Waveform Generator Coupled To Display Elements Patents (Class 345/208)
  • Patent number: 9997119
    Abstract: A buffer circuit, a display module, and a display driving method are disclosed. The buffer circuit comprises a positive polarity buffer, a negative polarity buffer. The positive polarity buffer receives a first supply voltage and a second supply voltage to output a positive reference voltage to a positive resistance string. The second supply voltage is less than the first supply voltage. The negative polarity buffer receives the second supply voltage and a third supply voltage to output a negative reference voltage to a negative resistance string. The third supply voltage is less than the second supply voltage.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: June 12, 2018
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chieh-An Lin, Chun-Yung Cho, Jhih-Siou Cheng
  • Patent number: 9971213
    Abstract: A frequency controlled electro-optical device includes a substrate having transparent conductive control sections patterned thereon to selectively control the optical state of an electro-optical layer. Each of the control sections are partially electrically isolated from each other by crack lines, which allows for electrical communication between adjacent/proximate control sections to occur. As such, an electrical control signal applied directly to one control section forms an electric field in that control section, and also induces an electrical field in adjacent control sections that are not in direct receipt of the control signal. Therefore, the number of electrical connections required for coupling to a driving circuit to operate the device is minimized, thereby allowing the device to be fabricated with reduced complexity and cost.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: May 15, 2018
    Assignee: Kent State University
    Inventors: John Lawton West, Da-Wei Lee, Merrill Groom
  • Patent number: 9947256
    Abstract: An integrated circuit device includes: a timing information storage section that stores phase length information in correspondence with an index number; a waveform information storage section that stores waveform information related to a plurality of drive waveforms used in response to at least one display state; a timing control section that reads an index number included for each phase in the waveform information, reads phase length information corresponding to the index number from the timing information storage section, and sequentially generates a selection signal during a drive voltage application period corresponding to a plurality of phases; and a drive waveform selection section that selects a waveform value representing a drive voltage, out of a plurality of units of waveform information stored in the waveform information storage section, in accordance with the selection signal.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: April 17, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kota Muto, Toshimichi Yamada
  • Patent number: 9905159
    Abstract: A method for digital driving of an active matrix display with a predetermined frame rate is described. The display contains a plurality of pixels organized in a plurality of rows and a plurality of columns. The method includes representing each of the plurality of pixels of an image to be displayed within a frame by an n-bit digital image code. The method also includes dividing the image frame into sub-frames, which may be of substantially equal duration. Within each sub-frame, the method includes sequentially selecting at least one of the plurality of rows twice. Upon a first selection, a first digital code is written to the selected row and upon a second selection a second digital code is written to the selected row. There is a predetermined time delay between the second selection and the first selection. Digital driving circuitry is also described.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: February 27, 2018
    Assignees: IMEC VZW, Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
    Inventor: Jan Genoe
  • Patent number: 9881571
    Abstract: An image display control unit in a three-dimensional image display apparatus is configured to drive gate lines and the data lines so as to provide the display panel with a left eye image signal during a first frame in which a right eye image signal is displayed on the display panel, and with the right eye image signal during a second frame in which the left eye image signal is displayed on the display panel. During the first frame, each of the pixels provides a second capacitor with the right eye image signal, and a first capacitor with the left eye image signal. During the second frame, each of the pixels provides the first capacitor with the right eye image signal, and the second capacitor with the left eye image signal. A backlight unit maintains a turn-on state during the first and second frames.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 30, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Sik Hwang, Jung-Won Kim
  • Patent number: 9881689
    Abstract: An emission driver and a display device having the same are disclosed. In one aspect, the emission driver includes a plurality of stages each configured to output an emission control signal, wherein each of the stages includes first and second driving blocks and a buffer block. The buffer block is configured to selectively output an emission control signal so as to operate in a sequential emission mode or in a simultaneous emission mode, the stages being configured to sequentially output a plurality of the emission control signals in the sequential emission mode and substantially simultaneously output the emission control signals in the simultaneous emission mode. The buffer block is further configured to determine a duration in which the emission control signal has a first voltage level based on an interval between time points when first and second intermediate signals have low voltage levels.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: January 30, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Yeon Lee, Bo-Yong Chung, Na-Young Kim
  • Patent number: 9881566
    Abstract: An object of the present invention is to provide a display device which suppresses power consumption as well as displaying an image with excellent quality. A display device (1) in accordance with one aspect of the present invention includes a polarity determining section (35) for determining whether or not a first polarity in a drive vertical period immediately preceding a first term in which an image is not rewritten is the same as a second polarity in a pause vertical period which is a last pause vertical period before the second vertical period, and a refresh control section (34) for providing an additional vertical period in the first term in a case where the first polarity is the same as the second polarity.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: January 30, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tatsuo Watanabe, Junki Asai, Kenji Maeda
  • Patent number: 9881554
    Abstract: Embodiments of the present disclosure relate to a technical field of display technology, and provide a driving method for a pixel circuit and a driving device thereof. A problem of cost increase can be solved which is caused by an increase in a number of storages when adjustment is made by way of Gamma curve and table lookup, by means of the technical solutions according to embodiments of the present disclosure. The driving method of the pixel circuit includes acquiring brightness information of a display screen in a light-emitting phase (S101); determining a duty cycle of a pulse signal according to the brightness information (S102); inputting a high level to the first voltage terminal, and inputting the pulse signal with the duty cycle to a gate of the first switching transistor by the first gate line (S103).
