Abstract: A solder terminal and a fabrication method thereof are provided. According to one embodiment of the present invention, a solder terminal structure includes an adhesion metal layer formed on an electrode pad of a semiconductor device, a thermal diffusion barrier, a solder bonding layer, and a solder bump formed on upper portion of the solder bonding layer. With the thermal diffusion layer, the characteristic deterioration caused by the probe mark generated on the electrode pad can be prevented during a semiconductor reliability test, and at the same time, material movement between the layers of the electrode pad, the solder bonding layer and the adhesion metal layer can be reduced. Also, by having the thermal diffusion barrier act as a solder dam (a layer to confine the melted solder area to prevent the solder from being wetted), an additional deposition or etching process can be omitted.

Abstract: This invention relates to a microstrip array antenna, especially a broad-band dual-polarized microstrip array antenna having parallel feeding structure whose consist of two parts power supplying layers each of which generates its own polarization respectively. And the broad-band dual-polarized microstrip array antenna according to the present invention arranges transmission paths for two separate linear polarization on a different layer each other in order to minimize an interference effect and a proximity feeding method and an aperture coupled method are used in order to get two separate polarization.

Abstract: A solder terminal and a fabrication method thereof are provided. According to one embodiment of the present invention, a solder terminal structure includes an adhesion metal layer formed on an electrode pad of a semiconductor device, a thermal diffusion barrier, a solder bonding layer, and a solder bump formed on upper portion of the solder bonding layer. With the thermal diffusion layer, the characteristic deterioration caused by the probe mark generated on the electrode pad can be prevented during a semiconductor reliability test, and at the same time, material movement between the layers of the electrode pad, the solder bonding layer and the adhesion metal layer can be reduced. Also, by having the thermal diffusion barrier act as a solder dam (a layer to confine the melted solder area to prevent the solder from being wetted), an additional deposition or etching process can be omitted.

Abstract: An inner shield for a cathode ray tube includes a screen opening and an electron gun opening through which electron beams pass, and a main body including a pair of long sections and a pair of short sections interconnected to form the screen opening and the electron gun opening. A cathode ray tube includes the inner shield. Each of the short sections includes a cutaway section having a pair of first cutaway sections formed starting from the electron gun opening and extending at a predetermined angle for a predetermined distance toward the screen opening, and a second cutaway section formed starting from where the first cutaway sections end and extending inwardly toward the screen opening, the second cutaway section being formed to extend past imaginary lines formed from where the first cutaway sections end to a furthermost inward point of the second cutaway section, that is, the point of the second cutaway section closest to the screen opening.

Abstract: A fabrication method of wafer level packages capable of improving reliability by maximizing a contact area of metal wiring and a conductive ball and of simplifying fabrication processes by reducing the number of sputtering. The disclosed method comprises the steps of: providing a substrate having a plurality of chip pads on the upper part thereof; forming a first insulating layer including a first opening exposing the chip pad and a second opening forming a ball land on the substrate; forming metal wiring connected to the chip pad in a single unit through the first opening and covering the second opening to have a ball land on the first insulating layer; forming a second insulating layer including a third opening which covers the metal wiring, however, exposes the ball land; and adhering a conductive ball to be in contact with the third opening on the ball land.

Abstract: A cathode ray tube includes a panel having a front screen portion on which a phosphor screen is formed and a panel flange formed on an edge of the front screen portion; a funnel connected to the panel flange; a deflection yoke disposed around the funnel; a neck connected to the funnel, an electron gun disposed in the neck; a color selection apparatus for selecting electron beams emitted from the electron gun and allowing the selected electron beams to land on corresponding phosphors, the color selection apparatus including a frame having a pair of supporting members disposed at a predetermined distance from each other in parallel and a pair of elastic members fixed on both ends of the supporting members to correspond to the lateral sides of the mask; and a shield apparatus for shielding geomagnetism, the shield apparatus being mounted on a circumference of the frame of the color selection apparatus and extended toward the neck.

Abstract: Cathode-ray tubes with a shadow mask effective in minimizing the moiré effect are disclosed. The shadow mask has a plurality of apertures allowing electron beams to pass through, where a vertical pitch Py between each of the neighboring apertures along a minor axis of the shadow mask and a scanning pitch Ps between each of the scan lines of the electron beams satisfy the following relations hip: ((2n+1)/4)−0.1≦Ps/Py≦((2n+1)/4)+0.1 where n is an integer not less than three.

Abstract: A tension mask cathode ray tube has a vacuum tube and an inner shield mounted within the vacuum tube to shield the vacuum tube from geomagnetism. A value Br/Hc of the inner shield where Br indicates a residual magnetic flux density and Hc indicates a coercive force is established to be 1.0-2.0 times more than a value Br/Hc of the mask frame. In this structure, the route of electron beams is established to be more precise. Consequently, the purity characteristic and the convergence characteristic are improved while forming a precise raster. In this way, the display screen quality can be enhanced.

Abstract: Disclosed is a method of operating searchers, and setting a search information list and searching channels for the same. In a communication system, a method of searching channels, comprises the steps of generating a queue of priorities for each search mode, allocating to searchers search items having higher priorities based on the queue, and searching the search items by the allocated searchers.

Abstract: Disclosed is a method of compensating a frequency error and an apparatus for the same in the communication system suitable to the frequency error compensation. The method includes the steps of despreading the signal, estimating a frequency error value by differentiating the despread signal, generating a tone based on the frequency error value, and compensating for a frequency error of the despread signal based on the tone.

Abstract: An inter-frequency handoff execution method in a mobile communication system according to the present invention includes the steps of: transmitting from a base station a data frame in which a data transmission section and a frequency search section exist to an arbitrary mobile terminal; executing data transmission in the data transmission section; searching a frequency of other base station in the frequency search section; and determining whether or not handoff is executed in accordance with the searched result.

Abstract: A fabrication method of wafer level packages capable of improving reliability by maximizing a contact area of metal wiring and a conductive ball and of simplifying fabrication processes by reducing the number of sputtering. The disclosed method comprises the steps of: providing a substrate having a plurality of chip pads on the upper part thereof; forming a first insulating layer including a first opening exposing the chip pad and a second opening forming a ball land on the substrate; forming metal wiring connected to the chip pad in a single unit through the first opening and covering the second opening to have a ball land on the first insulating layer; forming a second insulating layer including a third opening which covers the metal wiring, however, exposes the ball land; and adhering a conductive ball to be in contact with the third opening on the ball land.

Abstract: A cathode ray tube includes a panel having a front screen portion on which a phosphor screen is formed and a panel flange formed on an edge of the front screen portion; a funnel connected to the panel flange; a deflection yoke disposed around the funnel; a neck connected to the funnel, an electron gun disposed in the neck; a color selection apparatus for selecting electron beams emitted from the electron gun and allowing the selected electron beams to land on corresponding phosphors, the color selection apparatus including a frame having a pair of supporting members disposed at a predetermined distance from each other in parallel and a pair of elastic members fixed on both ends of the supporting members to correspond to the lateral sides of the mask; and a shield apparatus for shielding geomagnetism, the shield apparatus being mounted on a circumference of the frame of the color selection apparatus and extended toward the neck.

Abstract: Cathode-ray tubes with a shadow mask effective in minimizing the moiré effect are disclosed.