Transparent conductive ceramic-coated substrate processes for preparing same and uses thereof

• US 5,013,607 A
• Filed: 06/08/1989
• Issued: 05/07/1991
• Est. Priority Date: 09/30/1987
• Status: Expired due to Term

• Current Assignee: Catalysts & Chemicals Industries Co. Ltd. (JGC Holdings Corporation)
• Original Assignee: Catalysts & Chemicals Industries Co. Ltd. (JGC Holdings Corporation)
• Inventors: Senjyuu, Noboru, Hirai, Toshiharu, Komatsu, Michio, Sato, Goro, Abe, Yoneji
• Primary Examiner(s): Cashion, Jr., Merrell C.
• Assistant Examiner(s): Sumihiro, Don
• Application Number:
  US07/391,604
• Time in Patent Office: 698 Days
• Field of Search: 427/123, 427/126.3, 428/447, 428/410, 428/428, 428/426, 428/429, 428/432, 428/450, 428/469, 428/689, 428/446, 428/470
• US Class Current: 428/426
• CPC Class Codes: C03C 17/25 by deposition from the liquid phase
• CPC Class Codes: C03C 2217/23 Mixtures
• CPC Class Codes: C03C 2218/11 from solutions or suspensions
• CPC Class Codes: C03C 2218/113 by sol-gel processes
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: Y10T 428/31612 As silicone, silane or siloxane
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

Disclosed are transparent conductive ceramiccoated substrates having a surface resistance of 10³ -10¹¹ Ω/□, a total light transmission of at least 85% and a haze of less than 10%, said coated substrates being prepared by coating on the substrate a water organic solvent mixture type coating liquid containing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance, processes for preparing said coated substrates, and display and copy machine using said coated substrates.

Claims

1. A transparent conductive ceramic-coated substrate having formed on the surface a transparent conductive ceramic coating by using a coating liquid for forming a transparent conductive ceramic coating, said coating liquid being prepared by homogeneously dissolving or dispersing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance in a mixed solvent comprising water and an organic solvent, and said substrate having a surface resistance of 10³ -10¹¹ Ω

□

, a total light transmission of at least 85% and a haze of less than 10%.

2. A transparent conductive ceramic-coated substrate having formed on the surface a transparent conductive ceramic coating by using a coating liquid for forming a transparent conductive ceramic coating, said coating liquid being prepared by homogeneously dissolving or dispersing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance in a mixed solvent comprising water and an organic solvent, and said substrate having a surface resistance of 10³ -10¹¹ Ω

□

, and a glossiness of 30-100%.

3. A display having been equipped, as a face-plate, a transparent conductive ceramic coated substrate having formed on the surface a transparent conductive ceramic coating by using a coating liquid for forming a transparent conductive coating, said coating liquid being prepared by homogeneously dissolving or dispersing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance in a mixed solvent comprising water and an organic solvent, and said substrate having a surface resistance of 10³ -10¹¹ Ω

□

, a total light transmission of at least 85% a haze of less than 10% and a resolving power of at least 50 bar/cm.

4. A display having been equipped, as a face-plate, a transparent conductive ceramic-coated substrate having formed on the surface a transparent conductive ceramic coating by using a coating liquid for forming a transparent conductive ceramic coating, said coating liquid being prepared by homogeneously dissolving or dispersing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance in a mixed solvent comprising water and an organic solvent, and said substrate having a surface resistance of 10³ -10¹¹ Ω

□

, a glossiness of 30-100% and a resolving power of at least 50 bar/cm.

5. A copy machine having been equipped, as a platen glass, a transparent conductive ceramic-coated substrate having formed on the surface by using a coating liquid for forming a transparent conductive ceramic coating, said coating liquid being prepared by homogeneously dissolving or dispensing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance, and said substrate having a surface resistance of 10³ -11¹¹ Ω

□

, a total light transmission of at least 85% and a haze of less than 10%.

6. A process for preparing a transparent conductive ceramic-coated substrate, which comprises coating on a substrate a coating liquid for forming a transparent conductive ceramic coating, followed by drying and/or heating, said coating liquid being prepared by homogeneously dissolving or dispersing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance in a mixed solvent comprising water and an organic solvent.

8. The process for preparing a transparent conductive ceramic-coated substrate as claimed in claim 6 or 7, wherein the substrate is irradiated with an electromagnetic wave having a wavelength shorter than that of visible light after and/or during at least one of the steps (1) of coating the coating liquid, (2) of drying the coating and (3) of heating the coating.

9. A process for preparing a transparent conductive ceramic-coated substrate, which comprises coating a coating liquid for forming a transparent protective coating on the substrate obtained by the process for preparing the substrate as claimed in claim 6 or 7, followed by drying and/or heating.

10. A process for preparing a transparent conductive ceramic-coated substrate, which comprises preheating to 40°

-90°

C. and keeping at that temperature the substrate obtained by the process for preparing the substance as claimed in claim 6 or 7, and coating a coating liquid for forming a transparent protective coating on said substrate, followed by drying and/or heating.

11. The process for preparing a transparent conductive ceramic-coated substrate as claimed in claim 9, wherein the substrate is irradiated with an electromagnetic wave having a wavelength shorter than that of visible light after and/or during at least one of the steps (1) of coating the coating liquid for forming a transparent protective coating, (2) of drying the protective coating and (3) of heating the protective coating.

12. A process for preparing a transparent conductive ceramic-coated substrate, which comprises coating a coating liquid for forming a transparent protective coating on the substrate obtained by the process for preparing the substance as claimed in claim 8, followed by drying and/or heating.

13. A process for preparing a transparent conductive ceramic-coated substrate, which comprises preheating to 40°

-90°

C. and keeping at that temperature the substrate obtained by the process for preparing the substrate as claimed in claim 8, and coating a coating liquid for forming a transparent protective coating on said substrate, followed by drying and/or heating.

14. The process for preparing a transparent conductive ceramic-coated substrate as claimed in claim 10, wherein the substrate is irradiated with an electromagnetic wave having a wavelength shorter than that of visible light after and/or during at least one of the steps (1) of coating the coating liquid for forming a transparent protective coating, (2) of drying the protective coating and (3) of heating the protective coating.

7. A process for preparing a transparent conductive ceramic-coated substrate, which comprises coating a coating liquid for forming a transparent conductive ceramic coating on a substrate preheated to 40°

-90°

C. and kept at that temperature, followed by drying and/or heating, said coating liquid being prepared by homogeneously dissolving or dispersing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance in a mixed solvent comprising water and an organic solvent.