JPH03261032A - Metal film transfer sheet and its manufacture and anode forming sheet and anode manufacture - Google Patents

Abstract

PURPOSE:To reduce manhours and cost in a cathode ray tube anode process for a color TV by providing a metal film on a black resin layer with a rough surface which is formed on a sheet to prepare a metal film transfer sheet, and forming a fluorescent substance layer and a black matrix layer thereon. CONSTITUTION:As shown in Fig. (a), a black resin layer 2 is formed on a sup port 4 made up of polyimide film, etc., via a mold-releasing layer 3 of silicon, etc. The resin layer 2 containing graphite, etc., has a rough surface, where a metal film 1 is formed with vacuum deposition. In this way, a metal film transfer sheet 5 is prepared and then pressed against a glass substrate 9 which has a black matrix layer 8 and a fluorescent layer 7 via an adhesive layer 6, as shown in Fig. (b). In such a manner that the sheet 4 having a mold- releasing layer 3 is separated, the black resin layer 2 and the metal layer 1 are transfered from the sheet 5 onto the fluorescent layer 7.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to cathode ray tubes, and in particular to a metal film transfer sheet for efficiently forming an anode having a metal back layer, a method for manufacturing the same, an anode forming sheet, and anode manufacturing. Regarding the method.

Conventional technology Conventional color television cathode ray tube anode process (C) After a suitable surface treatment is applied to the glass substrate that forms the bottom of the phosphor screen (P).
A VA-ammonium dichromate photosensitive solution was exposed and developed, and a black material such as graphite was flowed and lifted off to form a black matrix layer. Apply a slurry with pigment dispersed, dry it,
Repeat the process of exposure, development, and drying three times R (red),
A complex process was used to form each layer of G (green) and B (blue).After forming the phosphor layer, an organic polymer containing nitrocellulose etc. After forming the molecular film, a desired metal back layer is formed by vacuum evaporation or sputtering.Then, the organic matter present is decomposed by firing to form a phosphor screen. 15-20% of the electron beam passes through the shadow mask, causes the phosphor to emit light, and the remaining 80-85% of the electron beam collides with the shadow mask and heats up the shadow mask, causing the shadow mask to thermally expand. Thermal deformation occurs in a convex shape in the direction of the panel face (this phenomenon is called doming).When this phenomenon occurs, the positional relationship between the mask hole and the face panel becomes misaligned, and in extreme cases, color shift may occur.

Problems to be Solved by the Invention The above-mentioned anode formation process was extremely long and complicated, requiring large-scale vacuum evaporation equipment and sputtering equipment, leading to increased costs.
In addition, during the firing process, some or all of the metal back layer swells. It is thought that the metal back layer swells due to pressure.

Furthermore, JP-A No. 62-185833 proposes a method of forming a metal back layer by using a transfer material having a metal back of 1 m on a removable base film and transferring it onto the face plate of a cathode ray tube. (9) Although the method described here is improved in terms of process simplification compared to the above-mentioned conventional technology, the problem of swelling of the metal back layer due to the above-mentioned causes has not yet been solved. In the swollen parts of the back layer, the reflection efficiency of the phosphor decreases, which appears as local defects in color picture tubes, which is a major cause of lower yields.Also, as a countermeasure against doming, a metal back layer (usually an aluminum film) is used to prevent doming. ) A carbon black film is formed on the back surface to make it easier to absorb the radiant heat from the mask during image output, reduce heat reflection from the metal back layer, and improve the doming level by suppressing the temperature rise of the mask. When the above-mentioned blisters occur in the metal back layer, the blackening film (radiant heat absorbing material) is coated unevenly, resulting in a large difference in electron beam transmission efficiency. This caused uneven brightness.The formation of the above-mentioned blackened film was done by applying an acrylic emulsion onto the metal back layer using a sprayer, etc. to form a barrier layer. The common method is to spray paint to form a graphite film, which makes it difficult to form a uniform film thickness or control the film thickness, and because the work is done in air. There is a problem in that it is easy for dirt to get mixed in. In order to smoothly discharge the organic matter present during firing of the phosphor screen, the thickness of this blackening layer must be the minimum necessary value and uniform. It is clear that traditional spraying methods cannot meet this demand.

