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Method of Patching Element Defects by Ink-Jet Printing for Polymer Light Emitting Diodes

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Abstract:

The innate character of ink-jet instability causes the device defect in manufacturing for polymer light emitting diodes (PLED). This study develops image process skill to identify defect location; these skills include the filtering, color processing, background subtraction, dilation etc. Combination with the defect information and the predetermined head library, the ink-jet amount to patch defects can be appropriately estimated. Besides, an optimal printing route has designed with a special head driving of pre-oscillation during motion intermission. By this methodology, a 60 pL drop size from ink jet nozzle can precisely patch the PLED panel with pixel resolution of 240*73 μm, the QCIF standard. This ink-jet manufacture skill use for patch defects can increase the yield rate on line.

Document Type: Research Article

Publication date: January 1, 2004

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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