Regulating Means Patents (Class 345/212)
  • Patent number: 11183139
    Abstract: A display device includes: a first pixel connected to a first scan line and a data line; a second pixel connected to a second scan line and the data line; and a data driver connected to the data line. The data driver includes: a data voltage generator which applies a data voltage corresponding to a grayscale value of the first pixel to the data line when a scan signal of a turn-on level is applied to the first scan line; and an off voltage generator which applies an off voltage corresponding to a black grayscale value to the data line when a scan signal of a turn-on level is applied to the second scan line, in a first mode.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: November 23, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Tae Kim, Ji Hye Kim, Jae Hyeon Jeon
  • Patent number: 11175718
    Abstract: This document describes techniques and systems that enable a mobile device-based radar system for applying different power modes to a multi-mode interface. The techniques and systems include a user device having a radar system, and an interaction manager. The radar system generates a radar field, provides radar data, and operates at one of various different radar-power states. The user device analyzes the radar data to detect a presence or movement of a user within the radar field. Responsive to the detection, the radar system changes from a first radar-power state to a second radar-power state. Based on this change, the interaction manager selects a power mode, for a multi-mode interface, that corresponds to the second radar-power state, and applies the selected power mode to the multi-mode interface to provide a corresponding display via a display device.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: November 16, 2021
    Assignee: Google LLC
    Inventors: Eiji Hayashi, Vignesh Sachidanandam, Leonardo Giusti, Jaime Lien, Patrick M. Amihood, Ivan Poupyrev
  • Patent number: 11170695
    Abstract: The present disclosure provides a shift register unit, a driving method thereof, a gate drive circuit, and a display device, and relate to the field of display technology. When a user's demand is changed, it is not necessary to regulate a pulse width of a signal inputted to a pixel circuit row by row, and a signal outputted from the shift register unit to the pixel circuit is stable. The shift register unit includes a first input circuit, a first output circuit, a second input circuit, a second output circuit, and a stabilizing circuit. The stabilizing circuit is configured to, when the first output circuit outputs a signal to a signal output terminal, stabilize a potential of a second node so that no signal is outputted from the second output circuit; or, when the second output circuit outputs a signal to the signal output terminal, stabilize a potential of a first node so that no signal is outputted from the first output circuit.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: November 9, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventor: Bo Wang
  • Patent number: 11170694
    Abstract: A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: November 9, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jin Lee, Jae Keun Lim, Hong Soo Kim, Jinyoung Roh, Sehyuk Park
  • Patent number: 11171564
    Abstract: A power provider includes: a first power source configured to receive an input voltage and to provide a first power voltage to a first output terminal; a low voltage detection circuit configured to provide a low voltage detection signal of an enable level in response to the input voltage being less than a reference low voltage, and to provide the low voltage detection signal of a disable level in response to the input voltage being greater than the reference low voltage; a first soft start circuit configured to connect the first input terminal to the first output terminal in response to a first control signal for the first power source being changed from a disable level to an enable level; and a first boost converter configured to convert the input voltage to provide the first power voltage greater than the input voltage to the first output terminal.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: November 9, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kwang Hun Kang
  • Patent number: 11167288
    Abstract: The present disclosure relates to digital microfluidic systems. Particularly, aspects are directed to a digital microfluidic system that includes a droplet chip having a substrate, a plurality of electrodes and corresponding plurality of conducting vias or embedded conductive posts formed in the substrate, and a dielectric layer formed over the plurality of electrodes; and a control chip having a substrate, a plurality of transistors and corresponding wiring layers formed in the substrate, and a plurality of contacts formed over the plurality of transistors. Each of the plurality of contacts is electrically connected to a corresponding transistor of the plurality of transistors, and one or more of the plurality of contacts is removably connected to one or more of the plurality of conducting vias or embedded conductive posts such that one or more of the plurality of transistors are electrically connected to one or more of the plurality of electrodes.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 9, 2021
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Philip Gach, Manasi Raje, Anup Singh
  • Patent number: 11164511
