Specific Display Element Control Means (e.g., Latches, Memories, Logic) Patents (Class 345/98)
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Patent number: 12386450Abstract: 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: April 10, 2024Date of Patent: August 12, 2025Assignee: LG Display Co., Ltd.Inventors: Hongju Lee, HyeongWon Kang, Youngwoo Jo
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Patent number: 12366778Abstract: A display module, a manufacturing method thereof, and an electronic terminal are provided. The display module includes a circuit board and a display panel electrically connected to each other. The display panel includes an array substrate and a color filter substrate disposed opposite to each other. The array substrate includes a first common electrode and a second common electrode, and the color filter substrate includes a third common electrode. A first gamma pin of a digital power management integrated chip disposed on the circuit board is electrically connected to the first common electrode, the second common electrode, or the third common electrode.Type: GrantFiled: April 15, 2022Date of Patent: July 22, 2025Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Guoqing Gao, Yunhai Bai, Xinying Luo, Jinao Chen
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Patent number: 12367834Abstract: Display devices with reduced power consumption are disclosed. In one example, a display device includes pixel circuits respectively connected to data lines in a first direction, a first voltage output unit that generates a first ramp wave voltage whose voltage level changes with time, and a first ramp wiring that supplies the first ramp wave voltage generated by the first voltage output unit to each of a plurality of data lines of a first group, in which at least two data lines of the plurality of data lines are brought into a conductive state before outputting the first ramp wave voltage to the first ramp wiring.Type: GrantFiled: March 8, 2023Date of Patent: July 22, 2025Assignee: Sony Semiconductor Solutions CorporationInventors: Takato Mizuashi, Kouichi Hashikaki
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Patent number: 12354558Abstract: A driving circuit includes a driving signal generation circuit, a gating circuit, an output control circuit and an output circuit; the driving signal generation circuit generates and outputs the Nth stage of driving signal; the gating circuit controls to write the gating input signal into the first node; the output control circuit performs a NAND operation on the Nth stage of driving signal and the potential of the second terminal of the output control circuit to obtain a first output signal; the output circuit inverts the first output signal to obtain and provide an output driving signal through the output driving terminal; N is a positive integer.Type: GrantFiled: December 19, 2022Date of Patent: July 8, 2025Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Ziyang Yu, Haijun Qiu, Ming Hu, Zhiliang Jiang, Tianyi Cheng, Jianpeng Wu, Wenbo Chen, Mengqi Wang, Cong Liu, Qian Xu, Qingqing Yan, Pan Zhao, Qing He, Xiangnan Pan, Quanyong Gu
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Patent number: 12340726Abstract: An electronic device is provided. The electronic device includes a processor. The electronic device includes a display including a display panel and a display driver circuit that includes memory. The display driver circuit is configured to identify an event for a display on the display panel. The display driver circuit is configured to, in response to the event of a first type that executes the display through the memory, change, at a timing before a reference time from a start timing of a scan for the display, a state of a signal provided from the display driver circuit to the processor from a first state indicating to enable an image transmission to the display driver circuit to a second state indicating to disable the image transmission.Type: GrantFiled: October 13, 2023Date of Patent: June 24, 2025Assignee: Samsung Electronics Co., Ltd.Inventors: Jaesung Lee, Kyounghwan Kwon, Jongkon Bae, Donghwy Kim, Byungduk Yang
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Patent number: 12342306Abstract: A communication terminal is provided for supporting a periodical data flow by forwarding messages received from a communication network to an external node not synchronised with the communication network. The communication terminal is configured to obtain one or more timing adjustment indications from an access node of the communication network and adjust the transmission and/or reception timing of the periodical data flow in dependence on the timing adjustment indication(s). The one or more timing adjustment indications are based on clock mismatch information between the communication terminal and the external node and a holding time.Type: GrantFiled: November 4, 2022Date of Patent: June 24, 2025Assignee: Huawei Technologies Co., LtdInventors: Hanwen Cao, Josef Eichinger
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Patent number: 12340737Abstract: In a display characterized by regions with different pixel responses due, for example, to local pixel density variation, voltage-to-luminance matching may be non-universal. Therefore, in order to avoid visual artifacts that may hinder a desired visualization of displayed content, it may be advantageous to compensate the different gamma responses. In some cases, such as with electronic devices having a single pixel density across the display, optical calibration may be performed to determine voltage-to-luminance matching. However, in electronic devices with local pixel density variations, it may be disadvantageous to perform optical calibrations for each region with a different pixel density. Instead of using two distinct gamma curves which may include dedicated optical calibration, a global nonlinear scaler (GNLS) compensation may be applied.Type: GrantFiled: November 15, 2023Date of Patent: June 24, 2025Assignee: Apple Inc.Inventors: Mario Miscuglio, Kingsuk Brahma, Jie Won Ryu, Shengkui Gao, Yuchi Che, Graeme M Williams, Yi Qiao, Wei H Yao, Jean-Pierre S Guillou
