Circuit World: Volume 42 Issue 2

Calculation of flexible printed circuit boards (FPC) global and local defect detection based on computer vision

Liya Wang, Yang Zhao, Yaoming Zhou, Jingbin Hao

The purpose of this paper is to present a detection method based on computer vision for automatic flexible printed circuit (FPC) defect detection.

Micro drilling quality of the Cu/BT laminate for IC substrate

Shan Li, Li Juan Zheng, Cheng Yong Wang, Bing Miao Liao, Lianyu Fu

In an integrated circuit (IC) substrate, more fillers, including talcum powder and aluminium hydroxide, are added, which leads to much higher rigidity and hardness compared with a…

The influencing mechanism of drilling parameters on micro drilling temperature on the basis of calibration of surface emissivity of micro drill bit

Hongyan Shi, Jiali Ning, Qiuxin Yan

The purpose of this paper is to calibrate the surface emissivity of micro drill bit and to investigate the effect of different drilling parameters on the temperature of micro…

Multi-physics coupling aid uniformity improvement in pattern plating

Linxian Ji, Chong Wang, Shouxu Wang, Kai Zhu, Wei He, Dingjun Xiao

The uniformity of electrodeposition is the key to successful application of pattern plating because the quality of electrodeposited copper layer has a huge impact on the…

Effects of organic medium on rheological properties of silver pastes for crystalline silicon solar cells

Jun Qin, Shuxin Bai, Weijun Zhang, Zhuofeng Liu, Hailiang Wang

The purpose of this paper is to characterize and understand the effects of polymer binder, thixotropic agent, solvent and organic medium content on the rheological properties of…

Passive device embedded substrate for application of RF module

Hyunho Kim

The purpose of this study is to form fabrication and electrical characteristics of passive device embedded substrate that is embedded chip bead inductor and chip capacitor inside…

Parametric optimization of metal conductors in flexible electronics design

Xiaoling Wang, Yingrui Hou, Guoqing Wang, Mudong Hao, Hao Li

The purpose of this paper is to illustrate the dependence of flexible-electronics properties on the metal conductor parameters, such as the width, thickness, connection length and…