Patents by Inventor Woong-Jae Chang
Woong-Jae Chang 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: 8135292Abstract: A fixing device includes a pressing member, a belt member which rotates in contact with the pressing member and forms a nip with the pressing member, a first roller member and a second roller member to guide a rotation of the belt member, and a heating member which is mounted in one of the first roller member or the second roller member to heat the belt member, the heating member including at least two heaters to respectively heat at least two areas on the belt member corresponding to at least two width dimensions substantially parallel to a rotational axis of the one of the first roller member and the second roller member, and a sensor member to control a temperature of the belt member. The heating member includes a first heater to heat a central portion of the one of the first roller member and the second roller member, and a second heater to heat opposite ends of the one of the first roller member and the second roller member.Type: GrantFiled: January 25, 2008Date of Patent: March 13, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Woong-jae Chang
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Patent number: 8072556Abstract: A liquid crystal display which includes a liquid crystal panel which displays an image, a middle frame in which the liquid crystal panel is positioned, an upper container which is disposed above the middle frame and includes the liquid crystal panel therein along with the middle frame, a lower container which has a bottom surface and a plurality of sidewalls that surround the bottom surface, is disposed below the middle frame and is coupled to the upper container, and at least one connection element which is disposed between the upper container and one of the sidewalls of the lower container and connects the lower container and the upper container.Type: GrantFiled: June 2, 2008Date of Patent: December 6, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Yoon-soo Kwon, Jung-tae Kang, Jin-ho Ha, Woong-jae Chang
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Patent number: 8066394Abstract: A backlight assembly includes a plurality of lamps, a receiving container and a conductive member. Each of the lamps includes a lamp body, a first electrode part disposed at a first end portion of the lamp body and a second electrode part disposed at a second end portion of the lamp body, the second end portion being opposite to the first end portion. The receiving container includes a bottom plate on which the lamps are disposed and a sidewall disposed at edge portions of the bottom plate to define a receiving space. The receiving container has a plurality of grounding portions formed on the bottom plate or the sidewalls. The conductive member electrically connects the second electrode part to one of the grounding portions.Type: GrantFiled: August 24, 2010Date of Patent: November 29, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Won-Ju Kim, Min-Ho Ok, Yoon-Soo Kwon, Jung-Tae Kang, Sang-Hoon Park, Jin-Ho Ha, Woong-Jae Chang
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Patent number: 7953348Abstract: A fusing device of an image forming apparatus which applies principles of leverage, and an image forming apparatus containing such a device. The fusing device includes a fusing unit having a heating roller and a pressure roller facing each other and which rotate together, a cover which opens and closes the fusing unit, and a pressure and release unit, one end of which is rotatably fixed to a rotating shaft, the pressure and release unit containing a member having a pressuring unit which pressures the pressure roller towards the heating roller when the cover opens and shuts, and a pressured part, which is farther from the rotating shaft than the pressuring part and which receives pressure from the cover.Type: GrantFiled: April 17, 2007Date of Patent: May 31, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Woong-jae Chang, Sea-chul Bae
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Patent number: 7920221Abstract: A backlight assembly which includes a first mold comprising a frame including a plurality of side portions defining an opening; and a light source disposed in the opening, wherein an external surface of the side portions includes a reverse-inclined surface extending downwardly and inwardly from an upper portion of the external surface and a width of the side portions is smaller at the upper portion and becomes larger downwardly.Type: GrantFiled: July 13, 2007Date of Patent: April 5, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Woong-jae Chang
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Publication number: 20110002113Abstract: A backlight assembly includes a plurality of lamps, a receiving container and a conductive member. Each of the lamps includes a lamp body, a first electrode part disposed at a first end portion of the lamp body and a second electrode part disposed at a second end portion of the lamp body, the second end portion being opposite to the first end portion. The receiving container includes a bottom plate on which the lamps are disposed and a sidewall disposed at edge portions of the bottom plate to define a receiving space. The receiving container has a plurality of grounding portions formed on the bottom plate or the sidewalls. The conductive member electrically connects the second electrode part to one of the grounding portions.Type: ApplicationFiled: August 24, 2010Publication date: January 6, 2011Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Won-Ju Kim, Min-Ho Ok, Yoon-Soo Kwon, Jung-Tae Kang, Sang-Hoon Park, Jin-Ho Ha, Woong-Jae Chang
