公开(公告)号：US20140264539A1

公开(公告)日：2014-09-18

申请号：US14191625

申请日：2014-02-27

Applicant: Silicon Storage Technology, Inc.

Inventor： Nhan Do ,  Hieu Van Tran ,  Chien-Sheng Su ,  Prateep Tuntasood

IPC: H01L27/115

CPC classification number: H01L21/76224 ,  H01L21/28273 ,  H01L27/11521 ,  H01L29/42328 ,  H01L29/42336 ,  H01L29/66825 ,  H01L29/788 ,  H01L29/7881

Abstract: A memory device array with spaced apart parallel isolation regions formed in a semiconductor substrate, with an active region between each pair of adjacent isolation regions. Each isolation region includes a trench formed into the substrate surface and an insulation material formed in the trench. Portions of a top surface of the insulation material are recessed below the surface of the substrate. Each active region includes a column of memory cells each having spaced apart first and second regions with a channel region therebetween, a floating gate over a first channel region portion, and a select gate over a second channel region portion. The select gates are formed as continuous word lines extending perpendicular to the isolation regions and each forming the select gates for one row of the memory cells. Portions of each word line extend down into the trenches and disposed laterally adjacent to sidewalls of the trenches.

Abstract translation: 一种存储器件阵列，其具有形成在半导体衬底中的间隔开的平行隔离区域，在每对相邻隔离区域之间具有有源区域。 每个隔离区域包括形成在衬底表面中的沟槽和形成在沟槽中的绝缘材料。 绝缘材料的顶表面的部分凹陷在基底的表面下方。 每个有源区域包括一列存储单元，每个存储单元具有间隔开的第一和第二区域，其间具有通道区域，在第一沟道区域部分上的浮动栅极以及在第二沟道区域部分上的选择栅极。 选择栅极形成为垂直于隔离区域延伸的连续字线，并且每个形成用于一行存储器单元的选择栅极。 每个字线的一部分向下延伸到沟槽中并且横向设置成与沟槽的侧壁相邻。

公开(公告)号：US12237011B2

公开(公告)日：2025-02-25

申请号：US17853315

申请日：2022-06-29

Applicant: Silicon Storage Technology, Inc.

Inventor： Hieu Van Tran ,  Thuan Vu ,  Stanley Hong ,  Stephen Trinh ,  Anh Ly ,  Han Tran ,  Kha Nguyen ,  Hien Pham

IPC: G11C11/56 ,  G06F17/16 ,  G06N3/06 ,  G11C11/16 ,  G11C11/4074

Abstract: Various examples of decoders and physical layout designs for non-volatile flash memory arrays in an analog neural system are disclosed. In one example, a system comprises a plurality of vector-by-matrix multiplication arrays in an analog neural memory system, each vector-by-matrix multiplication array comprising an array of non-volatile memory cells organized into rows and columns, wherein each memory cell comprises a word line terminal; a plurality of read row decoders, each read row decoder coupled to one of the plurality of vector-by-matrix multiplication arrays for applying a voltage to one or more selected rows during a read operation; and a shared program row decoder coupled to all of the plurality of vector-by-matrix multiplication arrays for applying a voltage to one or more selected rows in one or more of the vector-by-matrix multiplication arrays during a program operation.

公开(公告)号：US12230319B2

公开(公告)日：2025-02-18

申请号：US17585452

申请日：2022-01-26

Applicant: Silicon Storage Technology, Inc.

Inventor： Hieu Van Tran

IPC: G11C11/54 ,  G06N3/063 ,  G11C16/04 ,  G11C16/10 ,  G11C16/24 ,  G11C16/26 ,  H10B41/30

Abstract: Numerous embodiments for improving an analog neural memory in a deep learning artificial neural network as to accuracy or power consumption as temperature changes are disclosed. In some embodiments, a method is performed to determine in real-time a bias value to apply to one or more memory cells in a neural network. In other embodiments, a bias voltage is determined from a lookup table and is applied to a terminal of a memory cell during a read operation.

