JP2017098006A - Organic EL panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance as a transmission type light-emitting panel.SOLUTION: An organic EL panel 100 includes: a transmissive light-emitting portion 10 including a light-emitting portion 10a formed by laminating a first electrode 12, an organic layer 14 at least including a light-emitting layer, and a non-transmissive second electrode 15 on a support substrate 11, and a transmissive portion 10b where a first opening 15a is formed in the second electrode 15; a non-transmissive first lead portion 16 formed on the support substrate 11 and connected to the first electrode 12; and a non-transmissive second lead portion 17 formed on the support substrate 11 and connected to the second electrode 15. A second opening 16c is formed to at least one of the first and second lead portions 16, 17. The aperture ratio of the at least one of the first and second lead portions 16, 17 with the second opening 16c formed thereto is equal to or more than the aperture ratio of the transmissive light-emitting portion 10.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an organic EL (Electro-Luminescence) panel.

  Conventionally, an organic EL element known as a self-luminous element formed of an organic material is made of, for example, an anode made of ITO (Indium Tin Oxide), an organic layer having at least an organic light emitting layer, aluminum (Al), or the like. A non-translucent cathode is sequentially laminated (see, for example, Patent Document 1).

  Such an organic EL element emits light by injecting holes from the anode and injecting electrons from the cathode and recombining the holes and electrons in the organic light emitting layer. In addition to being employed in displays, organic EL elements have also been developed as surface-emitting lighting in recent years.

JP 59-194393 A JP 2011-249541 A

  As an organic EL panel, for example, a transmissive single-sided light-emitting panel disclosed in Patent Document 2 is known. Such a transmissive single-sided light-emitting panel includes a transmissive light-emitting region having a light-emitting portion that emits light and a light-transmissive portion that transmits light. The light-emitting portion includes a light-emitting portion and a light-shielding layer. Is emitted from one surface side, and the light directed to the other surface side is shielded by the light shielding layer. From one surface side, when the light-emitting panel is not lit, the background can be visually recognized through the light transmission part, and when the light-emitting panel is lit, the light from the light emitting part is used. The background cannot be visually recognized (it is difficult to visually recognize). On the other hand, from the other surface side, the background can be visually recognized through the light transmission portion regardless of whether the light emitting panel is turned on or off. Such a transmissive single-sided light emitting panel can be used in various ways such as a transmissive display, building lighting, or a reading lamp.

  By the way, the organic EL panel is provided with a lead portion for connecting the anode and the cathode and an external power source on the outer peripheral portion thereof. In general, the lead portion is composed of a laminate of a transparent conductive layer such as ITO similar to the transparent electrode (anode) and a non-light-transmitting and low-resistance metal layer in order to reduce wiring resistance. . That is, the lead portion becomes a non-translucent region. However, when the non-translucent lead portion is provided in the transmissive single-sided light emitting panel, there is a problem that the lead portion is conspicuous and the appearance is impaired.

  Therefore, the present invention has been made in view of this problem, and an object thereof is to provide an organic EL panel capable of improving the appearance as a transmissive light-emitting panel.

In order to solve the above-described problem, the organic EL panel of the present invention includes a light-emitting portion formed by laminating a transparent electrode, an organic layer including at least a light-emitting layer, and a non-translucent back electrode on a support substrate, A transmissive light-emitting portion having a transmissive portion in which a first opening is formed in a back electrode; a non-translucent first lead portion formed on the support substrate and connected to the transparent electrode; and the support substrate A non-translucent second lead portion formed on and connected to the back electrode, and an organic EL panel comprising:
A second opening is formed in at least one of the first and second lead portions;
An aperture ratio of the first and second lead portions in which the second opening is formed is equal to or higher than an aperture ratio of the transmissive light emitting portion.

  According to the present invention, it is possible to improve the appearance as a transmissive light emitting panel.

The rear view which shows the organic electroluminescent panel which is embodiment of this invention. The AA sectional view taken on the line of the organic electroluminescent panel shown in FIG. The enlarged view of the part B of the organic electroluminescent panel shown in FIG. (A) CC sectional view taken on the line of the organic electroluminescent panel shown in FIG. 3, (b) DD sectional view taken on the line. The figure of the table | surface which shows the luminance uniformity and appearance evaluation of the organic electroluminescent panel depending on the aperture ratio of a 1st, 2nd lead part. The figure which shows the modification of a 2nd opening part. The figure which shows the modification of an organic electroluminescent panel.

