Patents Examined by Michelle R. Connelly-Cushwa
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Patent number: 8014639Abstract: An optical NOR gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator electrically connected in series with a waveguide photodetector. The optical NOR gate utilizes two digital optical inputs and a continuous light input to provide a NOR function digital optical output. The optical NOR gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 ?m.Type: GrantFiled: November 13, 2008Date of Patent: September 6, 2011Inventors: Erik J. Skogen, Anna Tauke-Pedretti
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Patent number: 8014638Abstract: A signal transmission device includes a base plate and a photoelectric converter-sealed member. The base plate is structured to have an optical waveguide formed internally, an opening formed to expose the optical waveguide, and a mounting surface provided to allow an electronic part to be mounted thereon. The photoelectric converter-sealed member is placed in the opening of the base plate to include a photoelectric conversion module for making conversion between an electric signal and a light signal and provided by sealing at least the photoelectric conversion module with a predetermined material to expose at least part of a wiring from the photoelectric conversion module on a substantially identical plane with an opening end face of the opening of the base plate. The opening is either a recess or a through hole. This arrangement desirably ensures the higher-speed transmission of electric signals between the photoelectric conversion module and the LSI package.Type: GrantFiled: March 30, 2007Date of Patent: September 6, 2011Assignee: The University of TokyoInventors: Yoshiaki Nakano, Xueliang Song, Shurong Wang
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Patent number: 8004632Abstract: A flat display device includes a flat display panel, an upper polarizing plate disposed on a light exit plane of the flat display panel, and a lower polarizing plate disposed on a light entrance plane of the flat display panel. The upper polarizing plate includes a wide view film, and its absorption axis and a horizontal view direction of the flat display panel have an included angle of about 15 degrees. The absorption axis of the lower polarizing plate and the horizontal view direction of the flat display panel have an included angle of about 105 degrees.Type: GrantFiled: October 14, 2008Date of Patent: August 23, 2011Assignee: BenQ Materials CorporationInventors: Shih-Wei Chao, Ying-Ying Chu, Chun-Hung Lin
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Patent number: 8004631Abstract: A backlight unit for a liquid crystal display (LCD) device includes a light emitting device (LED) array portion having a plurality of LEDs and a diverter sheet disposed on the LED array portion and having continuous reflection surface in spaced relationship with to the LED array portion.Type: GrantFiled: June 26, 2006Date of Patent: August 23, 2011Assignee: LG Display Co., Ltd.Inventors: Ju-Young Bang, Myung-Gi Jang, Hee-Jeong Park, Gil-Won Han
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Patent number: 8004633Abstract: A color filter substrate including a base, a patterned color filter film layer, a common electrode layer and shelters is provided. The patterned color filter film layer is disposed on the base. Here, the patterned color filter film layer has recesses. Additionally, the patterned color filter film layer and the base are covered by the common electrode layer conforming to surfaces of the recesses. Moreover, the recesses and the common electrode layer are covered by the shelters.Type: GrantFiled: October 9, 2008Date of Patent: August 23, 2011Assignee: Chunghwa Picture Tubes, Ltd.Inventors: De-Jiun Li, Chun-Ming Huang, Yen-Ju Chen, Der-Chun Wu
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Patent number: 8002478Abstract: An optical receptacle that enhances the optical coupling tolerance is disclosed. The optical receptacle of the invention provides, in stead of the coupling fiber installed in a conventional optical receptacle, a glass member with a diameter substantially equal to the diameter of the external fiber. The glass member, which is held by the support, provides a convex surface that abuts against the top of the external ferrule and another surface inclined with the optical axis to prevent the light reflected thereat from returning the optical device. The glass member has a substantially homogeneous distribution in the refractive index thereof; accordingly, the fluctuation in the optical coupling with the external ferrule may be reduced.Type: GrantFiled: August 25, 2009Date of Patent: August 23, 2011Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yasunori Michitsuji, Hiromi Nakanishi, Kenji Hirayama
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Patent number: 7995872Abstract: An optical modulator component 2 has a substrate 4 for modulation made of an electro-optical material and having a joining face 4b; an optical waveguide 6 provided in or on the substrate 4 and having at least one pair of branched portions 6c; and a radio-frequency interaction portion 11 applying a voltage on the respective branched portions 6c to modulate light propagating through the branched portions. The optical waveguide 6 has end faces 15A, 15B, 15C and 15D present on the joining face 4b of the substrate 4 for modulation.Type: GrantFiled: July 9, 2009Date of Patent: August 9, 2011Assignee: NGK Insulators, Ltd.Inventors: Kenji Aoki, Osamu Mitomi, Jungo Kondo, Yuichi Iwata, Tetsuya Ejiri
