KR20030064425A - A phosphor panel and a method of its preparation - Google Patents

Abstract

PURPOSE: A composition for a fluorescent panel having photoluminescent and fluorescent properties as well as high brightness is provided. A method for producing a fluorescent panel composite is also provided. CONSTITUTION: The composition for a fluorescent panel comprises 10 to 90 wt% of a transparent resin and a curing agent, 1.0 to 60 wt% of a photoluminescent phosphor powder and 0.5 to 50 wt% of supplementary additives for reinforcing the physical properties of the panel. The fluorescent panel composite is produced by the process comprising the steps of: (a) mixing a phosphor, supplementary additives and a transparent resin; (b) adding a predetermined amount of a curing agent to the mixture; (c) casting or injecting the mixture in a mould in the form of a plate or the like; (d) settling the mixture to form a luminescent layer(10); (e) forming a reflective layer on the top surface and/or back surface of the luminescent layer(10) to obtain a panel composite; and (f) attaching or embedding a LED or other excitation sources to the back of the panel.

Description

Fluorescent panel composition and method for producing same {A phosphor panel and a method of its preparation}

The present invention relates to a high brightness fluorescent panel composition comprising a phosphorescent phosphor and a fluorescent phosphor, a method for producing the same, and a use thereof, and in particular, a light emitting layer having a predetermined thickness including a phosphor and an auxiliary additive only on the surface of the fluorescent panel. It is possible to reduce phosphors, improve luminance, and control various colors by forming a light emitting device, and in order to overcome sudden drop in luminance over time, which is a disadvantage of phosphors, by embedding or attaching LEDs and other light sources to the back of the fluorescent panel, Since it is possible here, when applied to various advertisement boards, signboards, internal and external equipment, etc., it is related with the high brightness fluorescent panel composition which made it possible to double visibility, and its manufacturing method.

Conventionally, various signboards are widely used for moldings made by cutting PVC sheets manufactured by injection and extrusion methods. However, in order to use them at night, various external light sources for increasing visibility of neon signs or fluorescent lamps are indispensable. Element. However, to date, high brightness phosphor panel compositions containing phosphorescent long afterglow phosphor powders are rarely designed to be used at night, and most of them are thin cardboard such as phosphorescent sheet for printer, luminous tinting film, transfer paper with luminous image, etc. Compositions, such as luminous or photoluminescent artificial stone compositions, artificial molded bodies, internal and external materials, and the like, have been disclosed. However, the composition of the present invention and the high-bright fluorescent panel composition including the phosphorescent phosphors of the present invention are remarkably different in manufacturing methods and uses. .

The above-mentioned various PVC sheets for signboards do not have this problem in the case of securing visibility by using various external light sources such as neon signs or fluorescent lamps at the same time as at present, but for example, when a power failure or the like occurs as a billboard. It is difficult to play a role, and it is pointed out as a problem in terms of economic and facility management, such as excessive power consumption due to the use of various external light sources and regular checks to perform a smooth role of the external light source.

The photoluminescent material is a material that absorbs light such as sunlight or electric light and then emits light in the dark for a long time. Since the photoluminescent material has a property of repeating absorption, emission, absorption, and emission of light several times, recently, It is used not only for functional aspects such as various safety and markers of daily life, but also for various decorations such as accessories and children's toys, etc. It is also formed into a thin sheet and is easily attached to a wall or a glass window. . However, when such a phosphor is formed of a high-luminance fluorescent panel composition having both a photoluminescent property and a fluorescence that can be visually recognized at night, it has not been put to practical use, and in particular, a sudden decrease in luminance over time, which is a disadvantage of the phosphor (generally, In order to overcome the exponential decrease with time), active attempts to maximize the luminous brightness and visibility by immersing or attaching LEDs and other light sources directly to the fluorescent panel, and then using them to excite the phosphors as necessary Not proposed. In addition, in the case of the fluorescent panel, the color may be unique depending on the type of phosphor added to the light emitting layer at night, but in particular, it is impossible to implement various colors using only the commercially available photoluminescent long afterglow phosphor. There is a problem that can drop.

