KR940010954B1 - Crt screen-film and manufacturing method thereof - Google Patents

Abstract

The far-infrared radiation layer composed of at least one from SiO2, Al2O3, ZrO, MgO, CaO, TiO2, K2O, Na2O, InO is coated on the black matrix which is formed with a specific pattern at the inside of the CRT panel. The depth of the layer is preferred to be 0.2-100 or 0.5-50 micro meter and the average diameter of the material to be under 5 micro meter.

Description

Screen membrane for cathode ray tube with far-infrared radiation material and its manufacturing method

1 is a process chart showing a method of manufacturing the screen film of the present invention,

2 is a structure of a screen film obtained according to the method of the present invention,

3 is a component analysis table (3a) and wavelength-specific spectroradiometric measurement graph (3b) of the far infrared ray emitting material according to an embodiment of the present invention,

4 is an external picture of a screen film coated with a far-infrared radiation layer on the black matrix layer according to an embodiment of the present invention,

5 is a comparative photograph of a carnation (a) exposed to a conventional cathode ray tube and a carnation (b to d) exposed to a cathode ray tube according to an embodiment of the present invention.

6 is a component analysis table 6a and wavelength-specific spectroradiometric graph 6b of a far-infrared radiation substance according to another embodiment of the present invention.

7 is an external picture of a screen film coated with a far-infrared radiation layer on the black matrix layer according to another embodiment of the present invention,

8 is a comparative photograph of a carnation (a) exposed to a conventional cathode ray tube and a carnation (b to d) exposed to a cathode ray tube according to another embodiment of the present invention.

9 is a graph showing the brightness of a conventional screen film and a screen film different from each embodiment of the present invention, where a is for a conventional screen film, and b and c are screen films according to Examples 1 and 2, respectively. It is about.

* Explanation of symbols for main parts of the drawings

1 panel 2 black matrix

3: photosensitive resin 4: far-infrared radiation substance

5: phosphor layer 6: aluminum deposition film

The present invention relates to a cathode ray tube screen film having a far infrared ray emitting material and a method for manufacturing the same. Specifically, a far infrared ray is radiated by coating a far infrared ray emitting material on a black matrix layer, and the screen for a cathode ray tube improving the luminance of the entire screen layer. Membrane and its preparation method.

According to the optical division, infrared rays have a wavelength range of 0.76 to 1,000 μm. Among them, light of 5.6 to 1,000 μm wavelength region is called far infrared ray. Far infrared rays have the property of generating heat by stimulating their activity when they collide with molecules having a resonant frequency. The impact of these far infrared rays on the inch is as follows. When the far infrared rays are radiated to the skin, the heat energy absorbed by the skin is transmitted to the living tissue and the whole body by the blood flowing through the peripheral blood vessels, and the photons corresponding to the specific wavelength of the far infrared rays stimulate the receptors of the skin's outer skin or endothelial cell membrane. As a result, the infrared signal of a specific wavelength is transmitted into the cell, thereby obtaining the effect of activating the cell.

In the present invention, the far-infrared rays having characteristics such as bio-activation are emitted from televisions, computer terminals, etc., in particular, the light of 25μm or less wavelength region with excellent effect is emitted, thereby promoting the bio-activation and blood hydration provided to related workers. The purpose is to provide such an effect.

The object of the present invention is to provide a black matrix formed in a predetermined pattern on the inner surface of the panel, a phosphor layer disposed therebetween, which is adapted to excite under electron beam excitation, and an aluminum for enhancing the luminance of the front surface of the panel, enhancing the potential of the blood light surface, and the like. A cathode ray tube screen membrane comprising a membrane, which is achieved by a cathode ray tube screen membrane, characterized in that a far infrared ray emitting material layer is provided on top of the black matrix.

In addition, the present invention is to form a black matrix layer of a predetermined pattern on the inner surface of the panel in order to manufacture the screen for the cathode ray tube, by applying a photosensitive resin on the black matrix layer, exposed and developed to form a photosensitive resin film and then Forming a layer of far-infrared radiation by applying far-infrared radiation on top, and applying, exposing and developing phosphor slurry after coating, exposing and developing the photosensitive resin for forming a phosphor to form a first phosphor layer between the black matrix layers It provides a method for producing a cathode ray tube screen film comprising the step of forming.

The far-infrared radiation substance is at least one of silicon dioxide, aluminum oxide, potassium oxide, zirconium oxide, magnesium oxide, calcium oxide, titanium oxide, sodium oxide, phosphorus oxide, and the average particle diameter of these particles is preferably 5 μm or less.

