Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

Hsiang, En‐Lin; Yang, Zhiyong; Yang, Qian; Lan, Yi‐Fen; Wu, Shin‐Tson

doi:10.1002/jsid.1058

Cited by 181 publications

(120 citation statements)

References 168 publications

Supporting

Mentioning

104

Contrasting

Unclassified

Order By: Relevance

“…Laser Photonics Rev. 2022, 16,2100427 Abdur Rehman Anwar completed his master's degree in engineering sciences from Ghulam Ishaq Khan Institute of Engineering Sciences and Technology (GIK Institute), Topi, Swabi, Pakistan in 2020. He has won a GIK Institute Fellowship and Graduate Assistantship Award for master's studies from 2018 to 2020, and an Institutional Gold Medal Award (from GIK Institute) for the overall best academic performance of the institute by Dr. Arif Alvi, President of Pakistan.…”

Section: Conflict Of Interestmentioning

confidence: 99%

“…[15] In short, both technologies (LCDs and OLEDs) have some critical issues which need to be addressed for their successful utilization in future smart displays. [16,17] Recently, the inorganic material-based light-emitting diodes (LEDs) with the lateral dimension down to less than 100 μm × 100 μm (which is also called micro-LEDs) have attained much more attention for a display technology [18][19][20] due to their distinguished features such as lower power consumption (30-40% of LCD), longer life span, the quick response time (nanosecond level), and wide RGB color gamut. [21,22] In comparison to the already existing LCD, the micro-LED display has a ten times faster response rate, 1.4 times broader color gamut, and 3.5 times higher contrast ratio.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recent Progress in Micro‐LED‐Based Display Technologies

Sajjad

Johar

Hernández-Gutiérrez

et al. 2022

Laser & Photonics Reviews

138

View full text Add to dashboard Cite

The demand for high-performance displays is continuously increasing because of their wide range of applications in smart devices (smartphones/watches), augmented reality, virtual reality, and naked eye 3D projection. High-resolution, transparent, and flexible displays are the main types of display to be used in future. In the above scenario, the micro-LEDs (light-emitting diodes) display which has outstanding features, such as low power consumption, wider color gamut, longer lifetime, and short response-time, can replace traditional liquid crystal displays and organic LEDs-based display technologies. However, to attain a remarkable position in future display technology, the micro-LEDs need to overcome problems associated with mass transfer and its high cost of manufacturing. Besides micro-LEDs, the other option for future displays includes the usage of color conversion medium (phosphor/ quantum dots) to convert some of the blue light into other colors. In this review, the various mass transfer display technologies and color conversion strategies which are being used for the realization of a full-color display are discussed.

show abstract

Section: Conflict Of Interestmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Progress in Micro‐LED‐Based Display Technologies

Sajjad

Johar

Hernández-Gutiérrez

et al. 2022

Laser & Photonics Reviews

138

View full text Add to dashboard Cite

show abstract

“…They can offer ultrahigh luminance and long lifetime with the advantage of power saving and are suitable for sunlight readable displays and large outdoor screens used for public information and vehicles. 1,2 On new generation displays individual LEDs are used as pixels, so the smaller the size of the LEDs, the higher will be the achieved resolution. Mini-LEDs are 100-200 μm in size and are mainly applied for backlight applications; microLEDs are below 100 μm so they are suitable for smartwatches, smartphones and full-color displays.…”

Section: Introductionmentioning

confidence: 99%

Advanced screen printing: Application on microLED tiled display

Frandoli¹,

D'Acunzo²,

Hada³

et al. 2022

J Soc Info Display

View full text Add to dashboard Cite

One of the suitable applications for microLED technology is on large LED screens, which are recently emerging as new generation of displays. The display is built as a combination of an array of smaller modules (or tiles) in a bottom up approach. On each module, LEDs are mounted on one side of the substrate and are powered by a matrix which is positioned on the opposite substrate face. In this configuration, the active matrix and the scan driver need to be electrically connected. Established manufacturing technologies such as lithography, sputtering and via drilling, used to achieve this connection suffer from low productivity and high costs, so new approaches have been recently investigated. In this work the realization of wrap‐around electrodes by screen printing has been studied, and this technique proves to be competitive with mainstream processes due to high productivity and processing yields.

