Fukui Precision Component (shenzhen) Co., Ltd.

Foxconn Advanced Technology Inc.

Zhen Ding Technology Co., Ltd.

I-Hsien Chiang

Cheng-Hsien Lin

Chih-Yi Tu

Qi Wang

Li Xiao

Ying Su

Yong-Hui Feng

A method of detecting faulty via holes of a printed circuit board. The printed circuit board including a number of electric trace segments. The method includes steps of: providing a testing system, the testing system comprising a processor, a storing means and a resistance measuring device, the storing means for storing a function Y=f(X) wherein X represents a reference resistance associated with a given electric trace segment, Yrepresents a minimum threshold value; measuring a resistance of an electric trace segment of a to-be-tested printed circuit board using the resistance measuring device, a to-be-tested via hole located on the electric trace segment; and judging whether the to-be-tested via hole is a faulty via hole according to the following criteria: if |Xa&#x2212;X|&#x2267;Y, the to-be-tested via hole is a faulty via hole, and if |Xa&#x2212;X|&#x3c;Y, the to-be-tested via hole is an acceptable via hole, wherein Xa represents the measured resistance of the given electric trace segment counterpart of the to-be-tested printed circuit board.

Method of detecting faulty via holes in printed circuit boards

An exemplary mounting support for a flexible printed circuit board is provided. The flexible printed circuit board has a side surface and at least one electronic component mounted on the side surface. The mounting support includes a first surface for contacting with the side surface of the flexible printed circuit board and a second surface on an opposite side of the mounting support to the first surface. The mounting support has at least one first recess defined in the first surface for receiving the at least one electronic component therein and at least one through-hole defined through the first surface and the second surface. The mounting support has at least one second recess defined in the second surface. The mounting support can fix a double surface mounted flexible printed circuit board flatly, thereby enhancing laser processing precision.

Retaining apparatus for a flexible printed circuit board

In one embodiment, a holder for holding printed circuit boards includes a base plate with a plurality of holding unit formed thereon. Each of the holding units includes a spring member, a securing member, and a blocking structure. The spring member includes a first end and a second end. The first end is attached to the base plate. The securing member is slideably mounted on the base plate. The securing member includes a connecting end and a securing end. The connecting end is connected with the second end of the spring member. The blocking structure is located on the base plate. The spring member is configured for pressing the securing member to move toward the blocking structure such that a printed circuit board is retainable between the securing end of the securing member and the blocking structure on the base plate. The holder is capable of holding printed circuit boards in batches.

Apparatus for holding printed circuit boards

The present inventions relates to a method for manufacturing a multilayer FPCB having different number of layers in different areas. The method includes the steps of: providing a binder layer; removing a portion of the binder layer thereby defining an opening in the binder layer; forming a multilayer FPCB which having a first copper clad laminate structure and a second copper clad laminate structure disposed on two opposite sides of the binder layer respectively using the binder layer; cutting the first copper clad laminate structure; cutting the multilayer FPCB in manner that a portion of first copper clad laminate structure that is exposed to the opening is separated from the first copper clad structure thereby obtain a multilayer FPCB having different number of layers in different areas.

Growing community of inventors

Taoyuan, Taiwan

I-Hsien Chiang