Patents by Inventor Jang Jin Yoo
Jang Jin Yoo 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: 20240098275Abstract: A method for decoding an image based on an intra prediction, comprising: obtaining a first prediction pixel of a first region in a current block by using a neighboring pixel adjacent to the current block; obtaining a second prediction pixel of a second region in the current block by using the first prediction pixel of the first region; and decoding the current block based on the first and the second prediction pixels.Type: ApplicationFiled: November 15, 2023Publication date: March 21, 2024Inventors: Je Chang JEONG, Ki Baek KIM, Won Jin LEE, Hye Jin SHIN, Jong Sang YOO, Jang Hyeok YUN, Kyung Jun LEE, Jae Hun KIM, Sang Gu LEE
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Patent number: 9153185Abstract: A field sequential liquid crystal display device includes a circuit unit producing RGB reference voltages and scanning signal voltages using RGB data and control signals, a liquid crystal display panel changing alignment direction of liquid crystal molecules in accordance with the RGB reference voltages and the scanning signal voltages, and a backlight device emitting light to the liquid crystal display panel, wherein the circuit unit includes an interface receiving the RGB data and the control signals, a timing controller generating gate control signals and data control signals, at least two gamma generating units generating the RGB reference voltages, a switch selecting one of the RGB reference voltages, a data driver receiving the data control signal and the selected RGB reference voltage selected from the switch, and supplying an RGB image voltage to the liquid crystal display panel in accordance with the selected RGB reference voltage and the data control signal, and a gate driver receiving the gate contType: GrantFiled: June 19, 2003Date of Patent: October 6, 2015Assignee: LG Display Co., Ltd.Inventors: Jang-Jin Yoo, Hyeon-Ho Son
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Patent number: 8149368Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular portions of the common and pixel electrodes induce a second domain.Type: GrantFiled: April 3, 2009Date of Patent: April 3, 2012Assignee: LG Display Co., Ltd.Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
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Publication number: 20090231531Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular potions of the common and pixel electrodes induce a second domain.Type: ApplicationFiled: April 3, 2009Publication date: September 17, 2009Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
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Patent number: 7528919Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular potions of the common and pixel electrodes induce a second domain.Type: GrantFiled: April 7, 2006Date of Patent: May 5, 2009Assignee: LG Display Co., Ltd.Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
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Patent number: 7505024Abstract: A backlight unit in a display device having a Divided Display Area Method (DDAM) of a Field Sequential (FS) driving method applied thereto is provided. The backlight unit includes first to (n)th light guiding plates for field sequential drive, and a plurality of light sources arranged at at least one side of the first to (n)th light guiding plates at certain intervals.Type: GrantFiled: September 29, 2004Date of Patent: March 17, 2009Assignee: LG Display Co., Ltd.Inventors: Jang Jin Yoo, Jong Hoon Woo
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Patent number: 7440061Abstract: The present invention discloses an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides a plurality of dielectric protrusions.Type: GrantFiled: February 17, 2006Date of Patent: October 21, 2008Assignee: LG Display Co., Ltd.Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Ki-Hyuk Yoon
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Patent number: 7365817Abstract: The present invention relates to a multi-domain, specifically 4-domain, liquid crystal display and a method for manufacturing the same. In one aspect, the liquid crystal display includes a pair of opposed substrates and a liquid crystal injected and sealed between the substrates. A first region and a second region on the first substrate have different alignment directions due to a photosensitive alignment film formed on the first substrate. Each pixel on the second substrate exhibits four different liquid crystal alignment directions when an electric field is applied. This occurs because a fringe field is generated by a slit-patterned pixel electrode of the second substrate, and different alignment directions are formed in the first substrate.Type: GrantFiled: October 4, 2001Date of Patent: April 29, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Do Hee Kwon, Jang Jin Yoo
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Patent number: 7292220Abstract: A ferroelectric liquid crystal display and a fabricating method thereof that is capable of improving light efficiency by preventing light efficiency deterioration due to the low voltage holding ratio of a ferroelectric liquid crystal. The ferroelectric liquid crystal display supplies red, green and blue data signals to each of the liquid crystal cells and is in a stand-by state during a responding period of liquid crystal, and then sequentially generates red, green and blue lights corresponding to each of the red, green and blue data signals. With this configuration, deterioration in brightness due to the low voltage holding ratio of the ferroelectric liquid crystal can be prevented and the light efficiency can be increased.Type: GrantFiled: December 18, 2001Date of Patent: November 6, 2007Assignee: LG.Philips LCD. Co., Ltd.Inventors: Suk Won Choi, Su Seok Choi, Jang Jin Yoo, Moo Jong Lim
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Patent number: 7286193Abstract: A backlight unit for a display device and a liquid crystal display device using the backlight unit suppresses light leakage to a neighboring region with a display area that is divided and driven by a DDAM (Divided Display Area Method). The backlight unit in one aspect includes a main light guide plate defined by an n number of regions for a field sequential driving, auxiliary light guide plates arranged below edges of the main light guide plate, first and second reflection plates arranged below the main light guide plate and the auxiliary light guide plate, a plurality of light source parts arranged at a predetermined interval at both sides of the auxiliary light guide plate, and a housing configured to enclose a side of the main light guide plate, the auxiliary light guide plate and side and lower portion of the light source parts.Type: GrantFiled: December 22, 2003Date of Patent: October 23, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Jang Jin Yoo, Jong Hoon Woo
