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

Tang，Lixue1,2; Wang，Huayi1; Ren，Jifeng1; Jiang，Xingyu2

2024-12-01

10.1038/s41528-024-00337-9

npj Flexible Electronics   影响因子和分区

2397-4621

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.

SCI

英语

通讯

2-s2.0-85200657926

Scopus

1.Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application,School of Biomedical Engineering,Capital Medical University,Beijing,No.10 Xitoutiao, You An Men Wai,100069,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,Shenzhen,No. 1088, Xueyuan Rd., Nanshan District, Guangdong,518055,China

Tang，Lixue,Wang，Huayi,Ren，Jifeng,et al. Highly robust soft-rigid connections via mechanical interlocking for assembling ultra-stretchable displays[J]. npj Flexible Electronics,2024,8(1).

Tang，Lixue,Wang，Huayi,Ren，Jifeng,&Jiang，Xingyu.(2024).Highly robust soft-rigid connections via mechanical interlocking for assembling ultra-stretchable displays.npj Flexible Electronics,8(1).

Tang，Lixue,et al."Highly robust soft-rigid connections via mechanical interlocking for assembling ultra-stretchable displays".npj Flexible Electronics 8.1(2024).