Laminated glass sheet for windshield

• US 20030150848A1
• Filed: 01/24/2003
• Published: 08/14/2003
• Est. Priority Date: 01/25/2002
• Status: Active Grant

• Current Assignee: Nippon Sheet Glass Company Limited
• Original Assignee: Nippon Sheet Glass Company Limited
• Inventors: Furusawa, Satoshi, Noguchi, Tatsuya
• Granted Patent: US 6,765,177 B2
• Time in Patent Office: Days
• US Class Current: 219/203
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: B32B 17/10348 comprising an obscuration band
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10807 Making laminated safety glass or glazing; Apparatus therefor
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3673 specially adapted for use in heating devices for rear window of vehicles
• CPC Class Codes: C03C 2217/948 Layers comprising indium tin oxide [ITO]
• CPC Class Codes: H05B 2203/013 Heaters using resistive films or coatings
• CPC Class Codes: H05B 2203/016 Heaters using particular connecting means
• CPC Class Codes: H05B 3/84 Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
• CPC Class Codes: H05B 3/86 the heating conductors being embedded in the transparent or reflecting material H05B3/845 takes precedence

Abstract

The present invention provides a laminated glass sheet for windshield that includes a transparent conductive film and enables ITS communication. The laminated glass sheet includes a first bus-bar arranged along an upper end of the laminated glass sheet, and a second bus-bar arranged along a lower end of the laminated glass sheet, and the first bus-bar includes a protruding portion that extends toward the second bus-bar, and the transparent conductive film is not formed in a concave portion that is formed by the protruding portion. Since the concave portion can be used for the communication, the conductive film may be free from an opening.

Claims

1. A laminated glass sheet for a windshield comprising at least two glass sheets, at least one thermoplastic resin film provided between the at least two glass sheets, and a transparent conductive film and bus-bars for supplying electric power to the transparent conductive film, the transparent conductive film and the bus-bars being formed on a surface of one of the glass sheets,

wherein the bus-bars comprise a first bus-bar arranged along an upper end of the laminated glass sheet, and a second bus-bar arranged along a lower end of the laminated glass sheet, and

wherein the first bus-bar comprises a protruding portion that extends toward the second bus-bar, and the transparent conductive film is not formed in a concave portion that is formed by the protruding portion.

2. The laminated glass sheet according to claim 1, wherein the transparent conductive film is free from an opening.

3. The laminated glass sheet according to claim 1, wherein the protruding portion has an inverted trapezoid shape.

4. The laminated glass sheet according to claim 1, further comprising a ceramic pattern, wherein the ceramic pattern is formed in a peripheral portion of the laminated glass sheet.

5. The laminated glass sheet according to claim 4, wherein the ceramic print is formed so as to cover at least the first bus-bar.

6. The laminated glass sheet according to claim 5, wherein the ceramic print has an inverted trapezoid shape that covers the protruding portion.

7. The laminated glass sheet according to claim 5, wherein the ceramic print has an opening in said concave portion.

8. The laminated glass sheet according to claim 1, wherein the transparent conductive film comprises a metal layer.

9. The laminated glass sheet according to claim 8, wherein the transparent conductive film further comprises an indium tin oxide (ITO) layer.