US 2011/0080084 A1 · FILTER, PLASMA DISPLAY DEVICE THEREOF, AND RELATED TECHNOLOGIES

Abstract

A display apparatus includes a plasma display panel (PDP) and a filter. The PDP has a display surface, and the filter has a panel side facing the display surface of the PDP and an opposing viewer side facing away from the display surface. The filter includes a base unit. The filter also includes pattern units that absorb external light from the viewer side. The pattern units have boundaries that define widths of pattern tops and widths of pattern bottoms. A distance between a pattern top and a pattern bottom defines a pattern height. A distance between adjacent boundaries, of a pair of adjacent pattern units, at adjacent pattern bottoms can be less than a distance between the adjacent boundaries at adjacent pattern tops, less than the pattern height, and greater than a width of at least one of the pattern bottoms.

Claims20

Dependent claims

A plasma display device comprising:

a plasma display panel;
and
a filter disposed at a front surface of the plasma display panel,
wherein the filter comprises:
an external light shield sheet including a base unit and a plurality of pattern units formed on the base unit and that have a refractive index higher than that of the base unit,
wherein a distance between tops of two adjacent pattern units of the plurality of pattern units is 1 to 3.25 times greater than that between bottoms of the two pattern units.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/966,533Filed 13 Dec 2010

Priority

KR 10-2006-008917014 Sep 2006

Published

7 Apr 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

H01J 11/12
AC-PDPs with at least one main electrode being out of contact with the plasma: with main electrodes provided on both sides of the discharge space
H01J 11/44
Vessels, containers or parts thereof, e.g. substrates: optical arrangements or shielding arrangements, e.g. filters, black matrices, light…
H01J 2211/444
Optical arrangements or shielding arrangements, e.g. filters or lenses: means for improving contrast or colour purity, e.g. black matrix or light…
H01J 2211/446
Optical arrangements or shielding arrangements, e.g. filters or lenses: electromagnetic shielding means; Antistatic means

Filter, plasma display device thereof, and related technologies

Life of this patent

Filter, plasma display device thereof, and related technologies

Life of this patent

Abstract

Claims20