Publication
CMOS X-ray Image Sensor Array
| Summary: | This paper describes a pixel array for x-rays imaging consisting in an 8x8 photodiode array fabricated in CMOS technology, with the respective readout circuit. Above the photodiodes, an array of scintillating CsI:Tl crystals are placed. So, the x-ray energy is first converted to visible light by the scintillating crystals, which is then detected by the photodiodes. The photocurrent produced by each photodiode is amplified, converted to a voltage and stored in a capacitor. Finally, the voltage of each capacitor is read by the readout circuit. |
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| Main Authors: | Silva, J. |
| Other Authors: | Lanceros-Méndez, S.; Minas, Graça; Rocha, J. G. |
| Subject: | Photodiode array Image sensor X-ray |
| Year: | 2007 |
| Country: | Portugal |
| Document type: | conference paper |
| Access type: | restricted access |
| Associated institution: | Universidade do Minho |
| Language: | English |
| Origin: | RepositóriUM - Universidade do Minho |
| Summary: | This paper describes a pixel array for x-rays imaging consisting in an 8x8 photodiode array fabricated in CMOS technology, with the respective readout circuit. Above the photodiodes, an array of scintillating CsI:Tl crystals are placed. So, the x-ray energy is first converted to visible light by the scintillating crystals, which is then detected by the photodiodes. The photocurrent produced by each photodiode is amplified, converted to a voltage and stored in a capacitor. Finally, the voltage of each capacitor is read by the readout circuit. |
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