公开(公告)号：US12198043B2

公开(公告)日：2025-01-14

申请号：US18522153

申请日：2023-11-28

Applicant: Silicon Storage Technology, Inc.

Inventor： Hieu Van Tran ,  Vipin Tiwari ,  Mark Reiten ,  Nhan Do

IPC: G06N3/065 ,  G06F3/06 ,  G06F17/16 ,  G06N3/08 ,  G11C27/02

Abstract: In one example, a circuit comprises an input transistor comprising a first terminal, a second terminal coupled to ground, and a gate; a capacitor comprising a first terminal and a second terminal; an output transistor comprising a first terminal providing an output current, a second terminal coupled to ground, and a gate; a first switch; and a second switch; wherein in a first mode, the first switch is closed and couples an input current to the first terminal of the input transistor and the gate of the input transistor and the second switch is closed and couples the first terminal of the input transistor to the first terminal of the capacitor and the gate of the output transistor, and in a second mode, the first switch is open and the second switch is open and the capacitor discharges into the gate of the output transistor.

公开(公告)号：US12131786B2

公开(公告)日：2024-10-29

申请号：US18104228

申请日：2023-01-31

Applicant: Silicon Storage Technology, Inc.

Inventor： Louisa Schneider ,  Xian Liu ,  Steven Lemke ,  Parviz Ghazavi ,  Jinho Kim ,  Henry A. Om'Mani ,  Hieu Van Tran ,  Nhan Do

IPC: G11C5/06 ,  G11C16/16 ,  H01L23/48 ,  H01L29/423 ,  H10B41/10 ,  H10B41/27

CPC classification number: G11C16/16 ,  H01L23/481 ,  H01L29/42328 ,  H10B41/10 ,  H10B41/27

Abstract: A memory cell array having rows and columns of memory cells with respective ones of the memory cells including spaced apart source and drain regions formed in a semiconductor substrate with a channel region extending there between, a floating gate over a first portion of the channel region, a select gate over a second portion of the channel region, and an erase gate over the source region. A strap region is disposed between first and second pluralities of the columns. For one memory cell row, a dummy floating gate is disposed in the strap region, an erase gate line electrically connects together the erase gates of the memory cells in the one row and in the first plurality of columns, wherein the erase gate line is aligned with the dummy floating gate with a row direction gap between the erase gate line and the dummy floating gate.

公开(公告)号：US20240338177A1

公开(公告)日：2024-10-10

申请号：US18218368

申请日：2023-07-05

Applicant: Silicon Storage Technology, Inc.

Inventor： Hieu Van Tran

IPC: G06F7/523 ,  G06F7/501 ,  G06F17/16 ,  G11C11/54

CPC classification number: G06F7/523 ,  G06F7/501 ,  G06F17/16 ,  G11C11/54

Abstract: In one example disclosed herein, a system comprises an analog computation-in-memory engine to perform operations in a first layer in a neural network and a digital computation-in-memory engine to perform operations in a second layer different than the first layer in the neural network. The system optionally comprises a dynamic weight engine to perform operations in a third layer different than the first layer and the second layer in the neural network.

公开(公告)号：US12112798B2

公开(公告)日：2024-10-08

申请号：US18123918

申请日：2023-03-20

Applicant: Silicon Storage Technology, Inc. ,  The Regents of the University of California

Inventor： Farnood Merrikh Bayat ,  Xinjie Guo ,  Dmitri Strukov ,  Nhan Do ,  Hieu Van Tran ,  Vipin Tiwari ,  Mark Reiten

IPC: G11C11/54 ,  G06F3/06 ,  G06N3/04 ,  G06N3/045 ,  G06N3/063 ,  G11C16/08 ,  G11C16/12 ,  G11C16/16 ,  G11C16/34 ,  G11C29/38

