Display Element Selection Circuitry Patents (Class 345/51)
  • Patent number: 11756500
    Abstract: An integrated circuit device includes a drive circuit that outputs a first drive waveform signal for dot matrix display and a second drive waveform signal for segment display, a first output terminal, a second output terminal, and a control circuit that controls the drive circuit. The drive circuit outputs the first drive waveform signal to the first output terminal when its terminal is set as the output terminal for dot matrix display, and outputs the second drive waveform signal to the first output terminal when its terminal is set as the output terminal for segment display. The drive circuit outputs the first drive waveform signal to the second output terminal when its terminal is set as the output terminal for dot matrix display, and outputs the second drive waveform signal to the second output terminal when its terminal is set as the output terminal for segment display.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: September 12, 2023
    Inventor: Tadashi Yasue
  • Patent number: 10783071
    Abstract: A data storage device with a non-volatile memory on which a garbage collection operation is segmented to be accomplished at separate time intervals. Host commands are inserted to be executed between the separate time intervals. A data swap stage or/and an F2H table update stage or/and an H2F table update stage for a garbage collection operation may be segmented to be performed at separate time intervals.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: September 22, 2020
    Assignee: Silicon Motion, Inc.
    Inventors: Ting-Hsing Wang, Yang-Chih Shen
  • Patent number: 10777111
    Abstract: A plurality of pixel formation portions in an image display portion are grouped so that K pixel formation portions form each pixel group, where K is an integer of two or more. The K pixel formation portions forming each of the pixel groups are connected to the same source bus line. Each of the pixel formation portions is provided with a connection control transistor configured to control an electrical connection state between the corresponding source bus line and a pixel electrode. The K connection control transistors included in the K pixel formation portions forming each of the pixel groups become an On state in periods different from one another. A source driver applies a video signal to each of the source bus lines in a time division manner in each horizontal scanning period.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yohei Takeuchi, Takuya Watanabe, Akira Tagawa, Yasuaki Iwase, Takatsugu Kusumi
  • Patent number: 10288976
    Abstract: A light control film includes two transparent electroconductive resin substrates each having a transparent electroconductive film and a transparent resin substrate and a light control layer sandwiched between the transparent electroconductive film sides of the two transparent electroconductive resin substrates. The transparent electroconductive film of one transparent electroconductive resin substrate having a primer layer is cut through a cutting line to have a shape of a picture or character, and the cutting line is in a form that a start point for the cutting and an end point for the cutting make a closed region. The closed region of the picture of character is electrically insulated from the transparent electroconductive film around the shape of the picture or character. The light control film enables to improve adhesiveness between film matrix and substrates and to provide stable control function.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: May 14, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Satoyuki Nomura, Yoshii Morishita, Tooru Tanaka
  • Patent number: 10235931
    Abstract: A main input interface receives input image data. Memory stores multiple segment data that specify the on/off states of the multiple respective segments that form a segment character on an image frame. A sub input interface receives sub data that specifies the segment character to be displayed. A segment decoder converts the segment character into a raster image based on the sub data and the multiple segment data. An image processing circuit generates output image data to be displayed on a display panel, based on at least one of the input image data and the output data of the segment decoder.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: March 19, 2019
    Assignee: ROHM CO., LTD.
    Inventor: Hiroharu Endo
  • Patent number: 9958677
    Abstract: A head-up display that allows an observer to visually recognize a virtual image in a viewpoint region of the observer is provided. The head-up display includes: a display device that has a display surface and displays an image on the display surface; and a first optical system that has a concave mirror, and a lens condensing the light and disposed between the concave mirror and the display surface. The first optical system causes a beam exiting from the display surface to form an intermediate image via the lens and the concave mirror, the intermediate image being enlarged from the image displayed on the display surface.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 1, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Kuzuhara, Hiroaki Okayama
  • Patent number: 9950186
    Abstract: According to one aspect, a display device may include: a display unit including a plurality of pixels; and a controller arranged to receive an image signal comprising a plurality of image frames and then, if certain of the image frames are determined to represent a still image, to insert a sub-image frame between immediately successive image frames of the certain of the image frames, the sub-image frame allowing at least one of the plurality of pixels to emit light of a specified wavelength.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: April 24, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kwang Jun Kim, Hwang Keun Kim, Yong-Han Park, Jong Sung Bae, Dong Ho Lee, Young-Cheol Jeong
  • Patent number: 9678593
    Abstract: A GOA (Gate On Array) circuit applied to a liquid crystal display device is disclosed. The liquid crystal display device has a plurality of scan lines. The GOA circuit has a plurality of cascaded GOA units. An (N)th level GOA unit is controlled to charge an (N)th level scanning line accordingly. The (N)th level GOA unit includes a signal transfer circuit, an inverting amplifier circuit, a signal reset circuit, and an inverting logistic circuit. Processing a first screen scanning procedure, the GOA circuit will forward scan from the 1st level GOA unit to the (N)th level GOA unit, while the GOA circuit receives a touch signal, the GOA circuit enters into a touch point scanning procedure, then entering into a second screen scanning procedure. This improves the format of touch scanning and increases the report rate of the touch panel to improve the sensitivity of the touch panel.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: June 13, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO.
