JP2016062859A - Organic electroluminescence element, lighting device and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly productive organic electroluminescence element, lighting device and lighting system.SOLUTION: According to an embodiment, an organic electroluminescence element includes a first electrode, a second electrode, an organic luminescent layer and an insulation layer. The first electrode is light permeable. The second electrode is arranged at a distance from the first electrode in a first direction. The second electrode includes a plurality of conductive parts. The plurality of conductive parts extend in a second direction crossing the first direction and are arranged at a distance from each other in a third direction which crosses the first direction and the second direction. The organic luminescent layer is provided between the first electrode and the second electrode. The insulation layer is provided between the first electrode and the organic luminescent layer. The insulation layer includes a plurality of insulating parts. The plurality of insulating parts extend in a fourth direction which is parallel with a plane parallel with the second direction and the third direction and inclines against the second direction, and are arranged at a distance from each other in a fifth direction which is parallel with the plane and crosses the fourth direction.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an organic electroluminescent element, an illumination device, and an illumination system.

  In the organic electroluminescence device, an organic light emitting layer is provided between a first electrode (anode) and a second electrode (cathode). By applying a voltage between these electrodes, light is emitted from the organic light emitting layer. There is an illumination device using an organic electroluminescent element as a light source. There is an illumination system including a plurality of organic electroluminescent elements and a control unit that controls the plurality of organic electroluminescent elements. In the organic electroluminescent element, improvement in productivity is desired.

JP 2011-216317 A

  Embodiments of the present invention provide a highly productive organic electroluminescent device, lighting device, and lighting system.

  According to the embodiment of the present invention, the organic electroluminescent device includes a first electrode, a second electrode, an organic light emitting layer, and an insulating layer. The first electrode is light transmissive. The second electrode is separated from the first electrode in the first direction. The second electrode includes a plurality of conductive parts. The plurality of conductive portions extend in a second direction that intersects the first direction, and are spaced apart in a third direction that intersects the first direction and the second direction. The organic light emitting layer is provided between the first electrode and the second electrode. The insulating layer is provided between the first electrode and the organic light emitting layer. The insulating layer includes a plurality of insulating portions. The plurality of insulating portions extend in a fourth direction that is parallel to the plane parallel to the second direction and the third direction and is inclined with respect to the second direction, and intersects the fourth direction in parallel to the plane. They are lined up apart in the fifth direction.

1 is a schematic plan view illustrating an organic electroluminescent element according to a first embodiment. FIG. 2A and FIG. 2B are schematic cross-sectional views illustrating the organic electroluminescent element according to the first embodiment. 1 is a schematic cross-sectional view illustrating a part of an organic electroluminescent element according to a first embodiment. 4A and 4B are schematic plan views illustrating a part of the organic electroluminescent element. FIG. 5 is a schematic plan view illustrating a part of an organic electroluminescent element according to a second embodiment. FIG. 6 is a schematic plan view illustrating a part of an organic electroluminescent element according to a third embodiment. It is a schematic plan view which illustrates the organic electroluminescent element which concerns on 4th Embodiment. FIG. 6 is a schematic cross-sectional view illustrating an organic electroluminescent element according to a fourth embodiment. FIG. 6 is a schematic plan view illustrating another second electrode according to the embodiment. It is a schematic plan view which illustrates the organic electroluminescent element which concerns on 5th Embodiment. It is typical sectional drawing which illustrates the illuminating device which concerns on 6th Embodiment. FIG. 12A and FIG. 12B are schematic views illustrating the illumination system according to the seventh embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between the parts, and the like are not necessarily the same as actual ones. Further, even when the same part is represented, the dimensions and ratios may be represented differently depending on the drawings.
Note that, in the present specification and each drawing, the same elements as those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

(First embodiment)
FIG. 1 is a schematic plan view illustrating an organic electroluminescent element according to the first embodiment.
FIG. 2A and FIG. 2B are schematic cross-sectional views illustrating the organic electroluminescent element according to the first embodiment.
FIG. 2A is a cross-sectional view taken along line A1-A2 of FIG.
FIG. 2B is a cross-sectional view taken along line B1-B2 of FIG.

