JP2003255871A - El display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an EL (electroluminescence) display device in which a light source is thin to increase a place where the EL display device can be installed, and power consumption is small. <P>SOLUTION: This EL display device has a plurality of EL body groups 5rG and 5sG provided so as to form a plurality of EL body patterns in the same area by sequentially arranging a plurality of EL bodies 5r and 5s on a transparent electrode board 4 with an interval s, and a transparent body 2 provided with the light-transmitting patterns of display contents 5r and 5s formed in accordance with each of the plurality of EL body groups 5rG and 5sG by being arranged dividedly in front of the respective EL bodies 5r and 5s forming the plurality of EL body groups 5rG and 5sG, selectively turns on an optional EL body group and selectively displays display contents corresponding to the optical EL body group. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an EL display device, and more particularly to an EL display device which selectively lights an arbitrary EL body group and selectively displays the display content corresponding to the EL body group.

[0002]

2. Description of the Related Art Conventionally, in a decorative panel, an advertising board, a road sign, etc., various display devices have been provided with a fluorescent lamp or an LED as a light source on the back surface for illumination in order to enhance the display effect.

However, in a display device using these light sources, since the light source becomes large, the display device also becomes large.
Further, since the shape of the display device is also limited, the places where the display device can be installed are limited, and the power consumption is relatively large.

[0004]

Therefore, there has been a demand for an EL display device which has a thin light source, has a wider number of places where it can be installed, and consumes less electric power. The present invention has been made in view of the above circumstances, and an object thereof is to provide an EL display device in which the light source is thin, the place where it can be installed is expanded, and the power consumption is small.

[0005]

In order to achieve the above object, according to one aspect of the present invention, a plurality of EL bodies having a light emitting portion are sequentially arranged on a transparent electrode plate and spaced apart from each other. The plurality of EL body groups provided so that the light emitting patterns are formed in the same region, and the plurality of EL body groups that are arranged in front of each EL body forming the plurality of EL body groups, A transparent body provided with a light-transmitting pattern of display contents formed corresponding to each EL body group, selectively illuminating an arbitrary EL body group, and selectively displaying the corresponding display content. There is provided an EL display device characterized in that As a result, an EL display device in which the light source is thin, the places where it can be installed is expanded, and the power consumption is low is realized.

In a preferred example, the number of EL bodies is two, and the two display contents are selectively displayed. This allows
Cleaner display contents are selectively displayed.

[0007] In another preferred example, it is possible to see through a space between a plurality of EL bodies having the light emitting portion.
This allows you to see the outside.

[0008] In another preferred example, the plurality of EL body groups having the light emitting portion and the transparent body are an EL display panel for advertisement decoration housed in a panel. This improves the display effect in the room.

In another preferable example, the plurality of EL body groups having the light emitting portion and the transparent body are EL display road signs attached to a sign board. As a result, the driver can be promptly and surely notified of the road information, and the accident can be prevented.

Further, in another preferred example, an air temperature sensor for detecting the outside air temperature is provided, and the display contents are switched by an outside air temperature data signal from the air temperature sensor. This allows the driver to be notified of road information such as road freezes quickly and reliably.
Accident prevention is realized.

In another preferable example, the plurality of EL body groups having the light emitting portion and the transparent body are an EL display floor mat placed on a floor mat. This enables better customer service.

Another preferred example is an EL display blind in which the transparent electrode plate including the back surface of the back electrode is colored in a desired color and can be seen through a gap. As a result, it becomes possible to know the situation of a passerby outside the store by sucking the customer and seeing through the gap from the inside of the store.

In another preferred example, the plurality of EL body groups having the light emitting portion and the transparent body are attached to a transparent plate, and the transparent electrode plate including the back surface of the back electrode is colored in a desired color. In addition, it is an EL display advertisement panel that can be seen through a gap. As a result, the advertising effect is improved and it becomes possible to know the external situation.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of an EL display device according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a first example of an EL display device according to the present invention.
FIG. 2 is a conceptual diagram of a decorative EL display panel that is an embodiment, and FIG. 2 is a sectional view thereof.

