Patents Examined by Nelson Lam
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Patent number: 12743990Abstract: A display circuit includes a plurality of current source branches and a plurality of pixel branches. Each current source branch includes a first transistor and a control circuit. Each pixel branch includes a second transistor, a pulse width control switch transistor, and a pixel unit that are connected in series. The turned-on first transistor and the turned-on second transistor form a current mirror structure. In the current mirror structure, there is a proportional relationship between a current flowing through each of the plurality of first transistors and a current flowing through the turned-on second transistor. Whether each first transistor is turned on is controlled through the control circuit, to adjust a value of the current flowing through each pixel unit through the second transistor.Type: GrantFiled: December 20, 2024Date of Patent: September 22, 2026Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Kun Luo, Cuiping Zhang, Hezi Qiu
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Patent number: 12738227Abstract: A display device may include a unit pixel group including a plurality of pixels, a data driver which supplies a data signal to the unit pixel group through a data line, a gate driver which supplies first to third scan signals to the unit pixel group through first to third gate lines, and a power supply unit which supplies first to third power voltages to the unit pixel group through first to third power lines. The first power line includes a first sub power line to which a first sub power voltage is supplied, a second sub power line to which a second sub power voltage is supplied, and a third sub power line to which a third sub power voltage is supplied and the power supply unit supply the first to third sub power voltages to the first to third sub power lines in a time division manner.Type: GrantFiled: June 23, 2025Date of Patent: September 15, 2026Assignee: LG Display Co., Ltd.Inventors: Daeyoung Seo, ByungHyun Lee, TaeYong Kim, Sumin Lee
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Patent number: 12738246Abstract: A liquid crystal display module capable of being used in a low temperature environment is provided. The liquid crystal display module includes an LCD panel. The LCD panel includes a GOA circuit. The liquid crystal display module is equipped with a temperature sensor and a heating device. The temperature sensor and the heating device are located beside the GOA circuit. When the temperature sensor detects that the ambient temperature is close to a threshold temperature (e.g., 0° C.), the heating device starts heating. That is, the GOA circuit is not affected by the low temperature. Consequently, the GOA circuit will not fail, and the GOA circuit can be operated normally.Type: GrantFiled: August 20, 2024Date of Patent: September 15, 2026Assignee: POWERVIEW DISPLAY CORPORATIONInventor: Cheng-Pang Chien
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Patent number: 12731531Abstract: A pixel driving circuit, a pixel driving method, and a display panel. The pixel driving circuit includes: a current driving circuit, which is used for receiving a display data signal and a display control signal, and upon receiving the display control signal, outputting a driving current, which has an intensity corresponding to the display data signal; and a grayscale control circuit, which is used for receiving the driving current, a pulse width selection signal and a pulse width modulation signal, and according to the pulse width modulation signal, driving a light emitting element for a preset duration, where the preset duration is a first duration, a second duration or a third duration corresponding to the pulse width selection signal.Type: GrantFiled: July 18, 2023Date of Patent: September 8, 2026Assignee: UNILUMIN GROUP CO., LTD.Inventors: Hao Chen, Lingjun Liu, Shiliang Liu
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Patent number: 12711904Abstract: A stage circuit included in a gate driver of a display device, includes: a first transistor connected between an input terminal receiving an input signal and a control terminal, and including a gate electrode connected to a first clock terminal receiving a first clock signal: a second transistor connected between a line supplying a gate high voltage and an output terminal generating an output signal, and including a gate electrode connected to an inversion control terminal; a third transistor connected between the output terminal and a second clock terminal receiving a second clock signal, and including a gate electrode connected to the control terminal; a first capacitor connected between the control terminal and the output terminal; and a control circuit configured to controlling an inversion control voltage of the inversion control terminal based on a control voltage of the control terminal.Type: GrantFiled: December 2, 2024Date of Patent: August 18, 2026Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Keuk-Jin Jeong, Wongyun Kim, Min Kang
