Patents by Inventor Hwa-Sung Woo
Hwa-Sung Woo 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: 20100134707Abstract: A liquid crystal display includes; first and second substrates facing each other, a liquid crystal layer interposed between the first and second substrates and including liquid crystal molecules, a first subpixel electrode disposed on the first substrate, the first subpixel electrode receiving a first data voltage, a second subpixel electrode disposed on the first substrate, the second subpixel electrode receiving a second data voltage; and a short protrusion disposed on the second substrate and simultaneously facing the first and second subpixel electrodes, wherein the liquid crystal layer is vertically aligned and has positive dielectric anisotropy.Type: ApplicationFiled: July 23, 2009Publication date: June 3, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Woon KIM, Hwa-Sung WOO, Joo-Nyung JANG, Mi-Jeong SONG, Hyang-Yul KIM, Cheol SHIN, Dong-Chul SHIN, Hee-Seop KIM, Jung-Hyeon KIM
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Publication number: 20100002161Abstract: A liquid crystal display (LCD) includes a first sub-pixel electrode to which a first data signal is applied, a second sub-pixel electrode which is spaced apart from the first pixel electrode and to which a second data signal is applied, and a floating electrode which is capacitance-coupled to the first sub-pixel electrode and the second sub-pixel electrodes. Also described is a method of controlling an LCD, the method including applying a first data signal to a first sub-pixel electrode, applying a second data signal to a second sub-pixel electrode, and capacitance-coupling a floating electrode to the first sub-pixel electrode and the second sub-pixel electrode.Type: ApplicationFiled: June 26, 2009Publication date: January 7, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung-Ju SHIN, Chong-Chul CHAI, Hwa-Sung WOO, Kwang-Chul JUNG
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Publication number: 20090310047Abstract: A liquid crystal display according to an embodiment of the present invention includes: first and second substrates opposed to each other; a liquid crystal layer including liquid crystal molecules interposed between the first and second substrates; a gate line formed on the first substrate and transmitting a gate signal; first and second data lines formed on the first substrate and transmitting first and second data voltages having different polarities; a first switching element connected to the gate line and the first data line; a second switching element connected to the gate line and the second data line; and first and second pixel electrodes that are connected to the first and second switching elements, respectively, and separated from each other, wherein the liquid crystal layer has positive dielectric anisotropy.Type: ApplicationFiled: January 8, 2009Publication date: December 17, 2009Inventors: Yong-Hwan Shin, Hwa-Sung Woo, Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung
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Publication number: 20090284700Abstract: A substrate for a display panel includes a transparent electrode layer and an alignment layer. The transparent electrode layer is disposed on an insulating substrate, the transparent electrode layer being electrically floated. The alignment layer is disposed on the insulating substrate on which the transparent electrode layer is formed, and the alignment layer having a pre-tilt angle tilted about 85° to about 90° form the insulating substrate.Type: ApplicationFiled: March 26, 2009Publication date: November 19, 2009Inventors: Hee-Seop Kim, Hwa-Sung Woo, Cheol Shin, Joo-Nyung Jang
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Publication number: 20090262106Abstract: A method of driving a display apparatus having first and second data lines includes applying a first data signal (to which a first gamma curve has been applied) and a first inverted data signal (having a phase opposite to a phase of the first data signal) to the first data line and the second data line, respectively, during a first frame interval. The method further includes applying a second data signal (to which a second gamma curve has been applied) and a second inverted data signal (having a phase opposite to a phase of the second data signal) to the first data line and the second data line, respectively, during a second frame interval temporally subsequent to the first frame interval.Type: ApplicationFiled: February 11, 2009Publication date: October 22, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Jian Gang Lu, Hwa-Sung Woo
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Publication number: 20090091587Abstract: A display apparatus includes a first display plate, a first electrode and a second electrode disposed on the first display plate, a second display plate, a third electrode disposed on the second display plate, and a liquid crystal layer disposed between the first display plate and the second display plate. The liquid crystal layer includes liquid crystal molecules oriented substantially perpendicular to the first display plate and the second display plate in a state where no voltage is applied to the first to third electrodes.Type: ApplicationFiled: June 23, 2008Publication date: April 9, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Woon Kim, Yong-Hwan Shin, Hwa-Sung Woo, Hee-Seop Kim