An object of the present invention is to provide a high brightness fluorescent panel composition comprising a phosphorescent and fluorescent phosphor powder capable of solving the above problems.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a casting principle diagram of a doctor blade method for producing a plate-shaped high brightness fluorescent panel composition containing a phosphor powder of the present invention.

2 is a view showing the structure of a fluorescent panel composition A having a light emitting layer 10 containing only a phosphor on the panel surface of the present invention.

FIG. 3 is a view showing the structure of the touch panel composition B in which a light emitting layer 10 of the present invention is mixed / dispersed with an appropriate amount of auxiliary additives such as glass beads, white pigments, fluorescent pigments, dyes, and photochromic dyes together with phosphors.

4 is a fluorescence formed by forming a reflective layer 30 in which an appropriate amount of glass beads are mixed / dispersed in an upper portion (FIG. 4A), a lower portion (FIG. 4B), or an upper / lower portion (FIG. 4C) of the light emitting layer 10 of FIGS. 2 and 3. Figure showing the structure of panel composition C.

FIG. 5 is a cross-sectional view of an integrated fluorescent panel composition fabricated so as to be randomly excited after LEDs are buried in the back of the fluorescent panels of FIGS. 2, 3, and 4 in order to overcome sudden drop in luminance over time, which is a disadvantage of phosphors (FIG. 5A). And a front view (FIG. 5B).

FIG. 6 is a view illustrating a separated fluorescent panel composition manufactured by employing an LED on a PCB substrate to excite at a predetermined distance from the rear side of the fluorescent panel of FIGS. 2, 3, and 4;

7 is an explanatory view showing a separated fluorescent panel composition prepared to excite a fluorescent lamp (FIG. 7A) and a white lamp (FIG. 7B) at a predetermined distance from the rear surface of the fluorescent panel of FIGS. 2, 3, and 4.

8 is a view showing the evaluation of the long afterglow in the dark state of the fluorescent powder composition A of Figure 2 and the phosphor powder used for preparing the fluorescent panel composition of Figure 2;

9 is a view showing the evaluation of long afterglow in the dark state according to the additive material of the light emitting layer in the fluorescent panel composition B of FIG.

10 is a view showing the evaluation of long afterglow characteristics in the dark state according to the position of employing the reflective layer 30 of FIGS. 4A, 4B, and 4C in the fluorescent panel composition C having the mixed / dispersed reflective layer 30 of the glass beads of FIG. 4 formed thereon.

FIG. 11 is a view illustrating evaluation of long afterglow in a dark state according to an excitation time change in the fluorescent panel composition C of FIG. 4.

<Description of the code | symbol about the principal part of drawing>

1: doctor blade 2: mixed slurry 3: warm air

4: carrier tape 5: conveying direction 6: repeller

10 light emitting layer 20 base material 30 reflective layer

40: LED 50: PCB substrate 60: fluorescent lamp

70: white light

D: thickness of fluorescent panel

The present invention is to achieve the above object, a high brightness fluorescent panel composition comprising a phosphorescent and fluorescent phosphor, more specifically, a variety of inorganic phosphorescent phosphors, including oxide-based and sulfide-based light emitting in the visible region The present invention relates to a high brightness fluorescent panel composition having a photoluminescent property and a fluorescent property including a powder, a fluorescent pigment and a dye, and a method and a use thereof.

The preparation of the high brightness fluorescent panel composition of the present invention uses a mixed slurry of 1.0 to 60% by weight of photoluminescent phosphor, 20 to 90% by weight of resin, and 5 to 60% by weight of curing agent based on the weight of the total composition, or Characterized in that the mixed slurry containing the auxiliary additive for increasing the physical properties of the 0.5 to 50% by weight of the fluorescent panel in the mixed slurry containing the phosphorescent phosphor.

At this time, auxiliary additives that can be used include components that are added auxiliary to increase the physical properties of the fluorescent panel, such as glass beads, titanium dioxide (TiO ₂ ) particles, fluorescent pigments, dyes and photochromic pigments (Photorome) In addition, the excitation light source for overcoming a sudden decrease in luminous luminance over time, which is a disadvantage of the phosphor, is characterized in that it comprises an excitation light source that can excite the phosphor in the reflective layer, such as LED, fluorescent, white light emitting white light, etc. .

