Regulating Means Patents (Class 345/212)
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Patent number: 11386834Abstract: A light-emitting diode (LED) display driver circuit includes: a set of scan lines, each scan line having a respective switch; a set of channels coupled to each scan line of the set of scan lines; and a scan line controller coupled to each respective switch of the set of scan lines, the scan line controller configured to provide a programmable sequence of control signals to respective switches of the set of scan lines.Type: GrantFiled: December 15, 2020Date of Patent: July 12, 2022Assignee: Texas Instruments IncorporatedInventors: Yang Wang, Huibo Zhong, Haibin Shao, Yan He, Shang Ding, Yongxiang Zhang
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Patent number: 11386855Abstract: A voltage control circuit is configured to connected to a display panel, the display panel includes a plurality of pixels, the plurality of pixels includes a first pixel and a second pixel, and the first pixel and the second pixel are pixels corresponding to different colors. The voltage control circuit is configured to provide a first voltage to the first pixel and a second voltage to the second pixel at a first time and a second time, respectively; the first voltage provided at the first time is different from the second voltage provided at the first time, and the first voltage provided at the second time is identical with the second voltage provided at the second time.Type: GrantFiled: May 20, 2020Date of Patent: July 12, 2022Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Hengzhen Liang, Xuesong Tian, Wen Xu, Xu Lu
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Patent number: 11381790Abstract: A video processing device according to an embodiment includes: a determination unit configured to determine whether pixel shift display is performed according to an original video; a control signal generation unit configured to generate a control signal indicating ON/OFF of the pixel shift display and a pixel display position when the pixel shift display is turned ON, based on a determination result by the determination unit; a display image generation unit configured to generate a display image from the original video, based on the determination result by the determination unit; and an addition unit configured to add the control signal to the display image.Type: GrantFiled: December 13, 2019Date of Patent: July 5, 2022Assignee: JVCKENWOOD CORPORATIONInventor: Ryosuke Nakagoshi
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Patent number: 11373590Abstract: Provided are a display panel, a driving method thereof, and a display device. The display panel includes a pixel circuit and a light-emitting element; where the pixel circuit includes a drive module, a data writing module, a light emission control module, and a bias module; where the drive module is configured to provide the light-emitting element with a drive current and includes a drive transistor; the data writing module is connected to a source of the drive transistor and configured to selectively provide the drive module with a data signal; the light emission control module is configured to selectively allow the light-emitting element to enter a light-emitting stage; the bias module is connected between a drain of the drive transistor and the light emission control signal line.Type: GrantFiled: September 7, 2021Date of Patent: June 28, 2022Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.Inventors: Yong Yuan, Jieliang Li
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Patent number: 11371686Abstract: A lighting device is presented for highlighting a first product over a second product placed in a first and a second section respectively of a store fixture, display or shelf to draw a shopper's attention to the first product, the lighting device comprising: a first and a segment, adjacent to each other, arranged for providing a first light output for illuminating the first product and a second light output for illuminating the second product respectively, a controller arranged for changing an operational mode of the lighting device from a normal lighting mode to a highlighting mode based on a signal indicating presence of a field; wherein in both the normal lighting mode and the highlighting mode, the first segment and the second segment provide illumination, and wherein in the highlighting mode, the first segment highlights the first product over the second product.Type: GrantFiled: July 31, 2019Date of Patent: June 28, 2022Assignee: SIGNIFY HOLDING B.V.Inventors: Remco Christianus Wilhelmus Leermakers, Jan Richard Huisman, Marcel Vidjaising Somer, Wessel Van Sluis
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Patent number: 11373589Abstract: A display includes first and second pixel devices. The first pixel device includes a first control circuit and a first light emitting circuit. The first control circuit generates a first light emitting signal according to a first clock signal and a data signal during a first period. The first light emitting circuit emits light according to the first light emitting signal during second and third periods. The second pixel device includes a second control circuit and a second light emitting circuit. The second control circuit generates a second light emitting signal according to a second clock signal and the data signal during the second period. The second light emitting circuit is coupled to the second control circuit and emits light according to the second light emitting signal during the third period. The first period to the third period are arranged continuously in order.Type: GrantFiled: August 9, 2021Date of Patent: June 28, 2022Assignee: Lextar Electronics CorporationInventors: Chien-Nan Yeh, Chih-Hao Lin, Cheng-Te Lin, Ku-Cheng Lin
