Patents Examined by P. R. Akkapeddi
  • Patent number: 6917401
    Abstract: Liquid crystal display (LCD) structures and methods for forming the same. The black matrix and the color filter layer of the LCD are moved from color filter substrate to TFT substrate to form a color filter on TFT (COT) structure. Besides, the spacers are composed of photoresist or color photoresist can be located on portions of areas covered by the black matrix to maximize the aperture ratio.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 12, 2005
    Assignee: Allied Material Technology Corp.
    Inventors: Dong-Yuan Goang, Chich-Jung Wu, Dou-I Chen
  • Patent number: 6912035
    Abstract: An interconnecting structure and a pixel structure suited to large-sized screens are formed. A counter line/electrode is formed on a TFT substrate, and the counter line/electrode is made of a stacked structure film in which a layer made of aluminum or an alloy essentially containing aluminum is covered with a high-melting point metal film, and a transparent conductive film which covers the stacked structure film.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: June 28, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Toshiki Kaneko, Kazumi Fujii, Kikuo Ono
  • Patent number: 6894733
    Abstract: A liquid crystal display apparatus which has: a liquid crystal display which has chiral nematic liquid crystal between a pair of substrates with electrodes thereon and which makes a display by use of selective reflection of the liquid crystal; and a driving circuit for driving the liquid crystal by applying voltages to the electrodes. When an electric field of a specified strength is applied to the chiral nematic liquid crystal, the liquid crystal changes the direction of the helical axis without untwisting. By using this characteristic, the direction of the helical axis of the liquid crystal is changed by changing the direction of the electric field applied thereto, and thereby, the liquid crystal is set to a planar state or a focal-conic state. In this way, writing on the liquid crystal is carried out.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: May 17, 2005
    Assignee: Minolta Co., Ltd.
    Inventors: Tomoo Izumi, Mitsuyoshi Miyai
  • Patent number: 6894745
    Abstract: Each pixel region includes a transmission region for display in a transmission mode using light entering through a first substrate and a reflection region for display in a reflection mode using light entering through a second substrate. The first substrate includes a transparent electrode region and a reflection electrode region, both of which have flat surfaces facing a liquid crystal layer. The second substrate includes a transparent electrode in the reflection region and the transmission region on its surface facing the liquid crystal layer and includes a light diffusion layer in the reflection region, and the surface facing the liquid crystal layer is flat in the transmission region and the reflection region.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: May 17, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Koichi Fujimori, Masumi Kubo, Yozo Narutaki
  • Patent number: 6894736
    Abstract: A transistor substrate for a liquid crystal display comprises an array of insulated-gate staggered TFTs and a capacitor (36) associated with each transistor. The gate insulator (400,420) comprises a first inorganic layer (400) and a second, polymer or spin-on glass layer (420), of which layers only the polymer or spin-on glass layer (420) extends to the capacitor (36) to define the capacitor dielectric.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: May 17, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Stephen J. Battersby, Steven C. Deane
  • Patent number: 6888611
    Abstract: In a liquid-crystal display element each individual liquid-crystal injection area is surrounded by a seal, and the overall liquid-crystal injection area is surrounded by an array substrate and an opposing substrate surrounded by an outer peripheral seal having an aperture and are adhered together, the aperture of the outer peripheral seal being sealed by a hole sealant, and the surface of at least one of the array substrate and the opposing substrate being polished with a polishing material, which is then removed, after which cutting along the aperture is done to separate the individual liquid-crystal injection areas, thereby facilitating the achievement of a thin liquid-crystal display element, while improving the quality and yield thereof.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: May 3, 2005
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Hirofumi Kamosawa, Takeya Shimizu
