Title:
LAMINATE COATED WITH ASYMMETRIC METAL FOILS, AND PRINTED CIRCUIT BOARD INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2022/141662
Kind Code:
A1
Abstract:
Provided are a laminate coated with asymmetric metal foils, and a printed circuit board including same. The laminate coated with asymmetric metal foils comprises one or at least two stacked low-modulus prepregs, and a metal foil which is coated on one side of the one or at least two stacked low-modulus prepregs, or metal foils having different thicknesses which are coated on two sides of the one or at least two stacked low-modulus prepregs. The modulus of elasticity of the low-modulus prepreg is 22 GPa or less after the low-modulus prepreg is cured. By means of the present invention, a low-modulus prepreg having a modulus of elasticity of 22 GPa or less after curing is selected as an insulating material for a laminate coated with asymmetric metal foils, such that the resultant laminate coated with asymmetric metal foils and a printed circuit board manufactured therefrom have a relatively low A-state warpage and a warpage which is obtained after reflow soldering processing, thereby ensuring the reliability of the printed circuit board.
Inventors:
TANG JUNQI (CN)
LI ZHIGUANG (CN)
LI ZHIGUANG (CN)
Application Number:
PCT/CN2021/070942
Publication Date:
July 07, 2022
Filing Date:
January 08, 2021
Export Citation:
Assignee:
SHENGYI TECHNOLOGY CO LTD (CN)
International Classes:
H05K1/02; B32B15/04; B32B15/20; B32B27/12
Foreign References:
| CN108559209A | 2018-09-21 | |||
| CN108239372A | 2018-07-03 | |||
| CN111378098A | 2020-07-07 | |||
| CN105061764A | 2015-11-18 | |||
| CN202293493U | 2012-07-04 | |||
| CN207327759U | 2018-05-08 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
Previous Patent: SLOT ARRAY ANTENNA
Next Patent: CELL DETERMINING METHOD AND APPARATUS, DEVICE, AND STORAGE MEDIUM
Next Patent: CELL DETERMINING METHOD AND APPARATUS, DEVICE, AND STORAGE MEDIUM