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针对AMOLED移动显示驱动器中电流驱动方案的需求，提出了一款面积为0.014mm²的9位开关电流DAC。该DAC采用紧凑的开关电流架构，实现了高精度低功耗的电流输出，有效应对TFT器件非均匀性和像素IR压降问题。
amount of attention as a very desirable display due to superior characteristics such as its wide viewing angle, fast response, thinness, and low power consumption. Among various driving techniques for AMOLED displays, the currentdriving scheme deals well with the issues of spatial and temporal variation of the TFT as well as IR drops in the pixel circuits [1]. Several previous works have successfully demonstrated this [2-3]. Figure 17.9.1 shows a block diagram of an AMOLED display system adopting a current-driving scheme. The digital-to-analog converter (DAC) plays a key role in the column driver by reconstructing the analog signal for pixel-driving from digital data. Considering that the number of columns of pixels continues to increase, even in mobile-oriented displays, the
Hyun-Sik Kim, Jin-Yong Jeon, Sung-Woo Lee, Jun-Hyeok Yang,
Seung-Tak Ryu, Gyu-Hyeong Cho KAIST, Daejeon, Korea Active-Matrix Organic LED (AMOLED) technology has attracted a considerable