Highly robust soft-rigid connections via mechanical interlocking for assembling ultra-stretchable displays  

作　　者：Lixue Tang Huayi Wang Jifeng Ren Xingyu Jiang 

机构地区：[1]Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application,School of Biomedical Engineering,Capital Medical University,No.10 Xitoutiao,You An Men Wai,100069 Beijing,China [2]Shenzhen Key Laboratory of Smart Healthcare Engineering,Guangdong Provincial Key Laboratory of Advanced Biomaterials,Department of Biomedical Engineering,Southern University of Science and Technology,No.1088,Xueyuan Rd.,Nanshan District,518055 Shenzhen,Guangdong,P.R.China

出　　处：《npj Flexible Electronics》2024年第1期387-396,共10页npj-柔性电子(英文)

基　　金：the National Key R&D Program of China(2022YFB3804700);National Natural Science Foundation of China(82102212);R&D Programof Beijing Municipal Education Commission(KM202210025022);Young Elite Scientists Sponsorship Program by BAST,the National Natural Science Foundation of China(22234004);Guangdong Provincial Key Laboratory of Advanced Biomaterials(2022B1212010003);Guangdong Innovative and Entrepreneurial Research Team Program(2019ZT08Y191);the Shenzhen Science and Technology Program(KQTD20190929172743294,ZDSYS20200811144003009,GDX20230116091642001,GJHZ20220913142610019);Guangdong Major Talent Introduction Project(2019CX01Y196);Tencent Foundation through the XPLORER PRIZE for financial support.

摘　　要：Stretchable electronic circuits can seamlessly conform to irregular and dynamic surfaces with high integration.However,current stretchable configurations typically have limited stretchability due to the lack of robust connections between soft interconnects and rigid electronics.Here,we printed highly stretchable metal–polymer conductors on thermoplastic elastomers as interconnects.We developed electronic vests with porous surfaces for rigid electronics and introduced polyester hot-melt adhesives to strengthen connections between soft interconnects and rigid electronics.After thermal bonding,the adhesive penetrates the porous surface of electronic vests,creating a mechanical interlock and providing an adhesion force of 8.34 N/cm for the connection(3×higher than conductive adhesives).Thus,rigid electronics of different sizes and different pin counts can form strong connections to soft interconnects,achieving a maximum strain tolerance of~700%(10×higher than conductive adhesives).We achieved highly integrated ultra-stretchable displays that can withstand stretching up to 220%without dead pixels.

关 键 词：RIGID STRETCHING POLYESTER 

分 类 号：TG1[金属学及工艺—金属学]