Patents by Inventor Hyung-taek Lim
Hyung-taek Lim 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: 7216959Abstract: An apparatus and method for driving an ink-jet printhead in which current is applied to a heater to heat ink to be supplied in an ink chamber to generate a bubble to eject ink from the ink chamber, the apparatus including a circuit that alternately applies current to the heater to alternate a direction of current flowing through the heater.Type: GrantFiled: July 27, 2004Date of Patent: May 15, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Ji-hyuk Lim, Young-jae Kim, Yong-soo Oh, Seog-soon Baek, You-seop Lee, Hyung-taek Lim, Chang-seung Lee
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Patent number: 7219243Abstract: A home network system with a standby power saving function and a method for saving standby power thereof, wherein various home appliances exchange information with a home server from time to time. At least one home appliance for a home network is provided in the home network system to exchange information with the home server over a network line. The home appliance includes a controller for analyzing data received over the network line and generating and outputting a home appliance control signal in accordance with the analyzed result, a load for operating/stopping the home appliance in response to the home appliance control signal from the controller, a low voltage transformer (LVT) for receiving an external voltage and supplying a drive voltage to the controller to operate the load and controller, and an LVT relay and a power supply unit for cooperating to selectively supply the drive voltage and a standby voltage to the controller according to whether the home appliance is in operation.Type: GrantFiled: June 26, 2002Date of Patent: May 15, 2007Assignee: LG Electronics Inc.Inventor: Hyung Taek Lim
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Patent number: 7207662Abstract: An ink-jet printhead includes a substrate having an ink chamber and a manifold, a nozzle plate formed on the substrate, first and second heaters and conductors, a material layer, and a plurality of ink channels. The nozzle plate includes a plurality of passivation layers formed of an insulating material, a heat dissipation layer formed on the plurality of passivation layers and made of a thermally conductive material, and a nozzle passing through the nozzle plate and in flow communication with the ink chamber. The first and second heaters and conductors are interposed between adjacent passivation layers of the nozzle plate. The material layer is interposed between the ink chamber and the manifold to form a bottom wall of the ink chamber and a top wall of the manifold. The plurality of ink channels is formed in the material layer to provide flow communication between the ink chamber and the manifold.Type: GrantFiled: June 21, 2004Date of Patent: April 24, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-joo Shin, Yong-soo Oh, Su-ho Shin, Min-soo Kim, Hyung-taek Lim, Chang-seung Lee, You-seop Lee, Keon Kuk
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Patent number: 7169539Abstract: A monolithic ink-jet printhead includes a substrate having an ink chamber, a manifold, and an ink channel in flow communication, a nozzle plate including a plurality of passivation layers stacked on the substrate and a heat dissipating layer stacked on the passivation layers, a nozzle for ejecting ink penetrating the nozzle plate, a heater provided between adjacent passivation layers above the ink chamber, and a conductor between adjacent passivation layers, the conductor being electrically connected to the heater, wherein the heat dissipating layer is made of a thermally conductive metal for dissipating heat from the heater, the lower part of the nozzle is formed by penetrating the plurality of passivation layers, and the upper part of the nozzle is formed by penetrating the heat dissipating layer in a tapered shape in which a cross-sectional area thereof decreases gradually toward an exit thereof.Type: GrantFiled: March 21, 2005Date of Patent: January 30, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Hyung-taek Lim, Jong-woo Shin, Hoon Song, Yong-soo Oh, Chang-seung Lee
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Publication number: 20060290743Abstract: A monolithic ink-jet printhead includes a substrate which has an ink chamber to be supplied with ink, a manifold for supplying ink to the ink chamber, and an ink channel for providing communication between the ink chamber and the manifold, a nozzle plate including a plurality of passivation layers sequentially stacked on the substrate, a metal layer formed on the passivation layers, and a nozzle, through which ink is ejected from the ink chamber, that penetrates the nozzle plate, a heater provided between adjacent passivation layers, the heater being located above the ink chamber for heating ink within the ink chamber, a conductor provided between adjacent passivation layers, the conductor being electrically connected to the heater for applying a current to the heater, and a hydrophobic coating layer formed exclusively on an outer surface of the metal layer.Type: ApplicationFiled: August 30, 2006Publication date: December 28, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hoon Song, Yong-soo Oh, Jong-woo Shin, Chang-seung Lee, Hyung-taek Lim