    Inventor: Juncheng Xiao
  • Patent number: 9538166
    Abstract: An apparatus for measuring a depth of a 3D image includes a display panel unit which produces a 3D image by displaying a left-eye and a right-eye image, a depth measurement unit which measures projecting distances or recessed distances of the 3D image and a real object, a parallax measurement unit which measures a distance between pupils of an experimenter based on the projecting distances or recessed distances of the 3D image and the real objects, and a depth value calculation unit which calculates an average value of the projecting distances or recessed distances of the real object with respect to a plurality of experimenters measured when a change in distance between pupils is the same as a change in distance between pupils measured by adjusting the projecting distance or recessed distance of the 3D image, and determines the calculated average value as a depth value of the 3D image.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: January 3, 2017
    Assignee: SK PLANET CO., LTD.
    Inventors: Tae Ho Yu, Joo Hyoung Kim
  • Patent number: 9332247
    Abstract: Provided is a technique that can reduce the fatigue of the eyes of an observer who observes a stereoscopic image. To attains this object, an image processing apparatus includes: a first acquisition section that obtains a base image; a second acquisition section that obtains pieces of base distance information an identification section that performs an identification process for, classifying an image space into a gaze area and a non-gaze area; a first generation section that performs a generation process for generating a derived image and pieces of derived distance information, the derived image and the pieces of derived distance information being obtained as a result of a blurring process being performed on an image in an area corresponding to the non-gaze area; and a second generation section that generates a pseudo image of the object based on the derived image and the pieces of derived distance information.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: May 3, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventor: Hiroshi Yamato
  • Patent number: 8963821
    Abstract: A scan driving device includes: a first node transmitted with a clock signal input to a first clock signal input terminal; a second node transmitted with an input signal according to a clock signal input to a second clock signal input terminal; a first transistor transmitting a power source voltage to an output terminal according to a voltage of the first node; a second transistor formed to transmit the clock signal input to the third clock signal input terminal to the output terminal according to the voltage of the second node; and a dummy transistor formed to transmit the clock signal input to the third clock signal input terminal to the output terminal according to the voltage of the second node. One of the second transistor and the dummy transistor is cut off.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Guang-Hai Jin, Dong-Gyu Kim, Kwan-Wook Jung, Kyong-Hun Cho, Moo-Jin Kim
  • Patent number: 8941578
    Abstract: In conventional liquid crystal display controllers, the display is reduced in the stand-by state but the liquid crystal display duty is not changed, i.e., even the common electrodes of the rows that are not producing display are scanned, and the consumption of electric power is not decreased to a sufficient degree in the stand-by state. A liquid crystal display controller includes a drive duty selection register capable of being rewritten by a microprocessor, and a drive bias selection register. When the display is changed from the whole display on a liquid crystal display panel to a partial display on part of the rows only, the preset values of the drive duty selection register and of the drive bias selection register are changed, so that the display is selectively produced on a portion of the liquid crystal display panel at a low voltage with a low-duty drive.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: January 27, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshikazu Yokota, Kunihiko Tani, Gorou Sakamaki, Katsuhiko Yamamoto, Takashi Yoneoka, Kazuhisa Higuchi, Kimihiko Sugiyama
  • Patent number: 8926101
    Abstract: A system including a plurality of pixels disposed on a substrate forming a screen. A signal, such as an image, can be projected on the screen. The pixels of the screen include a sensor configured to sense a portion of the signal, an emitter, and circuitry. In response to information sensed in the signal, the circuitry can be configured to drive the emitter.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: January 6, 2015
