(12) Ullltfild States Patent (10) Patent No.: US 8,044,893 B2 Nathan et al. (45) Date of Patent: Oct. 25, 2011 (54) VOLTAGE PROGRAMMED PIXEL CIRCUIT, 5,748,160 A 5/ 1998 Shieh et al. DISPLAY SYSTEM AND DRIVING METHOD 2 garblélov eH11~ , , 3W3. 3. THEREOF 5,903,248 A 5/1999 Irwin 5,917,280 A 6/1999 B t 1. (75) Inventors: Arokia Nathan, Waterloo (CA); 5,952,739 A 9/1999 Sgiggsef ajl, Gholamreza Reza Chaji, Waterloo 5,990,629 A 11/ 1999 Yamada et al. (CA); Peyman set-vati, Waterloo (CA) 6,023,259 A 2/2000 Howard et al. 6,069,365 A 5/2000 Chow et al. . . . . 6,091,203 A 7/2000 K h' 1. (73) Assignee: Ignis Innovation Inc., Kitchener, 6,097,360 A 8/2000 Hgjfgrsnilna et a 01112100 (CA) 6,144,222 A 11/2000 Ho 6,229,508 B1 5/2001 Kane ( * ) Notice: Subject to any disclaimer, the term of this 6,246,180 B1 6/2001 Nishigaki patent is extended or adjusted under 35 6,252,248 B1 6/2001 Sane et e1~ U.S.C. 154(b) by 1238 days. (Continued) (21) Appl. No.: 11/341,332 FOREIGN PATENT DOCUMENTS _ CA 2249592 7/1998 (22) Filed. J an. 27, 2006 (Continued) (65) Prior Publication Data OTHER PUBLICATIONS Us 2006/0187153 A1 Aug‘ 24’ 2006 Alexander et al.: “Pixel circuits and drive schemes for glass and (30) Foreign Application Priority Data elastic AMOLED displays”; dated Jul. 2005 (9 pages). _ _ Chaji et al.: “A low-power driving scheme for a-S1:H active-matrix organic light-emitting diode displays”; dated Jun. 2005 (4 pages). Jan. 28, 2005 (CA) .................................... .. 2495726 Chaji er at “A1OW_pOWerhigh_perfOrmanCe digital Circuit for deep (51) Int‘ Cl‘ submicron technologies”; dated Jun. 2005 (4 pages). G09G 3/30 (2006.01) (Continued) (52) U.S. Cl. ........ .. 345/76; 345/82; 345/204; 315/169.3 _ _ _ (58) Field of Classification Search ............ .. 345/76482, Prlmarr Emmlw — U111-Y1 Lao _ 345/90, 92, 93, 95, 99, 100, 204, 206, 214; Assistant Examiner 4 Shaheda Abdin 349/4243, 151; 315/169.3; 313/463 (74) Attorney, Agent, or Firm i Nixon Peabody LLP See application file for complete search history. (57) ABSTRACT (56) References Cited
A voltage programmed pixel circuit, display system having the pixel circuit and driving method thereof is provided. The pixel circuit includes a light emitting device, a driving tran
4996523 A 2/1991 Bell et e1~ sistor connected to the light emitting device and a program5266515 A 11/ 1993 Robb et 31' min circuit The ro rammin circuit ad'usts a ixel current 5,498,880 A 3/1996 Lee et al. .g ' P . g g . J . . P 5,619,033 A 4/1997 Weisfield during a programming cycle of the pixel circuit. 5,648,276 A 7/1997 Hara et al. 5,714,968 A 2/1998 Ikeda 30 Claims, 13 Drawing Sheets Q SEL[n] VDD 66 3' A2 E!
