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1. (WO2018198982) CIRCUIT BOARD AND LIGHT-EMITTING DEVICE PROVIDED WITH SAME

Pub. No.:    WO/2018/198982    International Application No.:    PCT/JP2018/016330
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 21 01:59:59 CEST 2018
IPC: H01L 33/60
H01L 33/62
H05K 1/02
Applicants: KYOCERA CORPORATION
京セラ株式会社
Inventors: ABE,Yuuichi
阿部 裕一
Title: CIRCUIT BOARD AND LIGHT-EMITTING DEVICE PROVIDED WITH SAME
Abstract:
A circuit board according to the present disclosure is provided with: a substrate; a conductor layer located on the substrate; a reflective layer located on the conductor layer; and a resin layer which is located on the substrate and which is located in contact with the conductor layer and the reflective layer. Furthermore, the surface of the reflective layer has an arithmetic mean roughness Ra, which is obtained from a roughness curve, of less than 0.2 μm, and has a ratio of kurtosis Rku, which is obtained from the roughness curve, to skewness Rsk, which is obtained from the roughness curve, of 5-15, inclusive.