Controlling The Condition Of Display Elements Patents (Class 345/214)
  • Patent number: 10467963
    Abstract: A system for controlling a display in which each pixel circuit comprises a light-emitting device, a drive transistor, a storage capacitor, a reference voltage source, and a programming voltage source. The storage capacitor stores a voltage equal to the difference between the reference voltage and the programming voltage, and a controller supplies a programming voltage that is a calibrated voltage for a known target current, reads the actual current passing through the drive transistor to a monitor line, turns off the light emitting device while modifying the calibrated voltage to make the current supplied through the drive transistor substantially the same as the target current, modifies the calibrated voltage to make the current supplied through the drive transistor substantially the same as the target current, and determines a current corresponding to the modified calibrated voltage based on predetermined current-voltage characteristics of the drive transistor.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: November 5, 2019
    Assignee: Ignis Innovation Inc.
    Inventor: Gholamreza Chaji
  • Patent number: 10460686
    Abstract: Embodiments relate to a gate driving device including a reference voltage generator for generating a kickback compensating reference voltage, the kickback compensating reference voltage decreasing during one frame section based on a horizontal synchronization signal, and a gate output voltage generator for decreasing a kickback compensating voltage of a gate output voltage during one frame section based on the kickback compensating reference voltage.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: October 29, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tong Ill Kwak, Kl Hyun Pyun
  • Patent number: 10453368
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: October 22, 2019
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Patent number: 10431143
    Abstract: A shift register includes a first input circuit, a second input circuit, and a pull-up transistor. The first input circuit is coupled to a first input terminal and a first pull-up node, and configured to electrically connect the first input terminal to the first pull-up node when the first input terminal receives an active signal. The second input circuit is coupled to a second input terminal and a second pull-up node, and configured to electrically connect the second input terminal to the second pull-up node when the second input terminal receives an active signal. The pull-up transistor includes a first gate electrode coupled to the first pull-up node and a second gate electrode coupled to the second pull-up node.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: October 1, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONCIS TECHNOLOGY CO., LTD.
    Inventors: Miao Zhang, Mo Chen, Jing Sun, Wuxia Fu
  • Patent number: 10431148
    Abstract: A module type display apparatus includes a communication interface configured to communicate with at least one external module type display apparatus; a display panel including a plurality of light emitting diodes (LEDs); a storage configured to store information regarding at least one of brightness and a color coordinate that is previously measured according to a characteristic of an LED among the plurality of light emitting diodes; at least one sensor configured to sense a characteristic of at least one LED; and a processor configured to set a target value based on at least one of second brightness and a second color coordinate received from the at least one external module type display apparatus, and control to adjust at least one of first brightness and first color coordinate of the at least one LED to have the target value, based on the information acquired from the storage.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: October 1, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung-chul Kim, Kil-soo Jung, Woo-sung Shim
  • Patent number: 10431142
    Abstract: A circuit includes an electroluminescent (EL) device, a transistor, a first capacitor and a second capacitor. The transistor, coupled between a supply voltage and the EL device, includes a gate coupled to a first node and a first terminal coupled to a second node. The first capacitor, coupled between the first node and the second node, is configured to reset the gate of the transistor to the supply voltage in response to a first control signal. The second capacitor, including a first end coupled to the second node and a second end to receive a second control signal, is configured to establish at the first terminal of the transistor a compensation voltage associated with a threshold voltage of the transistor in response to the second control signal. The transistor is configured to pass a current through the EL device. The current has a magnitude independent of the threshold voltage of the transistor.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: October 1, 2019
    Assignee: INT TECH CO., LTD.
