MAGNETIC BUBBLE DEVICE

PURPOSE:To improve yield in the manufacture of magnetic bubble chips by fixing two or more pieces of individual blocks on an auxiliary substrate and constituting the magnetic bubble chips having a desired storage capacity, thereby making it possible that the said blocks whose center value of bias ma...

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1. Verfasser: SUKETA TOSHIAKI
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To improve yield in the manufacture of magnetic bubble chips by fixing two or more pieces of individual blocks on an auxiliary substrate and constituting the magnetic bubble chips having a desired storage capacity, thereby making it possible that the said blocks whose center value of bias magnetic field are close are combined. CONSTITUTION:A wafer 4 provided with plural pieces of chip constituting elements 41 and a cutting space 42 for dividing the chip constituting element 41 is cut to form a piece 51 having a single chip constituting element 41 or two or more pieces of the element 41. The two or more pieces of said block 51 are fixed on the auxiliary substrate 6 complying to a positioning means provided on the substrate 6 to form the magnetic bubble chip 5 of desired storage capacity. As a result, the probability that neighboring two pieces of the chip-constituting elements are all made to good product and their center values of bias magnetic field become close, is made higher, comparing with that of that neighboring four pieces.