CPC classification number: G11C11/54 ,  G06F3/061 ,  G06F3/0655 ,  G06F3/0688 ,  G06N3/04 ,  G06N3/045 ,  G06N3/063 ,  G11C16/08 ,  G11C16/12 ,  G11C16/16 ,  G11C16/3436 ,  G11C29/38

Abstract: Numerous examples are disclosed for an output block coupled to a non-volatile memory array in a neural network and associated methods. In one example, a circuit for converting a current in a neural network into an output voltage comprises a non-volatile memory cell comprises a word line terminal, a bit line terminal, and a source line terminal, wherein the bit line terminal receives the current; and a switch for selectively coupling the word line terminal to the bit line terminal; wherein when the switch is closed, the current flows into the non-volatile memory cell and the output voltage is provided on the bit line terminal.

公开(公告)号：US20240274186A1

公开(公告)日：2024-08-15

申请号：US18644840

申请日：2024-04-24

Applicant: Silicon Storage Technology, Inc.

Inventor： Hieu Van Tran ,  Steven Lemke ,  Vipin Tiwari ,  Nhan Do ,  Mark Reiten

IPC: G11C11/54 ,  G06N3/045 ,  G11C16/04 ,  G11C16/10 ,  G11C16/14 ,  H01L29/423 ,  H01L29/788 ,  H10B41/30

CPC classification number: G11C11/54 ,  G06N3/045 ,  G11C16/0483 ,  G11C16/10 ,  G11C16/14 ,  H01L29/42324 ,  H01L29/42328 ,  H01L29/7883 ,  H10B41/30

Abstract: A neural network device with synapses having memory cells each having a floating gate and a first gate over first and second portions of a channel region between source and drain regions, and a second gate over the floating gate or the source region. First lines each electrically connect the first gates in one of the memory cell rows, second lines each electrically connect the second gates in one of the memory cell rows, third lines each electrically connect the source regions in one of the memory cell rows, fourth lines each electrically connect the drain regions in one of the memory cell columns, and a plurality of transistors each electrically connected in series with one of the fourth lines. The synapses receive a first plurality of inputs as electrical voltages on gates of the transistors, and provide a first plurality of outputs as electrical currents on the third lines.

公开(公告)号：US20240265951A1

公开(公告)日：2024-08-08

申请号：US18137370

申请日：2023-04-20

Applicant: Silicon Storage Technology, Inc.

Inventor： Hieu Van Tran ,  Hoa Vu ,  Stephen Trinh ,  Stanley Hong ,  Thuan Vu ,  Nghia Le ,  Duc Nguyen ,  Hien Pham

IPC: G11C5/14 ,  G11C7/02 ,  G11C13/00

CPC classification number: G11C5/147 ,  G11C7/02 ,  G11C13/004

Abstract: In one example, a system comprises a current-to-voltage converter to generate differential voltages from differential currents comprising a first current and a second current, the current-to-voltage converter comprising: a first bitline to provide the first current; a second bitline to provide the second current; a first regulator to apply a first voltage to the first bitline; a second regulator to apply a second voltage to the second bitline; a regulating circuit comprising a first input terminal, a second input terminal, a first output terminal, and a second output terminal, the first output terminal and the second output terminal providing the differential voltages; and a common mode circuit.

公开(公告)号：US20240256846A1

公开(公告)日：2024-08-01

申请号：US18135664

申请日：2023-04-17

Applicant: Silicon Storage Technology, Inc

Inventor： Hieu Van Tran ,  Thuan Vu ,  Stanley Hong ,  Stephen Trinh ,  Anh Ly

IPC: G06N3/065

CPC classification number: G06N3/065

Abstract: Numerous examples are disclosed of multiplexors coupled to rows in a neural network array. In one example, a system comprises a neural network array of non-volatile memory cells comprising i rows, where i is a multiple of 2; j row registers, where j