Abstract: A perpendicular magnetic recording head and a method of manufacturing said perpendicular magnetic recording head are provided. The perpendicular magnetic recording head has a main pole, a coil, which applies a magnetic field to the main pole, and a return pole constituting a magnetic circuit together with the main pole. The main pole has a back pole around which the coil is wound and a front pole contacting the back pole. The back pole and the front pole are formed on the same plane.

Abstract: A method of manufacturing a micro flux gate sensor that has a good electrical connection and can be easily manufactured includes operations of forming a metal pattern, forming a first insulation layer to cover the metal pattern and forming viaholes to expose a certain portion of the metal pattern, applying an electrical signal through the metal pattern and plating the viaholes with a metal material to form a connection portion, forming a magnetic core on an upper portion of the first insulation layer, forming a second insulation layer to cover the magnetic core and forming an upper coil portion electrically connected to the connection portion to form the excitation coil and the magnetic field detecting coil, forming a third insulation layer to cover the upper coil portion, and removing a certain portion of the metal pattern to leave only the lower coil portion of the metal pattern.

Abstract: A two-axis geomagnetic sensor is disclosed. The two-axis geomagnetic sensor includes a first geomagnetic sensor part including a first wafer and a first geomagnetic sensor on a surface of the first wafer; and a second geomagnetic sensor part including a second wafer and a second geomagnetic sensor on a surface of the second wafer. The first and second geomagnetic sensor parts are bonded to each other, in which the first and second geomagnetic sensors positioned in an orthogonal relation to each other. Accordingly, an occupancy area of the geomagnetic sensor can be reduced. Further, the geomagnetic sensor on each axe can have the same magnetic material properties, and alignment deviation cannot be generated.

Abstract: A perpendicular magnetic recording head and a method of manufacturing the same are provided. The perpendicular magnetic recording head includes a main pole, a return yoke, and a coil which generates a magnetic field such that the main pole may record information on a recording medium. The coil has a structure that surrounds the main pole in a solenoid shape.

Abstract: A method of manufacturing a micro flux gate sensor and a micro flux gate sensor manufactured according to the method are provided. The method includes operations of forming a lower coil portion of an excitation coil and a magnetic field detecting coil on a wafer, forming connection portions with a certain height at predetermined positions of the lower coil portion, forming a first insulation layer to cover the lower coil portion and the connection portions, forming a magnetic core on the first insulation layer, forming a second insulation layer to cover the magnetic core and forming an upper coil portion electrically connected to the connection portions to form the excitation coil and the magnetic field detecting coil, and forming a third insulation layer to cover the upper coil portion.

Abstract: A method of manufacturing a micro flux gate sensor that has a good electrical connection and can be easily manufactured. The method includes operations of forming a metal pattern including a lower coil portion of an excitation coil and a magnetic field detecting coil on a wafer, forming a first insulation layer to cover the meta pattern and forming viaholes to expose a certain portion of the metal pattern, applying an electrical signal through the metal pattern and plating the viaholes with a metal material to form a connection portion, forming a magnetic core on an upper portion of the first insulation layer, forming a second insulation layer to cover the magnetic core and forming an upper coil portion electrically connected to the connection portion to form the excitation coil and the magnetic field detecting coil, forming a third insulation layer to cover the upper coil portion, and removing a certain portion of the metal pattern to leave only the lower coil portion of the metal pattern.

Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects the Earth's magnetic field to obtain positional information is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns such that the upper and lower first driving patterns are electrically connected to each other, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers to be parallel to each other and patterned in a certain shape, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns electrically connected to the first driving patterns of the first base board to surround magnetic layers and formed with pickup patterns to surround the first and second driving patterns.

Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique which detects the Earth's magnetic field to obtain positional information, and a method of manufacturing the same is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns and first pickup patterns, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers thereon, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns and second pickup patterns electrically connected to the first driving patterns and the first pickup patterns of the first base board to surround magnetic layers. The magnetic layer, the driving patterns and the pickup patterns provided on the first base board are oriented to be perpendicular to those provided under the first base board.

Abstract: A bubble-jet type ink-jet printhead, and a manufacturing method thereof are provided, wherein, the printhead includes a substrate integrally having an ink supply manifold, an ink chamber, and an ink channel, a nozzle plate having a nozzle, a heater consisting of resistive heating elements, and an electrode for applying current to the heater. In particular, the ink chamber is formed in a substantially hemispherical shape on a surface of the substrate, a manifold is formed from its bottom side toward the ink chamber, and the ink channel linking the manifold and the ink chamber is formed at the bottom of the ink chamber. Thus, this simplifies the manufacturing process and facilitates high integration and high volume production. Furthermore, a doughnut-shaped bubble is formed to eject ink in the printhead, thereby preventing a back flow of ink as well as formation of satellite droplets that may degrade image resolution.

Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects earth magnetism to obtain positional information is disclosed. The sensor comprises a magnetic layer patterned in a certain shape; a first stacked board stacked on a lower surface of the magnetic layer and formed with a first driving pattern; a second stacked board stacked on an upper surface of the magnetic layer and formed with a second driving pattern, the first and second driving patterns being electrically connected to each other; a third lower stacked board stacked on a lower surface of the first stacked board and formed with a first pickup pattern; and a third upper stacked board stacked on an upper surface of the second stacked board and formed with a second pickup pattern, the third lower and upper stacked boards being electrically connected to each other.

Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects the Earth's magnetic field to obtain positional information is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns such that the upper and lower first driving patterns are electrically connected to each other, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers to be parallel to each other and patterned in a certain shape, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns electrically connected to the first driving patterns of the first base board to surround magnetic layers and formed with pickup patterns to surround the first and second driving patterns.

Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique which detects the Earth's magnetic field to obtain positional information, and a method of manufacturing the same is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns and first pickup patterns, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers thereon, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns and second pickup patterns electrically connected to the first driving patterns and the first pickup patterns of the first base board to surround magnetic layers. The magnetic layer, the driving patterns and the pickup patterns provided on the first base board are oriented to be perpendicular to those provided under the first base board.

Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects earth magnetism to obtain positional information is disclosed. The sensor comprises a magnetic layer patterned in a certain shape; a first stacked board stacked on a lower surface of the magnetic layer and formed with a first driving pattern; a second stacked board stacked on an upper surface of the magnetic layer and formed with a second driving pattern, the first and second driving patterns being electrically connected to each other; a third lower stacked board stacked on a lower surface of the first stacked board and formed with a first pickup pattern; and a third upper stacked board stacked on an upper surface of the second stacked board and formed with a second pickup pattern, the third lower and upper stacked boards being electrically connected to each other.

Abstract: A bubble-jet type ink-jet printhead, and a manufacturing method thereof are provided, wherein, the printhead includes a substrate integrally having an ink supply manifold, an ink chamber, and an ink channel, a nozzle plate having a nozzle, a heater consisting of resistive heating elements, and an electrode for applying current to the heater. In particular, the ink chamber is formed in a substantially hemispherical shape on a surface of the substrate, a manifold is formed from its bottom side toward the ink chamber, and the ink channel linking the manifold and the ink chamber is formed at the bottom of the ink chamber. Thus, this simplifies the manufacturing process and facilitates high integration and high volume production. Furthermore, a doughnut-shaped bubble is formed to eject ink in the printhead, thereby preventing a back flow of ink as well as formation of satellite droplets that may degrade image resolution.

Abstract: A bubble-jet type ink-jet printhead, and a manufacturing method thereof are provided, wherein, the printhead includes a substrate integrally having an ink supply manifold, an ink chamber, and an ink channel, a nozzle plate having a nozzle, a heater consisting of resistive heating elements, and an electrode for applying current to the heater. In particular, the ink chamber is formed in a substantially hemispherical shape on a surface of the substrate, a manifold is formed from its bottom side toward the ink chamber, and the ink channel linking the manifold and the ink chamber is formed at the bottom of the ink chamber. Thus, this simplifies the manufacturing process and facilitates high integration and high volume production. Furthermore, a doughnut-shaped bubble is formed to eject ink in the printhead, thereby preventing a back flow of ink as well as formation of satellite droplets that may degrade image resolution.

Abstract: A bubble-jet type ink-jet printhead, and a manufacturing method thereof are provided, wherein, the printhead includes a substrate integrally having an ink supply manifold, an ink chamber, and an ink channel, a nozzle plate having a nozzle, a heater consisting of resistive heating elements, and an electrode for applying current to the heater. In particular, the ink chamber is formed in a substantially hemispherical shape on a surface of the substrate, a manifold is formed from its bottom side toward the ink chamber, and the ink channel linking the manifold and the ink chamber is formed at the bottom of the ink chamber. Thus, this simplifies the manufacturing process and facilitates high integration and high volume production. Furthermore, a doughnut-shaped bubble is formed to eject ink in the printhead, thereby preventing a back flow of ink as well as formation of satellite droplets that may degrade image resolution.

Abstract: A thin-film liquid crystal display panel and a manufacturing method thereof in which an upper protection layer and a cell gap are formed by using a thin-film manufacturing technique usually used in the manufacture of semiconductors. The thickness of the cell gap is easily controlled, and the liquid crystal layer is uniformly formed. Therefore, a liquid crystal display panel with excellent liquid crystal driving capability is obtained.