Patent ID: 7767554
Filing Date: 2010-08-03
Classification: H01L

Abstract:
1. A semiconductor chip manufacturing method in which a semiconductor chip containing a plurality of integrated circuits formed in a plurality of regions segmented by a plurality of scribe lines and containing a plurality of test patterns formed in said scribe lines is divided by a plasma etching process so as to manufacture individual semiconductor chips with respect to each of the integrated circuits, said semiconductor chip manufacturing method comprising: a test pattern removing step in which since laser light is irradiated from the side of circuit forming planes of said integrated circuits along the scribe lines of said semiconductor wafer, said test patterns are removed in combination with a front plane layer of said semiconductor wafer; a circuit protection seat adhering step for adhering a circuit protection seat on said circuit forming plane of said semiconductor wafer after said test pattern removing step is performed; a wafer rear plane grinding step for mechanically grinding said semiconductor wafer under such a condition that said circuit protection seat has been adhered from a rear plane of said circuit forming plane so as to thin the semiconductor wafer; a mask-purpose seat adhering step for adhering a mask-purpose seat on said rear plane of the semiconductor wafer after said wafer rear plane grinding step is performed, said mask-purpose seat constituting a mask in said plasma etching process; a mask work-processing step by which since laser light is irradiated from the side of said mask-purpose seat along the scribe lines of said semiconductor wafer on which said mask-purpose seat has been adhered, only a predetermined width of said mask-purpose seat on said scribe lines is removed so as to work-process said mask; a plasma dicing step by which since a portion in said semiconductor wafer, which corresponds to said removed predetermined width of the mask-purpose seat, is plasma-etched after said mask work-processing step is performed, a damaged layer produced by irradiating said laser light is removed, and also, said semiconductor wafer is divided with respect to the individual integrated circuits; an adhesive seat adhering step by which an adhesive seat is adhered onto said semiconductor wafer after said plasma dicing process is performed by covering an upper plane of said mask-purpose seat, while said adhesive seat is employed in order to hold the semiconductor chips under such a condition that said semi-conductor chips have been individually divided; and a circuit protection seat removing step for removing said circuit protection seat from the semiconductor wafer after said adhesive seat adhering step is performed.