US 12,295,098 B2
Multilayer board and manufacturing method thereof
Hung-Jung Lee, Taoyuan (TW)
Assigned to AZOTEK CO., LTD., Taoyuan (TW)
Filed by AZOTEK CO., LTD., Taoyuan (TW)
Filed on Jun. 7, 2024, as Appl. No. 18/736,562.
Application 18/736,562 is a division of application No. 18/053,365, filed on Nov. 7, 2022, granted, now 12,058,811.
Claims priority of provisional application 63/269,836, filed on Mar. 24, 2022.
Claims priority of application No. 111124134 (TW), filed on Jun. 28, 2022.
Prior Publication US 2024/0324100 A1, Sep. 26, 2024
Int. Cl. H05K 1/03 (2006.01); B32B 7/027 (2019.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B32B 27/36 (2006.01); B32B 37/04 (2006.01); B32B 37/10 (2006.01); B32B 37/14 (2006.01); B32B 37/16 (2006.01); H05K 3/46 (2006.01)
CPC H05K 1/032 (2013.01) [B32B 7/027 (2019.01); B32B 15/09 (2013.01); H05K 3/4626 (2013.01); B32B 15/08 (2013.01); B32B 15/20 (2013.01); B32B 27/36 (2013.01); B32B 37/04 (2013.01); B32B 37/10 (2013.01); B32B 37/144 (2013.01); B32B 37/16 (2013.01); B32B 2250/05 (2013.01); B32B 2250/40 (2013.01); B32B 2250/42 (2013.01); B32B 2270/00 (2013.01); B32B 2305/55 (2013.01); B32B 2307/30 (2013.01); B32B 2307/704 (2013.01); B32B 2309/02 (2013.01); B32B 2311/00 (2013.01); B32B 2367/00 (2013.01); B32B 2457/08 (2013.01); H05K 1/036 (2013.01); H05K 3/4632 (2013.01); H05K 2201/0129 (2013.01); H05K 2201/0141 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A multilayer board, comprising:
a plurality of laminates that are stacked from bottom to top, wherein a number of the laminates is 6, each of the laminates is a single sided board or a double sided board and comprises a liquid crystal polymer substrate and at least one metal layer, each of the liquid crystal polymer substrates has a melting point,
the number of the liquid crystal polymer substrates is 6, the liquid crystal polymer substrates comprise a first middle substrate and a second middle substrate that are located in the most middle position, the first middle substrate is located on the second middle substrate, a first melting point of the first middle substrate or a second melting point of the second middle substrate is lowest among the melting points of the liquid crystal polymer substrates, the first melting point and the second melting point are same, the melting points of the liquid crystal polymer substrates increase in a direction away from the first middle substrate and the second middle substrate, the melting point of the liquid crystal polymer substrate adjacent to the first middle substrate is 33° C. to 57° C. higher than the first melting point of the first middle substrate, and the melting points of the liquid crystal polymer substrates between the first middle substrate and an upper surface of the multilayer board increases from bottom to top.