电子器件2008，Vol.31Issue(1)：260-264,5.
应用于可携式产品液晶显示器之低静态电流与晶片面积的源极驱动电路架构
One Quiescent Current and Chip Area Efficient Architecture of TFT-LCD Source Driver for Portable Applications
摘要
Abstract
One architecture of 262 K-colors TFT-LCD source driver efficient in chip dimension and static current,which is suitable for QCIF+ (176RGB×240) resolutions, is proposed. And it can be used in the mobile phone or the high-end portable in practicle. The conventional three type source drivers demand larger numbers of OPAMP buffers to drive the panel's pixels, and involve higher resistance value of R-DAC to generate gamma voltages for keeping the lowest static current. In this fourth type source driver, it only uses two OPAMPs and the lower resist-ance value of R-DAC without increasing the quiescent current. Thus, the source driver can save more area to in-crease the chip competitive advantages and reduce static power dissipation for extending the battery lifetime. The proposed prototype chip of the OPAMP and the 262K-colors TFT-LCD source driver were implemented by 3.3V 0. 35μn CMOS fabrication technology. The circuit core size of the OPAMP is about 100 μm ×50 tan and the source driver is around 400 μm × 650 μm. The reduced chip area is approximately 54. 25 % and the wasted static current is around 2. 6 % by this forth architecture.关键词
架构/QCW+解析度/源极驱动电路/薄膜电晶体液晶显示器Key words
architecture/ QCIF+ Resolution/ Source Driver/ TFT-LCD分类
信息技术与安全科学引用本文复制引用
江伟山,刘汉文,黄男雄,曹铭原,张振豪,刘堂傑..应用于可携式产品液晶显示器之低静态电流与晶片面积的源极驱动电路架构[J].电子器件,2008,31(1):260-264,5.基金项目
The authors would like to thank Taiwan National Chip Implementation Center(CIC)for chip fabrication.And the research was supported in part by the Taiwn National Science Council under Contract No.NSC-94-2218-E-005-010. （CIC）
