Patents by Inventor Dandan ZHOU
Dandan ZHOU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250124841Abstract: A driving circuit includes a pull-up node control circuit, a pull-down node control circuit and an output circuit; the pull-up node control circuit controls a potential of the pull-up node under the control of an input signal and a reset signal; the output circuit controls the output terminal to output a signal under the control of the potential of the pull-up node and the potential of the pull-down node; a channel length of at least one transistor among at least some transistors included in the output circuit, at least some transistors whose gate electrodes are electrically connected to the input terminal included in the pull-up node control circuit, and at least some transistors whose gate electrodes are electrically connected to the reset terminal included in the pull-up node control circuit is greater than a channel length of another transistor included in the driving circuit.Type: ApplicationFiled: March 31, 2023Publication date: April 17, 2025Inventors: Can YUAN, Yongqian LI, Miao LIU, Dandan ZHOU, Cheng XU
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Publication number: 20250126965Abstract: The present disclosure provides an organic light-emitting diode, a display panel and a display device, relating to the field of display technologies. The organic light-emitting diode includes a first electrode, at least two emission layers, an optical modulation layer, and a second electrode. A thickness of the optical modulation layer has a relatively bigger range. Therefore, in the case that the thicknesses of other film layers between the first electrode and the second electrode vary, an optical modulation layer having a different thickness can be provided to adjust the microcavity length of the organic light-emitting diode, thereby ensuring the optical performance of the organic light-emitting diode and the display effect of the display panel.Type: ApplicationFiled: March 16, 2023Publication date: April 17, 2025Applicants: BOE Technology Group Co., Ltd., Hefei BOE Joint Technology Co., Ltd.Inventors: Xinyu LI, Xinxin WANG, Xiang WAN, Cheng XU, Dandan ZHOU, Ningning WANG
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Publication number: 20250120251Abstract: A light emitting diode, a display substrate and a display device. In the light emitting diode, the first light emitting structure includes a first hole transport layer, a first light emitting layer and a first electron transport layer; the second light emitting structure includes a second hole transport layer and a second light emitting layer, an absolute value of a first energy level difference between a LUMO energy level of the first light emitting layer and a LUMO energy level of the first electron transport layer is less than an absolute value of a second energy level difference between a HOMO energy level of the second light emitting layer and a HOMO energy level of the second hole transport layer.Type: ApplicationFiled: November 30, 2022Publication date: April 10, 2025Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Changyen WU, Juanjuan YOU, Wei QUAN, Cheng XU, Dandan ZHOU
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Publication number: 20250104626Abstract: A display substrate and a display device. The display substrate includes a driving circuit layer, a first scanning line and a second scanning line. The driving circuit layer includes pixel units arranged in an array form, each pixel unit includes a plurality of sub-pixels, at least one sub-pixel includes a pixel driving circuit, the pixel driving circuit includes a first transistor and a second transistor, an active pattern of the first transistor includes a first channel region, an active pattern of the second transistor includes a second channel region, the first channel region is located on a side of the first scanning line away from the second scanning line, and the second channel region is located on a side of the second scanning line away from the first scanning line.Type: ApplicationFiled: October 28, 2022Publication date: March 27, 2025Applicants: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Can YUAN, Yongqian LI, Zhidong YUAN, Cheng XU, Dacheng ZHANG, Dandan ZHOU, Liu WU, Luke DING, Xiuting LIU
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Publication number: 20250104646Abstract: A driving circuit, a driving module, a driving method, a display substrate and a display device are provided. The driving circuit includes a first leakage prevention circuit, an output circuit and a first control node control circuit; the first leakage prevention circuit is configured to control to connect or disconnect the first control node, the first node and the first intermediate node under the control of a first voltage signal provided by the first voltage line according to a potential of the first intermediate node, control to connect or disconnect the first intermediate node and the second voltage line under the control of the potential of the first node, and control to disconnect the first control node and the first node when the first intermediate node and the second voltage line is connected.Type: ApplicationFiled: January 13, 2023Publication date: March 27, 2025Inventors: Chengyuan LUO, Pan XU, Ying HAN, Xing ZHANG, Donghui ZHAO, Guangshuang LV, Cheng XU, Xing YAO, Dandan ZHOU, Miao LIU
