Reflective display device and a light source for a display device
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United States of America Patent
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Nov 19, 2002
Grant Date -
N/A
app pub date -
Apr 30, 2001
filing date -
Aug 4, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reflective liquid crystal display device (LCD) (40) includes: a substrate (60), a reflecting layer (61), a liquid crystal layer (62), an electrode layer (63), a color filter layer (64), an upper substrate (65), and a polarizer (66). The reflective liquid crystal display device further includes a holographic field lens (67). By providing the holographic field lens, the LCD can be used with a closely placed, offset light source (41), since the holographic field lens simultaneously concentrates light incident on the LCD and redirects it in a preferred direction. The holographic field lens can be provided within the structure of the LCD.
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