Liquid crystal display component and transparent conductive substrate suitable for the same

• US 6,734,946 B2
• Filed: 02/06/2002
• Issued: 05/11/2004
• Est. Priority Date: 11/30/1998
• Status: Expired due to Fees

• Current Assignee: Teijin Limited
• Original Assignee: Teijin Limited
• Inventors: Yatabe, Toshiaki, Hanada, Toru, Shiroishi, Isao, Mikoshiba, Hitoshi
• Primary Examiner(s): CHOWDHURY, TARIFUR RASHID
• Application Number:
  US10/066,594
• Publication Number:
  US 20020140890A1
• Time in Patent Office: 825 Days
• Field of Search: 428/64.1, 428/64.4, 428/64.5, 428/412, 428/457, 428/913, 428/1.1, 428/1.6, 349/158, 430/270.11
• US Class Current: 349/158
• CPC Class Codes: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: C09K 2323/06 Substrate layer characterised by chemical composition
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

The present invention relates to a liquid crystal display component and a transparent conductive substrate suitable as an electrode substrate for the liquid crystal display component. The transparent conductive substrate has the following feature: (i) it comprises a transparent polymer substrate (S), a gas barrier layer (X), a hardened resin layer (U) and a transparent conductive layer (E), (ii) the hardened resin layer (U) and the transparent conductive layer (E) are in contact with each other, and (iii) the surface in contact with the transparent conductive layer (E) of the hardened resin layer (U) has a surface electric resistivity of 1.0×10¹³ Ω/□ or more in an environment of 50° C. and 30% RH and that of 1.0×10¹² Ω/□ or more in an environment of 50° C. and 90% RH, and the transparent conductive substrate has a high gas barrier property and high stability in a high-temperature and high-humidity environment.

Claims

1. A transparent polymer substrate, formed by a solvent casting method, having a water absorption coefficient of 0.7% or less for transparent conductive substrate and having a total light transmittance of 80% or more, which comprises a polycarbonate resin having bisphenol A and 9,9-bis(4-hydroxy-3-methylphenyl)fluorene as bisphenol components.

2. A transparent polymer substrate according to claim 1, wherein the bisphenol A is present in an amount of 10 to 90 mol %.

3. A transparent polymer substrate according to claim 1, wherein the transparent polymer substrate has a thickness in the range of 0.02 to 0.7 mm.