Patents by Inventor Dong-seob Jang
Dong-seob Jang 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: 20140307433Abstract: A reflective diffusion lens may include a bottom surface concave toward a reflective surface, a longitudinal cross section of the bottom surface being formed in a parabolic shape or normal distribution shape such that light incident upon the bottom surface is incident upon the reflective surface, and the reflective surface concave toward the bottom surface. The reflective surface may include a concave surface having a longitudinal cross section formed in a parabolic shape or normal distribution shape to totally reflect the light transmitted from the bottom surface and incident upon the reflective surface. A lighting installation may include at least one light source to emit light, a reflective diffusion lens to collect light emitted from the light source, and a reflective plate positioned at a lower portion of the light source and adapted to adjust a direction or amount of light reaching the reflective plate.Type: ApplicationFiled: April 9, 2014Publication date: October 16, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Cheoul Young KIM, Keun Bum Lee, Seung Jae Lee, Sun Gil Kim, Chang Ju Kim, Geun Ho Lee, Dong Seob Jang
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Patent number: 8506123Abstract: Disclosed herein is an LED flash lens unit which prevents occurrence of yellow bands or yellow rings if LED light is concentrated through an LED flash lens improving manufacturing ability and mass production to have high performance and high efficiency.Type: GrantFiled: December 28, 2011Date of Patent: August 13, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Eui Lee, Seung Jae Lee, Dong Seob Jang, Heung Bom Kim, Jin Bae Kim
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Patent number: 8400581Abstract: Disclosed are a backlight unit capable of guiding light generated by LEDs to a light guide panel in order to eliminate brightness fault, as well as a light crystal display including the same. The backlight unit includes a light guide panel, an LED arranged at a lateral side of the light guide panel, and a light guide bar with at least one light diffusion pattern to scatter light generated by the LED and admit the scattered light into the light guide panel, thereby uniformly guiding the light generated by the LED to the light guide panel.Type: GrantFiled: February 4, 2010Date of Patent: March 19, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jae Heon Noh, Dong Seob Jang, Chang Hyun Kim
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Publication number: 20120182710Abstract: Disclosed herein is an LED flash lens unit which prevents occurrence of yellow bands or yellow rings if LED light is concentrated through an LED flash lens improving manufacturing ability and mass production to have high performance and high efficiency.Type: ApplicationFiled: December 28, 2011Publication date: July 19, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Eui Lee, Seung Jae Lee, Dong Seob Jang, Heung Bom Kim, Jin Bae Kim
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Patent number: 8162501Abstract: A display device including a plurality of light sources spaced apart from one another, a refracting plate disposed over the plurality of light sources, and first and second refracting surfaces formed at both surfaces of the refracting plate to allow light emitted from the light sources to be scattered plural times by passing through the refracting plate, the first and second refracting surfaces having different shapes from each other. With the display device, light emitted from the light sources can be uniformly diffused, whereby high brightness uniformity can be accomplished even at positions relatively close to the light source, resulting in a reduction in a thickness of the display device.Type: GrantFiled: February 10, 2009Date of Patent: April 24, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Jae Heon Noh, Jong Il Kim, Dong Seob Jang, Seong Ho Youn
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Patent number: 7896534Abstract: A back light unit and a manufacturing method thereof capable of improving efficiency of a manufacturing process are disclosed. The back light unit includes a light source, a light guiding plate which uniformly transmits a light beam generated by the light source, and a cover portion which forms an external appearance and fixes the light guiding plate, wherein a resin material is charged between the light guiding plate and the cover portion to couple the light guiding plate and the cover portion.Type: GrantFiled: June 10, 2008Date of Patent: March 1, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Jong Il Kim, Sun Gil Kim, Chang Hyun Kim
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Publication number: 20100271337Abstract: Disclosed herein are a touch panel and a touch display apparatus having the same. As disclosed, a touch panel may include a window unit, reflection units, and detection units. As disclosed, the reflection units may be on the window unit and may be configured to reflect scattered light when the window unit is touched. As disclosed, the detection units may be on the window unit and the detection units may be configured to detect the reflected scattered light.Type: ApplicationFiled: March 16, 2010Publication date: October 28, 2010Inventors: Jae Heon Noh, Jong II Kim, Dong Seob Jang, Jae Young Kim
