(44.192.10.166) 您好!臺灣時間:2021/03/06 04:32
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:::

我願授權國圖
: 
twitterline
研究生:何維軒
研究生(外文):Ho, Wei-Hsuan
論文名稱:開發一主動矩陣有機發光二極體顯示器之電流讀取電路
論文名稱(外文):Development of a Current Readout Circuit for Active Matrix Organic Light Emitting Diodes Displays
指導教授:黃聖傑黃聖傑引用關係
指導教授(外文):Huang, Sheng-Chieh
口試委員:劉柏村陳柏宏黃聖傑趙昌博
口試委員(外文):Liu, Bo-TsuenChen, Bo-HungHuang, Sheng-ChiehChao, Chang-Po
口試日期:2017-10-25
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電機工程學系
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:2017
畢業學年度:106
語文別:中文
論文頁數:51
中文關鍵詞:主動矩陣有機發光二極體電流讀取電路推拉式暫態電流預充電電路電流式類比數位轉換器電流式數位類比轉換器電流式比較器
外文關鍵詞:AMOLEDCurrent readout circuitPush-Pull Transient Current FeedforwardCurrent mode ADCCurrent mode DACCurrent comparator
相關次數:
  • 被引用被引用:0
  • 點閱點閱:97
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本論文針對電壓驅動所導致之主動矩陣有機發光二極體顯示器的有機發光二極體元件劣化,製程漂移等因素,在顯示器面板外部設計一款互補式金屬氧化半導體電流讀取電路,讀取顯示器面板中以六個薄膜氧化電晶體和一個電容組成的畫素電路之電流大小。首先使用一推拉式暫態電流加速電路對面板的電流感測線做預充電,其目的是加速面板畫素電路電流進入外部電路同時並放大畫素電流。然後設計一電流讀取電路,其架構包含電流式數位類比轉換器,電流比較器,雜散電流相減器以及其數位控制電路,經由雜散電流相減器減去因使用推拉式暫態電流加速電路所造成的背景電流,並對輸入電流與電流式數位類比轉換器的電流送進電流比較器進行比較,將期比較結果送進數位控制電路,其中數位電路中包含了循序漸進式邏輯(Successive approximation registers)以及暫存器,最後由數位電路輸出對應輸入電流的數位值,並完成電流感測的功能。感測電流的大小範圍在0.5nA至500nA,感測時間小於7us。
This thesis presents a CMOS current readout circuit in external active matrix organic light emitting diodes (AMOLED) for sensing thin-film transistor (TFT) current of AMOLED 6T1C pixel circuit, due to TFT current is extremely sensitive to the process drift by voltage-mode driving and OLED degradation. First of all, a Push-Pull Transient Current Feedforward (PPTCF) Circuit is used to pre-charge the AMOLED current sensing line, for enhancing the TFT current speed and amplifying current flowing into the current readout circuit. Then, a current readout circuit is designed to sense the current from pixel circuit. First, a baseline current subtracter is designed to subtract the baseline current from the PPTCF. Second, a current mode Digital Analog Converter is designed to generate current source for comparing with the pixel current in current comparator. At last, a digital circuit which used Successive approximation registers and register generate the digital output and complete the sensing current function. The sensing current value between 0.5nA to 500nA, sensing time less than 7us.
摘 要 i
ABSTRACT ii
誌 謝 iii
Table of Content iv
Table title vi
Figure Captions vii
Chapter 1 Introduction 1
1.1 Motivation 1
1.2 Driving Methods of AMOLED Display Driver IC. 1
1.3 Organization of This Thesis 2
Chapter 2 Driving Methods of AMOLED Driver IC 4
2.1 AMOLED Driving Systems 4
2.2 6T1C pixel circuit 7
2.3 6T1C pixel circuit opeating principle with sensing current phase 9
2.4 RC Loading of 6T1C pixel circuit 11
Chapter 3 Design of CMOS Current Readout Circuit 12
3.1 The System Architecture 12
3.2 Push-Pull Transient Current Feedforward Circuit 14
3.3.1 Current mode Digital to Analog Converter and Current Subrractor 15
3.3.2 Bandgap reference circuit 18
3.3.3 Operational Amplifier (OPA) Design 19
3.4 Current Comparator 20
3.5 Digital control Circuit 22
3.6 Current mode Analog to Digital Converter 25
Chapter 4 Simulation Results and Chip Implementation 27
4.1 AMOLED Display Current 27
4.2 Simulation results of CMOS current readout circuit 29
4.2.1 Current Comparator 29
4.2.2 Current mode Digital to Analog Converter 31
4.2.3 Digital control circuit 32
4.2.4 Current mode Analog to Digital Converter 35
4.3 Experiment Result 36
4.3.1 Test environment 36
4.3.2 The whole chip test 42
4.3.2.1 Current Comparator 42
4.3.2.2 Push-Pull Transient Current Feedforward circuit 42
4.3.2.3 Current mode Analog to Digital Converter 44
Chapter 5 Conclusions and Future Works 48
5.1 Conclusions 48
5.2 Future Works 48
References 49
[1] A. Nathan, G. R. Chaji, and S. J. Ashtiani, “Driving Schemes for a-Si and LTPS AMOLED Displays,” IEEE J. of Display Tech., vol. 1, no. 3, pp. 267-277,. Dec 2005.

