Patents by Inventor Yong-wan Kim

Yong-wan Kim 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).

  • Patent number: 6624871
    Abstract: A method of removing pattern defects in a liquid crystal display more particularly, a liquid crystal display having an IOP structure where a transparent conductive layer is formed on a passivation layer, removes pattern defects in active layers or data wires of an LCD simultaneously and quickly, without causing any damage on other parts of the LCD, by exposing pattern defects in the air, then carrying out an etching process in use of pixel electrodes and an etch-stop layer as an etch mask.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: September 23, 2003
    Assignee: LG. Philips LCD Co., Ltd.
    Inventor: Yong Wan Kim
  • Patent number: 6618110
    Abstract: A liquid crystal display device includes a transparent substrate, a gate electrode disposed on the transparent substrate, a gate insulating film disposed on the transparent substrate and covering the gate electrode, an active layer disposed on the gate insulating film, an ohmic contact layer disposed on the active layer, a source electrode disposed on the ohmic contact layer and at one side of the gate electrode, a drain electrode disposed on the ohmic contact layer and at another side of the gate electrode, the drain electrode including an L-shaped portion and a plurality of protrusions, a protective layer disposed on the active layer covering upper surfaces of the source electrode and the drain electrode, and a pixel electrode disposed on the protective layer and electrically contacting a side surface of the drain electrode.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: September 9, 2003
    Assignee: 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
  • Patent number: 6599786
    Abstract: A method of manufacturing an LCD array substrate and LCD made by that method are disclosed. A plurality of gate lines, gate electrodes and gate extension lines are formed by depositing and patterning a first metallic material using a first mask. A first insulating layer is then formed. A plurality of data lines, source electrodes, drain electrodes, and capacitor electrodes are then formed by depositing and patterning suitable materials using a second mask. A passivation layer is then formed and patterned to create first and second contact holes using a third mask. The first contact holes expose the drain electrodes, the second contact holes expose the capacitor electrodes. A plurality of pixel electrodes are then formed by depositing and patterning a transparent conductive layer using a fourth mask. The pixel electrodes contact the drain electrodes through the first contact holes and contact the capacitor electrodes through the second contact holes.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: July 29, 2003
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byung-chul Ahn, Byoung-ho Lim, Soon-sung Yoo, Yong-wan Kim
  • Patent number: 6600546
    Abstract: The present invention discloses an array substrate for an active-matrix LCD device and a method of fabricating the same. The array substrate reduces the number of masks used in the fabrication process so that reliability is enhanced and the cost is reduced over the conventional device and method.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: July 29, 2003
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Byung-chul Ahn, Soon-sung Yoo, Yong-wan Kim, Keuk-sang Kwon
  • Publication number: 20030125636
    Abstract: An apparatus for positioning and marking a location of an electromyography (EMG) electrode includes a housing having a back surface, an EMG sensor for receiving the EMG signal, an amplifying circuit for amplifying the EMG signal to generate an amplified EMG signal and an audio output terminal for outputting the amplified EMG signal as the audio EMG signal. The examinee may directly position and mark the location of the EMG electrode and may easily detect the fatigue rate of the muscle or the abnormal condition of the muscle by using the sound of the audio equipment.
    Type: Application
    Filed: March 13, 2002
    Publication date: July 3, 2003
    Inventors: Hyuk Jeong, Hyun Bin Kim, Ki Ho Kim, Ki Hong Kim, Hong Kee Kim, Hyun Myung, Sang Won Ghyme, Ki Suk Lee, Yong Wan Kim, Jin Sung Choi
  • Publication number: 20030123016
    Abstract: A liquid crystal display device including a first and second substrates coupled to each other having a dummy region and a panel region, at least one first seal in the dummy region, a second seal along a peripheral portion of the panel region, wherein the second seal has a liquid crystal injection port and a liquid crystal layer between the first and second substrates, wherein a cell gap-determining thickness of the first seal is substantially same as a cell gap-determining thickness of the second seal.
    Type: Application
    Filed: December 5, 2002
    Publication date: July 3, 2003
    Applicant: LG.Philips LCD Co. Ltd.
