Patents by Inventor Hyung-Seok Jang
Hyung-Seok 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: 20110194050Abstract: A liquid crystal display device and a method for driving the same are provided. The liquid crystal display device includes a first liquid crystal layer selectively driven by a first electric field in a first direction; and a second liquid crystal layer selectively driven a second electric field in a second direction, the second direction being different from the first direction.Type: ApplicationFiled: April 15, 2011Publication date: August 11, 2011Inventors: Hyun Suk Jin, Hyung Seok Jang
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Patent number: 7982841Abstract: A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.Type: GrantFiled: April 12, 2010Date of Patent: July 19, 2011Assignee: LG Display Co., Ltd.Inventors: Hyun Suk Jin, Hyung Seok Jang
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Patent number: 7948582Abstract: A liquid crystal display device and a method for driving the same are provided. The liquid crystal display device includes a first liquid crystal layer selectively driven by a first electric field in a first direction; and a second liquid crystal layer selectively driven a second electric field in a second direction, the second direction being different from the first direction.Type: GrantFiled: June 16, 2006Date of Patent: May 24, 2011Assignee: LG Display Co., Ltd.Inventors: Hyun Suk Jin, Hyung Seok Jang
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Patent number: 7940358Abstract: Provided are an LCD device that can control a viewing angle freely and a manufacturing method thereof. The LCD device includes a first substrate, a second substrate, and an LC layer interposed between the first and second substrates. The LCD device further includes red, green, blue, and viewing angle controlling subpixels. These subpixels are driven in a VA mode. The red, green, and blue subpixels have a transflective structure. The viewing angle controlling subpixel has a transmissive or transflective structure.Type: GrantFiled: July 17, 2007Date of Patent: May 10, 2011Assignee: LG Display Co., Ltd.Inventors: Hyun Suk Jin, Hyung Seok Jang, Tae Han Kim
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Patent number: 7924375Abstract: An in-plane switching mode liquid crystal display device includes a first substrate and a second substrate, gate lines and data lines intersecting each other on the first substrate and defining red, green, blue sub-pixels, and viewing angle controlling sub-pixels, thin film transistors at the intersections of the gate lines and the data lines, first pixel electrodes and first common electrodes spaced apart from each other and alternately disposed at the red, green, and blue sub-pixels, second pixel electrodes at the viewing angle controlling sub-pixels, second common electrodes on the second substrate and at positions corresponding to the second pixel electrodes, and a liquid crystal layer between the first substrate and the second substrate.Type: GrantFiled: March 27, 2006Date of Patent: April 12, 2011Assignee: LG Display Co., Ltd.Inventors: In Jae Chung, Hyun Suk Jin, Hyung Seok Jang, Deuk Su Lee
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Patent number: 7903063Abstract: Provided is a liquid crystal panel that limits a viewing angle. The liquid crystal panel includes a plurality of color pixels and a plurality of interference sub-pixels. Each of the color pixels includes red (R), green (G) and blue (B) sub-pixels. The interference sub-pixels are included in each of the color pixels and disposed on the same plane as the color pixels to control light that penetrates the liquid crystal panel and travels in side directions of the liquid crystal panel, except the front direction thereof. The viewing angle can be controlled by the interference sub-pixels. Since the interference sub-pixels and the color sub-pixels are disposed on the same plane, the thickness and weight of the liquid crystal panel do not increase. Further, it is possible to prevent the decrease of the light quantity and the degradation of the brightness.Type: GrantFiled: June 15, 2006Date of Patent: March 8, 2011Assignee: LG. Display Co., Ltd.Inventors: In Jae Chung, Hyung Seok Jang, Hyun Suk Jin, Joon Kyu Park, Sook Kyung You
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Patent number: 7800570Abstract: An LCD device is disclosed in which the LCD device is driven in an FFS mode and a VAC mode during a frame frequency period to obtain a narrow viewing angle. The method for driving the LCD device includes driving the LCD device in an FFS mode during a frame frequency period to obtain a wide viewing angle, and driving the LCD device in both the FFS mode and a VAC mode during the frame frequency period by dividing the frame frequency period, thereby obtaining a narrow viewing angle.Type: GrantFiled: June 29, 2006Date of Patent: September 21, 2010Assignee: LG. Display Co., Ltd.Inventors: Hyun Suk Jin, Hyung Seok Jang
