The difference between thick and thin film integrated circuits?
Thin film integrated circuits are the transistors, diodes, resistors, capacitors, and inductors of the entire circuit and the interconnecting leads between them, all using metals, semiconductors, metal oxides, and multiple metal mixed phases with a thickness of less than 1 micron. Alloy or insulating dielectric film, and integrated circuits made by vacuum evaporation, sputtering and electroplating. The active devices in thin film integrated circuits, namely transistors, have two material structure forms:
One is a thin-film field-effect cadmium sulfide or cadmium selenide transistor, and the other is a thin-film thermal electronic amplifier. More practical thin-film integrated circuits use hybrid technology, that is, thin-film technology is used to prepare passive components and connections between circuit components on glass, glass-ceramics, glaze and polished alumina ceramic substrates, and then integrate integrated circuits, Chips of active devices such as transistors and diodes, as well as power resistors, large-capacity capacitors, inductors and other components that do not use thin-film technology can be assembled by thermocompression welding, ultrasonic welding, beam lead or bump flip-chip welding, etc. Into a complete integrated circuit.
Thick film integrated circuits are integrated circuits formed on insulating objects such as ceramic sheets or glass, plus crystal diodes, transistors, resistors, or semiconductor integrated circuits. They are generally used in the switching power supply circuits of TV sets or the power of audio systems. In the amplifier circuit. The sound circuit and final video amplifier circuit of some color TV sets also use thick film integrated circuits.
1. Power Thick Film Integrated Circuits The thick film integrated circuits used in switching power supply circuits are mainly used for pulse width control, voltage stabilization control, and switching oscillation.
2. Audio power amplifier thick film integrated circuit The main function of the audio power amplifier integrated circuit is to amplify the power of the input audio signal and promote the speaker to produce sound.
