JP2002110036A - Manufacturing method for cathode-ray tube and phosphor panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a cathode-ray tube and a phosphor panel, having good luminescent brightness and stable quality, in the case of a cathode-ray tube wherein a heat absorbing film provided on a conductive reflection film covering a phosphor screen on an inner surface of a panel has lower infrared reflectance than the reflection film has. SOLUTION: An intermediate layer 16 made of an organic material is provided between the conductive reflection film 14 provided on the phosphor screen 11 formed on the inner surface of the panel 10 and the heat absorbing film 15, Thus, even if cracks or the like exist in the reflection film 14, a solvent in the absorbing film 15 provided thereon can be prevented from permeating into the phosphor screen 11, and the surface quality and luminescent brightness of the phosphor screen 11 can be retarded from deteriorating. As a solvent for the material of the intermediate film, a solvent compatible with the absorbing film is used. By holding its affinity with the absorbing film 15 when heated, the reflection film 14 and the absorbing film are bound on each other by a sol-gel reaction, and the intermediate film 16 is burned away by heating in the process of sticking the panel 10 to a funnel part 7 with frit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube having a conductive reflection film and a color selection electrode on a fluorescent screen on the inner surface of a panel.

[0002]

2. Description of the Related Art Conventionally, as this kind of cathode ray tube, for example, a panel having a panel structure shown in FIG. 6 is known. The panel 21 of the cathode ray tube is transparent, and on the inner surface of the panel 21, a phosphor screen 22 composed of phosphor stripes of red, green, and blue and a carbon film filling them is formed. A color image is displayed by selectively landing an electron beam on a phosphor stripe of a predetermined color on the phosphor screen 22 via a color selection electrode 25.

On the fluorescent screen 22, an aluminum conductive reflection film 23 called a metal back is provided on the fluorescent screen 22 in a state of covering the fluorescent screen 22 and further covering the outer periphery of the fluorescent screen 22. Is formed. This conductive reflection film 23
Is formed of aluminum having a high light reflectance and electron transmittance, so that when the fluorescent screen 22 emits light,
The light emitted toward the electron gun (not shown) is reflected toward the panel 21 to enhance the display brightness and to stabilize the potential of the fluorescent screen 22.

Since aluminum has a high reflectance to heat, if the conductive reflection film 23 is exposed, the color selection electrode 2 heated by the collision of an electron beam is exposed.
The radiant heat from 5 is reflected by the conductive reflection film 23, so that the color selection electrode 25 is further heated.

[0005] When the color selection electrode 25 is heated and thermally expanded in this way, the correspondence between the color selection electrode 25 and the phosphor stripe on the phosphor screen 22 fluctuates, and the electron beam mislandes on the phosphor screen 22. As a result, a color shift occurs.

Therefore, conventionally, a heat absorbing film 24 is formed on the conductive reflecting film 23 so that the heat radiated from the color selection electrode 25 is absorbed by the heat absorbing film 24 and the conductive reflecting film 23 is formed.
A method is employed in which reflection and radiation of heat from the color selection electrode 25 are suppressed to suppress thermal expansion of the color selection electrode 25.

As such an example, the present applicant has disclosed in
No. 00-208044, Japanese Patent Application No. 11-127933
(Filed on May 10, 1999), Japanese Patent Application No. 11-1279
34 (filed on May 10, 1999) (hereinafter referred to as the prior application), a silica sol, which is a product obtained by hydrolyzing silicon alkoxide, and a dispersion liquid in which fine carbon powder is dispersed are electrically conductive. It has been proposed to form a heat absorbing film which is applied directly on a reflective film and fired.

[0008]

However, in the cathode ray tube of the prior application described above, since the heat absorbing coating material is applied directly on the conductive reflecting film 23, pinholes and cracks are generated in the conductive reflecting film. In this case, the applied heat-absorbing film solvent easily penetrates the fluorescent screen 22 through the pinholes and cracks to easily cause deterioration of the surface quality and emission luminance characteristics, and it may be difficult to obtain stable quality. It was found that there was room for improvement.

Accordingly, an object of the present invention is to provide a light emitting device having a high light emission luminance.
An object of the present invention is to provide a method of manufacturing a cathode ray tube and a phosphor panel of stable quality.

