LATTICE STACK FOR INTERNAL SPACER FABRICATION

    公开(公告)号:EP4177938A1

    公开(公告)日:2023-05-10

    申请号:EP22199064.1

    申请日:2022-09-30

    申请人: INTEL Corporation

    摘要: Techniques are provided herein to form gate-all-around (GAA) semiconductor devices (100), such as those having a stacked transistor configuration. In one example case, two different semiconductor devices may both be GAA transistors each having any number of nanoribbons (104, 108) extending in the same (e.g., horizontal) direction where one device (101) is located vertically above the other device (103). An internal spacer structure (118) extends between the nanoribbons of both devices along the vertical direction, where the spacer structure includes one or more rib features (120) between the two devices. A gate structure (114) that includes one or more gate dielectric layers and one or more gate electrode layers may be formed around the nanoribbons of both devices, in some cases. In other cases, a split-gate configuration is used where upper and lower gate structures are separated by an isolation structure. Forksheet transistors and other GAA configurations may be formed using the techniques as well.

    PLATE LINE ARCHITECTURES FOR 3D-FERROELECTRIC RANDOM ACCESS MEMORY (3D-FRAM)

    公开(公告)号:EP4016625A1

    公开(公告)日:2022-06-22

    申请号:EP21194830.2

    申请日:2021-09-03

    申请人: INTEL Corporation

    IPC分类号: H01L27/11514

    摘要: Plate line architectures for 3D-Ferroelectric Random Access Memory (3D-FRAM) are described. In an example, a memory device includes a plurality of bitlines (108) along a first direction and a plurality of wordlines (110) along a second direction orthogonal to the first direction. An access transistor (106) is at an intersection of a first one of the bitlines and a first one of the wordlines. A series of alternating plate lines (PL1, ..., PL4) and insulating material (118) are fabricated over the access transistor. Two or more ferroelectric capacitors (102) are over the access transistor and through the series of alternating plate lines and an insulating material such that a first one of the ferroelectric capacitors is coupled to a first one of the plate lines and a second one of the ferroelectric capacitors is coupled to a second one of the plate lines, and wherein the two or more ferroelectric capacitors are each coupled to and controlled by the access transistor.