Regulating Means Patents (Class 345/212)
  • Patent number: 11961474
    Abstract: A display device is disclosed that includes a pixel. The pixel includes a first transistor connected between a second node and a third node and including a gate electrode connected to a first node. A first capacitor is formed between the first node and a fourth node. A second capacitor is formed between the fourth node and a first power line. A second transistor is connected between a data line and the fourth node. An eighth transistor is connected between the first power line and the second node. A ninth transistor is connected between the second node and a bias power line. A sixth transistor is connected between the third node and a fifth node. A light emitting element is electrically connected between the fifth node and a second power line. A gate electrode of the eighth transistor and a gate electrode of the sixth transistor are connected to different gate lines.
    Type: Grant
    Filed: January 2, 2023
    Date of Patent: April 16, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Wook Yang, Dong Gyu Lee, Jae Hyeon Jeon
  • Patent number: 11961483
    Abstract: A display panel includes at least one pixel circuit and a light emitting element. One pixel circuit includes a driving transistor, and second and third transistors. The second transistor is connected between data line and a source of the driving transistor. The third transistor is connected between voltage adjusting signal line and the source. During a data writing phase, the second transistor is turned on, the data line provides data signal equal to VData to the source, a gate of the driving transistor receives the data signal, and voltage of the gate is VData+Vth. Vth denotes threshold voltage of the driving transistor. During a reset and adjustment phase, the third transistor is turned on, the voltage adjusting signal line provides adjusting voltage to the source, voltage of the source of the driving transistor is VJ, and the voltage of the gate remains VData+Vth. VData+Vth?VJ??2V.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: April 16, 2024
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Nana Xiong, Jujian Fu
  • Patent number: 11955073
    Abstract: A pixel compensation circuit and a driving method thereof are provided. The pixel compensation circuit includes a resetting unit, a write-in unit, a light-emitting unit, a storage capacitor and a driving transistor. The resetting unit is configured to receive a resetting signal and release electric energy on the storage capacitor and an electroluminescence element. The write-in unit is configured to receive a gate driving signal and write display data into a holding node coupled to the storage capacitor. The light-emitting unit is configured to receive a light-emitting signal and turn on the driving transistor to enable the electroluminescence element to emit light. A compensation unit is added between the holding node and a high potential end and configured to generate a reverse current for compensating a leakage current of the resetting unit.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: April 9, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Li Wang
  • Patent number: 11955083
    Abstract: A display device is disclosed that includes a display panel including a pixel and a scan driver to provide a first scan signal to a third scan signal to the pixel. The pixel includes a light emitting element, a first transistor connected between a first voltage line and the light emitting element, a second transistor connected between a data line and a first node, a gate electrode of the second transistor to receive a first scan signal, a third transistor connected between the second node and the first transistor, a gate electrode of the third transistor to receive a second scan signal, and a fourth transistor connected between a first initialization voltage line, which is to receive a first initialization voltage, and the second node, a gate electrode of the fourth transistor to receive a third scan signal. The first to third scan signals include first to third activation sections, and the first to third activation sections have an equal duration.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: April 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jaewoo Lee, Yongsu Lee, Seung-Jun Lee
  • Patent number: 11948527
    Abstract: The application discloses a liquid crystal display panel and a display device. In the liquid crystal display panel, each pixel unit includes a first sub-pixel and a second sub-pixel. The polarities of the data voltages received by two adjacent pixel units sharing the same data line are opposite. In each pixel unit, the driving timing of the first sub-pixel is earlier than the driving timing of the second sub-pixel, and the duty cycle of the scan signal received by the first sub-pixel is greater than the duty cycle of the scan signal received by the second sub-pixel.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: April 2, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Kyunho Kim, Youngil Ban, Anle Hu, Jianjian Ying, Yingying Liu
  • Patent number: 11935479
    Abstract: According to some aspects of the disclosure, an organic light-emitting display device including a display panel including a driving thin film transistor (TFT), comprises a sensing unit configured to perform a sensing operation for external compensation of the display panel, and an analog-digital converter (ADC) configured to perform a conversion operation of converting an analog value held in the sensing unit into a digital value, wherein the sensing unit comprises a basic sensing unit configured to perform a sensing operation on the driving TFT, and a dummy sensing unit configured to perform a sensing operation on changes in a gain and an offset of the ADC, and the basic sensing unit and the dummy sensing unit are in a cascade connection to each other.
