JP2003045651A - Organic el element and display device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an organic EL element manufacturable at a low-cost facility and a display device capable of being thinned to a large extent. SOLUTION: A light-emitting layer 31 is formed in a predetermined light- emitting pattern by screen printing method and a second electrode layer 51 is formed in the shape of a thin film using screen printing method. Also, a first electrode layer 21 is formed in a predetermined light-emitting pattern by forming a thin film on a substrate 11 using screen printing method, and then etching it. The light-emitting layer 31 and the second electrode layer 41 are formed in the shape of thin films by screen printing method. The display device 10A has the organic EL element 10 and a switch part 60 is provided on the substrate 11 of the organic EL element 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic EL element and a display device using the organic EL element.

[0002]

2. Description of the Related Art An organic electroluminescence device (organic EL device) is a device which injects holes and electrons from the outside and emits light by their recombination energy. Since it has the advantage that it can be reduced, research and development is currently being actively conducted.

FIG. 15 shows a conventional structure of an organic EL element.

In FIG. 15, reference numeral 11 is a substrate. The substrate 11 is formed of a transparent glass or synthetic resin film. The first electrode layer 2 is formed on the substrate 11.
1P is formed. The first electrode layer 21P is often used as an anode, for example, ITO on the substrate 11.
(Indium tin oxide) is formed by a vacuum deposition method or a sputtering method.

A light emitting layer 31P is formed on the above-mentioned first electrode layer 21P. The light emitting layer 31P is formed by depositing an organic compound such as a low molecular weight fluorescent dye or a metal complex using a vacuum deposition method or the like.

A second electrode layer 41P is formed on the light emitting layer 31P. The second electrode layer 41P is
The polarity is opposite to that of the first electrode layer 21P. That is, when the first electrode layer 21P serves as an anode, the second electrode layer 41P serves as a cathode. The second electrode layer 41P is generally formed by depositing aluminum or the like by a vacuum deposition method or a sputtering method.

In the organic EL device having the above structure, holes and electrons injected from the anode (21P) and the cathode (41P) by applying a voltage are recombined in the light emitting layer 31P, and the recombination causes the light emitting layer 31P to be formed. Excited to an excited state. Then, the energy difference when the light emitting layer 31P returns from the excited state to the ground state is emitted as light.

As described above, since the organic EL element is formed of three thin film layers (21P, 31P, 41P) and emits light by itself, it can be used as an ultrathin light emitting element.

[0009]

By the way, in order to manufacture the above-mentioned organic EL element, a very expensive vacuum vapor deposition apparatus or sputtering apparatus is required, resulting in high equipment cost, and as a result, the element is also expensive. Will be.

When an organic EL element is incorporated in a display device, a switch section is often provided on a part of the substrate of the element for the purpose of downsizing, and the switch section is similar to the organic EL element. There is a demand for making the display device thinner and making the display device much thinner.

An object of the present invention is to provide an organic EL element which can be manufactured with low cost equipment. Moreover, it aims at providing the display apparatus using the organic EL which can achieve a large-scale thinning.

[0012]

In order to achieve the above object, the invention of claim 1 provides a first electrode layer formed on a substrate and a second electrode having a polarity opposite to that of the first electrode layer. Electrode layer of
An organic EL device having a light emitting layer made of an organic compound interposed between the both electrode layers, wherein the light emitting layer is formed into a predetermined light emitting pattern shape by a screen printing method, and the second electrode layer is formed. It is an organic EL element formed in a thin film shape by a screen printing method.

In the case of the first aspect of the invention, the light emitting layer is formed by the screen printing method, for example, as follows. First, an image corresponding to a light emitting pattern is formed on a mesh-shaped screen, and a portion through which a printing paste passes (a portion through which a printing paste passes) and a portion that does not pass through (a portion through which a printing paste does not pass) are formed into a plate. . As the printing paste, for example, a paste containing a polymeric fluorescent substance as a main component can be selected.

Next, the printing paste is placed on the plate described above, and the printing paste is extruded from the printing paste passing portion of the plate using a squeegee, and the printing layer is formed on the printing target (first electrode layer). To form. The printed layer on the first electrode layer becomes a light emitting layer.

Similarly, the formation of the second electrode layer by the screen printing method is performed as follows. That is, an image is formed on the screen so as to cover the light emitting layer to form a printing paste passing portion and a printing paste non-passing portion to form a plate. As the printing paste, for example, a paste containing aluminum as a main component can be selected.

