Data Signal Compensation In Response To Temperature Patents (Class 345/101)
  • Patent number: 11087711
    Abstract: The present disclosure provides a common voltage compensation circuit including a feedback signal input terminal and a compensation sub-circuit. The compensation sub-circuit is configured to generate a compensation voltage for compensating a common voltage according to a feedback signal from the feedback signal input terminal and a reference common voltage. The common voltage compensation circuit also includes a first filter sub-circuit, a first terminal of the first filter sub-circuit is electrically coupled to the feedback signal input terminal, and a second terminal of the first filter sub-circuit is electrically coupled to a first clock signal line. The feedback signal line arranged is adjacent to a second clock signal line, and a first clock signal in the first clock signal line and a second clock signal in the second clock signal line are inverted relative to each other. The present disclosure also provides a display driver and a display device.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: August 10, 2021
    Assignees: Beijing BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dianzheng Dong, Weitao Chen, Xiaopeng Cui, Wenpeng Xu, Wan Lin, Haixu Wang
  • Patent number: 11081079
    Abstract: A display device includes an output circuit, a multiplexer, and a controller. The output circuit is configured to output a data voltage to an output pin. The multiplexer is configured to sequentially output the data voltage to different data lines according to a first multiplexing signal and a second multiplexing signal. The controller is configured to generate a control signal according to a variation of the data voltage to make the output pin output a default voltage level different from the data voltage corresponding to the data voltage.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: August 3, 2021
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Chun-Kuei Wen, Chun-Yu Chen, Hung-Min Shih, Jie-Chuan Huang
  • Patent number: 11056047
    Abstract: A display panel includes a plurality of pixels arranged in a matrix, the plurality of pixels respectively including a plurality of sub pixels. The plurality of sub pixels respectively includes a light emitting element, and a PWM pixel circuit configured to control a light emitting duration of the light emitting element, based on a pulse width modulation (PWM) data voltage and a sweep voltage. A plurality of PWM pixel circuits included in the display panel are driven, for each of row lines of the plurality of pixels, in an order of a data setting period for setting the PWM data voltage and then a light emitting period in which the light emitting element emits light during a duration corresponding to the set PWM data voltage according to a change of the sweep voltage.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: July 6, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tetsuya Shigeta, Jinho Kim, Sangyoung Park, Hoseop Lee
  • Patent number: 11009734
    Abstract: To reliably perform light irradiation in a vehicular lamp system using a liquid crystal element even in a cryogenic environment. A control device for a vehicular lamp comprising a light source and a liquid crystal element where the liquid crystal element is set to a light-shielded state and the light source is set to a light-on state to heat the liquid crystal element by the light emitted from the light source when the temperature of the liquid crystal element is estimated to be lower than a predetermined value.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: May 18, 2021
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshihisa Iwamoto, Takuya Kitazono
  • Patent number: 10997914
    Abstract: A system may include a display panel that includes number of pixels that display image data on a display. The system may also include a circuit that measures a voltage associated with a light-emitting diode (LED) of a pixel of the number of pixels in response to the LED receiving a current. In addition to the circuit, the system may employ data processing circuitry that may generate a calibrated prediction model based at least in part on the voltage and the current, such that the calibrated prediction model predicts a change in voltage performance of the LED as the LED ages.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: May 4, 2021
    Assignee: Apple Inc.
    Inventors: Injae Hwang, Jiye Lee, Yifan Zhang, Hyunwoo Nho, Sun-Il Chang, Junhua Tan, Jie Won Ryu, Hyunsoo Kim, Myungjoon Choi, Shiping Shen, Kingsuk Brahma, Jesse A. Richmond
  • Patent number: 10962818
    Abstract: A system for optimizing warm-up time of a display device may include a display device including a display substrate configured to display at least one image, the display substrate including a first display zone and at least one additional display zone. The display device may further include one or more heating layers including a first heating layer portion and at least one additional heating layer portion. The system may further include a controller configured to: generate a first electrical current within the first heating layer portion in order to increase a temperature of the first display zone of the display substrate; and generate at least one additional electrical current within the at least one additional heating layer portion in order to increase a temperature of the at least one additional display zone of the display substrate.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: March 30, 2021
    Assignee: Rockwell Collins, Inc.
