Patents Assigned to Display Technologies, Inc.
  • Patent number: 6500702
    Abstract: 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 thro
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: December 31, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Deuk Su Lee, Jung Mok Jun
  • Patent number: 6497347
    Abstract: A hanger having a novel construction including an engagement member, a foldable body portion having an upper end with a pair of continuous locking openings, and a lower or tail end with a two prong locking member which engages the locking openings in a secured or closed position is disclosed. In one embodiment, the prongs of the locking member include a tapered head having a locking projection that engages a rear planar surface of the body portion, between the locking openings, in order to discourage removal of the locking member from the locking openings in use. The combination of these features allows the belt hanger to be readily assembled, tamper resistant after assembly, and aesthetically pleasing.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: December 24, 2002
    Assignee: Display Technologies, Inc.
    Inventors: Jeffrey A. Feibelman, David W. Brown
  • Patent number: 6486935
    Abstract: 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: Grant
    Filed: June 25, 1999
    Date of Patent: November 26, 2002
    Assignee: 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
  • Patent number: 6486934
    Abstract: 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: Grant
    Filed: December 15, 2000
    Date of Patent: November 26, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Suk Shin Yun, Seong Yik Park, Young Tae Kwon
  • Patent number: 6485997
    Abstract: The present invention discloses a method for manufacturing a fringe field switching mode liquid crystal display device.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: November 26, 2002
    Assignee: Hyundai Display Technology, Inc.
    Inventors: Kyung Ha Lee, Sung Hyun Cho
  • Patent number: 6483490
    Abstract: A method for providing the sustaining waveform to a selected discharge cell of a plasma display panel (PDP) is provided. First, a first pulse of a first voltage falls to a reference voltage is applied between sustain electrodes X and Y. Second, the voltage between electrodes X and Y remains at the reference voltage for a first period. Finally, a second pulse of a second voltage remains at the second voltage for a second period, and falls to the reference voltage is applied between sustain electrodes X and Y. The apparatus for providing the sustaining waveform to a selected discharge cell of a plasma display panel (PDP) includes a first energy recovery circuit, a second energy recovery circuit, a first capacitor and a first bi-directional switch, and a second capacitor and a second bi-directional switch. The first energy recovery circuit, which includes a first inductor and four switches, is connected to the first sustain electrode.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: November 19, 2002
    Assignee: Acer Display Technology, Inc.
    Inventor: Shin-Tai Lo
  • Patent number: 6479933
    Abstract: A PDP has a front and back substrates with a space between them. Barrier ribs in the space define discharge space groups. Each group has first, second and third discharge spaces. Each discharge space has an upper and a lower opening. Air-locking ribs seal the lower opening of the first discharge space, the upper opening and lower openings of the second discharge space, and the upper opening of the third discharge space. A first wall and the adjacent air-locking ribs defines a first channel which is accessible through each of the upper openings of the first discharge spaces. A second wall and the adjacent air-locking ribs defines a second channel which is accessible through each of the lower openings of the third discharge spaces. First, second and third gases respectively fill the first, second and third discharge spaces to emit different colored light.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: November 12, 2002
    Assignee: Acer Display Technology, Inc.
    Inventor: Po-Cheng Chen
  • Patent number: 6480252
    Abstract: 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: Grant
    Filed: June 29, 2000
    Date of Patent: November 12, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Kyung Ha Lee, Seung Moo Rim, Do Hyun Choi
  • Patent number: 6476900
    Abstract: 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: Grant
    Filed: November 24, 1998
    Date of Patent: November 5, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Seung Hee Lee, In Cheol Park, Hyang Yul Kim, Yun Hee Lee
  • Patent number: 6471053
    Abstract: A combination display and storage device including a foldable display card having an outer surface and an inner surface, a removable support member constructed and arranged to display an item on the outer surface of the card, and a storage member supported within an interior section of the card member is disclosed. In an assembled position, the card is foldable about a median area, and the tail end is engaged with the upper end in order to form an interior section for receiving the removable storage member, such as a pouch. The display and storage device can be utilized to both display a product, such as an article of jewelry, on the outer surface to a consumer and can also thereafter be used to store the product in a convenient manner.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 29, 2002
    Assignee: Display Technologies, Inc.
    Inventor: Jeffrey A. Feibelman
  • Patent number: 6473145
    Abstract: The present invention discloses a reflective plate having lightweight functioning as a substrate and a reflective LCD using the same.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: October 29, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hwan Soo Shim, Dong Hae Seo, Jae Jin Lee, Sang Un Choi
  • Patent number: 6469762
    Abstract: 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: Grant
    Filed: June 29, 2000
    Date of Patent: October 22, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Seung Ho Hong, Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6469764
    Abstract: 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 thereb
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: October 22, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6466290
    Abstract: 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: Grant
    Filed: November 29, 2000
    Date of Patent: October 15, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6466287
    Abstract: 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: Grant
    Filed: June 28, 2000
    Date of Patent: October 15, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hwan Su Shim, Dong Hae Seo, Sang Un Choi
  • Patent number: 6462800
    Abstract: 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: Grant
    Filed: June 29, 2000
    Date of Patent: October 8, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, In Cheol Park, Seung Hee Lee
  • Patent number: 6462801
    Abstract: 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: Grant
    Filed: May 8, 2001
    Date of Patent: October 8, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Jae Hak Shin, Gyo Un Choi
  • Patent number: 6456351
    Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: September 24, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6452658
    Abstract: Disclosed is a reflective liquid crystal display having high transmittance and a method for manufacturing the same.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: September 17, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: In Cheol Park, Seung Hee Lee, Won Geon Lee
  • Patent number: 6449027
    Abstract: Disclosed is an in plane switching (IPS) mode LCD device and method for manufacturing the same.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: September 10, 2002
    Assignee: Hyundai Display Technology Inc.
    Inventors: Kyung Ha Lee, Jeong Geun Kim, Seung Yik Park