sentences:  The basis for modern image sensors is metal-oxide-semiconductor (MOS) technology, which originates from the invention of the MOSFET (MOS field-effect transistor) by Mohamed M. Atalla and Dawon Kahng at Bell Labs in 1959.This led to the development of digital semiconductor image sensors, including the charge-coupled device (CCD) and later the CMOS sensor.The charge-coupled device was invented by Willard S. Boyle and George E. Smith at Bell Labs in 1969.