Abstract:
An embedded micro-electro-mechanical system (MEMS) (100) comprising a semiconductor chip (101) embedded in an insulating board (120), the chip having a cavity (102) including a radiation sensor MEMS (105), the opening (104) of the cavity at the chip surface covered by a plate (110) transmissive to the radiation (150) sensed by the MEMS. The plate surface remote from the cavity having a bare central area, to be exposed to the radiation sensed by the MEMS in the cavity, and a peripheral area covered by a metal film (111) touching the plate surface and a layer (112) of adhesive stacked on the metal film.
Abstract:
A transportation device is provided having multiple sensors configured to detect and measure different parameters of interest. The transportation device includes at least one monolithic integrated multi-sensor (MIMS) device. The MIMS device comprises at least two sensors of different types formed on a common semiconductor substrate. For example, the MIMS device can comprise an indirect sensor and a direct sensor. The transportation device couples a first parameter to be measured directly to the direct sensor. Conversely, the transportation device can couple a second parameter to be measured to the indirect sensor indirectly. Other sensors can be added to the transportation device by stacking a sensor to the MIMS device or to another substrate coupled to the MIMS device. This supports integrating multiple sensors such as a microphone, an accelerometer, and a temperature sensor to reduce cost, complexity, simplify assembly, while increasing performance.
Abstract:
A method of manufacturing a micro-electrical-mechanical system with thermally isolated active elements. Such a system may embody a bolometer, which is well suited for detecting electromagnetic radiation between 90 GHz and 30 THz while operating at room temperature. The method also discloses a generalized process for manufacturing circuitry incorporating active and passive micro-electrical-mechanical systems in a silicon wafer.
Abstract:
A chip (100) for radiation measurements, the chip comprising a first substrate (110) comprising a first sensor (111) and a second sensor (116). The chip (100) moreover comprises a second substrate (120) comprising a first cavity (121) and a second cavity (126) both with oblique walls. An internal layer (128) is present on the inside of the second cavity (126). The second substrate (120) is sealed to the first substrate with the cavities (121, 126) on the inside such that the first cavity (121) is above the first sensor (111) and the second cavity (126) is above the second sensor (116).
Abstract:
An electronic device and methods of manufacture thereof. One or more methods may include providing a lid wafer having a cavity and a surface surrounding the cavity and a device wafer having a detector device and a reference device. In certain examples, a solder barrier layer of titanium material may be deposited onto the surface of the lid wafer. The solder barrier layer of titanium material may further be activated to function as a getter. In various examples, the lid wafer and the device wafer may be bonded together using solder, and the solder barrier layer of titanium material may prevent the solder from contacting the surface of the lid wafer.
Abstract:
A sealed package having a device 102 disposed on a wafer structure and a lid structure 108 bonded to the device wafer. The device wafer includes: a substrate 104; a metal ring 107DW disposed on a surface portion of substrate around the device and a bonding material 118 disposed on the metal ring. A first layer of the metal ring includes a stress relief buffer layer 109DW having a higher ductility than that of the surface portion of the substrate and a width greater than the width of the bonding material. The metal ring extends laterally beyond at least one of the inner and outer edges of the bonding material. The stress relief buffer layer has a coefficient of thermal expansion greater than the coefficient of expansion of the surface portion of the substrate and less than the coefficient of expansion of the bonding material.
Abstract:
A chip (100) for radiation measurements, the chip comprising a first substrate (110) comprising a first sensor (111) and a second sensor (116). The chip (100) moreover comprises a second substrate (120) comprising a first cavity (121) and a second cavity (126) both with oblique walls. An internal layer (128) is present on the inside of the second cavity (126). The second substrate (120) is sealed to the first substrate with the cavities (121, 126) on the inside such that the first cavity (121) is above the first sensor (111) and the second cavity (126) is above the second sensor (116).
Abstract:
A method of manufacturing a micro-electrical-mechanical system with thermally isolated active elements. Such a system may embody a bolometer, which is well suited for detecting electromagnetic radiation between 90GHz and 30THz while operating at room temperature. The method also discloses a generalized process for manufacturing circuitry incorporating active and passive micro-electrical-mechanical systems in a silicon wafer.
Abstract:
An infrared sensor comprises a temperature sensor (4) at a top side of a substrate (1) and an infrared filter element (19) located at a bottom side of the substrate (1). A lead frame is placed above the substrate (1) and a housing is cast having a window (42) extending to the filter element (19). A recess (27) in the lead frame (25) provides a large distance between the temperature sensor (4) and the metal of the lead frame (25), thereby reducing thermal conductance. This type of device is easy to manufacture.