Patents by Inventor Huiwen Xu
Huiwen Xu 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: 12272682Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures vertically, and/or horizontally and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: GrantFiled: June 19, 2020Date of Patent: April 8, 2025Assignee: JADE BIRD DISPLAY (SHANGHAI) LIMITEDInventors: Qiming Li, Qunchao Xu, Huiwen Xu
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Patent number: 12198769Abstract: An apparatus disclosed herein comprises: a plurality of memory cells and a control circuit coupled to the plurality of memory cells. The control circuit is configured to: erase a block; verify, using a first erase verify level, that the block was properly erased; verify, using a second erase verify level, that the block was properly erased; determine whether there are any mismatches in a plurality of verify statuses between neighboring wordlines of the block from verifying the block using the second erase verify level; and identify, based on the determination, whether the block has failed.Type: GrantFiled: May 10, 2022Date of Patent: January 14, 2025Inventors: Huiwen Xu, Bo Lei, Jun Wan
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Publication number: 20240428874Abstract: An apparatus includes one or more control circuits that are configured to connect to a plurality of nonvolatile memory cells. The one or more control circuits are configured to detect a first boundary between written and unwritten portions of an open block and, in response to detecting the first boundary, check for a second boundary between written and unwritten portions of the open block in order to determine if the open block was subject to a non-uniform erase operation.Type: ApplicationFiled: August 7, 2023Publication date: December 26, 2024Applicant: Western Digital Technologies, Inc.Inventors: Huiwen Xu, Deepanshu Dutta, Ken Oowada, Bo Lei, Ravi J. Kumar, Sujjatul Islam, Xue Pitner
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Publication number: 20240421248Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures vertically, and/or horizontally and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: ApplicationFiled: August 26, 2024Publication date: December 19, 2024Applicant: Jade Bird Display (Shanghai) LimitedInventors: Qiming LI, Qunchao XU, Huiwen XU
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Publication number: 20240357064Abstract: Disclosed herein is a micro LED projector comprising: a micro LED panel and a collimator unit. The micro LED structure in the micro LED panel comprises a mesa structure and a micro lens formed above the micro mesa structure, a p type semiconductor layer, an n type semiconductor layer and a light emitting layer formed between the p type semiconductor layer and the n type semiconductor layer. The center of the micro lens is at a straight line which connects the center of the light emitting layer with the center of the collimator unit. The present disclosure decreases the volume and the weight of the micro LED projector.Type: ApplicationFiled: June 30, 2024Publication date: October 24, 2024Inventors: Shuai ZHANG, Huiwen XU, Jian GUO
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Publication number: 20240355977Abstract: Disclosed herein are a micro LED structure and a micro LED projector. The micro LED structure comprises: a mesa structure and a reflective structure; wherein, the rays emitted from the sidewall of the mesa structure can be reflected by the reflective structure toward outside. The present disclosure can control the chief ray angle of the micro LED structure and reduce the loss of the light emitting from the sidewall of the mesa structure.Type: ApplicationFiled: June 30, 2024Publication date: October 24, 2024Inventors: Jian GUO, Huiwen XU
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Patent number: 12125537Abstract: The memory device includes a control circuitry that is communicatively coupled to memory cells are arranged in a plurality of word lines. The control circuitry is configured to perform a first programming pass on a selected word line. The first programming pass includes a plurality of programming loops, each of which includes the application of a programming pulse (Vpgm). The programming pulse voltage is increased between programming loops of the first programming pass by a step size. The step size is a first step size between two programming loops of the first programming pass and is a second step size that is different than the first step size between two other programming loops of the first programming pass. The control circuitry is also configured to perform a second programming pass to further program the memory cells of the selected word line to the plurality of data states.Type: GrantFiled: October 15, 2021Date of Patent: October 22, 2024Inventors: Huiwen Xu, Jun Wan, Bo Lei
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Publication number: 20240345335Abstract: Disclosed herein are a micro LED display device comprising: at least one monolithic micro LED projectors, formed to generate monochrome images separately in a same color or in a different color; an optical waveguide, formed to receive the monochrome images respectively from the monolithic micro LED projectors, deliver the monochrome images and overlap the monochrome images into an objective image; wherein, the monolithic micro LED panel comprises a micro LED array, use micro LEDs for pixels; the chief ray angle of some micro LEDs are different.Type: ApplicationFiled: June 27, 2024Publication date: October 17, 2024Inventors: Huiwen XU, Jian GUO, Shuai ZHANG
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Publication number: 20240347520Abstract: Disclosed herein are a micro LED package structure and a micro LED optical module. The micro LED package structure comprises: a main circuit board, several circuit branches and several micro LED panels. The main circuit boar comprises a printed circuit for controlling the micro LED panels; the circuit branches are separately connected with the main circuit board; and, the micro LED panels are separately configured onto the end surfaces of the circuit branches. The disclosure simplifies the package structure of the micro LED, controls the chief ray angle of the micro LED structure, reduces the loss of the light emitting from the sidewall of the mesa, and further decreases the volume and the weight of the micro LED optical module.Type: ApplicationFiled: June 27, 2024Publication date: October 17, 2024Inventors: Shuai ZHANG, Huiwen XU
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Publication number: 20240322104Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two or more LED structures. Light from the micro multi-color LED device is emitted substantially vertically upward through each of the LED structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: ApplicationFiled: May 31, 2024Publication date: September 26, 2024Applicant: Jade Bird Display (Shanghai) LimitedInventors: Qunchao XU, Huiwen XU, Qiming LI
