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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12280550 B1

PDFFull Text
Date of Patent:
Apr. 21, 2025

Filed:

Jun. 15, 2021

Methods for manufacturing thermoplastic liquid crystal polymer film and circuit board

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Takahiro Nakashima, Kamisu, JP;

Minoru Onodera, Kurashiki, JP;

Tatsuya Sunamoto, Chiyoda-ku, JP;

Assignee:

KURARAY CO., LTD., Kurashiki, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Christopher T Schatz

Int. Cl.
CPC ...
B29C 65/02 (2005.12); B29C 65/00 (2005.12); B32B 7/02 (2018.12); B32B 7/025 (2018.12); B32B 7/027 (2018.12); B32B 7/12 (2005.12); B32B 27/08 (2005.12); C08J 5/12 (2005.12); C09J 5/06 (2005.12); H05K 1/03 (2005.12); H05K 3/46 (2005.12); B29C 65/48 (2005.12); B29C 65/50 (2005.12); B29K 105/00 (2005.12); B29L 31/34 (2005.12);
U.S. Cl.
CPC ...
B29C 65/02 (2012.12); B29C 66/00145 (2012.12); B29C 66/028 (2012.12); B29C 66/73 (2012.12); B32B 7/02 (2012.12); B32B 7/025 (2018.12); B32B 7/027 (2018.12); B32B 7/12 (2012.12); B32B 27/08 (2012.12); C08J 5/121 (2012.12); C09J 5/06 (2012.12); H05K 1/032 (2012.12); H05K 3/4644 (2012.12); B29C 65/4815 (2012.12); B29C 65/5057 (2012.12); B29C 66/0242 (2012.12); B29C 66/1122 (2012.12); B29C 66/45 (2012.12); B29C 66/73111 (2012.12); B29C 66/73115 (2012.12); B29C 66/73921 (2012.12); B29K 2105/0079 (2012.12); B29L 2031/3425 (2012.12); B32B 2307/206 (2012.12); B32B 2457/202 (2012.12); C08J 2300/12 (2012.12); C08J 2367/00 (2012.12); C08J 2467/00 (2012.12); C09J 2203/326 (2012.12); C09J 2301/312 (2020.07); C09J 2467/00 (2012.12); C09J 2467/006 (2012.12); H05K 2201/0141 (2012.12);
Abstract

A method producing thermoplastic liquid crystal polymer (TLCP) film(s) may include (i) preparing a TLCP film (adherend film) and a TLCP film (adhesive film); (ii) examining each TLCP film for relative intensity calculated as a ratio in percentage of a sum of peak areas of C—O bond peak and COO bond peak based on the total area of C1s peaks in the X-ray photoelectron spectroscopy (XPS) profile to calculate relative intensity X (%) for the adherend film and relative intensity Y (%) for the adhesive film; and (iii) controlling the TLCP film adhesive film to have a relative intensity Y by selection or activation treatment of the adhesive film so that the relative intensity X of the adherend film and the relative intensity Y of the adhesive film satisfy38≤≤65  (1), and−8.0≤≤8.0  (2).

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