A method of manufacturing a semiconductor device is provided. The method includes forming a passivation film on a substrate including a first element region, a second element region adjacent to the first element region in a first direction, a third element region adjacent to the first region in a second direction, and a first scribe region extending to the first direction between the first element region and the third element region, forming a first trench in the passivation film between the first scribe region and the first element region, forming a second trench in the passivation film between the third element region and the first scribe region, and forming a film on the passivation film where the trenches have been formed by coating. The each of trenches is formed continuously along the first and the second element region.