    Abstract: A display panel includes a first scan driving circuit, a second scan driving circuit, and a third scan driving circuit. The first scan driving circuit is configured to generate a first gate scan signal to control programming of a first display line in a first horizontal sync period that includes a long horizontal blank (LHB) period. The second scan driving circuit is configured to generate a first dummy gate scan signal to control initialization of a second display line in the LHB period of the first horizontal sync period. The third scan driving circuit is configured to generate a second gate scan signal to control programming of the second display line in a second horizontal sync period that follows the first horizontal sync period.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: November 2, 2021
    Assignee: Synaptics Incorporated
    Inventors: Atsushi Maruyama, Kazuhiro Okamura, Daisuke Ito
  • Patent number: 11158227
    Abstract: A wire component includes a plurality of working signal lines and a plurality of transmitting lines. The working signal lines are configured to respectively provide a plurality of working signals to a driving circuit, and phases of the working signals at least partially lag each other sequentially. The transmitting lines are configured to respectively transmit the working signals, and a portion of the transmitting lines crosses the working signal lines. A first working signal line is configured to provide a first working signal; a second working signal line is configured to provide a second working signal; the first working signal immediately lags the second working signal, and the first working signal line and the second working signal line are arranged with another working signal line therebetween.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: October 26, 2021
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Yen-Wei Yeh, Chin-Hsien Chou, Wei-Li Lin
  • Patent number: 11158226
    Abstract: The present disclosure provides a gate driving unit and method, a gate driving module and circuit, and a display device. The gate driving unit includes: an external compensation control signal output terminal, a gate driving signal output terminal, an external compensation control signal output circuit, a gate driving signal output circuit, a pull-up control circuit and a pull-down node control circuit.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: October 26, 2021
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11158251
    Abstract: An organic light emitting diode (OLED) pixel driving circuit and a display panel are disclosed. The OLED pixel driving circuit is a 7T1C type pixel driving circuit consisting of a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, a capacitor, and an organic light emitting diode. Each of the first, second, third, fourth, fifth, sixth, and seventh transistors has a control end, a first end, and a second end, wherein the control end and the second end of the seventh transistor are coupled, the control end and the second end of the fourth transistor are coupled, and the second end of the fourth transistor and the second end of the seventh transistor are not connected to each other.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: October 26, 2021
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Caiqin Chen
  • Patent number: 11152314
    Abstract: An integrated circuit having a plurality of field-effect transistors, wherein at least a proportion of the field-effect transistors implement a plurality of logic cells, a substrate, a well which is arranged in the substrate, and a supply circuit which is designed to connect the well to a supply potential, wherein the supply circuit is constituted by one or more field-effect transistors of the plurality of field-effect transistors.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: October 19, 2021
    Assignee: Infineon Technologies AG
    Inventors: Albert Missoni, Stefan Schneider
  • Patent number: 11145236
    Abstract: A display device includes: a display unit including a plurality of pixels to display an image according to a driving voltage; a data driver to provide data signals to the plurality of pixels; a gamma voltage generator to provide a plurality of grayscale voltages to the data driver; and a reference voltage generator to provide a first reference voltage and a second reference voltage to the gamma voltage generator. The gamma voltage generator is to generate the plurality of grayscale voltages by dividing the first reference voltage and the second reference voltage, and the reference voltage generator is to generate a sensing driving voltage by measuring the driving voltage from the display unit, and to generate the first reference voltage and the second reference voltage by utilizing the sensing driving voltage and a reference driving voltage.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: October 12, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Eun Ryeol Baek
  • Patent number: 11145244
    Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: October 12, 2021
    Inventors: Seok Gyu Ban, Kyung Man Kim, Wook Lee
  • Patent number: 11132951