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Patent number: 11373622Abstract: Various embodiments disclose a system that includes a first source processor that generates a first stream of graphics data, a second source processor that generates a second stream of graphics data, a display device that displays at least one of the first stream of graphics data and the second stream of graphics data, and a timing controller that is coupled to the first source processor and the second source processor and receives a first control signal to enter into a self-refresh state, in response, enters into the self-refresh state, causes the display device to display a first frame stored in memory, wherein the first frame includes at least a portion of data included in the first stream of graphics data, receives a second stream of graphics data, exits the self-refresh state, and causes the display device to display the second stream of graphics data.Type: GrantFiled: June 3, 2019Date of Patent: June 28, 2022Assignee: NVIDIA CorporationInventors: ChinFeng Hsu, Andrew R. Bell, Gabriele Gorla, Subhash Gutti
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Patent number: 11367396Abstract: The present disclosure provides a pixel driving circuit, a display panel and a display apparatus. The pixel driving circuit includes: a first connection line, a second power supply line and a data writing unit. The first connection line is coupled to a gate of at least one transistor in the data writing unit. The first connection line includes at least a first section and a second section coupled to each other, a width of the first section is greater than a width of the second section, and an orthographic projection of the first connection line on the substrate and an orthographic projection of the second power supply line on the substrate overlap with each other to form a first overlapping region, and the first section extends through the first overlapping region.Type: GrantFiled: December 8, 2020Date of Patent: June 21, 2022Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Huijun Li, Tingliang Liu, Yonglin Guo, Huijuan Yang
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Patent number: 11367397Abstract: A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel.Type: GrantFiled: December 18, 2020Date of Patent: June 21, 2022Assignee: LG Display Co., Ltd.Inventors: Se-Hwan Kim, Tae-Keun Lee, Min-Su Kim, Hae-Jun Park, Young-Taek Hong
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Patent number: 11367389Abstract: The embodiments of the present disclosure disclose a pixel circuit and a method for driving the same, a display panel and a display apparatus.Type: GrantFiled: September 21, 2018Date of Patent: June 21, 2022Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventor: Yingsong Xu
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Patent number: 11367765Abstract: A display device includes a first display area including a plurality of first pixel electrodes, and a second display area including a plurality of second pixel electrodes. A first pitch in a first direction of the plurality of first pixel electrodes is smaller than a second pitch in the first direction of the plurality of second pixel electrodes, and a length in the first direction of the first pixel electrodes is smaller than a length in the first direction of the second pixel electrode.Type: GrantFiled: November 20, 2019Date of Patent: June 21, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji-Hyun Ka, Tae Geun Kim, Gyeong-Im Lee
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Patent number: 11367371Abstract: Disclosed are a display panel and a display device. The display panel includes a substrate defining a display area, a fan-out area and a source driving chip. A feedback line is arranged in the display area. The source driving chip has a first state and a second state. When the source driving chip is in the first state, a first data signal is input by the source driving chip to the feedback line; when the source driving chip is in the second state, a voltage of the feedback line is fed back to the source driving chip, to allow the source driving chip to output a second data signal to a remaining line of the display area. In each column, a summed number of the first data signal is equal to a summed number of the second dpata signal.Type: GrantFiled: December 19, 2018Date of Patent: June 21, 2022Assignee: HKC CORPORATION LIMITEDInventor: Zhi Xiong
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Patent number: 11367402Abstract: The present disclosure relates to an EOA circuit, a display panel, and a terminal. The EOA circuit includes an output module and a control module; wherein the output module is configured to generate an output signal according to a first scanning signal and a clock signal, and the output module is further configured to reset the output signal from a high level to a low level within a period where the first scanning signal is an active level and a period where the clock signal is an inactive level; and the control module is configured to restore the output signal from the low level to the high level according to a second scanning signal within a period where the first scanning signal is at the inactive level.Type: GrantFiled: June 4, 2021Date of Patent: June 21, 2022Assignee: Shenzhen Royole Technologies Co., Ltd.Inventors: Dan Chen, Jiha Kim
