Display device with optical member having two parts in overlay relation to reflect light incident at particular angle
First Claim
Patent Images
1. A display device comprising:
- a transparent-scattering type display element in which light scattering characteristics are changed in response to an external input;
an optical member disposed at a back side of the transparent-scattering type display element, which substantially transmits light which passes through the transparent-scattering type display element within a predetermined range of an incident angle, and substantially reflects other light; and
a light absorber disposed at the back side of the optical member;
wherein the optical member comprises two parts in an overlay relation.
2 Assignments
0 Petitions
Accused Products
Abstract
The display device using a transparent-scattering type liquid crystal element has such a structure that the light quantity to an observer is controlled as possible when a black image is provided, and a high efficiency of light is maintained in comparison with the conventional technique when a white image is provided. A prism array 2 is disposed at the back surface of the transparent-scattering type display element so that a sawteeth-like surface of the prism array 2 faces the display element 1, and a light absorber 3 is disposed at the back surface of the prism array.
23 Citations
3 Claims
-
1. A display device comprising:
-
a transparent-scattering type display element in which light scattering characteristics are changed in response to an external input; an optical member disposed at a back side of the transparent-scattering type display element, which substantially transmits light which passes through the transparent-scattering type display element within a predetermined range of an incident angle, and substantially reflects other light; and a light absorber disposed at the back side of the optical member; wherein the optical member comprises two parts in an overlay relation. - View Dependent Claims (2, 3)
-
Specification