Patents by Inventor Yongfu Diao
Yongfu Diao 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: 11974465Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: GrantFiled: April 3, 2023Date of Patent: April 30, 2024Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY. GROUP CO., LTD.Inventors: Xin Mou, Yongfu Diao
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Patent number: 11968862Abstract: A display substrate and a display device are provided. The display substrate includes a base and subpixels. The subpixel includes: a data line pattern; a power source signal line pattern including a portion extending in the first direction; and a subpixel driving circuitry. The subpixel driving circuitry includes two switching transistors, a driving transistor, and a storage capacitor. First and second electrode plates of the storage capacitor are coupled to a gate electrode of the driving transistor and the power source signal line pattern respectively. Second electrodes of the two switching transistors are coupled to a first electrode of the driving transistor. An orthogonal projection of the second electrode of at least one of the switching transistors onto the base at least partially overlaps an orthogonal projection of the power source signal line pattern onto the base, and at least partially overlaps an orthogonal projection of the second electrode plate of the storage capacitor onto the base.Type: GrantFiled: November 27, 2020Date of Patent: April 23, 2024Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yongfu Diao, Chenyu Chen
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Patent number: 11937459Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: GrantFiled: April 3, 2023Date of Patent: March 19, 2024Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY. GROUP CO., LTD.Inventors: Xin Mou, Yongfu Diao
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Patent number: 11783782Abstract: The present disclosure provides a display substrate, including a display area and a peripheral area, where N pixel unit groups are arranged in the display area, and each pixel unit group is provided with a gate line, a first reset signal line and a second reset signal line; a driving module is arranged in the peripheral area and includes at least two driving circuits, at least two operating signal line groups are further arranged in the peripheral area, the driving circuits and the operating signal line groups are alternately arranged the at least two driving circuits include a gate driving circuit and a reset driving circuit provided with N second signal output terminals the ith second signal output terminal is coupled to the second reset signal line configured for the ith pixel unit group and the first reset signal line configured for the (i+1)th pixel unit group.Type: GrantFiled: November 1, 2019Date of Patent: October 10, 2023Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Wenkang Wang, Yongfu Diao, Zhongliu Yang, Chenyu Chen
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Publication number: 20230292552Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: ApplicationFiled: April 3, 2023Publication date: September 14, 2023Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xin MOU, Yongfu DIAO
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Publication number: 20230274700Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and sub-pixels on the base substrate, a sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a first electrode, a light emitting layer and a second electrode which is electrically connected to the pixel circuit. The sub-pixels include first color sub-pixels, second color sub-pixels and third color sub-pixels, current efficiency of a first color sub-pixel is different from that of a second color sub-pixel. The display substrate includes a source-drain metal layer which includes a first power signal line, the display substrate includes a second power signal line and reset power signal lines, the reset power signal lines include a first reset power signal line and a second reset power signal line which are electrically connected to the pixel circuit.Type: ApplicationFiled: March 21, 2023Publication date: August 31, 2023Inventors: Xin MOU, Yongfu Diao
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Patent number: 11653530Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: GrantFiled: January 14, 2022Date of Patent: May 16, 2023Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xin Mou, Yongfu Diao
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Patent number: 11636809Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and sub-pixels on the base substrate, a sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a first electrode, a light emitting layer and a second electrode which are stacked, the second electrode is electrically connected to the pixel circuit. The display substrate further includes an active semiconductor layer, a first conductive layer, a second conductive layer, a source-drain metal layer, and a third conductive layer, the source-drain metal layer includes a first power signal line, and the third conductive layer includes a second power signal line; the display substrate further includes reset power signal lines, the reset power signal lines include a first reset power signal line and a second reset power signal line which are electrically connected to the pixel circuit.Type: GrantFiled: October 20, 2021Date of Patent: April 25, 2023Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xin Mou, Yongfu Diao
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Publication number: 20230107029Abstract: The present disclosure provides a display substrate, including a display area and a peripheral area, where N pixel unit groups are arranged in the display area, and each pixel unit group is provided with a gate line, a first reset signal line and a second reset signal line; a driving module is arranged in the peripheral area and includes at least two driving circuits, at least two operating signal line groups are further arranged in the peripheral area, the driving circuits and the operating signal line groups are alternately arranged the at least two driving circuits include a gate driving circuit and a reset driving circuit provided with N second signal output terminals the ith second signal output terminal is coupled to the second reset signal line configured for the ith pixel unit group and the first reset signal line configured for the (i+1)th pixel unit group.Type: ApplicationFiled: November 1, 2019Publication date: April 6, 2023Inventors: Wenkang WANG, Yongfu DIAO, Zhongliu YANG, Chenyu CHEN
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Publication number: 20220399417Abstract: An array substrate and a manufacturing method therefor, an organic light emitting diode display device and a display substrate are provided. The array substrate includes: a base substrate and a first color sub-pixel and a second color sub-pixel on the base substrate. The first color sub-pixel includes a first driving transistor, the second color sub-pixel includes a second driving transistor, and a channel width-length ratio of the first driving transistor is greater than a channel width-length ratio of the second driving transistor.Type: ApplicationFiled: November 29, 2019Publication date: December 15, 2022Inventors: Xin MOU, Yongfu DIAO
