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该论文提出了一种用于移动有源矩阵液晶显示器的10位列驱动器，采用可变电流控制插值技术，解决了传统电阻串DAC面积大、电容DAC转换时间长和嵌入式DAC晶体管数量多的问题。
resistor-string DAC (RDAC) needs to be increased, which results in a large area overhead [1]. To avoid this issue, several DAC architectures such as a CDAC [2] and an embedded DAC [3] have been reported. However, CDACs suffer from inaccurate operation and long D/A conversion time due to switching capacitors. An embedded DAC requires a large number of input transistors (=2N+1 for N-bit interpolation) in its amplifier. Moreover, the transistors require large width and length for accurate matching, leading to an area penalty in the amplifier for high bit interpolation (e.g. N≥3). In this paper, an area-efficient and accurate interpolation method that uses variable-current control (VCC) for 10b mobile AMLCD column drivers is presented.
Hyung-Min Lee1, Yong-Joon Jeon1, Sung-Woo Lee1, Gyu-Hyeong Cho1,
Hyoung-Rae Kim2, Yoon-Kyung Choi2, Myunghee Lee2 KAIST, Daejeon, Korea Samsung Electronics, Yongin, Korea 1 2 For high image quality in mobile AMLCDs, the bit depth in a conventional