Patents Examined by Jonathan Horner
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Patent number: 8803787Abstract: A liquid crystal display apparatus includes a display panel which a plurality of pixel lines each having a plurality of liquid crystal pixels, an illumination light source which illuminates the display panel, and a display control section which outputs a signal voltage sequentially to the pixel lines to write a video signal, and which controls ON/OFF of the illumination light source, wherein the display control section includes, a temperature detector which detects temperature information, and a timing control section which lights the illumination light source after a video signal writing operation into a predetermined pixel line is completed when the temperature information is a first temperature, and which lights the illumination light source before the video signal writing operation into a predetermined pixel line is completed when the temperature information is a second temperature that is lower than the first temperature.Type: GrantFiled: September 17, 2008Date of Patent: August 12, 2014Assignee: Japan Display Inc.Inventors: Tetsuya Kojima, Kazuhiro Nishiyama
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Patent number: 8797246Abstract: A liquid crystal display substrate has a data driver circuit and a gate driver circuit for driving the liquid crystal display integrated thereon together with a common drive circuit, where common voltages VCOMH and VCOML are applied from the outside through a pad. The gate driver circuit is placed to be adjacent to one of the four terminals of the liquid crystal display. The common drive circuit is placed to be adjacent to the terminal opposite to where the gate driver circuit is placed and as close to the pad as possible while having almost the same width as the area of the gate driver circuit. The pad close to where the common drive circuit is placed is used as the pad for applying the common voltages VCOMH and VCOML.Type: GrantFiled: February 14, 2012Date of Patent: August 5, 2014Assignee: Gold Charm LimitedInventor: Katsumi Abe
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Patent number: 8780039Abstract: An optical system is provided, for example for use with a display device, for varying the shape of a surface in which an image displayed by the display device is perceived. The optical system comprises first and second spaced-apart partial reflectors, at least one of which is switchable between a first non-flat shape and a second different shape, which may be flat or non-flat. The reflectors, together with polarisation optics, provide a light path such that light from the display is at least partially transmitted by the first reflector, partially reflected by the second reflector, partially reflected by the first reflector and partially transmitted by the second reflector. Light which does not follow the light path is prevented from leaving the optical system.Type: GrantFiled: November 11, 2009Date of Patent: July 15, 2014Assignee: Sharp Kabushiki KaishaInventors: Gregory Gay, Lesley Anne Parry-Jones
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Patent number: 8754877Abstract: A liquid crystal panel unit, a display device, and a method of manufacturing the same, in which the display device includes: a display panel that includes a display region; a gate driver that applies a gate signal to the display region; a data driver that applies a data signal to the display region; a vertical synchronization signal line that transfers a vertical synchronization start signal to the gate driver; a data signal line that transfers the data signal to the data driver; and an isolation pattern that is arranged between the vertical synchronization signal line and the data signal line. The isolation pattern intercepts an electromagnetic field that is generated and prevents image degradation.Type: GrantFiled: October 1, 2008Date of Patent: June 17, 2014Assignee: Samsung Display Co., Ltd.Inventor: Heung-Su Cho
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Patent number: 8749465Abstract: A method for driving an active matrix display wherein each image frame is divided into a number of displayed frame portions, each of which is followed by a darker frame portion. The image data in the darker frame portion is removed so as to allow the pixel luminance to diminish. The temporal separation between the displayed frame portion and the following darker frame portion is smaller than a frame time. In a display where the lines are driven repetitively for forming the display image in a plurality of frame times, the image data provided to a pixel, after the luminance in that pixel changes from low to high, is adjusted so that the brightness of the pixel in the preceding frame times appear higher or not lower than that in following frames times.Type: GrantFiled: November 29, 2006Date of Patent: June 10, 2014Assignee: AU Optronics CorporationInventors: Yu-Hsi Ho, Wen-Chieh Chang, Fang-Yu Su, Yao-Jen Hsieh
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Patent number: 8743032Abstract: Disclosed here in is a display apparatus, including, a pixel array section including a plurality of pixels arrayed in rows and columns and each including an electro-optical device, a pixel circuit provided commonly to each plural ones of the pixels in the same pixel row in the pixel array section and including a writing transistor for writing an image signal, a holding capacitor for holding the image signal written by the writing transistor and a driving transistor for driving the electro-optical devices of the plural pixels, and a plurality of scanning circuits configured to time-divisionally and selectively place the electro-optical devices included in the pixels into a forwardly biased state.Type: GrantFiled: September 23, 2008Date of Patent: June 3, 2014Assignee: Sony CorporationInventors: Junichi Yamashita, Katsuhide Uchino
