Liquid crystal display having silylated light polarizers

• US 4,759,611 A
• Filed: 12/19/1986
• Issued: 07/26/1988
• Est. Priority Date: 12/19/1986
• Status: Expired due to Term

• Current Assignee: Senshin Capital LLC (Intellectual Ventures LLC)
• Original Assignee: Polaroid Corporation Patent Department
• Inventors: Downey, John F. Jr.
• Primary Examiner(s): Miller, Stanley D.
• Assistant Examiner(s): MAI, HUY KIM
• Application Number:
  US06/944,429
• Time in Patent Office: 585 Days
• Field of Search: 350/337, 350/341, 350/340, 350/396, 428/452, 427/132, 526/279, 252/299.4, 252/299.5
• US Class Current: 349/97
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid
• CPC Class Codes: G02F 1/133528 Polarisers

Abstract

A liquid crystal display is disclosed having silylated polyvinyl alcohol polarizing layers.

Claims

1. A liquid crystal display structure comprising:

first and second laminate assemblies spaced from one another in a substantially parallel relationship, said first and second laminate assemblies having a layer of liquid crystal material confined therebetween by a seal means;

each of said laminate assemblies including, in order from said liquid crystal material layer, an alignment layer;

a conductive electrode structure;

a silylated polyvinyl alcohol light-polarizing layer stabilized by organosilylation treatment against humidity and heat; and

a polymeric support for said layers.

2. The liquid crystal display structure claimed in claim 1, wherein each of said polymeric supports comprises a biaxially oriented and birefringent polymeric material.

3. The liquid crystal display structure claimed in claim 2, wherein each of said biaxially oriented birefringement polymeric supports comprises polyethylene terephthalate.

4. The liquid crystal display structure claimed in claim 1, wherein each of said silylated polarizing layers in a linear dichroic polarizing layer comprising an iodine-stained and borated stretched layer of polyvinyl alcohol.

5. The liquid crystal display structure claimed in claim 1, wherein each of said silylated polarizing layers is a linear dichroic polarizing layer comprising a stretched polyvinyl alcohol sheet containing polyvinylene light-polarizing molecules.

6. The liquid crystal display structure claimed in claim 1, wherein each of said silylated polyvinyl alcohol light-polarizing layers is obtained by organosilylation of a polyvinyl alcohol light-polarizing layer.

7. The liquid crystal display structure claimed in claim 6, wherein said organosilylation comprises treating said light-polarizing layer with a hydrolyzed organosilane and heating said layer to bond said hydrolyzed organosilane to the surface thereof.

8. The liquid crystal display structure claimed in claim 7, wherein said organosilane comprises N-2-aminoethyl-3-aminopropyl-trimethoxysilane.

9. The liquid crystal display structure claimed in claim 7, wherein said organosilane comprises 3-N-methylaminopropyl-trimethoxysilane.

10. The liquid crytal display structure claimed in claim 1, wherein said electrode structure comprises a layer of silver sandwiched between a pair of dielectric layers.

11. The liquid crystal display structure claimed in claim 10, wherein said electrode structure comprises a layer of silver sandwiched between a pair of titanium dioxide layers.

12. The liquid crystal display structure claimed in claim 1, wherein said electrode structure is positioned directly on the surface of said silylated polyvinyl alcohol light-polarizing layer.

13. The liquid crystal display structure claimed in claim 3, wherein a light reflective layer is positioned in one of said laminate assemblies between said polymeric support and said light-polarizing layer.