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

Abstract

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.

Atomic-scale stress modulation of nanolaminate for micro-LED encapsulation

“…2 They are capable of providing high resolution and excellent color saturation, making them particularly suitable for AR and VR applications. 3,4 However, challenges arise as the size of these devices decreases, with the edge effect becoming prominent and impacting the overall luminescence of micro-LEDs. 5,6 Additionally, optical cross-talk in adjacent pixels and the sensitivity of quantum dots to moisture become more pronounced at tiny sizes.…”

Enhancing the reliability of dyes for color filters through TiO2 adsorption: comprehensive identification of factors affecting photocatalysis

“…1–3 In recent years, its application has expanded to OLED TVs and other fields, necessitating additional research to improve the color filter performance. 4,5 Pigments and dyes are used as materials for color filters, with pigments excelling in reliability but having weak optical properties, and dyes displaying excellent optical properties but weaker reliability. 6,7 Although preliminary studies have been conducted to develop materials that combine the advantages of pigments and dyes, there are limitations in developing such materials due to their intrinsic properties.…”

Effect of grain coalescence on dislocation and stress in GaN films grown on nanoscale patterned sapphire substrates

“…In response to the growing demand for high-definition display technology, light-emitting diodes (LEDs) are constantly developing in the direction of miniaturization. 1–3 For display technologies like virtual reality (VR) and augmented reality (AR), micro-LEDs with chip sizes smaller than 5 μm are typically necessary. 4,5 However, the currently commercial microscale patterned sapphire substrates (MPSSs) exhibit pattern periods of approximately 3 μm, which already approach the chip sizes of micro-LEDs.…”