System considerations for RGBW OLED displays

Spindler, Jeffrey P.; Hatwar, T. K.; Miller, Michael E.; Arnold, Andrew D.; Murdoch, Michael J.; Kane, Paul J.; Ludwicki, John E.; Alessi, Paula J.; Slyke, Steven A. Van

doi:10.1889/1.2166833

Cited by 31 publications

(20 citation statements)

References 6 publications

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“…a-Si RGBW HDTV with 500-nits peak luminance, no polarizer, and a color temperature of 10,000K (0.28, 0.29), using wide gamut CFAs. 15 Over the same time period, the power consumption was reduced by 60%. The inverse relationship of power efficiency and power consumption is graphically illustrated in Fig.…”

Section: Fluorescent Tandem White Oleds For Displaymentioning

confidence: 99%

Fluorescent‐based tandem white OLEDs designed for display and solid‐state‐lighting applications

Spindler¹,

Hatwar²

2009

J Soc Info Display

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Abstract— Highly efficient tandem white OLEDs based on fluorescent materials were developed for display and solid‐state‐lighting (SSL) applications. In both cases, the white OLED must have high power efficiency and long lifetime, but there are a number of attributes unique to each application that also must be considered. Tandem OLED technology has been demonstrated as an effective approach to increase luminance, extend OLED lifetime, and allow for use of different emitters in the individual stacks for tuning the emission spectrum to achieve desired performance. Here, examples of bottom‐emission tandem white OLEDs based on small‐molecule fluorescent emitters designed for displays and for SSL applications are reported. A two‐stack tandem white OLED designed for display applications achieved 36.5‐cd/A luminance efficiency, 8500K color temperature, and lifetime estimated to exceed 50,000 hours at 1000 cd/m2. This performance is expected to meet the specifications for large AMOLED displays. A two‐stack tandem white OLED designed for SSL applications achieved 20‐lm/W power efficiency, 38‐cd/A luminance efficiency, 3500K color temperature, and lifetime estimated to exceed 140,000 hours at 1000 cd/m2. With the use of proven light‐extraction techniques, it is estimated that this tandem device will exceed 40 lm/W with more than 500,000‐hour lifetime, performance that should be sufficient for first‐generation lighting products.

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Section: Fluorescent Tandem White Oleds For Displaymentioning

confidence: 99%

Fluorescent‐based tandem white OLEDs designed for display and solid‐state‐lighting applications

Spindler¹,

Hatwar²

2009

J Soc Info Display

Self Cite

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“…Alternately, the CF usually decrease the luminous efficiency of WOLED device and cause lifetime worse. Therefore, the RGBW configuration was proposed and W sub-pixel is evaporated to improve the luminous efficiency of those AMOLED display [1]. The WOLED device is usually structured with tandem colors of OLED device [2].…”

Section: Introductionmentioning

confidence: 99%

38.2: A methodology of white color correction for RGBW configuration of AMOLED display

Yang¹,

Cheng²,

Li³

et al. 2019

Symp Digest of Tech Papers

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Current Large‐sized or ultra‐high PPI AMOLED panel is evaporated with common mask and use white OLED (WOLED) device to achieve light emitting. The tandem OLED device is its lighting source so that its various luminous efficiency cause CIE‐xy deviation with various driving voltage. The white mixing ratio (WMR) is utilized to adjust power saving and tune vivid color perception for the RGBW display. A white tuning algorithm is required to improve white accuracy and consider adjustable WMR parameter to achieve consistent brightness. The paper proposes an iterative method to achieve a similar white color temperature. Separated mixing ratio of RGB sub‐pixels is used to control the minus amount of primary colors in the RGBW conversion. In our experiment, proposed method efficiently is implemented to perform a target white with multiple WMR selections.

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“…Similarly, the use of a red, green, blue, and white (RGBW) subpixel array provides many advantages over the use of the more familiar red, green, and blue (RGB) subpixel array when forming OLED displays from a white emitter and color filters. Among these advantages is a factor of 2 or larger reduction in power consumption [1,2], depending upon the color filters that are applied for the RGB subpixels and the images displayed. Further, the use of both a white and a green high-luminance subpixel within the repeating pattern provides the potential for increasing the spatial resolution of the device [3] and if performed correctly, this gain in spatial resolution can be achieved without a significant increase in power consumption [4,5].…”

Section: Introductionmentioning

confidence: 99%

62.3: Exploiting the Flexibility of RGBW OLED Displays: Trading Color Saturation for Power

Miller

Hamer

Ludwicki

et al. 2009

Symp Digest of Tech Papers

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System considerations for RGBW OLED displays

Cited by 31 publications

References 6 publications

Fluorescent‐based tandem white OLEDs designed for display and solid‐state‐lighting applications

Fluorescent‐based tandem white OLEDs designed for display and solid‐state‐lighting applications

38.2: A methodology of white color correction for RGBW configuration of AMOLED display

62.3: Exploiting the Flexibility of RGBW OLED Displays: Trading Color Saturation for Power

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