In addition, the manufacturing method of the high brightness fluorescent panel composition according to the present invention is:

(a) mixing and stirring a phosphor and various auxiliary additives with a transparent resin to disperse the phosphor particles and various auxiliary additives so as to be uniformly mixed;

(b) adding an amount of curing agent to the mixture to control the curing rate,

(c) casting or injecting the mixture into a plate and other shaped mold,

(d) a settling step of inducing the formation of the light emitting layer 10 including phosphor powder and various auxiliary additives having a predetermined thickness only on the surface of the composition of the plate or other shape by the specific gravity difference between the mixtures;

(e) forming a reflective layer 30 having a laminated structure including glass beads, titanium dioxide (TiO ₂ ) particles, and the like on top, bottom, top and bottom of the light emitting layer 10 to manufacture a fluorescent panel composition; and

(f) embedding or attaching LEDs and other excitation light sources that provide light to the back of the fluorescent panel.

The high brightness fluorescent panel composition of the present invention prepared by the above steps is a phosphor powder only on the surface portion of the fluorescent panel in a single step using a mold of Figure 1 or other shape (cross-sectional view of the fluorescent panel composition A of Figure 2) Alternatively, by forming the light emitting layer 10 having a predetermined thickness containing the phosphor powder and various auxiliary additives (cross-sectional view of the fluorescent panel composition B of FIG. 3), phosphor reduction and luminance improvement can be achieved, and the phosphor is rapidly deteriorated over time. In order to overcome the lowering of the luminous intensity, the LED 40 and other light sources are buried or attached to the fluorescent panel as shown in FIGS. 5 and 6, or the excitation light source of the light emitting layer 10 such as the fluorescent lamp 60 or the incandescent lamp 70 as shown in FIG. 7. Excitation of the phosphor is possible by attaching it so as to maximize the visibility at night due to the increase in the luminous intensity. In particular, as shown in FIGS. 5 and 6, the excitation light source of the light emitting layer 10 uses the LED 40. Fluorescent panels composition in applications requiring small products, and in the case of Fig. 7 can be used as applications that require large. In addition, the fluorescent panel composition C of FIG. 4 forms a reflective layer 30 containing glass beads and titanium dioxide particles in the upper or lower portion of the light emitting layer 10 in a multi-step process to increase the light emission intensity. It is not to be limited to various safety and marking tools, but to be widely applied to various road safety facilities related industries such as various billboards, signs, road signs, and road signs.

Hereinafter, each component constituting the high brightness fluorescent panel composition of the present invention will be described in more detail with respect to its function.

A feature of the present invention is to form a light-emitting layer 10 having a predetermined thickness only on the surface of the fluorescent panel by a single process by using the sedimentation phenomenon according to the specific gravity difference between the phosphorescent phosphor as a main component and various auxiliary additives and the transparent resin as a substrate. By embedding or attaching the LED 40 and other light sources to the fluorescent panel, excitation of the phosphor can be performed as necessary, and glass beads and titanium dioxide particles are contained in the upper or lower portion of the light emitting layer 10 in a multi-step process. The light emission intensity is increased by forming the reflective layer 30.

First, the role of the binder in the light emitting layer 10 of the fluorescent panel composition of the present invention and the resin which is the main component constituting the substrate 20, generally, a liquid resin is used by mixing a predetermined amount of a curing agent, the resin and the curing agent The curing speed can be adjusted according to the mixing ratio of the resin, so the surface area of the fluorescent panel is controlled by using the sedimentation phenomenon according to the specific gravity difference between the transparent resin and the phosphor and various auxiliary additives by controlling only the curing rate regardless of the characteristics of the phosphor powder and various auxiliary additives. Only a laminated structure of the light emitting layer 10 / base material 20 as shown in FIG. 3 in which a light emitting layer 10 of a predetermined thickness is formed can be manufactured in a single process.

