Thin-film resistor (TFR) having a TFR element providing a diffusion barrier for underlying TFR heads

    公开(公告)号:US11824079B2

    公开(公告)日:2023-11-21

    申请号:US17233285

    申请日:2021-04-16

    Inventor: Yaojian Leng

    CPC classification number: H01L28/24 H01C7/006 H01L21/76807 H01L23/53238

    Abstract: A thin-film resistor (TFR) module is formed in an integrated circuit device. The TFR module includes a pair of metal TFR heads (e.g., copper damascene trench structures), a TFR element formed directly on the metal TFR heads to define a conductive path between the pair of TFR heads through the TFR element, and TFR contacts connected to the TFR heads. The TFR heads may be formed in a metal interconnect layer, along with various interconnect elements of the integrated circuit device. The TFR element may be formed by depositing and patterning a TFR element/diffusion barrier layer over the TFR heads and interconnect elements formed in the metal interconnect layer. The TFR element may be formed from a material that also provides a barrier against metal diffusion (e.g., copper diffusion) from each metal TFR head and interconnect element. For example, the TFR element may be formed from tantalum nitride (TaN).

    Metal-Oxide-Metal (MOM) Capacitors for Integrated Circuit Monitoring

    公开(公告)号:US20230352398A1

    公开(公告)日:2023-11-02

    申请号:US18218197

    申请日:2023-07-05

    Abstract: An array of metal-oxide-metal (MOM) capacitors formed in an integrated circuit (IC) structure may be used for evaluating misalignments between patterned layers of the IC structure. The array of MOM capacitors may be formed in a selected set of patterned layers, e.g., a via layer formed between a pair of metal interconnect layers. The MOM capacitors may be programmed with different patterned layer alignments (e.g., built in to photomasks or reticles used to form the patterned layers) to define an array of different alignments. When the MOM capacitors are formed on the wafer, the actual patterned layer alignments capacitors may differ from the programmed layer alignments due a process-related misalignment. The MOM capacitors may be subjected to electrical testing to identify this process-related misalignment, which may be used for initiating a correcting action, e.g., adjusting a manufacturing process or discarding misaligned IC structures or devices.

    Metal-insulator-metal (MIM) capacitor module

    公开(公告)号:US11769793B2

    公开(公告)日:2023-09-26

    申请号:US17516141

    申请日:2021-11-01

    Inventor: Yaojian Leng

    CPC classification number: H01L28/92 H01L21/7687 H01L23/5223 H01L23/5226

    Abstract: A metal-insulator-metal (MIM) capacitor module is provided. The MIM capacitor module includes a bottom electrode base formed in a lower metal layer, a bottom electrode conductively coupled to the bottom electrode base, a planar insulator formed over the bottom electrode, and a top electrode formed in an upper metal layer over the insulator. The bottom electrode includes a cup-shaped bottom electrode component and a bottom electrode fill component formed in an interior opening defined by the cup-shaped bottom electrode component.

    METAL-INSULATOR-METAL (MIM) CAPACITOR MODULE WITH DIELECTRIC SIDEWALL SPACER

    公开(公告)号:US20230268380A1

    公开(公告)日:2023-08-24

    申请号:US17749367

    申请日:2022-05-20

    Inventor: Yaojian Leng

    CPC classification number: H01L28/91

    Abstract: A metal-insulator-metal (MIM) capacitor includes a bottom electrode cup, an insulator cup, and a top electrode. The bottom electrode cup includes a laterally-extending bottom electrode cup base, and a bottom electrode cup sidewall extending upwardly from the laterally-extending bottom electrode cup base. The insulator cup is formed in an opening defined by the bottom electrode cup, and includes a laterally-extending insulator cup base formed over the laterally-extending bottom electrode cup base, and an insulator cup sidewall extending upwardly from the laterally-extending insulator cup base. A dielectric sidewall spacer is located between the insulator cup sidewall and the bottom electrode cup sidewall. The top electrode is formed in an opening defined by the insulator cup.