    Inventor: Shih-Song Cheng
  • Patent number: 10410600
    Abstract: A display panel includes a signal generating circuit, a pixel array disposed adjacent to the signal generating circuit, and a plurality of gate driver circuits disposed adjacent to the signal generating circuit and the pixel array. The signal generating circuit is configured to provide a plurality of clock signals and a plurality of data signals. The gate driver circuits are configured to convert the clock signals to a plurality of gate signals and transfer the gate signals to the pixel array. The pixel array is configured to receive the gate signals and the data signals for display. Delays of the gate signals increase along a first direction, delays of the data signals increase along a second direction, and the second direction is opposite to the first direction. The signal generating circuit is further configured to calibrate the gate signals and the data signals.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: September 10, 2019
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Shiang-Lin Lian, Mei-Yi Li, Yu-Chieh Kuo
  • Patent number: 10403201
    Abstract: The present disclosure provides a pixel driving circuit, a pixel driving method, a, display panel and a display device. The pixel driving circuit includes a driving transistor, a storage capacitor, a switching control module, a writing control module and a light-emission control module. A gate electrode of the driving transistor is electrically connected to a first electrode of the driving transistor at a threshold compensation stage and a writing stage under the control of the switching control module, so as to write a threshold voltage of the driving transistor into the storage capacitor. A data voltage is written into a second electrode of the driving transistor at the writing stage under the control of the writing control module.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: September 3, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaoxiang He, Bo Wu, Xiaojing Qi
  • Patent number: 10403211
    Abstract: An organic light emitting display device includes pixels, a sensor configured to extract at least one of deviation information of first transistors of the pixels and deterioration information of OLEDs of the pixels in a sensing period, and a converter configured to change a bit of first data input from the outside by using at least one of the deviation information and the deterioration information, and to generate second data, wherein a pixel at an ith horizontal line includes an OLED, a first transistor configured to control an amount of a current that flows from a first power source via the OLED in response to a voltage of a first node, second and third transistors configured to turn on when a scan signal is supplied to an ith scan line, and a fourth transistor configured to turn on when a control signal is supplied to an ith control line.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: September 3, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hai Jung In, Dong Gyu Kim, Bo Yong Chung
  • Patent number: 10394367
    Abstract: In a liquid crystal display device with a touch panel function, a second substrate has detection electrodes of a touch panel, each pixel has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, and the counter electrodes of the respective divided blocks are shared to the respective pixels of a plurality of display lines side by side, the counter electrodes of the respective divided blocks is also used as scanning electrodes of the touch panel, and a driver circuit is provided to apply a counter voltage and a touch panel scanning voltage to the counter electrodes of the respective divided blocks, and the driver circuit can adjust a supply start timing of the touch panel scanning voltage to be applied to the counter electrodes of the respective divided blocks.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: August 27, 2019
    Assignee: Japan Display Inc.
    Inventors: Shuuichirou Matsumoto, Yoshinori Aoki
  • Patent number: 10397149
    Abstract: A method, system and terminal for deleting a sent instant message in messaging communication have been disclosed. The method including: receiving from a first communication terminal, a delete request to delete a sent instant message which has been transmitted from the first communication terminal to a second communication terminal, wherein the delete request comprises an identification which identifies the sent instant message which is to be deleted; determining whether the sent instant message which is to be deleted has already been successfully forwarded to the second communication terminal; and if it is determined that the sent instant message which is to be deleted has already been successfully forwarded to the second communication terminal, forwarding the delete request to the second communication terminal to facilitate deletion of the sent instant message by the second communication terminal.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: August 27, 2019
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Yi Shan, Zhuo Tang, Jun Wang, Zhiyuan Lin, Zhenan Guan, Yuxuan Zhang
  • Patent number: 10361262
    Abstract: A pixel driving circuit using 4T1C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display for the driving current of the OLED, thereby reducing the influence of the threshold voltage imposed on the TFT on the driving current of the OLED and improving the display quality of the OLED display device.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: July 23, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10347207
    Abstract: A scan driver includes a plurality of stages to receive one or more clock signals, each of the plurality of stages to supply a carry signal to a corresponding first output terminal and to supply a scan signal to a corresponding second output terminal, corresponding to a voltage of a corresponding first node, and each of the plurality of stages including a reset unit, the reset unit to initialize the first node, the first output terminal, and the second output terminal, corresponding to a gate start pulse supplied to a corresponding reset input terminal.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 9, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Hee Kim, Ji Hye Lee, Chong Chul Chai
