Author Archives: WorkingBear

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Apr22
HotBar FPC Design Notices

The HotBar soldering is a kind of selective soldering solution where connect two pre-fluxed, solder coated parts by pulse heating element, call a “thermode”, with proper temperature to melt the solder and re-solder. Applying a pressure and contacting on the … Continue reading

Apr21
Design for Flex cable(FPC) Trace Pattern

Many FPCB designer are not familiar with the manufacturer process and limitation.  I always found design does not meet DFx requirement and insist on their design and finally bring lot of quality issue after mass production. Here I ask FPCB … Continue reading

Apr20
Screen-Printing on PET(PolyEthylene Terephthalate) notices

The PTF uses silk-screen to print the silver and carbon combination conductive inks on PET substitute to reach lower cost purpose as compare with FPC (Flexible Printing Circuit). Unfortunately, the screen-printing still has some ability limits. Especially that it has … Continue reading

Apr20
What is PTF(Polymer Tick Film)? PTF introduction

Polymer Thick Film (PTF) flexible circuits are manufactured by screen-printing conductive ink onto flexible substrates such as PET (Polyethylene terephthalate). It can be single layer or multi-layers circuit by further screen-printing dielectric materials as insulating layer and applying through-hole technologies. … Continue reading

Apr20
What potentioal cuase make HeatSeal Connector peel off?

Recently there were many missed segment defect of the HSC (Heat Seal Connector) solution LCM returned from the field. As experience tell the reliability of HSC bonding  is not so good for the industrial product. Because this cable is easily … Continue reading

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