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Patent number: 8723785Abstract: A liquid crystal display includes: a transmissive liquid crystal display device having a display region made up of pixels arrayed in a matrix fashion. The liquid crystal display device includes a planar light source unit formed of planar light source units corresponding to respective display region units on an assumption that the display region is divided into the display region units and configured in such a manner that each planar light source unit irradiates a corresponding display region unit with light, and a drive circuit driving the liquid crystal display device and the planar light source device. The liquid crystal display device is scanned line-sequentially and the pixels making up each display region unit are scanned line-sequentially. A planar light source unit corresponding to a display region unit is held in a luminous state over a predetermined period since a line-sequential scan on the display region unit has been completed.Type: GrantFiled: January 25, 2010Date of Patent: May 13, 2014Assignee: Sony CorporationInventors: Hideki Sugimoto, Hiroshi Hasegawa
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Patent number: 8711064Abstract: A digital-signal processing apparatus for processing elementary-color data to be output to a liquid-crystal display apparatus having a color panel structure, the digital-signal processing apparatus including: a line-unit weight-coefficient sum computation section; a compensation-coefficient computation section; a partial-weight-coefficient-sum computation section; a first-compensation-quantity-component computation section; a second-compensation-quantity-component computation section; a compensation-quantity computation section; a line memory used for applying a 1-line period extension process to each elementary-color data; and a horizontal-cross-talk compensation section for successively compensating each elementary-color data, which has been subjected to the 1-line period extension process in the line memory.Type: GrantFiled: September 16, 2008Date of Patent: April 29, 2014Assignee: Sony CorporationInventors: Takashi Hirakawa, Masakazu Aoki, Naoki Ohashi
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Patent number: 8704755Abstract: An electrophoretic display includes a display area where images are displayed, and an edge area around the display area and where a single color is displayed. The display area includes a plurality of display pixels which include gate lines on a first substrate, data lines intersecting the gate lines, thin film transistors connected to the gate lines and data lines, display pixel electrodes on the first substrate and connected to the thin film transistors, a common electrode on a second substrate and facing the first substrate, and an electronic ink layer between the display pixel electrodes and the common electrode The edge area includes a plurality of edge pixels which include edge pixel electrodes in a same shape as the display pixel electrodes.Type: GrantFiled: March 8, 2011Date of Patent: April 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Ji-Sun Kim, Seong-Young Lee
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Patent number: 8681077Abstract: When light emitting elements have the same luminance, luminosity obtained from one pixel can be higher as area of a light emitting region in the pixel (also called an aperture ration) is increased. The aperture ratio of a pixel is low if the number of transistors and wires constituting the pixel is large. Thus, the invention is to decrease the number of transistors and wires constituting a pixel to increase the aperture ratio. Instead of a power supply line to which a certain potential is set, a potential supply line which controls a potential by a signal is provided; supplying an applied voltage to a light emitting element can be controlled by a signal of the potential supply line without providing a switch.Type: GrantFiled: March 9, 2006Date of Patent: March 25, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hajime Kimura
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Patent number: 8674949Abstract: A liquid crystal display apparatus includes a display panel configured to have a plurality of scanning lines for which liquid crystal display elements each containing an optical input device and a display pixel are arranged, respectively, a backlight configured to be arranged facing the display panel to illuminate the display panel, and a control part configured to control writing into the display pixel and reading of a detection signal of the optical input device, wherein the control part displays an external light detection image substantially shielding light from the backlight on the display pixels throughout a first period of a frame period, and displays a display image on the display pixels throughout a second period of the frame period.Type: GrantFiled: February 15, 2008Date of Patent: March 18, 2014Assignee: Japan Displays Inc.Inventors: Kenji Nakao, Yasuyuki Tsuji, Mitsutaka Okita, Shigesumi Araki
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Patent number: 8669932Abstract: A liquid crystal display and a driving method thereof are provided.Type: GrantFiled: June 26, 2006Date of Patent: March 11, 2014Assignee: LG Display Co., Ltd.Inventor: Hong Chul Kim
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Patent number: 8669930Abstract: A liquid crystal display and a method for driving the same, wherein one or more horizontal lines carrying no data among horizontal lines of a progressive-processed frame can be compensated with data, are provided. The liquid crystal display includes a frame processor, a timing controller, and a data driver. The frame processor performs data compensation of at least one horizontal line carrying no data among horizontal lines of an input frame. The timing controller controls a driving operation of the frame compensated by the frame processor. The data driver drives the frame compensated by the frame processor on a liquid crystal display panel under control of the timing controller.Type: GrantFiled: December 31, 2007Date of Patent: March 11, 2014Assignee: LG Display Co., Ltd.Inventors: Seong Gyun Kim, Tae Ho You
