US 12,461,281 B2
Anti-reflective film laminate and product provided with same
Takashi Tamura, Shimotsuke (JP); Tadaaki Toyoshima, Shimotsuke (JP); Yuji Kato, Shimotsuke (JP); Hiroki Inoue, Shimotsuke (JP); Takayuki Hisa, Shimotsuke (JP); and Yunosuke Fujita, Shimotsuke (JP)
Assigned to DEXERIALS CORPORATION, Shimotsuke (JP)
Appl. No. 17/911,718
Filed by DEXERIALS CORPORATION, Shimotsuke (JP)
PCT Filed Mar. 26, 2021, PCT No. PCT/JP2021/012932
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/200678, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-063354 (JP), filed on Mar. 31, 2020.
Prior Publication US 2023/0111821 A1, Apr. 13, 2023
Int. Cl. G02B 1/11 (2015.01); B32B 7/022 (2019.01); B32B 7/023 (2019.01); B32B 7/12 (2006.01)
CPC G02B 1/11 (2013.01) [B32B 7/022 (2019.01); B32B 7/023 (2019.01); B32B 7/12 (2013.01); B32B 2250/05 (2013.01); B32B 2307/412 (2013.01); B32B 2307/418 (2013.01); B32B 2307/536 (2013.01); B32B 2307/732 (2013.01); B32B 2315/08 (2013.01); B32B 2367/00 (2013.01); B32B 2457/20 (2013.01); B32B 2605/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An anti-reflective film laminate comprising:
a first transparent base material that has a first surface and a second surface which is a surface on a back side with respect to the first surface;
an anti-reflective layer that comprises: a hard coat layer; an inorganic multilayer film layer; and an antifouling layer provided in order on the first surface; and
an adhesion layer provided on the second surface,
wherein the adhesion layer consists of two adhesive layers and a second transparent base material sandwiched between the two adhesive layers and directly adhering to each of the two adhesive layers,
wherein a reflectance Y of the anti-reflective film laminate is 0.8% or less when light with a wavelength of 380 nm to 780 nm is incident at an incidence angle of 5° from a standard light source D65,
wherein a breaking force of the anti-reflective film laminate is 5.7 N or more in a case where a conical probe with a diameter of 8 mm is pressed at a piercing test speed of 500 mm/min,
wherein the first transparent base material is a triacetylcellulose film having a thickness of 80 μm or less,
wherein the hard coat layer contacts the first surface,
wherein the hard coat layer is a single layer having a thickness of 0.5 to 5 μm,
wherein the adhesion layer contacts the second surface,
wherein the inorganic multilayer film layer is a laminate of a low refractive index material layer and a high refractive index material layer, and each of the low refractive index material layer and the high refractive index material layer is a sputtering film,
wherein the second transparent base material is a polyethylene terephthalate film having a thickness of 9 μm or less,
wherein each of the two adhesive layers is provided on each surface of the second transparent base material,
wherein each difference of refractive index between each of the two adhesive layers and the second transparent base material is 0.12 or less, and
wherein a thickness of the anti-reflective film laminate is 170 μm or less.