Liquid crystal display device having direct backlight with...

Details Liquid crystal display device having direct backlight with... Liquid crystal display device having direct backlight with...

2008-02-08

2010-11-02

Caley, Michael H (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C349S058000, C349S061000, C362S097100, C362S097200, C362S224000, C362S225000

Reexamination Certificate

active

07826008

ABSTRACT:
The present inventions enhances the brightness at a center portion of a display screen in a liquid crystal display device used in a TV set having a direct backlight. Odd-number pieces of fluorescent lamps are used in the inside of the backlight. Using external electrode fluorescent lamps as the fluorescent lamps, electrodes of the respective fluorescent lamps can be connected in common. Further, one fluorescent lamp can be arranged at the center of the display screen. Due to such a constitution, the liquid crystal display device can effectively ensure the brightness at the center of the display screen.

REFERENCES:
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patent: 2005/0243551 (2005-11-01), Onishi et al.
patent: 2006/0002107 (2006-01-01), Jeong
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patent: 2007/0013825 (2007-01-01), Kim et al.
patent: 2007/0076142 (2007-04-01), Ohshima et al.
patent: 2007/0127226 (2007-06-01), Chen et al.
patent: 2001-210126 (2001-08-01), None
patent: 2004-318176 (2004-11-01), None
patent: 2006-114445 (2006-04-01), None

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