Abstract:
A ternary content addressable memory and a two-port SRAM are provided and include a storage cell and two transistors. The storage cell includes a first active region, a second active region, a third active region, and a fourth active region, extending along a first direction, and a first gate line, a second gate line, a third gate line, and a fourth gate line extending along a second direction. The first gate line crosses the third active region and the fourth active region, the second gate line crosses the fourth active region, the third gate line crosses the first active region, and the fourth gate line crosses the first active region and the second active region. The transistors are electrically connected to the storage cell, and the transistors and the storage cell are arranged along the first direction.
Abstract:
A two-port ternary content addressable memory (TCAM) and layout pattern thereof, and associated memory device are provided. The two-port TCAM may include a first storage unit, a second storage unit, a set of first search terminals, a set of second search terminals, a first comparison circuit, a second comparison circuit, a first match terminal and a second match terminal, wherein the first comparison circuit is respectively coupled to the first storage unit, the second storage unit, the set of first search terminals and the first match terminal, and the second comparison circuit is respectively coupled to the first storage unit, the second storage unit, the set of second search terminals and the second match terminal. First search data and second search data may be concurrently inputted into the two-port TCAM for determining whether the first search data and the second search data match content data within the two-port TCAM.
Abstract:
The present invention provides a memory device, the memory device includes a first region having a plurality of oxide semiconductor static random access memories (OSSRAM) arranged in a first direction, and each of the OSSRAMs comprising a static random access memory (SRAM) and at least an oxide semiconductor dynamic random access memory (DOSRAM), wherein the DOSRAM is connected to the SRAM, wherein each of the DOSRAMs comprises an oxide semiconductor gate (OSG), and each of the OSGs extending in a second direction perpendicular to the first direction, and an oxide semiconductor channel extending in the first direction, an oxide semiconductor gate connection extending in the first direction to connect each of the OSGs, and a word line, a Vcc connection line and a Vss connection line extend in the first direction and are connected to the SRAMs in each OSSRAM.
Abstract:
A static random-access memory (SRAM) cell array forming method includes the following steps. A plurality of fin structures are formed on a substrate, wherein the fin structures include a plurality of active fins and a plurality of dummy fins, each PG (pass-gate) FinFET shares at least one of the active fins with a PD (pull-down) FinFET, and at least one dummy fin is disposed between the two active fins having two adjacent PU (pull-up) FinFETs thereover in a static random-access memory cell. At least a part of the dummy fins are removed. The present invention also provides a static random-access memory (SRAM) cell array formed by said method.
Abstract:
The present invention proposes a static random-access memory device (SRAM). The static random-access memory device is composed of two P-channel gates of loading transistor, two N-channel gates of driving transistor and two N-channel gates of accessing transistor in a memory cell. A dummy gate is disposed adjacent to the N-channel gate of accessing transistor with a bit line node disposed therebetween, wherein the dummy gate is electrically connected to a ground voltage through a metal layer.
Abstract:
A static random-access memory (SRAM) cell array forming method includes the following steps. A plurality of fin structures are formed on a substrate, wherein the fin structures include a plurality of active fins and a plurality of dummy fins, each PG (pass-gate) FinFET shares at least one of the active fins with a PD (pull-down) FinFET, and at least one dummy fin is disposed between the two active fins having two adjacent PU (pull-up) FinFETs thereover in a static random-access memory cell. At least a part of the dummy fins are removed. The present invention also provides a static random-access memory (SRAM) cell array formed by said method.
Abstract:
A high-density semiconductor structure includes a substrate, a bit line and a first memory unit. The bit line, disposed on the substrate, has a first side and a second side. The first memory unit includes a first transistor, a first capacitor, a second transistor and a second capacitor. The first transistor disposed on the substrate has a first terminal and a second terminal. The first terminal connects the bit line. The first capacitor connects the second terminal of the first transistor. The second transistor disposed on the substrate has a third terminal and a fourth terminal. The third terminal connects the bit line. The second capacitor connects the fourth terminal of the second transistor. The first capacitor and the second capacitor are separated from the bit line in a direction perpendicular to an extending direction of the bit line and located on the first side of the bit line.
Abstract:
A semiconductor layout structure includes a substrate comprising a cell edge region and a dummy region abutting thereto, a plurality of dummy contact patterns disposed in the dummy region and arranged along a first direction, and a plurality of dummy gate patterns disposed in the dummy region and arranged along the first direction. The dummy contact patterns and the dummy gate patterns are alternately arranged. Each dummy contact pattern includes an inner dummy contact proximal to the cell edge region and an outer dummy contact distal to the cell edge region, and the inner dummy contact and the outer dummy contact are arranged along a second direction perpendicular to the first direction and spaced apart from each other by a first gap.
Abstract:
A method for forming patterns includes the following steps. A first layout including a first target pattern and a first unprintable dummy pattern is provided. A second layout including a second target pattern and a second printable dummy pattern are provided, wherein at least part of the second printable dummy pattern overlaps the first unprintable dummy pattern exposure limit, such that the second printable dummy pattern cannot be formed in a wafer.
Abstract:
A stress memorization process including the following step is provided. A gate is formed on a substrate. A low-k dielectric layer with a dielectric constant lower than 3 is formed to entirely cover the gate and the substrate. A stress layer is formed to entirely cover the low-k dielectric layer. The stress layer and the low-k dielectric layer are removed. Moreover, a semiconductor structure including a contact etch stop layer is provided. A gate is disposed on a substrate. A porous layer entirely covers the gate and the substrate. A contact etch stop layer entirely covers the porous layer, wherein the thickness of the porous layer is thinner than the thickness of the contact etch stop layer.