Semiconductor wafer
First Claim
1. A semiconductor wafer comprising:
- first and second semiconductor wafers having crystal orientation display sections to be nicks indicative of crystal orientations formed on fringes thereof, wherein said crystal orientation display sections are indicative of an identical crystal orientation in said first and second semiconductor wafers, and said first and second semiconductor wafers are bonded with said crystal orientation display sections shifted from each other.
6 Assignments
0 Petitions
Accused Products
Abstract
To provide a semiconductor wafer having crystal orientations of a wafer for the support substrate and a wafer for the device formation shifted from each other, wherein two kinds of wafers having different crystal orientations in which a notch or an orientation flat is to be provided do not need to be prepared. One of two semiconductor wafers having a notch or an orientation flat provided in the same crystal orientation <110> is set to be a wafer (1) for the support substrate and the other is set to be a wafer for the device formation. Both wafers are bonded with the notches or orientation flats shifted from each other (for example, a crystal orientation <100> of the wafer for the device formation and the crystal orientation <110> of the wafer (1) for the support substrate are set to the same direction). The wafer for the device formation is divided to obtain an SOI layer (3). A MOS transistor (TR1) or the like is formed on the SOI layer (3).
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Citations
10 Claims
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1. A semiconductor wafer comprising:
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first and second semiconductor wafers having crystal orientation display sections to be nicks indicative of crystal orientations formed on fringes thereof, wherein said crystal orientation display sections are indicative of an identical crystal orientation in said first and second semiconductor wafers, and said first and second semiconductor wafers are bonded with said crystal orientation display sections shifted from each other. - View Dependent Claims (2, 3, 4)
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5. A semiconductor wafer comprising:
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a first semiconductor wafer; and
a second semiconductor wafer having a crystal orientation display section to be a nick indicative of a crystal orientation formed on a fringe, wherein said first and second semiconductor wafers are bonded to each other such that a part of a main surface of said first semiconductor wafer is exposed by said crystal orientation display section of said second semiconductor wafer, and printing is provided to said part of said main surface of said first semiconductor wafer. - View Dependent Claims (6, 7)
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8. A semiconductor wafer comprising:
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first and second semiconductor wafers having no buried insulating layer, said first and second semiconductor wafers including main suffaces to which a semiconductor that is a material of bulk structures is exposed, wherein said main surfaces of said first and second semiconductor wafers are bonded with crystal orientations shifted from each other. - View Dependent Claims (9, 10)
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Specification