Liquid crystal display device

• US 5,387,445 A
• Filed: 03/09/1992
• Issued: 02/07/1995
• Est. Priority Date: 03/08/1991
• Status: Expired due to Term

• Current Assignee: Henkel Corporation (Henkel AG & Co KGaA)
• Original Assignee: Zeneca Incorporated (Astrazeneca PLC)
• Inventors: Doba, Takahisa, Horiuchi, Shin, Wakabayashi, Sumio
• Primary Examiner(s): Thomas, Alexander S.
• Application Number:
  US07/847,170
• Time in Patent Office: 1,065 Days
• Field of Search: 428/1, 359/80, 522/180
• US Class Current: 428/1.54
• CPC Class Codes: C09K 2323/057 Ester polymer, e.g. polycarbonate, polyacrylate or polyester
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 2202/023 curable
• CPC Class Codes: G03F 7/0275 with dithiol or polysulfide compounds

Abstract

A liquid crystal display device including two electrically insulating substrates, electrodes on the inner surfaces of the substrates, a film of liquid crystal material contained between the electrodes and a resinous material as sealant and/or encapsulant and/or inner structural component characterised in that the resinous material is the product of light-curing a light-curable resin composition comprising at least one compound having two or more non-aromatic carbon-carbon unsaturated bonds per molecule, at least one compound having two or more mercapto groups per molecule and a photoinitiator.

Claims

1. A liquid crystal display device including two electrically insulating substrates, electrodes on the inner surfaces of the substrates, a film of liquid crystal material contained between the electrodes and a resinous material as sealant, encapsulant or inner structural component characterised in that the resinous material is the product of light-curing a light-curable resin composition comprising at least one compound having two or more non-aromatic carbon-carbon unsaturated bonds per molecule, at least one compound having two or more mercapto groups per molecule and a photoinitiator.

2. A device according to claim 1 wherein the photoinitiator is a visible light sensitive photoinitiator.

3. A device according to claim 1 or claim 2 wherein the viscosity of the light-curable resin composition is between 20 and 500 poises at 25°

C.

4. A device according to claim 1 wherein the compound having two or more non-aromatic carbon-carbon unsaturated bonds per molecule comprises triallyl isocyanurate or triallyl cyanurate.