Abstract:
A memory circuit includes a first programming device, a first circuit branch and a second circuit branch. The first programming device includes a first control terminal coupled to a first word line, and a first connecting end. The first circuit branch includes a first diode, and a first fuse element coupled to the first diode. The second circuit branch includes a second diode, and a second fuse element coupled to the second diode. The first circuit branch and the second circuit branch are coupled to the first connecting end of the first programming device.
Abstract:
A 3D semiconductor device, the device including: a first single crystal layer including a plurality of first transistors; at least one first metal layer interconnecting the plurality of first transistors, where the interconnecting includes forming memory peripheral circuits; a plurality of second transistors overlaying the at least one first metal layer; a second metal layer overlaying the plurality of second transistors; a first memory cell overlaying the memory peripheral circuits; and a second memory cell overlaying the first memory cell, where the first memory cell includes at least one of the second transistors, where at least one of the second transistors includes a source, channel and drain, where the source, the channel and the drain have the same dopant type.
Abstract:
A method for producing a 3D memory device including: providing a first level including a single crystal layer; forming at least one second level above the first level; performing a first etch step including etching holes within the second level; forming at least one third level above the at least one second level; performing a second etch step including etching holes within the third level; performing additional processing steps to form memory cells within the second level and within the third level, each of the first memory cells include one first transistor, each of the second memory cells include one second transistor, where at least one of the first or second transistors has a channel, a source and a drain having the same doping type, the memory is NAND, the first level includes memory peripheral circuits, at least one of the first memory cells is at least partially atop a portion of the peripheral circuits.
Abstract:
A 3D memory device, the device including: a first single crystal layer including memory peripheral circuits; a first memory layer including a first junction-less transistor; a second memory layer including a second junction-less transistor; and a third memory layer including a third junction-less transistor, where the first memory layer overlays the first single crystal layer, where the second memory layer overlays the first memory layer, where the third memory layer overlays the second memory layer, where the first junction-less transistor, the second junction-less transistor and the third junction-less transistor are formed by a single lithography and etch process, and where the first memory layer includes a nonvolatile NAND type memory.
Abstract:
The present invention discloses a three-dimensional offset-printed memory (3D-oP) with multiple bits-per-cell. The mask-patterns for different bits-in-a-cell are merged onto a same data-mask. At different printing steps, a wafer is offset by different values with respect to the data-mask. Accordingly, data-patterns from a same data-mask are printed into different bits-in-a-cell.
Abstract:
A non-volatile memory device comprises a semiconductor substrate of a first conductivity type. An array of non-volatile memory cells is located in the semiconductor substrate and arranged in a plurality of rows and columns. Each memory cell comprises a first region on a surface of the semiconductor substrate of a second conductivity type, and a second region on the surface of the semiconductor substrate of the second conductivity type. A channel region is between the first region and the second region. A word line overlies a first portion of the channel region and is insulated therefrom, and adjacent to the first region and having little or no overlap with the first region. A floating gate overlies a second portion of the channel region, is adjacent to the first portion, and is insulated therefrom and is adjacent to the second region. A coupling gate overlies the floating gate. A bit line is connected to the first region. During the operations of program, read, or erase, a negative voltage can be applied to the word lines and/or coupling gates of the selected or unselected memory cells.
Abstract:
A programmable non-volatile memory including a memory cell includes a transistor acting as an anti-fuse and two diodes for access. The memory cell that can store two bits and includes a transistor acting as an anti-fuse and two diodes for access, wherein the cell transistor includes: the source electrode formed by a metal; the first diode as the source region contact structure; the drain electrode formed by a metal; and the second diode as the drain region contact structure wherein the cell transistor, the oxide layer between the source area and the gate is the first anti-fuse the first storage; the oxide layer between the drain area and the gate is the second anti-fuse the second storage; the two diodes are connected in series to access the two anti-fuses.
Abstract:
A device for one-time-programmable (OTP) memory may include a capacitor formed by a conductive layer, an oxide layer, and a semiconductor well, and a diode that is formed after programing the device. The device may be programmable by applying a voltage between the conductive layer and the semiconductor well. The applied voltage may be capable of rupturing the oxide layer at one or more points. The conductive layer, the oxide layer, and the semiconductor well may be native CMOS process formations.
Abstract:
Junction diodes fabricated in standard CMOS logic processes can be used as program selectors for One-Time Programmable (OTP) devices, such as electrical fuse, contact/via fuse, contact/via anti-fuse, or gate-oxide breakdown anti-fuse, etc. The OTP device has at least one OTP element coupled to at least one diode in a memory cell. The diode can be constructed by P+ and N+ active regions in a CMOS N well, or on an isolated active region as the P and N terminals of the diode. The isolation between P+ and the N+ active regions of the diode in a cell or between cells can be provided by dummy MOS gate, SBL, or STI/LOCOS isolations. The OTP element can be polysilicon, silicided polysilicon, silicide, metal, metal alloy, local interconnect, thermally isolated active region, CMOS gate, or combination thereof.
Abstract:
An optoelectronic memory cell has a transparent top electrode, a photoactive layer, a latching layer, and a bottom electrode. The photoactive layer absorbs photons transmitted through the top electrode and generates charge carriers. During light exposure, the latching layer changes its resistance under an applied electric field in response to the generation of charge carriers in the photoactive layer.