As shown in FIGS. 1 and 2, the decorative EL display panel 1 includes a transparent body located on the front surface, for example, a transparent plate 2, and a plurality of types printed on the transparent plate 2 with a light-transmitting ink. , The first picture 3 as two kinds of display contents, for example
r and the second picture 3s, and the first picture 3r and the second picture 3
transparent electrode plate 4 provided so as to sandwich s with transparent plate 2
And the pattern is printed on this transparent electrode plate 4, and the first picture 3
From a first EL body group 5rG composed of a plurality of first EL bodies 5r provided to face r, and a plurality of second EL bodies 5s provided to face the second picture 3s. Become the second E
It has an L body group 5sG, and these are entirely housed in the panel 6.

The first picture 3r shown in FIG. 1 is for displaying a bright red rose flower as shown in FIG. 3, and the second picture 3s is as vivid as shown in FIG. This is for displaying the yellow sunflower flower. Further, as shown in FIG. 5, the first picture 3r of FIG. 1 is formed by a pattern in which a rose flower is divided into a plurality of parts and a part 3r1 of the rose is cut off, and the second picture 3s of FIG. As shown in FIG. 6, the sunflower flower is divided into a plurality of parts, and a part 3s1 of the sunflower is cut off to form a rose part 3r1 and a part 3 of the sunflower.
s1 each have a gap S and are alternately arranged, so that both patterns are formed in the same region. In addition, a part of rose 3
The width of r1 and the part 3s1 of the sunflower is preferably 1 to 2 mm, and the gap S is preferably about 0.5 to 1 mm.

As shown in FIG. 2, the first EL body group 5rG is composed of a plurality of first EL bodies 5r provided so as to face each of the rose parts 3r1.

The first EL body 5r is provided by vapor deposition on one surface of the transparent electrode plate 4 in the form of a film made of a synthetic resin such as polyethylene terephthalate (PET). For example, from indium tin oxide (ITO). And the transparent electrode 8 provided with the terminal portion 7r (see FIG. 7)
r, a light-emitting body that is provided by being stacked on the transparent electrode 8r, and is mixed with a fluororesin binder and a light-emitting body formed by doping copper (Cu) into zinc sulfide (ZnS) that is a fluorescent material, and printing the ink. A light emitting layer 9r which is formed by drying and emits white light, and an ink in which barium titanate (BaTiO ₃ ) which is a high dielectric material and a resin binder are mixed and stirred, which are provided by being stacked on the light emitting layer 9r, are printed. An insulating layer 10r formed by drying and an electrode portion (not shown) made of a conductive paste, which is provided by being laminated on the insulating layer 10r, are provided, and a terminal portion 11r is attached to the electrode portion. It also has a rear electrode 12r.

As shown in FIG. 2, the second EL body group 5sG has a structure similar to that of the first EL body group 5rG, and faces a part 3s1 of a plurality of sunflowers. And a plurality of second EL bodies 5s provided therein. The second EL body 5s is provided on one surface of the transparent electrode plate 4,
The transparent electrode 8s provided with the terminal portion 7s, the light emitting layer 9s provided on the transparent electrode 8s, the insulating layer 10s provided on the light emitting layer 9s, and the insulating layer 10s. It has a back electrode 12s that is laminated on top and has a terminal portion 11s attached thereto.

Further, as shown in FIG. 7, the transparent electrode group 8rG forming a part of the first EL body group 5rG and the back electrode group 12rG are paired, and a changeover switch 13 having a general timer is incorporated. Connected to the power supply 14 via
Transparent electrode group 8s forming part of the second EL body group 5sG
G and the rear electrode group 12sG form a pair, and the changeover switch 1
3 is connected to the power supply 14. The power supply 14 has a rectifier circuit 16 connected to a commercial power supply 15 and an inverter 17.

