External light shield sheet and plasma display device using...

Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device

Reexamination Certificate

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C313S586000, C313S587000, C445S025000

Reexamination Certificate

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08072141

ABSTRACT:
A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) and an external light shield sheet which absorbs external light incident upon the PDP. The external light shield sheet includes a base unit and a plurality of pattern units which are formed in the base unit. Each of the pattern units contains 2-10 weight % of light absorption particles having a size of 1 μm or less. Since the external light shield sheet which can absorb and shield as much external light as possible is disposed at the front of the PDP, the plasma display device can effectively realize black images and improve bright room contrast.

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patent: 1 357 575 (2003-10-01), None
patent: WO 2005116740 (2005-12-01), None
European Office Action dated Nov. 17, 2008.

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