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Publication number: 20060181664Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular potions of the common and pixel electrodes induce a second domain.Type: ApplicationFiled: April 7, 2006Publication date: August 17, 2006Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
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Patent number: 7092060Abstract: A method for fabricating an array substrate for an in-plane switching liquid crystal display device includes forming a gate line and a data line on the substrate, the gate line and the data line crossing each other to define a pixel region, forming a thin film transistor that is electrically connected to the gate and data lines, and forming a common line parallel to the gate line. A plurality of common electrodes are formed to perpendicularly extend from the common line. A plurality of pixel electrodes are formed in an alternating pattern with the plurality of common electrodes, and an overcoat layer is formed over the plurality of common electrodes and the plurality of pixel electrodes, the overcoat layer having a plurality of holes.Type: GrantFiled: March 17, 2005Date of Patent: August 15, 2006Assignee: LG.Philips LCD Co., Ltd.Inventor: Jang-Jin Yoo
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Patent number: 7072017Abstract: A multi-domain liquid crystal display device includes: first and second substrates opposing each other; a plurality of gate lines and data lines on the first substrate lengthwise and crosswise, to define a pixel region; a common auxiliary electrode on a layer equal to the gate lines to surround the pixel region; a gate insulating film on the first substrate; a passivation film on the gate insulating film including the first substrate; a pixel electrode in the pixel region; a light-shielding layer on the second substrate; a color filter layer on the light-shielding layer; a common electrode on the color filter layer; a plurality of electric field distortion dielectric structures patterned in different forms within neighboring pixels; an alignment film on at least one of the first and second substrates; and a liquid crystal layer between the first substrate and the second substrate.Type: GrantFiled: June 29, 2000Date of Patent: July 4, 2006Assignee: LG. Philips LCD Co., Ltd.Inventors: Jang Jin Yoo, Doo Hyun Ko
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Publication number: 20060139550Abstract: The present invention discloses an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides a plurality of dielectric protrusions.Type: ApplicationFiled: February 17, 2006Publication date: June 29, 2006Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Ki-Hyuk Yoon
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Patent number: 7057696Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular potions of the common and pixel electrodes induce a second domain.Type: GrantFiled: July 17, 2003Date of Patent: June 6, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
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Patent number: 7030954Abstract: The present invention discloses an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides a plurality of dielectric protrusions.Type: GrantFiled: July 19, 2004Date of Patent: April 18, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Ki-Hyuk Yoon
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Patent number: 7009677Abstract: A liquid crystal display device having first and second substrates with an interposed liquid crystal layer that has a negative or a positive dielectric anisotropy. First and second electrodes are formed on opposing surfaces of the first and second substrates. A first orientation film comprised of a ferroelectric liquid crystal polymer is formed on the first electrode, and a second orientation film is formed on the second electrode. First and second polarizers are formed on exterior surfaces of the first and second substrates.Type: GrantFiled: February 7, 2005Date of Patent: March 7, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Jang-Jin Yoo, Suk-Won Choi, Su-Seok Choi
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Patent number: 6992742Abstract: A multi-domain liquid crystal display device includes a liquid crystal layer between first and second substrates. A plurality of gate bus lines and data bus lines are arranged in a first and second direction, respectively, on the first substrate, to define a pixel region. A common-auxiliary electrode surrounds the pixel region on a same layer whereon the gate bus line is formed. A gate insulator and a passivation layer are formed over the whole first substrate. A pixel electrode, having an electric field inducing window in the inner part thereof, is formed in the pixel region. A light shielding layer is formed on the second substrate, a color filter is formed on the light shielding layer, a common electrode is formed on the color filter layer. An alignment layer is formed on at least one substrate between the first and second substrates.Type: GrantFiled: January 31, 2002Date of Patent: January 31, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Kyeong Jin Kim, Yun Bok Lee, Jang Jin Yoo
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Publication number: 20050157239Abstract: A method for fabricating an array substrate for an in-plane switching liquid crystal display device includes forming a gate line and a data line on the substrate, the gate line and the data line crossing each other to define a pixel region, forming a thin film transistor that is electrically connected to the gate and data lines, and forming a common line parallel to the gate line. A plurality of common electrodes are formed to perpendicularly extend from the common line. A plurality of pixel electrodes are formed in an alternating pattern with the plurality of common electrodes, and an overcoat layer is formed over the plurality of common electrodes and the plurality of pixel electrodes, the overcoat layer having a plurality of holes.Type: ApplicationFiled: March 17, 2005Publication date: July 21, 2005Inventor: Jang-Jin Yoo
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Publication number: 20050134789Abstract: A liquid crystal display device having first and second substrates with an interposed liquid crystal layer that has a negative or a positive dielectric anisotropy. First and second electrodes are formed on opposing surfaces of the first and second substrates. A first orientation film comprised of a ferroelectric liquid crystal polymer is formed on the first electrode, and a second orientation film is formed on the second electrode. First and second polarizers are formed on exterior surfaces of the first and second substrates.Type: ApplicationFiled: February 7, 2005Publication date: June 23, 2005Inventors: Jang-Jin Yoo, Suk-Won Choi, Su-Seok Choi