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研究生:林勇旭
研究生(外文):Yoshi Lin
論文名稱:薄膜式電晶體液晶顯示器之驅動晶片實現
論文名稱(外文):An Implementation of the TFT-LCD Source Driver
指導教授:張鴻德張鴻德引用關係唐經洲
指導教授(外文):Hong-De ChangJing-Jou Tang
學位類別:碩士
校院名稱:南台科技大學
系所名稱:電子工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:61
中文關鍵詞:液晶液晶顯示器薄膜電晶體平面顯示器驅動電路
外文關鍵詞:LCDTFT-LCDTFT-LCD Driver ICSource DriverGate Driver
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本研究從平面顯示器(Flat-Panel Display)產業概況分析中發現,薄膜電晶體液晶顯示器(Thin Film Transistor Liquid Crystal Display)產值及市場需求正在擴大中。 每個薄膜電晶體液晶面板都需要有搭配高效能的驅動晶片,本論文主要目的是實現TFT-LCD的垂直驅動晶片,我們採用共通電極電壓極性反轉之驅動方法,並且為了調整液晶面版之非線性亮度特性,達到校正的目的因此,提出可調整之非線性數位類比轉換器(Non-Linear DAC),此Non-Linear DAC是改良Dual-Stage Resistor DAC架構,只使用(2p+2q)個電阻與開關就可產生2N種灰階(n=p+q),並利用混合信號積體電路設計流程,整合此混合信號驅動晶片以達到縮短晶片實現時程的目的。 本論文所實現的驅動晶片是使用TSMC 1P4M 0.35um製程,模擬結果顯示在3.3V的電源供應下,此驅動晶片操作速度可達70MHz,亦可驅動VGA、 SVGA 與XGA。

Based on the market analysis, the TFT-LCD (Thin Film Transistor Liquid Crystal Display) has been applied in many consumer products. The market requirement result in many factories invests in producing the TFT-LCD. Because the driver IC is the most important component in the TFT-LCD, to develop a high performance driver IC has become a research topic. In this thesis, a digital source driver applicable to the color TFT-LCD (Thin Film Transistor Liquid Crystal Display) panel is presented. This mixed-signal circuit consists of three parts: the data controller, the non-linear DAC and the output buffer. In order to adjust the non-linear brightness characteristics of the TFT-LCD panels, a new non-linear DAC to facilitate the -correction is proposed. The non-linear DAC contains only (2p+2q) resistances and switches can up to p+q levels. For the output buffer, a high performance rail-to-rail output driver is designed for the high capacitive loads. This driver is implemented by the TSMC 1P4M 0.35um technology. The results of post layout simulation show that this circuit can be operated at the speed of 70MHz with 3.3V power supply. Thus it is applicable to the TFT-LCD panels with the VGA, SVGA, and XVGA standards.

Chapter 1 INTRODUCTION 1
1.1 LCD產業概況與研究動機 1
1.2 論文架構 3
Chapter 2 LCD OPERATION 4
2.1 液晶的光電效應 4
2.2 LCD種類的比較 6
2.2.1 TN-LCD 6
2.2.2 STN-LCD 7
2.2.3 TFT-LCD 8
2.3 Addressing Technologies 8
2.3.1 被動矩陣驅動法 9
2.3.2 主動矩陣驅動法 10
2.4 The Structure of TFT-LCD 10
2.5 Inversion Scheme 14
2.6 g-Value and g-Correction 15
2.6.1 g-Value 15
2.6.2 g-Correction 17
2.7 VCOM Inversely with the Polarity 19
Chapter 3 BASIC CONCEPTS OF SOURCE DRIVER 21
3.1 TFT-LCD系統架構 21
3.2 SOURCE DRIVER ARCHITECTURES 23
3.2.1 The basic architecture 24
3.2.2 The Okada’s architecture 25
3.2.3 The Alan’s architecture 26
3.3 DAC Architectures 27
3.3.1 R-2R Combination DAC 28
3.2.2 Folded Resistor-String DAC 29
3.3.3 Resistor-String 8-bit DAC 30
3.3.4 Our non-linear DAC 31
Chapter 4 THE DESIGN OF THE SOURCE DRIVER 34
4.1 Mixed-Signal IC Design Flow 34
4.2 Digital Source Driver 37
4.3 The Simulation of Data Controller 40
4.4 Non-Linear DAC 42
4.5 Output Buffer 44
CHAPTER 5 EXPERIMENTAL RESULTS 47
5.1混合信號IC的驗證流程 47
5.2 Gate Level Simulation Data Controller (Digital Circuit) 49
5.2 Simulation of Non-Linear DAC & Output Buffer (Analog Circuit) 52
5.3 整合的結果 53
Chapter6 總結與未來工作討論 57
參考文獻 59
作者簡介 61

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