11-03-2021 дата публикации
Номер: US20210074672A1
In a manufacturing method of a semiconductor device according to an embodiment, a first substrate having a first elastic modulus is joined onto a second substrate having a second elastic modulus higher than the first elastic modulus. A first semiconductor element is formed on the first substrate. The first substrate is detached from the second substrate. 1. A manufacturing method of a semiconductor device , the method comprising:joining a first substrate having a first elastic modulus onto a second substrate having a second elastic modulus higher than the first elastic modulus;forming a first semiconductor element on the first substrate; anddetaching the first substrate from the second substrate.2. The method of claim 1 , further comprisingafter joining the first substrate to the second substrate,thinning the first substrate.3. The method of claim 1 , further comprisingbefore joining the first substrate to the second substrate,providing a first separable layer on the second substrate, the first separable layer joining the first substrate to the second substrate.4. The method of claim 2 , further comprisingbefore joining the first substrate to the second substrate,providing a first separable layer on the second substrate, the first separable layer joining the first substrate to the second substrate.5. The method of claim 1 , whereinthe first substrate is a silicon single crystal, and{'sub': 2', '3, 'the second substrate is a single crystal or a polycrystal of SiC, AlN, SiN, or AlO, or a composite thereof.'}6. The method of claim 2 , whereinthe first substrate is a silicon single crystal, and{'sub': 2', '3, 'the second substrate is a single crystal or a polycrystal of SiC, AlN, SiN, or AlO, or a composite thereof.'}7. The method of claim 3 , whereinthe first substrate is a silicon single crystal, and{'sub': 2', '3, 'the second substrate is a single crystal or a polycrystal of SiC, AlN, SiN, or AlO, or a composite thereof.'}8. The method of claim 3 , wherein the first ...
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