Ultra-thick inkjet-printed quantum dots layer for full-color micro-LED displays DOI Creative Commons
Yonghong Lin, Wenjun Huang,

Mengyuan Zhanghu

и другие.

Optics Express, Год журнала: 2023, Номер 31(20), С. 31818 - 31818

Опубликована: Авг. 22, 2023

Micro-LEDs have promising development potential in display applications because of their outstanding performance. Achieving a full-color based on micro-LEDs is one the most important issues commercial applications. In this paper, an effective method quantum dots and blue was developed. Using etching method, thick black matrix fabricated to reduce crosstalk form bank for dots. Quantum were deposited using inkjet printing technology. With micro-LEDs, inkjet-printed dot films can realize color conversion. The integrated red/green achieve displays without filters, light leakage conversion film be reduced by themselves. results suggest that are way micro-LED displays.

Язык: Английский

Nanoporous Organic Frameworks as Light-Emitting Diodes: A Review DOI
Elissa O. Shehayeb, Vonika Ka‐Man Au

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(16), С. 18655 - 18675

Опубликована: Янв. 29, 2024

The exponential increase in the use of mobile phones and portable devices has led to a greater demand for cheap lightweight yet efficient light-emitting diodes (LEDs). With significant research interest nanoporous organic frameworks, including metal–organic covalent hydrogen-bonded frameworks (MOFs, COFs, HOFs), their applications electronics, particularly as LEDs, have been growing. This review summarizes main MOFs, HOFs applied LEDs that reported past 10 years. studies are mainly classified depending on types precursors involved, so provide insight into predesignable approach based these can later be commercialized integrated industry technology.

Язык: Английский

Процитировано

4

Series-Biased Micro-LED Array for Lighting, Detection, and Optical Communication DOI Creative Commons
Fang Qian,

Xiaoxiao Feng,

Huiping Yin

и другие.

Nanomaterials, Год журнала: 2024, Номер 14(3), С. 307 - 307

Опубликована: Фев. 3, 2024

Micro-LED arrays exhibit high brightness, a long lifespan, low power consumption, and fast response speed. In this paper, we have proposed series-biased micro-LED array by using nitride layer with multi-quantum wells epitaxial on sapphire substrate. The III-nitride multiple quantum serving as the active material enable both luminescence detection functionalities. combines lighting, detection, communication capabilities. We conducted thorough analysis of array’s optoelectronic features in lighting modes. also explore visible light performance across different arrangements single devices within array. Our research achieves 720p video transmission via array, supporting rate up to 10 Mbps. contributions encompass successful integration functions comprehensive assessment performance. This study highlights multifunctional potential transceiver terminal systems, expanding its applications from smart photonic integrated chips. These innovations enhance our understanding technology versatile applications.

Язык: Английский

Процитировано

4

Active-Matrix Array Based on Thin-Film Transistors Using Emerging Materials for Application: From Lab to Industry DOI Open Access
Seongjae Kim, Hocheon Yoo

Electronics, Год журнала: 2024, Номер 13(1), С. 241 - 241

Опубликована: Янв. 4, 2024

The active-matrix technology incorporates a transistor to exert precise control over each pixel within array, eliminating the issue of crosstalk between neighboring pixels that is prevalent in passive-matrix approach. Consequently, method facilitates realization high-resolution arrays, and this inherent advantage has propelled its widespread adoption, not only display applications but also diverse sensor arrays from lab industry. In comprehensive review, we delve into instances utilizing thin-film transistors (TFTs) leverage emerging materials such as organic semiconductors, metal oxide two-dimensional materials, carbon nanotubes (CNTs). Our examination encompasses broad classification research two main categories: (i) displays (ii) sensors. We assess performance TFTs based on framework, explore evolving trends directions active-matrix-based

Язык: Английский

Процитировано

3

Performance improvement of blue light micro-light emitting diodes (< 20 μm) by neutral beam etching process DOI Creative Commons
Yu-Hsuan Hsu,

Yun-Cheng Hsu,

Chien‐Chung Lin

и другие.

Materials Today Advances, Год журнала: 2024, Номер 22, С. 100496 - 100496

Опубликована: Май 11, 2024

In this study, micro-light emitting diodes array (μLEDs) with dimensions of 5 μm and 15 chip size were fabricated using Neutral Beam Etching (NBE) processes. Size-dependent issues μLEDs processed by traditional inductively coupled plasma-reactive ion etching (ICPRIE) alleviated NBE technology, which exhibited lower equivalent resistance, turn-on voltage, Ideality factor as compared those ICPRIE. Additionally, higher light output power both resulted in EQE 7.6 % 7.7 than Furthermore, the effect led to a decrease EQEmax values ICPRIE sample 0.4 %, but only 0.1 decay NBE. Overall, samples process superior optoelectronic characteristics. Finally, non-radiative recombination behaviors on mesa sidewall verified cathodoluminescence analysis, showing significant not samples. These results demonstrated potential for fabricating small sizes blue-light required high-brightness, high-efficiency, high-resolution μLED displays.

