H01L27/11514

Plate node configurations and operations for a memory array
11380696 · 2022-07-05 · ·

Methods, systems, and devices for plate node configurations and operations for a memory array are described. A single plate node of a memory array may be coupled to multiple rows or columns of memory cells (e.g., ferroelectric memory cells) in a deck of memory cells. The single plate node may perform the functions of multiple plate nodes. The number of contacts to couple the single plate node to the substrate may be less than the number of contacts to couple multiple plate nodes to the substrate. Connectors or sockets in a memory array with a single plate node may define a size that is less than a size of the connectors or sockets with multiple plate nodes. In some examples, a single plate node of the memory array may be coupled to multiple lines of a memory cells in multiple decks of memory cells.

Techniques and devices for canceling memory cell variations
11380381 · 2022-07-05 · ·

A memory device may include a digit line, a ferroelectric memory cell coupled with the digit line, a first capacitor including a first node and a second node, the first node coupled with the digit line using a first path and the second node coupled with the digit line using a second path different from the first path, and a switching component positioned in the second path and coupled with the second node of the first capacitor and the digit line, the switching component configured to selectively couple the second node of the first capacitor with the digit line. In some cases, the memory device may further include a second capacitor coupled with the digit line and the second node of the first capacitor.

Semiconductor memory
11387247 · 2022-07-12 · ·

A semiconductor memory includes first to fourth stacked bodies. The first stacked body includes a first conductor, and an alternating stack of first insulators and second conductors above the first conductor in a region. The second stacked body includes a third conductor, and an alternating stack of second insulators and fourth conductors above the third conductor in another region. The third stacked body includes a fifth conductor adjacent to the first conductor via a third insulator in a separation region. The fourth stacked body includes a seventh conductor adjacent to the third conductor via a fifth insulator in the separation region. The fifth conductor is electrically insulated from the seventh conductor.

Memory arrays

A memory array comprises vertically-alternating tiers of insulative material and memory cells. The memory cells individually comprise a transistor comprising first and second source/drain regions having a channel region there-between and a gate operatively proximate the channel region. The individual memory cells comprise a capacitor comprising first and second electrodes having a capacitor insulator there-between. The first electrode electrically couples to the first source/drain region. Wordline structures extend elevationally through the insulative material and the memory cells of the vertically-alternating tiers. Individual of the gates that are in different of the memory cell tiers directly electrically couple to individual of the wordline structures. Sense-lines electrically couple to multiple of the second source/drain regions of individual of the transistors. Other embodiments are disclosed.

Memory cell arrangement
11393832 · 2022-07-19 · ·

According to various aspects, a memory cell arrangement includes: a first control line and a second control line; a plurality of memory structures disposed between the first control line and the second control line, wherein each memory structure of the plurality of memory structures comprises a third control line, a first memory cell and a second memory cell; wherein, for each memory structure of the plurality of memory structures, the first memory cell and the second memory cell are coupled to each other by the third control line; wherein, for each memory structure of the plurality of memory structures, the first memory cell is coupled to the first control line and the second memory cell is coupled to the second control line.

APPARATUSES, SYSTEMS, AND METHODS FOR FERROELECTRIC MEMORY CELL OPERATIONS
20220254399 · 2022-08-11 · ·

Apparatuses, systems, and methods for ferroelectric memory (FeRAM) cell operation. An FeRAM cell may have different charge regions it can operate across. Some regions, such as dielectric regions, may operate faster, but with reduced signal on a coupled digit line. To improve the performance while maintaining increased speed, two digit lines may be coupled to the same sense amplifier, so that the FeRAM cells coupled to both digit lines contribute signal to the sense amplifier. For example a first digit line in a first deck of the memory and a second digit line in a second deck of the memory may both be coupled to the sense amplifier. In some embodiments, additional digit lines may be used as shields (e.g., by coupling the shield digit lines to a ground voltage) to further improve the signal-to-noise ratio.

Integrated assemblies

Some embodiments include integrated memory. The integrated memory includes a first series of first conductive structures and a second series of conductive structures. The first conductive structures extend along a first direction. The second conductive structures extend along a second direction which crosses the first direction. Pillars of semiconductor material extend upwardly from the first conductive structures. Each of the pillars includes a lower source/drain region, an upper source/drain region, and a channel region between the lower and upper source/drain regions. The lower source/drain regions are coupled with the first conductive structures. Insulative material is adjacent sidewall surfaces of the pillars. The insulative material includes ZrO.sub.x, where x is a number greater than 0. The second conductive structures include gating regions which are spaced from the channel regions by at least the insulative material. Storage elements are coupled with the upper source/drain regions.

Thin film transistor deck selection in a memory device
11393822 · 2022-07-19 · ·

Methods, systems, and devices for thin film transistor deck selection in a memory device are described. A memory device may include memory arrays arranged in a stack of decks formed over a substrate, and deck selection components distributed among the layers to leverage common substrate-based circuitry. For example, each memory array of the stack may include a set of digit lines of a corresponding deck, and deck selection circuitry operable to couple the set of digit lines with a column decoder that is shared among multiple decks. To access memory cells of a selected memory array on one deck, the deck selection circuitry corresponding to the memory array may each be activated, while the deck selection circuitry corresponding to a non-selected memory array on another deck may be deactivated. The deck selection circuitry, such as transistors, may leverage thin-film manufacturing techniques, such as various techniques for forming vertical transistors.

THREE-DIMENSIONAL MEMORY DEVICE STRUCTURES AND METHODS
20220302144 · 2022-09-22 ·

A method of fabricating a semiconductor device includes forming a first stack of semiconductor layers on a substrate. The first stack of semiconductor layers includes alternating first and second semiconductor strips. The method also includes removing the first semiconductor strips to form voids between the second semiconductor strips in the first stack of semiconductor layers. The method further includes depositing a dielectric structure layer and a first conductive fill material in the voids to surround the second semiconductor strips. Further, the method includes removing the second semiconductor strips to form a second set of voids, and depositing a second conductive fill material in the second sets of voids. In some embodiments, the first conductive fill material and the second conductive fill material are configured to form first and second electrodes of a capacitor.

Memory Devices and Methods of Forming Memory Devices
20220285392 · 2022-09-08 · ·

Some embodiments include an integrated assembly having pillars arranged in an array. The pillars have channel regions between upper and lower source/drain regions. Gating structures are proximate to the channel regions and extend along a row direction. Digit lines are beneath the pillars, extend along a column direction, and are coupled with the lower source/drain regions. Linear structures are above the pillars and extend along the column direction. Bottom electrodes are coupled with the upper source/drain regions. The bottom electrodes have horizontal segments adjacent the upper source/drain regions and have vertical segments extending upwardly from the horizontal segments. The vertical segments are adjacent to lateral sides of the linear structures. Ferroelectric-insulative-material and top-electrode-material are over the bottom electrodes. A slit passes through the top-electrode-material, is directly over one of the linear structures, and extends along the column direction.