Data Signal Compensation In Response To Temperature Patents (Class 345/101)
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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
  • Patent number: 9773463
    Abstract: The present invention discloses methods of adjusting display device driving voltage and a display device, which are used for improving pressing unevenness (Trace Mura) of the display device caused by pressing or paddling. The method comprises: comparing the driving voltage of a display device with a driving voltage threshold; and if the driving voltage is larger than the driving voltage threshold, adjusting the driving voltage to make the adjusted driving voltage be smaller than or equal to the driving voltage threshold.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: September 26, 2017
    Assignees: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yuan Li, Yi Du
  • Patent number: 9767737
    Abstract: A liquid crystal display apparatus includes a backlight configured to emit red light, green light, and blue light for forming an image, a liquid crystal panel including a plurality of pixels through which light components supplied by the backlight respectively pass, configured to control transmittances of the plurality of pixels to form an image, and a backlight controller configured to control respective intensities of the red light, the green light, and the blue light emitted by the backlight. The backlight controller is configured to compensate for a black color coordinate value generated with respect to a predetermined color by controlling the backlight such that a second red light intensity and a second green light intensity are larger than a first red light intensity and a first green light intensity and a second blue light intensity are smaller than a first blue light intensity. A black color coordinate value may be made correspond to a white color coordinate value.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: September 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jongho Son, Kyunghee Lee, Kangseob Jeong, Joonhyung Park, Keunchan Oh
  • Patent number: 9767739
    Abstract: The present disclosure discloses a driving circuit for electrophoretic display, including a data line driving integrated circuit and a gate line driving integrated circuit, characterized in that the output terminal of each data line in the data line driving integrated circuit is configured with a modulation unit including a thermosensitive element, and the modulation unit adjusts the pulse width of the voltage signal outputted at the output terminal of the data line according to change of temperature to realize temperature compensation for the dielectric characteristic of the electrophoretic film of the electrophoretic display. The present disclosure also discloses an implementation method of the driving circuit and an electrophoretic display device. According to the present disclosure, the workload of the early stage experiment process of the product design can be saved, the production efficiency of the products can be improved, and the storage space of the chip can also be saved.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: September 19, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhengxin Zhang, Yi Zheng, Shuai Xu, Yao Yu
  • Patent number: 9756700
    Abstract: A safety protection arrangement is provided for a lighting arrangement. An electrical parameter is measured with the driving of the lighting arrangement with particular driving settings and it is compared with an estimated expected value of the electrical parameter so that a safety warning signal or a shutdown can be provided in the event of a detected system failure.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: September 5, 2017
    Assignee: Koninklijke Philips N.V.
    Inventors: Marius Leendert Trouwborst, Ramon Antoine Wiro Clout, Jacobus Petrus Johannes Van Os, Franciscus Antonius Kneepkens
  • Patent number: 9741300
    Abstract: A drive circuit has a ferroelectric liquid crystal panel that operates at a given switching angle and response speed, a sensor that measures temperature, a drive circuit that supplies driving voltage to the ferroelectric liquid crystal panel, a waveform generation circuit that supplies a waveform signal to the drive circuit, and a control circuit that controls the waveform generation circuit; and in a first frame of the driving voltage, outputs during a first interval, a first voltage that is positive and outputs during a second interval that is longer than the first interval, a second voltage that is positive, and in a second frame, outputs during the first interval, the first voltage that is negative and outputs during the second interval that is longer than the first interval, the second voltage that is negative. The control circuit varies the first voltage and the second voltage according to the measured temperature.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: August 22, 2017
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Haruki Amakawa, Shinya Kondoh
  • Patent number: 9704452
    Abstract: Described herein are technologies related to a method of initializing and configuring a display pipeline for a graphic support in a pre-operating system (pre-OS) environment.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: July 11, 2017
    Assignee: Intel Corporation
    Inventors: Jiming Sun, Philip Park
  • Patent number: 9696569
