Liquid Crystal Display Elements (lcd) Patents (Class 345/87)
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Patent number: 12046212Abstract: A GOA circuit and a display panel according to an embodiment of the present disclosure include multi-stage cascaded GOA units. Each GOA unit includes a pull-up control module, an output module, a stage transfer module, a pull-down module, and a pull-down maintenance module. The GOA circuit has a simple structure and can reduce a space occupied by a circuit layout while ensuring the circuit function. Therefore, an aperture ratio of the display panel is increased, and requirements for a narrow frame and a high resolution for the display panel are met.Type: GrantFiled: May 13, 2022Date of Patent: July 23, 2024Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Shasha Jia
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Patent number: 12046215Abstract: A display device includes a plurality of pixels, a plurality of scanning signal lines, a plurality of data signal lines, a source driver configured to supply a data signal to the plurality of pixels via a corresponding data signal line of the plurality of data signal lines, and a spare wiring line configured to connect to a disconnected data signal line. For each data signal output to a data signal line with disconnection corrected by the spare wiring line, the source driver sets an output delay amount according to a disconnection position and a line position of a pixel to be supplied with the data signal.Type: GrantFiled: August 1, 2023Date of Patent: July 23, 2024Assignee: Sharp Display Technology CorporationInventor: Junichi Sawahata
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Patent number: 12046211Abstract: The liquid crystal display device includes a first substrate provided with a terminal portion, a switching transistor, a driver circuit portion, and a pixel circuit portion including a pixel transistor and a plurality of pixels, a second substrate provided with a common electrode electrically connected to the terminal portion through the switching transistor, and liquid crystal between a pixel electrode and the common electrode. In a period during which a still image is switched to a moving image, the following steps are sequentially performed: a first step of supplying the common potential to the common electrode; a second step of supplying a power supply voltage to the driver circuit portion; a third step of supplying a clock signal to the driver circuit portion; and a fourth step of supplying a start pulse signal to the driver circuit portion.Type: GrantFiled: June 4, 2021Date of Patent: July 23, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Jun Koyama, Hiroyuki Miyake
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Patent number: 12047074Abstract: A driving circuit is provided, including first to second output stage circuits that output, respectively, first and second voltages of a first polarity. The driving circuit further includes a first switch having a first terminal receiving the first voltage from the first output stage circuit and a second terminal coupled to a first output channel through a switching circuit, and a second switch having a first terminal receiving the second voltage from the second output stage circuit and a second terminal coupled to a second output channel through the switching circuit. The driving circuit further includes a first charge sharing circuit having a first terminal coupled to the first output channel and a second terminal coupled to the second output channel. The first charge sharing circuit is turned on to provide charge sharing between the first output channel and the second output channel.Type: GrantFiled: December 7, 2022Date of Patent: July 23, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventor: Chia-Chu Chien
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Patent number: 12046070Abstract: A display device includes a display panel, and a sensor panel under the display panel, and including a fingerprint sensor, a proximity sensor between the fingerprint sensor and an edge of the sensor panel, and an illuminance sensor between the fingerprint sensor and the edge of the sensor panel, and adjacent to the proximity sensor.Type: GrantFiled: May 4, 2021Date of Patent: July 23, 2024Assignee: Samsung Display Co., Ltd.Inventors: Sangwoo Kim, Taekyung Ahn, Byung Han Yoo, Taehoon Yang, Dae-Young Lee
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Patent number: 12039937Abstract: A display device includes: a display unit including a first display area, and a second display area; a scan driver configured to provide a scan signal to each scan line connected to the plurality of first pixels and the plurality of second pixels; and an emission controller configured to provide an emission control signal to each emission control line connected to the plurality of first pixels and the plurality of second pixels, wherein the plurality of first pixels have a first density in the first display area, the plurality of second pixels have a second density less than the first density in the second display area, and the plurality of second pixels include at least one sub pixel including one boosting capacitor.Type: GrantFiled: December 12, 2022Date of Patent: July 16, 2024Assignee: Samsung Display Co., Ltd.Inventors: Sung Hwan Kim, Won Kyu Kwak, Jung Hoon Shim, Yun Kyeong In
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Patent number: 12039912Abstract: A display apparatus includes a display panel including a plurality of pixels variably driven between a first refresh rate and a second refresh rate which is different than the first refresh rate, a processor outputting a frequency variation command signal indicative of a request to switch between the first refresh rate and the second refresh rate, and a timing controller differently controlling a time when a refresh rate of the plurality of pixels changes between the first refresh rate and the second refresh rate based on a temporal position of the frequency variation command signal received from the processor.Type: GrantFiled: November 14, 2022Date of Patent: July 16, 2024Assignee: LG Display Co., Ltd.Inventors: Young Ho Kim, Jun Ho Yoo
