JPH10228864A - Manufacture of rear plate for plasma display panel and composition for forming thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economically provide a rear plate of a PDP(plasma display panel) in which RGB phosphors are not mixed up, pure RGB light rays are emitted, and high quality images can be displayed, without wasting phosphors. SOLUTION: This method is carried out by filling gaps between neighboring barrier ribs 2 of a plurality of the barrier ribs formed on a substrate 1 with a positive photosensitive resin 3 and exposing the resin through a photomask having a desired pattern, and then developing and removing the exposed regions 6, and filling the gaps between neighboring barrier ribs 2, from which the positive photosensitive resin 3 is removed, with a phosphor composition 7. Next, the filled phosphor composition 7 is fired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a back plate of a plasma display panel (PDP) and a composition for forming the back plate.

[0002]

2. Description of the Related Art In general, a PDP has a structure in which a pair of electrodes arranged regularly on two opposing glass substrates are provided, and a gas mainly composed of Ne or the like is sealed between them. Then, a voltage is applied between these electrodes, and a discharge is generated in minute cells around the electrodes, so that each cell emits light to perform display. In order to display information, regularly arranged cells are selectively caused to emit light. This PDP has a direct current type (DC type) in which electrodes are exposed to the discharge space and an alternating current type (A) in which electrodes are covered with an insulating layer.
C type), and both types are further classified into a refresh driving method and a memory driving method according to differences in display functions and driving methods.

FIG. 5 shows an example of the configuration of an AC type PDP. In this figure, the front plate 51 and the back plate 52 are shown separated from each other. As shown, the front plate 51 and the back plate 52 made of glass are arranged in parallel with each other and face each other. On the front side of the face plate 52, a barrier rib 53 standing upright is fixed, and the front face plate 51 and the rear face plate 52 are held at a constant interval by the barrier rib 53. On the back side of the front plate 51, a composite electrode composed of a sustain electrode 54, which is a transparent electrode, and a bus electrode 55, which is a metal electrode, is formed in parallel with each other, and a dielectric layer 56 is formed to cover this. , And a protective layer 57 (M
gO layer).

On the front side of the back plate 52, address electrodes 58 are formed between the barrier ribs 53 so as to be orthogonal to the composite electrodes and parallel to each other. A phosphor layer 59 is provided to cover. In this AC type PDP, a predetermined voltage is applied from an AC power source between composite electrodes on the front plate 51 to form an electric field.
Discharge is performed in each cell as a display element partitioned by 2 and the barrier rib 53. Then, the phosphor layer 59 is caused to emit light by the ultraviolet light generated by the discharge, and the light transmitted through the front plate 51 is visually recognized by the observer.
Conventionally, as a method for applying the phosphor layer 59, a photolithography method is mainly used.

[0005]

In the above conventional photolithography method, a paint, paste or flexible film containing a phosphor emitting a specific color and a photosensitive binder is filled between all the ribs of RGB, After the filling, ultraviolet light is irradiated through a photomask corresponding to a specific color, the exposed portion is cured, and the non-exposed portion is removed by a developer to form a phosphor layer of a specific color. This operation is performed once for each of the phosphor compositions of three colors of RGB, and as a result, cells covered with the phosphor layers of three colors of RGB are formed.

However, in the case of the above conventional method, FIG.
As shown in A, first, a phosphor paste for emitting red light is applied between barrier ribs 63 formed on a substrate 62 and dried to form a phosphor layer. FIG. 6A shows a state in which the phosphor paste has been dried and before firing. Next, when exposure and development are performed through a predetermined photomask, R phosphors (residual phosphors 64 ') often remain in areas other than the R regions 64 due to poor development, as shown in FIG. 6B. In the next step of forming the G phosphor layer 65, the phosphor paste is applied and dried, and is similarly exposed and developed.
In some cases, the G phosphor may remain in the region other than the G region due to poor development (residual phosphor 65 '). Further, although not shown, a similar problem occurs in the formation of the B phosphor layer. .

As described above, when other phosphors are mixed into each of the RGB regions, the light emitted from each of the RGB cells becomes mixed light instead of pure RGB, and therefore, the image to be displayed is There is a problem that quality is reduced. It is extremely difficult to solve the above problems by adjusting the sensitivity of the photosensitive composition containing the phosphor, the exposure amount, and the developability of the developer. That is, the phosphor layer applied first among the phosphor layers of the three colors undergoes three development processes before the completion of the formation of the RGB cells, and the phosphor layer applied second time has two times. After undergoing development, the phosphor layer applied for the third time undergoes one development. Therefore, in order to prevent the R phosphor layer from remaining in other regions, it is sufficient to improve the developability of the R phosphor layer, but in this case, the R phosphor layer becomes three times. It cannot withstand development processing.

