Patents by Inventor Dong Yeung Kwak
Dong Yeung Kwak 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: 20100041174Abstract: An LCD panel and a method for manufacturing the same is disclosed, in which light leakage is prevented from occurring by forming a dummy pattern in an array peripheral region. The LCD panel includes a first substrate having an array region and an array peripheral region, a gate line on the first substrate, a gate insulating film on the entire surface of the first substrate including the gate line, a data line arranged to cross the gate line for defining a pixel region on the array region, a light leakage prevention film formed between the gate and/or data lines of the array peripheral region for preventing light leakage in the panel, and a TFT and a pixel electrode formed in each pixel region.Type: ApplicationFiled: October 20, 2009Publication date: February 18, 2010Inventors: Dong Yeung KWAK, Ki Tae Kim
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Patent number: 7619702Abstract: An LCD panel and a method for manufacturing the same is disclosed, in which light leakage is prevented from occurring by forming a dummy pattern in an array peripheral region. The LCD panel includes a first substrate having an array region and an array peripheral region, a gate line on the first substrate, a gate insulating film on the entire surface of the first substrate including the gate line, a data line arranged to cross the gate line for defining a pixel region on the array region, a light leakage prevention film formed between the gate and/or data lines of the array peripheral region for preventing light leakage in the panel, and a TFT and a pixel electrode formed in each pixel region.Type: GrantFiled: April 11, 2005Date of Patent: November 17, 2009Assignee: LG Display Co., Ltd.Inventors: Dong Yeung Kwak, Ki Tae Kim
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Patent number: 7616268Abstract: A liquid crystal display panel according to an embodiment of the present invention includes a first shorting bar inspecting a signal line in a non-display area of a first substrate; a second shorting bar inspecting the signal line in the non-display area of the inspected first substrate attached to a second substrate; a first shorting line connected to at least one of the signal lines and the first and second shorting bars; and a second shorting line connected the second shorting bar with the remaining signal line except the signal line connected to the first shorting line.Type: GrantFiled: October 27, 2005Date of Patent: November 10, 2009Assignee: LG Display Co., Ltd.Inventors: Dong Yeung Kwak, Chul Sang Shin
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Patent number: 7453534Abstract: A liquid crystal display (LCD) panel that has even luminance with high picture quality is disclosed. The LCD panel includes a first substrate provided with a plurality of gate and data lines, the gate lines being arranged to cross the data lines to define a plurality of pixel regions in a matrix arrangement; a second substrate provided with a black matrix layer to shield portions other than the pixel region from light; and a liquid crystal layer injected between the first and second substrates, wherein the pixel regions at a surrounding portion have an aperture ratio lower than that of the pixel regions at the other portions.Type: GrantFiled: December 3, 2004Date of Patent: November 18, 2008Assignee: LG Display Co., Ltd.Inventors: Yong Ik Bang, Dong Yeung Kwak, Sung Il Park
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Patent number: 7414697Abstract: A liquid crystal display has a gate line structure for serving as a storage electrode and a black matrix and performing a repair function. In the liquid crystal display, a gate dummy pattern is formed in such a manner to be extended in the vertical direction from the gate line and to overlap with the data line and the pixel electrode. The gate dummy pattern branches from the gate line, overlaps the edge of a pixel, serves a storage electrode and a black matrix, and permits repair upon breakage of a data line.Type: GrantFiled: October 3, 2000Date of Patent: August 19, 2008Assignee: LG Display Co., Ltd.Inventors: Woo Hyuk Choi, Dong Yeung Kwak, Byoung Ho Lim
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Patent number: 7394515Abstract: A liquid crystal display panel includes first and second substrates attached to each other by a seal pattern, the seal pattern being outside of a display region, a liquid crystal layer between the first and second substrates in the display region, a silver dot outside the seal pattern for electrically connecting the first substrate to the second substrate, and a first line-on-glass line and a second line-on-glass line on the first substrate outside the display region, the first line-on-glass line is completely in a pad region outside of the silver dot.Type: GrantFiled: December 27, 2004Date of Patent: July 1, 2008Assignee: LG Display Co., Ltd.Inventors: Dong-Yeung Kwak, Wang-Seob Kil
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Patent number: 7365823Abstract: A method for cutting a liquid crystal display panel includes forming a first scribe line along attached first and second mother substrates to form a first region having a plurality of first-sized LCD panels and a first edge of the first region and to form a second region having a plurality of second-sized LCD panels and a first edge of the second region, separating the plurality of first-sized LCD panels formed at the first region into individual first-sized LCD panels, and separating the plurality of second-sized LCD panels formed at the second region into individual second-sized LCD panels.Type: GrantFiled: June 1, 2004Date of Patent: April 29, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Dong-Yeung Kwak, Seung-Chan Shin, Sung-Ho Hong, Wang-Seob Kil