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Patent number: 12033587Abstract: A display driving apparatus includes a source driving circuit supplying a first source signal to a first display area to display a first image and supply a second source signal to a second display area to sense characteristics of a pixels of the second display area when a display panel operates in a hybrid mode, the second display area being in a turn-off state during the hybrid mode, a gate driving circuit supplying a gate pulse to first gate lines of the first display area and supply the gate pulse to target gate lines of the second display area, a timing controller transferring first image data for the first image and sensing data for sensing to the source driving circuit and compensate for second image data for a second image which is to be displayed after the first image, based on a target compensation value obtained from a sensing result.Type: GrantFiled: December 8, 2022Date of Patent: July 9, 2024Assignee: LX Semicon Co., Ltd.Inventors: Do Hoon Lee, Hyun Kyu Jeon, Ji Won Lee, Jung Eun Baek, Jae Chan Cho
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Patent number: 12029088Abstract: A display substrate includes a base substrate including a display area and a peripheral area located at least on a first side of the display area. A plurality of pixel units are arranged in the display area. A first power trace is located in the peripheral area. A scan driving circuit is located in the peripheral area. The scan driving circuit includes a first scan driving circuit and a second scan driving circuit. A layer where the first power trace is located is located on a side of a layer where the scan driving circuit is located away from the base substrate. An orthographic projection of the first power trace on the base substrate at least partially overlaps an orthographic projection of the first scan driving circuit on the base substrate, and at least partially overlaps an orthographic projection of the second scan driving circuit on the base substrate.Type: GrantFiled: November 29, 2021Date of Patent: July 2, 2024Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Haigang Qing, Ziyang Yu, Wenbo Chen
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Patent number: 12027094Abstract: Provided is a data driver including a digital to analog converter configured to convert image signal data into a plurality of data voltages, and an output buffer unit including a plurality of channels for outputting the plurality of data voltages. The output buffer unit includes a plurality of output blocks. Each output block includes one or more channels. Data voltages outputted from a first output block among the plurality of output blocks are delayed with a first time difference. Data voltages outputted from a second output block among the plurality of output blocks are delayed with a second time difference which is different from the first time difference.Type: GrantFiled: December 9, 2020Date of Patent: July 2, 2024Assignee: Samsung Display Co., Ltd.Inventors: Sooyeon Kim, Hee-Jeong Seo, Jiye Lee, Taegon Im, Junghwan Cho
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Patent number: 12027753Abstract: An electronic package is provided, in which a ground layer is arranged on one side of an insulator, and a first antenna portion and a second antenna portion embedded in the insulator are vertically disposed on the ground layer, where a gap is formed between the first antenna portion and the second antenna portion, such that the first antenna portion and the second antenna portion are electrically matched with each other, and the ground layer is electrically connected to the second antenna portion but free from being electrically connected to the first antenna portion.Type: GrantFiled: June 28, 2021Date of Patent: July 2, 2024Assignee: SILICONWARE PRECISION INDUSTRIES CO., LTD.Inventors: Chia-Chu Lai, Ho-Chuan Lin, Min-Han Chuang
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Patent number: 12020668Abstract: An image output device coupled to a first and second signal source and a method thereof. The image output device includes memories configured to store frame image data respectively, a source selection circuit coupled to the first and second signal sources and the memories and configured to choose to store a first frame image data transmitted by the first or second signal source in one of the memories according to a working state of the first signal source, and an image output circuit coupled to the memories and the source selection circuit and configured to output the first frame image data stored in one of the memories. The image output device may rapidly switch to a backup signal source when the signal source is unstable to achieve fast switching and perfect connection.Type: GrantFiled: November 15, 2021Date of Patent: June 25, 2024Assignee: Coretronic CorporationInventors: Keng-Chia Chang, Fu-Shan Wang, Li-Ming Chen
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Patent number: 12020995Abstract: A display device includes a display area, a peripheral area, a pad portion, a bending area, a first crack detection circuit, and a first crack detection line. The display area includes pixels and data lines. The peripheral area is disposed outside the display area. The pad portion is disposed in the peripheral area. The bending area is disposed in the peripheral area. The bending area is bendable or in a bent state. The first crack detection circuit is disposed between the display area and the pad portion. The first crack detection circuit includes switches. The first crack detection line includes a first curved portion disposed in the bending area. The first crack detection line is connected between the pad portion and the first crack detection circuit.Type: GrantFiled: April 20, 2023Date of Patent: June 25, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Woong Kim, Won Kyu Kwak, Seung-Kyu Lee
