Electroluminescent Patents (Class 345/76)
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Patent number: 12260799Abstract: In a pixel circuit, a data writing-in circuit is configured to control to connect the data line and the second end of the driving circuit under the control of a first scan signal provided by the first scan line; a reset circuit is configured to control to connect the reset voltage line and the second end of the driving circuit under the control of a third scan signal provided by the third scan line; or control to connect the reset voltage line and the first end of the driving circuit under the control of the third scan signal; a driving circuit is configured to control to connect the first end of the driving circuit and the second end of the driving circuit under the control of a potential of a control end of the driving circuit.Type: GrantFiled: September 9, 2021Date of Patent: March 25, 2025Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yao Huang, Benlian Wang, Binyan Wang, Weiyun Huang, Cong Liu, Kai Zhang
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Patent number: 12260819Abstract: A display device includes a display unit which includes a plurality of pixels, a degradation controller which includes a voltage compensator configured to calculate a driving voltage increase amount based on a degradation amount of a maximum degradation pixel among the pixels and a global current controller configured to calculate calculates a first scale factor for compensating a power increase amount according to the driving voltage increase amount, a driving voltage provider which is configured to increase a driving voltage provided to the pixels based on the driving voltage increase amount, a data compensator which is configured to generate output image data by scaling the first scale factor to grayscale values of input image data, and a data driver which is configured to provide data voltages to the pixels based on the output image data.Type: GrantFiled: June 26, 2023Date of Patent: March 25, 2025Assignee: Samsung Display Co., Ltd.Inventors: Namjae Lim, Seokgyu Ban, Sangmyeon Han, Seungho Park, Byoungkwan An
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Patent number: 12254833Abstract: A display device includes: a plurality of pixels substantially in a matrix form including a plurality of pixel columns in a first direction and a plurality of pixel rows in a second direction intersecting the first direction; a plurality of data lines connected to the pixel columns, respectively; a plurality of scan lines extending in the second direction; and a power line which supplies a driving power voltage to the pixels. Each of the data lines includes a first sub-data line disposed at a side of a corresponding pixel column, and a second sub-data line disposed at an opposite side of the corresponding pixel column, and each of the pixels includes a first transistor and a display element connected to the first transistor, where the power line overlaps with at least a portion of the first transistor.Type: GrantFiled: October 25, 2021Date of Patent: March 18, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun Won Choi, Jun Yong An, Yun Kyeong In, Won Mi Hwang
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Patent number: 12256609Abstract: A display device includes a display panel including a main area and a sensor area. Sensor devices overlap the sensor area of the display panel in a thickness direction of the display panel. The display panel includes first subpixels, which are disposed in the sensor area, and second subpixels, which are disposed in the main area. The number of transistors of each of the first subpixels is different from the number of transistors of each of the second subpixels.Type: GrantFiled: November 24, 2023Date of Patent: March 18, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seung Chan Lee, Gun Hee Kim, Sung Jin Hong, Yoo Min Ko
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Patent number: 12249276Abstract: A display device prevents an increase in chip size and cost by calculating an APL value without a frame memory connected to a timing controller and includes a display panel, a timing controller configured to control an operation of the display panel, a memory configured to store image data of an image frame, and a processor configured to calculate an average picture level (APL) value using the image data stored in the memory, and transfer the calculated APL value to the timing controller.Type: GrantFiled: March 27, 2023Date of Patent: March 11, 2025Assignee: LG ELECTRONICS INC.Inventors: Byung Woo Ryu, Joon Duk Jang
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Patent number: 12245843Abstract: A display device for measuring biometric information such as blood pressure by utilizing both display pixels and light sensing pixels within a display panel. The display device includes a main driving circuit that dynamically sets and adjusts light emission conditions, including emission color and luminance based on the user's touch area and shape, thereby optimizing the detection of biosignals such as pulse waves. The system enhances the signal-to-noise ratio (SNR) and improves the accuracy of biometric measurements.Type: GrantFiled: November 14, 2023Date of Patent: March 11, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jong Yeop An, Chul Kim, Gyeong Ub Moon, Dong Wook Yang, Hyeon Jun Lee
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Patent number: 12244947Abstract: Variation in electrostatic capacitances of control signal lines in a pixel is reduced.Type: GrantFiled: November 16, 2021Date of Patent: March 4, 2025Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventors: Takeyoshi Komoto, Takashi Tanaka
