Projection type display device
AssigneeSeiko Epson Corporation
InventorsMotoyuki Fujimori, Kazuto Shinohara, Masashi Kitabayashi, Kazuyuki Iinuma
Life of this patent
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Abstract
A liquid crystal panel unit is attached to a light incident surface of a prism composite. The liquid crystal panel unit includes a panel frame plate holding a liquid crystal panel, and a fixation frame plate glued and fixed to the light incident surface. The panel frame plate is fastened to the fixation frame plate by screws through an intermediate frame plate. By using wedges, the position of the panel frame plate with respect to the light incident surface is adjusted. This allows the liquid crystal panel to be reliably positioned and fixed so that the deviation amount in pixel matching is minimized and the focus adjustment can be accomplished correctly.
Claims18
A projection type display device of the type which separates a beam from a light source into beams of a plurality of colors, modulates each color beam through a light valve in accordance with image information, synthesizes the modulated color beams by light synthesizing, and projects the synthesized beam onto a projection surface through a projecting mechanism in an enlarged state, the projection type display device comprising:
- a fixation frame plate fixed to a light incident surface of a light synthesizing means;
- a light valve frame plate for holding a light valve;
- fixing mechanism for detachably fixing the light valve frame plate to the fixation frame plate;
- and
- positioning mechanism positioned proximate to the fixation frame plate for positioning the light valve.
A projection type display device of the type which separates a beam from a light source into beams of a plurality of colors, modulates each color beam through a light valve in accordance with image information, synthesizes the modulated color beams by light synthesizing, and projects the synthesized beam onto a projection surface through a projection mechanism in an enlarged state, the projection type display device comprising:
- a fixation frame plate fixed to a light incident surface of a light synthesizing means;
- a light valve frame plate for holding a light valve;
- an intermediate frame plate placed between the fixation frame plate and the light valve frame plate;
- a fixing mechanism for detachably fixing the light valve frame plate and the intermediate frame plate to the fixation frame plate;
- and
- a positioning mechanism positioned proximate to the fixation frame plate for positioning the light valve.
Dependencies are inferred from the claim text.