Patent ID: 11932529
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Optics (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A method for making a microelectromechanical system (MEMS) device, the method comprising:
forming a photoresist layer on a spring tip layer, the spring tip layer over a substrate, the spring tip layer having a first wedge shaped protrusion having a first edge;
sculpting the photoresist layer to form a shaped depression feature using gray-scale lithography with a photomask including both partial and complete concentric opaque circles;
depositing a mirror layer over the photoresist layer, such that a second edge shaped protrusion is formed in a side of the mirror layer facing the spring tip layer, the second edge shaped protrusion of the mirror layer corresponding to the shaped depression feature in the photoresist layer;
patterning the mirror layer to form a mirror having the second edge shaped protrusion, wherein the mirror is deformable and the mirror is coupled to the substrate; and
removing the photoresist layer, wherein the second edge shaped protrusion has a second edge, the second edge configured to contact the first edge.