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Patent number: 12243455Abstract: Disclosed is a method for adjusting a ghost reduction potential, a row driving circuit and an LED display device. The method is realized by a row driver module, and comprises: receiving, by a row driver chip, an open-circuit detection signal and a short-circuit detection signal from a row driving side of an LED display panel; according to the open-circuit detection signal and the short-circuit detection signal, by the row driver chip, generating a control signal and transmitting the control signal to a multiplexer, thereby controlling the multiplexer to select only the first/second voltage as the ghost reduction potential, select the first voltage and the second voltage as the ghost reduction potential in sequence, or select the second voltage and the first voltage as the ghost reduction potential in sequence, which efficiently solves constant bright problems caused by an open-circuited/short circuited LED lamp bead, i.e., solving open-circuit/short-circuit caterpillar phenomenon.Type: GrantFiled: December 17, 2020Date of Patent: March 4, 2025Assignee: CHIPONE TECHNOLOGY (BEIJING) CO., LTD.Inventor: Qian Bi
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Patent number: 12243474Abstract: An emissive display device includes a driving transistor that includes a driving gate electrode, a first electrode, and a second electrode; a storage capacitor that includes a first electrode connected to the driving gate electrode and a second electrode; a hold capacitor that includes a first electrode connected to the second electrode of the storage capacitor and a second electrode to which a driving voltage is applied; and a light emitting diode that includes an anode, it further includes a connector that connects the first electrode of the hold capacitor and the second electrode of the hold capacitor, the first electrode of the hold capacitor is in a first gate conductive layer, and the second electrode of the storage capacitor is in a second gate conductive layer, the connector is in a first data conductive layer on the first gate conductive layer and the second gate conductive layer.Type: GrantFiled: October 4, 2023Date of Patent: March 4, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun Hyun Park, Jang Mi Kang, Min Jae Jeong
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Patent number: 12243472Abstract: A light-emitting diode (LED) panel and a driving device therefore is provided. The driving device includes a source driver and a scan driver. The source driver is coupled to a plurality of data lines disposed in the LED panel. The source driver outputs driving currents to the data lines in any one of a plurality of scan line periods, to drive an LED array of the LED panel. The scan driver is coupled to a plurality of scan lines disposed in the LED panel, wherein the scan driver scans the scan lines during the plurality of scan line periods. In an active period of any one of the scan line periods, the scan driver applies an enable voltage to a current scan line among the scan lines, and the scan driver applies a pre-charge voltage to other scan line among the scan lines.Type: GrantFiled: August 4, 2023Date of Patent: March 4, 2025Assignee: Novatek Microelectronics Corp.Inventors: Yu-Sheng Ma, Jhih-Siou Cheng, Chun-Fu Lin, Jin-Yi Lin
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Patent number: 12236859Abstract: Provided is a pixel circuit. The pixel circuit includes: a data writing circuit, coupled to a first gate signal terminal, a second gate signal terminal, a third gate signal terminal, a data signal terminal, a first node, a second node and a third node; a light emission control circuit, coupled to a light emission control terminal, a first power supply terminal, the first node, the third node and a light-emitting element; and a drive circuit, wherein an input terminal, a control terminal and an output terminal of the drive circuit are coupled to the first node, the second node and the third node respectively.Type: GrantFiled: April 18, 2022Date of Patent: February 25, 2025Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Xin Xu, Tsanghong Wang, Hsinwei Huang, Chunyang Li
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Patent number: 12236869Abstract: Provided are a display panel and a display device. The display panel includes a pixel driver circuit. The pixel driver circuit includes a light-emitting module, a drive transistor and at least one light-emitting control transistor. The drive transistor, the light-emitting control transistor and the light-emitting module are connected in series between a first power supply signal terminal and a second power supply signal terminal, and at least one of the drive transistor or the light-emitting control transistor is a first double-gate transistor. The first double-gate transistor includes a first gate, a second gate and a first source, and the second gate is electrically connected to the first source.Type: GrantFiled: October 17, 2022Date of Patent: February 25, 2025Assignee: TIANMA MICROELECTRONICS CO., LTD.Inventors: Lihua Wang, Yuheng Zhang, Qiongqin Mao, Yang Nan, Tingling Li, Yimiao Ding
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Patent number: 12236879Abstract: A display panel includes: first to N-th active pixels, N being an integer greater than 3; and a dummy pixel arranged adjacent to the N-th active pixel in a same pixel column, the dummy pixel including: a dummy driving transistor including a gate electrode connected to a first node, a first electrode connected to a data line configured to transmit a data voltage, and a second electrode connected to a second node; a plurality of dummy compensation transistors connected in parallel to each other between the first node and the second node; a dummy initialization transistor including a gate electrode configured to receive an initialization gate signal, a first electrode configured to receive an initialization voltage, and a second electrode connected to the first node; and a dummy storage capacitor including a first electrode configured to receive a first supply voltage and a second electrode connected to the first node.Type: GrantFiled: December 19, 2023Date of Patent: February 25, 2025Assignee: Samsung Display Co., Ltd.Inventors: Nackhyeon Keum, Kwangsae Lee