    Type: Grant
    Filed: July 21, 2023
    Date of Patent: March 19, 2024
    Assignee: DB GlobalChip Co., Ltd.
    Inventors: Cheon Wi Park, Jung Il Seo, Jae Hong Ko
  • Patent number: 11935467
    Abstract: An OLED display panel is provided. The OLED display panel includes a plurality of sub-pixels arranged in an array and a plurality of pixel drive circuits for driving the sub-pixels. At least one of the pixel drive circuits comprises a reset module, a data signal input module, a storage module, a light emitting device, and a drive module. The drive module drives a first light emitting device and a second light emitting device to emit light in a first display stage, and drives the first light emitting device to emit light in a second display stage, whereas the second light emitting device does not emit light.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: March 19, 2024
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Zengjian Jin
  • Patent number: 11935483
    Abstract: Provided are a pixel circuit, a driving method thereof and a display panel. The pixel circuit includes: multiple sub-pixel circuits in an array; each sub-pixel circuit includes a first node control sub-circuit, a second node control sub-circuit, a driving sub-circuit, a storage sub-circuit, a reading sub-circuit and a light emitting device; at least reading sub-circuits of the sub-pixel circuits of some rows are controlled by a same sensing control line; the first node control sub-circuit charges the storage sub-circuit in response to a first scan signal; the second node control sub-circuit writes a reference voltage signal into a second node in response to a second scan signal; the reading sub-circuit reads a potential of the second node in response to a sensing control signal written by a sensing control line; the driving sub-circuit drives the light emitting device to emit light.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: March 19, 2024
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
  • Patent number: 11934250
    Abstract: The present disclosure, which relates to a technology for controlling power of a display device, allows reducing power consumption by driving circuits for a display operation and circuits for a touch sensing operation with low power depending on a display operation or a touch sensing operation of a display panel.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: March 19, 2024
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Jung Min Choi
  • Patent number: 11929675
    Abstract: Presented herein are techniques in which a software-controlled load is embedded at an output of a point of load (POL) in parallel to a load that receives power from the POL. A small incremental load is applied to the POL using the software-controlled load. A transient response of the POL to the applied small incremental load is measured using an embedded analysis functionality.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: March 12, 2024
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Spencer A. Beery, Caleb Xavier Berger, Jerrold Mark Pianin, Shuang Liang, Vedant Jain
  • Patent number: 11930597
    Abstract: A display panel and a display device are disclosed. By disposing a binding film over a gap between adjacent circuit boards, and then forming connection wires on the binding film, connections between different circuit boards are achieved. The present disclosure solves a problem of high costs caused by traditional flexible circuit boards and connectors, thereby saving a large number of connectors and flexible circuit boards, and thereby reducing costs significantly.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: March 12, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Peishan Cheng
  • Patent number: 11922875
    Abstract: The present application discloses a display device capable of performing favorable display in which flicker is not visually recognized while the power consumption of a scanning-side drive circuit, as well as a data-side drive circuit, can be reduced sufficiently when pause driving is performed. A pixel circuit including emission control transistors M5, M6 in addition to a drive transistor M1 includes a switching element that is turned on based on a voltage of an emission control line Ei to initialize an organic EL element OL when the voltage of the emission control line Ei is at a level for turning off the emission control transistors M5, M6. For example, in some embodiments, the anode electrode of the organic EL element OL is connected to an initialization voltage line Vini via an N-channel transistor M7 serving as the switching element, and the emission control line Ei is connected to the gate terminal of the transistor M7.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: March 5, 2024
    Assignee: SHAR KABUSHIKI KAISHA
    Inventor: Kohhei Tanaka
  • Patent number: 11922849
    Abstract: A display apparatus including: a display panel including a plurality of display blocks; and a display panel driver configured to generate a power voltage based on a maximum grayscale value of input image data and a position of a maximum load block among the display blocks and configured to output the power voltage to the display panel, wherein the maximum load block has a largest load of the input image data among the display blocks.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kihyun Pyun, Heesook Park