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Patent number: 12019795Abstract: A user's eyes and if desired head is tracked as the user's gaze follows a moving object on a display. Motion blur of the moving object is keyed to the eye/head tracking. Motion blur of other objects in the frame also may be keyed to the eye/head tracking.Type: GrantFiled: August 3, 2021Date of Patent: June 25, 2024Assignee: Sony Interactive Entertainment Inc.Inventors: Steven Osman, Kazuyuki Arimatsu
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Patent number: 12020500Abstract: A display panel includes a display module and a fingerprint identification module. The display module includes an array substrate and a plurality of light-emitting units. A light-emitting unit includes a reflecting electrode. The display module includes a plurality of light-transmitting regions disposed on the array substrate. The fingerprint identification module is configured to perform fingerprint identification according to the light which is firstly reflected by a touch body, secondly passes through the light-transmitting regions of the display module, and thirdly hits the fingerprint identification module. The light-transmitting regions of the display module include a plurality of first light-transmitting regions. The area of one first light-transmitting region is greater than or equal to 2.5% of the area occupied by one pixel unit. In the direction perpendicular to the display panel, a first light-transmitting region is corresponding to an electrical potential connecting point.Type: GrantFiled: November 4, 2021Date of Patent: June 25, 2024Assignee: KunShan Go-Visionox Opto-Electronics Co., LtdInventors: Xu Qin, Huan Wang, Lu Zhang
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Patent number: 12014697Abstract: According to an aspect, a display device includes a pixel, a scanning line, a signal line, and a drive circuit. The drive circuit includes a gate driver, a signal line selection circuit, and a display control circuit. Holding capacitance is provided between a pixel electrode and a common electrode supplied with a common potential lower than a GND potential in a display operation. The display control circuit is configured to, at first time in a power-off sequence, supply a first power supply voltage signal to the scanning line, supply the common potential to the common electrode, and supply the GND potential to the signal line. The display control circuit is configured to supply the GND potential to the scanning line at second time after the first time. The display control circuit is configured to supply the GND potential to the common electrode at third time after the second time.Type: GrantFiled: August 17, 2023Date of Patent: June 18, 2024Assignee: Japan Display Inc.Inventor: Tadayoshi Katsuta
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Patent number: 12013723Abstract: An HMD includes a mounting band for surrounding a head H of a user. The mounting band includes a case, a stretching unit, an adjustment mechanism that adjusts a length of the stretching unit to be accommodated in the case by relatively moving the stretching portion with respect to the case, a winding target member, and a spring member which is fixed at a front portion thereof to the stretching unit and at a rear portion thereof wound on the winding target member and in which an unwinding amount from the winding target member changes according to the length of the stretching unit accommodated in the case. The spring member generates elastic force that acts in a direction in which the stretching portion is accommodated into the case. A first elastic force of the spring member generated by a first unwinding amount and a second elastic force of the spring member generated by a second unwinding amount are equal to each other.Type: GrantFiled: February 8, 2019Date of Patent: June 18, 2024Assignee: Sony Interactive Entertainment Inc.Inventor: Toru Kuronuma
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Patent number: 12008185Abstract: An input/output device includes a first sensor electrode and a second sensor electrode. In addition, the input/output device includes a first electrode and a second electrode which are electrodes for a display element, and a substrate sandwiched between the first sensor electrode and the second sensor electrode. The second sensor electrode is formed concurrently with the first electrode using the same material. The input/output device sensors a change in capacitance of a capacitor formed between the first sensor electrode and the second sensor electrode. Furthermore, a third sensor electrode to which a floating potential is applied may be provided to overlap with the first electrode. In the input/output device, either a liquid crystal element or a light-emitting element may be used, or both the liquid crystal element and the light-emitting element may be used.Type: GrantFiled: May 4, 2023Date of Patent: June 11, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Shunpei Yamazaki
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Patent number: 12008976Abstract: A display panel and driving method, and a display device are provided. The display panel includes a display region and a border region. The display region includes a plurality of data lines extending along a first direction. The border region includes a data output circuit, having an output end electrically connected to a data line. The data output circuit includes at least one demultiplexer and 2L first-demultiplexers, where L is a positive integer, and L1. Each demultiplexer group includes a plurality of second-demultiplexers. The plurality of second-demultiplexers share a group of clock signal buses, wherein a portion of the plurality of second-demultiplexers are connected with a portion of the group of clock signal buses, and a remaining portion of the plurality of second-demultiplexers are connected with a remaining portion of the group of clock signal buses.Type: GrantFiled: August 4, 2022Date of Patent: June 11, 2024Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.Inventors: Peng Zhang, Xinzhao Liu