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Patent number: 12236875Abstract: Provided are a pixel driving circuit, a display panel and a driving method thereof and a display device. The display panel includes multiple light-emitting elements and multiple pixel driving circuits. A pixel driving circuit includes a pulse width modulation module and a data signal terminal, the pulse width modulation module includes a sweep signal terminal and is configured to control light emission duration of a light-emitting element. The display panel further includes multiple sweep signal lines and multiple data signal lines. The multiple sweep signal lines extend along a first direction and are arranged along a second direction, and a sweep signal line is electrically connected to the multiple sweep signal terminals. The multiple data signal lines extend along the second direction and are arranged along the first direction, and a data signal line is electrically connected to the multiple data signal terminals.Type: GrantFiled: October 11, 2023Date of Patent: February 25, 2025Assignee: Tianma Advanced Display Technology Institute (Xiamen) Co., Ltd.Inventor: Yingteng Zhai
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Patent number: 12236831Abstract: The present disclosure provides a pixel driving circuit and a display panel. The pixel drive circuit includes: a data writing sub-circuit, a threshold compensation sub-circuit, a driving sub-circuit and a storage sub-circuit, the data writing sub-circuit includes a fourth transistor, which includes a first electrode connected with a data line, a second electrode connected with a first terminal of the driving sub-circuit, and a control electrode connected with a first scan signal line, and the fourth transistor is an oxide thin film transistor; the threshold compensation sub-circuit is configured to compensate a threshold voltage of the driving sub-circuit in response to a second scan signal; the storage sub-circuit is configured to store a data voltage signal; the driving sub-circuit is configured to provide a driving current for a light emitting device to be driven according to voltages of the first terminal and a control terminal thereof.Type: GrantFiled: July 1, 2022Date of Patent: February 25, 2025Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Kunyan Shi, Yafei Chen, Gang Wang, Qiang Fu, Erlong Song, Kai Zhang, Peng Xu, Xingrui Cai
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Patent number: 12236852Abstract: A light emitting display apparatus includes an analyzing circuit for analyzing at least one of image change amount and current change amount by analyzing input image data, and generating a driving frequency control signal according to analysis results, a control signal generator for generating driver control signals for changing a period of outputting data voltages according to the driving frequency control signal, transmitting a gate control signal of the driver control signals to a gate driver, and transmitting data control signals of the driver control signals to a data driver, and a data aligning circuit for generating image data by rearranging the input image data transmitted from the analyzing circuit according to a structure of a light emitting display panel, and outputting the image data to the data driver.Type: GrantFiled: August 16, 2023Date of Patent: February 25, 2025Assignee: LG Display Co., Ltd.Inventors: Uitaek Jeong, MooKyoung Hong
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Patent number: 12236907Abstract: The invention discloses an optoelectronic system may include an array of pixel circuits connected to optoelectronic devices. There can be different types of optoelectronic devices (for example, red, green and blue). These devices can be sensors, or light emitting devices or other types of devices. These devices may be optimized differently and to program the pixel circuits, a configuration of dataline for columns and address lines for rows is used.Type: GrantFiled: March 31, 2022Date of Patent: February 25, 2025Assignee: VueReal Inc.Inventor: Gholamreza Chaji
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Patent number: 12236898Abstract: Embodiments of the disclosure relate to a display device and a data driving circuit. Specifically, there may be provided a display device comprising a display panel where a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed, a gate driving circuit configured to supply scan signals to the plurality of gate lines, a data driving circuit configured to convert digital image data into an analog data voltage and supply the analog data voltage to the plurality of data lines, a timing controller configured to control the gate driving circuit and the data driving circuit, a first gamma circuit generating a first gamma voltage corresponding to a first pixel during a period corresponding to a first color selection signal, and a second gamma circuit generating a second gamma voltage corresponding to a second pixel during a period corresponding to a second color selection signal different from the first color selection signal.Type: GrantFiled: July 28, 2023Date of Patent: February 25, 2025Assignee: LG Display Co., Ltd.Inventors: Beom-Jin Kim, Hyunwoo Kim, Bongchoon Kwak, HongJu Lee
