US 12,285,926 B2
Optical laminate with glass film and resin film
Junichi Inagaki, Ibaraki (JP); Takeshi Murashige, Ibaraki (JP); and Toshihiro Kanno, Ibaraki (JP)
Assigned to NITTO DENKO CORPORATION, Ibaraki (JP)
Appl. No. 17/433,398
Filed by NITTO DENKO CORPORATION, Ibaraki (JP)
PCT Filed Feb. 17, 2020, PCT No. PCT/JP2020/006031
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2020/175208, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-036551 (JP), filed on Feb. 28, 2019.
Prior Publication US 2022/0212448 A1, Jul. 7, 2022
Int. Cl. G02B 5/30 (2006.01); B32B 7/023 (2019.01); B32B 7/12 (2006.01); B32B 17/10 (2006.01); G02B 1/04 (2006.01); G02B 1/14 (2015.01)
CPC B32B 17/10018 (2013.01) [B32B 7/023 (2019.01); B32B 7/12 (2013.01); B32B 17/10458 (2013.01); G02B 1/04 (2013.01); G02B 1/14 (2015.01); G02B 5/305 (2013.01); B32B 2250/02 (2013.01); B32B 2307/412 (2013.01); B32B 2307/418 (2013.01); B32B 2307/42 (2013.01); B32B 2307/732 (2013.01); B32B 2457/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical laminate comprising a glass film and a resin film laminated with each other, the glass film being flexible and having a thickness of 150 μm or less, wherein
the glass film has a first principal surface and a second principal surface,
the resin film is laminated on the first principal surface of the glass film with an adhesive layer interposed therebetween, and
a number of contaminants having a size of 100 μm or more in the adhesive layer is 10/m2 or less;
wherein a number of contaminants having a size of 5 μm or more and less than 100 μm in the adhesive layer is 1300/m2 or less.