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Patent number: 11361727Abstract: The pixel circuit and its drive method, the display panel, and the display device are provided in the present disclosure. The pixel circuit includes a data write unit, a voltage compensation unit, a first switch unit, a second switch unit, a third switch unit, a liquid crystal capacitor, and a storage capacitor. In a dynamic display stage, the first switch unit and the second switch unit are turned on for conduction; and the data write unit transmits a data voltage signal to the liquid crystal capacitor and the storage capacitor. In a static display stage, the third switch unit is turned on for conduction; the voltage compensation unit is controlled to be in conduction through first and second reference voltage signals and a potential signal of the storage capacitor; and a first voltage signal terminal transmits a first voltage signal to the liquid crystal capacitor.Type: GrantFiled: February 3, 2021Date of Patent: June 14, 2022Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.Inventor: Liang Zhou
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Patent number: 11353758Abstract: Disclosed are an array substrate, a display panel, a display device, and a driving method. The array substrate includes a plurality of data lines, and a plurality of columns of pixel structures which are respectively connected to the plurality of data lines in one-to-one correspondence. Each of the plurality of columns of the pixel structures includes a plurality of pixel structures. Each of the plurality of pixel structures includes two adjacent sub-pixel units and a first transistor. The sub-pixel unit includes a second transistor. The first transistor is connected to the second transistors of the two adjacent sub-pixel units and the data line respectively.Type: GrantFiled: October 23, 2020Date of Patent: June 7, 2022Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yinghao Zhang, Qian Wang, Duo Zhang, Yongquan Lu, Dongxue Sun, Feng Jiang, Xuru Zhang, Weimeng Zhang, Yanjie Zhang
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Patent number: 11355090Abstract: In an embodiment of the present invention, a method for displaying an image of a display device includes moving the image displayed on an image display region along a movement path including a first position and a second position during a period of time, wherein, during the period of time, a total time for which the image is located at the first position is greater than a total time for which the image is located at the second position.Type: GrantFiled: September 21, 2020Date of Patent: June 7, 2022Assignee: Samsung Display Co., Ltd.Inventors: Kang Hee Lee, Seung Ho Park, Chai Hoon Lim, Mi Young Joo
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Patent number: 11341913Abstract: A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.Type: GrantFiled: April 12, 2021Date of Patent: May 24, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyo Jin Lee, Joon-Chul Goh, Sangan Kwon, Hui Nam, Jin Young Roh, Sehyuk Park
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Patent number: 11341916Abstract: A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel includes a pixel comprising a switching element of a first type and a switching element of a second type different from the first type. The gate driver is configured to generate a gate signal based on a vertical start signal and a gate clock signal and output the gate signal to the display panel. The data driver is configured to output a data voltage to the display panel. The emission driver is configured to output an emission to the display panel. A driving frequency of the display panel is varied according to an input image. The gate clock signal has an active duration having a varied length according to the driving frequency.Type: GrantFiled: May 31, 2019Date of Patent: May 24, 2022Inventors: Hyo-Jin Lee, Sehyuk Park
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Patent number: 11341927Abstract: A pixel driving method is provided. Based on current brightness values of the sub-pixel in row j and column i, current brightness values of the sub-pixels that have the same color and are adjacent to the sub-pixel in row j and column i to obtain the target brightness value of the sub-pixel in row j and column i by the target brightness value calculation formula, and then to obtain a brightness compensation value of the sub-pixel in row j and column i by a brightness compensation value calculation formula, and based on the target brightness value of the sub-pixel in row j and column i, the brightness compensation value of the sub-pixel in row j and column i to output a compensated brightness value of the sub-pixel in row j and column i by a compensated brightness value calculation formula.Type: GrantFiled: June 25, 2019Date of Patent: May 24, 2022Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Geng Wang