Specific examples of the resin component can be selected from a wide range of thermosetting, for example, epoxy resin, methacryl resin, phenol resin, melamine resin, acrylic resin, silicone resin, furan resin, urea resin, diallyl phthalate resin, Petroleum resins, fluorocarbon resins, polyurethane resins, polyester resins, and the like, and among them, epoxy resins, methacryl resins, melanin resins and the like are preferable in terms of transparency, hardness, and strength.

The composition ratio of the transparent resin in the fluorescent panel composition of the present invention is used in an amount of 10 to 90% by weight, preferably 30 to 80% by weight, based on the weight of the entire fluorescent panel composition including the phosphor powder and other auxiliary additives.

As a main component constituting the light emitting layer 10 of the fluorescent panel composition of the present invention, when looking at the photoluminescent phosphor powder, after absorbing light such as sunlight or electric light, the light energy absorbed in the dark state is blocked As a substance which reduces light into visible light and continuously emits light while emitting light slowly, examples of the following types of oxide-based phosphors and sulfide-based phosphors are provided.

(1) Oxide-based photoluminescent long afterglow phosphor

M _1-x Al ₂ O _4-X : Eu [M = Ca, Sr, Ba] and M _1-x Al ₂ O _4-x : Eu, Dy [M-Ca, Sr, Ba]

Ca _1-x Ti _1-y Si _y O: Pr _x

(Zn _3-xy M ' _a M _b ) (PO ₄ ) ₂ [M' = Sr, Ca, Ba]

(Ln _1-x Ln ' _x ) ₂ O ₃ [Ln-Y, Gd, Lu, La, Ln' = Eu, Tb, Er, Sm, Dy, Ho, Tm]

(Gd _1-xy M _x Eu _y ) ₂ O ₃ [M = Al, Ga]

Zn ₂ SiO ₄ : Mn and Zn ₂ SiO ₄ : cu

(2) sulfide-based photoluminescent long afterglow phosphors

CaS: Bi

CaSrS: Bi

ZnS: Cu and ZnS: Cu, Cl

ZnCdS: Cu

CaS: Eu, Tm

The phosphorescent phosphor used in the present invention is selected from one of the above-described oxide phosphors and sulfide phosphors in consideration of a desired color, purchase conditions, or the like, or a mixture of two or more thereof is used. Among the phosphors M _1-x Al ₂ O _4-x : Eu [M = Ca, Sr, Ba] and M _1-x Al ₂ O _4-x : Eu, Dy [M = Ca, Sr, Ba] -based, in particular Among the SrAl ₂ O ₄ : Eu, Dy phosphors and sulfide-based phosphors, CaS: Eu, Tm and ZnS: Cu are preferably used.

The composition ratio of the phosphor powder in the fluorescent panel composition of the present invention is 1.0 to 60% by weight, preferably 3.0 to 50% by weight, based on the weight of the entire fluorescent panel composition including the transparent resin, the curing agent, the glass beads, and other auxiliary additives. Used as

The particle size of the oxide- and sulfide-based photoluminescent phosphor powders used in the present invention has a great influence on the optical properties, so particle selection is important. In the present invention, those having a size of 50 to 400 mesh can be used, and powders of 100 mesh or less can be used. Preference is given to using.

In addition, glass beads, titanium dioxide (TiO ₂ ), zinc oxide (ZnO), and alumina are used to improve physical properties of the fluorescent panel, for example, to solve problems such as maximization of emission luminance and various color problems. White pigments such as (Al ₂ O ₃ ), silicate (SiO ₂ ), zirconia (ZrO ₂ ), and auxiliary additives such as fluorescent pigments, dyes and photochromic dyes (Photorome) are added. The composition ratio of these auxiliary additives is used in an amount of 0.5 to 50% by weight, preferably 1.0 to 40% by weight based on the weight of the entire fluorescent panel composition.

Since the glass beads of the auxiliary addition constitute the light emitting layer 10 and the reflective layer 30 of the fluorescent panel composition, they are chemically stable and have excellent water resistance, alkali resistance, acid resistance, chemical resistance, and heat resistance, and have a round shape of beads. It can improve the fluidity and dispersibility in the resin, stabilize the composition and increase the strength and durability of the surface of the fluorescent panel due to high filling. Especially, it is applied to the fluorescent panel as in the road marking paint due to the retroreflective property. Even in this case, the excitation intensity can be increased as well as the luminous efficiency and the emission intensity. Glass bead particle size of the present invention can be used in the 50 to 400 mesh size, it is preferable to use spherical particles of 100 mesh or less.