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Rowan Nairn, Philipp Schmaelzle
  • Patent number: 8878759
    Abstract: A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: November 4, 2014
    Assignee: Cambridge Enterprise Limited
    Inventors: William Crossland, Neil Collings, Edward Buckley, Adrian Cable, Nicholas Lawrence, Peter Mash, Timothy Wilkinson
  • Patent number: 8773331
    Abstract: In certain implementations, a method consistent with certain embodiments involves associating a first headset with a first viewer profile; associating the first headset with a first audio channel within an audio channel multiplex and with a first set of display refresh time slots; selecting a first advertisement based on criteria contained in the first viewer profile; displaying a video portion of the first advertisement on a video display during the first set of refresh time slots associated with the first headset; transmitting a synchronization signal that is synchronized to a video frame refresh clock to establish the video time slots; and transmitting an audio portion of the first advertisement on the first audio channel associated with the headset. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: July 8, 2014
    Assignee: Sony Corporation
    Inventors: Frederick J. Zustak, Brant L. Candelore
  • Patent number: 8766881
    Abstract: The present invention allows an organic EL display device to perform display with high definition by reducing an area of each pixel forming a display region of the display device. A drive TFT for driving an organic EL element, a storage capacitance connected with a gate of the drive TFT, and a switching TFT connected to a scanning line are used in common by pixels arranged adjacent to each other in the lateral direction and hence, areas occupied by these circuit elements per one pixel can be reduced whereby the pixel can be made small. Further, a data line for supplying a video signal and a power source line for supplying an electric current to the organic EL elements can be used in common by the pixels arranged adjacent to each other and hence, the number of data lines and the number of power source lines can be halved thus reducing an area of the pixel. Due to such a constitution, the present invention acquires an organic EL display device capable of performing display with high definition.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: July 1, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masamitsu Furuie, Hajime Akimoto
  • Patent number: 8654048
    Abstract: A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: February 18, 2014
    Assignee: Cambridge Enterprise Limited
    Inventors: Neil Collings, Timothy Wilkinson, William Crossland, Edward Buckley, Adrian Cable, Nicholas Lawrence, Peter Mash
  • Patent number: 8648782
    Abstract: The display device includes a signal line and a pixel. The pixel includes a first switching element, a capacitor having a first electrode which is electrically connected to the signal line through the first switching element, a display element electrically connected to the first electrode of the capacitor, a second switching element, and an electric charge supply terminal electrically connected to a second electrode of the capacitor through the second switching element. A potential difference between a potential of the signal line and a potential of the electric charge supply line is applied to the capacitor. Voltage of the capacitor at the time of writing is set higher than that of the display element. Accordingly, drop in voltage held in the capacitor due to degradation of the first switching element is reduced, and desired voltage applied to the display element is maintained.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: February 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Tatsuya Honda
  • Patent number: 8552928
    Abstract: Discrete flexible pixel assemblies can be hermetically sealed from the environment and can comprise unitary, self-contained replaceable modules which enable efficient, economical production of large scale, free-form electronic displays, signs and lighting effects for outdoor use. The method and means for producing hermetically sealed discrete flexible pixel assemblies can include encapsulation means, exterior encasement means, and cable connector means.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: October 8, 2013
    Assignee: Daktronics, Inc.
