scholarly journals Transfer-printed, tandem microscale light-emitting diodes for full-color displays

2021 ◽  
Vol 118 (18) ◽  
pp. e2023436118
Author(s):  
Lizhu Li ◽  
Guo Tang ◽  
Zhao Shi ◽  
He Ding ◽  
Changbo Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Light Emitting Diodes ◽  
Performance Enhancement ◽  
Optical Filter ◽  
Transfer Printing ◽  
Light Emitting ◽  
Full Color ◽  
Color Displays ◽  
Film Dielectric ◽  
Display Systems

Inorganic semiconductor-based microscale light-emitting diodes (micro-LEDs) have been widely considered the key solution to next-generation, ubiquitous lighting and display systems, with their efficiency, brightness, contrast, stability, and dynamic response superior to liquid crystal or organic-based counterparts. However, the reduction of micro-LED sizes leads to the deteriorated device performance and increased difficulties in manufacturing. Here, we report a tandem device scheme based on stacked red, green, and blue (RGB) micro-LEDs, for the realization of full-color lighting and displays. Thin-film micro-LEDs (size ∼100 μm, thickness ∼5 μm) based on III–V compound semiconductors are vertically assembled via epitaxial liftoff and transfer printing. A thin-film dielectric-based optical filter serves as a wavelength-selective interface for performance enhancement. Furthermore, we prototype arrays of tandem RGB micro-LEDs and demonstrate display capabilities. These materials and device strategies provide a viable path to advanced lighting and display systems.

Efficient pure-red perovskite light-emitting diodes using dual-Lewis-base molecules for interfacial modification

2021 ◽  
Author(s):  
Rui Yang ◽  
Yanqing Li ◽  
Minglei Guo ◽  
Xiao-Yi Cai ◽  
Jianxin Tang
Keyword(s):  
Light Emitting Diodes ◽  
Low Cost ◽  
Lewis Base ◽  
Color Purity ◽  
Light Emitting ◽  
Full Color ◽  
Color Displays ◽  
Interfacial Modification ◽  
High Color Purity

Perovskite light-emitting diodes (PeLEDs) are promising for full-color displays due to high color purity, low-cost and solution processability. However, pure-red PeLEDs still lag behind their green and deep-red counterparts in...

Recent development of phenanthroimidazole-based fluorophores for blue organic light-emitting diodes (OLEDs): an overview

2018 ◽  
Vol 6 (38) ◽  
pp. 10138-10173 ◽  
Author(s):  
Jairam Tagare ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Full Color ◽  
Organic Light ◽  
Color Displays ◽  
White Oleds

Full color displays (white OLEDs) require all the primary colors: blue, green, and red. In recent decades, numerous phenanthroimidazole-based emitting materials have been developed for efficient blue OLEDs.

Quantum-Dot and Organic Hybrid Tandem Light-Emitting Diodes with Color-Selecting Intermediate Electrodes for Full-Color Displays

Nanoscale ◽  
2021 ◽  
Author(s):  
Heng Zhang ◽  
Lianna Chen ◽  
Shuming Chen
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Hybrid ◽  
Full Color ◽  
The Poor ◽  
Color Displays ◽  
Poor Stability ◽  
Color Patterning

The immaturity of color patterning technology and the poor stability of blue (B) quantum-dots are two of the challenges that restrict the development of quantum-dot electroluminescence displays. In this work,...

scholarly journals Full-Color Realization of Micro-LED Displays

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2482
Author(s):  
Yifan Wu ◽  
Jianshe Ma ◽  
Ping Su ◽  
Lijun Zhang ◽  
Bizhong Xia
Keyword(s):  
Light Emitting Diodes ◽  
Market Demand ◽  
Single Chip ◽  
Flexible Displays ◽  
Light Emitting ◽  
Color Display ◽  
Full Color ◽  
Color Displays ◽  
Wide Color Gamut ◽  
Display Technology

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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