High-Performance Color-Converted Full-Color Micro-LED Arrays

Kim, Wonhee; Jang, Young Jae; Kim, Ja-Yeon; Han, Myung-Soo; Kang, Min-Jae; Yang, Kiyong; Ryou, Jae‐Hyun; Kwon, Min‐Ki

doi:10.3390/app10062112

Cited by 23 publications

(13 citation statements)

References 17 publications

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“…And we believe this can scale down to more than 3000 ppi Silicon Display. It should also be added that other materials, such as nano‐organic colour conversion materials 28 have been actively studied, and they can also be promising candidates for the colour converters.…”

Section: Resultsmentioning

confidence: 99%

High‐resolution and high‐brightness full‐colour “Silicon Display” for augmented and mixed reality

Kawanishi¹,

Onuma²,

Maegawa³

et al. 2020

J Soc Info Display

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High‐brightness micro‐LED display bonded onto silicon backplane has been successfully demonstrated. The 0.38‐inch full‐colour active matrix LED microdisplay system consists of 352 × 198 pixels. Each pixel is 24 μm square composed of red, green, and blue (RGB) subpixels corresponding to a pixel resolution of 1053 ppi. Quantum‐dot materials are formed on III‐nitride blue micro‐LED array to convert blue light into red and green for full‐colour operation. We have confirmed that this microdisplay, which we call “Silicon Display” has wide colour gamut exceeding 120% of sRGB. We describe the advantage of this colour‐converting approach for the full‐colour micro‐LEDs. Progress toward higher resolution is also described. Brightness of more than 30 000 cd/m2 has been confirmed at a driving current density of 4 A/cm2 for 3000 ppi blue monochrome micro‐LED prepared for full‐colour Silicon Display. We believe our “Silicon Display” is ideally suited for near‐to‐eye displays for augmented and mixed reality.

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Section: Resultsmentioning

confidence: 99%

High‐resolution and high‐brightness full‐colour “Silicon Display” for augmented and mixed reality

Kawanishi¹,

Onuma²,

Maegawa³

et al. 2020

J Soc Info Display

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“…Therefore, a stable, low cost, high resolution, uniform, and patternable deposition technology is required. In 2020, Kim et al proposed to deposit a color conversion layer of 33 made of a mixture of light-cured acrylic and nano-organic color conversion materials onto a blue micro-LED through traditional photolithography technology to achieve a full-color display [91]. Through traditional photolithography technology, the conversion material was accurately deposited onto each sub-pixel, and the position, size, thickness, and patterning of the color conversion layer was able to be controlled.…”

Section: Other Color Conversion Technologiesmentioning

confidence: 99%

“…In addition, to avoid color crosstalk between each sub-pixel, a black matrix is also deposited between the blue micro-LED chips using photolithography. materials onto a blue micro-LED through traditional photolithography technology to achieve a fullcolor display [91]. Through traditional photolithography technology, the conversion material was accurately deposited onto each sub-pixel, and the position, size, thickness, and patterning of the color conversion layer was able to be controlled.…”

Section: Other Color Conversion Technologiesmentioning

confidence: 99%

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Full-Color Realization of Micro-LED Displays

et al. 2020

Nanomaterials

140

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Emerging technologies, such as smart wearable devices, augmented reality (AR)/virtual reality (VR) displays, and naked-eye 3D projection, have gradually entered our lives, accompanied by an urgent market demand for high-end display technologies. Ultra-high-resolution displays, flexible displays, and transparent displays are all important types of future display technology, and traditional display technology cannot meet the relevant requirements. Micro-light-emitting diodes (micro-LEDs), which have the advantages of a high contrast, a short response time, a wide color gamut, low power consumption, and a long life, are expected to replace traditional liquid-crystal displays (LCD) and organic light-emitting diodes (OLED) screens and become the leaders in the next generation of display technology. However, there are two major obstacles to moving micro-LEDs from the laboratory to the commercial market. One is improving the yield rate and reducing the cost of the mass transfer of micro-LEDs, and the other is realizing a full-color display using micro-LED chips. This review will outline the three main methods for applying current micro-LED full-color displays, red, green, and blue (RGB) three-color micro-LED transfer technology, color conversion technology, and single-chip multi-color growth technology, to summarize present-day micro-LED full-color display technologies and help guide the follow-up research.

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“…How to achieve full-color micro-LED displays has attracted a lot of attention. RGB method and color-conversion method are two major methods for full-color displays [5]. The RGB method combines blue, green and red micro-LEDs to achieve full-color displays.…”

Section: Introductionmentioning

confidence: 99%

P‐60: Printable Quantum‐Dot Photopolymers as Color‐Conversion Layers for MicroLED Displays

Lin

Yang

Zhanghu

et al. 2021

Symp Digest of Tech Papers

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A quantum dots photopolymers color‐conversion layer is demonstrated. The black matrix is fabricated on glass substrate using photolithography process. The red and green quantum dots photopolymers are deposited into the black matrix by inkjet printing. It is found that the optimized quantum dots photopolymers viscosity could form uniform thin films, which can achieve full color under the excitation of the blue micro‐LEDs.

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High-Performance Color-Converted Full-Color Micro-LED Arrays

Cited by 23 publications

References 17 publications

High‐resolution and high‐brightness full‐colour “Silicon Display” for augmented and mixed reality

High‐resolution and high‐brightness full‐colour “Silicon Display” for augmented and mixed reality

Full-Color Realization of Micro-LED Displays

P‐60: Printable Quantum‐Dot Photopolymers as Color‐Conversion Layers for MicroLED Displays

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