Reflective display device

Details Reflective display device Reflective display device

2007-05-15

2007-05-15

Phan, James (Department: 2872)

Optical: systems and elements

Signal reflector

3-corner retroreflective

C349S113000

Reexamination Certificate

active

11340619

ABSTRACT:
A reflective display device includes a retroreflective layer including a plurality of unit structures that are arranged two-dimensionally on a virtual plane and a modulating layer, which is arranged closer to a viewer than the retroreflective layer is and which is switchable between a first state and a second state that have mutually different optical properties. The reflective display device conducts a display operation by using light that has been reflected back from the retroreflective layer. Each unit structure of the retroreflective layer has a recess defined by three planes that are opposed substantially perpendicularly to each other. An azimuthal direction, which is defined by projecting a normal to one of the three planes onto the virtual plane, and another azimuthal direction, which is defined by projecting an on-screen upward direction onto the virtual plane, form an angle of at most 30 degrees.

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U.S. Appl. No. 11/340,544, filed Jan. 27, 2006, entitled “Reflective Display Device”.

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