Next, the printing paste is placed on the above-mentioned plate, and the printing paste is extruded from the printing paste passing portion of the plate using a squeegee to form a printing layer on the printing object (light emitting layer). . The printed layer on this light emitting layer is the second
Electrode layer.

As the first electrode layer, for example, a commercially available substrate with an ITO film (glass plate or synthetic resin film) can be used.

As described above, the light emitting layer and the second layer are formed without using an expensive film forming apparatus such as a vacuum vapor deposition apparatus and using only a relatively inexpensive device for screen printing (a plate, a printing paste, a squeegee, etc.). Can be formed. Therefore, it is possible to provide an organic EL element that can be manufactured with low-priced equipment.

Further, the invention of claim 2 is such that a first electrode layer formed on a substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an interposition between the two electrode layers. An organic EL device having a light emitting layer made of an organic compound, wherein the light emitting layer is formed into a thin film shape by a screen printing method, and the second electrode layer is formed into a predetermined light emitting pattern shape by a screen printing method. It is the formed organic EL element.

According to the second aspect of the invention, as in the case of the first aspect of the invention described above, a relatively inexpensive screen printing tool (without using an expensive film forming apparatus such as a vacuum vapor deposition apparatus) is used. Plate, printing paste, squeegee, etc. only)
Can be formed. Therefore, it is possible to provide an organic EL element that can be manufactured with low-priced equipment.

According to a third aspect of the invention, the first electrode layer formed on the substrate, the second electrode layer having a polarity opposite to that of the first electrode layer, and the interposition between the two electrode layers. An organic EL device having a light emitting layer made of the above organic compound, wherein the first electrode layer is formed into a predetermined light emitting pattern shape by a screen printing method, and the light emitting layer and the second electrode layer are formed. It is an organic EL element formed in a thin film shape by a screen printing method.

In the case of the invention of claim 3, as in the case of the invention of claim 1 or 2, the screen printing is relatively inexpensive without using an expensive film forming apparatus such as a vacuum vapor deposition apparatus. It is possible to form all three layers of the first and second electrode layers and the light emitting layer using only the equipment (plate, printing paste, squeegee, etc.). Therefore, it is possible to provide an organic EL element that can be manufactured with much lower cost equipment.

According to a fourth aspect of the present invention, a first electrode layer formed on the substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an interposition between the two electrode layers are provided. An organic EL element having a light emitting layer made of an organic compound, wherein the first electrode layer is formed into a predetermined light emitting pattern by etching after forming a thin film on the substrate by a screen printing method, The etching process prints a layer to be peeled off by a screen printing method on a portion to be etched of a thin film formed on the substrate, and peels off the layer to be peeled from the substrate together with the thin film portion adhered to the layer to be peeled off. And the light emitting layer was formed in a thin film shape by the screen printing method on the first electrode layer, and the second electrode layer was formed in a thin film shape by the screen printing method on the light emitting layer. Special Is an organic EL element to be.

According to the invention of claim 4, the first electrode layer is formed into a predetermined light emission pattern by etching after forming a thin film on the substrate by a screen printing method, and the light emitting layer and the second electrode layer are formed. Since the electrode layer is formed in a thin film shape by the screen printing method, the plate can be easily manufactured even if the light emitting pattern has a complicated shape. Therefore, even if the emission pattern has a complicated shape, it can be manufactured with low-cost equipment.
An L element can be provided.

According to a fifth aspect of the present invention, the first electrode layer formed on the substrate, the second electrode layer having a polarity opposite to that of the first electrode layer, and the two electrode layers are interposed. An organic EL device having a light emitting layer made of an organic compound, wherein the conductive film formed on the substrate is subjected to etching treatment to form a predetermined light emitting pattern in the first electrode layer, and the etching treatment is performed. By printing a layer to be peeled on a portion of the conductive film on the substrate to be etched by a screen printing method, and peeling off the layer to be peeled from the substrate together with the conductive film portion adhered to the layer to be peeled. It is an organic EL device characterized by the fact that

According to the fifth aspect of the invention, as in the case of the fourth aspect of the invention, the plate can be easily produced even if the light emitting pattern has a complicated shape. Therefore, it is possible to provide an organic EL element that can be manufactured with low-cost equipment even if the light emitting pattern has a complicated shape.

