Light sensitive display

• US 20080049154A1
• Filed: 10/26/2007
• Published: 02/28/2008
• Est. Priority Date: 05/23/2002
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Abileah, Adiel, Green, Pat, den Boer, Willem
• Granted Patent: US 7,852,417 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13312 Circuits comprising photodetectors for purposes other than feedback
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G06F 2203/04109 FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A light sensitive display.

Claims

1. A light sensitive display comprising:

(a) a light valve including a front polarizing element, a rear polarizing element, and light rotating material located between said first polarizing element and said rear polarizing element;

(b) a plurality of light sensitive elements located between said front polarizing element and said light rotating material;

(c) readout system distinguished between ambient light and another light level sensed by at least one of said light sensitive elements.