Patents Assigned to Fujitsu Display Technologies
  • Publication number: 20030112384
    Abstract: A substrate for a liquid crystal display device and a liquid crystal display device equipped therewith, produced at decreased costs and offering a display of good quality. A substrate for a liquid crystal display device comprises a TFT substrate for holding opposing substrates arranged being opposed to each other as well as a liquid crystal composition obtained by mixing a monomer into liquid crystals, a plurality of bus lines and formed on the TFT substrate in a manner of intersecting each other through an insulating film, thin-film transistors formed close to positions where the plurality of bus lines and intersect each other, a plurality of thin-film transistors for polymerization formed for applying a voltage to the pixel electrodes at the time of polymerizing the monomer, and a first common electrode wiring for polymerization electrically connected to the gate electrodes of the plurality of thin-film transistors for polymerization.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 19, 2003
    Applicant: Fujitsu Display Technologies Corporation
    Inventors: Yoshinori Tanaka, Yoji Taniguchi, Yoji Nagase, Tomoyuki Miyata
  • Patent number: 6573964
    Abstract: A pair of substrates is disposed in parallel at a gap distance therebetween. Liquid crystal material containing liquid crystal molecules having negative dielectric anisotropy is filled in between the substrates. The liquid crystal molecules are homeotropically aligned. On the opposing surface of one of the substrates, pixel electrodes are disposed in a matrix form and data bus lines and gate bus lines are disposed. The gate bus line passes an inner area of each pixel electrode. Switching elements are formed on the opposing surface of the substrate. Each switching element is controlled by the gate bus line at another row. Protrusions are formed on the opposing surface of one of the substrates. The protrusions divide an area of the pixel electrode into a plurality of areas and each is bent on the gate bus line. A domain border regulating unit is formed on the opposing surface of the other of the substrates. The protrusions and domain border regulating unit define the borders of each domain.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: June 3, 2003
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hideaki Takizawa, Satoru Kawai, Tsuyoshi Kamada
  • Patent number: 6552766
    Abstract: A reflection liquid crystal display device includes: a liquid crystal layer; a transparent insulating layer provided in an optical path of a light incident on the liquid crystal layer, the transparent insulating layer having a refractive index substantially equal to one of refractive indexes for ordinary ray and for extraordinary ray of the liquid crystal layer; a reflector for reflecting the light passing through the liquid crystal layer and the transparent insulating layer; and first and second substrates provided on first and second sides of an optical member so as to oppose each other, the optical member being formed of the liquid crystal layer, the transparent insulating layer, and the reflector, wherein an interface formed between the liquid crystal layer and the transparent insulating layer has a plurality of slant parts of substantially the same shape, the slant parts each having a predetermined inclination with respect to the reflector.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: April 22, 2003
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Kazutaka Hanaoka, Yuichi Inoue
  • Patent number: 6549250
    Abstract: In the semiconductor integrated circuit, an auxiliary conductor is formed in a wiring layer beneath a signal wire which connects a position Vin estimated to generate static electricity and a position Vout to be protected from static electricity. The capacitance of a glass substrate can be reduced to {fraction (1/1000)} of the capacitance of the interlayer insulating film. Accordingly, even if a voltage of 1000 to 2000 V is generated between a substrate conveying system and the auxiliary conductor, the glass substrate works as a dielectric, and the voltage generated between the auxiliary conductor and signal wire is only several volts.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: April 15, 2003
    Assignee: Fujitsu Display Technologies Corporation
    Inventor: Keizo Morita
  • Patent number: 6547616
    Abstract: An image display panel is prepared which has in an in-plane thereof an image display area for displaying an image and a framing area surrounding the image display area. Light shielding ink is supplied from an ink supply source to at least a partial surface area of the framing area of the image display panel. In this case, the ink supply source is made not in contact with the image display panel. Even if the frame structure of an image display device such as a liquid crystal display is made narrow, the image quality in a peripheral area of the image display area becomes hard to be lowered.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: April 15, 2003
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Noriaki Furukawa, Taiji Yuhara, Toshiro Katsube, Satoru Imai, Tsukasa Adachi
  • Publication number: 20030058374
    Abstract: Fine electrode patterns pattern-formed in the shape of fine teeth of a comb bilaterally symmetrical with respect to band-shaped portions are formed at even intervals in a pixel electrode, and band-shaped dielectric layers are pattern-formed at even intervals to cover the fine electrode patterns in a display pixel. By the existence of the dielectric layer and the fine electrode pattern complementing this, a portion formed with these layer and fine electrode pattern is a high threshold voltage region, and relatively, a low threshold voltage region where the dielectric layer does not exist is formed. By the aforementioned construction, it becomes possible to improve a delay in response speed at low gray levels and increase the speed of halftone response, whereby a very reliable image display having moving image performance almost equal to that of a CRT is realized.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 27, 2003
    Applicant: Fujitsu Display Technologies Corporation
    Inventors: Arihiro Takeda, Shingo Kataoka, Kimiaki Nakamura, Hideaki Tsuda, Takahiro Sasaki, Kazuya Ueda, Masahiro Ikeda, Katsunori Misaki, Naoto Kondo, Akira Komorita
  • Patent number: 6538708
    Abstract: A liquid crystal display includes a pixel cell array formed on a substrate. The pixel cell array includes rows and columns of pixel cells and each pixel cell has a pixel TFT. Gate control lines extend along the respective rows of the pixel cell array and connect the pixel TFTs to a gate control circuit. A termination unit is located near one end of the gate control lines. The termination unit is made up of antenna TFTs, respectively connected to the gate control lines. The antenna TFTs have a size which is much larger than a size of the pixel TFTs and are preferably CMOS type TFTs. The termination unit discharges a static charge which may build up on the gate control lines so that damage to the pixel TFTs caused by the static charge is prevented.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: March 25, 2003
    Assignee: Fujitsu Display Technologies Corporation
    Inventor: Hongyong Zhang
  • Patent number: 6525797
    Abstract: A first electrode and a second electrode for defining pixels are formed on the opposed surfaces of a first substrate and a second substrate, respectively. A first projecting pattern is formed on the surface of the first electrode. A domain boundary control means is formed on the opposite surface of the second substrate. The first electrode and the first projecting pattern are covered by a first alignment film. The second electrode and the domain boundary control means are covered by a second alignment film. The first and second alignment films differ from each other in at least one of such characteristics as the film thickness, material and surface activity. After an ac voltage has been applied between the first and second electrodes, a dc voltage remaining between the first and second alignment films is lower than a dc voltage that would remain if such characteristics were equal.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: February 25, 2003
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hideaki Tsuda, Yoshio Koike, Hideo Chida, Shingo Kataoka