Patents Examined by Dennis-Doon Chow
  • Patent number: 7256757
    Abstract: An organic EL display panel includes a substrate, pixel electrodes, a common electrode, signal lines, power supply lines, thin-film transistors, scan lines, organic EL elements and storage capacitors. To obtain a full color image by light emissions of the organic EL elements, red, green and blue emitters are patterned correspondently with the pixel electrodes and arranged in this order along the gate line direction. The emitters are patterned such that each pair of the red, green and blue emitters which are adjacent to each other along the gate line direction overlap each other to define a light-emitting layer overlap region, where colors of light components which exit the organic EL elements and pass through the emitters are mixed, between the adjacent organic EL elements arranged along the gate line direction. At least one of the thin-film transistor and the storage capacitor is arranged in the light-emitting layer overlap region.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: August 14, 2007
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Yutaka Nanno, Hiroshi Tsutsu
  • Patent number: 7253814
    Abstract: Disclosed is an apparatus and method for driving a plurality of displays in a computer system. The apparatus can include a checking circuit for checking inherent control information of the displays, and an output circuit for confirming a brightness control information corresponding to the inherent control information of the checked display among preset brightness control information to output an information to control the display at a brightness of the corresponding display. A conversion circuit can supply an information to drive a corresponding display based on the output information of the output circuit.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: August 7, 2007
    Assignee: LG Electronics Inc.
    Inventors: Se Hwan Kim, Jong Hyun Woo
  • Patent number: 7248236
    Abstract: An organic light emitting diode (OLED) display includes at least one shield electrode between a cathode layer and an OLED drive circuit. The OLED drive circuit has at least one thin-film transistor (TFT), and the shield electrode is disposed to correspond to the thin-film transistor and closer to the cathode layer, covering an entire region between the source and drain of the thin-film transistor. The shield electrode is either grounded or tied to the gate of the thin-film transistor, to thereby minimize parasitic capacitances in the pixels of the display to enhance the display performance. The presented architecture enables high density drive circuit integration in amorphous silicon or other technologies, yet preserving a high display aperture ratio.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: July 24, 2007
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Peyman Servati, Karim S. Karim
  • Patent number: 7242398
    Abstract: A flexible display device (10) is disclosed. The flexible display device comprises a flexible substrate (12), a number of display pixels (14) arranged in a form of rows and columns on the surface of the substrate, a number of grooves (16) in the surface of the substrate each of which is formed in between adjacent two rows or columns of the display pixels (14), and connection lines (18) for electrically interconnecting the plurality of display pixels (14), thereby providing flexibility to the display device and, at the same time, minimizing the propagation of mechanical stress caused when the display device is bent or rolled. A method of manufacturing the display device is also disclosed.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: July 10, 2007
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Denis Striakhilev
  • Patent number: 7239299
    Abstract: A driving circuit of a liquid crystal display device includes a substrate, at least two driver integrated circuit (IC) chips located on the substrate, and an impedance device electrically connected between the two driver IC chips for reducing a difference between respective input voltages being input into the two driver IC chips.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: July 3, 2007
    Assignee: Chi Mei Optoelectronics Corporation
    Inventors: Yuan-Liang Wu, Hsin-Ta Lee, Wen-Chieh Lin
  • Patent number: 7224334
    Abstract: An apparatus for providing a driving signal to an organic light emitting diode in an image display device includes gate lines for transferring previous and current gate signals, respectively, in a sequential process for providing the driving signal to the organic light emitting diode, a data line for transferring a data signal for displaying images on the image display device, a first switching transistor including a conduction path for transferring the data signal from the data line in response to the current gate signal; a second switching transistor including a conduction path for transferring a reference signal externally supplied in response to the previous gate signal, a third switching transistor including a conduction path for transferring the data signal provided from the first switching transistor in response to a state of the second switching transistor, and a fourth switching transistor including a conduction path for receiving a bias voltage and generating the driving signal to the organic light
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: May 29, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, Chong-Chul Chai, Beohm-Rock Choi
  • Patent number: 7221361
    Abstract: The present invention relates to a display apparatus that is switched to an image signal via a wireless communication unit automatically when an image signal cable is disconnected from a connector. The image signal is transmitted by a cable 6 connected to the connector C1 of the apparatus D1 or a wireless LAN. When a switch S1 detects that the cable 6 is connected to the connector C1, a switching circuit 2 is switched to the cable-side to display the image signal via the cable. When the switch S1 detects disconnection of the cable 6, the switch circuit is switched to the side of a CPU 5 to display the image signal via the wireless LAN.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: May 22, 2007