  Embodiments to which the present invention is applied will be described below with reference to the accompanying drawings.

  FIG. 1 is a rear view showing an organic EL panel 100 according to the present embodiment. In FIG. 1, the arrangement location of the sealing substrate 18 is indicated by a dotted line. FIG. 2 is a cross-sectional view of the organic EL panel 100 shown in FIG. FIG. 3 is an enlarged view of a portion B of the organic EL panel 100 shown in FIG. 4 is a cross-sectional view of the organic EL panel 100 shown in FIG. 3, (a) is a cross-sectional view taken along the line CC, and (b) is a cross-sectional view taken along the line DD. 2 and 4, the lower side is described as “front” and the upper side is described as “rear”.

  As shown in FIGS. 1 and 2, the organic EL panel 100 includes a support substrate 11, a first electrode 12 that is a transparent electrode, an insulating film 13, an organic layer 14, and a second electrode 15 that is a back electrode. The first lead portion 16, the second lead portion 17, and the sealing substrate 18 are mainly configured. The substantially rectangular region in which the first electrode 12, the organic layer 14, and the second electrode 15 are stacked constitutes a transmissive light emitting portion (organic EL element) 10 having a light emitting portion and a transmissive portion described later.

  The support substrate 11 is a rectangular substrate made of translucent non-alkali glass, for example. Other glass substrates such as alkali glass may be used, and the glass thickness is not particularly limited. A transparent resin substrate may be used. On the back surface (rear surface) of the support substrate 11, the first electrode 12, the first lead portion 16, and the second lead portion 17 are formed, and the insulating film 13, the organic layer 14, and the second electrode 15 are sequentially stacked. Is done. The first lead portion 16 is connected to the first electrode 12, and the second lead portion 17 is connected to the second electrode 15.

In the present embodiment, the first electrode 12 serves as an anode for injecting holes, and a transparent conductive material such as ITO or AZO (Aluminum Zinc Oxide) is formed on the support substrate 11 by means of a sputtering method or the like. The transparent electrode is formed into a layer with a film thickness of and patterned into a predetermined shape by means such as photolithography. The first electrode 12 is formed in the same process using the same transparent conductive material as the first transparent conductive layer 16a of the first lead part 16 and the second transparent conductive layer 17a of the second lead part 17, and is formed in the same process. By being formed integrally with the layer 16a, the first lead portion 16 is electrically connected. Moreover, the surface of the first electrode 12, the first transparent conductive layer 16a, and the second transparent conductive layer 17a is subjected to surface treatment such as UV / O ₃ treatment or plasma treatment.

  The insulating film 13 is a peripheral region of the transmissive light emitting unit 10 including an edge (outer region) of the first electrode 12, a boundary region between the first electrode 12 and the first transparent conductive layer 16a, and an inner region of the second transparent conductive layer 17a. For example, a polyimide-based or phenol-based insulating material is formed in a layer shape with a film thickness of about 1.0 μm by means such as a spin coat method, and is patterned into a desired shape by a photolithography method. The insulating film 13 exposes the central region of the first electrode 12 in a substantially rectangular shape in plan view and partially exposes the opening 13a that defines the shape of the transmissive light emitting unit 10 and the inner region of the second transparent conductive layer 17a. The second electrode 15 can be brought into contact with the second transparent conductive layer 17a, and a slit-shaped contact hole portion 13b for electrically connecting the second electrode 15 and the second electrode wiring portion 17 is provided. In addition, the contact hole part 13b may be one in which, for example, holes formed in a rectangular shape are arranged in a plurality of lines. The insulating film 13 may also be formed in the transmissive light emitting unit 10 to adjust the shape and size of the light emitting unit.

  The organic layer 14 is composed of a single layer or multiple layers including at least a light emitting layer made of an organic material, and is formed on the first electrode 12 with a film thickness of, for example, about 60 to 150 nm. As an example of the multilayer structure, a hole injection layer, a hole transport layer, a first light-emitting layer, a second light-emitting layer, and an electron transport layer are stacked in this order from the first electrode 12 side. Note that the light emitting layer may be a single layer, another layer may be added thereto, or a part of the layers may not be included. An electron injection layer made of lithium fluoride (LiF) may be further formed on the electron transport layer. The organic layer 14 is formed by a vacuum deposition method, and is formed in a desired shape on the back side of the support substrate 11 through a deposition mask having a predetermined opening. The organic layer 14 covers the first electrode 12 and is not seen in contact with the second transparent conductive layer 17a via the contact hole portion 13b, so that the end thereof is positioned on the center side of the contact hole portion 13b in plan view. It is formed in a substantially rectangular shape (see FIG. 2).

