DRAM device including an air gap and a sealing layer

    公开(公告)号:US11729966B2

    公开(公告)日:2023-08-15

    申请号:US17723218

    申请日:2022-04-18

    Abstract: A DRAM device includes an isolation region defining source and drain regions in a substrate, a first bit line structure connected to the source region, a second bit line structure disposed on the isolation region, an inner spacer vertically extending on a first sidewall of the first bit line structure, an air gap is between the inner spacer and an outer spacer, a storage contact between the first and second bit line structures and connected to the drain region, a landing pad structure vertically on the storage contact, and a storage structure vertically on the landing pad structure. The sealing layer seals a top of the first air gap. The sealing layer includes a first sealing layer on a first sidewall of a pad isolation trench, and a second sealing layer on a second sidewall of the pad isolation trench and separated from the first sealing layer.

    INTEGRATED CIRCUIT DEVICE
    14.
    发明申请

    公开(公告)号:US20210066200A1

    公开(公告)日:2021-03-04

    申请号:US16802676

    申请日:2020-02-27

    Abstract: An integrated circuit device includes a conductive line formed on a substrate, an insulating spacer covering side walls of the conductive line and extending parallel with the conductive line, and a conductive plug that is spaced apart from the conductive line with the insulating spacer therebetween. The insulating spacer includes an insulating liner contacting the conductive line, an outer spacer contacting the conductive plug, and a barrier layer between the insulating liner and the outer spacer to prevent oxygen atoms from diffusing into the outer spacer.

    SEMICONDUCTOR DEVICE AND APPARATUS OF MANUFACTURING THE SAME

    公开(公告)号:US20200303409A1

    公开(公告)日:2020-09-24

    申请号:US16700801

    申请日:2019-12-02

    Abstract: A semiconductor device includes gate electrodes and interlayer insulating layers that are alternately stacked on a substrate, channel structures spaced apart from each other in a first direction and extending vertically through the gate electrodes and the interlayer insulating layers to the substrate, and a first separation region extending vertically through the gate electrodes and the interlayer insulating layers. Each gate electrode includes a first conductive layer and a second conductive layer, the first conductive layer disposed between the second conductive layer and each of two adjacent interlayer insulating layers. In a first region, between an outermost channel structure and the first separation region, of each gate electrode, the first conductive layer has a decreasing thickness toward the first separation region and the second conductive layer has an increasing thickness toward the first separation region.

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