{"id":510231,"date":"2022-11-15T17:57:35","date_gmt":"2022-11-15T14:57:35","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/mass-transfer-techniques-for-large-scale-and-high-density-microled-arrays\/"},"modified":"2022-11-15T17:57:35","modified_gmt":"2022-11-15T14:57:35","slug":"mass-transfer-techniques-for-large-scale-and-high-density-microled-arrays","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/mass-transfer-techniques-for-large-scale-and-high-density-microled-arrays\/","title":{"rendered":"#Mass transfer techniques for large-scale and high-density microLED arrays"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2cedcb1631b\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2cedcb1631b\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/mass-transfer-techniques-for-large-scale-and-high-density-microled-arrays\/#%E2%80%9CMass_transfer_techniques_for_large-scale_and_high-density_microLED_arrays%E2%80%9D\" >&#8220;Mass transfer techniques for large-scale and high-density microLED arrays&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CMass_transfer_techniques_for_large-scale_and_high-density_microLED_arrays%E2%80%9D\"><\/span>&#8220;Mass transfer techniques for large-scale and high-density microLED arrays&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/mass-transfer-techniqu.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/mass-transfer-techniqu.jpg\" data-sub-html=\"Figure. l shows the simplified fabrication process of microLED displays (center part in Fig. 1) and representative applications that have been described above. Deterministic assembly of microLED chips from different growth\/donor substrates is required. However, since the feature size of microLED chips is &amp;lt;100 \u00b5m, there is a trade-off between tiny feature size and fabrication feasibility. There are three enormous challenges. 1) The extreme transfer efficiency (~tens of millions\/h) is vital because of their vast numbers. 2) The extreme placement accuracy (~ 5% of the microLED chip size) is critical for microscale chips. 3) The extreme reliability (~99.9999% ) is also essential. In short, traditional assembly methods are not practical for MicroLEDs, and new integration technologies need to be developed. Credit: By Furong Chen, Jing Bian, Jinlong Hu, Ningning Sun, Biao Yang, Hong Ling, Haiyang Yu, Kaixin Wang, Mengxin Gai, Yuhang Ma and YongAn Huang\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/mass-transfer-techniqu.jpg\" alt=\"Mass transfer techniques for large-scale and high-density microLED arrays\" title=\"Figure. l shows the simplified fabrication process of microLED displays (center part in Fig. 1) and representative applications that have been described above. Deterministic assembly of microLED chips from different growth\/donor substrates is required. However, since the feature size of microLED chips is &amp;lt;100 \u00b5m, there is a trade-off between tiny feature size and fabrication feasibility. There are three enormous challenges. 1) The extreme transfer efficiency (~tens of millions\/h) is vital because of their vast numbers. 2) The extreme placement accuracy (~ 5% of the microLED chip size) is critical for microscale chips. 3) The extreme reliability (~99.9999% ) is also essential. In short, traditional assembly methods are not practical for MicroLEDs, and new integration technologies need to be developed. Credit: By Furong Chen, Jing Bian, Jinlong Hu, Ningning Sun, Biao Yang, Hong Ling, Haiyang Yu, Kaixin Wang, Mengxin Gai, Yuhang Ma and YongAn Huang\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Figure. l shows the simplified fabrication process of microLED displays (center part in Fig. 1) and representative <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>lications that have been described above. Deterministic assembly of microLED chips from different growth\/donor substrates is required. However, since the feature size of microLED chips is &lt;100 \u00b5m, there is a trade-off between tiny feature size and fabrication feasibility. There are three enormous challenges. 1) The extreme transfer efficiency (~tens of millions\/h) is vital because of their vast numbers. 2) The extreme placement accuracy (~ 5% of the microLED chip size) is critical for microscale chips. 3) The extreme reliability (~99.9999% ) is also essential. In short, traditional assembly methods are not practical for MicroLEDs, and new integration technologies need to be developed. Credit: By Furong Chen, Jing Bian, Jinlong Hu, Ningning Sun, Biao Yang, Hong Ling, Haiyang Yu, Kaixin Wang, Mengxin Gai, Yuhang Ma and YongAn Huang<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>Recent impressive advances in mass transfer techniques have proven to be a promising solution to overcome the extreme requirements of assembling microLED chips, including the laser lift-off technique, contact \u00b5TP technique, laser non-contact \u00b5TP technique and self-assembly technique.<\/p>\n<p>                                                                                The development of these advanced mass transfer techniques also provides an evaluation of microLED display techniques for applications in ultra-large displays, flexible electronics and visible light communications.