Display Power Source Patents (Class 345/211)
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Patent number: 12254153Abstract: A touch panel and a display apparatus are provided. The touch panel includes a first component region and a touch region, first-type touch electrode blocks, and m2 first connecting lines. First and second touch regions are respectively located at two sides of the first component region along a first direction. The first-type touch electrode blocks include first touch electrode blocks in the first touch region and second touch electrode blocks in the second touch region. m1 first touch electrode groups are arranged in the first touch region along a second direction. First connecting lines are respectively electrically connected to the first touch electrode groups and the second touch electrode blocks.Type: GrantFiled: August 22, 2023Date of Patent: March 18, 2025Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Qibing Wei, Peng Zhang
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Patent number: 12255192Abstract: A display device includes a display portion mounted with a first LED and a second LED are mounted, a pixel circuit portion provided with a first pixel-circuit thin film transistor electrically connected to the first LED and a second pixel-circuit thin film transistor electrically connected to the second LED, a drive circuit portion provided with a drive-circuit thin film transistor, and a shielding layer provided between the display portion and the drive circuit portion. A fixed potential is applied to the shielding layer. The second LED overlaps the drive circuit portion with the shielding layer therebetween.Type: GrantFiled: August 9, 2021Date of Patent: March 18, 2025Assignee: JAPAN DISPLAY INC.Inventors: Masanobu Ikeda, Yoshinori Aoki, Akihiro Ogawa
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Patent number: 12254851Abstract: The application provides a brightness detection method, a computer device and a readable medium, where the brightness detection method includes: using each of display modules in a display module production line as a test module separately, where the test module is provided with a photosensitive sensor; obtaining a brightness algorithm formula of the photosensitive sensor of each of the test module; and performing, according to the brightness algorithm formula, ambient light detection by the photosensitive sensor.Type: GrantFiled: January 29, 2022Date of Patent: March 18, 2025Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yilin Feng, Zhaohui Meng, Yuxin Bi, Zhengri Lin, Yang Gao
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Patent number: 12236873Abstract: A display device includes a display panel which includes a pixel including a driving transistor and a light-emitting element, and a sensing line connected to the pixel. A sensing driver senses a first sensing signal corresponding to mobility of the driving transistor through the sensing line, and processes the first sensing signal to output first sensing data. A driving controller receives the first sensing data from the sensing driver, generates mobility compensation data and kickback compensation data based on the first sensing data, and converts image data into compensation image data by the mobility compensation data and the kickback compensation data. A data driver converts the compensation image data into a data signal and provides the data signal to the pixel.Type: GrantFiled: August 26, 2023Date of Patent: February 25, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kang-Min Kim, Dongin Kim, Byoungchel Kim, Jahun Koo, Yeong Won Kim, Bongim Park, Gyusu Lee, Hye Ryeon Jo
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Patent number: 12238988Abstract: A display device includes a substrate including a display area and a peripheral area disposed outside of the display area. The display area includes a plurality of pixels. The display device further includes an inorganic insulating layer disposed in the display area. The inorganic insulating layer includes a groove disposed in a region between the plurality of pixels. The display device further includes an organic material layer filling the groove, a first connection wiring, and a second connection wiring. The first connection wiring is disposed on the organic material layer, overlaps the plurality of pixels, and extends in a second direction. The second connection wiring is insulated from the first connection wiring, and extends in a first direction that crosses the second direction.Type: GrantFiled: November 15, 2021Date of Patent: February 25, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Juchan Park, Sunho Kim, Younggug Seol, Sunhee Lee, Joosun Yoon, Jonghyuk Lee, Jonghyun Choi
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Patent number: 12236865Abstract: A method of driving a display device, where the display device includes a display substrate including a plurality of rows of pixel circuits, and in each pixel circuit, a reset compensation circuit and a data writing circuit are connected at a second node, and the reset compensation circuit is connected to a reset control signal line and a first voltage input terminal; in a driving stage, driving a light emitting device OLED connected to each of other rows of pixel circuits except a last row of pixel circuits further includes a charge maintenance stage performed after a light emission voltage generation stage; and in the stable display stage, all light emitting devices OLED simultaneously emit light; where in the charge maintenance stage, the first voltage input terminal is disconnected from the second node by the reset compensation circuit in response to control of a reset control signal.Type: GrantFiled: June 17, 2021Date of Patent: February 25, 2025Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Guo Liu, Ziyang Yu, Maoying Liao
