公开(公告)号：KR100727900B1

公开(公告)日：2007-06-13

申请号：KR1020050130320

申请日：2005-12-27

Applicant: 한국전기연구원

Inventor： 허영 ,  진승오 ,  전성채 ,  김영희 ,  임규호 ,  강형근 ,  박종덕

IPC: H04N5/32 ,  H04N5/3745

Abstract: A threshold voltage generator for a single photon counting type digital X-ray image sensor is provided to set a threshold voltage generator in a pixel for a CMOS(Complementary Metal Oxide Semiconductor) readout chip to omit an operation of confirming a common voltage of a pre-amplifier and reduce channel length modulation effect. A threshold voltage generator for a single photon counting type digital X-ray image sensor includes a bias voltage generating unit(40) and a threshold voltage generating unit(50). The bias voltage generating unit receives a power supply voltage, generates a reference voltage, and generates a bias voltage according to the reference voltage. The threshold voltage generating unit generates a threshold voltage by using a resistor and a current source connected to an output terminal of the bias voltage generating unit.

Abstract translation: 提供了用于单光子计数型数字X射线图像传感器的阈值电压发生器，以在用于CMOS（互补金属氧化物半导体）读出芯片的像素中设置阈值电压发生器，以省略确认预共振电压的操作 放大器并减小信道长度调制效应。 用于单光子计数型数字X射线图像传感器的阈值电压生成器包括偏置电压生成单元（40）和阈值电压生成单元（50）。 偏置电压产生单元接收电源电压，产生参考电压，并根据参考电压产生偏置电压。 阈值电压生成单元通过使用连接到偏置电压生成单元的输出端的电阻器和电流源来生成阈值电压。