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6,288,696 B1 9/2001 Holloman 6,307,322 B1 10/2001 Dawson et al. 6,323,631 B1 11/2001 Juang 6,392,617 B1 5/2002 Gleason 6,433,488 B1 8/2002 Bu 6,501,466 B1 12/2002 Yarnagashi et al. 6,580,408 B1 6/2003 Bae et al. 6,693,610 B2 2/2004 Shannon et al. 6,697,057 B2 * 2/2004 Koyama et al. ............. .. 345/204 6,734,636 B2 5/2004 Sanford et al. 6,859,193 B1 2/2005 Yumoto 6,919,871 B2 7/2005 Kwon 6,940,214 B1 9/2005 Komiya et al. 7,129,914 B2 10/2006 Knapp et al. 7,248,236 B2 7/2007 Nathan et al. 7,274,345 B2 * 9/2007 Imamura et al. .............. .. 345/76 7,310,092 B2 * 12/2007 Imamura ..................... .. 345/204 2001/0002703 A1 6/2001 Koyama 2001/0026257 A1 10/2001 Kimura 2001/0030323 A1 10/2001 Ikeda 2001/0043173 A1 11/2001 Troutrnan 2001/0045929 A1 11/2001 Prache 2002/0000576 A1 1/2002 Inukai 2002/0011796 A1 1/2002 Koyama 2002/0011799 A1 1/2002 Kimura 2002/0048829 A1 4/2002 Yamazaki et al. 2002/0195968 A1 12/2002 Sanford et al. 2003/0062524 A1 4/2003 Kimura 2003/0090481 A1* 5/2003 Kimura ....................... .. 345/211 2003/0107560 A1 6/2003 Yumoto et al. 2003/0111966 A1 6/2003 Mikami et al. 2003/0230980 A1* 12/2003 Forrest et al. ............... .. 313/600 2004/0070557 A1 4/2004 Asano et al. 2004/0145547 A1 7/2004 Oh 2004/0150595 A1 8/2004 Kasai 2004/0155841 A1 8/2004 Kasai 2004/0196275 A1 10/2004 Hattori 2004/0252089 A1 12/2004 Ono et al. 2005/0007357 A1 1/2005 Yarnashita et al. 2005/0067971 A1 3/2005 Kane 2005/0285825 A1 12/2005 Eom et al. 2006/0066527 A1* 3/2006 Chou ............................ .. 345/76 2006/0261841 A1 11/2006 Fish FOREIGN PATENT DOCUMENTS CA 2368386 9/1999 CA 2242720 1/2000 CA 2354018 6/2000 CA 2436451 8/2002 CA 2463653 1/2004 EP 1 028 471 A 8/2000 EP 1 130 565 A1 9/2001 EP 1465 143 A 10/2004 JP 09 090405 4/1997 JP 11231805 8/1999 WO 02/067327 A 8/2002 WO 2006/053424 5/2006
Chaji et al.: “A novel a-Si:H AMOLED pixel circuit based on shortterm stress stability of a-Si:H TFTs”; dated Oct. 2005 (3 pages). Chaji et al.: “A novel driving scheme for high-resolution large-area a-Si:H AMOLED displays”; dated Aug. 2005 (4 pages).
Chaji et al.: “Driving scheme for stable operation of 2-TFT a-Si AMOLED pixel”; dated Apr. 2005 (2 pages).
Chaji et al.: “Dynamic-effect compensating technique for stable a-Si:H AMOLED displays”; dated Aug. 2005 (4 pages).
Chaji et al.: “eUTDSP: a design study of a new VLIW-based DSP architecture”; dated My 2003 (4 pages).
Chaji et al.: “High Speed Low Power Adder Design With A New Logic Style: Pseudo Dynamic Logic (SDL)”; dated Oct. 2001 (4 pages).
Chaji et al.: “Pseudo dynamic logic (SDL): a high-speed and lowpower dynamic logic family”; dated 2002 (4 pages).
European Search Report for European Application No. EP 06 70 5080 dated Oct. 22, 2009 (5 pages).
International Search Report for International Application No. PCT/ CA2006/000096 dated May 12, 2006 (2 pages).
J afarabadiashtiani et al.: “A New Driving Method for a-Si AMOLED Displays Based on Voltage Feedback”; dated 2005 (4 pages).
Lee et al.: “Ambipolar Thin-Film Transistors Fabricated by PECVD Nanocrystalline Silicon”; dated 2006 (6 pages).
Ma e y et al: “Organic Light-Emitting Diode/Thin Film Transistor Integration for foldable Displays” Conference record of the 1997 International display research conference and international workshops on LCD technology and emissive technology. Toronto, Sep. 15-19, 1997 (6 pages).
Matsueda y et al.: “35.1: 2.5-in. AMOLED with Integrated 6-bit Gamma Compensated Digital Data Driver”; dated May 2004. Nathan et al.: “Backplane Requirements for Active Matrix Organic Light Emitting Diode Displays”; dated 2006 (16 pages).
Nathan et al.: “Driving schemes for a-Si and LTPS AMOLED displays”; dated Dec. 2005 (11 pages).
Nathan et al.: “Invited Paper: a-Si for AMOLED—Meeting the Performance and Cost Demands of Display Applications (Cell Phone to HDTV)”; dated 2006 (4 pages).
Nathan et al.: “Thin film imaging technology on glass and plastic”; dated Oct. 31-Nov. 2, 2000 (4 pages).
Philipp: “Charge transfer sensing” Sensor Review, vol. 19, No. 2, Dec. 31, 1999, 10 pages.
Rafati et al.: “Comparison of a 17 b multiplier in Dual-rail domino and in Dual-rail D L (D L) logic styles”; dated 2002 (4 pages). Safavian et al.: “Self-compensated a-Si:H detector with currentmode readout circuit for digital X-ray fluoro scopy”; dated Aug. 2005 (4 pages).
Safavian et al.: “TFT active image sensor with current-mode readout circuit for digital x-ray fluoroscopy [5969D-82]”; dated Sep. 2005 (9 pages).
Stewart M. et al., “Polysilicon TFT technology for active matrix OLED displays” IEEE transactions on electron devices, vol. 48, No.
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