    Abstract: A pixel circuit, a pixel driving method and a display device are provided. The pixel circuit includes a light-emitting element, a driving unit, a light-emitting control unit, a driving control unit, an energy storage unit, a first reset unit and a second reset unit, the first reset unit is configured to write a first voltage output by a first voltage line into a first terminal of the driving unit under control of the reset control line; the second reset unit is configured to write an initial voltage output by an initial voltage line into a control terminal of the driving unit under control of the reset control line; the driving unit is configured to drive the light-emitting element to emit light under control of the control terminal of the driving unit.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: September 28, 2021
    Assignees: MIANYANG BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yinglong Huang, Bingwei Yang, Wenbao Gao
  • Patent number: 11134188
    Abstract: An electronic device, method, and computer program product provide detecting entry of an image capturing device of the electronic device into an image capture mode. In response to detecting entry, a controller of the electronic device detects, via at least one of: (i) the image capturing device; and (ii) the microphone, a first external input that alerts a subject that an image of the subject is about to be captured by the image capturing device. In response to detecting the first external input, the controller enables the electronic device to monitor for detection by one of: (i) the image capturing device; and (ii) the microphone of a second external input. The second external input is associated with the subject being ready to have an image of the subject captured. In response to detecting the second external input, the controller activates recording of image data via the image capturing device.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: September 28, 2021
    Assignee: Motorola Mobility LLC
    Inventors: Zhengping Ji, Olivier D. Meirhaeghe, Rachid Alameh, Amit Kumar Agrawal
  • Patent number: 11132968
    Abstract: A gate on array (GOA) circuit and a built-in touch display panel are provided. The GOA circuit collects a scan signal from a GOA unit, detects whether the scan signal from the GOA unit is abnormal in order to identify an abnormal GOA unit, and then restores a scan signal from the abnormal GOA unit.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 28, 2021
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Di Zhang
  • Patent number: 11132938
    Abstract: A display device includes: pixels; and a power converter for receiving a first voltage, converting the first voltage to a second voltage, and providing an output terminal with the second voltage to control the pixels. The power converter includes: a first variable load connected to the output terminal of the power converter; a first comparator for providing a comparison result by comparing a difference between a first feedback voltage of the first voltage and a second feedback voltage of the second voltage; and a gap controller for controlling a magnitude of the first variable load to maintain the difference between the first voltage and the second voltage to be greater than or equal to a gap, based on the comparison result received from the first comparator.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: September 28, 2021
    Inventor: Yang Uk Nam
  • Patent number: 11127350
    Abstract: A pixel circuit includes a first transistor having a bottom gate and a top gate, a drain supplied with a high-level power-supply voltage, and a source coupled to a light-emitting diode (LED). The bottom gate is provided with a first voltage signal and the source is provided with a second voltage signal in a compensation period during which a present value of a threshold voltage of the first transistor is sensed at the source and a third voltage signal is determined based on the present value of the threshold voltage. The top gate is configured to be provided with the third voltage signal in an emission period to reduce the present value of the threshold voltage.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: September 21, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili Gai, Zhongyuan Wu, Baoxia Zhang, Ling Wang, Yicheng Lin, Quanhu Li, Fang Liu
  • Patent number: 11119601
    Abstract: An electronic device is provided. The electronic device includes a display for receiving a touch input, a communication circuit, at least one processor, and a memory. The memory stores instructions executable by the at least one processor to detect whether the electronic device is in communication with an external display device via the communication circuit, transmit data for rendering an extended user interface on the external display device to the external display device via the communication circuit, detect whether the electronic device is connected with an external pointing device via the communication circuit, and, when the external pointing device is not connected to the electronic device, provide at least a portion of the display for use as a pointing device.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 14, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Pyo Lee, Young Kyu Seon, Ga Jin Song, Dong Ho Jang, Hyung Sup Byeon, Yong Joon Jeon
  • Patent number: 11116254
    Abstract: An electronic vapor provision system is provided including a pressure drop or air flow sensor for monitoring inhalation by a user through the electronic vapor provision system; and a control unit for detecting the start and end of inhalation based on readings from the sensor. The control unit is configured to monitor the cumulative period of inhalation (Ti) over a predetermined window (Tw); and transfer the electronic vapor provision system to a sleep mode if the cumulative period (Ti) exceeds a predetermined threshold (Th).
