Electrochromic safety glazing

• US 20050025980A1
• Filed: 07/18/2003
• Published: 02/03/2005
• Est. Priority Date: 04/24/2001
• Status: Active Grant

• Current Assignee: Dritte Patentportfolio Beteiligungsgesellschaft mbH & Co. KG
• Original Assignee: Magna Donnelly
• Inventors: Agrawal, Anoop, Holdmann, Torsten, Elkadi, Yasser
• Granted Patent: US 6,995,891 B2
• Time in Patent Office: Days
• US Class Current: 428/426
• 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 17/10321 Laminated safety glass or glazing containing liquid layers
• CPC Class Codes: B32B 17/10513 Electrochromic layer
• CPC Class Codes: B32B 17/10871 in combination with particular heat treatment
• CPC Class Codes: G02F 1/1525 characterised by a particular ion transporting layer, e.g. electrolyte
• CPC Class Codes: G02F 2001/164 the electrolyte is made of polymers
• CPC Class Codes: G02F 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G02F 2202/022 polymeric
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements

Abstract

An electrochromic device is achieved that exhibits the characteristics of impact-resistant safety glass by starting with a solid electrolyte sheet material and a peripheral sealant material sandwiched between substrates to heat and pressure such that the electrolyte bonds to the treated surfaces of the substrates with an adhesion of at least 1.8 kg/linear cm width causing the electrolyte to exhibit a tensile strength of at least 5 kg/cm².

Claims

1-24. -24. (cancelled)

25. An electrochromic laminate made by placing sealing material around perimeter of an electrolyte sheet positioned on a first substrate, covering the sheet with a second substrate that extends over the sealing material, and subjecting both the electrolyte sheet and the sealing material to simultaneously applied heat and pressure.

26. An electrochromic laminate as in claim 25 which is impact resistant.

27. An electrochromic laminate as in 26 which reduces sound transmission at least 3 dB.