Flexible electronics encompasses devices and circuits fabricated on bendable substrates—plastic, metal foil, or ultrathin glass—enabling foldable, rollable, or conformal form factors. Applications include foldable smartphones (Samsung Galaxy Fold, Huawei Mate X), flexible OLED displays, flexible solar cells for lightweight deployment, and wearable sensors. The technology typically uses thin-film transistors (TFTs) on polymer or metal foil substrates, with careful attention to mechanical reliability, barrier layers to prevent moisture and oxygen ingress, and encapsulation. Flexible solar cells offer advantages for space, portable power, and building-integrated photovoltaics. The Nokia Morph concept exemplified early vision for flexible, multifunctional devices.
The consumer electronics and energy sectors seek form factors that adapt to use cases: phones that fold into tablets, displays that roll into pockets, solar arrays that deploy compactly. Flexible electronics enable these form factors. Commercial adoption has begun for foldable phones and flexible displays; flexible solar remains more niche. Challenges include durability over flex cycles, manufacturing yield, and cost. Research continues into improved barrier layers, robust TFT materials, and scalable fabrication. As display and solar markets mature, flexible form factors are likely to expand.