Patents Examined by Dorothy Harris
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Patent number: 11972717Abstract: Embodiments of the present disclosure provide a method of driving display, and a display device. The method of driving display includes: scanning, progressively or rows by rows, a plurality of sub-pixels arranged in an N×M array, to turn on each row of sub-pixels scanned, so that a duration in which two adjacent rows of sub-pixels are simultaneously in an ON state is greater than or equal to two times a unit scanning time, wherein the unit scanning time is a time required for scanning a row of sub-pixels, N is an integer greater than 1, and M is an integer greater than 1; and applying data signals to at least two rows of sub-pixels simultaneously in the ON state, so that a duration of applying the data signals to each row of sub-pixels is greater than the unit scanning time.Type: GrantFiled: March 13, 2023Date of Patent: April 30, 2024Assignees: Beijing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Zhihua Sun, Yinlong Zhang, Qiujie Su, Feng Qu, Jing Liu, Yanping Liao, Xibin Shao
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Patent number: 11972735Abstract: A display device comprises: a display panel including a scan line, a power supply line, and a pixel; a gate driver that supplies a scan signal to the pixel; and a bias driver that supplies a bias voltage to the pixel, wherein a driving period of the pixel includes a first and second frame that are different, wherein the first frame includes a first refresh period in which a first data voltage is written and a first reset period in which the first data voltage is maintained, wherein the second frame includes a second refresh period in which a second data voltage is written and a second reset period in which the second data voltage is maintained, and a first voltage pulse of the bias voltage during the first refresh period and a second voltage pulse of the bias voltage during the second refresh period are different.Type: GrantFiled: November 28, 2022Date of Patent: April 30, 2024Assignee: LG Display Co., Ltd.Inventor: Jaehyoung Kim
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Patent number: 11961468Abstract: A method for compensating for transistor aging in a display device is presented. The method entails dividing pixels into a plurality of groups including a first group, the first group including Z pixels wherein Z>1, sampling a pixel current for each pixel in a subset of pixels in the first group, the subset including M pixels wherein 1?M?Z, determining an ErrorM using the sampled pixel current for the M pixels and a predefined reference current, and adjusting an input voltage for a transistor in more than one of the Z pixels based on the ErrorM. The adjusting of the input voltage may include generating a modified voltage Vd, wherein Vd=A*Vin+B, and each of A and B is determined using ?M sign(Errorm).Type: GrantFiled: February 23, 2021Date of Patent: April 16, 2024Assignee: Samsung Display Co., Ltd.Inventors: Gaurav Malhotra, Anup Jose, Amir Amirkhany
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Patent number: 11955079Abstract: A pixel includes a display element, a driving transistor, a storage capacitor, a scan transistor, and a gate control circuit. The display element may emit light for an emission period, wherein the display element includes an anode and a cathode. The driving transistor may control an amount of a driving current flowing through the display element, wherein the driving transistor includes a first gate and a second gate. The storage capacitor is electrically connected to the first gate of the driving transistor. The scan transistor may be turned on for a data-write period for transferring a data voltage to the driving transistor. The lower gate control circuit may electrically connect the second gate of the driving transistor to the anode of the display element for the emission period, and may apply a bias voltage to the second gate of the driving transistor for the data-write period.Type: GrantFiled: August 19, 2022Date of Patent: April 9, 2024Assignee: Samsung Display Co., Ltd.Inventors: Soongi Kwon, Jihyun Ka, Minjeong Kim, Minku Lee, Seunghee Lee, Hyeongjun Jin
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Patent number: 11955087Abstract: A display device includes scan lines, pixels electrically connected to the scan lines, and a scan driver including stages for supplying scan signals through the scan lines to the pixels. The stages include a stage that includes the following elements: a first node setting unit for setting a voltage of a first node; a second node setting unit for setting a voltage of a second node based on the voltage of the first node; a third node setting unit for setting a voltage of a third node based on the voltage of the second node; and an output unit for outputting a scan signal based on the voltage of the third node. Each of the first and third node setting units includes an N-type transistor. The scan driver further includes a first charge pump for supplying a first bias voltage to a back-gate electrode of the N-type transistor.Type: GrantFiled: December 15, 2022Date of Patent: April 9, 2024Assignee: Samsung Display Co., Ltd.Inventor: Hai Jung In
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Patent number: 11948511Abstract: A pixel driving circuit includes: a switching transistor, an energy storage capacitor, and a driving transistor. The data voltage is charged to the energy storage capacitor when the switching transistor is conducted. When the switching transistor is switched off, the energy storage capacitor discharges to the driving transistor, allowing the driving transistor to output a driving current to the light-emitting unit to drive the light-emitting unit to emit light. The control module is connected in series with the driving transistor. In a process of the driving transistor outputting the driving current to the light-emitting unit, the control module detects a value of the driving current and is disconnected when the value of the driving current exceeds a preset current range.Type: GrantFiled: December 29, 2022Date of Patent: April 2, 2024Assignee: HKC CORPORATION LIMITEDInventors: Renjie Zhou, Haijiang Yuan