In the first embodiment, the number of EL body groups is set to two, and two display contents are displayed more beautifully. However, depending on the display contents, the number of EL body groups may be three. Alternatively, the display content may be set to 4 and display contents of 3 to 4 types may be selectively displayed. Further, the gap formed between the EL bodies may be formed between the adjacent electrodes, and thus the gap may be covered by extending printing of any display content to the gap.

Display using the decorative EL display panel, which is the first embodiment of the EL display device according to the present invention, will now be described.

As shown in FIG. 1, the commercial power source 1 of the power source 14
5 is rectified when an alternating current is supplied from the rectifier circuit 16 to the rectifier circuit 16, and a voltage is applied to the transparent electrode group 8rG and the rear electrode group 12rG via the changeover switch 13 by setting a predetermined frequency by the inverter 17 to make each light emitting layer 9r white. The entire first EL body group 5rG is caused to emit light. When the first EL body group 5rG emits light, a part 3r1 of each rose located opposite to the first EL body group 5rG is illuminated, and the entire first picture 3r is illuminated and separated. For the person who views the EL display device 1, the first picture 3r is as if it were as shown in FIG.
It looks like a bright red rose flower.

At a predetermined time, the change-over switch 13 with a built-in timer operates to switch the power supply. When this switching is performed, a voltage is applied to the transparent electrode group 8sG and the back electrode group 12sG to cause each light emitting layer 9s to emit white light, and the second E
The entire L body group 5sG is made to emit light. This second EL body group 5
When sG emits light, a part 3s1 of the sunflower located opposite to the second EL body group 5sG is illuminated, the entire second picture 3s is illuminated, and the second picture 3s is as if in FIG. It looks like the bright yellow sunflower flower shown.

As described above, by switching the light emission of the first EL body group 5rG and the light emission of the second EL body group 5sG, the rose flower and the sunflower flower can be selectively switched and displayed. The display effect is improved. Also, the light source is EL
Since the body is used, the light source is thin, the place where it can be installed is expanded, and the power consumption is small.

Furthermore, since two types of rose flower and sunflower flower are formed at the same central position on one transparent plate 2 and are selectively illuminated and displayed, both flowers are EL display devices. Since the images can be displayed in the same area in the center of 1, the display effect is improved. Further, unlike a case where a plurality of displays are formed on a plurality of transparent electrode plates and these are laminated, manufacturing is easy.

A second aspect of the EL display device according to the present invention
An embodiment will be described.

The second embodiment is a decorative EL display panel which selectively displays two pictures as shown in FIG. 1, whereas two notification contents are displayed. This is an EL display panel road sign that selectively displays this.

For example, as shown in FIGS. 8 and 9, the road sign 1A of the second embodiment is connected through the same changeover switch 13A as shown in FIG. 7 and is similar to the EL body group shown in FIG. Has a first EL body group 5ArG and a second EL body group 5AsG of the structure, and the first EL body group 5ArG and the second EL body group 5AsG are formed by being printed on the transparent plate 2A. The transparent plate 2A is housed in the sign plate 6A. Further, as shown in FIG. 8, as in the case of FIG. 2, the first display content is a pattern in which the display content of the “freezing attention” 3Ar is partially cut off by the red ink on the transparent plate 2A. As the second display content, the display content of “with curve” 3Ar in black ink is patterned and printed in a state where a part of the display content is cut off, and both patterns are printed in the same area. There is.

The "freezing caution" 3Ar pattern is the first E
It is provided so as to face the L body group 5ArG, and as shown in FIG. 9, the “with curve” 3As is provided so as to face the second EL body group 5AsG. The changeover switch 13A is connected to an inverter 17A, the inverter 17A is connected to a charger 19A, and the charger 19A is further connected to a solar power generator 20A. The changeover switch 13A is connected to a general control circuit 22A to which the temperature detection sensor 21A is connected. Although power can be easily supplied even in a mountainous area by using the solar power generator 20A, if the road sign 1A is installed near the city and power can be easily supplied, as shown in FIG. Alternatively, the power may be supplied from a commercial power source.

