Patent ID: 7357873
Filing Date: 2008-04-15
Classification: B81C,G03F

Abstract:
1. A polyimide thin film self-assembly process, comprising: a. obtaining a support substrate; b. depositing a PECVD phosphosilicate glass (PSG) sacrificial layer on top of said support substrate; c. depositing a low-stress undoped LPCVD polysilicon microstructure layer on top of said PECVD PSG sacrificial layer; d. coating a high surface tension force polyimide thin film on top of said low stress LPCVD polysilicon microstructure layer; e. patterning and etching an elastic joint form on said high surface tension force polyimide thin film; f. carrying out a wet etching process to etch and release a pre-defined portion of the said PECVD PSG sacrificial layer; and g. carrying out a reflow process to result in contracted deformation of said high surface tension force polyimide elastic joint to rotate and lift a pre-defined portion of said low stress LPCVD polysilicon microstructure layer.