Means to solve the problem The means to solve the above problem (Dai) are as follows.

A black resin layer is formed on a substrate sheet with good mold releasability using a resin material that has a moderately rough surface and has good adhesion to the metal film as the metal back layer, and the metal to be transferred onto this black resin layer. A film is formed to form a metal film transfer sheet.

The black resin layer and metal film on this metal film transfer sheet are transferred onto the phosphor layer.

Alternatively, a phosphor layer is further formed on the metal film on the metal film transfer sheet, and these black resin metal pyrophosphor layers are transferred all at once to the face plate.

In addition, after transferring a black metal film with micropores and a metal film transfer sheet on which a metal film with micropores is formed on a releasable support onto a phosphor layer formed on a glass substrate, the organic substances contained therein are fired. to form a fluorescent screen. Alternatively, after sequentially forming a phosphor layer and a black matrix layer on a metal film transfer sheet on which a black metal film with micropores and a metal film with micropores are formed on a releasable support, a metal film is placed on a glass substrate. After the following is transferred all at once, the organic matter is fired to form a phosphor screen.

action The operation of the above means is as follows.

As mentioned above, the surface of the black resin layer is moderately rough, that is, the surface has moderate irregularities. When a metal film is formed on the surface by vapor deposition, etc., the thickness of the metal film is considerably thinner at the valleys (four parts) than at the top (convex parts). A large number of dots are formed. Then, when the black resin layer and metal film of this metal film transfer sheet are pressed onto the phosphor layer on a glass substrate such as a face plate through an adhesive layer and the substrate sheet is peeled off, the substrate sheet with good mold releasability and the black color are formed. Peeling occurs between the resin layer and the black resin layer and the metal film is transferred to the glass substrate side.

This transferred metal film has a large number of scattered thin parts as described above. This thin-walled part easily ruptures in the shape of a pinhole under the gas pressure of the pyrolysis gas generated by the pyrolysis of organic matter during the firing process, allowing the gas to escape. As a result, the bursting force t of the bulge or bulge in the metal back layer is completely prevented. However, the rupture marks in this thin section are in the form of pinholes, and the function of the metal back layer is not impaired at all.

In addition, a black resin layer is formed mainly on the transferred metal film, and the black resin layer absorbs radiant heat from the shadow mask and also reduces heat reflection from the metal back layer, thereby reducing the temperature rise of the shadow mask. By preventing the doming phenomenon from occurring, image quality can be improved.

Furthermore, the secondary electrons reflected by the metal back layer are also absorbed by the black layer, resulting in a clear image.

A black resin layer of the required thickness can be easily and evenly formed by uniformly coating it on the metal back layer.

In addition, using a metal film transfer sheet in which a black metal film having fine pores and a metal film having normal metallic luster having fine pores were formed on a releasable support, the above effect, that is, water During firing, due to the effect of the micropores provided in advance, no blistering occurs, and the black metal film suppresses the doming phenomenon.

Further, by forming the anode of the cathode ray tube by collectively transferring the phosphor screen forming sheet in which the phosphor pattern is formed on the metal film transfer sheet to the face plate, the number of man-hours can be significantly reduced.

Further, the above-mentioned metal film, such as a black metal film, can be formed by vapor deposition, and can be formed into a film with extremely excellent film thickness (It) or film thickness uniformity.

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.

(First Example) Regarding this example, an outline will first be explained, and then details will be explained.

FIG. 1(a) 11 shows a cross section of the metal film transfer sheet 5 of the present invention. In FIG. 1(a), 4 is
It is a support with excellent mechanical strength and solvent resistance, and various resin films such as polyethylene terephthalate, polyimide, and polyamide are used.The thickness of this film is 3 to 10 mm.
To 0 μm, preferably in the range of 5 to 50 μm.

3 is a release layer made of silicone, fluorocarbon acrylic,
A thin layer of material with excellent mold releasability, such as wax, is used.

2 is a black resin layer formed on the support 4 via the mold release layer 3, and contains graphite and carbon to have a roughened surface. As the binder for the black resin layer 2, an acrylic resin layer with good thermal decomposition properties is suitable.

