Specific Display Element Control Means (e.g., Latches, Memories, Logic) Patents (Class 345/98)
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Patent number: 12266321Abstract: A cholesteric liquid crystal (ChLC) display and driving method thereof are provided. The ChLC display has a driving circuit for providing voltage on a scan line and a data line so as to drive a pixel. The driving circuit provides a first voltage and a second voltage to the data and the scan lines during a first time period, a third voltage to the data line and/or a fourth voltage to the scan line during a second time period, a fifth voltage and a sixth voltage to the data and the scan lines during a third time period. The first and sixth voltages are high levels, the second and fifth voltages are low levels, the levels of the third and fourth voltages are between the high and low levels.Type: GrantFiled: July 11, 2023Date of Patent: April 1, 2025Assignee: IRIS OPTRONICS CO., LTD.Inventors: Chia-Che Wu, Wu-Chang Yang, Chi-Chang Liao
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Patent number: 12267563Abstract: A display device includes a receiver that receives at least video data and genre information, an acquirer that acquires image quality information corresponding to the genre information, a genre detector that detects a change in the genre information, and a controller that performs, when a change in the genre information is detected, control such that image quality of the video data is set based on image quality information corresponding to the changed genre information when a predetermined period of time has elapsed after a time point when the genre information is changed.Type: GrantFiled: May 25, 2023Date of Patent: April 1, 2025Assignee: SHARP KABUSHIKI KAISHAInventor: Yuichi Yoshida
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Patent number: 12254845Abstract: There is provided a portable electronic device including a backlight module, an ambient light sensor, a proximity sensor and a processing unit. The backlight module illuminates with backlight brightness. The ambient light sensor is configured to detect ambient light intensity. The proximity sensor is configured to detect an object. The processing unit is configured to activate the proximity sensor when the ambient light intensity detected by the ambient light sensor is lower than a predetermined value or decreases more than a predetermined range, and to maintain or reduce the backlight brightness according to a detection result of the proximity sensor. There is further provided an automatic detection method.Type: GrantFiled: June 13, 2023Date of Patent: March 18, 2025Inventors: En-Feng Hsu, Meng-Huan Hsieh
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Patent number: 12254840Abstract: A DA converter circuit includes an upper DA converter circuit that includes a first capacitance element including one end coupled to a data line and that outputs a voltage corresponding to five high-order bits to the data line, a lower DA converter circuit that includes a second capacitance element including one end coupled to a relay line and that outputs a voltage corresponding to five low-order bits to the relay line, and a capacitor including one end coupled to the relay line and the other end coupled to the data line. In the first capacitance element, an insulating layer is sandwiched between a first electrode and a second electrode. In the second capacitance element, an insulating layer is sandwiched between a third electrode and a fourth electrode. The insulating layer of the first capacitance element is thicker than the insulating layer of the second capacitance element.Type: GrantFiled: February 29, 2024Date of Patent: March 18, 2025Assignee: SEIKO EPSON CORPORATIONInventor: Hitoshi Ota
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Patent number: 12242673Abstract: An information handling system keyboard illuminates key values in each of plural keycaps with a backlight located below the plural keys and directed upward through the plural keys and having illumination that adjusts color temperature under management of a controller. A light sensor detects ambient light color temperature and communicates the ambient light color temperature to the controller, which executes instructions in non-transitory memory to adjust the backlight color illumination based on the detected ambient light color temperature to increase color contrast of backlight illumination relative to ambient light and thereby better highlight the key values on the keycap upper surfaces.Type: GrantFiled: August 31, 2023Date of Patent: March 4, 2025Assignee: Dell Products L.P.Inventors: Wen-Pin Huang, Yao-Hsien Huang, Hsien-Tsan Chang, Yi-Chen Wang, Po-Chun Hou
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Patent number: 12243470Abstract: The present invention discloses a light-emitting diode (LED) display driver chip and use thereof, which relates to the cross technical field of an integrated circuit and LED display. Based on an existing chip architecture with dual-latch and PWM, the present invention proposes to apply a modulation method of mixing pulse amplitude modulation (PAM) and pulse width modulation (PWM) to a driver chip architecture, to replace an existing PWM control mode, so as to obtain better uniformity of the image grayscale in a small current mode; and use a DAC small current precision control circuit to obtain a more precise current output, to meet the application performance requirements of ultra-high-density LED display, which can process data to achieve a better driving effect, and meet the application performance requirements of ultra-high-density LED display.Type: GrantFiled: April 21, 2022Date of Patent: March 4, 2025Assignee: PURESEMI Co., Ltd.Inventors: Zhaoyu Jiang, Ruoping Zhang, Mao Zhao, Junjie Chen
