IP Library Granted Patent US 7,280,102
Granted Patent B2
US 7,280,102 · App. 10/371,413 · Granted Oct 9, 2007

Light sensitive display

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Quick Facts
Patent No.
US 7,280,102
App. No.
10/371,413
Granted
Oct 9, 2007
Kind
B2
Abstract

A light sensitive display.

Claims (7)

1. A liquid crystal device comprising:

(a) a front electrode layer;

(b) a rear electrode layer;

(c) a liquid crystal material located between said front electrode layer and said rear electrode layer;

(d) changing an electrical potential between said rear electrode layer and said front electrode layer to selectively modify portions of said liquid crystal material to change the polarization of the light incident thereon;

(e) a plurality of light sensitive elements located together with said rear electrode layer; and

(f) a pen that provides an optical signal of a visible color to said light sensitive elements where the intensity of said optical signal provided to said light sensitive elements of the same color is modified based upon pressure exerted by said pen against said liquid crystal device, wherein said device provides a non-binary output of the level of said optical signal detected by said light sensitive elements.