  The organic electroluminescent element 110 according to the embodiment includes a stacked body SB. The stacked body SB includes the first electrode 10, the second electrode 20, the organic light emitting layer 30, and the insulating layer 40.

  The first electrode 10 has an upper surface 10a. The first electrode 10 is light transmissive. The first electrode 10 is, for example, a transparent electrode.

  Here, the direction perpendicular to the upper surface 10a is taken as the Z-axis direction. One direction parallel to the upper surface 10a is defined as an X-axis direction. A direction perpendicular to the X-axis direction and the Z-axis direction is taken as a Y-axis direction. The X-axis direction and the Y-axis direction are parallel to the upper surface 10a. The X-axis direction and the Y-axis direction are directions perpendicular to the Z-axis direction. The Z-axis direction corresponds to the thickness direction of the first electrode 10.

  The second electrode 20 has light reflectivity, for example. The light reflectance of the second electrode 20 is higher than the light reflectance of the first electrode 10. In the present specification, the state having a light reflectance higher than the light reflectance of the first electrode 10 is referred to as light reflectivity. The second electrode 20 is separated from the first electrode 10 in the first direction. The second electrode 20 includes a plurality of conductive portions 20a. Each of the plurality of conductive portions 20a extends in the second direction and is spaced apart in the third direction. The second direction intersects the first direction. The third direction intersects the first direction and the second direction. In this example, each of the plurality of conductive portions 20a extends in the Y-axis direction and is spaced apart in the X-axis direction. That is, in this example, the first direction is the Z-axis direction. The second direction is the Y-axis direction. The third direction is the X-axis direction.

  The organic light emitting layer 30 has light transmittance, for example. The organic light emitting layer 30 is transparent, for example. The organic light emitting layer 30 is provided between the first electrode 10 and the second electrode 20.

  The insulating layer 40 has light transparency, for example. The insulating layer 40 is transparent, for example. The insulating layer 40 is provided between the first electrode 10 and the organic light emitting layer 30. The insulating layer 40 includes a plurality of insulating portions 40a. Each of the plurality of insulating portions 40a extends in the fourth direction D4 and is spaced apart in the fifth direction D5. The fourth direction D4 is parallel to a plane (for example, the upper surface 10a) parallel to the X-axis direction and the Y-axis direction. The fourth direction D4 is inclined with respect to the Y-axis direction. The fifth direction D5 is parallel to a plane parallel to the X-axis direction and the Y-axis direction and intersects the fourth direction D4. In this example, the fourth direction D4 and the fifth direction D5 are parallel to the upper surface 10a. The fifth direction D5 is a direction perpendicular to the fourth direction D4.

In the embodiment, when projected onto a plane (XY plane) parallel to the upper surface 10a of the first electrode 10, each of the plurality of insulating portions 40a is disposed obliquely with respect to each of the plurality of conductive portions 20a. Is done. That is, when the angle between the Y-axis direction and the fourth direction D4 is θ ₀ , the angle θ ₀ is in the range of 0 degree <θ ₀ <90 degrees. The angle θ ₀ is more preferably, for example, not less than 5 degrees and not more than 85 degrees.

  Here, as shown in FIGS. 4A and 4B described later, when forming a plurality of conductive portions as the second electrode (cathode), a mask for patterning (hereinafter referred to as a metal mask). Is used. For example, there is a reference example in which a plurality of stripe-shaped conductive portions (second electrodes) are arranged perpendicular to a plurality of stripe-shaped insulating portions (also referred to as partition walls) and formed in a lattice shape. In this case, a long metal mask is used. The metal mask is disposed in a direction perpendicular to each of the plurality of insulating portions. The metal mask is long in the arrangement direction (Y-axis direction) of the plurality of insulating portions and short in the extending direction (X-axis direction) of the plurality of insulating portions. A groove is formed between each of the plurality of insulating portions. For this reason, the metal mask sometimes slid (twisted) in the lateral direction (X-axis direction) at the groove portion. If the metal mask is used, it may come into contact with the organic light emitting layer and reduce the yield.

  In order to suppress a decrease in yield, there is another reference example in which the pitch between the plurality of insulating portions is reduced. According to this another reference example, since the areas of the plurality of insulating portions that do not emit light increase, the light emission area ratio decreases.

