摘要:
The invention relates to a method of manufacturing a semiconductor device with a pn junction, whereby an epitaxial layer (2) with a first zone (3) of a first conductivity type and with a second zone (4) of a second conductivity type opposed to the first is provided on a silicon substrate (1), a pn junction (5) being formed between the second and first zones (3, 4, respectively). According to the invention, the method is characterized in that the epitaxial layer (2) is provided by means of a CVD process at a temperature below 800.degree. C., the epitaxial layer (2) being provided in that first the first zone (3) and then the second zone (4) are epitaxially provided on the substrate (1), while no heat treatments at temperatures above 800.degree. C. take place after the epitaxial layer (2) has been provided. The measure according to the invention renders it possible to achieve properties of semiconductor devices manufactured in accordance with the invention, for example the capacitance-voltage (CV) relation of varicap diodes, within wide limits according to specifications. In addition, semiconductor devices manufactured by the method according to the invention require no post-diffusion or measurement steps in order to bring the properties of the semiconductor device up to specifications.
摘要:
A method of manufacturing a semiconductor device with an epitaxial semiconductor zone, whereby a first layer of insulating material, a first layer of non-monocrystalline silicon, and a second layer of insulating material are provided in that order on a surface of a silicon wafer, a window with a steep wall is etched through the second layer of insulating material and the first layer of non-monocrystalline silicon, the wall of the window is provided with a protective layer, the first insulating layer is selectively etched away within the window and below an edge of the first layer of non-monocrystalline silicon adjoining the window such that both the edge of the first layer of non-monocrystalline silicon itself and the surface of the wafer become exposed within the window and below said edge, semiconductor material is selectively deposited such that the epitaxial semiconductor zone is formed on the exposed surface of the wafer, and an edge of polycrystalline semiconductor material connected to the epitaxial semiconductor zone is formed on the exposed edge of the first layer of non-monocrystalline silicon, an insulating spacer layer is provided on the proctective layer on the wall of the window, and a second layer of non-monocrystalline silicon is deposited. The provision of a top layer of a material on which non-monocrystalline semiconductor material will grow during the selective deposition of the semiconductor material, which top layer is provided on the second layer of insulating material before the selective deposition of the semiconductor material, achieves that the selective deposition process can be better monitored.
摘要:
The present invention relates to an integrated electronic-microfluidic device an integrated electronic-microfluidic device, comprising a semiconductor substrate (106) on a first (122) support, an electronic circuit (102, 104) on a first semiconductor-substrate side of the semiconductor substrate, and a signal interface structure to an external device. The signal interface structure is arranged on the first semiconductor-substrate side and configured to receive electrical signals from the electronic circuit. A microfluidic structure (126) is formed in the semiconductor substrate, and is configured to confine a fluid and to allow a flow of the fluid to and from the microfluidic structure only on a second semiconductor-substrate side that is opposite to the first semiconductor-substrate side and faces away form the first support. The electronic-microfluidic device forms a flexible platform for the formation of various System-in-Package applications. It achieves a clear separation between electrical and wet-chemical interfaces. The claimed method for fabricating the device of the invention also allows a simple formation of thermally isolated microfluidic structures.
摘要:
An elongate device (e.g. a catheter) for interventional MRI has one or more passive LC-circuits (wireless markers) attached to its distal tip portion for position tracking. The LC-circuits comprise an inductor winding (480) and a three-dimensional “trench” capacitor (420-440) and are integrated in a piece of silicon (410). Optical fibres may be included in the device for optical probing of tissue surrounding the distal tip portion.
摘要:
Disclosed is a device for determining the cardiotoxicity of a chemical compound, comprising a substrate (10) carrying a deformable stack (34), said stack being partially detached from the substrate by a cavity (32) allowing an out-of-plane deformation of the stack, said stack comprising a first deformable layer (16), a second deformable layer (20) and a multi-electrode structure (18) sandwiched between the first and second deformable layers, the second deformable layer carrying a pattern of cardiomyocytes (28) adhered thereto; and a liquid container (26) mounted on the substrate for exposing the cardiomyocytes to the chemical compound. A method of manufacturing such a device is also disclosed. The present invention further relates to the use of the device for drug target discovery and/or drug development and a method for developing a disease model for a disease that is caused by or modified by stretching of cells, in particular a cardiac disease model.
摘要:
An integrated-circuit device includes a rigid substrate island having a main substrate surface with a circuit region circuit elements and at least one fold structure. The fold structure is attached to the substrate island and is unfoldable from a relaxed, folded state to a strained unfolded state. The fold structure contains at least one passive electrical component. The fold structure further has in its folded state at least one surface with an area vector that includes a non-vanishing area-vector component in a direction parallel to the main substrate surface, which area-vector component is diminished or vanishes when deforming the fold structure from the folded into the unfolded state.
摘要:
The present invention relates to a luminaire comprising an array of LEDs emitting light of at least one color, and a control system for controlling the light output of the luminaire. The control system comprises photosensor array for detecting light output of the luminaire. An imaging unit is arranged in front of the photosensor array such that it maps an image of said array of LEDs on said photosensor array. The photosensor array is divided into subareas each detecting light output from a single one of the LEDs. The control system uses the output of the subareas for controlling the luminaire light output. Thus, it is possible to act on different LED light colors or the light output of individual LEDs without having to separate them in time by means of a time pulsing method.
摘要:
The present invention relates to a light-emitting device comprising a substrate, a circuitry, a LED in electrical connection with said circuitry, and a heat sink arranged to transport heat away from the LED, wherein the LED is in thermal contact with said heat sink through an opening in said substrate. The present invention also relates to methods for the manufacture of such a device.
摘要:
An integrated-circuit device is provided, which comprises a rigid substrate island having a main substrate surface with a circuit region circuit elements and at least one fold structure. The fold structure is attached to the substrate island and is unfoldable from a relaxed, folded state to a strained unfolded state. The fold structure contains at least one passive electrical component. The fold structure further has in its folded state at least one surface with an area vector that includes a non-vanishing area-vector component in a direction parallel to the main substrate surface, which area-vector component is diminished or vanishes when deforming the fold structure from the folded into the unfolded state. The fold structure provided by the present invention allows fabricating the integrated-circuit device with small lateral extensions and thus takes up a particularly small amount of chip area, which reduces the cost per device.
摘要:
The invention relates to a remotely readable electronic device (10), particularly an implantable device, with an O associated reader (20). The device comprises a resonance circuit (12) that can selectively be set into one of at least three different resonance states, wherein this state can wirelessly be sensed by the remote reader. In a particular embodiment, the resonance circuit (12) comprises two capacitors (C1, C2) that can selectively be connected or disconnected to the resonance circuit (12). The reader (20) preferably scans a given frequency range to detect spectral absorption patterns that correspond to certain resonance states of the resonance circuit (12).