Patents by Inventor Lu LIAN
Lu LIAN 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: 11940530Abstract: Provided are an ultrasonic fingerprint identification circuit, a driving method thereof, and a display device. The ultrasonic fingerprint identification circuit comprises fingerprint identification units each including an ultrasonic fingerprint identification sensor connected to a first node; a control module connected to a composite signal line, a first control signal line and the first node and configured to provide a reset potential to the first node and to provide a pull-up potential to the first node in response to a first level provided by the composite signal line; a reading module connected to a second control signal line, the first node and a reading signal line, and configured to read a detection signal of the first node. The first control signal line connected to one fingerprint identification unit is reused as the second control signal line connected to another fingerprint identification unit.Type: GrantFiled: January 5, 2023Date of Patent: March 26, 2024Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.Inventors: Lu Lian, Feng Lu, Haochi Yu
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Publication number: 20230161032Abstract: Provided are an ultrasonic fingerprint identification circuit, a driving method thereof, and a display device. The ultrasonic fingerprint identification circuit comprises fingerprint identification units each including an ultrasonic fingerprint identification sensor connected to a first node; a control module connected to a composite signal line, a first control signal line and the first node and configured to provide a reset potential to the first node and to provide a pull-up potential to the first node in response to a first level provided by the composite signal line; a reading module connected to a second control signal line, the first node and a reading signal line, and configured to read a detection signal of the first node. The first control signal line connected to one fingerprint identification unit is reused as the second control signal line connected to another fingerprint identification unit.Type: ApplicationFiled: January 5, 2023Publication date: May 25, 2023Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.Inventors: Lu LIAN, Feng LU, Haochi YU
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Patent number: 11638384Abstract: A display panel and a display device are provided. The display panel includes a substrate, a driving unit including a first transistor, and at least one light-emitting element. The first transistor includes a first source electrode and a first drain electrode that are located at a side of the at least one light-emitting element close to the substrate. Each of the at least one light-emitting element includes a first electrode, a light-emitting layer, and a second electrode that are sequentially stacked. The first electrode is connected to the first drain electrode through a first via, and the first drain electrode is located at a side of the first source electrode close to the substrate. A material of the first drain electrode is different from a material of the first source electrode.Type: GrantFiled: March 31, 2021Date of Patent: April 25, 2023Assignee: Tianma Micro-Electronics Co., Ltd.Inventors: Haochi Yu, Feng Lu, Yang Zeng, Lu Lian
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Patent number: 11568669Abstract: Provided are an ultrasonic fingerprint identification circuit, a driving method thereof, and a display device. The ultrasonic fingerprint identification circuit comprises fingerprint identification units each including an ultrasonic fingerprint identification sensor connected to a first node; a control module connected to a composite signal line, a first control signal line and the first node and configured to provide a reset potential to the first node and to provide a pull-up potential to the first node in response to a first level provided by the composite signal line; a reading module connected to a second control signal line, the first node and a reading signal line, and configured to read a detection signal of the first node. The first control signal line connected to one fingerprint identification unit is reused as the second control signal line connected to another fingerprint identification unit.Type: GrantFiled: September 14, 2020Date of Patent: January 31, 2023Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.Inventors: Lu Lian, Feng Lu, Haochi Yu
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Patent number: 11475695Abstract: Provided are an ultrasonic fingerprint recognition circuit, a display panel, a display device and a driving method. A first end of the ultrasonic fingerprint recognizer is electrically connected to an ultrasonic signal input end of the ultrasonic fingerprint recognition circuit, and a second end of the ultrasonic fingerprint recognizer is electrically connected to a first end of the acquisition device; a control end of the sampling signal device is electrically connected to a sampling control end of the ultrasonic fingerprint recognition circuit, a first end of the sampling signal device is electrically connected to a first sampling signal end of the ultrasonic fingerprint recognition circuit, a second end of the sampling signal device is electrically connected to a second sampling signal end of the ultrasonic fingerprint recognition circuit, and a third end of the sampling signal device is electrically connected to a control end of the acquisition device.Type: GrantFiled: May 26, 2021Date of Patent: October 18, 2022Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.Inventors: Qijun Yao, Lu Lian
