公开(公告)号：US20160054368A1

公开(公告)日：2016-02-25

申请号：US14546605

申请日：2014-11-18

Applicant: AU OPTRONICS CORP.

Inventor： Jin-Jang YANG ,  Ching-Hung WANG ,  Huang-Ti LIN

IPC: G01R31/02 ,  H03K3/356 ,  H03K19/0185

CPC classification number: G01R31/025 ,  G01R19/16576 ,  H03K19/00315 ,  H03K19/018521

Abstract: A level shift circuit includes a level shift module and a voltage comparing module. The level shift module includes a plurality of stages of level shift units, each including a front-end circuit and an inverter circuit. The inverter circuit is electrically coupled to the front-end circuit and receives and inverts an output signal of the front-end circuit. The front-end circuit receives a clock signal, converts high/low voltage level of the clock signal into first/second voltage level, respectively, and outputs a respective signal with the first/second voltage level. The voltage comparing module is coupled to the level shift module and receives output signals of the inverter circuit of the first level shift unit and of the front-end circuit in the second level shift unit and compares the two output signals. The voltage comparing module outputs a short-circuit protection trigger signal when the two output signals have different voltages.

Abstract translation: 电平移位电路包括电平移位模块和电压比较模块。 电平移位模块包括多级电平移位单元，每级包括前端电路和反相器电路。 逆变器电路电耦合到前端电路，并接收和反相前端电路的输出信号。 前端电路接收时钟信号，分别将时钟信号的高/低电压电平转换为第一/第二电压电平，并输出具有第一/第二电压电平的相应信号。 电压比较模块耦合到电平移位模块，并且接收第二电平移位单元中的第一电平移位单元和前端电路的逆变器电路的输出信号并比较两个输出信号。 当两个输出信号具有不同的电压时，电压比较模块输出短路保护触发信号。