随着手持移动设备使用的增加,液晶显示器驱动芯片的功耗问题越来越受到人们的关注,如何减少芯片功耗已经成为设计的重点.设计一款适用于小尺寸液晶显示器的驱动芯片,采用rail-to-rail缓冲放大器和电荷共享技术的列驱动缓冲输出电路.设计中采用rail-to-rail缓冲放大器适应驱动电路的电压极性特点,可以很好地减少静态功耗;并且充分利用了点反转驱动方法相邻行和列电压极性均不相同的特点,采用了一种新的电荷共享技术,使其相邻的行和列相互充电,使动态功耗在理论上减少到原来的25％.
参考文献
| [1] | 徐杰,杨虹,敦树旭,等.TFT液晶显示屏驱动方法的研究[J].液晶与显示,2004,19(1):42-47. |
| [2] | 李维(諟),郭强.液晶显示应用技术[M].北京:电子工业出版社,2000:6. |
| [3] | Ker Ming-Dou,Deng Chih-Kang,Huang Ju-Lin.On-panel output buffer with offset compensation technique for data driver in LTPS technology[J].J.Display Technology,2000(2):153-159. |
| [4] | Yu Pangcheng,Wu Jinchuan.Novel low power class-B output buffer[J].Circuits and Systems,1998,(6):633-636. |
| [5] | Yoon Kwangho.A hybrid-level multi-phase charge-recycler with reduced number of external capacitors for lowpower LCD column drivers[C]//ASICs,2000.AP-ASIC 2000.Proceedings of the Second IEEE Asia Pacific Conference Korea:IEEE,2000:127-130. |
| [6] | Kim Jong-Seok,Jeong Deog-Kyoon,Gyudong Kim.A multi-technique without external capacitor for low-power TFT-LCD column drivers[J].IEEE J.Solid-State Circuits,2000,(5):365-368. |
| [7] | Kim Jong-Seok,Jeong Deog-Kyoon,Kim Gyudong.A multi-level multi-phase charge-recycling method for lowpower AMLCD column drivers[J].Solid-State Circuits,IEEE,2000,(35):74-84. |
| [8] | Sung Yoo-Chang,Choi Byong-Deok,Kwon Oh-Kyong.Low-power TFT-LCD source driver using triple charge sharing method[C]//IEEE VLSI and CAD Conference,Seoul,South Korea:IEEE,1999:317-320. |
| [9] | Lu Chih-Wen,Hsu Kuo Jen.A high-speed low-power rail-to-rail column driver for AMLCD application[J].IEEE J.Solid-State Circuits,2004,(39):1313-1320. |
| [10] | Yang Shao-sheng,Guo Pao-lin,Chang Tsin-yuan,et al.A multi-phase charge-sharing technique without external capacitor for low-power TFT-LCD column drivers[J].Circuits and Systems,2003,(5):365-368. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%