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Patent number: 11417140Abstract: A display panel and a display device are provided. The display panel includes a display area, at least a part of which is reused as a fingerprint recognition area, and a plurality of fingerprint recognition pixels located in the fingerprint recognition area. The display area includes light-emitting sub-pixels, a substrate, a driving circuit layer, and a pixel definition layer having openings for defining light exiting areas of the light-emitting sub-pixel. The fingerprint recognition pixel includes an ultrasonic fingerprint sensor and a reading control circuit located in the driving circuit layer, and the ultrasonic fingerprint sensor includes a first electrode, an ultrasonic material layer, and a second electrode, which are arranged sequentially from the substrate to the driving circuit layer. The first electrode is electrically connected to the reading control circuit, and the ultrasonic material layer is on a side of the pixel definition layer facing away from the substrate.Type: GrantFiled: February 8, 2021Date of Patent: August 16, 2022Assignee: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.Inventor: Lu Lian
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Publication number: 20210279438Abstract: Provided are an ultrasonic fingerprint recognition circuit, a display panel, a display device and a driving method. A first end of the ultrasonic fingerprint recognizer is electrically connected to an ultrasonic signal input end of the ultrasonic fingerprint recognition circuit, and a second end of the ultrasonic fingerprint recognizer is electrically connected to a first end of the acquisition device; a control end of the sampling signal device is electrically connected to a sampling control end of the ultrasonic fingerprint recognition circuit, a first end of the sampling signal device is electrically connected to a first sampling signal end of the ultrasonic fingerprint recognition circuit, a second end of the sampling signal device is electrically connected to a second sampling signal end of the ultrasonic fingerprint recognition circuit, and a third end of the sampling signal device is electrically connected to a control end of the acquisition device.Type: ApplicationFiled: May 26, 2021Publication date: September 9, 2021Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.Inventors: Qijun YAO, Lu Lian
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Publication number: 20210217833Abstract: A display panel and a display device are provided. The display panel includes a substrate, a driving unit including a first transistor, and at least one light-emitting element. The first transistor includes a first source electrode and a first drain electrode that are located at a side of the at least one light-emitting element close to the substrate. Each of the at least one light-emitting element includes a first electrode, a light-emitting layer, and a second electrode that are sequentially stacked. The first electrode is connected to the first drain electrode through a first via, and the first drain electrode is located at a side of the first source electrode close to the substrate. A material of the first drain electrode is different from a material of the first source electrode.Type: ApplicationFiled: March 31, 2021Publication date: July 15, 2021Applicant: Tianma Micro-Electronics Co., Ltd.Inventors: Haochi YU, Feng LU, Yang ZENG, Lu LIAN
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Publication number: 20210158004Abstract: A display panel and a display device are provided. The display panel includes a display area, at least a part of which is reused as a fingerprint recognition area, and a plurality of fingerprint recognition pixels located in the fingerprint recognition area. The display area includes light-emitting sub-pixels, a substrate, a driving circuit layer, and a pixel definition layer having openings for defining light exiting areas of the light-emitting sub-pixel. The fingerprint recognition pixel includes an ultrasonic fingerprint sensor and a reading control circuit located in the driving circuit layer, and the ultrasonic fingerprint sensor includes a first electrode, an ultrasonic material layer, and a second electrode, which are arranged sequentially from the substrate to the driving circuit layer. The first electrode is electrically connected to the reading control circuit, and the ultrasonic material layer is on a side of the pixel definition layer facing away from the substrate.Type: ApplicationFiled: February 8, 2021Publication date: May 27, 2021Applicant: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.Inventor: Lu LIAN
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Publication number: 20200410199Abstract: Provided are an ultrasonic fingerprint identification circuit, a driving method thereof, and a display device. The ultrasonic fingerprint identification circuit comprises fingerprint identification units each including an ultrasonic fingerprint identification sensor connected to a first node; a control module connected to a composite signal line, a first control signal line and the first node and configured to provide a reset potential to the first node and to provide a pull-up potential to the first node in response to a first level provided by the composite signal line; a reading module connected to a second control signal line, the first node and a reading signal line, and configured to read a detection signal of the first node. The first control signal line connected to one fingerprint identification unit is reused as the second control signal line connected to another fingerprint identification unit.Type: ApplicationFiled: September 14, 2020Publication date: December 31, 2020Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.Inventors: Lu LIAN, Feng LU, Haochi YU