<\/p>\n<p>In a new paper published in the <i>International Journal of Extreme Manufacturing<\/i>, a team of researchers, led by Dr. YongAn Huang from State Key Laboratory of Digital Manufacturing Equipment and <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">Technology<\/a>, Flexible Electronics Research Center, Huazhong University of <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> and Technology, PR China, have summarized comprehensively the extreme processes and applications of mass transfer techniques.<\/p>\n<p>The main aim of this review is to address the latest developments in mass transfer techniques and widespread applications in microLED displays. The <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/general\/\" data-internallinksmanager029f6b8e52c=\"3\" title=\"General\" target=\"_blank\" rel=\"noopener\">general<\/a> assembly process of microLED displays and the highlight of key challenges of mass transfer techniques have been discussed first. Thereafter, various state-of-the-art mass transfer strategies and principles adopted in different production steps (i.e., epitaxial Lift-off technique and pick-and-place technique) of microLED displays are described. Finally, future research directions and opportunities are discussed in terms of transfer mechanisms, reliability, and cost effects.<\/p>\n<p>Professor YongAn Huang (Huazhong University of Science and Technology) provides an outlook on the future research and applications needed for mass transfer:<\/p>\n<p>&#8220;A further in-depth study of interfacial adhesion mechanisms is necessary. The essential relationship between the process parameters and interface reaction (e.g., adhesion strength, fracture mechanics, and chip peeling\/flighting state) can undoubtedly provide quantitative guidance for the high reliability of mass transfer.&#8221;<\/p>\n<p>&#8220;Although lots of small-area transfer schemes have been extensively verified, a further improvement in the reliability, accuracy, and efficiency of large-area transfer techniques is still an area of tremendous opportunities.&#8221;<\/p>\n<p>&#8220;For achieving high reliability, the development of high precision micro-fabrication\/position technologies and material preparations for chips, transfer stamps, and receiver substrates\/solders are hotspots. Since lots of mass transfer techniques rely on some specific properties\/shapes at specified positions. For example, the fluid self-assembly technique has special requirements for adhesives, which ask for better fluidity, high bonding selectivity between assembled and unassembled surfaces, and acid\/high-temperature resistance considering subsequent processes.&#8221;<\/p>\n<p>&#8220;Further exploration of cost-efficient mass transfer techniques is full of challenges as well as opportunities. The development of reversible laser-assisted \u03bcTP has important practical significance, which can easily achieve high throughput for large-scale and high-output manufacturing with the help of parallel laser systems and automated platforms.&#8221;\n                                                                                                                            <\/p>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Furong Chen et al, Mass transfer techniques for large-scale and high-density microLED arrays, <i>International Journal of Extreme Manufacturing<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1088\/2631-7990\/ac92ee\">DOI: 10.1088\/2631-7990\/ac92ee<\/a><\/p><\/div>\n<p>                                                Provided by<br \/>\n                                                                                                    International Journal of Extreme Manufacturing<\/p>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Mass transfer techniques for large-scale and high-density microLED arrays (2022, November 15)<br \/>\n                                                 retrieved 15 November 2022<br \/>\n                                                 from https:\/\/techxplore.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-11-mass-techniques-large-scale-high-density-microled.html<\/p>\n<p>                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong>\n<\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/science\/\" target=\"_blank\" rel=\"noopener\">Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/techxplore.com\/news\/2022-11-mass-techniques-large-scale-high-density-microled.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Mass transfer techniques for large-scale and high-density microLED arrays&#8221; Figure. l shows the simplified fabrication process of microLED displays (center part in Fig. 1) and representative applications that have been described above. Deterministic assembly of microLED chips from different growth\/donor substrates is required. However, since the feature size of microLED chips is &lt;100 \u00b5m, there&#8230;<\/p>\n","protected":false},"author":1,"featured_media":510232,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/mass-transfer-techniqu.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-510231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/510231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=510231"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/510231\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/510232"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=510231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=510231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=510231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}