On the other hand, when the developer resistance of R is increased, the R phosphor layer remains in other regions as described above. Such a problem similarly occurs in the phosphor layer formed second time. Therefore, in the conventional method of forming the phosphor layer by the photolithography method, the above points are a major problem. As still another problem, in the conventional photolithography method, a phosphor paste used for forming a phosphor layer needs to be photosensitive. Therefore, since the photosensitive resin constituting these phosphor pastes needs to be burned off when the phosphor layer is formed, the type of photosensitive resin used is limited. Further, at the time of the above-mentioned baking, there may be a disadvantage that the phosphor layer is thermally contracted and the phosphor is separated from the substrate.

A more serious problem is that when the phosphor layer of R is formed, two-thirds of the phosphor paste used is removed by development, and about one-half of the phosphor paste of G is removed by development. Further, in forming the phosphor layer of B, a considerable amount of the paste is developed and removed, and the cost of recovering the phosphor from the removed paste is large, and the product cost of the entire back plate becomes extremely high. There is a problem. Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to achieve a high quality image display by emitting pure RGB light without mixing RGB phosphors.
The objective is to provide a DP backplate economically without wasting phosphor.

[0010]

The above object is achieved by the present invention described below. That is, the present invention provides a step of filling a positive photosensitive resin between a plurality of barrier ribs formed on a substrate, a step of exposing through a photomask having a desired pattern, a step of developing and removing exposed areas, Filling a phosphor composition between the barrier ribs from which the photosensitive resin has been removed, baking the filled phosphor composition, and a method for manufacturing a back plate of a plasma display panel, comprising: It is a composition for forming a face plate.

According to the present invention, a PDP back plate that emits pure RGB light without mixing of RGB phosphors and can display high-quality images can be economically manufactured without wasting phosphors. Can be provided. Further, the positive photosensitive resin used in the present invention is used to temporarily saturate the gap between the barrier ribs, and forms a phosphor layer of three colors. Since no resin is present, there is no need to select a resin that is easily burned off by firing, and any positive photosensitive resin can be used. Further, since the phosphor composition used in the present invention does not need to be photosensitive, it is possible to use, as a resin component of the composition, a material that is advantageous for firing, for example, a resin that easily burns off, such as a cellulose-based resin. .

[0012]

Next, the present invention will be described in more detail with reference to preferred embodiments. A feature of the present invention lies in a method of forming a phosphor layer on a back plate of a PDP shown in FIG. Reference is made to FIGS. 1-4, which illustrate schematically the method of the invention.
FIG. 1A shows a number of barrier ribs 2 formed on a substrate 1.
3 shows a state where the positive photosensitive composition 3 is filled. The substrate 1 and the rib 2 are formed from a conventionally known material by a conventionally known method, and there is no special point in their shapes.

The positive photosensitive resin 3 filled between the barrier ribs 2 may be in the form of a flexible film, a paste, or any other form. For example, in the case of a film-shaped photosensitive resin, A photosensitive resin film can be placed on the barrier ribs 2 and press-fitted between the ribs 2 by applying pressure. When a paste-type positive photosensitive resin containing a solvent is used, when the paste is filled between the barrier ribs and dried, the surface of the filled resin layer is not smooth due to evaporation of the solvent, and the gap between the barrier ribs is reduced. Although the surface tends to be concave, it is only necessary that the bottom of the concave shape is at a position higher than the top of the barrier rib, and it is essential that the surface of the filled and dried positive photosensitive resin is smooth. Absent.

As the positive photosensitive resin used in the above, known resins can be used as they are, for example, novolak resin, polymethyl vinyl ketone, polyvinyl phenyl ketone, polysulfone, p-diazodiphenylamine / paraformaldehyde condensation polymer and the like. Diazonium salts, 1,
Known positive photosensitive resins such as quinonediazides such as 2-naphthoquinone-2-diazide-5-sulfonic acid isobutyl ester and the like, polymethylmethacrylate, polyphenylmethylsilane, and polymethylisopropenylketone can be used. Examples of the positive photosensitive resin as a product include NPR9100 (manufactured by Nagase Electronic Chemical Co., Ltd.) and OF
PR800 (manufactured by Tokyo Ohka Kogyo Co., Ltd.) and the like are commercially available, and any of them can be used in the present invention.

