Patents Assigned to Display Technologies
  • 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
  • Publication number: 20030040595
    Abstract: A process for preparing a conjugated polymer, which comprises polymerizing in a reaction mixture (a) an aromatic monomer having at least two reactive boron derivative groups selected from a boronic acid group, a boronic ester group and a borane group, and an aromatic monomer having at least two reactive halide functional groups; or (b) an aromatic monomer having one reactive halide functional group and one reactive boron derivative group selected from a boronic acid group, a boronic ester group and a borane group, wherein the reaction mixture comprises a catalytic amount of a palladium catalyst, and an organic base in an amount sufficient to convert the reactive boron derivative groups into -B(OH)3- anions.
    Type: Application
    Filed: March 4, 2002
    Publication date: February 27, 2003
    Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Robert Carl Towns , Richard O@$apos;Dell
  • 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
  • Patent number: 6522380
    Abstract: Disclosed is a liquid crystal display comprising: a first substrate and a second substrate, the first substrate being disposed opposite the second substrate and being disposed a first distance apart, each of the substrates having an inner surface and an outer surface opposite the inner surface; a liquid crystal layer sandwiched between the inner surfaces of the substrates, the liquid crystal layer including a plurality of liquid crystal molecules; a first electrode formed on the inner surface of the first substrate, the first electrode having a first width; and a second electrode formed on the inner surface of the first substrate, the second electrode having a second width, and spaced apart from the first electrode by a second distance, the first electrode and the second electrode being capable of aligning the liquid crystal molecules using an electric field produced between the first electrode and the second electrode, wherein the first distance is greater in length than the second distance, and the first an
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: February 18, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Seung Hee Lee, Seok Lyul Lee, Woo Ho Choi, Jung Yeal Lee
  • Patent number: 6518700
    Abstract: An organic light-emitting device comprising a transparent cover sheet; a region of organic light-emitting material behind the cover sheet; a region of circuitry behind the cover sheet for regulating the flow of current to the organic light-emitting material; and a non-light-transmissive layer which lies between the cover sheet and the circuitry.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: February 11, 2003
    Assignees: Cambridge Display Technology Limited, Seiko Epson Corporation
    Inventors: Richard Henry Friend, Karl Pichler, Ichio Yudasaka
  • Publication number: 20030020404
    Abstract: A method of fabricating a plasma display panel and a front plate of the plasma display panel are disclosed. The first step of the method is to provide a front glass substrate having a pixel area and a bonding area. Next, an electrode, which has a pixel electrode positioned at the pixel area and a bonding electrode positioned at the bonding area, is formed on the front substrate. Then, a dielectric layer is formed over the pixel area and the bonding area to cover the pixel electrode and the bonding electrode, respectively. Thereafter, a rear plate is sealed to the front substrate by a sealing material so that the rear plate covers the pixel area without covering the bonding area. Then, the dielectric layer formed on the bonding area is removed to expose the bonding electrode.
    Type: Application
    Filed: September 26, 2002
    Publication date: January 30, 2003
    Applicant: Acer Display Technology, Inc.
