US 12,031,708 B2
Elastic resin sheet having light-diffusing portion, and light-emitting sheet using same preliminary class
Tomohiro Fukao, Osaka (JP); Tomoaki Sawada, Osaka (JP); Kyosuke Michigami, Hyogo (JP); Keiko Kashihara, Osaka (JP); and Chihiro Horii, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed on Oct. 4, 2023, as Appl. No. 18/376,702.
Application 18/376,702 is a continuation of application No. PCT/JP2022/017782, filed on Apr. 14, 2022.
Claims priority of application No. 2021-069766 (JP), filed on Apr. 16, 2021.
Prior Publication US 2024/0027053 A1, Jan. 25, 2024
Int. Cl. F21V 3/06 (2018.01); B29C 59/02 (2006.01); B29L 31/00 (2006.01); B32B 5/02 (2006.01); B32B 15/14 (2006.01); B32B 15/20 (2006.01); B32B 27/12 (2006.01); B32B 27/26 (2006.01); B32B 27/38 (2006.01); F21Y 115/10 (2016.01)
CPC F21V 3/0625 (2018.02) [B32B 5/02 (2013.01); B32B 15/14 (2013.01); B32B 15/20 (2013.01); B32B 27/12 (2013.01); B32B 27/26 (2013.01); B32B 27/38 (2013.01); B29C 59/02 (2013.01); B29L 2031/747 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2307/202 (2013.01); B32B 2307/51 (2013.01); B32B 2307/538 (2013.01); B32B 2307/54 (2013.01); B32B 2457/00 (2013.01); F21Y 2115/10 (2016.08)] 16 Claims
OG exemplary drawing
 
1. An elastic resin sheet that is a resin sheet formed using a resin composition containing a thermosetting resin including an epoxy resin and a curing agent, wherein:
when a maximum height of a surface roughness on a first surface of the resin sheet is Rz1 (μm), a maximum height of a surface roughness on a second surface facing the first surface is Rz2 (μm), and a thickness is t (μm), the Rz1, the Rz2, and the thickness t (μm) satisfy relation of the following Formula (1):
(Rz1+Rz2)/t≤0.5  (1)
the elastic resin sheet comprises a light-diffusing portion having irregularities with an arithmetic mean roughness Ra of 0.3 μm or more and 5.0 μm or less on at least one of the first surface and the second surface, and
the elastic resin sheet has an initial tensile modulus of 0.5 MPa or more and 500 MPa or less.