Semiconductor device structure including overlay mark structure

    公开(公告)号:US12125800B2

    公开(公告)日:2024-10-22

    申请号:US17683474

    申请日:2022-03-01

    发明人: Chun-Yen Wei

    摘要: A semiconductor device structure is provided. The semiconductor device structure includes a substrate, a first conductive feature, a first light-emitting feature, a first pattern and a second pattern. The first light-emitting feature is disposed on the substrate. The first pattern is disposed on the first light-emitting feature. The second pattern is disposed on the first pattern. The first conductive feature is disposed on the substrate and at least laterally overlaps the first pattern. The first light-emitting feature is configured to emit a light of a first wavelength. The first pattern has a first transmittance to the light of the first wavelength. The second pattern has a second transmittance to the light of the first wavelength. The first transmittance is different from the second transmittance.

    Semiconductor device and manufacturing method thereof

    公开(公告)号:US12112979B2

    公开(公告)日:2024-10-08

    申请号:US17833839

    申请日:2022-06-06

    摘要: A method for manufacturing a semiconductor device includes forming a hard mask layer overlying a device layer of a semiconductor device, a mandrel underlayer over hard mask layer, and a mandrel layer over mandrel underlayer. The mandrel layer has a plurality of mandrel lines extending along a first direction. A plurality of openings are formed in mandrel underlayer extending in a second direction substantially perpendicular to first direction. A spacer layer is formed over mandrel underlayer and layer. Spacer layer fills plurality of openings in underlayer. Portions of spacer layer are removed to expose an upper surface of underlayer and mandrel layer, and mandrel layer is removed. By using remaining portions of spacer layer as a mask, underlayer and hard mask layer are removed, to form a hard mask pattern with first hard mask pattern lines extending along first direction and second hard mask pattern lines extending along second direction.

    Active region array formation method

    公开(公告)号:US12100594B2

    公开(公告)日:2024-09-24

    申请号:US17595589

    申请日:2021-03-12

    发明人: ChihCheng Liu

    摘要: An active region array formation method is provided, including: providing a substrate, and forming a first hard mask layer on a surface of the substrate; patterning the first hard mask layer by using a composite etching process to form an active region shielding layer in the first hard mask layer, a pattern of the active region shielding layer being matched with a pattern of a to-be-formed active region array, wherein the composite etching process includes at least two patterning processes and at least one pattern transfer process; removing the remaining first hard mask layer; and forming the active region array in the substrate through the active region shielding layer.