Abstract:
A smart window comprising a transparent substrate, a transparent low emittance layer on the transparent substrate, a variable emittance material layer on the substrate or transparent low emittance layer, and a protection material layer on the variable emittance material layer.
Abstract:
The architecture, design and fabrication of array of suspended micro-elements with individual seals are described. Read out integrated circuit is integrated monolithically with the suspended elements for low parasitics and high signal to noise ratio detection of changes of their electrical resistance. Array of individually sealed, suspended micro-elements is combined with signal processing chip that contains nonvolatile memory with sensitivity calibration of all elements and interpolation between non-functional elements. When the micro-elements are infrared light absorbers, image analysis and recognition is embedded in the processing chip to form the infrared imaging solution for infrared cameras.
Abstract:
An infrared camera architecture includes, for an embodiment, an infrared detector, a substrate, a plurality of electrical components coupled to the substrate, and a pedestal made of a thermally conductive material and having a leg coupled to the substrate. The infrared detector is supported by and thermally coupled to the pedestal, with the pedestal thermally isolating the infrared detector from the plurality of electrical components.
Abstract:
This disclosure describes a microbolometer sensor element and microbolometer array imaging devices optimized for infrared radiation detection that are enabled using atomic layer deposition (ALD) of vanadium oxide material layer (VOx) for a temperature sensitive resistor.
Abstract:
A method of manufacturing a semiconductor device includes forming at least one sacrificial layer (106, 108, 110) on a substrate (100) during a complementary metal-oxide-semiconductor (CMOS) process. An absorber layer (130) is deposited on top of the at least one sacrificial layer. A portion of the at least one sacrificial layer (106, 108, 110) beneath the absorber layer is removed to form a gap (G1) over which a portion of the absorber layer is suspended. The sacrificial layer can be an oxide of the CMOS process with the oxide being removed to form the gap using a selective hydrofluoric acid vapor dry etch release process. The sacrificial layer can also be a polymer layer with the polymer layer being removed to form the gap using an O 2 plasma etching process.
Abstract:
An image sensor includes on a support a plurality of first pixels and a plurality of second pixels intended to detect an infrared radiation emitted by an element of a scene. Each of the pixels includes a bolometric membrane suspended above a reflector covering the support, wherein the reflector of each of the first pixels is covered with a first dielectric layer, and the reflector of each of the second pixels is covered with a second dielectric layer differing from the first dielectric layer by its optical properties.
Abstract:
A method of manufacturing a detector capable of detecting a wavelength range [λ8; λ14] centered on a wavelength λ10, including: forming said device on a substrate by depositing a sacrificial layer totally embedding said device; forming, on the sacrificial layer, a cap including first, second, and third optical structures transparent in said range [Δ8; λ14], the second and third optical structures having equivalent refraction indexes at wavelength λ10 respectively greater than or equal to 3.4 and smaller than or equal to 2.3; forming a vent of access to the sacrificial layer through a portion of the cap, and then applying, through the vent, an etching to totally remove the sacrificial layer.
Abstract:
An infrared detector useful in, e.g., infrared cameras, includes a substrate having an array of infrared detectors and a readout integrated circuit interconnected with the array disposed on an upper surface thereof, for one or more embodiments. A generally planar window is spaced above the array, the window being substantially transparent to infrared light. A mesa is bonded to the window. The mesa has closed marginal side walls disposed between an outer periphery of a lower surface of the window and an outer periphery of the upper surface of the substrate and defines a closed cavity between the window and the array that encloses the array. A solder seal bonds the mesa to the substrate so as to seal the cavity.
Abstract:
The architecture, design and fabrication of array of suspended micro-elements with individual seals are described. Read out integrated circuit is integrated monolithically with the suspended elements for low parasitics and high signal to noise ratio detection of changes of their electrical resistance. Array of individually sealed, suspended micro-elements is combined with signal processing chip that contains nonvolatile memory with sensitivity calibration of all elements and interpolation between non-functional elements. When the micro-elements are infrared light absorbers, image analysis and recognition is embedded in the processing chip to form the infrared imaging solution for infrared cameras.
Abstract:
A method of manufacturing a semiconductor device includes forming at least one sacrificial layer on a substrate during a complementary metal-oxide-semiconductor (CMOS) process. An absorber layer is deposited on top of the at least one sacrificial layer. A portion of the at least one sacrificial layer beneath the absorber layer is removed to form a gap over which a portion of the absorber layer is suspended. The sacrificial layer can be an oxide of the CMOS process with the oxide being removed to form the gap using a selective hydrofluoric acid vapor dry etch release process. The sacrificial layer can also be a polymer layer with the polymer layer being removed to form the gap using an O2 plasma etching process.