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Title:
METHOD FOR ESTIMATING EXPANSION AND CONTRACTION COMPENSATION COEFFICIENT OF NEW PCB MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/119770
Kind Code:
A1
Abstract:
A method for estimating an expansion and contraction compensation coefficient of a new PCB material. The method comprises: selecting a common PCB material as a contrast material; respectively testing the expansion and contraction change values of a first core plate and a first prepreg of a new PCB material, and respectively testing the expansion and contraction change values of a second core plate and a second prepreg of the contrast material; carrying out a contrastive analysis on the expansion and contraction change values and the differences of the first core plate and the second core plate in respective processing flows; carrying out a contrastive analysis on the expansion and contraction change values and the differences of the first prepreg and the second prepreg in respective processing flows; and carrying out analogical derivation in combination with an expansion and contraction compensation rule of the contrast material, and deriving an expansion and contraction compensation rule of the new PCB material. According to the present invention, the expansion and contraction variation of a new PCB material can be quickly and effectively derived, so as to obtain an expansion and contraction compensation coefficient of the new PCB material, without requiring bulk testing of the expansion and contraction variation of a copper thickness, a plate thickness, a copper residual rate, a prepreg type, a prepreg number, etc., when designing different laminations of the new PCB material, thereby saving a large amount of manpower, material resources and financial resources.

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Inventors:
CHENG LIUJUN (CN)
LI HUA (CN)
LI YANGUO (CN)
CHEN BEI (CN)
Application Number:
PCT/CN2018/093630
Publication Date:
June 27, 2019
Filing Date:
June 29, 2018
Export Citation:
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Assignee:
GUANGZHOU FASTPRINT CIRCUIT TECH CO LTD (CN)
SHENZHEN FASTPRINT CIRCUIT TECH CO LTD (CN)
International Classes:
G01B21/00
Foreign References:
CN108072343A2018-05-25
CN106061106A2016-10-26
CN1955734A2007-05-02
CN105636345A2016-06-01
CN106572600A2017-04-19
US4783826A1988-11-08
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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