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Publication number: 20090073367Abstract: A liquid crystal display having enhanced transmittance in which the pixel electrode includes a micro-slit pattern and overlaps a control electrode on the insulation layer so that an effective voltage difference is formed between the pixel electrode and the control electrode to control the directional characteristics of the liquid crystal molecules.Type: ApplicationFiled: June 19, 2008Publication date: March 19, 2009Inventors: Hwa-Sung WOO, Hee-Seop KIM
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Publication number: 20090066891Abstract: A liquid crystal display (“LCD”) having controlled texture and reduced response time includes first and second insulation substrates which are separated from each other and face each other, a liquid crystal layer which is interposed between the first and second insulation substrates and has liquid crystal molecules, a pixel electrode which is disposed on the first insulation substrate and includes a plurality of first linear electrode patterns, a common electrode which is disposed on the first insulation substrate and includes a plurality of second linear electrode patterns separated from the first linear electrode patterns by a predetermined gap, and a texture control portion which is disposed in an area corresponding to the gap and formed on the first or second insulation substrate, wherein the first and second linear electrode patterns are arranged in an alternating fashion.Type: ApplicationFiled: May 16, 2008Publication date: March 12, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hwa-sung WOO, Yong-hwan Shin, Sung-woon Kim, Hee-seop Kim
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Publication number: 20090058784Abstract: A display device includes a first substrate, a first electrode comprising first electrode extensions formed on the first substrate, a second electrode comprising second electrode extensions formed on the first substrate and arranged alternately with the first electrode extensions, a second substrate facing the first substrate, liquid crystal molecules interposed between the first substrate and the second substrate, wherein electrode gaps formed between the first electrode extensions and the second electrode extensions comprise first electrode gaps and second electrode gaps, and the first electrode gaps are different from the second electrode gaps, and wherein the liquid crystal molecules are aligned vertically to the first and the second substrate, when the electric field is not formed between the first and the second substrate.Type: ApplicationFiled: January 8, 2008Publication date: March 5, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-hwan SHIN, Sung-woon KIM, Hwa-sung WOO, Hee-seop KIM
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Publication number: 20090040410Abstract: A device and method for improving the uniformity of color and luminance of images displayed in a transmissive region and a reflective region of a liquid crystal display are presented. The phase difference value of light for displaying images in the reflective and transmissive regions is the same with respect to one pixel. The phase difference value of the liquid crystal layer in the reflective region is half of the phase difference value of the liquid crystal layer in the transmissive region, in the range of from 25% to 75%, when considering the exemplary embodiments and path differences of the light. Also, a ?/4 plate having a slow axis forming a predetermined angle with the transmissive axis of the polarizer is formed inside the upper substrate and the lower substrate to display the same images in the reflective region and the transmissive region.Type: ApplicationFiled: August 6, 2008Publication date: February 12, 2009Inventors: Hwa-Sung Woo, Sung-Woon Kim, Hee-Seop Kim
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Publication number: 20090002618Abstract: A display device includes a first panel having a pixel electrode, a second panel having a common electrode facing the first panel, a liquid crystal layer interposed between the first panel and the second panel and having vertically-aligned liquid crystal molecules, a first alignment layer disposed on the pixel electrode, and a second alignment layer disposed on the common electrode. At least one of the first alignment layer and the second alignment layer divides the pixel electrode into a plurality of domains and is formed to have a plurality of pretilt directions which pretilt the vertically-aligned liquid crystal molecules in a domain of the plurality of domains. A sum of horizontal component directions of a pretilt direction of the plurality of pretilt directions is substantially equivalent to a sum of horizontal component directions of a fringe field at a peripheral boundary of the pixel electrode in the domain.Type: ApplicationFiled: June 11, 2008Publication date: January 1, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Jun-woo LEE, Hwa-sung WOO, Baek-kyun JEON, Kyoung-tae KIM, In-suk LEE