FIG. 1B shows a state in which the photosensitive resin 3 filled between the barrier ribs 2 is exposed to light 5 of an appropriate wavelength via a photomask 4 of a predetermined shape. By this exposure, the exposed area 6 becomes soluble in a developing solution, and by developing with an appropriate developing solution, a space 6 is formed between barrier ribs at predetermined positions as shown in FIG. 1C. FIG. 1D
Is formed in the space 6 formed above by the phosphor composition 7 (for example,
(Paint-like, paste-like, film-like, etc.) (the illustrated example is an example of a red light-emitting phosphor).
Next, as shown in FIG. 2A, the surface is polished as necessary to smooth the entire surface. This step is not essential. Next, as shown in FIG. 2B, the photosensitive resin layer 3 is exposed through the photomask 4 in the same manner as described above. By developing the exposed region 3 in the same manner as described above, a region 8 where a green light emitting phosphor layer is to be formed as shown in FIG. 2C is prepared, and the developed region 8 is filled with a green light emitting phosphor composition 9. (Figure 2
D).

Further, as shown in FIG. 3A, the surface is smoothed as required. Next, by exposing the entire surface of the photosensitive resin 3 without exposure through a photomask, the remaining photosensitive resin 3 becomes developable, and is developed and removed in the same manner as described above to form a region 10 where a blue light emitting phosphor layer is to be formed. (FIG. 3C), the space is filled with a phosphor composition 11 that emits blue light. Then Figure 4
A, as shown in FIG.
The height of the barrier ribs is equalized by polishing until the top of the rib is reached. By making the height of the barrier ribs uniform, the adhesion of the finally formed PDP to the front plate is improved. After the phosphor compositions 7, 9, and 11 emitting red, green, and blue light are filled between the barrier ribs 2, respectively, the whole is subjected to a baking treatment to decompose and remove organic substances in the composition, as shown in FIG. 4B. Barrier rib 2
The phosphor layers 7, 9, 11 are formed on the surface of the cell formed by the substrate 3 (the address electrodes are omitted in FIGS. 1 to 4).

It is preferable that the positive photosensitive resin and / or the phosphor composition used in the present invention is filled between the ribs with a thickness exceeding the height of the ribs as shown in the figure. If the surface of the positive-type photosensitive resin and / or the phosphor composition filled between the ribs is lower than the top of the rib, when the phosphor composition of the second color is filled after forming the phosphor layer of the first color, 2 The phosphor composition of the first color is also filled on the phosphor composition layer of the first color, and the filled phosphor composition of the second color cannot be removed, and the phosphor is finally fired. Is produced. On the other hand, if the positive photosensitive resin and the phosphor composition are filled between the ribs with a thickness exceeding the height of the ribs as shown in the drawing, there is no mixing of the phosphor composition and the filling is performed. Even if there is some mixing in the upper layer of the layer, polishing the entire surface as shown in FIG. 4A can completely remove the mixed portion of the phosphor composition and prevent the final phosphor mixing. it can.

Further, in the method of the present invention, the top of the rib is easily polished. That is, when manufacturing a PDP, the height of the barrier ribs formed on the back plate must be uniform. Therefore, conventionally, the top of the rib was polished in the longitudinal direction of the rib using an expensive polishing tape. Further, when the ribs are polished by polishing, a polishing force is also applied from the lateral direction of the ribs. Therefore, in the case of polishing polishing, a pad is filled between the ribs and polished. However, in the present invention. Since the phosphor composition is filled between the ribs as shown in FIG. 4A, there is an advantage that the ribs are not chipped even by horizontal polishing by polishing.

As described above, the positive photosensitive resin used in the present invention is relatively inexpensive because it has been widely used in various fields from the past. However, in order to further reduce the cost, the positive photosensitive resin is used. A filler that does not impair the photosensitivity of the photosensitive resin can be added to the photosensitive resin. Examples of these fillers include plastic pigments made of polyethylene, polypropylene, polymethyl methacrylate and the like, glass materials such as fine glass beads and glass powder, and relatively transparent extender pigments such as silica, alumina and calcium carbonate. The amount of these fillers to be added to the positive photosensitive resin is 1 to 90 parts by weight, preferably 5 to 80 parts by weight, per 10 parts by weight of the photosensitive resin. And the phosphor composition used for forming the phosphor layer is, as in the prior art,
Since it is not filled between the barrier ribs in other areas, it does not mix with phosphors of other colors, and is not removed by the developing process, so that almost all the amount is effectively used, so that it is very economical. It is a target.

