Direct-lit liquid crystal displays with laminated diffuser...

Details Direct-lit liquid crystal displays with laminated diffuser... Direct-lit liquid crystal displays with laminated diffuser...

2004-10-15

2008-11-04

Dudek, James A (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

Reexamination Certificate

active

07446827

ABSTRACT:
In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.

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