跳到主要內容

臺灣博碩士論文加值系統

(3.229.142.104) 您好!臺灣時間:2021/07/27 05:33
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:何明原
研究生(外文):Ming-YuanHo
論文名稱:藉由使用色溫6500K之LED背光模組來改善TFT-LCD之色偏現象
論文名稱(外文):Improvement in Color Shift of TFT-LCD Using LED Backlight Module with 6500K Color Temperature
指導教授:許渭州
指導教授(外文):Wei-Chou Hsu
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系專班
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:2012
畢業學年度:100
語文別:英文
論文頁數:78
中文關鍵詞:薄膜液晶顯示器色偏色飽和度伽瑪色溫色差值
外文關鍵詞:TFT-LCDColor ShiftColor GamutGammaColor TemperatureDelta E
相關次數:
  • 被引用被引用:0
  • 點閱點閱:665
  • 評分評分:
  • 下載下載:29
  • 收藏至我的研究室書目清單書目收藏:1
本研究是針對TFT-LCD的色偏問題進行分析與改善之研究。從色彩的基本屬性,包括色相、明度、彩度等等,改變不同的色彩屬性,例如背光源色塊分佈、顯示器迦瑪曲線及彩色濾光片的飽和度,來分析對TFT-LCD色偏現象的影響。
實驗的方法是改變不同的TFT-LCD色彩屬性參數,運用彩色分析儀CA-210量測TFT-LCD三原色刺激值後,透過色偏公式計算,求得TFT-LCD的色偏數值(Delta E)。分析不同色彩屬性參數的色偏數值(Delta E),找出造成TFT-LCD色偏差異的原因,並且提出合適且花費成本少的解決方案,改善TFT-LCD的色偏問題,並能符合國際電工委員會所制定的規範值。
而實驗所得到改善TFT-LCD的色偏方法,首先是選用接近色溫6500K的LED背光源模組,來降低TFT-LCD的整體色偏數值(Delta E)。然後進行TFT-LCD的迦瑪曲線調整,是先調整Red及Green的迦瑪曲線符合迦瑪曲線等於2.2來降低偏紅及偏綠的色偏現象,最後是調整Blue的迦瑪曲線來減少色偏變化的幅度。改善後的TFT-LCD色偏數值(Delta E),能有效的將平均的色偏數值(Delta E)降低至3以下。而本研究所提出的TFT-LCD色偏改善方法可以有效的運用在目前LED背光模組的顯示器上,讓使用者可以真正的觀賞到顯示器所傳達的影像內容。

This study is to research for the analysis and improvement of TFT-LCD color shift. We change properties of color, including value、hue and chroma in the basic properties of color. Such as, the color distribution of the display gamma curve, backlight's led bin and saturation of the color filters, to analyze the impact of TFT-LCD color shift.
The method of experimental is to change the color parameters of TFT-LCD. We use the color analyzer CA-210 to measure the three primary colors of TFT-LCD stimulus value through the color shift formula and obtain the delta E of TFT-LCD color shift. We analysis the delta E of different color parameters to identify the reason for the TFT-LCD color shift, and propose the appropriate and less cost solutions to improve the TFT-LCD color shift, and comply with the specifications developed by the IEC association.
The experimental method in improvement TFT-LCD color shift, in the first is selected closer to the LED backlight module with 6500K to reduce the overall color shift value of TFT-LCD. Then adjustment Gamma Curve of TFT-LCD, in the first, adjust the Gamma curve of red and green which to meet gamma equal to 2.2 to reduce the color shift of reddish and greenish, in the finally, adjust Gamma curve of Blue to reduce variational amplitude of Color temperature. We improve the delta E of TFT-LCD color shift which can effectively reduce the average delta E to less than 3. In the study, we propose the method in improvement TFT-LCD color shift can effective use in the LED backlight, so that users can actually watch the image of the display to convey.

Abstract (Chinese) I
Abstract (English) III
Acknowledgement V
Contents VI
Table Captions VIII
Figure Captions IX
Chapter 1 Introduction 1
1-1 General background information 1
1-2 Research purpose and method 2
1-3 Description of Content 2
Chapter 2 Literature Review 4
2-1 Theories of Chromaticity 4
2-2 Introduction of CIE Color System 5
2-3 CIE Color Difference Formulae 6
2-3-1 Color Matching Functions 6
2-3-2 RGB Color Specification 7
2-3-3 XYZ Color Specification 10
2-3-4 CIE 1976 UCS Chromaticity Diagram(Uniformity Color Space) 12
2-3-5 CIE 1976 (L*a*b*)、CIE 1976(L*u*v*) 15
2-3-5-1 CIE 1976 LAB Color space(CIE 1976 L*a*b*) 15
2-3-5-2 CIE 1976 LUV Color Space(CIE 1976 L*u*v*) 17
2-3-6 CIE 1994 18
2-4 Introduction of Gamma Curve 19
2-5 Introduction of Color Temperature 20
2-6 Introduction of Color Gamut 22
Chapter 3 Experimental Methods and Procedures 24
3-1 Test Color Patches and Specifications 24
3-2 System Configuration 26
3-2-1 Color Analyzer CA-210 27
3-2-2 Pattern Generator VG-835 28
3-2-3 The Experimental Environment 29
3-2-4 The Measurement Program 30
Chapter 4 Experimental Results and Analysis 31
4-1 Design of Experiments 31
4-2 The Experimental Results 35
4-3 Experimental Data Analysis 39
4-4 The Experimental Modifications 46
4-5 The Reliability of LED Backlight Experiment 51
4-5-1 Conditions 1 of an Experiment Results 52
4-5-2 Conditions 2 of an Experiment Results 58
4-5-3 Conditions 3 of an Experiment Results 64
4-6 The Photos of Color Shift Improvement 70
Chapter 5 Conclusions and Future Work 74
5-1 Conclusions 74
5-2 Suggestion for Future Work 75
References 76

