A back plate assembly includes a base plate formed with a groove having a bottom wall and a pair of side walls opposite to each other in a first horizontal direction, and an arch plate assembled into the groove and having a pair of opposite ends in the first horizontal direction. A pair of end surfaces of the ends of the arch plate abut against the side walls and a part of a middle portion of the arch plate between the ends is not in contact with the bottom wall of the groove.

An electronic component unit includes a heatsink, a substrate on which electronic component is installed, a fixing metal fitting that fixes the electronic component and the substrate to the heatsink, and a fastening member that fixes the fixing metal fitting to the heatsink, and the heatsink includes a body portion, and a fixing portion that is projecting from the body portion toward the substrate side and to which the fixing metal fitting is fixed, and the substrate includes a through-hole that the fixing portion penetrates through, and the fixing metal fitting includes a base portion that contacts the fixing portion and is fixed to the fixing portion by the fastening member, and a pressing portion that extends from one end of the base portion, elastically deforms with respect to the base portion, and presses the electronic component toward the substrate side.

An integrated circuit (IC) chip module includes a carrier, a stiffening frame, an IC chip, a first directional heat spreader, and a second directional heat spreader. Presented herein is a fabrication method that includes attaching the stiffening frame to the carrier. The stiffening frame includes a central opening, a base portion, a first pair of opposing sidewalls, and a second pair of opposing sidewalls. The method includes electronically coupling the semiconductor chip to the carrier concentrically arranged within the central opening. The method includes thermally contacting the first directional heat spreader to the semiconductor chip. The first directional heat spreader transfers heat from the semiconductor chip towards the first pair of opposing sidewalls. The method includes thermally contacting the second directional heat spreader to the first directional heat spreader. The second directional heat spreader transfers heat from the first directional heat spreader towards the second pair of opposing sidewalls.

A multi-layer thermal interface material including two or more thermal interface materials laminated together, where each of the two or more thermal interface materials comprise different mechanical properties.

A heat dissipation device includes a first radiator, a second radiator, and a first connecting device. The first radiator and second radiator are fastened onto a printed circuit board (PCB) by the first connecting device. The first radiator is over a first electronic device, and the second radiator is over a second electronic device. The first connecting device includes a first fixing pipe, a first fixing post and a first elastic element. The first radiator is fixed with the first fixing pipe, the first fixing post is sleeved in the first fixing pipe, an upper surface of the first fixing pipe abuts against a lower surface of a first convex portion of the first fixing post, a lower surface of the first fixing pipe abuts against an upper surface of the PCB, and the first fixing post extends through the second radiator and the first radiator from top to bottom.

A heat dissipator structure includes a heat-dissipation base and a conductive metal block. The heat-dissipation base includes a substrate and a plurality of heat-dissipating fins disposed on the substrate. A receiving portion and a limit sliding block are disposed on the substrate, with the limit sliding block disposed on the receiving portion and movable within a restrictive interval. The conductive metal block includes a body portion, an assembling portion disposed beside the body portion, and a heat dissipation plane disposed on the body portion to face away from the assembling portion and be in contact with an electronic component, with the assembling portion disposed on the receiving portion, a positioning slot disposed on the assembling portion to hold the limit sliding block laterally and keep the heat dissipation plane flat, and at least one resilient unit disposed between the assembling portion plane and the receiving portion plane to provide resilient support to the conductive metal block.

A case and an electronic device having the case are provided according to the present application. A fan is arranged on a case wall of the case, an air inlet and an air outlet in communication with the air inlet are arranged in the case wall. The fan is arranged inside the case and is located between the air inlet and the air outlet. Each of the fan is mounted in a bottom-to-top manner with its air inlet facing downwards and its air outlet facing upwards. The air inlet is located at a lower end of the case, the air outlet is located at an upper end of the case, and an air duct from bottom to top is formed by the air inlet, the fan and the air outlet.

A method includes electrically connecting an IC chip module to a motherboard and thermally contacting a heat sink to the IC chip module. The IC chip module includes a carrier comprising a top surface and a bottom surface configured to be electrically connected to the motherboard. The IC chip module includes a stiffening frame attached to the carrier top surface. The stiffening frame includes a base portion that has a central opening and a plurality of opposing sidewalls. The IC chip module further includes a semiconductor chip electrically connected to the carrier top surface and concentrically arranged within the central opening. The IC chip module further includes a first directional heat spreader thermally contacting the semiconductor chip. The first directional heat spreader includes a directionally thermally conductive material arranged to efficiently transfer heat from the semiconductor chip in a first opposing bivector direction towards first opposing sidewalls.

A leaf spring is disposed between a circuit board and a upper shield. The leaf spring biases a heat sink toward the circuit board through a connecting member. The leaf spring is not electrically connected to the upper shield. According to this structure, an integrated circuit and the heat sink can be contacted with each other with certainty. Further, generation of unnecessary radiation can be suppressed effectively.

A back plate assembly includes a base plate formed with a groove having a bottom wall and a pair of side walls opposite to each other in a first horizontal direction, and an arch plate assembled into the groove and having a pair of opposite ends in the first horizontal direction. A pair of end surfaces of the ends of the arch plate abut against the side walls and a part of a middle portion of the arch plate between the ends is not in contact with the bottom wall of the groove.