[0010]

That is, according to the present invention, a heat absorbing film having an infrared reflectance lower than that of the conductive reflective film is provided on the conductive reflective film covering the fluorescent surface on the inner surface of the panel. When manufacturing a cathode ray tube, a step of forming an intermediate film at an intermediate position between the phosphor screen and the heat absorbing film, and the heat absorbing film on the conductive reflective film with the intermediate film provided Forming a cathode ray tube (hereinafter referred to as
This is referred to as a cathode ray tube manufacturing method of the present invention. ).

According to the method for manufacturing a cathode ray tube of the present invention, the heat absorbing film is formed on the conductive reflecting film in a state where the intermediate film is provided at an intermediate position between the phosphor screen and the heat absorbing film. The film blocks the phosphor screen and the heat absorbing film, and therefore, even if pinholes or cracks are present in the conductive reflective film,
It is possible to prevent the solvent of the heat absorbing film formed on the conductive reflection film after the formation of the intermediate film from penetrating into the fluorescent screen. As a result, it is possible to provide a method of manufacturing a cathode ray tube having a stable quality with no color shift while preventing deterioration of the surface quality of the phosphor screen and light emission characteristics.

The present invention also provides a phosphor panel in which a heat absorbing film having an infrared reflectance lower than that of the conductive reflecting film is provided on the conductive reflecting film covering the fluorescent surface on the inner surface of the panel. In doing so, a step of forming an intermediate film at an intermediate position between the phosphor screen and the heat absorbing film, and a step of forming the heat absorbing film on the conductive reflective film with the intermediate film provided (Hereinafter, referred to as a phosphor panel manufacturing method of the present invention).

According to the method of manufacturing a phosphor panel of the present invention, since it is based on the above-described method of manufacturing a cathode ray tube of the present invention, the same effects as those of the method of manufacturing a cathode ray tube of the present invention can be obtained. A method for manufacturing a phosphor panel with good reproducibility can be provided.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-described method for manufacturing a cathode ray tube and a phosphor panel according to the present invention, it is preferable to form the heat absorbing film after forming the intermediate film on the conductive reflecting film. By providing this intermediate film, it is possible to function as a barrier layer for the conductive reflective film at the time of applying the heat absorbing film solution.

After the material for the heat absorbing film is applied to a thickness of 200 to 300 nm on the organic intermediate film as the intermediate film, a heat treatment is performed to form the heat absorbing film, and the intermediate film is burned. It is desirable to make it.

As a method of applying the intermediate film solution, a spin coating method, a spray method, a dipping method, a brushing method or the like can be adopted. In the case of coating on the conductive reflective film on the inner surface of the cathode ray tube, a spray method can be suitably performed to make the thickness of the obtained film uniform.

In this case, it is desirable that the intermediate film be burned off during heating in the step of frit attaching the panel to the funnel portion. However, by burning off the intermediate film in the process of manufacturing the cathode ray tube, the binding between the heat absorbing film and the conductive reflective film is not hindered, and the withstand voltage is not deteriorated. In this heat treatment, the intermediate film may be burned off in advance in a separately provided heat treatment step.

Then, the heating temperature is set at 350.degree.
Desirably, the temperature is 0 ° C. By this heating, the intermediate film is burned off, and the dry gel paint to be applied as a heat absorbing film thereafter is baked, so that a structure having a binding property with the conductive reflective film as a heat absorbing film made of an oxide can be obtained.

In this case, in order to burn off the cathode ray tube in the heat treatment step, the intermediate film is formed of a resin-based dispersion solution, and an epoxy resin, a phenol resin,
Urethane resin, melamine resin, butyral resin, vinyl acetate resin, ionomer resin, nosobutylene-maleic anhydride copolymer resin, polyvinyl alcohol, using at least one selected from the group consisting of polyvinylenepyrrolidone and wax, on this It is desirable as a material having good compatibility with the solvent for the heat absorbing film to be formed.

Further, it is desirable that the intermediate film is formed to a thickness of 20 to 1000 nm. If the film thickness is less than 20 nm, for example, it is difficult to evenly coat the conductive reflection film with a barrier, and it is difficult to exert an intermediate film effect. There is a possibility that the binding to the reflective film may be reduced, and the heat absorbing film may be lifted or cracked to cause a reduction in reliability.