  • Patent number: 10339874
    Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a timing controller. The display panel displays an image. The gate driver outputs a gate signal to the display panel. The data driver includes a plurality of data driving chips which outputs data voltages to the display panel based on data signals. The timing controller adjusts a waveform of the data signals based on a temperature of the data driving chips.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 2, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeonuk Won, Jang-Mi Lee, Wonjin Seo, Hyun-Sik Yoon
  • Patent number: 10332451
    Abstract: The invention discloses an AMOLED pixel driver circuit and pixel driving method, by using a pixel driver circuit of 4T1C or 4T2C structure to effectively compensate threshold voltage of driving TFT in each pixel; through adding a third TFT (T3) and a fourth TFT (T4) and introducing the first scan signal (SEL1) to control the third TFT (T3) and the fourth TFT (T4) to respectively writing the initialization signal (INI) to initialize the gate and the source of the driving TFT in reset phase so as to reduce the complexity of the power supply signal so that the circuit can use DC power supply directly; by adding a second capacitor (C2) to regulate the influence on the source voltage of the driving TFT by the data signal (DATA) so as to reduce the data signal complexity. As a result, the data signal only needs to switch once.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 25, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yuying Cai
  • Patent number: 10319315
    Abstract: The present disclosure discloses a liquid crystal display and a compensation data storage method thereof, the storage method includes: capturing the target compensation data of the display area; determining the data precision corresponding to the target compensation data according to the data range of the target compensation data; adjusting the target compensation data in accordance with the data precision to obtain the storage compensation data of the data range that can be stored in accordance with the preset storage space; storing the storage compensation data and the data precision. In this manner, the present disclosure can improve the accuracy of the mura compensation data and the data signal can be effectively compensated to reduce the mura condition of the panel.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: June 11, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Hua Zhang
  • Patent number: 10311805
    Abstract: A system and method of driving an electrowetting display device including a plurality of sub-pixels are presented. A sub-pixel in the plurality of sub-pixels is determined to be in an open state or a closed state and a target reflectance value is determined for the sub-pixel. For the sub-pixel in the open state, the target reflectance value is determined to be less than a first threshold value, and a reflectance value of the sub-pixel is set to either a minimum reflectance value or the first threshold value. For the sub-pixel in the closed state, the target reflectance value is determined to be less than a second threshold value, and the reflectance of the sub-pixel is set to either the minimum reflectance value or the second threshold value.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 4, 2019
    Assignee: Amazon Technologies, Inc.
    Inventor: Petrus Maria de Greef
  • Patent number: 10297185
    Abstract: A controller, a source driver integrated circuit (IC), a display device, and a signal transmission method thereof. When data is received from the source driver integrated circuit and the received data is recognized, data recognition errors that would otherwise be caused by an asynchronous state between an internal clock and data can be prevented.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: May 21, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hyunll Choi, SockJong Yoo
  • Patent number: 10255985
    Abstract: A supplement resetting module for a gate driver circuit, including a pull-up control unit, a pull-down control unit, a clock signal input end, a predetermined level input end, a first control signal input end, a second control signal input end and a signal output end. A control end of the pull-up control unit is connected to the clock signal input end, an output end of the pull-up control unit is connected to the signal output end, a first control end of the pull-down control unit is connected to the first control signal input end, a second control end of the pull-down control unit is connected to the second control signal input end, an input end of the pull-down control unit is connected to the predetermined level input end, and an output end of the pull-down control unit is connected to the signal output end.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: April 9, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Mingfu Han, Guangliang Shang, Yuanbo Zhang, Yujie Gao, Yan Yan, Yingmeng Miao, Seungwoo Han, Zhihe Jin, Xing Yao, Haoliang Zheng
  • Patent number: 10249030
    Abstract: Obtaining a good image is important for reading indicia. Often, however, objects are not well aligned with an indicia reader's digital imager. This misalignment may lead to images in which an indicium may appear distorted due to perspective. This perspective distortion makes indicia reading difficult. In general, perspective distortion of an imaged object may be corrected using knowledge of the true size, shape, and/or orientation of the physical object. The present invention embraces the use of a dimensioning system to obtain the 3D information necessary to provide this knowledge. Then, using this knowledge, to transform a distorted image of an indicium into a corrected image of the indicium without distortion. This corrected image may then be processed to read the undistorted indicium.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 2, 2019
    Assignee: HAND HELD PRODUCTS, INC.