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Patent number: 11942038Abstract: Disclosed are a pixel driving circuit, a pixel driving method and a display panel. The pixel driving circuit includes the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, the fifth thin film transistor, the sixth thin film transistor and the capacitor. The pixel driving circuit can be regarded as a 3 T0.5C circuit structure, so that two adjacent light-emitting devices on the same column can share a pixel driving circuit, and the threshold voltage of the driving thin film transistor and a voltage drop of the supply voltage can be compensated, thus the influence of the threshold voltage defect of the driving thin film transistor and the voltage drop of the supply voltage on the current flowing through the light-emitting device can be eliminated, to improve the display uniformity of the self-light-emitting display panel.Type: GrantFiled: June 1, 2023Date of Patent: March 26, 2024Assignee: HKC CORPORATION LIMITEDInventors: Tao Fan, Haijiang Yuan
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Patent number: 11942035Abstract: A display panel, a method for driving a display panel, and a display device are provided. A first scanning driving unit is electrically connected to first scanning control terminals of first and second pixel driving circuits. A working cycle of the pixel driving circuit includes a data writing phase. The data writing phase of the first pixel driving circuit is prior to the data writing phase of the second pixel driving circuit in a display duration of one frame of an image. When the first pixel driving circuit and the second pixel driving circuit receive a same data voltage, a potential VN11 of the first node in the first pixel driving circuit after the data writing phase of the first pixel driving circuit is greater than a potential VN12 of the first node in the second pixel driving circuit after the data writing phase of the second pixel driving circuit.Type: GrantFiled: October 10, 2022Date of Patent: March 26, 2024Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Mengmeng Zhang, Yue Li
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Patent number: 11929024Abstract: The organic light emitting display device is driven to be divided into a refresh frame when the data voltage is programmed in the pixel and a reset frame when the anode electrode of the organic light emitting diode is reset, and the data voltage is maintained to a first level during the reset frame. Accordingly, a separate stage for applying an on bias stress is not provided so that the bezel may be reduced.Type: GrantFiled: November 29, 2021Date of Patent: March 12, 2024Assignee: LG Display Co., Ltd.Inventors: Minsu Kim, Wonkeun Park, Haejun Park, Jieun Kang, Youngtaek Hong
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Patent number: 11922876Abstract: Disclosed is a display device, which includes a display panel including a plurality of pixels, and one of the plurality of pixels includes a light emitting device connected to a first reference node and that emits light, a driving transistor connected between a power supply line receiving a power supply voltage and the first reference node, a scan transistor connected between a data line receiving a data signal and the driving transistor and that receives a scan signal, a first capacitor connected between the first reference node and a second reference node, a shared transistor connected between the first reference node and the second reference node and that receives a shared control signal, and the first capacitor and the shared transistor are connected in series between the first reference node and the second reference node, and a control electrode of the driving transistor is connected to the second reference node.Type: GrantFiled: August 30, 2022Date of Patent: March 5, 2024Assignee: Samsung Display Co., Ltd.Inventor: Min-Seok Bae
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Patent number: 11922878Abstract: A display panel includes: a pixel circuit, and a light-emitting element, that the pixel circuit includes a driving transistor configured to provide a driving current for the light-emitting element; a working process of the pixel circuit includes a data writing stage, in which a gate of the driving transistor receives a data signal, and a bias adjustment stage, in which a source or drain of the driving transistor receives a bias adjustment signal; and the pixel circuit has a frame refresh frequency F1, and a data refresh frequency including a first data refresh frequency F11 and a second data refresh frequency F22, that at least one second data refresh period includes N11 bias adjustment stages, a bias adjustment signal V11 is inputted in a first bias adjustment stage, and a bias adjustment signal Vi is inputted in an i-th bias adjustment stage, where V11?Vi.Type: GrantFiled: December 23, 2022Date of Patent: March 5, 2024Assignee: XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD.Inventor: Yuheng Zhang
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Patent number: 11922885Abstract: The present application discloses a display panel, a display driving method for display panel, and a display apparatus. The display panel includes a plurality of rows of pixel circuits; a gate drive circuit configured to be switched between a first drive mode and a second drive mode, wherein the first drive mode comprises that the gate drive circuit provides gate signals to n rows of the pixel circuits simultaneously, and the second drive mode comprises that the gate drive circuit provides gate signals to m*n rows of the pixel circuits simultaneously, wherein n is a positive integer, and m is an integer greater than or equal to 2.Type: GrantFiled: September 28, 2022Date of Patent: March 5, 2024Assignee: XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD.Inventors: Shimeng Lv, Jingxiong Zhou, Wang Yu, Zuoyang Wu
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Patent number: 11921939Abstract: This information processing system includes: a controller including an operation element to be displaced from an initial position by user's operation, a restoring force imparting section applying a restoring force for returning the displaced operation element to the initial position, a resistance section using a magnetorheological fluid whose viscosity changes with a magnetic-field intensity and which becomes resistance when the operation element is displaced from/to the initial position, and a magnetic field generation section which provides the magnetic field to the magnetorheological fluid; and a circuit capable of controlling the magnetic field generation section. The circuit controls a magnetic-field intensity so that the viscosity of the magnetorheological fluid periodically changes at least between a first viscosity state and a second viscosity state in which the viscosity is lower than in the first viscosity state so that the operation element returns to the initial position by the restoring force.Type: GrantFiled: May 11, 2023Date of Patent: March 5, 2024Assignee: Nintendo Co., Ltd.Inventors: Takafumi Aoki, Takanori Okamura
