Patents by Inventor Ching-Huang Lu

Ching-Huang Lu 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).

  • Publication number: 20230369812
    Abstract: A joint and a connector including the same are provided, and the joint including: a seat body, a movable member, an elastic cushioning member and a sleeve member. The seat body includes a moving space and a barrel defining the moving space, and the barrel is insulated and having a radial cross-section contour which is round. The movable member is movably disposed within the moving space, and the movable member includes an insertion slot and two engaging recesses. The insertion slot extends in an axial direction of the movable member. The elastic cushioning member includes two clamping portions, two cushioning portions and a connecting portion connected between the two clamping portions and the two cushioning portions. Each of the two clamping portions includes a first inclined segment which is at least partially exposed from the end opening of the insertion slot.
    Type: Application
    Filed: January 11, 2023
    Publication date: November 16, 2023
    Inventors: Ching-Neng KAN, Yihung CHANG, Li-Chin YANG, Ching-Huang LU
  • Publication number: 20230360708
    Abstract: Memory systems with flexible erase suspend-resume operations are described herein. In one embodiment, a memory device is configured to receive an erase suspend command while a first erase pulse of an erase operation is at a flattop voltage. In response, the memory device suspends the erase operation. The memory device further resumes the erase operation such that a second erase pulse of the erase operation is ramped to the flattop voltage. Absent intervening erase suspend operations, erase operations of the memory device can include a single erase pulse that remains at the flattop voltage for a total duration. A first total duration plus a second total duration the first and second erase pulses, respectively, remain at the flattop voltage remains less than or equal to the total duration the single erase pulse remains at the flattop voltage.
    Type: Application
    Filed: May 9, 2022
    Publication date: November 9, 2023
    Inventors: Pitamber Shukla, Jiun-Horng Lai, Ching-Huang Lu, Fulvio Rori, Wai Ying Lo, Scott A. Stoller
  • Publication number: 20230360696
    Abstract: A read is initiated with respect to a target cell. A pair of adjacent cells includes a first cell and a second cell each adjacent to the target cell. First cell state information is obtained for the first cell and second cell state information is obtained for the second cell. A state information bin is determined by applying a pre-defined operation to the first cell state information and the second cell state information of the respective pair of adjacent cells. The target cell is assigned to the state information bin. Each state information bin defines a read level offset for reading the target cell.
    Type: Application
    Filed: May 2, 2023
    Publication date: November 9, 2023
    Inventors: Huai-Yuan Tseng, Akira Goda, Ching-Huang Lu, Eric N. Lee, Tomoharu Tanaka
  • Publication number: 20230268003
    Abstract: A memory device comprising a memory array and control logic operatively coupled with the memory array. The control logic is to: detect a program operation directed at a selected wordline of multiple wordlines of the memory array; determine, during an initial phase of the program operation, whether a program voltage being applied to the selected wordline satisfies a threshold program voltage; add, in response to the program voltage not satisfying the threshold program voltage, a base offset voltage to an initial pass voltage to generate a higher pass voltage, the initial pass voltage being a percentage of an initial program voltage; and cause the higher pass voltage to be applied to a remainder of the multiple wordlines other than the selected wordline.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 24, 2023
    Inventors: Vinh Quang Diep, Jeffrey Ming-Hung Tsai, Ching-Huang Lu, Yingda Dong
  • Publication number: 20230195328
    Abstract: Control logic in a memory device executes a programming operation to program a memory cell of a set of memory cells to a programming level. A first erase sub-operation is executed to erase the memory cell to a first threshold voltage level, the first erase sub-operation including applying, to the memory cell, a first erase pulse having a first erase voltage level. A second erase sub-operation is executed to erase the memory cell to a second threshold voltage level, the second erase sub-operation including applying, to the memory cell, a second erase pulse having a second erase voltage level, where the first erase voltage level of the first erase pulse is lower than the second erase voltage level of the second erase pulse.
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Inventors: Ching-Huang Lu, Yingda Dong, Sampath K. Ratnam
  • Publication number: 20230197164
    Abstract: Control logic can perform operations including obtaining, for each dummy wordline of a set of dummy wordlines, a respective set of step-up voltage parameters, wherein each set of step-up voltage parameters includes a step ratio corresponding to the dummy wordline, and causing a bias voltage with respect to each dummy wordline of the set of dummy wordlines to be ramped to a respective program inhibit bias voltage in accordance with the respective set of step-up voltage parameters. Additionally or alternatively, control logic can perform memory operations including causing a bias voltage with respect to each dummy wordline to be ramped to a power supply voltage during a seed first sub-phase of a pre-programming phase, and maintaining the bias voltage of the first dummy wordline at a first dummy wordline seed voltage throughout a bitline setting sub-phase of the pre-programming phase.
    Type: Application
    Filed: December 7, 2022
    Publication date: June 22, 2023
    Inventors: Vinh Q. Diep, Yingda Dong, Ching-Huang Lu
  • Publication number: 20230197175
    Abstract: Control logic in a memory device receives a request to perform a memory access operation on a memory array of the memory device and determines an operating temperature of the memory device. The control logic further modifies a default magnitude of a source voltage signal based on the operating temperature to a form a modified source voltage signal, causes the modified source voltage signal to be applied to the memory array, and performs the memory access operation on the memory array.