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Patent number: 12230190Abstract: A micro-light emitting diode (micro-LED) display backplane includes a plurality of macro-pixels. Each macro-pixel includes: a contiguous two-dimensional (2-D) array of bitcells storing display data bits for driving a set of micro-LEDs of a 2-D array of micro-LEDs; and drive circuits configured to generate, based on the display data bits stored in the contiguous 2-D array of bitcells, pulse-width modulated (PWM) drive signals for driving the set of micro-LEDs of the 2-D array of micro-LEDs. In one example, the plurality of macro-pixels is grouped into a plurality of sub-arrays, where each sub-array of the plurality of sub-arrays includes a set of macro-pixels and a local periphery circuit next to the set of macro-pixels. The local periphery circuit includes, for example, a buffer, a repeater, a clock gating circuit for gating an input clock signal to the sub-array, and/or a sub-array decoder for selecting the sub-array.Type: GrantFiled: November 2, 2022Date of Patent: February 18, 2025Assignee: Meta Platforms Technologies, LLCInventors: Daniel Henry Morris, Michael Yee
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Patent number: 12217685Abstract: A display device includes a plurality of pixels, each of which includes a light emitting element and a pixel driving circuit and a plurality of sensors, each of which includes a light receiving element and a sensor driving circuit. A sensor driving circuit included in at least one of sensors includes a reset transistor configured to output a reset signal to a first sensing node in response to a reset control signal, an amplification transistor connected to first and second sensing nodes and configured to receive a sensor driving voltage, a first output transistor connected between the second sensing node and a readout line and configured to receive a first output control signal, and a second output transistor connected between the second sensing node and the readout line and configured to receive a second output control signal.Type: GrantFiled: August 16, 2023Date of Patent: February 4, 2025Assignee: Samsung Display Co., Ltd.Inventors: Heerim Song, Cheol-Gon Lee, Mukyung Jeon
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Patent number: 12211408Abstract: An apparatus for evaluating a lifetime of a display panel including first pixels disposed in a first display area and second pixels disposed in a second display area, includes: a controller for driving the first pixels with a first grayscale and the second pixels with a second grayscale during an aging period calculating a first current, a second current, and a third current, which are supplied to the display panel; a luminance calculator for calculating a first luminance of the first display area and calculating a second luminance of the second display area; and a corrector for calculating a first correction current and a second correction current. The controller calculates a first efficiency lifetime and a second efficiency lifetime, and evaluates the lifetime of the display panel based on the first efficiency lifetime and the second efficiency lifetime.Type: GrantFiled: October 30, 2023Date of Patent: January 28, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Si Jin Sung, Sae Ron Park
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Patent number: 12198610Abstract: The present application discloses a display panel, a display apparatus and a method for driving the display panel. The display panel includes a pixel circuit and a light-emitting element; the pixel circuit includes a data writing module and a driving module including a driving transistor; in a duration of an image frame of the display panel, an operation process of the pixel circuit includes a pre-light emission stage and a light emission stage; in a duration of at least one image frame, the pre-light emission stage of the pixel circuit includes a data writing stage and n1 bias stages, n1?1, and n1 is an integer; the data writing module is configured to provide a data signal to a gate of the driving transistor in the data writing stage and to provide a bias signal to the driving transistor in the bias stages.Type: GrantFiled: March 9, 2023Date of Patent: January 14, 2025Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventor: Mengmeng Zhang
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Patent number: 12190837Abstract: The present application provides a screen flicker debugging method of a display panel, an apparatus and a system. The display panel includes a first common voltage and a second common voltage. The voltage difference between the second common voltage and the first common voltage is configured as a reference voltage for deflection of the liquid-crystal molecules. The screen flicker debugging method of the display panel includes: acquiring a refresh rate interval of the display panel, and determining a minimum refresh rate; controlling the display panel to display a flickering picture with the minimum refresh rate; adjusting the reference voltage and acquiring flickering values of the flickering picture at different reference voltages; and determining the minimum flickering value and setting the corresponding reference voltage as the optimal reference voltage for the display panel. The flickering phenomenon of the display panel at high and low refresh rates is reduced.Type: GrantFiled: June 21, 2023Date of Patent: January 7, 2025Assignee: HKC CORPORATION LIMITEDInventors: Shixin Wei, Haijiang Yuan