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Patent number: 12008932Abstract: A display device comprises a display area and a first non-display area located on a side of the display area in a first direction, a first bus pattern disposed in the first non-display area, a second bus pattern disposed in the first non-display area and spaced apart from the first bus pattern in a second direction intersecting the first direction, first voltage lines disposed in the display area, extending in the first direction, and electrically connected to the first bus pattern, second voltage lines disposed in the display area, extending in the first direction, and electrically connected to the second bus pattern, and a first test pad disposed in the first non-display area and disposed between the first bus pattern and the second bus pattern.Type: GrantFiled: December 12, 2022Date of Patent: June 11, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Do Yeong Park, Chong Chul Chai
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Patent number: 11994710Abstract: A backlight unit is described. The unit includes a light emitting array having a plurality of light sources configured to emit light, and a printed circuit board on which the light sources are arranged; a light guide film configured to guide light emitted from the light sources in one direction; a color conversion layer configured to convert light that has passed through the light guide film into light of a specific color; and an optical member disposed on the color conversion layer. The light sources include first light sources arranged on a first row of the printed circuit board, and second light sources arranged on a second row of the printed circuit board. The first light sources are spaced apart from each other by a predetermined distance, and the second light sources are spaced apart from each other by the predetermined distance.Type: GrantFiled: October 17, 2022Date of Patent: May 28, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Wee Joon Jeong, Sang Woon Jung
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Patent number: 11996064Abstract: A display drive device includes a common voltage generating circuit that applies a voltage obtained by amplifying a reference common voltage to a common electrode as a common voltage, a reference gamma voltage generating circuit generating first to kth reference gamma voltages corresponding to predetermined gamma characteristics, a gamma compensation circuit receiving a voltage of the common electrode from the display panel and generating first to kth compensated reference gamma voltages obtained by adjusting voltage values of the first to kth reference gamma voltages based on a difference between the received voltage of the common electrode and the reference common voltage, and data drivers, each receives the first to kth compensated reference gamma voltages, generates grayscale voltages based on the first to kth compensated reference gamma voltages, selects a grayscale voltage corresponding to a brightness level indicated by a video signal, and supplies the grayscale voltage to each data line.Type: GrantFiled: March 22, 2023Date of Patent: May 28, 2024Assignee: LAPIS Technology Co., Ltd.Inventor: Koji Higuchi
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Patent number: 11983362Abstract: A first detection signal creation unit has detection nodes connected to detection electrodes in one-to-one correspondence. The first detection signal creation unit supplies charge from each detection node through a second wire to the relevant detection electrode so that a voltage at the relevant detection node vibrates according to an alternating-current voltage, and creates first detection signals matching the supplied charge. First filters are provided in first paths, each of which branches from an alternating-current output node to a first wire. A phase difference signal creation unit creates a phase difference signal matching the phase difference between the alternating-current voltage and one of the first detection signals.Type: GrantFiled: March 20, 2023Date of Patent: May 14, 2024Assignee: Alps Alpine Co., Ltd.Inventors: Akihisa Iikura, Motoshi Oi, Tomoya Sasaki
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Patent number: 11982910Abstract: According to one embodiment, a display device includes a first substrate having a first transparent substrate and a pixel electrode, a second substrate having a second transparent substrate, a first common electrode, a second common electrode, and an insulating film disposed between the first common electrode and the second common electrode, and a liquid crystal layer. The first common electrode is disposed between the liquid crystal layer and the insulating film, and includes a first opening and a first electrode portion. The second common electrode is disposed between the insulating film and the second transparent substrate, and includes a second electrode portion overlapping the first opening.Type: GrantFiled: December 29, 2022Date of Patent: May 14, 2024Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Tenfu Nakamura, Kentaro Okuyama
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Patent number: 11980085Abstract: A display device includes a sensing line and a data driver. The sensing line is in a display panel. The data driver includes a plurality of integrated circuits. Each of the integrated circuits includes an interface, which includes a mobile industry processor interface (MIPI) and a crack detector. The crack detector detects cracks of the panel based on the sensing line and transmits and receives information corresponding to the crack to and from adjacent ones of the integrated circuits using a transmission terminal and a reception terminal in the MIPI.Type: GrantFiled: July 16, 2021Date of Patent: May 7, 2024Assignee: Samsung Display Co., Ltd.Inventor: Ho Seok Han
