Patents Examined by Robert H. Kims
  • Patent number: 6833893
    Abstract: An OCB (optically compensated bend)-type liquid crystal display device is provided, which possesses high serviceability by suppressing disturbances of the liquid crystal molecules due to nearby electric fields or irregularities of the orientation surface.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: December 21, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Hironori Kikkawa
  • Patent number: 6833892
    Abstract: The invention provides a liquid crystal display device that is excellent in presenting a bright and visible display in a wide viewing angle. A transflective layer formed of cholesteric liquid crystal layers, each having a plurality of unflat portions, and reflecting at least a portion of elliptically polarized light having a predetermined rotation direction, is arranged on the inner surface of a lower substrate. An upper-substrate side elliptically-polarized-light input device is arranged to allow elliptically polarized light to enter a liquid crystal layer from an upper substrate. The liquid crystal layer reverses the component of the elliptically polarized light which is incident during one of electric field applied state and electric field non-applied state, while not changing the component of the elliptically polarized light during the other of the electric field applied state and the electric field non-applied state.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: December 21, 2004
    Assignee: Seiko Epson Corporation
    Inventor: Kimitaka Kamijo
  • Patent number: 6831726
    Abstract: In a liquid crystal display panel, by adhering the TFT substrate 1 to the color filter (CF) substrate 2 such that the repeating direction of thickness distribution or irregularity distribution of the TFT substrate 1 becomes orthogonal to the repeating direction of thickness distribution or irregularity distribution of the CF substrate 2, a distance between a point at which the thick portion of the TFT substrate 1 overlaps on the thick portion of the CF substrate 2 and a point at which the thin portion of the TFT substrate 1 and the thin portion of the CF substrate 2 are overlapped becomes larger than that in a case where the substrates are adhered each other with the repeating directions thereof being trued up. Therefore, the factor defective of the liquid crystal display panel caused by the overlapping of the thick portions and the overlapping of the thin portions of the substrates, that is, the factor defective of the liquid crystal display panel caused by variation of display, can be reduced.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: December 14, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Yoshinori Aoyagi, Yuji Tanaka, Hironori Shiba
  • Patent number: 6831719
    Abstract: Disclosed is a transmissive and reflective type LCD. In the LCD, a second substrate faces a first substrate. A liquid crystal layer is formed between the first substrate and the second substrate. A first polarizing plate is formed on an outer surface of the first substrate. A second polarizing plate is formed on an outer surface of the second substrate. A backlight is arranged for irradiating incident light onto the polarizing plate. A transparent transflective film is arranged between the first polarizing plate and the backlight for partially reflecting and partially transmitting the incident light. The transparent transflective film includes at least a first layer and a second layer, the first and second layers having different refractivity indexes from each other and are alternatively stacked.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 14, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Kyu Jang, Hyung-Guel Kim
  • Patent number: 6831722
    Abstract: An optical compensation film for liquid crystal displays comprises first and second optically anisotropic layers containing positively birefringent material disposed on a substrate, wherein the optic axis, thickness, and retardation of these layers are within prescribed limitations.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: December 14, 2004
    Assignee: Eastman Kodak Company
    Inventors: Tomohiro Ishikawa, Xiang-Dong Mi
  • Patent number: 6829032
    Abstract: An apparatus for manufacturing a liquid crystal display includes a unitary vacuum processing chamber having a substrate entrance, a loader part to load first and second substrates through the substrate entrance, one of the first and second substrates having a liquid crystal material disposed thereupon, upper and lower stages disposed within the vacuum processing chamber for affixing the first and second substrates, a stage moving system for providing relative movement between the upper and lower stages, and a vacuum generating system for evacuating an interior of the vacuum processing chamber.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: December 7, 2004
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Sang Seok Lee, Sang Ho Park
  • Patent number: 6829022
    Abstract: The present invention is related to a chuck on which an array substrate having a plurality of cells for an IPS-LCD device is located for a light exposure process. The chuck of the present invention includes a chuck frame having a rectangular shape corresponding to a substrate; first and second lift pin holes that face to each other with respect to a horizontal center line of the chuck frame; third and fourth lift pin holes that face to each other with respect to a vertical center line of the chuck frame; and lift pins in each lift pin hole. Therefore, light reflected by the lift pin holes during the light exposure process does not affect a photo-resist formed over the substrate.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: December 7, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Yong Hun Kim
  • Patent number: 6829020
    Abstract: Disclosed herein is a recording method for recording an image on a thermosensible image bearing medium that contains liquid crystal material. The liquid crystal exhibits a cholesteric phase at a temperature range higher than a room temperature so as to reflect selected wavelength of light based on heated temperature within the temperature range. Since the cholesteric liquid crystal material has a different response time for each selective reflection wavelength, an optimum energy application time is required for obtaining a desired recording color. Accordingly, in the recording method, it is getting higher the heating temperature, shorter the application time. The application time can be adjusted by the pulse width and/or pulse number of the applied energy.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: December 7, 2004
    Assignee: Minolta Co., Ltd.