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 30, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Meng, Danna Song
  • Patent number: 9870747
    Abstract: A display device is disclosed. In one aspect, the display device includes a display panel divided into first and second display parts. The display device also includes a first driving circuit configured to receive a driving voltage, generate a first gamma reference voltage based on the driving voltage, generate a first data signal based on the first gamma reference voltage, and apply the first data signal to the first display part. The display device further includes a second driving circuit configured to apply a second data signal to the second display part and a first share line disposed on the display panel. The first share line is configured to receive the first gamma reference voltage. The second driving circuit is further configured to receive the first gamma reference voltage from the first share line and generate the second data signal based on the first gamma reference voltage.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: January 16, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Won Park, Jung-Won Kim
  • Patent number: 9858878
    Abstract: A scanning line drive unit selects a plurality of scanning lines in order, and controls the operation of a thin-film transistors. A timing control unit controls the scanning line drive unit on the basis of a display signal that includes a horizontal synchronization signal, a vertical synchronization signal, and an image signal. The timing control unit is provided with: a first terminal to which the display signal is input; a second terminal to which a sub-synchronization signal, which is a signal other than the horizontal synchronization signal and the vertical synchronization signal, is input; and a notification unit that outputs a notification signal in a case where a period while only the sub-synchronization signal, among the horizontal synchronization signal, the vertical synchronization signal, and the sub-synchronization signal, is input is longer than a prescribed period.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: January 2, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takuya Sone, Noriyuki Tanaka
  • Patent number: 9805640
    Abstract: Embodiments of the invention provide a gate drive apparatus and a display apparatus. With the gate drive apparatus, a clock signal is used in place of a forward scan signal and/or a clock signal is used in place of a backward scan signal and/or a reset signal and a first initial trigger signal (or a second initial trigger signal) are used in place of a low level signal and/or the same signal is used as a first initial trigger signal and a second initial trigger signal to thereby reduce the number of transmission lines for signals driving the gate drive apparatus.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 31, 2017
    Assignees: SHANGHAI AVIC OPTOELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Huijun Jin, Zhiqiang Xia
  • Patent number: 9792850
    Abstract: A data transmission system comprises an operation apparatus and a matrix display apparatus. The matrix display apparatus includes a display panel and a control unit. The control unit receives a data stream and transmits at least a part of the data stream to an electrode on the display panel. When the operation apparatus operates on a display surface of the matrix display apparatus, at least a part of the data stream is coupled to the operation apparatus from the matrix display apparatus. Thereby, the data stream such as data or file can be transmitted to the operation apparatus from the matrix display apparatus through a wireless communication. The data transmission system of the invention can be combined with the application of the near field communication, and the data or file can be transmitted to another electronic apparatus through the display apparatus so that the application can be expanded.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: October 17, 2017
    Assignee: SLIM HMI TECHNOLOGY
    Inventor: Hsiung-Kuang Tsai
  • Patent number: 9792868
    Abstract: The present disclosure provides a shift register unit including a pull-up module, an input module, a reset module, a first pull-down module, a second pull-down module, a first control module, a second control module, a first state clearing module, and a second state clearing module. The shift register unit utilizes a first clock signal and a second clock signal to cause the first and second pull-down modules to pull down alternately, in order to maintain the stability of the output signal. Furthermore, each of the TFTs in the circuit structure has a duty cycle smaller than 50%, so that the lifetime of TFTs is greatly increased. The present disclosure further provides a gate driving device and a display device using the shift register unit.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: October 17, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Zheng Wang
  • Patent number: 9785019