    Inventors: Scott McCloskey, Ryan Andrew Lloyd
  • Patent number: 10242610
    Abstract: The present application discloses a detection system for image sticking of display panel and method thereof, includes obtaining the display panel image to be detecting the image sticking; obtaining the image display portion of the display panel in the display panel image; performing Fourier transform to the image display portion, obtaining a first spectral energy value with characteristic frequency corresponding to the image sticking in the image display portion, and a second spectral energy value of the reference frequency in the image display portion; determining the ratio of the first spectral energy value and the second spectral energy value is exceeding the numerical range of the corresponded qualified detection, if beyond, it is judged as disqualified. By the method described above, the present application can solve the conventional image sticking judgment based on human subjectivity, accurate judgment and objectively evaluation of severity the image sticking of the display panel.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: March 26, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Yanxue Wang, Lixuan Chen, Jing Zhang, Yun Zhang, Yansong Li
  • Patent number: 10235922
    Abstract: A display device includes display panel component and a signal controller. The display panel components include a plurality of pixels arranged in a matrix, at least two data drivers, and data lines connecting to each of the data driver, and the pixels connect to the corresponding data line. The signal controller connects to the two data drivers to obtain two data voltages from data lines connecting to two adjacent data drivers when the pixels display mono-color images having the same grayscale. The signal controller adjusts gamma codes of the two adjacent data drivers in accordance with the obtained the data voltages until the data voltages of the data lines respectively connected to the two adjacent data drivers are the same. In view of the above, the screen split issue caused by adopting at least two data driver may be eliminated so as to enhance the display performance.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: March 19, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Lei Hu
  • Patent number: 10223987
    Abstract: A method, computer program product, and system perform DC balancing for a variable refresh rate display panel based on regions. A first portion of a first image is displayed on a first region of a screen of a display device using a spatial inversion pattern and a first polarity of a temporal polarity pattern for the first region of the screen of the display device. A second polarity of a second temporal polarity pattern for a second region of the screen of the display device is determined and a second portion of the first image is displayed on the second region of the screen of the display device using the spatial inversion pattern and the second polarity of the second temporal polarity pattern.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 5, 2019
    Assignee: NVIDIA Corporation
    Inventor: Tom Verbeure
  • Patent number: 10210783
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a scan-line period for scanning one of the scan lines. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits according to the scan-line period for scanning one of the scan lines, wherein the scan-line period comprises a display data period and a test data period. In the test data period, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: February 19, 2019
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Patent number: 10209556
    Abstract: A method and system for forming filter elements on a plurality of display substrates using a digital imaging system operable to selectively deposit filter material at a plurality of deposition locations is disclosed. The method involves receiving orientation information defining a disposition of a plurality of pixels associated with the at least one display substrate, identifying pixels in the plurality of pixels that are to receive filter material for forming a filter element on the pixel, selecting deposition locations within each of the identified pixels in accordance with the orientation information to meet an alignment criterion associated with placement of the filter element within the pixel, and controlling the digital imaging system to cause deposition of the filter material at the selected deposition locations.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: February 19, 2019
    Assignee: E Ink Corporation
    Inventors: Gil Rosenfeld, Eran Elizur, Gregory Dean Peregrym, David Victor Marcolin, Guy Sirton
  • Patent number: 10198904
    Abstract: A method of operating an electronic gaming machine includes generating an interactive game environment in accordance with game data, the interactive game environment having a viewing area may include a plurality of visible game components as a subset of the interactive game environment, displaying the viewing area with the plurality of visible game components, monitoring eye gaze of a player to collect player eye gaze data, determining a location of the eye gaze of the player relative to the viewing area using the player eye gaze data, and in response to the location of the eye gaze of the player relative to the viewing area, changing a resolution of a portion of the viewing area other than a portion of the viewing area corresponding to location of the eye gaze of the player on the viewing area. Related electronic gaming machines are also disclosed.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: February 5, 2019
    Assignee: IGT CANADA SOLUTIONS ULC