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Patent number: 12706022Abstract: A power manager includes a first driving voltage generator which supplies a first driving voltage to a first power line and a second driving voltage generator which supplies a second driving voltage to a second power line, where a voltage level of the second driving voltage is lower than a voltage level of the first driving voltage. During an initial driving period in which the first driving voltage is supplied to the first power line and before the second driving voltage is supplied to the second power line, the second driving voltage generator senses a voltage of the second power line, and a supply of the first driving voltage is controlled based on the voltage of the second power line.Type: GrantFiled: December 19, 2023Date of Patent: August 11, 2026Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yoon Young Lee, Sungchun Park
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Patent number: 12706051Abstract: A display substrate includes an underlay substrate, and a first semiconductor layer, first conductive layer, second semiconductor layer, second conductive layer, and third conductive layer which are arranged on the underlay substrate. The first semiconductor layer includes an active layer of at least one transistor of a second semiconductor type of a shift register unit. The first conductive layer includes a control electrode of the at least one transistor of the second semiconductor type and a first electrode of at least one capacitor of the shift register unit. The second semiconductor layer includes an active layer of at least one transistor of a first semiconductor type of the shift register unit. The second conductive layer includes a control electrode of the at least one transistor of the first semiconductor type and a second electrode of the at least one capacitor of the shift register unit.Type: GrantFiled: October 17, 2024Date of Patent: August 11, 2026Assignees: Chongqing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Teng Chen, Faming Jiang, Ri Chen, Xinxing Jia, Weixin Meng, Jonguk Kwak
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Patent number: 12699477Abstract: A touch sensing unit that minimizes a contact defect between conductive layers of a touch signal line includes a substrate; a touch electrode disposed in a touch sensor area of the substrate; and a touch signal line connected to the touch electrode and that extends to a touch peripheral area of the substrate. The touch signal line includes a first conductive layer disposed on the substrate, and a second conductive layer disposed on the first conductive layer with an insulating layer interposed therebetween. The second conductive layer is in contact with the first conductive layer through a contact hole in the insulating layer. The first conductive layer includes at least one of Mo, MoNb, Ti or Ta, and the second conductive layer includes at least one of Al or AlNb.Type: GrantFiled: July 21, 2023Date of Patent: August 4, 2026Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Chun Gi You
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Patent number: 12688822Abstract: A pixel circuit includes a first transistor, a second transistor for applying a data voltage to the first transistor, a third transistor for diode-connecting the first transistor, a fourth transistor for applying a first power voltage to a first electrode of the first transistor, a fifth transistor for connecting a second electrode of the first transistor and a fourth node, a sixth transistor for applying an initialization voltage, a seventh transistor, an eighth transistor for applying the data voltage to a fifth node in response to a second scan signal, a tenth transistor for applying a second power voltage to the fifth node, a twelfth transistor for applying the initialization voltage to the fourth node and a light emitting element. A sweep signal is applied to a control electrode of the first transistor, and the sweep signal is a global signal which has same timing across at least two pixel-rows.Type: GrantFiled: February 1, 2025Date of Patent: July 21, 2026Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwihyun Kim, Doyeong Park, Sehyun Lee, Haksun Chang
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Patent number: 12682865Abstract: A method for generating bistable ferroelectric liquid crystal drive signals may include storing, by an array of latches, colorfield data. The method may additionally include manipulating, by the array of latches and in response to a plurality of clock signals that include one or more outputs of the array of latches, the colorfield data. The method may also include providing, by one or more gates, one or more internal drive signals by comparing the one or more outputs of the array of latches. Various other methods, systems, and computer-readable media are also disclosed.Type: GrantFiled: December 12, 2024Date of Patent: July 14, 2026Assignee: Meta Platforms Technologies, LLCInventors: Thomas Charisoulis, Junhan Han, Yun Wang
