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.

可拉伸电子电路可以高度集成地无缝贴合不规则和动态表面。然而，由于软互连件和刚性电子器件之间缺乏牢固的连接，当前的可拉伸配置通常具有有限的拉伸性。在这里，我们在热塑性弹性体上印刷了高度可拉伸的金属聚合物导体作为互连件。我们为刚性电子产品开发了具有多孔表面的电子背心，并引入了聚酯热熔粘合剂来加强软互连件和刚性电子产品之间的连接。热粘合后，粘合剂渗透电子背心的多孔表面，形成机械互锁，并为连接提供 8.34 N/cm 的粘合力（比导电粘合剂高 3 倍）。因此，不同尺寸和不同引脚数的刚性电子器件可以与软互连形成牢固的连接，实现约 700% 的最大应变容差（比导电粘合剂高 10 倍）。我们实现了高度集成的超可拉伸显示器，可承受高达 220% 的拉伸而不会出现坏点。