    Inventors: Brett David Wendler, Eric Steven Bravek, Erich J. Grebel
  • Patent number: 8547320
    Abstract: In conventional liquid crystal display controllers, the display is reduced in the stand-by state but the liquid crystal display duty is not changed, i.e., even the common electrodes of the rows that are not producing display are scanned, and the consumption of electric power is not decreased to a sufficient degree in the stand-by state. A liquid crystal display controller includes a drive duty selection register capable of being rewritten by a microprocessor, and a drive bias selection register. When the display is changed from the whole display on a liquid crystal display panel to a partial display on part of the rows only, the preset values of the drive duty selection register and of the drive bias selection register are changed, so that the display is selectively produced on a portion of the liquid crystal display panel at a low voltage with a low-duty drive.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: October 1, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshikazu Yokota, Kunihiko Tani, Gorou Sakamaki, Katsuhiko Yamamoto, Takashi Yoneoka, Kazuhisa Higuchi, Kimihiko Sugiyama
  • Patent number: 8487901
    Abstract: The display device is provided with X electrodes XP and Y electrodes YP which cross with a first insulating layer in between and a number of Z electrodes which are electrically floating from each other with a second insulating layer in between. The Z electrodes are arranged so that each Z electrode overlaps both an adjacent X electrode and Y electrode. The pad portion of a first X electrode has such a form that the area is maximum in the vicinity of the fine wire portion of the first X electrode and the area is minimum in the vicinity of the fine wire portion of an adjacent second X electrode, and the area of the pad portion is smaller towards the direction in which the distance increases away from the vicinity of the fine wire portion of the first X electrode. A pulse signal is sequentially applied to one set of X electrodes or Y electrodes.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: July 16, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kouji Hayakawa, Koji Nagata, Norio Mamba, Toshiyuki Kumagai, Shinji Sekiguchi, Kouichi Anno, Tsutomu Furuhashi
  • Patent number: 8482501
    Abstract: A liquid crystal display device with controllable viewing angle of the present invention has an upper substrate (101) on which an upper substrate common electrode (103) is disposed, a lower substrate (102) on which a pixel electrode is disposed, and a liquid crystal layer (107) sandwiched between the upper substrate (101) and the lower substrate (102). The liquid crystal molecules are vertical to the upper substrate (101) in substance when no voltage is applied, and a plurality of parallel strip-like lower substrate common electrodes (104) are disposed on the lower substrate (102).
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: July 9, 2013
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Xuhui Peng, Zhihua Ling, Sitao Huo, Xinghua Nie
  • Patent number: 8427461
    Abstract: A display system, a source driving apparatus, and a method of black insertion are provided. The apparatus includes a data channel, a black-insertion-data line, a first and a second selector. In a first period, the first selector electrically connects the data channel to a first data line in a display panel, and the second selector electrically connects the black-insertion-data line to a second data line in the display panel. In a second period, the first selector electrically connects the data channel to the second data line, and the second selector electrically connects the black-insertion-data line to the first data line.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: April 23, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventor: Jr-Ching Lin
  • Patent number: 8384582
    Abstract: An active transponder for synthetic aperture radar systems includes a receiving antenna for receiving a first radiofrequency signal modulated according to a first train of one or more first pulses, separating means comprising two outputs outputting the first radiofrequency signal, second processing means connected to a first output of the separating means to generate a code synchronized with the first pulses, signal generating means connected to the second output and to the second processing means generate a second radiofrequency signal modulated by the code, and a transmitting antenna means to transmit the second radiofrequency signal to generate, for each one of the first pulses, a sequence of one or more second pulses, the code being synchronized with the second pulses.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: February 26, 2013
    Assignee: Space Engineering S.p.A.
    Inventors: Giuseppe Chiassarini, Giuseppe D'Angelo
  • Patent number: 8339341
    Abstract: This invention provides an image display system that includes an image display device having an overdrive processing circuit and allows reduction in memory cost as a whole. The image display system according to this invention includes an image generation device that generates image data, and an image display device that receives the image data from the image generation device, performs overdrive processing based on the received image data, and displays an image. The image generation device includes a rendering circuit that generates image data to be outputted to the image display device for every frame, a memory unit that holds the plural pieces of image data corresponding to at least two frames among the plural pieces of image data generated by the rendering circuit, and a transfer circuit that transfers the plural pieces of image data corresponding to two frames among the plural pieces of image data held by the memory unit to the image display device within one frame period.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: December 25, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuhiro Ishiguchi, Akimasa Yuuki
  • Patent number: 8212763
    Abstract: In conventional liquid crystal display controllers such as for portable telephone sets, the display is reduced in the stand-by state but the liquid crystal display duty is not changed, i.e., even the common electrodes of the rows that are not producing display are scanned, and the consumption of electric power is not decreased to a sufficient degree in the stand-by state. A liquid crystal display controller (2) includes a drive duty selection register (34) capable of being rewritten by a microprocessor (1), and a drive bias selection register (32). When the display is changed from the whole display on a liquid crystal display panel (3) to a partial display on part of the rows only, the preset values of the drive duty selection register and of the drive bias selection register are changed, so that the display is selectively produced on a portion of the liquid crystal display panel at a low voltage with a low-duty drive.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: July 3, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshikazu Yokota, Kunihiko Tani, Gorou Sakamaki, Katsuhiko Yamamoto, Takashi Yoneoka, Kazuhisa Higuchi, Kimihiko Sugiyama
  • Patent number: 7974347
    Abstract: A mechanism for automatically determining an optimal temporal interval for displaying data is provided. The mechanism receives information indicating a temporal range. The mechanism determines the size of a display area in which data corresponding to the temporal range is to be displayed. The mechanism further determines, based at least partially upon the size of the display area, how many data display elements can be displayed within the first display area. The mechanism then determines, based at least partially upon the temporal range and how many data display elements can be displayed within the display area, a temporal interval by which the temporal range is to be divided for purposes of displaying the data corresponding to the temporal range. Each data display element corresponds to a particular instance of temporal interval.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: July 5, 2011
    Assignee: Oracle America, Inc.
