Patterned chuck for double-sided processing

    公开(公告)号:US11289361B2

    公开(公告)日:2022-03-29

    申请号:US16183896

    申请日:2018-11-08

    Abstract: Embodiments described herein relate to a substrate chucking apparatus having a plurality of cavities formed therein. The cavities are formed in a body of the chucking apparatus and a plurality of support elements extend from the body and separate each of the plurality of cavities. In one embodiment, a first plurality of ports are formed in a top surface of the body and extend to a bottom surface of the body through one or more of the plurality of support elements. In another embodiment, a second plurality of ports are formed in a bottom surface of the plurality of cavities and extend through the body to a bottom surface of the body. In yet another embodiment, a first electrode assembly is disposed adjacent the top surface of the body within each of the plurality of support elements and a second electrode assembly is disposed within the body adjacent each of the plurality of cavities.

    Patterning of multi-depth optical devices

    公开(公告)号:US11226556B2

    公开(公告)日:2022-01-18

    申请号:US16844636

    申请日:2020-04-09

    Abstract: Methods for patterning of multi-depth layers for the fabrication of optical devices are provided. In one embodiment, a method is provided that includes disposing a resist layer over a device layer disposed over a top surface of a substrate, the device layer having a first portion and a second portion, patterning the resist layer to form a first resist layer pattern having a plurality of first openings and a second resist layer pattern having a plurality of second openings, and etching exposed portions of the device layer defined by the plurality of first openings and the plurality of second openings, wherein the plurality of first openings are configured to form at least a portion of a plurality of first structures within the optical device, and the plurality of second openings are configured to form at least a portion of a plurality of second structures within the optical device.

    Mask orientation
    165.
    发明授权

    公开(公告)号:US11226440B2

    公开(公告)日:2022-01-18

    申请号:US16735603

    申请日:2020-01-06

    Abstract: A method of forming patterned features on a substrate is provided. The method includes positioning a plurality of masks arranged in a mask layout over a substrate. The substrate is positioned in a first plane and the plurality of masks are positioned in a second plane, the plurality of masks in the mask layout have edges that each extend parallel to the first plane and parallel or perpendicular to an alignment feature on the substrate, the substrate includes a plurality of areas configured to be patterned by energy directed through the masks arranged in the mask layout. The method further includes directing energy towards the plurality of areas through the plurality of masks arranged in the mask layout over the substrate to form a plurality of patterned features in each of the plurality of areas.

    System and method for forming surface relief gratings

    公开(公告)号:US11226439B2

    公开(公告)日:2022-01-18

    申请号:US16228205

    申请日:2018-12-20

    Abstract: Optical grating components and methods of forming are provided. In some embodiments, a method includes providing a substrate, and etching a plurality of trenches into the substrate to form an optical grating. The optical grating may include a plurality of angled trenches, wherein a depth of a first trench of the plurality of trenches varies between at least one of the following: a first lengthwise end of the first trench and a second lengthwise end of the first trench, and between a first side of the first trench and a second side of the first trench.

    Measurement system and grating pattern array

    公开(公告)号:US10921721B1

    公开(公告)日:2021-02-16

    申请号:US16596237

    申请日:2019-10-08

    Abstract: Embodiments of the present disclosure include measurement systems and grating pattern arrays. The measurement systems include multiple subsystems for creating diffraction patterns or magnified real images of grating regions on a substrate. The measurements systems are configured to reflect and transmit light, and the reflected and transmitted beams create diffraction patterns and enlarged images. The diffraction patterns and images provide information on grating pitch and angles of grating regions. Grating pattern arrays disposed on a substrate include main regions and reference regions. The reference regions are used to locate corresponding main regions. The measurement systems do not include a rotating stage, and thus precise control of rotation of a stage is not needed.

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