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Publication number: 20060238575Abstract: A monolithic ink-jet printhead includes a substrate having an ink chamber to be supplied with ink to be ejected on a front surface thereof, 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, a nozzle plate including a plurality of passivation layers stacked on the substrate and a heat dissipating layer overlying the passivation layers, the nozzle plate having a nozzle penetrating the nozzle plate, a heater formed between adjacent passivation layers and located above the ink chamber for heating the ink to be supplied within the ink chamber, and a conductor provided between adjacent passivation layers, the conductor being electrically connected to the heater for applying current across the heater, wherein the heat dissipating layer is made of a thermally conductive metal for dissipating heat from the heater.Type: ApplicationFiled: June 26, 2006Publication date: October 26, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Su-ho Shin, Yong-soo Oh, Keon Kuk, Hyung-taek Lim, Chang-seung Lee, Seung-ju Shin, Min-soo Kim, You-seop Lee
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Patent number: 7104632Abstract: A monolithic ink-jet printhead includes a substrate which has an ink chamber to be supplied with ink, a manifold for supplying ink to the ink chamber, and an ink channel for providing communication between the ink chamber and the manifold, a nozzle plate including a plurality of passivation layers sequentially stacked on the substrate, a metal layer formed on the passivation layers, and a nozzle, through which ink is ejected from the ink chamber, that penetrates the nozzle plate, a heater provided between adjacent passivation layers, the heater being located above the ink chamber for heating ink within the ink chamber, a conductor provided between adjacent passivation layers, the conductor being electrically connected to the heater for applying a current to the heater, and a hydrophobic coating layer formed exclusively on an outer surface of the metal layer.Type: GrantFiled: December 4, 2003Date of Patent: September 12, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Hoon Song, Yong-soo Oh, Jong-woo Shin, Chang-seung Lee, Hyung-taek Lim
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Publication number: 20060164577Abstract: A one-way transparent optical system and a flat panel display having the same are provided. The one-way transparent optical system includes a transparent substrate and an external light blocking layer. The external light block layer includes: first light reflecting layers, first and second light reflecting layers, transmitting windows, and first and second light absorbing layers. The first light reflecting layers are formed on and inclined toward the transparent substrate. The second light reflecting layers are spaced a predetermined distance from the first light reflecting layers. The first and second light reflecting layers are alternately arranged on the transparent substrate. The transmitting windows are formed in the upper and lower portions of the spaces between the first and second light reflecting layers. The first and second light absorbing layers respectively formed on the first and second light reflecting layers.Type: ApplicationFiled: December 8, 2005Publication date: July 27, 2006Inventors: Hyung-taek Lim, Hyung Choi, Byoung-ho Cheong
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Patent number: 7073891Abstract: A monolithic ink-jet printhead includes a substrate having an ink chamber to be supplied with ink to be ejected on a front surface thereof, 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, a nozzle plate including a plurality of passivation layers stacked on the substrate and a heat dissipating layer overlying the passivation layers, the nozzle plate having a nozzle penetrating the nozzle plate, a heater formed between adjacent passivation layers and located above the ink chamber for heating the ink to be supplied within the ink chamber, and a conductor provided between adjacent passivation layers, the conductor being electrically connected to the heater for applying current across the heater, wherein the heat dissipating layer is made of a thermally conductive metal for dissipating heat from the heater.Type: GrantFiled: October 14, 2003Date of Patent: July 11, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Su-ho Shin, Yong-soo Oh, Keon Kuk, Hyung-taek Lim, Chang-seung Lee, Seung-ju Shin, Min-soo Kim, You-seop Lee