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Patent number: 12236853Abstract: A pixel includes a first transistor generating current from a first power source line to a second power source line through a light-emitting element, a second transistor between a third power source line and a gate electrode of the first transistor, a third transistor between a data line and a gate electrode of the second transistor and controlled by a first signal, a fourth transistor between a fourth power source line and a first node and controlled by a second signal, a first capacitor between the gate electrode of the first transistor and the first node, and a second capacitor between the gate electrode of the second transistor and a sweep voltage line providing a sweep voltage that linearly changes from a first voltage level to a second voltage level, and nonlinearly changes from the second voltage level to a third voltage level when the third transistor is on.Type: GrantFiled: August 29, 2023Date of Patent: February 25, 2025Assignee: Samsung Display Co., Ltd.Inventors: Won Jun Lee, Yong Bin Kim, Chol Ho Kim
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Patent number: 12235553Abstract: An array substrate and a display panel are described. The array substrate may include a first base; a plurality of pixel units arrayed on the first base in a row direction and a column direction; each of the pixel units comprising at least two sub-pixels arranged in the row direction; a plurality of first scanning lines sequentially arranged on the first base in the column direction, at least one first scanning line being arranged at a side of each row of pixel units in the column direction, the first scanning lines being connected with the sub-pixels; and a plurality of second scanning lines sequentially arranged on the first base in the row direction, at least one second scanning line being arranged at a side of each column of pixel units in the row direction.Type: GrantFiled: December 4, 2020Date of Patent: February 25, 2025Assignees: Beijing BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yanping Liao, Maoxiu Zhou, Yingmeng Miao, Haipeng Yang, Li Tian, Zhihua Sun
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Patent number: 12230205Abstract: A pixel drive circuit, which includes a data input circuit, a reset compensation circuit, a first switch circuit, a second switch circuit, a third switch circuit, an energy storage circuit and a light-emitting control circuit. The data input circuit is in electrical connection with a control end of the light-emitting control circuit via the energy storage circuit. The reset compensation circuit is in electrical connection with an output of the light-emitting control circuit. The first switch circuit is connected between an output of the data input circuit and an output of the reset compensation circuit. The second switch circuit is connected between an input of the light-emitting control circuit and a first power supply. The third switching circuit is connected between the control end and the input of the light-emitting control circuit. The output of the light-emitting control circuit is in electrical connection with a second power supply.Type: GrantFiled: July 14, 2023Date of Patent: February 18, 2025Assignee: HKC CORPORATION LIMITEDInventors: Xin Yuan, Xiufeng Zhou, Rongrong Li
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Patent number: 12230213Abstract: A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel.Type: GrantFiled: September 20, 2023Date of Patent: February 18, 2025Assignee: LG Display Co., Ltd.Inventors: Se-Hwan Kim, Tae-Keun Lee, Min-Su Kim, Hae-Jun Park, Young-Taek Hong
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Patent number: 12230193Abstract: A light-emitting device is provided. The light-emitting device includes a data input circuit, a driving transistor, a light-emitting component, a storage capacitor, and an electrostatic protection circuit. The driving transistor has a control terminal and a first terminal. The light-emitting component is coupled to the first terminal of the driving transistor. The storage capacitor is coupled between the data input circuit and the control terminal of the driving transistor. The electrostatic protection circuit is coupled to a node between the data input circuit and the storage capacitor. The light-emitting device of the disclosure can reduce electrostatic discharge generated by the storage capacitor to reduce the risk of the light-emitting device being damaged by static electricity.Type: GrantFiled: July 18, 2023Date of Patent: February 18, 2025Assignee: Innolux CorporationInventors: Chung-Le Chen, Shuo-Ting Hong, Ting-Yao Chu
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Patent number: 12230207Abstract: A pixel of a display device includes a first transistor including a gate connected to a first node, a first terminal, and a second terminal connected to a second node, a first storage capacitor connected between the first node and the second node, a second storage capacitor connected between the first node and the second node, a second transistor including a gate connected to the first node, a first terminal, and a second terminal connected to the first node, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor including a gate receiving an emission signal, a first terminal connected to a line of a first power supply voltage, and a second terminal connected to the first terminal of the first transistor, and a light emitting element including an anode connected to the second node, and a cathode connected to a line of a second power supply voltage.Type: GrantFiled: October 20, 2023Date of Patent: February 18, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang-Myoung Lee, Sanghyun Kang, Subin Park, Joosun Yoon, Minseong Yi, Seonghyun Jin, Joon Huh
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Patent number: 12223907Abstract: A pixel circuit includes a light-emitting element, a driving circuit, a first light-emission control circuit, a first initialization circuit, an energy storage circuit, a compensation control circuit and a data written-in circuit. A first terminal of the energy storage circuit is electrically connected to a control terminal of the driving circuit, and a second terminal of the energy storage circuit is electrically connected to a first electrode of the light-emitting element. The data written-in circuit writes a data voltage into a first terminal of the driving circuit under control of a written-in control signal. The compensation control circuit controls the control terminal of the driving circuit to be electrically connected to a second terminal of the driving circuit under control of a compensation control signal.Type: GrantFiled: April 21, 2022Date of Patent: February 11, 2025Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yao Huang, Ming Hu