1 is a metal film (hereinafter also referred to as metal back layer) formed on the black resin layer 2 by a method such as vacuum deposition or sputtering.

The metal film transfer sheet 5 shown in FIG. 1(b) LL is applied to the black matrix layer 8 through the adhesive layer 6.
After pressing the glass substrate 9 having the phosphor layer 7, the substrate sheet 4 having the release layer 3 is peeled off, and the black resin layer 2 and the metal film l on the metal film transfer sheet S are transferred to the phosphor layer 7. This shows the state where the image is transferred to the top.

1 2- The black resin layer 2 has good adhesion to the metal film 1 (details will be described later), and has extremely weak adhesion to the release layer 3, so the black resin layer 2 and the metal film 1 is peeled off from the release layer 3 and transferred onto the phosphor layer 7. In this way, a metal film l having the desired black resin layer 2 is formed on the phosphor layer 7.

This example will be explained in more detail below.

The thickness of the sheet-like support 4 should normally be about 3 to 100 .mu.m, but preferably 5 to 50 .mu.m, and in this example, it was 25 .mu.m.

The black resin layer 2 is made by adding 20 parts by weight of graphite with an average particle size of ■μm to 100 parts by weight of the acrylic resin as the base material.
Starve 5 weights of carbon black and add 1 portion of toluene as a solvent.
000 parts by weight was added and kneaded for 20 minutes using a homomixer.
It was coated to a thickness of m. The resulting coating layer (top
Due to the graphite plate crystals and fine carbon black, the surface becomes a black rough layer with moderate unevenness. The surface smoothness was 200 seconds according to Bekk smoothness. Then, the aluminum metal film 1 was formed on the black resin layer 2 by vacuum evaporation. The thickness of the metal film 1 was as shown in Fig. 1 (a).
), the tops (convex parts) of the unevenness on the surface of the black resin layer 2
It is thickest at the bottom and thinnest at the valleys (concavities). In this example, the film thickness at the top is about 1000 angstroms, and the thickness at the valleys is about 200 to 300 angstroms.
In this way, a large number of thin-walled portions are formed at the recessed portions due to the influence of the surface roughness of the black resin layer 2 due to the thickness of the metal film 1.

After that, a vinyl acetate adhesive layer 6 is applied on the phosphor layer 7, and the black resin layer 2 and metal film l formed on the release layer 3 are transferred by pressure as shown in FIG. 1(b). This is a comparison with the present example in which an anode 10 having a black resin layer 2 and a metal film 1 was further formed on a glass substrate 9. An a3-4 node (hereinafter referred to as a comparative example) to which the formed aluminum evaporated film was transferred was formed on a glass substrate in the same manner. In the subsequent firing process, the temperature was raised to about 250°C. It was confirmed by microscopic observation that micropores of 5 to 10 μm were formed in the metal film of the anode of this example. , On the other hand, in the metal film of the comparative example, such micropores are
In the case of this example, the organic matter contained in the adhesive layer 6, etc. is completely burnt out and thermally decomposed, and the metal film l
The aluminum film had no blistering at all and maintained an extremely good surface condition, and the black resin layer had all the binder thermally decomposed and a black layer of graphite etc. was formed, resulting in a good anode. On the other hand, in the anode of the comparative example, large blisters were generated over the entire surface of the aluminum film, and some of the blisters were even seen to have burst. During the firing process, the metal film is ruptured by the gas pressure generated from the organic matter (e.g. adhesive) on the lower surface of the metal film, forming a large number of pinhole-shaped micropores, which function as gas vent holes. This completely prevents the metal film from blistering. On the other hand, in the case of the comparative example, such fine pores are not formed in the metal film, so the gas under the metal film cannot escape, resulting in damage such as blistering or bursting of the blisters.

