JP2009094003A - Luminescent organic el display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminescent organic EL display panel capable of suppressing by a pattern layer the influence of colors over a luminescent layer, the influence at the side opposite to a light taking-out side, and a degradation in contrast of the pattern layer at each of the light taking-out sides, when an optically transmissive pattern layer or a transmissive film with the pattern layer disposed on one face of it is provided on the surface at both of the light taking-out sides, in the luminescent organic EL display panel with both sides of a main body of the transmissive luminescent organic EL display device as the light taking-out sides. <P>SOLUTION: Pattern portions are disposed at both sides of the main body in the transmissive luminescent organic EL display device. At least one or more set of constitution are disposed as including a light-shielding layer exposing a luminescent region and shielding a non-luminescent region, a discoidal polarizing plate covering all the surfaces of the luminescent portion and the non-luminescent portion, and a semi-transmissive and semi-reflecting layer covering all the surfaces of the luminscent region and the non-luminescent region, in this order towards the outside in between the luminescent portion and the pattern portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light-emitting organic EL display panel used for POP (Point Of Purchase advertising) or the like.

  In recent years, various types of display panels have been developed along with the reduction in size and size of display devices. As a display panel that stably displays individual characters and designs with high brightness, POP and the like are light-emitting organic types. EL display panels have come to be used in terms of merits such as being a solid element and self-luminous.

A display device used for an organic EL display panel is also called an organic EL display device, and an organic EL element (also referred to as an organic electroluminescence element) using an organic EL layer using an organic compound as a fluorescent material is used as a light emitting element. is there.
In the organic EL element, holes and electrons injected from two opposing electrodes are combined in the light emitting layer, and the fluorescent material in the light emitting layer is excited by the energy to emit light of a color corresponding to the fluorescent material. The device is self-luminous and has high visibility, and since it is a complete solid-state device, it has excellent characteristics such as impact resistance. However, it is particularly bright even at a low voltage of less than 10 V applied. There are advantages such as high light emission efficiency such as realization of light emission, light emission with a simple element structure, high brightness and long life.
In addition, the organic EL element is a laminated structure in which a hole transport layer, a light emitting layer, and an electron injection layer are mainly formed between an anode and a cathode, and each layer can be formed with a thickness of nanometer unit. There is an advantage that it is easy to reduce the thickness and weight.
Furthermore, each of these layers can be manufactured by applying a coating solution in which a polymer material is dissolved, so that it is possible to apply a manufacturing method that applies a printing method to paper or a manufacturing method that applies an ink jet method. There is also.

An organic EL display device as a display device used for the organic EL display panel is usually formed by laminating a first electrode, an organic EL layer, and a second electrode in this order on a base material, and the first A transparent first support is disposed on the outer side of the electrode side, a second support is disposed on the outer side of the second electrode side, and a predetermined one or more of the first electrode and the second electrode are used. The area is made to emit light selectively, and the first support side or the first support side and the second support side is set as a light emission extraction side (also referred to as an observer side).
For example, a bottom emission type area light emitting organic EL having a configuration as shown in FIG. 7 and having the second electrode 25 side as a cathode and the first support 11 side as a light emission extraction side (also referred to as an observer side). A display panel is mentioned.
In FIG. 7, 11 is a first support, 12 is a second support, 20 is a first electrode (in this case, an anode), 25 is a second electrode, 27 is an auxiliary electrode, 30 is an insulating layer, Reference numeral 40 denotes an organic EL layer (also referred to as a light emitting portion), 50 denotes a sealing material, 60 denotes a light emitting region, and 65 denotes a second electrode region.
Note that the EL layer is an electroluminescence layer, and here means a layer configuration of one or more layers for contributing to light emission between electrodes, an organic light emitter layer is essential, and an organic light emitter (organic fluorescent light emission). A second form consisting of an organic light emitter layer, a positive hole transport layer on the anode side, and an electron transport layer on the cathode side. The organic light emitting layer having the properties of the hole transport layer and the electron transport layer on the cathode side are the third embodiment, the organic light emitter layer having the properties of the electron transport layer, and the holes on the anode side. The 4th form which consists of a transport layer is mentioned.
For example, as an area light-emitting organic EL display panel, a pattern in which an insulating layer is patterned and the entire light-emitting area emits light uniformly, or an organic EL is emitted with an active matrix or a passive matrix, and a gray scale using a complex circuit is used. Some types are controlling.
About the type which light-emits uniformly the whole light emission area, Unexamined-Japanese-Patent No. 2004-111158 (patent document 1) and Unexamined-Japanese-Patent No. 2002-231446 (patent document 2) have description.
JP 2004-111158 A JP 2002-231446 A

In an organic EL display device used for such an area light emission type organic EL display panel, for example, as shown in FIG. 7, the second electrode 25 side is used as a cathode and the transparent first support 11 side is extracted. In the case of the bottom emission type, which is the side (also referred to as the observer side), the second electrode (cathode) 25 and the auxiliary electrode 27 that are formed are metal materials having high reflectivity, and thus are reflected outside the formation region. Since there is a large difference in rate, it is easy to visually recognize, and since the color is tinged with a metallic luster color, it is easy to visually recognize compared with the surrounding area where it is not formed. However, since it is slightly tinged with color, there is a problem that it is easier to visually recognize than a region other than the region where the organic EL layer 40 is formed.
For this reason, for example, when an organic EL display device is used as a poster medium by enlarging a selection unit area (also referred to as a pixel) for selecting light emission, the eye catching effect is inferior due to the above-described problems.

For this reason, in the area light emission type organic EL display panel shown in FIG. 7, in order to suppress visual recognition of the second electrode (cathode) 25 and the auxiliary electrode 27, the second electrode (cathode) 25 is made of a transparent conductive metal material. It is also conceivable to make the above.
However, in this embodiment, when the second support 12 opposite to the light emission extraction side (also referred to as the observer side) is formed of a transparent base material, the light emission extraction side (also referred to as the observer side) is used. Has the problem of reduced visibility due to the influence on the opposite side. Furthermore, a transparent film or a transparent film with the pattern layer on one side is provided on the surface of the light emission side (also called the observer side). When it is provided, there is a problem in that the contrast of the pattern layer is lowered due to the influence of the color of the light emitting layer and the influence on the side opposite to the light emitting side (also referred to as the observer side).

