Electrochromic display substrate

• US 8,294,973 B2
• Filed: 12/20/2007
• Issued: 10/23/2012
• Est. Priority Date: 12/20/2007
• Status: Active Grant

• Current Assignee: Thales DIS France SA
• Original Assignee: Gemalto SA (Thales SA)
• Inventors: Pennaz, Thomas J.
• Primary Examiner(s): Mack, Ricky
• Assistant Examiner(s): TRA, TUYEN Q
• Application Number:
  US11/961,412
• Publication Number:
  US 20090161194A1
• Time in Patent Office: 1,769 Days
• Field of Search: 359265-275, 361/760, 361/761, 252/500, 252/514, 252/520.3, 252/389.53, 252/400.53
• US Class Current: 359/265
• CPC Class Codes: G02F 1/163 Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
• CPC Class Codes: Y10T 428/12229 Intermediate article [e.g., blank, etc.]

Abstract

A metal-plated copperless substrate for an electrochromic display. The display includes the substrate in the form of a backplane whereon circuitry of less than about 1 micron in thickness is patterned from the copperless metal. A transparent frontplane is coupled to the substrate with an electro-active ink material therebetween through which pixels may be activated to form an image for the display.

Claims

1. A method of forming an electrochromic display device, the method comprising:

providing an electrochromic display substrate of a backplane with patterned copperless circuit lines thereat;

coupling a frontplane over the electrochromic display substrate;

wherein the patterned copperless circuit lines are less than about 1 micron in thickness, the method further comprising printing a dielectric over the electrochromic display substrate prior to said coupling;

printing a conductive adhesive on the frontplane prior to said coupling;

printing electrochromic ink material over the dielectric prior to said coupling; and

curing the conductive adhesive after said coupling to stabilize the frontplane to the electrochromic display substrate.

2. A method of forming an electrochromic display device, the method comprising:

providing an electrochromic display substrate of a backplane with patterned copperless circuit lines thereat;

coupling a frontplane over the electrochromic display substrate;

wherein the patterned copperless circuit lines are of gold, the method further comprising;

etching an anode current collector and a cathode current collector into the electrochromic display substrate;

electroplating an anode battery component at a location on the electrochromic display substrate; and

printing a cathode battery component on the cathode current collector.

3. The method of claim 2 wherein the anode battery component includes zinc and the cathode battery component includes carbon manganese.