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Patent number: 12175932Abstract: A display device includes: a light emitting diode; a driving transistor outputting current to the light emitting diode, the driving transistor being p-type and comprising a gate electrode, a first electrode, and a second electrode; a second transistor that is p-type and comprising a gate electrode, a first electrode, and a second electrode; a third transistor that is n-type and comprising a gate electrode, a first electrode, and a second electrode; a storage capacitor comprising a first electrode and a second electrode; and a hold capacitor, the second electrode of the third transistor being connected to the first electrode of the driving transistor, the first electrode of the second transistor being configured to receive a data voltage, and the second electrode of the second transistor being connected to the first electrode of the third transistor, the first electrode of the storage capacitor, and the second electrode of the hold capacitor.Type: GrantFiled: January 24, 2023Date of Patent: December 24, 2024Assignee: Samsung Display Co., Ltd.Inventor: Jong Hyun Choi
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Patent number: 12168390Abstract: The demand for automotive glazings, on which the intensity of the light transmitted can be controlled by the user, has been increasing as the public becomes more aware of the technology. The most common methods employed to make such glazings utilize Suspended Particle Devices (SPD) and Polymer Dispersed Liquid Crystal (PDLC) films. With both, the light transmission of the glazing changes in response to an alternating current electrical field. A problem with this technology is that the voltage required is far higher than that of the typical automotive electrical system. The disclosure provides a touch potential safe, small, lightweight and inexpensive means for controlling the light transmission of multiple glazing circuits by combining a single flyback voltage converter with multiple variable amplitude sinewave generators all coordinated by a micro-controller.Type: GrantFiled: February 5, 2022Date of Patent: December 17, 2024Assignee: AGP America S.A.Inventors: Mario Arturo Mannheim Astete, Jose Roman Carrillo Rojas, Ian Jarm Riofrio VĂ©liz
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Patent number: 12164361Abstract: A display device comprises a display panel including a pixel connected to a data line, a power management circuit including a first voltage generating circuit which generates a first driving voltage and provides the first driving voltage to a data driver in a normal mode, a first voltage converter which generates a parking voltage less than the first driving voltage and provides the parking voltage to the data driver in a low power mode, and a second voltage converter which generates a second driving voltage and provides the second driving voltage to the data driver in the low power mode, and a driving controller configured to receive input image data and to control the data driver and the power management circuit. The data driver provides a data voltage to the data line in the normal mode and provides the parking voltage to the data line in the low power mode.Type: GrantFiled: August 7, 2023Date of Patent: December 10, 2024Assignee: Samsung Display Co., Ltd.Inventors: Hyunho Lim, Yoosung Kim
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Patent number: 12159882Abstract: A display device includes a plate-like substrate having a first surface and a second surface, pixel units on the first surface, and a power supply voltage feeder on the second surface. The power supply voltage feeder outputs first and second power supply voltages applicable to the pixel units. The second power supply voltage is lower in potential than the first power supply voltage. The display device includes a first wiring conductor electrically connecting the power supply voltage feeder and the pixel units and a second wiring conductor electrically connecting the power supply voltage feeder and the pixel units. At least one of the first or second wiring conductor includes a planar conductive portion covering the first surface. The planar conductive portion includes connectors connected to the power supply voltage feeder on at least two sides of the substrate.Type: GrantFiled: November 27, 2020Date of Patent: December 3, 2024Assignee: KYOCERA COPORATIONInventors: Hiroaki Ito, Takanobu Suzuki
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Patent number: 12148764Abstract: An electronic device includes a substrate, a first bus line, a second bus line, a plurality of driving units, a first signal line and a second signal line. The first bus line is disposed on the substrate and outputs a first signal. The second bus line is disposed on the substrate and outputs a second signal. The driving units are disposed between the first bus line and the second bus line, and include a first driving unit and a second driving unit which are adjacent to each other. The first signal line is electrically connected to the first bus line and transmits the first signal to the first driving unit and the second driving unit. The second signal line is electrically connected to the second bus line and transmits the second signal to at least one of the first driving unit and the second driving unit.Type: GrantFiled: April 17, 2023Date of Patent: November 19, 2024Assignee: INNOLUX CORPORATIONInventors: Hsi-Chia Wu, Mei-Hsiu Pan, Tzu-Yi Liu, Chung-Wen Yen
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Patent number: 12142223Abstract: The embodiments relate to a display device that includes an input terminal through which a feedback voltage of a high-potential driving voltage is received from a display panel. An output terminal is included through which a high reference voltage and a low reference voltage generated on the basis of the feedback voltage are output. A flexible printed circuit board (FPCB) includes at least one capacitor connected between the input terminal and the output terminal.Type: GrantFiled: July 21, 2023Date of Patent: November 12, 2024Assignee: LG Display Co., Ltd.Inventors: Wonsuk Lee, Joonmo Yang