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Patent number: 11907481Abstract: The invention provides a touch display panel, a method for preparing the same, and a display device. The touch display panel includes a display module and a touch module that are arranged in a stack, the display module including two conductive layers, an intermediate insulation layer arranged between the two conductive layers and a planarization layer, and the touch module including at least two touch electrodes and a touch insulation layer between the at least two touch electrodes, in which the intermediate insulation layer, the touch insulation layer and the planarization layer are all made of an organic material.Type: GrantFiled: May 27, 2022Date of Patent: February 20, 2024Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Qi Yao, Chuanxiang Xu
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Patent number: 11908397Abstract: A light-emitting diode (LED) backlight modulation method based on duty cycle reference point setting is provided, and the LED backlight modulation method is applied to an LED backlight control circuit with row and column scan lines. Different duty cycle reference points are set for the LED string channels in the LED backlight control circuit in row-column scanning mode, whereby the LED string channels can be turned on or off at different time points during a turn-on duration of the row scan line to achieve lighting in the duty cycle, so as to realize the staggered setting of the turn-on time point and turn-off time point of each channel and avoid the need for large current jump at a power drive terminal.Type: GrantFiled: July 31, 2023Date of Patent: February 20, 2024Assignee: X-SIGNAL INTEGRATED CO., LTD.Inventor: Guanou Yang
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Patent number: 11900876Abstract: A display panel, a method for driving the same, and a display apparatus are provided. The display panel includes a plurality of light-emitting elements. Each one of the light-emitting element is electrically connected to M pixel circuits, where M is a positive integer greater than or equal to 2. The M pixel circuits are configured to drive the light-emitting element to emit light respectively during different display phases of the display panel.Type: GrantFiled: June 15, 2022Date of Patent: February 13, 2024Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventor: Yaolin Wang
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Patent number: 11893920Abstract: A display device includes a display panel including pixels in a display area, scan lines disposed in the display area and electrically connected to the pixels, a gate driving circuit disposed in the display area and electrically connected to the scan lines, and clock lines disposed in the display area and electrically connected to the gate driving circuit. The gate driving circuit includes stage blocks adjacent to each other and outputting a scan signal in response to a clock signal provided through a corresponding clock line among the clock lines, and a scan signal output from a stage block among the stage blocks is supplied to scan lines of another stage block among the stage blocks.Type: GrantFiled: June 7, 2022Date of Patent: February 6, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Na Hyeon Cha, Sun Kwun Son, Dong Hee Shin, Chong Chul Chai
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Patent number: 11887532Abstract: Disclosed are a gate driving circuit including a first gate output buffer circuit and a control circuit, and a display device including the same. The control circuit may include a first transistor connected between a first driving voltage node and a QB node, two second transistors connected in series between the QB node and a second low level voltage node, a third transistor connected between a connection node of the two second transistors and the first driving voltage node, a fourth transistor connected between the gate node of the first transistor and the first driving voltage node, and two fifth transistors connected in series between the gate node of the first transistor and the second low level voltage node. A connection node of the two fifth transistors may be electrically connected to the source node or the drain node of the third transistor.Type: GrantFiled: October 26, 2022Date of Patent: January 30, 2024Assignee: LG Display Co., Ltd.Inventor: YongHo Kim
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Patent number: 11880497Abstract: Systems and methods for providing stationary omnidirectional locomotion for virtual reality or other applications. An omnidirectional mobility system (“OMS”) is provided that allows a user thereof to walk or run in all directions as the OMS constrains the user's movement relative to an environment to within a small area. The OMS includes two independent mobile OMS devices that each support one of the user's feet. Each OMS device tracks one of the user's feet during movement and moves responsive to the tracking to remain under the user's feet, thereby providing stationary locomotion. Each of the two OMS devices may include a plurality of tracking sensors, and a plurality of wheels to provide omnidirectional movement. Non-limiting examples of drives/wheels that may be used include Mecanum based systems, omni based systems, swerve drives, etc.Type: GrantFiled: February 6, 2019Date of Patent: January 23, 2024Inventor: Cristian Darius Fluture
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Patent number: 11881161Abstract: Devices and techniques are provided in which an OLED panel is operated in two modes. The first mode operates in a standard way to display an image or video or otherwise illuminate sub-pixels of the panel. In the second mode, some pixels are operated at a lower brightness than in the first mode. The use of multiple modes allows for improved sub-pixel lifetime and reduced sub-pixel and image degradation.Type: GrantFiled: December 17, 2021Date of Patent: January 23, 2024Assignee: Universal Display CorporationInventors: Michael Hack, Chun Lin