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Kwak, Youngshin
Color & Imaging Sciecne Lab
Research Interests
  • Color engineering, Affective engineering

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Generating vivid colors on red-green-blue-white electronic-paper display

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Title
Generating vivid colors on red-green-blue-white electronic-paper display
Author
Kwak, YoungshinPark, JuyongPark, Du-SikPark, Jae Byung
Issue Date
2008-09
Publisher
OPTICAL SOC AMER
Citation
APPLIED OPTICS, v.47, no.25, pp.4491 - 4500
Abstract
Color characteristics of an RGBW (red, green, blue, white) electrophoretic display (EPD) prototype developed by Samsung Electronics are analyzed. EPD shows strong crosstalk between subpixels because of both the fringe field between subpixels and the scattering phenomena at the display surface. An RGB-to-RGBW color-decomposition algorithm optimized to EPD characteristics is developed that compensates for color deterioration due to the fringe field and scattering phenomena. For the four-color-decomposition algorithm, white is added to the primary colors to enhance the reflectance of the vivid colors while minimizing chroma loss. The psychophysical experimental result shows that images rendered with the algorithms developed in this study are preferred more than 90% of the time over those rendered with algorithms from previous studies. This research proves that, in spite of the limited physical property of EPD, the color quality can be improved dramatically through the use of well-designed color-rendering algorithms.
URI
https://scholarworks.unist.ac.kr/handle/201301/8383
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=57049122743
DOI
10.1364/AO.47.004491
ISSN
1559-128X
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BME_Journal Papers
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