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Publication number: 20250107317Abstract: Provided is an organic light-emitting diode, including a first electrode, a second electrode, at least two emission layers, a first hole transport layer and a second hole transport layer. A color of a mixture of light emitted from the at least two emission layers is white. The at least two emission layers includes a first emission layer and a second emission layer. The first electrode, the first emission layer, the first hole transport layer, the second hole transport layer, the second emission layer, and the second electrode are disposed on a base substrate and are sequentially laminated in a direction going away from the base substrate. A thickness of the second hole transport layer is greater than a first thickness threshold. A ratio of the thickness of the second hole transport layer to a thickness of the first hole transport layer ranges from 15 to 40.Type: ApplicationFiled: March 16, 2023Publication date: March 27, 2025Applicants: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Xinyu LI, Xinxin WANG, Xiang WAN, Cheng XU, Dandan ZHOU, Ningning WANG
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Publication number: 20250098446Abstract: A display substrate and driving method thereof, a display device are provided. The display substrate includes: a base substrate, and a plurality of repeating units and a plurality of data lines on the base substrate, the plurality of repeating units are divided into plurality of repeating unit columns; each repeating unit includes a plurality of subpixels, the subpixel includes a subpixel driving circuit, the subpixel driving circuit includes a data writing transistor, a writing control transistor and a driving transistor; the first electrode of the data writing transistor is coupled to the corresponding data line, the second electrode of the data writing transistor is coupled to the first electrode of the writing control transistor, and the second electrode of the writing control transistor is coupled to the gate of the driving transistor.Type: ApplicationFiled: October 28, 2022Publication date: March 20, 2025Applicants: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Can Yuan, Liu Wu, Zhidong Yuan, Luke Ding, Yongqian Li, Cheng Xu, Dandan Zhou, Dacheng Zhang
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Publication number: 20250095536Abstract: Provided is a pixel drive circuit. The pixel drive circuit includes a plurality of scan drive circuits transmitting gate drive signals to pixels, a plurality of emission drive circuits transmitting emission control signals to the pixels, a plurality of compensation drive circuits transmitting compensation signals to the pixels, and a plurality of reset drive circuits transmitting reset signals to the pixels, which are all cascaded in a pixel column direction. In addition, the scan drive circuit, the emission drive circuit, the compensation drive circuit, and the reset drive circuit corresponding to the same row of pixels are arranged sequentially along a pixel row direction, the scan drive circuit being disposed farthest away from the pixels. Moreover, among signal lines coupled to the pixel drive circuit, a plurality of signal lines is overlapped with each other, and cutouts are provided at the overlapping portions of the plurality of signal lines.Type: ApplicationFiled: November 23, 2022Publication date: March 20, 2025Applicant: BOE Technology Group Co., Ltd.Inventors: Donghui ZHAO, Pan XU, Ying HAN, Xing ZHANG, Chengyuan LUO, Guangshuang LV, Xing YAO, Dandan ZHOU, Miao LIU
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Publication number: 20250098479Abstract: A display substrate is provided. The display substrate includes a planarization layer; a light emitting element on the planarization layer, including a first electrode, an organic layer on the first electrode, and a second electrode on a side of the organic layer away from the first electrode; an auxiliary electrode in a layer different from the second electrode; one or more first connecting structures electrically connecting the auxiliary electrode with the second electrode, respectively; and one or more second connecting structures electrically connecting the auxiliary electrode with the second electrode, respectively; wherein a respective first connecting structure of the one or more first connecting structures includes a conductive channel including a sintered conductive material; and the conductive channel is absent in the one or more second connecting structures.Type: ApplicationFiled: February 28, 2023Publication date: March 20, 2025Applicants: Hefei BOE Joint Technology Co.,Ltd., BOE Technology Group Co., Ltd.Inventors: Can Yuan, Yongqian Li, Cheng Xu, Dandan Zhou, Ning Liu
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Publication number: 20250098483Abstract: Provided is a display panel. The display panel includes a base substrate, a first electrode, a light-emitting layer, a protective layer, and a second electrode which are sequentially laminated on a side of the base substrate. A side of the light-emitting layer away from the base substrate is embedded with a target particle, and a gap in communication with the side of the light-emitting layer away from the base substrate is defined between the light-emitting layer and the target particle. The protective layer at least includes a first portion insulated from both the first electrode and the second electrode. The first portion fills the gap.Type: ApplicationFiled: April 17, 2023Publication date: March 20, 2025Applicants: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd., Beijing BOE Technology Development Co., Ltd.Inventors: Xinxin WANG, Xiang WAN, Xinyu LI, Cheng XU, Dandan ZHOU, Ningning WANG