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: September 14, 2021
    Assignee: Nicoventures Trading Limited
    Inventors: Christopher Lord, Martin Mullin
  • Patent number: 11120755
    Abstract: Disclosed are a driving method, a driving device and a driving device of a display panel. The method comprises the following steps of: performing positive driving on a first adjacent sub-pixel of the two adjacent sub-pixels in a second direction in a first time interval, and performing negative driving on a second adjacent sub-pixel of the two adjacent sub-pixels in a second direction in a second time interval, wherein the duration of the first time interval is different from that of the second time interval. Obviously, due to the difference between the positive driving duration and the negative driving duration, the charging ability is different, forming a high-low voltage pixel unit interspersed arrangement, thus improving the color shift.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: September 14, 2021
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Chihtsung Kang
  • Patent number: 11112628
    Abstract: A charge pull-out period is set after power off, and an all-on control signal is set to a high level in the charge pull-out period. A high-level voltage which is output to a scanning line drive circuit formed on a liquid crystal panel is kept at a high level even after power off until a middle of the charge pull-out period. A common electrode control circuit for connecting a common electrode to a ground when the all-on control signal is at the high level and the high-level voltage is at an operation level is configured using two resistors, a NOT circuit, and two FETs, and is provided to a liquid crystal display device. With this, a liquid crystal display device which can lower a common electrode voltage to a ground level when power off and can prevent burn-in after power on is provided.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: September 7, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuta Ueyama, Masami Ozaki, Hideki Morii
  • Patent number: 11107407
    Abstract: Embodiments of the present disclosure provide a method for driving a pixel circuit, a pixel circuit, and a display panel. In this method, a zero-voltage signal is provided to a data signal terminal. A first ON signal is provided to a first scan signal terminal, a second ON signal is provided to a second scan signal terminal, and a first level data signal or the zero-voltage signal is provided to the data signal terminal. Next, a decreased data signal, a second level data signal and the zero-voltage signal are provided to the data signal terminal.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: August 31, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haixia Xu, Yue Wu, Can Yuan, Wenchao Bao
  • Patent number: 11107422
    Abstract: A display device includes a display panel including a plurality of pixels and a display panel driver configured to drive the display panel. Here, the display panel driver is configured to receive input image data, to drive the display panel at a first driving frequency when the input image data corresponds to a moving image, and to select one of a plurality of flicker lookup tables based on the first driving frequency and drive the display panel at a second driving frequency based on the flicker lookup table when the input image data corresponds to a still image.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: August 31, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jin Lee, Sangan Kwon, Hui Nam, Jinyoung Roh, Sehyuk Park
  • Patent number: 11107404
    Abstract: A display device includes a display panel having a plurality of gate lines, a plurality of data lines, and a plurality of subpixels; a gate driver circuit driving the plurality of gate lines; a data driver circuit driving the plurality of data lines; and a timing controller controlling signals applied to the gate driver circuit and the data driver circuit, wherein the timing controller controls the data driver circuit for a black data to be applied to at least one of designated subpixels among the plurality of subpixels, and controls the gate driver circuit for a gate signal, which is a signal for sensing a characteristic of a driving transistor of the designated subpixel, to be applied in an interval between times at which the black data are applied, such that the gate signal does not overlap the black data.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: August 31, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Joon-Min Park
  • Patent number: 11100879
    Abstract: Disclosed are a driving circuit of a display panel, a display apparatus, and a driving method of a display panel, as well as a computer storage medium. The driver circuit includes a sub-pixel unit and a driving line, the driving line is connected to first ends of a plurality of sub-pixel units. The driver circuit further includes a compensation unit, the driving line is defined with the compensation unit. The compensation unit includes: a voltage compensation module, configured to provide a compensation voltage for the output of the driving line; and a switch module, the switch module controlling the voltage compensation module to discharge, when the driving line outputs a signal.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: August 24, 2021
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd. :
    Inventor: Dongsheng Guo
  • Patent number: 11100864