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Patent number: 7312111Abstract: An LCD panel includes a plurality of gate lines and gate electrodes formed on a substrate and a gate insulating film formed on the substrate including the gate lines and the gate electrodes. A semiconductor film is formed in a region on the gate insulating film and an ohmic contact film formed on the semiconductor film. A plurality of data lines cross the gate lines; a source electrode is formed on the ohmic contact film; and a pixel electrode is formed in a pixel region defined by the gate and data lines. A drain electrode is formed on the ohmic contact film, and has an uneven width. Since a portion of drain electrode that overlaps with the gate electrode has a smaller width than a width of other portions of the drain electrode, variation in an area of the drain electrode overlapped with the gate electrode is small, so that variation of the parasitic capacitance can be reduced, thereby improving picture quality.Type: GrantFiled: December 27, 2001Date of Patent: December 25, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Dong Yeung Kwak, Byoung Ho Lim
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Patent number: 7271856Abstract: A liquid crystal display device and method for fabricating the same is disclosed. The liquid crystal display device includes: first and second substrates; a plurality of gate lines and data lines disposed crossly on the first substrate to define a pixel region; a thin film transistor formed at a cross point of the gate lines and the data lines; a passivation film coated on the entire surface of the first substrate including the thin film transistor; a pixel electrode connected to the thin film transistor, partially overlapping with the neighboring gate lines and the neighboring data lines and formed on the passivation film corresponding to the pixel region; and a black matrix formed on a predetermined area of the second substrate.Type: GrantFiled: December 27, 2002Date of Patent: September 18, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Kwang Min Kim, Dong Yeung Kwak
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Patent number: 7262827Abstract: A liquid crystal display has a pad structure. The pad structure includes at least one pad formed on a substrate, an insulating film formed on the pad, and at least one conductive layer connected to the pad through contact holes defined through the insulating film. The insulating film covers side surfaces of the pad and a portion of the substrate adjacent to the side surfaces of the pad.Type: GrantFiled: June 29, 2001Date of Patent: August 28, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Soon Sung Yoo, Dong Yeung Kwak, Hu Sung Kim, Yong Wan Kim, Dug Jin Park, Yu Ho Jung, Woo Chae Lee
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Patent number: 7173684Abstract: A liquid crystal display device, and a fabricating method thereof, that is capable of providing uniform liquid cell gaps. A main seal defines a liquid crystal injection area. A first step coverage-compensating layer is provided between a substrate on which the main seal has been coated and the main seal. A plurality of dummy seals is arranged external to the main seal. A second step coverage-compensating layer having the same thickness as the first step coverage-compensating layer is provided between the substrate on which the dummy seals are arranged and the dummy seals. Accordingly, a main seal and dummy seals having the same thickness produce uniform liquid crystal cell gaps. The liquid crystal display device is beneficially made by a fabrication process employing four or five masks.Type: GrantFiled: June 29, 2001Date of Patent: February 6, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Soon Sung Yoo, Dong Yeung Kwak, Yu Ho Jung, Yong Wan Kim, Woo Chae Lee, Dug Jin Park, Hoo Sung Kim
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Patent number: 7151586Abstract: A liquid crystal display device is provided wherein an adhesive force between a seal and a lower plate is improved upon bonding of an upper plate to the lower plate. In high aperture liquid crystal display panels, organic protective films are used to reduce dielectric constants. However, the seal, used when bonding the upper and lower plates of the liquid crystal panel, generally do not adhere well to organic materials. In this invention, holes are generated in the organic protective film so that the seal bonds with inorganic materials such as the lower glass plate or the gate insulating film.Type: GrantFiled: May 14, 2004Date of Patent: December 19, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Dong Yeung Kwak, Gun Hee Lee
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Patent number: 7123315Abstract: A liquid crystal display (LCD) panel that has even luminance with high picture quality is disclosed. The LCD panel includes a first substrate provided with a plurality of gate and data lines, the gate lines being arranged to cross the data lines to define a plurality of pixel regions in a matrix arrangement; a second substrate provided with a black matrix layer to shield portions other than the pixel region from light; and a liquid crystal layer injected between the first and second substrates, wherein the pixel regions at a surrounding portion have an aperture ratio lower than that of the pixel regions at the other portions.Type: GrantFiled: April 26, 2005Date of Patent: October 17, 2006Assignee: LG. Philips LCD Co., Ltd.Inventors: Yong Ik Bang, Dong Yeung Kwak, Sung Il Park
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Patent number: 7102160Abstract: TFT LCD including a first substrate and a second substrate, a scanning line on the first substrate, a signal line formed to cross the scanning line, a channel layer formed along the signal line and extended to a portion of the scanning line, source and drain electrodes formed separated on the channel layer over the scanning line, a pixel electrode connected to the drain electrode, and a liquid crystal layer formed between the first substrate and the second substrate.Type: GrantFiled: September 12, 2000Date of Patent: September 5, 2006Assignee: LG.Philips LCD CO, Ltd.Inventor: Dong Yeung Kwak