As described above, recently, a simple light-emitting organic EL display panel has been used for POP and the like from the viewpoint of solid-state light emission, but a light-emitting organic EL as shown in FIG. A transparent organic EL display panel in which the first support 11, the first electrode 20, the second electrode (cathode) 25, and the second support 12 constituting the display panel are all formed of a transparent material. In other words, when the light-emitting organic EL display device (also referred to as OELD) body is transparent, in particular, in the form in which both sides are both the light emission extraction side (also referred to as the observer side), each light emission extraction side Then, there is a problem of a decrease in visibility due to the influence on the opposite side, and furthermore, when a transparent film with a light-transmitting pattern layer or the pattern layer arranged on one side thereof is disposed on each light emission side surface In Each emission extraction side is affected by the color of the emission layer and the opposite side of the emission extraction side, and the contrast of the pattern layer is lowered, and these measures are required. It was.
The present invention corresponds to this, and a light-transmitting pattern layer or a light-transmitting pattern layer in a light-emitting organic EL display panel in which both sides of a transparent light-emitting organic EL display device (also referred to as OELD) main body are light emission extraction sides. When a transparent film with the pattern layer arranged on one side is provided on both light emission extraction side surfaces, the pattern layer on each emission extraction side is opposite to the influence of the color of the emission layer and the emission extraction side. It is an object of the present invention to provide a light emitting organic EL display panel having a structure capable of suppressing the influence of the side and the decrease in contrast of the picture layer.

The light-emitting organic EL display panel of the present invention includes at least a first support, a first electrode, an organic EL layer, a second electrode, and a second support, which are stacked in this order, and the first electrode. A light-emitting organic EL display panel in which a light-emitting region is opened and a partitioned insulating layer is formed so as to cover a non-light-emitting region between the first electrode and the second electrode, The second support is a transparent substrate, the first electrode and the second electrode are formed of a transparent conductive material, and the first support side and the second support side emit light respectively. A light-transmitting pattern layer or a transparent film with a light-transmitting pattern layer is used as a pattern portion on each light-emitting extraction side. On the light extraction side, between the light emitting part and the picture part, A light-shielding layer that opens the light-emitting region and shields the non-light-emitting region, a light-emitting portion, a circularly polarizing plate that covers the entire surface of the non-light-emitting portion, a light-emitting portion, and a transflective layer that covers the entire surface of the non-light-emitting portion. It is characterized by the above arrangement.
Here, the outer side means the side opposite to the light emitting side, and the inner side means the light emitting side.
The light-emitting organic EL display panel is characterized in that the light shielding layer has the same color as the light emission color of the organic EL layer.
In any one of the above-described light emitting organic EL display panels, the total light transmittance of the transflective layer is 20% using a total light transmittance T (%) defined in JIS K7136. It is characterized by being in the range of ˜80%.
Here, the total light transmittance T (%) is measured with a turbidimeter (NDH2000 Nippon Denshoku Industries Co., Ltd.).

  In any one of the above-described light emitting organic EL display panels, the first support and the second support are flexible plastic base materials.

In addition, any one of the above light-emitting organic EL display panels is a passive matrix type.
Alternatively, any one of the light-emitting organic EL display panels described above, which is an active matrix type.

  In addition, any one of the above-described light-emitting organic EL display panels is an organic light-emitting poster.

  The light-emitting organic EL display panel according to any one of the above, further comprising a color filter layer, wherein a color conversion phosphor layer is provided between the color filter layer and the transparent electrode. It is characterized by comprising.

(Function)
The light-emitting organic EL display panel according to the present invention has such a configuration, so that a light-emitting organic EL display having both sides of a transparent light-emitting organic EL display device (also referred to as OELD) as a light emission side is provided. In the panel, the light emitting organic layer has a structure that can suppress the influence of the color of the light emitting layer on the light emission extraction side, the influence on the opposite side of the light emission extraction side, and the decrease in contrast of the picture layer. An EL display panel can be provided.
Specifically, the first support and the second support are used as transparent base materials, and the first electrode and the second electrode are formed of a transparent conductive material. The body side and the second support side are each a light emission extraction side, and on each light emission extraction side, a transparent film with a light-transmitting pattern layer or a light-transmitting pattern layer is used as a pattern portion, respectively. The light-shielding layer is arranged on the surface of each light emission extraction side, and is arranged on the surface of each light emission extraction side, between the light-emitting portion and the pattern portion, and outwards to open the light-emitting region and shield the non-light-emitting region. This is achieved by arranging at least one or more semi-transparent semi-reflective layers covering the light emitting portion, the entire surface of the non-light emitting portion, the light emitting portion, and the semi-transparent semi-reflective layer covering the entire surface of the non-light emitting portion in this order.
Specifically, by providing a light-shielding layer that opens the light-emitting area and shields the non-light-emitting area, in particular, by providing a light-shielding layer of the same color as the light emission color of the organic EL layer, It is possible to prevent a decrease in the contrast of the picture layer due to the influence from the opposite side or the emission color.
In addition, the provision of the circularly polarizing plate that covers the entire surface of the non-light-emitting portion is effective for enclosing unnecessary reflected light on the light source side and blurring the edge viewing that is unnecessary viewing.
In addition, by providing a transflective layer that covers the entire surface of the light emitting part and the non-light emitting part, the picture layer is not affected by the color inside (also called the lower layer) of the picture layer.
The total light transmittance of the transflective layer is 20% to 80%, preferably 30% to 70%, more preferably 40%, using the total light transmittance T (%) defined in JIS K7136. By being in the range of ˜60%, the visibility at the time of organic EL light emission is improved while achieving the effect of suppressing the visibility of the lower layer.
Then, toward the outside, in the order of the light-shielding layer that opens the light-emitting region and shields the non-light-emitting region, the light-emitting portion, the circularly polarizing plate that covers the entire surface of the non-light-emitting portion, the light-emitting portion, and the semi-transmissive and semi-reflective layer that covers the entire surface of the non-light-emitting portion. By arranging, when one or more of these parts are arranged, the action of each of the parts can be made more effective.

  Further, the first support body and the second support body are flexible plastic base materials, and by adopting the form of the invention of claim 7, the first support body and the second support body can cope with a heat change and an external force. Is wide.

  Moreover, the form which is a passive matrix type and the form which is an active matrix type are mentioned.

  In particular, it is effective in the case of an organic light emitting poster.

  The form provided with the color filter layer is mentioned, The form provided with the color conversion fluorescent substance layer between this color filter layer and the said transparent electrode is mentioned.