    Inventors: Thomas B. Campbell, Christian T. Deloy
  • Patent number: 10935830
    Abstract: A display system may include 1) a plurality of electronic components, 2) an LCD screen that is heatable at a base heating rate by operation of the LCD screen and one or more of the plurality of electronic components, and 3) a heating subsystem for heating the LCD screen at an accelerated heating rate that is greater than the base heating rate to raise a temperature of the LCD screen above a threshold screen temperature. A head-mounted-display device may include 1) a display housing, 2) a plurality of electronic components disposed within the display housing, 3) an LCD screen disposed within the display housing, and 4) a heating subsystem for heating the LCD screen at an accelerated heating rate. Various other apparatuses, systems, and methods are also disclosed.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: March 2, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Richard Han Soo Cho, Cheonhong Kim, Dong Chen, Nirav Rajendra Patel
  • Patent number: 10909940
    Abstract: A method of handling overdrive for image data includes the steps of: receiving a current image data and a previous image data; obtaining an overdrive image data by finding an overdrive lookup table according to the current image data and the previous image data; generating a weighting mask comprising a plurality of weighting parameters; calculating an output image data by combining the overdrive image data with the current image data according to one of the weighting parameters corresponding to a pixel of the current image data; and outputting the output image data to the pixel.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: February 2, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Feng-Ting Pai, Jun-Yu Yang
  • Patent number: 10902784
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: January 26, 2021
    Assignees: Samsung Display Co., Ltd., IUCF-HYU Industry-University Cooperation Foundation Hanyang University
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 10861408
    Abstract: A liquid crystal display device includes: a display panel including a plurality of pixels for displaying an image; a temperature sensor for sensing a temperature; an image data corrector for calculating correction parameters based on a grayscale change, calculating temperature parameters based on preset reference temperatures and the correction parameters, and correcting current image data to provide corrected image data based on the correction parameters and the temperature parameters; and a data driver for converting the corrected current image data into a data voltage and supplying the data voltage to the display panel. At least one of the correction parameters has a value that varies linearly with the sensed temperature and is based in part on the temperature parameters.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Man Kim, Dong Hyun Yeo, Byung Kil Jeon, Yong Bum Kim, Woo Jung Jung
  • Patent number: 10832615
    Abstract: A display panel includes a driving circuit layer disposed on a glass that includes a first driving circuit and a second driving circuit, and an inorganic light emitting device mounted on the driving circuit layer to be electrically connected to the first driving circuit. The inorganic light emitting device includes a sub pixel of the display panel. The first driving circuit is located in an area where the inorganic light emitting device is mounted, while the second driving circuit is arranged in an area excluding an area in which the first driving circuit is arranged in the driving circuit layer. The second driving circuit generates a control signal for driving the first driving circuit and provide the generated control signal to the first driving circuit.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 10, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinho Kim, Kisun Kang, Sangmin Shin, Hoseop Lee, Youngki Jung
  • Patent number: 10754171
    Abstract: A method of correcting optical characteristics of a back light unit (BLU) for a three-dimensional (3D) display apparatus includes: obtaining first optical characteristics of a reference image; obtaining a corrected image by applying an initial correction value, which is determined based on the first optical characteristics, to the reference image; obtaining second optical characteristics of the corrected image; determining whether the second optical characteristics match reference optical characteristics; outputting the corrected image based on determining that the second optical characteristics match the reference optical characteristics, and obtaining a new corrected image and repeating, for the new corrected image, the obtaining the second optical characteristics and the determining whether the second optical characteristics match the reference optical characteristics, based on determining that the second optical characteristics of the corrected image do not match the reference optical characteristics.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 25, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jihyun Bae, Joonyong Park, Youngju Jeong, Bongsu Shin, Dongouk Kim, Dongsik Shim, Sunghoon Lee, Jaeseung Chung
  • Patent number: 10748494
    Abstract: A display device and a display method thereof are provided. The display device includes a display, a light sensing element, and a processor. The display is configured to display an image content. The light sensing element is configured to acquire ambient light information. The processor is coupled to the display and the light sensing element, is configured to provide the image content to the display, and adjusts an output color temperature of the display toward an ambient color temperature according to the ambient light information.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: August 18, 2020
    Assignee: Wistron Corporation
    Inventors: Chien-Hsing Ho, Chuan-Fu Lee
  • Patent number: 10699648
    Abstract: A method of compensating for efficiency degradation of an OLED in an array-based semiconductor device having arrays of pixels that include OLEDs, including determining for a plurality of operating conditions interdependency curves relating changes in an electrical operating parameter of said OLEDs and the efficiency degradation of said OLEDs, the plurality of operating conditions can include temperature or initial device characteristics as well as stress conditions to more completely determine interdependency curves for a wide variety of OLEDs. In some cases interdependency curves are updated remotely after fabrication of the array-based device. Some embodiments utilize degradation-time curves and methods which do not require storage of stress history.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 30, 2020
    Assignee: Ignis Innovation Inc.