    Abstract: Provided are a data driver and a display driving circuit including the data driver. A data driver configured to drive a display panel including a plurality of subpixels connected to a plurality of sensing lines includes: a plurality of sample-and-hold circuits configured to perform a sampling operation on a plurality of sensing signals received via the plurality of sensing lines; a switching block configured to provide a first sensing signal among the plurality of sensing signals to a first sample-and-hold circuit in a first sensing period, and in a second sensing period, provide the first sensing signal to a second sample-and-hold circuit not being adjacent to the first sample-and-hold circuit in a second sensing period; and a converting circuit configured to generate a plurality of sensing values by amplifying and analog-to-digital converting on outputs of the plurality of sample-and-hold circuits.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hajun Lee, Jeongah Ahn, Jiyong Jeong
  • Patent number: 11100306
    Abstract: A display panel and a display device are provided in the present disclosure. The display panel includes a display region and a non-display region surrounding the display region. The display region includes a plurality of fingerprint recognition units. The non-display region includes a drive chip and Q first gate drive circuits, where the drive chip includes a first encoding circuit including M signal output terminals. The non-display region further includes a first decoding circuit and M first signal lines. The first decoding circuit includes M signal input terminals and N signal output terminals, where 1?M<Q?N, and M, Q, N are positive integers. A signal output terminal of the first encoding circuit is electrically connected to a corresponding signal input terminal of the first decoding circuit through one first signal line; and each first gate drive circuit is connected to one signal output terminal of the first decoding circuit correspondingly.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: August 24, 2021
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Xiaoxiao Wu, Jiaqian Wu, Min Huang, Guozhao Chen
  • Patent number: 11100834
    Abstract: A gate driving sub-circuit, a driving method and a gate driving circuit are provided. The gate driving sub-circuit includes an input signal end, a shift signal output end, an inverted phase shift signal output end, a positive phase shift clock signal input end, an inverted phase shift clock signal input end, a first control clock signal input end, a second control clock signal input end, a first gate driving signal output end, a second gate driving signal output end, a shift register circuit and a control output circuit. The control output circuit includes a first control output sub-circuit and a second control output sub-circuit.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: August 24, 2021
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yishan Fu, Jun Fan, Fuqiang Li, Jiguo Wang
  • Patent number: 11094259
    Abstract: A display device includes a display panel includes a plurality of pixels driven by a first power voltage and a second power voltage. A display panel driving circuit is configured to receive image data from an external device, output a first voltage control signal for generating an analog supply voltage based on an on-pixel ratio (OPR) of the image data, and output a second voltage control signal for generating the first power voltage and the second power voltage. A DC-DC conversion circuit is configured to generate the analog supply voltage based on the first voltage control signal and generate the first power voltage and the second power voltage based on the second voltage control signal.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: August 17, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hun-Bae Kim, Hyun-Suk Kang, Jihoon Kim
  • Patent number: 11094264
    Abstract: A display device includes: a display panel having a plurality of pixels coupled to respective ones of first to nth (where n is a natural number of 1 or more) scan lines; a scan driver having a plurality of stages to supply a scan signal to the first to nth scan lines; and a timing controller to provide a clock signal to the scan driver, the timing controller controlling the scan driver by controlling an overdriving pulse of the clock signal. A first overdriving pulse of the clock signal corresponding to a first scan signal is different from an nth overdriving pulse of the clock signal corresponding to the nth scan signal.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 17, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hai Jung In
  • Patent number: 11094247
    Abstract: A driving apparatus of a light emitting diode (LED) display device is provided. The driving apparatus includes a timing control circuit. The timing control circuit outputs a plurality of driving control signals to a gate driving circuit on an LED display panel of the LED display device. Wherein, the plurality of driving control signals includes a first driving control signal and a second driving control signal, and the pulse width of the first driving control signal in a first horizontal line period is different from the pulse width of a second driving control signal in a second horizontal line period preceding to the first horizontal line period.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: August 17, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Kun-Yueh Lin, Hui-Hung Chang, Chien-Yu Chen
  • Patent number: 11094258