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Patent number: 12682793Abstract: A method for correcting dimensional distortion when viewing a display at an angle is disclosed. In one embodiment, such a method identifies a line of sight of a user relative to a display. The method determines an angle of the line of sight relative to the display and a displacement of the user relative to the display. Using the angle and the displacement, the method determines an adjustment needed to reduce dimensional distortion of content on the display caused by the angle and the displacement. The method applies the adjustment to the content. In certain embodiments, applying the adjustment includes one or more of altering a size of the content on the display, altering proportions of the content on the display, and altering an orientation of the content on the display. A corresponding system and computer program product are also disclosed.Type: GrantFiled: October 12, 2023Date of Patent: July 14, 2026Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dong Chen, Xiang Wei Li, Xiang Juan Meng, Ting Ting Zhan, Xiao Juan Chen, Ye Huo
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Patent number: 12682812Abstract: A control method includes following operations: outputting a first control signal to a first switch coupled to a first sub-pixel of a display panel; outputting a second control signal to a second switch coupled to a second sub-pixel of the display panel; and outputting a driving voltage of display data according to a data output enable signal. The data output enable signal has a plurality of pulses, and a first time interval between a first pulse of the plurality of pulses and a second pulse of the plurality of pulses is shorter than a second time interval between the second pulse of the plurality of pulses and a third pulse of the plurality of pulses.Type: GrantFiled: January 3, 2025Date of Patent: July 14, 2026Assignee: NOVATEK Microelectronics Corp.Inventors: Hsuan-Sheng Yang, Ching-Wen Hou, Yu-Ren Chiu, Chi-Ming Lo
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Patent number: 12682813Abstract: In a voltage setting method of an electronic device, in which a plurality of sub-pixels are in a display device, and an anode initialization voltage applied to the plurality of sub-pixels is set, the voltage setting method includes: setting a data voltage for displaying an image having a black grayscale to an a-th level in the plurality of sub-pixels; applying the anode initialization voltage having a first level; determining whether a black floating phenomenon has been observed; decreasing the anode initialization voltage by a second level based on the black floating phenomenon being observed; applying the set anode initialization voltage; and writing a level of the set anode initialization voltage to the display device based on a determination that the black floating phenomenon has not been observed.Type: GrantFiled: January 13, 2025Date of Patent: July 14, 2026Assignee: Samsung Display Co., Ltd.Inventor: Si Beak Pyo
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Patent number: 12676103Abstract: A drive circuit, a display drive chip, a display apparatus, and an electronic apparatus are provided. The drive circuit includes a first stage circuit, a second stage circuit and an auxiliary circuit. The first stage circuit is configured to receive and amplify a first input signal and a second input signal to acquire a first output signal and a second output signal and output the first output signal and the second output signal to the second stage circuit. The second stage circuit is configured to output a third output signal based on the first output signal and the second output signal to drive a load. The second stage circuit is further connected to the first stage circuit via a Miller capacitor. The auxiliary circuit is connected to the first stage circuit and the second stage circuit for reducing an output impedance of the first stage circuit.Type: GrantFiled: April 16, 2024Date of Patent: July 7, 2026Assignee: Chipone Technology (Beijing) Co., Ltd.Inventor: Longshan Hu
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Patent number: 12669875Abstract: The invention relates to an input device, in particular for an electronic unit, preferably for a game controller, comprising an actuation element for the actuation of the input device by a user, having an actuation section accessible from outside the input device, wherein the actuation element can be brought into multiple actuation positions, which define an actuation range, by the user. Here, the actuation element can be displaced into the actuation positions by displacement in one or more displacement directions, which in particular lie substantially in a displacement plane. The input device furthermore comprises electronic position detection means which directly or indirectly detect an instantaneous actuation position of the actuation element.Type: GrantFiled: May 3, 2021Date of Patent: June 30, 2026Inventor: Korkut Tekerlek