  • Patent number: 11924729
    Abstract: Disclosed is a lighting control system for directing a show. The system includes at least: a master device; and a plurality of slave devices that receive lighting control signals from the master device. The light control signals correspond to seats of a plurality of audiences in an auditorium. The plurality of slave devices receive position information indicating specific positions at which the plurality of slave devices emit a light, light-emitting status information including preset information to classify the plurality of slave devices into a plurality of groups, and group identification number information. The plurality of slave devices are grouped in accordance with received information. The master device controls the grouped plurality of slave devices to emit a light per group basis by broadcasting the lighting control signals including group light-emitting pattern information for each of the plurality of groups of the plurality of slave devices.
    Type: Grant
    Filed: March 1, 2023
    Date of Patent: March 5, 2024
    Assignee: Hanam Artec Co., Ltd.
    Inventors: Gil Won Lee, Ho Lim Song, Jung Min Choi, Kyung Il Choi
  • Patent number: 11915656
    Abstract: According to an aspect of the present disclosure, there is provided a gate driver and a display device. The display device includes: a display panel having a plurality of sub-pixels defined thereon, the sub-pixels being connected to a plurality of scan lines; and a gate driver comprising a plurality of stages for supplying first and second scan signals to each of the plurality of scan lines. Each of the plurality of stages may include: a first output unit for outputting the first scan signal; a second output unit for outputting the second scan signal; a logic unit connected to the first output unit and the second output unit; a low-clock signal line connected to the logic unit; and a high-clock signal line connected to the second output unit. Therefore, a first and a second scan signal can be output from a single stage, so that the structure of the gate driver can become simpler.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: February 27, 2024
    Assignee: LG Display Co., Ltd.
    Inventor: Taehwi Kim
  • Patent number: 11915655
    Abstract: A shift register unit, a method for driving a shift register unit, a gate driving circuit, and a display device are provided. The shift register unit includes: an input control circuit, configured to control a level of the first node; a first control circuit, configured to control a level of the second node; a second control circuit, configured to control the level of the second node under control of a fourth clock signal and an output signal; an output circuit, configured to control a level of the output terminal under control of the level of the first node and the level of the second node; and a first reset circuit, configured to control the level of the output terminal under control of the first enable signal, so as to allow the output terminal to stably output a non-operating level during a detection phase.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: February 27, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Jiangnan Lu, Guangliang Shang, Xinshe Yin, Libin Liu, Ke Feng
  • Patent number: 11915635
    Abstract: A dimming method and device of a display panel, a storage medium, and a terminal equipment are provided. In a second dimming stage in a frame of one frame of an image, a grayscale of a light-emitting stage of the display is controlled by the light-emitting signal. In a first dimming stage in the frame of the image, the grayscale of the light-emitting stage of the display panel is controlled by superposing a control signal in the light-emitting signal. Therefore, in a low grayscale, the grayscale is realized by reducing an amplitude of the light-emitting signal.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: February 27, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ruixiong Li, Jinjia Chen
  • Patent number: 11915654
    Abstract: A drive circuit of a display panel and a display device are provided in the disclosure. The drive circuit includes a voltage output module. The voltage output module includes a voltage input terminal, a voltage output terminal, a detection module, and an isolation module. The voltage input terminal is configured to receive a voltage signal. The voltage output terminal is electrically coupled with the display panel. The detection module is electrically coupled with the voltage input terminal and configured to determine whether a voltage value of the voltage signal received at the voltage input terminal is greater than or equal to a preset voltage threshold. The detection module is configured to output a second control signal when the voltage value of the voltage signal is less than the preset voltage threshold.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: February 27, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Renjie Zhou, Rongrong Li
  • Patent number: 11908395
