Patent ID: 9567208
Date: 2017-02-14
CPC Classifications: B81B,B81C,H01L

Claim:
1. A semiconductor structure, comprising: a first device; a second device, contacted with the first device, wherein a chamber is formed between the first device and the second device; a first hole, disposed in the second device and defined between a first end with a first circumference and a second end with a second circumference; a second hole, disposed in the second device and aligned to the first hole; and a sealing object, for sealing the second hole; wherein the first end links with the chamber, and the first circumference is different from the second circumference; wherein the second hole is defined between the second end and a third end with a third circumference, the second circumference is smaller than the first circumference, and the third circumference is larger than the first circumference and the second circumference.