  In the present embodiment, the second electrode 15 serves as a cathode for injecting electrons. On the organic layer 14, for example, Al, magnesium (Mg), cobalt (Co), Li, gold (Au), copper (Cu). , A back electrode made of a conductive film in which a non-transparent low-resistance conductive material such as zinc (Zn) is formed in a layer thickness of 50 to 200 nm. The second electrode 15 is formed by a vacuum deposition method, and is formed in a desired shape on the back side of the support substrate 11 through a deposition mask having a predetermined opening. The second electrode 15 is formed so as to cover the first electrode 12 and to be in contact with the second transparent conductive layer 17a through the contact hole portion 13b so that the end thereof overlaps the inner region of the second transparent conductive layer 17a. (See FIG. 2). Further, as shown in FIGS. 3 and 4A, the second electrode 15 has a plurality of first openings 15a formed at a predetermined size and interval at least in a portion corresponding to the transmissive light emitting unit 10, Locations where the two electrodes 15 are formed and locations where the second electrode 15 is not formed (first opening 15a) are alternately arranged. The portion of the second electrode 15 that faces the transmissive light emitting unit 10 is formed in a lattice shape, and a plurality of locations where the second electrode 15 is formed and a plurality of first openings 15a where the second electrode 15 is not formed are alternately arranged. You may be made to do. That is, the shape of the first opening 15a is arbitrary and is not limited to the present embodiment. The size and interval of the first opening 15a are appropriately determined according to the transmittance of the transmissive light emitting unit 10. That is, the larger the size of the first opening 15a and / or the smaller the interval, the higher the aperture ratio of the transmissive light emitting unit 10 (total area of the first opening 15a / total area of the transmissive light emitting unit 10). As the transmittance of the portion 10 increases and the size of the first opening 15a is smaller and / or the interval is larger, the aperture ratio of the transmissive light emitting portion 10 becomes lower and the transmittance of the transmissive light emitting portion 10 becomes lower.

  The first lead portion 16 is an anode wiring portion for connecting the first electrode 12 and an external power source (not shown), and the first transparent conductive layer 16a and the first metal layer 16b are arranged on the support substrate 11 in this order. It consists of a laminated body having a laminated structure. As described above, the first transparent conductive layer 16a is formed of the same transparent conductive material as the first electrode 12 and the second transparent conductive layer 17a and in the same process. The first metal layer 16b is made of at least the first transparent conductive layer 16a such as Al, molybdenum (Mo), titanium (Ti), silver (Ag), copper (Cu), chromium (Cr), nickel (Ni). Also, it is made of a non-transparent metal material having a low resistance or an alloy thereof, and is formed into a single layer or a laminated layer of about 100 to 500 nm by a sputtering method or the like. Due to the first metal layer 16b, the first lead portion 16 becomes non-translucent. The first lead portion 16 is electrically connected to the first electrode 12 by forming the first transparent conductive layer 16 a integrally with the first electrode 12. The first lead portion 16 is formed in a substantially rectangular shape in plan view along the upper end portion (upper side) of the support substrate 11 in a substantially rectangular shape in plan view. Further, as shown in FIGS. 3 and 4B, in the first lead portion 16, a plurality of second openings 16c are formed at a predetermined size and interval in the first metal layer 16b by a photolithography method or the like. The locations where the first metal layer 16b is formed and the locations where the first metal layer 16b is not formed (second opening 16c) are alternately arranged. In the present embodiment, the second opening portion 16 c is formed in a rectangular shape extending in the short direction of the first lead portion 16. The first metal layer 16b is formed in a lattice shape, and a plurality of locations where the first metal layer 16b is formed and a plurality of second openings 16c where the first metal layer 16b is not formed are alternately arranged. Good. That is, the shape of the second opening 16c is arbitrary and is not limited to the present embodiment. The size and interval of the second opening 16c is such that the opening ratio of the first lead portion 16 (total area of the second opening portion 16c / total area of the first lead portion 16) is equal to or greater than the opening ratio of the transmissive light emitting unit 10. As appropriate.

