Unidirectional-emitting GaN-based micro-LED for 3D display

Huang, Jinpeng; Hu, Zhengyan; Gao, Xiang; Xu, Yi; Wang, Liancheng

doi:10.1364/ol.430021

Cited by 28 publications

(16 citation statements)

References 11 publications

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“…The device could generate unidirectional emission at arbitrary sole or dual angles, which had considerable potential for use in a naked-eye 3D micro-LED display. [97] Ye et al introduced the design of an HRTF layer on the surface of the micro-LED chip. The emission from the sidewall due to the partial reflection caused the FWHM of the light distribution of the micro-LED with the HRTF coating to increase from 135°to 165°, as shown in Figure 8c.…”

Section: Optimization For Architecture Designmentioning

confidence: 99%

Microdisplays: Mini‐LED, Micro‐OLED, and Micro‐LED

Miao

Hsiao

Sheng

et al. 2023

Advanced Optical Materials

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The field of next‐generation microdisplays is flourishing. Relevant display technologies, such as mini‐light emission diodes (mini‐LEDs), micro‐organic light emission diodes (micro‐OLEDs), and micro‐light emission diodes (micro‐LEDs) are thus in the urgent stage of development. From this perspective, comprehensive and systematical analyzes are conducted for the aforesaid microdisplay configurations. A holistic view of microdisplay technologies is developed with the corresponding performance metrics, providing a path for miscellaneous scenarios. Among these scenarios, the applications in augmented reality (AR), virtual reality (VR), wearable devices, and head‐up displays (HUD) are currently attracting considerable attention for deeper human‐digital interactions. However, there is a multiplicity of obstacles and challenges hindering such development. Nevertheless, recent advances in microdisplay technologies hold tremendous promise for the paradigms of these applications, taking a leap forward for next‐generation microdisplays. This review presents perspectives, relevant materials, and the technology landscape for such ongoing display technologies, offering guidance on the design of advanced microdisplays.

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Section: Optimization For Architecture Designmentioning

confidence: 99%

Microdisplays: Mini‐LED, Micro‐OLED, and Micro‐LED

Miao

Hsiao

Sheng

et al. 2023

Advanced Optical Materials

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“…The integrated metalens can negate TIRs and shape the distribution of the emitted light, thereby contributing to the improvement of the outcoupling efficiency. Consequently, metalens -integrated LEDs are directional, efficient and compact light sources, which are of particular importance for augmented reality and virtual reality displays 26 , 38 . Most metalenses employ ‘high- n ’ nanostructured units to cover the full range of 2π phase retardation with minimal plasma etching (Fig.…”

Section: Light Emission Devicesmentioning

confidence: 99%

High-index-contrast photonic structures: a versatile platform for photon manipulation

et al. 2022

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In optics, the refractive index of a material and its spatial distribution determine the characteristics of light propagation. Therefore, exploring both low- and high-index materials/structures is an important consideration in this regard. Hollow cavities, which are defined as low-index bases, exhibit a variety of unusual or even unexplored optical characteristics and are used in numerous functionalities including diffraction gratings, localised optical antennas and low-loss resonators. In this report, we discuss the fabrication of hollow cavities of various sizes (0.2–5 μm in diameter) that are supported by conformal dielectric/metal shells, as well as their specific applications in the ultraviolet (photodetectors), visible (light-emitting diodes, solar cells and metalenses), near-infrared (thermophotovoltaics) and mid-infrared (radiative coolers) regions. Our findings demonstrate that hollow cavities tailored to specific spectra and applications can serve as versatile optical platforms to address the limitations of current optoelectronic devices. Furthermore, hollow cavity embedded structures are highly elastic and can minimise the thermal stress caused by high temperatures. As such, future applications will likely include high-temperature devices such as thermophotovoltaics and concentrator photovoltaics.

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“… – 20 Fortunately, the color conversion technology using monochrome micro-LED array as light source also provides an effective method for micro-LED full-color display 21 – 24 RGB color-conversion materials are needed to achieve the RGB three primary colors if using the ultraviolet (UV) micro-LED, while only red and green color-conversion materials are required if using the blue micro-LED. Generally, color-conversion materials can be divided into the phosphor and the quantum dots (QDs) 25 .…”

Section: Introductionmentioning

confidence: 99%

Patternable quantum dot color conversion film based on photolithography technique

Huang¹,

Zha

Chen

et al. 2023

Opt. Eng.

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This paper presents a patternable two-color quantum dot (QD) color conversion film based on photolithography technique. Toluene-assisted dispersion of QD powder with the best performance matching was selected from four typical dispersions by experimental comparison. On this basis, the color conversion film of QD was prepared by photolithography technique. The experimental results show that the height of the patternable QD microstructures has good consistency. At the same time, the monochromatic spectrum test shows that the spectral characteristics of QDs are not significantly affected by the photolithographic process. Therefore, the preparation methods described in this paper can provide a reference for related research.

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Unidirectional-emitting GaN-based micro-LED for 3D display

Cited by 28 publications

References 11 publications

Microdisplays: Mini‐LED, Micro‐OLED, and Micro‐LED

Microdisplays: Mini‐LED, Micro‐OLED, and Micro‐LED

High-index-contrast photonic structures: a versatile platform for photon manipulation

Patternable quantum dot color conversion film based on photolithography technique

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