Patents by Inventor Hongfei Cheng
Hongfei Cheng 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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Patent number: 11825694Abstract: The present disclosure relates to an array substrate and a method for manufacturing the same. The array substrate includes a substrate, a thin film transistor located on the substrate, a light emitting device located on the substrate and spaced apart from the thin film transistor in a direction parallel to a surface of the substrate, and a light shielding portion located between the thin film transistor and the light emitting device for shielding a light from the light emitting device. The light shielding portion surrounds the light emitting layer.Type: GrantFiled: September 14, 2018Date of Patent: November 21, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Hongfei Cheng, Yuxin Zhang
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Patent number: 11822196Abstract: An array substrate includes at least one driving electrode region and at least one sensing electrode region which are alternately arranged along a row direction and are disconnected from each other, each driving electrode region and each sensing electrode region include one first common electrode and one second common electrode respectively, at least one driving electrode line continuously passes through the driving electrode region and the sensing electrode region alternately arranged along the row direction. The first common electrode in the driving electrode region is connected to the driving electrode line through at least one first through hole, the second common electrode in the sensing electrode region is disconnected from the driving electrode line.Type: GrantFiled: July 25, 2019Date of Patent: November 21, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Hongfei Cheng, Pan Li
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Patent number: 11810922Abstract: An array substrate and a display device are disclosed.Type: GrantFiled: April 12, 2021Date of Patent: November 7, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jianbo Xian, Hongfei Cheng, Yong Qiao, Yongda Ma
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Patent number: 11803088Abstract: The disclosure relates to the technical field of display, and discloses an electrode structure, a capacitor, a GOA circuit, an array substrate, a display panel and a display device, wherein the electrode structure includes a body and a first opening formed in the body, the first opening has a half-enclosed shape, and a part, enclosed by the first opening, of the body has a tip structure. Each of the capacitor, the GOA circuit, the array substrate, the display panel and the display device includes the above-mentioned electrode structure.Type: GrantFiled: March 26, 2020Date of Patent: October 31, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Hongfei Cheng, Jianbo Xian, Hui Li
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Publication number: 20230343287Abstract: Embodiments of the present disclosure provide a pixel circuitry, a drive method thereof, an array substrate and a display panel. The pixel circuitry may comprise a drive circuit, a data write circuit, an initialization circuit, a first light emission control circuit, a first storage circuit, a second storage circuit and a second light emission control circuit. The drive circuit may be coupled to a first node, a second node and a third node, and may provide a drive current to a light emitting device. The first storage circuit may store a voltage difference between the first voltage signal terminal and the second node. The second storage circuit may store a voltage difference between the first node and the second node.Type: ApplicationFiled: February 7, 2021Publication date: October 26, 2023Inventors: Hongfei CHENG, Xueguang HAO
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Patent number: 11783743Abstract: A shifting register, a driving method thereof, a driving circuit and a display device are provided. The shifting register includes a control circuit (10), a first output circuit (20), a second output circuit (30) and a first switching transistor (T1). Shifting output of signals may be realized through interaction of all of the circuits. Moreover, an influence of a leak current on a signal of a second end of the first switching transistor is reduced by setting the first switching transistor (T1) to isolate the second output circuit (30) and a second node (N2).Type: GrantFiled: December 28, 2020Date of Patent: October 10, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.Inventor: Hongfei Cheng
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Publication number: 20230271919Abstract: The present invention belongs to the field of agricultural acaricides, and particularly relates to a substituted phenyl sulfide compound and an application thereof. The substituted phenyl sulfide compound is as represented in general formula I. Definitions of substituted groups in the formula are given in the description. The compound of the general formula I has excellent acaricidal activity and can be used for preventing and controlling various mites.Type: ApplicationFiled: July 13, 2021Publication date: August 31, 2023Inventors: Libao XU, Hongfei WU, Xiuhui CHANG, Haibo YU, Yuquan SONG, Jingbo XU, Chunxiao GUO, Xueming CHENG, Ningning SUN
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Publication number: 20230236461Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a base substrate, and a transistor, an anti-static wire, a first anti-static resistor and a first ground bonding pad on the base substrate, wherein a first terminal of the first anti-static resistor is electrically connected to a first end of the anti-static wire, a second terminal of the first anti-static resistor is electrically connected to the first ground bonding pad, and the first anti-static resistor is at a different layer from a layer at which the anti-static wire is located and a layer at which the first ground bonding pad is located, and is at a same layer as an active layer of the resistor.Type: ApplicationFiled: March 31, 2023Publication date: July 27, 2023Inventors: Hongfei CHENG, Hui LI
