應用於液晶顯示器驅動電路之高性能運算放大器積體電路設計

High Performance Operation Amplifier Design for Liquid Crystal Display Driver

張守忠(Shou-Jung Chang)

指導教授 ： 鍾文耀

中原大學/工學院/電子工程研究所/碩士(2006年)

https://doi.org/10.6840/CYCU.2006.00013

摘要

自從Reinitzer發現液晶後，不斷的有學者投入研究，直到近年來才將液晶應用於顯示器上且日益進步。由於液晶顯示器的輕薄、省電及可攜式的特性，所以能快速的取代傳統的CRT (Cathode Ray Tube)顯示器，而成為新一代的顯示器霸主，而其中又以TFT-LCD(Thin Field Transistor Liquid Crystal Display)的技術較為成熟。
由於目前顯示器正朝向高解析度、大尺寸面板的方向前進，因此也遇到了許多的困難，諸如驅動時間的不足。因此本研究著重於TFT-LCD驅動電路之輸出電壓緩衝器設計，由於其低功耗、高驅動能力的嚴格要求，因此建構一個適合應用於源極驅動器輸出緩衝器之高性能運算放大器，其特性包含有軌對軌輸入輸出範圍、推挽式AB類輸出級、低功耗之設計並結合兩種加快驅動時間的方法使驅動的時間縮短進而應用在大尺寸的面板。本研究之電路為了驅動在高壓下操作的TFT，因此採用世界先進公司所提供之VIS 0.3um high voltage 2P4M polycide 3.3V/13.5V製程下線製作晶片。

關鍵字

薄膜電晶體液晶顯示器 ； 軌對軌運算放大器

並列摘要

After Reinitzer discovered liquid crystal, many scholars research into it. Until recent years, liquid crystal is used in display application and changing with each passing day. Because light, saving power, and portable performance, it rapidly replaces the traditional CRT display and becomes a head of display. The technology of TFT-LCD is more proficient than other display.
At present, it focuses in high resolution, large size plane. Because that, it meets a lot of difficulties, like driving time. In accordance with this, we focus in the output buffer of source driver design. Request for low power and high slew rate, we design a high performance operation amplifier for output buffer of source driver with rail-to-rail input/output range, push-pull class AB output buffer. And we combine two slew rate enhancement circuits for shorten driving time. This circuit is designed for driving high voltage TFT and fabricated in Vanguard International Semiconductor Corporation (VIS) 0.3um high voltage 2P4M polycide 3.3V/13.5V.

並列關鍵字

rail to rail OPA ； Thin Field Transistor liquid crystal display (TFT-LCD)

參考文獻

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