Patent ID: 8658515
Filing Date: 2014-02-25
Classification: C09J,H01L

Abstract:
1. A method of manufacturing a film for a semiconductor device in which a dicing film, a die bond film, and a protecting film are laminated in this order, wherein T is 4 or more, wherein T is defined as T=100−((T 2 /T 1 )×100), where T 1 is the light transmittance at a wavelength of 400 to 800 nm of a portion where the dicing film and the protecting film are laminated, and T 2 is the light transmittance at a wavelength of 400 to 800 nm of a portion where the dicing film, the die bond film, and the protecting film are laminated, the method comprising: producing the dicing film, producing the die bond film, punching the die bond film into the shape of a semiconductor wafer to which the die bond film is to be pasted, pasting a plurality of die bond films to the dicing film at prescribed intervals and further pasting the protecting film thereto with the die bond film side being a pasting surface, irradiating the die bond film with a light ray having a wavelength of 400 to 800 nm to detect the position of the die bond film based on the obtained T, and punching the dicing film out based on the detected position of the die bond film.