    Inventors: Stefan Yap, David Peh
  • Patent number: 7916133
    Abstract: A buffer circuit is driven with a low voltage and operates at a high speed has first and second comparators constituted by P channel and N channel MOS transistors provided between an input terminal and an output terminal of a buffer amplifier. A predetermined offset voltage is set for the comparing operation, and a switch circuit turns ON/OFF in response to an output signal from the first comparator and the output signal of the second comparator. A leading up of an output voltage from the buffer amplifier is accelerated by the current flowing from a power source line to the output terminal. The buffer circuit also includes an operation restricting circuit for restricting the comparing operation of the second comparator in a range of a dead band of the transistors.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: March 29, 2011
    Assignee: Rohm Co., Ltd.
    Inventor: Hiroyuki Inokuchi
  • Patent number: 7884370
    Abstract: A method for manufacturing an organic light emitting diode display includes disposing a crystalline semiconductor layer on a substrate, disposing a gate line, a driving input electrode, and a driving output electrode on the crystalline semiconductor layer, the gate line including a switching control electrode, patterning the crystalline semiconductor layer using the gate line, the driving input electrode, and the driving output electrode as a mask, disposing a gate insulating layer and an amorphous semiconductor layer on the gate line, the driving input electrode, and the driving output electrode, disposing a data line, a driving voltage line, a switching output electrode, and a driving control electrode on the amorphous semiconductor, the data line including a switching input electrode, disposing a pixel electrode connected to the driving output electrode, disposing a light emitting member on the pixel electrode, and disposing a common electrode on the light emitting member.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: February 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Moo Huh, Joon-Hoo Choi, Seung-Kyu Park, Byoung-Seong Jeong
  • Patent number: 7843404
    Abstract: The present invention provides a smart mirror apparatus using an LCD panel. The smart mirror of the present invention includes a reflective mirror, which is provided in the vehicle, and an LCD panel, which is placed in a light path between the reflective mirror and eyes of the driver and has one or two polarizing sheets. The smart mirror further includes an incident light detecting unit, which detects both the brightness of the incident light transmitted from the rear to the LCD panel and the brightness around the LCD panel, and calculates a difference value therebetween. The smart mirror further includes a voltage determination unit, which receives the calculated difference value and determines the drive voltage depending on the difference value, and a voltage apply and supply unit which applies the drive voltage, determined by the voltage determination unit, to the LCD panel.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: November 30, 2010
    Assignee: Sody
    Inventor: Jong Cheon Lee
  • Patent number: 7734108
    Abstract: The present invention provides an image processing circuit capable of properly determining whether or not image data is a static image or a moving image and performing overdrive processing thereon.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: June 8, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hisaharu Oura
  • Patent number: 7719514
    Abstract: The present invention is directed to a drive apparatus adapted for driving display panel of the active matrix type, which comprises first signal processing means (3), (5), (7) for converting a digital video signal of m (m is natural number) bits which has been converted into data arrangement in conformity with the display format by data arrangement converting means (2) into parallel analog video signals of p (p is natural number)-phase, second signal processing means (4), (6), (8) for developing the analog video signals of p-phase into analog video signals of x/k (k is natural number)-phase to deliver the analog video signals thus developed to the video signal supply lines, and signal line selecting means (14) for sequentially selecting, one by one, at the same timing, desired signal lines from respective groups of the x/k number of signal lines obtained by dividing x number of signal lines to perform sampling of analog video signals delivered via the x/k number of video signal supply lines with respect to th
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: May 18, 2010
    Assignee: Sony Corporation
    Inventor: Minoru Matsuura
  • Patent number: 7688303
    Abstract: In conventional liquid crystal display controllers such as for portable telephone sets, the display is reduced in the stand-by state but the liquid crystal display duty is not changed, i.e., even the common electrodes of the rows that are not producing display are scanned, and the consumption of electric power is not decreased to a sufficient degree in the stand-by state. A liquid crystal display controller (2) includes a drive duty selection register (34) capable of being rewritten by a microprocessor (1), and a drive bias selection register (32). When the display is changed from the whole display on a liquid crystal display panel (3) to a partial display on part of the rows only, the preset values of the drive duty selection register and of the drive bias selection register are changed, so that the display is selectively produced on a portion of the liquid crystal display panel at a low voltage with a low-duty drive.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: March 30, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yoshikazu Yokota, Kunihiko Tani, Gorou Sakamaki, Katsuhiko Yamamoto, Takashi Yoneoka, Kazuhisa Higuchi, Kimihiko Sugiyama