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Patent number: 12340735Abstract: A pixel array substrate includes a substrate, a gate driver circuit, a first conductive pattern, a first dielectric layer, a second conductive pattern, a second dielectric layer, and a third conductive pattern. The first conductive pattern includes a first branch clock signal line which is electrically connected to the gate driver circuit. The first conductive pattern is located between the substrate and the first dielectric layer. The second conductive pattern is located between the first dielectric layer and the second dielectric layer and includes a shielding structure. The third conductive pattern is located on the second dielectric layer and includes a first clock signal line and a data line. The first branch clock signal line electrically connects the first clock signal line to the gate driver circuit and intersects the data line. The shielding structure is located between the data line and the first branch clock signal line.Type: GrantFiled: March 13, 2024Date of Patent: June 24, 2025Assignee: AUO CorporationInventors: Kuo-Wei Ho, Sheng-Yen Cheng, Yueh-Hung Chung, Ya-Ling Hsu
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Patent number: 12334891Abstract: A modulation device including a plurality of electronic elements, at least one first signal line and a first driving circuit is provided. The at least one first signal line is respectively electrically connected to at least one of the electronic elements. The first driving circuit is electrically connected to the at least one first signal line. The first driving circuit provides a first signal to at least one of the at least one first signal line. The first signal includes a first pulse. The first pulse includes a first section and a second section closely adjacent to the first section.Type: GrantFiled: August 30, 2023Date of Patent: June 17, 2025Assignee: Innolux CorporationInventors: Yi-Hung Lin, Kung-Chen Kuo, Yu-Chia Huang, Nai-Fang Hsu
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Patent number: 12334031Abstract: The present disclosure provides a method for driving a cholesteric liquid crystal display device. The method includes the following steps: utilizing a driving circuit section to sequentially activate each scanning electrode within a display panel; utilizing the driving circuit section to apply first alternating-current (AC) voltage pulses to pixel circuits on an activated scanning electrode during a first stage within a pulse-width modulation (PWM) scanning procedure of an activated scanning electrode; and utilizing the driving circuit section to apply second AC voltage pulses to the pixel circuits on the activated scanning electrode during a second stage of the PWM scanning procedure. A first voltage amplitude and a first period of the first AC voltage pulses are different from a second voltage amplitude and a second period of the second AC voltage pulses, respectively.Type: GrantFiled: April 10, 2024Date of Patent: June 17, 2025Assignee: IRIS OPTRONICS CO., LTD.Inventors: Hui Cheng Lin, Cheng-Hong Yao, Chi Chang Liao
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Patent number: 12327502Abstract: A driver device includes a first data driver chip, a second data driver chip, and a first output control module. The first data driver chip includes a plurality of first data transmission paths. The second data driver chip is disposed adjacent to the first data driver chip. The second data driver chip includes a plurality of second data transmission paths. The first output control module is connected with the m-th first data transmission path and the n-th second data transmission path. The first output control module is configured to conduct an output end of the m-th first data transmission path with an output end of the n-th second data transmission path when an input voltage of the m-th first data transmission path is same as an input voltage of the n-th second data transmission path, where m and n are positive integers.Type: GrantFiled: December 31, 2023Date of Patent: June 10, 2025Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Weifeng Chen
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Patent number: 12322334Abstract: A display device includes a display panel which includes first and second pixels disposed in one pixel row, a first gate line connected to the first pixel, a second gate line connected to the second pixel, a first data line connected to the first pixel, and a second data line connected to the second pixel, a gate driver which provides a first gate signal and a second gate signal to the first gate line and the second gate line, respectively, and a data driver disposed adjacent to a first side of the display panel, where the data driver provides a data signal to the first data line. The first data line and the second data line are connected to each other at a second side of the display panel opposite to the first side of the display panel.Type: GrantFiled: August 21, 2023Date of Patent: June 3, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Eui-Myeong Cho, Yu-Chol Kim, Jihye Kim, Jin-Wook Yang, Seongoh Yeom, Jakyoung Jin
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Patent number: 12316317Abstract: An input buffer circuit includes a low voltage generator, a first hysteresis buffer and a first dual-supply level shifter. The low voltage generator is connected to a first power supply voltage having a first voltage level, generates a mirrored current based on the first power supply voltage and generates a second power supply voltage having a second voltage level smaller than the first voltage level. The second power supply voltage is independent from a variation of the first power supply voltage. The first hysteresis buffer operates based on the second power supply voltage and generates a first inverted reset signal having hysteresis based on an inverted reset signal. The first dual-supply level shifter operates based on the first and second power supply voltages and generates a second inverted reset signal by shifting the first inverted reset signal from the second voltage level to the first voltage level.Type: GrantFiled: April 26, 2024Date of Patent: May 27, 2025Assignee: Samsung Electronics Co., Ltd.Inventors: Hongjin Cheon, Youngkyun Park, Hyosang Youn, Deokgi Lee, Wookwan Lee