    Abstract: An electronic device including a panel, a Chip on Film and a flexible circuit board is disclosed. The panel includes a first gate driver, a switch transistor and a driving transistor. An output terminal of the switch transistor is coupled to a control terminal of the driving transistor. The first gate driver is used for receiving an AC signal and a DC signal and outputting a control signal to a control terminal of the switch transistor. The Chip on Film is electrically connected to the panel and used for transmitting a data signal to an input terminal of the switch transistor and transmitting the AC signal to the first gate driver. The flexible circuit board is electrically connected to the panel and used for transmitting a power signal to an input terminal of the driving transistor and transmitting the DC signal to the first gate driver.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: February 20, 2024
    Assignee: InnoLux Corporation
    Inventors: Chun-Hsien Lin, Jui-Feng Ko, Geng-Fu Chang
  • Patent number: 11908430
    Abstract: A display substrate and a display device are disclosed. The display substrate includes a base substrate and a plurality of shift register units; each of the plurality of shift register units includes an input circuit, an output circuit, a first reset circuit and a frame reset signal connection wire; the frame reset signal connection wire and is configured to provide a frame reset signal to the first reset circuit; the first reset circuit is configured to respond to the frame reset signal, so as to reset a first node and an output end within a time period between two display frames of the display substrate; the first reset circuit includes a first transistor and a second transistor, and the frame reset signal connection wire, a gate of the first transistor and a gate of the second transistor are provided on a first conductive layer.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: February 20, 2024
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD. LTD.
    Inventors: Rui Ma, Xiaoye Ma, Xianjie Shao, Ruifang Du
  • Patent number: 11910499
    Abstract: An electronic apparatus is provided.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: February 20, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junhyun Won, Jiwon Lee, Sungyong Joo, Taejun You
  • Patent number: 11908377
    Abstract: A repair pixel and a display apparatus including the repair pixel, the display panel including a repair pixel for a pixel row or a plurality of repair pixels for a pixel row so that repair may be performed using the repair pixel when a bad pixel occurs in the corresponding pixel row. The bad pixel is repaired using the repair pixel so that the yield of the display panel may be enhanced.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: February 20, 2024
    Assignee: Samsung Display Co., LTD.
    Inventors: Hai-Jung In, Sungmin Son, Jae-Jin Song
  • Patent number: 11900881
    Abstract: The present disclosure provides a display substrate, a manufacturing method and a display device. At least one of the plurality of shift register units in the scan driving circuit includes an output circuit including an output transistor and an output reset transistor; a length of the active layer of the output transistor/the output reset transistor in the first direction is a first length/a second length, and a sum thereof is an output active length; a smaller one of minimum width of the active layer of the output transistor and the output reset transistor in a second direction is a first output active width, the first direction intersects the second direction; a ratio of the output active length to the first output active width is within a first predetermined ratio range greater than or equal to 3 and less than or equal to 11.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: February 13, 2024
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lu Bai, Haigang Qing, Pengfei Yu, Jie Dai, Xiaofeng Jiang
  • Patent number: 11893945
    Abstract: The display device includes a first data line group including data lines connected to pixels arranged at a first resolution; a second data line group including data lines connected to pixels arranged at the first resolution and pixels arranged at a second resolution; a first gamma compensation voltage generation unit that divides a first reference voltage and outputs a gamma compensation voltage; a second gamma compensation voltage generation unit that divides a second reference voltage and outputs gamma compensation voltages; a first data drive unit that converts pixel data into the gamma compensation voltage output from the first gamma compensation voltage generation unit and outputs a data voltage to the first data line group; and a second data drive unit that converts pixel data into the gamma compensation voltage output from the second gamma compensation voltage generation unit and outputs a data voltage to the second data line group.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: February 6, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Seung Jin Yoo, Hyun Gi Hong
  • Patent number: 11892895
    Abstract: The present disclosure, which relates to a technology for controlling power of a display device, allows reducing power consumption by driving circuits for a display operation and circuits for a touch sensing operation with low power depending on a display operation or a touch sensing operation of a display panel.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: February 6, 2024