The phosphor composition used in the present invention does not need to be patterned by exposing and developing a layer formed by the composition. Therefore, the composition may be photosensitive. Need not be. The phosphor used in the present invention, but are not limited to, the rare earth oxyhalide such as a host, preferably those activated by an activator of the mother, for example, as the ultraviolet-excited phosphor, Y ₂
O ₃ : Eu, YVO ₄ : Eu, (Y, Gd) BO ₃ : Eu
(Red above), Zn ₂ GeO ₂ : Mn, BaAl ₁₂ O ₁₉ :
Mn, Zn ₂ SiO ₄ : Mn, LaPO ₄ : Tb (green above), Sr ₅ (PO ₄ ) ₃ Cl: Eu, BaMgAl ₁₄ O
₂₃ : Eu ²⁺ , BaMgAl ₁₆ O ₂₇ : Eu (above blue) and the like, and other phosphors include Y ₂ O ₃ S: E
u, γ-Zn ₃ (PO ₄ ) ₂ : Mn, (Zn, Cd) S:
Ag + In ₂ O ₃ (more than red), ZnS: Cu, Al, Z
nS: Au, Cu, Al, (Zn, Cd) S: Cu, A
1, Zn ₂ SiO ₄ : Mn, As, Y ₃ Al ₅ O ₁₂ : Ce,
Gd ₂ O ₂ S: Tb, Y ₃ Al ₅ O ₁₂ : Tb, ZnO: Zn
(Green above), ZnS: Ag + red pigment, Y ₂ SiO ₃ :
Ce (or more, blue) or the like can be used. Of course, two or more kinds of these phosphors can be used in combination.

The phosphor composition used in the present invention is prepared by forming the above-mentioned phosphor into a paste by using a resin binder and a small amount of a solvent, or kneading the above-mentioned phosphor into a thermoplastic resin and molding it into a sheet or film. Any of the above can be used. The resin binder may be photosensitive or a non-reactive resin binder. Examples of the photosensitive resin include a base polymer (a), an ethylenically unsaturated compound (b), and a photopolymerization initiator (c). Examples of the base polymer (a) include an acrylic resin, a polyester resin, and a polyurethane. A system resin or the like is used. Among these, an acrylic copolymer containing (meth) acrylic acid ester as a main component and optionally copolymerizing an ethylenically unsaturated carboxylic acid or another copolymerizable monomer is important. An acetoacetyl group-containing acrylic copolymer can also be used.

As the non-reactive resin, a resin which is easily thermally decomposed by firing is preferable, and examples thereof include ethyl cellulose, methyl cellulose, nitrocellulose, acetyl cellulose, acetyl ethyl cellulose, cellulose propionate, hydroxypropyl cellulose, butyl cellulose, and benzyl cellulose. , A cellulose resin such as nitrocellulose, or methyl methacrylate, ethyl methacrylate, normal butyl methacrylate, isobutyl methacrylate, isopropyl methacrylate,
An acrylic resin composed of a polymer or copolymer such as 2-ethyl methacrylate or 2-hydroxyethyl methacrylate is preferably used. The amounts of these resin binders used are the same as in the case of the photosensitive resin.

The method of incorporating a phosphor, an organic solvent and other optional components into the photosensitive resin or the non-reactive resin is not particularly limited. There is a method of adding a substance and the like, and thoroughly mixing and stirring to uniformly disperse the phosphor. In this case, the content of the phosphor is preferably 1 to 5 parts by weight, more preferably 2 to 5 parts by weight based on 10 parts by weight of the resin binder.
8 parts by weight. When the content of the phosphor exceeds 10 parts by weight, the phosphor layer existing between the ribs after firing is too thick and the discharge space becomes too small. Conversely, when the content is less than 1 part by weight, the phosphor layer is formed. Sometimes, the brightness tends to decrease, which is not preferable.

The positive photosensitive resin composition to which the above-mentioned filler is added may be used, for example, in the form of a paste or in the form of a dry film. When a dry film is used, for example, as shown schematically in FIG. 7, the base film 71 is made of polyethylene terephthalate, polyethylene, polypropylene or the like, and the positive photosensitive resin is placed on the base film. The coating liquid containing the composition can be applied and dried so as to have an appropriate dry thickness and used as the photosensitive resin layer 72. In a preferred embodiment, the base film 71 and the resin layer 7
The release layer 73 is provided between the first and second resin layers 2 to facilitate the peeling of the resin layer 72. Further, an adhesive layer 74 can be provided on the surface of the resin layer 72 in order to facilitate the transfer of the resin layer to the PDP rear substrate. Further, in order to improve the preservability of these dry films, a film similar to the above-mentioned base film can be adhered to the surface of the resin layer 72 or the adhesive layer 74 to form the protective layer 75. In use, the protective layer 75 is peeled off and the resin layer 72 is transferred to the surface of the PDP rear substrate.