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Patent number: 11335269Abstract: 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: GrantFiled: February 24, 2020Date of Patent: May 17, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yipeng Chen, Libin Liu, Lujiang Huangfu
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Patent number: 11335228Abstract: A scanning signal circuit, a display panel and a driving method are provided. In the scanning signal circuit, under an action of an input signal, a first target clock signal, a second target clock signal and a third target clock signal, the input signal and the second target clock signal are transmitted to a potential stabilization module, a first output module and a second output module through an input module and a potential control module; and under a stabilization function of the potential stabilization module that is applied on inputs of the first and second output modules through a high-level signal and a third target clock signal, the first output module is configured to output a first output signal, and the second output module is configured to use a fourth target clock signal to output a second output signal with high-level pulses.Type: GrantFiled: July 2, 2021Date of Patent: May 17, 2022Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Mengmeng Zhang, Xingyao Zhou
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Patent number: 11335280Abstract: An image update determining unit compares a previously set temperature with a temperature estimated by a temperature increase estimating unit, and determines whether or not an image update operation is executable, and an image update interval is appropriately set according to the estimated temperature by performing image update on an image to be displayed next when the image update determining unit determines the image update operation to be executable but not performing image update when the image update determining unit determines the image update operation to be non-executable.Type: GrantFiled: August 14, 2020Date of Patent: May 17, 2022Assignee: TIANMA MICROELECTRONICS CO., LTD.Inventors: Tetsushi Sato, Kazunori Masumura, Koji Shigemura
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Patent number: 11333821Abstract: A light source useful for architectural lighting, general lighting, street lighting, or other lighting applications includes a plurality of light emitting diodes. A least some light emitting diodes can be sized between 30 microns and 500 microns. A plurality of micro-optics sized less than 1 millimeter are positioned over at least some of the plurality of light emitting diodes and a controller is connected to selectively power groups of the plurality of light emitting diodes to provide different light beam patterns.Type: GrantFiled: September 26, 2019Date of Patent: May 17, 2022Assignee: LUMILEDS LLCInventors: Sudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifeng Qiu
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Patent number: 11328656Abstract: A pixel driving circuit, a pixel driving method and a display device are provided. the pixel driving circuit includes a driving circuit and a light-emitting duration control circuit, a first end of the driving circuit is connected to a first voltage end, a second end of the driving circuit is connected to the light-emitting element, and the driving circuit is configured to control the first end and the second end to connect to each other; the light-emitting duration control circuit is configured to switch on or switch off a connection between the second end of the driving circuit and the light-emitting element, according to a control data voltage input by a control data line and a control initial voltage input by a control initial voltage end.Type: GrantFiled: April 16, 2020Date of Patent: May 10, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Shengji Yang, Xiaochuan Chen, Hui Wang, Pengcheng Lu, Kuanta Huang
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Patent number: 11328673Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: pixels; scan lines extending in a row direction and connected to the pixels; a data lines extending in a column direction and connected to the pixels; a receiving lines extending in the column direction and connected to the pixels; and a compensation circuit portion that generates first sensing data by receiving a current flowing to the pixels through the receiving lines, and generates a compensation value that compensates a characteristic of a driving transistor included in each of the pixels by multiplying the first sensing data by a calibration factor that corresponds to a position of each of the pixels, wherein the calibration factor includes a line calibration factors that correspond to the receiving lines.Type: GrantFiled: December 17, 2020Date of Patent: May 10, 2022Inventors: Kyung Man Kim, Seok Gyu Ban
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Patent number: 11328654Abstract: A multi-grayscale pixel driving circuit and a display panel are provided. A driving module, a light emitting module, and a light emitting control module are coupled in series between a first electrode and a second electrode in the multi-grayscale pixel driving circuit. A light emitting situation of using the driving module and the light emitting control module to control the light emitting module to emit light according to a preset time sequence allows the light emitting module to realize multi-grayscale displays of low grayscale or high grayscale, greatly improving a grayscale number for displaying in the display panel.Type: GrantFiled: October 29, 2020Date of Patent: May 10, 2022Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Yan Li