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Publication number: 20060146102Abstract: In an ink-jet printhead and a method for manufacturing the same, the ink-jet printhead includes a substrate, an ink chamber to be filled with ink formed on a front surface of the substrate, a manifold for supplying ink to the ink chamber formed on a rear surface of the substrate, and an ink passage in flow communication with the ink chamber and the manifold formed parallel to the front surface of the substrate; a nozzle plate including a plurality of passivation layers formed of an insulating material on the front surface of the substrate, a heat dissipating layer formed of a metallic material, and a nozzle in flow communication with the ink chamber; and a heater and a conductor, the heater being positioned on the ink chamber and heating ink in the ink chamber, and the conductor for applying a current to the heater.Type: ApplicationFiled: March 6, 2006Publication date: July 6, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-soo Kim, Su-ho Shin, Yong-soo Oh, Hyung-taek Lim, Jong-woo Shin, Seog-soon Baek
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Patent number: 7036913Abstract: In an ink-jet printhead and a method for manufacturing the same, the ink-jet printhead includes a substrate, an ink chamber to be filled with ink formed on a front surface of the substrate, a manifold for supplying ink to the ink chamber formed on a rear surface of the substrate, and an ink passage in flow communication with the ink chamber and the manifold formed parallel to the front surface of the substrate; a nozzle plate including a plurality of passivation layers formed of an insulating material on the front surface of the substrate, a heat dissipating layer formed of a metallic material, and a nozzle in flow communication with the ink chamber; and a heater and a conductor, the heater being positioned on the ink chamber and heating ink in the ink chamber, and the conductor for applying a current to the heater.Type: GrantFiled: May 26, 2004Date of Patent: May 2, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Min-soo Kim, Su-ho Shin, Yong-soo Oh, Hyung-taek Lim, Jong-woo Shin, Seog-soon Baek
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Publication number: 20050162482Abstract: A monolithic ink-jet printhead includes a substrate having an ink chamber, a manifold, and an ink channel in flow communication, a nozzle plate including a plurality of passivation layers stacked on the substrate and a heat dissipating layer stacked on the passivation layers, a nozzle for ejecting ink penetrating the nozzle plate, a heater provided between adjacent passivation layers above the ink chamber, and a conductor between adjacent passivation layers, the conductor being electrically connected to the heater, wherein the heat dissipating layer is made of a thermally conductive metal for dissipating heat from the heater, the lower part of the nozzle is formed by penetrating the plurality of passivation layers, and the upper part of the nozzle is formed by penetrating the heat dissipating layer in a tapered shape in which a cross-sectional area thereof decreases gradually toward an exit thereof.Type: ApplicationFiled: March 21, 2005Publication date: July 28, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyung-taek Lim, Jong-woo Shin, Hoon Song, Yong-soo Oh, Chang-seung Lee
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Patent number: 6886919Abstract: A monolithic ink-jet printhead includes a substrate having an ink chamber, a manifold, and an ink channel in flow communication, a nozzle plate including a plurality of passivation layers stacked on the substrate and a heat dissipating layer stacked on the passivation layers, a nozzle for ejecting ink penetrating the nozzle plate, a heater provided between adjacent passivation layers above the ink chamber, and a conductor between adjacent passivation layers, the conductor being electrically connected to the heater, wherein the heat dissipating layer is made of a thermally conductive metal for dissipating heat from the heater, the lower part of the nozzle is formed by penetrating the plurality of passivation layers, and the upper part of the nozzle is formed by penetrating the heat dissipating layer in a tapered shape in which a cross-sectional area thereof decreases gradually toward an exit thereof.Type: GrantFiled: October 21, 2003Date of Patent: May 3, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Hyung-taek Lim, Jong-woo Shin, Hoon Song, Yong-soo Oh, Chang-seung Lee
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Publication number: 20050024440Abstract: An apparatus and method for driving an ink-jet printhead in which current is applied to a heater to heat ink to be supplied in an ink chamber to generate a bubble to eject ink from the ink chamber, the apparatus including a circuit that alternately applies current to the heater to alternate a direction of current flowing through the heater.Type: ApplicationFiled: July 27, 2004Publication date: February 3, 2005Inventors: Ji-hyuk Lim, Young-jae Kim, Yong-soo Oh, Seog-soon Baek, You-seop Lee, Hyung-taek Lim, Chang-seung Lee
