Patents by Inventor Jun-hyub Park
Jun-hyub Park has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9194889Abstract: Provided is a probe card including a plurality of unit plates including pad areas and contact probe areas, a plurality of electrode pads formed in the pad areas, a plurality of contact probes formed in the contact probe areas, and a plurality of interconnecting layers electrically connecting the electrode pads and the contact probes. The plurality of unit plates has different sizes and are arranged and laminated so as to expose all the pad areas of each unit plate.Type: GrantFiled: September 7, 2011Date of Patent: November 24, 2015Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Hak Joo Lee, Jung Yup Kim, Jun-Hyub Park
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Publication number: 20130162276Abstract: Provided is a probe card including a plurality of unit plates including pad areas and contact probe areas, a plurality of electrode pads formed in the pad areas, a plurality of contact probes formed in the contact probe areas, and a plurality of interconnecting layers electrically connecting the electrode pads and the contact probes. The plurality of unit plates has different sizes and are arranged and laminated so as to expose all the pad areas of each unit plate.Type: ApplicationFiled: September 7, 2011Publication date: June 27, 2013Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Hak Joo Lee, Jung Yup Kim, Jun-Hyub Park
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Patent number: 7487590Abstract: A monolithic ink-jet printhead includes a substrate having a lower ink chamber formed on an upper surface thereof, a manifold for supplying ink to the lower ink chamber formed on a bottom surface thereof, and an ink channel providing communication therebetween; a nozzle plate having a plurality of passivation layers and a metal layer sequentially stacked on the substrate, the nozzle plate having an upper ink chamber formed therein on a bottom surface of the metal layer, a nozzle in communication with the upper ink chamber formed on an upper surface of the metal layer, and a connection hole providing communication between the upper ink chamber and the lower ink chamber; a heater located between the upper ink chamber and the lower ink chamber for heating ink contained in the lower and upper ink chambers; and a conductor electrically connected to the heater to apply a current to the heater.Type: GrantFiled: February 28, 2006Date of Patent: February 10, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Hoon Song, Yong-soo Oh, Jun-hyub Park, Keon Kuk, Chang-seung Lee, Young-jae Kim, Ji-hyuk Lim
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Publication number: 20060146093Abstract: A monolithic ink-jet printhead includes a substrate having a lower ink chamber formed on an upper surface thereof, a manifold for supplying ink to the lower ink chamber formed on a bottom surface thereof, and an ink channel providing communication therebetween; a nozzle plate having a plurality of passivation layers and a metal layer sequentially stacked on the substrate, the nozzle plate having an upper ink chamber formed therein on a bottom surface of the metal layer, a nozzle in communication with the upper ink chamber formed on an upper surface of the metal layer, and a connection hole providing communication between the upper ink chamber and the lower ink chamber; a heater located between the upper ink chamber and the lower ink chamber for heating ink contained in the lower and upper ink chambers; and a conductor electrically connected to the heater to apply a current to the heater.Type: ApplicationFiled: February 28, 2006Publication date: July 6, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hoon Song, Yong-soo Oh, Jun-hyub Park, Keon Kuk, Chang-seung Lee, Young-jae Kim, Ji-hyuk Lim
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Patent number: 7018017Abstract: A monolithic ink-jet printhead includes a substrate having a lower ink chamber formed on an upper surface thereof, a manifold for supplying ink to the lower ink chamber formed on a bottom surface thereof, and an ink channel providing communication therebetween; a nozzle plate having a plurality of passivation layers and a metal layer sequentially stacked on the substrate, the nozzle plate having an upper ink chamber formed therein on a bottom surface of the metal layer, a nozzle in communication with the upper ink chamber formed on an upper surface of the metal layer, and a connection hole providing communication between the upper ink chamber and the lower ink chamber; a heater located between the upper ink chamber and the lower ink chamber for heating ink contained in the lower and upper ink chambers; and a conductor electrically connected to the heater to apply a current to the heater.Type: GrantFiled: November 21, 2003Date of Patent: March 28, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Hoon Song, Yong-soo Oh, Jun-hyub Park, Keon Kuk, Chang-seung Lee, Young-jae Kim, Ji-hyuk Lim
