Methods for CMOS-MEMS integrated devices with multiple sealed cavities maintained at various pressures

M Daneman, M Lim, K Huang, I Tchertkov - US Patent 9,540,230, 2017 - Google Patents
A Microelectromechanical systems (MEMS) structure comprises a MEMS wafer. A MEMS
wafer includes a handle wafer with cavities bonded to a device wafer through a dielectric …

MEMS devices and methods for forming same

CW Cheng, CH Chu - US Patent 9,085,455, 2015 - Google Patents
Embodiments of the present disclosure include MEMS devices and methods for forming
MEMS devices. An embodiment is a method for forming a microelectromechanical system …

Integrated MEMS devices with controlled pressure environments by means of enclosed volumes

K Huang, M Lim, SS Nasiri - US Patent 8,350,346, 2013 - Google Patents
An integrated MEMS device comprises a wafer where the wafer contains two or more
cavities of different depths. The MEMS device includes one movable structure within a first …

Process for a sealed mems device with a portion exposed to the environment

MJ Daneman, M Lim, J Seeger, I Tchertkov… - US Patent App. 13 …, 2013 - Google Patents
BACKGROUND 0003. Many MEMS devices, specifically those measuring or modifying
aspects of the environment outside of the device (eg pressure sensors, microphones …

Microelectromechanical systems (MEMS) devices at different pressures

H Huang, HF Chen, WC Tai, SC Yu, CM Hung… - US Patent …, 2017 - Google Patents
Some embodiments relate to multiple MEMS devices that are integrated together on a single
Substrate. A device Substrate comprising first and second micro-electro mechanical system …

Microfabricated ultrasonic transducers and related apparatus and methods

JM Rothberg, SA Alie, KG Fife, NJ Sanchez… - US Patent …, 2019 - Google Patents
Micromachined ultrasonic transducers integrated with complementary metal oxide
semiconductor (CMOS) sub strates are described, as well as methods of fabricating such …

Microfabricated ultrasonic transducers and related apparatus and methods

JM Rothberg, SA Alie, KG Fife, NJ Sanchez… - US Patent …, 2019 - Google Patents
Micromachined ultrasonic transducers integrated with complementary metal oxide
semiconductor (CMOS) sub strates are described, as well as methods of fabricating such …

MEMS devices and fabrication methods thereof

CH Chu, CW Cheng, TH Lee, CH Lin - US Patent 9,452,924, 2016 - Google Patents
A method for fabricating a MEMS device includes providing a micro-electro-mechanical
system (MEMS) substrate having a sacrificial layer on a first side, providing a carrier …

Wafer level sealing methods with different vacuum levels for MEMS sensors

YC Liu, CH Chu, K Chang, CW Cheng - US Patent 9,035,451, 2015 - Google Patents
The present disclosure relates to a method of forming a plu rality of MEMs device having a
plurality of cavities with different pressures on a wafer package system, and an asso ciated …

CMOS-MEMS integrated device including multiple cavities at different controlled pressures and methods of manufacture

D Lee, S Jongwoo, JI Shin, P Smeys, M Lim - US Patent 9,738,512, 2017 - Google Patents
An integrated MEMS device comprises two substrates where the first and second substrates
are coupled together and have two enclosures there between. One of the first and second …