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Patent number: 12236825Abstract: A redundant pixel layout for a display comprises a display substrate and an array of pixels disposed on or over the display substrate. Each pixel comprises a first subpixel and a redundant second subpixel. The first subpixel includes a first subpixel controller electrically connected to controller wires and a first light emitter electrically connected to a first-light-emitter wire. The first light emitter is controlled by the first subpixel controller through the first-light-emitter wire. The second subpixel includes a second-subpixel-controller location connected to the controller wires and a second-light-emitter location comprising a second-light-emitter wire. The first light emitter is adjacent to the second-light-emitter location and the first light emitter and the second-light-emitter location are closer together than are any two pixels in the array of pixels.Type: GrantFiled: August 13, 2018Date of Patent: February 25, 2025Assignee: X Display Company Technology LimitedInventors: Ronald S. Cok, Erich Radauscher, Erik Paul Vick, Andrew Tyler Pearson, Christopher Andrew Bower, Matthew Alexander Meitl
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Patent number: 12236836Abstract: A display device includes: a pixel unit including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines; a multi-frequency driver configured to compare image data between adjacent frames to determine a first area of the pixel unit driven at a first refresh rate and a second area of the pixel unit driven at a second refresh rate lower than the first refresh rate; a scan driver configured to sequentially supply scan signals to the scan lines in a first direction, to supply first scan signals of the scan signals to the first area at the first refresh rate, and to supply second scan signals of the scan signals to the second area at the second refresh rate; and a data driver configured to supply a data signal corresponding to the image data to the data lines.Type: GrantFiled: April 21, 2020Date of Patent: February 25, 2025Assignee: Samsung Display Co., Ltd.Inventors: Hae Kwan Seo, Jun Heyung Jung
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Patent number: 12236900Abstract: A display device can include a data driving circuit including k sensing terminals and a switching part including a switching element positioned between an outermost sensing terminal among the k sensing terminals and a constant voltage supply terminal, wherein k is a positive integer greater than or equal to 2; and a display panel including a plurality of subpixels and a plurality of sensing lines electrically connected with the plurality of subpixels, wherein the plurality of sensing lines are electrically connected with n sensing terminals among the k sensing terminals disposed in the data driving circuit, where n is a positive integer less than or equal to k and n is greater than or equal to 1.Type: GrantFiled: July 6, 2022Date of Patent: February 25, 2025Assignee: LG DISPLAY CO., LTD.Inventor: MooKyoung Hong
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Patent number: 12230183Abstract: A display device includes a display panel including pixels arranged along a plurality of pixel lines, each pixel line extending in a first direction, a data driver which applies data voltages to the pixels, and a timing controller which controls the data driver. The data driver includes first channels which applies the data voltages to the pixels of first pixel lines and is adjacent to the display panel in the first direction, and second channels which applies the data voltages to the pixels of second pixel lines and is adjacent to the display panel in a direction opposite to the first direction.Type: GrantFiled: September 20, 2023Date of Patent: February 18, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seongjoo Lee, Joon-Chul Goh
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Patent number: 12217714Abstract: Disclosed in some embodiments are an image display method and system, a display device, a head-mounted display device, and a medium. The method includes: comparing grayscale values of pixel points of a current image with grayscale values of pixel points of a preset grayscale image to obtain first comparison results, and comparing grayscale values of pixel points of the next frame of image of the current image with the grayscale values of the pixel points of the preset grayscale image to obtain second comparison results; comparing the first comparison result and the second comparison result corresponding to the pixel points at the same position to obtain a pixel point needing to be adjusted; and when the display of the current image is completed, flipping a liquid crystal at the pixel point needing to be adjusted, such that the pixel point needing to be adjusted reaches a target grayscale value.Type: GrantFiled: December 15, 2021Date of Patent: February 4, 2025Assignee: GOERTEK INC.Inventor: Meng Dong
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Patent number: 12206025Abstract: A display device including a pixel having a memory. The pixel includes at least a display element, a capacitor, an inverter, and a switch. The switch is controlled with a signal held in the capacitor and a signal output from the inverter so that voltage is supplied to the display element. The inverter and the switch can be constituted by transistors with the same polarity. A semiconductor layer included in the pixel may be formed using a light-transmitting material. Moreover, a gate electrode, a drain electrode, and a capacitor electrode may be formed using a light-transmitting conductive layer. The pixel is formed using a light-transmitting material in such a manner, whereby the display device can be a transmissive display device while including a pixel having a memory.Type: GrantFiled: February 21, 2024Date of Patent: January 21, 2025Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Kengo Akimoto, Masashi Tsubuku, Toshinari Sasaki