    Abstract: A pixel circuit includes: a main circuit including: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and an organic light-emitting element connected to the driving transistor and configured to control the organic light-emitting element by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and a sub circuit including: a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: August 17, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sehyuk Park, Joon-Chul Goh, Sangan Kwon, Jinyoung Roh, Hyojin Lee
  • Patent number: 11087698
    Abstract: A display device is proposed, the display device including a display panel having a plurality of pixels; a data driving circuit converting pixel data to a data voltage based on a gamma compensation voltage to supply the same to the plurality of pixels through a plurality of data lines; a gate driving circuit supplying a scan signal through a gate line connected to pixels of each horizontal line of the display panel; a power supply unit supplying a pixel driving voltage to the plurality of pixels through a power line; and a gamma reference voltage adjusting unit adjusting a range of the gamma compensation voltage based on a pixel driving voltage measurement value measured in synchronization with the scan signal at a plurality of positions on the display panel.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: August 10, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Donggun Lee, Kyujin Kim
  • Patent number: 11087713
    Abstract: A gate driving circuit and a display panel are provided. The gate driving circuit includes N gate driver on array (GOA) units, wherein the N GOA units are cascaded. An nth-stage GOA unit is any one of the N GOA units. The N GOA units include at least one first GOA unit and at least one second GOA unit. Each first GOA unit and each second GOA unit include pull-up control circuits, bootstrap capacitors, pull-up circuits, pull-down circuits, and pull-down holding circuits. Each second GOA unit further includes a reset circuit.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: August 10, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xiaojin He, Bangyin Peng, Ilgon Kim
  • Patent number: 11087652
    Abstract: An abnormality detection circuit includes: a plurality of voltage dividing circuits; a first selector configured to select and output one of a plurality of outputs of the plurality of voltage dividing circuits; a first comparator configured to compare an output of the first selector with a reference voltage; and a first detector configured to detect an abnormality based on an output of the first comparator, wherein the selection of the first selector is switched in synchronization with a vertical synchronization signal or a horizontal synchronization signal of a liquid crystal display device.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: August 10, 2021
    Assignee: Rohm Co., Ltd.
    Inventors: Akira Hashimoto, Takateru Yamamoto, Sukenori Ito, Yasunobu Inoue
  • Patent number: 11087664
    Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: August 10, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Chun Park, Yoon Young Lee
  • Patent number: 11087673
    Abstract: An image apparatus and a method of preventing burn in are provided. The image apparatus includes a comparison circuit, a stress level circuit and an image processing circuit. The comparison circuit compares a difference between a current block in a current frame and the current block in a previous frame to obtain difference information corresponding to the difference, wherein the current block includes at least one pixel. The stress level circuit is coupled to the comparison circuit to receive the difference information corresponding to the current block of the current frame, and estimates a stress status of the current block of the current frame according to the difference information. The image processing circuit is coupled to the stress level circuit to receive the stress status, and determines whether to downgrade a stress of the current block according to the stress status to prevent occurrence of burn in.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: August 10, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Shang-Yu Su, Feng-Ting Pai
  • Patent number: 11086449
    Abstract: Provided are a driving circuit, a touch display device, and a driving method thereof. The effect of an offset to a touch driving signal and a load-free driving signal during a load-free driving process is reduced. Deviations in the amplitude between the touch driving signal and the load-free driving signal are reduced.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 10, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoon Jang, WonYong Jang
  • Patent number: 11081053
    Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may include a drive transistor coupled in series with one or more emission transistors and a respective organic light-emitting diode (OLED). A semiconducting-oxide transistor may be coupled between a drain terminal and a gate terminal of the drive transistor to help reduce leakage during low-refresh-rate display operations. To compensate for variations in the threshold voltage of the semiconducting-oxide transistor, the magnitude of a high voltage level of a scan control signal provided to the gate terminal of the semiconducting-oxide transistor may be adjusted. Sensing circuitry may be used to sense a display current while displaying a calibration image. The sensed display current may be compared to an expected display current associated with the calibration image. Processing circuitry may update the high voltage level based on the actual display current compared to the expected display current.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: August 3, 2021
    Assignee: Apple Inc.
