Winstek Semiconductor 

Winstek Semiconductor Co., Ltd., along with its various subsidiaries, offers extensive services in Taiwan, specializing in integrated circuit (IC) testing, wafer bumping, and wafer packaging. Their comprehensive test division provides initial wafer sorting, thorough final and post-production testing, dedicated engineering assistance, and access to advanced test platforms. For wafer bumping, the company delivers a diverse range of solutions, including copper pillar bumps, wafer-level chip scale packaging (WLCSP), lead-free options, plating bump/ball drop/RDL, 6S protection, heterogeneous bumps, and backside metallization. Furthermore, Winstek provides crucial backend services such as die processing, wafer thinning, singulation, and flip-chip integration. They also conduct detailed verification and analysis, which includes failure analysis and reliability assessments. Established in 2000, the company was initially known as Stats ChipPac Taiwan Semiconductor Corp. before officially rebranding to Winstek Semiconductor Co., Ltd. in June 2015. Its main operations are based in Hsinchu City, Taiwan, and it operates as an affiliate of SIGWIN Corporation.