Porous electrode sheet, method for producing the same, and display device

• US 8,941,908 B2
• Filed: 12/15/2011
• Issued: 01/27/2015
• Est. Priority Date: 12/28/2010
• Status: Active Grant

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Moriyama, Junichi, Nagai, Yozo, Furuyama, Satoru, Yamamoto, Hajime
• Primary Examiner(s): TRA, TUYEN Q
• Application Number:
  US13/988,978
• Publication Number:
  US 20130286460A1
• Time in Patent Office: 1,139 Days
• Field of Search: 359265-275, 345/105, 174/258, 361/748
• US Class Current: 359/265
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/1536 additional, e.g. protective, layer inside the cell
• CPC Class Codes: G02F 2001/1552 Inner electrode, e.g. the electrochromic layer being sandwiched between the inner electrode and the support substrate
• CPC Class Codes: H05K 1/0306 Inorganic insulating substrates, e.g. ceramic, glass
• CPC Class Codes: H05K 1/09 Use of materials for the conductive, e.g. metallic pattern
• CPC Class Codes: H05K 13/00 Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing

Abstract

A porous electrode sheet (1) includes a resin film (2) being transparent and having insulating properties, and a transparent electrode (3) placed on one face (2a) of the resin film (2). The resin film (2) is provided with a plurality of through holes (21) extending linearly from the one face (2a) to the other face (2b). The transparent electrode (3) has openings (31) at positions corresponding respectively to the through holes (21). The through holes (21) of the resin film (2) and the openings (31) of the transparent electrode (3) communicate with each other, and thereby form passages (10) penetrating the porous electrode sheet (1) in the thickness direction.

Claims

1. A display device, comprising:

a porous electrode sheet comprising;

a transparent resin film having insulating properties, the resin film being provided with a plurality of through holes extending linearly from one face of the resin film to the other face; and

a transparent electrode placed on the one face of the resin film and having openings at positions corresponding respectively to the plurality of through holes;

an electrochromic layer provided in contact with the transparent electrode of the porous electrode sheet; and

an address electrode facing the porous electrode sheet across a space filled with an electrolyte.

2. A method for producing a porous electrode sheet, the method comprising the steps of:

forming a plurality of modified tracks by irradiating a resin base material that is transparent and imperforate with an ion beam so that the plurality of modified tracks extend in such a way as to penetrate the resin base material in a thickness direction;

obtaining a resin film having a plurality of through holes by subjecting the resin base material to chemical etching using the modified tracks as base points; and

forming, on one face of the resin film, a transparent electrode having openings at positions corresponding respectively to the plurality of through holes.