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Patent number: 12204709Abstract: The present application provides a display panel and a display device. The display panel includes a plurality of data lines and a first demultiplexer. In the first demultiplexer, each first channel wire is connected to at least two data lines. Each first control unit includes a plurality of first switching elements. At least one data line is connected to the first channel wire through M first switching elements connected in parallel, and M?2. The display panel includes a display area, and the first control unit is arranged in the display area.Type: GrantFiled: November 4, 2022Date of Patent: January 21, 2025Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Liwang Liu, Weihong Yin, Chao Wang
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Patent number: 12205548Abstract: Provided are a display control device, a display device, and a display control method that enable light-emitting elements to emit light in units of a plurality of rows.Type: GrantFiled: January 31, 2022Date of Patent: January 21, 2025Assignee: SONY GROUP CORPORATIONInventor: Kei Kimura
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Patent number: 12198583Abstract: A driver circuit is coupled to a control circuit which is configured to control a plurality of pixels. The driver circuit includes a detector circuit and an outputting circuit. The detector circuit is configured to detect whether an error occurs or not. The outputting circuit is configured to output an enable signal to the control circuit. When the error occurs, the enable signal changes from a first level to a second level such that the control circuit stops outputting a plurality of control signals to the plurality of pixels.Type: GrantFiled: July 11, 2023Date of Patent: January 14, 2025Assignee: NOVATEK Microelectronics Corp.Inventors: Ching-Wu Tseng, Wei-Lun Shih
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Patent number: 12198653Abstract: A display device according to one embodiment includes a data drive unit that converts image data into a data signal and outputs the data signal, a multiplexer unit that time-divides the data signal output from the data drive unit and outputs the time-divided data signals, and a gate drive unit that outputs a gate signal synchronized with the data signal to a first gate line, a second gate line, a third gate line, and a fourth gate line, wherein the multiplexer unit includes a first multiplexer and a second multiplexer, when the gate signal is sequentially input to the first gate line and the second gate line, the first multiplexer and the second multiplexer are sequentially turned on, and when the gate signal is sequentially input to the third gate line and the fourth gate line, the second multiplexer and the first multiplexer are sequentially turned on.Type: GrantFiled: December 8, 2021Date of Patent: January 14, 2025Assignee: LX SEMICON CO., LTD.Inventor: Hun Yong Lim
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Patent number: 12183229Abstract: A display device according to the invention includes: a display panel and a driving chip mounted on the display panel. The display panel includes: a base layer, pixels, signal lines, fan-out lines, and a selection circuit. The base layer includes a first region, a second region bent with respect to a bending axis, and a third region adjacent to the second region. The pixels are arranged in the first region, and the signal lines are arranged in the first region and connected to the pixels. The fan-out lines are arranged in the second region and connected to the signal lines. The selection circuit is arranged between the fan-out lines and the driving chip in the third region and connected to the fan-out lines and the driving chip.Type: GrantFiled: August 30, 2023Date of Patent: December 31, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jaewoo Lee, Tae-Ho Kim, Seung-Jun Lee, Yongsu Lee, Seung-Hwan Cho
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Patent number: 12175914Abstract: Provided is a display device including a display panel configured to include a plurality of pixels positioned on a first substrate and a plurality of scan lines positioned along a first direction; and a plurality of shift registers configured to receive a plurality of clock signals and a start signal, to generate a plurality of scan signals, and to transfer the scan signals to the scan lines, wherein a first shift register among the shift registers is positioned on a second substrate, and is connected to an adjacent second shift register positioned on the first substrate among the shift registers and a corresponding scan line through a contact hole formed in the second substrate.Type: GrantFiled: April 25, 2023Date of Patent: December 24, 2024Assignee: Samsung Display Co., Ltd.Inventors: Joon Woo Bae, Dong Min Lee
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Patent number: 12175948Abstract: A data driving circuit and a display device are provided in the present application. In the present application, a comparison module of a charge sharing unit module is connected to a latch module for comparing a digital video data stored in a corresponding pair of data driving units, a switching transistor is connected output terminals of the corresponding pair of the data driving units, an output terminal of the comparison module is connected to an control terminal of the switching transistor for turning on the switching transistor while a grayscale value of the digital video data being greater than a default grayscale value, so that the output terminals of the corresponding pair of the data driving units are connected for charge sharing.Type: GrantFiled: October 25, 2021Date of Patent: December 24, 2024Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Fangyun Liu
