Patents by Inventor Ku HYUN
Ku HYUN 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: 20080002071Abstract: A liquid crystal display device includes first and second substrates facing each other and including transmissive and reflective regions, a first electric field distorting unit disposed in the transmissive region on one of the first and second substrates and having a first bent shape, a second electric field distorting unit disposed in the reflective region on one of the first and second substrates and having a second bent shape, and a liquid crystal layer interposed between the first and second substrates, wherein the first bent shape has a first angle with respect to a first vertical direction of a first symmetrical axis of the first bent shape and the second bent shape has a second angle with respect to a second vertical direction of a second symmetrical axis of the second bent shape, and the first angle is different from the second angle.Type: ApplicationFiled: May 11, 2007Publication date: January 3, 2008Applicant: LG.PHILIPS LCD CO., LTD.Inventor: Ku-Hyun Park
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Publication number: 20070285594Abstract: A display substrate includes a signal line, a protecting layer and a repairing line. The protecting layer covers the signal line to protect the signal line and has a repairing groove formed therein. The repairing line is formed in the repairing groove and is electrically connected to the signal line to repair an electrical connection failure of the signal line. The repairing groove connects a first area and a second area of the signal line that are spaced apart from each other by a predetermined distance in a lengthwise direction of the signal line. The electrical connection failure occurs between the first and second areas. The repairing line is prevented from being damaged, and a display quality is improved.Type: ApplicationFiled: January 2, 2007Publication date: December 13, 2007Inventors: Ku-Hyun Kang, Dae-Keun Shin, Dae-Hyuk Song
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Patent number: 7248329Abstract: A liquid crystal display device includes first and second substrates facing each other and spaced apart by a uniform cell gap, an array element having a switching element on the first substrate and a first transparent electrode connected to the switching element, a first patterned spacer disposed on the array element having a first height less than the uniform cell gap, a second transparent electrode under the second substrate, a second patterned spacer disposed beneath the second transparent electrode, the second patterned spacer having a second height less than the uniform cell gap and connected to the first patterned spacer, a first alignment layer covering the first patterned spacer, a second alignment layer covering the second patterned spacer, and a liquid crystal material layer interposed between the first and second alignment layers, wherein the first and second spacers are connected to each other and a summation of the first and second heights of the first and second patterned spacers is equivalent tType: GrantFiled: November 21, 2005Date of Patent: July 24, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Ku-Hyun Park, Sang-Ho Choi
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Liquid crystal display panel implementing bistable liquid crystal and method of fabricating the same
Patent number: 7193667Abstract: A liquid crystal display panel implementing a bistable liquid crystal and fabricating the same is disclosed in the present invention. Specifically, a method of fabricating a liquid crystal display panel having first and second substrates, the method includes forming a first electrode on the first substrate, forming a second electrode on the second substrate, assembling the first and second substrates, forming a bistable twist nematic liquid crystal layer between the first and second substrates, wherein the bistable twist nematic liquid crystal layer having a monomer, aligning the bistable twist nematic liquid crystal layer by applying electric fields, and forming polymer networks by exposing the bistable twist nematic liquid crystal layer to light.Type: GrantFiled: January 4, 2005Date of Patent: March 20, 2007Assignee: LG.Philips LCD Co., Ltd.Inventor: Ku-Hyun Park -
Patent number: 7161568Abstract: A method of driving a liquid crystal display that is adaptive for improving a picture quality. In the method, a clock pulse is applied to a gate driver. First to third gate output enable signals are applied to the gate driver. A scanning pulse is applied to two gate lines during one period of the clock pulse.Type: GrantFiled: June 29, 2001Date of Patent: January 9, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Jong Jin Park, Hyeon Ho Son, Ku Hyun Park