  As described above, the present invention is a light-emitting organic EL display panel in which both sides of a transparent light-emitting organic EL display device (also referred to as OELD) are light emission extraction sides, and a picture layer on each light emission extraction side. However, it is possible to provide a light emitting organic EL display panel having a structure capable of suppressing the influence of the color of the light emitting layer, the influence on the side opposite to the light emission extraction side, and the decrease in contrast of the pattern layer.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of a first example of an embodiment of a light-emitting organic EL display panel of the present invention, and FIG. 2 is a schematic of a second example of an embodiment of a light-emitting organic EL display panel of the present invention. FIG. 3 is a schematic sectional view of a third example of the embodiment of the light emitting organic EL display panel of the present invention, and FIG. 4 is a fourth sectional view of the embodiment of the light emitting organic EL display panel of the present invention. FIG. 5A is a cross-sectional view schematically showing a stacked structure of the organic EL display device body of the light-emitting organic EL display panel of the first example shown in FIG. 5 (b) is an enlarged cross-sectional view of the light-emitting portion showing the patterning of the insulating layer in an easy-to-understand manner, and FIGS. 6 (a) to 6 (d) are cross-sectional views schematically showing the laminated structure of the organic EL layer of the light-emitting portion. FIG.
1 to 6, 1 is an organic EL display device body (also referred to as OELD), 2 is a light emitting unit, 3 is a first light emission extraction side, 3a is a second light emission extraction side, and 11T is a (transparent) first element. 1 support, 12T is a (transparent) second support, 13, 13a is a (transparent) substrate, 20T is a (transparent) first electrode (in this case an anode), and 25T is (transparent) ) The second electrode, 27 is an auxiliary electrode, 30 is an insulating layer, 40 is an organic EL layer (also referred to as a light emitting part), 50 is a sealing material, 60 is a light emitting region, 65 is a second electrode region, and 70 and 70a are Light-shielding layer, 75 and 75a are circularly polarizing plates (also simply referred to as polarizing plates), 76 and 76a are semi-transmissive and semi-reflective layers, 77 and 77a are pattern portions, and 80 is an organic EL display device body (also referred to as a display panel body), 81 is a light emitting portion, 82 is a flexible substrate (also referred to as a first support here), 83 is The rear layer, 84 is a first electrode (here, an anode), 85 is an organic EL layer, 85a is an organic light emitting layer, 86 is a second electrode (here, a cathode), 87 is a barrier layer, and 88 is a flexible seal A substrate (also referred to herein as a second support), 89 is an insulating layer (also referred to as an insulating layer portion, here is a photoresist), 89A is an opening, 90 is a sealant, 91 is a hole transport layer, 92 Is an organic light emitter layer, 93 is an electron transport layer, 94 is an organic light emitter layer / hole transport layer, and 95 is an electron transport layer / organic light emitter layer.

First, a first example of an embodiment of a light emitting organic EL display panel according to the present invention will be described with reference to FIG.
In the light emitting organic EL display panel of the first example, at least the first support 11T, the first electrode 20T, the organic EL layer 40, the second electrode 25T, and the second support 12T are stacked in this order. A light-emitting organic EL display panel in which a light-emitting region is opened between the first electrode 20T and the second electrode 25T and a partitioned insulating layer 30 is formed so as to cover the non-light-emitting region. The first support 11T and the second support 12T are used as transparent base materials, and the first electrode 20T and the second electrode 25T are formed of a transparent conductive material.
The first support body 11T side and the second support body 12T side are respectively set as the light emission extraction sides 3 and 3a, and on each light emission extraction side, a transparent film with a light-transmitting pattern layer is formed on the pattern portion 77. , 77a are arranged on the respective light emission extraction sides and on the surface, respectively, and on one light emission extraction side 3, between the light emission part 2 and the pattern part 77, outward, the light emission region is opened and no light emission is performed. A light-shielding layer 70 that shields the region, a circularly polarizing plate 75 that covers the entire surface of the light-emitting portion and the non-light-emitting portion, a transflective layer 76 that covers the entire surface of the light-emitting portion and the non-light-emitting portion are arranged in this order. On the side 3a, between the light emitting portion 2 and the pattern portion 77a, facing outward, a light shielding layer 70a that opens the light emitting region and shields the non-light emitting region, a circularly polarizing plate 75a that covers the entire surface of the light emitting portion and the non-light emitting portion, Transflective layer 7 covering the entire surface of the light emitting part and the non-light emitting part They are arranged in the order of a.
In this example, the first support 11, the first electrode 20, the second electrode (cathode) 25, and the second support 12 included in the light emitting organic EL display panel as shown in FIG. In addition, a transparent light emitting organic EL display device (also referred to as OELD) body 1 having a structure formed of a transparent material can be observed from both sides.
In this manner, in a light emitting organic EL display panel in which both sides of a transparent light emitting organic EL display device (also referred to as OELD) main body 1 are light emission extraction sides 3 and 3a, It is possible to provide a light-emitting organic EL display panel having a structure in which the pattern layer can suppress the influence of the color of the light-emitting layer, the influence on the side opposite to the light emission extraction side, and the decrease in the contrast of the pattern layer. .
As the light shielding layers 70 and 70a, a colored ink film is used, and is arranged by patterning by a printing method or a photolithography method.
As the colored ink, for example, an ink in which pigment particles are dispersed is used.
By providing a light-shielding layer that opens the light-emitting area and shields the non-light-emitting area, and in particular, by providing a light-shielding layer that is the same color as the light emission color of the organic EL layer, It is possible to prevent the contrast of the picture layer from being lowered due to the influence of the light emission color.
As the circularly polarizing plates 75 and 75a, commercially available products are usually used.
Providing a circularly polarizing plate that covers the entire surface of the non-light-emitting portion is effective for enclosing unnecessary reflected light on the light source side and blurring the edge visual recognition that is unnecessary visual recognition.
As the transflective layers 76 and 76a, metal oxynitride films and inorganic films can be applied.
Usually, the oxynitride film is formed by sputtering, vapor deposition, or the like, and the inorganic film is formed by sputtering, vacuum vapor deposition, CVD, sol-gel, or polymer and dispersed by printing or photolithography.
The total light transmittance of the transflective layer is 20% to 80%, preferably 30% to 70%, more preferably 40%, using the total light transmittance T (%) defined in JIS K7136. The range of ˜60% has good visibility at the time of organic EL emission while achieving the effect of suppressing the visibility of the lower layer.
Here, as the pattern portions 77 and 77a, a film base material coated with a pattern layer is used, but the pattern layer may be directly formed by coating.
Here, a transparent protective layer is disposed on the pattern layer.
The support 13 is also made of a transparent material similar to the first support 11T and the second support 12T.

