Glass substrate and method of manufacturing the same

• US 7,320,827 B2
• Filed: 09/24/2004
• Issued: 01/22/2008
• Est. Priority Date: 03/26/2002
• Status: Active Grant

• Current Assignee: Nippon Sheet Glass Company Limited (Nippon Telegraph and Telephone Corporation)
• Original Assignee: Nippon Sheet Glass Company Limited (Nippon Telegraph and Telephone Corporation)
• Inventors: Yamamoto, Toru, Ichiki, Kiyotaka, Kiyohara, Koichiro, Fujisawa, Akira
• Primary Examiner(s): Blackwell; G.
• Application Number:
  US10/951,038
• Publication Number:
  US 20050089693A1
• Time in Patent Office: 1,215 Days
• Field of Search: 428/426, 428/428, 428/432, 428/698, 428/699, 428/701, 428/702
• US Class Current: 428/428
• CPC Class Codes: C03C 17/007 containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
• CPC Class Codes: C03C 17/3411 with at least two coatings of inorganic materials C03C17/36, C03C17/42 take precedence
• CPC Class Codes: C03C 17/3417 all coatings being oxide coatings
• CPC Class Codes: C03C 2217/42 consisting of particles only
• CPC Class Codes: C03C 2217/77 Coatings having a rough surface
• CPC Class Codes: C03C 2218/152 by cvd
• CPC Class Codes: C23C 16/401 containing silicon
• CPC Class Codes: C23C 16/407 of zinc, germanium, cadmium, indium, tin, thallium or bismuth

Abstract

The present invention provides a glass substrate including a glass sheet, a thin film containing silica as its main component, and a group of metal oxide particles separated from one another, the metal oxide particles and the thin film being stacked on the glass sheet in that order from the glass sheet side, wherein the average height of the metal oxide particles is 10 to 100 nm. The present invention also provides a method of manufacturing the glass substrate, the method including forming a group of metal oxide particles by a thermal decomposition method including an inorganic metal chloride as a raw material.

Claims

1. A glass substrate comprising:

a glass sheet;

a group of metal oxide particles separated from one another; and

a thin film containing silica as its main component,

wherein the group of metal oxide particles and the thin film are stacked on the glass sheet in that order from the glass sheet side,

the metal oxide particles having an average height of 10 to 100 nm, and

the metal oxide particles have an outer dome-like shape and a bottom side that contacts the glass sheet.

2. The glass substrate as set forth in claim 1, wherein an occupied area percentage of the metal oxide particles and an occupied area percentage of the thin film containing silica as its main component are 50 to 90% and 10 to 50%, respectively, on a surface of the glass sheet.

3. The glass substrate as set forth in claim 1, wherein the metal oxide particles exist at a rate of 50 to 150 particles/μ

m² in a surface of the glass sheet.

4. The glass substrate as set forth in claim 1, wherein the refractive index of the metal oxide particles is higher than the refractive index of the glass sheet and than the refractive index of the thin film containing silica as its main component.

5. The glass substrate as set forth in claim 1, further comprising a transparent conductive film on the thin film containing silica as its main component.

6. The glass substrate as set forth in claim 1, wherein the shape of the metal oxide particle is a substantially semi-spherical shape.