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Patent number: 11969277Abstract: The present disclosure discloses a flat panel detector, a driving method thereof and a detection device. The flat panel detector includes: at least one stage of first demultiplexer, wherein signal output terminals of a first stage of first demultiplexer are connected with the scanning signal lines in one-to-one correspondence, signal output terminals of other stage of first demultiplexer serves as signal input terminals of the previous stage of first demultiplexer, the first demultiplexers are configured to provide signals of the signal input terminals to all the signal output terminals in time division, the signal input terminals and the signal output terminals included in the different stages of first demultiplexers differ from one another, and the quantity of the signal input terminals and the quantity of the signal output terminals are reduced stage by stage from the first stage of first demultiplexer to the last stage of first demultiplexer.Type: GrantFiled: November 1, 2021Date of Patent: April 30, 2024Assignees: Beijing BOE Sensor Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Fengchun Pang, Xuecheng Hou, Jinyu Li, Zhenwu Jiang
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Patent number: 11972718Abstract: A display device displays an image in which each frame is formed by at least two subframes. The display device includes a drive unit configured to drive a plurality of pixels in a pixel array so as to drive pixels in at least two rows based on pixel data of each row of each supplied subframe data. The drive unit drives the plurality of pixels so as to cause pixels in a row not matching a row in the supplied current subframe data to emit light with a first condition, and cause pixels in a row matching the row in the current subframe data to emit light with a second condition. The second condition is a condition in which a light emission amount is larger than in the first condition when causing the pixels to emit light in accordance with identical pixel values.Type: GrantFiled: March 16, 2023Date of Patent: April 30, 2024Assignee: Canon Kabushiki KaishaInventors: Kazunori Matsuyama, Noriyuki Shikina
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Patent number: 11972821Abstract: A shift register unit and a control method thereof, a gate driving circuit, and a display device are provided. The shift register unit comprises: a first control circuit (110) and an energy storage circuit (150), which directly control the potential of a first node (Q1); a pull-down control circuit (120), a second control circuit (130) and a first pull-down circuit (140), which indirectly control the potential of the first node (Q1); and an output circuit (160), which outputs, under the control of the potential of the first node (Q1), a first voltage signal provided by a first voltage end (VDD) to a signal output end. By means of the shift register unit, the control method thereof and the gate drive circuit, the pulse width of a gate scanning signal can be adjusted, thereby meeting various display requirements.Type: GrantFiled: April 15, 2021Date of Patent: April 30, 2024Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Zhidong Yuan, Yongqian Li, Can Yuan
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Patent number: 11972717Abstract: Embodiments of the present disclosure provide a method of driving display, and a display device. The method of driving display includes: scanning, progressively or rows by rows, a plurality of sub-pixels arranged in an N×M array, to turn on each row of sub-pixels scanned, so that a duration in which two adjacent rows of sub-pixels are simultaneously in an ON state is greater than or equal to two times a unit scanning time, wherein the unit scanning time is a time required for scanning a row of sub-pixels, N is an integer greater than 1, and M is an integer greater than 1; and applying data signals to at least two rows of sub-pixels simultaneously in the ON state, so that a duration of applying the data signals to each row of sub-pixels is greater than the unit scanning time.Type: GrantFiled: March 13, 2023Date of Patent: April 30, 2024Assignees: Beijing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Zhihua Sun, Yinlong Zhang, Qiujie Su, Feng Qu, Jing Liu, Yanping Liao, Xibin Shao
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Patent number: 11968860Abstract: An organic light emitting display device including a dam structure disposed in a non-display area of a substrate and an alignment mark disposed outside the dam structure. The alignment mark is not covered by, and does not overlap with, the dam structure, because the alignment mark is disposed outside the dame structure. Thus, a scribing process may be performed smoothly.Type: GrantFiled: December 13, 2022Date of Patent: April 23, 2024Assignee: LG Display Co., Ltd.Inventor: Dongjin Kim
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Patent number: 11966118Abstract: A display device includes: a plurality of backlight modules, where each backlight module includes a plurality of light sources capable of emitting light in at least three different colors; a color-filter-less liquid crystal display module including a plurality of pixel units arranged in an array form and a plurality of scanning lines coupled to the pixel units; where the plurality of backlight modules are arranged in parallel with the liquid crystal display module; where an orthogonal projection of each backlight module onto a plane where the liquid crystal display module is located corresponds to at least two rows of pixel units, where the pixel units in one row are along an length extension direction of each scanning line; and a driving circuit coupled to each backlight module and configured to apply a backlight driving signal to each backlight module.Type: GrantFiled: June 11, 2021Date of Patent: April 23, 2024Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Pengtao Li, Rui Han, Xiaoxia Wang, Jie Yu, Qing Ma, Daekeun Yoon, Weining Chi, Li Tian
