▎ 摘　　要

NOVELTY - The method involves providing first mixed solution containing a repairing material and a second mixed solution containing a matrix material. The first mixed solution and the second mixed solution are sequentially coated on a surface of a carrier. A thin film layer is obtained, where sum of coating times of the first mixed solution and the second mixed solution is an even number of times. The thin film layer is provided with a repair layer and a base layer that are alternately stacked with each other. An outermost substrate layer is formed on the base layer far away from the carrier. The outermost substrate layer is irradiated with a laser to form a graphene structure on the surface of the outermost substrate layer to obtain a thin film device. USE - Method for manufacturing a thin film device (claimed). ADVANTAGE - The method enables improving strain performance and electrical conductivity of the thin film device and a flexible strain sensor. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a flexible strain sensor manufacturing method; and (2) a flexible strain sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a thin film device.