Patents Examined by Henry N. Tran
  • Patent number: 7903055
    Abstract: Disclosed is a light-emitting display having a plurality of pixels wherein each pixel comprises a light-emitting device (100) having a light-emitting element layer which is formed between a first electrode and a second electrode and contains at least a light-emitting layer. An insulating layer (30) is formed between the light-emitting device (100) and a surface of a first or second substrate on the viewing side of the display, and the insulating layer (30) is provided with recesses and projections in at least one or more pixel regions, thereby forming an optical path length adjusting portion (32). By forming such an optical path length adjusting portion (32) in a pixel region, there is an increase in the interference conditions for the light emitted from the light-emitting device (100) to the outside, thereby averaging the interference.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: March 8, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Patent number: 7903071
    Abstract: A driver IC for a display that includes a first D/A converter with a 1st selection circuit that receives 1st image signals and supplies a selected positive divisional voltage to a 1st operational amplifier, which supplies a positive pixel voltage by amplifying the selected positive divisional voltage; a 2nd D/A converter with a 2nd selection circuit that receives 2nd image signals and supplies a selected negative divisional voltage to a 2nd operational amplifier, which supplies a negative pixel voltage by amplifying the selected negative divisional voltage; and a polarity switching switch with 1st and 2nd switches connecting the 1st and 2nd D/A converters respectively, the polarity switching switch being switched to supply each of output terminals corresponding to the 1st and 2nd image signals alternately with the positive and negative pixel voltages every horizontal scan period by activating/inactivating the 1st and 2nd switches in a complementary manner.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: March 8, 2011
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Hideto Fukuda, Shinya Udo, Masao Kumagai, Osamu Kudo
  • Patent number: 7903067
    Abstract: A driver chip includes a base body, input terminals, first output terminals and dummy terminals. The base body includes a face having first to fourth edge portions. The first and second edge portions are disposed in substantially parallel along a longitudinal side of the face, and the third and fourth edge portions are disposed in substantially parallel along a horizontal side of the face. The input terminals are formed on the first edge portion such that the input terminals are arranged along the longitudinal side. The first output terminals are formed on the second edge portion such that the first output terminals are arranged along the longitudinal side. The dummy terminals are formed such that the dummy terminals are disposed between the input terminals and the first output terminals. A warpage and defects of electrical connection between the driver chip and a display panel of the display apparatus are prevented.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Young Yoon, Chun-Ho Song, Seong-Yong Hwang
  • Patent number: 7898536
    Abstract: A display apparatus and a method of driving the same in which a selector outputs one of two high gamma values and one of two low gamma values in one frame unit in response to a selection signal. A gamma reference voltage generator outputs a high gamma reference voltage corresponding to the selected high gamma value and a low gamma reference voltage corresponding to the selected low gamma value. A data driving circuit outputs a first data voltage based on the high gamma reference voltage during a first active period and outputs a second data voltage based on the low gamma reference voltage during a second active period. Thus, a display panel may display an image using data voltages corresponding to different gamma curves in one frame unit, thereby improving visibility of the display apparatus.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: March 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Jin Shin, Hyoung-Rae Lee
  • Patent number: 7884787
    Abstract: The invention has an object of providing a display device which can make a full use of a mirror functionality even in a dark environment. A display device comprising: image forming means (50, 60, 70, 71) for displaying information to be displayed during one state external light during the other state; input means (30) for inputting a mirror function executing instruction; and control means (82) for causing the image forming means to be switched to the other state in response to the mirror-function executing instruction. The display device further comprises an illumination unit (91) for irradiating an object to be reflected in the mirror (60) with light during the other state.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: February 8, 2011
    Assignee: TPO Hong Kong Holding Limited
    Inventors: Yusei Ukawa, Toshiyuki Otsuki
  • Patent number: 7884837
    Abstract: A method and display device for correcting spatial non-uniformity in a display device are provided. The method includes receiving color signals of a pixel to receive the pixel, extracting correction data for correcting adjacent representative color signals which represent areas adjacent to the received pixel, and correcting the adjacent representative color signals using correction data and correcting the color signals of the pixel using the corrected adjacent representative color signals.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: February 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Han Bing, Young-shin Kwak, Du-sik Park, Young-ran Han
  • Patent number: 7880696
