US 11,903,126 B2
Laminate, electronic component, and laminate production method
Sadaaki Sakamoto, Kyoto (JP); Yutaka Senshu, Kyoto (JP); and Yasutaka Sugimoto, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Jun. 11, 2021, as Appl. No. 17/345,141.
Application 17/345,141 is a continuation of application No. PCT/JP2019/049015, filed on Dec. 13, 2019.
Claims priority of application No. 2018-238709 (JP), filed on Dec. 20, 2018.
Prior Publication US 2021/0307162 A1, Sep. 30, 2021
Int. Cl. H05K 1/02 (2006.01); H05K 1/03 (2006.01); B32B 17/06 (2006.01); B32B 37/18 (2006.01); C03C 10/00 (2006.01); H01L 23/15 (2006.01); B32B 3/26 (2006.01); B32B 37/06 (2006.01)
CPC H05K 1/0306 (2013.01) [B32B 3/266 (2013.01); B32B 17/06 (2013.01); B32B 37/06 (2013.01); B32B 37/18 (2013.01); C03C 10/0018 (2013.01); C03C 10/0054 (2013.01); B32B 2255/205 (2013.01); B32B 2307/202 (2013.01); B32B 2307/206 (2013.01); B32B 2310/049 (2013.01); B32B 2311/08 (2013.01); B32B 2311/12 (2013.01); B32B 2315/02 (2013.01); B32B 2315/08 (2013.01); B32B 2457/04 (2013.01); C03C 2204/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A laminate comprising multiple glass ceramic layers each containing quartz and a glass, wherein the glass contains SiO2, B2O3, Al2O3, and M2O, and wherein M is an alkali metal,
a B concentration of the laminate being lower at a surface layer portion of the laminate than at an inner layer portion of the laminate.