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Patent number: 7990490Abstract: An optical sheet includes a base layer, a light-condensing layer and a plurality of light-reflecting portions. The base layer includes a first surface and a second surface. The light-condensing layer includes a plurality of light-condensing portions with a first pitch. The light-condensing portions are formed along a first direction of the second surface. The light-reflecting portions are formed in the first surface to be spaced apart from each other along the -first direction in correspondence with a plurality of grooves, each groove formed between two light-condensing portions. An interval distance between a center of the light-condensing portion and an edge of the light-reflecting portion increases when moving toward the edge of the first surface from a center of the first surface along the first direction. Therefore, the number of the optical sheets used for the display device may be reduced.Type: GrantFiled: December 4, 2008Date of Patent: August 2, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-Hoon Lee, Byung-Yun Joo, Min-Young Song, Jin-Sung Choi, Seung-Hwan Chung, Dong-Kwan Kim
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Patent number: 7990491Abstract: A liquid crystal display device has a thin structure with a backlight device appropriate for illuminating a liquid crystal panel where there is no area in band form where the brightness is inconsistent. The size of the diffusion plate that forms the optical sheet of the backlight device is made smaller than the opening for illumination in the diffusion region, and the diffusion plate is not provided in the vicinity of the end portions of the opening for illumination in the configuration. In this configuration, the reflection properties are different in the vicinity of the end portions and as the center portion of the opening for illumination, and the brightness increases in the vicinity of the end portions of the backlight device, so that an area in band form where the brightness is inconsistent can be prevented from being created in the end portions of the display device.Type: GrantFiled: October 15, 2008Date of Patent: August 2, 2011Assignee: Hitachi Displays, Ltd.Inventors: Daisuke Kajita, Yoshifumi Sekiguchi, Akitoyo Konno, Makoto Tsumura, Ikuo Hiyama
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Patent number: 7990493Abstract: A laminated optical film including a first optical anisotropic layer, and a second optical anisotropic layer, wherein Relationship (1) is satisfied when a slow phase axis of the first optical anisotropic layer is substantially perpendicular to a slow phase axis of the second optical anisotropic layer, ?10 nm??Re1??Re2?10 nm??Relationship (1) wherein Relationship (2) is satisfied when the slow phase axis of the first optical anisotropic layer is substantially parallel to the slow phase axis of the second optical anisotropic layer, and ?10 nm??Re1+?Re2?10 nm ??Relationship (2) wherein an in-plane retardation value Re of the film as a whole satisfies 30 nm?Re?500 nm, where ?Re1 denotes a value calculated from “Re1 (at an RH of 80%)—Re1 (at an RH of 50%)” concerning the first optical anisotropic layer, and ?Re2 denotes a value calculated from “Re2 (at an RH of 80%)—Re2 (at an RH of 50%)” concerning the second optical anisotropic layer.Type: GrantFiled: September 22, 2008Date of Patent: August 2, 2011Assignee: FUJIFILM CorporationInventors: Shun Nakamura, Yasuyuki Sasada
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Patent number: 7986376Abstract: It is possible to realize a driver circuit which exhibits low power consumption and high image quality in a liquid crystal display device used in miniaturized portable equipment. In a liquid crystal display device which includes a liquid crystal display element and a liquid crystal driver circuit, the liquid crystal driver circuit is mounted on one side of a liquid crystal display panel. The liquid crystal driver circuit can output counter electrode voltages of two systems and hence, the liquid crystal driver circuit can select a first mode in which the first counter voltage and the second counter voltage have the opposite polarities from each other and a second mode in which the first counter voltage and the second counter voltage have the same polarity. Due to such constitution, while driving the liquid crystal display device in the first mode, the second mode is selected depending on a video signal thus realizing power saving.Type: GrantFiled: November 14, 2008Date of Patent: July 26, 2011Assignee: Hitachi Displays, Ltd.Inventors: Taku Saito, Shuuichirou Matsumoto
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Patent number: 7982825Abstract: A backlight assembly includes a light-guiding plate and a light-generating member. The light-guiding plate has a lower surface, an upper surface and a side surface at which a combining recess is formed. The light-generating member includes a light source and a body. The combining recess has a first side surface, a second side surface facing the first side surface and a light-entering surface connected to the first and second side surfaces. A first width of the combining recess adjacent to the side surface of the light-guiding plate is smaller than a second width of the combining recess adjacent to the light-entering surface. Moreover, at least a portion of the body of the light-generating member is for being inserted into the combining recess.Type: GrantFiled: January 24, 2007Date of Patent: July 19, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-Kwang Kim, Hwan-Jin Kim
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Patent number: 7982813Abstract: A liquid crystal display includes a substrate, a plurality of pixels including a plurality of switching elements, a plurality of gate lines connected to the switching elements and extending in a row direction, and a gate driver including a circuit portion connected to the gate lines and a wiring portion connected to the circuit portion. The circuit portion includes a transistor and the wiring portion includes a signal line, and the transistor and the signal line are connected via a connecting member, whereby electrostatic electricity is prevented from being introduced in the gate driver of the display during a manufacturing process.Type: GrantFiled: May 18, 2007Date of Patent: July 19, 2011Assignee: Samsung Electronics, Co., Ltd.Inventor: Duk-Sung Kim
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Patent number: 7982816Abstract: A liquid crystal display device and a method of assembling the same are provided to prevent coming-off of a wire and damage to the wire by improving a structure of a main support and a guide panel in an edge type liquid crystal display device and a method of assembling the same.Type: GrantFiled: December 17, 2008Date of Patent: July 19, 2011Assignee: LG Display Co., Ltd.Inventor: Joung-Hun Lee