    INTEGRATED INDUCTOR WITH INDUCTOR WIRE FORMED IN AN INTEGRATED CIRCUIT LAYER STACK

    公开(公告)号:US20230129684A1

    公开(公告)日:2023-04-27

    申请号:US17719548

    申请日:2022-04-13

    Inventor: Yaojian Leng

    Abstract: A device includes (a) an integrated inductor having an inductor wire and (b) a metal interconnect arrangement, both formed in an integrated circuit layer stack of alternating metal layers and via layers. At least a portion of the inductor wire is defined by an inductor element stack including multiple metal layer inductor elements formed in multiple respective metal layers, and multiple via layer inductor elements formed in multiple respective via layers and conductively connected to the metal layer inductor elements. Each via layer inductor element has a length of at least 1 μm in each of two lateral directions orthogonal to each other and perpendicular to the vertical direction. The metal interconnect arrangement includes metal layer interconnect elements formed in the respective metal layers, and interconnect vias formed in the respective via layers.

    INTEGRATED INDUCTOR INCLUDING MULTI-COMPONENT VIA LAYER INDUCTOR ELEMENT

    公开(公告)号:US20230128990A1

    公开(公告)日:2023-04-27

    申请号:US17719586

    申请日:2022-04-13

    Inventor: Yaojian Leng

    Abstract: A device includes an integrated inductor and metal interconnect formed in an integrated circuit (IC) structure. The integrated inductor includes an inductor wire having a portion defined by an inductor element stack including (a) a metal layer inductor element formed in a metal layer in the IC structure and (b) a multi-component via layer inductor element formed in a via layer in the IC structure vertically adjacent the metal layer, and conductively connected to the metal layer inductor element. The multi-component via layer inductor element includes a via layer inductor element cup-shaped component formed from a first metal, and a via layer inductor element fill component formed from a second metal in an opening defined by the via layer inductor element cup-shaped component. The metal interconnect includes a metal layer interconnect element formed in the metal layer, and an interconnect via formed in the via layer from the first metal.

    Thin-film resistor (TFR) with improved contacts

    公开(公告)号:US11626474B2

    公开(公告)日:2023-04-11

    申请号:US17170975

    申请日:2021-02-09

    Abstract: A thin film resistor (TFR) module is formed in an integrated circuit device. The TFR module includes a TFR element connected between first and second vertically-extending TFR side contacts. The TFR element includes a base portion extending laterally between the TFR side contacts, and first and second TFR element end flanges projecting vertically from opposing ends of the base portion. The first TFR element end flange is formed on a sidewall of the first TFR side contact, and the second TFR element end flange is formed on a sidewall of the second TFR side contact. A first TFR head contacts the first TFR side contact and a top of the first TFR element end flange, and a second TFR head contacts the second TFR side contact and a top of the second TFR element end flange, thus defining two parallel conductive paths between the TFR element and each TFR head.

    THREE-DIMENSIONAL METAL-INSULATOR-METAL (MIM) CAPACITOR

    公开(公告)号:US20230096226A1

    公开(公告)日:2023-03-30

    申请号:US18074617

    申请日:2022-12-05

    Abstract: A three-dimensional metal-insulator-metal (MIM) capacitor is formed in an integrated circuit structure. The 3D MIM capacitor may include a bottom conductor including a bottom plate portion (e.g., formed in a metal interconnect layer) and vertically-extending sidewall portions extending from the bottom plate portion. An insulator layer is formed on the bottom plate portion and the vertically extending sidewall portions of the bottom conductor. A top conductor is formed over the insulating layer, such that the top conductor is capacitively coupled to both the bottom plate portion and the vertically extending sidewall portions of the bottom conductor, to thereby define an increased area of capacitive coupling between the top and bottom conductors. The vertically extending sidewall portions of the bottom conductor may be formed in a single metal layer or by components of multiple metal layers.

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