Patents Examined by B. Lee
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Patent number: 11830416Abstract: A method of driving a display device, includes: supplying a first sensing data signal corresponding to a first grayscale, first power having a first sensing voltage, and a reference voltage to a pixel during a first sensing period; sensing a first sensing current, generated based on the first sensing voltage, from the pixel during the first sensing period; supplying a second sensing data signal corresponding to a second grayscale and different from the first sensing data signal, the first power having a second sensing voltage, and the reference voltage to the pixel during a second sensing period; sensing a second sensing current, generated based on the second sensing voltage different from the first sensing voltage, from the pixel during the second sensing period; and calculating characteristics of a driving transistor of the pixel using the first sensing current and the second sensing current.Type: GrantFiled: June 12, 2020Date of Patent: November 28, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young Soo Hwang, Hideo Yoshimura
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Patent number: 11830435Abstract: A gate driving circuit includes a plurality of stages that are dependently connected, wherein an n-th one of the stages (n being a natural number) comprises a node controller for controlling voltages of set and reset nodes, a scan signal generator controlled in accordance with the voltages of the set and reset nodes, thereby outputting a scan signal to a scan line of a display panel, and a reference voltage/high-level supply power output unit controlled in accordance with the voltages of the set and reset nodes, thereby outputting a reference voltage or a high-level supply voltage to a reference voltage line of the display panel.Type: GrantFiled: June 16, 2022Date of Patent: November 28, 2023Assignee: LG DISPLAY CO., LTD.Inventor: Dong-Hyun Kim
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Patent number: 11823638Abstract: A display circuit device includes a CPU, a display control circuit, and a drive signal generation circuit. The drive signal generation circuit includes a generation circuit that generates a first CRC value that is a CRC value of command data received from the CPU, and a transmission circuit that transmits the first CRC value to the CPU. The CPU includes an expected value generation circuit that generates a second CRC that is a CRC value of command data before being input to the drive signal generation circuit, a reception circuit that receives the first CRC value, a comparison circuit that compares the first CRC value with the second CRC value, and a control circuit that executes control based on a comparison result obtained by the comparison circuit.Type: GrantFiled: May 18, 2022Date of Patent: November 21, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Yusuke Yoneyama
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Patent number: 11817046Abstract: A display device includes a light-emitting diode including a first conductivity-type semiconductor, an active layer, and a second conductivity-type semiconductor; a first voltage line to which a first voltage is applied; a second voltage line to which a second voltage is applied; a first transistor including a source electrode electrically connected to the first voltage line and a drain electrode electrically connected to a first electrode of the light-emitting diode and to the first conductivity-type semiconductor; a second transistor including a drain electrode electrically connected to a gate electrode of the first transistor and a source electrode electrically connected to a data line to apply a data signal; a capacitor electrically connected to the gate electrode of the first transistor and the first electrode; and a third transistor including a source electrode electrically connected to the second voltage line and a drain electrode electrically connected to the first electrode.Type: GrantFiled: November 23, 2022Date of Patent: November 14, 2023Assignee: Samsung Display Co., Ltd.Inventors: Min Jae Jeong, Kyung Bae Kim, Chong Chul Chai, Kyung Hoon Chung
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Patent number: 11804180Abstract: The present disclosure provides a pixel driving circuit, a method for driving the same, and a display device. A first reset sub-circuit included in the pixel driving circuit is used to control to connect or disconnect a gate electrode of a driving transistor and a common node, and to connect or disconnect the common node and the first initialization voltage input terminals; control to connect or disconnect the common node and a second initialization voltage input terminal under the control of a first control terminal; a difference between a potential of a second initialization signal inputted by the second initialization signal input terminal and a potential of a gate electrode of the driving transistor during a light emission period is smaller than a threshold value.Type: GrantFiled: April 15, 2021Date of Patent: October 31, 2023Assignee: BOE Technology Group Co., Ltd.Inventor: Bo Wang
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Patent number: 11804178Abstract: A display substrate of the present disclosure includes a display region including sub-pixels, data lines, and gate lines; and a circuit region including a first sub-region and a second sub-region opposite to each other at two sides of the display region along a first direction. The first sub-region is provided with a plurality of multiplexing unit groups, each of which includes at least one multiplexing unit. The second sub-region is provided with a plurality of testing unit groups, each of which includes at least one testing unit. The circuit region is further provided with a plurality of driving unit groups, each of which includes at least one driving unit. The driving unit groups and the multiplexing unit groups are alternately arranged along an extending direction of the first sub-region in the first sub-region.Type: GrantFiled: September 21, 2020Date of Patent: October 31, 2023Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Lili Du, Hongjun Zhou, Wen Tan, Cong Liu