It is preferable that after applying the material for the heat absorbing film, the heat absorbing film is formed by a sol-gel reaction.

In this case, it is preferable that the material of the heat absorbing film contains at least one element selected from the group consisting of silicon, manganese, aluminum and antimony tin, and a heat absorbing material.

It is preferable that the heat absorbing film is formed of the oxide of the element and the heat absorbing material, and that the heat absorbing material is carbon fine powder.

It is preferable that the intermediate film is formed on at least the conductive reflection film of the effective screen portion which is the formation region of the heat absorption film and the formation region of the phosphor screen.

Hereinafter, embodiments of the present invention will be specifically described.

FIG. 3 is a perspective view showing a color cathode ray tube according to the present embodiment, partially cut away. The color cathode ray tube 1 has an electron gun 3 and a color selection electrode 4 having a plurality of rows of stripe-shaped slits in a bulb 2 having a substantially flask shape as a whole and having a vacuum state inside. It was done. In this example, an aperture grill type electrode is used as the color selection electrode 4.

The bulb 2 includes a neck portion 6 on which the electron gun 3 is disposed, a funnel portion 7 extending from the neck portion 6, a face portion 8 mainly forming a screen surface, and the face portion 8 A panel portion (hereinafter, sometimes referred to as a panel) 10 is constituted by a skirt portion 9 formed by being raised from the periphery of the panel.

The color selection electrode 4 is disposed inside the panel section 10. After the color selection electrode 4 is disposed inside the panel section 10, the panel section 10 and the funnel section 7 are welded and joined to form a seal. By forming the part 12, the valve 2
Is assembled.

A fluorescent screen 11 is formed on the inner surface of the glass surface forming the face portion 8. This fluorescent screen 11
The red, green, and blue phosphors are burned into stripes in the vertical direction to form phosphor stripes, and the phosphor stripes are regularly arranged in the horizontal direction. Note that carbon stripes are provided between the phosphor stripes, thereby improving the contrast ratio of the phosphor screen 11.

Therefore, in the color cathode ray tube 1, the electron beam emitted from the electron gun 3 in the neck portion 6 passes through the color selection electrode 4, and the fluorescent light of the color fluorescent screen 11 formed on the inner surface of the panel 10 is obtained. Each color of the phosphor stripe emits light on the body stripe.

In order to obtain good emission characteristics of the color cathode ray tube, an organic intermediate film (not shown) is formed on the phosphor screen 11 to smooth the unevenness of the surface formed by the phosphor stripes. On the organic intermediate film, a conductive reflection film (not shown) is formed by heating and depositing aluminum, as shown in FIG.

As described above, the formation of the two-layer film of the organic intermediate film and the heat absorbing film on the conductive reflection film is a characteristic configuration of the present embodiment.

FIG. 1 shows a method of manufacturing the phosphor panel of the present embodiment having such a configuration. FIG. 1 is a schematic sectional view showing a part of the face portion of the panel in the above-described cathode ray tube (see FIG. 3).

First, as shown in FIG. 1B, the above-described red, green and blue phosphor stripes are sequentially and repeatedly arranged in one direction on the inner surface of the panel 10 shown in FIG. Fluorescent screen 1 with carbon stripes between each stripe
Form one.

Next, as shown in FIG. 1C, the conductive reflection film 1 is formed on the phosphor screen 11 by heating evaporation of aluminum.
4 is formed to a thickness of, for example, 250 mm.

Next, as shown in FIG. 1D, an intermediate film 16 is formed on the conductive reflection film 14 to a thickness of, for example, 100 nm by coating by a spray method or the like. As a method of forming this, after forming the conductive reflective film 14 on the panel 10, the panel 10 is taken out from the evaporation heating furnace, and the intermediate film 16 is formed.
Is uniformly spray-coated on the conductive reflection film 14 and dried.

The intermediate film 16 is burned out in the heat treatment step of the color cathode ray tube 1, and is therefore made of an organic material such as epoxy resin, phenol resin, urethane resin, melamine resin, butyral resin, vinyl acetate resin, ionomer resin, It is possible to use at least one of isobutylene-maleic anhydride copolymer resin, polyvinyl alcohol, polyvinylpyrrolidone, and wax, and to use, for example, pure water as a solvent, because the phase with the solvent of the heat absorbing film formed thereon in the next step It is preferable in terms of good solubility.