  According to the embodiment, each of the plurality of insulating portions 40a is inclined with respect to each of the plurality of conductive portions 20a. That is, when the second electrode 20 is formed, the metal mask is arranged with the plurality of insulating portions 40a inclined with respect to the metal mask. Thereby, the length of the Y-axis direction of the metal mask which does not overlap with the insulating part 40a between the two adjacent insulating parts 40a can be shortened. Thereby, the sway of the metal mask can be reduced. Thereby, the fall of a yield can be suppressed, without making the pitch of a some insulating part small. Thereby, productivity can be made high.

Hereinafter, the structure of the organic electroluminescent device 110 according to the embodiment will be described.
The insulating layer 40 is provided on the upper surface 10 a of the first electrode 10. The insulating layer 40 includes a plurality of insulating portions 40a and a plurality of first openings 40b. Each of the plurality of insulating portions 40a extends in a fourth direction D4 that is parallel to the upper surface 10a, and is spaced apart in a fifth direction D5 that is parallel to the upper surface 10a and intersects the fourth direction D4.

  Each of the plurality of first openings 40b is located between each of the plurality of insulating portions 40a. In this example, each of the plurality of first openings 40b extends in the fourth direction D4 and is spaced apart in the fifth direction D5. Each of the plurality of first openings 40b has, for example, a groove shape. Each of the plurality of first openings 40b exposes a part of the first electrode 10. In this example, a plurality of portions of the first electrode 10 are exposed by each of the plurality of first openings 40b. Hereinafter, a part of the first electrode 10 exposed by the first opening 40b is referred to as an exposed portion 10p.

  The organic light emitting layer 30 is provided on the upper surface 10 a of the first electrode 10. In this example, the organic light emitting layer 30 is provided on the insulating layer 40. That is, the insulating layer 40 is provided between the first electrode 10 and the organic light emitting layer 30. The organic light emitting layer 30 is provided on the entire insulating layer 40, for example. The organic light emitting layer 30 includes a first portion 30a and a second portion 30b. The first portion 30 a is located between each of the plurality of insulating portions 40 a and is provided on each of the plurality of exposed portions 10 p of the first electrode 10. The second portion 30 b is provided on each of the plurality of insulating portions 40 a of the insulating layer 40.

  The first portion 30a includes a first region r1 and a second region r2. The first region r1 overlaps each of the plurality of conductive parts 20a. The second region r2 is located between each of the plurality of conductive portions 20a and does not overlap with each of the plurality of conductive portions 20a. The second portion 30b includes a third region r3 and a fourth region r4. The third region r3 overlaps each of the plurality of conductive parts 20a. The fourth region r4 is located between each of the plurality of conductive portions 20a and does not overlap with each of the plurality of conductive portions 20a.

  The thickness of the organic light emitting layer 30 (the length along the Z-axis direction) is thinner than the thickness of the insulating layer 40 (insulating portion 40a). The distance in the Z-axis direction between the upper surface 30u of the first portion 30a provided on the exposed portion 10p of the organic light emitting layer 30 and the upper surface 10a of the first electrode 10 is the upper surface 40u of the insulating portion 40a of the insulating layer 40. And the distance in the Z-axis direction between the first electrode 10 and the upper surface 10a of the first electrode 10 is shorter. That is, the upper surface 30u is located below the upper surface 40u.

  The second electrode 20 is provided on the organic light emitting layer 30. The second electrode 20 includes a plurality of conductive portions 20a and a plurality of second openings 20b. In this example, each of the plurality of conductive portions 20a extends in the Y-axis direction and is spaced apart in the X-axis direction. Each of the plurality of conductive parts 20a is arranged at a position overlapping with any one of the plurality of exposed parts 10p when projected onto a plane (XY plane) parallel to the upper surface 10a.

  Each of the plurality of second openings 20b is disposed between each of the plurality of conductive portions 20a. Each of the plurality of second openings 20b has a groove shape extending in the Y-axis direction, for example. Each of the plurality of second openings 20b extends in the Y-axis direction and is spaced apart in the X-axis direction. In this example, the second electrode 20 has a stripe shape extending in the Y-axis direction, and the insulating layer 40 has a stripe shape extending in the fourth direction D4 inclined with respect to the Y-axis direction. That is, the insulating layer 40 is disposed to be inclined with respect to the second electrode 20.