  • Patent number: 7663395
    Abstract: A display panel is provided, which includes: a plurality of gate lines; a plurality of data lines intersecting the gate lines; a plurality of switching elements connected to the gate lines and the data lines; a plurality of pixel electrodes connected to the switching elements; a plurality of driving signal lines transmitting a plurality of driving signals; a plurality of test pads for test signals disposed near an edge of the panel; and a gate driver generating and applying gate signals to the gate lines responsive to the driving signals transmitted from the driving signal lines.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: February 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Woong Chang, Dong-Gyu Kim
  • Patent number: 7646370
    Abstract: The level of a storage capacitor line changes between two types, an H level and an L level. As a result of this change, the voltage applied to a liquid crystal is shifted so that a sufficient voltage is applied to the liquid crystal to perform a display operation. Then, by changing the voltage value of the difference between a first level and a second level, the contrast and screen brightness are adjusted. Furthermore, the capacitances generated at the locations where the two storage capacitor lines and the data line intersect are set to be substantially the same.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: January 12, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Michiru Senda, Koji Hirosawa, Ryoichi Yokoyama
  • Patent number: 7616173
    Abstract: An electro-optical device with a pixel portion of enhanced definition is provided, which uses pixels having a novel structure so that the number of stages of a source signal line side driver circuit is reduced to half the number of pixels in the horizontal direction, thereby making a space for placing the driver circuit and increasing the aperture ratio. One horizontal period is divided into the former half and the latter half. Signals for two adjacent pixels are successively inputted to one source signal line. A pixel selecting portion is provided between the two adjacent pixels. The signal selecting portion selects one of the pixels in the former half of one horizontal period so that a signal is written in the pixel whereas it selects the other pixel during the latter half of the horizontal period so that a signal is written in the pixel. Since one source signal line is shared between two adjacent pixels, the invention is advantageous also in terms of aperture ratio.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: November 10, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yoshifumi Tanada
  • Patent number: 7570257
    Abstract: An element driving transistor controls an amount of power supplied from a power supply PVDD to an element to be driven (display element) provided in a pixel of each row. A storage capacitor has a first electrode connected to a gate electrode of an element driving transistor and a second electrode connected to a capacitor line. A voltage level of a capacitor control signal SCn to be output to the capacitor line is set to a voltage level which controls the element driving transistor via the storage capacitor Cs to be periodically switched off. A V driver formed at a periphery of a display portion of a panel has a generator which generates a capacitor control signal SCn using outputs of registers which sequentially transfer and output a signal according to a V start signal STV so that the off-control period of the element driving transistor is determined according to the H level period of the V start signal STV.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: August 4, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Kyoji Ikeda
  • Patent number: 7348942
    Abstract: To enhance the display characteristics of moving images and enhance the display quality in an electro-optical device using electro-optical elements that emit light with the brightness in accordance with a driving current, a pixel includes a driving transistor T4 for setting a driving current Ioled in accordance with data stored in a capacitor and an organic EL element OLED that emits light with the brightness in accordance with the driving current Ioled. During a period of time from the moment in which the scanning line corresponding to the pixel in which data is to be written to the moment in which the same scanning line is selected again, at least one of the electric potential of a first power supply line and the electric potential of a second power supply line is set to be variable and a forward bias and a reverse bias are alternately and repeatedly applied to the organic EL element OLED.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: March 25, 2008
    Assignee: Seiko Epson Corporation
    Inventor: Hiroaki Jo
  • Patent number: 7312775
    Abstract: A liquid crystal device having a display section provided with a plurality of X electrodes and a plurality of Y electrodes, a master X driver IC and a slave X driver IC for driving the X electrodes, and a Y driver for driving the Y electrodes. The master IC has a display control signal generation section which generates a display control signal based on a signal from an external MPU and an output terminal (or input/output terminal) which outputs the display control signal. Each of the master IC and slave IC has an input terminal for receiving the display control signal from the master IC through an external wiring. This liquid crystal device can eliminate a luminance difference within the display screen driven by the master IC and the slave IC.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: December 25, 2007
    Assignee: Seiko Epson Corporation
    Inventor: Hisanobu Ishiyama
  • Patent number: 7307599