    Assignee: Fujitsu Limited
    Inventor: Isao Konishi
  • Patent number: 7218293
    Abstract: When the ambient temperature of an organic electroluminescent display device is a low temperature, a capacitive charge driving method is performed to supply a constant current to a column electrode after performing capacitance charge and then apply a constant voltage to the column electrode to turn off a pixel; and when the ambient temperature is room temperature or a high temperature, an electric charge control driving method is performed to supply a constant current to the data electrode and then place the column electrode in a high impedance state. In the electric charge control driving method, a driving section is set in a selection period so as to be shorter than the selection period, and the amount of electric charges supplied to the pixel in the driving section is controlled depending on a required luminance.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: May 15, 2007
    Assignee: OPTREX Corporation
    Inventor: Naoki Kato
  • Patent number: 7218312
    Abstract: An information display device includes a display with a display screen, a multifunction switch, an IR sensor detecting whether or not an operator's hand is in a range around the multifunction switch, and a menu display controller. The menu display controller causes, based on a sensor signal from the IR sensor, a main menu to be displayed on the display screen when an operator's hand comes in the range. When the operator's hand is taken off the multifunction switch, the menu non-display window is displayed on the display screen after a time-out time has passed.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: May 15, 2007
    Assignee: Calsonic Kansei Corporation
    Inventor: Norio Takaku
  • Patent number: 7212184
    Abstract: In a shift register provided with flip-flops that operate in synchronism with a clock signal, and a switching means, which is opened and closed in response to an output of the preceding stage of each of the flip-flops, is installed. The clock signal is selectively inputted by the switching means, and the selected clock signal is inverted and used as a shift register output from each of the stages. Moreover, two kinds of clock signals, each of which has a duty ratio of not more than 50% and which have no overlapped portions in their low-level periods, are used so as to prevent the outputs of the shift-register from overlapping each other. Thus, it is possible to provide a shift register which is preferably used for a driving circuit of an image display device, can miniaturize the driving circuit, and can desirably change the pulse width of the output signal, and also to provide an image display device using such a shift register.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: May 1, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hajime Washio, Yasushi Kubota, Kazuhiro Maeda, Yasuyoshi Kaise, Michael James Brownlow, Graham Andrew Cairns
  • Patent number: 7209098
    Abstract: When aging is performed by applying aging voltage to a data electrode, a scan electrode, and a sustain electrode via respective inductors (301, 401, 302, 402, 303, 403) coupled to the electrodes, frequency of a ringing waveform included in an aging voltage waveform applied to the data electrode is set in a range of ½ to 2 times frequency of a ringing waveform included in an aging voltage waveform applied to the scan electrode. With the method above, the time required for aging is significantly shortened, and the aging with high efficiency in electric power is realized. Instead of using inductors (301, 302, 303) including a coil, controlling the length of lead wires (401, 402, 403) can also obtain desired inductance.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: April 24, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaaki Yamauchi, Takashi Aoki, Koji Akiyama
  • Patent number: 7202840
    Abstract: In a selection period for applying a selection voltage to a scanning strip, a high impedance section for placing a data strip in a high impedance state is provided after a constant current section for supplying a constant current to a data strip from a constant current circuit. An organic electroluminescent element to be used has a small voltage-dependency in luminous efficiencies. When performing grayshade display by PWM, a data strip is supplied with an amount of electric charges from the constant current circuit in the constant current section, the amount of electric charges being calculated by adding an amount of residual electric charges in pixels to an amount of electric charges corresponding to luminance required for respective gray scale levels, the amount of residual electric charges being found based on an estimated potential at the data strip at end of the high impedance section.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: April 10, 2007
    Assignee: OPTREX Corporation
    Inventor: Naoki Kato
  • Patent number: 7199770
    Abstract: An apparatus for driving a light-emitting display controls the light-emission of light-emitting elements in such a manner that a driving current or driving voltage having a prescribed value to be supplied to the light-emitting elements is turned on or off by an on/off signal from a driving unit. The driving apparatus includes a pixel read section for reading the luminance values for the light-emitting elements in a frame period from an image signal and a ?? modulator which operates in a sub-frame period which is 1/n of the frame period according to the luminance values read by the pixel read section. The output of “1” or “0” from ?? modulator is served as the on/off signal. The driving apparatus can further includes a random data generator for providing random luminance values for the individual pixels.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: April 3, 2007