[2] J. Y. Jeon, Y. J. Jeon, Y. S. Son, K. C. Lee, H. M. Lee, S. C. Jung, K. H. Lee and G. H. Cho, “A direct-type fast feedback current driver for medium-to large-size AMOLED displays,” IEEE Int. Solid-State Circuits Conf., pp. 174-177, 2008.

[3] J. H. Lee, J. H. Kim, and M. K. Han, “A new a-Si:H TFT pixel circuit compensating threshold voltage shift of a-Si H TFT and OLED for active matrix OLED,” IEEE Elec. Device Letts, vol. 26, no. 12, pp. 897-899, Dec. 2005.

[4] H. J. In, B. D. Choi, H. K. Chung and O. K. Kwon, “Current-Sensing and Voltage-Feedback Driving Method for Large-Area High-Resolution Active Matrix Organic Light Emitting Diodes,” Japanese Journal of Applied Physics, vol. 45, No. 5B, 2006, pp. 4396-4401.

[5] Y. J. Jeon, J. Y. Jeon, Y. S. Son, J. Huh, and G. H. Cho, “A High Speed Current-Mode Data Driver With Push-Pull Transient Current Feedforward for Full-HD AMOLED Displays,” IEEE J. Solid-State Circuits, vol. 45, no. 9, Sep 2010.

[6] Y. S. Son, S. K. Kim, Y. J. Jeon, Y. J. Woo, J. Y. Jeon, G. H. Lee, and G. H. Cho, “A Novel Data Driving Method and Circuits for AMOLED Displays,” Proc. of SID Digest, 2006, pp. 343-346.

[7] S. Jafarabadiashtiani, G. Chaji, S. Sambandan, D. Striakhilev, and A. Nathan, “A New Driving Method for a-Si AMOLED Displays Based on Voltage Feedback,” SID 05 DIGEST, pp. 316-319, 2005.

[8] J. S. Bang, H. S. Kim, S. H. Park, G. H. Kim and G. H. Ch, “A Real-time TFT Compensation through Power Line Current Sensing for High-resolution AMOLED Displays,” Proc. of SID DIGEST, pp. 724-727, 2014.

[9] M. Ohta, H. Tsutsu, H. Takahara, I. Kobayashi, Tsuyoshi Uemura and Yoneharu Takubo, “A novel current programmed pixel circuit for active matrix OLED displays,” in Proc. Dig. SID, 2003, pp. 108-111.

[10] S. H. Jung, W. J. Nam and M. K. Han, “A new voltage-modulated AMOLED pixel design compensating for threshold voltage variation in poly-Si TFTs,” IEEE Electron Devic Lett., vol. 25, no. 10, pp. 690-692, Oct. 2004.

[11] C. L. Lin, T. T. Tsai and Y. C. Chen, “A novel voltage-feedback pixel circuit for AMOLED diplays,” IEEE J. Display Technol., vol. 4, no. 1, pp. 54-60, 2008.

