Patents Examined by Tai V. Duong
  • Patent number: 6204896
    Abstract: A display unit comprises a transparent touch switch and a liquid crystal display having a display surface. At least an input area of the transparent touch switch is laminated to the display surface of the liquid crystal display by clear adhesive. The clear adhesive has a permeability after hardening which is close to the permeability of the liquid crystal display and the transparent touch switch. Clear fillers are disposed in the clear adhesive to prevent warping of the transparent touch switch and the liquid crystal display.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: March 20, 2001
    Assignee: Seiko Instruments Inc.
    Inventors: Tsutomu Matsuhira, Kimiko Munemasa
  • Patent number: 6201587
    Abstract: A videocassette has a display portion for displaying recorded contents. The display portion is formed with a display device. The display device has a conductive layer, a PDLC (polymer-dispersed liquid crystal) film, and a protective layer. The display device can repeatedly record and erase visible information.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: March 13, 2001
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Teruo Sakamaki
  • Patent number: 6195142
    Abstract: The invention presents an organic electroluminescence element excellent in long-term durability and reliability, a manufacturing method excellent in mass producibility, and a display device using the organic electroluminescence element. Accordingly, to prevent growth of dark spots in the luminous layer by completely shutting off invasion of moisture or oxygen into an anode or an organic thin film layer, a shield material is adhered to an element by using low melting glass or low melting solder. To fuse the low melting glass or low melting solder used for this purposes, laser or ultrasonic wave is used. The surface of the element is sealed with a protective film in a film thickness of 3 microns to 30 microns, or a protective film composed of two-layer laminate film of insulating compound layer andmetal film. According to these inventions, a highly reliable organic electroluminescence element small in changes in the time course suchas growth of dark sports and lowering of luminance is obtained.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: February 27, 2001
    Assignee: Matsushita Electrical Industrial Company, Ltd.
    Inventors: Akira Gyotoku, Hideaki Iwanaga, Shintaro Hara, Takahiro Komatsu, Kei Sakanoue
  • Patent number: 6195149
    Abstract: A method for producing a liquid crystal panel by forming a plurality of liquid crystal sealing-in areas between a transparent pair of large-area substrates and dividing the liquid crystal sealing-in areas into separate liquid crystal sealing-in areas.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: February 27, 2001
    Assignee: Seiko Epson Corporation
    Inventors: Takumi Kodera, Kozo Gyota, Fumio Obata, Masami Murata
  • Patent number: 6195139
    Abstract: A liquid crystal electro-optical device comprising a pair of substrates at least one of them is light-transmitting, electrodes being provided on said substrates, and an electro-optical modulating layer being supported by said pair of substrates, provided that said electro-optical modulating layer comprises an anti-ferroelectric liquid crystal material or a smectic liquid crystal material which exhibits anti-ferroelectricity, and a transparent material.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: February 27, 2001
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Nishi, Toshimitsu Konuma, Michio Shimizu, Kouji Moriya
  • Patent number: 6188462
    Abstract: The present invention is directed to liquid crystal diffraction gratings with electrically controlled periodicity. An electrical field is applied to liquid crystal device wherein the liquid crystals align to form a diffraction grating. The period of the diffraction grating is varied by changing the applied electrical field. The diffraction grating therefore has a period that can be varied by an electrical field.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: February 13, 2001
    Assignee: Kent State University
    Inventors: Oleg D. Lavrentovich, Darius Subacius
  • Patent number: 6184965
    Abstract: A tape carrier package structure suitable for constituting a display apparatus, includes: a flexible film, a semiconductor device mounted on the film, a first conductor pattern formed on the film and connected to the semiconductor device for inputting signals to and/or outputting signals from the semiconductor device, and a second conductor pattern formed in a region not provided with the first conductor pattern on the film in a state substantially free from signal supply to or from the semiconductor device. The second conductor pattern may be connected to a circuit board for supplying an electric power and control signals to the semiconductor device. The second conductor pattern promotes a heat dissipation from the tape carrier package and the semiconductor device mounted thereon.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: February 6, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Murayama, Atsushi Mizutome
  • Patent number: 6181394
    Abstract: A liquid crystal display (LCD) exhibiting enhanced optical viewing performance. In a preferred embodiment, the LCD comprises a first glass substrate, a second glass substrate and an active matrix liquid crystal display (AMLCD) panel. The LCD also comprises a rear polarizer adhered to the rear of the AMLCD panel with an index-matched, pressure sensitive adhesive (PSA). The LCD further comprises an indium tin oxide coating adapted for use as a heating element, the coating being applied to the front of the second glass substrate. The heating element is also adhered to the rear polarizer with a silicone-based, index-matched, optical bonding material. In addition, the LCD comprises an indium tin oxide coating usable as an electromagnetic interference (EMI) shield, the coating being applied to the rear of the first glass substrate. The EMI shield is also adhered to the front of the AMLCD panel with the above-mentioned silicone-based bonding material.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: January 30, 2001
    Assignee: White Electronic Designs, Corp.