Язык: Английский

Процитировано

3

Advances in InGaN-based RGB micro-light-emitting diodes for AR applications: Status and perspective DOI Creative Commons
Panpan Li, Jacob Ewing, Matthew S. Wong

и другие.

APL Materials, Год журнала: 2024, Номер 12(8)

Опубликована: Авг. 1, 2024

Micro-light-emitting diodes (µLEDs) are gathering significant interest as a technology for emerging micro-displays. However, µLEDs encounter numerous obstacles, including size-dependent efficiency loss, poor of red µLEDs, and challenges associated with the mass transfer integration full-color µLEDs. These issues become more acute in ultra-small (&lt;5 µm), which were required by augmented reality (AR) displays. Here, we discuss principal faced explore possible solutions. We highlight recent advances InGaN-based RGB tailored AR In particular, advancements InGaN scaled down to 1 µm, developments implementation tunnel junction-based cascaded monolithic integration.

Язык: Английский

Процитировано

3

Printing quantum dot color conversion layer in etch pits using EHD technology based on mini-LED DOI
Xinyi Wang, Z. Chen,

Haojie Zhou

и другие.

Applied Physics Letters, Год журнала: 2025, Номер 126(1)

Опубликована: Янв. 3, 2025

The rapid development of display technologies has boosted the demand for efficient and high-resolution color conversion techniques. However, conventional approaches such as photolithography inkjet printing are constrained by limitations in pixel size material compatibility, making it difficult to meet demands industrialization. Due low luminescence efficiency red quantum dot (QD) material, an innovative (QDCC) layer structure was proposed this study. QD film prepared pits below glass surface using electrohydrodynamic printing, thus integrating into substrate. This results a more vivid accurate full-color display. indicate that fabricated QDCC achieves 216 × 116 μm2, with maximum external (EQE) 5.81% luminance 1 315 205 cd/m2. To improve performance device, transparent photoresist used leveling between LEDs substituted black photoresist. Although EQE changes 3.93% 206 038 cd/m2, coordinates move closer region, changing from (0.4396, 0.2089) (0.4786, 0.2258). method significantly not only reduces thickness weight but also improves its performance. research lays foundation high-performance displays, paving way ultra-thin energy-efficient technologies.

Язык: Английский

Процитировано

0

Laser In Situ Synthesis of Wide Bandgap Tunable Perovskite and Its Application in Micro‐LEDs DOI Open Access
Rongrong Xu,

Qianxi Yin,

J. Q. You

и другие.

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Abstract Laser patterning of perovskite is a novel technology with the advantages high speed, programmability, and maskless, which ideal for fabricating micro light‐emitting diodes (micro‐LED) color conversion layers (CCL). This work reports method laser in situ synthesis wide bandgap tunable an emission spectrum from 475 to 667 nm. Based on photonic effect continuous wave (CW) thermal quenching phenomenon perovskite, ultra‐high precision minimum linewidth 750 nm maximum dot‐pixel per inch (PPI) 5684 achieved. More importantly, significant improvements stability integration red‐green dual‐color dot arrays are achieved through in‐depth studies polymer matrices precursor solvents. The integrated using blue micro‐LED chips, great impetus research full‐color displays, also successfully excited.

Язык: Английский

Процитировано

0

Design of a Low Power LED Driver with Adjustable LDO DOI

Binjie Shi,

Zhenglin Li, Fang Hao

и другие.

Microelectronics Journal, Год журнала: 2025, Номер unknown, С. 106622 - 106622

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

The crosstalk in full color micro-LED displays DOI
Yonghong Lin,

Yanzhen Yin,

Fengchen Zhang

и другие.

Optics Letters, Год журнала: 2025, Номер 50(8), С. 2530 - 2530

Опубликована: Март 10, 2025

To achieve full-color micro-LED displays using color conversion methods, the effects of three-color cross talk and blue-light on layer were investigated. A light simulation was used to analyze caused by different pixel banks, comparing banks made from ordinary photoresist black photoresist. Various factors contributing also examined. The influence divergence angle blue structure for analyzed through simulations. Furthermore, potential solutions mitigate explored.

Язык: Английский

Процитировано

0

Polarized Color Filters Using Colloidal Quantum Rod Nanocrystals for Advanced High‐Performance Displays DOI Creative Commons
Jianxin Song, Maksym F. Prodanov, Yiyang Gao

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Abstract In this article, color filters (CFs) emitting linearly polarized light, achieving both full‐color and pixel‐level precision, which can simultaneously offer high saturation, ambient contrast ratio (ACR), efficiency for modern displays, are disclosed. The quantum rods (QRs) exhibit a narrow‐band emission that effectively mitigates traditional challenges of purity light losses. Specially designed ligands on the QR surfaces allow higher load material into polymer matrix with uniform alignment. Optimizing inkjet printing, photolithography, photoalignment processes, remarkable degree polarization (DOP) 0.65 is achieved precisely patterned red green CFs. Due to unidirectionally aligned QRs, liquid crystal display (LCD) equipped QRCF shows enhanced ACR, highlighting advantages their application in next‐generation displays over other types photoluminescence

Язык: Английский

Процитировано

0