Forming a protective layer on a mold and mold having a protective layer
AssigneeInternational Business Machines Corporation
InventorsBradley P. Jones, Sarah H. Knickerbocker, Richard P. Volant
Life of this patent
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Abstract
A method of forming a mold having a protective layer includes forming a mold substrate having at least one substantially planar surface, depositing a layer of mold protection material onto the at least one substantially planar surface, and etching a plurality of cavities into the at least one substantially planar surface through the mold protection layer.
Claims20
A method of forming a mold having a protective layer, the method comprising:
- forming a mold substrate having at least one substantially planar surface;
- depositing a layer of mold protection material onto the at least one substantially planar surface;
- and
- etching a plurality of cavities into the at least one substantially planar surface through the mold protection layer.
A method of protecting a mold having at least one substantially planar surface provided with a plurality of mold cavities, the method comprising:
- inserting a plurality of mandrels into respective ones of the plurality of mold cavities;
- depositing a layer of mold protection material onto the at least one substantially planar surface and the plurality of mandrels;
- and
- removing the plurality of mandrels from the mold substrate.
A mold for forming solder balls, the mold comprising:
- a substrate having a main body including a first substantially planar surface and an opposing second substantially planar surface, the substrate being formed from borosilicate glass (BSG);
- a plurality of cavities formed in the first substantially planar surface, the plurality of cavities extending into the main body portion and stopping short of the second substantially planar surface;
- and
- a protective layer formed on the first substantially planar surface, the protective layer being configured and disposed to prevent damage to the substrate.
Dependencies are inferred from the claim text.