Projection type liquid crystal display unit
AssigneesNEC Corporation, NEC LCD Technologies, Ltd.
InventorFumihiko Fujishiro
Life of this patent
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Abstract
A projection type liquid crystal display unit includes (a) a first frame (13) having a first surface (15) formed with a first opening (13a), (b) a second frame (12) having a second surface formed with a second opening (12a), and (c) a liquid crystal display panel (11) sandwiched between the first and second frames (13, 12) such that an incident light passes through the second opening (12a), the liquid crystal display panel (11) and the first opening (13a) in this order. The first and second frames (13, 12) are both composed of resin, and the first surface (15) of the first frame (13) is roughened.
Claims5
A projection type liquid crystal display unit comprising:
- (a) a light source;
- (b) a converging lens which converges lights emitted from said light source;
- (c) a first polarizing plate which converts a light having passed said converging lens, into a linearly polarized light;
- (d) a liquid crystal light bulb which optically modulates said linearly polarized light in accordance with an image signal;
- (e) a second polarizing plate which extracts a light having an intensity varied in accordance with said image signal, out of said linearly polarized light leaving said liquid crystal light bulb;
- (f) a projection lens;
- and
- (g) a screen onto which said light leaving said second polarizing plate is projected through said projection lens,
- said liquid crystal light bulb including:
- (d1) a liquid crystal display panel;
- and
- (d2) a frame which supports said liquid crystal display panel therewith, said frame being composed of resin and having a first surface formed with an opening,
- an incident light passing through said liquid crystal display panel and then said opening,
- said first surface being roughened.
Dependencies are inferred from the claim text.