    Inventors: David Froy, Edward Bowron, Reuben Dupuis, Vicky Leblanc, Karen Van Niekerk, Aaron Corey, Stefan Keilwert
  • Patent number: 10199437
    Abstract: An organic light emitting diode (OLED) display includes first pixels, second pixels, and third pixels. The OLED display includes a first column including a plurality of the first pixels alternately arranged with a plurality of the second pixels; and a second column adjacent to the first column and comprising a plurality of the third pixels. One of the first pixels and one of the second pixels in the first column correspond to more than two of the third pixels in the second column. Rendering driving is applied such that high resolution of more than 350 pixels per inch (PPI) may be realized without deterioration of the image quality while the total number of pixels is smaller than in a pentile matrix arrangement.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: February 5, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Gun-Shik Kim
  • Patent number: 10186224
    Abstract: The present disclosure relates to a pixel structure including a data line, a gate, a pixel electrode, and a common electrode line driving the gate. A capacitor configured between the common electrode line and the pixel electrode is a storage capacitance. The common electrode line and the gate are short-connected. The present disclosure also relates to an operation method of the pixel structures and an array substrate. In view of the above, the driving capability of the common electrode line is enhanced. Second, the WOA trace of the common electrode line may be decreased. Third, the space of the liquid crystal panel may be saved.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: January 22, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Shuai Chen
  • Patent number: 10186188
    Abstract: A method and apparatus are described for providing simultaneous display views from a display of a portable electronic device at multiple angles. The display includes a first set of light-emitting diodes positioned in a display field and oriented to produce a first visual data depiction viewable at a first perspective angle. The display also includes a second set of light-emitting diodes co-positioned in the display field with the first set of light-emitting diodes, oriented to produce a second visual data depiction viewable at a second perspective angle, and oriented to make the second visual data depiction non-viewable from the first perspective angle. The second perspective angle is different than the first perspective angle and the second visual data depiction is different than the first visual data depiction.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: January 22, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Alejandro G. Blanco, Scott H. Richards, Chi T Tran
  • Patent number: 10170039
    Abstract: A method for correcting an organic EL display including a volatile memory (MV), a non-volatile memory having a slower write speed than that of the volatile memory, and a control unit, the method to be performed by the control unit includes: performing cumulative processing for updating cumulative values in the volatile memory every first period; performing transfer processing for transferring the cumulative values from the volatile memory to the non-volatile memory every second period longer than the first period; delaying timing of the transfer processing in part of the display pixels according to the write speed of the second memory; and delaying start timing of the cumulative processing in the part of the display pixels according to the timing of the transfer processing, or switching an order of transfer of the cumulative values in the transfer processing between a first order and the reverse order of the first order.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 1, 2019
    Assignee: JOLED INC.
    Inventor: Kazuyuki Ishida
  • Patent number: 10170051
    Abstract: The invention provides driving methods for OLED display panel. One method uses an improved driving circuit: disposing a sensing line (S(a)) corresponding to two columns of pixels (P), the a-th sensing line (S(a)) synchronously detecting threshold voltages of the light-emitting sub-pixels of odd-numbered rows in (2a?1)-th column pixels (P) and of even-numbered rows in 2a-th column pixels (P); or, the a-th sensing line (S(a)) synchronously detecting threshold voltages of the light-emitting sub-pixels of even-numbered rows in (2a?1)-th column pixels (P) and of odd-numbered rows in 2a-th column pixels (P); to perform detection on half of the sub-pixels in OLED display panel, to reduce the number of sensing lines by half to save cost. Another method improves the driving signal timing sequence to reduce the number of detection times of the sensing lines by half with obtaining the threshold voltages of all the sub-pixels of the OLED display panel.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: January 1, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Yufeng Jin
  • Patent number: 10163386
    Abstract: Disclosed is a display device that can rapidly recover from a fail situation. The display device includes: a display panel; a source drive IC configured to supply a data signal to the display panel and including a calibrating unit; a timing controller configured to supply a data control signal and a frame data to the source drive IC; and a common bus line formed between the source drive IC and the timing controller. The calibrating unit sets and stores a calibration value in response to the data control signal during an initialization period before receiving the frame data from the timing controller, and transmits the calibration value to the timing controller through the common bus line.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: December 25, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Gyu Lee, Seon Ki Kim, Kyung Youl Min, Hee Sun Ahn