[1] 大田登原著,陳鴻興/陳詩涵譯,色彩工程學理論及應用,全華科技圖書,
台北市,p54-58, 2007.

[2] J. Guild, “The Colorimeteric Properties of the Spectrum, Philos. R. Soc. London, Ser. A, Vol. 230, pp. 149-187, 1931.

[3] K. R. Gegenfurtner and L. T. Sharpe, Color Vision: From Genes to Perception, Cambridge University Press, U.K. ; New York, pp. 3-51, 1999.

[4] 大田登原著,陳鴻興/陳君彥譯,基礎色彩再現工程,全華科技圖書,台北市,pp. 1.1-1.7, 2003.

[5] 羅梅君著,印刷色度學,印刷科技出版社,台北市, p96, 1991.

[6] Standard on Colorimetric Observers, CIE S002(1986b).

[7] G. Wyszecki and W. S. Stiles, Color Science,2nd Edition, John Wiley & Sone, New York, 1982.

[8] D. L. MacAdam, “Visual Sensitivities to Color Differences in Daylight, J. Opt. Soc. Amer., Vol.32, pp. 247-274, 1942.

[9] D. L. MacAdam, “Specification of Small Chromaticity Differences, J. Opt. Soc. Amer., Vol.33, pp. 18-26, 1943.

[10] “Commission Internationale delEclairage: Improvement to industrial colour difference evaluation, Publ. CIE 141; 2001.

[11] CIE Recommendations on uniform color spaces(1978),Color difference equations, psychometric color terms, Supplement NO.2 to CIE publication NO.15(E-1.3.1), 1971.

[12] 山中俊夫原著,黃書倩譯,色彩學的基礎,六和出版社, 台北市,Chapter 6,2003.

[13] G. Wyszecki and W. S. Stiles, “Colorimetry: CIE Uniform Color Spaces and Color-Difference Formulae, Color Science: Concepts and Methods, Quantitative Data and Formulae, Wiley inter-science, 2nd ed., Wiley, New York pp. 165-169, 1982.

[14] 維基百科-Wikipedia網站.
http://wiki.patapom.com/index.php/Colorimetry.

[15] Phil Green, Colour Engineering, JOHN Wilely & Sons,LTD, pp. 53-57, 2002.

[16] Roy S. Berns, Proinciples of Color Technology, JOHN Wilely & Sons,INC, pp. 65-70, 2000.

[17] H. C. Lee, “Introduction to color imaging science, Cambridge University Press, 2005.

[18] R. A. Robertson, “Historical development of CIE recommended color difference equations Color Research and Application 15, pp. 167-170, 1990.

[19] C. Oleari, “Comparisons between color-space scales, uniformity-color scale atlases, and color-difference formulae, Color Research and Application 26, pp. 351-361, 2001.

[20] 維基百科-Wikipedia網站.
http://en.wikipedia.org/wiki/Planckian_locus.

[21] Wyszecki, G. , Stiles, W. S., Color Science, John Wiley & Sons, 1982.

[22] R.W.G. Hunt, Measuring Colour 3rd Edition, Fountain Press, England, 1998.

[23] H.Sugiura,et al., “Prototype of a Wide Gamut Monitor Adopting an LED-Backlight LCD Panel, SID Intl. Symp. Digest Tech. Papers, pp. 1266-1269, 2003.

[24] Microsoft , Windows Color Quality Specifications for Liquid Crystal Display OEM, pp6, 2001.

[25] Microsoft , Windows Color Quality Specifications for Liquid Crystal Display OEM, pp10, 2001.

[26] KONICA MINOLTA, “Display Color Analyzer CA-210 Instruction Manual, pp. 2-6, 2002.

[27] 宇宏企業股份有限公司網站.
http://www.radiotek.com.tw.

[28] 貓貓桌布酷網站.
http://big5.wallcoo.com/1280x1024/index.htm.

連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top