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Patent number: 12165565Abstract: A display device includes a display panel including data lines, line capacitors respectively connected to the data lines, and pixels receiving a data voltage from the data lines, and a data driver supplying the data voltage to the pixels through the data lines and supplying different charging voltages respectively to the line capacitors through the data line. The data driver senses voltage change of at least one of the data lines occurring in case that at least one of the line capacitors is charged or discharged.Type: GrantFiled: September 2, 2022Date of Patent: December 10, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Tae Gon Im, Jong Jae Lee, Soo Yeon Kim, Jun Pyo Lee
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Patent number: 12167647Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate, the base substrate includes a display region and a periphery region; a plurality of data signal transmission lines, a plurality of signal output pads, a plurality of signal input pads, and a plurality of test pads are located in the periphery region; a plurality of sub-pixels and a plurality of data lines are located in the display region; the plurality of data signal transmission lines are electrically connected with at least part of the plurality of data lines; the periphery region is provided with a plurality of electrostatic release elements located between the plurality of signal output pads and the plurality of test pads, each electrostatic release element is electrically connected with one data signal transmission line and is configured to release static electricity on the data signal transmission line.Type: GrantFiled: November 29, 2019Date of Patent: December 10, 2024Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Bo Zhang, Hongwei Ma, Xiangdan Dong, Bo Cheng, Rong Wang
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Patent number: 12154909Abstract: A display device that is suitable for increasing its size is provided.Type: GrantFiled: August 2, 2023Date of Patent: November 26, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Kei Takahashi, Yoshiyuki Kurokawa
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Patent number: 12154470Abstract: A gate driving circuit and a display panel are disclosed. A pull-up control module and a pull-down module of each stage gate driving unit are connected to a first node. A thin film transistor in the pull-up control module and/or pull-down module that is connected to the first node is an oxide thin film transistor, such that a leakage current of the first node is reduced due to the advantage of the small off-state leakage current of the oxide thin film transistor. Therefore, the voltage level of the first node can remain stable during a pull-up stage and a touch suspension stage.Type: GrantFiled: October 29, 2021Date of Patent: November 26, 2024Inventors: Haiming Cao, Yanqing Guan, Chao Tian, Fei Ai, Guanghui Liu, Zhifu Li
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Patent number: 12148345Abstract: A overvoltage compensation method for a display panel includes determining a corresponding compensation voltage value according to grayscale values of two adjacent pixels in a same column in a same frame or grayscale values of a same pixel in two adjacent frames, and an overvoltage compensation table, wherein the overvoltage compensation table has a first grayscale value group and a second grayscale value group that both contain all integers in [0,2k), the integers include a plurality of binding point values, and a difference between two adjacent binding point values of the first four binding point values is not greater than 2k?8, wherein k is an integer greater than 8; transmitting the compensation voltage value to the display panel to make the pixel present the second grayscale value.Type: GrantFiled: December 31, 2020Date of Patent: November 19, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Qian Wang
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Patent number: 12147621Abstract: A conductive film includes a substrate and a first metal nanowire layer. The first metal nanowire layer is disposed on a first surface of the substrate. The first metal nanowire layer has an anisotropy value larger than or equal to 2.8 and smaller than or equal to 4.0.Type: GrantFiled: May 18, 2023Date of Patent: November 19, 2024Assignee: TPK Advanced Solutions Inc.Inventors: Kang Yu Liu, Wei Jie Huang, You Yi Ji, Xiao Ping Guo
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Patent number: 12148402Abstract: A panel drive circuit having an input interface to which an image signal is input, a gamma correction circuit that corrects an image processing signal generated by an image processing circuit performing image processing on the image signal input to the input interface, such that a gamma correction signal thus generated has predetermined gamma characteristics, an unevenness correction circuit that corrects the gamma correction signal generated through the correction by the gamma correction circuit, based on correction data for reducing unevenness of a display panel, and an D/A convertor that has a variable output voltage range, and performs D/A conversion on an unevenness correction signal generated through the correction by the unevenness correction circuit and outputs the signal thus generated to the display panel, and the unevenness correction circuit changes the correction method according to the output voltage range of the D/A convertor.Type: GrantFiled: March 10, 2021Date of Patent: November 19, 2024Assignee: IIX INC.Inventors: Makoto Hatakenaka, Takashi Sakamoto, Mitsuo Hagiwara, Norimasa Senda, Yoshihide Minegishi, Hiroshi Murase
