JP2003109769A - Nightglow electron stimulated light emitting component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nightglow electron stimulated light emitting component having energy-saving effect which can be used as nightglow backlight in various different colors. SOLUTION: Light emitting layers 20 composed of a number of light emitting particles 21 are piled on a front electrode layer 20, on which, dielectric layers 30 are piled, on top of which are piled rear electrode layers 40 driven by the front electrodes and alternate-current voltage to stimulate the number of light emitting particles 21 in the light emitting layers 20 and vibrating and making the light emitting layers 20 emit light. The outer periphery of the rear electrode layers 40 are tightly sealed with insulating tight-sealing layers 50, one layer of which is either mixed with or bonded to nightglow layers 60, composed of a number of nightglow fine particles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminescent type electronically excited light emitting device, and in particular, by combining a manufacturing technique of a kind of luminescent powder and an EL device, the manufactured EL device can absorb an external light source. And a luminescent electroluminescent component that can provide a visible light at night or in the dark.

[0002]

2. Description of the Related Art Conventional inorganic electronically excited light emitting components (El
ectro Luminescent (hereinafter abbreviated as EL) itself has a sheet shape, and is mainly applied to backlight components on the market, and is generally used in the backlight field of PDAs, mobile phones and the like. FIG. 9 shows a structural layer of a conventional EL component, which is a transparent base material layer 71, a front electrode layer 72, a light emitting layer 73, a dielectric layer 74, and a back electrode layer 75 in this order.
And an insulating sealing layer 76 are attached to form a sheet shape, and an AC voltage is applied to the front electrode layer 72 and the back electrode layer 75 to cause the light emitting layer 73 of the EL component to emit light.

The EL parts are mainly applied and used as backlight parts in the market, but when used as backlight parts for PDAs, mobile phones, etc., the face color that emits light is generally green due to the limitation of raw materials. , Turquoise, dark blue,
There are only orange and white, and orange and white are rare and have a short life. Since the light emitting complexion lacks the three primary colors red, when a different color is required on the market, a light-exciting fluorescent pigment or dye is mixed to obtain a different color. For example,
White EL parts are made by mixing pink pigments or dyes with blue-green luminescent powder, and yellow-green EL parts are made by mixing yellow pigments or dyes with green luminescent powder. Is. However, these general mixed fluorescent pigments or dyes also stop emitting light when the light goes out and cannot continue to emit light, so they are not practical and need to be improved.

[0004]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a night-light type electronically excited light emitting device which has an energy saving effect and can be used as a night light backlight of various different colors.

[0005]

In order to achieve the above-mentioned object, a luminescent type electronically excited light-emitting device of the present invention has a front electrode layer on which a light-emitting layer composed of a large number of light-emitting particles is stacked, and the above-mentioned light emission A dielectric layer is stacked on the layer, and the front electrode and the AC voltage are driven on the dielectric layer to excite and vibrate the majority luminescent particles in the luminescent layer and cause the luminescent layer to emit light. A back electrode layer is stacked, the outer periphery of the back electrode layer is sealed with an insulating sealing layer, and one of the parts is mixed or combined with a luminescent layer that absorbs and stores light source energy, The gist is that the layer is a luminescent type electronically excited light-emitting device characterized in that it is composed of a large number of luminescent powders.

[0006]

DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. According to the first embodiment of the present invention, a luminescent type electronically excited light emitting device has a front electrode layer 10.
The light emitting layer 20 having a large number of light emitting particles 21 is stacked on the dielectric layer 30, the dielectric layer 30 is stacked on the light emitting layer 20, and the back electrode layer 40 is stacked on the dielectric layer 30. The outer periphery of 40 is separately sealed by an insulating sealing layer 50, and one of the parts is mixed or combined with a luminescent layer 60 composed of a number of luminescent powders 61.

In this specific example, the front electrode layer 10 is composed of a transparent base material layer 11 and a conductive layer 12, and the insulating sealing layer 50 is, in this specific example, an insulating layer and an ACP layer. (Not shown).

The luminescent type electronically excited light-emitting component of the present invention can be incorporated in products such as a liquid crystal display screen A, a mobile phone display screen and a PDA display screen. FIG. 2 and FIG. 3 are diagrams showing the operation of the night-light powder in the night-light layer 60 absorbing and releasing the light source, and the light-emitting layer 20 is driven by the alternating voltage driving of the front electrode layer 10 and the back electrode layer 40. FIG. 6 is a diagram showing that the luminescent particles 31 are excited and vibrate while emitting light to cause the luminescent layer 20 to emit light.

Since the main body of light has a transmissive ability, a large number of phosphor powders 61 in the phosphor layer 60 of the EL component, which is illuminated by the sun or a lamp, continuously absorbs the light source and stores the energy. A large number of luminescent powders 6 stored in the field of the luminescent layer 60 when stored in the luminescent layer 60 and at night or in a dark place.
No. 1 can release energy continuously and provide visible light, and energy saving effect can be obtained.

In this method, mainly during the manufacturing process of an EL component, a special luminescent material is used to mix or combine the luminescent layers 60 in different structural layers, and the luminescent layer 60 absorbs light energy. And the energy saving effect can be surely achieved by using the principle of release.

The present invention is mainly a component formed by combining the technology for manufacturing a phosphor powder and an EL component, which can emit light under a driving condition, and even if the driving condition disappears, the phosphor powder is in its primary color. It emits light, and the luminescent powder also absorbs an external light source, so that the luminescent state can be continued. Moreover, the present invention can provide visible light at night or in a dark place, and it is also possible to mix another fluorescent pigment to mix the complexion, for example,
The white EL parts are made by mixing blue-green luminescent powder with a red pigment, and the yellow-green EL parts are made by mixing green luminescent powder with a yellow pigment. See Table 1 below. Can be done.