FIG. 5A is a cross-sectional view schematically showing the stacked configuration of the organic EL display device body of the light-emitting organic EL display panel of the first example.
Here, as the first support body 11 and the second support body, a flexible plastic base material is used. However, the present invention is not limited to this.
In the case of a flexible plastic base material, it can cope with a heat change and an external force, and its application is widened.
Further, an enlarged cross-sectional view of the light emitting portion showing the patterning of the insulating layer in an easy-to-understand manner is as shown in FIG.
The patterned insulating layer 30 defines a light emitting region of a predetermined shape, and the non-light emitting region other than the light emitting region or the light emitting region represents, for example, a display pattern composed of characters, figures, symbols, or a combination thereof.
The opening 89A of the insulating layer 89 (corresponding to 30 in FIG. 1) corresponds to a light emitting region, and the other region covered by the insulating layer 30 is a non-light emitting region.
In the first example, the insulating layer 30 is disposed between the first electrode 11 and the organic EL layer 40. However, the patterned insulating layer is disposed between the organic EL layer 40 and the second electrode 12. The form which has arrange | positioned 30 is also mentioned.

Next, other parts will be described with reference to FIG.
(Flexible substrate 82)
A flexible base material 82 shown in FIG. 5 corresponds to the support body 11T shown in FIG. 1, and here, the support body 11T shown in FIG.
The flexible substrate 82 (corresponding to the support 11T shown in FIG. 1) is provided on the surface on the viewer side in the light-emitting organic EL display panel of the first example.
Therefore, this flexible base material 82 has a display pattern (hereinafter referred to as “characters, etc.”) that is displayed as a light-emitting display region or a non-light-emitting region when the organic EL layer 40 emits light. “).” Is transparent so that an observer can easily see.
As the flexible base material 82, a film-like resin base material or a thin glass plate having a thickness of about 100 μm or less and provided with a protective plastic plate or a protective plastic layer is used.
Such a base material is preferably used as a base material for a light-emitting display panel that can be mounted or installed on various objects because it has excellent flexibility and can be rounded or bent.

The resin material for forming the flexible base material 82 is not particularly limited as long as it has sufficient flexibility as a base material for a light-emitting display panel in the state after formation. , Polyethylene, polypropylene, polyvinyl chloride, polyvinyl fluoride, polystyrene, ABS resin, polyamide, polyacetal, polyester, polycarbonate, modified polyphenylene ether, polysulfone, polyarylate, polyetherimide, polyamideimide, polyimide, polyphenylene sulfide, liquid crystal Polyester, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyoxymethylene, polyethersulfone, polyetheretherketone, polyacrylate, acrylonitrile-styrene resin Phenolic resins, urea resins, melamine resins, unsaturated polyester resins, epoxy resins, polyurethane, silicone resin, amorphous polyolefins, and the like.
Other resin materials can be used as long as they satisfy the conditions that can be used for light-emitting display panels, and are copolymerized using two or more types of monomers that are starting materials for the above-described resins. It may be a copolymer obtained.

Of these resinous substrates, those having good solvent resistance and heat resistance, and those having good gas barrier properties such as water vapor and oxygen are more preferred, depending on the application.
In the case of using a resin material having a good gas barrier property, a barrier layer 83 to be described later can be omitted, but in the light emitting display panel of this example, the flexible substrate 2 on which the barrier layer 83 is formed is used. preferable.
A flexible base material is manufactured by extrusion molding etc. so that it may become a film-form base material of thickness 50-200 micrometers.

In addition, a thin glass plate with a thickness of about 100 μm or less provided with a protective plastic plate or a protective plastic layer is excellent in flexibility and can be rounded or bent. Used.
At this time, it is more preferable to use a protective plastic plate or a protective plastic layer having a good gas barrier property.

By setting the thickness of the flexible substrate 82 within the above range, preferable flexibility can be imparted to the light-emitting display panel.
When the obtained light-emitting display panel is installed in a complicated shape or used as a display device of a portable device, the light-emitting display panel can be thinned to 50 μm to 100 μm to 400 μm. It is possible to realize the thinness peculiar to a light emitting display panel for advertising.

(Barrier layer 83)
The barrier layer 83 is a layer that acts to block moisture (water vapor) and oxygen that adversely affect the life and light emitting performance of the organic EL layer 85.
The barrier layer 83 is not an essential layer in the light emitting display panel of the present invention, but is a layer that is preferably formed between the flexible substrate 82 and the first electrode 84 described above.
This barrier layer 83 also needs to be transparent, like the above-described flexible substrate.

As the barrier layer 83, an inorganic oxide thin film is preferably applied.
Examples of the inorganic oxide include silicon oxide, aluminum oxide, titanium oxide, yttrium oxide, germanium oxide, zinc oxide, magnesium oxide, calcium oxide, boron oxide, strontium oxide, barium oxide, lead oxide, zirconium oxide, sodium oxide, Examples thereof include lithium oxide and potassium oxide, and one or more of these can be used.
Among these, silicon oxide, aluminum oxide, or titanium oxide is preferably used. Moreover, silicon nitride can be mentioned as things other than an inorganic oxide.
The thickness of the barrier layer 83 provided in the area light emitting organic EL display panel of this example is preferably 0.01 to 0.5 μm.

The barrier layer 83 is, for example, flexible between the flexible substrate 82 (corresponding to the first support 11T in FIG. 1) and the first electrode 84 (corresponding to the first electrode 20T in FIG. 1). It is formed on the reactive substrate 82 by a physical vapor deposition method such as a reactive sputtering method or a vacuum vapor deposition method.
As a film forming apparatus for the barrier layer 83, a vapor deposition apparatus capable of physical vapor deposition while transporting the above-described film-like flexible substrate 82 by roll-to-roll is used.

(First electrode 84, second electrode 86)
The first electrode 84 and the second electrode 86 shown in FIG. 5 correspond to the first electrode 20T and the second electrode 25T shown in FIG. 1, respectively, and here, the transparent first electrode shown in FIG. Here, the electrode 20T and the second electrode 25T are also referred to as a first electrode 84 and a second electrode 86, respectively.
The first electrode 84 and the second electrode 86 are indispensable layers provided for applying an electric field to the organic EL layer 85 described later.
The electrode provided on the flexible substrate 82 side when viewed from the organic EL layer 85 is referred to as a first electrode 84, and the electrode provided on the flexible sealing substrate 88 side is referred to as a second electrode 86.
Regarding transparency, here, both the first electrode 84 and the second electrode 86 are transparent, as in the case of the flexible substrate 82 and the barrier layer 83 described above.