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Patent number: 11803234Abstract: Systems, devices, media, and methods are presented for an immersive augmented reality (AR) experience using an eyewear device. A portable eyewear device includes a processor, a memory, and a display projected onto at least one lens assembly. The memory has programming stored therein that, when executed by the processor, captures information depicting an environment surrounding the device and identifies a match between objects in that information and predetermined objects in previously obtained information for the same environment. When the position of the eyewear device reaches a preselected location with respect to the matched objects, a physical output is provided to produce the immersive experience. The physical output changes as the position of the eyewear device moves to maintain the immersive experience.Type: GrantFiled: November 16, 2022Date of Patent: October 31, 2023Assignee: Snap Inc.Inventors: Ilteris Canberk, Shin Hwun Kang, Doug Mead
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Patent number: 11798497Abstract: A gate driving circuit includes a Q node controller generating a voltage of a Q node by using a first clock, a second clock, a third clock, and a start signal; a QB node controller generating a voltage of a QB node by using the second clock and the third clock; and an output part including a pull-up TFT and a pull-down TFT and generating an output signal including a first pulse interval, of a gate-on voltage, synchronized with a part of the first clock according to the voltages of the Q node and the QB node.Type: GrantFiled: August 2, 2022Date of Patent: October 24, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Sanghyun Lim, Nakwoo Kim, Donghyang Lee
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Patent number: 11789525Abstract: A multi-modal interactive apparatus provides for output and input using a plurality of modalities. A display presents image output and speakers provide audio output. A sensor module includes sensors such as a microphone array, camera, radar, ambient light sensor, and so forth. Based on how the apparatus is mounted to a supporting structure, in one implementation the overall orientation of the apparatus may be arranged to provide a desired field-of-view (FOV) to the sensors. For example, based on mounting height, the orientation places the sensor module on a top or bottom of the mounted device. Within the sensor module, one or more sensors may be mounted with a pitch angle that directs the FOV to encompass users during typical operation. In another implementation, the sensor module may be repositioned with respect to the apparatus to provide the desired FOV, such as moved from top to bottom.Type: GrantFiled: June 28, 2022Date of Patent: October 17, 2023Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Michael Christopher Kouxommone, Ravi Yatnalkar, Kei Yamamoto, Scott Patrick Campbell, Sourabh Pawar, Om Prakash Gangwal
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Patent number: 11790846Abstract: A driving method of a display panel includes: determining a brightness band of the display panel, wherein brightness bands include a first brightness band to an Nth brightness band, maximum grayscale brightness of the first brightness band to the Nth brightness band decreases sequentially, and each brightness band includes three Gamma correction curves respectively corresponding to a first light emitting unit, a second light emitting unit, and a third light emitting unit each of an (N?M)th brightness band to the Nth brightness band also corresponds to at least one duty ratio; determining an input data voltage corresponding to at least one light emitting unit based on a Gamma correction curve that corresponds to the determined brightness band and an image to be displayed; and driving the display panel to display the image based on the determined input data voltage, or the determined input data voltage and the duty ratio.Type: GrantFiled: June 10, 2021Date of Patent: October 17, 2023Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Wenqiang Zhang, Rongjian Yan, Wenbin Chen
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Patent number: 11783784Abstract: A display device, a driving circuit and a driving method with an improved image quality in a sensing process for a characteristic value. In addition, aspects of the present disclosure relate a display device, a driving circuit and a driving method capable of diminishing luminance non-uniformity occurring in a sensing process by sensing a characteristic value for each signal line with the same luminance.Type: GrantFiled: October 29, 2021Date of Patent: October 10, 2023Assignee: LG DISPLAY CO., LTD.Inventor: HyunHaeng Lee
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Patent number: 11776487Abstract: A first capacitance element provided corresponding to a bit D0, a second capacitance element provided corresponding to a bit D1, and a third capacitance element and a fourth capacitance element provided corresponding to a bit D2, and electrically coupled in parallel are included. An area S1 where electrodes of the first capacitance element overlap in plan view is smaller than half an area S2 where electrodes of the second capacitance element overlap in plan view, an area in which electrodes of the third capacitance element overlap in plan view is substantially the same as the area S2, and an area where electrodes of the fourth capacitance element overlap in plan view is substantially the same as the area S2.Type: GrantFiled: November 4, 2022Date of Patent: October 3, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Hitoshi Ota
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Patent number: 11776486Abstract: A first capacitance element provided corresponding to a bit D0, a second capacitance element provided corresponding to a bit D1, and a third capacitance element and a fourth capacitance element provided corresponding to a bit D2, and electrically coupled in parallel are included. An area S1 where electrodes of the first capacitance element overlap in plan view is smaller than half an area S2 where electrodes of the second capacitance element overlap in plan view, an area in which electrodes of the third capacitance element overlap in plan view is substantially the same as the area S2, and an area where electrodes of the fourth capacitance element overlap in plan view is substantially the same as the area S2.Type: GrantFiled: June 23, 2022Date of Patent: October 3, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Hitoshi Ota