  • Patent number: 6888595
    Abstract: A reflector has a transparent film, an adhesive layer disposed on one surface of the transparent film, a groove structure provided on the other surface of the transparent film, the groove structure having a plurality of grooves including optical path changing slopes aligned in a substantially constant direction at an inclination angle in a range of from 35 to 48 degrees with respect to a plane of the transparent film, a transparent cover film formed so as to cover an outer surface of the groove structure, and a light diffusing type reflection layer disposed on an outer surface of the cover film. A lighting-external light double mode liquid-crystal display device comprising the above reflector and a transmission type liquid-crystal panel, wherein the reflector is bonded to aback side (opposite to a viewing side) of the transmission type liquid-crystal panel through the adhesive layer of the reflector.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: May 3, 2005
    Assignee: Nitto Denko Corporation
    Inventor: Seiji Umemoto
  • Patent number: 6885426
    Abstract: In the manufacturing step of performing thermal compression bonding with respect to a driving integrated circuit and a glass substrate included in a liquid crystal panel so as to connect an electrode of the driving integrated circuit and an electrode of the glass substrate by using an anisotropic conductive adhesive in which conductive particles are diffused in an insulative adhesive, the anisotropic conductive adhesive includes conductive particles, a resin a whose average molecular weight is in a range of from 10000 to 100000, a resin b whose average molecular weight is of not more than 1000, a stress relaxation resin, and a curing agent; and a Young's modulus of the anisotropic conductive adhesive after curing is in a range of from 1.4 Gpa to 1.6 Gpa.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: April 26, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Matsui, Motoji Shiota, Kiyoshi Inada
  • Patent number: 6876425
    Abstract: A liquid crystal display device having first and second substrates with an interposed liquid crystal layer that has a negative or a positive dielectric anisotropy. First and second electrodes are formed on opposing surfaces of the first and second substrates. A first orientation film comprised of a ferroelectric liquid crystal polymer is formed on the first electrode, and a second orientation film is formed on the second electrode. First and second polarizers are formed on exterior surfaces of the first and second substrates.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: April 5, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jang-Jin Yoo, Suk-Won Choi, Su-Seok Choi
  • Patent number: 6876424
    Abstract: A liquid crystal display in which a liquid crystal, which has a spontaneous polarization of a magnitude of not more than ½ of a maximum quantity of charge that is injected to each pixel when the switching element is turned on, is filled between alignment films formed on respective glass substrates, so as to form a liquid crystal layer thereby to drive the liquid crystal by using a lower applied voltage.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: April 5, 2005
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Yoshihara, Tetsuya Makino, Hironori Shiroto, Yoshinori Kiyota
  • Patent number: 6870593
    Abstract: A liquid crystal display cell includes: a first substrate; a second substrate; a liquid crystal layer interposed between the first and second substrates; and a spacer structure on the second substrate. The spacer structure further includes: at least a first type spacer having a first height; and at least a second type spacer having a second height which is smaller than the first height.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: March 22, 2005
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Hiroki Satoh
  • Patent number: 6867833
    Abstract: The present invention discloses a transflective mode color liquid crystal display, whose white backlight source is composed of several narrowband monochromatic light sources. A color filter for displaying colors is designed to match the wavelength of each of the monochromatic light sources so that the color filter can let a monochromatic light source of one color be transmitted, while selectively absorb the wavelengths of the monochromatic light sources of other colors. The present invention can achieve high color saturation at the backlight mode while maintaining high reflectance.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: March 15, 2005
    Assignee: Giantplus Technology Co., Ltd.