    Inventor: Yong-Wan Kim
  • Patent number: 6580474
    Abstract: A liquid crystal display device and a method of fabricating the same are disclosed. The device, as disclosed, reduces the number of masks required for fabrication. Thus, cost is reduced and yield is increased. The device includes a plurality of gate lines, a plurality of data lines crossing the gate lines such that active regions are defined near the crossover points, thin film transistors are formed near the active regions, and a plurality of pixel electrodes are formed within regions defined by the adjacent gate and data lines. Also, pixel electrodes overlap gate lines and the two electrodes function as a storage capacitor.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: June 17, 2003
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Byung Chul Ahn, Byung Ho Lim, Soon Sung Yoo, Yong Wan Kim, Young Hun Ha
  • Publication number: 20030109797
    Abstract: A chromatic display-type biofeedback system and method using brain waves are disclosed. After the brain waves generated from the subject, which are indicative of anxious or relaxed psychological state, are recoded by himself or herself, the subject transforms each psychological state into a chromatic bar represented by a desired color. And then, when the subject measures his or her brain waves, a specific color is displayed on a monitor, so that the subject may verify the present psychological state and repeatedly remind him or her of a color designated as a relaxed state to induce the reaching of the relaxed state. At that time, after a psychological state of the subject is verified by modeling the brain waves using a Hidden Markov Model (HMM) which is used in a statistical signal process, the results is displayed as a chromatic bar designated by the subject on a monitor, so that conversion of the relevant psychological state can be rapidly and easily achieved.
    Type: Application
    Filed: February 7, 2002
    Publication date: June 12, 2003
    Inventors: Ki Hong Kim, Hyun Bin Kim, Ki Ho Kim, Jin Sung Choi, Hyun Myung, Hyuk Jeong, Hong Kee Kim, Sang Won Ghyme, Yong Wan Kim, Ki Suk Lee
  • Publication number: 20030090601
    Abstract: An array panel for a liquid crystal display device includes a substrate, a gate line and a gate electrode on the substrate, wherein the gate line is connected to the gate electrode, a gate insulating layer on the gate line and the gate electrode, an active layer on the gate insulating layer, an ohmic contact layer on the active layer, a data line, a source electrode, and a drain electrode on the ohmic contact layer, wherein the data line, the source electrode, and the drain electrode are formed of molybdenum, a passivation layer on the data line, the source and drain electrodes, and a pixel electrode on the passivation layer, wherein the ohmic contact layer has the same shape as the data line, the source, and drain electrodes, and the active layer has the same shape as the data line, and the source electrode, and the drain electrode except for a channel area between the source electrode and the drain electrode, and the channel area has a “U” shape.
    Type: Application
    Filed: May 9, 2002
    Publication date: May 15, 2003
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Yong Wan Kim, Dong-Jin Park
  • Patent number: 6559920
    Abstract: The present invention discloses a method of manufacturing a liquid crystal display device, including: providing a substrate; depositing sequentially a first metal layer and a first insulating layer on the substrate; patterning the first metal layer and the first insulating layer using a first mask to form a gate line and a first gate insulating layer; depositing sequentially a second gate insulating layer, a pure semiconductor layer, a doped semiconductor layer and a second metal layer over the whole substrate; patterning the second metal layer using a second mask to form a data line, source and drain electrodes, a capacitor electrode, the capacitor electrode overlapping a portion of the gate line; etching the doped semiconductor layer between the source and drain electrodes to form a channel region; depositing a third insulating layer over the whole substrate; patterning the third insulating layer using a third mask to form a passivation film, the passivation film having a smaller width than the data line an
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: May 6, 2003
    Assignee: L G. Philips LCD Co., Ltd.
    Inventors: Byung-Chul Ahn, Soon-Sung Yoo, Yong-Wan Kim
  • Patent number: 6509940
    Abstract: A liquid crystal display device and a fabricating method thereof wherein four masks are used so as to reduce a process. In the device, a gate electrode is formed on a transparent substrate. A gate insulating film is formed on the transparent substrate to cover the gate electrode. An active layer is provided at a portion corresponding to the gate electrode on the gate insulating film. Source and drain electrodes are intervened by an ohmic contact layer on the active layer. A contact portion is connected to and extended from a portion of the drain electrode opposed to the source electrode and has an exposed side surface. A passivation layer is formed on the active layer in such a manner to cover the source and drain electrodes, but to expose the side surface of the contact portion. A pixel electrode is formed on the gate insulating film in such a manner to contact the exposed side surface of the contact portion.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: January 21, 2003
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Dong Yeung Kwak, Soon Sung Yoo, Yu Ho Jung, Hu Sung Kim, Dug Jin Park, Yong Wan Kim, Woo Chae Lee, Byung Chul Ahn
  • Patent number: 6448579
    Abstract: The present invention discloses a TFT array substrate (and method for making the same) having the large storage capacitance for use in a liquid crystal display device. In a four-mask process, the conventional storage capacitor of the TFT array substrate includes the capacitor electrodes and the insulation layer and semiconductor layer as a dielectric layer. However, the present invention includes the capacitor electrodes and the insulation layer as a dielectric layer so that the thickness of the dielectric layer becomes thinner. Therefore, much more electric charges can be stored in the storage capacitor. That means the liquid crystal display device can have a high picture quality and a high definition. Moreover, the present invention has a structure that can achieve the high manufacturing yield.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 10, 2002
    Assignee: L.G.Philips LCD Co., Ltd.