The metal film obtained in this example has sufficient characteristics as a metal back layer of a cathode ray tube.Furthermore, the effect of the black layer such as graphite suppresses doming, and secondary electrons also flow into the black layer. In this example, an extremely clear image was obtained due to absorption. After forming a phosphor screen on a glass substrate using a conventional technique, that is, a well-known technique, an organic film was formed to smooth the surface of the phosphor layer. The glass substrate is then introduced into the evaporation equipment to perform aluminum evaporation.Compared to the conventional process, in which a black resin layer is sprayed onto the aluminum film to form a black layer, the number of man-hours and costs are significantly reduced. It is possible to reduce the

6- Also, the surface roughness of the black resin layer in this example is determined by the graphite content, preferably 2 to 50 wt%,
If the composition has a graphite content of 5 to 50% by weight and a Bekk smoothness of 400 seconds or less, it is possible to obtain fine pores of about 5 to 30 μm in the metal film of the firing machine.

Also, a good metal back layer can be obtained by using nickel as the metal film.

It is also possible to perform peeling between the support 4 and the black resin layer 2 by causing cohesive failure within the black resin layer 2 and transferring the metal film without forming a resistive release layer 3. It is.

Alternatively, when the release properties between the support 4 and the black resin layer 2 are extremely good, the metal film layer and the black resin layer are collectively transferred without forming the release layer 3.

(Second example) A second embodiment will be explained using FIG. 2.

In the second embodiment, as shown in FIG. 2(a), a phosphor layer 7 is further provided on the metal film transfer sheet 4 having the structure shown in the first embodiment.
, a black matrix layer 8 is formed to form an anode forming sheet 11, which is pressure bonded to a glass substrate 9 via an adhesive layer 6 as shown in FIG. 2(b), and then a support 4 is formed.
When the anode forming sheet is peeled off, the anode forming sheet is peeled off between the release layer 3 and the black resin layer 2, and an anode 10 having a black resin layer is formed on the glass substrate 9.

The second embodiment will be described in detail below.

A release layer 3 was formed by applying a silicone film to a thickness of 1 μm on a PET film support 4 having a thickness of 12 μm.A black resin layer 2 having the composition shown in Table 1 was formed on this release layer 3. 3
The smoothness of the black resin layer coated to a thickness of μm was 100 seconds in terms of Bekk smoothness (hereinafter referred to as the margin). Similar to the first embodiment in which the metal film 1 was formed by vapor deposition to a certain thickness, the thickest part of the aluminum film is formed on the tops (convex parts) of the irregularities on the surface of the black resin layer 2, and the thin parts are in the valleys. (concavity).

(Hereinafter, blank space) 9- Furthermore, green phosphor ink was prepared by kneading the composition listed in Table 2 three times using three ceramic rolls.In the same manner, red phosphor ink and blue phosphor were mixed. An ink is prepared and a support 4 having a metal film 1 is fixed on a glass substrate.
Using the gravure offset method, a green phosphor pattern is printed on the metal film 1. After that, red phosphor and blue phosphor are sequentially printed at predetermined positions LR, G, B.
A three-color phosphor pattern was printed on a metal film.The printed pattern was satisfactory in terms of stripe uniformity, precision, and optical properties.Furthermore, using black matrix 4J with the composition shown in Table 3, The black matrix layer 8 was continuously printed on the metal film transfer sheet 5 using the gravure offset method similar to the phosphor pattern 7.The phosphor layer and the black matrix layer were printed on the metal film as described above. 3 acrylic adhesive (isodecyl methacrylate) is applied as the adhesive layer 6 on the top surface of the anode forming sheet 11.
The anode forming sheet 11 was coated uniformly with a thickness of microns (hereinafter referred to as blank space).
The support 4 coated with the release layer 3 of the anode forming sheet is peeled off and a black matrix layer 8 is placed on the glass substrate 9.
The phosphor layer 7, the metal back layer 1, and the black resin layer 2 were transferred and formed.Then, the temperature was increased to 10°C/min, 450'C.
As a result, a good black matrix layer 8, a phosphor layer 7, a metal film 1 as a metal back layer in which micropores were formed, and a black layer 2 were obtained. This anode satisfies the characteristics sufficiently as a color cathode ray tube anode. You can apply it to any of the above (O: Of course.

(Third Embodiment) FIG. 3(b)i;L is a sectional view of a metal film transfer sheet 16 according to a third embodiment of the present invention.

