| 摘要 |
A plasma display device is provided to improve a brightness/darkness contrast and effectively display a black image by arranging an outer beam blocking sheet in front of a display panel. A plasma display device includes a base unit(700) and an outer beam blocking sheet. The outer beam blocking sheet is formed on the base unit. The outer beam blocking sheet includes a pattern unit(710), which has a smaller refractive index than the base unit. At least one of corner portions(720,730,740) of the pattern unit has a round shape. At least one of the corner portions of the pattern unit has a curvature radius between 10mum and 3mm.
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