LITHOGRAPHY PROCESS MONITORING METHOD
    4.
    发明公开

    公开(公告)号:US20230367234A1

    公开(公告)日:2023-11-16

    申请号:US18360618

    申请日:2023-07-27

    IPC分类号: G03F9/00

    CPC分类号: G03F9/7026 G03F7/2004

    摘要: A method of performing a lithography process includes providing a test pattern. The test pattern includes a first set of lines arranged at a first pitch, a second set of lines arranged at the first pitch, and further includes at least one reference line between the first set of lines and the second set of lines. The test pattern is exposed with a radiation source providing an asymmetric, monopole illumination profile to form a test pattern structure on a substrate. The test pattern structure is then measured and a measured distance correlated to an offset of a lithography parameter. A lithography process is adjusted based on the offset of the lithography parameter.

    Method of operating semiconductor apparatus

    公开(公告)号:US11586115B2

    公开(公告)日:2023-02-21

    申请号:US17411571

    申请日:2021-08-25

    IPC分类号: G03F7/20

    摘要: A method of operating a semiconductor apparatus includes generating an electric field in peripheral areas of a first covering structure and a second covering structure; causing a photomask to move to a position between the first and second covering structures such that the photomask at least partially vertically overlaps the first and second covering structures and such that particles attached to the photomask are attracted to the first and second covering structures by the electric field; and irradiating the photomask with light through light transmission regions of the first and second covering structures.

    Buried Metal for FinFET Device and Method

    公开(公告)号:US20220367240A1

    公开(公告)日:2022-11-17

    申请号:US17869142

    申请日:2022-07-20

    摘要: A semiconductor device includes a buried metal line disposed in a semiconductor substrate, a first dielectric material on a first sidewall of the buried metal line and a second dielectric material on a second sidewall of the buried metal line, a first multiple fins disposed proximate the first sidewall of the buried metal line, a second multiple fins disposed proximate the second sidewall of the buried metal line, a first metal gate structure over the first multiple fins and over the buried metal line, wherein the first metal gate structure extends through the first dielectric material to contact the buried metal line, and a second metal gate structure over the second multiple fins and over the buried metal line.

    Method for validating measurement data

    公开(公告)号:US11353324B2

    公开(公告)日:2022-06-07

    申请号:US16721360

    申请日:2019-12-19

    IPC分类号: G01B15/04 G01B15/00 H01J37/28

    摘要: A method includes receiving, into a measurement tool, a substrate having a material feature, wherein the material feature is formed on the substrate according to a design feature. The method further includes applying a source signal on the material feature, collecting a response signal from the material feature by using the measurement tool, and with a computer connected to the measurement tool, calculating a simulated response signal from the design feature. The method further includes, with the computer, in response to determining that a difference between the collected response signal and the simulated response signal exceeds a predetermined value, causing the measurement tool to re-measure the material feature.

    Importing and exporting circuit layouts

    公开(公告)号:US11204897B2

    公开(公告)日:2021-12-21

    申请号:US16669320

    申请日:2019-10-30

    摘要: A computer-implemented method includes executing, using a computer, a process including a main thread that receives a layout file. The layout file includes a first plurality of tags and compressed information blocks. Each tag of the first plurality is associated with a compressed information block. The method further includes decompressing the compressed information blocks using sub-threads and thereby obtaining decompressed information blocks. The sub-threads are created by the main thread, and each sub-thread corresponds to a compressed information block. The decompressed information blocks are combined into decompressed layout information. The decompressed file is partitioned and each partition is provided to a node of a distributed computing system for performing layout correction. Multiple result files each in a compressed format are obtained from the distributed computing system and the result files are combined to obtain a single result file without decompressing and re-compressing the results from the distributed computing system.