    Inventor: Gholamreza Chaji
  • Patent number: 10678356
    Abstract: A disclosed touch sensor integrated display device includes a display panel; and a data drive circuit configured to set a gate-source voltage to turn on a driving TFT in the display panel by applying a data voltage for touch sensing to a gate node of the driving TFT through a data line and a reference voltage to a source node of the driving TFT through a sensing line, during a reset period based on a scan control signal and a sensing control signal, and to output a sensing value by sensing a change in a source-drain current of the driving TFT caused by touch input, during a sensing period subsequent to the reset period.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 9, 2020
    Assignee: LG Dislay Co., Ltd.
    Inventors: Taegung Kim, Sangho Yu, Hyuckjun Kim
  • Patent number: 10665186
    Abstract: Disclosed is a display apparatus including a gate driving circuit, which stably holds an output signal during a touch sensing period. The display apparatus includes a display panel including a display area including a plurality of gate lines, a plurality of data lines, and a plurality of touch sensors, a gate driving circuit dividing the display area into a plurality of horizontal blocks and driving gate lines of a horizontal block by units of horizontal blocks at every display period in one frame, and a touch driving circuit sensing a touch through touch sensors of the horizontal block by units of horizontal blocks at every touch sensing period in the one frame.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: May 26, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Yeonkyung Kim, TaeWoong Moon, JungHyun Lee, YongSeok Park
  • Patent number: 10663808
    Abstract: The embodiments of the present invention provide a curved display panel and a curved display. The curved display panel comprises an array substrate and a color film substrate arranged oppositely, a plurality of spacers arranged between the array substrate and the color film substrate, a first curved side edge and a second curved side edge opposite to the first curved side edge. A cell thickness of a central region is different with a cell thickness of a peripheral region closed to the first curved side edge or the second curved side edge, such that a light leakage amount of the peripheral region is smaller than a first preset value. The curved display comprises the curved display panel provided by the embodiment of the invention.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: May 26, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Zheng Fang
  • Patent number: 10656743
    Abstract: A display apparatus includes a display panel including a display area including a plurality of gate lines, a plurality of data lines, and a plurality of touch sensors, a gate driving circuit dividing the display area into a plurality of horizontal blocks and driving gate lines of a horizontal block by units of horizontal blocks at every display period in one frame, and a touch driving circuit sensing a touch through touch sensors of the horizontal block by units of horizontal blocks at every touch sensing period in the one frame.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: May 19, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: YongSeok Park, JungHyun Lee, Yeonkyung Kim
  • Patent number: 10607538
    Abstract: A pixel circuit, a pixel, and an AMOLED (Active Matrix Organic Light-Emitting Diode) display device comprising the pixel and a driving method thereof. The pixel circuit comprises a power supply circuit, a basic circuit and a compensation circuit, which are sequentially connected. The power supply circuit is connected to a first power supply to supply power to the basis circuit. The compensation circuit is connected to second and third power supplies, respectively, for providing difference values compensating for a voltage and current of an OLED (Organic Light-Emitting Diode). The pixel comprises an OLED and the pixel circuit. The AMOLED display device comprises the pixel circuit. By compensating for a difference between threshold and power supply voltages of a transistor, the response characteristics of the AMOLED may be improved to generate light of a same brightness, thereby meeting requirements on image uniformity and consistency of an AMOLED.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: March 31, 2020
    Assignees: KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER CO., LTD., KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventors: Hui Zhu, Siming Hu, Xiuqi Huang