The invention of claim 6 is based on claims 1 to 5.
In addition to the organic EL element according to any one of the above items, a switch unit is provided on the substrate of the organic EL element,
The switch portion is a thin film-shaped lower electrode layer printed by a screen printing method on a predetermined region of the substrate, a synthetic resin film provided so as to be separated from the lower electrode layer via a spacer, A thin film-shaped upper electrode layer printed so as to face the lower electrode layer by a screen printing method on the inner surface of a synthetic resin film, and the lower electrode layer and the upper electrode layer are brought into contact with and separated from each other.
A display device using an organic EL element configured to control power supply to the element.

In the case of the invention of the sixth aspect, since the lower electrode layer and the upper electrode layer are formed in a thin film shape by using the screen printing method, the spacer can be made extremely thin. Therefore, the switch section can be made thin like an organic EL element,
As a result, it is possible to provide a display device using an organic EL that can achieve a significant reduction in thickness.

The invention according to claim 7 is a display device using an organic EL element, wherein the lower electrode layer of the switch portion is formed by using a part of the first electrode layer of the organic EL element. is there.

In the case of the invention of claim 7, the parts of the switch portion and the organic EL element can be shared, and the same action and effect as in the case of the invention of claim 6 can be obtained. It is possible to further reduce the cost and the manufacturing time.

The invention of claim 8 comprises the organic EL device according to any one of claims 1 to 5, and
A transparent or semi-transparent switch part for the organic EL element is provided, and the switch part is a thin film-shaped lower electrode layer printed by a screen printing method on the second electrode layer of the organic EL element, and a lower electrode. A synthetic resin film provided so as to be separated from the layer via a spacer, and a thin film-shaped upper electrode layer printed on the inner surface of the synthetic resin film by a screen printing method so as to face the lower electrode layer. The display device includes an organic EL element that is configured to control the power supply to the organic EL element by contacting and separating the lower electrode layer and the upper electrode layer.

In the case of the invention of claim 8, the switch portion can be made thin like the organic EL element, and as a result, the switch portion can be illuminated by the organic EL element while achieving a significant reduction in thickness. A display device using an element can be provided.

[0033]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First embodiment)

The organic EL device 10 according to the present invention comprises a substrate 1
1 is formed on the first electrode layer 21, a second electrode layer 41 having a polarity opposite to that of the first electrode layer 21, and an organic layer interposed between the two electrode layers (21, 41). A light emitting layer 31 made of a compound, the light emitting layer 31 is formed in a predetermined light emitting pattern shape by a screen printing method, and the second electrode layer 41 is formed in a thin film shape by a screen printing method. There is.

Here, in the organic EL element 10, one of the three layers (the first electrode layer 21, the light emitting layer 31, and the second electrode layer 41) has a predetermined light emitting pattern, so that the light emitting pattern is obtained. Can be made to emit light. In this embodiment, the light emitting layer 31 has a predetermined light emitting pattern shape.

Specifically, the substrate 11 is formed of a transparent glass plate or a synthetic resin film. In this embodiment, the substrate 11 is formed of a commercially available transparent synthetic resin film with a transparent conductive film (ITO film).

Next, the first electrode layer 21 is formed of the transparent conductive film (ITO film) on the substrate 11 described above. In this embodiment, the first electrode layer 21 is used as the anode.

A light emitting layer 31 is formed on the above-mentioned first electrode layer 21. In this embodiment, the light emitting layer 31
Is formed using a screen printing method as follows.

First, the screen printing plate 3 is prepared. The screen 5 of the printing plate 3 is formed by stretching a mesh of silk, nylon, tetron, stainless steel or the like on a wooden or metal plate frame.

Here, the method for producing the screen printing plate 3 is roughly classified into the following.
(Sitized emulsion) is applied, and a positive is baked on this to develop, a method in which a photosensitive film is pasted on a screen, then the positive is baked, water-developed, the base film is peeled off leaving the photosensitive material, and plate making is carried out. There is a method in which a positive is printed on a photosensitive film, developed, and then attached to a screen, and the base film is peeled off to prepare a plate.

In this embodiment, the above manufacturing method is adopted. The production of the screen printing plate 3 for forming the light emitting layer 31 and the screen printing plate 3 for forming the second electrode layer 41 using the above will be described below.

First, in order to manufacture the screen printing plate 3 for forming the light emitting layer 31, first, as shown in FIG. 2A, a portion corresponding to the light emitting pattern PTN1 (see FIG. 2C) is black. A filled positive 2a is produced.

