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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 6, Iss. 7 — Jul. 1, 2010
  • pp: 269–278

A PDM-Based Digital Driving Technique Using Delta-Sigma ($\Delta \Sigma $) Modulation for QVGA Full-Color AMOLED Display Applications

Jae Hyuk Jang, Minho Kwon, Edwin Tjandranegara, Kwyro Lee, and Byunghoo Jung

Journal of Display Technology, Vol. 6, Issue 7, pp. 269-278 (2010)


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Abstract

We propose a digital driving technique using pulse-density modulation (PDM) for an active-matrix organic light-emitting diode (AMOLED) to effectively suppress the false image contour in conventional pulsewidth modulation (PWM) while achieving considerably low operating frequency. A compact first-order digital $\Delta \Sigma $ modulator provides the PDM signal to the panel. A 2.2-inch QVGA AMOLED system using the proposed technique shows no false image contour problem while allowing relaxed minimum gate scan time.

© 2010 IEEE

Citation
Jae Hyuk Jang, Minho Kwon, Edwin Tjandranegara, Kwyro Lee, and Byunghoo Jung, "A PDM-Based Digital Driving Technique Using Delta-Sigma ($\Delta \Sigma $) Modulation for QVGA Full-Color AMOLED Display Applications," J. Display Technol. 6, 269-278 (2010)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-6-7-269

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