  Examples of the first electrode 84 and the second electrode 86 include thin film electrode materials such as indium tin oxide (ITO), indium oxide, indium zinc oxide (IZO), gold, and polyaniline. Among these, indium tin oxide (ITO) and indium zinc oxide (IZO), which are transparent oxides, are preferably used.

In addition, although the 1st electrode 84 and the 2nd electrode 86 are made into the anode and the cathode, respectively, it is not limited to this.
Either the first electrode 84 or the second electrode 86 may be an anode or a cathode.
When the anode is used, it is preferably formed of a conductive material having a high work function (for example, indium tin oxide (ITO)) so that holes can be easily injected. When the anode is used, electrons are injected. In order to facilitate, it is preferable to form the conductive material with a small work function (for example, metallic calcium).
The type using a transparent cathode is described in Japanese Patent Application No. 2006-089176.

  The thicknesses of the first electrode 84 and the second electrode 86 are both preferably 0.005 to 0.5 μm, and are usually provided adjacent to the organic EL layer 85 by a sputtering method, a vacuum deposition method, or the like. .

The first electrode 84 and the second electrode 86 may be formed on the entire surface, or may be formed in a pattern so as to correspond to the position where the organic EL layer 85 is formed.
The patterned electrode is formed by etching with a photosensitive resist after being formed on the entire surface.

(Organic EL layer 85)
The organic EL layer 85 illustrated in FIG. 5 corresponds to the organic EL layer 40 illustrated in FIG. 1, and the organic EL layer 40 illustrated in FIG. 1 is also referred to as an organic EL layer 85.
The organic EL layer 85 is an essential layer in the light emitting display panel.
Examples of the configuration of the organic EL layer 85 include various layer configurations as shown in FIGS. 6 (a) to 6 (d).

  The organic EL layer 85 shown in FIG. 6A is an embodiment in which an organic light emitting layer 85a exclusively including an organic light emitting body (also referred to as an organic fluorescent light emitting body) is formed as an organic EL layer 85 between the electrodes. In the organic EL layer 85 shown in FIG. 6B, a hole transport layer 91 made of a hole transport material is formed on the anode side of the organic light emitter layer 92 and an electron transport material is made on the cathode side of the organic light emitter layer 92. The organic EL layer 85 shown in FIG. 6C is formed with an organic light-emitting layer 94 having the properties of a hole transport layer, and the organic light-emitting layer 94 is formed. The organic transport layer 93 is formed on the cathode side of the organic EL layer 85 shown in FIG. 6D, and the organic light emitting layer 95 having the properties of the electron transport layer is formed. In this embodiment, the hole transport layer 91 is formed on the anode side of the layer 95.

Although not shown, the organic EL layer 85 has a stacked structure of a hole transport material / organic light emitter mixed layer formed by mixing at least a hole transport material and an organic light emitter, and an electron transport layer. It may also be a laminated structure of a mixed layer of an organic light emitter / electron transport material formed by mixing at least both an organic light emitter and an electron transport material, and a hole transport layer. .
Furthermore, the organic EL layer 85 may be composed of a mixed layer in which at least three of a hole transport material, an organic light emitter, and an electron transport material are mixed.

For the organic light emitter layer 92 containing an organic light emitter, an azo compound that is generally used as an organic EL layer is used, but an azo compound to which another organic light emitter is added may be used.
Such other organic light emitters include pyrene, anthracene, naphthacene, phenanthrene, coronene, chrysene, fluorene, perylene, perinone, diphenylbutadiene, coumarin, styryl, pyrazine, aminoquinoline, imine, diphenylethylene, merocyanine, quinacridone or rubrene, Or what is normally used as organic light-emitting bodies, such as these derivatives, can be mentioned.
The organic light emitting layer is formed using an organic light emitting layer forming coating solution containing such a compound.

Examples of the material for the hole transporting material layer 91 include phthalocyanine, naphthalocyanine, porphyrin, oxadiazole, triphenylamine, triazole, imidazole, imidazolone, pyrazoline, tetrahydroimidazole, hydrazone, stilbene, butadiene, and derivatives thereof. What is normally used as a hole transport material can be used. Also, commercially available as a composition for forming a hole transport layer, for example, poly (3,4) ethylenedioxythiophene / polystyrene sulfonate (abbreviation PEDOT / PSS, manufactured by Bayer, trade name: Baytron P AI4083, marketed as an aqueous solution. Etc.) can also be used as a material for the hole transport layer.
The hole transport layer 91 is formed using a hole transport layer forming coating solution containing such a compound.

Materials for the electron transport layer 93 include anthraquinodimethane, fluorenylidenemethane, tetracyanoethylene, fluorenone, diphenoquinone oxadiazole, anthrone, thiopyran dioxide, diphenoquinone, benzoquinone, malononitrile, niditrobenzene, nitro. What is normally used as an electron transport material, such as anthraquinone, maleic anhydride or perylene tetracarboxylic acid, or a derivative thereof, can be used.
The electron transport layer 93 is formed using an electron transport layer forming coating solution containing such a compound.

The organic EL layer 85 is formed by, for example, using the organic light-emitting layer forming coating liquid, the hole transporting layer forming coating liquid, and the electron transporting layer forming coating liquid described above in accordance with the lamination mode illustrated in FIG. It is performed by injecting into a predetermined position divided by a partition wall.
Examples of the injection means include a dispenser method of dropping using a dispenser, an ink jet method, a spin coating method, and a printing method.
In this example, it is preferable that the EL layer is formed under a roll-to-roll manufacturing condition by a printing method such as gravure printing, offset / gravure printing, and inkjet printing.
In particular, the method of separately printing by the ink jet printing method is preferably applied because it can be applied without contacting the base material, so that the base material is not damaged, and a plate is not required and the degree of freedom is high.
Productivity can be further improved by forming the organic EL layer 85 by these printing methods.
Each injected coating liquid is subjected to a heat treatment such as a vacuum heat treatment according to a normal means.
The thickness of the organic EL layer 85 composed of each of the above-described lamination modes is preferably in the range of 0.1 to 2.5 μm.

Note that the partition wall (not shown) forms a region divided for each emission color on the plane of the light emitting display panel.
Depending on the configuration of the organic EL layer 85, a hole transport layer forming coating solution, an organic light emitting layer forming coating solution, an electron transport layer forming coating solution, or the like is injected into the region divided by the partition walls. .
As a partition material, various materials conventionally used as a partition material, for example, a photosensitive resin, an active energy ray curable resin, a thermosetting resin, a thermoplastic resin, and the like can be used.
As a partition formation means, it can be formed by means suitable for the partition material employed, and for example, it can be formed by using a thick film printing method or by patterning using a photosensitive resist.

