Front filter in plasma display panel

Abstract

Disclosed is a front filter in a plasma display panel (PDP), in which the front filter comprises an impact-absorbing layer attached to a front surface of the panel and composed of one of EVA, acrylic polymers, and PVC to be able to absorb external impacts.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates in general to front filters in a plasma display panel, more particularly, to a front panel for improving durability of a plasma display panel. [0003] 2. Discussion of the Background Art [0004] Principle of plasma display panel displays (hereinafter referred to as PDP) technology is that 147 nm-ultraviolet rays generated by discharge of different compositions of inert gas mixtures, such as, He+Xe, Ne+Xe or He+Ne+Xe, irradiate phosphors emitting in either red, green, or blue to display images including characters or graphics. The PDP technology is at mass production stage, and recent advances in PDP technologies made easier to manufacture thin PDPs and to provide much improved picture quality. Especially, in case of a three-electrode surface discharge type PDP, charge particles formed by discharge (i.e. wall charge) are stacked on the surface, which in turn protect electrodes from sputter...

AI Technical Summary

Benefits of technology

The invention provides a front filter for reinforcing the durability of a plasma display panel. The front filter includes a panel and an impact-absorbing layer attached to the front surface of the panel and absorbing external impacts. The front filter also includes an antireflection coating, an optical characteristic layer, an EMI shielding film, and an NIR blocking film. The impact-absorbing layer can be made of a film or an adhesive / cohesion agent and is attached between the films or applied in form of an adhesive. The front filter improves durability and optical performance of the plasma display panel.

Problems solved by technology

However, one of disadvantages of using the glass 54 is that the thickness of the front filter 30 with the glass 54 is increased.

In addition, when the glass 54 is inserted to the front filter 30, total weight and cost of manufacture are increased.

When the NIR is ejected to the outside, signal-transmitting devices like a remote controller for transmitting signals via IR do not work.

As a result, signals cannot be transmitted to the PDP any more.

However, the film type front filter 60 without the glass 54, i.e. a tempered glass, is very susceptive to damages from external impacts, and this results in a much higher possibility to cause serious damages on the screen than to the front filter with the glass 54.

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