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Publication number: 20050024441Abstract: An ink-jet printhead, and a method of manufacturing the same, includes a substrate, an ink chamber, a manifold, and an ink channel formed between the ink chamber and the manifold to provide flow communication between the ink chamber and the manifold, a substantially flat nozzle plate formed on the upper surface of the substrate, the nozzle plate including a plurality of passivation layers, a heat dissipation layer disposed on the plurality of passivation layers, the heat dissipation layer formed of a thermally conductive material and including a first thermally conductive layer formed on the plurality of passivation layers and a second thermally conductive layer formed on the first thermally conductive layer, and a nozzle extending through the nozzle plate in flow communication with the ink chamber, and a heater and a conductor, the heater heating ink filled in the ink chamber and the conductor applying current to the heater.Type: ApplicationFiled: July 27, 2004Publication date: February 3, 2005Inventors: Hoon Song, Yong-soo Oh, Jong-woo Shin, Hyung-taek Lim
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Publication number: 20050001883Abstract: An ink-jet printhead includes a substrate having an ink chamber and a manifold, a nozzle plate formed on the substrate, first and second heaters and conductors, a material layer, and a plurality of ink channels. The nozzle plate includes a plurality of passivation layers formed of an insulating material, a heat dissipation layer formed on the plurality of passivation layers and made of a thermally conductive material, and a nozzle passing through the nozzle plate and in flow communication with the ink chamber. The first and second heaters and conductors are interposed between adjacent passivation layers of the nozzle plate. The material layer is interposed between the ink chamber and the manifold to form a bottom wall of the ink chamber and a top wall of the manifold. The plurality of ink channels is formed in the material layer to provide flow communication between the ink chamber and the manifold.Type: ApplicationFiled: June 21, 2004Publication date: January 6, 2005Inventors: Seung-joo Shin, Yong-soo Oh, Su-ho Shin, Min-soo Kim, Hyung-taek Lim, Chang-seung Lee, You-seop Lee, Keon Kuk
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Publication number: 20040239729Abstract: In an ink-jet printhead and a method for manufacturing the same, the ink-jet printhead includes a substrate, an ink chamber to be filled with ink formed on a front surface of the substrate, a manifold for supplying ink to the ink chamber formed on a rear surface of the substrate, and an ink passage in flow communication with the ink chamber and the manifold formed parallel to the front surface of the substrate; a nozzle plate including a plurality of passivation layers formed of an insulating material on the front surface of the substrate, a heat dissipating layer formed of a metallic material, and a nozzle in flow communication with the ink chamber; and a heater and a conductor, the heater being positioned on the ink chamber and heating ink in the ink chamber, and the conductor for applying a current to the heater.Type: ApplicationFiled: May 26, 2004Publication date: December 2, 2004Inventors: Min-soo Kim, Su-ho Shin, Yong-soo Oh, Hyung-taek Lim, Jong-woo Shin, Seog-soon Baek
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Publication number: 20040109043Abstract: A monolithic ink-jet printhead includes a substrate which has an ink chamber to be supplied with ink, a manifold for supplying ink to the ink chamber, and an ink channel for providing communication between the ink chamber and the manifold, a nozzle plate including a plurality of passivation layers sequentially stacked on the substrate, a metal layer formed on the passivation layers, and a nozzle, through which ink is ejected from the ink chamber, that penetrates the nozzle plate, a heater provided between adjacent passivation layers, the heater being located above the ink chamber for heating ink within the ink chamber, a conductor provided between adjacent passivation layers, the conductor being electrically connected to the heater for applying a current to the heater, and a hydrophobic coating layer formed exclusively on an outer surface of the metal layer.Type: ApplicationFiled: December 4, 2003Publication date: June 10, 2004Inventors: Hoon Song, Yong-Soo Oh, Jong-Woo Shin, Chang-Seung Lee, Hyung-Taek Lim
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Publication number: 20040080583Abstract: A monolithic ink-jet printhead includes a substrate having an ink chamber, a manifold, and an ink channel in flow communication, a nozzle plate including a plurality of passivation layers stacked on the substrate and a heat dissipating layer stacked on the passivation layers, a nozzle for ejecting ink penetrating the nozzle plate, a heater provided between adjacent passivation layers above the ink chamber, and a conductor between adjacent passivation layers, the conductor being electrically connected to the heater, wherein the heat dissipating layer is made of a thermally conductive metal for dissipating heat from the heater, the lower part of the nozzle is formed by penetrating the plurality of passivation layers, and the upper part of the nozzle is formed by penetrating the heat dissipating layer in a tapered shape in which a cross-sectional area thereof decreases gradually toward an exit thereof.Type: ApplicationFiled: October 21, 2003Publication date: April 29, 2004Inventors: Hyung-Taek Lim, Jong-Woo Shin, Hoon Song, Yong-Soo Oh, Chang-Seung Lee
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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