Double-Gate Vertical Transistor Semiconductor Device

    公开(公告)号:US20180175193A1

    公开(公告)日:2018-06-21

    申请号:US15835703

    申请日:2017-12-08

    Abstract: A semiconductor device is disclosed that includes a substrate and at least a first, second, third, and fourth vertical transistor supported by the substrate. Each transistor comprises a vertical channel, a polarity gate electrode forming a polarity gate adapted to act on a first portion of the channel to affect a polarity of the channel, and a control gate electrode forming a control gate adapted to act on a second portion of the channel to control the electrical conductivity of the channel. The polarity gate electrode and the control gate electrode of each one of the transistors extend laterally from their respective gate and in mutually opposite directions, and the transistors are laterally spaced from each other and arranged such that the control gate electrodes of the first and third transistor face each other and the control gate electrodes of the second and fourth transistor face each other.

    Methods of manufacturing semiconductor devices

    公开(公告)号:US09997412B1

    公开(公告)日:2018-06-12

    申请号:US15646300

    申请日:2017-07-11

    CPC classification number: H01L21/823475 H01L21/823418 H01L21/823437

    Abstract: A method of manufacturing a semiconductor device includes forming on a substrate gate electrodes extending in a first direction and spaced apart from each other in a second direction, forming capping patterns on the gate electrodes, forming interlayer dielectric layer filling spaces between adjacent gate electrodes, forming a hardmask on the interlayer dielectric layer with an opening selectively exposing second to fourth capping patterns, using the hardmask as an etch mask to form holes in the interlayer dielectric layer between the second and third gate electrodes and between the third and fourth gate electrodes, forming a barrier layer and a conductive layer in the holes, performing a first planarization to expose the hardmask, performing a second planarization to expose a portion of the barrier layer covering the second to fourth capping patterns, and performing a third planarization to completely expose the first to fourth capping patterns.

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