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Publication number: 20250098447Abstract: A display substrate and a display device are provided. The display substrate includes: a base substrate, data lines and sub-pixels on the base substrate. The sub-pixels include a sub-pixel driving circuit and a light-emitting element including a first electrode. The sub-pixel driving circuit includes a driving transistor and a data writing transistor having a first electrode coupled to the data line through a second connection structure. A second electrode of the driving transistor is coupled to the first electrode through a first connection structure. The first and second connection structures are in a non-aperture region of the sub-pixel. Orthographic projections of the first and second connection structures onto the base substrate are arranged along a first direction. An orthographic projection of the second connection structure onto the base substrate and an aperture region of the sub-pixel are along a second direction which intersects the first direction.Type: ApplicationFiled: October 28, 2022Publication date: March 20, 2025Applicants: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Can Yuan, Zhidong Yuan, Liu Wu, Luke Ding, Yongqian Li, Cheng Xu, Dandan Zhou, Dacheng Zhang
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Publication number: 20250089442Abstract: A display panel is provided, including light emitting devices arranged in an array, and each light emitting devices includes: a first electrode; a first light emitting layer, a second light emitting layer, a third light emitting layer, a fourth light emitting layer, a fifth light emitting layer, and a second electrode, which are all arranged sequentially. A microcavity is formed between the first electrode and the second electrode, four light emitting layers among the first light emitting layer, the second light emitting layer, the third light emitting layer, the fourth light emitting layer and the fifth light emitting layer emit light having a first wavelength, and a remaining light emitting layer, except for the four light emitting layers emitting the light having the first wavelength, emits light having a second wavelength. The first wavelength is smaller than the second wavelength.Type: ApplicationFiled: November 29, 2022Publication date: March 13, 2025Inventors: Linlin Wang, Dandan Zhou, Cheng Xu
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Publication number: 20250087155Abstract: Provided are a display substrate and a driving method thereof. The display substrate includes a first storage circuit and a second storage circuit, a first terminal of the first storage circuit being electrically connected to the control terminal of the driving circuit, a second terminal of the first storage circuit being electrically connected to the first terminal of the driving circuit, and the first storage circuit being configured to store the data signal; a first terminal of the second storage circuit being electrically connected to the first electrode of the light-emitting element and a second terminal of the second storage circuit being electrically connected to a second electrode of the light-emitting element.Type: ApplicationFiled: December 23, 2022Publication date: March 13, 2025Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Pan XU, Miao LIU, Xing YAO, Dandan ZHOU, Cheng XU
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Publication number: 20250089513Abstract: A display substrate, a manufacturing method therefor, and a display device. The display substrate includes: a base substrate; a light-emitting substrate disposed on the base substrate and the light-emitting substrate being configured to emit incident light; a color conversion layer disposed at a side of the light emitting substrate away from the base substrate and the color conversion layer being configured to convert the incident light emitted from the light emitting substrate into light of a specific color; a selective reflection layer disposed on a side of the color conversion layer away from the base substrate and the selective reflection layer being configured to reflect incident light not converted by the color conversion layer to the color conversion layer and to transmit light of the specific color converted by the color conversion layer.Type: ApplicationFiled: February 28, 2023Publication date: March 13, 2025Inventors: Ying CUI, Donghui YU, Cheng XU, Dandan ZHOU
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Publication number: 20250089365Abstract: A display substrate including a base substrate and a driving module arranged on the base substrate, the driving module includes at least one driving unit, and the driving unit includes N stages of driving circuits; N is a positive integer, n is a positive integer less than or equal to N; the nth stage of driving circuit includes a (2n?1)th stage of output circuit, a 2nth stage of output circuit and a first node control circuit; the first node is electrically connected to the (2n?1)th stage of output circuit and the 2nth stage of output circuit respectively through a first connection line; the driving module also includes a scanning line; there are at least two mutually independent overlapping portions between the orthographic projection of the first connection line on the base substrate and the orthographic projection of the scanning line on the base substrate.Type: ApplicationFiled: July 28, 2022Publication date: March 13, 2025Applicants: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Can YUAN, Luke DING, Zhidong YUAN, Liu WU, Yongqian LI, Dacheng ZHANG, Cheng XU, Dandan ZHOU