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Patent number: 11967294Abstract: A common electrode driver includes an inverting amplifier including a first resistor, a second resistor, and an operational amplifier, and a resistance ratio adjustment circuit that adjusts, in accordance with a length of one horizontal scan period, a resistance ratio being a ratio of a resistance value of the second resistor to a resistance value of the first resistor. A feedback voltage is provided to one end of the first resistor. The resistance ratio adjustment circuit sets the resistance ratio when second driving is performed, in which a length of one horizontal scan period is a second time longer than a first time, to be smaller than the resistance ratio when first driving is performed, in which a length of one horizontal scan period is the first time.Type: GrantFiled: May 1, 2023Date of Patent: April 23, 2024Assignee: Sharp Display Technology CorporationInventors: Masaki Uehata, Yasuki Mori, Kohji Saitoh, Takayuki Mizunaga, Kazuya Kondoh, Takashi Nojima, Kazuhisa Yoshimoto, Kosuke Kawamoto, Hiroyuki Kito, Kazuki Nakamichi
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Patent number: 11961491Abstract: An electro-optical device is provided and includes a plurality of first signal lines extending in a first direction on a substrate; a plurality of second signal lines extending in a second direction on the substrate, the second direction intersecting the first direction; a pixel area in which a plurality of pixel electrodes are disposed; an outer peripheral edge of the pixel area having a curved portion or a bent portion; and a first circuit block, a second circuit block, and a third circuit block arranged along the outer peripheral edge, wherein the second circuit block is arranged between the first circuit block and the first circuit block, and a first gap between the first circuit bock and the second circuit block is different from a second gap between the second circuit block and the third circuit block.Type: GrantFiled: June 1, 2023Date of Patent: April 16, 2024Assignee: Japan Display Inc.Inventors: Katsuya Anzai, Hideki Kawada, Hiroshi Matsuda, Yukitada Iwasaki
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Patent number: 11961473Abstract: A display device includes a pixel, wherein the pixel has a driving transistor, a monitoring transistor connected to the driving transistor, and a resistor provided in the pixel, and having one end connected between the driving transistor and the monitoring transistor, and the display device is capable of detecting a temperature of the pixel in accordance with a value of current that flows through the resistor and the monitoring transistor.Type: GrantFiled: November 27, 2020Date of Patent: April 16, 2024Assignee: SHARP KABUSHIKI KAISHAInventor: Seiichi Uchida
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Patent number: 11961950Abstract: A display device comprises a substrate, a semiconductor layer thereon, a first insulating layer on the semiconductor layer, a first conductive layer on the first insulating layer and including a first electrode pattern, a second insulating layer on the first insulating layer and including first and second conductive patterns, a third insulating layer on the second conductive layer, and a display element layer on the third insulating layer and including a first pixel electrode connected to the first conductive pattern through a first via hole, a second pixel electrode connected to the second conductive pattern through a second via hole, and a micro light-emitting element between the pixel electrodes, the first conductive pattern contacting the semiconductor layer through a first contact hole and the first electrode pattern through a second contact hole, and the second conductive pattern overlapping the first electrode pattern to form a first capacitor therewith.Type: GrantFiled: February 12, 2019Date of Patent: April 16, 2024Assignee: Samsung Display Co., Ltd.Inventors: Kyung Bae Kim, Hyun Joon Kim, Kyung Hoon Chung, Mee Hye Jung, Min Jae Jeong, Jun Ki Jeong
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Patent number: 11955095Abstract: The disclosure provides an output circuit, a display driver including the output circuit and a display device. The disclosure includes a PMOS transistor switch that outputs a positive voltage signal from an output terminal when it is turned on, an NMOS transistor switch that outputs a negative voltage signal from the output terminal when it is turned on, and a voltage control circuit that supplies a voltage obtained by shifting the level of a voltage of a source or a drain when the PMOS transistor switch is turned on to a high potential side to a back gate of the PMOS transistor switch and supplies a voltage obtained by shifting the level of a voltage of a source or a drain when the NMOS transistor switch is turned on to a low potential side to a back gate of the NMOS transistor switch.Type: GrantFiled: March 16, 2022Date of Patent: April 9, 2024Assignee: LAPIS Technology Co., Ltd.Inventor: Hiroshi Tsuchi
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Patent number: 11955473Abstract: To prevent an electrostatic damage on a display device formed with a driving circuit. Protective circuits are provided not only at input terminal parts, but also at intermediate parts of a circuit or at the ends of wiring lines. Otherwise, the protective circuits are provided at the ends of the wiring lines and at the places immediately before and after the input terminals, respectively, and then the circuit is interposed therebetween. Further, the protective circuits are provided around a circuit with a large current consumption.Type: GrantFiled: June 13, 2022Date of Patent: April 9, 2024Assignee: 138 East LCD Advancements LimitedInventor: Yutaka Kobashi
