Design of LCD Driver Chip with 1024-Level Gray Scale and Large Capacitor Load

YIN Dong-hui; REN Yan-nan; YUE Chao; LI Fu-le; CHI Bao-yong; CHEN Zhi-liang

doi:10.3788/YJYXS20112601.0078

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Design of LCD Driver Chip with 1024-Level Gray Scale and Large Capacitor Load

Driving & Controlling | 更新时间：2020-08-12

- Design of LCD Driver Chip with 1024-Level Gray Scale and Large Capacitor Load
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 1, Pages: 78-82(2011)
- 作者机构：
  
  清华大学微电子学研究所北京,100084
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20112601.0078
  CLC： TN27;TN702.2
- Received：12 April 2010，
  
  Revised：11 May 2010，
  
  Published Online：20 February 2011，
  
  Published：20 February 2011
- 稿件说明：
移动端阅览
尹东辉, 任彦楠, 岳超, 李福乐, 池保勇, 陈志良. 一种1024级灰度大电容负载的LCD驱动芯片设计[J]. 液晶与显示, 2011,26(1): 78-82

YIN Dong-hui, REN Yan-nan, YUE Chao, LI Fu-le, CHI Bao-yong, CHEN Zhi-liang. Design of LCD Driver Chip with 1024-Level Gray Scale and Large Capacitor Load[J]. , 2011,26(1): 78-82
尹东辉, 任彦楠, 岳超, 李福乐, 池保勇, 陈志良. 一种1024级灰度大电容负载的LCD驱动芯片设计[J]. 液晶与显示, 2011,26(1): 78-82 DOI： 10.3788/YJYXS20112601.0078.

YIN Dong-hui, REN Yan-nan, YUE Chao, LI Fu-le, CHI Bao-yong, CHEN Zhi-liang. Design of LCD Driver Chip with 1024-Level Gray Scale and Large Capacitor Load[J]. , 2011,26(1): 78-82 DOI： 10.3788/YJYXS20112601.0078.

摘要

设计了一种基于动态扫描原理的液晶显示(LCD)驱动芯片。该芯片为高压CMOS数模混合集成电路并支持输出频率可选功能。芯片输入数据频率为13.5 MHz

输出1 024级256列模拟电压信号直接驱动LCD

输出电压幅度可达12 V以上。负载为200 pF时

最大摆幅上升/下降时间小于5 s。芯片采用新加坡特许半导体(Chartered) 0.35 m、18 V高压工艺设计

并进行了仔细的版图设计以减小匹配误差

仿真结果显示电路性能完全满足设计指标要求。

Abstract

A single driver chip based on dynamic scanning is developed for Liquid Crystal Display (LCD). The chip is a high voltage CMOS IC with mixed signals and offers optional output frequencies. The input data frequency of the chip is 13.5 MHz

and the 256 columns output voltage signals directly drive the LCD. The output signal range of every column is over 12 V

which is divided into 1 024 levels. The max-range rising/falling time of the output signal can be less than 5 s when load capacitor is 200 pF. The chip has been realized in Chartered 0.35 m 18 V high voltage process and the layout is designed carefully to minimize the mismatch error. Post layout simulation results illustrate that the design can well accord with the specification.

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references

Hong S I, Han J W, Kim D H, et al. A double-loop control LED backlight driver IC for medium-sized LCDs [J]. ISSCC Dig. Tech. Papers, 21, 6(2): 116-118.[2] Woo J K, Jeong D K, Kim S H. High-speed 1-bit LCD column driver with a split DAC and a class-AB output buffer [J]. IEEE Transactions on Consumer Electronics, 29, 55(3):1431-1437.[3] Yamaguchi K, Hori Y, Lee S W, et al. A 1b column driver with variable-current-control interpolation for mobile active-matrix LCDs [J]. ISSCC Dig. Tech. Papers, 29, 15(2):138-139.[4] 林志成, 邵庆益, 陈阿青. 用于TFT-LCD驱动电路的输出缓冲放大器 [J]. 液晶与显示, 24, 24(3):49-412.[5] Langen K, Huijsing J H. Compact low-voltage power-efficient operational amplifier cells for VLSI [J]. IEEE J. Solid-State Circuits, 1998, 33:1482-1496.[6] 应根裕, 胡文波,邱勇,等. 平板显示技术 [M]. 北京:人民邮电出版社, 22: 187-212.[7] Razavi B. Design of analog CMOS integrated circuits [M]. Beijing: Tsinghua University Press, 23: 377-39.[8] Razavi B. Principles of data conversion system design [M]. New Yorks: IEEE Press, 1995: 7-94.[9] Doris K, van Roermund A , Leenaerts D. Wide-bandwidth High Dynamic Range D/A Converters [M]. Berlin: Springer, 26: 45-88.

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