  • Patent number: 10607519
    Abstract: Provided is a display device. The display device includes a display panel, a gate driving circuit, a sensor part, and a control voltage generator. The gate driving circuit includes driving transistors including a first control electrode and a second control electrode. The sensor part is configured to measure an environmental factor that changes a threshold voltage of the driving transistors. The control voltage generator is configured to apply to the second control electrode a control voltage for controlling the threshold voltage of the driving transistors on the basis of the environmental factor measured by the sensor part.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: March 31, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jaekeun Lim, Chongchul Chai, Jonghee Kim
  • Patent number: 10569573
    Abstract: An inkjet printing device includes a fast-scan drive module, attached to a first gantry, for moving back-and-forth, parallel to a first direction above a flatbed table, a print head including a nozzle row, wherein the first direction is perpendicular to the nozzle row; and a slow-scan drive module, attached to the inkjet printing device, for moving back-and-forth above the flatbed table, parallel to a second direction, the first gantry on a set of motion rails, attached to the inkjet printing device, wherein the second direction is perpendicular to the first direction; and a first drive module, attached to a second gantry, for moving parallel to the second direction the second gantry on the set of motion rails while an ink-receiver is coupled to the second gantry; and loading the ink-receiver on the flatbed table by decoupling the ink-receiver from the second gantry.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: February 25, 2020
    Assignee: AGFA NV
    Inventor: Mark Barrett
  • Patent number: 10529784
    Abstract: There are disclosed a temperature sensor and a method for manufacturing the same. The temperature sensor comprises; a sensor unit including an organic light emitting layer including a delayed fluorescent material; a temperature transfer unit located below the sensor unit to transfer an external temperature to the sensor unit; a first electrode located on the sensor unit; a second electrode located below the sensor unit to be spaced apart from the temperature transfer unit; and a light intensity measuring unit located below the second electrode and measuring the intensity of light emitted from the organic light emitting layer. The temperature sensor can measure a temperature by using a change in the intensity of light using delayed fluorescence, thereby providing improved sensitivity.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 7, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae Whan Kim, Young Pyo Jeon, Yong Hoon Choi, Yu Ra Kim
  • Patent number: 10490142
    Abstract: Objects are to provide a semiconductor device with a novel structure, to provide a semiconductor device with low power consumption, and to provide a semiconductor device with a small chip area. A digital-analog converter and a frame memory are included. The frame memory includes a sample-and-hold circuit, a correction circuit, and a source follower circuit. The sample-and-hold circuit retains the analog voltage output from the digital-analog converter. The correction circuit corrects the analog voltage retained in the sample-and-hold circuit. The source-follower circuit outputs the corrected analog voltage. The sample-and-hold-circuit, the correction circuit, and the source follower circuit each comprise a first transistor. The first transistor comprises an oxide semiconductor layer in a semiconductor layer.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: November 26, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hidetomo Kobayashi, Roh Yamamoto, Kei Takahashi
  • Patent number: 10475485
    Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor, a memory system communicatively coupled to the processor, a cooling system configured to provide thermal control for information handling resources of the information handling system, and a memory capacity control agent embodied as a program of instructions configured to, when executed determine a capability of the cooling system for cooling memory devices of the memory system based on a configuration of the information handling system and manipulate a memory capacity of the memory system based on the capability.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 12, 2019
    Assignee: Dell Products L.P.