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Patent number: 7806544Abstract: A backlight assembly includes a plurality of lamps, a receiving container and a conductive member. Each of the lamps includes a lamp body, a first electrode part disposed at a first end portion of the lamp body and a second electrode part disposed at a second end portion of the lamp body, the second end portion being opposite to the first end portion. The receiving container includes a bottom plate on which the lamps are disposed and a sidewall disposed at edge portions of the bottom plate to define a receiving space. The receiving container has a plurality of grounding portions formed on the bottom plate or the sidewalls. The conductive member electrically connects the second electrode part to one of the grounding portions.Type: GrantFiled: May 18, 2006Date of Patent: October 5, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Won-Ju Kim, Min-Ho Ok, Yoon-Soo Kwon, Jung-Tae Kang, Sang-Hoon Park, Jin-Ho Ha, Woong-Jae Chang
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Patent number: 7758233Abstract: A lamp assembly includes a lamp housing for housing one or more predefined tubular lamps and at least a first lamp socket for coupling to and removably retaining respective first electrodes of the one or more lamps and for further coupling an integral conduction path of the lamp housing to at least one of the first electrodes.Type: GrantFiled: August 9, 2007Date of Patent: July 20, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Woong-Jae Chang, Jung-Tae Kang, Joo-Yeon Won
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Patent number: 7718141Abstract: An automatic VOC concentration control apparatus is capable of adjusting the concentration of VOC in a catalytic device under a predetermined value. The automatic VOC concentration control apparatus includes a housing having an inlet port and an outlet port for introducing and discharging VOC vapor, respectively, one or more cooling tubes for cooling the VOC vapor introduced through the inlet port, and one or more porous members for holding droplets of VOC liquid thereon as the VOC vapor is condensed into liquid.Type: GrantFiled: September 13, 2005Date of Patent: May 18, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Woong-jae Chang
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Patent number: 7714952Abstract: A backlight assembly capable of reducing a frame size, and a liquid crystal display (LCD) apparatus having the backlight assembly is provided. The backlight assembly includes a bottom chassis having a receiving space, a lamp unit disposed at an edge portion of the receiving space, a light-guide plate disposed on the receiving space and an optical sheet. The lamp unit includes a light-emitting lamp a lamp cover covering a portion of the lamp and a sheet-fixing part that protrudes in an upward direction. The light-guide plate guides light from the lamp unit toward an upward direction. The optical sheet includes a fixing hole in which the sheet-fixing part is be inserted.Type: GrantFiled: June 20, 2006Date of Patent: May 11, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Woong-Jae Chang
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Patent number: 7637765Abstract: A lamp socket includes a socket body, a power supplying member and a socket cover. The socket body has a connecting hole formed in the socket body. The connecting hole is opened. The power supplying member is disposed in the connecting hole and an electrode supporting terminal having a supporting groove, so that supports an electrode portion of a lamp disposed in the power supplying member. The socket cover is partially and separably insertable in the connecting hole, to fix the electrode portion of the lamp. A backlight assembly includes a receiving container, a plurality of lamps and lamp sockets.Type: GrantFiled: October 31, 2007Date of Patent: December 29, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Woong-Jae Chang, Jung-Tae Kang, Jin-Ho Ha, Yoon-Soo Kwon
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Publication number: 20090128731Abstract: A liquid crystal display which includes a liquid crystal panel which displays an image, a middle frame in which the liquid crystal panel is positioned, an upper container which is disposed above the middle frame and includes the liquid crystal panel therein along with the middle frame, a lower container which has a bottom surface and a plurality of sidewalls that surround the bottom surface, is disposed below the middle frame and is coupled to the upper container, and at least one connection element which is disposed between the upper container and one of the sidewalls of the lower container and connects the lower container and the upper container.Type: ApplicationFiled: June 2, 2008Publication date: May 21, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yoon-soo Kwon, Jung-tae Kang, Jin-ho Ha, Woong-jae Chang
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Patent number: 7527406Abstract: A backlight assembly includes a receiving container, a first side mold, a printed circuit board and a plurality of lamps. The first side mold is on the side of the receiving container. The printed circuit board is combined with the first side mold, the printed circuit board including a plurality of conductive clips and a power supply line assembly for transmitting a lamp driving electric power. The lamps are combined with the conductive clips to generate light based on the lamp driving electric power. The power supply line assembly includes a first conductive line electrically connected to a subgroup of conductive clips and a second conductive line electrically connected to the other conductive clips. The first and second conductive lines are supplied with the lamp driving electric powers that have reverse phases to each other. Therefore, noise is decreased according to its waterfall curve to improve an image display quality.Type: GrantFiled: April 12, 2006Date of Patent: May 5, 2009Assignee: Samsung Electronics, Co., Ltd.Inventors: Yoon-Soo Kwon, Jung-Tae Kang, Sang-Hoon Park, Jin-Ho Ha, Woong-Jae Chang
