High-resolution light-emitting devices for display applications

Zheng, Yang; Yu, Yongshen; Chen, Wei; Hu, Hailong; Guo, Tailiang; Li, Fushan

doi:10.1007/s40843-022-2410-4

Cited by 7 publications

(1 citation statement)

References 163 publications

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“…High-resolution (HR) displays are in much demand as metaverse makes near-eye displays the most important equipment in recent years. [1][2][3][4][5] A retina display, which means a display with a pixel density matching the human visual system, is necessary for an immersive experience. [6][7][8][9] Display devices are in urgent need of a much higher pixel density (≈10 000 pixels per inch [PPI]) to give a better immersion experience at a small object distance, corresponding to a pixel size in sub-microscale or even nanoscale.…”

Section: Introductionmentioning

confidence: 99%

Optical Crosstalk Suppression in High‐Resolution Quantum Dot Light‐Emitting Devices

Zheng,

Lin,

et al. 2024

Advanced Optical Materials

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High‐resolution (HR) displays are in much demand as metaverse makes near‐eye displays the most important equipment in recent years. Based on wave optics, a microscale optical crosstalk model for HR display devices is proposed. It is indicated that the pixel pattern will be distorted over long‐distance transmission in light‐emitting devices with inner periodic microstructure, and the optical distortion is related to the size of pixels and the distance from the emitting layer to the outlet. A bottom emissive HR red quantum dot light‐emitting diode (QLED) array is introduced to confirm the model and a top emission scheme is provided to effectively reduce the transmission distance and suppress the pixel distortion. Optical‐crosstalk‐free pixels are finally achieved by adopting the optimized top‐emission cathode thickness of 30 nm. This study provides a direction for realizing high‐quality and high‐resolution micro‐displays.

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Section: Introductionmentioning

confidence: 99%

Optical Crosstalk Suppression in High‐Resolution Quantum Dot Light‐Emitting Devices

Zheng,

Lin,

et al. 2024

Advanced Optical Materials

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The Key Role of Molecular Packing in Luminescence Property: From Adjacent Molecules to Molecular Aggregates

Liao,

Li,

2023

Advanced Materials

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The luminescence materials act as the key components in many functional devices, as well as the detection and imaging systems, which can be permeated in each aspect of modern life, and attract more and more attention for the creative technology and applications. In addition to the diverse properties of organic luminogens, the multiple molecular packing at aggregated states frequently offer new and/or exciting performance. However, there still lacks comprehensive analysis of molecular packing in these organic materials, resulting in an increased gap between molecular design and practical applications. In this review, from the basic knowledge of organic compounds as single molecules, to the discernable property of excimer, charge transfer (CT) complex or self‐assembly systems by adjacent molecules, and finally to the opto‐electronic performance of molecular aggregates, the relevant factors to the molecular packing and practical applications are discussed.This article is protected by copyright. All rights reserved

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Narrow‐Band Emission of Asymmetric 1,3‐Substituted Pyrene‐Based Deep‐Blue Emitters and Application in OLEDs

Liu,

Jin,

Zhang

et al. 2024

Advanced Optical Materials

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High‐efficiency organic blue light‐emitting materials with narrow‐band emission are fundamental components for constructing high color purity and high resolution in high‐performance organic light‐emitting diode (OLED) devices. Herein, new pyrene‐based blue emitters (8–10) with narrow‐band emission are synthesized by asymmetrically introducing biphenyl and triphenylamine units at the 1‐ and 3‐positions of pyrene, respectively. Due to the steric effect and through‐space conjugation, the synergistic effects of both groups not only boost these emitters 8–10 (CIEy < 0.11) with aggregation‐induced emission (AIE) characteristics and high fluorescence quantum yield (>0.68), but also endow narrow full width at half maxima (FWHM) emission (≤36 nm) in the crystallized state (FWHM ≤ 55 nm in the film state). The EL spectra of pyrene‐based 8–10 in nondoped OLEDs exhibit blue emission with a maximum emission (λmax em) in the range of 448–453 nm (CIEy ≤ 0.12). The compounds 8–10 in doped‐OLEDs show a blue emission with a λmax em in the range of 443–445 nm and CIEy ≤ 0.08, with FWHM emission of 57–61 nm. The compound 10‐based doped OLED displays an impressive EL performance with a maximum brightness of 9756 cd m−2 and a maximum external quantum efficiency of 2.58%.

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High-resolution light-emitting devices for display applications

Cited by 7 publications

References 163 publications

Optical Crosstalk Suppression in High‐Resolution Quantum Dot Light‐Emitting Devices

Optical Crosstalk Suppression in High‐Resolution Quantum Dot Light‐Emitting Devices

The Key Role of Molecular Packing in Luminescence Property: From Adjacent Molecules to Molecular Aggregates

Narrow‐Band Emission of Asymmetric 1,3‐Substituted Pyrene‐Based Deep‐Blue Emitters and Application in OLEDs

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