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Patent number: 11320710Abstract: A pixel array substrate including a substrate, data lines, gate lines, pixels, and transfer lines is provided. The data lines are disposed on the substrate and arranged in a first direction. The gate lines are disposed on the substrate and arranged in a second direction interlaced with the first direction. The pixels are disposed on the substrate, each of which includes an active device electrically connected to one of the data lines and one of the gate lines and a pixel electrode electrically connected to the active device. The transfer lines are arranged in the first direction and electrically connected to the gate lines, respectively. The pixels include first pixels. In a top view of the pixel array substrate, at least one of the pixel electrodes of the first pixels is partially overlapped with one of the transfer lines. A driving method of a pixel array substrate is also provided.Type: GrantFiled: October 29, 2020Date of Patent: May 3, 2022Assignee: Au Optronics CorporationInventors: Min-Tse Lee, Sheng-Yen Cheng, Yueh-Hung Chung, Kuang-Hsiang Liao, Yang-Chun Lee, Yan-Kai Wang, Ya-Ling Hsu, Yi-Ren Chen, Hung-Che Lin, Sheng-Ju Ho, Chien-Huang Liao, Chen-Hsien Liao
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Patent number: 11322109Abstract: Disclosed are embodiments of a narrow bezel display. The narrow bezel display has a structure in which output terminals of gate circuits are connected to jumping units through wires having a multistage path, thereby reducing the bezel size of a display. A dielectric layer may be disposed under the multistage path without placing another wire layer thereunder to prevent non-uniform capacitance between the wires and an underlying wire layer. Thus, a dimming phenomenon may be prevented during operation of the display or a short circuit may be prevented during an electrostatic test.Type: GrantFiled: September 18, 2020Date of Patent: May 3, 2022Assignee: LG Display Co., Ltd.Inventors: Daehoon Kim, Yuseok Jung
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Patent number: 11320880Abstract: According to examples, an apparatus may include a processor, a display system and a multifunction display port. The multifunction display port may include a display port connector and an input power connector. In addition, based on the apparatus being in a power off state and being connected to a host device, the display system may receive input electrical energy through the input power connector from a host device, receive display data through the display port connector from the host device, and display the display data received from the host device while bypassing the processor.Type: GrantFiled: November 1, 2018Date of Patent: May 3, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Yi-Fan Hsia, Daniel Chung, Hung Lung Chen, Chai-Cheng Lin
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Patent number: 11315480Abstract: Provided are a pixel driving circuit, a driving method thereof, and display panel. The pixel driving circuit includes a current control circuit and a time control circuit, wherein the current control circuit is configured to receive a display data signal and control a magnitude of a driving current flowing through the current control circuit according to the display data signal; the time control circuit is configured to receive the driving current, and receive a time data signal, a first light-emitting control signal and a second light-emitting control signal, and control a flowing time period of the driving current according to the time data signal, the first light-emitting control signal and the second light-emitting control signal.Type: GrantFiled: January 25, 2019Date of Patent: April 26, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Dongni Liu
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Patent number: 11315507Abstract: A display panel control method, a display panel control device, and a display panel. The control method comprises: obtaining a first polarity of a drive voltage of a first pixel column, a second polarity of a drive voltage of a green pixel column, and a third polarity of a drive voltage of a third pixel column (S10); when the second polarity is opposite to the first polarity and the third polarity, determining a voltage compensation value of each of green sub-pixels according to a preset common voltage value and the current common voltage value (S30); and reducing the corresponding first voltage according to each of the voltage compensation values (S40).Type: GrantFiled: December 6, 2019Date of Patent: April 26, 2022Assignee: HKC CORPORATION LIMITEDInventor: Liang Zhang
