US 12,426,185 B2
Composite element
Robert Hettler, Kumhausen (DE); Wee Kiat Chai, Singapore (SG); Rainer Graf, Landshut (DE); and Helena Haslbeck, Frontenhausen (DE)
Assigned to Schott AG, Mainz (DE)
Filed by Schott AG, Mainz (DE)
Filed on Feb. 24, 2023, as Appl. No. 18/113,929.
Application 18/113,929 is a continuation of application No. PCT/EP2021/073387, filed on Aug. 24, 2021.
Claims priority of application No. 20192446 (EP), filed on Aug. 24, 2020.
Prior Publication US 2024/0023262 A1, Jan. 18, 2024
Int. Cl. H05K 5/03 (2006.01); H05K 5/04 (2006.01)
CPC H05K 5/03 (2013.01) [H05K 5/04 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A composite element, comprising:
an outer holder; and
an inner component which is held in the outer holder under a compressive stress, the outer holder and the inner component adjoining one another along a contour line which is closed, the contour line including two linear portions and two connecting portions, the two linear portions opposing one another and extending in a straight line, the two connecting portions connecting the two linear portions to form the contour line as closed, at least one of the two connecting portions having an arcuately extending curved region, wherein the outer holder comprises or consists of a first material which has a first coefficient of thermal expansion, the inner component comprises or consists of a second material which has a second coefficient of thermal expansion, and the first coefficient of thermal expansion is greater than the second coefficient of thermal expansion, and wherein a contact pressure along the contour line is positive at all points, and a stress on the inner component along the contour line is less than 300 MPa.