Patent ID: 9034678
Filing Date: 2015-05-19
Classification: G01N,H01L,Y10T

Abstract:
1. A method for forming a microelectromechanical device, comprising: forming at least one optical signal conduit over a substrate; forming a sacrificial layer over the at least one optical signal conduit; patterning the sacrificial layer thereby defining a perimeter; forming a bonding layer over the sacrificial layer and along the perimeter; planarizing a top surface of the bonding layer, wherein planarizing the top surface of the bonding layer includes a chemical mechanical polishing (CMP) process; patterning the bonding layer, wherein patterning the bonding layer includes removing the bonding layer over the sacrificial layer while retaining the bonding layer along the perimeter; removing the sacrificial layer thereby exposing a sidewall of the bonding layer along the perimeter and a top surface of the at least one optical signal conduit, after patterning the bonding layer; and bonding a cap over the planarized top surface of the bonding layer thereby forming a controlled environment.