An object is to provide a semiconductor device which is not easily broken even if stressed externally and a method for manufacturing such a semiconductor device. A semiconductor device includes an element layer including a transistor in which a channel is formed in a semiconductor layer and insulating layers which are formed as an upper layer and a lower layer of the transistor respectively, and a plurality of projecting members provided at intervals of from 2 to 200 μm on a surface of the element layer. The longitudinal elastic modulus of the material for forming the plurality of projecting members is lower than that of the materials of the insulating layers.