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Patent number: 6747390Abstract: A micromirror actuator is provided. The micromirror actuator includes a substrate, posts formed to a predetermined height on the substrate and spaced a predetermined distance apart, a torsion bar fixed to the posts, a mirror coupled to the torsion bar, and a groove including an inclined contact surface and formed in the substrate. Here, the inclined contact surface contacts the lower bottom surface of the mirror when the mirror is rotated. The micromirror actuator can be applied to a structure in which a plurality of micromirror actuators are arrayed side-by-side and is capable of precisely and stably maintaining the rotation angle of a mirror, particularly, stably maintaining the inclination angle of the mirror irrespective of an increase in the strength of a magnetic field.Type: GrantFiled: November 19, 2001Date of Patent: June 8, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Hae-seok Park, Jun-hyub Park
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Publication number: 20040100535Abstract: A monolithic ink-jet printhead includes a substrate having a lower ink chamber formed on an upper surface thereof, a manifold for supplying ink to the lower ink chamber formed on a bottom surface thereof, and an ink channel providing communication therebetween; a nozzle plate having a plurality of passivation layers and a metal layer sequentially stacked on the substrate, the nozzle plate having an upper ink chamber formed therein on a bottom surface of the metal layer, a nozzle in communication with the upper ink chamber formed on an upper surface of the metal layer, and a connection hole providing communication between the upper ink chamber and the lower ink chamber; a heater located between the upper ink chamber and the lower ink chamber for heating ink contained in the lower and upper ink chambers; and a conductor electrically connected to the heater to apply a current to the heater.Type: ApplicationFiled: November 21, 2003Publication date: May 27, 2004Inventors: Hoon Song, Yong-Soo Oh, Jun-Hyub Park, Keon Kuk, Chang-Seung Lee, Young-Jae Kim, Ji-Hyuk Lim
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Publication number: 20040092839Abstract: An apparatus for measuring local skin impedance includes a multi-channel electrode including a plurality of measurement sensors on an electrode surface having a predetermined area, a channel selector for selecting each of channels included in the multi-channel electrode in response to a channel control signal, a constant current source for applying a predetermined constant current to a region to be measured, a preprocessing unit for amplifying and filtering a potential value measured at each of the channels while the predetermined constant current is flowing through the region to be measured, an analog-to-digital converter for converting the potential value output from the preprocessing unit into a digital signal, and a control unit for generating the channel control signal, for processing the digital signal output from the analog-to-digital converter, and for controlling the entire apparatus.Type: ApplicationFiled: October 24, 2003Publication date: May 13, 2004Inventors: Sang-Hoon Shin, Jun-Hyub Park, Geun-Bae Lim, Woo-Young Jang, Ho-Seong Gi
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Publication number: 20040075722Abstract: An ink-jet printhead includes a substrate having an ink chamber on a front surface thereof, the ink chamber to be supplied with ink to be ejected, a manifold for supplying ink to the ink chamber on a rear surface thereof, and an ink channel in communication with the ink chamber and the manifold, an impurity filtering layer formed on the rear surface of the substrate between the manifold and the ink channel for filtering impurities in ink flowing into the ink channel from the manifold, a nozzle plate formed on the front surface of the substrate, a nozzle formed through the nozzle plate at a position corresponding to a central part of the ink chamber, a heater formed on the nozzle plate, the heater being formed around the nozzle, and an electrode electrically connected to the heater for applying current to the heater.Type: ApplicationFiled: October 14, 2003Publication date: April 22, 2004Inventors: Chang-Seung Lee, Keon Kuk, Seung-Ju Shin, Yong-Soo Oh, Jun-Hyub Park, Hyung-Taek Lim