Next, as shown in FIG. 1C, a solution for the heat absorbing film 15 is uniformly applied on the organic intermediate film 16 formed in the previous step to a thickness of, for example, 200 nm by a spray method and dried. .

The heat absorbing film 15 contains a heat absorbing material and SiO ₂ functioning as a binder. As the heat absorber, fine carbon powder such as graphite or carbon black can be suitably used. Further, as a forming method, for example, using pure water as a solvent,
A heat absorbing film can be formed by dispersing the silica sol and a heat absorbing agent such as carbon fine powder to form a dispersion, and applying and drying the dispersion.

Then, as shown in FIG. 1F, the intermediate film 16 formed in the previous step is burned off by heat treatment to bind the conductive reflection film 14 and the heat absorption film 15 together.

The above-mentioned heat treatment is performed in the step of attaching a frit between the panel 10 of the cathode ray tube 1 and the funnel 7.
By heating at an oxidizing atmosphere temperature of 450 ° C. for 20 minutes, the intermediate film 16 is completely burned off, and the silica sol in the heat absorbing film 15 is turned into an oxide film, so that the conductive reflective film 14 is formed.
It can be firmly bound to the entire upper surface. That is,

Embedded image As described above, the silica sol reacts with the surface of the aluminum conductive reflective film 14 by a sol-gel reaction, and the heat absorbing film 15 is formed at the interface with the conductive reflective film 14.

Embedded image And firmly bind the heat absorbing material by itself.

Thereafter, a color cathode ray tube manufacturing process is performed in the same manner as in the prior art, and the color cathode ray tube of the present embodiment can be manufactured.

With respect to the color cathode ray tube of the present embodiment, a material in which the material of the organic intermediate film 16 is changed and a heat absorbing film 15 similar to the above is formed thereon is taken as a specific example. Color selection electrode 4 using other examples as comparative examples
The rate of improvement of color shift due to thermal deformation, emission luminance characteristics, adhesion, cracks and floating were tested.

As a specific example 1, as described above, the intermediate film A is formed of an organic material having an affinity with the heat absorbing film at the time of heating, and as a specific example 2, an organic material having an inferior affinity with the heat absorbing film is formed. Thus, an intermediate film B was formed. In addition, as shown in FIG. 4, a device having only a conductive reflective film is referred to as Comparative Example 1, and as shown in FIG. 5, a device having a heat absorbing film formed without an intermediate film is referred to as Comparative Example 2.

The color misregistration rate and the light emission luminance are shown assuming that the color misregistration and the light emission luminance in Comparative Example 1 when only the conductive reflective film is used are 100%, and the color misregistration and the light emission luminance ratio when the heat absorbing film is provided. Was. Table 1 shows the results.

[Table 1] Table 1

The thickness of the conductive reflection film in each example in Table 1 was 250 nm, and the heat absorbing film in each example except Comparative Example 1 was a dispersion of fine carbon powder in silica sol, and the thickness was 200 nm. The intermediate film A of the specific example 1 has a thickness of 100 nm as in the above embodiment, and the intermediate film B of the specific example 2 has a thickness of 100 nm using an acrylic emulsion B-74 (manufactured by Nippon Acrylic Chemicals, Inc.). It was formed thick.

From Table 1 above, in the case of Comparative Example 2 in which the heat absorbing film was formed without the intermediate film, the light emission was caused by the penetration of the heat absorbing film solvent from pinholes and cracks formed on the conductive reflective film. It can be seen that while the luminance is greatly deteriorated, the specific example 1 of the two-layer structure with the intermediate film A that maintains the affinity with the heat absorbing film can greatly improve the light emission luminance characteristics and does not degrade other characteristics. Was.

Further, an intermediate film B having an inferior affinity to the heat absorbing film
It was found that, in the specific example 2 using No. 2, the adhesiveness of the film was somewhat inferior, and cracks and floating were likely to occur. That is, since the affinity of the organic material with the heat absorbing film is inferior, the solvent of the intermediate film that has permeated the pinholes and the like of the conductive reflecting film remains without being burned off even after the heat treatment, thereby increasing the electron beam transparency. It can be said that this has an adverse effect and tends to lower the luminance.

