Patent ID: 7019801
Filing Date: 2006-03-28
Classification: G02F

Abstract:
1. A reflective display device comprising: a display layer; an optical element placed on an observer side of said display layer; and a reflection element placed on a side of said display layer opposite to said observer side, wherein said optical element has a principal plane including a plurality of tilt faces tilted with respect to a display plane, a light ray incident on said display layer through said optical element and reflected by said reflection element is allowed to outgo in a direction normal to said display plane; wherein said optical element has a plurality of other faces having an angle of about 90 degrees with respect to said display plane, and said plurality of tilt faces and said plurality of other faces are formed alternately, so that a light ray incident from a side of the plurality of other faces is allowed to outgo in the direction normal to the display plane.