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Patent number: 11699761Abstract: The present disclosure provides a thin film transistor and a fabrication method thereof, an array substrate and a fabrication method thereof, and a display panel. The method for fabricating a thin film transistor includes: forming an active layer including a first region, a second region and a third region on a substrate; forming a gate insulating layer on a side of the active layer away from the substrate; forming a gate electrode on a side of the gate insulating layer away from the active layer; and ion-implanting the active layer from a side of the gate electrode away from the active layer, so that the first region is formed into a heavily doped region, the second region is formed into a lightly doped region, and the third region is formed into an active region.Type: GrantFiled: November 5, 2020Date of Patent: July 11, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventor: Hongfei Cheng
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Patent number: 11688830Abstract: The present disclosure provides a display substrate which includes: a plurality of pixel units, at least one of which includes a light emitting diode and a drive circuit. The light emitting diode includes a cathode; the display substrate further includes an auxiliary electrode layer including at least one auxiliary electrode. The auxiliary electrode is disposed in at least one of the pixel units. The auxiliary electrode is electrically connected with the cathode of the light emitting diode which is located in the same pixel unit as the pixel unit that the auxiliary electrode is located in, and the auxiliary electrode covers at least a portion of the drive circuit in the pixel unit that the auxiliary electrode is located in. The auxiliary electrode is made of an opaque conductive material, so as to block light irradiated at the portion of the drive circuit that is covered by the auxiliary electrode.Type: GrantFiled: September 21, 2017Date of Patent: June 27, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Hongfei Cheng, Yuxin Zhang
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Patent number: 11662631Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a base substrate, and a transistor, an anti-static wire, a first anti-static resistor and a first ground bonding pad on the base substrate, wherein a first terminal of the first anti-static resistor is electrically connected to a first end of the anti-static wire, a second terminal of the first anti-static resistor is electrically connected to the first ground bonding pad, and the first anti-static resistor is at a different layer from a layer at which the anti-static wire is located and a layer at which the first ground bonding pad is located, and is at a same layer as an active layer of the resistor.Type: GrantFiled: May 20, 2020Date of Patent: May 30, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Hongfei Cheng, Hui Li
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Patent number: 11658186Abstract: The present disclosure provides an array substrate, including: a base, and at least one lead structure disposed on the base. The lead structure includes a first conductive structure and a conductive semiconductor structure, and an orthographic projection of the conductive semiconductor structure on the base at least partially overlaps an orthographic projection of the first conductive structure on the base.Type: GrantFiled: August 1, 2019Date of Patent: May 23, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Hongfei Cheng
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Publication number: 20230138001Abstract: A display panel and a display device are provided. The display panel includes a plurality of pixel units, each pixel unit includes a pixel circuit and a light-emitting element, the pixel circuit is configured to drive the light-emitting element, the pixel circuit includes a driving transistor, the plurality of pixel units include a first pixel unit and a second pixel unit, the first pixel unit is configured to emit light of a first color, the second pixel unit is configured to emit light of a second color, the driving transistor of the pixel circuit of the first pixel unit includes a first channel, and the driving transistor of the pixel circuit of the second pixel unit includes a second channel, a width-to-length ratio of the first channel is greater than that of the second channel, and a shape of the first channel is different from that of the second channel.Type: ApplicationFiled: November 3, 2021Publication date: May 4, 2023Applicants: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xueguang HAO, Yongda MA, Hongfei CHENG
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Publication number: 20230122041Abstract: The disclosure relates to the technical field of display, and discloses an electrode structure, a capacitor, a GOA circuit, an array substrate, a display panel and a display device, wherein the electrode structure includes a body and a first opening formed in the body, the first opening has a half-enclosed shape, and a part, enclosed by the first opening, of the body has a tip structure. Each of the capacitor, the GOA circuit, the array substrate, the display panel and the display device includes the above-mentioned electrode structure. By using the above-mentioned electrode structure, electrostatic charge accumulated in the body of the electrode structure can be discharged inside the electrode structure, thus avoiding electrostatic charge accumulation in the electrode structure and preventing the electrode structure from discharging to surrounding circuits so as to avoid damaging the surrounding circuits.Type: ApplicationFiled: March 26, 2020Publication date: April 20, 2023Inventors: Hongfei CHENG, Jianbo XIAN, Hui LI