    Abstract: A display apparatus includes a display unit, a time setting unit, a detection unit and an image changing unit. The display unit is configured to display a color image. The time setting unit is configured to set a time. The time to be set by the time setting unit can be changed by a user. The detection unit is configured to detect whether the time set by the time setting unit is passed. The image changing unit is configured to change a color image to be displayed on the display unit to a monochrome image so as to warn the user that the time set by the time setting unit is passed, if the detection unit detects that the time set by the time setting unit is passed.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: December 11, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Tamekuni, Akihiro Fujiwara, Tsuyoshi Morofuji
  • Patent number: 7286110
    Abstract: In conventional liquid crystal display controllers such as for portable telephone sets, the display is reduced in the stand-by state but the liquid crystal display duty is not changed, i.e., even the common electrodes of the rows that are not producing display are scanned, and the consumption of electric power is not decreased to a sufficient degree in the stand-by state. A liquid crystal display controller (2) includes a drive duty selection register (34) capable of being rewritten by a microprocessor (1), and a drive bias selection register (32). When the display is changed from the whole display on a liquid crystal display panel (3) to a partial display on part of the rows only, the preset values of the drive duty selection register and of the drive bias selection register are changed, so that the display is selectively produced on a portion of the liquid crystal display panel at a low voltage with a low-duty drive.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: October 23, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Yoshikazu Yokota, Kunihiko Tani, Gorou Sakamaki, Katsuhiko Yamamoto, Takashi Yoneoka, Kazuhisa Higuchi, Kimihiko Sugiyama
  • Patent number: 7268776
    Abstract: A liquid crystal display of compact size is disclosed. The liquid crystal display has a tape carrier package and a single integrated PCB for processing a gate driving signal and data driving signal. The tape carrier package includes a base substrate, a gate driver IC formed on said base substrate, an input pattern formed on said base substrate that applies gate driving signals input from an external device to the gate driver IC, a first output pattern formed on said base substrate that outputs a first gate driving signal processed in said gate driver IC, and a second output pattern formed on said base substrate, that outputs a second gate driving signal bypassing the gate driver IC among the gate driving signals.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: September 11, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Soo Kim, Choong-Seob Oh, Jin-Hyeok Park, Jin-Ho Park, Dong-Gyu Kim, Yong-Eun Park, Nam-Soo Kang, Gyu-Su Lee
  • Patent number: 7242380
    Abstract: A display apparatus having: a panel displaying a picture; a panel driver enabling the panel to display the picture; a scaler transferring an input image signal to the panel driver; a key input part generating a color change execution signal for the input image signal by manipulation of a user; and a controller modifying a voltage level value of the input image signal and transferring a modified input image signal to the scaler, if the input image signal transferred to the scaler is identical over a predetermined period of time, after receiving the color change execution signal from the key input part. As described, an embodiment of the present invention provides the display apparatus and the control method thereof providing the user with the information displayed on the screen and preventing screen modulation when identical display data are displayed on the screen over the predetermined period of the time.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: July 10, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yun-ju Hong
  • Patent number: 7239307
    Abstract: A driving circuit of a display to display full color by light emitting elements is provided which can attain sufficient display characteristics even when there is a difference in characteristics of the light emitting elements and can lower power consumption. The driving circuit is used for a stripe type display in which electrical characteristics of a red light emitting organic EL (Electroluninescence) element differ greatly from those of green and blue light emitting organic EL elements in which these three light emitting elements are arranged repeatedly in a column direction in a manner that the red light emitting element is sandwiched by the green and blue light emitting elements and the driving circuit is made up of driving sections each having driving capability enough to drive the red light emitting organic EL element and other driving sections each having driving capability enough to drive the green and blue light organic EL elements.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: July 3, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Atsushi Kota, Shingo Kawashima, Eitaro Nishigaki, Yuji Kondo
  • Patent number: 7193601
    Abstract: An active matrix LCD defines a display signal period and a reset period in each vertical scan period. The display signal period is a period to write and hold display signals in pixels in response to a row select pulse generated from an output pulse of a first shift register (SR1). The reset period is a period to write and hold a reset voltage in the pixels in response to a row select pulse generated from an output pulse of a second shift register (SR2). The ratio of the display signal period to the reset period is adjustable in units of horizontal scan time by changing the number ā€œnā€ of horizontal scan periods to be passed between the time when the first shift register receives a scan start signal (WT) and the time when the second shift register receives a scan start signal (Reset).