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Patent number: 12142937Abstract: A power transmitting apparatus (100) derives data corresponding to a reference for power loss between the power transmitting apparatus (100) and a power receiving apparatus (200) on a basis of a value of reception power received from the power receiving apparatus; and performs a foreign object detection based on the data corresponding to the reference for power loss. The power transmitting apparatus (100) re-derives the data corresponding to the reference for power loss, when a change in the power transmission and reception state is detected in a power-transmittal range of the power transmitting apparatus (100).Type: GrantFiled: December 9, 2022Date of Patent: November 12, 2024Assignee: Canon Kabushiki KaishaInventor: Tomoki Hiramatsu
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Patent number: 12118940Abstract: A control method is a method of a display device including a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element, a drive transistor, and a pixel capacitance. The drive transistor includes a gate and a source. A frame period includes a first subframe period and at least one second subframe period. In the first subframe period, the control method includes: (A) applying a first initialization potential to the source; (B) writing a signal into the pixel capacitance; and (C) causing the light emitting element to emit light. In each of the at least one second subframe period, the control method includes: (D) maintaining the light emitting element in a non-emission state; (E) applying a second initialization potential to the source in (D); and (F) causing the light emitting element to emit light.Type: GrantFiled: June 14, 2023Date of Patent: October 15, 2024Assignee: JDI DESIGN AND DEVELOPMENT G.K.Inventors: Hiroshi Fujimura, Hitoshi Tsuge
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Patent number: 12099264Abstract: Systems and methods for providing an electrical waveform to a pi-cell polarization switch. The electrical waveform may reduce/limit ion accumulation in and/or light leakage associated with the polarization switch. The electrical waveform may include multiple segments, e.g., a first segment may drive the polarization switch to a first polarization state and may be defined by a first portion having a first voltage level and a first polarity and a second portion having the first voltage level and a second polarity opposite the first polarity and a second segment, occurring after the first segment, that may drive the polarization switch to the second polarization state. The second segment may be defined by a second voltage level having the first polarity. An absolute value of the first voltage level may be greater than an absolute value of the second voltage level.Type: GrantFiled: August 16, 2022Date of Patent: September 24, 2024Assignee: zSpace, Inc.Inventors: Hsienhui Cheng, Jianhong Huang
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Patent number: 12094412Abstract: An electronic device includes a substrate, a load element, a power supply circuit, and a compensation circuit. The substrate includes an active area and a peripheral area. The peripheral area is adjacent to the active area. The load element is disposed on the substrate and disposed in the active area. The power supply circuit is disposed on the substrate and disposed in the active area. The power supply circuit is electrically connected to the load element. The compensation circuit is disposed on the substrate and disposed in the peripheral area. The compensation circuit compensates the power supply circuit and/or the load element.Type: GrantFiled: March 31, 2023Date of Patent: September 17, 2024Assignee: Innolux CorporationInventor: Sheng-Feng Huang
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Patent number: 12088101Abstract: A circuit arrangement for controlling a plurality of loads of an electrical appliance has a main control module, arranged in a first voltage range and configured to generate control data for controlling a plurality of loads, which are arranged in a second voltage range. A galvanic isolation unit transfers the control data via a galvanically isolated connection from the first voltage range to the second voltage range. At least one auxiliary control module has a plurality of control outputs for the loads and an LED driver for operating a corresponding plurality of LED arrangements via the of control outputs, and/or a general-purpose input/output expansion circuit with programmable control outputs. Based on the control data, the auxiliary control module identifies a first control output for controlling the first load and causes the first load to be controlled via the first control output.Type: GrantFiled: January 18, 2022Date of Patent: September 10, 2024Assignee: BSH Hausgeraete GmbHInventors: Martin Gerhardt, Martin Pflauminger
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Patent number: 12087894Abstract: A display device includes a substrate, a plurality of first pixels and a plurality of second pixels provided to the substrate, a plurality of inorganic light emitting elements provided to the respective first pixels and the respective second pixels, a plurality of signal lines configured to supply a signal to the first pixels and the second pixels, and a plurality of power supply lines configured to supply a power supply potential to the first pixels and the second pixels. At least one or more of the signal lines are provided in a layer different from a layer of the power supply lines in the first pixels, and the signal lines and the power supply lines are provided in the same layer in the second pixels.Type: GrantFiled: September 23, 2021Date of Patent: September 10, 2024Assignee: Japan Display Inc.Inventors: Masanobu Ikeda, Osamu Itou, Yoshinori Aoki
