| 257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
| 213 | DF | FIELD EFFECT DEVICE {6} |
| 288 | DF | .~ Having insulated electrode (e.g., MOSFET, MOS diode) {17} |
| 290 | DF | .~.~ Light responsive or combined with light responsive device {1} |
| 291 | | .~.~.~ Imaging array {3} |
| 292 | DF | .~.~.~.~> Photodiodes accessed by FETs |
| 293 | DF | .~.~.~.~> Photoresistors accessed by FETs, or photodetectors separate from FET chip |
| 294 | DF | .~.~.~.~> With shield, filter, or lens |