摘要:
The present disclosure involves a light-emitting device. The light-emitting device includes an n-doped gallium nitride (n-GaN) layer located over a substrate. A multiple quantum well (MQW) layer is located over the n-GaN layer. An electron-blocking layer is located over the MQW layer. A p-doped gallium nitride (p-GaN) layer is located over the electron-blocking layer. The light-emitting device includes a hole injection layer. In some embodiments, the hole injection layer includes a p-doped indium gallium nitride (p-InGaN) layer that is located in one of the three following locations: between the MQW layer and the electron-blocking layer; between the electron-blocking layer and the p-GaN layer; and inside the p-GaN layer.
摘要:
An embedded metal heat sink for a semiconductor device is described. The embedded metal heat sink for a semiconductor device comprises a metal thin layer, a metal heat sink and two bonding pads. The metal thin layer including a first surface and a second surface on opposite sides, wherein at least one semiconductor device is embedded in the first surface of the metal thin layer, and the semiconductor device has two electrodes with different conductivity types. The metal heat sink is deposited on the second surface of the metal thin layer. The bonding pads are deposed on the first surface of the metal thin layer around the semiconductor device and are respectively corresponding to the electrodes, wherein the electrodes are electrically and respectively connected to the corresponding bonding pads by at least two wires, and the bonding pads are electrically connected to an outer circuit.
摘要:
A method for manufacturing a semiconductor device is described. The method comprises: providing a mold; coating a glue on a surface of the mold; providing at least one semiconductor chip, wherein the semiconductor chip includes a first side and a second side on opposite sides, and the first side of the semiconductor chip is pressed into a portion of the glue to expose the second side of the semiconductor chip; forming an adhesive layer to cover the second side of the semiconductor chip and the exposed portion of the glue; forming a metal heat sink on the adhesive layer; removing the glue and the mold; disposing a circuit board on the exposed portion of the adhesive layer; providing wires to electrically connect the circuit board to the semiconductor chip; and forming an encapsulation layer to completely encapsulate the semiconductor chip, the wires and the exposed portion of the adhesive layer.
摘要:
A method for manufacturing a heat sink of a semiconductor device is described. In the method, an adhesive tape is provided, wherein the adhesive tape includes a first surface and a second surface on opposite sides, and the first surface of the adhesive tape adheres to a surface of a temporary substrate. At least one semiconductor device is provided, wherein the semiconductor device includes a first side and a second side opposite to the first side, and the first side of the one semiconductor device is pressed and set into a portion of the second surface of the adhesive tape, and the second side of the one semiconductor device is exposed. A thin metal layer is formed on the second side of the semiconductor device and the exposed portion of the second surface of the adhesive tape. A metal heat sink is formed on the thin metal layer. Then, the adhesive tape and the temporary substrate are removed.
摘要:
A method for manufacturing a heat dissipation bulk of a semiconductor device including the following steps is described. An electrically conductive layer is formed to cover a surface of a temporary substrate. At least one semiconductor chip is connected to the electrically conductive layer by at least one metal bump, wherein the at least one metal bump is located between the at least one semiconductor chip and the electrically conductive layer. A metal substrate is formed on the electrically conductive layer, wherein the metal substrate fills up a gap between the at least one semiconductor chip and the electrically conductive layer. The temporary substrate is removed.
摘要:
A semiconductor device and a method for manufacturing the same are described. The semiconductor device comprises: a heat sink having at least one opening passing through the heat sink; at least one semiconductor chip disposed in the opening, wherein the semiconductor chip includes a first side and a second side on opposite sides; an electricity conducting thin film filling in a first depth portion of the opening, wherein the second side of the semiconductor chip is embedded in the electricity conducting thin film; a heat conducting thick film filling in a second depth portion of the opening, wherein the electricity conducting thin film is directly connected with the heat conducting thick film; at least one wire electrically connecting the semiconductor chip and an external circuit; and an encapsulant covering a portion of the heat sink, the semiconductor chip, the wire and an exposed portion of the electricity conducting thin film.
摘要:
A semiconductor device and a method for manufacturing the same are described. The semiconductor device comprises: a heat sink having at least one opening passing through the heat sink; at least one semiconductor chip disposed in the opening, wherein the semiconductor chip includes a first side and a second side on opposite sides; an electricity conducting thin film filling in a first depth portion of the opening, wherein the second side of the semiconductor chip is embedded in the electricity conducting thin film; a heat conducting thick film filling in a second depth portion of the opening, wherein the electricity conducting thin film is directly connected with the heat conducting thick film; at least one wire electrically connecting the semiconductor chip and an external circuit; and an encapsulant covering a portion of the heat sink, the semiconductor chip, the wire and an exposed portion of the electricity conducting thin film.
摘要:
The present invention discloses screw bolt and nut with lubricant oil contained ball bush bearing. There is a deep oil storage hole formed in the nut parallel to axial direction of the bolt for storing the lubricant oil. An oil nipple or an oil packing is provided at one end of the deep oil storage hole for preventing leakage of the lubricant oil. A threaded oil dripping hole intersecting the deep oil storage hole with an oil containing member therein is formed in the nut thereby causing the lubricant oil to drip gradually into the spiral grooves and lubricate the rolling balls thereof. The oil containing member can be made of felt, wool, cotton (cloth or thread) or the like. Furthermore, an oil adjusting screw is provided with the oil dripping hole for controlling the flow rate of lubricant oil into the spiral grooves.
摘要:
A light-emitting device structure and a method for manufacturing the same are described. The light-emitting device structure includes a substrate and an illuminant structure. The substrate has a top surface and a lower surface on opposite sides, and two inclined side surfaces on opposite sides. Two sides of each inclined side surface are respectively connected to the top surface and the lower surface. The illuminant structure is disposed on the top surface.
摘要:
An embedded metal heat sink for a semiconductor device is described. The embedded metal heat sink for a semiconductor device comprises a metal thin layer, a metal heat sink and two bonding pads. The metal thin layer including a first surface and a second surface on opposite sides, wherein at least one semiconductor device is embedded in the first surface of the metal thin layer, and the semiconductor device has two electrodes with different conductivity types. The metal heat sink is deposited on the second surface of the metal thin layer. The bonding pads are deposed on the first surface of the metal thin layer around the semiconductor device and are respectively corresponding to the electrodes, wherein the electrodes are electrically and respectively connected to the corresponding bonding pads by at least two wires, and the bonding pads are electrically connected to an outer circuit.