Back to results
US 5,902,369 AGranted
Carbon coated metallic mold for making a glass plate
OwnerYasuaki Sakamotoinventor
Life of this patent
Estimating the term…
Abstract
In advance of carbon coating, by injecting ion into the shaped surface of metallic mold made of super-hard materials, it becomes possible to increase the adhesiveness of the carbon coat onto the mold material, and to increase the life of the mold. In a metallic pressing mold with the required flatness secured by carbon coating on the surfaces, it is characterized in that the surface layer of the shaped surfaces is modified by ion injection in advance of carbon coating.
Claims1
A method for molding a glass plate for liquid crystal displays comprising:
- ion sputtering a surface of a metallic mold made of super-hard material to a depth of at least 0.5 .mu.m;
- coating said ion sputtered surface with carbon to a thickness up to 0.1 to 1.0 .mu.m to provide a required flatness thereof in a range of 2/1000 to 8/1000;
- and
- press-forming said glass plate in said metallic mold.
1 more element
Dependencies are inferred from the claim text.