Among the auxiliary additives, white pigments such as titanium dioxide (TiO ₂ ), zinc oxide (ZnO), alumina (Al ₂ O ₃ ), silicate (SiO ₂ ), zirconia (ZrO ₂ ), and the light emitting layer 10 of the fluorescent panel composition and As a component constituting the reflective layer 30, the white pigment can increase the reflectance, and the whiteness of the fluorescent panel can be increased to white, and in particular, titanium dioxide (TiO ₂ ) is formed on the surface of the fluorescent panel due to the characteristics of the photocatalyst. The self-cleaning effect can not only prevent the lowering of the luminous luminance due to contamination during use, but also increase the reflectance and the whiteness. In the present invention, only one type of white pigment is used or a mixture of two or more types is used. Powder particle size can be used 50-400 mesh size, it is preferable to use powder particles of 200 mesh or less.

In addition, fluorescent pigments, dyes and photochromic pigments (Photorome), etc. are added to the purpose of solving the problems that can reduce the design, since it is impossible to implement a variety of colors during the day and night using only the currently developed photoluminescent phosphors As a component, organic and inorganic fluorescent pigments can be used in a wide range of colors because of their vivid hue, excellent coloring power, and various colors.For example, chromium yellow (yellow), cadmium yellow (yellow) and iron oxide ( Red), cobalt blue (blue) and the like, and yellow-red azo pigments, blue-green phthalocyanine-based pigments, and the like. Photochromic pigments are colorless in a dark place and are purple and blue when subjected to ultraviolet rays. , As a special organic pigment that repeats the discoloration process is changed to yellow, the particle size of the present invention 100 ~ 400 mesh size It is available, and it is preferable to use a powder of 200 mesh or less.

In addition to the compounds exemplified above, any auxiliary material capable of improving the physical properties of the fluorescent panel according to the present invention may be used.

After adding the above components in a certain composition ratio, the mixture for preparing the fluorescent panel composition of the present invention needs to be obtained in the form of a slurry in which each component is uniformly dispersed. For this purpose, the phosphor powder particles and various additive components are uniformly obtained. Mixing process should be carried out.

The mixing process may be performed by mixing with a general stirrer which is stirred for 1 to 60 minutes using a magnetic bar rotating at a rotational speed of 100 to 2,000 rpm.

However, in the case of FIG. 1 of the doctor blade method, in order to prevent sedimentation of the phosphor and the auxiliary additives in the slurry, the plate-shaped fluorescence is carried out by stirring using a high-speed rotating Pella 6 at a rotational speed of 1,000 to 35,000 rpm. It is preferable to prepare the panel composition.

Injecting the slurry mixed by the above process into a mold having a plate shape and other shapes, a settling step according to the specific gravity difference between the mixtures so as to form a light emitting layer 10 containing phosphor powder only on the surface of the fluorescent panel; Fluorescent panels are manufactured by embedding or attaching LEDs and other light sources to the rear of the fluorescent panels.

Hereinafter, the present invention will be described in more detail as an embodiment focusing on the manufacturing process and physical properties thereof for the fluorescent panel composition according to the present invention.

The following examples are provided to illustrate and explain the present invention in more detail, and the scope of the present invention should not be understood as being limited only to the following examples.

< Example 1 >

In the present embodiment, as the phosphor, SrAl ₂ O ₄ : Eu, Dy phosphor powder, which is an oxide of -200 mesh, is used in an amount of 10% by weight based on the weight of the entire fluorescent panel composition, and the epoxy resin is contained in the compounding ratio shown in Table 1 below. The slurry was prepared by stirring and dispersing the resin and the curing agent at a speed of 300 rpm with a general stirrer using a magnetic bar for 5 minutes, injecting it into a plate-shaped mold and curing at room temperature for 60 minutes, and then demolding the thickness D 5mm. The fluorescent panel composition A of FIG. 2 having a thickness of 1 mm of the light emitting layer 10 was prepared. In order to measure the emission color and the emission intensity of the fluorescent panel composition A prepared as described above, the light was blocked for 30 hours or more, and then the light was projected for 20 minutes with a fluorescent lamp of 25 W at a distance of 5 cm behind the fluorescent panel as shown in FIG. After the excitation), the light emission intensity was measured over time in the light-blocked state (dark state).

