发明申请
- 专利标题: RADIATION DETECTION APPARATUS AND RADIOGRAPHIC IMAGING SYSTEM
- 专利标题(中): 辐射检测装置和放射成像系统
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申请号: US12493776申请日: 2009-06-29
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公开(公告)号: US20100001194A1公开(公告)日: 2010-01-07
- 发明人: Takamasa Ishii , Chiori Mochizuki , Minoru Watanabe
- 申请人: Takamasa Ishii , Chiori Mochizuki , Minoru Watanabe
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 优先权: JP2008-172622 20080701; JP2009-136710 20090605
- 主分类号: G01T1/24
- IPC分类号: G01T1/24
摘要:
A radiation detection apparatus comprises a plurality of pixels each including a conversion element which converts incident radiation into a charge, a switching element which transfers the charge, and an interlayer insulation film disposed between the conversion element and the switching element, a gate line to drive the switching element, and a signal line located to intersect with the gate line and configured to read out the charge transferred from the switching element, wherein Ca≧ε0×ε×S/d and 7d≦P/2 is satisfied, where P is a pixel pitch, Ca is a sum total of coupling capacitances between the signal line and the gate line, S is an overlapping area of the signal line and the conversion element, d is a thickness of the interlayer insulation film, ε is a relative dielectric constant of the interlayer insulation film, and ε0 is a vacuum dielectric constant.