Patents by Inventor Yun-Hi Lee
Yun-Hi 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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Patent number: 8430656Abstract: The present invention provides a 2 stage rotary compressor including a hermetic container (101), an electric motor (110) composed of an stator (111), a rotor (112) and a rotation axis (113), a low pressure compression assembly (120) including a low pressure cylinder (121), a high pressure compression (130) assembly including a high pressure cylinder (131), a middle plate (140) for separating the low pressure cylinder (121) from the high pressure cylinder (131), middle pressure communication holes (161a, 140a) formed in the low pressure cylinder (121) and the middle plate (140) to communicate with each other, and a middle pressure inflow groove (130a) formed in the high pressure cylinder (131) to communicate with the communication holes (161a, 140a) of the low pressure cylinder (121) and the middle plate (140).Type: GrantFiled: March 31, 2008Date of Patent: April 30, 2013Assignee: LG Electronics Inc.Inventors: Sang-Myung Byun, Seung-Jun Lee, Yun-Hi Lee, Yoon-Sung Choi
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Patent number: 8342825Abstract: The present invention provides a 2 stage rotary compressor (100) including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container, wherein a low pressure compression assembly (120), a middle plate (130) and a high pressure compression assembly (140) are successively stacked from any one of upper and lower portions, a first discharge port (124) for discharging middle pressure refrigerant compressed in the low pressure compression assembly (120) a second discharge port (162p) for discharging high pressure refrigerant compressed in the high pressure compression assembly (130) and a third discharge port (172p) positioned at any one of the upper and lower portions of the 2 stage compression assembly to discharge high pressure refrigerant compressed in the 2 stage compression assembly to the hermetic container (101), wherein an area of the third discharge port (172p) is larger than 0.5 times of an area of the first discharge port and smaller than 1.0 times thereof.Type: GrantFiled: March 31, 2008Date of Patent: January 1, 2013Assignee: LG Electronics Inc.Inventors: Sang-Myung Byun, Seung-Jun Lee, Yun-Hi Lee, Yoon-Sung Choi
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Patent number: 8272847Abstract: The present invention relates to a reciprocating compressor. The reciprocating compressor includes a latching unit by which a piston is reciprocated by two times a total eccentric amount obtained by adding an eccentric amount of an eccentric portion to an eccentric amount of an eccentric sleeve in a power mode, while the piston is reciprocated by two times the eccentric amount of the eccentric portion in a saving mode, accordingly the piston can have an upper dead point same in the power mode and the saving mode, thereby reducing a dead volume between the piston and a discharge valve and increasing a variable ratio of a cooling capacity of the compressor in the saving mode.Type: GrantFiled: February 4, 2008Date of Patent: September 25, 2012Assignee: LG Electronics Inc.Inventors: Yun-Hi Lee, Sang-Joon Eum, Seoung-Min Kang, Yoon-Sung Choi, Bum-Dong Sa
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Publication number: 20100322790Abstract: The present invention relates to a reciprocating compressor. The reciprocating compressor includes a latching unit by which a piston is reciprocated by two times a total eccentric amount obtained by adding an eccentric amount of an eccentric portion to an eccentric amount of an eccentric sleeve in a power mode, while the piston is reciprocated by two times the eccentric amount of the eccentric portion in a saving mode, accordingly the piston can have an upper dead point same in the power mode and the saving mode, thereby reducing a dead volume between the piston and a discharge valve and increasing a variable ratio of a cooling capacity of the compressor in the saving mode.Type: ApplicationFiled: February 4, 2008Publication date: December 23, 2010Inventors: Yun-Hi Lee, Sang-Joon Eum, Seoung-Min Kang, Yoon-Sung Choi, Bum-Dong Sa
