Patents Assigned to Hyundai Display Technology Inc.
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Patent number: 6642985Abstract: The present invention discloses a fringe field switching mode liquid crystal display. The disclosed comprises: a lower and an upper substrates disposed opposite to each other at a predetermined distance, having transparency; a counter electrode and a pixel electrode disposed on the inner surface of the lower substrate with a gate insulating layer interposed and made of transparent conductors, forming a fringe field when a electric field is applied; a black matrix and color filter formed on the inner surface of the upper substrate; an ITO layer disposed on the inner surface of the upper substrate which has the black matrix and the color filter therein; and a liquid crystal layer interposed between the lower and the upper substrates, including a plurality of liquid crystal molecules of negative dielectric anisotropy. In the FFS mode LCD of the present invention, the counter electrode has a plate shape and the pixel electrode has a slit shape.Type: GrantFiled: May 31, 2001Date of Patent: November 4, 2003Assignee: Hyundai Display Technology Inc.Inventors: Hyang Yul Kim, Seung Hee Lee, Seung Ho Hong
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Patent number: 6582523Abstract: An organic source boat structure for organic electro-luminescent display fabricating apparatus is provided to form an organic layer having uniform thickness. The organic source boat structure comprises: a plurality of host cells having a plurality of evaporation holes for evaporation of host organic source; a plurality of dopant cells alternatively arranged to the plurality of host cells, having a plurality of evaporation holes for evaporation of dopant organic source; a contamination control plate arranged between the host cells and the dopant cells; and a side cover to stably support the host cells and the dopant cells.Type: GrantFiled: December 28, 2001Date of Patent: June 24, 2003Assignee: Hyundai Display Technology, Inc.Inventors: Sun Woong Kim, Woo Young Kim, Sung Hoo Ju, Joo Hyeon Lee
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Patent number: 6522380Abstract: Disclosed is a liquid crystal display comprising: a first substrate and a second substrate, the first substrate being disposed opposite the second substrate and being disposed a first distance apart, each of the substrates having an inner surface and an outer surface opposite the inner surface; a liquid crystal layer sandwiched between the inner surfaces of the substrates, the liquid crystal layer including a plurality of liquid crystal molecules; a first electrode formed on the inner surface of the first substrate, the first electrode having a first width; and a second electrode formed on the inner surface of the first substrate, the second electrode having a second width, and spaced apart from the first electrode by a second distance, the first electrode and the second electrode being capable of aligning the liquid crystal molecules using an electric field produced between the first electrode and the second electrode, wherein the first distance is greater in length than the second distance, and the first anType: GrantFiled: March 1, 2001Date of Patent: February 18, 2003Assignee: Hyundai Display Technology Inc.Inventors: Seung Hee Lee, Seok Lyul Lee, Woo Ho Choi, Jung Yeal Lee
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Patent number: 6512503Abstract: The invention discloses a liquid crystal display capable of preventing color shift and also improving response time characteristics.Type: GrantFiled: December 27, 1999Date of Patent: January 28, 2003Assignee: Hyundai Display Technology Inc.Inventors: Hyang Yul Kim, Seung Hee Lee, Won Geon Lee
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Patent number: 6512565Abstract: The present invention provide a homeotropic alignment liquid crystal display having a multi-domain which is capable of obtaining symmetrical viewing angles and simultaneously preventing color shift. An upper substrate and a lower substrate are opposed each other to be spaced apart and a liquid crystal layer interposed between inner surfaces of the upper and lower substrates. A first electrode and a second electrode are formed on the inner surface of the lower substrate, wherein the first electrode and the second electrode form an electric field for driving liquid crystal molecules. Further, homeotropic alignment layers are interposed between the lower substrate and the liquid crystal layer and between the upper substrate and the liquid crystal layer respectively.Type: GrantFiled: May 26, 1999Date of Patent: January 28, 2003Assignee: Hyundai Display Technology Inc.Inventors: Seung Hee Lee, Yun Hee Lee, In Cheol Park
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Patent number: 6500702Abstract: The present invention discloses a method for manufacturing thin film transistor liquid crystal display including the following steps so as to form simultaneously a via hole for contacting a drain electrode and a pixel electrode mutually and the channel of thin film transistor: forming sequentially gate insulation layer, amorphous silicon layer for channel and doped semiconductor layer for ohmic contact, and metal layer for source/drain electrode on the back substrate where the gate electrode and the storage capacitor electrode have been formed; patterning the metal layer for source/drain electrode and the doped semiconductor layer for ohmic contact through a second photolithograph process so that the source electrode, the drain electrode, and the ohmic contacts thereof may be formed; forming a passivation layer on the back substrate where the source electrode and the drain electrode have been formed; patterning the passivation layer, the amorphous silicon layer for channel, and the gate insulation layer throType: GrantFiled: December 13, 2000Date of Patent: December 31, 2002Assignee: Hyundai Display Technology Inc.Inventors: Deuk Su Lee, Jung Mok Jun