  • Patent number: 10154217
    Abstract: An imaging apparatus includes an imaging unit that captures an image of a subject and outputs imaging signals; an image signal generation unit that generates image signals indicative of images to be displayed in respective lines of a display unit based on the imaging signals, and outputs the generated image signals to the display unit; and a timing control unit that controls timings, in which the image signal generation unit outputs the image signals, based on an output completion signals indicative of lines corresponding to the image signals, which are completely output from the image signal generation unit to the display unit, and write completion signals indicative of lines corresponding to the image signals which are generated by the image signal generation unit.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 11, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Ryuichi Shiohara
  • Patent number: 10152930
    Abstract: A driving method for a display panel and a driving device are disclosed. The method includes: detecting that if a current data frame satisfies a preset switching condition of switching a first polarity mode to a second polarity mode; if the current data frame satisfies a preset switching condition, obtaining a polarity input signal corresponding to a previous data frame; obtaining a data compensation value corresponding to each sub-pixel according to the polarity input signal and a position of each sub-pixel of the current data frame; under the second polarity mode, after superimposing a value of each sub-pixel of the current data frame and the data compensation value corresponding to each sub-pixel, outputting to a display panel. Accordingly, the present invention can avoid an instantaneous flicker when switching from the first polarity mode to the second polarity mode.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: December 11, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Lei Sun, Li-wei Chu, Jianjun Xie
  • Patent number: 10147374
    Abstract: A liquid crystal display device is configured to create an aesthetic effect while on low power by performing a single color driving operation in standby mode. The liquid crystal display device further includes a standby mode controller which is provided in the timing controller, in addition to the usual data driver, and runs in standby mode to perform the standby mode function with minimum power consumption.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: December 4, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: NamKon Ko, HeeJung Hong, JinWoo Cha
  • Patent number: 10127857
    Abstract: A temperature estimating apparatus includes an average data outputting circuit configured to output average data of image data displayed on a display panel. The temperature estimating apparatus further includes a change amount outputting circuit configured to determine a change amount of the average data, and to output an average data change amount. The temperature estimating apparatus additionally includes a luminance outputting circuit configured to convert the average data change amount to a luminance, and to output the luminance. The temperature estimating apparatus further includes a temperature sensor configured to sense an ambient temperature of the display panel, and to output the ambient temperature. The temperature estimating apparatus additionally includes a current temperature outputting circuit configured to determine a current temperature of the display panel based on a previous temperature of the display panel, the luminance and the ambient temperature.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: November 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin-Ho Lee, So-Young Kim, Woo-Seok Jang, Man-Bok Cheon, Seung-Ho Park
  • Patent number: 10109253
    Abstract: A display apparatus includes a controller which generates control signals and outputs image data, a compensating circuit which receives a portion of the control signals from the controller and generates a compensation signal, a voltage generating circuit which converts an input voltage to a driving voltage and increases or decreases a voltage level of the driving voltage in a frame period in response to the compensation signal, a driving part which receives the control signals and the image data from the controller and receives the driving voltage from the voltage generating circuit to generate a panel driving signal, and a display panel which receives the panel driving signal from the driving part to display an image.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: October 23, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jongjae Lee, Ikhyun Ahn, Bongim Park, Dongwon Park
  • Patent number: 10095355
    Abstract: The present invention discloses an inverting circuit, a driving method thereof, a touch display panel and a touch display device. The inverting circuit includes an input module and an output module, the input module is used for controlling a potential of the first node, and the output module is used for controlling, under the control of the potential of the first node, an output signal of the first output terminal according to input signals of the first input terminal, the third voltage terminal and the third signal terminal. In the technical solutions provided by the present invention, a light-emitting control signal is switched off in a touch stage by means of time-sharing driving to lower the capacitance to ground of the touch electrode, so that resistive and capacitive load of the touch electrode is reduced, touch driving frequency is increased, and touch accuracy is thus improved.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: October 9, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Shengji Yang, Xue Dong, Hailin Xue, Xiaochuan Chen, Yingming Liu, Lingyu Sun