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Publication number: 20100278674Abstract: The present invention provides a 2 stage rotary compressor (100) including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container, wherein a low pressure compression assembly (120), a middle plate (130) and a high pressure compression assembly (140) are successively stacked from any one of upper and lower portions, a first discharge port (124) for discharging middle pressure refrigerant compressed in the low pressure compression assembly (120) a second discharge port (162p) for discharging high pressure refrigerant compressed in the high pressure compression assembly (130) and a third discharge port (172p) positioned at any one of the upper and lower portions of the 2 stage compression assembly to discharge high pressure refrigerant compressed in the 2 stage compression assembly to the hermetic container (101), wherein an area of the third discharge port (172p) is larger than 0.5 times of an area of the first discharge port and smaller than 1.0 times thereof.Type: ApplicationFiled: March 31, 2008Publication date: November 4, 2010Inventors: Sang-Myung Byun, Seung-Jun Lee, Yun-hi Lee, Yoon-Sung Choi
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Publication number: 20100189584Abstract: The present invention provides a 2 stage rotary compressor including a hermetic container (101), an electric motor (110) provided in the hermetic container (101) and composed of an stator (111), a rotor (112) and a rotation axis (113), a low pressure compression assembly (120) including a low pressure cylinder (121), a low pressure eccentric portion (122) rotated along an inner diameter of the low pressure cylinder (121) due to rotation of the rotation axis (113), a low pressure roller (123) rotatably coupled to the outside of the low pressure eccentric portion (122), and a low pressure vane (124) for partitioning off an inner space of the low pressure cylinder (121), a high pressure compression (130) assembly including a high pressure cylinder (131), a high pressure eccentric portion (132) rotated along an inner diameter of the high pressure cylinder (130) due to rotation of the rotation axis (113) a high pressure roller (133) rotatably coupled to the outside of the high pressure eccentric portion (132), andType: ApplicationFiled: March 31, 2008Publication date: July 29, 2010Inventors: Sang-Myung Byun, Seung-Jun Lee, Yun-Hi Lee, Yoon-Sung Choi
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Publication number: 20090151371Abstract: The present invention relates to a compressor (5) and a refrigerator with the same, and more particularly, to a power saving type compressor which can prevent unnecessary consumption of a current for the compressor to have high energy efficiency, and a refrigerator with the same and a method for controlling the same, wherein the power saving type compressor includes a main winding and a sub-winding respectively having a main terminal (R) and a sub-terminal(s) main winding and a sub-winding being connected with a common terminal to each other, and a PTC switching unit between a PTC unit connected to the sub-terminal for increasing a starting torque in operation of the compressor and the main terminal, for making selective switching on/off of a power input to the PTC unit.Type: ApplicationFiled: September 6, 2006Publication date: June 18, 2009Applicant: LG Electronics Inc.Inventors: Sang Joon Eum, Yun Hi Lee, Yeon Woo Kim, Seoung Min Kang, Jea Young Choi, Jeong Ho Lee, Bum Dong Sa, Chang Gyu Kim, Jae Hun Lee
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Patent number: 6833558Abstract: A selective and parallel growth method of carbon nanotube for electronic-spintronic device applications which directly grows a carbon nanotube on a wanted position toward a horizontal direction comprises the steps of: forming an insulating film on a board; forming fine patterns of catalyst metal layer including a contact electrode pad on the insulating film, forming a growth barrier layer for preventing vertical growth on upper part of the catalyst metal layer; and directly growing the carbon nanotube between the catalyst patterns.Type: GrantFiled: August 22, 2001Date of Patent: December 21, 2004Assignee: Korea Institute of Science and TechnologyInventors: Yun Hi Lee, Byeong Kwon Ju, Yoon Taek Jang
