公开(公告)号：US09275595B2

公开(公告)日：2016-03-01

申请号：US14185445

申请日：2014-02-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jin-Han Kim ,  Jae-Wook Kwon ,  Seong-Jong Yoo ,  Ha-Jun Lee

IPC: G09G3/26 ,  G09G3/36 ,  H03K5/04 ,  H03K19/003

CPC classification number: G09G3/3685 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0291 ,  H03K5/04 ,  H03K19/00361

Abstract: A source driving circuit includes an output buffer circuit to compensate for slew rate of signals used to drive a display device. The output buffer circuit includes a bias current control signal generating circuit and a channel amplifying circuit. The bias current control signal generating circuit performs an exclusive OR operation on an input signal and an output signal of a reference operational amplifier to generate a bias current control signal. The channel amplifying circuit adjusts the slew rate of a plurality of output voltage signals in response to the bias current control signal. The output signals are then used to control the display device.

Abstract translation: 源极驱动电路包括用于补偿用于驱动显示器件的信号的转换速率的输出缓冲器电路。 输出缓冲电路包括偏置电流控制信号发生电路和信道放大电路。 偏置电流控制信号发生电路对参考运算放大器的输入信号和输出信号执行异或运算，以产生偏置电流控制信号。 通道放大电路根据偏置电流控制信号调整多个输出电压信号的转换速率。 然后输出信号用于控制显示设备。