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Patent number: 12142245Abstract: A control system includes a plurality of driving circuits coupled in series, which include a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a first flag signal selector. The first transmitter is coupled to the first receiver, and the first flag signal selector is coupled between the first receiver and the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver, a second transmitter and a second flag signal selector. The second transmitter is coupled to the second receiver, and the second flag signal selector is coupled between the second receiver and the second transmitter.Type: GrantFiled: September 14, 2022Date of Patent: November 12, 2024Assignee: NOVATEK Microelectronics Corp.Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Yong-Ren Fang, Yi-Chuan Liu, Yi-Yang Tsai, Po-Hsiang Fang
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Patent number: 12131678Abstract: A touch control circuit for use in a display device includes: a plurality of analog-to-digital converters and a controller. Each of the analog-to-digital converters is coupled to at least one of a plurality of touch sensing electrodes and at least one of a plurality of source drivers of the display device. At least one of the analog-to-digital converters is configured to generate a first measured digital code according to an output voltage outputted by at the least one of the source drivers. The controller is coupled to the analog-to-digital converters, and configured to compare the first measured digital code with an input digital code that the output voltage of the at the least one of the source drivers corresponds to, thereby to generate a first safety detection result regarding the at least one of the source drivers.Type: GrantFiled: December 29, 2023Date of Patent: October 29, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Yaw-Guang Chang, Chun-Yu Chiu, Ren-Yuan Huang, Chia-Yi Huang
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Patent number: 12125454Abstract: In the display panel, a display region includes a plurality of sub-pixels arranged in an array, and a non-display region includes a plurality of demultiplexers, a plurality of signal source lines and M timing control lines. Each of the plurality of demultiplexers includes N gating switches, where in the same demultiplexer, input terminals of a plurality of gating switches are electrically connected to the same signal source line, an output terminal of each of the plurality of gating switches is electrically connected to one column of sub-pixels, and control terminals of the plurality of gating switches are electrically connected to different timing control lines. data signals transmitted by at least two signal source lines electrically connected to at least two gating switches controlled by a timing control line have opposite voltage polarities.Type: GrantFiled: October 11, 2023Date of Patent: October 22, 2024Assignee: Xiamen Tianma Microelectronics Co., Ltd.Inventors: Hao Wu, Yiqiang Lin
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Patent number: 12118917Abstract: A driving system and a display panel are provided. The driving system includes a timing controller and a driving chip. The driving chip receives the video signal and processes the video signal to output a characteristic current or a regular current to the display panel. The driving chip outputs the characteristic current to the display panel when the driving chip receives the characteristic video signal and to output the regular current to the display panel when the driving chip receives the regular video signal, and the characteristic current is smaller than regular current. The driving system of the display panel according to the present disclosure could alleviate the capacitor coupling effect caused by the large voltage jump introduced by the huge gray value difference when the display panel in a frame transition and thus improve the horizontal crosstalk of the display panel.Type: GrantFiled: July 26, 2021Date of Patent: October 15, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Wenfang Li
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Patent number: 12118919Abstract: A standalone light-emitting element display tile, such as for instance a light-emitting diode display tile and method is disclosed. The standalone light-emitting element display tile can be a lighting fixture, an image display device, and/or a video display device. The standalone light-emitting element display tile includes a portable board having any arrangement of light-emitting elements thereon, a control module, and a power module. In one embodiment, the standalone light-emitting element display tile is a fully autonomous and independent light-emitting element display tile that features wireless communications and battery power, wherein there are no signal cables or power cables connected to the standalone light-emitting element display tile. Further, a method of using the presently disclosed standalone light-emitting element display tile is provided.Type: GrantFiled: May 8, 2019Date of Patent: October 15, 2024Assignee: Stereyo BVInventors: Robbie Thielemans, Vince Dundee
