Patent ID: 7572350

Claim:
A method of manufacturing a laminate comprising first and second substrates made of respective materials, the corresponding transmittance and absorptance properties of which, with respect to a laser beam, are different from each other, the method comprising: forming a groove in a first surface of the second substrate; putting the second substrate, in which the groove is formed, on the first substrate so that the groove is directed toward the first substrate; and irradiating a laser beam onto the first and the second substrates from a second surface of the second substrate, opposite to the first surface thereof on which the groove is formed, along the groove, to cut the laminate, wherein the first substrate is cut by the laser beam, as transmitted through the second substrate, particles of the first substrate are melted and vaporized by the laser beam and attach to an inner face of the groove of the second substrate, forming a film on the inner face, and the film is irradiated by the laser beam passing through the second substrate and along the groove, to stress the second substrate and thereby cut the laminate.