    Inventors: Shoji Kotani, Hideaki Ueda
  • Patent number: 6826331
    Abstract: A method of assembly is presented for a multi-wavelength optical monitor (MWOM) for use in fibre optic telecommunication networks. The method allows coarse optimisation to be used to align an input optical fibre and detector array relative to a wavelength division demultiplexing element. The detector array output data are transformed with a digital signal processor into relative intensities of the components of the spectrum or spectral parameters of telecommunication channels.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: November 30, 2004
    Assignee: Bookham Technology plc
    Inventors: Andrzej Barwicz, Roman Z. Morawski, Mohamed Ben Slima, Andrzej Miekina, Michal Wisniewski
  • Patent number: 6825889
    Abstract: In a liquid crystal device and a projection display device using the liquid crystal device as a light valve, for the purpose of preventing light incident from opposite the clear viewing direction from affecting the display, in a liquid crystal device (1), an optical center position (411) of a microlens (41) formed on a counter substrate (30) is offset toward the clear viewing direction as viewed from a center position (211) of a first opening area (21) formed for each pixel on the side of an active matrix substrate (20). For this reason, light incident on the counter substrate (30) from the direction inclined in the clear viewing direction is emitted from the active matrix substrate (20); however, light incident from the direction inclined opposite to the clear viewing direction that causes the degradation of contrast is not emitted from the active matrix substrate (20) and does not affect the display.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: November 30, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Hiromi Saito, Ken Inoue
  • Patent number: 6825906
    Abstract: A multi-domain liquid crystal display device comprises first, and second substrates facing each other and a liquid crystal layer between the first and second substrates. A plurality of gate bus lines are arranged in a first direction on the first substrate and a plurality of data bus lines are arranged in a second direction on the first substrate to define a pixel region. A pixel electrode electrically is charged through the data bus line in the pixel region, a color filter layer is formed on the second substrate, and a common electrode is formed on the color filter layer. Dielectric frames are formed in the pixel region, and an alignment layer on at least one substrate between the first and second substrates.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 30, 2004
    Assignee: LG.Philips LCD Co., Inc.
    Inventors: Kyeong Jin Kim, Jang Jin Yoo, Sung Joon Bae
  • Patent number: 6825910
    Abstract: First, a plurality of liquid crystal display panels having filling ports for filling liquid crystal are arranged. Next, a ultraviolet ray curing sealing agent in a wet state is transferred to each of the filling ports by a transfer roller in a lump. Then, an ultraviolet ray is irradiated to the ultraviolet ray curing sealing agent.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: November 30, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Eiichirou Aoki, Tsutomu Uemura
  • Patent number: 6822714
    Abstract: An ultraviolet light responsive type liquid crystal alignment films are formed on opposing surfaces of a pair of transparent substrates constituting a liquid crystal cell. Next, the liquid crystal alignment films on the transparent substrates parallel to a reference plane are irradiated by a polarized ultraviolet ray dividedly by the pixel or by the dot so as to regulate an alignment direction of the liquid crystal. Furthermore, the transparent substrate that has been irradiated by the polarized ultraviolet at the previous step is irradiated by the polarized ultraviolet ray dividedly by the pixel or by the dot for developing a pre-tilt angle after rotating the transparent substrate on the reference plane so that the transparent substrate turns to a direction different from its direction at the previous step.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: November 23, 2004
    Assignee: Sony Corporation
    Inventor: Yoshimasa Saito
  • Patent number: 6822716
    Abstract: An in-plane switching liquid crystal display with an alignment free structure. In each pixel area, at least one floating metal layer is disposed between two common electrodes and patterned on the same plane with the common electrodes, and at least one pixel electrode is disposed between the two common electrodes and covers the floating metal layer. The center of the pixel electrode is aligned to the center of the floating metal layer, and each interval between two adjacent common electrode and pixel electrode is fixed at a constant.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: November 23, 2004
    Assignee: Hannstar Display Corp.
