62.2: Adaptive White Extension for Peak Luminance Increase in RGBWAMOLED

Arkhipov, Alexander; Park, Kyongtae; Lee, Baek‐woon; Kim, Chiwoo

doi:10.1889/1.3256951

Cited by 7 publications

(10 citation statements)

References 3 publications

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“…4). Finally, the digital code (a, b, c, d) for two luminance reproduction are calculated as (9) where L 0 , L 1 , and L 2 are luminance sampled continuously. This equation shows how one pixel can represent two different luminance values for an average luminance.…”

Section: Resolution Properties In Mpcmentioning

confidence: 99%

“…One of their well-known strengths is their flexibility for color-reproduction, so-called color reproduction redundancy. This characteristic leads to a number of applications for MPC display systems such as higher luminance reproduction, 9 wide viewing angles, 10 high light-use efficiency (i.e., low power consumption as a consequence), 11,12 and minimization of color variation caused by the individual characteristics of viewers. 13 In addition to these advantages based on MPC's colorreproduction redundancy, its potential of high-resolution representation in luminance domains is also well-known.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The luminance resolution characteristics of multi‐primary‐color display

Yoshida¹,

Nakagawa²,

Yoshida³

et al. 2011

J Soc Info Display

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In this paper, the resolution characteristics of multi-primary-color (MPC) display systems are analyzed. That four-primary-color (4PC) displays can increase the effective resolution for achromatic images in the luminance domain by a factor of two as compared to conventional RGB-based displays with MPC-specialized subpixel rendering, which is proposed in this paper, is demonstrated. Five-and six-primary-color (5PC and 6PC) display systems can reproduce denser luminance data than conventional RGB-based display systems and solve a problem of MPC displays, viz. an increase of production costs and a decrease in the aperture ratio caused by increasing the number of subpixels in one pixel. This is an essential advantage of MPC display systems, which is related to the combination of the proposed color-filter architecture and image processing. Thus, a completely new advantage of MPC display systems, in addition to their well-known capabilities of color reproduction and power saving, is proposed.

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Section: Resolution Properties In Mpcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The luminance resolution characteristics of multi‐primary‐color display

Yoshida¹,

Nakagawa²,

Yoshida³

et al. 2011

J Soc Info Display

View full text Add to dashboard Cite

show abstract

“…Figure (b) shows the RGBW layout in which the RGB sub‐pixels cannot be simultaneously driven to their maximum currents. That is because the W sub‐pixel will be used to produce partial or all of the luminance while displaying neutral colors . Therefore, the display power can be reduced.…”

Section: Introductionmentioning

confidence: 99%

“…That is because the W sub-pixel will be used to produce partial or all of the luminance while displaying neutral colors. 8,9 Therefore, the display power can be reduced. Figure 1(c) shows the RGBG layout that uses green sub-pixels interleaved with alternating red and blue sub-pixels.…”

Section: Introductionmentioning

confidence: 99%

An RGB to RGBG conversion algorithm for AMOLED panel

et al. 2017

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In this paper, an RGB‐to‐RGBG conversion algorithm based on the weighting factor (WF) has been proposed. The gray level of each RGBG sub‐pixel is represented by the weighted sum of the original gray levels. The weighting factors are adaptively calculated by minimizing the square error. Furthermore, the color fringing artifact is significantly improved by using this method. Peak signal‐to‐noise ratio of U component and peak signal‐to‐noise ratio of V component of the image processed by WF is larger than that processed by direct assignment and FRB. The mean square error of the image processed by the WF is 14% and 53% smaller than that of image processed by direct assignment and FRB, respectively. The proposed algorithm has been implemented on a field‐programmable gate array, and the displayed image has good visual effect.

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“…When a white backlight is projected through RGB colour filters (CFs), the overall optical efficiency of the system is low. Recent reports describe the improvements that can be achieved by the addition of a white sub‐pixel (WSP) to create a quad RGBW pixel. In a quad‐sub‐pixel architecture, three of the sub‐pixels are covered by the RGB CFs as before, and the WSP is covered by a transparent filter or no filter, thus allowing unfiltered transmission of the white illumination.…”

Section: Introductionmentioning

confidence: 99%

Compact and efficient RGB to RGBW data conversion method and its application in OLED microdisplays

Can

Underwood

2013

J Soc Info Display

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In many electronic information displays, a colour pixel comprises three spatially distinct sub‐pixels containing red, green and blue (RGB) colour filters. The option of adding a fourth white (W) sub‐pixel that allows light to pass through unfiltered can significantly improve the optical efficiency of the pixel that, in turn, increases the power efficiency of the display. Such a display is called an RGBW display, and the required transformation of data format from incoming RGB to pixel RGBW is termed as “RGB to RGBW conversion.” This paper reports a method of RGB to RGBW conversion that is highly compact and efficient in terms of system resources while retaining image quality. It processes incoming data through a new colour space conversion algorithm in order to reduce the average power consumption with no noticeable visual artefacts. We explain the method and demonstrate its cost‐effective and power‐effective implementation for the specific case of an organic light emitting diode microdisplay.

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62.2: Adaptive White Extension for Peak Luminance Increase in RGBWAMOLED

Cited by 7 publications

References 3 publications

The luminance resolution characteristics of multi‐primary‐color display

The luminance resolution characteristics of multi‐primary‐color display

An RGB to RGBG conversion algorithm for AMOLED panel

Compact and efficient RGB to RGBW data conversion method and its application in OLED microdisplays

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