Next, a photosensitive emulsion is coated on the entire surface of the screen 5. Generally, the photosensitive emulsion is a mixture of diazonium salt or dichromate dissolved and mixed in PVA / vinyl acetate emulsion. There is also a type that uses a photosensitive emulsion in combination. After coating the light-sensitive emulsion, the screen 2 is exposed to light with a positive 2a. As a result, the photosensitive emulsion in the area exposed to the light is cured. The parts that were not exposed to light remain uncured.

When the screen 5 is washed after irradiation with light, only the uncured photosensitive emulsion portion is washed off from the screen 5 and a printing paste passing portion is formed. That is, in the printing paste passing portion, the printing paste is passed through without the mesh of the mesh of the screen 5 being crushed. On the other hand, in the screen portion (printing paste impervious portion) to which the cured photosensitive emulsion adheres, the mesh of the mesh is crushed and the printing paste cannot pass through. In this way, the screen printing plate 3 is produced. In this embodiment, for example, a paste containing a polymeric fluorescent substance as a main component is selected as the printing paste.

Next, using the above screen printing plate 3,
A light emitting layer 31 having a predetermined light emitting pattern shape is screen printed on the first electrode layer 21 as a thin film.

That is, as shown in FIGS. 1A, 1B, and 1C, the printing paste J is placed on the screen printing plate 3 and the squeegee 7 is used to print the printing paste of the plate 3. The printing paste J is extruded from the through portion 5a to form a printing layer on the first electrode layer 21. The printed layer on the first electrode layer 21 becomes the light emitting layer 31.

Next, the second electrode layer 41 is supposed to be used as a cathode. The formation of the second electrode layer 41 is performed as follows using a screen printing method.

First, as shown in FIG. 2B, a positive 2b corresponding to the completed planar shape PTN2 of the electrode layer 41 shown in FIG. 2D is prepared, and the positive 2b is developed on the screen 5. A screen printing plate 3 is prepared.

Next, the second electrode layer 41 is screen-printed on the light emitting layer 31 using the plate 3. Here, for example, a paste containing aluminum as a main component is selected as the printing paste. Specifically, version 3 above
The printing paste is placed on the printing paste, and the printing paste is extruded from the printing paste passing portion of the plate using a squeegee to form a rectangular printing layer that covers the light emitting layer 31. The thin printed layer on the light emitting layer 31 becomes the second electrode layer 41.

As described above, without using an expensive film forming apparatus such as a vacuum evaporation apparatus or the like, only the relatively inexpensive device for screen printing (plate, printing paste, squeegee, etc.) is used and the light emitting layer 31 or the first layer is formed. Two electrode layers 41 can be formed. Therefore, it is possible to provide the organic EL element 10 that can be manufactured with low-priced equipment.

In the above-described embodiment, the light emitting layer 31 of the three layers of the organic EL element 10 has a predetermined light emitting pattern shape, but instead of the light emitting layer 31, the second electrode layer 41 is used.
May have a predetermined light emission pattern shape. That is, the light emitting layer 31 of the organic EL element 10 may be formed in a thin film shape by a screen printing method, and the second electrode layer 41 may be formed in a predetermined light emitting pattern shape by a screen printing method.

Even with such a structure, the light emitting layer 31 having a thin film shape and the second electrode layer 41 having a light emitting pattern shape can be formed using only a relatively inexpensive device for screen printing. Therefore, organic EL that can be manufactured with low-priced equipment
A device 10 can be provided.

In the above embodiment, the first electrode layer 2
1 is a commercially available synthetic resin film with ITO film I
Although formed from a TO film, ITO may be printed in a thin film shape by a screen printing method. In this case, either the light emitting layer 31 or the second electrode layer 41 has a predetermined light emitting pattern shape. With such a configuration, the organic EL element 1
All of the 0's can be formed using only relatively inexpensive screen printing equipment. Therefore, the organic EL element 10 can be manufactured with much lower cost equipment.

Further, the first electrode layer 21 may be formed into a predetermined light emitting pattern shape by etching after forming a thin film on the substrate 11 by a screen printing method. The first electrode layer 21 may be formed into a predetermined light emitting pattern shape by etching a conductive film (for example, the ITO film) formed on the substrate 11.