Therefore, the road sign 1A has, for example, an outside air temperature of 0.
When the temperature falls below ℃ and the road freezes and becomes dangerous, the temperature sensor 21A detects the outside air temperature, transmits this outside air temperature data signal to the control circuit 22A, and the control circuit 22A controls the changeover switch 13A. Power is supplied from the inverter 17A to the first EL body group 5ArG, and the first EL body group 5Ar is supplied.
G is made to emit light, and "freezing caution" 3Ar is displayed in bright red. As a result, the driver can quickly and surely detect the road condition and prevent accidents.

When the outside air temperature is 0 ° C. or above and there is no fear of freezing of the road, the temperature sensor 21A detects the outside air temperature and sends the outside air temperature data signal to the control circuit 22A. Power is supplied to the second EL body group 5ArG from the inverter 17A via the changeover switch 13A, the second EL body group 5ArG is caused to emit light, and "with curve" 3As is displayed in black to call general attention. .

In the second embodiment, the EL display road sign 1A is provided with the outside air sensor 21, so that the display contents can be selectively switched according to the outside air temperature.
It is possible to inform the driver of more important information.

The means for switching the display contents is not limited to the temperature sensor, but may be a timer.

Further, a third embodiment of the EL display device according to the present invention will be described.

The third embodiment is a decorative EL display panel which selectively displays two pictures as shown in FIG. 1, whereas two greeting contents are displayed. This is an EL display floor mat that selectively displays this.

For example, as shown in FIG. 10 and FIG.
The EL display floor mat 1B of the third embodiment has a changeover switch 13B similar to that shown in FIG. 7, and the first EL body group 5BrG and the second EL body group 5BsG are connected via this changeover switch 13B. It is provided. Further, as shown in FIG. 10, similarly to the case shown in FIG. 2, as the first display content, the display content of “Welcome” 3Br with the red ink is partially cut off on the transparent plate 2A. As shown in Fig. 11, it is printed after being printed, and as the second display content, "Thank you" with black ink.
The display content of 3Bs is patterned and printed in a state where a part of the display content is cut off, and both patterns are printed in the same area.

As shown in FIG. 10, the "Welcome" 3Br pattern is provided facing the first EL body group 5BrG, and as shown in FIG. 11, "Thank you" 3Bs is the second. It is provided so as to face the EL body group 5BsG. The control circuit 22B that controls the changeover switch 13B is provided with a store entrance detection sensor 23B that is installed near the entrance of the store and that detects a customer's store entrance, and a store opening sensor 24B that detects the store opening. Also, this EL
The display floor mat 1B includes a first EL body group 5BrG and a second EL body group 5Bs on the normal floor mat 25B.
It is preferable that the transparent cover 25B is provided so as to face G, and that the transparent plate 2B is detachably provided with a flexible transparent cover 25B.

Since the other structure is not different from that of the EL display device shown in FIG. 1, the same reference numerals are given and the description thereof is omitted.

Therefore, when a customer comes to the store and enters the store, the store detection sensor 23B detects the customer, and the control circuit 22B controls the changeover switch 13B so that the inverter 17B outputs the first signal.
To the first EL body group 5BrG.
Light up and display "Welcome" 3Br in bright red. As a result, the customer receives a greeting from the store. Further, when a customer opens a store to return, the store detection sensor 24B detects the customer and the control circuit 22B
The changeover switch 13B is controlled by the inverter 17B
From the second EL body group 5BsG to power the second EL body group 5BsG to emit light, "Thank you" 3
Bs is displayed in black. As a result, the customer will receive a greeting when returning.

By using the EL display device in the EL display floor mat as described above, better customer service can be achieved.

Further, a fourth embodiment of the EL display device according to the present invention will be described.