  • Patent number: 10068528
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a gate driving circuit and a sensing circuit. The gate driving circuit may scan the scan-lines during a plurality of scan-line periods within a frame period. The sensing circuit is coupled to a plurality of pixel circuits. A corresponding scan-line period of the scan-line periods is divided into a test data period and a display data period. In the test data period, the sensing circuit controls a corresponding pixel circuit to receive the test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the sensing circuit controls the corresponding pixel circuit to receive the display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: September 4, 2018
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Patent number: 10062357
    Abstract: Disclosed is an imaging directional backlight including an array of light sources, and a control system arranged to provide variable distribution of luminous fluxes, scaled inversely by the width associated with the respective light sources in the lateral direction, across the array of light sources. The luminous intensity distribution of output optical windows may be controlled to provide desirable luminance distributions in the window plane of an autostereoscopic display, a directional display operating in wide angle 2D mode, privacy mode and low power consumption mode. Image quality may be improved and power consumption reduced.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: August 28, 2018
    Assignee: RealD Spark, LLC
    Inventors: Graham J. Woodgate, Michael G. Robinson, Jonathan Harrold
  • Patent number: 10043486
    Abstract: The present invention provides an electronic device, including a storage module, a sensing module, a processing module, a driving module, and a display module. The storage module stores a plurality of frames. The sensing module outputs a sensing signal according to an action by the electronic device. The processing module outputs a transmitting signal according to the sensing signal. The transmitting signal corresponds to a first screen-refresh rate. The driving module determines the subsequent frame according to either the transmitting signal or a driving signal before the current frame ends. The driving signal corresponds to a second screen-refresh rate. The display module displays a display picture corresponding to the subsequent frame according to the subsequent frame and either the first screen-refresh rate or the second screen-refresh rate.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: August 7, 2018
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Xuecheng Zhang, Weiguo Li
  • Patent number: 10037731
    Abstract: A driver includes a power supply circuit including a voltage boosting circuit that generates a boosted voltage by performing a voltage boosting operation, and a driving circuit that receives a power supply from the power supply circuit, and samples a driving voltage to drive a display panel. The voltage boosting circuit has a voltage boosting unit having a voltage boosting transistor, and a voltage boosting control circuit that outputs a voltage boosting clock signal to the voltage boosting unit. The voltage boosting control circuit stops the voltage boosting clock signal in a first period that includes a timing of an end of a sampling period of the driving circuit.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: July 31, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Shigeaki Kawano
  • Patent number: 10019844
    Abstract: An electronic display is driven to compensate for non-uniformity in a display property across display regions of the electronic display. Non-uniformity measures are determined for a set of electronic displays. A transformation is determined for converting the non-uniformity measures to transformed non-uniformity representations having fewer dimensions than a total number of the display regions in an electronic display. Using the transformation, a transformed non-uniformity representation for the electronic display is generated and stored, and an inverse transform is determined and stored. A system containing the electronic display generates correction values for the display regions by applying the inverse transformation to the transformed non-uniformity representation. Input display data for the electronic display is modified according to the generated correction values for the display regions. The electronic display is driven according the modified display data.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: July 10, 2018
    Assignee: Oculus VR, LLC
    Inventors: Shizhe Shen, Evan Mark Richards
  • Patent number: 9997135
    Abstract: A method of producing a color image using a display comprised of pixels comprising red, green and blue primary color subpixels. The method comprises reducing the color gamut and increasing the brightness of the image relative to a base level, decreasing power to the display to reduce the brightness of the image, restoring color to the image to approximately the base level by modifying image pixel data using a three-dimensional lookup table to produce output image pixel data, and communicating the output image pixel data to the display. The display may be an LCD display, an LED display, an OLED display, a plasma display, and a DMD projector. Reducing the color gamut and increasing the brightness of the image may be accomplished by adding white to the image. The white may be added adaptively according to an algorithm by which the amount of white added decreases with increasing color saturation.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: June 12, 2018
