Abstract:
A lead frame unit, a semiconductor package having a lead frame unit, a stacked semiconductor package having a semiconductor package, and methods of manufacturing the same are provided. The lead frame unit in a stacked semiconductor package may include a die pad supporting a semiconductor chip, an inner lead electrically connected to the semiconductor chip, an outer lead extending from the inner lead, and a heat-resistant insulation member surrounding the connection portion. The outer lead may include a connection portion connected to the inner lead and a junction portion connected to the connection portion and a circuit board. An external signal may be applied to the junction portion. If the lead frame unit is used in the stacked semiconductor package, the outer lead and a dummy outer lead in the stacked semiconductor package may have substantially the same shape.
Abstract:
A reworkable passive element embedded printed circuit board (PCB) including a board member, first and second fillings, and a first passive element. The board member has first and second through holes which are spaced apart from each other. The first and second fillings are buried in the first and second through holes, respectively, and formed of a reflowable conductive material. The first passive element includes first and second electrodes. A first insertion groove is formed in a portion of a surface of the board member between the first and second through holes and portions of the first and second fillings. The first passive element is mounted on the first insertion groove. The first electrode includes a bottom surface and a side contacting the first filling and an exposed upper surface. The second electrode comprises a bottom surface and a side contacting the second filling and an exposed upper surface.
Abstract:
A mounting structure of a semiconductor device and a method of mounting the semiconductor device are provided. The mounting structure includes a circuit substrate having a terminal pad. A device substrate is located over the circuit substrate having a ball pad facing the terminal pad of the circuit substrate. A conductive ball is formed between the circuit substrate and the device substrate in order to connect the terminal pad of the circuit substrate to the ball pad of the device substrate. A first soldering flux including an epoxy-based resin connects the conductive ball to the ball pad of the device substrate. An underfill layer is formed between the circuit substrate and the device substrate in order to bury the conductive ball and the first soldering flux. Using the epoxy-based resin, the first soldering flux can substantially prevent crack from being generated in a solder joint between the conductive ball and the ball pad even when the device substrate is thermally deformed due to temperature variations.
Abstract:
A suction nozzle of a vacuum cleaner includes jet units for jetting air into positions where air streams collide with each other as air is drawn into a suction port of the nozzle from both side portions thereof, so as to prevent substantially the collision of air streams.
Abstract:
A pinch roller driving mechanism for a magnetic recording/reproducing apparatus, includes a main deck mounting a shaft of a capstan motor, a sub-deck that is loaded and unloaded with respect to the main deck, a pivot lever that is pivotably mounted to the main deck and supports a pinch roller that presses a magnetic tape into contact with the capstan shaft as the sub-deck is loaded, and an association unit that pivots the pivot lever so that the pinch roller contacts the shaft when the sub-deck is loaded, and returns the pivot lever to its initial position when the sub-deck is unloaded.
Abstract:
A suction brush of a vacuum cleaner includes: a body configured to communicate with a dust collection device and including at least one suction port; a cover configured to cover a top of the body; and at least one rolling pin configured to be rotatably coupled at a bottom of the body.
Abstract:
A liquid crystal display device comprising an LCD panel, a light guiding plate disposed in back of the LCD panel and a plurality of LEDs disposed on a plane in parallel with the LCD panel along a lateral side of the light guiding plate and arranged in two rows or more is provided. With this configuration, color mixing efficiency is enhanced while size of the display device is kept to a minimum.
Abstract:
A display device comprises: a display panel including a first insulating substrate and a second insulating substrate that is arranged so as to deviate from the first insulating substrate; and an intermediate frame, wherein the intermediate frame includes: side walls that are arranged so as to correspond to four side surface of the display panel; a mounting portion which protrudes from the side walls inward and on which the first insulating substrate is mounted; and a supporting protrusion that protrudes from the mounting portion to the second insulating substrate and is arranged below the second insulating substrate and on the side of the first insulating substrate.
Abstract:
A light source assembly includes a light source which emits light; a detector which detects the light and generates a light signal based on a property of the light; an operator operably connected to the detector and which receives the light signal and calculates a color coordinate of the light source based on the light signal; a comparator operably connected to the operator and which compares the color coordinate of the light source to a predetermined reference color coordinate; and a control unit operably connected to the comparator and which controls a pulse width modulation signal transmitted to the light source based on a result of the comparison of the comparator.