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Patent number: 12113888Abstract: A frame synchronization system (1) according to this invention includes a frame signal generation circuit (20) configured to generate a frame signal including a plurality of first frame signals each including a first frame synchronization signal and a first payload signal, wherein the first frame synchronization signal is formed from at least one symbol and is set with an average amplitude lower than an average amplitude of the first payload signal, and a frame synchronization circuit (60) configured to receive the frame signal via an optical transmission path (70), and detect the first frame synchronization signal from a received signal, wherein the received signal is divided into frames having a symbol length of the first frame signal, coordinate values, on an IQ plane, of the signals at identical symbol positions of the plurality of divided frames are added over the plurality of frames, and a symbol specified by magnitude comparison in the frame based on an addition result is determined as the first frameType: GrantFiled: April 12, 2021Date of Patent: October 8, 2024Assignee: NTT ELECTRONICS CORPORATIONInventors: Yasuyuki Endoh, Masaaki Iizuka
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Patent number: 12113160Abstract: According to an aspect of the present disclosure, the display device includes a lower substrate and a plurality of pixel substrates disposed on the lower substrate. The display device also includes a plurality of transistors disposed on the plurality of pixel substrates and a planarization layer disposed on the plurality of pixel substrates to cover upper portions of the plurality of transistors. The display device further includes a plurality of individual connection pads and a common connection pad disposed on the planarization layer. The display device also includes a plurality of light emitting diodes disposed on the plurality of individual connection pads and the common connection pad. At least one of the plurality of individual connection pads and the common connection pad may have a multilayer structure.Type: GrantFiled: November 16, 2021Date of Patent: October 8, 2024Assignee: LG Display Co., Ltd.Inventors: JunHyuk Song, Hyokang Lee, Hyowon Kwon, MoonBae Gee, KiHan Kim
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Patent number: 12106728Abstract: A display substrate and a display panel are provided, the display substrate includes a first gate driver circuit and a second gate driver circuit that are respectively arranged on a first side and a second side of a display region; the first gate driver circuit includes a plurality of first shift register units arranged in a first direction, each first shift register unit includes a first thin film transistor; the second gate driver circuit includes a plurality of second shift register units arranged in the first direction, each second shift register unit includes a second thin film transistor having the same function as the first thin film transistor; an average turn-on current of at least one first thin film transistor is Ion1, and an average turn-on current of at least one second thin film transistor is Ion2, Ion1>Ion2.Type: GrantFiled: August 31, 2021Date of Patent: October 1, 2024Assignee: BOE Technology Group Co., Ltd.Inventors: Lizhong Wang, Guangcai Yuan, Ce Ning, Hehe Hu, Nianqi Yao, Xin Xie, Yifang Huang, Liping Lei, Chen Xu
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Patent number: 12099681Abstract: A timing controller according to one aspect of the present disclosure that is capable of operating in a low-power mode for a touch sensor driving period includes a receiver which receives a timing synchronization signal and video image data from an external source, a data processor which generates a gate control signal and a data control signal on the basis of the timing synchronization signal and arranges the video image data as pixel data for a display panel, and a transmitter which operates in a normal mode to output the pixel data, the gate control signal, and the data control signal for a display driving period and operates in a low-power mode for at least some time of a touch sensor driving period.Type: GrantFiled: June 13, 2023Date of Patent: September 24, 2024Assignee: LX Semicon Co., Ltd.Inventors: Young Hoon Bin, Jae Woo Jeon
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Patent number: 12100339Abstract: A method of scanning a display panel having a plurality of rows of pixels includes steps of: generating a first accumulated number; calculating a first scan number according to the first accumulated number; scanning a present row of pixels having the first scan number among the plurality of rows of pixels; accumulating the first accumulated number to generate a second accumulated number; calculating a second scan number according to the second accumulated number; and scanning a next row of pixels having the second scan number among the plurality of rows of pixels after scanning the present row of pixels. Wherein, the plurality of rows of pixels are scanned in a scan order different from a numbering order of the plurality of rows of pixels.Type: GrantFiled: May 11, 2023Date of Patent: September 24, 2024Assignee: NOVATEK Microelectronics Corp.Inventors: Yi-Yang Tsai, Po-Hsiang Fang, Jhih-Siou Cheng
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Patent number: 12094385Abstract: The present disclosure relates to display devices, and more specifically, to a display device with a sensor circuit capable of sensing the presence or absence of an abnormality in a signal line located in a bending area. Through these, a display device is provided that enables an accurate check to be performed for the presence or absence of an abnormality, such as a crack, or the like in signal lines located in the bending area, and thus, has a normal bending structure without defects.Type: GrantFiled: July 13, 2023Date of Patent: September 17, 2024Assignee: LG Display Co., Ltd.Inventors: Jaehyun You, JooHwan Kim, DongGeun Bae
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Patent number: 12094392Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.Type: GrantFiled: September 11, 2023Date of Patent: September 17, 2024Assignee: Samsung Display Co., Ltd.Inventors: Sang Su Han, Kyun Ho Kim, Seong Jun Kim, Jung Taek Kim, Hyung Keun Park, Joon Suk Baik, Se Keun Lee
