Method for controlling operations of a backlight unit of a liquid crystal display

• US 20070211016A1
• Filed: 05/16/2007
• Published: 09/13/2007
• Est. Priority Date: 06/16/2004
• Status: Abandoned Application

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Hung, Hsin-Cheng, YANG, MING-TA
• Application Number:
  US11/749,155
• Publication Number:
  US 20070211016A1
• Time in Patent Office: Days
• US Class Current: 345/102
• CPC Class Codes: G09G 2310/024 Scrolling of light from the illumination source over the display in combination with the scanning of the display screen
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 3/342 using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A method for controlling operations of a backlight unit of a liquid crystal display (LCD) is disclosed. The LCD includes a LCD panel and the backlight unit. The LCD panel has a plurality of display units. The backlight unit is placed behind the LCD panel and has a plurality of illumination devices for providing light to the LCD panel. The method includes: (a) keeping at least two of the illumination devices turned on at all times; (b) turning off one of the illumination devices every predetermined time interval; and (c) turning on one of the illumination devices every predetermined time interval.

Claims

1. A method for controlling operations of a backlight unit of a liquid crystal display, wherein the liquid crystal display comprises a liquid crystal display panel and a backlight unit having a plurality of illumination devices, the method comprising:

keeping at least two of the illumination devices turned on at any time;

turning on one other illumination device after a predetermined time interval; and

turning off one of the two illumination devices previously being turned on.

2. The method of claim 1 further comprising turning on the other illumination device after a predetermined time interval while turning off one of the two illumination devices previously being turned on.

3. A method for controlling operations of a backlight unit of a liquid crystal display, wherein the liquid crystal display comprises a liquid crystal display panel and a backlight unit having a plurality of illumination devices, the method comprising:

turning on at least one of the illumination devices at any time; and

turning on one other illumination device before turning off the one previously being turned on.

4. A method for improving blurring of moving images for a liquid crystal display, wherein the liquid crystal display comprises a liquid crystal display panel and a backlight unit having a plurality of illumination devices, the method comprising:

keeping at least two of the illumination devices turned on at any time;

turning off one of the illumination devices during every predetermined time interval; and

turning on one of the illumination devices during every predetermined time interval.