Thermal writing on glass and glass-ceramic substrates
AssigneeCorning Glass Works
InventorsElizabeth A. Boylan, Gerald D. Fong
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Abstract
There is disclosed a method of producing a transition metal pattern on a glass or glass-ceramic substrate by selective exudation of a transition metal from a glass substrate containing the metal as an oxide. The selective exudation is effected by applying an intense, well-focused source of energy to a glass in a pattern corresponding to the desired metal pattern. This develops localized heating, and thereby causes corresponding localized metal exudation from the glass. The metal pattern may be rendered electroconductive, and may constitute a pattern of interconnecting lines for microcircuitry.
Claims31
An article of manufacture comprising a glass or glass-ceramic substrate containing as a constituent an oxide of a transition metal capable of being exuded onto the surface of said substrate under thermal influence, said substrate having a portion of its surface coated with said transition metal and a portion of the surface free of such metal, the coated portion of the surface corresponding to a predetermined pattern, and said pattern extending into the substrate only under the metal pattern as a zone of diminished metal content relative to the metal content in the adjacent uncoated zone.
A method of producing a desired metallic pattern of a selected transition metal on the surface of a glass or glass-ceramic substrate which comprises the steps of:
- (a) providing a glass substrate having a composition containing an oxide of said selected transition metal and which is capable of exuding said selected transition metal onto the surface of said glass when subjected to thermal influence;
- and then
- (b) applying an intense, well-focused source of energy onto the surface of said glass substrate in a pattern corresponding to the desired metallic pattern, the intensity of the source of energy applied being such as to develop sufficient localized heating within the surface of said glass substrate to cause said selected transition metal to exude onto the surface of said glass substrate in said desired metallic pattern.
A method of thermal writing with a selected transition metal on the surface of a glass substrate which comprises the steps of:
- (a) providing a glass substrate having a composition containing an oxide of said selected transition metal and which is capable of exuding said selected transition metal onto the surface of said glass when subjected to thermal influence;
- and then
- (b) applying an intense, well-focused source of energy onto the surface of said glass substrate along a path corresponding to the desired metallic writing, the intensity of the source of energy applied being such as to develop sufficient localized heating within the surface of said glass substrate to cause said selected transition metal to exude onto the surface of said glass substrate in said desired metallic writing.
An article of manufacture comprising a glass or glass-ceramic substrate containing as a constituent an oxide of a transition metal capable of being exuded onto the surface of said substrate, and also containing a metal oxide absorbent for the optical energy of a laser beam, said substrate having a portion of its surface coated with said transition metal and a portion of the surface free of such metal, the coated portion of the surface corresponding to a predetermined pattern, and said pattern extending into the substrate only under the metal pattern as a zone of diminished metal content relative to the metal content in the adjacent uncoated zone.
Dependencies are inferred from the claim text.