| 主权项 |
1. A glass article comprising:
a glass surface having a glass bump thereon, wherein the glass bump comprises: a lower region comprising a diameter D1 defined by concavely rounded sides, wherein the lower region projects from the surface of the glass article, wherein diameter D1 is the glass bump maximum diameter, wherein the concavely rounded sides have a radius of curvature R1 and join with the glass article surface; an inflection region connecting the lower region of the glass bump and an upper region of the glass bump; the upper region of the glass bump comprising a transition portion and a top portion;
the transition portion comprising a diameter D2 defined by convexly rounded sides, wherein the convexly rounded sides have a radius of curvature R2, wherein diameter D2 is less than diameter D1; andthe top portion comprising a diameter D3 defined by a convexly rounded top surface, the convexly rounded top surface joining with the convexly rounded sides converging from the transition portion, wherein the convexly rounded top surface has a radius of curvature R3 from about 900 microns to about 2600 microns which is greater than the radius of curvature R2, wherein diameter D3 is less than diameter D2, wherein the convexly rounded top surface is spaced apart from the glass article surface defining a height H of the glass bump. |
