Abstract: A carrier structure is provided with a plurality of package substrates connected via connecting sections, and a functional element and a groove are formed on the connecting section, such that the groove is located between the package substrate and the functional element. Therefore, when a cladding layer covering a chip is formed on the package substrate, the groove can accommodate a glue material overflowing from the cladding layer to prevent the glue material from contaminating the functional element.

Abstract: A centrifugal fan includes a housing and an impeller rotatably received in the housing. The housing defines an air inlet in a top plate thereof and an air outlet in a sidewall thereof. The air inlet is perpendicular to the air outlet. The impeller includes a hub and a plurality of blades extending outwardly from a sidewall of the hub. Each of the blades includes an inner blade section connected with the sidewall of the hub and an outer blade section extending outwardly from the inner blade section. An upper portion of the inner blade section is curved upwardly and forwardly from a curved lower portion of the inner blade section towards an adjacent front blade. The curved lower portion has a curvature smaller than that of the upper portion.

Abstract: An electronic device includes a first electronic component, a second electronic component adjacent to the first electronic component, a heat sink arranged on the first electronic component to absorb heat therefrom, an axial fan mounted on the heat sink for generating an airflow to the heat sink, and a guiding member. The axial fan includes a frame and an impeller received in the frame. A cutout is defined in the frame facing the second electronic component. The guiding member is arranged between the axial fan and the second electronic component for guiding a part of the airflow escaping from the frame via the cutout to the second electronic component.

Abstract: A heat dissipation apparatus includes a heat sink (30) and a fan (50) mounted on the heat sink. The heat sink includes a plurality of radial fins (311, 331). An air channel (312, 332) is defined between every two adjacent fins. Each of the fins includes a main body (331, 331) and an airflow guiding flange (314, 334) extending upwardly and outwardly from a top side of the main body. The airflow guiding flange is twisted in a radial direction, such that an included angle between the airflow guiding flange and the main body is gradually increased from an outer side (318, 338) towards an inner side (317, 337) of the main body. The fan is used to generate airflow towards the heat sink. The airflow is guided into the air channels between the fins via the airflow guiding flanges.

Abstract: An electronic device includes a first electronic component, a second electronic component adjacent to the first electronic component, a heat sink arranged on the first electronic component to absorb heat therefrom, an axial fan mounted on the heat sink for generating an airflow to the heat sink, and a guiding member. The axial fan includes a frame and an impeller received in the frame. A cutout is defined in the frame facing the second electronic component. The guiding member is arranged between the axial fan and the second electronic component for guiding a part of the airflow escaping from the frame via the cutout to the second electronic component.

Abstract: A centrifugal fan includes a housing and an impeller rotatably received in the housing. The housing defines an air inlet in a top plate thereof and an air outlet in a sidewall thereof. The air inlet is perpendicular to the air outlet. The impeller includes a hub and a plurality of blades extending outwardly from a sidewall of the hub. Each of the blades includes an inner blade section connected with the sidewall of the hub and an outer blade section extending outwardly from the inner blade section. An upper portion of the inner blade section is curved upwardly and forwardly from a curved lower portion of the inner blade section towards an adjacent front blade. The curved lower portion has a curvature smaller than that of the upper portion.

Abstract: A heat dissipation apparatus includes a heat sink (30) and a fan (50) mounted on the heat sink. The heat sink includes a plurality of radial fins (311, 331). An air channel (312, 332) is defined between every two adjacent fins. Each of the fins includes a main body (331, 331) and an airflow guiding flange (314, 334) extending upwardly and outwardly from a top side of the main body. The airflow guiding flange is twisted in a radial direction, such that an included angle between the airflow guiding flange and the main body is gradually increased from an outer side (318, 338) towards an inner side (317, 337) of the main body. The fan is used to generate airflow towards the heat sink. The airflow is guided into the air channels between the fins via the airflow guiding flanges.

Abstract: A heat dissipation apparatus includes a heat sink (30) and a fan (50) mounted on the heat sink. The heat sink includes a plurality of radial fins (311, 331). An air channel (312, 332) is defined between every two adjacent fins. Each of the fins includes a main body (331, 331) and an airflow guiding flange (314, 334) angling outwardly from a top side of the main body. The airflow guiding flange tapers from an outer side (318, 338) towards an inner side (317, 337) of the main body. The fan is used to generates airflow towards the heat sink. The airflow is guided into the air channels between the fins via the airflow guiding flanges.

Abstract: A heat dissipation device includes a heat sink and a cooling fan. The heat sink includes a substrate and a plurality of fins. The cooling fan includes a fan housing defining an air inlet and an air outlet at two opposite sides thereof, and an impeller received in the fan housing and mounted to a supporting base provided at the air inlet. The air outlet is positioned adjacent to the heat sink. The impeller includes a hub, a plurality of main blades and auxiliary blades. The hub includes a top wall located at the air outlet and a sidewall extending from the top wall. The main blades extend radially and outwardly from the sidewall. The auxiliary blades located on the top wall extend from a center of the top wall towards an outer periphery of the top wall.

Abstract: A heat dissipation device includes an electric fan having a fan impeller with a hub and a heat sink. A plurality of main blades and subsidiary blades extend radially and outwardly from the hub and alternate with each other. The electric fan forms an air inlet and an air outlet. The main blades have connecting portions on the hub which are extended towards a center of the hub at the air outlet. The subsidiary blades have a smaller radial length than the main blades. The subsidiary blades each have a connecting edge on the hub which is extended toward the center of the hub adjacent to the air outlet. The fan impeller drives more air to the center of the air outlet, whereby more air can flow to a center of the heat sink.