近年來LCD顯示器不斷發展，廠商積極的投入資源，LCD顯示器的設計作法也投入新的思維，顯示器的產品一直走向更清晰的影像，更逼真的色彩。我們瀏覽探索了不同的新技術，進一步設計了一個可以調變背光顏色的LCD顯示器光學系統，在這個新設計當中，我們儘量維持現有的顯示器架構，僅做少部份的必要改變，以相容於既有的生產程序。
在研究過程中，基於量測所得的光譜做分析發現，彩色濾光片三主色的穿透率光譜會有很大的重疊區域，這是造成顏色飽和度不佳的主要原因，而且其中藍色與綠色的穿透率光譜會有較大的重疊區域。所以，我們以時序分工(time sharing)的設計，提出一個新穎的分色作法，以不同的主色分色和背光光源的同時控制，將彩色濾光片的缺點避開。我們認為這樣是可行性高的設計。將此設計實作完成之後，以實驗量測加以印證，有效地得到一個色域增大百分之二十的廣色域混色模式。

In recent years, the intensive development of liquid-crystal displays (LCDs) has been creating much clearer images and much more vivid colors showing on the displays. As reviewing several new technologies, one novel design on the backlight modules of color LCD displays is proposed in this work to enhance the color qualities of the images but still not substantially change too much of the existing configuration of the LCD displays.
Based on measurements from the spectral analysis, we found the fact that the mismatch between the transmittance spectra of the color filters and the primary color lights from the backlight modules is the main excuse for poor color saturation. Most of all, the transmittance spectra of the blue color filters and the green color filters have a big overlap band such that the blue light from the backlight module can leak via the green color filters and the green light via the blue ones. Applying the time sharing concept, one novel categorizing method for color sequential multiplexing is proposed to effectively enhance the color gamut of the LCD displays. In our practical implementation, the color gamut has been greatly increased by almost 20%.

[1] R.W. Sabnis，"Color filter technology for liquid crystal displays,"，Displays 20 (1999)
[2] F. Yamada, H. Nakamura, et al., "Invited Paper: Color Sequential LCD Based on OCB with an LED Backlight," (SID, 2004).
[3] M. Anandan, "LED Backlight: Enhancement of picture quality on LCD screen," (SID, 2006).
[4] G. Harbers, and C. Hoelen, "High Performance LCD Backlighting using High Intensity Red, Green and Blue Light Emitting Diodes," (SID, 2001).
[5] H. J. Peng, W. Zhang, et al., "High contrast LCD TV using active dynamic LED backlight," (SOCIETY FOR INFORMATION DISPLAY, (2007), p. 1336.
[6] T. Shiri et.al, “RGB-LED backlight for LCD-TV with 0D, 1D and 2D adaptive dimming,”(SID, 2006)
[7] T. Shiga, and S. Mikoshiba, "Reduction of LCTV Backlight Power and Enhancement of Gray Scale Capability by Using an Adaptive Dimming Technique," (SID, 2004).
[8] E. Oh, S. Baik, et al., "IPS-Mode Dynamic LCD-TV Realization with Low Black Luminance and High Contrast by Adaptive Dynamic Image Control Technology," (2005).
[9] G. Harbers, and C. Hoelen, "High Performance LCD Backlighting using High Intensity Red, Green and Blue Light Emitting Diodes," (2001), p. 702.
[10] R. Lu, S. Gauza, et al., "LED-Lit LCD TVs," Molecular Crystals and Liquid Crystals 488, 246-259 (2008).
[11] L. Kerofsky, and S. Daly, "Distinguished Paper: Brightness Preservation for LCD Backlight Reduction," (SOCIETY FOR INFORMATION DISPLAY, 2006), p. 1242.
[12] R. Lu, Q. Hong, Z. Ge, et al., "Color shift reduction of a multi-domain IPS-LCD using RGB-LED backlight," Opt. Express 14, 6243-6252 (2006).
[13] IkuoHiyama et.al, “122% NTSC color gamut TFT LCD using 4 primary color LED backlight and field sequential driving,” IDW’02, AMD1/FMC2-4, International Display Workshop, p. 215-218., 2002
[14] S. Roth, N. Weiss, et al., "Multi‐primary LCD for TV Applications," (SID, 2007).
[15] H. Sugiura, H. Kaneko, et al., "Six‐Primary‐Color 23‐in WXGA LCD using Six‐Color LEDs," (SID, 2005).
[16] H. C. Cheng, I. Ben-David, and S. T. Wu, "Five-primary-color LCDs," Journal of display technology 6, 3-7 (2010).
[17] Y. C. Yang, K. Song, et al., "Development of Six Primary‐Color LCD," (SID, 2005).
[18] T. Ajito, T. Obi, et al., "Expanded color gamut reproduced by six-primary projection display," (2000), p. 130.
[19] E. Chino, K. Tajiri, H. Kawakami, et al., "Invited Paper: Development of Wide‐Color‐Gamut Mobile Displays with Four‐Primary‐Color LCDs," (SID, 2006).
[20] H. Seetzen, L. A. Whitehead, et al., "A High Dynamic Range Display Using Low and High Resolution Modulators," (Citeseer, 2003), p. 1450.
[21] H. Seetzen, W. Heidrich, et al., "High dynamic range display systems," (ACM, 2004), pp. 760-768.
[22] P. E. Debevec, and J. Malik, "Recovering high dynamic range radiance maps from photographs," (ACM, 2008), p. 31.
[23] K. Chiu, M. Herf, P. Shirley, et al., "Spatially nonuniform scaling functions for high contrast images," (CANADIAN INFORMATION PROCESSING SOCIETY, 1993), pp. 245-245.
[24] P. M. Acosta-Serafini, I. Masaki, et al., "Single-chip imager system with programmable dynamic range," (U.S. Patents, 2005).
[25] 大田登，色彩工程學-理論與應用，全華圖書，2008年10月
[26] 胡國瑞、孫沛立，顯示色彩工程學，全華圖書 p.72-73，2009年6月
[27] 大田登，基礎色彩再現工程，全華圖書(初版)，2003年
[28] http://docs.oracle.com/javase/tutorial/extra/
fullscreen/doublebuf.html
[29] Peter J Kovach, Jeffery Richter, Inside Direct3D ,
Microsoft Press
[30] Bradley Bargen , Peter Donnelly, Inside DirectX, MicroSoft Press
[31] W. P. Lin, T. H. Yang, and C. C. Sun, "Method of increasing color gamut of a color display," (U.S. Patents No. 7995014B2, 2011).