Electrochromic mirror

• US 7,391,549 B2
• Filed: 09/07/2004
• Issued: 06/24/2008
• Est. Priority Date: 09/26/2003
• Status: Expired due to Fees

• Current Assignee: Honda Lock Manufacturing Company Limited (Honda Motor Company)
• Original Assignee: Honda Lock Manufacturing Company Limited (Honda Motor Company)
• Inventors: Kukita, Tomoyuki
• Primary Examiner(s): Allen; Stephone B.
• Assistant Examiner(s): Chapel; Derek S
• Application Number:
  US10/934,741
• Publication Number:
  US 20050068604A1
• Time in Patent Office: 1,386 Days
• Field of Search: None
• US Class Current: 359/267
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
• CPC Class Codes: G02F 1/1524 Transition metal compounds
• CPC Class Codes: G02F 1/153 Constructional details
• CPC Class Codes: G02F 2001/1536 additional, e.g. protective, layer inside the cell

Abstract

An electrochromic mirror including a glass substrate, a transparent conductive film formed on the back of the glass substrate, an electrochromic layer formed on the back of the transparent conductive film, a reflection and electrode film formed on the back of the electrochromic layer in which the electrochromic layer and the reflection and electrode film are covered on the back thereof with an ion shielding oxide film, whereby the performance is stabilized and the productivity enhanced.

Claims

1. An electrochromic mirror comprising:

a glass substrate on one side thereof;

a transparent conductive film formed on the back of the glass substrate;

an electrochromic layer formed on the back of the transparent conductive film;

a reflection and electrode film formed on the back of the electrochromic layer;

the electrochromic layer and the reflection and electrode film being covered from the back thereof with an ion shielding oxide film comprising Al₂O₃ or Ta₂O₅ for preventing atmospheric ions from intruding into the electrochromic layer; and

an additional ion shielding oxide film comprising Al₂O₃ or Ta₂O₅;

the additional ion shielding oxide film being interposed between the glass substrate and the transparent conductive film for preventing ions from intruding from the glass substrate to the inside of the electrochromic layer.

2. The electrochromic mirror according to claim 1, wherein a portion of the electrochromic mirror excepting for the glass substrate is covered with a corrosion inhibitive coating layer.

3. The electrochromic mirror according to claim 1, wherein the ion shielding oxide film is covered from the back thereof with a corrosion inhibitive coating layer.