(Sealing agent 90)
The sealing agent 90 is the flexible sealing material described above, and a gap is formed between the light emitting portion (also referred to as an organic EL element) 81 including the organic EL layer 85 and the flexible sealing substrate 88. Is preferably provided for the purpose of preventing the presence of odor and improving the sealing performance.
As the sealant 90, various commonly used ones can be used, but an epoxy resin-based thermosetting adhesive or an acrylic resin-based UV curable adhesive can be preferably used.

  In addition, since the sealing agent 90 has a barrier property depending on the type, one side of the light emitting portion 81 (opposite to the observer side) is provided without providing a plastic sealing base material 88 and a barrier layer 87 described later. ) May be composed only of this sealant.

Even if the sealing agent 90 is directly formed on the entire surface of the light emitting portion (organic EL element) 81, the sealing agent surface is formed on the flexible sealing substrate 88 and then the surface of the sealing agent is formed on the light emitting portion. Alternatively, it may be formed so as to be bonded onto 81.
The sealant is preferably formed as thin as possible within a range in which the gap can be filled, and the thickness and the like are appropriately adjusted.
The curing means differs depending on whether it is a thermosetting type or a UV curable type, and can be cured based on the respective curing conditions.

This sealant 90 is preferably provided on the entire surface of the light emitting portion (organic EL element) 81.
In the case of a conventional frame-like coating applied to a glass substrate, if a force such as bending the panel is applied after the sealing substrate is bonded, the vicinity of the center of the sealing substrate may come into contact with the element. However, such a problem can be suppressed by providing the sealant 90 on the entire surface.
Therefore, the organic EL display obtained by forming the sealant on the entire surface does not have voids inside, so it prevents unnecessary distortion and tension even when it is rolled or bent. Thus, problems such as abnormal contact inside the organic EL element can be suppressed.
Moreover, since the sealing agent itself has a barrier property, by providing the sealing agent over the entire surface to increase the sealing degree, it is possible to further suppress moisture permeability and air permeability and improve the protection of the element. be able to.

(Barrier layer 87)
Although this barrier layer 87 is not an essential layer in the light emitting display panel of this example, as shown in FIG. 5, on the side of the flexible sealing substrate 88 (corresponding to the second support 12T in FIG. 1). It is a layer provided preferably.
The barrier layer 87 is formed between the flexible sealing substrate 88 and the second electrode 86, more specifically, between the flexible sealing substrate 88 and the sealing agent 90 described above. The same effects as the barrier layer 83 described above are exhibited.
Moreover, although it does not specifically limit about the material to be used, The same thing as the above-mentioned barrier layer 83 can be used preferably.

The barrier layer 87 is formed on a flexible sealing substrate 88 described later by a physical vapor deposition method such as a reactive sputtering method or a vacuum vapor deposition method.
As a film forming apparatus for the barrier layer 87, a vapor deposition apparatus capable of physical vapor deposition while transporting a film-like flexible sealing substrate 88 described later by roll-to-roll is used.

(Flexible sealing substrate 88)
The flexible sealing substrate 88 shown in FIG. 5 corresponds to the second support 12T shown in FIG. 1, and the second support 12T shown in FIG. To tell.
The flexible sealing substrate 88 is the above-described flexible sealing material. In the light emitting display panel of the present invention, as shown in FIG. 5, the flexible sealing substrate 88 is provided on the surface opposite to the observer side. Is.
When the light emitting display panel of this example is observed from only one side, the flexible sealing substrate 88 is not required to be transparent, but here it has transparency.

As the flexible sealing substrate 88, a film-shaped resin substrate is used.
A film-like resin base material is excellent in flexibility and can be rolled or bent, and thus is preferably used as a base material for a light-emitting display panel that can be mounted or installed on various objects. Since the forming material and the forming method are the same as those of the flexible base material 82 described above, they are omitted here.
Note that the thickness of the flexible sealing substrate 88 is also preferably 50 to 200 μm, like the above-described flexible substrate 82, and can give preferable flexibility to the light-emitting display panel.

(Insulating layer 89)
An insulating layer 89 illustrated in FIG. 5 corresponds to the insulating layer 30 illustrated in FIG. 1, and the insulating layer 30 illustrated in FIG. 1 is also referred to as an insulating layer 89.
The insulating layer 89 is formed in a pattern having an opening corresponding to a predetermined pattern between the first electrode 84 and the second electrode 86 described above.
The formed insulating layer 89 defines a light emitting display region having a predetermined shape.
The light emitting display area constitutes a display pattern made up of characters, figures, symbols or combinations thereof, or the non-light emitting area other than the light emitting area is made up of characters, figures, symbols or combinations thereof. Configure.

That is, since the insulating layer 89 provided between the two electrodes cuts off the voltage applied between the two electrodes, even if an organic EL element is formed between the two electrodes, the light emission in that region is prevented. Acts as follows.
Therefore, the region where the insulating layer 89 is patterned is a non-light emitting region, and as a result, the light emitting region is defined.
On the other hand, in the light emitting region in which the insulating layer 89 is not formed, since both electrodes are in contact with both sides of the organic EL layer, the organic EL element to which voltage is applied from both electrodes emits light and exerts an appealing effect. Works.

The light emitting region or the non-light emitting region defined by the insulating layer 89 is preferably a display pattern composed of characters, figures, symbols, or a combination thereof.
If an insulating layer is formed so that such a display pattern is displayed, an excellent appeal effect can be given to a specific display pattern made up of characters, figures, symbols, or combinations thereof.

  In addition, a partition wall is formed with dots by a dispenser method, an ink jet method, a spin coating method, a printing method, or the like, in which a coating liquid for forming an organic EL layer, a coating liquid for forming a hole transport layer and a coating liquid for forming an electron transport layer are dropped using a dispenser. By injecting into the predetermined position, multicolor light emission can be performed.

Such an insulating layer 89 may be laminated on the first electrode 84 side or the second electrode 86 side, and is not particularly limited.
Since the resist material used is usually transparent, there is almost no visibility even if it is patterned, and the insulating layer 89 itself does not affect the visibility of the light-emitting display panel.

