JP2004227873A - Display component using el and display device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display component using EL and a display device using the same, content of which a user can freely make or change. <P>SOLUTION: In the display component using EL with a transparent electrode layer 2, a luminous body layer 3, a dielectric layer 4, and a back electrode layer 5 formed between an insulating substrate 1 and an insulating sheet 6, the back electrode layer 5 is formed in a matrix as a plurality of electrode parts 5a zoned in a square shape or a circular shape in a plane, and a part of each electrode part 5a is made exposed by a hole 6a formed in the insulating sheet 6. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display component using electroluminescence (hereinafter, referred to as EL) and a display device using the same.
[0002]
[Prior art]
A display device using a conventional EL generally has a configuration as shown in FIG. 6, and the configuration will be described with reference to FIG. 6A is a plan view, and FIG. 6B is a sectional view taken along the line VI-VI of FIG.
As shown in FIG. 6, a display device 20 using EL includes a transparent insulating sheet 21, a transparent electrode layer 22 formed on the back surface of the insulating sheet 21, and a light emitting element (EL) formed on the transparent electrode layer 22. It comprises a layer 23, a dielectric layer 24, a back electrode layer 25, and an insulating layer 26 sequentially formed on the light emitting layer 23. The transparent electrode layer 22 is formed of a light-transmitting conductive layer (hereinafter, referred to as ITO) mainly containing indium oxide (indium tin oxide).
[0003]
In addition, for example, when the letter “A” is displayed as shown in FIG. 6A, the plane shape of the back electrode layer 25 is formed into an “A” shape, and the space between the transparent electrode layer 22 and the back electrode layer 25 is formed. The light emitted to the transparent insulating sheet 21 side is led out by applying an AC voltage or a DC pulse voltage.
When the letter "A" is displayed as shown in FIG. 6, in addition to forming the back electrode layer 25 in the "A" shape, the transparent electrode layer 22, the light emitting (EL) layer 23, and the dielectric layer 24 are formed. May also be formed in the “A” shape.
[0004]
[Problems to be solved by the invention]
By the way, in the display device using the conventional EL, characters, patterns, and the like are determined, and the planar shape of the back electrode layer 25 or the planar shape of the light-emitting (EL) layer 23 and the dielectric layer 24 is determined based on the characters and patterns. Is determined, and the display device is manufactured.
In other words, there is a technical problem that characters, patterns, and the like determined in advance by the maker can be displayed, and the user cannot freely create or change the characters, patterns, and the like.
[0005]
The present invention has been made in order to solve the above technical problem, and provides a display component using an EL and a display device using the EL, in which a user can freely produce or change display contents. The purpose is to:
[0006]
[Means for Solving the Problems]
A display component using the EL according to the present invention made in order to solve the technical problem, a transparent electrode layer, a light emitting layer, a dielectric layer, between an insulating substrate and an insulating sheet. In a display component using EL in which a back electrode layer and a back electrode layer are formed, the back electrode layer is formed in a matrix shape as a plurality of electrode portions having a planar shape partitioned into a rectangular shape or a circular shape, In each electrode part, a part thereof is exposed by a hole formed in the insulating sheet.
In this way, the back electrode layer is formed in a matrix shape as electrode portions having a planar shape partitioned into a rectangular shape or a circular shape, and a part of each electrode portion is exposed from a hole formed in the insulating sheet. are doing. Therefore, by electrically connecting these exposed electrode portions, a predetermined portion of the light emitting layer can emit light, and desired characters and pictures can be displayed.
[0007]
Further, a display component using an EL according to the present invention made to solve the technical problem includes a transparent electrode layer, a luminescent layer, and a dielectric between an insulating substrate and an insulating sheet. In a display component using an EL in which a layer and a back electrode layer are formed, a plurality of light emitting sections having a planar shape partitioned into a rectangular shape or a circular shape are provided on the transparent electrode layer. The back electrode layer is formed in a matrix shape, and the back surface electrode layer is formed at each position corresponding to the light emitting unit as a plurality of electrode units each having a planar shape partitioned into a rectangular shape or a circular shape. A part thereof is exposed by holes formed in the insulating sheet.
As described above, the back electrode layer is formed in a matrix shape as an electrode portion having a planar shape partitioned into a rectangular shape or a circular shape, and a part of each electrode portion is exposed from a hole formed in the insulating sheet. In addition, the luminous body layers are formed in a matrix shape as luminous portions each having a square planar shape.
Therefore, by electrically connecting these exposed electrode portions, desired characters and pictures can be displayed.
[0008]
Further, a display device can be formed by electrically connecting the electrode portions exposed from the holes formed in the insulating sheet with a conductive member. Specifically, the conductive member is desirably a conductive tape or conductive ink.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view showing a manufacturing process of a display component using the EL according to the present invention, and FIG. 2 is a view showing a completed state of the display component using the EL.
