摘要:
The invention relates to a hybrid RC element and to a simple method of manufacturing such an element. The inventive hybrid RC element comprises a capacitor body and a resistor body. Said element is characterized in that it includes a block-shaped, ceramic capacitor body which is provided with a contact layer on two parallel surfaces, and in that a block-shaped, ceramic resistor body is provided on one of said contact layers, the surface of the resistor body facing away from the capacitor body also being provided with a contact layer. The resistor body is preferably made from doped Si. The inventive hybrid RC element is very suitable for applications in which the element is exposed to high voltage pulses (1 kV or more). Unlike the known hybrid RC elements, the element in accordance with the invention is not subject to short-circuits under these conditions.
摘要:
A carrier substrate (100) with laser sources includes a transparent center substrate (20), an upper substrate (30) adhered to the center substrate having openings (40) formed therein to expose the center substrate on a first side, and a lower substrate (32) adhered to the center substrate on a second side opposite the first side and having openings (42) formed therein to expose the center substrate on the second side, the openings on the lower substrate corresponding to positions of the openings in the upper substrate. Frequency conversion elements (60) are disposed on the center substrate within the openings of the lower substrate. Laser dies (70) are aligned to the frequency conversion elements and coupled to the lower substrate to provide light though the frequency conversion elements and the center substrate during operation. Methods for fabrication are also disclosed.
摘要:
The present invention relates to a method for manufacturing an electronic assembly (50) comprising an electronic component, a cavity and a substrate which method comprises; —providing an electronic component (10) having a first pattern with a substantially closed configuration; —providing a cover (18) on a surface of the electronic component, which cover together with said surface defines a cavity (20), the closed configuration of the first pattern substantially enclosing the cover at said surface; —providing a substrate (30) having a second pattern with a substantially closed configuration, which closed configuration at least partially corresponds to the closed configuration of the first pattern and comprises a solder pad; —disposing solder material at the solder pad; —positioning the electronic component and the substrate so as to align both the substantially closed configurations of the first and second pattern, while the substrate supports a top surface (28) of the cover; —reflow-soldering the solder material, therewith providing a soldered connection (52) between the first and second pattern. Furthermore the present invention relates to an electronic assembly (50), a cover (18) and a substrate (30).
摘要:
An X-ray examination apparatus of this invention comprises an X-ray source, an X-ray detector and an X-ray filter which is located between the X-ray source and the X-ray detector. The X-ray filter includes filter elements, notably capillary tubes, and the X-ray absorption of separate filter elements can be controlled by controlling a quantity of X-ray absorbing liquid in the respective filter elements. The quantity of X-ray absorbing liquid in the individual filter elements is controlled by way of electric voltages applied to the individual filter elements. The filter elements are formed as spaces between deformed foils which are arranged in a stack which is expanded in the direction transversely of the foils. Adjacent foils are locally attached to one another along seams. The stack is arranged between rigid plates and buffer elements are provided between the rigid plates and the stack. The buffer elements are contractable in the direction transversely to the direction of expansion of the stack. The shape of the cross-section of the capillary tubes is dependent on the ratio of the width of the seams to the spacing of the seams.
摘要:
The present invention relates to a method for manufacturing an electronic assembly (50) comprising an electronic component, a cavity and a substrate which method comprises; —providing an electronic component (10) having a first pattern with a substantially closed configuration; —providing a cover (18) on a surface of the electronic component, which cover together with said surface defines a cavity (20), the closed configuration of the first pattern substantially enclosing the cover at said surface; —providing a substrate (30) having a second pattern with a substantially closed configuration, which closed configuration at least partially corresponds to the closed configuration of the first pattern and comprises a solder pad; —disposing solder material at the solder pad; —positioning the electronic component and the substrate so as to align both the substantially closed configurations of the first and second pattern, while the substrate supports a top surface (28) of the cover; —reflow-soldering the solder material, therewith providing a soldered connection (52) between the first and second pattern. Furthermore the present invention relates to an electronic assembly (50), a cover (18) and a substrate (30).
摘要:
The frame (1) comprises an intermediate layer (5) sandwiched between a first layer (3) with a first pattern and a second layer (4) with a second pattern. Adhesion layers (2,12) are present on the first and second layer (3,4) respectively. The patterns are defined such that bumping portions (31) and a cap (21) are defined. The intermediate layer (5) is continuous and extends over spaces (25) between bumping portions (31) and the cap (21), so as to prevent disintegration. The frame is assembled to a device (50) with an electronic element (52), such as a MEMS element. The cap (21) then encapsulates a cavity (60) over the element (52).
摘要:
An X-ray filter comprises an array of filter elements (5) an control circuit, the control circuit comprising an array of switching devices (33) provided on a common substrate (52), a switching device (33) being provided for each filter element for switching a control signal to the respective filter element. An output terminal of each switching device is provided with an external connection portion (54) located at the respective switching device. An array of external connection portions (54) is thus provided over the array of switching devices (33). The connection portions are then bonded to a connection block of the array of filter elements. This avoids the need to use edge connections of the substrate (52), and provides a secure mechanical and electrical connection between the control circuit and the filter array.
摘要:
A microelectronic package (31) has a microelectronic device, which is encapsulated in a quantity of material (27), and a lead frame element (15) for enabling the microelectronic device to be electrically contacted from outside of the package (31). The lead frame element (15) comprises at least two elongated members (11) comprising electrically conductive material and a filling material (12) comprising electrically insulating material, wherein the members (11) are partially embedded in the filling material (12). The lead frame element (15) is manufactured by providing elongated members (11), positioning the members (11) according to a predetermined configuration, providing filling material (12) to spaces (13) which are present between the members (11), and possibly removing portions of the filling material (12) and the members (11) in order to expose the electrically conductive material of the members (11). An important advantage of manufacturing the lead frame element (15) on the basis of elongated members (11) and a filling material (12) is that no waste or only a small quantity of waste is produced.
摘要:
An ultrasound transducer 10 comprises an application specific integrated circuit (ASIC) 14, an array of acoustic elements 20, and a pitch independent interposer 12. The ASIC 14 includes a plurality of contact pads 16 on a surface of the ASIC that are separated from adjacent ones thereof by a first pitch. The acoustic elements 22 of the array 20 are separated from adjacent ones thereof by a second pitch. In addition, the pitch independent interposer 12 features a plurality of conductive elements 26 separated from adjacent ones thereof by a third pitch different from both the first pitch and the second pitch. The pitch independent interposer 26 is electrically coupled (i) on a first side to the ASIC via a first subset of the plurality of conductive elements and (ii) on a second side to the array of acoustic elements via a second subset of the plurality of conductive elements, wherein one or more of the plurality of conductive elements 26 electrically couples a contact pad 16 of the ASIC 14 with a corresponding acoustic element 22 of the array 20 of acoustic elements.
摘要:
A microelectronic package (31) has a microelectronic device, which is encapsulated in a quantity of material (27), and a lead frame element (15) for enabling the microelectronic device to be electrically contacted from outside of the package (31). The lead frame element (15) comprises at least two elongated members (11) comprising electrically conductive material and a filling material (12) comprising electrically insulating material, wherein the members (11) are partially embedded in the filling material (12). The lead frame element (15) is manufactured by providing elongated members (11), positioning the members (11) according to a predetermined configuration, providing filling material (12) to spaces (13) which are present between the members (11), and possibly removing portions of the filling material (12) and the members (11) in order to expose the electrically conductive material of the members (11). An important advantage of manufacturing the lead frame element (15) on the basis of elongated members (11) and a filling material (12) is that no waste or only a small quantity of waste is produced.