Hereinafter, a method for forming a display pattern using the insulating layer 89 will be described in detail.
As a material for forming the insulating layer 89, a photosensitive resin composition used as a resist material is preferably used.
The photosensitive resin composition may be a positive photosensitive resin composition or a negative photosensitive resin composition. Examples of the positive photosensitive resin composition include those having a photodegradable and soluble quinonediazide photosensitive resin as a main component.
In addition, as the negative photosensitive resin composition, for example, a photodegradable crosslinked azide photosensitive resin, a photolytic insoluble diazo photosensitive resin, a photodimerization cinnamate photosensitive resin, a photopolymerization type Examples thereof include an unsaturated polyester photosensitive resin, a photopolymerizable acrylate resin, or a cationic polymerization resin.
In these photosensitive resin compositions, a photopolymerization initiator, a sensitizing dye, and the like can be blended as necessary.

The insulating layer 89 is formed in a predetermined pattern by applying the above-described photosensitive resin composition to the entire surface of any electrode, performing pattern exposure, and developing.
Specifically, first, the photosensitive resin composition described above is formed on the entire surface of the electrode by spin coating, and the photosensitive resin composition is exposed with a mask pattern.
Exposure, ultra-high pressure mercury lamp, high pressure mercury lamp, carbon arc, a light source such as a xenon arc or metal halide lamp is used, 0.1~10,000mJ / cm ^2, preferably by ultraviolet irradiation 10~1,000mJ / cm ² Done.

When the positive photosensitive resin composition is used, the exposed portion is solubilized, so that the exposed portion is dissolved and removed by development.
And the part which is not exposed remains as an insulating layer of a predetermined pattern.
On the other hand, when the negative photosensitive resin composition is used, the exposed portion is insolubilized, so that the unexposed portion is dissolved and removed by development.
The exposed portion remains as an insulating layer having a predetermined pattern.
Although the thickness of an insulating layer is arbitrarily adjusted according to the insulation resistance intrinsic | native to resin which comprises the insulating layer, Usually, it exists in the range of 0.5-3.0 micrometers.

The area light emitting organic EL display panel of this example has been described above. However, as long as the object and effect of the present invention are not impaired, a mode in which functional layers other than the above-described layers are provided may be used.
Examples of such a functional layer include a low refractive index layer, a reflective layer, a light absorption layer, and the like used in ordinary organic EL elements or light-emitting display panels.

In the light-emitting organic EL display panel of the present invention, the thickness of the base material and the thickness of the layer described above are adjusted so that the total thickness is 400 μm or less, preferably 200 μm or less, and 50 μm or more. preferable.
The light-emitting organic EL display panel having a thickness within such a range is flexible and can be rounded or bent, and can be installed in a complicated shape when viewed as an electric decoration panel.
When the thickness of the light emitting organic EL display panel exceeds 400 μm, the flexibility may be slightly inferior.
Further, if the thickness of the light emitting organic EL display panel is less than 50 μm, it is easily affected by a decrease in barrier properties and heat and stress during the process.

In the light emitting organic EL display panel of this example, a laminated structure including at least the flexible substrate 82 and the first electrode 20T on one side of the organic EL layer 85, and at least the second electrode 25T on the other side. And the laminated structure made of the flexible sealing material 88 preferably have the same or similar expansion coefficient.
By doing so, even if an external factor such as heating is added during the manufacturing process of the light emitting display panel, adverse effects such as distortion of the light emitting display panel are less likely to appear.
Here, the laminated structure on one side of the organic EL layer 85 and the laminated structure on the other side are added during the manufacturing process by making the number of layers, the material, the thickness, and the like the same or substantially the same. Even if an external factor is added, since the distortion generated on both sides is balanced, adverse effects such as distortion of the obtained light-emitting display panel can be reduced.

Further, in the manufacturing process of the light emitting organic EL display panel, since each layer is formed by a wet method, continuous manufacturing becomes possible, and thus a light emitting display panel that can be supplied to the market at a price setting that is easily accepted by the market can be provided.
For example, the flexible base material 2 and the flexible sealing base material 88 on which the barrier layers 83 and 87 are formed by the continuous vapor deposition method are prepared in advance, and the flexible base material 82 has the first layer on the barrier layer 83 side. One electrode 84 is formed by a sputtering method, an organic EL layer 85 is formed on the first electrode 84 by a printing method, a second electrode 86 is formed on the organic EL layer 85 by a vacuum deposition method, and the second A sealing agent 90 is applied and formed on the electrode 86, and a flexible sealing substrate 88 including a barrier layer 87 is provided on the sealing agent 90.
By adopting such a wet method in many processes, a light emitting display panel can be manufactured by a roll-to-roll continuous manufacturing method with excellent productivity.

Next, a second example of the embodiment of the light emitting organic EL display panel of the present invention will be described with reference to FIG.
The light emitting organic EL display panel of the second example has a structure in which the light shielding layers 70 and 70a are removed and stacked in the light emitting organic EL display panel of the first example.
For this reason, although the effect | action by the light shielding layers 70 and 70a is not acquired compared with a 1st example, both the transparent light emitting type organic electroluminescent display device (it is also called OELD) main body 1 like a 1st example. In a light-emitting organic EL display panel with the light emission extraction side as the light emission extraction side, the effect of the color of the light emitting layer on the light emission extraction side, the influence on the side opposite to the light emission extraction side, and the contrast of the image layer are reduced. It is possible to provide a light emitting organic EL display panel having a structure capable of suppressing the above.
A description of each part is omitted.

Next, the 3rd example of embodiment of the light emission type organic electroluminescence display panel of this invention is demonstrated based on FIG.
The light-emitting organic EL display panel of the third example has a structure in which the light-shielding layer 70a is removed and is laminated in the light-emitting organic EL display panel of the first example, so to speak, the light-emitting organic EL display panel of the first example and the second example. Intermediate.
Although there is no effect due to the presence of the light shielding layer 70a as in the first example, both the sides of the transparent light-emitting organic EL display device (also referred to as OELD) main body 1 emit light as in the first example. In light-emitting organic EL display panels on the extraction side, the effect of the color of the light emitting layer on the light emission extraction side, the influence on the side opposite to the light emission extraction side, and the decrease in contrast of the pattern layer are suppressed. The present invention makes it possible to provide a light-emitting organic EL display panel having a structure that can be used.
A description of each part is omitted.

Next, the 4th example of embodiment of the light emission type organic electroluminescence display panel of this invention is demonstrated based on FIG.
The light-emitting organic EL display panel of the fourth example has a structure in which the light-shielding layers 70 and 70a and the circularly polarizing plates 75 and 75a are eliminated and stacked in the light-emitting organic EL display panel of the first example. 70 and 70a and circular polarizing plates 75 and 75a are not effective, but as in the first example, light is emitted from both sides of the transparent light-emitting organic EL display device (also referred to as OELD) body 1 In light-emitting organic EL display panels on the extraction side, the effect of the color of the light emitting layer on the light emission extraction side, the influence on the side opposite to the light emission extraction side, and the decrease in contrast of the pattern layer are suppressed. The present invention makes it possible to provide a light-emitting organic EL display panel having a structure that can be used.

