Transparent electroconductive laminate

• US 5,225,273 A
• Filed: 12/28/1990
• Issued: 07/06/1993
• Est. Priority Date: 12/28/1989
• Status: Expired due to Term

• Current Assignee: Teijin Limited
• Original Assignee: Teijin Limited
• Inventors: Suzuki, Nobuo, Arai, Shinji, Teranishi, Kunihiko, Mikoshiba, Hitoshi
• Primary Examiner(s): Robinson, Ellis P.
• Assistant Examiner(s): Speer, Timothy M.
• Application Number:
  US07/635,448
• Time in Patent Office: 921 Days
• Field of Search: 428/212, 428/428, 428/446, 428/323, 428/325, 428/327, 428/328, 428/697, 428/701, 428/216, 428/329, 428/411.1, 428/917, 428/480, 428/412
• US Class Current: 428/323
• CPC Class Codes: C23C 14/024 Deposition of sublayers, e.g. to promote adhesion of the coating C23C14/027 takes precedence
• CPC Class Codes: C23C 14/086 of zinc, germanium, cadmium, indium, tin, thallium or bismuth
• CPC Class Codes: G03G 5/104 comprising inorganic material other than metals, e.g. salts, oxides, carbon
• CPC Class Codes: G03G 5/142 Inert intermediate layers
• CPC Class Codes: G11B 2007/25414 containing Group 13 elements (B, Al, Ga)
• CPC Class Codes: G11B 2007/25417 containing Group 14 elements (C, Si, Ge, Sn)
• CPC Class Codes: G11B 7/252 of layers other than recording layers
• CPC Class Codes: G11B 7/254 of protective topcoat layers
• CPC Class Codes: G11B 7/2548 consisting essentially of inorganic materials
• CPC Class Codes: G11B 7/257 of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
• CPC Class Codes: H01B 1/12 organic substances organic macromolecular compounds or compositions C08
• CPC Class Codes: H05B 33/28 of translucent electrodes
• CPC Class Codes: Y10S 428/917 Electroluminescent
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/24975 No layer or component greater than 5 mils thick
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/252 Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
• CPC Class Codes: Y10T 428/254 Polymeric or resinous material
• CPC Class Codes: Y10T 428/256 Heavy metal or aluminum or compound thereof
• CPC Class Codes: Y10T 428/257 Iron oxide or aluminum oxide
• CPC Class Codes: Y10T 428/31504 : Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31507 : Of polycarbonate
• CPC Class Codes: Y10T 428/31786 : Of polyester [e.g., alkyd, etc.]

Abstract

A transparent electroconductive laminate having a transparent electroconductive layer composed mainly of indium oxide deposited on a transparent planar substrate, the electroconductive layer comprises two uniformly mixed phases comprising a crystalline phase of 1-80% by area and an amorphous phase of 99-20% by area and, in particular, the crystalline phase is composed of a grain or grains having a size of less than 1 μm and the crystal grain or grains are in at least one of an isolated state, a linked state and a state in which the crystal grain or grains are separated from each other by a network of the amorphous phase, whereby the laminate is suitable for an electrode of a transparent touch panel and an electroluminescent panel.

Claims

1. A transparent electroconductive laminate having a transparent electroconductive layer composed mainly of indium oxide deposited on a transparent planar substrate, said electroconductive layer comprises two uniformly mixed phases comprising a crystalline phase of 1-80% by area and an amorphous phase of 99-20% by area.

2. A transparent electroconductive laminate according to claim 1, wherein the crystalline phase comprises a crystal grain or grains having a size of less than 1 μ

m, and said crystal grain or grains are in at least one of an isolated state, a linked state and a state in which said crystal grain or grains are separated from each other by a network of the amorphous phase.

3. A transparent electroconductive laminate according to claim 2, in which the transparent electroconductive layer has a thickness of 50˜

500 Å

.

4. A transparent electroconductive laminate according to claim 3, in which the transparent electroconductive layer is composed of an indium oxide containing an additive metal tin (Sn) in an atomic ratio to indium atom (Sn/In) of 2/98˜

20/80.

5. A transparent electroconductive laminate according to claim 1, in which a layer of an amino group-containing alkylsiloxane polymer with an average thickness of 100˜

1,000 Å

is further arranged over the transparent electroconductive layer.

6. A transparent electroconductive laminate according to claim 5, in which the amino group-containing alkylsiloxane polymer has a repeating unit expressed by the formula ##STR7## or the formula ##STR8## wherein R₁ represents hydrogen atom, phenyl group, alkyl group having 1˜

4 carbon atoms or group expressed by the formula ##STR9## R₂ represents hydrogen atom or alkyl group having 1˜

4 carbon atoms;

R₃ represents alkyl group having 1˜

4 carbon atoms;

R₅ and R₆ respectively represent hydrogen atom or alkyl group having 1˜

4 carbon atoms;

x is an integer of 1˜

12; and

y is a integer of 1˜

12.

7. A transparent electroconductive laminate according to claim 6, in which the layer of an amino group-containing alkylsiloxane polymer contains metal or metal compound particles with a primary diameter of 100˜

1,000 Å

dispersed therein.

8. A transparent electroconductive laminate according to claim 5, in which a layer of a cyanoethylated resin with a thickness of 100˜

1,000 Å

is further formed on the layer of the amino group-containing alkylsiloxane polymer.

12. A transparent electroconductive laminate according to any one of claims 1, 9, 5 or 7, in which a layer of a metal selected from Pt, Pd, Ru, Os, Ir or Rh or an oxide thereof with a thickness of 0.5˜

20 Å

is disposed on the transparent electroconductive layer directly or on the layer of the amino group-containing alkylsiloxane polymer.

9. A transparent electroconductive laminate having a transparent electroconductive layer composed mainly of indium oxide disposed on a transparent planar substrate, said electroconductive layer has an absorption coefficient of 1.0×

10^-5 ˜

3.9×

10^-5 [Å

^-1 ] at 550 nm and a specific resistance of 4.0×

10^-4 ˜

1.4×

10^-3 [Ω

·

cm] and can be converted to a layer composed of uniformly mixed two phases of a crystalline phase of 1˜

80% by area and an amorphous phase of 99˜

20% by area with heat-treatment at 100°

˜

250°

C.

10. A transparent electroconductive laminate according to claim 9, in which the transparent electroconductive layer has a thickness of 50˜

500 Å

.

11. A transparent electroconductive laminate according to claim 10, in which the transparent electroconductive layer is composed of an indium oxide containing an additive metal tin (Sn) in an atomic ratio to indium atom (Sn/In) of 2/98˜

20/80.