    Abstract: A pixel structure including an active device and a pixel electrode is provided. The pixel electrode is electrically connected to the active device and includes a main trunk portion and branch portions. The main trunk portion includes a first extending part and a second extending part that cross each other. The plurality of branching portions is connected to the main trunk portion, and each branching portions is separated by the main trunk portion. The branching portions include a plurality of first branching part and a plurality of second branching part. The first extending part separates the first and second branching part. An included angle of at least part of the first branching part and the second extending part is ?1, an included angle of at least part of the second branching part and the second extending part is ?2, and ?1 is not equal to ?2.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: October 10, 2017
    Assignee: Au Optronics Corporation
    Inventors: Hung-Che Lin, Yi-Jung Chen, Cheng-Han Tsao, Sheng-Ju Ho
  • Patent number: 9786241
    Abstract: A GOA circuit for an LCD includes GOA units connected in cascade and the plurality of GOA units at stages formed. The GOA unit at an nth stage corresponds to a scan line. The scan line includes a nth scan line, a (n+1)th scan line, and a (n+2)th scan line. The GOA unit at the an nth stage includes a first pull-down holding circuit, a pull-up circuit, a bootstrap capacitance circuit, a pull-down circuit, and a clock circuit. The improved GOA circuit at one stage corresponds to the output of three gate lines. So a number of the stages of the GOA circuit is reduced. Only ? stage of the conventional GOA circuit is needed. Because of the decrease in the number of the stages, more flexibility of design is given to the GOA circuit at each stage. It is beneficiary for the design in narrow bezels.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: October 10, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Peng Du
  • Patent number: 9767761
    Abstract: A driver circuit driving a display device comprises: a gradation voltage generating circuit for generating m gradation voltages (m is an integer larger than or equal to 2) indicative of m stages of gradation levels; n decoder circuits each configured to select, out of the m gradation voltages, n drive voltages (n is an integer larger than or equal to 2) corresponding to n data pieces on the basis of n input gradation signals; m gradation voltage wirings each for transferring the m gradation voltages to the n decoder circuits, respectively; and a charge supplementing circuit for supplementing each of the m gradation voltage wirings with an amount of electric charge when a voltage drop occurs in the gradation voltage wirings.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: September 19, 2017
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventors: Kenichi Shiibayashi, Koji Higuchi
  • Patent number: 9762169
    Abstract: The present disclosure discloses a linear motor system. The system includes a linear motor and a drive module which drives the linear motor to vibrate. The linear motor includes a housing having an accommodating space, a vibrating module accommodated in the accommodating space and an elastic part for supporting the vibrating module in the accommodating space elastically. The drive module includes a drive unit for driving the vibrating module to vibrate and a tuning unit for regulating the resonant frequency of the vibrating module. Moreover, the linear motor system of the present disclosure can meet vibration requirements of various application programs and scenes.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: September 12, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventor: Lubin Mao
  • Patent number: 9761190
    Abstract: It is an object to provide a display device which can favorably display a image without delayed or distorted signals. The display device includes a first gate driver and a second gate driver. The first gate driver and the second gate driver each include a plurality of flip flop circuits and a plurality of transfer signal generation circuits. Both the flip flop circuit and the transfer signal generation circuit are circuits which output a signal inputted to a first input terminal with a half clock cycle delay. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage. Therefore, delay and distortion of the signal which is inputted from the transfer signal generation circuit to the flip flop circuit can be reduced.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: September 12, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 9712811
    Abstract: Different full screen content is displayed on the same television at the same time from the perspective of the viewer by displaying as the content as two full screen sequential frames. The different full screen content may be provided as a single combined frame signal such as a side-by-side, top-bottom, or checkerboard signal which is then displayed as two sequential full screen frames. Configured glasses such as polarized or shutter are used to view the different content as full screen content where one pair of configured glasses views an initial one of the sequential frames but blocks the subsequent one and another pair of configured glasses blocks the initial one of the sequential frames and views the subsequent one. Shutter glasses have both lenses open during the initial frame and both closed during the subsequent one. For polarized glasses, the initial frame has a polarization matching both lenses of one pair of glasses while the subsequent frame has a polarization that differs from both lenses.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: July 18, 2017
    Inventor: Jeramie J Keys
  • Patent number: 9704436
