臺灣博碩士論文加值系統

由於投影技術不斷創新，帶動了微型化投影機的發展風潮。現今市面上主流技術分別為：數位光源處理技術 (Digital Light Processing, DLP)、矽基液晶顯示技術(Liquid Crystal on Silicon, LCoS)、微機電反射鏡掃描技術(MEMS Mirror Scanning)。而微機電反射鏡掃描技術相較於以上兩種更具備了低耗電，更小的體積，反射鏡元件成本低廉等優勢。
目前應用於微型投影的傳統雷射調變技術，多以AM/PAM等振幅調變技術為主，但此類技術在環境溫度變化下，光功率輸出會隨溫度飄移，此結果會造成顯示畫面色彩、亮度的變異等缺點。
本論文提出了一套應用在微機電反射鏡掃描的新型PWM/PAM混成雷射調變技術，目的是為了改善傳統調變技術上的缺點，且具有增強顯示畫面均勻度的優點。本論文亦設計一雷射驅動調變電路實驗平台來實現此混成調變技術。最後，利用此平台做雷射光功率訊號的疊加量測，證明其可行性，且在環境溫度飄移的變因下，較傳統PAM模式的光功率輸出穩定。

Owing to the advancement of projection technology, the micro-projector is becoming more popular. Now, the main technology applied to projection display areDigital Light Processing(DLP), Liquid Crystal on Silicon(LCoS), and MEMS Mirror Scanning. The MEMS Mirror Scanning technology gets some advantages over others, such as lower energy consumption, more compact volume, and lower cost.

The previous laser modulation technology applied to MEMS Mirror Scanning is mainly amplitude modulation(AM/PAM). This modulation type will cause the variation of color and brightness because the laser output power depends on the environment temperature.

Our thesis proposes an novel method of laser modulation for the purpose of improving the previous defects and it can also enhancement the uniformity of display. We try to design a new laser driver circuits and builds up the digital video pattern conversion system. At last, we use this experimental platform to verify the innovative theory of laser modulation and prove that the innovative technology is better than amplitude modulation(AM/PAM) while environment temperature changing.

誌謝.............................................................I
摘要............................................................II
Abstract.......................................................III
目錄............................................................IV
圖目錄.........................................................VII
第一章 緒論.....................................................1
1.1 研究動機.....................................................1
1.2 研究目的.....................................................1
1.3 論文架構.....................................................2
第二章 微型投影機技術分析.......................................3
2.1 前言.........................................................3
2.2 數位光源處理技術 (Digital Light Processing, DLP).............3
2.3 矽基液晶顯示技術(Liquid Crystal on Silicon, LCoS)............5
2.4 雷射掃描投影(Laser Scanning Projection)技術..................8
第三章 新型混合雷射微投影調變技術...............................11
3.1 前言........................................................11
3.2 現今雷射相關調變技術概論鍳分析比較..........................11
3.2.1振幅調變（Amplitude Modulation, AM）技術...................12
3.2.2 脈波振幅調變（Pulse Amplitude Modulation, PAM）技術.......13
3.2.3 PAM(or AM)技術缺點剖析....................................15
3.2.4 脈波寬度調變（Pulse Width Modulation, PWM）技術...........18
3.2.5 脈波數目調變（Pulse Number Modulation, PNM）技術..........19
3.2.6 PWM(or PNM)技術缺點剖析...................................20
3.3 新型混合調變技術系統架構概念................................21
3.4 新型混合調變技術原理說明....................................23
3.5 新型混合調變技術優勢分析....................................25
3.6 像素功率型態(pixel power pattern)編排原則...................27
3.6.1 前言......................................................27
3.6.2 增強顯示畫面均勻度的方法..................................28
第四章 新型雷射調變技術之電路系統實現...........................33
4.1 前言........................................................33
4.2 電流源輸出電路設計概念......................................33
4.3 光通訊雷射驅動電路設計概念..................................35
4.4 新型雷射調變技術之電路系統開發..............................37
4.5 實驗平台整體電路系統架構....................................41
4.6 影像訊號編碼原則............................................45
4.7 實驗平台電路設計之PCB佈線圖.................................48
4.8 實驗平台數位電路驗證模擬與外部硬體電路測試..................51
4.8.1 實驗平台數位電路驗證模擬..................................51
4.8.2 實驗平台硬體電路測試......................................53
4.8.2.1 前言....................................................53
4.8.2.2 實驗平台雷射調變電路波形量測............................54
4.9 結論....................................................... 60
第五章 雷射光功率實驗量測.......................................62
5.1 前言........................................................62
5.2 雷射光功率訊號疊加驗證......................................64
5.3 環境溫度變異下雷射光功率訊號疊加驗證........................68
5.4 結論........................................................79
第六章 結論.....................................................80
參考文獻........................................................82
附錄A...........................................................85
附錄B...........................................................96
附錄C..........................................................117