In FIG. 1, reference numeral 1 denotes a transparent insulating substrate, and a transparent electrode layer 2 is formed on the entire upper surface of the insulating substrate 1. The transparent electrode layer 2 is formed of a light-transmitting conductive layer (hereinafter, referred to as ITO) containing indium oxide (indium tin oxide) as a main component, and is formed by a method similar to a conventional method.
[0010]
Further, the material of the insulating substrate 1 may be any insulating substrate having a light transmitting property, and for example, glass, polyamide resin, polycarbonate resin, or the like can be used. Further, the insulating substrate 1 is not limited to a rigid one, and may be a flexible insulating sheet such as polyester or polyethylene terephthalate.
[0011]
On this transparent electrode layer 2, a light emitting (EL) layer 3 is formed. The luminous body (EL) layer 3 is formed by printing, and a large number of luminous parts 3a are formed in a matrix shape (m in the horizontal direction and n in the vertical direction in a lattice shape). Have been. Note that, in this embodiment, the case where the planar shape of the light emitting portion 3a is a square shape is shown, but the light emitting portion 3a may be a rectangular shape or a circular shape.
The luminous body (EL) layer 3 is widely known, and is formed, for example, by dispersing ZnS: Cu-based phosphor powder in an organic binder and printing it to a thickness of about 50 to 100 μm. Is done. The light emitting portion 3a is formed in a square shape having a side of about 2 mm to 10 mm in consideration of printing accuracy, though the finer the light emitting portion 3a is, the clearer characters and pictures can be displayed.
[0012]
Then, a dielectric layer 4 and a back electrode layer 5 are sequentially formed on the light emitting layer 3. Known materials can be used for the dielectric layer 4. For example, the dielectric layer 4 is formed by printing a lead titanate-based, lead niobate-based, or barium titanate-based material.
Similar to the light-emitting section 3a, the back electrode layer 5 has a matrix in which a large number of electrode sections 5a are sectioned in a matrix shape (m in the horizontal direction and n in the vertical direction). ). Note that, in this embodiment, the case where the planar shape of the electrode portion 5a is a square shape has been described, but it may be a rectangular shape or a circular shape.
[0013]
The electrode section 5a is formed at a position corresponding to the light emitting section 3a. The lowermost electrode section 5a of the electrode section 5a is connected to a power supply line 5b having one end connected to the terminal section 5c.
The back electrode layer 5 (electrode portion 5a) can be formed of a known material such as aluminum, platinum, silver, molybdenum, or tungsten by a vapor deposition method, a printing firing method, a CVD method, or the like.
[0014]
An insulating sheet 6 is attached to the upper surface of the back electrode layer 5. The insulating sheet 6 has a hole 6a for exposing the surface of the electrode portion 5a corresponding to each electrode portion 5a. The insulating sheet 6 is, for example, an insulating sheet made of polyester having a thickness of about 75 μm.
In this way, the display sheet component using EL is completed by bonding the insulating sheet 6 to the upper surface of the back electrode layer 5.
[0015]
Further, as a simple method, a display component using EL may be manufactured as follows.
First, by bonding a copper foil and an aluminum foil on the insulating sheet 6 with a conductive adhesive, the electrode portions 5a formed in a matrix and having a square planar shape are formed. Then, the insulating sheet 6 is placed on the insulating substrate 1 on which the transparent electrode layer 2, the light emitting layer 3, and the dielectric layer 4 are formed in advance so that the electrode section 5a and the dielectric layer 4 face each other. The display body component may be manufactured by bonding together.
[0016]
The display component using the EL described above has a configuration as shown in FIG. That is, a transparent electrode layer 2, a luminous layer 3, a dielectric layer 4, and the back electrode layer 5 are formed between the insulating substrate 1 and the insulating sheet 6, and a part of the electrode portion 5a is formed of the insulating sheet. 6 is configured to be exposed from the hole 6a.
[0017]
Next, a case where a display device is manufactured by using the display component using the EL will be described with reference to FIGS. FIG. 3 is a diagram showing a manufacturing process of a display device using the display component, FIG. 4 is a diagram showing a completed state of the display device, and FIG. 5 is a diagram showing a display state.
[0018]
Here, a display device that displays the number “4” will be described as an example. First, a conductive tape 7 such as a copper foil tape is attached while pressing down from above so as to form “4” from above the insulating sheet 6. At this time, the conductive tape 7 is deformed and connected to the electrode portion 5a via the hole 6a of the insulating sheet 6. The conductive tape 7 needs to be connected to the lowermost electrode portion 5a connected to the power supply line 5b.
