EL lamp for a front lit display
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Jun 27, 2002
app pub date -
Dec 21, 2000
filing date -
Dec 21, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A light guide directs some light from an EL lamp into a display and absorbs or redirects the remaining light in a direction different from the preferred viewing angle for the display, thereby preserving the contrast of the display. The display includes a substantially transparent light guide having a first major surface and a second, opposed major surface and at least two opposed edges. An EL lamp is optically coupled to the light guide along a first of the opposed edges and the light guide includes grooves in one of the major surfaces for re-directing light from the EL lamp out of the one of the major surfaces.
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