Here, as shown in FIGS. 5 to 9, the etching process is performed by forming a thin film (or IT) on the substrate 11.
The peeled layer 50 is printed by a screen printing method on a portion to be etched of the O film) and the peeled layer 50 is peeled from the substrate 11 together with the thin film portion (ITO film portion) adhered to the peeled layer 50. Done. With such a configuration, the plate 3 can be easily manufactured even if the light emitting pattern has a complicated shape. Therefore, even if the light emission pattern has a complicated shape, the organic EL element 10 can be manufactured with low-cost equipment.

By changing the shape of the light emitting pattern, it is possible to manufacture organic EL elements having different light emitting surfaces. For example, FIG. 14 (A), (B), (C), (D)
As shown in, a chip type 10E, a surface emitting type 10F, a 7 segment type 10G, and a dot matrix type 10H can be manufactured.

(Second Embodiment)

As shown in FIG. 10, a display device 10A using the organic EL element according to the present invention includes the organic EL element 10 of the first embodiment described above, and on the substrate 11 of the organic EL element 10. A switch portion 60 is provided on the substrate 10. The switch portion 60 is separated from a lower electrode layer 71 having a thin film shape printed on a predetermined region of the substrate 10 by a screen printing method, and the lower electrode layer 71 and a spacer 81. The synthetic resin film 95 and the thin electrode-shaped upper electrode layer 91 printed on the inner surface of the synthetic resin film 95 so as to face the lower electrode layer 71 by a screen printing method. By contacting and separating the layer 71 and the upper electrode layer 91, the organic EL device 10
Is configured to control the power supply to.

Specifically, the lower electrode layer 71 of the switch portion 60 is formed by printing a printing paste containing carbon as a main component on the printing object (in this embodiment, the synthetic resin film 75 adhered on the substrate 10). It is formed into a thin film by screen printing on. The synthetic resin film 75 is formed of PET (polyethylene terephthalate) having a thickness of about 0.1 mm, for example. A circuit pattern is formed on the film 75 in addition to the lower electrode layer 71. The thickness of the lower electrode layer 71 is 1
It is set to 0 μm or less.

When the lower electrode layer 71 is thus formed, a spacer 81 is formed on the surface of the synthetic resin film 75 excluding the lower electrode layer 71 by screen printing.
To form. At this time, the insulating paste is used as the printing paste.

Next, a synthetic resin film 9 made of synthetic resin
Onto 5, a printing paste containing carbon as a main component is screen-printed to form a thin film-shaped conductive layer (91). The conductive film (91) is formed on the synthetic resin film 95.
Besides, the circuit pattern is formed by screen printing. This synthetic resin film 95 with a conductive layer is provided with a spacer 8 so that the conductive layer (91) faces the lower electrode layer 71.
Adhere to 1. The conductive layer thus arranged becomes the upper electrode layer 91.

As described above, in the display device 10A,
Since the lower electrode layer 71 and the upper electrode layer 91 are formed in a thin film shape by using the screen printing method, the spacer 81 can be made extremely thin. Therefore, the switch unit 60 is set to the organic E
Like the L element 10, it can be made thin, and as a result, a significant reduction in thickness can be achieved.

In the above embodiment, the switch section 60 is used.
Although the lower electrode layer 71 of 1. is formed on the substrate 10, it may be formed by utilizing a part of the first electrode layer 21 of the organic EL element 10 as shown in FIG. With this configuration, the parts of the switch section 60 and the organic EL element 10 can be shared, and the cost and the manufacturing time can be further reduced.

Further, in the above embodiment, the switch section 60
Although the display device 10B is arranged in parallel with the organic EL device 10, the display device 10B may be formed by stacking them as shown in FIG.

That is, the display device 10B includes the above-described organic EL element 10 and the organic EL element 1 concerned.
A transparent or semi-transparent switch unit 60A for 0, and the switch unit 60A is a thin-film-shaped lower electrode layer 71 printed by screen printing on the second electrode layer 41 of the organic EL element 10; A transparent or semitransparent synthetic resin film 95 provided so as to be separated from the lower electrode layer 71 via a spacer 81, and the lower electrode layer 7 formed on the inner surface of the synthetic resin film 95 by screen printing.
1. A thin film-shaped upper electrode layer 9 printed so as to face 1
1, and is configured to control the power supply to the organic EL element 10 by contacting and separating the lower electrode layer 71 and the upper electrode layer 91. The lower electrode layer 71 and the upper electrode layer 91 are made of a transparent or semitransparent conductive material.