show abstract

“…In particular, Micro‐LEDs have several advantages over their organic counterpart, OLEDs, in flexible displays, providing a wide range of unconventional display systems such as deformable displays, [ 21,22 ] electronic skins, [ 23 ] and bioinspired optoelectronics. [ 24 ] Transparent/flexible Micro‐LED displays are superior due to their faster response (≈ns vs. ≈µs), higher brightness (≥100 K nits vs. 36 K nits), and higher stability (>50 K h vs. ≈10 K h), [ 19,25,26 ] although manufacturing costs must be reduced.…”

Section: Introductionmentioning

confidence: 99%

Micro‐Light‐Emitting Diodes Based on InGaN Materials with Quantum Dots

Liu

Hyun

Sheng

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

gallium arsenide, GaAs; indium antimonide, InSb) generation semiconductor materials, third-generation semiconductor materials, such as GaN semiconductors, have improved physical and chemical characteristics, such as a wider band gap, higher frequency, higher efficiency, higher breakdown voltage, higher thermal conductivity, higher thermal resistance, and higher radiation resistance. [1,2] Therefore, they are better suited for electronic or optoelectronic devices that operate in harsh environments due to their superior energy efficiency.In particular, GaN and related alloys, also known as III-nitrides, are essential materials in many modern optoelectronic applications due to the superior benefits provided by these materials and are commercially successful in the sectors of solid lighting and laser technologies. [3,4] III-nitrides can crystallize in either wurtzite (WZ) or zinc-blende (ZB) phases, with the hexagonal WZ phase being more thermodynamically stable. [5] The band gap remains direct across the entire composition range from aluminum nitride (6.4 eV, ≈3.5 eV for GaN) to indium nitride (≈0.65 eV), with the band gap energy ranging from the deep-ultraviolet to the near infrared spectrum. [3,4,6] Because of these properties, III-nitrides are particularly useful for optoelectronic devices such as LEDs, laser diodes (LDs), and photodetectors, where a direct band gap is essential for efficient device operation. [7,8] The rapid growth of III-nitride technology in optoelectronics has been accelerated by the introduction of blue LEDs with indium gallium nitride (InGaN) as the active layer, which has become important devices in various applications since the photoluminescence from high-quality InGaN films was shown in 1992 and the first blue LEDs were demonstrated in 1993. [9,10] Due to their high efficiency, chemical inertness, and long operating lifetime, InGaN-based LEDs have been widely used in our daily life, such as in traffic signals, full-color displays, back-light sources for liquid-crystal displays, and mobile electronic devices, as well as in general lighting, including automobile lamps, architecture illumination, and household lighting. [11][12][13][14] These LEDs are not only a new type of light source but also a prospective contributor to global energy savings. [11] In recent years, the need for high pixel density, high power efficiency, high luminance, and high refresh rate next generation displays (i.e., wearable/flexible, automotive head-up, and augmented/virtual reality (AR/VR) displays) has piqued the Micro-light-emitting diodes (Micro-LEDs) based on gallium nitride (GaN) materials offer versatile platforms for various applications, including displays, data communication tools, photodetectors, and sensors. In particular, the introduction of Micro-LEDs in the optoelectronic industry enables the development of novel short-distance wireless communication applications for the Internet of Things as well as near-to-eye displays for virtual reality and augmented reality. Micro-LEDs used in conjunction with...

show abstract

Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

Cited by 181 publications

References 168 publications

Recent Progress in Micro‐LED‐Based Display Technologies

Recent Progress in Micro‐LED‐Based Display Technologies

Advanced screen printing: Application on microLED tiled display

Micro‐Light‐Emitting Diodes Based on InGaN Materials with Quantum Dots

Contact Info

Product

Resources

About