  The second lead portion 17 is a cathode wiring portion that connects the second electrode 15 and the external power source, and has a structure in which the second transparent conductive layer 17a and the second metal layer 17b are laminated on the support substrate 11 in this order. It consists of a laminated body which has. As described above, the second transparent conductive layer 17a is formed of the same transparent conductive material and the same process as the first electrode 12 and the first transparent conductive layer 16a. The second metal layer 17b is similar to the first metal layer 16b, for example, Al, molybdenum (Mo), titanium (Ti), silver (Ag), copper (Cu), chromium (Cr), nickel (Ni), etc. These are made of a non-translucent metal material or an alloy thereof having a resistance lower than that of at least the second transparent conductive layer 17a, and are formed into a single layer or a laminated layer of about 100 to 500 nm by a sputtering method or the like. The first metal layer 16b and the second metal layer 17b are formed of the same metal material and in the same process. Due to the second metal layer 17b, the second lead portion 17 becomes non-translucent. The second lead portion 17 is in contact with the second electrode 15 through a contact hole portion 13b formed at a location where the second transparent conductive layer 17a overlaps the inner region of the second transparent conductive layer 17a of the insulating film 13. It is electrically connected to the second electrode 15. The second lead portion 17 is formed in a substantially rectangular shape in plan view along the lower end portion (lower side) of the support substrate 11. Further, although not shown in the drawing, the second lead portion 17 has a plurality of second openings at predetermined sizes and intervals in the second metal layer 17b by photolithography or the like in the same manner as the first lead portion 16. The portions where the second metal layer 17b is formed and the portions where the second metal layer 17b is not formed (second opening) are alternately arranged. The reason for determining the operation and effect of providing the second opening 16c in the first lead portion 16 and the second lead portion 17 and the opening ratio of the first lead portion 16 and the second lead portion 17 as described above will be described later. In

  The sealing substrate 18 is made of, for example, a glass material, and is formed in a concave shape by an appropriate method such as molding, sandblasting, cutting, or etching. The sealing substrate 18 is hermetically disposed on the support substrate 11 via the adhesive 18a, and the transmissive light emitting unit 10 is sealed. The sealing substrate 18 may have a flat plate shape. In this case, the sealing substrate 18 is bonded onto the support substrate 11 via a spacer. A hygroscopic agent 18 b is disposed on the surface of the sealing substrate 18 facing the transmissive light emitting unit 10. Note that the sealing space formed by the support substrate 11 and the sealing substrate 18 may be filled with an inert liquid such as silicon oil.

  The adhesive 18a is made of, for example, an ultraviolet curable epoxy resin. The adhesive 18 a air-tightly arranges the sealing substrate 18 on the support substrate 11.

  The moisture absorbent 18b is a moisture absorbent made of, for example, strontium oxide (SrO), calcium oxide (CaO), barium oxide (BaO), or the like, and adsorbs moisture in the sealed space. In the present embodiment, the hygroscopic agent 18b is transparent. An example of the transparent hygroscopic agent is OleDry manufactured by Futaba Electronics. The hygroscopic agent 18b may be contained in an inert liquid.

As described above, the organic EL panel 100 is configured.
In the transmissive light emitting unit 10, the portion where the second electrode 15 is formed becomes a plurality of light emitting units 10 a in which the organic layer 14 is sandwiched between the first electrode 12 and the second electrode 15. When a voltage is applied between the electrodes 12 and 15 via the first lead portion 16 and the second lead portion 17, light is emitted from the organic layer 14 (the light emitting layer) in the light emitting portion 10a. As shown in FIG. 4A, the light L1 emitted from the light emitting unit 10a is emitted from the front side of the support substrate 11 to the outside, and is reflected by the second electrode 15 from the back side of the sealing member 18. It is hardly emitted to the outside. Further, in the transmissive light emitting unit 10, the portion where the first opening 15 a is formed in the second electrode 15 becomes a plurality of transmissive portions 10 b. The transmission part 10b transmits the light L2 from the back side of the organic EL panel 100 or the light L3 from the front side. That is, the organic EL panel 100 is a so-called transmissive (see-through) single-sided organic EL panel that mainly emits light L1 from the front side and transmits light L2 and L3 from the outside. In addition, as shown in FIG. 4B, in the first lead portion 16 (the same applies to the second lead portion 17), the second opening portion 16c of the first metal layer 16b extends from the back side of the organic EL panel 100. Light L2 or light L3 from the front side is transmitted. That is, the organic EL panel 100 can transmit light L2 and L3 from the outside also from the first and second lead portions 16 and 17 by providing the second opening portion 16c.