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Patent number: 11315449Abstract: A detection circuit includes: a first detection sub-circuit for outputting a first data signal to red sub-pixels under the control of a first scanning signal; a second detection sub-circuit for outputting the first data signal to green sub-pixels under the control of a second scanning signal; a third detection sub-circuit for outputting a second data signal to blue sub-pixels under the control of the second scanning signal; and a fourth detection sub-circuit for outputting the second data signal to preset sub-pixels under the control of the first scanning signal; wherein the preset sub-pixels are any one of red sub-pixels, green sub-pixels and blue sub-pixels.Type: GrantFiled: January 3, 2019Date of Patent: April 26, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xueguang Hao, Yong Qiao, Xinyin Wu
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Patent number: 11315492Abstract: The present disclosure relates to display devices and methods of driving the display devices. In accordance with embodiments of the present disclosure, it is possible to improve image quality of a display device by reducing a sensing time for sensing one or more characteristic values of at least one driving transistor disposed in at least one sub-pixel. Further, it is possible to perform optimal sensing and compensation for at least one driving transistor by setting a minimum sensing time for one or more characteristic values of the at least one driving transistor and changing the sensing time according to a sensing available time of the display device.Type: GrantFiled: October 1, 2020Date of Patent: April 26, 2022Assignee: LG Display Co., Ltd.Inventors: SoekMin Choi, NakJin Seong, MooKyoung Hong
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Patent number: 11308879Abstract: An organic light emitting display device includes a pixel, a data line, a first scan line, a second scan line, and a scan driver. The pixel includes a first transistor, a second transistor, and a third transistor. A source of the first transistor is electrically connected to a drain of the third transistor. A source of the second transistor is configured to receive an initialization voltage. The data line is electrically connected to a source of the third transistor and may transmit a data voltage higher than the initialization voltage. The first scan line is electrically connected to a gate of the third transistor. The second scan line is electrically connected to a gate of the second transistor. The scan driver may provide an initializing scan signal to the second scan line at least two horizontal periods before providing an initial scan signal to the first scan line.Type: GrantFiled: November 24, 2020Date of Patent: April 19, 2022Inventors: Jong Won Park, Won Kyu Kwak, Seung Kyu Lee
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Patent number: 11308866Abstract: The present disclosure proposes an OLED pixel compensation circuit and an OLED pixel compensation method. The OLED pixel compensation circuit includes an OLED, a driving transistor, a first TFT, a second TFT, a third TFT, a fourth TFT, a first capacitor, and a second capacitor. The present disclosure adopts 5T2C structure and the driving transistor is a double gate TFT to compensate the variance of the threshold voltage such that the luminance evenness is raised and the lifetime of the product is extended.Type: GrantFiled: November 6, 2019Date of Patent: April 19, 2022Inventors: Fan Tian, Zhenling Wang
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Patent number: 11308875Abstract: A detection method of a pixel circuit, a display panel and a driving method thereof are provided. The detection method includes: during a reference charging period, applying a reference data voltage to a gate electrode of a driving transistor, and at a first time duration after applying the reference data voltage, obtaining a benchmark voltage from a sensing line; and during a data charging period, applying a detection data voltage different from the reference data voltage to the gate electrode of the driving transistor, and at the first time duration after applying the detection data voltage, obtaining an initial sensing voltage from the sensing line. A sensing voltage of the pixel circuit is obtained based on at least the benchmark voltage and the initial sensing voltage, and a threshold voltage of the driving transistor is obtained based on the sensing voltage.Type: GrantFiled: January 15, 2019Date of Patent: April 19, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Danna Song
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Patent number: 11308886Abstract: A pixel driving circuit includes: a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, a sixth thin film transistor, a seventh thin film transistor, an eighth thin film transistor, a first capacitor, and an organic light emitting diode (OLED). Gates of the seventh thin film transistor and the eighth thin film transistor respectively input a first scanning signal and a second scanning signal, and when the first scanning signal is at a low level, a reverse bias reset can be performed on the OLED.Type: GrantFiled: January 16, 2020Date of Patent: April 19, 2022Inventor: Jiangkun Cheng
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Patent number: 11308876Abstract: A pixel driving circuit including: N pixel circuits each including a first node and a power supply terminal, N being an integer greater than 1; and N multiplexing circuits configured to selectively couple a data line to the first nodes of the N pixel circuits. A first one of the N multiplexing circuits includes a multiplexing control circuit, and a second one to an N-th one of the N multiplexing circuits include respective multiplexing control circuits and respective reset circuits. The reset circuit of a (j+1)-th one of the N multiplexing circuits is configured to reset the first node of a (j+1)-th one of the N pixel circuits with a power supply voltage in response to a j-th multiplexing control signal being active, j being an integer and 1?j<N.Type: GrantFiled: March 28, 2019Date of Patent: April 19, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Dongni Liu, Minghua Xuan, Xiaochuan Chen, Lei Wang, Zheng Fang, Li Xiao, Liang Chen, Shengji Yang, Pengcheng Lu