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Jung Min Choi
  • Patent number: 11887538
    Abstract: A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the first switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: January 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seongheon Cho, Joon-Chul Goh, Soon-Dong Kim, Bonghyun You
  • Patent number: 11887544
    Abstract: A display device includes a display panel including a plurality of pixels, a data driver configured to provide a data signal to the pixels, a scan driver configured to provide a scan signal to the pixels, a power controller configured to provide a driving voltage to the data driver and the scan driver, and a timing controller configured to generate a data control signal that controls the data driver, a scan control signal that controls the scan driver, and a power control signal that controls the power controller based on an image data and a control signal. The power controller determines a transient time that changes the driving voltage from a first voltage level to a second voltage level based on the power control signal.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: January 30, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yanguk Nam, Dae-Sik Lee
  • Patent number: 11886270
    Abstract: Aspects of the subject technology relate to power consuming processes of electronic devices. For example, an electronic device may create, initiate, and/or modify a power consuming process of the electronic device, based in part on user power consumption information that indicates a typical amount of power consumed by a user of the electronic device. The electronic device may recommend increases in power consumption for low power consumption users and/or decreases in power consumption for high power consumption users. A power consumption process may include a visual arrangement of graphical elements that each display periodically, occasionally, and/or continuously updated information from the application, when a full user interface of the application is not displayed.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: January 30, 2024
    Assignee: Apple Inc.
    Inventors: Kartik R. Venkatraman, Manish Chandra Reddy Ravula, Roberto Alvarez
  • Patent number: 11881383
    Abstract: A control circuit for generating a primary alternating current (AC) voltage signal provided to a dielectric barrier discharge (DBD) disk of a three-dimensional printer includes a switching regulator receiving a direct current (DC) voltage signal. The switching regulator modulates the DC voltage signal based on a variable duty cycle to create a modulated DC signal. The control circuit also includes a modulation circuit in electrical communication with the switching regulator. The modulation circuit introduces a frequency component to the modulated DC signal, where the primary AC voltage signal includes a variable duty cycle and a set frequency, and the frequency component introduced into the modulated DC signal is representative of the set frequency of the primary AC voltage.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: January 23, 2024
    Assignee: ESSENTIUM IPCO, LLC
    Inventor: Matthew Skolaut
  • Patent number: 11882635
    Abstract: In some examples, this disclosure describes a light-emitting diode (LED) driver circuit comprising a set of LED drivers, wherein each LED driver of the set of LED drivers is configured to control one or more LEDs of a set of LEDs. Additionally, the LED driver circuit comprises a core computing device configured to receive LED control information, compare primary path LED driver control output data with secondary path LED driver control output data to detect whether one or more error conditions are present in the core computing device, receive channel status feedback information, compare the secondary path LED driver control output data with the channel status feedback information to detect whether one or more error conditions are present in the set of LED drivers or in the set of LEDs, and trigger, based on determining that one or more error conditions are present, one or more remedial actions.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: January 23, 2024
    Assignee: Infineon Technologies AG
    Inventors: Luca Mengani, Franco Mignoli
  • Patent number: 11881778
    Abstract: A circuit portion comprises a DCDC converter that is configured to charge and discharge an inductor according to a duty cycle to provide current to an output load. A duty module is configured to determine the duty cycle such that the DCDC converter will output a target current. A duty limiter module is configured to cause the inductor to discharge early if the determined duty cycle exceeds a threshold.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: January 23, 2024
    Assignee: Nordic Semiconductor ASA
    Inventor: Samuli Hallikainen
  • Patent number: 11881174
