US 12,441,088 B2
Substrate and method for producing the substrate
Nele Reimer, Graz (AT); and Manfred Schweinzger, Schwanberg (AT)
Assigned to TDK Electronics AG, Munich (DE)
Filed by TDK Electronics AG, Munich (DE)
Filed on Jan. 24, 2024, as Appl. No. 18/421,673.
Application 18/421,673 is a division of application No. 17/312,701, granted, now 11,958,271, previously published as PCT/EP2019/083867, filed on Dec. 5, 2019.
Claims priority of application No. 102018131605.4 (DE), filed on Dec. 10, 2018.
Prior Publication US 2024/0157683 A1, May 16, 2024
Int. Cl. B32B 18/00 (2006.01); C04B 37/00 (2006.01)
CPC B32B 18/00 (2013.01) [C04B 37/001 (2013.01); C04B 2237/343 (2013.01); C04B 2237/361 (2013.01); C04B 2237/365 (2013.01); C04B 2237/366 (2013.01); C04B 2237/368 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a substrate, the method comprising:
forming a green sheet stack comprising first green sheets and second green sheets,
wherein each of the first green sheets and the second green sheets contains a ceramic material as a main component,
wherein the first green sheets are free from a first sintering aid,
wherein the second green sheets contain a second sintering aid, and
wherein the green sheet stack is formed such that each terminating layer of the green sheet stack consists of at least one first green sheet forming the outermost layer of the green sheet stack.