    Abstract: A display device having a scanning line, a data line, a power supply line, and a pixel. The pixel having a first transistor supplied with a selecting pulse of a scanning signal, a holding capacitor having a first electrode and a second electrode that holds an image signal from the data line and the first thin film transistor. The pixel also having a second transistor controlled by the image signal, a gate of the second transistor being electrically connected to the second electrode, and a luminescent element provided between a pixel electrode and an opposite electrode opposed to the pixel electrode driven by current that flows between the pixel electrode and the opposite electrode. A potential of the gate electrode of the second transistor being able to be shifted by supplying to the first electrode of the holding capacitor with a predetermined signal after the selecting pulse becomes non-selective.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: February 1, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Tokuroh Ozawa, Mutsumi Kimura
  • Patent number: 7880694
    Abstract: An emission driver may include a first signal processor adapted to receive a clock signal, an input signal and an inverse input signal, and generate a first output signal, a second signal processor adapted to receive the first output signal, an inverse clock signal and negative feedback signals, and generate a second output signal, a third signal processor adapted to receive the second output signal and the input signal, and generate a third output signal that is an inverse of the second output signal based on the input signal, a fourth signal processor adapted to receive the second output signal, and generate a fourth output signal based on the second output signal, the fourth output signal being an inverse signal of the third output signal, and a fifth signal processor adapted to receive the fourth output signal and output a fifth output signal based on a stored predetermined voltage.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: February 1, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Bo-yong Chung
  • Patent number: 7876299
    Abstract: A method of illuminating a pixel on a display to a desired brightness level that includes dividing a time required to reach a maximum brightness level into one or more time slices, varying a pixel voltage associated with the pixel according to a sequence of voltage values over the one or more time slices, and gradually increasing the brightness of the pixel according to the pixel voltage.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: January 25, 2011
    Assignee: High Definition Integration Ltd.
    Inventor: Michael Bolotski
  • Patent number: 7876293
    Abstract: An image display system comprises a pixel driving circuit. A storage capacitor is coupled between the first and second nodes. The first switch is turned on in the first and second periods. The second switch, coupled to the first node, is turned on in the first and second periods. The third switch, coupled between the second node and the first switch, is turned on in the first, third and fourth periods. The fourth switch, coupled between the second switch and the first voltage, is turned on in the first, third and fourth periods. The fifth switch, coupled between the second node and the first voltage, is turned on in the first, second and third periods. The sixth switch, coupled between the first node and the reference voltage, is turned on in the fourth period. The first transistor is coupled between the first and second switches and is turned on in the fourth period. During the second period, the voltage between source and gate of the first transistor is a threshold voltage.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: January 25, 2011
    Assignee: TPO Displays Corp.
    Inventor: Ping-Lin Liu
  • Patent number: 7855707
    Abstract: A liquid crystal display device includes: a liquid crystal panel; a horizontal sync signal having a horizontal period; a gate driver that supplies a plurality of gate signals sequentially to a plurality of gate lines, wherein a first gate line provides a gate signal with a gate pulsewidth equal to the horizontal period +? and a second gate line provides a gate signal with a gate pulsewidth equal to the horizontal period +? so that gates signals on the first and second gate lines overlay by 2? and wherein the first and second gate lines are adjacent to one another; and a data driver that supplies pixel data signals to a plurality of data lines on the liquid crystal panel during every period of the horizontal sync signals.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 21, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jea Seok Park, Yong Ju Jeon
  • Patent number: 7855709
    Abstract: In a liquid crystal display device including a liquid crystal display panel and a backlight, the present invention provides a detection-use pixel having the same constitution as respective pixels constituting a liquid crystal display part in the liquid crystal display panel and being formed on a region other than the liquid crystal display part, a light detector detecting light from the backlight through the detection-use pixel, and a controller adjusting the intensity of the light from the backlight in response to a signal from the light detector to adjust the change of the characteristics and chromaticity in the liquid crystal display panel properly.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: December 21, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventor: Tatsuo Kamei
  • Patent number: 7852328
    Abstract: For a data input method and apparatus capable of latching data from a memory by using a clock of optimal timing, and a liquid crystal display device using the same, a clock of an optimal margin is set by reading out check data stored in a memory, and the check data read out from the memory is latched and generated according to the set clock of the optimal margin.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: December 14, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jong Hyon Park