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Publication number: 20100214507Abstract: Disclosed are a backlight unit capable of guiding light generated by LEDs to a light guide panel in order to eliminate brightness fault, as well as a light crystal display including the same. The backlight unit includes a light guide panel, an LED arranged at a lateral side of the light guide panel, and a light guide bar with at least one light diffusion pattern to scatter light generated by the LED and admit the scattered light into the light guide panel, thereby uniformly guiding the light generated by the LED to the light guide panel.Type: ApplicationFiled: February 4, 2010Publication date: August 26, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Heon Noh, Dong Seob Jang, Chang Hyun Kim
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Patent number: 7632003Abstract: A back light unit, in which bright lines produced from point light sources, light emitting diodes, in an oblique direction are removed, so that brightness can be uniformly maintained at a liquid crystal panel. The back light unit includes a prism light guide plate, light emitting diodes provided on one side of the prism light guide plate, and a bright-line dead section provided to the prism light guide plate so as to uniformly scatter light of each light condensing section generated by light emitted from the light emitting diodes, to prevent a spectrum of the light in a specific direction, and to prevent bright lines from being produced.Type: GrantFiled: September 7, 2007Date of Patent: December 15, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Sun Gil Kim, Hye Eun Park, Yong Joon Choi, Kyong Hak Seo
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Publication number: 20090268432Abstract: A display device including a plurality of light sources spaced apart from one another, a refracting plate disposed over the plurality of light sources, and first and second refracting surfaces formed at both surfaces of the refracting plate to allow light emitted from the light sources to be scattered plural times by passing through the refracting plate, the first and second refracting surfaces having different shapes from each other. With the display device, light emitted from the light sources can be uniformly diffused, whereby high brightness uniformity can be accomplished even at positions relatively close to the light source, resulting in a reduction in a thickness of the display device.Type: ApplicationFiled: February 10, 2009Publication date: October 29, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Heon Noh, Jong II Kim, Dong Seob Jang, Seong Ho Youn
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Patent number: 7512960Abstract: A hub-mounted optical disk to eliminate the need for a separate stack ring while decreasing the overall height, a method of fabricating the optical disk, and an injection molding die for manufacturing an optical disk substrate. The hub-mounted optical disk includes a substrate having a hollow and an indented portion engraved to a predetermined depth on the inside of a non-recording surface where no information is recorded; and a hub including a plate that has a fitting hole therein and is engaged into the hollow and the indented portion and a central ring that is inserted into the fitting hole. The method of fabricating the hub-mounted optical disk includes mounting the hub onto a magnetic chuck, applying an ultra-violet (UV) hardening resin on the indented portion of the substrate, operating the magnetic chuck so that the plate is in contact with the indented portion, and curing the UV hardening resin by irradiating it with UV light.Type: GrantFiled: August 23, 2004Date of Patent: March 31, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Myong-do Ro, Han-kook Choi, Dong-seob Jang, Du-seop Yoon
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Publication number: 20090067193Abstract: A back light unit and a manufacturing method thereof capable of improving efficiency of a manufacturing process are disclosed. The back light unit includes a light source, a light guiding plate which uniformly transmits a light beam generated by the light source, and a cover portion which forms an external appearance and fixes the light guiding plate, wherein a resin material is charged between the light guiding plate and the cover portion to couple the light guiding plate and the cover portion.Type: ApplicationFiled: June 10, 2008Publication date: March 12, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Jong II Kim, Sun Gil Kim, Chang Hyun Kim
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Patent number: 7389521Abstract: A disk cartridge including a lower case member in which a space portion to receive an optical disk is formed; an upper case member, joined to the lower case member, an opening portion to allow a reading/recording device to obtain access to the optical disk; a multi-shutter member, including shutters, installed at the lower case member to be able to slide, and to allow the opening portion to be exposed to the outside when the multiple-shutter member is moved in a direction of the insertion direction of the disk cartridge into a disk drive, such that the shutters overlap each other; and a locking member, installed at the lower case member, to fix the multiple-shutter member to the lower case member so that the multiple-shutter member cannot move arbitrarily.Type: GrantFiled: July 1, 2004Date of Patent: June 17, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Dae-kyong Park, Han-kook Choi, Dong-seob Jang