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Patent number: 8648780Abstract: A backlight display has improved display characteristics. An image is displayed on the display which includes a liquid crystal material with a light valve. The display receives an image signal and modifies the light based upon motion.Type: GrantFiled: July 18, 2006Date of Patent: February 11, 2014Assignee: Sharp Laboratories of America, Inc.Inventor: Xiao-Fan Feng
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Patent number: 8648850Abstract: A method and apparatus for controlling picture quality of a flat panel display capable of electrically compensating for a display defect of a display panel are disclosed. The method of compensating for a display defect of a flat panel display includes reading identification information of a display panel; generating positional information indicating the position of the display defect and the form of the display defect of the display panel on the basis of first input information and the identification information; generating a compensation value for compensating the degree of the display defect of on the basis of second input information; storing the positional information and the compensation value in a memory; and reading the positional information and the compensation value from the memory, modulating data to be displayed at the position of the display defect of the display panel by the compensation value, and displaying the modulated data on the display panel.Type: GrantFiled: December 31, 2007Date of Patent: February 11, 2014Assignee: LG Display Co., Ltd.Inventor: Hye Jin Kim
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Patent number: 8638287Abstract: Provided is a liquid crystal display device that can improve the image quality of a moving image. The liquid crystal display device includes a driver, a backlight unit, a first lamp driver, a second lamp driver, and a lamp driving controller. The liquid crystal panel divided is into at least three regions, and has a plurality of lamps arranged to correspond to each of the divided regions. Lamps of the lamps arranged in upper and lower regions of the liquid crystal panel are connected to each other. The first lamp driver controls on/off times of the lamps in the upper and lower regions of the liquid crystal panel. The second lamp driver controls on/off times of the lamps in the region excluding the upper and lower regions of the liquid crystal panel. The lamp driving controller controls the first and second lamp drivers using signals supplied from the driver.Type: GrantFiled: December 26, 2007Date of Patent: January 28, 2014Assignee: LG Display Co., Ltd.Inventor: Ki Duk Kim
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Patent number: 8633874Abstract: A display device includes luminescence pixels arranged in rows and columns. Each of gate lines and reset lines correspond to one of the rows, and signals lines each correspond to one of the columns. Each luminescence pixels includes a luminescence element, a switching transistor, a drive transistor which supplies current to the luminescence element, and a reset transistor. The reset transistor includes a gate terminal connected to a corresponding reset line, one of a source and drain terminal connected to a source or drain terminal of the drive transistor, and the other of the source and drain terminal connected to a corresponding gate line. A capacitor is connected between the gate terminal and the source terminal of the drive transistor.Type: GrantFiled: November 3, 2011Date of Patent: January 21, 2014Assignee: Panasonic CorporationInventor: Masafumi Matsui
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Patent number: 8629824Abstract: A liquid crystal display device is disclosed, which can reduce a unit cost and prevent deterioration of picture quality caused by unfilled pixel cells, the liquid crystal display device comprising a liquid crystal panel including a plurality of pixel cells formed at every regions defined by ‘n’ gate lines and ‘m’ data lines, three colors alternatively arranged along the data line direction, and the same colors arranged along the gate line direction; a gate built-in circuit, built-in the liquid crystal panel, for supplying gate-on voltages to the gate lines; and a driving integrated circuit, formed in the liquid crystal panel, for driving the gate built-in circuit, inverting a polarity of video signal in the unit of each data line and at least three gate lines, and supplying the video signal having the inverted polarity to the data lines.Type: GrantFiled: December 26, 2007Date of Patent: January 14, 2014Assignee: LG Display Co., Ltd.Inventor: Chang Keun Park
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Patent number: 8619013Abstract: A digital-analog converter (DAC) including: a gray scale generator having a plurality of switches for generating desired gray scale voltages through charge sharing between at least two data lines; a switching signal generator for providing operation control signals for the plurality of switches of the gray scale generator; and a reference voltage generator for generating reference voltages and for providing the reference voltages to the gray scale generator. In one embodiment, the charge sharing used by the DAC is executed by a holding capacitor and a sampling capacitor, and the holding capacitor and the sampling capacitor are formed using respective parasitic capacitance components existing in the at least two data lines, thereby reducing area and power consumption over an existing R-string type of DAC.Type: GrantFiled: November 28, 2006Date of Patent: December 31, 2013Assignee: Samsung Display Co., Ltd.Inventors: Oh Kyong Kwon, Byong Deok Choi
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Patent number: 8614652Abstract: A light emitting device display, its pixel circuit and its driving technique is provided. The pixel includes a light emitting device and a plurality of transistors. A bias current and programming voltage data are provided to the pixel circuit in accordance with a driving scheme so that the current through the driving transistor to the light emitting device is adjusted.Type: GrantFiled: April 17, 2009Date of Patent: December 24, 2013Assignee: Ignis Innovation Inc.Inventors: Arokia Nathan, G. Reza Chaji, Stefan Alexander