Backlight unit and liquid crystal display device using the same

Details Backlight unit and liquid crystal display device using the same Backlight unit and liquid crystal display device using the same

2005-08-17

2009-08-25

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S084000

Reexamination Certificate

active

07580016

ABSTRACT:
A backlight unit includes a light source part having red, green and blue light sources and a light source controller to generate a common control wave and to drive each of the red, green and blue light sources by use of a dimming signal from the outside and the common control wave. The light source controller may include a pulse width modulation controller. The common control wave may have a triangular shape. Each of the red, green and blue light sources is driven with the common triangular wave which is generated by a triangular wave generator. The size of the light source controller may be reduced and flickers may be substantially reduced.

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First Office Action issued in corresponding Chinese Patent Application No. 200510093826.8, issued on Feb. 29, 2008.
First Office Action issued in corresponding Japanese Patent Application No. 2005-297714; issued Apr. 15, 2008.
Office Action issued in corresponding Korean Patent Application No. 200510093826.8; issued Feb. 29, 2008.
Office Action issued in corresponding Japanese Patent Application No. 2005-297714; issued Sep. 9, 2008.

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