    Inventors: Joseph J. Sanelle, Diggy R. Breiling
  • Patent number: 6177976
    Abstract: An LCD (Liquid Crystal Display) including two substrates sandwiching an LC layer therebetween, and causing a plurality of different kinds of regions to coexist in the LC layer is disclosed. An electrode formed with an aperture is provided on at least one of the substrates. A second electrode is also provided on the same substrate as the above electrode in alignment with the electrode. A voltage higher than a voltage to be applied between the electrode with the aperture and a counter electrode facing it is applied between the second electrode and the counter electrode, thereby controlling the rising direction of LC molecules. The LCD is easy to produce and achieves a great viewing angle. In addition, the LC contains a polymer in order to fix the rising directions of the LC molecules.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: January 23, 2001
    Assignee: NEC Corporation
    Inventors: Hideya Murai, Teruaki Suzuki, Masayoshi Suzuki
  • Patent number: 6175398
    Abstract: The axial symmetric polarizing plate of this example includes at least one portion where light transmission easy axes are arranged with axial symmetry so that light transmission for incident light is equivalent omnidirectionally in one plane, wherein the axial symmetric polarizing plate contains at least a dichroic dye fixed in a polymer matrix formed of a polymerized liquid crystal material.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: January 16, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nobuaki Yamada, Masayuki Okamoto, Shuichi Kozaki
  • Patent number: 6175394
    Abstract: A flat panel display includes a plurality of parallel row select lines and a plurality of column drive lines, with the row select lines and the column drive lines intersecting to define a matrix of pixel locations. Signals are provided to contact pads located on the periphery of the display and the signals flow over the row select lines and the column drive lines to thin film transistors located adjacent a pixel electrode at each of the pixel locations. The signals provided to each thin film transistor cause the transistor to charge a corresponding pixel electrode to control a pixel of the display. ESD protection for the display comprises a guard ring adjacent the contact pads. Capacitively coupled field effect transistors (CCFETs) connect the row select lines to the guard ring and connect the column drive lines to the guard ring. A CCFET is formed as a thin film transistor and typically has a floating gate capacitively coupled to the drain and source of the thin film transistor.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: January 16, 2001
    Inventors: Chung-Cheng Wu, Wen-Jyh Sah
  • Patent number: 6160598
    Abstract: A liquid crystal display device comprises a substrate, a transparent electrode on the substrate, an anodizing layer and a non-anodizing layer on the transparent electrode, and a thin film transistor over the non-anodizing layer. The anodizing layer is a transparent insulating layer and the non-anodizing layer is an opaque metal layer. These layer are formed by anodizing a metal layer, of which a portion is blocked by a photoresist.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: December 12, 2000
    Assignee: LG Electronics Inc.
