Independent drive of integrated multicolor (RGBY) micro-LED array using regularly arrayed InGaN based nanocolumns

Sakakibara, Naoki; Narita, Kazuki; Oto, Takao; Kishino, Katsumi

doi:10.23919/moc.2017.8244514

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…14) So far, the most promising full nitride-based display has been reported in Refs. 15,16. By controlling the diameter and the pitch of their nanorods (NRs), the authors demonstrated the successful monolithic integration and independent drive of RGBY InGaN/GaN-based LEDs by MBE.…”

Section: Introductionmentioning

confidence: 99%

Monolithic integration of tricolor micro-LEDs and color mixing investigation by analog and digital dimming

Robin

Hemeret

D’Inca

et al. 2019

Jpn. J. Appl. Phys.

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We report on the growth, processing and optical characterization of monolithically integrated tricolor micro-LEDs. The 100 × 100 μm2 active area of the devices is composed of independent subpixels emitting in the blue, green and yellow–orange range with color saturation of over 90% for all bands. The gamut of the device is recorded by both digital and analog dimming, i.e. by pulse width modulation or by varying the current density. Results indicate color mixing performed by both methods leads to a rotated or distorted gamut significantly different from the one predicted by the CIE color model. We explain our findings in terms of quantum-confined Stark effect screening and efficiency droop at high current density, which modify the expected hue and brightness of mixed colors.

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Section: Introductionmentioning

confidence: 99%

Monolithic integration of tricolor micro-LEDs and color mixing investigation by analog and digital dimming

Robin

Hemeret

D’Inca

et al. 2019

Jpn. J. Appl. Phys.

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“…The preliminary experimental result of the device was reported in the conference. 34) See the supplementary material for the formation process of the matrix wiring electrode. However, the matrix wiring electrode will eventually not be utilized for NC μ-LED displays because the electrode system is not suitable for the fabrication of large-scale display panels including highdensity ultrafine pixels.…”

mentioning

confidence: 99%

Two-dimensional multicolor (RGBY) integrated nanocolumn micro-LEDs as a fundamental technology of micro-LED display

Kishino

Sakakibara

Narita

et al. 2019

Appl. Phys. Express

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The development of high-productivity microLED (μ-LED) pixel panels is crucial as a key technology for next-generation displays. To provide a fundamental approach to this end, in this study, multicolor (red, green, blue, and yellow; RGBY) nanocolumn (NC) μ-LED pixels with 5 × 5 μm2 emission windows were monolithically integrated to exhibit electroluminescence spectra with peak wavelengths of 478, 512, 559, and 647 nm, respectively. The NC μ-LED pixels, which were two-dimensionally arranged with a 10 μm period, were individually driven by the matrix wiring p- and n-electrodes, exhibiting a μ-LED pixel panel arrangement.

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Circuitry of multiplexer-on-chip system within the micro-LED array manufacturing CMOS substrate

Liou

2018

Opt Quant Electron

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Independent drive of integrated multicolor (RGBY) micro-LED array using regularly arrayed InGaN based nanocolumns

Cited by 3 publications

References 4 publications

Monolithic integration of tricolor micro-LEDs and color mixing investigation by analog and digital dimming

Monolithic integration of tricolor micro-LEDs and color mixing investigation by analog and digital dimming

Two-dimensional multicolor (RGBY) integrated nanocolumn micro-LEDs as a fundamental technology of micro-LED display

Circuitry of multiplexer-on-chip system within the micro-LED array manufacturing CMOS substrate

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