Optical filter and plasma display device having the same

A technology for plasma and display devices, which is applied to AC plasma display panels, optical/shielding devices, filters, etc., and can solve problems such as human body damage, image quality degradation, and electronic device failures.

Inactive Publication Date: 2010-01-06
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since electromagnetic waves and strong near-infrared light are radiated from the PDP when plasma is generated by high voltage, the human body may be damaged due to the electromagnetic waves and electronic devices may malfunction due to the electromagnetic waves
Also, near-infrared light affects color purity and therefore degrades image quality

Method used

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  • Optical filter and plasma display device having the same
  • Optical filter and plasma display device having the same
  • Optical filter and plasma display device having the same

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Embodiment Construction

[0017] In the following detailed description, there are shown and described, by way of illustration, certain exemplary embodiments of the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive. Also, when an element is referred to as being "on" another element, it can be directly on the other element or be indirectly on the other element with one or more intervening elements interposed therebetween. Also, when an element is referred to as being "connected to" another element, it can be directly connected to the other element or, alternatively, be indirectly connected to the other element with one or more intervening elements interposed therebetween. Hereinafter, the same reference numerals designate the same elements.

[0...

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Abstract

An optical filter and a plasma display device including the same are provided. The optical filter includes a support layer, and a plurality of stripe-shaped structures arranged at predetermined intervals on one surface of the support layer and formed using a material having a different refractive index than a refractive index of the support layer. In the optical filter, incident light is reflected at an interface between the support layer and the structure due to a difference of the respective refractive indices. Since the direction of entry of external light is the same as the reflected exit direction of the external light, visibility degradation caused by interference from the external light is minimized or reduced. Since the structure is formed using a material having a high transmittance, luminance loss of light generated by the display is also minimized.

Description

technical field [0001] Embodiments of the present invention relate to an optical filter for a flat panel display device, such as a plasma display device, and a plasma display device having the same. Background technique [0002] A plasma display panel (PDP) is a flat panel display device that displays characters or images by making fluorescent materials emit light using plasma generated by gas discharge. The PDP reproduces natural light and has a relatively fast driving speed, a larger display area, and is thinner in depth than a cathode ray tube (CRT). Accordingly, PDPs have become the focus of next-generation display devices. [0003] However, since electromagnetic waves and strong near-infrared light are radiated from the PDP when plasma is generated by high voltage, a human body may be damaged due to electromagnetic waves and electronic devices may malfunction due to electromagnetic waves. In addition, near-infrared light affects color purity, thereby degrading image q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20H01J17/49
CPCH01J11/44G02B17/006G02B5/136H01J2211/444H01J11/12G02B5/30
Inventor 黄且源权度赫李相美白承九
Owner SAMSUNG SDI CO LTD
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