Polarized light source using an organic liquid crystal

• US 7,498,739 B1
• Filed: 09/30/2004
• Issued: 03/03/2009
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Rockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Rockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Seder, Thomas A., Steffensmeier, Martin J.
• Primary Examiner(s): Ton; Toan
• Assistant Examiner(s): FEATHERLY, HANA SANEI
• Application Number:
  US10/954,531
• Time in Patent Office: 1,615 Days
• Field of Search: 313/112, 313/504, 313/506, 313/512, 349/69
• US Class Current: 313/504
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/13362 providing polarized light, e.g. by converting a polarisation component into another one
• CPC Class Codes: H10K 50/85 Arrangements for extracting light from the devices
• CPC Class Codes: H10K 59/8793 Arrangements for polarized light emission H10K59/8791 takes precedence

Abstract

An organic polarized light source is provided that includes a substrate, a striated layer, and an anode formed on the substrate. The organic polarized light source further includes an organic hole transport layer formed on the anode, an organic electron transport layer formed on the hole transport layer, and a cathode formed on the electron transport layer.

Claims

1. A LCD, comprising:

an organic polarized light source, said organic polarized light source comprising a substrate, a striated layer, an anode formed on said substrate, an organic hole transport layer formed on said anode, an organic electron transport layer formed on said hole transport layer, and a cathode formed on said electron transport layer, wherein the organic hole transport layer is formed of aromatic amides, the organic hole transport layer and the organic electron transport layer have substantially aligned and substantially coaxial molecules, and the organic polarized light source is one selected from encapsulated and edge sealed;

a conductive mesh formed on said anode, said conductive mesh being formed of a predetermined pattern of crossing traces;

a liquid crystal element coupled with said organic polarized light source; and

a single polarizer coupled with said liquid crystal element,

wherein light emitted from said organic polarized light source passes through said liquid crystal element and then through said single polarizer, wherein said organic polarized light source operates as a backlight for said liquid crystal element, wherein said organic hole transport layer and said organic electron transport layer comprise small molecule organic compounds, and wherein approximately at least ten percent of said light emitted from said organic hole transport layer and from said organic electron transport layer passes through said LCD.

2. The LCD of claim 1, wherein said striated layer is located between said substrate and said anode.

3. The LCD of claim 1, wherein said striated layer is located between said anode and said hole transport layer.

4. The LCD of claim 1, wherein said conductive mesh is more conductive than said anode.