A reversible corner shield apparatus and methods of use, v-shaped or angled shaped shield having a first linear shield member or wing and a second linear shield member or wing which are connected or joined at an apex therebetween, a mount or connector positioned proximate the apex between the first linear shield member or wing and a second linear shield member or wing, a hinged connector attached to the mount on a first end of the hinged connector and an elongated handle connected to a second end of the hinged connector to enable rotation between the handle and the shield and, thus, functions to assist a solo painter in rotating and positioning the shield around inner and outer corners of flooring, baseboard, door and window trim or ceiling to shield these non-painted surfaces from over-paint, over spray, uneven transition lines, unsightly paint dabs and the like.

The disclosure provides a mask sheet and a pixel structure. The mask sheet includes a mask opening configured to manufacture a sub-pixel in a pixel opening of a display panel. An area of the mask opening is greater than an area of the pixel opening corresponding thereto. The pixel opening includes at least one curved edge with an inner concave surface, the mask opening includes at least one mask edge, and the at least one mask sheet is in one-to-one correspondence with the at least one curved edge. A curvature of each mask edge is less than a curvature of the curved edge corresponding thereto.

The disclosure provides a mask sheet and a pixel structure. The mask sheet includes a mask opening configured to manufacture a sub-pixel in a pixel opening of a display panel. An area of the mask opening is greater than an area of the pixel opening corresponding thereto. The pixel opening includes at least one curved edge with an inner concave surface, the mask opening includes at least one mask edge, and the at least one mask sheet is in one-to-one correspondence with the at least one curved edge. A curvature of each mask edge is less than a curvature of the curved edge corresponding thereto.

Shadow masks comprising a multi-layer membrane having a mechanical pre-bias that compensates the effect of gravity on the membrane are disclosed. A shadow mask in accordance with the present disclosure includes a membrane that is patterned with a desired pattern of apertures. The layers of the membrane are selected such that their residual stresses collectively give rise to a stress gradient that is directed normal to the plane of the membrane such that the stress gradient mitigates gravity-induced sag. In some embodiments, the membrane includes a layer pair having internal stresses that are of opposite signs to effect a tendency to bulge outward from the plane of the membrane prior to its release from the substrate. An exemplary membrane includes a layer pair comprising a layer of stoichiometric silicon dioxide that is under residual compressive stress and a layer of stoichiometric silicon nitride that is under residual tensile stress.

This disclosure discloses a method comprising: positioning a stencil having an opening onto an aerospace part such that the aerospace part is accessible through the opening; positioning a masking medium onto the aerospace part through the opening; removing the stencil from the aerospace part such that the masking medium remains on the aerospace part and treating the aerospace part with the masking medium thereon.

This disclosure discloses a method comprising: positioning a stencil having an opening onto an aerospace part such that the aerospace part is accessible through the opening; positioning a masking medium onto the aerospace part through the opening; removing the stencil from the aerospace part such that the masking medium remains on the aerospace part and treating the aerospace part with the masking medium thereon.

The present invention provides a metal mask strip, a metal mask plate, and a manufacturing method thereof. The metal mask strip includes at least two mask sub-portions, which include: a non-light-transmitting region disposed at one end of the metal mask strip; a multiuse region disposed on a configuration side of a preset dividing line of a length of the metal mask strip, wherein the configuration side is on a same side as the non-light-transmitting region; and at least one light-transmitting region disposed between the non-light-transmitting region and the multiuse region.

A caulking alignment device including a base substrate having at least two panels, an alignment tab located on each panel with each alignment tab having a front side and a back side with the front side of the alignment tab removably attached to the corresponding panel by a non-permanent adhesive with each of the tabs supported on the base substrate in a spaced and perpendicular condition from each other, a non-permanent adhesive located on each of the back sides, a removable film covering the adhesive on each of the back sides, and caulk receiving channels formed from a spacing between the alignment tabs.

A caulking alignment device including a base substrate having at least two panels, an alignment tab located on each panel with each alignment tab having a front side and a back side with the front side of the alignment tab removably attached to the corresponding panel by a non-permanent adhesive with each of the tabs supported on the base substrate in a spaced and perpendicular condition from each other, a non-permanent adhesive located on each of the back sides, a removable film covering the adhesive on each of the back sides, and caulk receiving channels formed from a spacing between the alignment tabs.

A mask, and a preparation method and an operation method thereof are disclosed. The mask includes: a support and a mask strip mounted on the support, the mask strip including at least two connecting portions connected with the support, and a pattern portion located between the connecting portions, the pattern portion including a first outer surface, and the connecting portion including a second outer surface; wherein the second outer surface and the first outer surface are non-coplanar with each other.