    Abstract: The present invention provides a pixel circuit, a driving method thereof, an array substrate, and a display device. The pixel circuit comprises: a reset unit, configured to output a reference signal; a data writing unit, configured to output a data signal; a compensation unit, which is connected to the reset unit and the data writing unit as well as an output node, and receives a power voltage signal, and a light-emitting unit, which is connected to the output node and a cathode of a power supply and configured to emit light under the drive of the light emission drive signal in a light emission phase.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: July 11, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Pan Xu, Yongqian Li
  • Patent number: 9704449
    Abstract: The gate driving circuit includes an (m?1)-th stage externally receiving a first dummy signal for a first time period to control a turn-off, an m-th stage externally receiving a second dummy signal for the first time period to control the turn-off, an (m?2)-th stage receiving an m-th carry signal for a second time period from the m-th stage and externally receiving the second dummy signal for the second time period to control the turn-off, and an (m?3)-th stage receiving an (m?1)-th carry signal for the second time period from the (m?1)-th stage and externally receiving the first dummy signal for the first time period to control the turn-off, wherein the first time period is longer than the second time period.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: July 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hyang Kim, Kyung-Hoon Kim, KyoungHo Lim, Kwang-chul Jung, Junki Jeong
  • Patent number: 9691341
    Abstract: A data driver includes a digital-to-analog converter, a control signal output circuit, and an output buffer. The digital-to-analog converter generates first data voltages and second data voltages based on image data and a polarity control signal. Each first data voltage has a positive polarity, and each second data voltage has a negative polarity. The control signal output circuit outputs a first output control signal and a second output control signal based on the polarity control signal. A phase of the second output control signal is different from a phase of the first output control signal. The output buffer outputs the first data voltages based on the first output control signal and outputs the second data voltages based on the second output control signal.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: June 27, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ik-Hyun Ahn, Yoon-Gu Kim, Bong-Im Park
  • Patent number: 9672792
    Abstract: The present invention provides a display device with reduced power consumption and that reduces changes in luminance, and perceptibility of flicker, and a driving method thereof. A display device according to an exemplary embodiment comprises: a display panel configured to display a still image and a motion picture; a signal controller configured to control signals for driving the display panel; and a graphics processing unit configured to transmit input image data to the signal controller, wherein the signal controller comprises a frame memory configured to store the input image data, and the display panel is driven at a first frequency when the motion picture is displayed and the display panel is driven at a second frequency that is lower than the first frequency when the still image is displayed.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: June 6, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jun Choi, Jae-Won Jeong, Jae-Suk Choi, Seung-Ho Baek, Joo Seok Yeom, Young-Su Han, Myeong-Su Kim, Yun-Jae Kim, Jin-Soo Kim, Seung Hwan Moon, Po-Yun Park, Jae Wan Park, Kwan-Young Oh, Min Joo Lee, Jung Hwan Cho
  • Patent number: 9664993
    Abstract: A light module comprises first excitation radiation source emitting first excitation radiation having a first optical property value, second excitation radiation source emitting second excitation radiation having a second optical property value which differs from the first value. At irradiation region (P), a phosphor and an optical element, which is at least partly reflective with maintenance of the optical property, are arranged alternately or simultaneously. A first dichroic mirror is arranged between the first excitation radiation source and irradiation region (P), and a second dichroic mirror is arranged between the second excitation radiation source and irradiation region (P). The first optical path proceeding from the first excitation radiation source successively comprises the first dichroic mirror, irradiation region (P) and the second dichroic mirror.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: May 30, 2017
    Assignee: OSRAM GmbH
    Inventor: Ulrich Hartwig
  • Patent number: 9632338
    Abstract: In a liquid crystal device according to the invention, a pre-tilt angle of a liquid crystal layer is greater on an opposing electrode side than on a pixel electrode side. A high potential and a low potential relative to an opposing electrode potential are alternately applied to pixel electrodes through switching elements; and the opposing electrode potential is higher than a standard potential, the standard potential being a potential in which the average potential between the high potential and the low potential has been shifted by an amount equivalent to the average value of the amount of change in the potential of the pixel electrodes caused by parasitic capacitance in the switching elements when the high potential is applied to the pixel electrodes and the amount of change in the potential of the pixel electrodes caused by parasitic capacitance when the low potential is applied to the pixel electrodes.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: April 25, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masakazu Nishida, Shohei Yoshida, Takenori Hirota, Tomokazu Umeno, Akinori Masuzawa
