Backlight driving method
AssigneeLG. Philips LCD Co., Ltd.
InventorsHyun-Suk Jin, In-Jue Kim, Deuk-Su Lee
Life of this patent
Estimating the term…
Abstract
A method of driving a backlight unit is provided. The backlight includes a plurality of lamps sequentially turned on/off. Each of the plurality of lamps is periodically turned on for a predetermined period. The method includes applying a first lamp current to one of the plurality of lamps for a first time period within the predetermined period so that the one of the plurality of lamps emits light with a first brightness, and applying a second lamp current to the one of the plurality of lamps for a second time period within the predetermined period so that the one of the plurality of lamps emits light with a second brightness.
Claims18
A method of driving a backlight unit, the backlight unit including a plurality of lamps sequentially turned on/off, each of the plurality of lamps being periodically turned on for a predetermined period, the method comprising:
- applying a first lamp current to one of the plurality of lamps for a first time period within the predetermined period so that the one of the plurality of lamps emits light with a first brightness;
- and
- applying a second lamp current to the one of the plurality of lamps for a second time period within the predetermined period so that the one of the plurality of lamps emits light with a second brightness,
- wherein the first time period includes a first time segment and a second time segment, and the first time segment and the second time segment are separated by the second time period.
A method of driving a backlight unit of a liquid crystal display device, the liquid crystal display device including the backlight unit, first and second substrates facing each other, and a liquid crystal layer between the first and second substrates, the backlight unit including a plurality of lamps sequentially turned on/off, each of the plurality of lamps being periodically turned on for a predetermined period, the method comprising:
- applying a first lamp current to one of the plurality of lamps for a first time period within the predetermined period so that the one of the plurality of lamps emits light with a first brightness;
- and
- applying a second lamp current to the one of the plurality of lamps for a second time period within the predetermined period so that the one of the plurality of lamps emits light with a second brightness,
- wherein the first time period includes a first time segment and a second time segment, and the first time segment and the second time segment are separated by the second time period.
A method of driving a backlight unit of a liquid crystal display device, the backlight unit having a plurality of lamps, each of the plurality of lamps being periodically turned on for a predetermined period, the method comprising:
- applying a current of a first level to one of the plurality of lamps;
- and
- increasing the current applied to the one of the plurality of lamps from the first level to a second level for a time period within the predetermined period upon completion of a response of a liquid crystal layer of the liquid crystal display device corresponding to the one of the plurality of lamps.
Dependencies are inferred from the claim text.