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Publication number: 20100197189Abstract: A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.Type: ApplicationFiled: April 12, 2010Publication date: August 5, 2010Inventors: Hyun Suk Jin, Hyung Seok Jang
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Patent number: 7760303Abstract: A liquid crystal display device includes a first substrate; a second substrate facing the first substrate; a liquid crystal layer interposed between the first and second substrates; first, second, third, and fourth sub-pixels defined on the first and second substrates; a first electric field distorting pattern on the first, second and third sub-pixels on the first substrate; a second electric field distorting pattern on the first, second and third sub-pixels on the second substrate; a third electric field distorting pattern on the fourth sub-pixel on the first substrate; and a fourth electric field distorting pattern on the fourth sub-pixel on the second substrate, wherein the first and second electric field distorting patterns are parallel to each other, and wherein the third and fourth electric field distorting patterns are parallel to each other at an angle that is different than that of the first and second distorting patterns.Type: GrantFiled: December 15, 2006Date of Patent: July 20, 2010Assignee: LG Display Co., Ltd.Inventors: Hyung-Seok Jang, In-Jae Chung, Joon-Kyu Park, Hyun-Suk Jin
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Publication number: 20100141569Abstract: A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth anType: ApplicationFiled: February 17, 2010Publication date: June 10, 2010Applicant: LG DISPLAY CO., LTD.Inventors: Hyung-Seok JANG, Joon-Kyu PARK, Hyun-Suk JIN
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Patent number: 7728941Abstract: A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.Type: GrantFiled: June 5, 2006Date of Patent: June 1, 2010Assignee: LG Display Co., Ltd.Inventors: Hyun Suk Jin, Hyung Seok Jang
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Patent number: 7692750Abstract: A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth anType: GrantFiled: December 15, 2006Date of Patent: April 6, 2010Assignee: LG Display Co., Ltd.Inventors: Hyung-Seok Jang, Joon-Kyu Park, Hyun-Suk Jin
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Publication number: 20090310045Abstract: A liquid crystal display device includes first and second substrates facing and spaced apart from each other, each of the first and second substrates having a first sub-pixel region, a second sub-pixel region, a third sub-pixel region, a fourth sub-pixel region and a fifth sub-pixel region for adjusting a viewing angle, the first, second, third and fourth sub-pixel regions surrounding the fifth sub-pixel region; a liquid crystal layer between the first and second substrates; a plurality of first pixel electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate; a plurality of first common electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate, the plurality of first common electrodes alternating with the plurality of first pixel electrodes; a second pixel electrode in the fifth sub-pixel region on the first substrate; and a second common electrode in the fifth sub-pixel region on the second substrate, the second common electrodType: ApplicationFiled: August 24, 2009Publication date: December 17, 2009Applicant: LG DISPLAY CO., LTD.Inventors: Joon-Kyu Park, Hyun-Suk Jin, Hyung-Seok Jang
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Patent number: 7626656Abstract: A liquid crystal display (LCD) device for switching a display mode between a wide viewing angle and a narrow viewing angle includes an LCD panel including an array substrate, a color filter substrate, and a liquid crystal layer formed between inner surfaces of the array substrate and the color filter substrate, and a viewing angle control cell adjacent to the LCD panel, the viewing angle control cell including a lower substrate on which a first electrode is formed, an upper substrate on which a second electrode is formed, and a dichroic liquid crystal layer interposed between the upper substrate and the lower substrate.Type: GrantFiled: December 27, 2005Date of Patent: December 1, 2009Assignee: LG Display Co., Ltd.Inventors: Hyung-Seok Jang, Hyun-Suk Jin
