Abstract:
A substrate spacing member includes a spacer portion which is disposed between the two substrates in contact with both edge portions thereof to keep a distance between the two substrates constant" spacer member holding portions which hold the spacer members, a frame body portion that connects the spacer member holding portions to each other, a branch portion which extends toward a predetermined position between the two substrates from the frame body portion or the spacer member holding portions, and electrode holding portions which are provided at the branch portions, and hold electrodes at the predetermined positions.
Abstract:
There is disclosed a mobile terminal including a display unit comprising a drive IC provided in a predetermined portion, a frame provided in a rear surface of the display unit, a flexible printed circuit board having one portion connected to the drive IC of the display unit and the other portion bent toward the rear surface of the display unit, a main board coupled to the frame and configured to control the drive IC via the flexible printed circuit board, and a heat transfer sheet configured to cover a front surface of the display unit and a predetermined portion of the first surface of the flexible printed circuit board, wherein at least predetermined portion of the heat transfer sheet is in contact with the frame, so that the heat generated in the drive IC and the light source of the display unit may be transferred to the frame and that the performance deterioration of the mobile terminal caused by the local overheat may be reduced and the difficulty in the user's holding the mobile terminal may be also reduced.
Abstract:
A circuit board assembly (10) includes a low-frequency (LF) substrate (12), a monolithic microwave integrated circuit (MMIC (22)), electrical components (26), a high-frequency (HF) substrate (30), and an antenna (46). The LF substrate (12) is formed of FR-4 type material. The LF substrate (12) defines a waveguide (18) through the LFsubstrate (12). The MMIC (22) is attached to the top-side (14) of the LF substrate (12) and outputs a radio-frequency signal (20). The electrical components (26) are electrically attached to the LF substrate (12). The HF substrate (30) is soldered to the top side of the LF substrate (12). An opening (38) through the HF substrate (30) surrounds the MMIC (22). A vertical transition (44) guides the radio-frequency signal (20) output by the MMIC (22) to the waveguide (18). A plurality of wire bonds (40) electrically connects the MMIC (22) to the HF substrate (30) and couple the radio-frequency signal (20) from the MMIC (22) to the vertical transition (44). The antenna (46) is attached to the LF substrate (12) and configured to radiate the radio-frequency signal (20) from the waveguide (18).
Abstract:
Disclosed is an organic EL illumination device-which is provided with: an organic EL element (13) on a glass substrate (10); and a plurality of anode terminal electrodes (11) and cathode terminal electrodes (12) for evenly supplying current to the aforementioned organic EL element (13) on the aforementioned glass substrate (10)-wherein the organic EL illumination device is provided with a wiring board (1) to which a circuit having anode wiring (1a) corresponding to the position of each of the aforementioned anode terminal electrodes (11), and a circuit having cathode wiring (1b) corresponding to the position of each of the aforementioned cathode terminal electrodes (12) are formed.
Abstract:
A wiring board (20) includes a component-side patters (23) formed on a components mounting surface (22), a board-side pattern (25) is formed on a board mounting surface (24), a through hole via (26) electrically connecting the component-side pattern (23) and the board-side pattern (25). An electric insulation sheet (30) is adhered to the board mounting surface (24) to cover the through hole via (26) in the board mounting surface (24).
Abstract:
The invention relates to a process for producing a printed circuit board comprising at least two elementary circuits (CE1, CE2) drilled with metallised holes (T CE1 ) the apertures of which are covered with a first metal and at least one first intermediate layer (Cl1) made of a compressible material drilled with holes (T C11 ) opposite elementary circuits (CE1, CE2) and the apertures of which are covered with a second metal, said first intermediate layer (Cl1) being placed between the two elementary circuits (CE1, CE2) and brazed to each of the circuits (CE1, CE2) by thermal diffusion of two metals forming an alloy at an alloy formation temperature (T). At least two second intermediate thermoplastic layers (CI2a, CI2b) having a melting point (Tf) above the alloy formation temperature (T) are provided between the first intermediate layer (Cl1) and said elementary circuits (CE1, CE2), these second layers not covering the first and second metal.
Abstract:
The present invention relates to an electric and/or electronic circuit including a printed circuit board (20), at least one separate circuit board (10) and at least one power connector (12) for said printed circuit board (20). The at least one power connector (12) is connected or connectable to a corresponding counterpart. A number of electric and/or electronic components (22) is sold at the separate circuit board (10). The at least one separate circuit board (10) is connected to the printed circuit board (20) by a number of solder joints (16). The solder joints (16) are connected to the separate circuit board (10) by a through-hole-technology. The solder joints (16) are connected to the printed circuit board (20) by SMD (surface mount device) technology. At least one power connector (12) is fastened at the separate circuit board (10) by the through-hole-technology.
Abstract:
A circuit board having a board-to-board connector and a method of manufacturing the same are provided. The circuit board includes at least one of a recess and a hole having a connection portion exposed to be electrically connected to a connection portion of a connector header of another circuit board, a terminal on the circuit board, and a conduction line for connecting the terminal and the connection portion. Thereby, a cost and required space for a board-to-board connection can be reduced.
Abstract:
In a method for integrating a component (3) into a printed circuit board, the following steps are provided: - providing two completed printed circuit board elements (1, 4), which more particularly consist of a plurality of interconnected plies or layers (6, 7, 8), wherein at least one printed circuit board element (4) has a cutout or depression (10), - arranging the component (3) to be integrated on one of the printed circuit board elements (1) or in the cutout of the at least one printed circuit board element, and - connecting the printed circuit board elements (1, 4) with the component (3) being accommodated in the cutout (10), as a result of which it is possible to obtain secure and reliable accommodation of a component or sensor (3) in a printed circuit board. Furthermore, a printed circuit board of this type comprising an electronic component (3) integrated therein is provided.
Abstract:
A cathode ray tube has a thin flexible circuit (48) comprising one or more films of polyimide with a plurality of conductive tracks deposited directly thereon for establishing electrical connection between a multi-pin leadthrough (45) passing through the wall of the tube's envelope (31) and terminals of electrically operable components within the envelope, e.g. electron gun (35) and beam-deflection electrodes (36,39 and 40). A number of track-carrying films may be stacked together to form a laminate structure. Such a flexible circuit avoids outgassing problems and, being thin and flexible, occupies minimal space and is easily routed around internal components to ease assembly