    Abstract: An OLED drive circuit and an OLED display device. The OLED drive circuit includes a sub-drive circuit, a sub-switch circuit, a sub-detection circuit and a sub-compensation circuit; the sub-drive circuit is configured to output a driving voltage to an OLED; the sub-detection circuit is configured to detect the driving voltage of the sub-drive circuit when a circuit path between the sub-drive circuit and the OLED is disconnected; and the sub-compensation circuit is configured to output a data voltage output by the data line according to the driving voltage detected by the sub-detection circuit. According to the OLED drive circuit, a change of the driving current flowing into the OLED can be reduced, and an image quality of the OLED display device can be improved accordingly.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: January 23, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventor: Xueyong Huang
  • Patent number: 11881181
    Abstract: A display device includes a substrate, a first active pattern, a first gate electrode, a second active pattern, a second gate electrode, a first connecting pattern, and a second connecting pattern. The first connecting pattern is disposed on the second active pattern and is electrically connected to the first gate electrode, and the second connecting pattern is disposed on the first connecting pattern and is electrically connected to the first connecting pattern and the second active pattern.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: January 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Seon Lee, Jin Sung An, Seok Je Seong, Seong Jun Lee, Se Wan Son
  • Patent number: 11881171
    Abstract: An electronic device including a substrate and a pixel circuit is provided. The substrate includes an active area and a peripheral area. The peripheral area is adjacent to the active area. The pixel circuit is disposed in the active area on the substrate. The pixel circuit includes an amplifier circuit and a tunable element. The amplifier circuit includes a non-inverting input terminal, an inverting input terminal, and an output terminal. The output terminal is electrically connected to the inverting input terminal, so that the amplifier circuit is a negative feedback circuit. The tunable element is electrically connected to the output terminal of the amplifier circuit.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: January 23, 2024
    Assignee: Innolux Corporation
    Inventors: Ming-Chun Tseng, Kung-Chen Kuo, Lien-Hsiang Chen, Yong-Zhi Liu, Po-Syun Chen
  • Patent number: 11875725
    Abstract: A display device including a display panel according to an embodiment of the present application includes a plurality of pixels, a timing controller configured to receive a compensation command signal in a vertical blank period in which no image data are written in the pixels, and a sensing circuit configured to sense driving properties of the pixels in at least one sensing period corresponding to the compensation command signal, wherein a length of the vertical blank period is different from each other in a first frame and a second frame, and a number of sensing periods having a predetermined length varies depending on the length of the vertical blank period.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: January 16, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Won Cho, Kyoung Sik Choi
  • Patent number: 11877487
    Abstract: A display apparatus including first-through-third pixels sequentially arranged in a row direction, a first shielding electrode arranged between the first pixel and the second pixel, a first voltage line configured to transmit a first initialization voltage, a second voltage line configured to transmit a second initialization voltage, a first contact plug connecting the first pixel and the second pixel to the first voltage line, a second contact plug connecting the second pixel and the third pixel to the second voltage line, and a third contact plug connecting the first shielding electrode to the first voltage line.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: January 16, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyungjun Park, Junyong An, Nuree Um
  • Patent number: 11875761
    Abstract: A display driving circuit includes a frame rate extractor configured to receive a vertical synchronization signal indicating a start of a k-th frame, k-th frame data including information about the k-th frame, and a data enable signal indicating an active period of the k-th frame and a variable blank period that occurs after the active period, and extract a frame rate of the k-th frame, based on the vertical synchronization signal; and an image corrector configured to correct frame data received after reception of the k-th frame data, based on the frame rate of the k-th frame, and output the corrected frame data as output image data, wherein the vertical synchronization signal is received before a start time point of the active period.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: January 16, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyuchan Lee, Pureum Ryoo, Hyoungpyo Lee, Junghyun Lim
  • Patent number: 11875721
    Abstract: The application provides a display panel and a driving method thereof. The display panel comprises a plurality of sub-pixels arranged in a matrix, and the sub-pixels are grouped into a plurality of cell areas arranged repeatedly along the row direction and the column direction. Each cell area comprises at least two sub-pixels, with polarities of adjacent sub-pixels opposite to each other. For at least two consecutive frames during a display cycle, the gray-levels of sub-pixels in the cell area maintain unchanged while polarities of the sub-pixels are reversed.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 16, 2024