Thereafter, to cover the conductive tape 7, an insulating sheet 8 is stuck thereon. As the insulating sheet 8, an insulating sheet of the same quality as the above-described insulating sheet 6 can be used.
[0019]
A display device using the display component thus formed has a configuration as shown in FIG. That is, between the insulating substrate 1 and the insulating sheet 8, the transparent electrode layer 2, the light emitting layer 3, the dielectric layer 4, the back electrode layer 5, and the hole 6 a through which a part of the electrode portion 5 a is exposed are provided. An insulating sheet 6, a conductive tape 7 for forming a circuit pattern for forming desired characters and pictures, and an insulating sheet 8 are formed.
[0020]
In the display device A thus configured, when an AC voltage or a DC pulse voltage is applied to the transparent electrode layer 2 and the terminal portion 5c, that is, an AC voltage or a DC pulse voltage is applied between the transparent electrode layer 2 and the electrode portion 5a. Then, the light emitting layer 3 (light emitting portion 3a) is excited by an AC electric field or a DC pulse electric field generated by the voltage to emit light.
At this time, since the light emission is performed only in the light emitting portion 3a corresponding to the electrode portion 5a connected by the conductive tape 7, as shown in FIG. 5, it is derived to the outside as a numeral "4" and displayed.
[0021]
As described above, a display device is formed by attaching a conductive tape to a display component using EL so as to have desired characters and shapes, and attaching an insulating sheet thereon. You.
Therefore, a user who purchases the display component using the EL can easily display characters, patterns, and the like freely. Further, the display content can be easily changed by peeling off the insulating sheet from the display device and reattaching the conductive tape.
[0022]
In the above-described embodiment, the display using the character "4" has been described in the figures showing the states. However, it is possible to display all kinds of figures, figures, people, animals, landscapes, and the like. Further, in the above embodiment, the case where the conductive tape is used has been described. However, the electrode portions formed in a matrix may be electrically connected using the conductive ink.
[0023]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a display component using an EL and a display device using the EL, in which a user can freely produce or change display contents.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams showing a manufacturing process of a display component using the EL according to the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a cross-sectional view taken along line II of FIG. It is.
FIGS. 2A and 2B are diagrams showing a completed state as a display component using EL, wherein FIG. 2A is a plan view, and FIG. 2B is a sectional view taken along line II-II of FIG.
FIGS. 3A and 3B are views showing a state in which a conductive tape is adhered to the display component according to the present invention, wherein FIG. 3A is a plan view, and FIG. It is sectional drawing.
FIGS. 4A and 4B are diagrams showing a completed state as a display device according to the present invention, wherein FIG. 4A is a plan view and FIG. 4B is a cross-sectional view taken along line IV-IV of FIG.
FIG. 5 is a plan view showing a light emitting state of the display device according to the present invention.
6A and 6B are views showing a display device using a conventional EL, in which FIG. 6A is a plan view, and FIG. 6B is a sectional view taken along line VI-VI of FIG.
[Explanation of symbols]
1 Insulating substrate 2 Transparent electrode layer (ITO)
3 Light-emitting layer (EL layer)
3a light emitting section 4 dielectric layer 5 back electrode layer 5a electrode section 5b power supply line 5c terminal section 6 insulating sheet 6a hole 7 conductive tape 8 insulating sheet 21 insulating sheet 22 transparent electrode layer 23 light emitting layer 24 dielectric layer 25 back electrode Layer 26 Insulating layer A Display

Claims (4)

In a display component using an EL in which a transparent electrode layer, a light-emitting layer, a dielectric layer, and a back electrode layer are formed between an insulating substrate and an insulating sheet,
The back electrode layer is formed in a matrix shape, as a plurality of electrode portions having a planar shape partitioned into a rectangular shape or a circular shape,
A display component using EL, wherein a part of each electrode portion is exposed by a hole formed in the insulating sheet. In a display component using an EL in which a transparent electrode layer, a light-emitting layer, a dielectric layer, and a back electrode layer are formed between an insulating substrate and an insulating sheet,
On the transparent electrode layer, the luminous body layer is formed in a matrix shape, as a plurality of light emitting portions in which a planar shape is partitioned into a rectangular shape or a circular shape,
The back electrode layer is formed at each position corresponding to the light emitting portion, as a plurality of electrode portions having a planar shape partitioned into a rectangular shape or a circular shape,
A display component using EL, wherein a part of each electrode portion is exposed by a hole formed in the insulating sheet. A display device using a display component using the EL according to claim 1 or 2.
A display device, wherein electrode portions exposed by holes formed in the insulating sheet are electrically connected to each other by a conductive member. The display device according to claim 3, wherein the conductive member is a conductive tape or a conductive ink.

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