膽固醇液晶驅動電路

DRIVING CIRCUIT FOR CHOLESTEROL LIQUID CRYSTAL DISPLAY

張君維(Chun-Wei Chang)

指導教授 ： 黃淑絹

大同大學/電機資訊學院/電機工程學系所/碩士(2011年)

摘要

本篇論文主要設計一個應用在44陣列的膽固醇液晶的驅動電路，其中包含移位暫存器、資料鎖存器、計數器、數位邏輯電路、切換式電阻串、高壓輸出的運算放大器。將行跟列的高壓輸出部分做半個週期的切換（行為灰階資料的電壓，列為參考電壓），行跟列的輸出分別接到膽固醇液晶的兩端，調整此二電壓差即可控制其灰階，灰階控制則是採用四位元數位/類比轉換器。
　　本驅動器所採用的是台積電0.25μm HV製程，使用的電源電壓為5V及60V，高壓運算放大器的放大倍率可由外接的電阻來調整，列的參考電壓及週期的控制亦可由外接的電路調整，如此可應用在不同特性的膽固醇液晶上。整體佈局面積為1517umX900um。

關鍵字

高壓驅動 ； 膽固醇液晶 ； 膽固醇

並列摘要

In this thesis, a driving circuit for a 44 matrix cholesterol liquid crystal display is proposed. This design includes shift register, data latch, counter, digital logic circuit, switching register string, operation amplifier which has a high voltage output. The column and row’s HV outputs are switching twice in a clock period. The voltage difference between the two terminals of the cholesterol liquid crystal determines the gray level, which is controlled by a 4-bit DAC.
The proposed cholesterol liquid crystal driver was simulated using TSMC 0.25μm HV process model with a 5V supply and 60V supply. The HV OPAMP is configured as an non-inverting amplifier with the gain controlled by the external resistors. The reference voltages of row’s driver are provided externally for flexibility. The overall layout area is 1517umX900um.

並列關鍵字

high voltage driving ； cholesterol liquid crystal ； cholesterol

參考文獻

[1] 黃雅鈴, ”類紙式膽固醇液晶顯示器,” 第六章, 國立成功大學,物理研究所, 碩士論文, 2005.

[2] 王智正,”適用於液晶顯示器驅動電路之分段式十二位元數位類比轉換器,”大同大學,通訊工程研究所,碩士論文,2010.

[3] E. Lueder, Liquid Crystal Display, John Wiley & Sons, Ine., 2001 (ISBN:0-471-49029-6)

[4] D.-K. Yang, “Flexible bistable cholesteric reflective displays,” J. Display Technology, Vol. 2, pp. 32-37, Mar. 2006.

[5] A. Monte, J. Doutreloigne, and A. van Calster, “Driving-scheme algorithms for intelligent energy-efficient high-voltage display drivers,” IEEE Trans. on Circuits Syst. I, vol. 56, no.2, pp. 496-507, Feb. 2009.