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yonglei Zhang, Tao He, Jhenwei He
  • Patent number: 11869427
    Abstract: This display device according to an aspect of the disclosure includes a pixel circuit including: a drive transistor configured to control an electric current for a light-emitting element; a switching circuit; and a first capacitive element and a second capacitive element both connected to the switching circuit, wherein the switching circuit connects the first capacitive element to a control terminal of the drive transistor in a first period that falls within a single frame period and connects the second capacitive element to the control terminal of the drive transistor in a second period that falls within the single frame period and that follows the first period.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: January 9, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Naohiro Hohjoh
  • Patent number: 11862094
    Abstract: A power management driver and a display device having the power management driver are provided, including a first power supply configured to supply a first voltage to a first driving power terminal of a pixel through a power line during a sensing period, and supply a second voltage to the first driving power terminal of the pixel through the power line during a display period; a controller configured to control timing at which the first voltage is output and timing at which the second voltage is output during a transition period between the display period and the sensing period in response to a sensing control signal; and a fault detector configured to detect a fault in the power line based on a current flowing through an output terminal during the sensing period.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: January 2, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Sik Lee, Si Duk Sung, Sang Hyun Lee
  • Patent number: 11862109
    Abstract: A display device includes a reference voltage line electrically connected with a first node and receiving a sensing voltage reflecting a characteristic value of at least one subpixel and an analog-to-digital converter including a second node, receiving the sensing voltage, and outputting a digital value corresponding to the sensing voltage, wherein a voltage level of a driving reference voltage applied to the first node and a voltage level of an analog-to-digital converting reference voltage applied to the second node are changed depending on a level of the sensing voltage, thereby compensating for changes in the characteristic values of subpixels even when abnormal subpixels for which appropriate compensation for changes in characteristic values of subpixels is limited.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: January 2, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Jong-Won Kim
  • Patent number: 11854462
    Abstract: A display system and an operating method thereof are provided. The display system includes a display panel, a source driver, and a timing controller. The source driver is coupled to the display panel for providing a plurality of pixel voltages to the display panel. The timing controller has a transmission interface circuit and is coupled to the source driver. The timing controller detects whether an operation timing of the display system enters a vertical blanking (VBK) period. When the operation timing of the display system enters the VBK period, the timing controller turns off the transmission interface circuit and causes the source driver to enter an idle mode. When the operation timing of the display system is at a preset time before an end of the VBK period, the timing controller turns on the transmission interface circuit and wakes up the source driver.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: December 26, 2023
    Assignee: AUO Corporation
    Inventors: Ke-Hsin Tseng, Tsung-Hsuan Ho
  • Patent number: 11854480
    Abstract: A pixel circuit, a method for driving a pixel circuit and a display device. The pixel circuit includes a driving element including a first electrode connected to a first node, a first gate electrode connected to a second node, a second electrode connected to a third node, and a second gate electrode to which a preset voltage is applied; a light emitting element including an anode electrode connected to a fourth node and a cathode electrode to which a low-potential power supply voltage is applied, the light emitting element being driven according to a current from the driving element; a first switch element connected between the first node and the second node; and a second switch element connected between the third node and the fourth node.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: December 26, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Sung Yu, Jae Hoon Park
  • Patent number: 11856668
    Abstract: A driving method, for a controller in a display apparatus, is disclosed. The display apparatus includes LED strings, scan transistors, current regulators and a power converter. The driving method includes following steps. LED cathode voltages are detected on nodes between the LED strings and the current regulators. When a first LED cathode voltage corresponding to a first scanning channel is equal to a minimal operable voltage of the current regulators and a second LED cathode voltage corresponding to a second scanning channel exceeds the minimal operable voltage of the current regulators, a voltage drop over one corresponding scan transistor is increased on the second scanning channel.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: December 26, 2023