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: March 20, 2007
    Assignee: Victor Company of Japan, Limited
    Inventor: Masato Furuya
  • Patent number: 7119771
    Abstract: Disclosed herein is a liquid crystal display apparatus comprising: a liquid crystal display element composed of a liquid crystal layer and having a plurality of pixels arranged in a matrix pattern; and a driver for dividing one frame into plural fields and interlace-scanning the plurality of fields. In one embodiment, the driver is so structured to drive the respective fields composing one frame so that a scanning order of the fields is discontinued at least once. In another embodiment, the driver is so structured to drive scanning lines by means of a driving waveform having a reset period for resetting a state of liquid crystals, a selection period for selecting a final display state of the liquid crystals, and a maintaining period for establishing the state selected at the selection period, and starts scanning of next field based on reset period end timing of one scanning line of the previous field.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: October 10, 2006
    Assignee: Minolta Co., Ltd.
    Inventors: Shuji Yoneda, Naoki Masazumi
  • Patent number: 7116287
    Abstract: Apparatus for driving a cholesteric liquid crystal display wherein the display includes cholesteric liquid crystals having a first planar reflective state and a second transparent focal conic state, which is respectively responsive to different applied fields; an addressing structure having rows and columns of conductors arranged so that when a column and a row overlap, they define a selectable pixel or segment to be viewable or non-viewable; the apparatus being adapted to switch between a first and a second fixed voltage.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: October 3, 2006
    Assignee: Eastman Kodak Company
    Inventors: Stanley W. Stephenson, David M. Johnson, Xiang-Dong Mi
  • Patent number: 7102631
    Abstract: A liquid crystal display of compact size is disclosed. The liquid crystal display has a tape carrier package and a single integrated PCB for processing a gate driving signal and data driving signal. The tape carrier package includes a base substrate, a gate driver IC formed on said base substrate, an input pattern formed on said base substrate that applies gate driving signals input from an external device to the gate driver IC, a first output pattern formed on said base substrate that outputs a first gate driving signal processed in said gate driver IC, and a second output pattern formed on said base substrate, that outputs a second gate driving signal bypassing the gate driver IC among the gate driving signals.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: September 5, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Soo Kim, Choong-Seob Oh, Jin-Hyeok Park, Jin-Ho Park, Dong-Gyu Kim, Yong-Eun Park, Nam-Soo Kang, Gyu-Su Lee
  • Patent number: 7088311
    Abstract: The invention provides a current generating circuit with a single configuration, enhanced durability, and low power consumption. A circuit block C1 appropriately selects elemental currents i11 to i14 and i1F in accordance with data (bits) S11 to S14 and S14 and generates a sub-current Iout1. Similarly, a circuit block C2 appropriately selects elemental currents i21 to i24 and i2F in accordance with bits S21 to S24 and S2F and generates a sub-current Iout2. A circuit block C3 appropriately selects elemental currents i31 to i34 and i3F in accordance with bits S31 to S34 and S3F and generates a sub-current Iout3. A circuit block C4 appropriately selects elemental currents i41 to i44 in accordance with bits S41 to S44 and generates a sub-current Iout4. These sub-currents Iout1, Iout2, Iout3, and Iout4 are combined to generate a main current Iout.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: August 8, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Toshiyuki Kasai
  • Patent number: 7006072
    Abstract: The present invention discloses an apparatus and method for data-driving a liquid crystal display wherein data lines are time-divided to reduce the number of data driver integrated circuits and to improve the display quality of a picture at the same time. More specifically, the apparatus includes a first multiplexor array applying an input pixel data on a time-division basis, a digital-to-analog converter array converting the time-divided pixel data into pixel voltage signals, and a demultiplexor array performing the pixel voltage signals to the time-divided data lines.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: February 28, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Seung Kuk Ahn