公开(公告)号：US20140253423A1

公开(公告)日：2014-09-11

申请号：US14201591

申请日：2014-03-07

申请人： Renesas SP Drivers Inc.

发明人： Takao Kinsho

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3696 ,  G09G2310/0291

摘要： A display panel driver includes: a grayscale amplifier receiving an input grayscale reference voltage and generating an output grayscale reference voltage corresponding to the input grayscale reference voltage; a voltage dividing resistor receiving the output grayscale reference voltage and generating a plurality of grayscale voltages by using the received output grayscale reference voltage; a decoder circuit selecting grayscale voltages from among the plurality of grayscale voltages in response to image data and outputting the selected grayscale voltages; and an output circuit outputting drive voltages corresponding to the selected grayscale voltages to output terminals to be connected to source lines of a display panel. The grayscale amplifier is configured such that the output grayscale reference voltage is adjustable by adjusting an offset voltage of the grayscale amplifier.

摘要翻译： 显示面板驱动器包括：灰阶放大器，其接收输入灰度参考电压并产生对应于输入灰度参考电压的输出灰度参考电压; 接收输出灰度参考电压并通过使用所接收的输出灰度参考电压产生多个灰度电压的分压电阻; 解码器电路响应于图像数据从多个灰度级电压中选择灰度电压并输出所选择的灰度电压; 以及输出电路，将对应于所选择的灰度电压的驱动电压输出到要连接到显示面板的源极线的输出端子。 灰度放大器被配置为使得输出灰度参考电压可通过调整灰度放大器的偏移电压来调节。