First, in FIG. 3(a), 4 is a support with excellent mechanical strength and solvent resistance, and is made of polyethylene terephthalate (
Various resin films such as PET), polyimide, and polyamide are used. 3 is a release layer formed in close contact with the support 4, and its material includes silicon,
Teflon, acrylic wax, etc. Resins with good mold releasability are preferred.

12 is a black metal film, and by performing vapor deposition in a low vacuum, a black metal film having no so-called metallic luster can be obtained. This black metal film is extremely effective as a countermeasure against doming and secondary electrons. 13 is a normal metal film with metallic luster,
This is to improve brightness by reflecting the light emitted by the phosphor using the mirror effect of the metal film.

Next, as shown in FIG. 3(b), micropores 15 are formed in the two layers of metal films 12 and 13 of the metal film transfer sheet shown in FIG. 3(a). The size of the micropores 15 is preferably as small as possible in order to prevent a decrease in brightness, and is 50 μm.
m or less, preferably (if micropores with a size of 5 to 30 μm are uniformly distributed and formed, no blisters will occur on the metal film surface during firing at 450°C in the final step, It can be used as a good metal back layer.

Figure 3 (C) is the metal film transfer sheet of Figure 3 (b).
is pressed onto a glass substrate 9 having a black matrix layer 8 and a phosphor layer 7 via an adhesive layer 6, and then the substrate sheet 4
The black metal film 12 having micropores 15 and the metal film 13 having micropores on the metal film transfer sheet 16 are transferred to the phosphor layer 2 by peeling off the sheet. Due to the effect of the release layer 3 formed on the substrate sheet, the two metal films 12 and 13 ft.
It is released from the support 4, transferred onto the phosphor layer 7, and is then formed onto the desired metal back layer or phosphor layer 7.

This example will be explained in more detail below.

Board seam 1-4 thickness (normally 3-1007.1m)
The force should be 11.1 degrees <, A range of 5 to 50 Atm is suitable, and in this example, it is 1112 μm. The release layer 3 is made of silicone resin with a thickness of 2 μm. , Aluminum vapor deposition is performed on the release layer 3 in a relatively low vacuum atmosphere, that is, a vacuum atmosphere of about 10-2 to 10-' Torr, and a black metal film 12 with a thickness of 800 angstroms is formed. High vacuum i.e. 10-
A method of performing aluminum evaporation in a high vacuum atmosphere of 6 to 10 Torr to form a white metal film 13 with a metallic luster of 1000 angstroms, and then forming micropores 15 in the metal film transfer sheet. shows.

As shown in FIG. 4, the method for forming micropores is to press a cylindrical electrode 19 provided with micro projections onto the metal film transfer sheet 14 shown in FIG. 3(a) and apply a voltage of 10 to 30 V while rotating. This method generates electrical discharge to form micropores on the surface of the metal film.

Next, in order to clarify the influence of the aperture ratio and size of micropores, we performed metal film transfer by varying the number of micropores formed on the transfer sheet by changing the micropore formation process by electric discharge from 0 times to 6 times. 9. In order to quantitatively understand the state of the formed micropores, the aperture ratio and size of the micropores were measured using an image analysis device, and the micropores with circular aperture ratios and sizes were determined. As shown in FIG. 3(c), an acrylic adhesive (isodecyl methacrylate) 6 is applied to a phosphor layer 7 formed on a glass substrate 9 using a conventional well-known technique. After transferring the black metal film 12 with micropores formed on the phosphor layer 7 and the metal film 13 with micropores with a metallic luster through pressure contact, the support 4 is transferred. After peeling, an anode 10a having a metal back layer was formed on the glass substrate 9, and then this anode was fired at 450°C to decompose the organic matter to form an anode for a color cathode ray tube. ,
At this time, there was a large difference in the surface condition of the metal back layer after firing as shown in Table 4, depending on the state of formation of micropores in the aluminum vapor deposited film.The reason for this is that the force of the micropores formed in advance <, 450℃
If the metal film layer functions as a gas vent hole during firing and can completely prevent swelling of the metal film layer, it will be possible to form a good metal back layer. Numerous blisters appear on the membrane surface.

