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SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF

  • US 20170338241A1
  • Filed: 09/29/2016
  • Published: 11/23/2017
  • Est. Priority Date: 05/23/2016
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a first structure including a substrate and a peripheral circuit disposed on the substrate;

    a dummy buffer stack structure disposed on the first structure, the dummy buffer stack structure including dummy interlayer insulating layers and dummy sacrificial insulating layers, which are alternately stacked, and first dummy conductive rings stacked in a line inside the respective dummy sacrificial insulating layers;

    a peripheral contact hole penetrating the dummy buffer stack structure, the peripheral contact hole being surrounded by the first dummy conductive rings; and

    a peripheral contact plug disposed in the peripheral contact hole, the peripheral contact plug extending to be connected to the peripheral circuit.

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