  • Patent number: 7843444
    Abstract: An exemplary video graphics array interface tester includes a VGA connector being configured to couple to a VGA interface to be tested and having a plurality of signal pins to output different VGA signals; a load circuit connected to the signal pins of the VGA connector for impedance matching; a selection switch having a plurality of throws corresponding to the signal pins of the VGA connector connected to the signal pins of the VGA connector respectively, and a pole; and a test port connected to the pole of the selection switch for selectively testing one of the VGA signals via selection of the selection switch. Using this tester to detect the VGA interface can guarantee quality and improve efficiency of VGA test.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: November 30, 2010
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Fa-Sheng Huang, Shang-Yang Hsieh
  • 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: 7839372
    Abstract: An electrooptic apparatus substrate and examination method therefor can be provided which can implement an examination without requiring bringing a probe into contact thereto from the outside and with satisfactory measuring accuracy. A substrate 1 of the present invention includes a video line 7 and transmission date portion 6 through multiple switching elements for writing a first potential signal in multiple pixels through a signal line. The substrate 1 further includes a display data reading circuit portion 4 having a differential amplifier 4a for lowering a lower potential and heightening a higher potential and outputting it to the signal line and a transmission gate portion 6 and video line 7 for reading the first potential signal and a reference second potential signal.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: November 23, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Tatsuya Ishii, Shigefumi Yamaji, Koichi Mizugaki
  • Patent number: 7839392
    Abstract: A sensing circuit is provided that senses an externally provided pressure on a panel, and includes a sensing capacitor, a first switching element, a second switching element and a third switching element; where the sensing capacitor includes a sensing electrode on the first substrate, the insulating layer and the opposite electrode; the sensing capacitor varies a capacitance based on the externally provided pressure; the first switching element is electrically connected to the sensing electrode to charge the sensing capacitor based on a first switching signal; the second switching element outputs a current based on a second switching signal and a first voltage; the third switching element is electrically connected to the sensing electrode to control the current based on the variation of the capacitance of the sensing capacitor to generate a sensing signal; and where a thickness is decreased, and an image display quality is improved.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: November 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Jin Pak, Young-Jun Choi, Man-Seung Cho, Joo-Hyung Lee, Myung-Woo Lee
  • Patent number: 7839378
    Abstract: A unit for an method of analyzing received image data to determine whether the received image data corresponds to a single-view or to multiple views is disclosed. The method comprises: dividing the received image data (200) into a number of structures (1-9) of data elements (224-234); computing a correlation between a first one (1) of the structures of data elements and a second one (2) of the structures of data elements; and establishing that the received image-data corresponds to multiple views on basis of the correlation between the first one of the structures of data elements and the second one of the structures of data elements.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: November 23, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marcellinus Petrus Carolus Michael Krijn, Wilbert Ijzerman
  • Patent number: 7834869
    Abstract: A display panel driver has two driver circuits that drive separate halves of a display panel. Each driver circuit occupies a separate integrated circuit chip. The driver has a screen saving mode in which each driver circuit displays an independent screen saving image that moves in synchronization with a timing signal. The timing signal is generated in one driver circuit and transmitted by a chip-to-chip interface to the other driver circuit. The two screen saving images are thereby coordinated to create what appears to be a single screen saving display.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: November 16, 2010
    Assignee: Oki Semiconductor Co., Ltd.
    Inventors: Akira Kondo, Naoya Kimura, Haruyo Takayanagi, Tetsuro Hara, Takayuki Shimizu, Hiroyoshi Ichkura
  • Patent number: 7830371
    Abstract: A liquid crystal display and a method of driving the same is capable of for preventing a difference in brightness from occurring between horizontal line blocks. A liquid crystal display includes a liquid crystal display panel having liquid crystal cells arranged in a matrix pattern; at least one integrated circuit for driving the liquid crystal display panel; a supply line commonly connected to the at least one integrated circuit for applying drive signals to the at least one integrated circuit; and a signal-limiting part formed at an input terminal of the supply line, wherein the supply line has a higher resistance than the sum of the line resistances of the entire supply line.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: November 9, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sang Moo Song, Sang Rae Kim, Jae Hong Park