In addition to the above-mentioned phosphor composition and phosphor dry film in the present invention, dyes (coloring and coloring), adhesion-imparting agents, antioxidants, thermal polymerization inhibitors, solvents, surface tension modifiers, Additives such as stabilizers, chain transfer agents, defoamers, and flame retardants can be added as appropriate. In particular, by incorporating a silane-based, aluminum-based or titanate-based coupling agent, the adhesion of the phosphor layer finally formed in the cells of the PDP back plate to the cell surface can be improved. Also, these coupling agents are
It may be applied in advance to the cell surface of the back plate of the PDP.

[0026]

Next, the present invention will be described more specifically with reference to examples. Example 1 A substrate having a rib height of 150 μm, a rib width of 50 μm, and a rib pitch of 200 μm was used as a back plate forming substrate.
As a positive photosensitive resin to be filled between the ribs of the substrate, a novolak resin (the following structural formula 1) and naphthoquinonediazide (the following chemical formula 2) / trihydroxybenzophenone, which is a photosensitive agent, have a weight ratio of 8: 2. To 70 parts by weight (solid content) of the composition, 30 parts by weight of a solvent ECA (ethyl cellosolve acetate) was added, and the mixture was stirred at room temperature to dissolve the resin and the photosensitizer in the solvent, followed by filtration to remove insoluble components. A mold photosensitive resin solution was used.

[0027]

This photosensitive resin solution was applied on the substrate surface with a blade coater so as to have a thickness 90 μm thicker than the rib top, and dried at 120 ° C. for 30 minutes in a clean oven. The photosensitive resin film after drying is 10
It was a μm thick film (see FIG. 1A). Next, as shown in FIG. 1B, ultraviolet rays (wavelength 365 n
m) with a light amount of about 500 mJ / cm ² , and then spray-developed at a pressure of 1 kg / cm ² using a 1% by weight aqueous KOH solution to form a blue phosphor layer between ribs as shown in FIG. 1C. Of the photosensitive resin layer 6 was removed.

In this example, a phosphor-containing dry film was used as the phosphor composition. The base polymer of this dry film is methyl methacrylate / n-butyl methacrylate / 2-ethylhexyl acrylate /
Methacrylic acid (copolymerization ratio: 50/10/20 by weight)
/ 20). The blue phosphor to be included in Drift Film is manufactured by Kasei Optonics KX-50
1A (composition: (Ba, Eu) MgAl ₁₀ O ₁₇ )
The green phosphor is also Pl-Gl manufactured by Kasei Optonics.
S (composition: (Zn, Mn) ₂ SiO ₄ , and the red phosphor is also LP-REI (composition: Kasei Optonics)
(Y, Eu) ₂ O ₃ ).

The base polymer, the phosphor and the solvent (3)
-Methoxy-3-methyl-1-butanol) at the following weight ratio to obtain a phosphor dispersion solution. Blue phosphor: base polymer: solvent = 27: 63: 10 Red phosphor: base polymer: solvent = 35: 55: 10 Green phosphor: base polymer: solvent = 35: 55: 10

The above dispersion solution was coated on a polyester film having a thickness of 20 μm using a blade coater and dried in an oven at 90 ° C. for 30 minutes to obtain a coating film having a coating thickness of 160 μm.
A colored dry film was formed. Next, the blue phosphor-containing dry film is placed on a back plate forming substrate preheated to 60 ° C. in an oven on a laminating roll temperature of 100 ° C.
Roll pressure 3kg / cm ² and lamination speed 1.5m
The laminate was press-laminated under the conditions of / min, and as shown in FIG. 1D, the rib space 6 from which the positive resist was removed was filled with the phosphor-containing layer 7 of the dry film to the bottom.

Next, the surface was polished smoothly with a polishing machine as shown in FIG. 2A. Thereafter, in the same manner as above, the red and green dry films were also subjected to the steps of exposure, development, phosphor-containing drum film lamination and polishing, and the red and green phosphor-containing layers were filled between the respective ribs. . After that, the above-mentioned back plate substrate is placed in a firing furnace, heated from room temperature to 550 ° C. in one hour and fired, and the resin component in the phosphor composition is burned off. As shown in FIG. A back plate of the PDP on which the body layer was formed was obtained.