    Inventors: Robert B. Curtis, Mukund P. Khatri
  • Patent number: 10467990
    Abstract: A numerical controller includes a drawing processing unit that draws a screen on a display unit, an image display cycle measurement processing unit that measures a display cycle of the screen, and a drawing quality change processing unit that determines drawing quality of the screen based on the display cycle or a CPU processing amount estimated from the display cycle. The drawing processing unit draws the screen according to the drawing quality determined by the drawing quality change processing unit.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: November 5, 2019
    Assignee: Fanuc Corporation
    Inventors: Syuuzo Adachi, Mamoru Kubo, Koichi Murata
  • Patent number: 10461144
    Abstract: A static electricity prevention circuit of a display device including: a driving circuit configured to drive a display unit that displays an image, at least one clock signal wire configured to transmit a clock signal to the driving circuit, at least one transistor electrically coupled to the clock signal wire, and at least one capacitor including a first electrode coupled to a source electrode and to a drain electrode of the transistor, and a second electrode configured to be maintained at a voltage.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 29, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jae Kim, Bo-Yong Chung, Hae-Yeon Lee
  • Patent number: 10459225
    Abstract: A display device includes: a control unit that causes any one of light sources to emit light, each of the light sources emitting light of a different color, generates illumination light of a color from the light emitted from the light sources, using a field-sequential method in which the light sources for emitting light are switched in sequence, and reflects toward a screen, through a reflection unit, the light that corresponds to the display image from among the illumination light; a temperature detection unit for detecting the temperature of a display element; and a temperature adjustment unit for adjusting the temperature of the display element. The control unit stops supplying current to the light sources and supplies current at a first current value only to the temperature adjustment unit when the detected temperature is within a low-temperature or high-temperature non-displayed range of the display element.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: October 29, 2019
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Makoto Hada, Tomoya Kuraishi
  • Patent number: 10446110
    Abstract: Embodiments of the present disclosure provide a display driving circuit, a driving method thereof, a display driving system and a display apparatus. The display driver circuit comprises a processor, a storage and a grey scale voltage generator. The storage is configured to store at least two gamma curves, wherein each of the at least two gamma curves is associated with a range of temperature. The processor is configured to obtain a current environment temperature, to determine a range to which the current environment temperature belongs based on the current environment temperature; to retrieve the gamma curve associated with the range determined from the storage, and to output the retrieved gamma curve to the grey scale voltage generator.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: October 15, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhicheng Wang, Chenfei Qian, Qingyong Li, Fuliang Sun, Tao Yang
  • Patent number: 10425699
    Abstract: The present disclosure relates to a receiving device, a receiving method, a broadcasting device, a broadcasting method, a program, and a link application control system allowing control of receiving device control functions of a link app on the broadcasting side. A link application control system according to a third aspect of the present disclosure includes the broadcasting device that has a supply unit for supplying to the receiving device application control information concerning a link application executable with reception of the contents by the receiving device, and the receiving device that has an application executing unit for executing a link application that may refer to an image of the received contents and change a layout of a screen, and an application control unit for controlling the application executing unit based on the application control information to limit an action of the link application. The present disclosure is applicable to a television broadcasting system.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: September 24, 2019
    Assignee: SONY CORPORATION
    Inventor: Naohisa Kitazato
  • Patent number: 10388226
    Abstract: A temperature compensation circuit and method for a display panel and a display panel are provided. The display panel includes a control circuit, a driving circuit, a detection circuit and a pixel circuit; wherein the detection circuit is configured to obtain a current threshold voltage of a transistor of the pixel circuit, the control circuit obtains a current voltage difference between the current threshold voltage and an initial threshold voltage, obtains a current compensation gain matching the current voltage difference according to a predetermined related data of a voltage difference and a compensation gain, and controls the driving circuit to drive the pixel circuit by using the current compensation gain. By practice of the disclosure, the temperature compensation for a display panel could be achieved without the additional temperature sensor, so the service life of the display panel could be extended.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: August 20, 2019
    Assignee: SHENZHEN CHINA OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Tai-jiun Hwang, Zhenling Wang
  • Patent number: 10372002
    Abstract: A display device includes: pixels; gate lines for connecting to the pixels; a first gate driving block for connecting to first and second gate lines that are adjacent to each other; and a second gate driving block for connecting to the first gate line and the second gate line, wherein the first gate driving block includes: a first gate signal generating portion; a first transistor connected between a first output terminal of the first gate signal generating portion and the first gate line; and a second transistor connected between the first output terminal and the second gate line, wherein the second gate driving block includes: a second gate signal generating portion; a third transistor connected between a second output terminal of the second gate signal generating portion and the first gate line; and a fourth transistor connected between the second output terminal and the second gate line.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: August 6, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Whee-Won Lee, Ga-Na Kim