    Inventors: Pin Chang, Alex Lin
  • Patent number: 6867830
    Abstract: A reflection type color liquid crystal display (LCD) device is disclosed that achieves achromatization in black and white as well intermediate scale display. The LCD device includes an active matrix substrate provided with a plurality of pixels each having a switching element and a reflection electrode in a matrix configuration, a liquid crystal layer between the substrate and a glass substrate, a phase plate and a polarization plate. The parameters of the above elements are designed such that projections of Stokes parameter (S1, S2, S3) of light between the phase plate and the liquid crystal layer on an S1-S2 plane constitute a substantially linear line, and that at a reflecting plane of the reflection electrode, the polarization of the light is substantially circularly polarized for a normally black display and substantially linearly polarized for a normally white display over a wide wavelength range.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: March 15, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Shoichi Hirota, Osamu Ito
  • Patent number: 6864928
    Abstract: A method of fabricating a liquid crystal display device includes the steps of forming a gate electrode on a transparent substrate; forming a gate insulating film, an active layer and an ohmic contact layer on the transparent substrate to cover the gate electrode; forming a source electrode and a drain electrode on the ohmic contact layer and patterning the drain electrode to form an L-shaped portion and a plurality of protrusions; forming a protective layer on the source and drain electrodes such that side surfaces of the protective layer, the drain electrode, the ohmic contact layer and the active layer are exposed; and forming a pixel electrode on the protective layer to electrically contact the side surface of the drain electrode.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: March 8, 2005
    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: 6862051
    Abstract: A liquid crystal display, and a method of manufacturing thereof, includes 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 gae 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 and covering the source and dra
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: March 1, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Byung-Chul Ahn, Soon-Sung Yoo, Yong-Wan Kim
  • Patent number: 6856363
    Abstract: An LCD module having a lamp cover with an improved structure, includes a lamp; a lamp cover which is bent once so as to define an upper plate and a side plate thereof, and which covers an upper portion and side portion of the lamp with a lower portion of the lamp being opened, the lamp cover being arranged to reflect a light produced from the lamp; a light guide plate having an upper surface and a side surface thereof corresponding to the upper and side plates of the lamp cover, respectively, the light guide plate being arranged to a side of the lamp cover, the light guide plate receiving a light produced from the lamp through the side surface thereof and transmitting the light toward the upper surface thereof; and a rear reflector plate arranged at a lower surface of the light guide plate and which is extended toward the lower portion of the lamp, the rear reflector plate directing toward the upper surface of the light guide plate a light being leaked through the lower surface of the light guide plate.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: February 15, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jung-Ki Kim
  • Patent number: 6856367
    Abstract: An LCD device is disclosed, which improves color characteristics and gray inversion regardless of a viewing angle. The LCD device includes a first electrode on a first substrate having a plurality of slit patterns, a second electrode on a second substrate, a liquid crystal layer between the first and second substrates, the liquid crystal layer having different alignment directions by each slit pattern, and at least one light-shielding layer below the first electrode.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: February 15, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Jang Jin Yoo, Do Hee Kwon, Hyun Ho Shin
  • Patent number: 6853409
    Abstract: A signal processing circuit board includes a board body, a variable electronic element, and a hole. The variable electronic element is mounted in a mounting side of the board body. The variable electronic element has an operating member to control an output outputted from the variable electronic element in a single side of the variable electronic element. The hole is provided in the board body. The operating member is positioned in the hole such that the operating member points in the other side opposite to the mounting side of the board body.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: February 8, 2005
    Inventor: Yutaka Takeishi
  • Patent number: 6853414
    Abstract: This invention consists of transforming a liquid crystal flat screen, normally designed to operate in transmissive mode, to enable it to operate in reflective mode so as to consume less energy. To do this, some screen elements inserted between the liquid crystal layer (3) and the reflector (9) must satisfy a specific relation.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: February 8, 2005
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Bernard Aspar, Jean-Frédéric Clerc
  • Patent number: 6853408
    Abstract: A CF on TFT type liquid crystal display and a method of manufacturing the same. The liquid crystal display has a plurality of parallel scanning lines, a plurality of parallel data lines which cross the scanning lines, thin film transistors each disposed in the proximity of an intersection between one of the scanning lines and one of the data lines, and pixel electrodes disposed in a matrix and each coupled with one of the thin film transistors. The light shield film is formed over areas including at least the thin film transistors but except over portions which become banks and hinder flow of developer for patterning the light shield film. As an embodiment, the light shield film can be formed along the data lines, and also partially along the scanning lines except a part of each portion of the scanning lines between adjacent data lines.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: February 8, 2005
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Mamoru Okamoto, Michiaki Sakamoto, Masanobu Hidehira