8 is a dark state of the phosphor powder used in the present invention under the same measurement conditions for the change in luminescence intensity over time of the fluorescent panel composition A prepared in the composition shown in Table 1, and also for mutual comparison with the fluorescent panel composition A As a diagram showing the change in the luminous intensity at, the initial emission intensity of only the fluorescent panel composition A and the phosphor powder prepared through the present invention and the attenuation rate of the emission intensity with time did not show much difference. However, considering that the amount of the phosphor contained in the fluorescent panel composition A is 10% by weight relative to the weight of the entire fluorescent panel composition but the powder sample is 100% phosphor, this means that the emission intensity is improved. It was confirmed that the brightness can be improved. In addition, the emission color of the fluorescent panel composition A showed 520 nm of yellow green, which is an intrinsic emission wavelength of the SrAl ₂ O ₄ : Eu, Dy phosphor powder.

TABLE 1

< Example 2 >

In the present embodiment, the slurry of SrAl ₂ O ₄ : Eu, Dy phosphor powder, epoxy resin and curing agent and other auxiliary additives were prepared in the same process as in Example 1, and the plate-shaped mold was used in the mixing ratio shown in Table 2 below. (Mould) and then cured at room temperature for 60 minutes, demolded to prepare a fluorescent panel composition B of Figure 3 having a thickness D 5mm, the light emitting layer 10 1.7mm, and fluorescence under the same measurement conditions as in Example 1 The emission color and the emission intensity of the panel composition B were measured.

9 is a view showing a change in the emission intensity of the fluorescent panel composition A prepared over the composition shown in Table 2 over time, and also the emission intensity of the fluorescent panel composition A for mutual comparison with the fluorescent panel composition B, this embodiment The fluorescent panel composition B prepared through the present invention showed that the initial luminescence intensity measured in the dark state was improved by 3.5% immediately after projecting light for 20 minutes with a fluorescent lamp of 25 W compared to the fluorescent panel composition A, and the emission decay rate was also reduced. This is because the glass beads and titanium dioxide particles added as auxiliary additives contributed to the increase in luminous efficiency and luminous intensity. It was also confirmed that the emission color of the fluorescent panel composition B was also 520 nm yellow green, which is an intrinsic emission wavelength of the SrAl ₂ O ₄ : Eu, Dy phosphor powder.

TABLE 2

< Example 3 >

In the present embodiment, after manufacturing the fluorescent panel composition B of Figure 3 in Example 2, by adjusting the manufacturing conditions so that the thickness of the reflective layer 30 is 1mm at the compounding ratio shown in Table 3 below, Figure 4a, 4b, The fluorescent panel composition C of FIG. 4 was prepared by varying the positions where the reflective layer 30 was employed as shown in FIG. 4C, and then the time of the fluorescent panel composition C according to the position where the reflective layer 30 was employed under the same measurement conditions as in Example 1 above. The emission intensity was measured. In particular, in Examples 1 and 2, the relative blending ratio of the curing agent to the epoxy resin was reduced in order to form the light emitting layer 10 only on the surface of the fluorescent panel due to the difference in specific gravity of each composition. The compounding ratio was increased to increase the curing rate, which is to enhance the dispersibility of the glass beads in the reflective layer by promoting the curing rate.

