Patent ID: 9269588
Filing Date: 2016-02-23
CPC Classification: B81C,G01L,H01L,H05K

Claim Text:
1. A method of making a flexible device comprising: providing a silicon-on-insulator wafer comprising a device layer having at least one silicon island and at least one metal trace, the device layer being posited on a buried oxide layer, the buried oxide layer being posited on a silicon substrate layer; depositing a first polymer layer over the silicon-on-insulator wafer, the first polymer layer being above and in contact with the at least one silicon island and the at least one metal trace; forming at least one etching windows through the first polymer layer, the device layer, and the buried oxide layer; using an etchant through the at least one etching window to degrade the silicon substrate layer; depositing a second polymer layer to seal the at least one etching window and conformally over the silicon substrate layer and the silicon-on-insulator wafer; and removing the silicon substrate layer.