use TFT-based active matrix displays. Brody and Fang-Chen Luo demonstrated the first flat active-matrix thin-film transistor liquid-crystal display (AM TFT LCD) in 1974, and then Brody coined the term "active matrix" in 1975.

In 1972 North American Rockwell Microelectronics Corp introduced the use of DSM LCDs for calculators for marketing by Lloyd's Electronics, Inc.,