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Patent number: 11951730Abstract: The present disclosure provides a flexible display device. The flexible display device has different base materials for the back supporting film at the bonding region and the non-bonding region, so that it can satisfy the requirements for AOI and bending resistance respectively. The present disclosure also provides a back film for a flexible display device and a preparation method thereof.Type: GrantFiled: December 29, 2020Date of Patent: April 9, 2024Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Penghao Gu, Chunyan Xie, Song Zhang, Ziang Han
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Patent number: 11948518Abstract: A source driver includes a first DAC for driving a first-color subpixel and a second DAC for driving a second-color subpixel. Each DAC is configured to output at least one output voltage according to an N-bit data code, and includes a plurality of sub-DACs, an interpolation circuit and a switch circuit. Each sub-DAC receives m bits of the N-bit data code and generates a set of intermediate voltages accordingly. The interpolation circuit performs an interpolation on a selected set of intermediate voltages according to k bits of the N-bit data code and at least one interpolation control signal, to generate the output voltage. The switch circuit electrically connects the interpolation circuit and a selected sub-DAC which outputs the selected set of intermediate voltages. The interpolation circuit of the first DAC and the interpolation circuit of the second DAC respectively perform the interpolation according to different numbers of interpolation bits.Type: GrantFiled: May 31, 2023Date of Patent: April 2, 2024Assignee: NOVATEK Microelectronics Corp.Inventor: Jhih-Siou Cheng
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Patent number: 11946971Abstract: A power circuit and a testing device are provided. A first voltage output circuit of the power circuit provides normal working voltage to electronic device, and a second voltage output circuit provides aging voltage to electronic device. The aging voltage is greater than the normal working voltage, and a controller stores a preset failure rate curve of an electronic device and controls switching of output voltages of the first voltage output circuit and the second voltage output circuit according to the preset failure rate curve.Type: GrantFiled: September 27, 2020Date of Patent: April 2, 2024Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITEDInventor: Wenxin Li
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Patent number: 11942054Abstract: A driving method of a display device and a display device are disclosed, the driving method including: detecting current pixel inversion mode; determining pixel polarities and first data signals for a next frame based on pixel polarities of a current frame and the inversion mode; determining whether the next frame is an overload image based on pixel bright-or-dark values and grayscale values corresponding to the next frame and those corresponding to the overload image; when the next frame is an overload image, modifying a pixel polarity order corresponding to the first data signals, and generating and outputting second data signals to drive the display device to display the next frame; otherwise outputting the first data signals to drive the display device to display the next frame. The pixel polarities corresponding to the first data signals are in a different order than those corresponding to the second data signals.Type: GrantFiled: December 26, 2022Date of Patent: March 26, 2024Assignee: HKC CORPORATION LIMITEDInventors: Zhenghui Yuan, Tao Fan, Haijiang Yuan
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Patent number: 11942057Abstract: It is an object to provide a display device which can favorably display a image without delayed or distorted signals. The display device includes a first gate driver and a second gate driver. The first gate driver and the second gate driver each include a plurality of flip flop circuits and a plurality of transfer signal generation circuits. Both the flip flop circuit and the transfer signal generation circuit are circuits which output a signal inputted to a first input terminal with a half clock cycle delay. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage. Therefore, delay and distortion of the signal which is inputted from the transfer signal generation circuit to the flip flop circuit can be reduced.Type: GrantFiled: January 23, 2023Date of Patent: March 26, 2024Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Atsushi Umezaki
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Patent number: 11942060Abstract: A display apparatus includes: a display panel including: a gate line; a data line; and a pixel electrically connected to the gate line and the data line, and to display a normal image and a compensation image; a gate driver to output a gate signal to the gate line; a data driver to output a data voltage to the data line; and a power voltage generator to vary a level of a gate power voltage based on a compensation duty ratio corresponding to a ratio between a display duration of the normal image and a display duration of the compensation image.Type: GrantFiled: March 15, 2021Date of Patent: March 26, 2024Assignee: Samsung Display Co., Ltd.Inventors: Eunjin Choi, Wonjin Seo, Kihyun Pyun
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Patent number: 11935456Abstract: The present disclosure relates to a pixel circuit and pixel driving apparatus technology. In this technology, two LEDs are arranged in parallel and selectively used in a hybrid manner in which a PWM (pulse width modulation) scheme for supplying a ramp voltage as a gate voltage for a transistor arranged within a pixel and for turning off the LEDs at the moment when the gate voltage becomes equal to a threshold voltage and a PAM (pulse amplitude modulation) scheme for determining a starting value of the ramp voltage based on a grayscale value of the pixel are combined.Type: GrantFiled: December 19, 2022Date of Patent: March 19, 2024Assignee: LX SEMICON CO., LTD.Inventors: Won Youn Kim, Byung Gwan Jeon