Each said form is an example and this invention is not limited to this.
A transparent organic EL display device (OELD) similar to those in the first to fourth examples, each having a light-transmitting pattern layer or a transparent film with a light-transmitting pattern layer as a pattern portion, respectively. , In the form of being arranged on the surface, on each light emission take-out side, between the light emitting part and the picture part, respectively, toward the outside, a light shielding layer that opens the light emitting area and shields the non-light emitting area, light emission Part, a circularly polarizing plate that covers the entire surface of the non-light-emitting part, a light-emitting part, and a semi-transmissive semi-reflective layer that covers the entire surface of the non-light-emitting part in this order, It is possible to suppress the influence of the color of the light emitting layer on the picture layer, the influence on the side opposite to the light emission extraction side, and the decrease in the contrast of the picture layer.
Even if other functional layers are added to the first to fourth examples and the above-described embodiments, the present invention is not limited to these as long as the same effects can be obtained.
In these embodiments, the light shielding layer 70 is not on the outer surface of the first support layer 11T, but on the outer surface of the light emitting unit 2, the inner surface of the first support layer 11T, or the outer surface of the first support layer 11T. The configuration in which the light-shielding layer 70a is arranged not on the outer surface of the second support layer 12T but on the outer surface of the light emitting unit 2, on the inner surface of the second support layer 12T, Also, a form arranged on one surface of another transparent substrate outside the second support layer 12T can be mentioned.
Moreover, although the semi-transmissive / semi-reflective layers 76 and 76a are arranged on one surface of the transparent base materials 13 and 13a, they are arranged on the other surface or on the outer surfaces of the circularly polarizing plates 75 and 75a. The form to do is also mentioned.
The present invention is also applicable to POP (Point Of Purchase advertising) in the case of passive matrix type and active matrix type.
Of course, the present invention can also be applied to a light emitting organic EL display panel provided with a color filter layer and a light emitting organic EL display panel provided with a color conversion phosphor layer between the color filter layer and the transparent electrode.

It is a schematic sectional drawing of the 1st example of embodiment of the light emission type organic electroluminescence display panel of this invention. It is a schematic sectional drawing of the 2nd example of embodiment of the light emission type organic electroluminescence display panel of this invention. It is a schematic sectional drawing of the 3rd example of embodiment of the light emission type organic electroluminescence display panel of this invention. It is a schematic sectional drawing of the 4th example of embodiment of the light emission type organic electroluminescence display panel of this invention. FIG. 5A is a cross-sectional view schematically showing a stacked structure of the organic EL display device body of the light-emitting organic EL display panel of the first example shown in FIG. 1, and FIG. It is an expanded sectional view of the light emission part which showed patterning clearly. FIG. 6A to FIG. 6D are cross-sectional views schematically showing the laminated structure of the organic EL layer of the light emitting part. It is a schematic sectional drawing of one example of the conventional area light emission type organic electroluminescence display panel.

Explanation of symbols

1 Organic EL display device body (also called OELD)
2 light emission part 3 1st light emission extraction side 3a 2nd light emission extraction side 11T (transparent) 1st support body 12T (transparent) 2nd support body 13 and 13a (transparent) base material 20T (transparent ) First electrode (here, anode)
25T (transparent) second electrode 27 Auxiliary electrode 30 Insulating layer 40 Organic EL layer (also referred to as light emitting portion)
50 Sealant 60 Light-Emitting Area 65 Second Electrode Area 70, 70a Light-shielding Layer 75, 75a Circular Polarizing Plate (also simply referred to as polarizing plate)
76, 76a Semi-transmissive / semi-reflective layers 77, 77a Pattern portion 80 Organic EL display device body (also referred to as display panel body)
81 Light emitting unit 82 Flexible base material (also referred to as a first support here)
83 Barrier layer 84 1st electrode (here anode)
85 Organic EL layer 85a Organic phosphor layer 86 Second electrode (cathode here)
87 Barrier layer 88 Flexible sealing substrate (also referred to as second support here)
89 Insulating layer (also referred to as insulating layer, here photoresist)
89A Opening 90 Sealant 91 Hole Transport Layer 92 Organic Light Emitter Layer 93 Electron Transport Layer 94 Organic Light Emitter Layer / Hole Transport Layer 95 Electron Transport Layer / Organic Light Emitter Layer

Claims (9)

At least the first support, the first electrode, the organic EL layer, the second electrode, and the second support are stacked in this order, and light is emitted between the first electrode and the second electrode. A light-emitting organic EL display panel in which a region is opened and a partitioned insulating layer is formed so as to cover a non-light-emitting region,
The first support and the second support are used as transparent base materials, and the first electrode and the second electrode are formed of a transparent conductive material. Each support side is a light emission extraction side, and each light emission extraction side has a light-transmitting pattern layer or a transparent film with a light-transmitting pattern layer as a pattern portion. The light-shielding layer, the light-emitting part, and the non-light-emitting part are arranged on the side and on the surface. A light-emitting organic EL display panel comprising at least one or more circularly polarizing plates that cover the entire surface of the light-emitting portion, a light-emitting portion, and a semi-transmissive and semi-reflective layer that covers the entire surface of the non-light-emitting portion.   2. The light emitting organic EL display panel according to claim 1, wherein the light shielding layer has the same color as the light emission color of the organic EL layer.   3. The light-emitting organic EL display panel according to claim 1, wherein a total light transmittance of the transflective layer is a total light transmittance T (%) defined in JIS K7136. A light emitting organic EL display panel characterized by having a range of 20% to 80%.   4. The light-emitting organic EL display panel according to claim 1, wherein the first support and the second support are flexible plastic substrates. 5. A light-emitting organic EL display panel.   The light-emitting organic EL display panel according to claim 1, wherein the light-emitting organic EL display panel is a passive matrix type.   5. The light-emitting organic EL display panel according to claim 1, wherein the light-emitting organic EL display panel is an active matrix type.   The light-emitting organic EL display panel according to any one of claims 1 to 6, wherein the light-emitting organic EL display panel is an organic light-emitting poster.   8. The light emitting organic EL display panel according to claim 1, further comprising a color filter layer.   The light-emitting organic EL display panel according to claim 8, further comprising a color conversion phosphor layer between the color filter layer and the transparent electrode.

Images