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Patent number: 12223877Abstract: Provided are a display panel and a display apparatus. The display panel includes M pixel driving circuits and N sub-pixel units, where M<N, and M and N are each a positive integer. The M pixel driving circuits are configured to drive the N sub-pixel units to emit light. According to the technical solutions, the number of pixel driving circuits is reduced, pixels per inch of the display panel are beneficial to improve, and the display resolution is improved. Moreover, the number of pixel driving circuits does not need to be increased while the number of the sub-pixel units is increased, thereby reducing the cost.Type: GrantFiled: June 22, 2023Date of Patent: February 11, 2025Assignee: SEEYA OPTRONICS CO., LTD.Inventors: Jialing Li, Yongcai Shen, Liyuan Luo, Qi Li
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Patent number: 12223896Abstract: A display device includes a display panel including pixels, and a timing controller which determines a first dimming period and a second dimming period based on a maximum luminance, determines an emission off ratio of the pixels as a first off ratio increasing discretely as the maximum luminance decreases in the first dimming period, and determines the emission off ratio as a second off ratio in the second dimming period.Type: GrantFiled: February 23, 2023Date of Patent: February 11, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Subin Park, Soyoung Kim, Jungkook Park
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Patent number: 12223884Abstract: An LED driving circuit adjusts a PWM driving frequency in light emitting diode driving, and changes a PWM frequency of an LED driving circuit in response to a frequency of a PWM clock signal delivered externally or internally.Type: GrantFiled: March 31, 2023Date of Patent: February 11, 2025Assignee: LX SEMICON CO., LTD.Inventors: Sang Suk Kim, Jang Su Kim, Ji Hwan Kim, Jong Min Lee, Kyeong Rok Lee
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Patent number: 12223911Abstract: A pixel includes an organic light emitting diode (OLED), a pixel circuit, and first and second transistors. The OLD includes a cathode electrode connected to a second power source. The pixel circuit includes a driving transistor having a gate electrode initialized by a third power source. The driving transistor controls the amount of current flowing from a first power source to the second power source via the OLED. The first transistor is connected between a fourth power source and the second power source and an anode electrode of the OLED. The first transistor is turned on based on a scan signal is supplied to a scan line. The second transistor is connected between a data line and the pixel circuit. The second transistor is turned on when the scan signal is supplied to the ith scan line.Type: GrantFiled: February 29, 2024Date of Patent: February 11, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jin Tae Jeong, Min Ku Lee, Ji Hyun Ka, Tae Hoon Kwon, Seung Kyu Lee, Seung Ji Cha
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Patent number: 12223899Abstract: Disclosed are a display device and a method for operating pixels of the display device. The display device comprises: a light-emitting element; and a pixel circuit configured to control the light-emitting element, wherein the pixel circuit includes: a capacitor connected to and disposed between a first node and a second node; and a driving transistor including a gate electrode connected to the second node; a first electrode receiving a high-potential driving voltage; and a second electrode connected to a third node, wherein the pixel circuit is configured such that the same voltage is supplied to the first node and the second node during at least a portion of an operation period of the pixel circuit. Thus, occurrence of a reference voltage related short-circuit in the light-emitting element of the pixel circuit is suppressed to prevent occurrence of defective image display in each pixel and to improve reliability thereof.Type: GrantFiled: June 27, 2023Date of Patent: February 11, 2025Assignee: LG Display Co., Ltd.Inventors: Haksu Kim, Hwanjoo Lee
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Patent number: 12225797Abstract: A microcavity pixel design and fabrication method for an organic light emitting diode (OLED) array with a high aperture ratio suitable for a light field display. This is achieved by laterally overlapping intermediate electrodes and optical filler layers, reducing the lateral spacing. The OLED layers in the design have a uniform white OLED stack, allowing each layer to be deposited across the OLED array, simplifying fabrication. The optical path length for each subpixel's optical microcavity is optimized through the thickness of the optical filler layers, allowing the white OLED stack to be uniform, reducing fabrication complexities.Type: GrantFiled: February 13, 2024Date of Patent: February 11, 2025Assignee: Avalon Holographics Inc.Inventors: Jiaqi Cheng, Jordan Peckham
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Patent number: 12219845Abstract: A display apparatus includes: a substrate having a plurality of first group areas spaced apart from each other; a first pixel electrode and a second pixel electrode in each of the plurality of first group areas; a first intermediate layer on the first pixel electrode; a second intermediate layer on the second pixel electrode; an opposite electrode on the first intermediate layer and the second intermediate layer; and a plurality of first capping layers on the opposite electrode and spaced apart from each other to correspond to the plurality of first group areas.Type: GrantFiled: December 7, 2021Date of Patent: February 4, 2025Assignee: Samsung Display Co., Ltd.Inventors: Sanghoon Kim, Jongsung Park, Sangmin Yi, Sangshin Lee, Seungjin Lee, Eunjoung Jung
