July 19, 2024


Step Into The Technology

The development of the world’s first distorti

5 min read

Comparison image before and after stretching the meta-display

picture: When the meta-display is stretched lengthwise, it is also stretched widthwise at the very same ratio, so that the exhibited graphic can be expanded with out distortion.
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Credit rating: The Korea Institute of Machinery and Products (KIMM)

The Korea Institute of Machinery and Resources (President Sang Jin Park, hereafter referred to as KIMM), an institute underneath the jurisdiction of the Ministry of Science and ICT, has productively made a new stretchable meta-display screen technologies that can be stretched up to 25% devoid of image distortion, for the to start with time in the entire world.


Senior researcher Dr. Bongkyun Jang and his exploration team customers of the Department of Nano-Mechanics at KIMM have lately produced a distortion-absolutely free stretchable meta-exhibit underneath the uniaxial stretching, and printed their investigate benefits in the peer-reviewed journal State-of-the-art Functional Elements.

* Paper Title: Auxetic Meta-display: Stretchable Display with out Picture Distortion (released on the net on Feb. 15, 2022)


This achievement was produced by way of the “Development of Meta-screen Technology Primarily based on Micro-LEDs ” venture carried out in 2019 as portion of the Ministry of Science and ICT’s World wide Frontier Task, with help from the Center for Superior Meta-Products (Director Dr. Hak-Joo Lee, hereinafter referred to as CAMM). The Office of Nano-Mechanics at KIMM has been studying the industry of micro-LED transfer technologies since 2008.


For the very first time in the planet, the KIMM investigate workforce successfully made a 3-inch micro-LED meta-screen that does not distort the shown impression, even when the display is pulled in a specified way. This was obtained by employing the structure and producing technology of metamaterials with distinctive mechanical qualities that do not exist in character.


Most stretchable elements in mother nature, these types of as rubber, display the shrinkage in width when stretched lengthwise and hence ensuing in impression distortion. This was also the similar in conditions of the rubber-based mostly stretchable display, up until finally now.


The KIMM exploration team applied mechanical metamaterials with a destructive Poisson’s ratio to a circuit board. The Poisson’s ratio refers to the ratio at which the width of material shrinks when it is stretched lengthwise. When a mechanical metamaterial with a Poisson’s ratio of -1 is stretched lengthwise, it demonstrates the influence of stretching at the exact same ratio widthwise. Consequently, a display screen utilizing these types of materials is characterized by pictures that are not distorted.


In acquiring this new meta-screen manufacturing engineering, the workforce used mechanical metamaterial layouts and manufacturing technologies to the world’s main big-area micro-LED roll transfer technology. Dependent on the profitable final results of this undertaking, the analysis group designs to carry out observe-up analysis on micro-LED displays for extremely-practical metaverses.


Furthermore, in buy to respond to the growing mini-LED and graphene industries, the team has proven investigation institute spin-off organization, YTS Micro-Tech and MCK-Tech, to encourage the useful use of these new technologies.


Dr. Bongkyun Jang said that his crew has solved the basic challenge of image distortion in stretchable shows by making use of meta-buildings, and he and his crew will continue to pursue the commercialization of meta-display screen systems, so that they can be utilized to various electronic products in the upcoming.


The recently developed versatile meta-display know-how is predicted to add to the diversification of platforms for cellular digital units, this kind of as cellular phones and tablets. This kind of displays can also adhere to the pores and skin of the human human body without the need of any wrinkles, consequently permitting options for its application in the area of professional medical units, splendor and health care.



The Korea Institute of Machinery and Products (KIMM) is a non-financial gain govt-funded research institute under the Ministry of Science and ICT. Because its basis in 1976, KIMM is contributing to financial progress of the nation by undertaking R&D on crucial systems in equipment and supplies, conducting reliability exam analysis, and commercializing the developed solutions and systems.

This accomplishment was developed via the “Development of Meta-display screen Know-how Based on Micro-LEDs ” job carried out in 2019 as component of the Ministry of Science and ICT’s Global Frontier Job, with assist from the Middle for Highly developed Meta-Materials (Director Dr. Hak-Joo Lee). KIMM senior researcher Dr. Bongkyun Jang and his research group users have revealed their research outcomes in the peer-reviewed journal Innovative Purposeful Supplies, with the title “Auxetic Meta-screen: Stretchable Display screen without having Impression Distortion”.
(DOI: https://doi.org/10.1002/adfm.202113299)


* About the Heart for Innovative Meta-Components (CAMM)

The Center for Advanced Meta-Resources (CAMM) was set up in 2014 to establish resource systems for electromagnetic and mechanical metamaterials and put them into follow. More than the past 7 a long time, through participation in convergence research with many universities and study institutes below the assistance of KIMM, CAMM has utilized for far more than 480 patents in the fields of displays, ultrasonic sensors, seem absorption and audio insulation, bio-diagnostics and treatment, and military stealth technological innovation and has published all around 760 SCI-quality papers.

Via development jobs on micro-LED technological innovation supported by CAMM, numerous initiatives have been made to utilize such designed systems in simple configurations. For case in point, 19 SCI-grade papers have been posted in the fields of producing processes for meta-displays, big-area producing gear, meta-stamps, meta-circuit boards, micro-LED repair, and meta-exhibit purposes. There also have been 54 patent programs (32 domestic and 22 overseas), along with 5 technological innovation transfer jobs (295 million KRW) and the establishment of two analysis institute spin-off businesses.

Also, CAMM has included about 20 micro LED-linked patents owned by the KIMM to its listing of patents and fashioned the Industrial Affiliates Plan (IAP) in the industry of meta-shows in an exertion to recruit participating corporations. It also programs to select and guidance company consortium duties with the aim of developing a meta-show market ecosystem.

Web site: https://www.camm.re.kr/eng

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