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Patent number: 7079218Abstract: An optically compensated birefringence mode liquid crystal display device includes first and second substrates facing and spaced apart from each other, a liquid crystal material layer between the first and second substrates, the liquid crystal material layer having a splay state when a voltage is not applied and having a bend state when a transition voltage is applied, a first compensation film on an outer surface of the first substrate, a first polarizing plate on the first compensation film, a second compensation film on an outer surface of the second substrate, and a second polarizing plate on the second compensation film, wherein the liquid crystal material layer in the splay state has a first retardation value (R1) satisfying according to: 1.35<R1/?<1.75 the liquid crystal material layer in the bend state has a second retardation value (R2) according to: 0.5<R2/?<0.7 when a white voltage for a white image is applied, and a third retardation value (R3) according to: 0.1<R3/?<0.Type: GrantFiled: June 27, 2003Date of Patent: July 18, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Ku-Hyun Park, Sang-Ho Choi
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Publication number: 20060139537Abstract: A LCD device and method that improve contrast ratio, reduce grayscale inversion and light leakage without a retardation film. The LCD device includes: a first substrate and a second substrate facing the first substrate, the first and second substrates including a pixel region; a first electrode on an inner surface of the first substrate in the pixel region; a first alignment layer over the first electrode, the first alignment layer including a mesogenic material; a second electrode on an inner surface of the second substrate; a second alignment layer over the second electrode, the second alignment layer including a same material as the first alignment layer; a liquid crystal layer interposed between the first and second alignment layers; and first and second polarizers on outer surfaces of the first and second substrates, respectively, wherein the first and second alignment layers compensate retardation of the liquid crystal layer.Type: ApplicationFiled: June 27, 2005Publication date: June 29, 2006Inventors: Ku-Hyun Park, Su-Seok Choi
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Publication number: 20060072062Abstract: A liquid crystal display device includes first and second substrates facing each other and spaced apart by a uniform cell gap, an array element having a switching element on the first substrate and a first transparent electrode connected to the switching element, a first patterned spacer disposed on the array element having a first height less than the uniform cell gap, a second transparent electrode under the second substrate, a second patterned spacer disposed beneath the second transparent electrode, the second patterned spacer having a second height less than the uniform cell gap and connected to the first patterned spacer, a first alignment layer covering the first patterned spacer, a second alignment layer covering the second patterned spacer, and a liquid crystal material layer interposed between the first and second alignment layers, wherein the first and second spacers are connected to each other and a summation of the first and second heights of the first and second patterned spacers is equivalent tType: ApplicationFiled: November 21, 2005Publication date: April 6, 2006Inventors: Ku-Hyun Park, Sang-Ho Choi
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Patent number: 6989883Abstract: A liquid crystal display device includes first and second substrates facing each other and spaced apart by a uniform cell gap, an array element having a switching element on the first substrate and a first transparent electrode connected to the switching element, a first patterned spacer disposed on the array element having a first height less than the uniform cell gap, a second transparent electrode under the second substrate, a second patterned spacer disposed beneath the second transparent electrode, the second patterned spacer having a second height less than the uniform cell gap and connected to the first patterned spacer, a first alignment layer covering the first patterned spacer, a second alignment layer covering the second patterned spacer, and a liquid crystal material layer interposed between the first and second alignment layers, wherein the first and second spacers are connected to each other and a summation of the first and second heights of the first and second patterned spacers is equivalent tType: GrantFiled: December 20, 2002Date of Patent: January 24, 2006Assignee: LG. Philips LCD Co., Ltd.Inventors: Ku-Hyun Park, Sang-Ho Choi
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Publication number: 20050231453Abstract: A liquid crystal display device includes a temperature-sensing unit measuring at least one of a temperature of the liquid crystal display device and an ambient temperature of the liquid crystal display device, and outputting a frequency modulation signal corresponding to the measured temperature, a timing controller modulating a frequency of a clock signal based on the frequency modulation signal to generate a modulated clock signal, and treating a video data based on the modulated clock signal to generate a treated video data, and a display panel displaying an image based on the modulated clock signal and the treated video data, the display panel including a gate line, a data line crossing the gate line and a switching element connected to the gate line and the data line.Type: ApplicationFiled: April 18, 2005Publication date: October 20, 2005Applicant: LG.PHILIPS LCD CO. LTD.Inventors: Su-Hyun Park, Ku-Hyun Park, Young-Nam Lim, Sang-Ho Choi, Jong-Hoon Woo