[0012]

[Table 1]

Of course, although the present invention has many structural changes capable of achieving the above-mentioned luminescent effect, FIG. 4 shows a second preferred embodiment of the present invention, in which the luminescent layer 60 is directly connected to the transparent substrate. A number of luminescent powders 61 in the luminescent layer 60 provided in the layer 11 continue to absorb the light source of the sun or lamp to store energy in the luminescent layer 60 for night time or In the dark place, a large number of luminous powders 6 in the luminous layer 60.
1 continues to release energy and provide visible light,
Energy saving effect can be achieved.

FIG. 5 shows a third preferred embodiment of the present invention, in which the luminescent layer 60 is located between the front electrode layer 10 and the luminescent layer 20, and the luminescent layer 60 is included in the luminescent layer 60. Many luminescent powders 61 continuously absorb the light source of the sun or lamp,
Energy is stored in the luminescent layer 60, and at night or in a dark place, a large number of luminescent powders 61 in the luminescent layer 60 continuously release energy to provide visible light, thus achieving an energy saving effect. can do.

FIG. 6 shows a fourth preferred embodiment of the present invention, in which the luminous layer 60 comprises the light emitting layer 20 and the dielectric layer 30.
And a plurality of luminescent powders 61 in the luminescent layer 60 continuously absorb the light source of the sun or a lamp to store energy in the luminescent layer 60, and at night or in a dark place. In addition, the multiple luminescent powder 61 in the luminescent layer 60 continuously releases energy to provide visible light, thus achieving an energy saving effect.

FIG. 7 shows a fifth preferred embodiment of the present invention, in which the luminescent layer 60 is provided directly in the dielectric layer 30 and the multi-luminescent powder 61 in the luminescent layer 60. Continuously absorbs the light source of the sun or lamp to store energy in the luminescent layer 60, and at night or in a dark place, the multiple luminescent powders 61 in the luminescent layer 60 continuously provide energy. It can be released and provide visible light to achieve energy saving effect.

FIG. 8 shows a sixth preferred embodiment of the present invention, in which the luminescent layer 60 is provided directly in front of the transparent base material layer 11 and the multi-luminescent powder in the luminescent layer 60 is provided. Body 61
Continuously absorbs the light source of the sun or lamp to store energy in the luminescent layer 60, and at night or in a dark place, a large number of luminescent powders 61 in the luminescent layer 60 continue to generate energy. Can be released to provide visible light and achieve energy saving effect.

[0018]

The present invention has the following effects. In addition, the EL component of the present invention may be separately coated with a luminous layer or may be combined with any one of the layers, and the luminous layer has a function of absorbing a light source and storing and releasing energy. Has energy saving effect. Further, since it can be mixed with another fluorescent pigment to form another color, it is possible to obtain a luminescent backlight of various different colors. By mixing different luminous powders into the EL component, a light mixing effect is obtained in which the EL component has a different color.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a luminescent type electronically excited light emitting device according to a first embodiment of the present invention.

FIG. 2 is a conceptual diagram showing an operation in which a luminescent powder of a luminescent layer of a luminescent type electronically excited light emitting device according to a first embodiment of the present invention absorbs a light source.

FIG. 3 is a conceptual diagram showing the operation of releasing the light source by the luminescent powder in the luminescent layer of the electroluminescent device of electroluminescent type according to the first embodiment of the present invention.

FIG. 4 is a sectional view showing a luminescent type electronically excited light emitting device according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a luminescent type electronically excited light emitting device according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a luminescent type electronically excited light emitting device according to a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a luminescent type electronically excited light emitting device according to a fifth embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a luminescent electronically excited light emitting device according to a sixth embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a conventional electronically excited light emitting component.

[Explanation of symbols]

10 Front electrode layer 11 Transparent base material layer 12 Conductive electrode layer 20 light emitting layer 21 Luminescent particles 30 dielectric layer 40 Back electrode layer 50 Insulation sealing layer 60 luminous layer 61 Luminescent powder

Claims (5)

[Claims] 1. A front electrode layer, a light emitting layer, a dielectric layer, a back electrode layer, and a luminescent layer, wherein the light emitting layer composed of a large number of light emitting particles is stacked on the front electrode layer. And stacking the dielectric layer on the light emitting layer, driving the front electrode layer and an alternating voltage on the dielectric layer to excite and vibrate the multiple light emitting particles in the light emitting layer, and The back electrode layer that causes the light emitting layer to emit light is stacked, and the outer periphery of the back electrode layer is sealed with an insulating sealing layer, and any one layer of the components is mixed with the night light layer that absorbs and stores light source energy. An electroluminescent component of electroluminescent type as a luminescent type, characterized in that the luminescent layer is composed of a large number of luminescent powders. 2. The electroluminescent component according to claim 1, wherein the luminescent layer is bonded to the luminescent layer and its periphery. 3. The luminescent electron according to claim 1, wherein the front electrode layer is composed of a transparent base material layer and a conductive layer, and the luminescent layer is bonded to the transparent base material layer. Excitation light emitting component. 4. The electroluminescent device of electroluminescent type according to claim 1, wherein the luminous layer is provided between the luminous layer and each of the other layers. 5. The electroluminescent device according to claim 1, wherein the phosphor layer is directly provided in the dielectric layer.