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Patent number: 12086628Abstract: An electronic apparatus includes: a memory which temporarily stores a program of a system; a first processor which executes the program to implement functions of the system; a second processor which detects a face area with a face captured therein from an image captured by an imaging unit; and a third processor which switches between and executes first processing in which, when the face area is detected by the second processor, first information is output, while when the face area is not detected, second information is output, and second processing to output the first information despite detection of the face area by the second processor. When there is no operation input by a user over a certain period of time, the first processor restricts use of at least some of the functions of the system.Type: GrantFiled: October 6, 2022Date of Patent: September 10, 2024Assignee: Lenovo (Singapore) Pte. Ltd.Inventors: Kazuhiro Kosugi, Masashi Nishio, Eri Shimizu
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Patent number: 12080221Abstract: A display device comprises pixels arranged along rows and columns, and including light-emitting elements, a first transistor for supplying a driving current to the light-emitting elements, a second transistor for supplying a data voltage to a first node at a gate electrode of the first transistor, a third transistor for electrically connecting a second node, which is at a first electrode of the light-emitting elements, and a sensing line, and a fourth transistor for electrically connecting a third node, which is at a second electrode of the light-emitting elements, and the sensing line, and a display driver for driving the pixels, for sensing voltages of the second node and the third node to calculate a driving voltage across the light-emitting elements, and for compensating for the data voltage in case that the driving voltage exceeds a reference voltage.Type: GrantFiled: October 13, 2022Date of Patent: September 3, 2024Assignee: Samsung Display Co., Ltd.Inventors: Jin Won Jang, Seung Won Kuk
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Patent number: 12073786Abstract: A pixel of display device includes a light emitting element, a first transistor coupled between first power source and a second node and having a gate electrode connected to a first node N1, and the first transistor being configured to control a driving current supplied to the light emitting element in response to a voltage of the first node, a first capacitor including one electrode connected to the first node and another electrode connected to a third node, a second transistor coupled between the third node and a data line, a third transistor coupled between the first node and the second node, a fourth transistor coupled between the first node and an initialization power source, a fifth transistor coupled between a reference power source and the third node, and an eighth transistor coupled between a fourth node and an anode initialization power source.Type: GrantFiled: May 24, 2023Date of Patent: August 27, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jang Mi Kang, Jun Hyun Park, Min Jae Jeong
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Patent number: 12062337Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.Type: GrantFiled: May 16, 2023Date of Patent: August 13, 2024Assignee: Samsung Display Co., Ltd.Inventors: Hyun-Sik Yoon, Yong-Ju Jeong, Daeho Hwang
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Patent number: 12057510Abstract: An object is to provide a material suitably used for a semiconductor included in a transistor, a diode, or the like. Another object is to provide a semiconductor device including a transistor in which the condition of an electron state at an interface between an oxide semiconductor film and a gate insulating film in contact with the oxide semiconductor film is favorable. Further, another object is to manufacture a highly reliable semiconductor device by giving stable electric characteristics to a transistor in which an oxide semiconductor film is used for a channel. A semiconductor device is formed using an oxide material which includes crystal with c-axis alignment, which has a triangular or hexagonal atomic arrangement when seen from the direction of a surface or an interface and rotates around the c-axis.Type: GrantFiled: June 22, 2023Date of Patent: August 6, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Motoki Nakashima, Tatsuya Honda
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Patent number: 12039941Abstract: An embodiment of the application discloses a backlight driving circuit, a display panel, and an electronic device, including a light-emitting unit, a scan control unit, and a light-emitting control unit. The number of transistors in the scan control unit is increased to enable each transistor to alternately drive the light-emitting control unit to emit light, improving stability and extending the life of the backlight driving circuit.Type: GrantFiled: June 1, 2021Date of Patent: July 16, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Jinfeng Liu
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Patent number: 12032427Abstract: An apparatus for outputting a sound source for minimizing power consumption and an operating method thereof are disclosed. The sound source output method includes a terminal detecting step of detecting connection and a type of a terminal; a power control processing step of generating a power control signal so as to correspond to an audio transmitting method according to the detected terminal type and controlling a power supply operation to a conversion processing unit and an amplification processing unit connected to a power source unit including at least one power block based on the power control signal; an audio signal generating step of generating at least one audio signal by performing signal converting and amplifying operations based on the power supplied based on the power supply operation; and an audio outputting step of outputting a final audio signal generated using audio signals according to the audio transmitting method.Type: GrantFiled: August 25, 2022Date of Patent: July 9, 2024Assignee: DREAMUS COMPANYInventor: Seung Ho Yu