    Abstract: The present disclosure discloses a driving apparatus of a display panel and a display apparatus. A temperature detection module for detecting a temperature of the switching power supply is provided, so that when the temperature of the switching power supply is larger than or equal to a preset temperature value, the temperature detection module may feed back to the clock controller a first control signal. The clock controller may switch a polarity inversion mode of displaying an image on the display panel according to the received first control signal, i.e., switching the polarity inversion mode from the first polarity inversion mode with a large power consumption into a second polarity inversion mode with a small power consumption, thereby reducing the power consumption of the switching power supply and thus reducing the temperature of the switching power supply.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: July 4, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Jieqiong Wang
  • Patent number: 9666135
    Abstract: Provided is a display device, including: a plurality of pixels; a scan driver connected to a plurality of scanning lines connected to the plurality of pixels; and a gate signal generator configured to determine a level of a gate-on voltage according to ambient temperature and to supply the gate-on voltage to the scan driver, wherein the gate signal generator is further configured to apply a hysteresis characteristic to a thermistor voltage to vary according to the ambient temperature.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: May 30, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bon-Sung Koo, Jong Jae Lee, Eui-Dong Hwang, Jun Dal Kim, Yang Uk Nam
  • Patent number: 9640129
    Abstract: Disclosed are a voltage adjustment circuit for a common electrode and a display apparatus, which are capable of improving a sensitivity and a precision in an adjustment of a voltage of the common electrode. The voltage adjustment circuit for the common electrode includes a first fixed resistor, a second fixed resistor and a first adjustable resistor and the voltage adjustment circuit for the common electrode further includes an adjustment module, which is connected to an output terminal of the voltage adjustment circuit for the common electrode and an adjustable terminal of the first adjustable resistor, and is configured to cooperate with the first adjustable resistor to adjust a resistance of the voltage adjustment circuit for the common electrode in order to adjust the output voltage of the common electrode.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: May 2, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ping Chen, Zhiyu Qian, Lei Jin, Yimin Wang
  • Patent number: 9618783
    Abstract: An improved Liquid Crystal Display (LCD) heating system is provided. Resistor meshes, in particular VCOM resistor heating meshes, in the pixel array improve capacity of the display heater (heating system) so that the display is heated faster from low temperatures. The resistor mesh design provides much lower resistance from one point in the pixel array to an edge than pixel-to-pixel horizontal VCOM resistance, thus reducing horizontal crosstalk. Further, the approach permits the display to be active during the warm-up process.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: April 11, 2017
    Assignee: Kopin Corporation
    Inventors: Chompoonoot Anupongongarch, Frederick P. Herrmann, Wen-Foo Chern
  • Patent number: 9542895
    Abstract: An electro-optic display includes an electro-optic medium, a pixel electrode for applying an electric field to the medium and a column electrode associated with the pixel electrode. To reduce power consumption, when it is necessary to change the voltage on the column electrode from a first value to a second value to change the optical state of the electro-optic medium, the column electrode voltage is first changed to a third value intermediate the first and second values to permit charge to flow to or from the column electrode, and thereafter the column electrode voltage is changed from the third voltage to the second voltage.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: January 10, 2017
    Assignee: E Ink Corporation
    Inventors: Holly G. Gates, Robert W. Zehner, Jonathan D. Albert
  • Patent number: 9530363
    Abstract: The performance of an electro-optic display, for example, a bistable electro-optic display, can be improved by modifying the frame rate of a base waveform used to drive a transition between gray states. Such modifications permit fine control of gray levels with reduced artifacts. The described methods additionally require less memory to store all of the waveforms needed to achieve good performance of an electro-optic display over a range of temperatures.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: December 27, 2016
    Assignee: E Ink Corporation
    Inventors: Yuval Ben-Dov, Karl Raymond Amundson
  • Patent number: 9514700
    Abstract: A signal processing device of a liquid crystal apparatus detects a boundary between a first pixel to which a first voltage lower than a first reference voltage is applied and a second pixel to which a second voltage higher than a second reference voltage is applied on the basis of a signal for controlling a voltage applied to pixels, corrects a signal correlated with M pixels including the first pixel to a third voltage which is higher than the first voltage and lower than the second voltage, outputs the third voltage as an applied voltage to the M pixels in a first period, outputs the first voltage as an applied voltage to the M pixels in a second period, and outputs the third voltage as an applied voltage to the M pixels in a third period.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 6, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Taku Kitagawa, Hiroyuki Hosaka