    Inventors: Jiayi Jin, David A. Doyle, Kyung Hoae Koo, Maofeng Yang, Michael H. Lim, Paolo Sacchetto, Timothy M. Johnson, Venkatesh Rajendran, Weijun Yao, Yue Jack Chu
  • Patent number: 11081077
    Abstract: A display device is disclosed. Plural sub-pixels of a display panel are connected to two adjacent gate lines. Each data line is connected to two adjacent sub-pixels of same pixel. In first or second pixel sets, the first and the fourth gate lines are connected to sub-pixels in same column. The second and the third gate lines are connected to sub-pixels in same column. The sub-pixels connected to the fourth gate line of the first pixel set and the first gate line of the second pixel set are located in different columns. In one frame time, the data signal drives same pixel through the nth and (n+1)th data lines using opposite polarities and the data signal drives two adjacent sub-pixels of same pixel set in column direction through the nth and (n+1)th data lines using the same polarities.
    Type: Grant
    Filed: December 29, 2018
    Date of Patent: August 3, 2021
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd.
    Inventor: Chun-Hui Yang
  • Patent number: 11069721
    Abstract: Disclosed are a display device for preventing loss of line patterns and a method of manufacturing the display device. The display device includes a substrate having an active area, a non-active area, and a pad portion formed at one side of the non-active area, printed circuit films disposed in the pad portion so as to be spaced a first distance apart from an edge of the substrate in a first direction and to be spaced apart from each other in a second direction that intersects the first direction, a first-layer line and a second-layer line disposed within the first distance between the printed circuit films and the edge of the substrate so as to be spaced apart from each other in the first direction, and island-shaped dummy patterns disposed in the same layer as the second-layer line in a region between two adjacent ones of the printed circuit films.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: July 20, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Won-June Jung, Sang-Moo Park, Seok-Hyun Lee
  • Patent number: 11070048
    Abstract: An overcurrent protection circuit, an overcurrent protection method, and a display device are disclosed. The overcurrent protection circuit includes: a voltage generation circuit, a current detection circuit, and a microcontroller. An input end of the voltage generation circuit is connected to a power supply, an output end of the voltage generation circuit is connected to an input end of the current detection circuit, and a first output end of the current detection circuit is connected to a first input end of the microcontroller. The voltage generation circuit generates a low-order voltage, and transmits the low-order voltage to the current detection circuit. The current detection circuit generates a first current value based on the low-order voltage and transmits the first current value to the microcontroller. The microcontroller outputs a set overcurrent protection value based on a total current value of the overcurrent protection circuit and the first current value.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: July 20, 2021
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Mingliang Wang
  • Patent number: 11069857
    Abstract: A display device includes a sensing line and a data driver. The sensing line is in a display panel. The data driver includes a plurality of integrated circuits. Each of the integrated circuits includes an interface, which includes a mobile industry processor interface (MIPI) and a crack detector. The crack detector detects cracks of the panel based on the sensing line and transmits and receives information corresponding to the crack to and from adjacent ones of the integrated circuits using a transmission terminal and a reception terminal in the MIPI.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: July 20, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ho Seok Han
  • Patent number: 11069393
    Abstract: An apparatus may include a refresh control circuit with multiple timing circuits. The timing circuits may be used to control steal rates, e.g., the rate of refresh time slots dedicated to healing victim word lines of row hammers. The timing circuits may be controlled to allow independent adjustment of the steal rates for different victim word lines. Thus, different victim word lines may be refreshed at different rates and the different rates may be independent of one another.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: July 20, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Timothy B. Cowles, Jiyun Li, Beau D. Barry, Matthew D. Jenkinson, Nathaniel J. Meier, Michael A. Shore, Adam J. Grenzebach, Dennis G. Montierth
