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Backlight unit driving apparatus and method thereof

A device and backlight technology, applied in the field of backlight unit driving devices, can solve problems such as limitation, cost increase, and screen brightness reduction

Inactive Publication Date: 2008-11-05
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, screens using conventional CCFLs or LEDs are dimmed during backlight scanning
Although the CCFL or LED is continuously illuminated, the illumination time of the backlight becomes shorter during the backlight scan, so the average luminosity decreases, making the brightness of the screen lower
[0009] Increased power can be supplied to the backlight to compensate for the above, but is limited due to degraded light source efficiency
Optionally, the number of backlights can be increased, but this leads to an increase in cost

Method used

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  • Backlight unit driving apparatus and method thereof
  • Backlight unit driving apparatus and method thereof
  • Backlight unit driving apparatus and method thereof

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Embodiment Construction

[0039] Matters defined in the description, such as detailed construction and elements, are provided to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0040] Figure 2A and Figure 2B A backlight unit driving device according to a first exemplary embodiment of the present invention is shown.

[0041] Referring to FIG. 2A, the backlight unit driving device includes a backlight unit 100, first to nth charging circuits 110-1, 110-2, . . . , 110-n, a first switch unit 130, a discharge initiation (initiating) unit 150 and a drive control unit 180.

[0042] The backlight unit 100 includes first to nth flashlights 100-1, 100-2, . . . ,...

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Abstract

A backlight unit driving apparatus is provided. The backlight unit driving apparatus includes a plurality of flash lamps (100-1,100-2,100-n) at a backlight unit (100) to supply light to a liquid crystal panel, supplies voltage necessary for discharge, and supplies a discharge initiating voltage so that the flash lamps can emit lights in a sequential order. Accordingly, motion picture characteristics improve, and good screen brightness is maintained.

Description

technical field [0001] The present invention relates to a backlight unit driving device and method thereof. More particularly, the present invention relates to a backlight unit driving apparatus and method thereof that divides an illumination area of ​​a backlight unit into a plurality of rows and sequentially lights up the divided rows. Background technique [0002] Images are displayed using a display device such as a liquid crystal display (LCD) in an apparatus such as a TV, a laptop computer, or a desktop computer. Because displays such as LCD panels do not emit light themselves, these displays typically utilize light from an independent light source to display images. Accordingly, the LCD uses a backlight unit at the rear side of the LCD panel, and displays images while adjusting transmittance of light emitted from the backlight unit. [0003] Specifically, when displaying an image, the LCD moves liquid crystal molecules to change an aperture ratio of a unit cell duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/34H05B41/36G02F1/13357G02F1/1335
CPCH05B41/2881G09G3/3406Y02B20/186H05B41/2824Y02B20/202H05B41/3928G09G2310/0237G09G3/342G09G2320/0261G09G2310/024Y02B20/00G02F1/133
Inventor 姜正一李尚勋朴永濬金洙君成基范
Owner SAMSUNG ELECTRONICS CO LTD
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