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Patent number: 11469291Abstract: A display substrate includes a substrate and a plurality of sub-pixels arranged in an array on the substrate. The sub-pixel includes: a data line pattern extending along a first direction; a power signal line pattern, the power signal line pattern including a portion extending along the first direction: and a sub-pixel driving circuit. The sub-pixel driving circuit includes two switching transistors, a driving transistor, and a storage capacitor; a first/second electrode plate of the storage capacitor is coupled to a gate electrode of the driving transistor/ the power signal line pattern, second electrodes of the two switching transistors are both coupled to a first electrode of the driving transistor, and orthographic projection of a second electrode of at least one of the two switching transistors on the substrate at least partially overlaps orthographic projection of the power signal line pattern or the second electrode plate on the substrate.Type: GrantFiled: November 29, 2019Date of Patent: October 11, 2022Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yongfu Diao, Chenyu Chen
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Publication number: 20220140039Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: ApplicationFiled: January 14, 2022Publication date: May 5, 2022Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xin MOU, Yongfu DIAO
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Patent number: 11296171Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: GrantFiled: November 27, 2020Date of Patent: April 5, 2022Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xin Mou, Yongfu Diao
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Publication number: 20220044636Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and sub-pixels on the base substrate, a sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a first electrode, a light emitting layer and a second electrode which are stacked, the second electrode is electrically connected to the pixel circuit. The display substrate further includes an active semiconductor layer, a first conductive layer, a second conductive layer, a source-drain metal layer, and a third conductive layer, the source-drain metal layer includes a first power signal line, and the third conductive layer includes a second power signal line; the display substrate further includes reset power signal lines, the reset power signal lines include a first reset power signal line and a second reset power signal line which are electrically connected to the pixel circuit.Type: ApplicationFiled: October 20, 2021Publication date: February 10, 2022Inventors: Xin Mou, Yongfu Diao
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Patent number: 11232755Abstract: A display substrate and a manufacturing method therefor, and a display device are provided. The display substrate includes a base substrate, a plurality of sub-pixels, a plurality of data lines, a plurality of data lead lines, at least one group of contact pads, and a first insulation layer. The base substrate includes a display region and a bonding region; the data lines are configured to provide data signals to the sub-pixels; the data lead lines are electrically connected to the data lines, respectively; the at least one group of contact pads includes a first group of contact pads and a second group of contact pads; the first insulation layer is in gaps between the contact pads and covers edges of the contact pads, and is configured to expose surfaces, away from the base substrate, of the contact pads.Type: GrantFiled: October 23, 2019Date of Patent: January 25, 2022Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Zhongliu Yang, Yudan Shui, Yongfu Diao, Wenkang Wang, Chenyu Chen
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Publication number: 20210376026Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.Type: ApplicationFiled: November 27, 2020Publication date: December 2, 2021Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xin MOU, Yongfu DIAO
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Patent number: 11189228Abstract: A pixel circuit, a method for driving a pixel circuit, and a display device are provided. The pixel circuit includes: a storage circuit, a data writing circuit, a light emitting driving circuit, and a compensation circuit. The data writing circuit is configured to write a data voltage to the storage circuit under control of a scanning control signal; the storage circuit is configured to store the data voltage and enable a stored data voltage to be available to the compensation circuit for a compensation operation; the compensation circuit is configured to maintain a compensation voltage based on the stored data voltage at a control terminal of the light emitting driving circuit under control of a compensation control signal; and the light emitting driving circuit configured to drive the light emitting element to emit light under control of the compensation voltage.Type: GrantFiled: June 5, 2019Date of Patent: November 30, 2021Assignee: BOE Technology Group Co., Ltd.Inventors: Quanhu Li, Yongfu Diao, Wenkang Wang, Zhongliu Yang, Mingjing Yang
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Publication number: 20210366941Abstract: A display substrate, a method of forming the same, a display panel and a display device are provided. The display substrate includes a thin film transistor array layer, where a semiconductor material layer pattern of a driving transistor in the thin film transistor array layer includes a first channel portion, and the first channel portion includes a first sub-channel portion. and a second sub-channel portion; the semiconductor material layer pattern further includes a first conductive portion, an included angle between a straight line where a current conduction direction of the first sub-channel portion is located and a straight line Where an extending, direction of a data line in the thin film transistor array layer is located is a first included angle.Type: ApplicationFiled: October 22, 2019Publication date: November 25, 2021Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yongfu DIAO, Wenkang WANG, Zhongliu YANG, Chenyu CHEN
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Publication number: 20210366393Abstract: A display substrate and a display device are provided. The display substrate includes a base and subpixels. The subpixel includes: a data line pattern; a power source signal line pattern including a portion extending in the first direction; and a subpixel driving circuitry. The subpixel driving circuitry includes two switching transistors, a driving transistor, and a storage capacitor. First and second electrode plates of the storage capacitor are coupled to a gate electrode of the driving transistor and the power source signal line pattern respectively. Second electrodes of the two switching transistors are coupled to a first electrode of the driving transistor. An orthogonal projection of the second electrode of at least one of the switching transistors onto the base at least partially overlaps an orthogonal projection of the power source signal line pattern onto the base, and at least partially overlaps an orthogonal projection of the second electrode plate of the storage capacitor onto the base.Type: ApplicationFiled: November 27, 2020Publication date: November 25, 2021Inventors: Yongfu DIAO, Chenyu CHEN
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Publication number: 20210335989Abstract: A display substrate, a method of forming a display substrate and a display device are provided.Type: ApplicationFiled: November 29, 2019Publication date: October 28, 2021Inventors: Yongfu DIAO, Chenyu CHEN, Biao XU