According to the present embodiment, the conductive reflection film 14
By forming an intermediate film 16 made of an organic polymer which evaporates in a heating step at the time of flip attachment between the panel 10 and the funnel portion 7 between the heat absorbing film 15 provided thereon, the heat absorbing film solvent Penetration into the phosphor screen 11 can be suppressed, whereby color shift can be reliably suppressed without deteriorating light emission characteristics and surface quality. Furthermore, a high-quality color cathode ray that prevents cracks and floating, has good withstand voltage reliability, and has little color shift, with respect to the conductive reflective film 14 that will ultimately be the binding surface of the heat absorbing film 15. Tubes can be made. Therefore, the solvent of the heat-absorbing film penetrates the phosphor screen through the pinholes and cracks of the conductive reflection film, which causes a decrease in the quality and emission luminance of the phosphor screen of the cathode ray tube.
The weakness of the prior application can be eliminated.

The above embodiment can be modified based on the technical concept of the present invention.

For example, as shown in FIG. 2, an intermediate film 16 can be provided between the phosphor screen 11 and the conductive reflection film 14. This makes it possible to prevent the solvent of the heat absorbing film 15 from penetrating into the fluorescent screen 11 even if cracks or the like exist in the conductive reflective film 14.

Further, the film thickness of each part in the above-described embodiment, the solvent to be used, and the like can be appropriately implemented other than the embodiment.

In the heat treatment after the formation of the intermediate film 16 and the heat absorption film, a heat treatment step is provided separately from the step of attaching the flip of the funnel portion 7, and after the heat treatment, the panel 10 and the funnel portion 7 are sealed by the seal portion 12. They can also be combined.

[0054]

As described above, the method for manufacturing a cathode ray tube and a phosphor panel according to the present invention provides a method for manufacturing a cathode ray tube and a phosphor panel on an electroconductive reflective film in a state where an intermediate film is provided at an intermediate position between a phosphor screen and a heat absorbing film. Since the heat absorbing film is formed, the interlayer between the phosphor screen and the heat absorbing film is blocked by the intermediate film. Therefore, even if pinholes or cracks are present in the conductive reflective film, the conductive film remains conductive after the intermediate film is formed. It is possible to suppress the penetration of the solvent of the heat absorbing film formed on the reflective film into the fluorescent screen. As a result, it is possible to provide a method of manufacturing a cathode ray tube having a stable quality with no color shift while preventing deterioration of the surface quality of the phosphor screen and light emission characteristics.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a manufacturing process of a phosphor panel of a cathode ray tube according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view showing a modification.

FIG. 3 is a perspective view showing the cathode ray tube according to the embodiment, with a part cut away.

FIG. 4 is a schematic sectional view of a phosphor panel showing a comparative example.

FIG. 5 is a schematic sectional view of a phosphor panel showing another comparative example.

FIG. 6 is a sectional view showing a phosphor panel of a cathode ray tube according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cathode tube, 2 ... Bulb, 3 ... Electron gun, 4 ... Color selection electrode, 6 ... Neck, 7 ... Funnel, 8 ... Face, 9 ... Skirt, 10 ... Panel, 11 ... Fluorescent screen, 1
2 ... seal part, 14 ... conductive reflection film, 15 ... heat absorption film,
16 ... Interlayer

Claims (26)

