Backlight device, display device, and television receiver

Details Backlight device, display device, and television receiver Backlight device, display device, and television receiver

2007-07-23

2011-10-25

Kim, Richard (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

Reexamination Certificate

active

08045094

ABSTRACT:
A backlight device capable of preventing or reducing, even when an optical sheet bends, occurrence of luminance nonuniformity and/or shades due to the bend. The backlight device1controls the properties of light emitted by a light source12using two upper and lower diffusion sheets16, 20and a lens sheet18placed between the diffusion sheets and illuminates the back side of a display panel with the light, in which a space24for expansion is provided between the lens sheet18and the upper diffusion sheet20, the space for expansion accommodating a bend of the lens sheet18which is caused by expansion due to heat from the light source12.

REFERENCES:
patent: 7510314 (2009-03-01), Arai et al.
patent: 2005/0099604 (2005-05-01), Mizumaki et al.
patent: 2007/0132909 (2007-06-01), Oohira
patent: 11-52372 (1999-02-01), None
patent: 11-337942 (1999-12-01), None
patent: 2001-76527 (2001-03-01), None

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