  • Patent number: 9632376
    Abstract: A liquid crystal display device includes: a first substrate for which a single pixel includes: first, second and third thin film transistors on the first substrate; a pixel electrode including a first subpixel electrode and a second subpixel electrode which are connected to the first thin film transistor and the second thin film transistor, respectively; and a divided reference voltage line connected to the third thin film transistor; a second substrate facing the first substrate; a common electrode on the second substrate; and a liquid crystal layer between the pixel electrode and the common electrode and including liquid crystal molecules. The third thin film transistor includes an electrically floating gate electrode, a source electrode defined by an extended portion of a terminal of the second thin film transistor, and a drain electrode defined by an extended portion of the divided reference voltage line.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: April 25, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min-Joo Han, Dan Bi Yang, Ji Phyo Hong, Ki Chul Shin
  • Patent number: 9607536
    Abstract: A testing apparatus to establish a fault by a process of elimination includes an input unit, a signal converting unit, a switch unit, and a display unit. The input unit receives an input signal and outputs a switch signal. The signal converting unit receives the switch signal and outputs a control signal. The switch unit receives the control signal and outputs a test signal. The display unit receives the test signal and runs a built in self test (BIST) program to test the proper functioning of the display unit. The signal converting unit outputs a data signal and a clock signal to the display unit when the display unit works normally. The signal converting unit not output the data signal and the clock signal to the display unit when the input signal and resulting control signal are repeated.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 28, 2017
    Assignees: HONG FU JIN PRECISION INDUSTRY (WuHan) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chun-Sheng Chen, Zhen-Sheng Wang
  • Patent number: 9601057
    Abstract: A pixel circuit, an organic electroluminescent display panel and a display device are provided. The pixel circuit includes a light emitting element, a first capacitor, a reset control module, a drive control module, a compensation control module, and a light emission control module. In a reset phase, the reset control module writes a reset signal at a reset signal end into a second end of the first capacitor. In a compensation phase, the reset control module writes a data signal at a data signal end into a first end of the first capacitor, and the drive control module charges the first capacitor through the compensation control module. In a light emission phase, both the light emission control module and the first capacitor enable the drive control module to drive the light emitting element with a stable current for emission of light.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 21, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Gang Liu, Chen Liu, Dan Chen, Dong Qian
  • Patent number: 9576512
    Abstract: A display panel including a display part including a plurality of sub-pixels configured to display a plurality of colors, and a plurality of data lines connected with the sub-pixels; a first test part configured to supply a test signal to (2K?1)th data lines (‘K’ is an integer above 0) by each color for the sub-pixels among the plurality of data lines; and a second test part configured to supply a test signal to 2Kth data lines by each color for the sub-pixels among the plurality of data lines when the first test part supplies the test signal. Further, a polarity of the test signal supplied by the second test part is opposite to a polarity of the test signal supplied by the first test part.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: February 21, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jae Chul Park, Je Hyung Park
  • Patent number: 9552776
    Abstract: Disclosed is a luminance compensation apparatus of an organic light emitting diode panel including a reference pixel element unit that is installed at an outer peripheral portion of a display area on an organic light emitting diode panel and operate corresponding to a pixel element aligned in the display area, and a driving chip that is provided in an area including the reference pixel element unit of the outer peripheral portion of the display area, compares a luminance value of light incident from the reference pixel element unit with a reference luminance value to calculate a luminance deviation value based on a comparison result, controls driving of pixel elements aligned in the display area according to the luminance deviation value, and allows light, luminance deviation of which has been compensated, to be irradiated.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: January 24, 2017
    Assignee: SILICONFILE TECHNOLOGIES INC.
