257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
79 | DF | INCOHERENT LIGHT EMITTER STRUCTURE {10} |
88 | DF | .~ Plural light emitting devices (e.g., matrix, 7-segment array) {4} |
89 | .~.~ Multi-color emission {1} | |
90 | DF | .~.~.~> With heterojunction |