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Patent number: 12219836Abstract: An array substrate is provided. The array substrate includes a node connecting line in a same layer as a respective one of the plurality of voltage supply lines, connected to a first capacitor electrode through a first via, and connected to a semiconductor material layer through a second via; and an interference preventing block in a same layer as the second capacitor electrode. Along the first direction, a portion of the node connecting line at a position connecting to the semiconductor material layer through the second via is spaced apart from a first adjacent data line by a first arm, and is spaced apart from a second adjacent data line by a second arm. An orthographic projection of a respective one of the plurality of voltage supply lines on the base substrate substantially covers at least 30% of an orthographic projection of the second arm on the base substrate.Type: GrantFiled: January 9, 2024Date of Patent: February 4, 2025Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Maoying Liao, Yang Zhou, Xin Zhang, Huijuan Yang
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Patent number: 12217654Abstract: An electroluminescence display apparatus includes a first pixel, a second pixel disposed adjacent to the first pixel in a horizontal direction to share a data line to which a first data voltage and a second data voltage are time-divisionally supplied and a reference voltage line to which a reference voltage is supplied, along with the first pixel, a first gate line coupled to the first pixel to transfer a first gate control signal, corresponding to the reference voltage, to the first pixel, a second gate line coupled to the first and second pixels in common to transfer a second gate control signal, corresponding to the first data voltage and the reference voltage in common, to the first and second pixels, and a third gate line coupled to the second pixel to transfer a third gate control signal, corresponding to the second data voltage, to the second pixel.Type: GrantFiled: July 29, 2021Date of Patent: February 4, 2025Assignee: LG Display Co., Ltd.Inventors: In Su Hwang, Dong Ik Kim
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Patent number: 12217667Abstract: The disclosure provides a display panel, a compensation of brightness method and a displaying device. The display panel comprises an array substrate, a luminescent layer, a plurality of optical film layers and a photoelectric sensor, wherein the luminescent layer is located on one side of the array substrate, the array substrate is used for driving the luminescent layer to emit light, the optical film layers are located on a side, away from the array substrate, of the luminescent layer, light emitted by the luminescent layer forms optical waveguide on the array substrate and/or the optical film layers, and the photoelectric sensor is used for acquiring the optical waveguide to perform compensation of brightness on the light emitted by the luminescent layer according to data of the optical waveguide.Type: GrantFiled: October 25, 2021Date of Patent: February 4, 2025Assignee: BOE Technology Group Co., Ltd.Inventors: Xing Fan, Chao Kong, Xiangmin Wen
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Patent number: 12217719Abstract: The present application provides a pixel driving circuit and a display device. The pixel driving circuit includes a scanning signal line and a data signal line. A pixel driving circuit unit includes at least two cascaded units, wherein the pixel driving circuit unit is configured to change a connection number of cascaded units that are connected to the data signal line and a light emitting diode, to adjust a brightness of the light emitting diode so as to effectively improve gray level of displayed picture and display quality.Type: GrantFiled: December 31, 2020Date of Patent: February 4, 2025Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Yan Li
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Patent number: 12211407Abstract: Provided is a display panel, including: a storage module configured to store a first mapping relationship table, the first mapping relationship table showing correspondence between luminance accumulation amounts of each light emitting element in the display panel and luminance compensation gain values; an accumulation module configured to accumulate, when the display panel being powered on, luminance data of each light emitting element in real time to obtain a real-time accumulation amount of the luminance data; a main control module configured to search, according to the real-time accumulation amount of the luminance data, a corresponding luminance compensation gain value in the first mapping relationship table; calculate a real-time data signal for lighting each light emitting element according to the luminance compensation gain value and a real-time target luminance value of the light emitting element; light the light emitting element in real time according to the real-time data signal.Type: GrantFiled: April 29, 2022Date of Patent: January 28, 2025Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Song Meng, Min He