  • Patent number: 10373576
    Abstract: A liquid crystal display driving apparatus including a pixel voltage driving circuit for providing a periodical pulse high-voltage signal is provided. The liquid crystal display driving apparatus includes: a gate driving unit, a source driving unit, and a gate line and a date line intersected with each other to define a pixel region, in which a pixel electrode is provided, wherein the source driving unit includes: a pixel voltage driving circuit for providing a unidirectional voltage signal applied to the pixel electrode in the pixel region and for providing a periodical pulse high-voltage signal; and a common voltage driving circuit for providing a common voltage signal which corresponds to the unidirectional voltage signal provided by the pixel voltage driving circuit.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 6, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiangchun Xiao, Lujiang Huangfu, Haiyu Zhao, Hongming Zhan
  • Patent number: 10248778
    Abstract: A method for improving unlocking speed and a mobile terminal are provided. The method is applicable to the mobile terminal in a screen-off state and equipped with a metal dome array. The method includes the follows. A first thread is executed when a current unlock mode of the mobile terminal is press-to-trigger fingerprint unlock in the screen-off state, and a second thread is executed during the execution of the first thread. The first thread includes the following. An operation instruction is received when a user touches a fingerprint module, a fingerprint image is acquired, the fingerprint image acquired is compared with a preset fingerprint image, and unlock after a successful match. The second thread includes the following. An operation instruction is received when the user presses the metal dome array, and wait for unlocking success and then a display screen is lit up.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 2, 2019
    Assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
    Inventors: Haiping Zhang, Yibao Zhou
  • Patent number: 10217398
    Abstract: A temperature sensing module for a display device includes a temperature sensing routing, configured on a panel of the display device; and a temperature sensing unit, able to sense a resistance of the temperature sensing routing and generate a temperature indicating information according to the resistance; wherein the temperature indicating information indicates an operating temperature of an active area of the panel and is utilized to adjust at least one driving signal that controls the active area to display images.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: February 26, 2019
    Assignee: Sitronix Technology Corp.
    Inventors: Chun-Chi Yeh, Chih-Te Hung
  • Patent number: 10204588
    Abstract: Embodiments of the present disclosure provide a temperature compensation circuit, a display panel and a temperature compensation method. The temperature compensation circuit comprises: a temperature sensing unit, adapted to sense a temperature of an external environment; a temperature compensation control unit being adapted to compare the temperature sensed output voltage with a reference voltage, and generate a control signal based on the comparison result; and a first voltage source adapted to receive a control signal from the temperature compensation control unit, generate a corresponding driving voltage based on the control signal and output the corresponding driving voltage to a gate drive circuit as a gate driving voltage of the gate drive circuit, and generate a feedback signal according to the control signal and output the feedback signal to the temperature sensing unit and the temperature compensation control unit, the reference voltage being variable based on the feedback signal.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Tianxing Liu, Bei Yang, Wen Li
  • Patent number: 10197838
    Abstract: A display device includes a display panel, a plurality of pixels arranged on the display panel, a data driver and a gate driver configured to apply a driving signal to the plurality of pixels, a timing controller configured to apply a control signal to the data driver and the gate driver, and store a plurality of driving voltage predetermined values for different temperatures, a temperature sensor configured to measure an ambient temperature, and a power management integrated circuit configured to adjust a driving voltage. The power management integrated circuit includes a controller configured to receive a driving voltage predetermined value among the plurality of driving voltage predetermined values from the timing controller using the measured ambient temperature, a plurality of storage banks configured to store the driving voltage predetermined value, and a power generator configured to output the driving voltage at the driving voltage predetermined value.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: February 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yanguk Nam, Daesik Lee, Jongjae Lee, Sujin Kim, Junki Hong
  • Patent number: 10163401
    Abstract: A method of compensating for efficiency degradation of an OLED in an array-based semiconductor device having arrays of pixels that include OLEDs, including determining for a plurality of operating conditions interdependency curves relating changes in an electrical operating parameter of said OLEDs and the efficiency degradation of said OLEDs, the plurality of operating conditions can include temperature or initial device characteristics as well as stress conditions to more completely determine interdependency curves for a wide variety of OLEDs. In some cases interdependency curves are updated remotely after fabrication of the array-based device. Some embodiments utilize degradation-time curves and methods which do not require storage of stress history.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 25, 2018
    Assignee: Ignis Innovation Inc.