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Patent number: 7041521Abstract: An array substrate of the present invention includes a storage capacitor that has a storage-on-gate structure. One embodiment of the present invention discloses the array substrate having a metal island pattern on the substrate beneath a drain electrode. The metal island pattern is disposed beneath a drain contact hole through which a pixel electrode contacts the drain electrode. Since the metal island pattern has the same thickness as the gate line, the passivation layer can have the same height both in a drain region and in a storage region. Over-etching is minimized with the passivation layer in the drain and storage region having the same uniform thickness.Type: GrantFiled: December 6, 2004Date of Patent: May 9, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Sang-Moo Song, Dong-Yeung Kwak, Se-Il Sohn
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Patent number: 7027120Abstract: A liquid crystal display device and a method of fabricating the same are disclosed in the present invention. More specifically, the method includes the steps forming a gate line on the first substrate sequentially forming a first insulating layer, an amorphous silicon layer, and a metal layer on the first substrate, patterning the metal layer to form a data line, forming a second insulating layer on the data line, patterning the second insulating layer and the amorphous silicon layer to form a passivation layer and an active layer, respectively, forming a pixel electrode at a pixel region defined by the gate and data lines, assembling the first substrate and the second substrate having a black matrix thereon, wherein the black matrix vertically overlaps at least one boundary line defined by different exposures during step-and-repeat exposure processes; and forming a liquid crystal layer between the first and second substrates.Type: GrantFiled: January 9, 2004Date of Patent: April 11, 2006Assignee: LG. Philips LCD Co., Ltd.Inventors: Soon-Sung Yoo, Dong-Yeung Kwak, Hu-Sung Kim, Yu-Ho Jung, Yong-Wan Kim, Duk-Jin Park, Woo-Chae Lee
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Patent number: 7015984Abstract: An array substrate of the present invention includes a storage capacitor that has a storage-on-gate structure. The storage capacitor includes a gate line as a first electrode and a capacitor electrode as a second electrode. The capacitor electrode particularly has an extension that protruding from the capacitor electrode into a pixel region. Thus, when connecting a pixel electrode to the storage capacitor, the pixel electrode contacts the extension of the capacitor electrode. Since a storage contact hole through which the pixel electrode contacts the extension, a short between the pixel electrode and the gate line in the storage capacitor is prevented.Type: GrantFiled: August 27, 2002Date of Patent: March 21, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Sang-Moo Song, Dong-Yeung Kwak
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Patent number: 6992364Abstract: A TFT array substrate has a PAI pattern, and the PAI pattern has an over-etched portion of the pure amorphous silicon layer. This over-etched portion prevents a short between the pixel electrode and the pure amorphous silicon layer (i.e., the active layer).Type: GrantFiled: September 3, 2003Date of Patent: January 31, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Soon-Sung Yoo, Dong-Yeung Kwak, Hu-Sung Kim, Yu-Ho Jung, Yong-Wan Kim, Duk-Jin Park, Woo-Chae Lee
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Patent number: 6987548Abstract: A liquid crystal display (LCD) device and method for manufacturing the same in which a plurality of patterns are formed on one substrate reduces the manufacturing cost and simplifies the process steps by minimizing the number of masks required to form the patterns. The LCD device includes first and second substrates, a thin film transistor (TFT) formed in a predetermined region on the first substrate, a pixel electrode formed in a pixel region on the first substrate, a color filter layer formed on the pixel electrode, a black matrix pattern formed in a region other than the pixel electrode, and a liquid crystal layer formed between the first and second substrates. The method for manufacturing the LCD device having a pixel region defined by gate and data lines, includes the steps of forming a TFT on a first substrate, forming a black matrix pattern in a region other than the pixel region, forming a pixel electrode in the pixel region, and forming a color filter layer on the pixel electrode.Type: GrantFiled: September 16, 2003Date of Patent: January 17, 2006Assignee: LG.Philips LCD Co., Ltd.Inventors: Byoung Ho Lim, Soon Sung Yoo, Dong Yeung Kwak, Jae Gu Lee
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Patent number: 6975378Abstract: A liquid crystal display device, and a fabricating method thereof, with improved bonding of an upper plate to a lower plate. The lower plate includes an organic protective film over an inorganic gate insulating layer that is on a substrate. Channels through the organic protective film expose either metal patterns or the gate insulating layer. A seal coated with a sealant is then placed over the organic protective film and channels. The sealant passes through the channels to the metal patterns or to the gate insulating layer. Bonding of the seal to the lower plate is improved by the sealant that contacts the metal patterns and/or the gate insulating layer. During LCD fabrication, the metal patterns act as etch stops when etching the channels. Alternatively, an etch stop semiconductor layer is placed on the gate insulating film. The etch stops prevent the etching process from exposing the lower substrate.Type: GrantFiled: September 1, 2004Date of Patent: December 13, 2005Assignee: LG.Philips LCD Co., Ltd.Inventors: Dong Yeung Kwak, Kwang Seop Park