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Journal of Display Technology

Journal of Display Technology


  • Vol. 8, Iss. 3 — Mar. 1, 2012
  • pp: 154–161

Detection of Physical Defects in Full Color Passive-Matrix OLED Display by Image Driving Techniques

Pankaj Kumar Uttwani, Boby Chaitanya Villari, K. N. Narayanan Unni, Ranbir Singh, Asha Awasthi, and Deepak

Journal of Display Technology, Vol. 8, Issue 3, pp. 154-161 (2012)

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Access to display pixels for the purpose of identification of a defect in a sealed display is difficult. Thus, it will be useful to investigate the physical defects in a passive-matrix organic light-emitting diode (PMOLED) display, such as electrically open anode or cathode, shorted anode or cathode or pixel short by driving the display as red, blue, green, white, or black image and observing the visual defects. In this paper, we associate a black horizontal line in a display with electrically open row, dark/dim horizontal line with shorted cathode, dead pixel or bright horizontal line or dark/dim vertical line with electrically shorted pixels and black vertical line with either electrically short or open anode. Further, we find a pixel short to be a complicated defect which manifests itself in a display in several ways depending on the image displayed. For example, a short in red pixel will result in bright horizontal line in a blue or green image but not in red image and its behavior in white or black image will be entirely different. However, by clearly understanding the cause of appearance of a defect, we also demonstrate that by a specific driving methodology, it is possible to identify a physical defect. We have used SPICE simulation to support the physical observations.

© 2012 IEEE

Pankaj Kumar Uttwani, Boby Chaitanya Villari, K. N. Narayanan Unni, Ranbir Singh, Asha Awasthi, and Deepak, "Detection of Physical Defects in Full Color Passive-Matrix OLED Display by Image Driving Techniques," J. Display Technol. 8, 154-161 (2012)

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  1. J. Shinar, Organic Light Emitting Devices: A Survey (Springer-Verlag, 2004).
  2. F. So, Organic Electronic Material, Processing, Devices and Applications (CRC, 2010).
  3. G. Gu, S. R. Forrest, "Design of flat-panel displays based on organic light-emitting devices," IEEE J. Sel. Top. Quantum Electron. 4, 83-99 (1998).
  4. H. Kanno, Y. Hamada, H. Takahashi, "Development of OLED with high stability and luminance efficiency by co-doping methods for full color displays," IEEE J. Sel. Top. Quantum Electron. 10, 30-36 (2004).
  5. J. N. Bardsley, "International OLED technology roadmap," IEEE J. Sel. Top. Quantum Electron. 10, 3-9 (2004).
  6. E. C. Smith, "Total matrix addressing (TMA)," SID Int. Symp. Dig. Tech. Papers (2007) pp. 93-96.
  7. C. Xu, A. Karrenbaur, K. M. Soh, J. Wahl, "A New addressing scheme for PM OLED display," SID Int. Symp. Dig. Tech. Papers (2007) pp. 97-100.
  8. Deepak, "Development of passive matrix full color organic light emitting diode display," Proc. IWPSD '07 (2007) pp. 528-532.
  9. S. W. Kim, B. H. Hwang, J. H. Lee, J. I. Kang, K. W. Min, W. Y. Kim, "2.4-in. monochrome small molecular OLED display for mobile application," Current Appl. Phys. 2, 335-338 (2002).
  10. Y. Chang, M.-K. Wei, C.-M. Kuo, S.-J. Shich, J.-H. Lee, C.-C. Chen, "Manufacturing of passive matrix OLED- organic light emitting display," SID Int. Symp. Dig. Tech. Papers (2001) pp. 1040-1043.
  11. H. Kubota, S. Miyaguchi, S. Ishizuka, T. Wakimoto, J. Funaki, Y. Fukuda, T. Watanabe, H. Ochi, T. Sakamoto, T. Miyake, M. Tsuchida, "Organic LED full color passive matrix display," J. Lumin. 87–89, 56-60 (2000).
  12. Q. Niu, Y. Shao, W. Xu, L. Wang, S. Han, N. Liu, J. Peng, Y. Cao, J. Wang, "Full color and monochrome passive-matrix polymer light-emitting diodes flat panel displays made with solution processes," Org. Electron. 9, 95-100 (2008).
  13. Y.-S. Na, O.-K. Kwon, "A single chip driver system for 1.2-inch organic electro-luminescent display," IEEE Trans. Consum. Electron. 48, (2002).
  14. Z. H. Huang, G. J. Qi, X. T. Zenga, W. M. Su, "A method for undercut formation of integrated shadow mask used in passive matrix displays," Thin Solid Films 503, 246-249 (2006).
  15. K. Toyosawa, N. Nakamura, K. Fukuta, Y. Chikawa, "COF (Chip-On-Film) technology for LCD driver ICs using reel-to-reel system," Sharp Tech. J. 3, 56-59 (2001).
  16. G. Sarkar, S. Mridha, T. T. Chong, W. Y. Tuck, S. C. Kwan, "Flip chip interconnect using anisotropic conductive adhesive," J. Mater. Process. Technol. 89–90, 484-490 (1999).
  17. M. Kimura, Y. Kubo, "Analysis of bright Lines in passive-matrix OLEDs using high-speed photography," SID Int. Symp. Dig. Tech. Papers (2006) pp. 912-915.
  18. D. Braun, "Crosstalk in passive matrix polymer LED displays," Synth. Met. 92, 107-113 (1998).
  19. M. Kimura, Y. Kubo, "Analysis, detection and repair of pixel shorts in PM-OLEDs," Proc. IDW/AD '05 (2005) pp. 605-608.

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