Patent ID: 9359252
Filing Date: 2016-06-07
CPC Classification: B23K,B32B,C03B,C03C,E06B

Claim Text:
1. A method of forming a glass article comprising a plurality of glass bumps, the glass article having a surface, the glass bumps formed in the glass article by laser radiation, each glass bump having a terminal point at a distance from the glass article surface, wherein a standard deviation of the distance between the glass article surface and the terminal points of the plurality of glass bumps is less than 1 micron, the method comprising: irradiating the glass article with laser radiation at a plurality of localities to induce growth of the glass bumps at the plurality of localities on the glass article; detecting a back flash of light from the laser irradiated localities on the glass article with a photodetector that generates an electronic signal; setting a fixed exposure time for the laser radiation at the plurality of localities for after the back flash of light is detected; and controlling a laser irradiation dose at the plurality of localities and the distance between each glass bump terminal point and the glass article surface, using the electronic signal, by terminating laser radiation of the localities the fixed exposure time after a controller receives the electronic signal.