Liquid crystal display device
AssigneeNEC LCD Technologies, Ltd.
InventorKAZUSHI FUJIMOTO
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Abstract
A liquid crystal display device includes a liquid crystal display panel obtained by adhering upper and lower polarizing plates to upper and lower surfaces, respectively, of an electrode substrate. The upper polarizing plate has a first roughened surface on its outer surface. The first roughened surface is formed for the purpose of antiglare. The lower polarizing plate has a second roughened surface on its outer surface. The second roughened surface is formed to have a surface roughness equivalent to or less than that of the first roughened surface. As a result, a moiré fringe is decreased.
Claims11
A liquid crystal display device comprising a liquid crystal display panel obtained by adhering upper and lower polarizing plates to upper and lower surfaces, respectively, of an electrode substrate, said upper polarizing plate having a first roughened surface, which is formed for the purpose of antiglare, on an outer surface thereof, and said lower polarizing plate having a second roughened surface, which is formed so as to have a surface roughness not more than that of said first roughened surface, on an outer surface thereof, whereby a moiré fringe is decreased.
A liquid crystal display device comprising:
- a liquid crystal display panel having an electrode substrate unit and upper and lower polarizing plates, said electrode substrate unit being comprised of upper and lower electrode substrates arranged adjacent to each other, and said upper and lower polarizing plates being adhered to two outer surfaces, respectively, of said electrode substrate units so as to transmit only light having a polarization plane in a constant direction;
- a backlight unit having a fluorescent tube serving as a light source, a reflector, a light guide plate, a reflecting sheet and a diffusing sheet sequentially arranged above said light guide plate to be substantially parallel to said light guide plate, and a plurality of lens sheets inserted between said diffusing sheet and said electrode substrate unit to be substantially parallel to each other;
- and
- a driver IC for driving said liquid crystal display panel and a signal control circuit for said driver IC,
- wherein said upper polarizing plate has a first roughened surface, on an outer surface thereof, which is formed for antiglare, and said lower polarizing plate has a second roughened surface, on an outer surface thereof, which is formed so as to have a surface roughness not more than that of said first roughened surface,
- whereby a moiré fringe generated by a presence of said plurality of lens sheets is decreased.
Dependencies are inferred from the claim text.