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Patent number: 11308840Abstract: The present disclosure relates to a technology for a low power operation of a display device. The present disclosure allows reducing power consumption by supplying image data of a pixel of a preceding line again for a pixel of a current line without transmitting new image data when image data are repeated in units of pixels.Type: GrantFiled: November 20, 2020Date of Patent: April 19, 2022Assignee: SILICON WORKS CO., LTD.Inventors: Jung Min Choi, Jong Min Park, Woong Jin Oh
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Patent number: 11308857Abstract: A gate driver includes first and second stages. Each of the first and second stages includes an output circuit which outputs a scan signal, a carry signal and an inverted carry signal based on voltages of first and second nodes, a first input terminal, a second input terminal, a third input terminal, a first output terminal, and a second output terminal. The first stage further includes a first input circuit which controls the voltages of the first and second nodes thereof based on a start pulse and a signal supplied to the second input terminal. The second stage further includes a second input circuit which controls the voltages of the first and second nodes thereof based on a first carry signal and a first inverted carry signal, and a signal supplied to the second input terminal. The second stage is dependently connected to the first stage.Type: GrantFiled: March 16, 2021Date of Patent: April 19, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Hai Jung In
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Patent number: 11309698Abstract: An electrostatic prevention circuit, an array substrate and a display device are provided. The electrostatic prevention circuit includes an electrostatic prevention sub-circuit, and the electrostatic prevention sub-circuit includes a thin film transistor and a capacitor; a gate electrode of the thin film transistor is connected to the capacitor, and the thin film transistor is controlled by a signal passing through the capacitor.Type: GrantFiled: December 15, 2017Date of Patent: April 19, 2022Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Haobo Fang, Yanna Xue, Zhiying Bao, Yong Zhang, Lei Mi, Lu Bai, Gang Hua, Jingpeng Wang, Lingxiang Yuan
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Patent number: 11302269Abstract: An organic light emitting diode (OLED) display includes pixel rows, and a panel driver configured to drive the display panel. The panel driver includes a determining circuit configured to select one pixel row from the plurality of pixel rows, to determine load data based on input image data for the one pixel row, and to determine target mobility data corresponding to the load data, a sensing circuit configured to generate mobility sensing data corresponding to mobility values of driving transistors of a plurality of pixels included in the one pixel row by performing a mobility sensing operation on the one pixel row, and a current control circuit configured to compare the mobility sensing data and the target mobility data to generate a result, and to adjust a panel current flowing through the display panel according to the result.Type: GrantFiled: April 22, 2021Date of Patent: April 12, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kyunho Kim, Sangan Kwon, Yong-Jin Shin, Joonsuk Baik
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Patent number: 11302259Abstract: A display apparatus includes a display panel, a gate driver, a data driver, a driving controller and a power voltage generator. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line. The data driver outputs a data voltage to a data line. The driving controller drives display areas of the display panel in different driving frequencies. The power voltage generator outputs a data power voltage to the data driver. The driving controller outputs an output data enable signal including a writing period having an active signal and a holding period having an inactive signal for the respective display areas. The power voltage generator generates the data power voltage having a high power voltage level during the writing period and a low power voltage level in at least a portion of the holding period.Type: GrantFiled: January 7, 2021Date of Patent: April 12, 2022Inventors: Sehyuk Park, Hongsoo Kim, Jinyoung Roh, Bonghyun You, Hyojin Lee, Jaekeun Lim