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Patent number: 12033580Abstract: A display panel including a first pulse width modulation period and a second pulse width modulation period, in the first pulse width modulation period, a duty cycle of a light-emitting control signal in a light-emitting stage being a first duty cycle, in the second pulse width modulation period, the duty cycle of the light-emitting control signal in the light-emitting stage being a second duty cycle, the first duty cycle being greater than the second duty cycle, in the first pulse width modulation period, a time interval between the start time of the first reset stage and the start time of the data writing stage being t1, in the second pulse width modulation period, the time interval between the start time of the first reset stage and the start time of the data writing stage being t1, t1<t2.Type: GrantFiled: December 28, 2022Date of Patent: July 9, 2024Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.Inventor: Xiangwen Ma
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Patent number: 12032264Abstract: A method for driving an electro-optic display, the display having at least one display pixel coupled to a storage capacitor, the method include applying a waveform sequence to the at least one display pixel and connecting the storage capacitor to a first bias voltage, and maintaining a last frame voltage level on the display pixel after the completion of the applied waveform.Type: GrantFiled: December 1, 2022Date of Patent: July 9, 2024Assignee: E INK CORPORATIONInventors: Craig Lin, Haiyan Gu
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Patent number: 12027971Abstract: Disclosed is a display apparatus including: a display; a transformer configured to boost an input alternating current (AC) first voltage and output a second voltage; a switch configured to allow an electric current to flow or stop in the transformer based on a control signal; a power factor correction (PFC) converter configured to correct a power factor of the output second voltage, and output a direct current (DC) third voltage to the display; and a controller configured to modulate a frequency of the control signal so that the second voltage has a target level, and increase or decrease the frequency of the control signal within a specified range to synchronize with an AC period of the first voltage.Type: GrantFiled: January 31, 2022Date of Patent: July 2, 2024Assignees: Samsung Electronics Co., Ltd., Kookmin University Industry Academy Cooperation FoundationInventors: Duhee Jang, Sangkyoo Han, Jeongil Kang, Hyosoon Choi, Kasan Ha
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Display device with each row of pixels disposed between two scanning lines, and electronic equipment
Patent number: 12020617Abstract: A display device and an electronic equipment are provided, which are belonging to a field of display technology. The display device includes a plurality of scanning lines and a plurality of pixels. By constructing a first scanning line and a second scanning line on two sides of a pixel row in a first direction, an overlapping of the first scanning line and/or the second scanning line with the pixel row in a thickness direction of the display device can be avoided, thereby keeping the voltages of the sub pixel electrodes of two adjacent pixels in a same row are the same.Type: GrantFiled: November 16, 2022Date of Patent: June 25, 2024Assignee: SUZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Zhijuan Long -
Patent number: 11990096Abstract: A display panel, a display drive circuit and a display drive method are provided in the present disclosure. The display drive circuit includes first shift registers from a first shift register of a 1st-stage to a first shift register of an Nth-stage; first shift registers of first A stages are virtual shift registers which are at least configured to make that an inputted second signal of a same pixel circuit has a delay of a set time length t relative to the first signal; and first shift registers of last (N-A) stages are at least configured to provide pixel circuits with the second signal; where t=a+b+c+d; and A = t t 0 * X . A particular drive time sequence is formed in the present disclosure, which improves the characteristics of the drive transistor, solve the display problem caused by the tailing problem of the output signal of the first shift register, and improve image display quality.Type: GrantFiled: November 29, 2022Date of Patent: May 21, 2024Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventor: Mengmeng Zhang
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Patent number: 11978375Abstract: A disclosed example includes a plurality of display pixels; timing controller circuitry; driver circuitry on a same integrated circuit as the timing controller circuitry, the driver circuitry to drive the display pixels; and de-multiplexer circuitry to de-multiplex pixel data to send to the plurality of display pixels.Type: GrantFiled: December 23, 2021Date of Patent: May 7, 2024Assignee: Intel CorporationInventors: Dong Yeung Kwak, Ramon C. Cancel Olmo, Thomas A. Nugraha, Jue Li
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Patent number: 11966268Abstract: Apparatus and methods for thermal management of electronic user devices are disclosed herein. An example apparatus includes at least one of a user presence detection analyzer to identify a presence of a user relative to an electronic device based on first sensor data generated by a first sensor or at least one of an image data analyzer or a motion data analyzer to determine a gesture of the user relative to the device based on second sensor data generated by a second sensor; a thermal constraint selector to select a thermal constraint for a temperature of an exterior surface of the electronic device based on one or more of the presence of the user or the gesture; and a power source manager to adjust a power level for a processor of the electronic device based on the thermal constraint.Type: GrantFiled: April 28, 2022Date of Patent: April 23, 2024Assignee: Intel CorporationInventors: Columbia Mishra, Carin Ruiz, Helin Cao, Soethiha Soe, James Hermerding, II, Bijendra Singh, Navneet Singh
