Industrial Technology Research Institute

Sheng-Lung Wu

Yu-Lung Lo

Chih-Min Lin

Jau-Liang Chen

Fuh-Chyun Tang

Jiann-Chyun Kang

Tien-Lou Ho

A method of linkage with springs mold is provided to simulate the condition of forces acting on a bonding wire for semiconductor package. The bonding wire profile can be formed by means of combining several sets of linkage with springs, wherein the coefficients of elasticity and plasticity of the springs are determined by the bending angle of two linkages which simulates the elastic-plastic deformation of the wires. The operational model can be simplified and the time can be saved by using the multiple degrees of freedom of the links/springs to analyze the profile and forces on the fine wire. Necking and fracture during formation process of the bonding wire can be avoided by the present method and design to achieve the optimum design for wire bonding profiles.

Profile design for wire bonding

This invention relates to a C type lamp string improvement, comprising a lamp holder, a first contact piece, a second contact piece and a cord, wherein said lamp holder is such designed as to be integrally molded together. Said first contact piece and second contact piece may contact each pole of the bulb respectively, and one end of each has a sharp point for piercing the covering of the cord while contacting the core of the cord to achieve good conductivity, and said second contact piece has a proper number of projecting points at intervals equivalent to the pitches of the bulb thread to substitute for the conventional lamp holder thread. For manufacture, the first step is to insert the first and second contact pieces into the mold for making said lamp holder, and then place said cord within said injecting mold to enable said first and second contact pieces to pierce the covering of said cord with the sharp point, and wait until the integration of the injecting mold then the lamp holder will be integrally molded while cord and first and second contact pieces are integrated within the lamp holder.

C type lamp string improvement

Growing community of inventors

Taoyuan Hsien, Taiwan

Sheng-Lung Wu