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Patent number: 12073771Abstract: A display panel and a driving method thereof, and a display device. The display panel includes a substrate and a plurality of pixel circuits arranged in an array on the substrate, each of the plurality of pixel circuits includes a pixel driving chip and at least one light-emitting element electrically connected to the pixel driving chip, and the pixel driving chip is configured to receive and store a data signal and drive the at least one light-emitting element to emit light according to the data signal.Type: GrantFiled: September 18, 2020Date of Patent: August 27, 2024Assignees: BOE MLED Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Guofeng Hu, Qibing Gu, Lingyun Shi, Ming Chen, Xiurong Wang, Wei Hao, Tao Yang, Hong Liu, Mingjian Yu, Donghui Wang, Jing Xue, Yong Zhang, Jian Wang, Jian Lin, Xianglei Qin, Zhichao Yang, Zepeng Sun, Honggui Jin, Yashuai An, Zhilong Duan, Lingfang Nie, Liangzhen Tang, Limin Zhang
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Patent number: 12051354Abstract: A driving method and a display device are disclosed. The driving method drives the display panel according to a common voltage look-up table, and the common voltage look-up table is generated by a method including: driving a preset area for display with a preset area gray-scale value; shooting the preset area and obtaining a brightness and a flicker value corresponding to the preset area; adjusting the common voltage value multiple times, and recording the common voltage value when the corresponding flicker value is the minimum as the optimal common voltage value; adjusting the preset area gray-scale value multiple times, and recording a plurality of optimal common voltage values corresponding to the adjusted preset area gray-scale values; and generating the common voltage look-up table according to the multiple preset area gray-scale values and the corresponding optimal common voltage values.Type: GrantFiled: September 4, 2023Date of Patent: July 30, 2024Assignee: HKC CORPORATION LIMITEDInventors: Mingliang Wang, Haoxuan Zheng
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Patent number: 12039913Abstract: A pixel circuit includes a current control circuit, a time control circuit, and a light-emitting component, which are electrically coupled to one another in series along a common passage path of a driving current. The current control circuit is configured to control an intensity of the driving current according to a display data signal received thereby. The time control circuit is configured to control a passage time of the driving current according to a time data signal and a switch control signal received thereby. The light-emitting component is configured to emit a light according to the intensity and the passage time of the driving current.Type: GrantFiled: January 7, 2019Date of Patent: July 16, 2024Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Han Yue, Xiaochuan Chen, Minghua Xuan, Can Wang, Can Zhang, Ning Cong, Ming Yang
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Patent number: 12025875Abstract: A common electrode for a display, which is originally provided in a liquid crystal display element, is also used as one (drive electrode) of a pair of electrodes for a touch sensor, and the other (detection-electrode-for-the-sensor) of the pair of electrodes is newly formed. An existing common drive signal as a drive signal for display is used in common for a drive signal for the touch sensor. A capacitance is formed between the common electrode and the detection-electrode-for-the-sensor, and touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. Thus, a display device with a touch sensor is also applicable to a mobile device in which electric potential of the user is inconstant in many cases. The newly-provided electrode is only the detection-electrode-for-the-sensor, and it is unnecessary to newly prepare a drive signal for the touch sensor.Type: GrantFiled: May 11, 2023Date of Patent: July 2, 2024Assignee: JAPAN DISPLAY INC.Inventors: Koji Noguchi, Daisuke Takama, Yoshitoshi Kida
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Patent number: 12008973Abstract: An area of a region arranged on one side of a display region in a direction in which scanning lines extend is reduced. A display apparatus has a scanning line driving circuit and a plurality of scanning lines. The scanning line driving circuit is provided in a region arranged along a side portion on the positive side in the X-axis direction in a display region of a substrate. The scanning line driving circuit includes a plurality of transfer circuits connected to the plurality of scanning lines, respectively. Among the plurality of transfer circuits, the shape of one transfer circuit is different from the shape of another transfer circuit arranged on the negative side of the one transfer circuit in the Y-axis direction.Type: GrantFiled: July 13, 2021Date of Patent: June 11, 2024Assignee: Japan Display Inc.Inventor: Nobuyuki Ishige
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Patent number: 12008969Abstract: A backlight system includes a backlight and a master driving circuit. The backlight includes a plurality of slave driving circuits and a plurality of light sources driven by the plurality of slave driving circuits, wherein the plurality of slave driving circuits are arranged in a matrix of driving rows and driving columns such that first through m-th slave driving circuits, where m is a positive integer greater than one, are arranged in each driving row of the driving rows, and the first through m-th slave driving circuits are connected in a daisy chain structure. The master driving circuit is configured to generate a plurality of input data signals, wherein each input data signal of the plurality of input data signals corresponds to the each driving row, and the each input data signal includes first through m-th packets including luminance data corresponding to the first through m-th slave driving circuits.Type: GrantFiled: October 3, 2022Date of Patent: June 11, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kangjoo Kim, Sugyeung Kang, Yongsik Kwak, Yongil Kwon, Sunkwon Kim, Uijong Song, Sewoong Ahn