    Inventors: Do-Young Lee, Jae-Won Uhm
  • Patent number: 9530344
    Abstract: A method of operating a display including loading image data to pixels in multiple rows of pixels in an array of pixels during a data loading phase, actuating the pixels in the multiple rows during an update phase, and illuminating at least one lamp during an lamp illumination phase to illuminate the actuated pixels to form an image on the display, in which each of the loading, actuating and illuminating phases partially overlap in time.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 27, 2016
    Assignee: SnapTrack, Inc.
    Inventors: Jignesh Gandhi, Jasper Lodewyk Steyn, John J. Fijol, Roger W. Barton, Stephen R. Lewis, Abraham McAllister, Nesbitt W. Hagood, IV
  • Patent number: 9530370
    Abstract: The present disclosure relates to a field of display technology. Provided are a shift register unit and a driving method thereof, a gate driving circuit and a display device. The shift register unit includes an input module, a pull-up module, a pull-down control module and a pull-down module. The turn-on duty ratio of transistors in the shift register unit may be reduced, and the power consumption of the display device product may be reduced.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: December 27, 2016
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dong Yang, Xue Dong, Xi Chen, Hao Zhang
  • Patent number: 9495926
    Abstract: Systems, apparatuses, and methods for preventing charge accumulation on a display panel of a display. A display pipeline is configured to drive a display using a variable frame refresh rate. The display may also be driven by a polarity inversion cadence to alternate the polarity on the display panel on back-to-back frames. In some cases, the frame refresh rate cadence, as specified in frame packets which contain configuration data for processing corresponding frames, can cause a charge accumulation on the display panel if an odd number of frames are displayed at a first frame refresh rate before switching to a second frame refresh rate. Accordingly, in these cases, the display pipeline may override the frame refresh rate setting for a given frame to cause an even number of frames to be displayed at the first frame refresh rate.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: November 15, 2016
    Assignee: Apple Inc.
    Inventors: Brijesh Tripathi, Peter F. Holland, Arthur L. Spence, Axel B. Schumacher, David A. Hartley
  • Patent number: 9449555
    Abstract: Aspects of embodiments of the present invention include a display device including: a display unit comprising a plurality of scan lines that extend in a row direction, a plurality of data lines that extend in a column direction, and a plurality of pixels coupled to the scan lines and the data lines; a scan driver configured to sequentially apply a scan signal of a gate-on voltage to the scan lines during a writing period for applying a data voltage to the pixels; and a data driver configured to apply a data voltage to the data lines during the writing period, wherein a first power source voltage supplying a driving current of the pixels is applied to the data lines during a period other than the writing period.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: September 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Cheol Yun Jeong
  • Patent number: 9406254
    Abstract: A display device includes a timing controller and a data driver. The timing controller to output a first control value including information on low gray scale values, a second control value including information on high gray scale values, and a third control value including information on subfields, corresponding to input data. The data driver to control the gray scale value of a pixel in a plurality of subfields in one frame based on the first, second and third control values. The pixel is driven in an analog manner when the gray scale value based on whether the first or second control value is output, and is driven in a digital manner when the gray scale value corresponds to an emission time during a predetermined subfield among the plurality of subfields.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 2, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Yong Shin, Jin-Sung Kim, Joo-Hyuk Yum, Hyuk-Jae Lee
  • Patent number: 9390654
    Abstract: The present invention discloses a pixel driving circuit of OLED display, which comprises: a scanning transistor TFT1, the source thereof being connected to the data line, the gate thereof being connected to a current row scanning control line, the drain thereof being connected to a first terminal of a storage capacitor C1; a precharging transistor TFT3, the source thereof being connected to the data line, the gate thereof being connected to a previous row scanning control line, and the drain thereof being connected to the first terminal of the storage capacitor C1; a driving transistor TFT2; and an organic light emitting diode; wherein, the scanning time of the current row scanning control line at least partially overlaps that of the previous row scanning control line. The embodiment of the present invention can improve the charging efficiency of the storage capacitor in each pixel unit and then improve the display effects.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: July 12, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xiangyang Xu
  • Patent number: 9384700
    Abstract: A pixel circuit, an organic electroluminescent display panel and a display device are provided. The pixel circuit includes a light emitting element, a first capacitor, a reset control module, a drive control module, a compensation control module, and a light emission control module. In a reset phase, the reset control module writes a reset signal at a reset signal end into a second end of the first capacitor. In a compensation phase, the reset control module writes a data signal at a data signal end into a first end of the first capacitor, and the drive control module charges the first capacitor through the compensation control module. In a light emission phase, both the light emission control module and the first capacitor enable the drive control module to drive the light emitting element with a stable current for emission of light.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 5, 2016
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Dan Chen, Dong Qian
  • Patent number: 9385658
    Abstract: A folded cascode amplifier (FCA) including cascode stages coupled in a stacked cascode configuration, an input stage, and a switch circuit. The stages may include first and second P-type stages and first and second N-type stages, in which the first N-type stage and the input stage receive first and second bias voltages, respectively. The switch circuit couples a first cascode bias voltage to the second P-type stage and couples a second cascode bias voltage to the first N-type stage in a high power state, and decouples the first and second cascode bias voltages in a low power state. A non-switched low current bias generator provides the first and second bias and cascode bias voltages, which remain substantially stable in the low and high power states. Only low parasitic capacitance nodes are switched between power states so that the gain of the FCA recovers very quickly for the high power state.
