What is the structure of the amorphous selenium flat panel detector?

The structure of the direct amorphous selenium flat panel detector is mainly composed of amorphous selenium and thin film semiconductor matrix, and also includes a dielectric layer, a top electrode, a protective layer and other structures. The structure content of the thin film semiconductor matrix of the amorphous selenium flat panel detector includes thin film transistors arranged in array elements, and then the semiconductor material is passed on the thin film transistors in the form of thin films by vacuum evaporation.

The information collection process of the amorphous selenium flat panel detector: the high-voltage power supply is connected to the top electrode. When X-rays are incident, in order to prevent the occurrence of lateral deviation and light scattering rays, the high-voltage power supply forms an electric field on the surface of the amorphous silicon to make the incident The X-ray can only pass through the insulating layer, X-ray semiconductor, and electron confinement layer in the direction of the electric field to reach the amorphous silicon. The amorphous silicon of the flat panel detector can directly convert the incoming X-rays into electrical signals, and store the converted electrical signal information in the form of charge in the storage capacitor, and then turn on the thin film transistor through the pulse control gate circuit. The charge stored in the storage capacitor is transferred to the charge amplifier for output, the photoelectric conversion of the electrical signal to the optical signal is completed, and then the digital signal is converted into the digital signal by the digital converter to complete the conversion of digital information, and the formed digital information is entered Computer image processing system. Our company specializes in the production of image intensifier TV systems. The products include image intensifiers, CCD cameras, image processors, monitors. The products are exported to Europe, America, Africa, and the Middle East, and are well received by customers from various countries. Vertical, mobile chest frame, various types of x-ray machine parts, if you have similar items, please contact us via email.

Author：肖恩