In addition, the thickness of the far-infrared radiation material layer is 0.2 to 100μm, preferably 0.5 to 50μm.

Hereinafter, a method of manufacturing the cathode ray tube screen film according to the present invention will be described in the order shown in FIG.

According to a conventional method, the panel is first washed with hydrofluoric acid, pure water, and the like, and then dried, and then a photosensitive resin composed of polyvinyl alcohol, sodium dichromate, acrylic emulsion, etc. is applied to the inner surface of the panel, followed by drying, exposure, and developing processes. To form. After coating and drying graphite on the upper part of the resin layer, a black matrix pattern is formed by separating a resin film using etching liquid (FIG. 1a). After applying a negative type photosensitive resin on top of the black matrix pattern (Fig. 1b), the photosensitive resin at the top of the panel is exposed to light through a shadow mask and then developed to remove the resin layer on the top of the black matrix. Only the non-exposed resin layer remains (FIG. 1C). Next, a 0.4 mm diameter white far infrared emitter composed of at least one of silicon dioxide, aluminum oxide, magnesium oxide, sodium oxide, phosphorus oxide, potassium oxide, calcium oxide, titanium oxide, and zirconium oxide, having an average particle diameter of 5 μm or less. A spray coating is applied on the black matrix and the resin pattern using a phosphorus spray gun (FIG. 1D) to form a far infrared ray emitting material layer on the black matrix and the resin layer (FIG. 1E). Thereafter, the first slurry layer is formed by performing a typical slurry process such as photosensitive resin coating (FIG. 1f), exposure and development (FIG. 1g), phosphor slurry coating (FIG. 1h), and exposure and development ( 11). Thereafter, the second and third phosphor layers are formed through the same conventional slurry process, and then the black matrix, the far-infrared radiation material layer, the phosphor layer, and the aluminum film are formed through a filming process, an aluminum film deposition process, and a firing process. The screen film for cathode ray tubes is manufactured.

2 shows a partial cross-sectional view of a screen film made according to the method of the present invention described above. As can be seen in the figure, a black matrix graphite layer 2 and a phosphor layer 5 are formed on the inner surface of the panel 1, and a far infrared ray emitting material layer 4 of white color is usually formed on the graphite layer. Formed. An aluminum film 6 is formed on the phosphor layer 5 and the far infrared ray emitting material layer 4 at a predetermined interval. Since the far-infrared radiating material layer is white or has a color close to white, as shown in FIG. 2, the luminance is increased by re-reflecting the light reflected in the direction of the conventional graphite layer among the light emitted from the phosphor layer in the far-infrared radiating material layer. Brings effect. In other words, the far-infrared radiation material layer functions as a radiation wall. The thickness of the far-infrared radiation material layer is in the range of 0.2 to 100 μm, but when it is larger than 100 μm, it is difficult to manufacture the hemagnet layer and is easy to fall off. It is a range. Preferably it is 0.5-50 micrometers.

3 is a component analysis table (A) and wavelength-specific spectroradiometric measurements of far-infrared radiation materials composed of silicon oxide, aluminum oxide, magnesium oxide, sodium oxide, phosphorus oxide, potassium oxide, calcium oxide, and titanium oxide as an embodiment of the present invention. It is a graph (B). In Figure 3a the peaks of the components are identified. The spectroradiometric graph of FIG. 3b is obtained by using a black body (40 ° C) as a standard material, measured by Bruker's FT-IR, and detected by DTGS, and has a high intensity of light in a far infrared wavelength region of 25 μm or less. It can be seen that it is released.

4 is an external photograph of a screen film coated with a far infrared ray emitting layer on a black matrix layer according to the method of the present invention. The phosphor layer and the black matrix layer are correctly arranged so that the far infrared ray emitting material layer is not visible.

The following experiments were conducted to verify the effect of far-infrared rays emitted from cathode ray tubes with a screen film with a far-infrared radiation layer on top of the black matrix layer. Four carnations of the same state were taken, placed in the same flask, and exposed to a conventional TV and a TV employing the screen film of the present invention, and then observed a change in flower condition. Humidity, temperature, and external light conditions remain the same, and the result after exposure of the flower for 100 hours with the switch of each TV set turned on is shown in the photograph of FIG.