    Inventors: Deuk Su Lee, Tean-Sen Jen
  • Patent number: 6819393
    Abstract: An optical device and a display apparatus of the present invention are constructed so as to improve display characteristics of output light intensity, display contrast, and reduction of scattered light due to external light, and also to provide a large-screen. The optical device has a first stacked body and a plurality of second stacked bodies. The first stacked body includes a light guide, a first electrode, and an optical control layer. The second stacked body includes a plurality of second electrodes, the reflection film and a substrate. At least one of said first electrode and said second electrode has a periodic structure for inducing a fine periodic structure for light diffraction in said optical control layer.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: November 16, 2004
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Munekazu Date, Shiro Suyama, Kinya Kato, Kazutake Uehira
  • Patent number: 6819834
    Abstract: The invention provides a method and apparatus that precisely and efficiently improves the optical properties of an optical fiber grating. Preferably hydrogen loading processing, grating formation processing that forms a grating part by irradiation with ultraviolet light at a predetermined period, and preferably dehydrogenation, adjusting the optical properties by a suitable combination of uniform ultraviolet irradiation processing that irradiates the grating part as a whole with ultraviolet light and heat trimming processing, and finally heat aging is carried out.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: November 16, 2004
    Assignee: Fujikura Ltd.
    Inventors: Yuu Ishii, Michihiro Nakai, Satoshi Okude, Kenji Nishide, Kensuke Shima
  • Patent number: 6816213
    Abstract: The present invention provides a mounting structure for mounting a liquid crystal module to a cover of a mobile terminal. The mounting structure comprises: at least a pair of first and second engagement parts, wherein the first engagement part is provided on a side portion of the liquid crystal module, while the second engagement part is provided on a side portion of a structural member of the cover, so that the paired first and second engagement parts are engaged with each other only by fitting the liquid crystal module into the structural member of the cover.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: November 9, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Kasuhiro Kato, Masatake Baba, Michiaki Nishiyama, Fumihiko Fujishiro, Takakazu Yano, Toshihisa Ogawa, Tomoo Miwa, Yasuhiro Sato
  • Patent number: 6816573
    Abstract: The voltage applied to a first grid electrode 71 of an X-ray tube 11 by a grid voltage control section 110 is controlled with reference to a predetermined negative voltage from a negative voltage generating section 112 when an object 5 to be inspected does not exist in an imaging area (irradiation area of an X-ray from an X-ray source 1) so that the pulse outputted from a pulse generator 105 is in its OFF state, and is controlled with reference to a reference positive voltage from a reference voltage generating section 115 when the object 5 to be inspected exists in the imaging area in the X-ray image intensifier 2 (irradiation area of the X-ray from the X-ray source 1) so that the pulse outputted from the pulse generator 105 is in its ON state, whereby both of the cutoff voltage and grid operating voltage are applied in a stable state.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: November 9, 2004
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Masayuki Hirano, Hiroki Kawakami
  • Patent number: 6814502
    Abstract: Rotate-and-pull mechanisms for fiber optic modules. The rotate-and-pull mechanisms have a lever-actuator to unlatch and withdraw a fiber optic module from a cage assembly or a module receptacle. The lever-actuator pivotally couples to the fiber optic module so that when lever-actuator is rotated about its pivot point, the lever-actuator causes the second actuator to release the fiber optic module from the cage assembly. The lever-actuator includes an actuating-tab to cause the second actuator to move when the lever-actuator is rotated. By pulling the lever-actuator away from the cage assembly, the fiber optic module is withdrawn from the cage assembly. A belly-to-belly mounting configuration is introduced for the rotate-and-pull release fiber optic modules.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: November 9, 2004
    Assignee: JDS Uniphase Corporation
    Inventors: Liew C. Chiu, Ron C. Pang, Yong P. Sim, Kee S. Tan, Tat T. Ming
  • Patent number: 6816215
    Abstract: An uncured cholesteric liquid crystal layer 18 having a cholesteric order, including nematic liquid crystal, a chiral agent and a photopolymerization initiator is formed on an alignment film 16 on a glass substrate 12. This uncured cholesteric liquid crystal layer 18 is cured by applying to it ultraviolet light with a low intensity under such conditions that one surface of the uncured cholesteric liquid crystal layer is brought into close contact with the alignment film 16 on the glass substrate 12 so that it will not come into contact with oxygen and that the other surface of the same is exposed to air.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: November 9, 2004
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Masanori Umeya