公开(公告)号：US20140055437A1

公开(公告)日：2014-02-27

申请号：US13738496

申请日：2013-01-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young-Il BAN ,  SUNKYU SON ,  Kyungha KIM

IPC: H03M1/66 ,  G09G5/00

CPC classification number: H03M1/66 ,  G09G3/2007 ,  G09G5/001 ,  G09G2310/027 ,  G09G2320/0673 ,  G09G2330/028 ,  H03M1/662 ,  H03M1/76

Abstract: A display apparatus includes pixels, gate lines and data lines, a gate driver driving the gate lines, a data driver which drives the data lines, and a timing controller which controls the gate and data drivers and provides digital image signals to the data driver. The data driver includes a digital-to-analog converter which receives first and second gamma voltages and converting the digital image signals to analog image signals and an output buffer which outputs the analog image signals to the data lines. The digital-to-analog converter includes a resistor string which receives the first and second gamma voltages and generates gamma voltages, a look-up table which stores selection signals, a first decoder which selects the gamma voltages and outputs the selected gamma voltages as gamma reference voltages, and a second decoder which converts the digital image signals to the analog image signals based on the gamma reference voltages.

Abstract translation: 显示装置包括像素，栅极线和数据线，驱动栅极线的栅极驱动器，驱动数据线的数据驱动器，以及控制栅极和数据驱动器并向数据驱动器提供数字图像信号的定时控制器。 数据驱动器包括数模转换器，其接收第一和第二伽马电压并将数字图像信号转换为模拟图像信号，以及将模拟图像信号输出到数据线的输出缓冲器。 数模转换器包括接收第一和第二伽马电压并产生伽马电压的电阻串，存储选择信号的查找表，选择伽马电压并将所选伽马电压输出为伽马的第一解码器 参考电压，以及第二解码器，其基于伽马参考电压将数字图像信号转换为模拟图像信号。