    Assignee: Pioneer Corporation
    Inventor: Yoshiyuki Okuda
  • Patent number: 7193614
    Abstract: A portable computing device includes pivoting and hinging mechanisms which enable its housing to reconfigure to function in multiple modes. In one configuration the device functions as a laptop computer with keyboard input. In another configuration the device folds into a compact, hand-held, pen-based computer. In another configuration the device folds around the display for protection during transport. A set of adjustable stops enable easy and repeatable transitions between the different configurations.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: March 20, 2007
    Inventor: Edward Bullister
  • Patent number: 7180490
    Abstract: A liquid crystal display apparatus includes a substrate and a second substrate with a liquid crystal layer sandwiched therebetween. A plurality of pixels are sandwiched between the two substrates and form a display section, each of the pixels is provided with first and second pixel electrodes both corresponding to the pixel, and a common electrode corresponding to the first and second pixel electrodes.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: February 20, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuya Aoyama, Shinichi Komura, Yuka Utsumi
  • Patent number: 7180530
    Abstract: A method and system for automatically testing visual displays and automatically optimizing the voltage settings for each visual display being tested by harmonizing and tailoring the voltage settings applied to the display and automatically setting into memory the coefficients to achieve the optimized voltage levels for each visual display.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: February 20, 2007
    Inventors: Amy Whittington, William Dunn
  • Patent number: 7176922
    Abstract: An information processing apparatus is comprised of a data input device for inputting informations, a memory for storing the informations input by the data input device, a processor for processing the informations in a form of a plurality of pages, a displaying device for displaying the informations formed in a unit of the pages, a device for registering image data in respect of owner name input by the data input device, a device for judging whether or not a predetermined process is done at one of the pages, and a device for storing the image data at a predetermined position of the one of the pages by a judged result of the judging device, wherein when the one of the pages is displayed, the stored image data is displayed with the informations.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: February 13, 2007
    Assignee: Sony Corporation
    Inventor: Tomoshi Hirayama
  • Patent number: 7176872
    Abstract: A display controller is provided which can control the display of a fast moving image with higher quality in an active matrix display apparatus DD. When the display pattern of an image is controlled in a display apparatus DD constituted of a plurality of pixels S arranged in a matrix form, the pixel including a light-emitting device, an image is displayed by driving the pixels S only for predetermined illuminating period shorter than a vertical synchronizing period.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: February 13, 2007
    Assignees: Pioneer Corporaion, Pioneer Micro Technology Corporation
    Inventor: Shinji Kuriki
  • Patent number: 7173610
    Abstract: A decoding system which is arranged to perform a plural-stage process in determining which of the driver lines to stimulate in response to each electrode address value supplied to the decoder. This enables the network configuration of the impedances to be machine generated, and also enables the decoder to calculate on the fly which driver lines to stimulate in response to each address value. Furthermore, different resolutions may be provided to enable groups of the electrodes to be addressed simultaneously. Such a decoder arrangement may also be used with an electrode arrangement in which each electrode is connected to only two of the driver lines, in order to achieve addressing schemes in which up to t consecutive electrodes can be driven simultaneously. The invention is applicable, for example, to liquid crystal displays, arrays of memory elements and arrays of sensors such as light-sensors.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: February 6, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Kenneth Graham Paterson
  • Patent number: 7173600
    Abstract: To supply selection signals to multiplexed pixels efficiently. For a period from time t0 to time t2, first, during a period from time t0 to time t1, a pixel electrode A11 is driven by selecting scan lines Gn+1 and Gn+2, and next, during a period from time t1 to time t2, a pixel electrode B11 is driven by selecting only the scan line Gn+1. Moreover, during the period from time t1 to time t2, scan lines Gn+3 and Gn+4 are also selected, and thus a pixel electrode A12 is driven. After time t2, at least one of the scan lines Gn+3 and Gn+4 is not selected before the pixel electrode A12 is driven by selecting both of the scan lines Gn+3 and Gn+4 during a period from time t4 to time t5. Accordingly, the pixel electrode A12 can be preliminarily charged during the period from time t1 to time t2 and can maintain a potential preliminarily applied thereto until the pixel electrode A12 is driven during the period from time t4 to time t5.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: February 6, 2007
    Assignee: International Business Machines Corporation
    Inventors: Manabu Kodate, Eisuke Kanzaki