Patents Examined by Mansour M. Said
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Patent number: 8395595Abstract: A display device with a touch sensor according to the present invention includes an active matrix substrate and a transparent counter electrode. On a first surface of the active matrix substrate, multiple pixel electrodes are arranged in matrix. The transparent counter electrode is opposed to the first surface of the active matrix substrate. The display device further includes a first circuit, a second circuit and a switching circuit. The first circuit supplies a voltage or a current to the transparent counter electrode for display purposes. The second circuit detects currents flowing from a number of points on the transparent counter electrode. And the switching circuit selectively connects electrically one of the first and second circuits to the transparent counter electrode.Type: GrantFiled: August 31, 2011Date of Patent: March 12, 2013Assignee: Sharp Kabushiki KaishaInventors: Saburo Miyamoto, Toshihisa Nakano
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Patent number: 8395604Abstract: When a resistance load inverter is used to control lighting/non-lighting of a pixel, in accordance with characteristic variations of a transistor forming the resistance load inverter, variations occur in light emission of each pixel. As an inverter in a pixel, an N channel transistor and a P channel transistor are used to apply a CMOS inverter. Even when characteristics of the transistor forming the CMOS inverter vary and inverter transfer characteristics vary, there is little effect on controlling lighting/non-lighting of the pixel, therefore, light emission variations of each pixel can be eliminated. Further, a signal potential of a scan line is used as one power source of a potential of the inverter, therefore, an aperture ratio of the pixel can be increased.Type: GrantFiled: December 16, 2009Date of Patent: March 12, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hajime Kimura
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Patent number: 8373622Abstract: The present method is to drive a plasma display panel which displays a frame composed of a plurality of sub-fields having different weights of luminance. The method comprises using plural kinds of application voltage waveforms different in light emission luminance, as pulse voltages for sustain discharges in display of each sub-field, and adjusting the number of waves in each of the plural kinds of application voltage waveforms according to the weight of luminance set for each sub-field, thereby performing gradation display.Type: GrantFiled: January 19, 2012Date of Patent: February 12, 2013Assignee: Hitachi Plasma Patent Licensing Co., Ltd.Inventors: Kazushige Takagi, Tadayoshi Kosaka
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Patent number: 8363047Abstract: A display device includes a dynamic ratioless shift register which is operated in a stable manner and can expand the degree of freedom of design. In the dynamic ratioless shift register which is provided with thin film transistors having semiconductor layers made of p-Si on a substrate surface, a node which becomes the floating state is connected to a fixed potential through a capacitance element.Type: GrantFiled: April 2, 2012Date of Patent: January 29, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Toshio Miyazawa, Iwao Takemoto, Atsushi Hasegawa, Masashiro Maki, Kazutaka Goto
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Patent number: 8358283Abstract: An input device for a computer or other programmable device translates the proximity of an object to one or more antennae into an electronic signal. The antennae generate a first frequency and a second frequency. When an object, such as a hand, is placed in proximity to the antenna, the object causes the first and second frequencies to heterodyne, which creates a third frequency, also referred to as a beat frequency or pulse frequency. A receiver interprets the pulse frequency and translates it into an electronic signal that can be used to command a computer or other programmable device.Type: GrantFiled: June 30, 2011Date of Patent: January 22, 2013Inventor: Chauncy Godwin
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Patent number: 8344980Abstract: A multiplexed pixel display includes a plurality of pixel electrodes, a plurality of storage elements, a first voltage supply terminal, a second voltage supply terminal, a common electrode, and a plurality of multiplexers each selectively coupling an associated one of the pixel electrodes with one of the first voltage supply terminal and the second voltage supply terminal responsive to a value of a data bit stored in an associated one of said storage elements. A controller is configured to sequentially write each bit of multi-bit data words to the storage elements, and assert, while each bit is stored in the storage elements, a first predetermined voltage on the first voltage supply terminal, a second predetermined voltage on the second voltage supply terminal, and a third predetermined voltage on the common electrode, for a time dependent on the significance of the stored bit. Various alternate controllers facilitate the use of additional driving schemes.Type: GrantFiled: May 23, 2008Date of Patent: January 1, 2013Assignee: OmniVision Technologies, Inc.Inventors: William Spencer Worley, III, Edwin Lyle Hudson, Wing Hong Chow