    Assignee: Entertainment Experience LLC
    Inventors: James R. Sullivan, Rodney L. Heckaman
  • Patent number: 9997116
    Abstract: An integrated circuit device that drives an electro-optical panel using a driving waveform which is set in a plurality of phases includes: a driving voltage generation unit that operates while receiving a supply of a power supply voltage generated by a power supply circuit, and generates a plurality of driving voltages to be applied to a plurality of electrodes in the electro-optical panel in each of a plurality of phases, in accordance with display data; and a power supply control unit that sets current supply capability of the power supply circuit to a first level synchronously with a timing of start of a phase, and sets the current supply capability to a second level, which is lower than the first level.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: June 12, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kota Muto, Shigeaki Kawano
  • Patent number: 9959812
    Abstract: The present invention provides a method of compensating AMOLED power supply voltage drop, comprising: step 1, measuring a brightness value L of each light-emitting element line of a panel by starting from a COF end of the AMOLED; step 2, drawing a brightness variation curve of the each light-emitting element line caused by IR Drop according to the brightness value L of the each light-emitting element line measured in the step 1; step 3, calculating a voltage value for compensation of every two adjacent light-emitting elements from difference values between the brightnesses of every two adjacent light-emitting elements according to a ratio conversion between a brightness difference ?L and a voltage difference ?V, i.e.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: May 1, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Taijiun Hwang, Jihshiang Lee
  • Patent number: 9953565
    Abstract: An organic light emitting diode display and a method for driving the same are disclosed. The organic light emitting diode display includes a display panel including a plurality of pixels, a display panel driver configured to drive signal lines of the display panel, and a timing controller configured to divide one frame into a plurality of subframes, divide data of an input image at each bit, map the data of the input image to the plurality of subframes, control an operation of the display panel driver, and adjust data addressing speeds of the plurality of subframes for adjusting the emission times of the upper and lower display lines of the display panel differently.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: April 24, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Joonhee Lee, Sunghoon Kim, Jongmin Park
  • Patent number: 9953573
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a display panel including a plurality of pixels, each of the pixels including an OLED and a driving transistor, the OLED configured to emit light based on an emission current, the driving transistor configured to control the emission current based on a data signal applied to a gate electrode of the driving transistor. The display also includes a power supply configured to apply a driving voltage to the pixels, apply an initialization voltage to a first electrode of the OLED, control the driving voltage within a first range, and control the initialization voltage such that a voltage difference between the driving voltage and the initialization voltage is substantially constant.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: April 24, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si-Beak Pyo, Jung-Kook Park, Sang-Min Lim
  • Patent number: 9912940
    Abstract: A stereoscopic image display device includes a display panel, a scan driver, and a data driver. The display panel includes pixels coupled to data lines and scan lines. The pixels do not emit light during a data pre-addressing period and pixels emit light during a data addressing period. The scan driver supplies scan signals to the scan lines. The data driver supplies data voltages to the data lines in synchronization with the scan signals. The scan driver supplies first scan signals to the scan lines during the data pre-addressing period, and supplies second scan signals to the scan lines during the data addressing period. Each of the first scan signals has one pulse, and each of the second scan signals has a plurality of pulses.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: March 6, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Taek Kim, Bong-Hyun You
  • Patent number: 9911384
    Abstract: A scan driver of an organic light emitting diode (OLED) display device includes a plurality of sequentially-connected stages each connected to a plurality of pixels through a plurality of first-scan lines and a plurality of second-scan lines. Each stage of the sequentially-connected stages includes a common driver and a sub-driver unit. The common driver is configured to concurrently provide a common first-scan signal to the first-scan lines of the stage in response to at least a first initialization signal and a second initialization signal. The sub-driver unit is configured to serially provide second-scan signals to the second-scan lines of the stage in response to a plurality of output enable signals, the first-scan signal, and one of the first initialization signal and the second initialization signal. An order of the serial providing of the second-scan signals to the second-scan lines is dynamically configurable based on the output enable signals.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: March 6, 2018
    Assignee: Samsung Dispaly Co., Ltd.
    Inventor: Su-Hyeong Park