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Publication number: 20250081735Abstract: Provided are a display panel and a display device. The display panel includes: a base substrate, including a plurality of light-emitting regions and a non-light-emitting region located between adjacent light-emitting regions; a pixel-defining layer, located on the base substrate and having a main body part and a plurality of openings defined by the main body part, each of the plurality openings being configured to define at least one of the plurality of light-emitting regions; a first structural layer at least located in one light-emitting region; a second structural layer at least located in the non-light-emitting region; the first structural layer has a first refractive index, the second structural layer has a second refractive index, and the first refractive index is greater than the second refractive index.Type: ApplicationFiled: February 9, 2023Publication date: March 6, 2025Applicant: BOE Technology Group Co., Ltd.Inventors: Donghui Yu, Cheng Xu, Dandan Zhou
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Publication number: 20250078762Abstract: A grid-driving-circuit array is applied to a display panel, the display panel is delimited into a plurality of active areas, and each of the active areas includes multiple rows of pixel units and multiple rows of grid lines. The multiple groups of grid driving units supply grid driving signals to the plurality of active areas, and each of the groups of grid driving units includes one or more grid driving circuits. The one or more grid driving circuits are configured for supplying the grid driving signals to the grid lines within the active area corresponding to the one or more grid driving circuits. One or more multiplexers, wherein each of the multiplexers includes a plurality of frame-starting-up-signal outputting units, each of the frame-starting-up-signal outputting units of the multiplexer is configured for supplying a frame starting-up signal to one of the grid driving circuits.Type: ApplicationFiled: March 31, 2023Publication date: March 6, 2025Applicant: BOE Technology Group Co., Ltd.Inventors: Donghui Zhao, Pan Xu, Ying Han, Xing Zhang, Chengyuan Luo, Guangshuang Lv, Cheng Xu, Hongli Wang, Tong Wu, Dandan Zhou
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Publication number: 20250029558Abstract: A driving circuit, a driving method and a display device are provided. The driving circuit includes a first control node control circuit, a second control node control circuit, a first node control circuit and a second node control circuit, wherein, the first control node control circuit is configured to control a potential of the first control node; the second control node control circuit is configured to control a potential of the second control node; the first node control circuit is configured to control a potential of the first node; the second node control circuit is electrically connected to the second control node, a first clock signal terminal and a second node respectively, and is configured to control to connect the first clock signal terminal and the second node under the control of the potential of the second control node.Type: ApplicationFiled: November 30, 2022Publication date: January 23, 2025Inventors: Xing ZHANG, Pan XU, Donghui ZHAO, Ying HAN, Chengyuan LUO, Guangshuang LV, Cheng XU, Miao LIU, Dandan ZHOU
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Publication number: 20240373674Abstract: Provided are a display substrate and a display device. The display substrate includes a base substrate and pixel units each including a pixel driving circuit at least including a first and a second thin film transistors; a first semiconductor layer, a first conductive layer, a second conductive layer and a second semiconductor layer are sequentially arranged on the base substrate; the first semiconductor layer includes a first active layer, including a first source region, of the first thin film transistor; the first conductive layer includes a first gate of the first thin film transistor; the second conductive layer includes a first transfer electrode electrically connected to the first source region; the second semiconductor layer includes a second active layer, which includes a second source region, of the second thin film transistor; the second source region is electrically connected to the first transfer electrode.Type: ApplicationFiled: June 29, 2022Publication date: November 7, 2024Inventors: Wei LIU, Meng ZHAO, Cheng XU, Dandan ZHOU, Renquan GU, Jianhua DU, Chaolu WANG
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Publication number: 20240371887Abstract: A thin film transistor includes a first active layer, a second active layer, a first electrode, a second electrode and a third electrode. The first active layer includes a first surface away from a substrate. The second active layer includes a second surface in contact with the first surface. The first electrode, the first active layer and the second active layer have an overlapping region. The second electrode, the first active layer and the second active layer have an overlapping region. The third electrode, the first active layer and the second active layer have an overlapping region, and the third electrode is opposite to the second electrode. The second surface is located within the first surface, and a distance between at least part of a border of the second surface and a border of the first surface is less than or equal to 0.5 ?m.Type: ApplicationFiled: July 16, 2024Publication date: November 7, 2024Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yuhang LU, Fengjuan LIU, Hehe HU, Zhengliang LI, Ce NING, Guangcai YUAN, Dandan ZHOU, Cheng XU