Patent ID: 8013807
Filing Date: 2011-09-06
Classification: H01J

Abstract:
1. A plasma display device comprising: a plasma display panel in which a plurality of black matrixes are formed in an upper substrate; and an external light shield sheet disposed at a front surface of the plasma display panel and including a base unit and a plurality of pattern units formed on the base unit, that have a refractive index higher than that of the base unit and that are configured to absorb external light incident at the front surface of the plasma display panel and light emitted from the plasma display panel, wherein a distance between two adjacent black matrixes of the plurality of black matrixes is 7 to 12 times greater than that between bottoms of two adjacent pattern units of the plurality of pattern units, and wherein a thickness of the external light shield sheet is 1.01 to 1.3 times greater than a height of the pattern unit.