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Jhih-Siou Cheng, Chih-Hsien Chou, Ren-Chieh Yang
  • Patent number: 11837687
    Abstract: A display panel and a display apparatus are provided. The display panel includes an active area and a non-active area located at least on one side of the active area, wherein the non-active area includes a first fanout area; a plurality of sub-pixels located in the active area; a plurality of data lines located in the active area and extending from the active area to the first fanout area, the plurality of data lines electrically connected to the plurality of sub-pixels and configured to provide data signals for the plurality of sub-pixels; the first fanout area includes at least two data line fanout sub-areas, and the plurality of data lines are respectively located in the at least two data line fanout sub-areas.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: December 5, 2023
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Long Han
  • Patent number: 11837175
    Abstract: A display apparatus for reducing a booting time includes: a display panel including a plurality of pixels; a timing controller configured to drive the display panel; and a at least one controller configured to control the timing controller to perform a sensing process for sensing electrical characteristics of the plurality of pixels based on power-on of the display panel, wherein the at least one controller is further configured to determine whether to perform the sensing process or skip the sensing process based on a power-off period of the display panel before the display panel is powered on.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: December 5, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungjin Lim, Seungjun Jeong, Junghyun Yoon
  • Patent number: 11837169
    Abstract: The present disclosure provides a pixel circuit including: a driving transistor and a voltage control circuit; wherein in the voltage control circuit, at least one transistor directly coupled to a gate of the driving transistor is an oxide thin film transistor. The disclosure also provides a display substrate and a display apparatus.
    Type: Grant
    Filed: May 15, 2022
    Date of Patent: December 5, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yipeng Chen, Libin Liu, Lujiang Huangfu
  • Patent number: 11837127
    Abstract: A light emitting display device includes a display panel, a structure for short detection, and a short detecting unit. The display panel displays an image. The structure for short detection includes a first power line, a second power line, and a short detection line disposed between the first power line and the second power line in the display panel. The short detecting unit senses a sensing value from the short detection line and determines whether a short occurs in the display panel on the basis of the sensing value.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: December 5, 2023
    Assignee: LG Display Co., Ltd.
    Inventor: Hongsuk Kim
  • Patent number: 11837173
    Abstract: A gate driving circuit that minimizes output characteristic deviation between a plurality of scan output buffer units, and a display device comprising the gate driving circuit, are discussed. An Nth stage of the gate driving circuit, N being a natural number, can include a node controller configured to control voltages of a first node and a second node according to a set signal and a reset signal, a carry pulse output unit configured to receive a carry clock and output the carry clock as a carry pulse according to voltages of the first node and the second node, and a plurality of scan pulse output units configured to receive a plurality of scan clocks and output each of the scan clocks as a scan pulse according to voltages of the first node and the second node.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: December 5, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Sung Ho Yun
  • Patent number: RE49899
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a plurality of pixels and a data line formed adjacent to the pixels and configured to transfer a data voltage. The display also includes a driving voltage line formed substantially parallel to the data line and configured to transfer a driving voltage, and an initialization voltage line formed substantially parallel to the data line and configured transfer an initialization voltage. At least one of the pixels includes a driving transistor including a driving gate electrode and configured to receive the initialization voltage from the initialization voltage line. A driving connector is spaced apart from the data line and electrically connected to the driving gate electrode. An OLED is electrically connected to the driving transistor, at least one of the initialization voltage line and the driving voltage line interposed between the driving connector and the data line.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: April 2, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kwang Sae Lee