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Patent number: 6940498Abstract: This invention relates to a liquid crystal display and a driving method thereof, and more particularly to a liquid crystal display and a driving method thereof for improving a picture quality. The driving method of the liquid crystal display according to the present invention includes supplying a first scanning signal to a first gate line for driving a liquid crystal cell; supplying a second scanning signal to a second gate line which is formed while having at least one gate line between the first gate line and the second gate line after the first gate line scanning signal has been supplied; and supplying the data synchronized with the first scanning signal and the second scanning signal to a plurality of data lines formed in the manner of crossing with the plurality of the gate lines.Type: GrantFiled: December 26, 2001Date of Patent: September 6, 2005Assignee: LG.Philips LCD Co., Ltd.Inventors: Jong Jin Park, Ku Hyun Park, Hyeon Ho Son
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Liquid crystal display panel implementing bistable liquid crystal and method of fabricating the same
Publication number: 20050140854Abstract: A liquid crystal display panel implementing a bistable liquid crystal and fabricating the same is disclosed in the present invention. Specifically, a method of fabricating a liquid crystal display panel having first and second substrates, the method includes forming a first electrode on the first substrate, forming a second electrode on the second substrate, assembling the first and second substrates, forming a bistable twist nematic liquid crystal layer between the first and second substrates, wherein the bistable twist nematic liquid crystal layer having a monomer, aligning the bistable twist nematic liquid crystal layer by applying electric fields, and forming polymer networks by exposing the bistable twist nematic liquid crystal layer to light.Type: ApplicationFiled: January 4, 2005Publication date: June 30, 2005Inventor: Ku-Hyun Park -
Patent number: 6888598Abstract: A liquid crystal display device includes an upper substrate and a lower substrate facing and spaced apart from each other; an upper orientation film on an inner surface of the upper substrate; a lower orientation film on an inner surface of the lower substrate; a liquid crystal layer interposed between the upper and lower orientation films; an upper polarizing plate on an outer surface of the upper substrate; a lower polarizing plate on an outer surface of the lower substrate; and at least one compensation film disposed between the upper substrate and the upper polarizing plate or between the lower substrate and the lower polarizing plate. In the typical IPS-LCD device with a wide viewing angle, since the metallic black matrix of the upper substrate affects the voltage between the common and pixel electrodes, the black matrix is made of resin and cannot be formed with a bent portion because of the limits of the processing technology.Type: GrantFiled: December 28, 2001Date of Patent: May 3, 2005Assignee: LG. Philips LCD Co., Ltd.Inventors: Wook-Sung Kim, Hyeon-Ho Son, Ku-Hyun Park
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Liquid crystal display panel implementing bistable liquid crystal and method of fabricating the same
Patent number: 6847418Abstract: A liquid crystal display panel implementing a bistable liquid crystal and fabricating the same is disclosed in the present invention. Specifically, a method of fabricating a liquid crystal display panel having first and second substrates, the method includes forming a first electrode on the first substrate, forming a second electrode on the second substrate, assembling the first and second substrates, forming a bistable twist nematic liquid crystal layer between the first and second substrates, wherein the bistable twist nematic liquid crystal layer having a monomer, aligning the bistable twist nematic liquid crystal layer by applying electric fields, and forming polymer networks by exposing the bistable twist nematic liquid crystal layer to light.Type: GrantFiled: January 30, 2001Date of Patent: January 25, 2005Assignee: LG. Philips LCD Co., Ltd.Inventor: Ku-Hyun Park -
Patent number: 6784963Abstract: A multi-domain liquid crystal display and method of fabricating the same is disclosed in the present invention. More specifically, a liquid crystal display includes first and second substrates, a liquid crystal layer between the first and second substrates, wherein the liquid crystal layer has a twist angle in a range of 1 to 89 degrees, and an optical plate between the liquid crystal layer and the second substrate, wherein the optical plate has an optical axis horizontal to the first and second substrates.Type: GrantFiled: February 14, 2001Date of Patent: August 31, 2004Assignee: LG.Philips LCD Co., Ltd.Inventor: Ku Hyun Park