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Patent number: 12074151Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. Light from the micro multi-color LED device is emitted substantially vertically upward through each of the LED structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: GrantFiled: June 3, 2021Date of Patent: August 27, 2024Assignee: JADE BIRD DISPLAY (SHANGHAI) LIMITEDInventors: Qunchao Xu, Huiwen Xu, Qiming Li
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Patent number: 12057169Abstract: The memory device that includes a memory block memory cells arranged in word lines. A controller is in electrical communication with the memory cells and is configured to program the memory cells to a first set of data states in a first programming pass and then to a greater second set of data states in a second programming pass. During programming of a first set of memory cells in at least one of the first and second programming passes, the controller is further configured to determine programming statuses of a second set of memory cells that is adjacent the first set of memory cells. The controller is further configured to read the first set of memory cells using a read voltage that is adjusted from a base read voltage based on the determined programming statuses of the second set of memory cells.Type: GrantFiled: May 18, 2022Date of Patent: August 6, 2024Inventors: Huiwen Xu, Nidhi Agrawal, Zhenni Wan, Bo Lei, Jun Wan
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Publication number: 20240258294Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. Light from the micro multi-color LED device is emitted horizontally from each of the LED structures and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: ApplicationFiled: March 7, 2024Publication date: August 1, 2024Applicant: Jade Bird Display (Shanghai) LimitedInventors: Qunchao Xu, Huiwen Xu, Qiming Li
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Publication number: 20240258282Abstract: A micro-LED display panel includes a micro pixel array area having a plurality of micro pixel areas, each micro pixel area including a micro-LED. The micro-LED includes at least two light emitting layers in a vertical direction and a dielectric layer formed between adjacent ones of the light emitting layers, an IC backplane formed at a back surface of the micro-LED and configured to control the light emitting layers, and a plurality of interconnected structures configured to electrically respectively connect each light emitting layer to electrodes. The interconnected structures include one or more top interconnected structures configured to electrically connect a top of each of the light emitting layers to a first electrode, and one or more bottom interconnected structures configured to electrically connect a bottom of each of the light emitting layers to the IC backplane to a second electrode.Type: ApplicationFiled: January 26, 2024Publication date: August 1, 2024Inventors: Huiwen XU, Qiming LI, Jian GUO, Qunchao XU
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Publication number: 20240257881Abstract: The adaptive erase scheme includes erasing the memory cells of a selected memory block in at least one erase loop. During the at least one erase loop, simultaneously, an erase voltage is applied to a plurality of channels in the selected memory block, a first bias voltage is applied to the plurality of word lines of the first sub-block, and a second bias voltage is applied to the plurality of word lines of the second sub-block. The first bias voltage is different than the second bias voltage so that the memory cells of the first and second sub-blocks are erased at different speeds.Type: ApplicationFiled: July 17, 2023Publication date: August 1, 2024Applicant: Western Digital Technologies, Inc.Inventors: Huiwen Xu, Bo Lei
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Patent number: 12046279Abstract: A controller is configured to program the memory cells to a first set of data states in a first programming pass and to a greater second set of data states in a second programming pass. The controller performs the first programming pass on the first word line. The controller then repeats the process of programming a portion of another word line and then comparing an upper tail of an erased data state of the first word line to a critical voltage until the upper tail of the erased data state of the first word line exceeds the critical voltage by a threshold. In response to the upper tail of the erased data state exceeding the critical voltage by the threshold, the controller then alternates between the first and second programming passes until the first programming pass is completed on the remaining word lines of the memory block.Type: GrantFiled: May 23, 2022Date of Patent: July 23, 2024Assignee: SanDisk Technologies LLCInventors: Huiwen Xu, Jun Wan, Bo Lei
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Publication number: 20240242764Abstract: The memory device includes a plurality of hybrid memory blocks that can operate in either a single bit per memory cell mode or a multiple bits per memory cell mode. The memory blocks each include a plurality of memory cells, which are arranged in a plurality of word lines. Control circuitry is configured to program a selected word line to an SLC format. The control circuitry is further configured to determine which zone within the selected hybrid memory block the selected word line is located in and set an SLC programming voltage to a level based on the determination of the zone of the selected word line. The control circuitry is further configured to apply a programming pulse at the SLC programming voltage to the selected word line to program the memory cells of the selected word line.Type: ApplicationFiled: July 17, 2023Publication date: July 18, 2024Applicant: SanDisk Technologies LLCInventors: Huiwen Xu, Deepanshu Dutta, Jia Li, Bo Lei, Ken Oowada
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Patent number: 12027509Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. Light from the micro multi-color LED device is emitted substantially vertically upward through each of the LED structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: GrantFiled: June 3, 2021Date of Patent: July 2, 2024Assignee: JADE BIRD DISPLAY (SHANGHAI) LIMITEDInventors: Qunchao Xu, Huiwen Xu, Qiming Li
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Publication number: 20240212768Abstract: A non-volatile memory system detects an indication of erase depth of a population of memory cells and adjusts the programming process for the memory cells based on the detected erase depth.Type: ApplicationFiled: July 24, 2023Publication date: June 27, 2024Applicant: SanDisk Technologies LLCInventors: Huiwen Xu, Deepanshu Dutta, Bo Lei
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Patent number: 11967589Abstract: A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. Light from the micro multi-color LED device is emitted horizontally from each of the LED structures and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.Type: GrantFiled: June 3, 2021Date of Patent: April 23, 2024Assignee: Jade Bird Display (Shanghai) LimitedInventors: Qunchao Xu, Huiwen Xu, Qiming Li