US 12,264,262 B2
Transparent films with control of light hue using nanoscale colorants
Xiqiang Yang, Hayward, CA (US); Yadong Cao, San Jose, CA (US); Yongxing Hu, Fremont, CA (US); Hua Gu, Dublin, CA (US); Ying-Syi Li, Fremont, CA (US); and Ajay Virkar, San Mateo, CA (US)
Assigned to EKC Technology, Inc., Hayward, CA (US)
Filed by C3 Nano, Inc., Hayward, CA (US)
Filed on Jul. 8, 2021, as Appl. No. 17/370,701.
Application 17/370,701 is a continuation of application No. 14/627,400, filed on Feb. 20, 2015, granted, now 11,111,396.
Claims priority of provisional application 62/065,314, filed on Oct. 17, 2014.
Prior Publication US 2021/0340386 A1, Nov. 4, 2021
Int. Cl. C09D 5/24 (2006.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01); G02B 1/16 (2015.01); G02B 5/00 (2006.01); G02B 5/22 (2006.01); G06F 1/16 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); H01B 5/14 (2006.01); G06F 3/045 (2006.01)
CPC C09D 5/24 (2013.01) [C09D 7/61 (2018.01); C09D 7/70 (2018.01); G02B 1/16 (2015.01); G02B 5/008 (2013.01); G02B 5/223 (2013.01); G06F 1/16 (2013.01); G06F 3/0412 (2013.01); G06F 3/0445 (2019.05); H01B 5/14 (2013.01); G02B 2207/101 (2013.01); G06F 3/045 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A transparent film comprising a substrate, a transparent conductive layer supported by the substrate, a coating layer and one or more nanoscale colorants, wherein a value of b* for the film is reduced at least about 0.1 units and total transmittance of visible light in percent is not decreased by more than about 2 relative to the corresponding film without the nanoscale colorants, the nanoscale colorants comprising gold, wherein the nanoscale colorants in a dilute dispersion have a peak absorption between 525 nm and 675 nm, wherein the transparent conductive layer comprises a fused metal nanostructured network and wherein the transparent film has a value of TT % of at least about 88%.