  • Patent number: 11061290
    Abstract: A liquid crystal module includes an array substrate, a color film substrate, and a liquid crystal layer. The array substrate and the color film substrate are disposed oppositely. The liquid crystal layer is disposed between the array substrate and the color film substrate. The array substrate includes a pixel electrode and a capacitor metal layer arranged on a side of the pixel electrode away from the liquid crystal layer. The capacitor metal layer and the pixel electrode form a storage capacitor. The color film substrate includes a reset electrode assembly. In a reset period, the reset electrode assembly is configured to access to a reset voltage signal to orient liquid crystal molecules along a first orientation direction. The reset electrode assembly includes an adjustment structure. During the reset period, the adjustment structure is configured to reduce a capacitive reactance load when the reset voltage signal is turned off.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: July 13, 2021
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Shihao Tang, Yang Zeng, Qijun Yao, Xiaoyue Su, Feng Lu
  • Patent number: 11064139
    Abstract: An imaging device includes a plurality of pixels arranged in a matrix, a first signal line connected to the first pixel; a second signal line connected to the second pixel; and a power-supply line connected to at least one of the plurality of pixels. The plurality of pixels includes a first pixel and a second pixel that are located in a same column. Two or more voltages that differ from each other are applied to the power-supply line. When a distance between the power-supply line and the first signal line is denoted by d1, and a distance between the power-supply line and the second signal line is denoted by d2, d1<d2 is satisfied in a first cross-section that is orthogonal to a column direction, and d1>d2 is satisfied in a second cross-section that is orthogonal to the column direction and that is different from the first cross-section.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: July 13, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Tsutomu Kobayashi
  • Patent number: 11062656
    Abstract: A display apparatus includes: a display panel comprising a gate line, a data line and a plurality of display areas; a gate driver configured to output a gate signal to the gate line; a data driver configured to output a data voltage to the data line; a time sensor configured to sense an operation time of the display panel; and a voltage controller configured to adjust a back gate voltage according to the operation time sensed by the time sensor and the display areas.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: July 13, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seungjae Lee, Soon-Dong Kim, Changnoh Yoon, Jun Heyung Jung
  • Patent number: 11056053
    Abstract: A display device and a method of driving the same. The display device includes a display panel including a plurality of pixels, a degradation compensator configured to output compensation data based on age values of the plurality of pixels and an input grayscale value of input image data, a scan driver configured to supply a scan signal to the display panel, and a data driver configured to supply a data signal corresponding to the compensation data to the display panel. The degradation compensator includes a first compensation unit configured to generate a first compensation grayscale value with reference to the input grayscale value and a first age value, and a second compensation unit configured to generate a second compensation grayscale value with reference to the first compensation grayscale value and the first age value.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: July 6, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hoon Lee, Dong Hak Pyo, Seung Ho Park, Kyoung Ho Lim, Sang Myeon Han
  • Patent number: 11049460
    Abstract: A display device is proposed, the display device including a display panel having a plurality of pixels; a data driving circuit converting pixel data to a data voltage based on a gamma compensation voltage to supply the same to the plurality of pixels through a plurality of data lines; a gate driving circuit supplying a scan signal through a gate line connected to pixels of each horizontal line of the display panel; a power supply unit supplying a pixel driving voltage to the plurality of pixels through a power line; and a gamma reference voltage adjusting unit adjusting a range of the gamma compensation voltage based on a pixel driving voltage measurement value measured in synchronization with the scan signal at a plurality of positions on the display panel.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: June 29, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Donggun Lee, Kyujin Kim