Patents Examined by Matthew Tynan
  • Patent number: 7440074
    Abstract: An object of the present invention is to provide a method for repairing light point defects in which light points can be converted to black spots through a simple process without affecting surrounding pixels, and the repaired pixels can be maintained without their returning to light points even with the passage of time. The present invention provides a method for repairing light point defect pixels of a liquid crystal display device having a liquid crystal panel which comprises a pair of substrates, a liquid crystal layer interposed between the pair of substrates, and a pair of alignment films each of which is provided between the substrate and the liquid crystal layer restraining the orientation of the liquid crystals of the liquid crystal layer.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: October 21, 2008
    Assignee: Seiko Epson Corporation
    Inventor: Kazushige Umetsu
  • Patent number: 7436464
    Abstract: An active-matrix substrate includes: a base substrate; source lines; gate lines; thin-film transistors; and pixel electrodes. Each transistor is a bottom-gate thin-film transistor. The source lines are arranged under the gate lines with a first interlayer insulating film interposed and are electrically connected to the respective source electrodes of their associated thin-film transistors through contact holes cut through the first interlayer insulating film.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: October 14, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshihiro Okada, Wataru Nakamura, Kenji Nakamura
  • Patent number: 7403254
    Abstract: An in-plane switching liquid crystal display device includes first and second substrates, gate lines and data lines on the first substrate and intersecting each other, a plurality of unit pixels defined by the intersection of the gate and data lines, each unit pixel including a plurality of sub-pixel regions, at least one common electrode and at least one common electrode and at least one pixel electrode alternately arranged in each of the sub-pixel regions to define a first region, an in-plane electric field being generated in the first region, and at least one of the common electrode and the pixel electrode having a first closed-curved surface shape with a hollow center, and a liquid crystal layer between the first substrate and the second substrate.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: July 22, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Yun-Bok Lee, Sang-Min Jang, Youn-Gyoung Chang, Won-Ho Lee
  • Patent number: 7400374
    Abstract: In a semi-transmissive liquid crystal display device provided with a liquid crystal panel DP and a backlight BL, black spacers and transparent spacers are mixed and provided in a space between two opposing transparent substrates 4a and 4b, and let r be a radius of the spacers and S be a dimension of a light transmissive region T in a single pixel, then a value of ?r2/S is set in a range from 0.001 to 0.01. A stable display is thus enabled by eliminating display irregularities.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: July 15, 2008
    Assignee: Kyocera Corporation
    Inventor: Yasunari Nagata
  • Patent number: 7375780
    Abstract: A method of manufacturing a reflecting substrate in a liquid crystal display device is disclosed, comprising the steps of: (a) providing a substrate having a first metal layer, wherein the first metal layer is formed with at least one soft metal or the alloys thereof; and (b) forming an aluminum nitride layer on the first metal layer. The method of the present invention is capable of forming a rugged, shining, reflective layer on a transflective, or a reflection type TFT LCD with simple steps and low cost.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: May 20, 2008
    Assignee: AU Optronics Corporation
    Inventors: Ching-Hung Chen, Lung-Pao Shin, Ming-Yan Tsai
  • Patent number: 7372514
    Abstract: An active matrix type display device includes inter-pad short-circuiting lines which are connected with signal lines, terminal portions which transmit signals from an IC chip to the signal lines, and a plurality of short-circuiting lines which are arranged outside the terminal portions and inside an end surface of a substrate and are connected with a plurality of inter-pad short-circuiting lines, wherein cut regions of the inter-pad short-circuiting lines are arranged outside the terminal portions and inside the short-circuiting lines. Since repair lines and signal-line lead line do not cross each other, it is possible to perform the highly reliable repair in respective manufacturing steps.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: May 13, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventors: Shinzo Matsumoto, Kunihiko Watanabe
  • Patent number: 7369188
    Abstract: In a thin film transistor substrate, a method of manufacturing the same, and a display apparatus having the same, a thin film transistor, a gate member, and a storage member are formed on an insulating substrate. The gate member has a gate line and a gate electrode electrically connected to the gate line, and the storage member has a storage line, a first storage electrode, and a second storage electrode. A data member is formed on an active layer. The data member includes a data line crossing the gate line, a third storage electrode overlapped with the first storage electrode and a fourth storage electrode overlapped with the second storage electrode. Thus, a capacitance variation of a storage capacitor may be prevented, thereby improving display quality of a display apparatus.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: May 6, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Geun Lee, Hye-Young Ryu
  • Patent number: 7369186
    Abstract: A polarizing beam splitter includes a polarization splitting layer which includes stacked one-dimensional grating layers. The grating layers can include alternating layers of at least one H layer having an effective refractive index nH for p-polarized light and at least one L layer having an effective refractive index nL for p-polarized light.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: May 6, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiko Momoki
  • Patent number: 7330235
    Abstract: A liquid crystal display panel including a first substrate, a second substrate and a liquid crystal layer is provided. The first substrate has a plurality of scan lines, data lines and thin film transistors thereon, and the thin film transistors are driven by the scan lines and data lines. In particular, a plurality of patterned openings are formed in at least one of the scan lines and data lines. The second substrate having a plurality of photo spacers thereon is disposed above the first substrate, and the photo spacers are wedged in the patterned openings. The liquid crystal layer is disposed between the first substrate and second substrate. Because the photo spacers are wedged in the patterned openings, the cell gap between the first and second substrates can be kept uniformly.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: February 12, 2008
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Kuan-Cheng Hsiao
  • Patent number: 7319502
    Abstract: A multi-domain IPS (in-plane switching) liquid crystal display (20) includes a first substrate (201), a second substrate (202), liquid crystal molecules (203) filled between the first and second substrates, and gate lines (211) and data lines (212) formed on the first substrate. The gate lines and data lines define pixel regions arranged in a matrix. Each pixel region includes pixel electrodes (233), common electrodes (243), and a TFT (thin film transistor) (220). The pixel electrodes and the common electrodes have a same curved shape with at least two different bend portions, and are uniformly spaced apart from each other. Therefore the electric field generated by them is a smooth continuum of multiple domains, and the visual performance at various different viewing angles is equally good. Because the pixel and common electrodes do not have sharp bends, disclination is avoided. Therefore the IPS liquid crystal display has a high contrast ratio.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: January 15, 2008
    Assignee: Innolux Display Corp.
    Inventors: Chueh-Ju Chen, Chueh-Ju Yang