TABLE 3

FIG. 10 is a luminescence intensity change in the dark state according to the position of the reflection layer 30 in the fluorescent panel composition C in which the positions of the reflection layer 30 are changed as shown in FIGS. 4A, 4B, and 4C, respectively; In addition, as a diagram showing the change in the emission intensity of the fluorescent panel composition B for mutual comparison with the fluorescent panel composition C of the present embodiment, all of the fluorescent panel composition C employing the reflective layer 30 of the present embodiment compared to the fluorescent panel composition B Was improved. In particular, in the present embodiment, the fluorescent panel composition C of FIG. 4A improved 1.5% of the initial emission intensity measured immediately after 20 minutes of light irradiation with a 25W fluorescent lamp compared to composition B, but the fluorescent panel composition C of FIG. 4B was 5.3%. The improvement of the initial emission intensity of, and the fluorescent panel composition C of Figure 4c was confirmed that the initial emission intensity of 8.2%, respectively. This is because the retroreflective properties of the glass beads added to the reflective layer contributed to the increase in luminous efficiency and luminous intensity with the same effect as in the road marking paint. In addition, it was confirmed that the emission color of the fluorescent panel composition C was also 520 nm yellow green, which is an intrinsic emission wavelength of the SrAl ₂ O ₄ : Eu, Dy phosphor powder.

FIG. 11 is a view showing a change in luminous intensity according to projection (excitation) time of light by a fluorescent lamp of 25 W in the fluorescent panel composition C having different positions of employing the reflective layer 30 as shown in FIGS. 4A, 4B, and 4C of the present embodiment. In this case, the luminous intensity is a result measured in a dark state 10 minutes after the projection of light for a predetermined time. As shown in FIG. 11, as the excitation time of the light became longer, the luminous intensity rapidly increased in all the compositions employing the reflecting plate and did not increase much over 30 minutes. However, the light emission intensity was different depending on the position of the reflective layer 30. In particular, the composition of FIG. 4C employing the reflective layer 30 above and below the light emitting layer 10 showed the maximum light emission intensity.

< Example 4 >

In the present embodiment, 5 wt% of red, blue, yellow, and green fluorescent pigments are added to SrAl ₂ O ₄ : Eu, Dy phosphor powder, epoxy resin, curing agent, and glass beads in the mixing ratios shown in Table 4, respectively. Four kinds of slurry (S4-1 to S4-4) were prepared by the same process as in Example 1, and then injected into a plate-shaped mold and cured at room temperature for 60 minutes, followed by demolding to a thickness D of 5 mm and a light emitting layer. (10) The fluorescent panel composition B of FIG. 3 having a thickness of 1.6 mm was prepared, and the emission color change of the fluorescent panel composition B was measured. As shown in Table 4, the light emitting color of the fluorescent panel composition B was slightly softened as compared with the original color of the fluorescent pigment, but it was confirmed that unique color control was possible according to the color of the fluorescent pigment applied.

TABLE 4

Therefore, the fluorescent panel composition of the present invention not only does not change the emission color of the phosphor powder itself but also increases the emission intensity, and also by embedding or attaching a light source capable of arbitrarily exciting the light emitting layer 10, the phosphor according to need. Excitation of the light can be maximized at night visibility according to the increase in the intensity, and by using a variety of fluorescent pigments and dyes can be controlled in a variety of colors, the high brightness fluorescent panel composition combines the luminescence and fluorescence of the present invention As well as various billboards and signs, interior and exterior equipment materials that tend to emphasize color and design in use, and more specifically, interior and exterior materials such as houses, buildings, and public facilities, and houses such as kitchens, bathrooms, and furniture. It can be widely applied as a facility member.

The high-luminance fluorescent panel composition having the photoluminescent property and the fluorescent property of the present invention may be a phosphor powder (a cross-sectional view of the fluorescent panel composition A of FIG. 2) only on the surface portion of the fluorescent panel in a single process using a mold of FIG. By forming a light emitting layer 10 having a predetermined thickness containing the phosphor powder and various auxiliary additives (cross-sectional view of the fluorescent panel composition B of FIG. 3), it is possible to reduce phosphors and improve luminance, and also to rapidly emit light over time, which is a disadvantage of phosphors. In order to overcome the decrease in intensity, it is necessary by embedding or attaching an LED and other light sources to the fluorescent panel as shown in FIGS. 5 and 6, or by mounting excitation light sources of the light emitting layer 10 such as the fluorescent lamp 60 or the incandescent lamp 70 as shown in FIG. Excitation of the phosphor is possible, thereby maximizing the visibility at night due to the increase in the luminous intensity. In particular, as shown in FIGS. Water can be used for applications requiring a small product and in the case of FIG. 7. The fluorescent panel composition C of FIG. 4 is a multi-step process. It is possible to increase the luminous intensity by forming the reflective layer 30 in the lower portion, it is characterized in that it is possible to control a variety of colors by using a variety of fluorescent pigments and dyes. Therefore, the high-luminance fluorescent panel composition having the luminescence property and the fluorescence property of the present invention is not only various advertisement boards and signs, but also internal and external equipment materials that tend to emphasize color and design on use, and more specifically, houses, buildings, public It can be widely used as interior / exterior materials of facilities and housing facilities such as kitchens, baths and furniture.