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Patent number: 11967283Abstract: A pixel drive circuit, including a data input circuit, an energy storage circuit, a light-emitting control circuit, a first switch circuit, a second switch circuit and a third switch circuit. An end of the first switch circuit is connected with a control end of the light-emitting control circuit, and another end of the first switch circuit is connected with an input of the light-emitting control circuit that is connected to a power supply. An end of the second switch circuit is connected with an output of the data input circuit, and another end of the second switch circuit is grounded, and an output of the light-emitting control circuit is connected to an anode of a light-emitting device. The first switch circuit and the second switch circuit are switched on in a reset phase, and the third switch circuit is switched on in a light-emitting phase.Type: GrantFiled: July 26, 2023Date of Patent: April 23, 2024Assignee: HKC CORPORATION LIMITEDInventors: Renjie Zhou, Haoxuan Zheng
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Patent number: 11962238Abstract: Provided is a highly reliable electronic control unit capable of improving responsiveness of an output current of a switching power supply to load current variation and suppressing power supply voltage variation accompanying the load current variation at low cost and with high power efficiency. Provided are: a calculation unit that performs signal processing; a first power supply circuit that supplies a first power supply voltage to the calculation unit; and a second power supply circuit that supplies a second power supply voltage to the first power supply circuit. The calculation unit has a function of outputting a control signal when a change in a consumed current of the calculation unit exceeds a predetermined threshold, and changes any one or both of a control scheme of the first power supply circuit and the second power supply voltage according to the control signal.Type: GrantFiled: August 14, 2020Date of Patent: April 16, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Shigenobu Komatsu, Hideyuki Sakamoto
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Patent number: 11955059Abstract: Method, apparatuses, and systems are described to display image data to a sub-pixel within a micro-LED (mLED) display. A sub-pixel image data value is stored at the sub-pixel. The sub-pixel is turned to an ON state. A shared row counter value is provided to the sub-pixel. The shared row counter value and the sub-pixel image data value are compared at the sub-pixel. The sub-pixel is turned to an OFF state if the shared row counter value is equal to or greater than the sub-pixel image data value.Type: GrantFiled: March 25, 2022Date of Patent: April 9, 2024Assignee: FORTH DIMENSION DISPLAY, LTDInventor: Christopher Robert Chalmers
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Patent number: 11942045Abstract: A display device includes a display panel including a plurality of pixels, a data driver configured to provide data voltages to the pixels, and a gate driver configured to provide gate signals to the pixels. The display device also includes a controller configured to control the data driver and the gate driver, and to control the magnitude of a sensing initialization voltage applied to the pixels based on a frame rate value when operating in a variable frame mode.Type: GrantFiled: October 4, 2021Date of Patent: March 26, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Tae Seok Ha, Koung Soo Kim, Kyu Jin Park, Sung Jae Park, Seung Woon Shin, Woon Rok Jang
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Patent number: 11935444Abstract: A detection circuit, a driving circuit, and a display panel and a driving method therefor are provided. The detection circuit includes an acquisition circuit and a processing circuit. The acquisition circuit includes a test transistor and an energy storage element, where, for the test transistor, a control end is configured to be coupled to the data signal terminal, a first end is configured to be written with a detection signal, and a second end is coupled to the energy storage element; and a structural characteristic of the test transistor is identical to a structural characteristic of the driving transistor. The processing circuit is coupled to the second end of the test transistor, and configured to detect a voltage at the second end of the test transistor as a detection voltage and regulate the data signal according to the detection voltage.Type: GrantFiled: November 17, 2021Date of Patent: March 19, 2024Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jun Hong, Fei Xu, Jingyong Li, Yanbin Wang, Wenhong Tian, Lei Gong
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Patent number: 11922852Abstract: A display device and a driving system thereof are provided. The driving system of the display device includes a control module, a voltage conversion module, and a detection module which are interconnected. The detection module is added in the driving system of the display device to ensure that the voltage conversion module outputs a stable target voltage when the voltage conversion module is operated normally.Type: GrantFiled: October 22, 2020Date of Patent: March 5, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Wenfang Li
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Patent number: 11925049Abstract: The present disclosure provides a display device including a display panel, a main frame positioned behind the display panel, an inner plate positioned between the display panel and the main frame, a support plate mounted on a back surface of the display panel and facing the inner plate, and a coupling member for coupling the inner plate and the support plate, wherein the coupling member includes a first coupling member mounted on the support plate, and a second coupling member mounted on the inner plate and coupled to the first coupling member.Type: GrantFiled: July 13, 2022Date of Patent: March 5, 2024Assignee: LG ELECTRONICS INC.Inventors: Chulki Kim, Chunsoo Chang, Dabin Lee
