ChipMOS TECHNOLOGIES Inc is engaged in the research, development, manufacturing, and sale of high-integration and high-precision integrated circuits and related assembly and testing services. The company's segments include Testing, Assembly, Testing, and Assembly for LCD, OLED, and other Display Panel Driver Semiconductors (LCDD), Bumping, and others. It derives a majority of its revenue from Taiwan followed by Japan, the People's Republic of China, Singapore, and others.