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US 8,009,980 B2Granted
Light blocking plate, camera module having same, and method for making same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsShao-Kai Pei, Zih-Wei Wang
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Abstract
An exemplary light blocking plate includes a light pervious substrate, a filter film formed on the light pervious substrate, and a metal film layer formed on the light pervious substrate and the optical filter film. The metal film layer defines a through hole to expose a central portion of the optical filter film.
Claims7
A method for making a light blocking plate, comprising:
- providing a light pervious substrate;
- applying a ceramic powder layer on the light pervious substrate;
- half curing the ceramic powder layer to make the ceramic powder layer become a half cured ceramic powder layer;
- applying a metal film layer on the peripheral side surface of the light pervious substrate and the half cured ceramic powder layer except the central portion of the half cured ceramic powder layer;
- fully curing the half cured ceramic powder layer;
- removing the fully cured ceramic powder layer from the light pervious substrate and the metal film layer to form a receiving cavity cooperatively bounded by the metal film layer and the light pervious substrate;
- and
- applying a filter film in the receiving cavity by ion assisted deposition to form the light blocking plate.
5 more elements
Dependencies are inferred from the claim text.