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Patent number: 11996838Abstract: A driving device comprises a first complementary metal-oxygen-semiconductor circuit and a first comparator. The first complementary metal-oxygen-semiconductor circuit is configured for outputting a power signal or a pull-down signal according to the first input signal. The first comparator comprises a first non-inverting input terminal and a first inverting input terminal. The first non-inverting input terminal is coupled to the first complementary metal-oxygen-semiconductor circuit, and is configured to receive the power signal or the pull-down signal. The first inverting input terminal is configured for receiving a first reference signal, and the first comparator is configured to compare one of the power signal and the pull-down signal and the first reference signal to provide a first driving signal.Type: GrantFiled: July 12, 2022Date of Patent: May 28, 2024Assignee: AUO CORPORATIONInventors: Chi-Yu Geng, Ming-Hung Tu, Ya-Fang Chen, Chih-Hsiang Yang
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Patent number: 11994961Abstract: An image display system includes a display device, a second memory circuit, and an image processor circuit. The display device includes a panel and a first memory circuit, in which the first memory circuit is configured to store first predetermined data for controlling the panel. The second memory circuit is configured to store second predetermined data. The image processor circuit is configured to read first part data in the first predetermined data and second part data in the second predetermined data and compare the first part data with the second part data. If the first part data is identical to the second part data, the image processor circuit is further configured to output a driving signal according to the second predetermined data to control the panel to start displaying an image.Type: GrantFiled: November 29, 2021Date of Patent: May 28, 2024Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Chia-Wei Yu, Chun-Hsing Hsieh
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Patent number: 11990102Abstract: In a first output mode, a signal in which a data pulse having a positive polarity voltage value appears in a predetermined cycle is output as a positive polarity gradation data signal, and a signal in which a data pulse having a negative polarity voltage value appears in the predetermined cycle with a phase different from the positive polarity gradation data signal is output as a negative polarity gradation data signal. In a second output mode, the above positive polarity gradation data signal is generated, and a signal in which a data pulse having a negative polarity voltage value appears in the predetermined cycle with the same phase as the positive polarity gradation data signal is output as the negative polarity gradation data signal. The first and second output modes are alternatively executed, and the output mode is switched within a predetermined period at intervals of the predetermined period.Type: GrantFiled: January 5, 2023Date of Patent: May 21, 2024Assignee: LAPIS Technology Co., Ltd.Inventor: Hiroshi Tsuchi
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Patent number: 11990502Abstract: To provide a display device capable of performing image processing. Each pixel is provided with a memory circuit in which desired correction data is retained. The correction data is generated by calculation in an external device and written to each pixel. The correction data is added to image data by capacitive coupling and supplied to a display element. Thus, the display element can display a corrected image. Through the correction, image upconversion can be performed, or image quality decreased because of variations in pixel transistor characteristics can be corrected.Type: GrantFiled: August 10, 2018Date of Patent: May 21, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Susumu Kawashima, Koji Kusunoki, Kazunori Watanabe, Kouhei Toyotaka, Naoto Kusumoto, Shunpei Yamazaki
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Patent number: 11983347Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.Type: GrantFiled: March 23, 2023Date of Patent: May 14, 2024Assignee: LG Display Co., Ltd.Inventors: HongJu Lee, HyeongWon Kang, Youngwoo Jo
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Patent number: RE50119Abstract: A liquid crystal display includes gate lines, data lines intersecting with the gate lines to define sub-pixels, and a transmission part including transmission lines connected with the data lines to transmit data signals, where at least one pair of the transmission lines are arranged to cross each other, some of the transmission lines cross each other so that a sequence of data signals applied to the data lines can be changed, any of the transmission lines is opened at a crossing point of the transmission lines and the opened portion is connected by a separate conductor, thereby insulating the transmission lines crossing each other from each other, and an additional process for connecting the opened portion is not needed, thereby simplifying a fabrication process for the liquid crystal display.Type: GrantFiled: July 26, 2021Date of Patent: September 10, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Dong-Gyu Kim