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Patent number: 12300147Abstract: A display device includes a data driver providing a data voltage to each of multiple pixels, a scan driver providing first and second scan signals to each of the pixels, and a controller to control the data driver and the scan driver. The scan driver performs a first active scan operation that sequentially provides the first and second scan signals to the pixels in an active period of a first frame period, and initiates a dummy scan operation that sequentially provides the second scan signal to the pixels in a blank period of the first frame period. When a second frame period starts before the dummy scan operation for the pixel in a last row, the data driver changes a level of the data voltage in an overlap period in which the dummy scan operation and a second active scan operation in the second frame period are simultaneously performed.Type: GrantFiled: October 10, 2023Date of Patent: May 13, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jung-Taek Kim, Hong-Kyu Kim, Seungho Park
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Patent number: 12288511Abstract: A dynamic-voltage-control pixel includes a pixel memory, an input circuit operable at a refresh voltage to receive pixel data and store the received pixel data in the pixel memory, a light emitter, and an output circuit operable at a drive voltage to read the stored pixel data from the pixel memory and control the light emitter to output light according to the read stored pixel data. The drive voltage can be less than the refresh voltage. The input circuit, pixel memory, and output circuit can be connected to a common-voltage wire providing a common voltage for operating each of the input circuit, pixel memory, and output circuit.Type: GrantFiled: April 1, 2022Date of Patent: April 29, 2025Assignee: X Display Company Technology LimitedInventors: Murat Ozbas, Ronald S. Cok
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Patent number: 12283220Abstract: An electronic device including: a host processor to generate a first clock signal and to output frame data and a synchronization signal; a driving controller to receive the synchronization signal and the frame data from the host processor and to generate a control signal based on a second clock signal; and a display panel, wherein the driving controller synchronizes the second clock signal with the first clock signal based on the synchronization signal, wherein the driving controller includes an error detector to detect an error of the synchronization signal, and wherein the error detector outputs a first signal when the error is an initial synchronization fail error and outputs a second signal different from the first signal when the error is a synchronization loss error.Type: GrantFiled: March 13, 2024Date of Patent: April 22, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyunsu Kim, Jongman Bae
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Patent number: 12277907Abstract: Provided are a pixel driving circuit and a display panel. The pixel driving circuit includes: a data writing sub-circuit, a threshold compensation sub-circuit, a driving sub-circuit, a storage sub-circuit, a first reset sub-circuit, a second reset sub-circuit. The driving sub-circuit and the storage sub-circuit are connected at a first node; the data writing sub-circuit and the storage sub-circuit are connected at a second node; the first reset sub-circuit includes a first transistor having a control electrode connected with a first reset signal line, a first electrode connected with a first initialization signal line, and a second electrode connected with the first node; the threshold compensation sub-circuit includes a second transistor having a first electrode connected with the first node, a second electrode connected with the second node, and a control electrode connected with a second scan line; the first transistor and/or the second transistor includes an oxide thin film transistor.Type: GrantFiled: July 1, 2022Date of Patent: April 15, 2025Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jiangnan Lu, Libin Liu, Zhenzhen Shan, Shiming Shi
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Patent number: 12272303Abstract: The present disclosure provides a driving circuitry, a driving method, a driving module, and a display device. The driving circuitry includes a driving signal generation circuitry, a gating circuitry, an output control circuitry and an output circuitry. The driving signal generation circuitry is configured to perform a shifting operation on an (N?1)th-level driving signal to obtain an Nth-level driving signal. The gating circuitry is configured to write a gating input signal into a first node under the control of a gating control signal. The output control circuitry is configured to perform an NAND operation on the Nth-level driving signal and a potential at a second end of the output control circuitry to obtain a first output signal. The output circuitry is configured to perform phase inversion on the first output signal to obtain and provide an output driving signal through an output driving end, where N is a positive integer.Type: GrantFiled: May 23, 2023Date of Patent: April 8, 2025Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Ziyang Yu, Haijun Qiu, Ming Hu, Zhiliang Jiang, Tianyi Cheng, Jianpeng Wu, Mengqi Wang, Qi Wei, Wenbo Chen, Tiaomei Zhang, Sifei Ai, Cong Liu, Qian Xu
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Patent number: 12272321Abstract: Systems and methods for electronic displays to use reference voltages to control driving current of illuminators are provided. The reference voltages are used to reduce or eliminate cross talk in driving voltages among different illuminators and driving voltage variations from frame to frame. The transient performance of the driving current of the illuminator (e.g., the current rise/decline time, current overshoot issue, current settling time) may be improved by implementing the reference voltages.Type: GrantFiled: September 6, 2023Date of Patent: April 8, 2025Assignee: Apple Inc.Inventors: Ming Sun, Nicola Rasera, Robert D Zucker, Johan L Piper, Denis M Darmon, Fabio Ongaro, Xiaofeng Wang
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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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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