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Publication number: 20040125323Abstract: An optically compensated birefringence mode liquid crystal display device includes first and second substrates facing and spaced apart from each other, a liquid crystal material layer between the first and second substrates, the liquid crystal material layer having a splay state when a voltage is not applied and having a bend state when a transition voltage is applied, a first compensation film on an outer surface of the first substrate, a first polarizing plate on the first compensation film, a second compensation film on an outer surface of the second substrate, and a second polarizing plate on the second compensation film, wherein the liquid crystal material layer in the splay state has a first retardation value (R1) satisfying according to:Type: ApplicationFiled: June 27, 2003Publication date: July 1, 2004Applicant: LG.Philips LCD Co., Ltd.Inventors: Ku-Hyun Park, Sang-Ho Choi
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Patent number: 6707520Abstract: A method of fabricating a liquid crystal display capable of arranging a liquid crystal injected within a liquid crystal display panel into a stable bend structure within a short time. The liquid crystal display includes a non-display area and a display area. In the method, alignment films positioned at the non-display area and at the display area undergo a rubbing treatment. The non-display area is exposed to light to adjust a pre-tilt angle of a liquid crystal included in each of the non-display area and the display area. Accordingly, the liquid crystal within the black matrix area is arranged at a large pre-tilt angle upon initialization of the liquid crystal display device, so that a bend structure can be obtained in a fast and stable manner.Type: GrantFiled: June 26, 2001Date of Patent: March 16, 2004Assignee: LG.Philips LCD Co., Ltd.Inventors: Ku Hyun Park, Hyeon Ho Son
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Patent number: 6693618Abstract: A liquid crystal display device in which a actual image and a black image are displayed alternately in a frame to prevent motion blur. A black image gate pulse and an actual image gate pulse are overlapped between two spaced scanning lines at an arbitrary moment of a frame to pre-charge a pixel voltage applied to pixels of the overlapped scanning line. The liquid crystal display device further includes a line memory that outputs a data signal to a data integrated circuit by dividing the data signal into at least two data signals to increase a data processing speed.Type: GrantFiled: December 28, 2001Date of Patent: February 17, 2004Assignee: LG. Philips LCD Co., LtdInventors: Hyeon-Ho Son, Ku-Hyun Park
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Publication number: 20030193640Abstract: A liquid crystal display device includes first and second substrates facing each other and spaced apart by a uniform cell gap, an array element having a switching element on the first substrate and a first transparent electrode connected to the switching element, a first patterned spacer disposed on the array element having a first height less than the uniform cell gap, a second transparent electrode under the second substrate, a second patterned spacer disposed beneath the second transparent electrode, the second patterned spacer having a second height less than the uniform cell gap and connected to the first patterned spacer, a first alignment layer covering the first patterned spacer, a second alignment layer covering the second patterned spacer, and a liquid crystal material layer interposed between the first and second alignment layers, wherein the first and second spacers are connected to each other and a summation of the first and second heights of the first and second patterned spacers is equivalent tType: ApplicationFiled: December 20, 2002Publication date: October 16, 2003Applicant: LG.Philips LCD Co., Ltd.Inventors: Ku-Hyun Park, Sang-Ho Choi
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Patent number: 6600531Abstract: A liquid crystal cell having spaced apart opposed and first and second substrates. First and second orientation films having first and second rubbing directions are on opposing surfaces of the first and the second substrates. First and second polarizers having first and second transmittance axis directions are on exterior surfaces of the first and the second substrates. A liquid crystal having a twisted angle “ø” is interposed in a gap “d” between the first and the second orientation films. The first transmittance axis direction is perpendicular to the second transmittance axis direction. The first and the second rubbing direction form an angle of ø. The first and second rubbing directions form angles of (90°−ø/2 with the first and second transmittance axis directions. The gap “d” is equal to the distance that produces optimum transmittance of the liquid crystal cell.Type: GrantFiled: November 17, 2000Date of Patent: July 29, 2003Assignee: LG. Philips LCD Co., Ltd.Inventors: Ku-Hyun Park, Hyun-Ho Shin