    Type: Application
    Filed: November 28, 2022
    Publication date: June 22, 2023
    Inventors: Ronit Roneel Prakash, Ching-Huang Lu
  • Publication number: 20230044240
    Abstract: Processing logic in a memory device initiates a program operation on a memory array, the program operation comprising a program phase and a program verify phase. The processing logic further causes a negative voltage signal to be applied to a first selected word line of a block of the memory array during the program verify phase of the program operation, wherein the first selected word line is coupled to a corresponding first memory cell of a first plurality of memory cells in a string of memory cells in the block, wherein the first selected word line is associated with the program operation.
    Type: Application
    Filed: October 20, 2022
    Publication date: February 9, 2023
    Inventors: Ching-Huang Lu, Vinh Q. Diep, Zhengyi Zhang, Yingda Dong
  • Publication number: 20230024346
    Abstract: A memory device includes unselected sub-block, which includes bit line; drain select (SGD) transistor coupled with bit line; a source voltage line; source select (SGS) transistor coupled with source voltage; and wordlines coupled with gates of string of cells, which have channel coupled between the SGS/SGD transistors. Control logic coupled with unselected sub-block is to: cause the SGD/SGS transistors to turn on while ramping the wordlines from a ground voltage to a pass voltage associated with unselected wordlines in preparation for read operation; cause, while ramping the wordlines, the channel to be pre-charged by ramping voltages on the bit line and the source voltage line to a target voltage that is greater than a source read voltage level; and in response to wordlines reaching the pass voltage, causing the SGD and SGS transistors to be turned off, to leave the channel pre-charged to the target voltage during the read operation.
    Type: Application
    Filed: February 2, 2022
    Publication date: January 26, 2023
    Inventors: Xiangyu Yang, Hong-Yan Chen, Ching-Huang Lu
  • Publication number: 20220392530
    Abstract: A memory device includes a memory array and control logic, operatively coupled with the memory array, to perform operations including initiating a read recovery process associated with a block of the memory array. The block includes wordlines at an initial voltage. The operations further include causing an early discharge sequence to be performed on a first set of wordlines of the wordlines during the read recovery process to alleviate latent read disturb. The early discharge sequence includes ramping the first set of wordlines from the initial voltage to a ramping voltage while maintaining a second set of wordlines of the wordlines at the initial voltage.
    Type: Application
    Filed: December 2, 2021
    Publication date: December 8, 2022
    Inventors: Xiangyu Yang, Ching-Huang Lu
  • Patent number: 11508449
    Abstract: Processing logic in a memory device initiates a program operation on a memory array, the program operation comprising a program phase and a program verify phase. The processing logic further causes a negative voltage signal to be applied to a first selected word line of a block of the memory array during the program verify phase of the program operation, wherein the first selected word line is coupled to a corresponding first memory cell of a first plurality of memory cells in a string of memory cells in the block, wherein the first selected word line is associated with the program operation.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: November 22, 2022
    Assignee: MICRON TECHNOLOGY, INC.
    Inventors: Ching-Huang Lu, Vinh Q. Diep, Zhengyi Zhang, Yingda Dong
  • Publication number: 20220336487
    Abstract: An electronic device comprising first blocks and second blocks of an array comprising memory cells. The memory cells in the first and second blocks comprise memory pillars extending through a stack. The memory pillars comprise a charge blocking material laterally adjacent to the stack, a storage nitride material laterally adjacent to the charge blocking material, a tunnel dielectric material laterally adjacent to the storage nitride material, a channel material laterally adjacent to the tunnel dielectric material, and a fill material between opposing sides of the channel material. One or more of the storage nitride material and the tunnel dielectric material in the first blocks differ in thickness or in material composition from one or more of the storage nitride material and the tunnel dielectric material in the second blocks. Additional electronic devices are disclosed, as are methods of forming an electronic device and related systems.
    Type: Application
    Filed: April 19, 2021
    Publication date: October 20, 2022
    Inventors: Yifen Liu, Ching-Huang Lu, Shuangqiang Luo
  • Publication number: 20220199175
    Abstract: Processing logic in a memory device initiates a program operation on a memory array, the program operation comprising a program phase and a program verify phase. The processing logic further causes a negative voltage signal to be applied to a first selected word line of a block of the memory array during the program verify phase of the program operation, wherein the first selected word line is coupled to a corresponding first memory cell of a first plurality of memory cells in a string of memory cells in the block, wherein the first selected word line is associated with the program operation.
