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US 7,443,464 B2Granted
Liquid crystal display unit
AssigneeCitizen Holdings Co., Ltd.
InventorKanetaka Sekiguchi
Life of this patent
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Abstract
A partial polarization member is provided on a second substrate. The partial polarization member is provided corresponding to an aperture of a reflection film, and is not provided in other areas that overlap with reflectors of a reflection film. Therefore, light that is incident from a backlight is reflected by the reflection film and returns to the backlight, without generating loss due to absorption or the like. The light that returns to the backlight is reflected by a backlight reflection film of the backlight, and is output to the aperture of the reflection film.
Claims22
A liquid crystal display unit comprising:
- a first substrate;
- a second substrate;
- a liquid crystal layer that is sandwiched between the first substrate and the second substrate;
- a first electrode that is provided on the first substrate;
- a second electrode that is provided, corresponding to a pixel on a display, on the second substrate;
- a reflection film that is provided on the second substrate and includes a plurality of reflectors that is provided, corresponding to the pixel, with a space therebetween;
- an auxiliary light source that is provided on an opposite side of the second substrate with respect to the first substrate;
- and
- a partial polarization member that is provided, corresponding to the space, between the reflection film and the auxiliary light source, wherein
- the partial polarization member completely overlaps the space, while only partially overlapping each of the reflectors.
7 more elements
Dependencies are inferred from the claim text.