Patent ID: 9375930
Filing Date: 2016-06-28
CPC Classification: B41J,Y10T

Claim Text:
1. A chip manufacturing method of separating a first substrate and a second substrate that are bonded to each other into chips, the separating into chips performed at a section to be cut, the method comprising: forming a metallic film directly on a bonding surface between the first substrate and the second substrate in at least the section to be cut; forming a first fragile section on the first substrate by irradiating the section to be cut of the first substrate, the irradiating of the section to be cut performed from the first substrate side with a laser beam whose condensing point is focused thereon, and forming a second fragile section on the second substrate by melting the metallic film that is disposed on the section to be cut, the melted metallic film disposed the section to be cut on the second substrate to thereby cause the formation of the second fragile section; and dividing the first substrate and the second substrate along the first fragile section and the second fragile section.