Optical filter and manufacturing method thereof
OwnerJin-Young Lee, Sung-Yong Lee +1inventors
InventorsJin-Young Lee, Sung-Yong Lee, Jae-Hyung Kim
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Abstract
An optical filter for a plasma display device with improved shielding angle and transmittance, and a method of manufacturing the optical filter. The optical filter includes an external light shielding layer having a plurality of first openings; and an electromagnetic wave shielding layer integrated with the external light shielding layer on one surface of the external light shielding layer, where the electromagnetic wave shielding layer has a plurality of second openings corresponding to the plurality of first openings.
Claims20
An optical filter comprising:
- an external light shielding layer having a plurality of first openings;
- and
- an electromagnetic wave shielding layer integrated with the external light shielding layer on one surface of the external light shielding layer, the electromagnetic wave shielding layer having a plurality of second openings corresponding to the plurality of first openings.
A method of manufacturing an optical filter, the method comprising:
- forming a sheet of black material as an external light shielding layer;
- forming a conductive layer as an electromagnetic wave shielding layer on one surface of the sheet of black material;
- and
- forming a plurality of first openings in the sheet of black material and forming a plurality of second openings in the conductive layer to correspond to the plurality of first openings.
Dependencies are inferred from the claim text.