Carnations A, which have been exposed to conventional TV sets, have already solidified and dried out, while carnations B, C, and D, which have been exposed to TV sets according to the method of the present invention, remain vivid. This is because in the TV of the present invention, far infrared rays are radiated to activate the water in the flask and vibrate the water inside the flower so that it can have a long life.

As another embodiment of the present invention, a process of forming a far infrared ray emitting material layer on the inner surface of a cathode ray tube using a far infrared ray emitting material composed of silicon oxide, aluminum oxide, and magnesium oxide is performed in the same manner as in the above embodiment. Screen membranes were prepared.

FIG. 6 shows the component analysis table 6A and the wavelength-specific spectroradiometric graph 6B of the far-infrared radiation substance, and the peaks of the respective components are also confirmed, and it can be seen that the radiation intensity is high in the far-infrared wavelength region of 25 μm or less.

FIG. 7 shows an arrangement of the phosphor layer and the black matrix as an external photograph of the screen film on which the far-infrared radiation material layer is installed.

In order to verify the far-infrared radiation effect of the screen film thus prepared, the same experiment as in the above embodiment was performed.

8 is a comparison photograph of carnations A exposed to a conventional TV for 140 hours and carnations B to D exposed to a TV employing a screen film according to another embodiment of the present invention. Compared with D, the flower is completely dried out and the growth is stopped, but B, C, and D are still fresh. As a result, it can be seen that the screen membrane according to the method of the present invention emits far infrared rays which may affect the activation of the living body.

Table 1 shows the film state and luminance of the screen film according to each embodiment of the present invention in which the conventional screen film having no far infrared ray emitting layer and the far infrared ray emitting layer are provided.

TABLE 1

9 is a graph showing the brightness of the conventional screen film and the screen film according to each embodiment of the present invention, where a is for the conventional screen film and b is the first embodiment of the present invention, c is the second embodiment of the present invention. For the screen film according to the present invention, the screen film of the present invention exhibits about 5 to 10% improved luminance effect compared to the conventional screen film.

As described above, when the screen film is manufactured according to the method of the present invention, a high luminance improvement effect can be obtained, and when the cathode ray tube is employed, far infrared rays having characteristics such as biosynthesis are radiated, so that far infrared rays can be provided to related workers. It can be said that the industrial use value is very large.

Claims (10)

A screen for a cathode ray tube comprising a black matrix coated on the inner surface of a panel in a predetermined pattern, a phosphor layer disposed therebetween, which is adapted to excite under electron beam excitation, and an aluminum film for improving the brightness of the front surface of the panel and enhancing the potential of the fluorescent surface. In the membrane, the cathode ray tube screen membrane, characterized in that the far-infrared radiation material layer is provided on the black matrix. The cathode ray tube screen film according to claim 1, wherein the far-infrared radiation material is at least one of silicon dioxide, aluminum oxide, zirconium oxide, magnesium oxide, calcium oxide, titanium oxide, potassium oxide, sodium oxide, phosphorus oxide. The cathode ray tube screen membrane according to any one of claims 1 to 3, wherein the far-infrared radiation material layer has a thickness of 0.2 to 100 m. The cathode ray tube screen membrane according to claim 3, wherein the far-infrared radiation material layer has a thickness of 0.5 to 50 m. The cathode ray tube screen film according to any one of claims 1 to 3, wherein an average particle diameter of the far-infrared radiation substance is 5 µm or less. Forming a black matrix layer having a predetermined pattern on the inner surface of the panel; and applying a photosensitive resin on the black matrix layer, exposing and developing the photosensitive resin film to form a photosensitive resin film, and then applying a far infrared ray emitting material on the upper layer. And forming a first phosphor layer between the black matrix layers by coating, exposing and developing a phosphor slurry after coating, exposing and developing the photosensitive resin for forming a phosphor. . The method of claim 6, wherein the far-infrared radiation material is at least one of silicon oxide, aluminum oxide, zirconium oxide, magnesium oxide, calcium oxide, titanium oxide, potassium oxide, sodium oxide, phosphorus oxide. Way. The method for manufacturing a cathode ray tube screen film according to any one of claims 6 to 7, wherein the thickness of the far-infrared radiation material layer is 0.2 to 100 m. The method for manufacturing a cathode ray tube screen film according to claim 8, wherein the far infrared ray emitting material layer has a thickness of 0.5 to 50 m. The method for manufacturing a cathode ray tube screen film according to any one of claims 6 to 7, wherein an average particle diameter of the far-infrared radiation substance is 5 µm or less.