Direct-LIT liquid crystal displays with laminated diffuser plates
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United States of America Patent
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-
Feb 28, 2012
Grant Date -
May 14, 2009
app pub date -
Oct 31, 2008
filing date -
Oct 15, 2004
priority date (Note) -
In Force
status (Latency Note)
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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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