Filter for display device

A technology for display devices and filters, applied in identification devices, optical/shielding devices, AC plasma display panels, etc., can solve problems such as increasing costs and reducing filter light transmittance, achieving high-efficiency manufacturing processes and wide color reproduction range , the effect of good light transmittance

Inactive Publication Date: 2009-05-27
SAMSUNG CORNING PRECISION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the efficiency of absorbing near-infrared rays, a large amount of colorant is required, which increases the cost and reduces the light transmittance of the filter

Method used

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  • Filter for display device
  • Filter for display device
  • Filter for display device

Examples

Experimental program
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Embodiment Construction

[0030] Hereinafter, the present invention will be described more fully with reference to the accompanying drawings that show exemplary embodiments of the invention.

[0031] Although not shown, a PDP device according to the present invention includes: a housing; a cover covering the housing; a drive circuit board accommodated in the housing; a panel assembly including a light emitting unit in which gas discharge occurs and a phosphor layer ; and a PDP filter. The light emitting unit contains discharge gas. For example, Ne—Xe based gas, He—Xe based gas, etc. may be used as the discharge gas. The panel assembly emits light in a manner similar to a fluorescent light. That is, gas discharge occurs in the light emitting unit and the discharge gas emits ultraviolet rays, and then, the emitted ultraviolet rays excite fluorescent layers in the panel assembly to generate visible light.

[0032] The PDP filter is provided in front of the panel assembly. The PDP filter may be install...

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PUM

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Abstract

A filter for a display device includes a transparent substrate; a near infrared ray blocking layer; and electromagnetic shielding layer; an external light blocking layer; and a color compensation layer. The near infrared ray blocking layer is formed on the transparent substrate and includes a metal thin film and a metal oxide thin film which are alternately layered, each of the metal thin film and the metal oxide thin film being layered one or more times. The electromagnetic shielding layer is formed on the near infrared ray blocking layer and includes a metal mesh pattern. The external light blocking layer includes an external light blocking pattern, the external light blocking pattern including a plurality of external light blocking parts with a wedge shape which are filled with a light absorbing material and a conductive material. The color compensation layer is formed on the external light blocking layer and includes a polymer resin and at least two kinds of colorants selectively absorbing lights. The filter has a transmittance of 5% or less at an 850 nm wavelength. The filter has excellent performance in blocking near infrared rays and electromagnetic waves and high transmittance to visible light.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2007-0118501 filed with the Korean Intellectual Property Office on November 20, 2007, the disclosure of which is hereby incorporated by reference. technical field [0003] The invention relates to a filter for a display device, which has excellent performance in blocking near-infrared rays and electromagnetic waves and has high transmittance of visible light. Background technique [0004] Display devices include televisions, personal computer monitors, portable display devices, and the like. Display devices have recently become larger in size and thinner. [0005] Accordingly, Flat Panel Display (FPD) devices, such as Plasma Display Panel (PDP) devices, Liquid Crystal Display (LCD) devices, Field Emission Display (FED) devices, and Organic Light Emitting Display (OLED) devices, replaced the former as representative display The device is a cathode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20H01J17/49G02B5/22G02B5/26G02B5/28G09F9/00H05K9/00
CPCH01J2211/448H01J11/44G02B5/204G02B5/208H01J11/10H01J2211/446H01J2211/444G02B5/20H05K9/00
Inventor 徐知润申东根吴商润朴大出金志映
Owner SAMSUNG CORNING PRECISION MATERIALS CO LTD
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