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Publication number: 20090002588Abstract: A display device includes: a first panel having a pixel region including a pixel electrode therein; a second panel having a common electrode facing the first panel; a liquid crystal layer having vertically aligned liquid crystal molecules interposed between the first and second panels; a first alignment layer disposed on the pixel electrode; and a second alignment layer disposed on the common electrode. At least one of the pixel electrode and the common electrode has a micro slit pattern. At least one of the first and second alignment layers divides the pixel region into domains, is formed to have pretilt directions corresponding to a given domain, and pretilts the vertically aligned liquid crystal molecules in the given domain. A direction of summed horizontal components of a fringe field at an edge of the pixel region is substantially equal to a direction of summed horizontal components of a pretilt direction of the at least one of the first and second alignment layer.Type: ApplicationFiled: June 27, 2008Publication date: January 1, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Jun-woo LEE, Hwa-sung WOO, Baek-kyun JEON, Ji-won SOHN, In-suk LEE, Kyoung-tae KIM
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Publication number: 20080278651Abstract: Provided are a liquid crystal display (LCD) and a method of fabricating the LCD. The LCD includes an insulating substrate a gate line disposed on the insulating substrate, a data line insulated from the gate line and crossing the gate line, a thin film transistor connected to the gate line and the data line, a passivation layer disposed on the thin film transistor, a pixel electrode connected to the thin film transistor and partitioned into a plurality of domains by a plurality of first slits, a control electrode disposed on the passivation layer and at least partially overlapping each first slit, and a plurality of domain forming members arranged parallel to the first slits in an alternating fashion and partitioning the pixel electrode into a plurality of domains.Type: ApplicationFiled: March 10, 2008Publication date: November 13, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-Woo LEE, Hee-Seop KIM, LuJian GANG, Seung-Hoon LEE, Hwa-Sung WOO
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Publication number: 20080186439Abstract: An LCD panel is provided for improving a contrast ratio by suppressing light leakage around gate lines of an assembly that is structured to support a liquid crystal alignment mode that enhanced side view visibility of the LCD image. The LCD panel includes a first base substrate, a plurality of gate lines and a plurality of data lines disposed on the first base substrate and crossing each other, a pixel electrode comprising a first oblique line and a second oblique line disposed on the first base substrate and inclined in a different direction from each other with respect to the gate lines, a second base substrate, a common electrode disposed on the second base substrate and alternately positioned with the pixel electrode, wherein a portion of the common electrode overlaps the gate line segment, and a liquid crystal layer disposed between the first and second base substrates.Type: ApplicationFiled: January 24, 2008Publication date: August 7, 2008Inventors: Ji-Hyun KWON, Hyeok-Jin Lee, Byoung-Sun Na, LuJian Gang, Dong-Hyeon Ki, Hwa-Sung Woo
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Publication number: 20080180590Abstract: A liquid crystal display (LCD) panel includes: a first base substrate; a plurality of gate lines and a plurality of data lines disposed on the first base substrate and crossing each other; a pixel electrode pattern disposed on the first base substrate; a storage pattern disposed on the first base substrate, the storage pattern being positioned between consecutive gate lines and substantially in parallel with the gate lines; a second base substrate; a common electrode disposed on the second base substrate and alternately positioned with the pixel electrode; and a liquid crystal layer disposed between the first and second base substrates.Type: ApplicationFiled: January 29, 2008Publication date: July 31, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Hyeok-Jin Lee, Hee-Seop Kim, Byoung-Sun Na, LuJian Gang, Hwa-Sung Woo, Ji-Hyun Kwon
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Publication number: 20080180623Abstract: A liquid crystal display (LCD) device includes a lower substrate including a gate line, a data line, and a thin film transistor, a pixel electrode formed on the lower substrate and including a plurality of first rod-shaped electrodes spaced apart from one another at substantially regular intervals, an upper substrate disposed opposite the lower substrate, a common electrode formed on the upper substrate and including a plurality of second rod-shaped electrodes arranged alternately with the first rod-shaped electrodes at substantially same intervals as the first rod-shaped electrodes, and a liquid crystal disposed between the lower substrate and the upper substrate, wherein a width of each of the first and second rod-shaped electrodes is about 4 ?m to about 6 ?m and the arrangement interval thereof is about 11.5 ?m to about 13.5 ?m.Type: ApplicationFiled: January 28, 2008Publication date: July 31, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Hyeok-Jin Lee, Hee-Seop Kim, Jun-Woo Lee, LuJian Gang, Hwa-Sung Woo