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Patent number: 6808605Abstract: A fabrication method of metallic nanowires includes the steps of: forming a layer of autocatalytic metal with a thickness of 30 nm-1000 nm on the surface of a substrate; and forming nanowires on the front surface of the layer of autocatalytic metal, wherein the substrate is put into an evaporator and the layer of autocatalytic metal is grown by autocatalytic reaction for 10˜5000 seconds. A large amount of nanowires can be grown on a substrate without a lithography process.Type: GrantFiled: October 7, 2002Date of Patent: October 26, 2004Assignee: Korea Institute of Science and TechnologyInventors: Yun-Hi Lee, Byeong-Kwon Ju, Yoon-Taek Jang, Chang-Hoon Choi
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Publication number: 20030072885Abstract: A fabrication method of metallic nanowires includes the steps of: forming a layer of autocatalytic metal with a thickness of 30 nm-1000 nm on the surface of a substrate; and forming nanowires on the front surface of the layer of autocatalytic metal, wherein the substrate is put into an evaporator and the layer of autocatalytic metal is grown by autocatalytic reaction for 10˜5000 seconds. A large amount of nanowires can be grown on a substrate without a lithography process.Type: ApplicationFiled: October 7, 2002Publication date: April 17, 2003Applicant: Korea Institute of Science and TechnologyInventors: Yun-Hi Lee, Byeong-Kwon Ju, Yoon-Taek Jang, Chang-Hoon Choi
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Publication number: 20020025374Abstract: A selective and parallel growth method of carbon nanotube for electronic-spintronic device applications which directly grows a carbon nanotube on a wanted position toward a horizontal direction comprises the steps of: forming an insulating film on a board; forming fine patterns of catalyst metal layer including a contact electrode pad on the insulating film, forming a growth barrier layer for preventing vertical growth on upper part of the catalyst metal layer; and directly growing the carbon nanotube between the catalyst patterns.Type: ApplicationFiled: August 22, 2001Publication date: February 28, 2002Inventors: Yun Hi Lee, Byeong Kwon Ju, Yoon Taek Jang
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Patent number: 6121066Abstract: A field emission display and a method for fabricating the same are disclosed. The method includes the steps of: forming a silicon mold; growing a diamond on the silicon mold, to form a diamond tip; forming a conductive layer on the diamond tip; bonding a first substrate to the conductive layer; removing the silicon mold; forming a gate insulating layer and gate electrode on the diamond tip; and etching the gate electrode and gate insulating layer to expose an electron emission portion of the tip, and thereby form a gate hole. By doing so, the operation voltage is reduced, compared with the diode-type display, and high-responsibility field emission display can be realized by applying (-) or (+) voltage to the gate electrode.Type: GrantFiled: May 15, 1996Date of Patent: September 19, 2000Assignee: Korea Institute of Science and TechnologyInventors: Byeong Kwon Ju, Myung Hwan Oh, Yun Hi Lee
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Patent number: 5977703Abstract: A field emission display device and a fabrication method thereof, by which a vacuum sealing can be simple, and electric and optical characteristics between pixels can be improved by achieving a device package by means of a junction between substrates in vacuum without a spacer, which includes a semiconductor substrate having a groove having a predetermined depth; an n-well formed on the semiconductor substrate under the bottom of the groove; an emitter formed on the n-well; an insulation film formed on a portion of the semiconductor substrate, in which the groove is not formed; a transparent electrode bonded to the upper portion of the insulation film; a light emitting layer arranged on the upper portion of the emitter and formed within the transparent electrode; and a glass substrate formed on the transparent electrode.Type: GrantFiled: May 15, 1996Date of Patent: November 2, 1999Assignee: Korea Institute of Science and TechnologyInventors: Byeong Kwon Ju, Myung Hwan Oh, Yun Hi Lee
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Patent number: 5966588Abstract: An improved field emission display device fabrication method which adopts both a silicon wafer direct bonding method and a mold method so as to fabricate an improved field emission display device, which includes the steps of a first step which forms a tip array by a molding method; and a second step which bonds the tip array to a second semiconductor substrate.Type: GrantFiled: April 4, 1996Date of Patent: October 12, 1999Assignee: Korea Institute of Science and TechnologyInventors: Byeong Kwon Ju, Myung Hwan Oh, Yun Hi Lee, Nam Yang Lee