Claims (14)

In the plate and various forms of panel composition, At least a portion of the panel composition is a fluorescent panel composition, characterized in that for forming an excitation light source for providing light to the light emitting layer (10) and the base layer (20) containing a phosphor, and the back of the base layer (20). The method of claim 1, Fluorescent panel composition, characterized in that for forming the upper and lower, upper and lower surfaces of the light emitting layer (10). The method of claim 1, Fluorescent panel composition, characterized in that the excitation light source is employed as an integral or separate form. The method of claim 1, The light emitting layer 10 and the base layer 20 are prepared from a mixed slurry of 1.0 to 60% by weight of phosphor, 20 to 90% by weight of resin, and 5 to 60% by weight of curing agent based on the weight of the total composition. Fluorescent panel composition characterized in. The method of claim 4, wherein Fluorescent panel composition, characterized in that prepared in the mixed slurry containing 0.5 to 50% by weight of the coadditives based on the weight of the total composition. The method of claim 4, wherein Fluorescent panel composition, characterized in that the phosphor is one or a mixture of two or more selected from an oxide phosphor and a sulfide phosphor. The method of claim 4, wherein The resin is selected from epoxy resin, methacryl resin, phenol resin, melamine resin, acrylic resin, silicone resin, furan resin, urea resin, diallyl phthalate resin, petroleum resin, fluorocarbon resin, polyurethane resin and polyester resin Fluorescent panel composition characterized in that. The method of claim 5, The auxiliary additive is one or a mixture of two or more selected from glass beads, white pigments, fluorescent pigments, dyes and photochromic pigments. The method of claim 8, Fluorescent panel composition, characterized in that the glass beads are spherical particles. The method of claim 8, The white pigment is one or a mixture of two or more selected from titanium dioxide (TiO ₂ ), zinc oxide (ZnO), alumina (Al ₂ O ₃ ), silicate (SiO ₂ ), zirconia (ZrO ₂ ). Fluorescent panel composition. The method of claim 1, Fluorescent panel composition, characterized in that the excitation light source is selected from LED, fluorescent, white light. The method of claim 2, The reflective layer 30 is prepared from a mixed slurry of 20 to 90% by weight of resin, 5 to 60% by weight of curing agent, and 0.5 to 50% by weight of an auxiliary additive based on the weight of the total composition. Composition. The method of claim 12, Fluorescent panel composition, characterized in that the additive is one or a mixture of two or more selected from glass beads, white pigments, fluorescent pigments, dyes and photochromic pigments. (a) mixing and stirring a phosphor and various auxiliary additives with a transparent resin to disperse the phosphor particles and various auxiliary additives so as to be uniformly mixed; (b) adding an amount of curing agent to the mixture to control the curing rate, (c) casting or injecting the mixture into a plate and other shaped mold, (d) a settling step of inducing the formation of the light emitting layer 10 including phosphor powder and various auxiliary additives having a predetermined thickness only on the surface of the composition of the plate or other shape by the specific gravity difference between the mixtures; (e) forming a reflective layer 30 having a laminated structure including glass beads, titanium dioxide (TiO ₂ ) particles, and the like on top, bottom, top and bottom of the light emitting layer 10 to manufacture a fluorescent panel composition; and (f) A method of manufacturing the high brightness fluorescent panel composition according to claim 1 and 2, comprising the step of embedding or attaching an LED and other excitation light sources that provide light to the rear surface of the fluorescent panel.