This document describes techniques and apparatuses that implement a high thermal conductivity region for optoelectronic devices. In some embodiments, a printed circuit board (PCB) includes a high thermal conductivity region that extends through the PCB. The high thermal conductivity region has first and second surfaces that are approximately coplanar with exterior layers of the PCB. A side-emitting optoelectronic device is mounted to the first surface of the high thermal conductivity region via conductive material that enables conduction of the device's heat into the high thermal conductivity region. The high thermal conductivity region can then transfer the heat away from the device and toward the second surface of the high thermal conductivity region, thereby improving the device's thermal performance.

The invention relates to a circuit carrier (1) comprising a plurality of inorganic substrate layers (1.1) that have partial metallisations (1.2, 1.3, 1.4, 1.5, 1.6) for the purpose of electrical and/or thermal conduction, and to a corresponding method for producing such a circuit carrier (1). According to the invention, at least one partial metallisation is made in the form of an insert (1.2) that fills a corresponding shaped hole (1.7) introduced into one of said inorganic substrate layers (1.1).

A manufacturing method of a package carrier is provided. A substrate having a through hole is provided, wherein a profile of the through hole from top view is a first rounded rectangular. A heat conducting slug is disposed inside the through hole, wherein the heat conducting slug and an inner wall of the through hole are separated with a gap, and a profile of the heat conducting slug from top view is a second rounded rectangular. An insulating material is filled in the through hole so as to fix the heat conducting slug in the through hole. A conductive through hole structure, a first and a second patterned circuit layers are formed. The first and the second patterned circuit layers are respectively formed on two opposite sides of the substrate. The conductive through hole structure penetrates the substrate and connects portions of the first and the second patterned circuit layers.

A chip packaging includes a substrate, a first chip, a molding material, a first circuit, and a second circuit. The substrate includes a bottom surface, a first top surface disposed above the bottom surface with a first height, and a second top surface disposed above the bottom surface with a second height. The first height is smaller than the second height. The first chip is disposed on the first top surface. The molding material is disposed on the substrate and covers the first chip. The first and second circuits are disposed on the molding material, and are respectively and electrically connected to the first chip and the second top surface of the substrate. The substrate is made of copper material with huge area and has the properties of high current withstand capacity and high thermal efficiency. The second top surface protects the first chip from damage.

The method for manufacturing a printed circuit board element (10) having an inlay (16) and a current sensor (30) for determining a current flowing in the inlay (16), wherein, for the improvement of the positional accuracy of the inlay (16) relative to the current sensor (30), the method comprises the following steps: providing a layer (12) of printed circuit board material having a recess (14), providing an inlay (16) having an inlay outline, inserting the inlay (16) in the recess (14); embedding the inlay (16) in the recess (14); completing and laminating the layered printed circuit board structure; applying at least two alignment markings (M1, M2) on an uppermost printed circuit board layer (AL); forming a defined cross-section tapering (S) on the inlay outline, the tapering being aligned with the at least two alignment markings (M1, M2); applying an assembly marking for a current sensor (30) on an uppermost printed circuit board layer (AL), the assembly marking being aligned with the at least two alignment markings (M1, M2).

A circuit substrate includes a core substrate having cavity penetrating through the core substrate, a metal block accommodated in the cavity of the core substrate, a first build-up layer including an insulating layer and laminated on first side of the core substrate such that the first build-up layer is covering the cavity on the first side of the core substrate, and a second build-up layer including an insulating layer and laminated on second side of the core substrate such that the second build-up layer is covering the cavity on the second side of the core substrate, and a filling resin filling gap formed between the cavity and block positioned in the cavity of the core substrate. The block has roughened surfaces such that the roughened surfaces are in contact with the insulating layers in the first and second build-up layers on the first and second sides of the core substrate.

A power module includes a substrate, a first sub-module and a second sub-module. The substrate includes plural first conducting parts, plural second conducting parts and a third conducting part. The first sub-module is disposed on the substrate, and includes a first semiconductor switch, a first diode, a first electrode, a second electrode and a third electrode. The first electrode and the second electrode are electrically connected with the corresponding first conducting parts. The third electrode is electrically connected with the third conducting part. The second sub-module is disposed on the substrate, and includes a second semiconductor switch, a second diode, a fourth electrode, a fifth electrode and a sixth electrode. The fourth electrode and the fifth electrode are electrically connected with the corresponding second conducting parts. The sixth electrode is electrically connected with the third conducting part.

Representative implementations of devices and techniques provide improved electrical performance of components, such as chip dice, for example, disposed on different layers of a multi-layer printed circuit board (PCB). In an example, the components may be embedded within layers of the PCB. An insulating layer located between two component layers or sets of layers includes a conductive portion that may be strategically located to provide electrical connectivity between the components. The conductive portion may also be arranged to improve thermal conductivity between points of the PCB.

A method for manufacturing a PCB with an embedded thermal conductor and a PCB are provided. A sheet of copper-clad ceramic serves as a thermal conductor. A sheet of copper foil having no opening serves as an outer layer of a laminate. A part of the sheet of copper foil covering the thermal conductor is removed after a lamination process, to expose a conductive layer as the outer layer of the thermal conductor. Finally, the outer layer pattern is formed. The sheet of copper foil has no opening before the lamination process, so that the sheet of copper foil has good flatness during the lamination process, thereby avoiding wrinkles. Moreover, the sheet of copper-clad ceramic serves as the thermal conductor, so that a pattern is manufactured on the outer layer of the thermal conductor based on the exposed conductive layer.

Printed circuit board arrangement (10) for a motor vehicle headlight, comprising a printed circuit board (50) and a heat sink (60), which are spaced apart from one another by a distance (X) at least in some areas in such a way that a gap (70) is formed between the printed circuit board (50) and the heat sink (60), wherein the printed circuit board (50) is attached to the heat sink (60) with at least one attachment device (80) while maintaining the gap (70), wherein the at least one attachment device (80) comprises the following: an attachment opening (100), which attachment opening (100) completely passes through the printed circuit board (50), a recess (200), which is arranged on the heat sink (70), and which has an insertion opening (210), an attachment element (300) with a longitudinal axis (A), wherein
through exertion of a force (F) on an engagement section (310) and an opposing force on a contact section (320), the attachment element (300) is deformed in such a way that the attachment element (300) is clamped in the recess (200) in a form-fitting manner and a first and a second widening section (330a, 330b) of the attachment element (300) is formed, wherein the first widening section (330a) extends into the gap (70) and beyond the opening size of the attachment opening (100) such that the first widening section (330a) supports the printed circuit board (50), wherein the second widening section (330b) extends radially to the longitudinal axis (A) beyond the opening size.