[Claims] When manufacturing a cathode ray tube having a heat absorbing film having an infrared reflectance lower than that of the conductive reflective film on a conductive reflective film covering a fluorescent surface on an inner surface of the panel, Forming an intermediate film at an intermediate position between a surface and the heat absorbing film; and forming the heat absorbing film on the conductive reflective film with the intermediate film provided. Production method. 2. The method according to claim 1, wherein the heat absorbing film is formed after forming the intermediate film on the conductive reflecting film. 3. The method according to claim 1, wherein a material for the heat absorbing film is applied on the organic intermediate film as the intermediate film, and then heat treatment is performed to form the heat absorbing film and burn off the intermediate film.
3. The method for manufacturing a cathode ray tube described in 1. above. 4. The method for manufacturing a cathode ray tube according to claim 3, wherein said intermediate film is burned off at the time of heating in a frit attaching step of said panel to a funnel portion. 5. The method for manufacturing a cathode ray tube according to claim 3, wherein the heating temperature is 350 ° C. to 500 ° C. 6. The method for manufacturing a cathode ray tube according to claim 1, wherein the intermediate film is formed of a resin-based dispersion solution. 7. The resin-based dispersion solution includes epoxy resin, phenol resin, urethane resin, melamine resin, butyral resin, vinyl acetate resin, ionomer resin, nosobutylene-maleic anhydride copolymer resin, polyvinyl alcohol, polyvinylene pyrrolidone and The method for producing a cathode ray tube according to claim 6, wherein at least one selected from the group consisting of wax is used. 8. The method for manufacturing a cathode ray tube according to claim 1, wherein said intermediate film is formed to a thickness of 20 to 1000 nm. 9. The heat absorbing film is formed by a sol-gel reaction after applying the heat absorbing film material.
3. The method for manufacturing a cathode ray tube described in 1. above. 10. The cathode ray according to claim 1, wherein the material of the heat absorbing film contains at least one element selected from the group consisting of silicon, manganese, aluminum and antimony tin, and a heat absorbing material. Pipe manufacturing method. 11. The method for manufacturing a cathode ray tube according to claim 10, wherein the heat absorbing film is formed of an oxide of the element and the heat absorbing material. 12. The method according to claim 10, wherein carbon fine powder is used as the heat absorbing material. 13. The manufacture of the cathode ray tube according to claim 1, wherein the intermediate film is formed on at least the conductive reflection film of the effective screen portion which is the formation region of the heat absorption film and the formation region of the phosphor screen. Method. 14. When manufacturing a phosphor panel in which a heat absorbing film having an infrared reflectance lower than that of the conductive reflective film is provided on the conductive reflective film covering the fluorescent surface on the inner surface of the panel, A phosphor comprising: a step of forming an intermediate film at an intermediate position between a phosphor screen and the heat absorbing film; and a step of forming the heat absorbing film on the conductive reflective film with the intermediate film provided. Panel manufacturing method. 15. The method of manufacturing a phosphor panel according to claim 14, wherein the heat absorbing film is formed after forming the intermediate film on the conductive reflection film. 16. The method according to claim 14, wherein a material for the heat absorbing film is applied on the organic intermediate film as the intermediate film, and then heat treatment is performed to form the heat absorbing film and burn off the intermediate film. Of manufacturing a phosphor panel. 17. The method for manufacturing a phosphor panel according to claim 16, wherein the intermediate film is burned off during heating in a step of frit attaching the panel to a funnel portion. 18. The temperature of the heating is 350 ° C. to 500 ° C.
The method for manufacturing a phosphor panel according to claim 16, wherein: 19. The method according to claim 14, wherein the intermediate film is formed of a resin-based dispersion solution. 20. An epoxy resin, a phenol resin, a urethane resin, a melamine resin,
Butyral resin, vinyl acetate resin, ionomer resin,
2. The method according to claim 1, wherein at least one selected from the group consisting of nosobutylene-maleic anhydride copolymer resin, polyvinyl alcohol, polyvinylenepyrrolidone and wax is used.
10. The method for manufacturing a phosphor panel according to item 9. 21. The method for manufacturing a phosphor panel according to claim 14, wherein said intermediate film is formed to a thickness of 20 to 1000 nm. 22. The method according to claim 16, wherein the heat absorbing film is formed by a sol-gel reaction after applying the heat absorbing film material. 23. The fluorescent material according to claim 14, wherein the material of the heat absorbing film contains at least one element selected from the group consisting of silicon, manganese, aluminum and antimony tin, and a heat absorbing material. Body panel manufacturing method. 24. The method of manufacturing a phosphor panel according to claim 23, wherein the heat absorbing film is formed of an oxide of the element and the heat absorbing material. 25. The method for manufacturing a phosphor panel according to claim 23, wherein carbon fine powder is used as the heat absorbing material. 26. The phosphor panel according to claim 14, wherein the intermediate film is formed on at least the conductive reflection film of the effective screen portion which is the formation region of the heat absorption film and the formation region of the phosphor screen. Production method.