[1] L. J. Hornbeck, "Digital light processing and MEMS： Timely convergence
for a bright future," Texas Instruments Inc., Dallas, Texas, 1998.
[2] L. J. Hornbeck, "Digital light process for high brightness, high
resolution applications," Proc. SPIE, 3013, 1997, pp. 27-40.
[3] Vishal Markandey, Todd Clatanoff, Greg Rettitt, "Video process for DLP
display system," Digital Video Products, Texas Instruments Inc., Dallas,
Texas,1996.
[4] 德州儀器網站 http://www.ti.com.tw/articles/detail.asp?sno=18
[5] 溫志堅，”反射式液晶顯示技術”，光訊，第89期，pp.16-23，2001。
[6] 劉慶全，” 投影機產業發展現況與趨勢”，零組件雜誌，10月，頁84-89，2000。
[7] Edward H. Stupp and Matthew S. Brennesholtz,” Projection
Displays”, John Wiley ＆ Sons, Vol.3, pp.116-126, 1999.
[8] Shin-Tson Wu and Deng-Ke Yang, “Reflective Liquid Crystal
Displays”, New York：John Wiley&Sons, 2001.
[9] R. Sprague, T. Montague, and D. Brown, “Bi-axial Magnetic Dirve
for Scanned Beam Display Mirrors,” Proc. SPIE, vol. 5721, pp.
1-13,2005.
[10] H. Urey, “Torsional MEMS Scanner Design for High-Resolution
Display Systems,” Proc. SPIE, vol. 4773, pp. 27-37, 2002.
[11] Scholles, M., Brauer, A., Frommhagen, K., Gerwig, C., Lakner, H.,
Schenk, H., Schwarzenberg, M., "Ultracompact laser projection systems
based on two-dimensional resonat microscanning mirrors", SPIE J.
Micro/Nanolith. MEMS MOEMS, 7 (2), pp. 021001-1-021001-11, 2008.
[12] Microvision網站 http://www.microvision.com/pico_projector_displays
/index.html
[13] 陳致曉(2008)，”微型雷射掃描投影技術簡介”，2009年5月3 日，取自影像顯示科
技人才培育網：http://www.fpd.edu.tw/entry/content!newsView.htm?id=1692
[14] Sharp, “Blue Violet Laser Diode”, Sharp Inc.,2006.
[15] 蔡耀萱，”抑制雷射掃描投影系統光斑之被動式微結構機制 ”，國立臺灣科技大學
光電工程研究所碩士論文，2010。
[16] Coldren L. A. and Corzime S. W., “Diode Lasers and Photonic Integrated
Circuits”, 1st ed., New York: McGraw-Hill, 1995.
[17] Joseph W. Goodman, “Speckle Phenomena In Optics: Theory and
Applications, 1st ed., Greenwood Village：Roberts & Company Publishers,
pp59-90, 2006.
[18] B. Razavi, “Design of Integrated Circuits for Optical Communication
Systems”, 1st ed., New York: McGraw-Hill, pp333-362, 2003.
[19] B. Razavi, “Data Conversion System Design”. New York: IEEE Press, 1995.
[20] P. E. Allen and D. R. Holberg, “CMOS Analog Circuit Design”. New York:
Oxford, 2002.
[21] R. Van de Plassche, “CMOS Integrated Analog-to-Digital and Digital-
to-Analog Converters”. Boston, MA: Kluwer Academic, 2003.
[22] Maxim, “155Mbps to 2.5Gbps Burst-Mode Laser Driver”, Maxim Inc., 2000.
[23] 林灶生，Verilog FPGA晶片設計，初版，台北：全華科技，頁2-16(CH10)，2004。
[24] 江堆金，SoC開發實戰：使用Verilog，初版，台北：學貫，頁2-43(CH3)，2004。