Patents Assigned to Panasonic Liquid Display Co., Ltd.
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Patent number: 9166056Abstract: In a thin-film semiconductor device, a semiconductor layer has a bandgap energy of 1.6 eV or less, an insulating layer formed above the semiconductor layer includes: a first insulating layer region placed outside of a first contact opening and above one end of a gate electrode; a second insulating layer region placed outside of a second contact opening and above the other end of the gate electrode which opposes the one end; and a third insulating layer region being rectangular and placed between the first contact opening and the second contact opening.Type: GrantFiled: July 12, 2013Date of Patent: October 20, 2015Assignees: PANASONIC CORPORATION, PANASONIC LIQUID DISPLAY CO., LTD.Inventors: Hiroshi Hayashi, Takahiro Kawashima, Genshiro Kawachi
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Patent number: 8891044Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: GrantFiled: October 10, 2007Date of Patent: November 18, 2014Assignees: Japan Display Inc., Panasonic Liquid Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
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Patent number: 8598603Abstract: Provided is a liquid crystal display device, including: a liquid crystal display panel; and a backlight unit, in which: the backlight unit includes: a plurality of light emitting diodes each having an anode and a cathode; a first substrate; and a second substrate, the plurality of light emitting diodes being mounted on the first substrate and the second substrate; the first substrate and the second substrate are disposed adjacent to each other; light emitting diodes which are adjacent across a boundary between the first substrate and the second substrate are disposed so that the respective anodes are opposed to each other and so as to have a pitch equal to or smaller than a pitch of other adjacent light emitting diodes.Type: GrantFiled: June 28, 2011Date of Patent: December 3, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Display Co., Ltd.Inventors: Masashi Baba, Ikuko Imajo, Isao Matsuda
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Patent number: 8368077Abstract: A second insulation layer which is formed by stacking a plurality of layers made of different materials in a mutually contact manner is formed such that the second insulation layer covers a source region and a drain region and also covers a gate electrode from above. A first contact hole which reaches one of the source region and the drain region and a recessed portion which is arranged above the gate electrode but is not communicated with the gate electrode are simultaneously formed on the second insulation layer by dry etching. A first line layer is formed so as to cover the first contact hole. After forming the first line layer, a bottom surface of the recessed portion is etched by dry etching thus forming a second contact hole which reaches the gate electrode in the first and second insulation layers. A second line layer is formed on the second contact hole.Type: GrantFiled: October 14, 2009Date of Patent: February 5, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Display Co., Ltd.Inventors: Takeshi Kuriyagawa, Takeshi Noda, Takuo Kaitoh
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Patent number: 8345205Abstract: A liquid crystal display includes a first substrate and a second substrate with a liquid crystal layer therebetween, the first substrate having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions defined by the drain signal lines and the gate signal lines. The pixel regions include a first electrode having a plurality of linear shapes, a second electrode having a planer shape, the second electrode being overlapped with the first electrode through an insulation film, and a thin film transistor having a video signal supplied thereto from the drain signal line. The first electrode is connected with the thin film transistor so that an electric potential of the video signal is supplied thereto, and a standard electric potential is supplied to the second electrode. A third electrode is arranged between the drain signal line and the liquid crystal layer.Type: GrantFiled: July 6, 2012Date of Patent: January 1, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Display Co., Ltd.Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8313806Abstract: Provided is a method for moving, in a vacuum chamber carrying therein a fixedly-provided evaporation source, a substrate toward the evaporation source together with a mask closely attached to the substrate surface, and onto the surface substrate, evaporating a material vaporized in the evaporation source through an aperture formed to the mask. In this method of the invention, means for moving the substrate toward the evaporation source is provided with cooling means not to come in contact with but to be in proximity to a surface of the mask on the evaporation source side, and a cooling plate formed with an aperture proximal to the evaporation source is disposed. With such a configuration, the steam of the material coming from the evaporation source is directed to the mask and the substrate through the aperture of the cooling plate.Type: GrantFiled: June 27, 2008Date of Patent: November 20, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Display Co., Ltd.Inventor: Hiroyasu Matsuura
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Patent number: 8208099Abstract: Provided is a backlit liquid crystal display apparatus having one pixel unit comprising RGB three primary color regions and a white region or a region having low color concentration, so that high brightness can be compatible with color purity. A pixel unit comprises RGB main pixels and G/R sub-pixels. In a lower gray scale, color purity has priority in display with main pixels, while in a higher gray scale, color purity has priority in display with main and sub-pixels, whereby high brightness can be compatible with color purity. Sub-pixels may be consisted only by green sub-pixels.Type: GrantFiled: September 1, 2006Date of Patent: June 26, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Display Co., Ltd.Inventors: Yuka Utsumi, Tsunenori Yamamoto, Kikuo Ono