    Type: Grant
    Filed: December 13, 2014
    Date of Patent: July 5, 2016
    Assignee: INTERSIL AMERICAS LLC
    Inventor: Xin Zhang
  • Patent number: 9372560
    Abstract: The present invention relates to a signal detection system of a touch screen, and more particularly to a signal detection system of a large-sized mutual capacitive multi touch screen that is capable of effectively reducing RC time delay, signal distortion, an effect of noise, parasitic resistance, and parasitic capacitance.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: June 21, 2016
    Assignee: IKAIST CO., LTD.
    Inventors: Gyu Hyeong Cho, Sang Hui Park, Gyu Ha Cho, Chul Kweon, Joo Yeong Yoon, Sung Jin Kim, Soo Hyun Park
  • Patent number: 9362316
    Abstract: Disclosed is a display device which includes: a plurality of gate lines arranged in a first direction; a plurality of data lines arranged in a second direction crossing the first direction; a plurality of jumping electrodes each disposed a first edge portion of each of the data lines; and a plurality of shield portions disposed between the jumping electrodes. Such a display device allows the shield portions to be disposed between the jumping electrodes. As such, the display device can prevent a light leak phenomenon due to an electric field which is generated by the shortened distance between the front edge portions of the data lines.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: June 7, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Young Jik Jo, Chul Nam
  • Patent number: 9360693
    Abstract: A liquid crystal display (LCD) that includes a plurality of segments, and a plurality of control lines to activate the plurality of segments. Each of the plurality of segments is associated with an intersection of two of the control lines, and each of the plurality of control lines intersects with each of the other plurality of control lines.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 7, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Zhang Jun, Ji Ru Jun
  • Patent number: 9313838
    Abstract: Driver circuits (20) for driving light circuits (21) comprising light emitting diodes are provided with converters (22) for converting input signals into output signals comprising pulses per cycle. The converters (22) comprise adapters (33) for, in response to differences between measured amplitude values of the input/output signals and nominal amplitude values of the input/output signals, adapting widths of the pulses. Then, signals having relatively precise amplitudes are no longer required. Said adapting may comprise increasing/decreasing the widths in case the measured amplitude value is smaller/larger, respectively, than the nominal amplitude value. The measured amplitude value divided by the nominal amplitude value is equal to a correction value. An adjusted duty cycle of the output signal may be made equal to a nominal duty cycle of the output signal divided by the correction value. Said adapting may be performed in a production/testing process environment.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 12, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Wouter Oepts, Dan Maarten Kerst Jens
  • Patent number: 9304361
    Abstract: A display substrate includes a first display substrate comprising a display area having an array of switching elements and a peripheral area surrounding the display area, a second display substrate facing the first display substrate, a color filter disposed on the display area of the first display substrate, a first backflow-blocking pattern including a material substantially the same as the color filter and disposed on the peripheral area and an insulation layer covering the color filter and the first backflow-blocking pattern, the insulation layer having a hole exposing, for outgas testing purposes, a corresponding portion of the first backflow-blocking pattern.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: April 5, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong-Tae Kim, Kwang-Jae Kim, Hyun-Woong Baek, Yong-Chan Jeon
  • Patent number: 9281077
    Abstract: A shift register includes series-connection circuits to transmit a shift pulse. The series-connection circuits include a continuous stage group with continuous stages. Each stage of the continuous stage group includes a first output transistor, a first capacitor, an input gate, a first switching element, a second switching element, a third switching element, and a fourth switching element.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: March 8, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiko Nakamizo, Masashi Yonemaru, Kenichi Ishii, Yasuaki Iwase
  • Patent number: 9257077