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Patent number: 6486935Abstract: A liquid crystal display device which can improve aperture ratio by minimizing light blocking is disclosed. In a liquid crystal display device according to the present invention, gate lines and data lines are arranged to be overlapped with each other, thereby increasing light transmittance region. Furthermore, TFT is disposed between the gate line and data line, thereby further increasing light transmittance region. As a result, aperture ratio is improved.Type: GrantFiled: June 25, 1999Date of Patent: November 26, 2002Assignee: Hyundai Display Technology Inc.Inventors: Jeung Tae Hwang, Jeong Ha Lee, Tae Kyun Jeong, Su Woong Kang, Young Hoon Kim, Sang Jin Kim, Jae Geon You, Doo Hee Lee
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Patent number: 6486934Abstract: The present invention discloses a method for manufacturing a fringe field switching mode liquid crystal display device. Here, a gate bus line has a double layer structure of an ITO layer and an opaque metal layer, and thus the gate bus line and a counter electrode region where a counter electrode is formed are formed at the same time. In addition, a data bus line has a double layer structure of the ITO layer and the opaque metal layer, and thus the data bus line and a pixel electrode region where a pixel electrode is formed are formed at the same time. A polyimide layer is employed as an electrode insulating layer formed between the pixel electrode and the counter electrode.Type: GrantFiled: December 15, 2000Date of Patent: November 26, 2002Assignee: Hyundai Display Technology Inc.Inventors: Suk Shin Yun, Seong Yik Park, Young Tae Kwon
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Patent number: 6485997Abstract: The present invention discloses a method for manufacturing a fringe field switching mode liquid crystal display device.Type: GrantFiled: December 15, 2000Date of Patent: November 26, 2002Assignee: Hyundai Display Technology, Inc.Inventors: Kyung Ha Lee, Sung Hyun Cho
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Liquid crystal display having uneven convex and concave portions in both pixel and common electrodes
Patent number: 6480252Abstract: Disclosed is a liquid crystal display having an improved characteristic of viewing angle by modifying a pixel electrode and a common electrode construction respectively. In a liquid crystal display, upper and lower substrates are opposed to each other and spaced from each other by a predetermined distance. A liquid crystal layer is interposed between the upper and the lower substrates. A pixel electrode is formed at a portion of an inner surface of the lower substrate corresponding to a pixel area, and the pixel electrode has an uneven surface including first convex portions and first concave portions. A common electrode is formed at a portion of an inner surface of the upper substrate corresponding to the pixel electrode, so as to form an electric field together with the pixel electrode. The common electrode has an uneven surface including second convex portions and second concave portions.Type: GrantFiled: June 29, 2000Date of Patent: November 12, 2002Assignee: Hyundai Display Technology Inc.Inventors: Kyung Ha Lee, Seung Moo Rim, Do Hyun Choi -
Patent number: 6476900Abstract: Is disclosed a liquid crystal display having a gate bus line arranged in a first direction on a substrate, a data bus line arranged in a second direction substantially perpendicular to the first direction on the substrate, the data bus line defining a space for an unit pixel of the LCD together with the gate bus line, a counter electrode formed in the unit pixel space of the LCD and having at least three first part extended in the second direction, and a pixel electrode having at least two second parts, the second part extended between the first parts of the counter electrode and disposed in the second direction, the second part slanting to one side of adjacent first parts thereto, so that an intensity of an electric field at one portion of the unit pixel space is different at another portion of the unit pixel space. Accordingly, a color shift of the LCD is prevented.Type: GrantFiled: November 24, 1998Date of Patent: November 5, 2002Assignee: Hyundai Display Technology Inc.Inventors: Seung Hee Lee, In Cheol Park, Hyang Yul Kim, Yun Hee Lee
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Patent number: 6473145Abstract: The present invention discloses a reflective plate having lightweight functioning as a substrate and a reflective LCD using the same.Type: GrantFiled: September 6, 2000Date of Patent: October 29, 2002Assignee: Hyundai Display Technology Inc.Inventors: Hwan Soo Shim, Dong Hae Seo, Jae Jin Lee, Sang Un Choi
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Patent number: 6469762Abstract: Disclosed is a optically compensated splay mode liquid crystal display. The device includes: lower and upper substrates opposed with intervening a selected distance and having driving electrodes in their inner surfaces respectively and a liquid crystal layer sandwiched between the lower and the upper substrates and having a plurality of liquid crystal molecules, wherein no voltage is applied to the driving electrodes, the liquid crystal molecules are arranged in a bend state, and wherein a voltage above a critical voltage is applied to the driving electrodes, the liquid crystal molecules are arranged in a splay state which makes a symmetry of up and down with respect to a middle layer of the liquid crystal layer.Type: GrantFiled: June 29, 2000Date of Patent: October 22, 2002Assignee: Hyundai Display Technology Inc.Inventors: Seung Ho Hong, Hyang Yul Kim, Seung Hee Lee
