公开(公告)号：US20170203960A1

公开(公告)日：2017-07-20

申请号：US15327902

申请日：2015-08-20

Applicant: CSMC TECHNOLOGIES FAB1 CO., LTD.

Inventor： Errong JING

IPC: B81B7/02 ,  G01J1/42 ,  G01J1/04 ,  B81C1/00

CPC classification number: B81B7/02 ,  B81B2201/0278 ,  B81B2203/0118 ,  B81C1/00 ,  B81C1/0015 ,  B81C2201/0197 ,  G01J1/04 ,  G01J1/42 ,  G01J5/024 ,  G01J5/0853

Abstract: A method for manufacturing a MEMS double-layer suspension microstructure comprises steps of: forming a first film body on a substrate, and a cantilever beam connected to the substrate and the first film body; forming a sacrificial layer on the first film body and the cantilever beam; patterning the sacrificial layer located on the first film body to manufacture a recessed portion used for forming a support structure, the bottom of the recessed portion being exposed of the first film body; depositing a dielectric layer on the sacrificial layer; patterning the dielectric layer to manufacture a second film body and the support structure, the support structure being connected to the first film body and the second film body; and removing the sacrificial layer to obtain the MEMS double-layer suspension microstructure.

公开(公告)号：US20170174508A1

公开(公告)日：2017-06-22

申请号：US15327230

申请日：2015-07-31

Applicant: CSMC TECHNOLOGIES FAB1 CO., LTD.

Inventor： Errong JING

IPC: B81C1/00 ,  B81B3/00

CPC classification number: B81C1/00182 ,  B81B3/0021 ,  B81B2203/0118 ,  B81B2203/0315 ,  B81B2203/04 ,  B81B2203/058 ,  B81C1/00603 ,  B81C2201/0109 ,  B81C2201/0111

Abstract: A method for manufacturing an MEMS torsional electrostatic actuator comprises: providing a substrate, wherein the substrate comprises a first silicon layer, a buried oxide layer and a second silicon layer that are laminated sequentially; patterning the first silicon layer and exposing the buried oxide layer to form a rectangular upper electrode plate separated from a peripheral region, wherein the upper electrode plate and the peripheral region are connected by only using a cantilever beam, and forming, on the peripheral region, a recessed portion exposing the buried oxide layer; patterning the second silicon layer and exposing the buried oxide layer to form a back cavity, wherein the back cavity is located in a region of the second silicon layer corresponding to the upper electrode plate, covers 40% to 60% of the area of the region corresponding to the upper electrode plate, and is close to one end of the cantilever beam; exposing the second silicon layer, and suspending the upper electrode plate and the cantilever beam; and respectively forming an upper contact electrode and a lower contact electrode on the second silicon layer.

公开(公告)号：US20170113930A1

公开(公告)日：2017-04-27

申请号：US15315640

申请日：2015-08-19

Applicant: CSMC TECHNOLOGIES FAB1 CO., LTD.

Inventor： Errong JING

IPC: B81C3/00

CPC classification number: B81C3/004 ,  B81C1/00 ,  B81C1/00603 ,  B81C3/00 ,  B81C2203/051 ,  G03F9/00 ,  H01L21/68

Abstract: A positioning method in a microprocessing process of bulk silicon comprises the steps of: fabricating, on a first surface of a first substrate (10), a first pattern (100), a stepper photo-etching machine alignment mark (200) for positioning the first pattern, and a double-sided photo-etching machine first alignment mark (300) for positioning the stepper photo-etching machine alignment mark; fabricating, on a second surface, opposite to the first surface, of the first substrate, a double-sided photo-etching machine second alignment mark (400) corresponding to the double-sided photo-etching machine first alignment mark; bonding a second substrate (20) on the first surface of the first substrate; performing thinning on a first surface of the second substrate; fabricating, on the first surface of the second substrate, a double-sided photo-etching machine third alignment mark (500) corresponding to the double-sided photo-etching machine second alignment mark; and finding, on the first surface of the second substrate by using the double-sided photo-etching machine third alignment mark, a corresponding position of the stepper photo-etching machine alignment mark.