Screen printing apparatus and methods

    公开(公告)号:US10350879B2

    公开(公告)日:2019-07-16

    申请号:US15500385

    申请日:2015-07-31

    Abstract: Disclosed herein are apparatuses for screen printing on a surface of a three-dimensional substrate comprising a substantially rigid, substantially planar frame having a perimeter defining a region within the perimeter having a given surface area; and a screen attached to the frame and extending across at least a portion of the surface area, wherein the screen comprises a first portion through which a liquid printing medium can pass onto a proximate three-dimensional substrate; and a second portion coated with an emulsion substantially preventing the liquid printing medium from passing through the second portion of the screen, wherein the screen has a fixed tension of less than about 20 N/cm. Methods and systems for screen printing on a surface of a three-dimensional substrate are also disclosed herein.

    METHOD AND APPARATUS FOR EDGE FINISHING OF HIGH MECHANICAL STRENGTH THIN GLASS SUBSTRATES

    公开(公告)号:US20220339751A1

    公开(公告)日:2022-10-27

    申请号:US17621049

    申请日:2020-06-11

    Abstract: Processes and devices by which a brittle material substrate may be edge formed and finished to simultaneously remove corresponding damage remaining on the edges in the areas formed by cutting and separation while imposing a desired edge profile and achieving a desired mechanical edge strength. Processes of the present disclosure may include a chemical and mechanical brush polishing process configured to shape and/or polish a surface of one or more thin substrates. A plurality of substrates may be arranged in a stacked configuration, and engineered interposer devices may be arranged between the stacked substrates. The interposers may provide between the substrates and may direct filament placement during brushing so as to guide material removal on the substrate edges. Substrate edge profile shapes, including symmetric and asymmetric profiles, may be formed by strategic manipulation of interposer properties including dimensions, mechanical features, material properties, and positioning.

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