled, or a mixed dimming mode by mixing the analog dimming mode and a digital dimming mode in which an on state and an off state of the backlight is controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.