    Type: Application
    Filed: March 2, 2021
    Publication date: June 23, 2022
    Inventors: Ching-Huang Lu, Vinh Q. Diep, Zhengyi Zhang, Yingda Dong
  • Publication number: 20220189555
    Abstract: Control logic in a memory device initiates a program operation on a memory array, the program operation comprising a seeding phase. During the seeding phase, the control logic causes a seeding voltage to be applied to a string of memory cells in a data block of the memory array during the seeding phase of the program operation and causes a first positive voltage to be applied to a first plurality of word lines of the data block during the seeding phase, wherein each of the first plurality of word lines is coupled to a corresponding memory cell of a first plurality of memory cells in the string of memory cells, the first plurality of word lines comprising a selected word line associated with the program operation.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 16, 2022
    Inventors: Vinh Q. Diep, Ching-Huang Lu, Yingda Dong
  • Patent number: 11244734
    Abstract: A memory apparatus and method of operation is provided. The apparatus includes memory cells coupled to a control circuit. The control circuit is configured to perform a first programming stage including iteratively programming each of the memory cells to first program states and verifying that the memory cells have a threshold voltage above one of a plurality of first verify voltages corresponding to the first program states. The first programming stage ends before all of the memory cells are verified thereby leaving a fraction of the memory cells below the one of the plurality of first verify voltages. The control circuit also performs a second programming stage including iteratively programming each of the memory cells to second program states and verifying that at least a predetermined number of the memory cells have the threshold voltage above one of a plurality of second verify voltages corresponding to the second program states.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: February 8, 2022
    Assignee: SanDisk Technologies LLC
    Inventors: Ashish Baraskar, Henry Chin, Ching-Huang Lu
  • Patent number: 11195857
    Abstract: A three-dimensional memory device may include an alternating stack of insulating layers and spacer material layers formed over a carrier substrate. The spacer material layers are formed as, or are subsequently replaced with, electrically conductive layers. Memory stack structures are formed through the alternating stack. Each memory stack structure includes a respective vertical semiconductor channel and a respective memory film. Drain regions and bit lines can be formed over the memory stack structures to provide a memory die. The memory die can be bonded to a logic die containing peripheral circuitry for supporting operations of memory cells within the memory die. A distal end of each of the vertical semiconductor channels is physically exposed by removing the carrier substrate. A source layer is formed directly on the distal end each of the vertical semiconductor channels. A bonding pad can be formed on the source layer.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: December 7, 2021
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: James Kai, Ching-Huang Lu, Murshed Chowdhury, Johann Alsmeier
  • Patent number: 11183509
    Abstract: An approach to use silicided bit line contacts that do not short to the underlying substrate in memory devices. The approach provides for silicide formation in the bit line contact area, using a process that benefits from being self-aligned to the oxide-nitride-oxide (ONO) nitride edges. A further benefit of the approach is that the bit line contact implant and rapid temperature anneal process can be eliminated. This approach is applicable to embedded flash, integrating high density devices and advanced logic processes.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 23, 2021
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ching-Huang Lu, Simon Siu-Sing Chan, Hidehiko Shiraiwa, Lei Xue
  • Publication number: 20210202022
    Abstract: A memory apparatus and method of operation is provided. The apparatus includes memory cells coupled to a control circuit. The control circuit is configured to perform a first programming stage including iteratively programming each of the memory cells to first program states and verifying that the memory cells have a threshold voltage above one of a plurality of first verify voltages corresponding to the first program states. The first programming stage ends before all of the memory cells are verified thereby leaving a fraction of the memory cells below the one of the plurality of first verify voltages. The control circuit also performs a second programming stage including iteratively programming each of the memory cells to second program states and verifying that at least a predetermined number of the memory cells have the threshold voltage above one of a plurality of second verify voltages corresponding to the second program states.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 1, 2021
    Applicant: SanDisk Technologies LLC
    Inventors: Ashish Baraskar, Henry Chin, Ching-Huang Lu
  • Patent number: 11037640
    Abstract: Techniques are provided to reduce neighbor word line interference and charge loss in a multi-pass program operation. In one implementation, the first pass of a multi-pass program operation uses one or more program pulses without performing associated verify tests. The memory cells may be programmed to different intermediate threshold voltage (Vth) distributions in the first program pass. Different bit line voltages can be used to obtain the different intermediate Vth distributions when the single program pulse is applied. In other cases, multiple program pulses are applied without performing verify tests. The intermediate Vth distributions can be provided for the memory cells assigned to the higher data states but not the lower data states, or for memory cells assigned to both the higher and lower data states.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: June 15, 2021
    Assignee: SanDisk Technologies LLC
    Inventors: Ashish Baraskar, Ching-Huang Lu, Vinh Diep, Yingda Dong
  • Patent number: 11024387
    Abstract: Techniques are provided for optimizing a program operation in a memory device to compensate for program speed variations due to block oxide thinning. In one approach, during a program operation, a program voltage which indicates program speed is acquired from sub-blocks with the highest and lowest program speeds. An initial program voltage for intermediate sub-blocks can be determined based on the acquired program voltages and the positions of the intermediate sub-blocks. The technique can accommodate a loss of one or both acquired program voltages if the programming is interrupted. In another approach, a program voltage which indicates program speed is acquired from one sub-block, and for a later-programmed sub-block, an appropriate offset is located from a table and summed with the acquired program voltage to determine an optimum initial program voltage.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: June 1, 2021
    Assignee: SanDisk Technologies LLC
    Inventors: Ching-Huang Lu, Ashish Baraskar, Vinh Diep