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Patent number: 7605892Abstract: A liquid crystal display (LCD) device for switching a display mode between wide and narrow viewing angle, and a method for fabricating the same, is presented. The LCD device has an LCD panel and a viewing angle control cell. The LCD panel has array and color filter substrates and a liquid crystal layer formed between the substrates. The viewing angle control cell contains a lower substrate that contacts the LCD panel and has a first electrode, an upper substrate having a second electrode, and a ferroelectric liquid crystal layer between the upper and lower substrates. The viewing angle control cell switches the LCD device between wide and narrow viewing angle modes when driven.Type: GrantFiled: December 29, 2005Date of Patent: October 20, 2009Assignee: LG. Display Co., Ltd.Inventors: Hyung-Seok Jang, Hyun-Suk Jin
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Patent number: 7599035Abstract: A liquid crystal display device includes first and second substrates facing and spaced apart from each other, each of the first and second substrates having a first sub-pixel region, a second sub-pixel region, a third sub-pixel region, a fourth sub-pixel region and a fifth sub-pixel region for adjusting a viewing angle, the first, second, third and fourth sub-pixel regions surrounding the fifth sub-pixel region; a liquid crystal layer between the first and second substrates; a plurality of first pixel electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate; a plurality of first common electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate, the plurality of first common electrodes alternating with the plurality of first pixel electrodes; a second pixel electrode in the fifth sub-pixel region on the first substrate; and a second common electrode in the fifth sub-pixel region on the second substrate, the second common electrodType: GrantFiled: December 15, 2006Date of Patent: October 6, 2009Assignee: LG Display Co., Ltd.Inventors: Joon-Kyu Park, Hyun-Suk Jin, Hyung-Seok Jang
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Patent number: 7542109Abstract: A liquid crystal display (LCD) device is switchable between a wide viewing angle display mode and a narrow viewing angle display mode. The LCD device includes and LCD panel having an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate and a viewing angle control cell disposed adjacent to the LCD panel. The viewing angle control cell has first and second substrates, first and second electrodes disposed between the first and second substrates, an insulating layer disposed between the first and second electrodes, and a sheet layer having pigments disposed between the first and second substrates.Type: GrantFiled: December 28, 2005Date of Patent: June 2, 2009Assignee: LG Display Co., Ltd.Inventors: Hyung-Seok Jang, Hyun-Suk Jin
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Publication number: 20080143911Abstract: Provided are an LCD device that can control a viewing angle freely and a manufacturing method thereof. The LCD device includes a first substrate, a second substrate, and an LC layer interposed between the first and second substrates. The LCD device further includes red, green, blue, and viewing angle controlling subpixels. These subpixels are driven in a VA mode. The red, green, and blue subpixels have a transflective structure. The viewing angle controlling subpixel has a transmissive or transflective structure.Type: ApplicationFiled: July 17, 2007Publication date: June 19, 2008Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Hyun Suk Jin, Hyung Seok Jang, Tae Han Kim
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Publication number: 20080143930Abstract: A liquid crystal display device and a method of manufacturing the liquid crystal device are disclosed. The liquid crystal display device includes a red subpixel, a green subpixel, a blue subpixel, and a viewing angle controlling subpixel. The red, green, and blue subpixels are driven in a TN method, and the viewing angle controlling subpixel is driven in an ECB method. Therefore, the liquid crystal display device provides flexibility in a security range to a user, and not only can be used for one person but also can be used for two or more persons to view an image of high quality without inconvenience while securing security.Type: ApplicationFiled: December 17, 2007Publication date: June 19, 2008Inventors: Hyun Suk Jin, Hyung Seok Jang
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Publication number: 20080001849Abstract: A dual-view liquid crystal display device includes a display panel to display images; and a switching panel including first and second regions, the first and second regions controlled to represent a single image or different images displayed on the display panel, wherein a line width of the first region is adjustable. And, a method for driving a dual-view display device includes dividing the images displayed on the display panel in different directions by controlling a switching panel that includes first and second regions; and adjusting a line width of the first region in accordance with a viewing angle of a user.Type: ApplicationFiled: December 6, 2006Publication date: January 3, 2008Inventors: Hyun Suk Jin, Ho Jin Ryu, Sun Hwa Lee, Hyung Seok Jang