Optical unit and LCD device using the optical unit
AssigneeNEC LCD Technologies, Ltd.
InventorToshihisa Ogawa
Life of this patent
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Abstract
An optical unit, includes a light conductive plate having a first surface and a second surface, at least one optical sheet on the first surface of the light conductive plate, and a light reflective sheet extending over the entire second surface of the light conductive plate and fastened on a portion of a first surface of the optical sheet adjacent the periphery thereof to fasten the light conductive plate, the optical sheet, and the light reflective sheet as an optical unit, and to define a light discharge region on the first surface of the optical sheet and the first surface of the light conductive plate.
Claims10
An optical unit, comprising:
- a light conductive plate having a first surface and a second surface;
- at least one optical sheet on the first surface of the light conductive plate;
- and
- a light reflective sheet extending over the entire second surface of the light conductive plate and fastened on a portion of a first surface of the optical sheet adjacent the periphery thereof to fasten the light conductive plate, the optical sheet, and the light reflective sheet as an optical unit, and to define a light discharge region on the first surface of the optical sheet and the first surface of the light conductive plate.
An optical unit for a liquid crystal display device, comprising:
- a light conductive plate;
- a source of light arranged to impinge light to an edge of the light conductive plate;
- and
- a single light reflective sheet retaining the light conductive plate, the source of light, and the light reflective sheet fastened in an appropriate positional relationship.
An optical unit, comprising:
- a frame surrounding an opening, the frame having a first surface and a second surface;
- a light conductive plate positioned in the opening of the frame, the light conductive plate having a first surface adjacent the first surface of the frame and a second surface adjacent the second surface of the frame;
- a diffusion sheet fastened to the first surface of the frame in a manner to cover at least a portion of the first surface of the frame and to cover the first surface of the light conductive plate;
- and
- a light reflective sheet fastened to the second surface of the frame in a manner to cover at least a portion of the second surface of the frame and to cover the second surface of the light conductive plate,
- wherein the diffusion sheet and the light reflective sheet cooperate to fasten the light conductive plate within the frame.
Dependencies are inferred from the claim text.