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Patent number: 11631356Abstract: A display panel and a display device are provided, the display panel includes a gate driving circuit, a first pixel module, and a second pixel module, the first pixel module includes a first pixel circuit, and the second pixel module includes a second pixel circuit; the gate driving circuit respectively provides corresponding gate driving signals for the first pixel circuit and the second pixel circuit; in the first display region, the number of columns of the pixel circuit included by the first pixel module is greater than the maximum number of columns of the pixel circuit included by the second pixel module in the second display region; the display panel further includes a loading structure arranged in a non-display region; the load structure is electrically connected to the gate wiring; the gate wiring is wiring between the gate driving circuit and the second pixel circuit for providing the corresponding gate driving signals to the second pixel circuit.Type: GrantFiled: December 20, 2021Date of Patent: April 18, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Xueguang Hao, Hongfei Cheng, Yongda Ma
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Patent number: 11619849Abstract: An array substrate includes a base substrate; a data line located on the base substrate; a conductive shield layer located on a side of the data line facing away from the base substrate; a pixel electrode located on a side of the data line facing away from the base substrate; and a black matrix located on a side of the conductive shield layer facing away from the data line. The conductive shield layer is not in contact with the pixel electrode and the data line. Each of the conductive shield layer and the black matrix at least partially overlaps the data line in a direction perpendicular to the base substrate.Type: GrantFiled: August 16, 2018Date of Patent: April 4, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Hongfei Cheng
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Publication number: 20230096411Abstract: Disclosed are an OLED display panel and a display device. The OLED display panel includes a substrate, a plurality of light emitting components arranged in an array, and a light resistance structure between the light emitting components. The light resistance structure prevents the reflected light of the emergent light from the light emitting components, from emitting out from one side of the substrate between the light emitting components.Type: ApplicationFiled: April 11, 2020Publication date: March 30, 2023Inventors: Xueguang HAO, Yong QIAO, Xinyin WU, Hongfei CHENG
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Publication number: 20230087495Abstract: An array substrate includes at least one driving electrode region and at least one sensing electrode region which are alternately arranged along a row direction and are disconnected from each other, each driving electrode region and each sensing electrode region include one first common electrode and one second common electrode respectively, at least one driving electrode line continuously passes through the driving electrode region and the sensing electrode region alternately arranged along the row direction. The first common electrode in the driving electrode region is connected to the driving electrode line through at least one first through hole, the second common electrode in the sensing electrode region is disconnected from the driving electrode line.Type: ApplicationFiled: July 25, 2019Publication date: March 23, 2023Inventors: Hongfei CHENG, Pan LI
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Patent number: 11594191Abstract: The present disclosure relates to the field of display technologies, and provides a gamma circuit. The gamma circuit includes: a plurality of positive gamma voltage output terminals, a plurality of negative gamma voltage output terminals in one-to-one correspondence with the plurality of positive gamma voltage output terminals, and a plurality of voltage conversion circuits. Each of the voltage conversion circuits is configured to output a negative gamma reference voltage to the negative gamma voltage output terminal based on a positive gamma reference voltage output by the positive gamma voltage output terminal corresponding to the negative gamma voltage output terminal.Type: GrantFiled: December 20, 2021Date of Patent: February 28, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology GroUp Co., Ltd.Inventors: Xueguang Hao, Yongda Ma, Hongfei Cheng
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Patent number: 11569329Abstract: The present disclosure discloses an array substrate and a detection method therefor, a display panel, and a display device. The array substrate includes: a base substrate, wherein the base substrate has a display area and a peripheral area surrounding the display area; a plurality of sub-pixel units, wherein the plurality of sub-pixel units are arrayed in the display area; a plurality of data lines, wherein the data lines are electrically connected to the sub-pixel units in corresponding columns; at least one first switching transistor, wherein the first switching transistor is located at a first side of the peripheral area, a drain of the first switching transistor is electrically connected to one of the data lines, and the data line connected to the drain of the first switching transistor is a first data line; a gate control line; and at least one detection line.Type: GrantFiled: May 30, 2019Date of Patent: January 31, 2023Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Hongfei Cheng, Xueguang Hao