[12] M. Shimoda, K. Abe, H. Haga, H. Asada, “A integrated ploy-Si TFT current data-line pre-charge function,” J. Soc. Inf. Display, vol. 11, no. 3, pp. 461-466, 2003.

[13] N. Komiya, Y. C. Oh, M. Eom. K, W. Kim. Y and C. Park. S, “A 2.0-in. AMOLED panel with voltage programming pixel circuits and point scanning data driver circuits,” in Proc. Int. Disp. Workshops (IDW’04), 2004, pp. 283-286.

[14] H. J. In and O. K. Kwon, “External compensation of non-uniform electrical characteristics of thin-film transistors and degradation of OLED devices in AMOLED displays,” IEEE Electron. Device Lett., vol. 30, no. 4, pp. 377-379, Apr. 2009.

[15] J. S. Bang, H. S. Kim, S. H. Park, K. D. Kim, S. W. Choi, O. J. Kwon, C. S. Shin, J. Y. Lee and G. H. Cho, “A Hybrid AMOLED Driver IC for Real-Time TFT Non-uniformity Compensation,” IEEE J. SOLID-STATE CIRCUITS, Sep 2015.

[16] S. Q. Zheng, Pixel compensation circuit for AMOLED displayer [P]. CN Patent:103150991A.

[17] B. Pilani, K. B. Goa, “A 8-bit SAR ADC using Current Mode Approach for Bio-Medical Applications” IEEE Signal Processing and Networking (NCCSN), Oct 2014.

[18] P. H. Huang, H. Lin, and Y. T. Lin, "A simple subthreshold CMOS voltage reference circuit with channel-length modulation compensation,"IEEE Trans. Circuits Syst. II, Expr. Briefs, vol. 53, no. 9, pp. 882-885, Sep. 2006.

[19] Q. Huang, J. Feng, “10-bit Nanoampere Level Current-Steering Digital to Analog Converter” IEEE Communications and Information Technologies (ISCIT), Sep 2013.

[20] S. Sarkar, S. Banerjee, “500 MHz Differential Latched Current Comparator for Calibration of Current Steering DAC” IEEE Students' Technology Symposium (TechSym), May 2014.

[21] J. S. Bang, H. S. Kim, K. D. Kim, O. J. Kwon, C. S. Shin, J. Lee, and G. H. Cho, Fellow, “A Hybrid AMOLED Driver IC for Real-Time TFT Nonuniformity Compensation” IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 51, NO. 4, Apr 2016

[22] Z. Z, “Development of a Current Readout Circuit for Active Matrix Organic Light Emitting Diodes Displays” Thesis Submitted to Institute of Electrical and Computer engineering National Chiao Tung University in Partial Fulfillment of the Requirements for the Degree of Master

[23] K. Huang, “Development of a Current Readout Circuit for Active Matrix Organic Light Emitting Diodes Displays” Thesis Submitted to Institute of Electrical and Computer engineering National Chiao Tung University in Partial Fulfillment of the Requirements for the Degree of Master

[24] A. Agarwal, Y. B. Kim, S. Sonkusale,” Low power current mode ADC for CMOS sensor IC” Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

[25] E. Maghsoudloo, S. Moradi, A. Arian,” Current Mode Sensor Interface System for Biomedical Implantable Applications” Electrical Engineering (ICEE), 2012 20th Iranian Conference on

[26] J. S. Bang, H. S. Kim, S. H. Park, G. H. Kim and G. H. Cho,” A Real-time TFT Compensation through Power Line Current Sensing for High-resolution AMOLED Displays” SID 2014 DIGEST, pp. 724-727.

[27] G. H. Lee, S. K. Kim, Y. S. Son, J. Y. Jeon, Y. J. Jeon, and G. H. Cho,” A Fast Driving Circuit for AMOLED Displays Using Current Feedback” SID 06 DIGEST, pp. 363-365, 2006

[28] C. X. Wu, “The Novel Sensing Circuit for an Ultra-thin film On-cell Flexible Capacitive Touch Panel” A Thesis Submitted to Institute of Electrical and Control Engineering College of Electrical and Computer Engineering National Chiao Tung University in partial Fulfillment of the Requirements for the Degree of Master in Electrical Control Engineering.
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
系統版面圖檔 系統版面圖檔