• Title/Summary/Keyword: RGBW sub-pixel

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Color Saturation Improvement by the Use of Unequal-Area Color Filters for the RGBW LCD with RGB LED Backlit

  • Wen, Senfar
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1073-1076
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    • 2009
  • The dependences of color gamut size and power consumption on the area ratio of neutral and green sub-pixels for the RGBW LCD with RGB LED backlit are studied, in which the areas of red and blue sub-pixels are the same and are one quarter of pixel apertu re area. It is found that high color saturation and power saving can be achieved for the proposed RGBW LCD.

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Full-Color AMOLED with RGBW Pixel Pattern

  • Amold, A.D.;Hatwar, T.K.;Hettel, M.V.;Kane, P.J.;Miller, M.E.;Murdoch, M.J.;Spindler, J.P.;Slyke, S.A. Van;Mameno, K.;Nishikawa, R.;Omura, T.;Matsumoto, S.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.808-811
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    • 2004
  • A full-color AMOLED display with an RGBW color filter pattern has been fabricated. Displays with this format require about $^1/_2$ the power of analogous RGB displays. RGBW and RGB 2.16inch diagonal displays with average power consumptions of 180 mW and 340 mW, respectively, are demonstrated for a set of standard digital still camera images at a luminance of 100 cd/$m^2$. In both cases, a white-emitting AMOLED is used as the light source. The higher efficiency of the RGBW format results because a large fraction of a typical image can be represented as white, and the white sub-pixel in an RGBW AMOLED display is highly efficient because of the absence of any color filter. RGBW and RGB AMOLED displays have the same color gamut and, aside from the power consumption difference, are indistinguishable.

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Scene-adaptive RGBW conversion algorithms for RGBW LCDs

  • Baek, H.I.;Kwon, K.J.;Sohn, H.H.;Seo, C.R.;Chung, I.J.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1592-1594
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    • 2005
  • LCDs with an additional white sub-pixel (RGBW LCDs) have been developed mainly to achieve higher panel transmittance. However this RGBW pixel structure causes the perceptual color difference between RGBW and RGB LCDs due to decreased primary color luminance. To solve this problem, we proposed and developed RGBW conversion algorithms that function adaptively as a displayed image changes. The test results show that the perceptual color difference could be solved to some degree by applying these new algorithms.

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Development of the advanced transflective LCDs with high optical performance

  • Lee, Jong-Hwae;Park, Ku-Hyun;Kim, Hyun-Ho;Yoon, Jae-Kyung;Park, Ki-Bok;Shin, Hyun-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1330-1332
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    • 2007
  • We have newly developed transflective LCDs with a specific sub-pixel and the single cell gap structure. In our structure, the overall transmittance and reflectance has become higher than typical transflective LCDs. Furthermore, it can simplify the fabrication process of the transflective LCDs.

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