US 11,945,907 B2
Liquid crystal polymer film and laminate comprising the same
An-Pang Tu, Taipei (TW); Chia-Hung Wu, Taipei (TW); and Chien-Chun Chen, Taipei (TW)
Assigned to CHANG CHUN PLASTICS CO., LTD., Taipei (TW)
Filed by Chang Chun Plastics Co., Ltd., Taipei (TW)
Filed on Dec. 18, 2020, as Appl. No. 17/126,431.
Claims priority of provisional application 62/952,553, filed on Dec. 23, 2019.
Prior Publication US 2021/0187884 A1, Jun. 24, 2021
Int. Cl. B09B 3/80 (2022.01); B29C 41/12 (2006.01); B29D 7/01 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B32B 27/36 (2006.01); C08G 63/06 (2006.01); C08G 63/60 (2006.01); C08G 63/83 (2006.01); C08J 5/18 (2006.01); C08L 67/04 (2006.01); C09K 19/38 (2006.01); H05K 1/03 (2006.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01)
CPC C08G 63/065 (2013.01) [B29C 41/12 (2013.01); B29D 7/01 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/36 (2013.01); C08G 63/06 (2013.01); C08G 63/60 (2013.01); C08G 63/83 (2013.01); C08J 5/18 (2013.01); C08L 67/04 (2013.01); C09K 19/3809 (2013.01); H05K 1/032 (2013.01); B29K 2067/00 (2013.01); B29K 2105/0079 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2305/55 (2013.01); B32B 2307/538 (2013.01); B32B 2307/704 (2013.01); B32B 2307/732 (2013.01); B32B 2457/08 (2013.01); C08G 2250/00 (2013.01); C08J 2367/04 (2013.01); C08L 2203/16 (2013.01); H05K 2201/0141 (2013.01)] 13 Claims
 
1. A liquid crystal polymer film, wherein a material of the liquid crystal polymer film is a liquid crystal polymer resin comprising a structural unit represented by Formula (1):
-L1-Ar-L2-  (1);
wherein -L1- and -L2- are respectively —O— or —CO—; —Ar— is an arylene group;
wherein Formula (1) comprises structural units as follows:

OG Complex Work Unit Chemistry
wherein based on a total molar number of the structural unit represented by Formula (1), a molar number of the structural unit represented by Formula (I) is in the range from 15 mole % to 40 mole %, and a sum of molar numbers of the structural units represented by Formulae (I) and (II) is in the range from 80 mole % to 100 mole %;
wherein the liquid crystal polymer film has a thickness in the unit of μm and a transmittance (TT %), wherein when values of the thickness and the transmittance are put into Formula (III): log(1/TT %)/(thickness)0.5, an obtained value is larger than 0.055 and smaller than 0.090;
wherein the liquid crystal polymer film comprises a first surface and a second surface opposite each other, and a Kurtosis (Sku) of the first surface is equal to or larger than 1 and smaller than or equal to 300.