Transparent conductor and device

• US 9,763,320 B2
• Filed: 03/05/2015
• Issued: 09/12/2017
• Est. Priority Date: 03/05/2014
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Naito, Katsuyuki, Yoshinaga, Norihiro, Yang, Tianyi, Akasaka, Yoshihiro
• Primary Examiner(s): VU, HUNG K
• Application Number:
  US14/639,318
• Publication Number:
  US 20150257258A1
• Time in Patent Office: 922 Days
• Field of Search: 257 99, 257100, 257103
• CPC Class Codes: H01L 33/42 Transparent materials
• CPC Class Codes: H01L 33/486 adapted for surface mounting
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: H05K 1/0274 Optical details, e.g. printed circuits comprising integral optical means H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42
• CPC Class Codes: H05K 1/144 Stacked arrangements of planar printed circuit boards
• CPC Class Codes: H05K 2201/0108 Transparent
• CPC Class Codes: H05K 2201/0323 Carbon
• CPC Class Codes: H05K 2201/0379 Stacked conductors

Abstract

According to one embodiment, a transparent conductor includes a transparent substrate; a metal nanowire layer disposed on the transparent substrate and including a plurality of metal nanowires; a graphene oxide layer covering the metal nanowire layer; and an electrical insulating resin layer disposed in contact with the graphene oxide layer.

Claims

1. A transparent conductor comprising:

a transparent substrate;

a metal nanowire layer disposed on the transparent substrate and comprising a plurality of metal nanowires, the metal nanowires comprising fused metal nanowires;

a first graphene oxide layer covering the metal nanowire layer;

an electrical insulating resin layer disposed in contact with the graphene oxide layer, and

further comprising a second graphene oxide layer interposed between the transparent substrate and the metal nanowire layer.

2. The transparent conductor according to claim 1, wherein a stack comprising the metal nanowire layer, the first and second graphene oxide layers, and the electrical insulating resin layer has a patterned form.

3. The transparent conductor according to claim 1, wherein the first and second graphene oxide layers comprises metal nanoparticles therein or thereon.

4. The transparent conductor according to claim 1, wherein the metal nanowires are silver nanowires.

5. The transparent conductor according to claim 1, wherein the electrical insulating resin layer comprises a resin having a polar group.

6. A transparent conductor comprising:

a transparent substrate;

a metal nanowire layer disposed on the transparent substrate and comprising a plurality of metal nanowires, the metal nanowires comprising fused silver nanowires;

a graphene oxide layer covering the metal nanowire layer and comprising metal nanoparticles therein or thereon, the metal nanoparticles being made of silver; and

an electrical insulating resin layer disposed in contact with the graphene oxide layer.