  Next, a method of using the organic EL panel 100 having such a configuration will be described.

(First case)
When the organic EL panel 100 is turned on, the transmissive light emitting unit 10 appears to emit light from the front side of the organic EL panel 100 and includes the first and second lead parts 16 and 17 from the back side of the organic EL panel 100. It appears to pass through the organic EL panel 100.

(Second case)
When the organic EL panel 100 is not turned on, the organic EL panel 100 including the first and second lead portions 16 and 17 appears to be transmitted from the front side of the organic EL panel 100, and from the back side of the organic EL panel 100. The first and second lead portions 16 and 17 are also seen through the organic EL panel 100.

Next, in order to find a suitable value for the first and second lead portions 16 and 17, the inventor of the present application created a prototype and performed luminance uniformity evaluation and panel appearance evaluation. In FIG. 5, the organic EL panel 100 has an outer shape of 37 × 210 mm, the transmission light emitting unit 10 has an area of 4848 mm ² (the light emitting unit 10a has an area of 30%), and a diffusion sheet is provided on the front surface of the support substrate 11 to transmit light. A result of evaluating the luminance uniformity of the organic EL panel 100 by measuring the aperture ratio of the first and second lead portions 16 and 17 while keeping the aperture ratio of the portion 10 constant at 70%; It represents the result of visual evaluation of appearance. The shape of the second opening 16c was a rectangular shape extending in the short direction of the first and second lead portions 16 and 17, as shown in FIG. DC (direct current) 5V was applied for light emission of the organic EL panel 100, and SR-3 (measurement distance = 500 mm, field of view 1 °) manufactured by Topcon was used for luminance measurement. The luminance uniformity in FIG. 5 indicates the value (%) of the luminance (minimum luminance) at the lowest luminance portion where the luminance (maximum luminance) at the highest luminance portion of the transmissive light emitting unit 10 is 100%. ing. In addition, each symbol in the “look” evaluation column in FIG. 5 has the following meaning.

A: The first and second lead parts 16 and 17 are not conspicuous. Δ: The presence of the first and second lead parts 16 and 17 is worrisome. X: The first and second lead parts 16 and 17 are not transparent.

In FIG. 5, when the aperture ratios of the first and second lead parts 16 and 17 are 30% and 50%, which are lower than the aperture ratio (70%) of the transmissive light emitting unit 10, the luminance uniformity is as high as 95%. The first and second lead portions 16 and 17 were not transparent, or the presence thereof was conspicuous, and a sufficient effect was not obtained in terms of appearance. On the other hand, when the aperture ratios of the first and second lead portions 16 and 17 are 70%, 80%, and 90%, which are equal to or higher than the aperture ratio of the transmissive light emitting unit 10, the first and second in terms of appearance. The lead portions 16 and 17 were not conspicuous, and a sufficient effect was obtained. On the other hand, as the aperture ratio of the first and second lead portions 16 and 17 increases, the wiring resistance of the first and second lead portions 16 and 17 increases, and the luminance uniformity decreases to 95%, 90%, and 75%. (Voltage drops and luminance decreases at locations away from the first and second lead portions 16 and 17 serving as power feeding portions). Further, when the opening ratio of the first and second lead portions 16 and 17 is 90%, the first and second lead portions 16 and 17 are partially disconnected from the first and second metal layers 16b and 17b. Occurred.
Based on these evaluation results, the inventor of the present application indicates that in terms of appearance, the aperture ratio of the first and second lead portions 16 and 17 is preferably “more than the aperture ratio of the transmissive light emitting portion 10”. I found it. In view of luminance uniformity, “less than 90%” is more desirable.

