Design of Small/Medium Size TFT-LCD Source Driver

SHI Liu-xing; WEI Ting-cun; FAN Xiao-ya

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Design of Small/Medium Size TFT-LCD Source Driver

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- Design of Small/Medium Size TFT-LCD Source Driver
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 1, Pages: 93-97(2009)
- 作者机构：
  
  西北工业大学教育部嵌入式系统集成工程研究中心, 陕西西安 710072, E-mail: liuxings@yahoo.com
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN702;TN321+.5
- Received：01 January 2008，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2009，
  
  Published：20 February 2009
- 稿件说明：
移动端阅览
史刘星;魏廷存;樊晓桠. 中小屏幕TFT-LCD源驱动器电路设计[J]. 液晶与显示, 2009,24(1): 93-97

SHI Liu-xing;WEI Ting-cun;FAN Xiao-ya. Design of Small/Medium Size TFT-LCD Source Driver[J]. 液晶与显示, 2009,24(1): 93-97
史刘星;魏廷存;樊晓桠. 中小屏幕TFT-LCD源驱动器电路设计[J]. 液晶与显示, 2009,24(1): 93-97 DOI：

SHI Liu-xing;WEI Ting-cun;FAN Xiao-ya. Design of Small/Medium Size TFT-LCD Source Driver[J]. 液晶与显示, 2009,24(1): 93-97 DOI：

摘要

针对中小屏幕TFT-LCD源驱动器电路

提出了一种新型的源驱动器结构

重点设计了一种电流可调、采用零点补偿的轨对轨结构的输出缓冲电路。该电路结构不但满足了系统功能和面积要求

而且能够很好地适应未来TFT-LCD芯片的发展趋势。Hspice 仿真表明

在10 k电阻

20 pF电容串连负载模型下的增益为90.7 dB

相位裕度75

静态电流消耗1.1 A

电路面积400 m

满足了系统要求。

Abstract

A source driver structure used for small or medium size TFT-LCD was proposed

and the rail to rail output buffer of source driver was mainly studied and designed. This structure is especially suitable for the future development for large size TFT-LCD panel

and satisfies the driver ICs requirements for both area and function. This paper mainly describes the design of the rail-to-rail output buffer based on the proposed structure. The Hspice simulation results show that the gain margin is 90.7 dB and phase margin is 75

and the static current is 1.1 A

the buffer area is 400 m

which satisfies the system requirements.

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references

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. 邓宏贵,曹祥,罗安,等. AB类功率放大器的设计与仿真研究 [J]. 光电子技术 ,2004,25(4):36-38.

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