    Inventor: Gholamreza Chaji
  • Patent number: 10132690
    Abstract: The present invention provides a temperature sensing system integrated in a liquid crystal display panel and a liquid crystal display panel. The temperature sensing system includes a sensing unit (11), located in a display region (1) of the liquid crystal display panel, and a calculation and control unit (12), located outside the display region (1); the sensing unit (11) includes a first metal conductor (A) and a second metal conductor (B) located in the display region (1), and as a short circuit point exists between the two, a voltage difference generates between the two, and the voltage difference is converted into a digital signal with an analog to digital converter (122) after it is amplified by an operational amplifier (121), and finally, the micro controller unit (123) processes the digital signal to obtain a temperature in the liquid crystal display panel and to determine whether the protect temperature is reached.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: November 20, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yuyeh Chen, Yuhua Chang, Mingwei Chen
  • Patent number: 10096300
    Abstract: A luminance compensator in a display device includes a temperature sensor that detects a temperature of a display panel, a temperature estimator that calculates an estimated temperature of each of a plurality of pixel blocks based on an average luminance of each pixel block and the temperature of the display panel, a first weight calculator that detects a displacement of the display panel and calculates a first temperature compensation weight for first compensation pixel blocks of the pixel blocks, the first compensation pixel blocks being adjacent to an upper side of an image pattern area displayed on a portion of the display panel, and a temperature compensator that calculates temperature compensation data by applying the first temperature compensation weight to the estimated temperature to compensate the average luminance, and outputs the temperature compensation data.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: October 9, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Man-Bok Cheon, So-Young Kim, Jin-Ho Lee, Woo-Seok Jang
  • Patent number: 10088679
    Abstract: A head-up display device for a vehicle includes a housing, a temperature detector, and a light source control unit. The head-up display device projects, toward an external projection member, lights indicating display information for displaying an image produced by the reflected lights to a user positioned at a predetermined position. The housing houses the display portion and the light source disposed facing each other via heat transfer space. The temperature detector is disposed in a surrounding area of the display portion and the light source, and detects a temperature of the surrounding area. The light source control unit increases brightness of the emitted lights by increasing driving current of the light source when the detected temperature is lower than a reference low-temperature. The heat generated by the increased driving current is transferred to the display portion via the heat transfer space, and increases a temperature of the display portion.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: October 2, 2018
    Assignee: DENSO CORPORATION
    Inventor: Yayoi Yonemoto
  • Patent number: 10008158
    Abstract: An organic light-emitting display device includes an organic light-emitting display panel displaying an image that includes a plurality of frames, a data driver providing a plurality of data signals, which correspond to the image, to the organic light-emitting display panel, and a gamma voltage generator providing a gamma voltage, which varies in a same period as each of the frames, to the data driver.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: June 26, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Woo Park, Dong Hwan Kim, Ki Myeong Eom
  • Patent number: 9997121
    Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may implement a physically derived circuit model of the pixels. A charge accumulation input response matrix and a charge accumulation state response matrix for the model may be stored in look-up table circuitry and used in computing a current charge accumulation state based on current pixel voltage information and previous state information. The impact of temperature, backlight illumination level, frame duration, and other factors may be taken into account in evaluating the current charge accumulation state.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: June 12, 2018
    Assignee: Apple Inc.
    Inventors: Chaohao Wang, Hao Nan, Paolo Sacchetto, Zhibing Ge
  • Patent number: 9990706
    Abstract: Systems and methods may apply global contrast correction to a plurality of thermal images. For example, a vehicle may capture a plurality of aerial thermal images for use in generating a composite image. Each individual thermal image may be individually contrasted based on the temperature range of pixels in that image, so the contrast range of the thermal images may vary. The plurality of thermal images may be analyzed to determine a global contrast range. Extreme temperatures may be excluded from the global contrast range. Based on the global contrast range, a contrast level of each of the plurality of thermal images may be adjusted. For example, the individual temperature range of each thermal image may be scaled to a global temperature range. A composite image having consistent contrasting may be generated from the plurality of thermal images.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: June 5, 2018
    Inventor: Eric Olsen
  • Patent number: 9972247