The organic EL panel 100 according to the present embodiment includes a light emitting unit 10a formed by laminating a first electrode 12, an organic layer 14 including at least a light emitting layer, and a non-light transmissive second electrode 15 on a support substrate 11, and A transmissive light emitting part 10 having a transmissive part 10 b in which a first opening 15 a is formed in the two electrodes 15, and a non-translucent first lead part formed on the support substrate 11 and connected to the first electrode 12. 16 and a non-translucent second lead portion 17 formed on the support substrate 11 and connected to the second electrode 12,
A second opening 16c is formed in at least one of the first and second lead parts 16 and 17,
The aperture ratio of the first and second lead portions 16 and 17 in which the second opening portion 16 c is formed is equal to or higher than the aperture ratio of the transmissive light emitting unit 10.
According to this, the 1st, 2nd lead parts 16 and 17 do not stand out, and the appearance as a transmissive | pervious light emission panel can be improved.

The first and second lead portions 16 and 17 are formed of a laminate of the first and second transparent conductive layers 16a and 17a and the non-transparent first and second metal layers 16b and 17b. The opening 16c is formed in the first and second metal layers 16b and 17b.
According to this, it is possible to increase the aperture ratio while suppressing the occurrence of disconnection in the first and second lead portions 16 and 17.

  The above description exemplifies the present invention, and it is needless to say that various changes and modifications (including deletion of components) are possible without departing from the scope of the invention. FIG. 6 shows a modification of the second opening. The second opening 16 d shown in FIG. 6A is formed in a rectangular shape extending in the longitudinal direction of the first lead portion 16. The second openings 16e shown in FIG. 6B are formed with random shapes and intervals. Thus, the shape of the 2nd opening part of this invention is arbitrary, and is not limited to this embodiment. FIG. 7 shows a modification of the organic EL panel. In the organic EL panel 101 shown in FIG. 7A, first and second lead portions 16 and 17 are arranged side by side on the upper end side of the support substrate 11. In addition, the organic EL panel 102 shown in FIG. 7B is arranged on the upper end side of the support substrate 11 so that the first and second lead portions 16 and 17 are laminated via the insulating film 13 (three-dimensional). wiring). Thus, the arrangement positions of the first and second lead portions of the present invention are arbitrary and are not limited to this embodiment. In addition, when one of the first and second lead portions is hidden by a case or the like, the second opening may be provided only on one side where the first and second lead portions are exposed. That is, the second opening of the present invention is provided in at least one of the first and second lead portions. In the present invention, the first electrode 12 may be a cathode and the second electrode 15 may be an anode. The present invention is also applicable to a so-called top emission type organic EL panel that emits light from the sealing substrate 18 side. Further, in the present invention, the light emitting portion may be in a segment shape indicating predetermined information such as numerals, characters or symbols. Moreover, the use of the organic EL panel of the present invention is not limited, but is particularly suitable for an application where it is necessary to visually recognize the background through the own device. As this type of application, a display on a dashboard of a vehicle, a display device or a lighting device that is installed in a light-transmitting plate-like member (such as an automatic door or window) can be considered.

  The present invention is suitable for a transmissive organic EL panel.

DESCRIPTION OF SYMBOLS 100, 101, 102 Organic EL panel 10 Transmission light emission part 10a Light emission part 10b Transmission part 11 Support substrate 12 1st electrode 13 Insulating film 14 Organic layer 15 2nd electrode 15a 1st opening part 16 1st lead part 16a 1st transparent conductive Layer 16b First metal layer 16c, 16d, 16e Second opening 17 Second lead portion 17a Second transparent conductive layer 17b Second metal layer 18 Sealing substrate L1-L3 Light

Claims (2)

A light-emitting portion in which a transparent electrode, an organic layer including at least a light-emitting layer, and a non-translucent back electrode are stacked on a support substrate; and a transmission portion in which a first opening is formed in the back electrode. A translucent light emitting portion; a non-transparent first lead portion formed on the support substrate and connected to the transparent electrode; and a non-translucent first portion formed on the support substrate and connected to the back electrode. An organic EL panel comprising two lead parts,
A second opening is formed in at least one of the first and second lead portions;
The organic EL panel according to claim 1, wherein an aperture ratio of the first and second lead portions in which the second opening is formed is equal to or higher than an aperture ratio of the transmissive light emitting portion.   The said 1st, 2nd lead part consists of a laminated body of a transparent conductive layer and a non-light-transmissive metal layer, The said 2nd opening part is formed in the said metal layer, It is characterized by the above-mentioned. 1. The organic EL panel according to 1.

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