Semiconductor device of chip-on-chip structure, assembling process therefor, and semiconductor chip to be bonded to solid surface
First Claim
1. A semiconductor device, comprising:
- a first semiconductor chip;
a second semiconductor chip bonded to the first semiconductor chip in a stacked relation; and
a registration structure which causes the first and second semiconductor chips to be positioned with respect to each other with use of a depression-projection engagement.
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Accused Products
Abstract
A semiconductor device including a first semiconductor chip, a second semiconductor chip bonded to the first semiconductor chip in a stacked relation, and a registration structure which causes the first and second semiconductor chips to be positioned with respect to each other by depression-projection engagement therebetween. The registration structure includes, for example, a registration recess provided on a surface of the first semiconductor chip, and a registration projection provided on a surface of the second semiconductor chip for engagement with the registration recess. The registration projection may be a spherical member provided on the surface of the second semiconductor chip.
30 Citations
32 Claims
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1. A semiconductor device, comprising:
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a first semiconductor chip;
a second semiconductor chip bonded to the first semiconductor chip in a stacked relation; and
a registration structure which causes the first and second semiconductor chips to be positioned with respect to each other with use of a depression-projection engagement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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- 20. A semiconductor chip which is to be bonded to a surface of a solid body, the semiconductor chip comprising a projection or a recess provided on a surface thereof for positioning thereof with respect to the surface of the solid body.
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28. A semiconductor device, comprising:
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a first semiconductor chip;
a second semiconductor chip bonded to the first semiconductor chip in a stacked relation;
a first bump formed on a surface of the first semiconductor chip; and
a second bump formed on a surface of the second semiconductor chip;
wherein the first and second bumps respectively have mating surfaces to be bonded to each other, and the mating surfaces of the first and second bumps having different areas. - View Dependent Claims (29, 30)
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31. A semiconductor device assembling process, comprising the steps of:
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forming a registration recess on a surface of a first semiconductor chip;
forming a registration recess on a surface of a second semiconductor chip;
placing a spherical member on the registration recess of the first semiconductor chip;
stacking the first and second semiconductor chips with the spherical member being held between the registration recesses of the first and second semiconductor chips; and
bonding the stacked first and second semiconductor chips to each other. - View Dependent Claims (32)
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Specification