The fourth embodiment is a decorative EL display panel which selectively displays two pictures as shown in FIG. 1, whereas two pictures are displayed. This is an EL display blind for selectively displaying this.

For example, as shown in FIGS. 12 and 13,
The EL display blind 1C of the fourth embodiment has a changeover switch 13C similar to that shown in FIG. 7, and through the changeover switch 13C, the first EL body group 5CrG and the second EL body group 5CrG.
L electrode group 5CsG is thick and flexible transparent electrode plate 4C
It is provided in. Further, as shown in FIG.
As shown in FIG. 12, as the first display content, the picture of “Santa Claus” 3Cr is patterned in a state where a part of the picture is cut out and color-printed on the transparent plate 2C, and as shown in FIG.
As the second display content, a picture of the "doll" 3Cs is patterned in a state where a part of the picture is cut off and color-printed on the transparent plate 2C, and both patterns are printed in the same area.

As shown in FIG. 12, "Santa Claus"
The 3Cr pattern is provided so as to face the first EL body group 5CrG, and as shown in FIG. 13, the "doll" 3Cs is provided so as to face the second EL body group 5CsG. Further, as shown in FIG. 14, a beige ink close to the wall color can be printed on the entire surface of the transparent electrode plate 4C including the back electrode (not shown) made of carbon paste as shown in FIG. It is painted. Therefore, by attaching the EL display blind 1C as a blind to a window of a toy store, for example, "Santa Claus" and "doll" are selectively displayed to attract customers, and from the inside of the store, a gap SC
You can see the situation of passersby outside the store by seeing through.

The change-over switch 13C is a timer 26.
The switching operation is performed by C via the control circuit 22C.
In addition, by using the mounting ring on the EL display blind,
The L display blind can be attached to the curtain rail and used as a commercial or household EL display curtain.

Further, a fifth embodiment of the EL display device according to the present invention will be described.

The fifth embodiment is an EL in which the fourth embodiment shown in FIGS. 12 to 14 selectively displays two pictures.
In contrast to the display blind, the EL display advertisement panel has two pictures as display contents and selectively displays them.

For example, the EL display advertisement panel 1D of the fifth embodiment shown in FIGS. 15 to 17 has the same structure as that of the fourth embodiment shown in FIGS. 12 to 14, and the EL display The advertisement panel 1D is configured to selectively display "Tonight's hotel is XX hotel" 3Dr as the first display content and "1 night XX yen, TEL" 3Ds as the second display content. The EL display advertisement panel 1D is attached to the rear window 27D of a taxi. The timer is set to switch the display contents in a short time, and a thin transparent substrate facing the interior of the vehicle and coated in a desired color is used. Furthermore, EL display advertising panel 1D
Is used in a structure and condition that clears legal regulations.

Therefore, by selectively switching the display contents to be displayed, the advertising effect is improved, and as shown in FIG. 15, the driver can see through the gap SD to see the traffic situation behind. I can know.

[0052]

According to the EL display device of the present invention,
It is possible to provide an EL display device that has a thin light source, can be installed in a wide range, and consumes less power.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a first embodiment of an EL display device according to the present invention.

FIG. 2 is a sectional view of a first embodiment of an EL display device according to the present invention.

FIG. 3 is a display diagram showing the first display content of the first embodiment of the EL display device according to the present invention.

FIG. 4 is a display diagram of the second display content of the first embodiment of the EL display device according to the present invention.

FIG. 5 is a pattern diagram of a first display content of the first embodiment of the EL display device according to the present invention.

FIG. 6 is a pattern diagram of a second display content of the first embodiment of the EL display device according to the present invention.

FIG. 7 is a power supply circuit diagram of a first embodiment of an EL display device according to the present invention.

FIG. 8 is a display diagram of the first display content of the second embodiment of the EL display device according to the present invention.

FIG. 9 is a display diagram showing the second display content of the second embodiment of the EL display device according to the present invention.

