Andy Chang Email & Phone Number

Singapore

Singapore

JSR is a world leader in material innovation. It sells wide ranges of fine chemicals include semiconductor material. JSR is market leader in lithographic material. In the JSR Singapore branch, I support OEM and foundries semiconductor customers on daily basis from technical issues to sales and logistic support.

Sunnyvale, Ca

- Key technical customer account owner on photoresist material and to support IC customers globally; direct contact with customers for HVM support on product quality, process changes, and continuous improvements projects. Generate external technical presentations to customers with sensitive -Work in multiple task force teams to resolve manufacturing and customer complaints to investigate in root cause from raw materials and manufacturing by understand problem statement to plan DOE, collect data, analyse, and finally, implementing corrective action with 8D report to customers.- Experience in filter qualification by working with filter vendors for fine chemical application on organic and aqueous solvent base chemicals on Nylon and high Mw polyethylene membranes. - Basic understanding of Wet cleans chemical development and the application focus for BEOL technology. - Knowledgeable in photoresist chemistry from polymer, PAG, quencher, and solvents to understanding analytical technical to characterize and aid in troubleshooting issues.

Sunnyvale, Ca

-Managed product development from small scale to HVM to meet technical requirements. -Led cross-functional project to improve process capability in manufacturing facility. -Performed SPC analysis to identify trends in the finished product inspection, in-process material, and bulk raw materials to aid in troubleshooting by performing DOE studies, and recommend corrective actions.-Formulated and tested incoming raw material for photoresist chemicals by operating lithographic equipment, mainly 248/193nm Scanner and Stepper and measure with top-down CD-SEM.

Davis, Ca

- Validated chemical etching process for SrTiO­3 substrate using AFM for surface topography studies- Grew thin films using Pulsed Laser Deposition and use Leptos thin film analysis software for x-ray diffraction and reflectivity data- Mentored new research undergraduates developing critical and analytical skills for material science research- Worked individually on projects under guidance of professor while interacting with other researchers at weekly meetings to discuss thin film analysis and characterization techniques

Taoyuan, Taiwan