As is clear from Table 4, if no micropores are made in the aluminum vapor deposited film, blisters will occur over the entire area of the aluminum vapor deposited film.
= In the case of an aluminum vapor-deposited film with micropores created by electrical discharge (
Tomo: When the number of discharges is 1, slight swelling (hereinafter referred to as the margin) and Table 4 of Ichikushi occurred, but when the number of discharges is 2 or more, a good metal-based lupac layer is formed.Especially when the number of discharges is 3 or more, it becomes more stable. A metal back layer is obtained and the average size of the micropores is about 15 μm in diameter, which is 50 μm.
Holes larger than μm lead to a decrease in brightness.

The firing conditions were as follows: temperature increase rate was 10°C/min, and the temperature was maintained at 450°C for 1 hour.

This result shows that if the aperture ratio of micropores is 5% or more, a good metal back layer will be formed after firing.

(Fourth Example) Place the metal film transfer sheet (14) in Fig. 3(a) between two sheets of sandpaper (#1000). Set the pressure roller at a linear pressure of 4 Kg/cm and press the roller. The metal film transfer sheet sandwiched between the two pieces of sandpaper is passed through the sheet 5 times to obtain an aperture ratio of 10% and an average pore diameter of 10 to 20μ.
1. Obtain a metal film transfer sheet having micropores of m. Further, in the same manner as in the third example, the metal film transfer sheet was pressure-transferred onto the phosphor layer 8 formed on the glass substrate 9, and baked at 450°C for 1 hour, resulting in a good metal back with strong adhesion. Obtaining a Layer (Fifth Example) The metal film transfer sheet 14 shown in FIG. 3(a) was heated through #1500 pass carborundum (average flow diameter 1 μm) using a sandblasting device (manufactured by COMCO). Spray at high speed,
Fine pores with an aperture ratio of 89/ and an average pore diameter of 5 to 8 μm are formed.
A Pressure transfer onto the phosphor layer surface as in the fourth example and heat at 450℃1
An aluminum transfer sheet with an aperture ratio of 10% was obtained by electric discharge machining performed on the metal film transfer sheet 14 shown in FIG. 3(a). (Sixth Example) Further, the composition shown in Table 5 was prepared using three ceramic rolls.
The phosphor ink was created by kneading it three times (hereinafter referred to as the margin).The pattern shown in Table 5 was obtained using the black matrix method. Create a layer with the composition shown in Table 6, print it continuously on an aluminum transfer sheet using the same gravure offset method as the phosphor pattern, and create red phosphor ink and blue phosphor ink in the same manner as in Table 6. Then, a green phosphor pattern was printed using the gravure offset method on a fixed metal film transfer sheet with the fine holes formed on the glass substrate.Then, a red phosphor image and a blue phosphor were sequentially printed at predetermined positions.LR1G, 83 After printing a phosphor layer and a black matrix layer on the printed metal film transfer sheet 1B on which a colored phosphor pattern was obtained, an acrylic adhesive (isodecyl methacrylate) was applied to the glass substrate.
A black metal film 12 having a black matrix layer, a phosphor layer, and micropores is formed on the glass substrate by pressing onto the uniformly coated surface with a thickness of microns and then peeling off the substrate sheet of the metal film transfer sheet. An anode was obtained by forming a metal film 13 having a heating condition of 10° C./min.
When fired at 450°C for 1 hour, a good anode was formed. , A metal film transfer sheet with a metal film formed on a black resin layer is transferred to the phosphor layer on the cathode ray tube face plate, and after peeling off the substrate sheet, it is fired to form the anode.Large equipment is not required. This also enables a significant reduction in man-hours and costs.

Furthermore, the black resin layer formed on the metal film suppresses the doming phenomenon and also contributes to countermeasures against secondary electrons, resulting in a significant improvement in image quality.

Furthermore, a phosphor layer and a black matrix layer are formed on a metal film transfer sheet in which a metal film is formed on a black resin layer, and the layers are transferred all at once onto a cathode ray tube face plate, and the substrate sheet is peeled off and then baked. The anode of a color cathode ray tube is easily formed.

Furthermore, the same effect as described above can be obtained by stacking and using a black metal film having micropores and a metal film having micropores.