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Patent number: 12664945Abstract: A display device is disclosed that includes a display panel including a display area in which pixels are disposed and a non-display area surrounding the display area, a level shifter disposed at at least one side of the non-display area and configured to generate a gate clock signal and an inverted signal having and a phase opposite to that of the gate clock signal, a control signal line configured to transmit the gate clock signal output from the level shifter to the pixels, and an inverted signal line configured to receive the inverted signal from the level shifter, wherein the inverted signal line is disposed in a closed loop shape surrounding the display area in the non-display area.Type: GrantFiled: September 23, 2024Date of Patent: June 23, 2026Assignee: LG Display Co., Ltd.Inventors: Donghwan Kim, Jaekwon Chae, Eunsup Yoon
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Patent number: 12658131Abstract: A gate signal masking circuit includes a first switching element including a control electrode connected to a masking control node, a first electrode connected to a first node and a second electrode connected to a control node, a second switching element including a control electrode connected to a second node, a first electrode receiving a first power and a second electrode connected to an intermediate node, a third switching element receiving an enable signal and connected to the intermediate node and a second intermediate node, a fourth switching element receiving the enable signal and connected to the second intermediate node and a third intermediate node, a fifth switching element connected to a third node and the third intermediate node and receiving a second power and a floating switching element receiving a floating control signal and connected to the masking control node and the third intermediate node.Type: GrantFiled: December 3, 2024Date of Patent: June 16, 2026Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Nahyeon Cha, Kyungho Kim
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Patent number: 12658084Abstract: The application relates to a detection method and a debugging method for a display panel, and a display panel. The method includes: obtaining a first node voltage and a second node voltage corresponding to target color pixel circuits in a target pixel column; adjusting, based on the first node voltage and the second node voltage, a data voltage inputted to each target color pixel circuit in the target pixel column, so that preset voltages of a plurality of target color pixel circuits are the same, where the preset voltage is a difference between the data voltage inputted to the target color pixel circuit and a voltage at a connection node between the target color pixel circuit and a detection signal line; and detecting the plurality of target color pixel circuits in the target pixel column, to obtain detected data of each target color pixel circuit.Type: GrantFiled: January 9, 2025Date of Patent: June 16, 2026Assignee: Yungu (Gu'an) Technology Co., Ltd.Inventor: Hongjun Xie
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Patent number: 12651552Abstract: A delay control circuit generates output timing signals that cause pixel drive signals to be output at timings after elapse of different delay times. The delay control circuit includes: first to sth delay timing signal generation circuits, generating first to kth delay timing signals that bring about output timings increasing in delay time; a control signal generation circuit, supplying a start pulse signal that initiates generation of the first to kth delay timing signals to the first to sth delay timing signal generation circuits; and a delay signal selection circuit, for each output channel with respect to first to sth delay timing signal groups each including the first to kth delay timing signals, selecting from among s delay timing signals the delay timing signal that brings about an earliest output timing, and setting the delay timing signals as the first to kth output timing signals.Type: GrantFiled: February 7, 2025Date of Patent: June 9, 2026Assignee: ROHM Co., Ltd.Inventor: Kunihiro Harayama
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Patent number: 12646480Abstract: A display device comprises: a display panel including a display area and a bezel area around the display area; a gate driving circuit driving a plurality of gate lines in the display area; an output line extending from the gate driving circuit; a jumping part in the bezel area and connecting the output line with a gate line of the plurality of gate lines; an output transistor in the gate driving circuit and connected to the output line; an output capacitor in the gate driving circuit between the output transistor and the jumping part, the output capacitor including a first electrode connected to a gate electrode of the output transistor and a second electrode partially overlapping the first electrode and the second electrode connected to a drain electrode of the output transistor and the output line, the first electrode including an extension region non-overlapping with the second electrode.Type: GrantFiled: November 27, 2024Date of Patent: June 2, 2026Assignee: LG Display Co., Ltd.Inventors: SangKwon Kim, Kyoung-Wook Kim, Junha Lee, Honggwon Lee, Hyunjung Woo