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Patent number: 11763743Abstract: A pixel circuit includes a current control sub-circuit, a combined light emitting sub-circuit, and a first light emitting element to an Nth light emitting element, N being a natural number greater than 1. The current control sub-circuit is configured to receive a display data signal and a light emitting control signal, control whether to generate a driving current according to the light emitting control signal, and control a current intensity of the generated driving current according to the display data signal. The combined light emitting sub-circuit is configured to receive the driving current and a first light emitting data signal to an Nth light emitting data signal and drive one or more of the first light emitting element to the Nth light emitting element to emit light according to the first light emitting data signal to the Nth light emitting data signal.Type: GrantFiled: January 13, 2021Date of Patent: September 19, 2023Assignee: BOE Technology Group Co., Ltd.Inventors: Liang Chen, Dongni Liu, Li Xiao, Minghua Xuan, Haoliang Zheng, Zhenyu Zhang, Hao Chen, Jiao Zhao, Qi Qi
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Patent number: 11763757Abstract: The pixel circuit includes a data-writing module, a drive module, a storage module, a first light emission control module, a second light emission control module, a light-emitting module and a first initialization module. A first terminal of the first initialization module is electrically connected to a second light emission control signal input terminal, a second terminal of the first initialization module is electrically connected to a control terminal of the drive module; or the pixel circuit includes an initialization voltage input terminal, the first terminal of the first initialization module is electrically connected to the initialization voltage input terminal, the second terminal of the first initialization module is electrically connected to the control terminal of the drive module. The first initialization module is configured to initialize the control terminal of the drive module under a control of a control signal input into a control terminal of the first initialization module.Type: GrantFiled: January 11, 2022Date of Patent: September 19, 2023Assignee: YUNGU (GU'AN) TECHNOLOGY CO., LTD.Inventors: Dongfang Zhao, Ling Wang, Zhe Du, Junfeng Li, Gang Wang, Yong Ge
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Patent number: 11763717Abstract: The present invention provides a drive-control method and control apparatus of display screens, and a display screen thereof, the method includes: determining a staged target gray-scale value of all sub-pixels in the currently scanned row, based on a current gray-scale value of each sub-pixel, the staged target gray-scale value and a pre-stored look-up table, determining the charging-discharging target count corresponding to each column channel in the current scan row, terminating the charging-discharging of the column channel, when the count of the counter is consistent with the target count corresponding to the charging or discharging of each column channel. The present invention in implementation not only has simple structure and a small scale circuit, but also low power consumption.Type: GrantFiled: March 2, 2022Date of Patent: September 19, 2023Assignee: SUZHOU JIAOTU ELECTRONICS CO. LTD.Inventor: Qingqing Xie
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Patent number: 11756472Abstract: A driving controller includes an image analyzer, a grayscale setter and a time-and-space arranger. The image analyzer analyzes input image data to determine a peak luminance. The grayscale setter receives a gamma value and the peak luminance and to determine a boundary grayscale value and a minimum grayscale value. The time-and-space arranger is configured to temporally and spatially arrange first data having the boundary gray scale value and second data having the minimum grayscale value. The driving controller is configured to drive a display panel using the first data and the second data for a low grayscale range of which a grayscale is equal to or less than the boundary grayscale value and to drive the display panel based on a data signal corresponding to a grayscale value of the input image data for a normal grayscale range of which a grayscale is greater than the boundary grayscale value.Type: GrantFiled: September 26, 2022Date of Patent: September 12, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kihyun Pyun, Heesook Park
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Patent number: 11756489Abstract: A display device includes a sensor, a timing controller, and a data driver. The sensor senses characteristic values of an element included in a pixel of the display device using input initialization and data voltages in a sensing period of one frame period. The timing controller calculates compensation data voltage using the characteristic values, and calculate adjusted initialization and data voltages in the sensing period by using the compensation data voltage. The data driver output the adjusted initialization and data voltages to the pixel during the sensing period in response to a control signal output from the timing controller.Type: GrantFiled: December 30, 2021Date of Patent: September 12, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ki Hyun Pyun, Jung Eon An
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Patent number: 11749211Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.Type: GrantFiled: September 26, 2022Date of Patent: September 5, 2023Assignee: Samsung Display Co., Ltd.Inventors: Sehyuk Park, Hyojin Lee, Hui Nam, Jinyoung Roh, Bong Hyun You, Eunho Lee
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Patent number: 11749214Abstract: A display device is provided and includes display panel comprising plurality of pixels; and light source device configured to emit light that illuminates display panel, wherein display panel is configured to control operation of light source device, display panel does not lower luminance of light for second predetermined time or longer after display panel has raised luminance of light by predetermined amount of luminance change or more within first predetermined time, and when image changes from first image other than raster image and ramp image to second image that is either of raster image and ramp image, display panel lowers luminance of light within time shorter than second predetermined time even after luminance of light has been raised by predetermined amount of luminance change or more within first predetermined time.Type: GrantFiled: March 22, 2021Date of Patent: September 5, 2023Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Tsutomu Harada, Naoyuki Takasaki, Toshiyuki Nagatsuma