FIG. 10 is a display diagram of the first display content of the third embodiment of the EL display device according to the present invention.

FIG. 11 is a display diagram of the second display content of the third embodiment of the EL display device according to the present invention.

FIG. 12 is a display diagram of the first display content of the fourth embodiment of the EL display device according to the present invention.

FIG. 13 is a display diagram of the second display content of the fourth embodiment of the EL display device according to the present invention.

FIG. 14 is a rear view of the fourth embodiment of the EL display device according to the present invention.

FIG. 15 is a display diagram of the first display content of the fifth embodiment of the EL display device according to the present invention.

FIG. 16 is a display diagram showing the second display content of the fifth embodiment of the EL display device according to the present invention.

FIG. 17 is a rear view of the fifth embodiment of the EL display device according to the present invention.

[Explanation of symbols] 1 decorative panel 2 transparent plate 3r first picture 3r1 part of rose 3s second picture Part of 3s1 sunflower 4 Transparent electrode plate 5r 1st EL body 5rG First EL body group 5s Second EL body 5sG Second EL body group 6 panels 7r terminal 7s terminal 8r transparent electrode 8s transparent electrode 8rG transparent electrode group 8sG transparent electrode group 9r light emitting layer 9s light emitting layer 10r insulating layer 10s insulation layer 11r Terminal part 11s terminal part 12r Back electrode 12s back electrode 12rG back electrode group 12sG back electrode group 13 Changeover switch 14 power supply 15 Commercial power supply 16 Rectifier circuit 17 Inverter S gap

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mutsumi Sasao             2-3-4 Kitaeno, Taito-ku, Tokyo Co., Ltd.             Inside Sasao F-term (reference) 2D064 BA01 EA02 EA03 EA21 EB07                       FA04 FA06                 3K007 CB01 DA05 GA00                 5C096 AA21 BB16 BC01 BC15 CA02                       CA06 CA12 CA17 CA28 CA32                       CA35 CB01 CC07 DC04 DC11                       DC12 DC19 DC21 DD01 EA04                       FA02 FA03 FA05 FA07 FA09                       FA13

Claims (9)

[Claims] 1. A plurality of EL body groups provided so that a plurality of EL bodies having a light emitting portion are sequentially arranged on a transparent electrode plate so that a plurality of EL light emitting patterns are formed in the same region. By arranging in a divided state in front of each EL body forming the plurality of EL body groups, a light transmissive pattern of display content formed corresponding to each of the plurality of EL body groups is provided. An EL display device having a transparent body, selectively illuminating an arbitrary EL body group, and selectively displaying display contents corresponding thereto. 2. The EL display device according to claim 1, wherein the number of the EL bodies is two, and two display contents are selectively displayed. 3. The EL display device according to claim 1, wherein the EL display device can be seen through an interval between a plurality of EL bodies having the light emitting unit. 4. The EL display device according to claim 1, wherein the plurality of EL body groups having the light emitting unit and the transparent body are advertisement display EL display panels housed in a panel. EL display device. 5. The EL display device according to claim 1, wherein the plurality of EL body groups having the light emitting unit and the transparent body are EL display road signs attached to a sign board. EL display device. 6. The EL display device according to claim 5, further comprising an air temperature sensor for detecting an outside air temperature, and switching display contents by an outside air temperature data signal from the air temperature sensor. 7. The EL display device according to claim 1, wherein the plurality of EL body groups having the light emitting unit and the transparent body are EL display floor mats mounted on a floor mat. Characteristic EL display device. 8. The EL display device according to claim 1, wherein the transparent electrode plate including the back surface of the back electrode is colored in a desired color and can be seen through a gap. EL which is a display blind
Display device. 9. The EL display device according to claim 1, wherein a plurality of Es having the light emitting unit are provided.
The L body group and the transparent body are EL display advertisement panels which are attached to the transparent plate, and the transparent electrode plate including the back surface of the back electrode is colored in a desired color and can be seen through the gap. EL display device.