Illumination system for reflective displays
Assignee3M Innovative Properties Company
InventorsGary T. Boyd, Richard A. Miller, Leland R. Whitney
Life of this patent
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Abstract
An illumination system for a reflective display is particularly useful for microdisplays that use reflective displays. The light source and the reflective image display unit are mounted in a coplanar manner, thus permitting the light source and the display unit to be mounted on a single board, or even on a single substrate. The display unit may include a first light source directing light generally along a first axis and a reflective image display unit disposed with an optical axis substantially parallel to the first axis. A reflective polarizing film is disposed to direct light from the first light source to the reflective image light display unit.
Claims32
An illuminated display device, comprising:
- a first light source mounted to a first position on a substantially planar mount surface of a mount and directing light generally along a first axis;
- a reflective image display unit mounted to a second position on the mount surface different from the first position, with an optical axis substantially parallel to the first axis;
- and
- a reflective polarizing film disposed to direct light from the first light source to the reflective image display unit.
Dependencies are inferred from the claim text.