    Inventor: Ki Hyun Lyu
  • Patent number: 6154260
    Abstract: An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: November 28, 2000
    Assignee: Fujitsu Limited
    Inventors: Takahiro Matsuda, Shin Eguchi, Yoshihiro Mizuno, Masato Nakashima, Manabu Ishimoto, Hirokazu Aritake, Noriko Sato
  • Patent number: 6151085
    Abstract: An electrode plate for a liquid crystal device is constituted by a light-transmissive substrate, a plurality of metal electrodes disposed on the light-transmissive substrate with a spacing therebetween, an insulating layer disposed at the spacing, and a plurality of transparent electrodes disposed on the insulating layer and each electrically connected with an associated metal electrode at a first end portion thereof. The first end portion of the transparent electrode is located closer to the light-transmissive substrate than an adjacent end portion of an adjacent transparent electrode. The electrode plate is effective in providing a liquid crystal device with a wider optical modulation region while improving image qualities.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: November 21, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruo Tomono, Masaru Kamio, Hiroyuki Tokunaga, Yuji Matsuo
  • Patent number: 6147738
    Abstract: In a liquid crystal display device in which a polarizer is adhered to a transparent glass substrate via an adhesive material, electrically conductive particles are dispersed into and held by an acrylic resin, and the ratio by weight of the electrically conductive particles to the acrylic resin is adjusted to fall in the range from 50% to 80%, so that the resistance value of the adhesive material is in the range from 1.times.10.sup.3 to 1.times.10.sup.6 .OMEGA./.quadrature..
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: November 14, 2000
    Assignee: NEC Corporation
    Inventor: Mamoru Okamoto
  • Patent number: 6144429
    Abstract: A liquid crystal display device comprises a reflector made of a high-reflectance material, a light scattering layer formed on the reflector, the light scattering layer containing light scattering particles introduced into a transparent resin, a first transparent electrode formed on the light scattering layer, a transparent substrate opposed to the light scattering layer with a prescribed gap interposed therebetween, a second transparent electrode formed on the transparent substrate and having a portion that is opposed to the first transparent electrode, and a layer of a guest-host type liquid crystal introduced into the gap between the light scattering layer and the transparent substrate and having a portion that is sandwiched between the first and the second transparent electrode.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: November 7, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Nakai, Masahiko Akiyama
  • Patent number: 6144423
    Abstract: A method of mounting a liquid crystal display module thereof which secures an upper sash including the liquid crystal display module to a lower sash in a notebook personal computer. An arm coupled to one end of a fixed rod by a hinge is arranged to be positioned between a side wall of the upper sash and a side wall of the lower sash. A screw goes through from the side wall of the upper sash, via the arm, to the side wall of the liquid crystal display module.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: November 7, 2000
    Assignee: LG LCD, Inc.
    Inventor: Yong Gyu Kim
  • Patent number: 6137557
    Abstract: In the liquid crystal display device of the invention, a liquid crystal layer is formed between a pair of transparent substrates, a plurality of linear electrodes which make a pair are disposed in a spaced, opposed relation on the liquid crystal layer side of one substrate, a switching element for applying a voltage between the paired linear electrodes and thereby applying a lateral electric field to the liquid crystal is disposed in the vicinity of the linear electrodes, one of the linear electrodes is used as a common electrode and the other as a pixel electrode, and at least one of the common electrode and the pixel electrode is formed at least partially in a non-parallel relation to the other to form a narrow spacing between both electrodes.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: October 24, 2000
    Assignee: Frontec Incorporated
    Inventors: Hiroyuki Hebiguchi, Yasuhiko Kasama
  • Patent number: 6133971
    Abstract: A holographically formed reflective display includes first and second substrates, a liquid crystal material located between the first and second substrates and a plurality of anisotropic polymer sheets separating the liquid crystal material into a plurality of liquid crystal material regions. The anisotropic polymer sheets reduce haze in the display and operates in the reverse mode when viewed from various viewing angles. The holographically formed reflective display may be used to form a color liquid crystal display and a color projection system.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Louis D. Silverstein, Thomas G. Fiske, Greg P. Crawford
  • Patent number: 6133978
    Abstract: A tape carrier package comprising a tape carrier, a semiconductor chip, and an anisotropic conductive resin. The tape carrier includes an insulating film having a through-hole, a conductor pattern formed on the insulating film including leads projecting into the through-hole, and inner wiring electrically connected to a part of the conductor pattern. The semiconductor chip are provided in the through-hole and has connecting bumps electrically connected to end portions of the leads. The anisotropic conductive resin are provided so as to cover at least a portion of the semiconductor chip including a junction of the connecting bumps and the end portions of the leads.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: October 17, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Naoyuki Tajima