Light source for backlighting
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United States of America Patent
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-
Dec 28, 1999
Grant Date -
N/A
app pub date -
Mar 19, 1997
filing date -
Mar 19, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A light source for a display panel of the type used in notebook computers. The light source consists of a housing having diffusively reflecting bottom and side interior surfaces that form a cavity. The housing defines an aperture that is juxtaposed with a rear surface of the display panel. A first series of LEDs is mounted within the cavity around the perimeter of the aperture and is shielded from the aperture by perimeter baffles that extend around the periphery of the aperture. A second series of LEDs is mounted within the cavity on the bottom wall of the housing. A series of baffles is interposed between the second series of LEDs and the aperture. A series of light quality enhancing films is interposed between the cavity and the display panel. The light source produces light of a uniform character with relatively high intensity and whiteness.
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