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    • 4. 发明授权
    • Radiographic imaging device, radiographic imaging system, computer readable medium storing disconnection detection program, and disconnection detection method
    • 射线照相成像装置,放射线照相成像系统,存储断线检测程序的计算机可读介质和断线检测方法
    • US09250335B2
    • 2016-02-02
    • US13484281
    • 2012-05-31
    • Yoshihiro Okada
    • Yoshihiro Okada
    • G01T1/29
    • G01T1/2928G01T1/2914G01T1/2921
    • The present invention provides a radiographic imaging device, a radiographic imaging system, a computer readable medium storing disconnection detection program and a disconnection detection method that may detect disconnected specific signal lines even when the charge amount output from a single pixel is small. Namely, a bias voltage is applied to pixels, and offset charges due to leak current of sensor portions (photodiodes) are accumulated. The gates of pixel TFT switches are switched ON in sequence, and electric signals are output corresponding to the accumulated offset charges. A control section detects a cumulative value of the offset charge amount based on the electric signals. The detected cumulative value is then compared to a predetermined disconnection detection threshold value and disconnected signal lines are detected when the cumulative value is less than the threshold value.
    • 本发明提供了即使当从单个像素输出的电荷量较小时,也可以检测断开的特定信号线的放射线照相成像装置,放射线照相成像系统,存储断开检测程序的计算机可读介质和断开检测方法。 也就是说,偏置电压被施加到像素,并且由于传感器部分(光电二极管)的泄漏电流而产生的偏移电荷被累积。 像素TFT开关的栅极依次导通,并且对应于累积的偏移电荷输出电信号。 控制部根据电信号检测偏移电荷量的累积值。 然后将检测到的累积值与预定的断开检测阈值进行比较,并且当累积值小于阈值时检测到断开的信号线。
    • 5. 发明授权
    • Radiation detector
    • 辐射检测器
    • US08981304B2
    • 2015-03-17
    • US12974707
    • 2010-12-21
    • Yoshihiro Okada
    • Yoshihiro Okada
    • G01T1/00G01T1/24G01T1/20
    • G01T1/243G01T1/2018
    • The present invention provides a radiation detector including: a wavelength conversion unit that converts irradiated radiation to a radiation with a second wavelength; a first substrate that has a first and a second surface; radiation detecting pixels, disposed in a matrix on the first surface, that accumulate charges generated by irradiation of the radiation with the second wavelength, and that include switching elements to read out the charges; scan lines, provided on the first surface, through which a control signal, that switches each switching element provided in each radiation detecting pixel, flows; signal lines, provided on the first surface, through which an electric signal flows, the electric signal corresponding to the charges accumulated in each radiation detecting pixel; and a second substrate, provided on the second surface, that includes radiation irradiation detecting sensors that generate charges due to irradiation of the radiation having the second wavelength.
    • 本发明提供一种辐射检测器,包括:波长转换单元,其将照射的辐射转换成具有第二波长的辐射; 具有第一表面和第二表面的第一基底; 放射线检测像素,设置在第一表面上的矩阵中,其累积由具有第二波长的辐射照射产生的电荷,并且包括开关元件以读出电荷; 设置在第一表面上的扫描线,通过该扫描线切换设置在每个辐射检测像素中的每个开关元件的控制信号; 信号线,设置在电信号流过的第一表面上,对应于每个辐射检测像素中累积的电荷的电信号; 以及设置在第二表面上的第二基板,其包括由于具有第二波长的辐射的照射而产生电荷的辐射照射检测传感器。