Patents by Inventor Chang-seung Lee
Chang-seung Lee 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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Publication number: 20070109357Abstract: A monolithic ink-jet printhead, and a method of manufacturing the same, includes a substrate having an ink chamber, an ink channel, and a manifold, a nozzle plate formed on the substrate, a nozzle, a heater, and a conductor. The ink chamber includes sidewalls formed to a predetermined depth from the front surface of the substrate for defining side surfaces of the ink chamber and a bottom wall formed parallel to the front surface of the substrate at the predetermined depth from the front surface of the substrate for defining a bottom surface of the ink chamber. The nozzle plate includes a plurality of passivation layers, a heat dissipating layer being stacked on the passivation layers, and the nozzle for ejecting ink out of the printhead. The heater is positioned above the ink chamber and heats ink in the ink chamber and the conductor delivers a current to the heater.Type: ApplicationFiled: December 29, 2006Publication date: May 17, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Su-ho Shin, Seog-soon Baek, Seung-joo Shin, Yong-soo Oh, Jong-woo Shin, Chang-seung Lee, Ki-deok Bae
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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: 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: 7178905Abstract: A monolithic ink-jet printhead, and a method of manufacturing the same, includes a substrate having an ink chamber, an ink channel, and a manifold, a nozzle plate formed on the substrate, a nozzle, a heater, and a conductor. The ink chamber includes sidewalls formed to a predetermined depth from the front surface of the substrate for defining side surfaces of the ink chamber and a bottom wall formed parallel to the front surface of the substrate at the predetermined depth from the front surface of the substrate for defining a bottom surface of the ink chamber. The nozzle plate includes a plurality of passivation layers, a heat dissipating layer being stacked on the passivation layers, and the nozzle for ejecting ink out of the printhead. The heater is positioned above the ink chamber and heats ink in the ink chamber and the conductor delivers a current to the heater.Type: GrantFiled: June 7, 2004Date of Patent: February 20, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Su-ho Shin, Seog-soon Baek, Seung-joo Shin, Yong-soo Oh, Jong-woo Shin, Chang-seung Lee, Ki-deok Bae
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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: 20060172541Abstract: A method of fabricating a micro-needle array is provided. The method of fabricating a micro-needle array having a substrate having a first surface and a second surface spaced in a predetermined interval apart from the first surface, includes patterning on the first surface, thereby forming a shape of micro-needle bodies. Further, micro-passageways are formed that penetrate the first surface of the substrate from the second surface by a porous silicon process, and integrates the micro-passageways, thereby forming the bodies and channels of micro-needles.Type: ApplicationFiled: January 9, 2006Publication date: August 3, 2006Inventor: Chang-seung Lee
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Publication number: 20060166393Abstract: A method of manufacturing a MEMS structure including forming a porous layer having a predetermined thickness on the top surface of a substrate over an area where a cavity is to be formed; forming the cavity by etching the substrate below the porous layer; forming a membrane layer on the top surface to seal the cavity; and forming a structure on the upper side of the membrane layer. After forming a cantilever structure on the membrane layer and etching the membrane layer, a cantilever structure is produced in a floating state over the cavity. Also, at least one inlet hole and outlet hole can be formed in the porous layer and the membrane, thereby providing a sealed fluidic channel.Type: ApplicationFiled: December 13, 2005Publication date: July 27, 2006Inventors: Byeoung-ju Ha, Chang-seung Lee
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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: 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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Publication number: 20060134533Abstract: A method of fabricating a one-way transparent optical system by which external light is effectively intercepted and internal light passes nearly without loss is provided. The method includes: forming a silver halide on a transparent substrate; aligning a mask in which a predetermined pattern is formed, on the transparent substrate and exposing the silver halide using the mask; developing and fixing the exposed silver halide and forming a plurality of light-absorbing materials on the transparent substrate; and forming protrusion structures having a shape of a convex lens shape for refracting incident light toward a corresponding light-absorbing material of the light-absorbing materials, on the transparent substrate on which the light-absorbing materials are formed.Type: ApplicationFiled: December 7, 2005Publication date: June 22, 2006Inventors: O-gweon Seo, Kae-dong Back, Chang-seung Lee, Kyu-sik Kim, Duck-su Kim, Byoung-ho Cheong
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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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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: 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: 20040246310Abstract: A monolithic ink-jet printhead, and a method of manufacturing the same, includes a substrate having an ink chamber, an ink channel, and a manifold, a nozzle plate formed on the substrate, a nozzle, a heater, and a conductor. The ink chamber includes sidewalls formed to a predetermined depth from the front surface of the substrate for defining side surfaces of the ink chamber and a bottom wall formed parallel to the front surface of the substrate at the predetermined depth from the front surface of the substrate for defining a bottom surface of the ink chamber. The nozzle plate includes a plurality of passivation layers, a heat dissipating layer being stacked on the passivation layers, and the nozzle for ejecting ink out of the printhead. The heater is positioned above the ink chamber and heats ink in the ink chamber and the conductor delivers a current to the heater.Type: ApplicationFiled: June 7, 2004Publication date: December 9, 2004Inventors: Su-ho Shin, Seog-soon Baek, Seung-joo Shin, Yong-soo Oh, Jong-woo Shin, Chang-seung Lee, Ki-deok Bae
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Publication number: 20040130597Abstract: A monolithic ink-jet printhead, and a method for manufacturing the same, wherein the monolithic ink-jet printhead includes a manifold for supplying ink, an ink chamber having a hemispheric shape, and an ink channel formed monolithically on a substrate; a silicon oxide layer, in which a nozzle for ejecting ink is centrally formed in the ink chamber, is deposited on the substrate; a heater having a ring shape is formed on the silicon oxide layer to surround the nozzle; a MOS integrated circuit is mounted on the substrate to drive the heater and includes a MOSFET and electrodes connected to the heater. The silicon oxide layer, the heater, and the MOS integrated circuit are formed monolithically on the substrate. Additionally, a DLC coating layer having a high hydrophobic property and high durability is formed on an external surface of the printhead.Type: ApplicationFiled: December 22, 2003Publication date: July 8, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyeon-Cheol Kim, Yong-Soo Oh, Keon Kuk, Kwang-Joon Yoon, Jae-Sik Min, Sang-Hyun Lee, Chang-Seung Lee, Seog Soon Baek, Sang-Wook Lee, Jong-Cheol Shin