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Patent number: 6663226Abstract: An ink-jet print head preventing thermal accumulation on a nozzle plate includes a substrate, a channel formed in the substrate to supply ink, a nozzle plate connected to the substrate and including a nozzle corresponding to the channel, a heat element formed in the nozzle plate to surround the nozzle, a thermal conduction layer formed on an upper side of the heat element formed between the thermal conduction layer and the heat element, and a thermal shunt spaced-apart from the heat element by a predetermined distance not to overlap the heat element in a direction parallel to the nozzle plate and connecting the thermal conduction layer to the substrate. Redundant heat generated from the heat element is not accumulated on a membrane of the nozzle plate but is rapidly absorbed into an inorganic thermal conduction layer formed in the membrane and is transferred to the bulk silicon substrate through a metallic thermal bridge, such as the thermal shunt.Type: GrantFiled: December 4, 2002Date of Patent: December 16, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-sik Min, Seo-hyun Cho, Sang-wook Lee, Jun-hyub Park, Yong-shik Park, Kyong-il Kim
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Publication number: 20030112294Abstract: An ink-jet print head preventing thermal accumulation on a nozzle plate includes a substrate, a channel formed in the substrate to supply ink, a nozzle plate connected to the substrate and including a nozzle corresponding to the channel, a heat element formed in the nozzle plate to surround the nozzle, a thermal conduction layer formed on an upper side of the heat element formed between the thermal conduction layer and the heat element, and a thermal shunt spaced-apart from the heat element by a predetermined distance not to overlap the heat element in a direction parallel to the nozzle plate and connecting the thermal conduction layer to the substrate. Redundant heat generated from the heat element is not accumulated on a membrane of the nozzle plate but is rapidly absorbed into an inorganic thermal conduction layer formed in the membrane and is transferred to the bulk silicon substrate through a metallic thermal bridge, such as the thermal shunt.Type: ApplicationFiled: December 4, 2002Publication date: June 19, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Jae-Sik Min, Seo-Hyun Cho, Sang-Wook Lee, Jun-Hyub Park, Yong-Shik Park, Kyong-Il Kim
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Patent number: 6561626Abstract: An ink-jet print head preventing thermal accumulation on a nozzle plate includes a substrate, a channel formed in the substrate to supply ink, a nozzle plate connected to the substrate and including a nozzle corresponding to the channel, a heat element formed in the nozzle plate to surround the nozzle, a thermal conduction layer formed on an upper side of the heat element formed between the thermal conduction layer and the heat element, and a thermal shunt spaced-apart from the heat element by a predetermined distance not to overlap the heat element in a direction parallel to the nozzle plate and connecting the thermal conduction layer to the substrate. Redundant heat generated from the heat element is not accumulated on a membrane of the nozzle plate but is rapidly absorbed into an inorganic thermal conduction layer formed in the membrane and is transferred to the bulk silicon substrate through a metallic thermal bridge, such as the thermal shunt.Type: GrantFiled: April 15, 2002Date of Patent: May 13, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-sik Min, Seo-hyun Cho, Sang-wook Lee, Jun-hyub Park, Yong-shik Park, Kyong-il Kim
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Publication number: 20020067104Abstract: A micromirror actuator is provided. The micromirror actuator includes a substrate, posts formed to a predetermined height on the substrate and spaced a predetermined distance apart, a torsion bar fixed to the posts, a mirror coupled to the torsion bar, and a groove including an inclined contact surface and formed in the substrate. Here, the inclined contact surface contacts the lower bottom surface of the mirror when the mirror is rotated. The micromirror actuator can be applied to a structure in which a plurality of micromirror actuators are arrayed side-by-side and is capable of precisely and stably maintaining the rotation angle of a mirror, particularly, stably maintaining the inclination angle of the mirror irrespective of an increase in the strength of a magnetic field.Type: ApplicationFiled: November 19, 2001Publication date: June 6, 2002Applicant: Samsung Electronics Co., Ltd.Inventors: Hae-seok Park, Jun-hyub Park