Transparent conductive substrate

• US 5,411,792 A
• Filed: 02/23/1993
• Issued: 05/02/1995
• Est. Priority Date: 02/27/1992
• Status: Expired due to Term

• Current Assignee: Sumitomo Metal Mining Company Limited
• Original Assignee: Tohoku Chemical Industries, Ltd. (ALCONIX Corp.), Sumitomo Metal Mining Company Limited
• Inventors: Tsukui, Yasuo, Yukinobu, Masaya, Kawata, Munekazu
• Primary Examiner(s): Nakarani, D. S.
• Assistant Examiner(s): LE, HOA T
• Application Number:
  US08/021,338
• Time in Patent Office: 798 Days
• Field of Search: 428/328, 428/697, 428/702, 428/913, 428/212, 252/518
• US Class Current: 428/212
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: H01B 1/20 Conductive material dispersed in non-conductive organic material organic macromolecular compounds or compositions C08
• CPC Class Codes: H05K 1/092 Dispersed materials, e.g. conductive pastes or inks
• CPC Class Codes: H05K 3/20 by affixing prefabricated conductor pattern H05K1/187, H05K3/046, H05K3/4658, H05K3/4682 takes precedence
• CPC Class Codes: Y10S 156/922 Specified electronic component delaminating in preparation for recycling
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 156/11 Methods of delaminating, per se; i.e. , separating at bonding face
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/256 Heavy metal or aluminum or compound thereof

Abstract

A transparent conductive substrate comprising a base plate member allowing transmission therethrough of visible light, a transparent overcoat layer formed on the base plate member, and a transparent conductive film which is formed on the overcoat layer, containing ultra-fine particles of indium-tin oxide having a particle size of 0.1 μm or smaller, having light transmittance of 70% or higher and exhibiting surface resistance of 200 Ω/□ or lower. This transparent conductive substrate has low surface resistance and excellent optical characteristics.

Claims

1. A transparent electroconductive substrate comprising:

a visible light transmitting base plate member;

a visible light transparent overcoat layer formed on said base plate member, said layer including a material selected from the group consisting of an ultraviolet-setting resin and a thermosetting resin; and

a visible light transparent electroconductive film formed on said overcoat layer, including a material selected from the group consisting of an ultraviolet-setting resin and a thermosetting resin, and further including ultra-fine particles of indium-tin oxide dispersed therein, said ultra-fine particles having a particle size of 0.1 μ

m or smaller, said visible light transparent electroconductive film exhibiting specific resistance between 6×

10^-3 and 5×

10^-2 Ω

.cm.

3. A transparent electroconductive substrate according to claim 1, wherein said visible light transparent electroconductive film comprises a first layer and a second layer, wherein said second layer is more densely filled with said ultra-fine particles than said first layer, said second layer being located between the first layer and the overcoat layer.

2. A transparent electroconductive substrate comprising:

a visible light transmitting base plate member;

a visible light transparent overcoat layer formed on said base plate member, said overcoat layer including a material selected from the group consisting of an ultraviolet-setting resin and a thermosetting resin; and

a visible light transparent electroconductive film formed on said overcoat layer, including a material selected from the group consisting of one of an ultraviolet-setting resin and a thermosetting resin, and further including ultra-fine particles of indium-tin oxide dispersed therein, said ultra-fine particles having a particle size of 0.1 μ

m or smaller, said visible light transparent electroconductive film having visible light transmittance of 70% or higher and exhibiting surface resistance of 200 Ω

/□

or lower.

4. A transparent electroconductive substrate according to claim 2, wherein said visible light transparent electroconductive film comprises a first layer and a second layer, wherein said second layer is more densely filled with said ultra-fine particles than said first layer, said second layer being located between the first layer and the overcoat layer.