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Patent number: 7983516Abstract: The present disclosure includes methods, devices, and systems for zinc oxide diodes for optical interconnections. One system includes a ZnO emitter confined within a circular geometry in an oxide layer on a silicon substrate. An optical waveguide is formed in the oxide layer and has an input coupled to the ZnO emitter. A detector is coupled to an output of the optical waveguide.Type: GrantFiled: September 23, 2009Date of Patent: July 19, 2011Assignee: Micron Technology, Inc.Inventors: Leonard Forbes, Kie Y. Ahn
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Patent number: 7978289Abstract: A flexible display device may include a first panel including a multifunction film, a second panel arranged facing the first panel with a gap therebetween, the second panel including a substrate and electrodes formed on the substrate, and an electro-optical active layer disposed in the gap between the first panel and the second panel. The multifunction film may perform at least two of the following functions: aligning molecules in the electro-optical active layer, protecting the electro-optical active layer, keeping the thickness of the electro-optical active layer uniform, and serving as a flexible substrate.Type: GrantFiled: August 18, 2006Date of Patent: July 12, 2011Assignees: Samsung Mobile Display Co., Ltd., Seoul National University Industry FoundationInventors: Sin-Doo Lee, Yeun-Tae Kim
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Patent number: 7978283Abstract: A shielding structure of thin type monitor device, includes: a monitor body; a first shielding box which is arranged in the monitor body, which is formed by cutting and bending a metal plate, which includes a flat plate portion having rectangular shape, and a terminal supporting portion which is formed by bending one end portion of the flat plate portion, into which a terminal is passed through, and which is fixed on a metal plate in the monitor body that is grounded; a terminal holder which includes a terminal hole which contacts with an opposite side of the terminal supporting portion with respect to the flat plate portion, through which the terminal is passed, and which forms a part of case of the monitor body; and a second shielding box which is formed by cutting and bending a metal plate, which includes a protecting portion that has a rectangular shape, that is arranged such that it contacts with the terminal supporting portion and that is made be parallel with the flat plate portion, and a standing portType: GrantFiled: September 23, 2008Date of Patent: July 12, 2011Assignee: Funai Electric Co., Ltd.Inventors: Takashi Tsutsumi, Shinji Morita
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Patent number: 7978953Abstract: A method is provided for visual inspection of an array of interferometric modulators in various driven states. This method may include driving multiple columns or rows of interferometric modulators via a single test pad or test lead, such as test pad, and then observing the array for discrepancies between the expected optical output and the actual optical output of the array. This method may particularly include, for example, driving a set of non-adjacent rows or columns to a state different from the intervening rows or columns and then observing the optical output of the array.Type: GrantFiled: August 15, 2008Date of Patent: July 12, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: William J Cummings, Brian J Gally
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Patent number: 7978942Abstract: A system and method for compensating for non-uniform illumination from a light guide for a display in an electronics device is provided. The system comprises: a memory device storing a data representing a first compensation pattern for generation on the display to block light from a first portion of the light guide relative to light from a second portion of the light guide; a first module to incorporate the stored representation into an image to be displayed on the display; and a second module to generate the image with the stored representation for display on the display. In the system, when the first module generates the first compensation pattern on the display, the first compensation pattern aligns with the first and second portions to reduce an intensity of light from a light source passing through the first compensation pattern from the first portion relative to an intensity of light passing through the first compensation pattern from the second portion from the light source.Type: GrantFiled: December 9, 2009Date of Patent: July 12, 2011Assignee: Research in Motion LimitedInventors: James Robinson, Marc Drader, Michael Purdy
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Patent number: 7973882Abstract: There is provided a liquid-crystal-layer 15 in which an electrical field is applied in a direction parallel to a first substrate. Respective absorption axes of the first substrate provided with a first polarizing-plate 12 on a light-input side and a second substrate provided with a second polarizing-plate 11 on a light-output side are perpendicular. An optical axis of the liquid-crystal-molecule is parallel to the output polarizing-plate 11 and the absorption axis of the input polarizing-plate 12. A matrix-drive-electrode group is positioned on a side of the liquid-crystal-layer 15 of the first or second substrate. The input and output polarizing-plate are composed of a polarizing layer and a supporting-substrate material. The supporting-substrate material is present on the liquid-crystal-layer side of the polarizing layer. The supporting-substrate material of one of the input or output polarizing-plate is birefringent, and the Nz coefficient being 4 or more.Type: GrantFiled: October 21, 2008Date of Patent: July 5, 2011Assignee: Hitachi Displays, Ltd.Inventors: Daisuke Kajita, Kentarou Ojima, Ikuo Hiyama, Masahiro Ishii