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Conductive antireflecting film and cathode-ray tube

A technology of cathode ray tube and anti-reflection film, which is applied in the direction of cathode ray tube/electron beam tube, cathode ray/electron beam tube shell/container, discharge tube, etc., which can solve the problem of high refractive index and anti-reflection film light reflection prevention Function decline, low refractive index, etc., to achieve the effect of preventing light reflection

Inactive Publication Date: 2004-06-09
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] But, usually, since the layer with high conductivity has a higher refractive index than the layer with low conductivity, if the conductive layer is formed on the farthest layer by the base material, the light reflection prevention function of the conductive antireflection film is present. The problem that the anti-light reflection function will be lost
[0016] Therefore, on the conductive layer, for example, a layer containing SiO 2 In this case, in order to make the anti-reflection layer play a capacitive role, the surface of the conductive anti-reflection film cannot have an excessively low resistance value, and in this way , no conduction part can be formed on the surface of the conductive anti-reflection film

Method used

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  • Conductive antireflecting film and cathode-ray tube
  • Conductive antireflecting film and cathode-ray tube
  • Conductive antireflecting film and cathode-ray tube

Examples

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Embodiment Construction

[0038] Hereinafter, specific examples are listed and the present invention is described in detail, but the present invention is not limited to the following examples.

[0039] First, ITO microparticles were dispersed in ethanol to prepare a 2wt% ITO dispersion. In addition, for 1wt% silicate solution (oxyl solution), according to SiO 2 Solid state conversion, relative to SiO 2 , respectively add and mix the ITO microparticles reaching 0wt% (comparative example), 5, 10, 20, 40, 50 and 100wt% (embodiment 1~embodiment 6), and modulate into the second~the eighth dispersion liquid (wherein, wt % is ITO(weight) / SiO 2 (weight) × 100).

[0040] Next, the panel (17-inch panel) of the assembled cathode ray tube was sprayed and ground with cerium oxide, and after removing dust, dirt and oil stains, etc., the first dispersion liquid was applied by spin coating to form a finished product. Membrane first coats the membrane. The coating conditions are that the temperature of the panel (...

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Abstract

A conductive anti-reflection film is disclosed, that comprises a first layer containing first conductive particles and a second layer disposed for covering the first layer, the second layer containing SiO2 and second conductive particles. A conductive anti-reflection film prevents the AEF (Alternating Electric Field) from taking place and light from reflecting and allows the front surface to be conductive. In addition, the conductive anti-reflection film has high productivity and high durability. A cathode ray tube displays a high quality picture for a long service life.

Description

technical field [0001] The present invention relates to a conductive antireflection film capable of preventing the occurrence of AEF (Alternating electric field) with the function of an antireflection film, and a conductive antireflection film capable of reducing light reflection on the outer surface of the front panel (panel) to prevent the occurrence of AEF cathode ray tube. Background technique [0002] In a cathode ray tube used in a Braun tube of a TV, a CRT of a computer, etc., electromagnetic waves are generated near an internal electron gun and a deflection yoke. [0003] In recent years, it has been pointed out that such electromagnetic waves leak outside the cathode ray tube and may adversely affect electronic devices arranged around them. [0004] Therefore, as a method of preventing the leakage of the electromagnetic wave (electric field) from the cathode ray tube, a method of reducing the surface resistance value of the panel of the cathode ray tube has been pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/86
CPCH01J29/868H01J2229/882H01J2229/8918
Inventor 千草尚阿部美千代松田秀三
Owner KK TOSHIBA