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Patent number: 12211424Abstract: A display panel driving circuit includes a scan driving circuit including a scan stage and a timing controller. The scan stage includes a first circuit connected to a first input node of receiving a first clock signal, a second circuit connected to a second input node of receiving a second clock signal, a third circuit connected to a third input node of receiving a carry signal, the first circuit, and the second circuit and connected to a first control node and a second control node, a pull-up transistor electrically connected to the first input node and an output node of outputting a scan signal and turned on/off by the first control node, and a pull-down transistor electrically connected to the output node and a low-level voltage line and turned on/off by the second control node.Type: GrantFiled: January 22, 2024Date of Patent: January 28, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Taehoon Kim, Sangan Kwon, Soon-Dong Kim, Geunjeong Park, Changnoh Yoon, Jaekeun Lim
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Patent number: 12211440Abstract: A starting signal providing module, a starting signal providing method and a splicing display device are provided. The starting signal providing module comprises a detection circuit, a plurality of signal generating circuits and a plurality of enabling circuits. The signal generating circuit is configured to generate and provide a feedback signal to the detecting circuit when a last-stage scan driving signal output terminal of a scan driving circuit in a corresponding display panel outputs a valid scan driving signal. The detection circuit is configured to provide an enabling control signal to enabling circuits corresponding to at least two signal generating circuits according to the feedback signals from at least two signal generating circuits. The enabling circuit is configured to control a starting signal to be supplied to a scan driving circuit included in a corresponding display panel upon receiving the enabling control signal.Type: GrantFiled: November 12, 2021Date of Patent: January 28, 2025Assignee: BOE Technology Group Co., Ltd.Inventors: Hualing Yang, Lina Liu, Wenxiu Zhu
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Patent number: 12211428Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write device, a drive device and a bias adjustment device. The data write device is configured to provide a data signal to the drive device. The bias adjustment device is configured to provide a bias adjustment signal to the drive device. The display panel further includes a drive circuit, the drive circuit is configured to receive a first drive signal and a second drive signal. In a case where the drive device includes a drive transistor being a PMOS transistor, the bias adjustment signal is same as the first drive signal, or, in a case where the drive device includes a drive transistor being an NMOS transistor, and the bias adjustment signal is same as the second drive signal.Type: GrantFiled: March 22, 2023Date of Patent: January 28, 2025Assignee: Xiamen Tiannma Micro-Electronics Co., Ltd.Inventors: Jieliang Li, Ping An
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Patent number: 12209745Abstract: The present disclosure provides a backlight module and a display device. The backlight module includes a substrate, a light-emitting layer, and a light refracting layer. The light-emitting layer is disposed on the substrate and includes multiple light-emitting units arranged at intervals. The light-emitting unit is configured to emit light. The light-refracting layer includes multiple first medium parts and multiple second medium parts, where the first medium part covers a surface of the light-emitting unit, and the second medium part is arranged between adjacent first medium parts. The first medium part has a first refractive index n1 for light emitted by the light-emitting unit, and the second medium part has a second refractive index n2 for the light emitted by the light-emitting unit, where n1>n2.Type: GrantFiled: July 6, 2023Date of Patent: January 28, 2025Assignee: HKC Corporation LimitedInventors: Hao Liu, Baohong Kang
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Patent number: 12211431Abstract: A display device may include: a first pixel coupled to a first scan line, a first data line, and a first sensing line; a second pixel coupled to the first scan line, a second data line, and a second sensing line; a first sensing channel corresponding to the first pixel and including a first sampling capacitor; and a second sensing channel corresponding to the second pixel and including a second sampling capacitor. During a first period, the first sensing channel may store a first sampling signal in the first sampling capacitor while the first sensing line is coupled to the first sensing channel, and the second sensing channel may store a second sampling signal in the second sampling capacitor while the second sensing line is disconnected from the second sensing channel.Type: GrantFiled: November 24, 2023Date of Patent: January 28, 2025Assignee: Samsung Display Co., Ltd.Inventor: Sung Hwan Kim
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Patent number: 12205521Abstract: The invention relates to various aspects of a ?-LED or a ?-LED array for augmented reality or lighting applications, in particular in the automotive field. The ?-LED is characterized by particularly small dimensions in the range of a few ?m.Type: GrantFiled: February 22, 2022Date of Patent: January 21, 2025Assignee: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Jens Richter, Kilian Regau, Patrick Hoerner
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Patent number: 12205531Abstract: An electronic device comprises a display and a controller. The controller is configured to provide a first frequency refresh rate to the display. The controller is also configured to generate a control signal configured to control emission of a light emitting diode of a display pixel of the display at a second frequency based on whether the first frequency refresh rate of the display is less than a predetermined threshold value.Type: GrantFiled: April 25, 2023Date of Patent: January 21, 2025Assignee: Apple Inc.Inventors: Chin-Wei Lin, Hung Sheng Lin, Vasudha Gupta, Shinya Ono, Tsung-Ting Tsai, Shyuan Yang