As described above, the present invention can be applied to phosphor products such as cathode ray tubes and plasma displays to great effect.

[Brief explanation of drawings]

FIG. 1(a) is a cross-sectional view of a metal film transfer sheet according to an embodiment of the present invention, FIG. 1(b) is a process diagram for forming an anode using the metal film transfer sheet of FIG. 1(a), Figure 2(a) is
2(b) is a cross-sectional view of the anode forming sheet, and FIG. 3(a) is a process diagram for forming an anode using the anode forming sheet of FIG. 2(a). The cross-sectional view of the metal film transfer sheet of the example, FIG. 3(b), shows the metal film transfer sheet of FIG. 3(a),
A cross-sectional view of a metal film transfer sheet with micropores formed in it, Figure 3 (
C) is a process diagram for forming an anode using the metal transfer sheet shown in FIG. 4B, and FIG. 4 is a process diagram for forming micropores by electrical discharge machining. DESCRIPTION OF SYMBOLS 1...Metal film, 2...Black resin layer, 3...Release layer, 4...Support, 5...◆Metal film transfer sheet, 6...
- Adhesive layer, 7... Phosphor layer, 8... Black matrix layer, 9... Face plate, 10... Anode, 11... Anode forming sheet, 12... Black metal film 13. ...Metal film, 14...Metal film transfer sheet, 15...◆Minor pores, 16...Metal film transfer sheet with micropores formed, 17...Power supply, 18◆◆-Ground,
19... Electrode.

Claims (15)

[Claims] (1) A metal film transfer sheet comprising a sheet, a black resin layer with a rough surface formed on the sheet, and a metal film formed on the surface of the black resin layer. (2) The metal film transfer sheet according to claim 1, wherein the black resin layer contains at least graphite and carbon. (3) The metal film transfer sheet according to claim 2, wherein the surface of the resin layer is roughened by graphite and carbon contained in the black resin layer. (4) The surface smoothness of the black resin layer is Bekk smoothness: 4
4. The metal film transfer sheet according to claim 1, 2 or 3, wherein the transfer time is 00 seconds or less. (5) Any one of claims 1 to 4, characterized in that the metal film has a thin part that is thinner than the film thickness at the top in the valleys of the irregularities on the surface of the black resin layer. Metal film transfer sheet described in Crab. (6) The metal film transfer sheet according to any one of claims 1 to 5, characterized in that a release layer is interposed between the sheet and the black resin layer. (7) A metal film transfer sheet, characterized in that a black metal film having micropores and a metal film having micropores are formed on a support. (8) The metal film transfer sheet according to claim 7, characterized in that a release layer is formed on one surface of the support. (9) The method for producing a metal film transfer sheet according to claim 7 or 8, wherein the micropores in the metal film are formed by electric discharge. (10) The method for manufacturing a metal film transfer sheet according to claim 7 or 8, wherein the micropores in the metal film are formed by pressing protrusions into contact with the metal film. (11) The method for producing a metal film transfer sheet according to claim 7 or 8, wherein the micropores in the metal film are formed using a sandblasting method. (12) An anode forming sheet, using the metal film transfer sheet according to any one of claims 1 to 8, and further forming a phosphor layer and a black matrix layer on the metal film. (13) Using the metal film transfer sheet according to any one of claims 1 to 8, pressing the metal film on the metal film transfer sheet onto a phosphor layer on a glass substrate via an adhesive, and then A method for producing an anode, which comprises peeling off a film transfer sheet between the sheet and the black resin layer, and transferring the black resin layer and metal film onto the phosphor layer to form an anode. (14) Using the anode forming sheet according to claim 12, pressing the uppermost surface of the anode forming sheet against a glass substrate via an adhesive layer, and then inserting the anode forming sheet between the sheet and the black resin layer. A method for producing an anode, comprising: peeling off the anode forming sheet, and transferring an upper layer from the black resin layer on the anode forming sheet to the glass substrate, thereby forming an anode on the glass substrate, and firing the anode. (15) The anode manufacturing method according to claim 13 or 14, characterized in that in the step of firing the anode, micropores are formed in the metal back layer.