Abstract
A low power 640×480 OLED-on-silicon chip design that used in microdisplay was presented. A novel pixel circuit was proposed to meet the special requirement of OLED-on-silicon. The novel pixel consists of three transistors and one capacitor (3T1C). It has simple structure and can effectively reduce the current glitch generated during the AC driving from 55 μA to 7.5 μA, so that it can improve the precision of grayscale of display as well as extend the lifetime of OLED material. Except for the pixel array, low power row driver, column driver and other functional modules were also integrated on the chip. Several techniques were adopted to reduce the power consumption and frequency requirement of the chip. Finally, a 16×3×12 resolution chip was fabricated with standard 0.35 μm CMOS process of CSM and the chip can operate correctly.
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LIN Hai-qing, NAVIASKY E, EBNER J, EVANS W, FARRELL P, HUFFORD M, LEVY G, WHEELER D, ALLISON B, PRACHE O. An 852×600 pixel OLED-on-silicon color microdisplay chip using CMOS sub-threshold-voltage-scaling current driver [C]// IEEE, Digest of Technical Papers of ISSCC. USA: IEEE press, 2002, (2): 356–546.
WANG Hong, YU Jun-sheng, LI Lu, TANG Xiao-qing, JIANG Ya-dong. Structure optimization of organic light-emitting devices [J]. Optoelectronics Letters, 2009, 5(2): 0093–0096.
Fan-Chiang K H, YEN Cheng-chi, WU Cheng-hung, CHEN Chien-jung, LIAO Bing-jei, HO Yung-yuan, LIU Chung-yuan, CHEN Yen-chen. LCOS panel using novel color sequential technology [C]// SID Symposium Digest of Technical Papers. USA: SID, 2007, 38(1): 150–153.
HUANG Ran, WANG Xiao-hui, WANG Wen-bo, DU Huan, HAN Zheng-sheng. Design of a 16 gray scales 320×240 pixels OLED-on-silicon driving circuit [J]. Journal of Semiconductors, 2009, 30(1): 015010-1–4.
SI Yu-juan, ZHAO Yi, CHEN Xin-fa, LIU Shi-yong. A simple and effective ac pixel driving circuit for active matrix OLED [J]. IEEE Transactions on Electron Devices, 2003, 50(4): 1137–1140.
SHIN D Y, WOO J K, HONG Y, KIM K N, KIM D I, YOO M H, KIM H D, KIM S. Reducing image sticking in AMOLED displays with time-ratio gray scale by analog calibration [J]. Journal of the Society for Information Display, 2009, 17(9): 705–713.
LIU Yan-yan, GENG Wei-dong, DAI Yong-ping. The restraining of switch effects in AC driving pixel circuit of OLED-on-silicon [J]. Optoelectronics Letters, 2010, 6(2): 0112–0115.
PARK C Y, LEE S H, HYUN C H, KANG S K, KWAK B C, LIM H S, KWON O K, CHUNG H K. High efficient top emitting OLED micro display for personal display application [C]// Proceeding of the 17th International Display Workshops. Japan: ITE and SID, 2010: 327–330.
ASHTIANI S J, NATHAN A. A driving scheme for active-matrix organic light-emitting diode displays based on current feedback [J]. Journal of Display Technology, 2009, 5(7): 257–264.
ZARDAREH S Z, BOROUMAND F A. Degradation in organic light emitting diodes [J]. Journal of World Academy of Science, Engineering and Technology, 2009, 50: 274–277.
SHEN J, WANG D, LANGLOIS E, BARROW W A, GREEN P J, TANG C W, SHI J. Degradation mechanisms in organic light emitting diodes [J]. Synthetic Metals, 2000, 111/112: 233–236.
WEGMANN G, VITTOZ E A, FOUAD R. Charge injection in analog MOS switches [J]. Journal of Solid-state Circuits, 1987, SC-22(6): 1091–1097.
DAWSON R M A, SHEN Z, FURST D A, CONNOR S, HSU J, KANE M G, STEWART R G, IPRI A, KING C N, GREEN P J, FLEGAL R T, PEARSON S, BARROW W A, DICKEY E, PING K, ROBINSON S, TANG C W, van SLYKE S, CHEN F, SHI J, LU M H, STURM J C. The impact of the transient response of 0rganic light emitting diodes on the design of active matrix OLED displays [C]// IEDM’98 Technical digest, International. USA: IEEE Press, 1998: 875–878.
SOH K M, KLEIN S, HITZELBERGER C, XU Chi-hao. Electrical and optical characterization of PM OLED displays [C]// Proceeding of the Twenty-Fifth International Display Research Conference, EuroDisplay 2005. USA: SID, 2005: 393–396.
BAKER R J. CMOS Circuit Design, Layout, and Simulation [M]. Third Edition. USA: Wiley-IEEE Press. 2011: 339–340.
JIN Li-yan, LEE J H, HA P B, KIM Y H. Design of logic process based low-power 512-bit EEPROM for UHF RFID tag chip [J]. Journal of Central South University of Technology, 2010, 17(5): 1011–1020.
PAN Xue-wen, ZHOU Ji-cheng, ZHENG Xu-qiang. A level-shifting circuit based on low-voltage rail-to-rail CMOS op-amp [J]. Journal of Central South University of Technology: Science and technology, 2010, 41(4): 1473–1478. (in Chinese)
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Foundation item: Project(10ZCKFGX00200) supported by the Tianjin Science and Technology Supporting Plan, China; Project supported by the Fundamental Research Funds for the Central Universities of China
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Liu, Yy., Geng, Wd. & Dai, Yp. OLED-on-silicon chip with new pixel circuit. J. Cent. South Univ. Technol. 19, 1276–1282 (2012). https://doi.org/10.1007/s11771-012-1139-6
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DOI: https://doi.org/10.1007/s11771-012-1139-6