As shown in FIG. 13, the switch unit 6
In order to protect the upper electrode layer 91 of 0A, a decorative sheet 97 made of a transparent resin may be attached to the upper electrode layer 91. Further, a transparent resin film 98 may be interposed between the second electrode layer 41 of the organic EL element 10 and the lower electrode layer 71 of the switch section 60A.

With this structure, the switch section 60A can be made thin like the organic EL element 10, and as a result, the switch section 60A can be illuminated by the organic EL element 10 while achieving a significant reduction in thickness. .

[0068]

According to the invention of claim 1, since the light emitting layer is formed in a predetermined light emitting pattern shape by the screen printing method and the second electrode layer is formed in a thin film shape by the screen printing method, it is expensive. The light emitting layer and the second electrode layer can be formed using only a relatively inexpensive device for screen printing (plate, printing paste, squeegee, etc.) without using a film forming device such as a vacuum vapor deposition device. Therefore, it can be manufactured with low-priced equipment.

According to the invention of claim 2, the light emitting layer is formed in a thin film shape by a screen printing method, and the second
Since the above electrode layer is formed in a predetermined light emitting pattern shape by the screen printing method, it can be manufactured with a low-cost facility as in the case of the invention of claim 1.

According to the invention of claim 3, the first electrode layer is formed into a predetermined light emitting pattern shape by the screen printing method, and the light emitting layer and the second electrode layer are formed into a thin film shape by the screen printing method. Since it is formed in the same manner as described above, it can be manufactured with low-priced equipment as in the case of the invention according to claim 1 or 2.

Further, according to the invention of claim 4, the first electrode layer is formed into a predetermined light emitting pattern by etching after forming a thin film on the substrate by a screen printing method. Since the light emitting layer and then the second electrode layer are formed in a thin film shape by the screen printing method, the plate can be easily manufactured even if the light emitting pattern has a complicated shape. Therefore, even if the light emitting pattern has a complicated shape, it can be manufactured with low-cost equipment.

Further, according to the invention of claim 5, the conductive film formed on the substrate is subjected to etching treatment to form the first electrode layer into a predetermined light emission pattern shape, and the first electrode layer is formed on the first electrode layer. Since the light emitting layer and then the second electrode layer are formed in a thin film shape by the screen printing method, even if the light emitting pattern has a complicated shape, it can be manufactured with a low-cost facility.

According to the invention of claim 6, the organic EL
A switch part is provided on the substrate of the organic EL device together with the element, and the switch part is a thin film-shaped lower electrode layer printed by a screen printing method on a predetermined region of the substrate, and the lower electrode layer. A synthetic resin film provided so as to be separated via a spacer, and a thin film-shaped upper electrode layer printed on the inner surface of the synthetic resin film by a screen printing method so as to face the lower electrode layer. Therefore, the thickness of the spacer can be made extremely thin. Therefore, the switch portion can be made thin as in the organic EL element, and as a result, a significant reduction in thickness can be achieved.

Further, according to the invention of claim 7, since the lower electrode layer of the switch portion is integrally formed with the first electrode layer of the organic EL element, it is the same as the case of the invention of claim 6. In addition to producing the effect, it is possible to further reduce the cost and the manufacturing time.

According to the eighth aspect of the present invention, the organic EL element is provided, and the transparent or semitransparent switch section for the organic EL element is provided, and the switch section is the organic E element.
A thin-film-shaped lower electrode layer printed by a screen printing method on the second electrode layer of the L element, a synthetic resin film provided so as to be separated from the lower electrode layer via a spacer, and the synthetic resin film. Since the inner surface of the film has a lower electrode layer and a thin film-shaped upper electrode layer printed by screen printing so as to face each other, the switch section can be as thin as an organic EL element, and as a result, it is significantly thin. It is possible to illuminate the switch section with an organic EL element while achieving high efficiency.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a first embodiment of the present invention.

FIG. 2 is also a diagram for explaining positive.

FIG. 3 is also a diagram for explaining another embodiment (1).

FIG. 4 is also a diagram for explaining another embodiment (2).

FIG. 5 is also a diagram for explaining the etching process.

FIG. 6 is likewise a diagram for explaining the etching process.

FIG. 7 is likewise a diagram for explaining the etching process.

FIG. 8 is also a diagram for explaining the etching process.

FIG. 9 is likewise a diagram for explaining the etching process.

FIG. 10 is a diagram for explaining the second embodiment of the present invention.