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Patent number: 6469764Abstract: A liquid crystal display comprising: a lower substrate having a plurality of gate bus lines being parallel each other and data bus lines being parallel each other to define pixels together with the gate bus lines, a thin film transistor provided at each intersection of the data bus line and the gate bus line, a pixel electrode formed in the pixel and connected to the thin film transistor, and a counter electrode formed in the pixel and forming electric field together with the pixel electrode; an upper substrate opposed to the lower substrate to be separated apart; a liquid crystal layer interposed between the lower substrate and the upper substrate, and homeotropic alignment layers formed on the lower substrate and the upper substrate; wherein, the pixel is divided into a plurality of electric field-formed spaces by the counter electrode and the pixel electrode, and the electric fields formed in the respective spaces are formed as diagonal lines with respect to the gate bus lines and the data bus lines therebType: GrantFiled: May 26, 1999Date of Patent: October 22, 2002Assignee: Hyundai Display Technology Inc.Inventors: Hyang Yul Kim, Seung Hee Lee
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Patent number: 6466290Abstract: Disclosed is a fringe field switching mode liquid crystal display (LCD) in which the direction of a fringe field produced at one unit pixel is orthogonal to the direction of a fringe field produced at each of unit pixels adjacent to the one unit pixel. The disclosed fringe field switching mode LCD includes counter electrodes and pixel electrodes arranged on a back substrate to produce a fringe field having horizontal elements parallel to data bus lines at one unit pixel while producing a fringe field having horizontal elements parallel to gate bus lines at each of unit pixels longitudinally and laterally adjacent to the one unit pixel. In this LCD, the rubbing axis of a back horizontal alignment film defines an angle of ±45±10° with respect to each of the gate bus lines.Type: GrantFiled: November 29, 2000Date of Patent: October 15, 2002Assignee: Hyundai Display Technology Inc.Inventors: Hyang Yul Kim, Seung Hee Lee
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Patent number: 6466287Abstract: Disclosed is a method for forming a reflector of a reflective LCD capable of improving a viewing angle characteristic while simplifying a forming process, the method comprising the steps of: applying a photoresist film on an insulating substrate; dispersing a plurality of spacers over a surface of the photoresist film; curing the photoresist film; rubbing the spacers-dispersed and cured photoresist film, thereby removing the spacers; and performing a vapor deposition of a metal film having a high reflectivity on the photoresist film.Type: GrantFiled: June 28, 2000Date of Patent: October 15, 2002Assignee: Hyundai Display Technology Inc.Inventors: Hwan Su Shim, Dong Hae Seo, Sang Un Choi
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Patent number: 6462800Abstract: A liquid crystal display device, and a manufacturing method thereof, having an existing box-like counter electrode connected to the source/drain electrode through a first contact hole in the gate insulating film and so is used as the pixel electrode, and the existing slit-shaped counter electrode is connected to the non-transparent metallic common bus line through a second contact hole in the gate insulating film and so becomes the counter electrode while maintaining the existing process layer structure as it is, so that even if a short circuit occurs between the gate bus line and the pixel electrode in the same layer due to the particle, degradation is limited to only one pixel, which results in enhancing of the process yield.Type: GrantFiled: June 29, 2000Date of Patent: October 8, 2002Assignee: Hyundai Display Technology Inc.Inventors: Hyang Yul Kim, In Cheol Park, Seung Hee Lee
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Patent number: 6462801Abstract: A liquid crystal display, comprising: a plurality of gate lines being spaced in a selected distance; a plurality of data lines being spaced in a selected distance, the data lines where a data line driving signal is provided being crossed with the gate lines to define a plurality of R, G and B pixel regions, each of data lines being split into a pair of data lines; a plurality of R, G and B dots disposed in the R, G, and B pixel regions, respectively; and a plurality of switching devices disposed in the R, G, B pixel regions, each being connected to corresponding gate line and data line of a plurality of gate lines and data lines; wherein by the split data lines, each of the R, G and B pixel regions is divided into a plurality of R, G and B sub pixel regions; and each of the R, G and B dots includes a plurality of R, G and B subdots, each of R, G and B subdots being disposed in each of R, G and B sub pixel regions, respectively.Type: GrantFiled: May 8, 2001Date of Patent: October 8, 2002Assignee: Hyundai Display Technology Inc.Inventors: Jae Hak Shin, Gyo Un Choi
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Patent number: 6456351Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.Type: GrantFiled: May 26, 1999Date of Patent: September 24, 2002Assignee: Hyundai Display Technology Inc.Inventors: Hyang Yul Kim, Seung Hee Lee
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Patent number: 6452658Abstract: Disclosed is a reflective liquid crystal display having high transmittance and a method for manufacturing the same.Type: GrantFiled: December 11, 2001Date of Patent: September 17, 2002Assignee: Hyundai Display Technology Inc.Inventors: In Cheol Park, Seung Hee Lee, Won Geon Lee