Abstract:
The invention relates to an optoelectronic component comprising a metal core circuit board (5) that has a metal core (6), a dielectric layer (7) that is applied to the metal core (6) and an electrically conductive layer (8) that is applied to the dielectric layer (7), and a chip support (1) that is connected to the metal core circuit board (5). Said chip support (1) has a first main surface (2) on which at least one optoelectronic semi-conductor chip (4) is arranged, and a second surface (3) that is oriented towards the metal core circuit board (5). The chip support (1) on the second main surface (3) is connected to the metal core (6) of the metal core circuit board (5) by means of a soldered connection (12). The dielectric layer (7) and the electrically conductive layer (8) are arranged at a distance from the metal core (6) in the region of soldered connection (12).
Abstract:
A liquid crystal module includes: a liquid crystal cell; a flexible circuit board which is joined to outer peripheral portion of the liquid crystal cell; a circuit board (23a,23b) which is joined to the flexible circuit board; a frame portion (2) on which the circuit board is fixed by screw (32) fastening; at least one protruding portion (31a,31b) which protrudes to the circuit board side with regard to a surface of the frame portion on which the circuit board is attached, and which prevents rotation of the circuit board along with rotation of the screw by contacting with the circuit board.
Abstract:
An electronic assembly 10 is provided, including a substrate 12 having a first side 14, a second side 16, and at least one opening 18, and a power device 20 mounted on said first side 14, positioned over said at least one opening 18, and in thermal communication with said at least one power device 20 through the at least one opening 18.
Abstract:
Das Verfahren dient zur Bearbeitung einer Leiterplatte (10), die einen metallenen Kühlkörper (2) aufweist, der mittels wenigstens einer Isolationsschicht (1) mit wenigstens einer strukturierten Metallschicht (3) verbunden ist, welche für eine elektronische Schaltung vorgesehene Leiterbahnen (31, 32, 33) und wenigstens einen Kühlanschluss oder einen Masseanschluss (34) bildet, der zur Abschirmung und einer zusätzlichen Wärmeableitung gegen elektromagnetische Wellen mit dem Kühlkörper (2) verbunden wird. Dabei wird Material (202) des Kühlkörpers (2) im Bereich des Kühlanschlusses oder des Masseanschlusses (34) durch die Isolationsschicht (1) und die Metallschicht (3) hindurch gedrückt und mittels Gegendruck in Richtung zur Metallschicht (3) derart gegengepresst, dass es die Metallschicht (3) partiell überlappt und kontaktiert, wodurch eine Verbindung (8) mit minimalem thermischen und elektrischen Übergangswiderstand zwischen dem Kühlkörper (2) und der Metallschicht (2) geschaffen wird.
Abstract:
Un procédé d'assemblage consiste i) à prendre une plaque de base (1) munie, en des endroits choisis, de plots saillants (2,3) définissant entre eux au moins des premières zones de dimensions choisies, ii) à déposer des moyens d'adhésion (8) dans certaines au moins des premières zones, iii) à déposer un substrat choisi (6) dans certaines au moins des premières zones, iv) à appliquer une pression choisie simultanément sur les substrats (6) pour les solidariser à la plaque de base (1) à l'aide des moyens d'adhésion (8), et v) à solidariser des composants électroniques (9) au sommet de certains au moins des plots (3), puis à établir des liaisons électriques (11) entre les composants (9) et les substrats (6) situés dans leur voisinage.
Abstract:
The invention concerns the surface mounting of a backset microwave package on a printed circuit. After the package (L1, L2, 1, 2, 3) has been accurately positioned against the printed circuit (L1', L2', 6, 7, 8), the connections are produced by soldering (S) the conducting elements (L1-L1', L2-L2') in direct contact. The chip (P) is enclosed in a sort of cage constituting a screen which replaces the conventional cover; said cage is formed by layouts (2-3, 7-8) borne respectively by the package and the printed circuit and linked together by metal links (Ha-Ha', Hb-Hb'). The invention is particularly applicable to packages operating in millimetric microwaves.
Abstract:
Eine Schaltungsanordnung weist einen als flexibler Leiterbahnträger ausgelegten Schaltungsträger (1) und auf dem Schaltungsträger (1) angeordnete elektrische Bauelemente (6) auf. Der Schaltungsträger (1) ist im Bereich unterhalb der elektrischen Bauelemente (6) mit einer Aussparung (8) versehen und die elektrischen Bauelemente sind durch die Aussparung (8) hindurch mittels eines wärmeleitenden Klebers (12) thermisch mit einer Wandfläche (3) eines die Schaltungsanordnung umgebenden Gehäuses gekoppelt.
Abstract:
The invention concerns the surface mounting of a backset microwave package on a printed circuit. After the package (L1, L2, 1, 2, 3) has been accurately positioned against the printed circuit (L1', L2', 6, 7, 8), the connections are produced by soldering (S) the conducting elements (L1-L1', L2-L2') in direct contact. The chip (P) is enclosed in a sort of cage constituting a screen which replaces the conventional cover; said cage is formed by layouts (2-3, 7-8) borne respectively by the package and the printed circuit and linked together by metal links (Ha-Ha', Hb-Hb'). The invention is particularly applicable to packages operating in millimetric microwaves.
Abstract:
A package for power converters in which a multilayers circuit board holds the components. The winding of the magnetic elements are incorporated in the multilayers circuit board. The top and some portions of the bottom layers are also support for electronic components. Some of the components are placed on the top layer, which may not be utilized for magnetic winding, reducing the footprint of the magnetic core (26a). The power dissipating devices placed on pads which have a multitude of copper coated via connecting the top to bottom layers. Through these via the heat is transferred from the power devices to the other side of the PCB. In some of the embodiments of this invention the heat can be further transferred to a metal plate connected to the multilayers circuit board via a thermally conductive insulator. The base plate has cutouts or cavities to accomodate the magnetic cores. A thermally conductive material is placed between the magnetic core (26a) and the metal plate on the bottom of the cavity.