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Patent number: 11922870Abstract: An example method includes programming, based on image data of a frame of a plurality of frames and during a non-emission period of the frame, pixels of a plurality of pixels of a display of a computing device; causing pixels of the plurality of pixels to emit light during an emission period of the frame, wherein an amount of light emitted by the pixels during the emission period is based on the programming; and synchronizing operation of one or more sensors and operation of the plurality of pixels by at least causing the one or more sensors to emit, during a particular portion of the emission period of the frame, electromagnetic radiation through the display.Type: GrantFiled: August 31, 2020Date of Patent: March 5, 2024Assignee: Google LLCInventors: Sangmoo Choi, Yi Zhang
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Patent number: 11915672Abstract: Methods, systems and computer devices are provided for adjusting a frame-listening cycle. The method includes: configuring, by a server, a fixed frame-listening cycle of an electronic shelf label according to a time period; and sending, by the server, a second frame-listening cycle modification command through a base station when the server is to issue the fast response service during the low power consumption time period, so that the electronic shelf label modifies the current frame-listening cycle to a fast frame-listening cycle according to the second frame-listening cycle modification command. According to the present disclosure, the electronic shelf label can not only respond to the fast response service in real time, but also keep the low power consumption of a long frame-listening cycle, thereby simultaneously satisfying the requirements of high real-time performance and low power consumption of the electronic shelf label.Type: GrantFiled: June 9, 2023Date of Patent: February 27, 2024Assignee: HANSHOW TECHNOLOGY CO., LTD.Inventors: Min Liang, Yaping Ji, Qi Jiang, Yujing Wang, Shiguo Hou
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Patent number: 11881146Abstract: A backlight module and display device, related to the display field. The backlight module includes a plurality of light-emitting elements and a controller, where the plurality of light-emitting elements serve as light sources for a plurality of sub-pixels respectively; and the controller is configured to control a brightness of each of the plurality of light-emitting elements. When the backlight module is in operation, if an i-th data line does not need to charge one of a plurality of sub-pixels connected to the i-th data line, the controller increases the brightness of the light-emitting element corresponding to a next sub-pixel when the next sub-pixel emits light. In this way, each sub-pixel can have an actual gray scale that reaches a target gray scale thereof, so that the uniformity of brightness of the display panel is improved.Type: GrantFiled: December 8, 2022Date of Patent: January 23, 2024Assignee: HKC CORPORATION LIMITEDInventors: Hongyan Chang, Wei Li
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Patent number: 11882719Abstract: The present disclosure provides a display device including a display panel, a main frame positioned behind the display panel, an inner plate positioned between the display panel and the main frame, a support plate mounted on a back surface of the display panel and facing the inner plate, and a coupling member for coupling the inner plate and the support plate, wherein the coupling member includes a first coupling member mounted on the support plate, and a second coupling member mounted on the inner plate and coupled to the first coupling member.Type: GrantFiled: July 13, 2022Date of Patent: January 23, 2024Assignee: LG ELECTRONICS INC.Inventors: Chulki Kim, Chunsoo Chang, Dabin Lee
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Patent number: 11848623Abstract: A voltage source inverter includes a bus capacitor, a bidirectional power tube, a filter inductor, and a filter capacitor. A voltage control method includes: respectively obtaining a first feedback current and a first feedback voltage from an output end of the filter inductor and an output end of the filter capacitor; obtaining a first duty cycle and a second duty cycle based on the first feedback current, a maximum current reference value, and a minimum current reference value in a current loop; obtaining a third duty cycle based on the first feedback voltage and a voltage reference value in a voltage loop; and selecting one of the first duty cycle, the second duty cycle, and the third duty cycle, and controlling the bidirectional power tube, so that a duty cycle of the bidirectional power tube is between the first duty cycle and the second duty cycle.Type: GrantFiled: February 10, 2022Date of Patent: December 19, 2023Assignee: Huawei Digital Power Technologies Co., LtdInventors: Lin Li, Zhiwu Xu, Haibin Guo
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Patent number: 11847956Abstract: A scan driver is disclosed that includes a plurality of stages for supplying scan signals to scan lines. A first stage among the stages includes: a first sub-stage circuit for generating a first scan signal, based on an input signal, a first clock signal, a second clock signal, a first power source, and a second power source; and a first charge pump circuit for supplying a bias voltage to the first sub-stage circuit, based on a third power source.Type: GrantFiled: December 19, 2022Date of Patent: December 19, 2023Assignee: Samsung Display Co., Ltd.Inventor: Hai Jung In