FIG. 11 is also a diagram for explaining a modified example.

FIG. 12 is also a diagram for explaining a display device in which a switch section is overlaid on an organic EL element.

FIG. 13 is also a diagram for explaining a modified example.

FIG. 14 is likewise a diagram for explaining an application example.

FIG. 15 is a diagram for explaining a conventional configuration of an organic EL element.

[Explanation of symbols]

10 Organic EL element 10A, 10B display device 11 board 21 First electrode layer 31 light emitting layer 41 Second electrode layer 50 Layer to be peeled 60, 60A switch 71 Lower electrode layer 81 Spacer 91 Upper electrode layer 95 Synthetic resin film

Claims (8)

[Claims] 1. Light emission comprising a first electrode layer formed on a substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an organic compound interposed between the two electrode layers. An organic EL device having a layer, wherein the light emitting layer is formed in a predetermined light emitting pattern shape by a screen printing method, and the second electrode layer is formed in a thin film shape by a screen printing method. Organic EL device. 2. Light emission comprising a first electrode layer formed on a substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an organic compound interposed between the two electrode layers. An organic EL device having a layer, wherein the light emitting layer is formed in a thin film shape by a screen printing method, and the second electrode layer is formed in a predetermined light emitting pattern shape by a screen printing method. Organic EL device. 3. Light emission comprising a first electrode layer formed on a substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an organic compound interposed between the two electrode layers. An organic EL device having a layer, wherein the first electrode layer is formed into a predetermined light emitting pattern shape by a screen printing method, and the light emitting layer and the second electrode layer are formed into a thin film shape by a screen printing method. An organic EL device characterized by being formed. 4. A light emission comprising a first electrode layer formed on a substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an organic compound interposed between the two electrode layers. An organic EL element having a layer, wherein the first electrode layer is formed into a predetermined light emission pattern by etching after forming a thin film on the substrate by a screen printing method, and the etching treatment is performed on the substrate. The layer to be peeled is printed by a screen printing method on a portion to be etched of the thin film formed on the substrate, and the layer to be peeled is peeled off from the substrate together with the thin film portion adhered to the layer to be peeled. The organic EL device, wherein the light emitting layer is formed in a thin film shape on the electrode layer by a screen printing method, and the second electrode layer is formed on the light emitting layer in a thin film shape by a screen printing method. element. 5. Light emission comprising a first electrode layer formed on a substrate, a second electrode layer having a polarity opposite to that of the first electrode layer, and an organic compound interposed between the two electrode layers. An organic EL element having a layer, wherein the first electrode layer is formed into a predetermined light emitting pattern shape by etching a conductive film formed on the substrate, and the etching process is performed on the substrate. The layer to be peeled is printed by a screen printing method on a portion to be etched of the conductive film, and the layer to be peeled is peeled off from the substrate together with the conductive film portion adhered to the layer to be peeled. The light emitting layer is formed in a thin film shape on the electrode layer by screen printing, and the second light emitting layer is formed on the light emitting layer.
An organic EL element, wherein the electrode layer is formed in a thin film shape by a screen printing method. 6. The organic EL element according to claim 1 is provided, and a switch section is provided on a substrate of the organic EL element, and the switch section is on a predetermined area of the substrate. Thin film-shaped lower electrode layer printed by screen printing on the above, a synthetic resin film provided so as to be separated from the lower electrode layer via a spacer, and an inner surface of the synthetic resin film by the screen printing method. An organic EL device comprising a lower electrode layer and a thin film-shaped upper electrode layer printed so as to face the lower electrode layer, and by contacting and separating the lower electrode layer and the upper electrode layer.
A display device using an organic EL element configured to control power supply to the element. 7. The display device using an organic EL element according to claim 6, wherein the lower electrode layer of the switch portion is formed by using a part of the first electrode layer of the organic EL element. 8. The organic EL element according to claim 1, further comprising a transparent or semitransparent switch portion for the organic EL element, the switch portion being the organic EL element. A thin film-shaped lower electrode layer printed by a screen printing method on the second electrode layer of the element, a synthetic resin film provided so as to be separated from the lower electrode layer via a spacer, and this synthetic resin film A thin film-shaped upper electrode layer printed so as to face the lower electrode layer by a screen printing method on the inner surface of the substrate, and controlling the power supply to the organic EL element by contacting and separating the lower electrode layer and the upper electrode layer A display device using an organic EL element configured as described above.