    Inventors: Byoung-Ho Lim, Yong-Wan Kim
  • Publication number: 20020093016
    Abstract: The present invention discloses a TFT array substrate (and method for making the same) having the large storage capacitance for use in a liquid crystal display device. In a four-mask process, the conventional storage capacitor of the TFT array substrate includes the capacitor electrodes and the insulation layer and semiconductor layer as a dielectric layer. However, the present invention includes the capacitor electrodes and the insulation layer as a dielectric layer so that the thickness of the dielectric layer becomes thinner. Therefore, much more electric charges can be stored in the storage capacitor. That means the liquid crystal display device can have a high picture quality and a high definition. Moreover, the present invention has a structure that can achieve the high manufacturing yield.
    Type: Application
    Filed: December 6, 2000
    Publication date: July 18, 2002
    Inventors: Byoung-Ho Lim, Yong-Wan Kim
  • Publication number: 20020085161
    Abstract: 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: Application
    Filed: June 29, 2001
    Publication date: July 4, 2002
    Inventors: Soon Sung Yoo, Dong Yeung Kwak, Yu Ho Jung, Yong Wan Kim, Woo Chae Lee, Dug Jin Park, Hoo Sung Kim
  • Publication number: 20020086219
    Abstract: A photo mask for patterning a lightning rod includes a shorting bar pattern and a plurality of pad patterns, an outer lightning rod pattern connected to the shorting bar pattern, an inner lightning rod pattern connected to the pad pattern, projections from each of the outer and inner lightning rod patterns, and a fine pattern in a “” shape connected between the projections, or a redundancy fine pattern connected between the pad patterns, or a plurality of the lightning rod patterns connected in series, thereby protecting the photo mask for patterning a lightning rod from damage from static electricity, and permitting patterning of an accurate lightning rod.
    Type: Application
    Filed: June 29, 2001
    Publication date: July 4, 2002
    Inventors: Soon Sung Yoo, Seong Su Lee, Dong Yeung Kwak, Yong Wan Kim
  • Patent number: 6391499
    Abstract: The present invention discloses a light exposure mask which comprises a substrate including: a light transmitting region for transmitting incident light perfectly; a light shielding region for shielding the incident light perfectly; and a light semi-transmitting region for transmitting part of the incident light. And the method for manufacturing the mask is also disclosed using depositing and patterning processes. The inventive mask can improve a step coverage and reduce a process time for forming a dual-layered layer.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: May 21, 2002
    Assignee: LG Philips LCD Co., Ltd.
    Inventors: Yong-Wan Kim, Jong-Woo Kim
  • Publication number: 20020047948
    Abstract: A liquid crystal display device includes a substrate, a thin film transistor disposed on the substrate, the thin film transistor including a gate electrode, a source electrode and a drain electrode, a gate line arranged in a first direction on the substrate, the gate line connected with the gate electrode of the thin film transistor, a gate insulation layer disposed on the substrate and covering the gate line and the gate electrode of the thin film transistor, an intrinsic semiconductor layer disposed on the gate insulation layer, an extrinsic semiconductor layer disposed on the intrinsic semiconductor layer, a data line arranged in a second direction substantially perpendicular to the first direction disposed on the extrinsic semiconductor layer, the data line connected to the source electrode of the thin film transistor, first and second dummy metal layers formed over the gate line and arranged on opposite sides of the data line, a passivation layer covering the data line, the source electrode, the drain el
    Type: Application
    Filed: July 31, 2001
    Publication date: April 25, 2002
    Inventors: Soon-Sung Yoo, Dong-Yeung Kwak, Hu-Sung Kim, Yu-Ho Jung, Yong-Wan Kim, Duk-Jin Park, Woo-Chae Lee
  • Publication number: 20020044250
    Abstract: 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: Application
    Filed: June 29, 2001
    Publication date: April 18, 2002
    Inventors: Soon Sung Yoo, Dong Yeung Kwak, Hu Sung Kim, Yong Wan Kim, Dung Jin Park, Yu Ho Jung, Woo Chae Lee
  • Publication number: 20020027622
    Abstract: 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: Application
    Filed: November 14, 2001
    Publication date: March 7, 2002
    Inventors: Soon-Sung Yoo, Dong-Yeung Kwak, Hu-Sung Kim, Yu-Ho Jung, Yong-Wan Kim, Duk-Jin Park, Woo-Chae Lee
  • Publication number: 20020020838
    Abstract: The present invention discloses an array substrate for an active-matrix LCD device and a method of fabricating the same. The array substrate reduces the number of masks typically used in the fabrication process so that reliability is enhanced and the cost is reduced over the conventional device and method. Electric shorts caused by hillocks can be prevented or reduced by incorporating short-preventing sections between the gate line and an overlapping pixel electrode.
    Type: Application
    Filed: December 12, 2000
    Publication date: February 21, 2002
    Inventors: Soon-Sung Yoo, Yong-Wan Kim, Yu-Ho Jung, Woo-Chae Lee