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Patent number: 11929017Abstract: An apparatus for manufacturing a display device comprises a stage, a panel cell disposed on the stage and including a first alignment line, and a second alignment line extending parallel to the first alignment line, a field application part providing an alignment signal to the first alignment line and the second alignment line of the panel cell, and light-emitting elements aligned between the first alignment line and the second alignment line. The field application part provides an alignment signal to the first alignment line and the second alignment line, the alignment signal having the same positive integral value and negative integral value, having a different positive peak voltage from the alignment signal's negative peak voltage, and having a different positive pulse width from the alignment signal's negative pulse width.Type: GrantFiled: January 12, 2023Date of Patent: March 12, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Joo Nyung Jang
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Patent number: 11929041Abstract: A display apparatus includes a backlight module with backlight zones, a panel over the backlight module, and a circuit configured to generate compensated pixel data for the panel based on image data and an arrangement of the zones of the backlight module, in which the image data has image areas respectively corresponding to the backlight zones. For a first image area being a low-luminance image area and a luminance intensity of a first zone of the zones corresponding to the first image area being less than a luminance intensity of a second zone corresponding to a second image area neighboring the first image area, the circuit performs first pixel compensation for high-luminance pixels in the second image area and second pixel compensation on low-luminance pixels in the second image area, in which the second pixel compensation is greater than the first pixel compensation.Type: GrantFiled: November 29, 2022Date of Patent: March 12, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Chao Chen Huang, Tsai Hsing Chen, Cheng Che Tsai, Ching-Wen Wang
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Patent number: 11929018Abstract: A frame generation subsystem renders a sequence of frames and a display control subsystem provides a brightness control signal configured to control a brightness of frames displayed at a display panel via pulse width modulation (PWM) of the brightness control signal and determines a deviation in a duty cycle of a first PWM period of the brightness control signal from a default duty cycle resulting from a delayed rendering of a frame. The display control subsystem adjusts a duty cycle of at least a second PWM period to compensate for the deviation in the duty cycle of the first PWM period. The resulting average duty cycle of the brightness control signal over the two frame periods is approximately equal to a default duty cycle and thereby mitigates viewable flicker resulting from the duty cycle change caused by the delayed rendering.Type: GrantFiled: May 19, 2020Date of Patent: March 12, 2024Assignee: GOOGLE LLCInventors: Sang Young Youn, Sun-il Chang, Wonjae Choi, Hyunchul Kim
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Patent number: 11922871Abstract: An emissive display device includes a display area which includes a plurality of pixels, and a driver disposed at a side of the display area, where the driver includes at least two emission signal stages disposed in one row, and an input signal line connected to the emission signal stages, and the at least two emission signal stages are connected to the same input signal line.Type: GrantFiled: July 29, 2021Date of Patent: March 5, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hae Min Kim, Min Jae Jeong, Jang Mi Kang, Hyun Joon Kim, Jun Hyun Park, Cheol-Gon Lee
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Patent number: 11915666Abstract: A display device, a display driving integrated circuit (DDIC), and an operation method are provided. The display device includes a display panel, a first DDIC, and a second DDIC. The first DDIC generates a display synchronization signal, and drives a first display area of a display panel according to the display synchronization signal. The second DDIC is coupled to the first DDIC to receive the display synchronization signal. The second DDIC performs a frequency tracking operation on an internal clock signal of the second DDIC by selectively using the display synchronization signal. The second DDIC drives a second display area of the display panel according to the internal clock signal and the display synchronization signal.Type: GrantFiled: May 18, 2022Date of Patent: February 27, 2024Assignee: Novatek Microelectronics Corp.Inventors: Jung-Hsuan Sung, Kai-Wen Shao, Chien-Yu Chen
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Patent number: 11915659Abstract: A display device includes a display panel including a pixel, a driving controller that receives an image signal and outputs an image data signal in which the image signal is compensated, and a data driving circuit that provides the pixel with a data signal corresponding to the image data signal. The driving controller includes a memory, a hysteresis calculator that calculates a current hysteresis state value of a current frame based on the image signal and a previous hysteresis state value of a previous frame, which is stored in the memory, and stores the current hysteresis state value in the memory, and a compensator that calculates a compensation value based on the image signal and the previous hysteresis state value stored in the memory and compensates for the image signal depending on the compensation value to output the image data signal.Type: GrantFiled: July 22, 2022Date of Patent: February 27, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kanghee Lee, Joon-Chul Goh, Weonjun Choe