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Patent number: 8334828Abstract: A circuit for amplifying a display signal transmitted to a repair line by using a non-inverting amplifier is disclosed, which comprises a voltage follower, a non-inverting amplifier, a repair line, a thin film transistor (TFT) and a liquid crystal (LC) capacitor. The voltage follower is electrically connected to a data driver chip to thereby provide a display signal to the non-inverting amplifier. The non-inverting amplifier amplifies the display signal to thus obtain an amplified display signal, and transmits the amplified display signal to the TFT and the LC capacitor through the repair line. The amplified display signal is kept at a desired voltage level when the LC capacitor receives the amplified display signal.Type: GrantFiled: July 14, 2011Date of Patent: December 18, 2012Assignee: Au Optronics Corp.Inventors: Feng-Shou Lin, Kuan-Yu Chen, Kuo-Liang Shen, Chien-Yu Yi
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Patent number: 8284162Abstract: A manual pointing device for a computer system, the device having at least one key that can be actuated manually by a user, a click-event detection module coupled to the key to detect actuation thereof on first, second, and third detection axes via an inertial sensing circuit elastically coupled to a casing with a board, the inertial-sensor circuit structured to be carried on the board so as to oscillate and to rotate about the second detection axis.Type: GrantFiled: July 5, 2011Date of Patent: October 9, 2012Assignee: STMicroelectronics S.r.l.Inventors: Gianluca Pedrazzini, Enrico Chiesa, Fabio Pasolini
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Patent number: 8274491Abstract: Various embodiments of readout circuits are disclosed where no touchscreen or touch panel recharge is required, and the amount of time available for signal acquisition is twice that relative to prior art touchscreen or touch panel readout circuits. Voltage offsets of the integrating amplifiers may be compensated for by notch filtering signals stored in readout circuit capacitors. Some embodiments of readout circuits disclosed herein permit large dynamic range capacitive touchscreen or touch panel signals to be processed, and do not require panel reset. Readout circuits are disclosed that permit doubling of the signal acquisition rate and pre-filtering of acquired touch panel signals for improved immunity from harmonic EMI. Signal acquisition and temporary storage may be carried out using the same capacitors in such readout circuits.Type: GrantFiled: December 1, 2010Date of Patent: September 25, 2012Assignee: PixArt Imaging Inc.Inventor: Vitali Souchkov
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Patent number: 8253702Abstract: In a position detecting apparatus, electric power of a position pointer is turned on only when the position pointer is put within a particular range from a tablet to minimize consumption of a battery disposed in the position pointer. When the position pointer is brought close to the tablet, a control signal transmitted from the tablet is detected by a resonant circuit of the position pointer, and MOSFETs serving as a power switch are turned on by the detected signal. In response, electric power is supplied from a battery via the MOSFETs to circuit elements of the position pointer, and thus an operation of the position pointer starts.Type: GrantFiled: January 5, 2009Date of Patent: August 28, 2012Assignee: Wacom Co., Ltd.Inventors: Yuji Katsurahira, Sadao Yamamoto
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Patent number: 8243104Abstract: An image display device and an image display method are provided so as to suppress consumption power and provide a more brightly colored display image. The image display device is provided with a light modulating means wherein image data is inputted and an image is formed by modulating light from a light source based on the image data. The image display device is also provided with a color information detecting means for detecting a quantity of a chromatic color component of an image expressed by the image data; a light source control data generating means for generating light source control data for controlling brightness of the light source; and a light source control means for controlling the brightness of the light source based on the light source control data.Type: GrantFiled: August 8, 2005Date of Patent: August 14, 2012Assignee: Mitsubishi Electric CorporationInventors: Jun Someya, Shuichi Kagawa, Hideki Yoshii, Hiroaki Sugiura
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Patent number: 8228280Abstract: A reception interface circuit receives a luminance signal for each of multiple colors and a clock signal as input signals. A timing control unit receives the luminance signals received by the reception interface circuit, and controls the timing and format thereof such that they match drivers. A transmission interface circuit transmits the signals generated by the timing controller IC to the drivers. The timing controller IC is included within a rectangular package as a built-in component. The reception interface circuit is arranged on a first short side of the package. The transmission interface circuit is arranged on a second short side of the package. The image data is input via input terminals arranged on the first short side. The output signals of the transmission interface circuit are output via output terminals arranged on the second short side.Type: GrantFiled: October 6, 2009Date of Patent: July 24, 2012Assignee: Rohm Co., Ltd.Inventors: Hirotoshi Usui, Seiji Tokumasu
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Patent number: 8228291Abstract: An image display medium comprises a display member, a back substrate, spacers having a cell structure held between the substrates, and first particles and second particles, whose colors and charging polarities are different from one another, enclosed between the display member and back substrate. The display member includes a transparent support base, a transparent electrode formed thereon, a transparent dielectric layer formed on the transparent electrode, filters formed on the opposite side from the transparent electrodes side of the support base, and a protective layer formed thereon.Type: GrantFiled: July 15, 2009Date of Patent: July 24, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiro Yamaguchi, Kiyoshi Shigehiro, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga
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Patent number: 8223137Abstract: An liquid crystal display (LCD) device includes an LCD panel provided with a plurality of pixels, wherein the pixels are defined by a plurality of gate and data lines formed perpendicularly, an auxiliary storage capacitor formed in each of the pixels, a gate driver to drive the gate lines in sequence by supplying a scan pulse voltage to the gate lines of the LCD panel, wherein the scan pulse voltage is comprised of a high gate voltage and a low gate voltage, and a discharger to supply a pulse voltage to the gate line based on a source voltage for operating the LCD panel, wherein the discharger enables the auxiliary storage capacitor to be discharged to the ground voltage as the voltage of the gate line approaches the ground voltage.Type: GrantFiled: December 14, 2006Date of Patent: July 17, 2012Assignee: LG Display Co., Ltd.Inventor: Young Gi Hong
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Patent number: 8217970Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.Type: GrantFiled: January 26, 2007Date of Patent: July 10, 2012Assignee: Dolby Laboratories Licensing CorporationInventors: Lorne A. Whitehead, Helge Seetzen, Gregory John Ward, Wolfgang Heidrich
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Patent number: 8217969Abstract: A display device and a display controlling module are provided. The display controlling module includes a data analyzing unit, an interference data storage unit and a data adjustment unit. The data analyzing unit receives a plurality of display data of a corresponding frame, analyzes the display data to obtain a plurality of grayscale distributions of the corresponding display regions of a display panel and generates a backlight signal for adjusting a brightness of each of a plurality of light emitting groups of a backlight module according to the grayscale distributions. The interference data storage unit outputs a plurality of interferences of the corresponding display data according to the backlight controlling signal. The data adjustment unit receives the display data and the interferences and correspondingly adjusts grayscales of the display data according to the interferences.Type: GrantFiled: November 16, 2010Date of Patent: July 10, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan
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Patent number: 8212772Abstract: An interface device and method providing haptic sensations to a user. A user physically contacts a housing of the interface device, and a sensor device detects the manipulation of the interface device by the user. An actuator assembly includes an actuator that provides output forces to the user as haptic sensations. In one embodiment, the actuator outputs a rotary force, and a flexure coupled to the actuator moves an inertial mass and/or a contact member. The flexure can be a unitary member that includes flex joints allowing a portion of the flexure to be linearly moved. The flexure can converts rotary force output by the actuator to linear motion, where the linear motion causes a force that is transmitted to the user. In another embodiment, the actuator outputs a force, and a mechanism coupling the actuator to the device housing uses the force to move the actuator with respect to the device housing.Type: GrantFiled: October 6, 2008Date of Patent: July 3, 2012Assignee: Immersion CorporationInventor: Erik J. Shahoian
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Patent number: RE43564Abstract: A mobile phone has a display with a touch screen. The device has a browser and is capable of retrieving a Web page from the Internet. The page is first displayed in its entirety. The user can recognize the page's general lay-out and presence of hyperlinks. When the user touches a particular location on the touch screen that corresponds to a portion of the page's image, the portion gets displayed so as to fill the display's area. Thus, the user can browse the Web with a display of limited size.Type: GrantFiled: December 29, 2010Date of Patent: August 7, 2012Assignee: Koninklijke Philips Electronics N.V.Inventor: Jan Van Ee
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Patent number: RE43785Abstract: A thin film transistor array panel is provided, which includes: an insulating substrate; a first signal wire formed on the insulating substrate; a second signal wire formed on the insulating substrate and intersecting the first signal wire in an insulating manner; first and second pixel electrodes formed in a pixel area defined by the intersections of the first and the second signal wires and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; and a first thin film transistor connected to the direction control electrode, the first signal wire, and the second signal wire.Type: GrantFiled: September 23, 2010Date of Patent: November 6, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hee-Seob Kim, Kyong-Ju Shin, Jong-Lae Kim, Young-Chol Yang, Sung-Kyu Hong
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Patent number: RE44086Abstract: To provide an electro-optical device and an electronic apparatus capable of maintaining the display quality by preventing brightness unevenness without widening a frame in a mounting terminal portion connection portions connecting to a fourth power source bus line are provided in two places. Driving current is supplied from the connection portions to the fourth power source bus line. The width of the fourth power source bus line is smaller than that of the width of a power source bus line supplying driving current from one place of the mounting terminal portion.Type: GrantFiled: April 8, 2010Date of Patent: March 19, 2013Assignee: Seiko Epson CorporationInventor: Hiroshi Hirayama