    Inventors: Yao-Ching Su, Wen-Fa Sung, Chun-Tang Peng
  • Patent number: 6512082
    Abstract: A polymer which comprises triarylamine units, which polymer comprises one or more structural units comprising Arh-NAr2, where Arh comprises a substituted or unsubstituted heteroaryl group and each Ar is the same or different and comprises a substituted or unsubstituted aryl or heteroaryl group and excluding the copolymer where the polymer backbone contains one or more divinylenearylene units.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: January 28, 2003
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Carl R. Towns, Richard O'Dell
  • Patent number: 6512565
    Abstract: The present invention provide a homeotropic alignment liquid crystal display having a multi-domain which is capable of obtaining symmetrical viewing angles and simultaneously preventing color shift. An upper substrate and a lower substrate are opposed each other to be spaced apart and a liquid crystal layer interposed between inner surfaces of the upper and lower substrates. A first electrode and a second electrode are formed on the inner surface of the lower substrate, wherein the first electrode and the second electrode form an electric field for driving liquid crystal molecules. Further, homeotropic alignment layers are interposed between the lower substrate and the liquid crystal layer and between the upper substrate and the liquid crystal layer respectively.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: January 28, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Seung Hee Lee, Yun Hee Lee, In Cheol Park
  • Patent number: 6512503
    Abstract: The invention discloses a liquid crystal display capable of preventing color shift and also improving response time characteristics.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: January 28, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee, Won Geon Lee
  • Patent number: 6507150
    Abstract: A front plate of a plasma display panel includes a substrate, a transparent electrode formed on the substrate, and an auxiliary electrode having a first part formed on the transparent electrode and a second part directly formed on the substrate, a dielectric layer formed on the transparent electrode and the first part of the auxiliary electrode, and an isolating layer formed between the substrate and the auxiliary electrode, at a position where the boundary of the dielectric layer intersects the upper surface of the auxiliary electrode. The isolating layer can prevent the auxiliary electrode from being peeled from the substrate.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: January 14, 2003
    Assignee: Acer Display Technology, Inc.
    Inventors: Yih-Jer Lin, Yao-Ching Su
  • 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: 6501453
    Abstract: The present invention provides a driving method for a liquid-crystal-display (LCD) which is driven by a plurality of switching transistors positioned in a matrix. The drain of each switching transistor couples to a first scanning signal via a storage capacitor and to a pixel electrode. The gate and the source of each switching transistor respectively couples to a second scanning signal and a video signal. One step of the driving method is shifting the video signal to have a dc voltage of a first predetermined voltage.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: December 31, 2002
    Assignee: Acer Display Technology Inc.
    Inventor: Jia-Fam Wong
  • Patent number: 6498049
    Abstract: A method for forming a display device, comprising: depositing a thin-film transistor switch circuit on a substrate; depositing by ink-jet printing an electrode layer of light transmissive conductive organic material in electrical contact with the output of the thin-film transistor circuit; and depositing an active region of the device over the electrode layer.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: December 24, 2002
    Assignees: Cambridge Display Technology, Seiko Epson Corporation
    Inventors: Richard H. Friend, Carl R. Towns, Julian C. Carter, Stephen K. Heeks, Hermann F. Wittman, Karl Pichler, Ichio Yudasaka
  • 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: 6489573
    Abstract: An electrode bonding structure is disclosed for reducing the thermal expansion of a circuit board during the bonding process of the circuit board and a substrate of a flat display. The electrode bonding structure includes a substrate, a circuit board, and an anisotropic conductive film ACF. A substrate dielectric layer and an indenting pad are formed on the surface of the substrate, and the inner surface of the indenting pad is lower than the surface of the substrate dielectric layer by an indenting depth H3. The circuit board is placed parallel to the substrate, and a circuit dielectric layer and a bump pad are formed on the surface of the circuit board. The bump pad is higher than the surface of the circuit dielectric layer by a height H1. The ACF is placed between the substrate and the circuit board, and the thickness of the ACF is a thickness H2.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: December 3, 2002
    Assignee: Acer Display Technology
    Inventors: Jiun-Han Wu, Tzeng-Shii Tsai, Po-Cheng Chen
  • Patent number: 6488555
    Abstract: There is disclosed an organic light-emitting device having at least one layer of light-emissive organic material arranged between first and second electrodes, one of the first and second electrodes being a multilayer structure, each layer of the multilayer structure being a DC magnetron sputtered layer. There is also disclosed an organic light-emitting device having two or more layers of light-emissive organic material arranged between first and second electrodes, an upper most layer of the organic material being more resistant to sputter deposition than an underlying layer of the organic material, and the electrode formed over the upper most layer of organic material being a sputtered layer. There is also disclosed methods for making such structures.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: December 3, 2002
    Assignee: Cambridge Display Technology Limited
    Inventors: Karl Pichler, Peter Devine
  • 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: D468310
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: January 7, 2003
    Assignee: Topvision Display Technologies, Inc.
    Inventor: Simon Tu