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Patent number: 5955835Abstract: An improved white-light emitting electroluminescent display device and a manufacturing method thereof capable of advantageously generating a light having a red, blue, and green wave lengths within a unique material, which includes a substrate; a lower electrode disposed on the substrate; a first dielectric layer disposed on the lower electrode; a ZnS:Pr,Mn light-emitting layer disposed on the first dielectric layer; a second dielectric layer; and an upper electrode disposed on the second dielectric layer. In addition, a fabrication method thereof includes the steps of forming a first dielectric layer on an upper electrode; forming a light-emitting layer on the first dielectric layer by depositing a ZnS:Pr,Mn luminescent material made of Pr of 1.4.about.0.5 mol % and Mn of 0.1.about.0.01 mol % on a ZnS host material; forming a second dielectric layer on the light-emitting layer; and forming a lower electrode on the second dielectric layer.Type: GrantFiled: December 12, 1996Date of Patent: September 21, 1999Assignee: Korea Institute of Science and TechnologyInventors: Myung Hwan Oh, Task Sang Hahn, Yun Hi Lee, Seong Jae Jeung, Young Dae Ju, Jin Ho Sunwoo
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Patent number: 5912532Abstract: An improved white-lite emitting electroluminescent display capable of emitting a light having a red, blue, and green wave length in a single material and having a buffer layer of Si.sub.x N.sub.y between a dielectric layer of BaTa.sub.2 O.sub.6 and a light-emitting layer, which includes a substrate; a lower dielectric layer of Bata.sub.2 O.sub.6 formed on a transparent electrode; a light-emitting layer of SrS:Pr,F formed on the lower dielectric layer; a buffer layer of Si.sub.x N.sub.y formed on the light-emitting layer; a upper dielectric layer of BaTa.sub.2 O.sub.6 formed on the buffer layer; and an upper electrode formed on the upper dielectric layer, and further includes the steps of a first step which forms a lower electrode on a substrate; a second step which forms a light-emitting layer of SrS:Pr.F on a lower dielectric layer; a third step which forms a buffer layer of Si.sub.x N.sub.y on the light-emitting layer; a fourth step which forms a upper dielectric layer of BaTa.sub.2 O.sub.Type: GrantFiled: December 12, 1996Date of Patent: June 15, 1999Assignee: Korea Institute of Science and TechnologyInventors: Myung Hwan Oh, Taek Sang Hahn, Yun Hi Lee, Tae Ho Yeom, Dong Ho Kim, Dong Ky Shin, Chun Woo Lee, Seong Jae Jeung
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Patent number: 5853795Abstract: A method for fabricating a luminant for a field emission display fabricated through PVD is disclosed. The method includes the steps of: forming a ZnO:Zn luminescent thin film on a glass substrate through PVD; and forming a conductive thin film on the ZnO:Zn luminescent thin film, to thereby change the luminescence threshold, brightness and luminescent color suitable for the operation characteristics of the emitter in a predetermined range, by controlling the thickness of the luminescent layer, temperature and ambient of heat treatment of the luminant.Type: GrantFiled: May 15, 1996Date of Patent: December 29, 1998Assignee: Korea Institute of Science and TechnologyInventors: Myung Hwan Oh, Yun Hi Lee, Byeong Kwon Ju, Man Ho Song
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Patent number: 5814528Abstract: A fabrication method for a test piece for observing non-contact regions in a pair of bonded semiconductor substrates includes thinning one substrate of a pair of bonded semiconductor substrates, grade-polishing the thinned semiconductor substrate and the bonded semiconductor substrates to have a predetermined graded angle relative their bonded surfaces, and dry-etching an area around the bonded surfaces of the grade-polished semiconductor substrates to reveal faults. With the thusly fabricated test piece, micro non-contact regions can be simply observed and crystal faults existing on the bonded surfaces as well as in the micro non-contact regions can be easily detected.Type: GrantFiled: October 10, 1996Date of Patent: September 29, 1998Assignee: Korea Intstitute of Science and TechnologyInventors: Byeong Kwon Ju, Myung Hwan Oh, Yun Hi Lee, Nam Yang Lee, Keun Ha Koh, Dong Ky Shin