摘要:
The surface of a solder ball and a conductive wire for a semiconductor package are coated with a predetermined colorant. Various colorants may be used according to the diameter and metal composition of the solder ball and the conductive wire. The colorant is formed by mixing organic compound and dye of a predetermined color. Examples of organic compounds excellent in physicochemical bonding with metal include benzotriazole, alkylimidazole and benzimidazole. The solder ball is fabricated by coating an organic compound of a predetermined color on the surface of a typical solder ball. The conductive wire is fabricated by coating an organic compound of a predetermined color on a general conductive wire between heat process and winding. Moreover, the solder ball is evaporated in a reflowing step after bumped via flux and the conductive wire is evaporated in a wire bonding step so that the solder ball and the conductive wire return to their unique colors.
摘要:
Provided is a method for manufacturing a nano-gap electrode device comprising the steps of: forming a first electrode on a substrate; forming a spacer on a sidewall of the first electrode; forming a second electrode on an exposed substrate at a side of the spacer; and forming a nano-gap between the first electrode and the second electrode by removing the spacer, whereby it is possible to control the nano-gap position, width, shape, and etc., reproducibly, and manufacture a plurality of nano-gap electrode devices at the same time.
摘要:
Provided is a method for manufacturing a nano-gap electrode device comprising the steps of: forming a first electrode on a substrate; forming a spacer on a sidewall of the first electrode; forming a second electrode on an exposed substrate at a side of the spacer; and forming a nano-gap between the first electrode and the second electrode by removing the spacer, whereby it is possible to control the nano-gap position, width, shape, and etc., reproducibly, and manufacture a plurality of nano-gap electrode devices at the same time.
摘要:
A lead frame for making a semiconductor package is disclosed. The leadframe's leads include a lead lock provided at a free end of each inner lead that is adapted to increase a bonding force of the inner lead to a resin encapsulate, thereby effectively preventing a separation of the inner lead from occurring in a singulation process involved in the fabrication of the semiconductor package. A semiconductor package fabricated using the lead frame and a fabrication method for the semiconductor package are also disclosed. The lead frame includes a paddle, a plurality of tie bars for supporting the corners of the paddle, a plurality of leads arranged at each of four sides or two facing sides of the paddle in such a fashion that they are spaced apart from an adjacent side of the paddle while extending perpendicularly to the associated side of the paddle, each of the leads having lead separation preventing means adapted to increase a bonding force of the lead to a resin encapsulate subsequently molded to encapsulate the lead frame for fabrication of the semiconductor package, and dam bars for supporting the leads and the tie bars. Additional package embodiments include exposed protrusions extending downward from the leads. The exposed protrusions are irradiated with a laser to remove set resin prior to a solder ball attachment step.
摘要:
The present invention relates to a polyarylate prepared by a method comprising a step of copolymerizing divalent phenol, divalent aromatic carboxylic acid halide and the allyl bisphenol derivative. The polyarylate according to the invention is a novel polyarylate in which various functional groups can be introduced to the main chain of the polymer as well as the terminal of a polymer, and the concentration thereof can be adjusted. These functional groups allow improvement in the adhesion force by chemically bonding with the substrate or protective layer when coated, thus the polyarylate is suitably used for a film or a coating composition.
摘要:
A tool magazine feeder for an automatic tool changer for feeding a tool magazine to a spindle comprises a carriage horizontally movable, under the state of supporting the tool magazine, between a remote position where the carriage is separated from the spindle and a proximate position where the carriage is adjacent to the spindle, a driving mechanism for reciprocating the carriage from the remote position to the proximate position and vice versa, and a guide mechanism positioned between the carriage and the driving mechanism. The guide mechanism is provided with one or more rollers and one or more rails for guiding the carriage to horizontally move between the remote position and the proximate position.
摘要:
Provided are a phase change memory device and a method of fabricating the same capable of maximizing a contact area of a phase change layer and a heating electrode. The memory device includes a heating electrode and a phase change layer. The heating electrode covers at least one side exposed by a pore and a portion of a surface of a lower electrode and includes a recess region. The phase change layer is stacked on the heating electrode filling up the recess region. The memory device may maximize a contact area of the phase change layer and the heating electrode, thereby greatly reducing power consumption.
摘要:
The present invention discloses a method for forming an interlayer insulation film in a semiconductor device, comprising the steps of: sequentially forming a porous low dielectric insulation film and a capping layer on the semiconductor substrate on which a few elements of the semiconductor device have been formed; and forming damascene patterns in the porous low dielectric insulation film by an etching process, and forming a protection film for closing pores exposed during the etching process at the same time.
摘要:
The present invention is provided to form a trench in a semiconductor device, wherein by performing an ion implanting process to an area of a semiconductor substrate in which the trench would be formed to cause lattice defects in the area before forming the trench, an etching speed of the area is increased in subsequent trench forming processes. As a result, it is possible to prevent micro trenches from being formed in edge portions of patterns and to suppress a micro loading effect to be generated depending upon pattern sizes.
摘要:
A kimchi refrigerator having sensing devices to sense whether doors of the kimchi refrigerator are opened. The kimchi refrigerator includes a main body forming an external appearance, and including storage chambers opened at one surface for storing food; doors to open and close the opened surfaces of the storage chambers; and sensing devices to sense whether the doors are opened. Since the sensing devices detect whether the doors are opened and the opening time of the doors, and lamps to illuminate the inner portions of the storage chambers and alarm devices to inform a user of the opening of the doors for a designated time or more are turned on and off based on the results detected by the sensing devices, the kimchi refrigerator compensates for the leaked cold air due to the opening of the doors.