TEST LINE STRUCTURE AND METHOD FOR PERFORMING WAFER ACCEPTANCE TEST

    公开(公告)号:US20170125309A1

    公开(公告)日:2017-05-04

    申请号:US14927816

    申请日:2015-10-30

    IPC分类号: H01L21/66 G01R31/28

    摘要: Test line structures on a wafer are provided. A first testing pad is formed in a scribe line of the wafer. A second testing pad is formed in the scribe line. A transistor under test is formed in the scribe line and is coupled between the first testing pad and the second testing pad. A device is formed in the scribe line and is coupled between the first testing pad and the transistor under test. A third testing pad is formed in the scribe line and is coupled between the device and the transistor under test. A current passing through the transistor under test is measured via the second testing pad or the first testing pad when a first voltage is applied to the first testing pad, wherein the first voltage is determined according to a second voltage from the third testing pad.

    APPARATUS AND METHODS FOR EFFECTIVE IMPURITY GETTERING

    公开(公告)号:US20220367538A1

    公开(公告)日:2022-11-17

    申请号:US17876438

    申请日:2022-07-28

    IPC分类号: H01L27/146

    摘要: Apparatus and methods for effective impurity gettering are described herein. In some embodiments, a described device includes: a substrate; a pixel region disposed in the substrate; an isolation region disposed in the substrate and within a proximity of the pixel region; and a heterogeneous layer on the seed area. The isolation region comprises a seed area including a first semiconductor material. The heterogeneous layer comprises a second semiconductor material that has a lattice constant different from that of the first semiconductor material.

    APPARATUS AND METHODS FOR EFFECTIVE IMPURITY GETTERING

    公开(公告)号:US20220059582A1

    公开(公告)日:2022-02-24

    申请号:US16998525

    申请日:2020-08-20

    IPC分类号: H01L27/146

    摘要: Apparatus and methods for effective impurity gettering are described herein. In some embodiments, a described device includes: a substrate; a pixel region disposed in the substrate; an isolation region disposed in the substrate and within a proximity of the pixel region; and a heterogeneous layer on the seed area. The isolation region comprises a seed area including a first semiconductor material. The heterogeneous layer comprises a second semiconductor material that has a lattice constant different from that of the first semiconductor material.