Transparent conductor and optical display including the same

Patent metadata

Field	Value
Publication number	US-9978472-B2
Application number	US-201514638730-A
Country	US
Kind code	B2
Filing date	Mar 4, 2015
Priority date	Mar 5, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A transparent conductor and an optical display including the same are disclosed. The transparent conductor includes a base layer, and a transparent conductive layer formed on the base layer and including metal nanowires. The transparent conductor has a total diffuse reflection (DR) of greater than or equal to about 80% and less than 330% at a wavelength of about 380 nm to about 780 nm and a reflective b* value from about −2 to about 1 at a wavelength of about 380 nm to about 780 nm.

First claim

What is claimed is:

1. A transparent conductor, comprising:
a base layer;
a high refractive index coating layer on the base layer;
a transparent conductive layer on the high refractive index coating layer; and
a low refractive index coating layer on the transparent conductive layer, wherein:
the transparent conductive layer includes metal nanowires,
the low refractive index coating layer includes a mixture of a first dye having a maximum absorption wavelength of about 450 nm to about 550 nm and a second dye having a maximum absorption wavelength of about 350 nm to about 449 nm, and
the transparent conductor has a total diffuse reflection (DR) of greater than or equal to about 80% and less than 330% at a wavelength of about 380 nm to about 780 nm and a reflective b* value from about −2 to about 1 at a wavelength of about 380 nm to about 780 nm.

2. The transparent conductor as claimed in claim 1 , wherein the metal nanowires include silver nanowires.

3. The transparent conductor as claimed in claim 1 , wherein the high refractive index coating layer has an index of refraction of about 1.7 to about 1.9.

4. The transparent conductor as claimed in claim 1 , wherein the high refractive index coating layer has a thickness of about 40 nm to about 100 nm.

5. The transparent conductor as claimed in claim 1 , wherein the high refractive index coating layer includes titanium oxide, zirconium oxide, silicon oxide, or a combination thereof.

6. The transparent conductor as claimed in claim 1 , wherein the low refractive index coating layer has an index of refraction of about 1.3 to about 1.38.

7. The transparent conductor as claimed in claim 1 , wherein the low refractive index coating layer has a thickness of about 50 nm to about 150 nm.

8. The transparent conductor as claimed in claim 1 , wherein the low refractive index coating layer includes inorganic particles having an index of refraction of about 1.30 to about 1.38.

9. The transparent conductor as claimed in claim 8 , wherein the inorganic particles include hollow silica particles, porous silica particles, or a combination thereof.

10. The transparent conductor as claimed in claim 8 , wherein at least one of the first dye and second dye includes an anthraquinone dye.

11. The transparent conductor as claimed in claim 1 , wherein the transparent conductive layer has a thickness of about 100 nm to about 150 nm.

12. The transparent conductor as claimed in claim 1 , wherein the transparent conductor has a transmittance x value of about 0.3 to about 0.4 and a transmittance y value of about 0.3 to about 0.4 at a wavelength of about 380 nm to about 780 nm.

13. An optical display comprising the transparent conductor as claimed in claim 1 .

Assignees

• Samsung Sdi Co Ltd

Inventors

• Kim Do Young
• Koo Young Kwon
• Shin Dong Myeong
• Lim Hyoung Tae
• Hwang Oh Hyeon
• Kang Kyoung Ku

Classifications

• H01L51/5206

  Electricity · mapped topic

• Y10T428/249969

  Of silicon-containing material [e.g., glass, etc.] · CPC title

• H01L31/022491

  Electricity · mapped topic

• Y10T428/265

  1 mil or less · CPC title

• H01L51/5275

  Electricity · mapped topic