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Publication number: 20080112185Abstract: A back light unit, in which bright lines produced from point light sources, light emitting diodes, in an oblique direction are removed, so that brightness can be uniformly maintained at a liquid crystal panel. The back light unit includes a prism light guide plate, light emitting diodes provided on one side of the prism light guide plate, and a bright-line dead section provided to the prism light guide plate so as to uniformly scatter light of each light condensing section generated by light emitted from the light emitting diodes, to prevent a spectrum of the light in a specific direction, and to prevent bright lines from being produced.Type: ApplicationFiled: September 7, 2007Publication date: May 15, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Sun Gil Kim, Hye Eun Park, Yong Joon Choi, Kyong Hak Seo
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Patent number: 7327639Abstract: A hybrid head to record and reproduce high density data. The hybrid head to record and reproduce data includes an element to record and reproduce data which is formed at the back side of a slider. The element to record and reproduce data includes an energy source to supply energy required to heat a predetermined region of a recording medium to be data-recorded, a magnetic field applier to apply a magnetic field to the predetermined region of the recording medium heated by the energy supplied from the energy source, a data reproducer to reproduce data from the recording medium, a channel to allow the magnetic field supplier to transmit the energy supplied from the energy source to the predetermined region of the recording medium, a heat shield element to prevent heat from being transmitted from the channel to other elements around the channel, a write pole covering the heat shield element, and a magnetic field generator to generate a magnetic field to the write pole.Type: GrantFiled: March 31, 2003Date of Patent: February 5, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-seob Jang, Kun-ho Chu, Dae-sik Kim, Gyu-chan Jun, Young-min Cheong
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Patent number: 7263705Abstract: A disc cartridge and a disc drive apparatus. The disc cartridge includes an upper case and a lower case which form an internal space to accommodate a disc, and a pair of elastic protrusions formed at both sidewalls of the lower cases, which are elastically biased toward the internal space so that ends of the elastic protrusions support the disc. Surfaces are formed at the ends to slope toward the internal space so that the disc is located in an upper portion of the internal space and the pair of elastic protrusions supports the disc. The disc descends on the surfaces when the pair of elastic protrusions are opened and the disc is then located in a lower portion of the internal space.Type: GrantFiled: January 28, 2004Date of Patent: August 28, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Han-kook Choi, Dae-Kyong Park, Dong-seob Jang
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Publication number: 20070115660Abstract: A backlight unit usable in an LCD includes a point light source circuit board, a plurality of point light sources seated on the point light source circuit board, and a diffusion lens provided on each point light source and comprising a depressed point and a curved surface radially protruding from the depressed point.Type: ApplicationFiled: November 7, 2006Publication date: May 24, 2007Applicant: Samsung Electronics Co., LtdInventors: Seung-jae Lee, Dong-seob Jang, Seong-ho Youn, Chang-ju Kim, Sun-gil Kim, Hye-eun Park, Gi-su Kim
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Patent number: 7181754Abstract: A disk cartridge which includes a case having an upper wall, a lower wall, and a sidewall, which form an inner receiving space in which a disk is inserted, an opening formed in at least one of the upper wall and lower wall of the case to allow a recording/reproducing unit of a disk drive to access the disk therethrough, and an inlet hole formed at the sidewall of the case to allow the disk to be inserted into and withdrawn from the case therethrough.Type: GrantFiled: January 12, 2004Date of Patent: February 20, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Han-kook Choi, Dong-seob Jang, Dae-kyong Park, Kwang Kim, Yong-hoon Lee, Hae-sub Kweon
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Publication number: 20070035679Abstract: A backlight unit for a LCD panel includes a point light source circuit board, a plurality of point light sources mounted on the point light source circuit board, and an optical plate disposed on an upper part of the point light source and having a Fresnel lens formed on a planar surface the optical plate. Accordingly the back light unit has a good light emitting efficiency.Type: ApplicationFiled: August 8, 2006Publication date: February 15, 2007Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Seung-jae Lee, Dong-seob Jang, Seong-ho Youn, Chang-ju Kim, Hye-eun Park
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Publication number: 20070019394Abstract: A backlight unit includes a point light source circuit board, a plurality of point light sources mounted onto the point light source circuit board, and an optical plate having a first surface that faces toward the point light source and is formed with an accommodating part to accommodate the point light source.Type: ApplicationFiled: April 26, 2006Publication date: January 25, 2007Inventors: Hye-eun Park, Dong-seob Jang, Seong-ho Youn, Chang-ju Kim, Seung-jae Lee