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Patent number: 7493076Abstract: A paper-discharging guide unit for guiding a printing paper to be discharged outside a wet electrophotographic image forming apparatus and for absorbing volatile organic compound gases soaked in the printing paper comprises a guide frame forming a discharge passage for the printing paper, a plurality of guide ribs formed in pairs of slanted lines symmetrical with respect to a centerline of the discharge direction of the printing paper of the guide frame inside the guide frame and guiding the printing paper, and an air-absorbing portion disposed below the guide frame and absorbing air from a plurality of spaces between the guide frame and the plurality of guide ribs.Type: GrantFiled: October 11, 2005Date of Patent: February 17, 2009Assignee: Samsung Electronics Co., Ltd.Inventor: Woong-Jae Chang
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Publication number: 20080304848Abstract: A fixing device includes a pressing member, a belt member which rotates in contact with the pressing member and forms a nip with the pressing member, a first roller member and a second roller member to guide a rotation of the belt member, and a heating member which is mounted in one of the first roller member or the second roller member to heat the belt member, the heating member including at least two heaters to respectively heat at least two areas on the belt member corresponding to at least two width dimensions substantially parallel to a rotational axis of the one of the first roller member and the second roller member, and a sensor member to control a temperature of the belt member. The heating member includes a first heater to heat a central portion of the one of the first roller member and the second roller member, and a second heater to heat opposite ends of the one of the first roller member and the second roller member.Type: ApplicationFiled: January 25, 2008Publication date: December 11, 2008Applicant: Samsung Electronics Co., Ltd.Inventor: Woong-jae CHANG
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Publication number: 20080252808Abstract: A backlight assembly which includes a light source and a first mold receiving the light source, the first mold comprising a frame having a plurality of side walls defining an open interior portion. At least one side portion, an external surface of a side wall of the first mold has at least one reverse-inclined surface extending downwardly at an angle toward the interior side of the side wall.Type: ApplicationFiled: July 13, 2007Publication date: October 16, 2008Inventor: Woong-jae Chang
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Publication number: 20080124146Abstract: An image forming apparatus includes a fixing belt which is rotatably mounted, a support roller which is in contact with an inner surface of the fixing belt to support the fixing belt, a press member which pressurizes a portion of the fixing belt toward a paper, and a press roller which is in pressure contact with the support roller and the press member, the fixing belt being positioned between the press roller and the support roller and between the press roller and the press member. At least one of the support roller and the press roller has a concave shape such that a diameter of both ends of the at least one of the support roller and the press roller is larger than a diameter of a middle portion, and the press member is formed with a curved portion which is convexly formed at a middle portion of the at least one of the support roller and the press roller.Type: ApplicationFiled: June 12, 2007Publication date: May 29, 2008Applicant: Samsung Electronics Co., LtdInventors: Sea Chul BAE, Woong Jae Chang
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Patent number: 7377677Abstract: A backlight assembly with excellent light efficiency and a display device provided with the backlight assembly is provided where the backlight assembly includes a plurality of light sources longitudinally arranged in parallel to each other, and a fixing member receiving the plurality of light sources. When a display area, formed by light emitted from the plurality of light sources, is divided by the plurality of light sources into a plurality of display area sections, an average area of the display area sections between light sources adjacent to each other is less than or equal to an area of a display area section between an edge of the display area and the light source most adjacent thereto.Type: GrantFiled: October 28, 2005Date of Patent: May 27, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Jung-Tae Kang, Yoon-Soo Kwon, Woong-Jae Chang
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Publication number: 20080106900Abstract: A lamp socket includes a socket body, a power supplying member and a socket cover. The socket body has a connecting hole formed in the socket body. The connecting hole is opened. The power supplying member is disposed in the connecting hole and an electrode supporting terminal having a supporting groove, so that supports an electrode portion of a lamp disposed in the power supplying member. The socket cover is partially and separably insertable in the connecting hole, to fix the electrode portion of the lamp. A backlight assembly includes a receiving container, a plurality of lamps and lamp sockets.Type: ApplicationFiled: October 31, 2007Publication date: May 8, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Woong-Jae Chang, Jung-Tae Kang, Jin-Ho Ha, Yoon-Soo Kwon
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Publication number: 20080069589Abstract: A fusing device of an image forming apparatus which applies principles of leverage, and an image forming apparatus containing such a device. The fusing device includes a fusing unit having a heating roller and a pressure roller facing each other and which rotate together, a cover which opens and closes the fusing unit, and a pressure and release unit, one end of which is rotatably fixed to a rotating shaft, the pressure and release unit containing a member having a pressuring unit which pressures the pressure roller towards the heating roller when the cover opens and shuts, and a pressured part, which is farther from the rotating shaft than the pressuring part and which receives pressure from the cover.Type: ApplicationFiled: April 17, 2007Publication date: March 20, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Woong-jae CHANG, Sea-chul Bae