Display device
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United States of America Patent
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Issued Date -
Sep 8, 2005
app pub date -
Mar 2, 2005
filing date -
Mar 2, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A display device includes an optical compensation sheet stacked body mounted on a back surface of a liquid crystal display panel, and a light guide plate mounted on a back surface of the optical compensation sheet stacked body. A first air layer is interposed between the optical compensation sheet stacked body and the light emitting surface of the light guide plate, and a plurality of diffusion plates are mounted on the light incident surface of the light guide plate. A reflection sheet is arranged to face the light guide plate, and an array of an LED chips is provided on a front surface of the reflection sheet. A second air layer is interposed between the light diffusion plates and the LED array. Light from the LED chips having a plurality of colors is mixed and effective optical path length can be prolonged, whereby the least coupling loss is obtained.
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