Patent ID: 11952310
Assignee: CORNING INCORPORATED
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. A method for producing the silicate glass article of claim 1, the method comprising:
(1) irradiating the silicate glass article with a non-diffracting laser beam to form a laser beam focal line, induced absorption occurring within the laser beam focal line to produce a damage track, wherein the glass article comprises:
(a) B2O3 in an amount of at least 5 mol %; and
(b) the presence of Al2O3 and RO, wherein Al2O3 is in an amount of less than 10 mol % and RO in a total amount of less than 10 mol %, wherein R is Mg, Ca, Ba, Sr, or any combination thereof, and
(c) P2O5 in an amount of 1 mol % to 10 mol %,
wherein the silicate glass is alkali free and does not include TiO2, and

(2) etching the irradiated silicate glass article with an etching solution to produce the through glass via, the etching solution comprising an acid.