Shimadzu Corporation

Other

Nippon Hoso' Kyokai

Hidetoshi Kishimoto

Kenji Sato

Junichi Suzuki

Toshinori Yoshimuta

Hiromichi Tonami

Satoshi Tokuda

Shiro Oikawa

Toshiyuki Sato

Kenkichi Tanioka

Shinya Hirasawa

Koji Watadani

Takayuki Takemoto

Yutaro Kimura

Shirou Suzuki

Yoichiro Shimura

Toshio Yamagishi

Kazuhiko Shima

Nobuya Nagafune

Naoyuki Hori

Tutomu Katou

Masahito Sato

Takahisa Nishikawa

Keiichi Hiragaki

Tatsuya Shimizu

Naoki Uchida

A radiation detector of this invention has an electrically insulating buffer seat disposed on a front surface of a radiation sensitive semiconductor, in a position outside a radiation detection effective area. A common electrode for bias voltage application is formed to cover the buffer seat. A lead wire for bias voltage supply is connected to a lead wire connection area, located on the buffer seat, of the surface of the common electrode. The buffer seat reduces a shock occurring when the lead wire is connected to the common electrode. As a result, the semiconductor and an intermediate layer are protected from damage which would lead to a lowering of performance. The buffer seat is disposed outside the radiation detection effective area. Thus, the buffer seat is provided without impairing the radiation detecting function.

Radiation detector having radiation sensitive semiconductor

X-ray detection plate and X-ray detector

A two-dimensional array type detecting device of the invention is formed of a detecting side substrate, and a readout side substrate laminated together. In the detecting side substrate, a high resistivity responsive semiconductor film is laminated on a substrate through a common electrode therebetween, and semiconductor films for connection are formed for the respective sections corresponding to a two-dimensional array arrangement. Therefore, leak and expansion of carriers produced in the high resistivity responsive semiconductor are prevented in a direct conversion system, wherein light or radiation enters from a side of the glass substrate, in which the common electrode is not formed. Thus, a detecting sensitivity and space resolution can be improved. Namely, a dynamic range is large, and a crosstalk is small.

Two-dimensional array type detecting device having a common and individual electrodes

An X-ray image pickup tube converts a transmitted X-ray image into electric signals. The pickup tube includes a target structure having a fluorescent element, and a translucent conductive film for receiving a high voltage, with a photoconductive film laminated thereupon. The fluorescent element receives transmitted X rays in a two-dimensional distribution, and converts them into visible rays in a two-dimensional distribution. The translucnet conductive film is optically coupled to a surface of the fluorescent element opposite from an X-ray incident surface thereof. The photoconductive film includes an amorphors semiconductor layer which converts the visible rays transmitted in a two-dimensional distribution through the translucent conductive film, into electric charges in a two-dimensional distribution, and which multiplies the electric charges in the two-dimensional distribution based on electric fields formed by the high voltage applied to the translucent conductive film. The pickup tube also has a signal reading device in the form of an electron gun or switching elements for scanning a surface of the photoconductive film, as electric signals, a two-dimensional electric potential distribution occurring on the photoconductive film.

X-ray image pickup tube

Growing community of inventors

Izumi, Japan

Hidetoshi Kishimoto