Example 2 In the same positive photosensitive resin solution as in Example 1, glass powder (silicate glass, particle diameter: 3 ± 0.5 μm) was added as an inorganic powder.
m, specific gravity: 6.5) in the following ratio to prepare a photosensitive resin solution in the same manner as in Example 1. Novolak resin: Photosensitizer: Glass powder = 16: 4: 80
(= Solid content) Solid content of resin solution: solvent = 70:30 In the same manner as in Example 1 except that the above photosensitive resin solution was used, phosphor layers of three colors were formed as shown in FIG. 4B. A PDP back plate was obtained.

Example 3 The photosensitive resin solution of Example 2 was applied on a 20 μm-thick polyester film using a blade coater,
Was dried in an oven for 30 minutes to form a coating film having a thickness of 160 μm, thereby obtaining a positive photosensitive resin dry film. Using this dry film, a positive photosensitive resin layer was filled between the ribs under the conditions for laminating the phosphor-containing dry film in Example 1. Thereafter, in the same manner as in Example 1, as shown in FIG. 4B, a back plate of a PDP on which phosphor layers of three colors were formed was obtained.

Example 4 The procedure of Example 1 was repeated, except that the phosphor dry film in Example 1 was replaced with a dispersion solution before preparing the fluorescent dry film, as shown in FIG. 4B. A back plate of the PDP on which the color phosphor layers were formed was obtained.

[0036]

According to the present invention, the PDP back plate which emits pure RGB light without mixing of RGB phosphors and can display a high quality image is wasted on the phosphor. And can be provided economically.

[Brief description of the drawings]

FIG. 1 illustrates a method of the present invention.

FIG. 2 illustrates a method of the present invention.

FIG. 3 illustrates a method of the present invention.

FIG. 4 illustrates a method of the present invention.

FIG. 5 is an explanatory diagram of a configuration of a PDP.

FIG. 6 is a diagram illustrating a conventional method.

FIG. 7 is a diagram illustrating the configuration of a dry film type resin composition of the present invention.

[Explanation of symbols]

 1: Substrate 2: Barrier rib 3: Positive photosensitive composition 4: Photomask 5: Light 6: Exposure area 7: Phosphor composition 8: Area where phosphor layer is to be formed 9: Phosphor composition 10: Area where phosphor layer is to be formed 11: Phosphor composition 51: Front plate 52: Back plate 53: Barrier rib 54: Sustain electrode 55: Bus electrode 56: Dielectric layer 57: Protective layer 58: Address electrode 59: Phosphor Layer 62: Substrate 63: Barrier rib 64: R region 64 ': Residual phosphor 65: G phosphor layer 65': Residual phosphor 71: Base film 72: Photosensitive resin layer 73: Release layer 74: Adhesion Agent layer 75: Protective layer

Claims (8)

[Claims] A step of filling a positive photosensitive resin between a plurality of barrier ribs formed on a substrate; a step of exposing through a photomask having a desired pattern; a step of developing and removing an exposed area; A method for manufacturing a back plate of a plasma display panel, comprising a step of filling a phosphor composition between barrier ribs from which a photosensitive resin has been removed, and a step of firing the filled phosphor composition. 2. The method according to claim 1, wherein the positive photosensitive resin contains a filler that does not impair the photosensitivity of the resin. 3. The phosphor composition is one of three kinds of compositions including phosphors emitting three colors of red, green and blue. Removal of the positive photosensitive resin and filling of the phosphor composition are performed. The method for producing a back plate of a plasma display panel according to claim 1, which is performed on a phosphor composition having the following colors. 4. The method according to claim 1, wherein after filling the phosphor composition, the surface is polished until the top of the barrier rib is reached to smooth the entire surface. 5. The method according to claim 1, wherein the phosphor composition is a photosensitive or non-photosensitive composition. 6. A composition for forming a back plate of a plasma display panel, comprising a positive photosensitive resin and a filler that does not impair the photosensitivity of the resin. 7. The composition for forming a back plate of a plasma display panel according to claim 6, wherein the composition according to claim 6 is a dry film type laminated on a base film. 8. A photosensitive resin composition comprising a positive photosensitive resin and a filler which does not impair the photosensitivity of the resin is used in an amount of 1 to 10 parts by weight,
8. The composition for forming a back plate of a plasma display panel according to claim 6, wherein the composition has a ratio of 90 parts by weight.