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Patent number: 11302252Abstract: A method for improving a display effect of a display screen includes: determining a current voltage loss of a first electrode at a preset area of the display screen when the preset area of the display screen is switched from a first state to a second state; obtaining a preset drain voltage for a second electrode at the preset area of the display screen; and determining a target drain voltage of the second electrode of the display screen based on the current voltage loss and the preset drain voltage, to enable a voltage difference between the first electrode and the second electrode of the display screen to be equal to a preset voltage difference.Type: GrantFiled: December 22, 2020Date of Patent: April 12, 2022Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.Inventor: Jinshan Liu
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Patent number: 11303197Abstract: A low-pass filter, a switching control circuit, a driving system, a chip and methods are disclosed. The low-pass filter performs digital differential-integral process on a voltage of an acquired analog signal and a predefined reference voltage to generate differential-integral signals, accumulates a count of the differential-integral signals, and convert the result to an analog signal. By performing differential-integral process accumulating a count of the differential-integral signals, a low-pass filtered signal is obtained in a way that solves the problem of low integrity of circuits in conventional driving systems, reduces the complexity of external circuits for such driving systems and increases their circuit stability.Type: GrantFiled: March 5, 2021Date of Patent: April 12, 2022Assignee: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.Inventors: Fuqiang Zhang, Xiaoru Gao
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Patent number: 11295697Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.Type: GrantFiled: November 9, 2020Date of Patent: April 5, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jahun Koo, Haksun Kim, Kyung-hun Lee
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Patent number: 11294610Abstract: A method for an automated production of printing substrates on at least one printing machine having at least one computer, includes feeding print jobs to the computer in a printer job queue. The computer analyzes the print jobs in the printer queue in terms of defined minimum numbers before the print jobs are processed and the print jobs are not processed on the printing machine until a threshold of a defined minimum number is attained.Type: GrantFiled: February 3, 2021Date of Patent: April 5, 2022Assignee: Heidelberger Druckmaschinen AGInventor: Martin Kluepfel
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Patent number: 11289018Abstract: A display device includes: a net power control circuit configured to analyze a screen load from an input image signal to generate a load signal including a load value corresponding to the screen load; and an overcurrent protection circuit configured to set a set current value at a predetermined ratio with respect to a global current value corresponding to the load value included in the load signal, and to determine whether or not the display device is powered off based on the set current value.Type: GrantFiled: October 7, 2020Date of Patent: March 29, 2022Assignee: Samsung Display Co., Ltd.Inventors: Kyun Ho Kim, Yong-Jin Shin, Seong Jun Kim, Jung-Taek Kim, Joon Suk Baik, Se Keun Lee, Uk Jae Jang, Sang Su Han
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Patent number: 11288679Abstract: A system for authorizing an electronic transaction in an augmented reality environment comprises an augmented reality user device and an authentication server. The augmented reality user device includes a display that overlays virtual objects onto a field of view of the user. The user device receives a request to verify information about a payment card used in an electronic transaction. The request includes a virtual authentication object, which is a virtual representation of an object capable of being manipulated by the user in a particular sequence to enter an authentication code. The user device displays the virtual authentication object to the user and detects gestures performed on the virtual authentication object. The user device sends the detected gestures to the authentication server. The authentication server determines the authentication code using the virtual authentication object and the detected gestures, and uses it to authorize the transaction.Type: GrantFiled: February 6, 2020Date of Patent: March 29, 2022Assignee: Bank of America CorporationInventors: Amanda J. Adams, Joseph N. Johansen, Michael Ogrinz, Heather Dolan, William P. Jacobson, Manu J. Kurian
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Patent number: 11289019Abstract: There is provided a pixel circuit including: a light-emitting element; a driving transistor whose source is connected to an anode of the light-emitting element; a sampling transistor, whose source is connected to a gate of the driving transistor, that samples a signal voltage to be written to the driving transistor; and a reset transistor that resets the anode of the light-emitting element to a predetermined potential at a predetermined timing. The reset transistor switches from on to off before the signal voltage is written to the driving transistor, switches from off to on while the signal voltage is being written to the driving transistor after the switching, and switches from on to off before a period in which the light-emitting element emits light after the writing.Type: GrantFiled: October 26, 2018Date of Patent: March 29, 2022Assignee: Sony Semiconductor Solutions CorporationInventor: Naobumi Toyomura