    Abstract: An LCD apparatus has a first scan line transmitting a first scan signal, a second scan line transmitting a second scan signal, a data line intersecting the first and second scan lines, a switch element electrically coupled to the first scan line and the data line, a pixel electrode electrically coupled to the switch element, a coupling capacitance electrically coupled to the pixel electrode and the second scan line. The second scan line has three different voltage levels. When the first scan line enables the switch element, the pixel electrode receives a data signal through the data line. When the second scan signal switches to the third voltage level from the second voltage level, the pixel electrode is negative polarity, and when the second scan signal switches to the second voltage level from the third voltage level, the pixel electrode is positive polarity.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: February 9, 2016
    Assignee: InnoLux Corporation
    Inventor: Shie-Ping Chang
  • Patent number: 9234923
    Abstract: To provide a signal processing device which enable the user to rapidly repeat an operation of changing to a different resolution with a fingertip touch in the line of sight to a displayed graph. A display unit 31 that displays a graph, a touch panel 32 that is provided so as to correspond to a display screen 31a and includes a touch sensor for outputting positional information associated with a touch operation, and a parameter data table 44 that stores a plurality of processing parameters corresponding to each positional information item. A control unit 50 includes a processing parameter output unit 54 that reads the processing parameter corresponding to the positional information from the parameter data table 44 and outputs the processing parameter to the processing parameter setting unit 21, if the positional information is input.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: January 12, 2016
    Assignee: ANRITSU CORPORATION
    Inventor: Koichiro Tomisaki
  • Patent number: 9224356
    Abstract: DAC includes a decoder that receives N number of reference voltages and an n-bit digital signal (n 4) to select first to third voltages, and an operational amplifier to output (first voltage+second voltage+2 third voltage)/4 voltage. The operational amplifier is able to output, for respective 2^n combinations of the n-bit digital signal, voltage levels from an Ath level, as a base level, to an (A?1+2^n)th level. The N number of reference voltages include Ath level, (A+4)th level, (A?4+2^n) and (A+2^n), and an at most {?4+2^(n?2)} reference voltages obtained by decimating a pre-set at least one reference voltage from {?3+2^(n?2)} reference voltages that are other than the four number of reference voltages from the {1+2^(n?2)} reference voltages corresponding to the voltage levels spaced each other at an interval of 4 levels from the Ath level. N is not less than 4 and not more than 2^(n?2).
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: December 29, 2015
    Assignee: Renesas Elecronics Corporation
    Inventor: Hiroshi Tsuchi
  • Patent number: 9159287
    Abstract: When the degree of reliability of a motion vector is equal to or higher than a threshold, an interpolated image is generated, and the image of a frame of interest and the interpolated image are output to a panel in the order named. Every time the image is output, a backlight is turned on. When the degree of reliability is lower than the threshold, the image of the frame of interest is output twice to the panel. Every time the image is output, the backlight is controlled to alternately set its light amount to the first light amount and the second light amount smaller than the first light amount.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: October 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yukihiko Sakashita
  • Patent number: 9123590
    Abstract: An array substrate, a display device and a method for fabricating an array substrate are disclosed.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: September 1, 2015
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yu Ma
  • Patent number: 9123283
    Abstract: The present disclosure relates to a shift register, a gate driving circuit and a display apparatus, wherein the shift register outputs an output signal of each stage in a forward direction according to a forward scanning signal and outputs the output signal of each stage in a reverse direction according to a reverse scanning signal, each stage of the shift register includes a forward scanning switch module, a reverse scanning switch module, a pull-up driving module; a pull-up module; a pull-down driving module; a first pull-down module; and a second pull-down module. A bi-directional scanning can be achieved by using the forward scanning switch module and the reverse scanning switch module to control to input different signals to different modules.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 1, 2015
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Zheng Wang