    Abstract: A power supply device and a display device including the same disclosed. In one aspect, the power supply device includes a DC-DC converter including a power supply having an input voltage and configured to generate a power voltage and a power current based at least in part on the input voltage and a feedback voltage and supply the power voltage to an output line. A detector is configured to detect the power voltage and the power current, a feedback circuit configured to generate the feedback voltage based at least in part on the power voltage and the power current and supply the feedback voltage to the DC-DC converter. A memory is configured to store a power error voltage signal corresponding to a power error voltage including the difference between the power voltage and a reference power voltage.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: May 15, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Jun Lee, Jang-Hui Kim, Hwan-Woo Lee
  • Patent number: 9960761
    Abstract: The present invention provides a thin film transistor gate voltage supply circuit, and the thin film transistor gate voltage supply circuit is employed to supply a gate voltage for a thin film transistor, and the thin film transistor gate voltage supply circuit comprises a voltage generation circuit and a temperature compensation circuit, and the voltage generation circuit is employed to generate an original voltage, and the temperature compensation circuit is electrically coupled to the voltage generation circuit, and the temperature compensation circuit is employed to detect an ambient temperature, and as the ambient temperature is smaller than a preset temperature, the temperature compensation circuit compensates the original voltage according to a difference value of the ambient temperature and the preset temperature to obtain a first voltage, and supplies the first voltage to a gate of the thin film transistor to drive the thin film transistor normally work.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: May 1, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Dan Cao
  • Patent number: 9885468
    Abstract: According to an aspect, a light emitting device includes a base that includes at least a frame body; a light source that emits light; and a temperature sensor with which the base is provided and that detects changes in temperature of the light source. A space is provided between the temperature sensor and a portion of the base corresponding to a portion in which the temperature sensor is provided.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: February 6, 2018
    Assignee: Japan Display Inc.
    Inventor: Masashi Takagi
  • Patent number: 9880411
    Abstract: A display device includes a substrate, a thin film transistor disposed on the substrate, where the thin film transistor includes a drain electrode, a passivation layer disposed on the substrate covering the thin film transistor, a common electrode disposed on the passivation layer, where the common electrode receives a common voltage, a liquid crystal layer disposed in a microcavity layer on the common electrode, a roof layer disposed covering the liquid crystal layer, and a pixel electrode disposed on the roof layer, and a method of manufacturing the display device is provided.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: January 30, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Mi Seo, Suk Won Jung
  • Patent number: 9858851
    Abstract: A display device and an operation method thereof are provided. The display device includes a frame scaler, a timing controller, a LCD panel and a source driver. The frame scaler provides a plurality of image data according to an image signal and determines whether the image data are repeatedly transmitted according to a frame control signal. When the image data are repeatedly transmitted, the image data transmitted firstly are set to correspond to gray scale data, and the image data retransmitted are set to correspond to a display image transmitted by the image signal. The timing controller receives the image data to provide a plurality of image display data and receives the frame control signal to determine a data transmission rate of the image display data. The source driver provides a plurality of display voltages to the LCD panel according to the image display data.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 2, 2018
    Assignee: ASUSTeK COMPUTER INC.
    Inventor: Jie-Chieh Hung
  • Patent number: 9858890
    Abstract: A liquid crystal display device is configured so that one frame is divided into two fields and a pixel of a liquid crystal panel is driven. The liquid crystal display device performs overdrive when a gray-scale level to be supplied to the pixel is different between a previous frame and a current frame. The liquid crystal display writes a voltage corresponding to the gray-scale level of the pixel with a positive voltage in a first field, and writes a voltage corresponding to the gray-scale level to be supplied to the pixel with a negative voltage in a second field. When performing overdrive, the liquid crystal display device performs overdrive in both of the first field and the second field. Also, when performing overdrive, the liquid crystal display device corrects the gray-scale level to be supplied to the pixel.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: January 2, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Kazuhisa Mizusako, Hiroyuki Hosaka
  • Patent number: 9786243
    Abstract: A gate driving circuit includes a plurality of stages for providing gate signals, wherein a k-th stage (k is a natural number greater than 3) includes a first output transistor including a control electrode connected to a first node, an input electrode for receiving a clock signal, and an output electrode for outputting a k-th gate signal, a second output transistor including a control electrode connected to the first node, an input electrode for receiving the clock signal, and an output electrode for outputting a k-th carry signal, a pull-down unit connected to a discharge node to pull down the output electrode of the first output transistor in response to a signal of the discharge node, and a discharge unit configured to output a (k?1)-th carry signal output from a (k?1)-th stage to the discharge node in response to a (k+1)-th carry signal output from a (k+1)-th stage.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 10, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sehyoung Cho, Kyung-hoon Kim, Dongwoo Kim, Ilgon Kim, Kangmoon Jo