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Patent number: 12198641Abstract: An electronic device is provided. The electronic device includes an optical lens, a display module configured to display a screen through the optical lens, a sensor module configured to measure a temperature of the display module at one or more positions, and memory, and at least one processor. The instructions that, when executed by the at least one processor, cause the electronic device to control the display module to display a designated screen, obtain at least one temperature respectively corresponding to the one or more positions from the sensor module while displaying the designated screen, and based on the obtained at least one temperature, change a luminance of at least a part of the designated screen or change a display area of the display module based on the obtained at least one temperature.Type: GrantFiled: November 22, 2023Date of Patent: January 14, 2025Assignee: Samsung Electronics Co., Ltd.Inventors: Seungjoo Lee, Dongil Son, Seungnyun Kim, Jongmin Yoon, Gisoo Lim, Kyusik Choi
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Patent number: 12198625Abstract: The present inventive concept provides a display device including a pixel unit which includes pixels, a sensing unit connected to the pixels through sensing lines, a first power voltage generator connected to the pixels through a first power line and generating a first power voltage for driving the pixels, a second power voltage generator connected to the pixels through the first power line and generating a second power voltage for sensing the pixels, and a timing controller selectively controlling operations of the first power voltage generator and the second power voltage generator according to a driving method of the pixel unit, and a method driving the same.Type: GrantFiled: April 21, 2023Date of Patent: January 14, 2025Assignee: Samsung Display Co., Ltd.Inventors: Sang Hyun Lee, Dae Sik Lee, Keun Oh Kang, Si Duk Sung, Song Yi Han
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Patent number: 12197674Abstract: A touch detection drive circuit in an electronic device inputs a touch excitation signal to a touch electrode, and receives a detection signal of the touch electrode. An isolation power supply circuit receives the touch excitation signal and a primary power supply voltage; based on the touch excitation signal in a non-touch detection phase, short-circuits a first reference ground and a second reference ground, stores the primary power supply voltage, and transmits the primary power supply voltage to the touch detection drive circuit; and in a touch detection phase, disconnects the first reference ground from the second reference ground and discharges to the touch detection drive circuit.Type: GrantFiled: September 14, 2021Date of Patent: January 14, 2025Assignee: Huawei Technologies Co., Ltd.Inventors: Zhengyuan Hu, Fengxin Wang, Jiacong Zhang
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Patent number: 12198634Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a driving circuit, a light-emitting element, a first light-emitting control circuit, a first control circuit, a second control circuit, a third control circuit, a data writing-in circuit and an energy storage circuit. The first control circuit is configured to control to connect the first voltage line and a first end of the light-emitting element under the control of the first control signal; the second control circuit is configured to control to connect the reference voltage line and the second end of the light-emitting element under the control of a second control signal; the third control circuit is configured to control to connect the first end of the energy storage circuit and the control end of the driving circuit under the control of a third control signal.Type: GrantFiled: September 29, 2021Date of Patent: January 14, 2025Assignees: CHONGQING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Teng Chen, Dawei Shi, Wentao Wang, Tianlong Zhao, Liang Zhou, Shuaizhuo Liu, Chuanyong Li
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Patent number: 12198621Abstract: The present disclosure provides a pixel circuit, a driving method and a display device. The pixel circuit includes a first reset circuit and a driving circuit, the first reset circuit is respectively electrically connected to a first light emitting control line, a reset control line, a first reset voltage line and a first end of the driving circuit, and is configured to write a first reset voltage provided by the first reset voltage line into the first end of driving circuit under the control of a first light emitting control signal provided by the first light emitting control line and a reset control signal provided by the reset control line; the driving circuit is configured to connect the first end of the driving circuit and a second end of the driving circuit under the control of a potential of a control end of the driving circuit.Type: GrantFiled: June 23, 2021Date of Patent: January 14, 2025Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yao Huang, Tianyi Cheng
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Patent number: 12198632Abstract: A display device includes a pixel circuit configured to generate a driving current based on a data signal supplied to a data line, a first light-emitting stage configured to emit light based on the driving current, and including first light-emitting elements connected in parallel, a detector configured to detect voltages of respective ends of the first light-emitting stage, and a current compensator configured to compensate for a current flowing through the first light-emitting stage based on a first voltage difference between the voltages of the respective ends of the first light-emitting stage.Type: GrantFiled: November 14, 2023Date of Patent: January 14, 2025Assignee: Samsung Display Co., Ltd.Inventors: Jin Won Jang, Seung Won Kuk, Myung Chul Kim