  The organic light emitting layer 30 is electrically connected to the first electrode 10 through each of the plurality of first openings 40b. For example, the organic light emitting layer 30 is in contact with each of the plurality of exposed portions 10p of the first electrode 10 via each of the plurality of first openings 40b. Thereby, the organic light emitting layer 30 is electrically connected to the first electrode 10.

  The organic light emitting layer 30 is electrically connected to the second electrode 20. For example, the organic light emitting layer 30 is in contact with each of the plurality of conductive portions 20a. Thereby, the organic light emitting layer 30 is electrically connected to the second electrode 20. Note that in this specification, “electrically connected” includes not only direct contact but also the case where another conductive member or the like is interposed therebetween.

  A current is passed through the organic light emitting layer 30 using the first electrode 10 and the second electrode 20. Thereby, the organic light emitting layer 30 emits light. For example, when an electric current flows, the organic light emitting layer 30 recombines electrons and holes to generate excitons. The organic light emitting layer 30 emits light using, for example, the emission of light when the exciton is radiation deactivated.

  In the organic electroluminescent element 110, a portion between the exposed portion 10p and the conductive portion 20a in the organic light emitting layer 30 is a light emitting area EA. In this example, the organic light emitting layer 30 includes a plurality of light emitting areas EA between each of the plurality of exposed portions 10p and each of the plurality of conductive portions 20a. For example, the insulating layer 40 functions as a contact prevention layer that suppresses contact between a patterning mask (for example, a metal mask) and a portion to be the light emitting area EA of the organic light emitting layer 30 when the second electrode 20 is formed. . By providing the insulating layer 40, for example, the yield of the organic electroluminescent element 110 can be improved.

  The light emitting EL emitted from the light emitting area EA is emitted to the outside of the organic electroluminescent element 110 through the first electrode 10. A part of the light emitting EL is reflected by the second electrode 20 and is emitted to the outside through the organic light emitting layer 30 and the first electrode 10. That is, the organic electroluminescent element 110 is a single-sided light emitting type.

  In the organic electroluminescent element 110, external light OL incident from the outside passes through the first electrode 10, the organic light emitting layer 30, and the insulating layer 40 between the plurality of conductive portions 20a. As described above, the organic electroluminescent element 110 transmits the external light OL incident on the organic electroluminescent element 110 from the outside while emitting the light emission EL. Thus, the organic electroluminescent element 110 has light transmittance. Thereby, in the organic electroluminescent element 110, the background image can be visually recognized through the organic electroluminescent element 110. That is, the organic electroluminescent element 110 is a thin-film or plate-like light source that can be seen through.

  Thus, according to the organic electroluminescent element 110 of the embodiment, a light transmissive organic electroluminescent element can be provided. When the organic electroluminescent element 110 is applied to a lighting device, various new applications are possible due to the function of transmitting a background image in addition to the lighting function.

FIG. 3 is a schematic cross-sectional view illustrating a part of the organic electroluminescent element according to the first embodiment.
As shown in FIG. 3, the organic light emitting layer 30 includes a first layer 31. The organic light emitting layer 30 may further include at least one of the second layer 32 and the third layer 33 as necessary. The first layer 31 emits light including the wavelength of visible light. The second layer 32 is provided between the first layer 31 and the first electrode 10. The third layer 33 is provided between the first layer 31 and the second electrode 20.

The first layer 31 includes, for example, Alq ₃ (tris (8-hydroxyquinolinolato) aluminum), F8BT (poly (9,9-dioctylfluorene-co-benzothiadiazole) and PPV (polyparaphenylene vinylene). A mixed material of a host material and a dopant added to the host material can be used for the first layer 31. As the host material, for example, CBP (4,4′-N , N'-bisdicarbazolyl-biphenyl), BCP (2,9-dimethyl-4,7 diphenyl-1,10-phenanthroline), TPD (4,4'-bis-N-3methylphenyl-N- (Phenylaminobiphenyl), PVK (polyvinylcarbazole), PPT (poly (3-phenylthiophene)), etc. Examples of the dopant material include Fl. pic (iridium (III) bis (4,6-di - fluorophenyl) - pyridinate -N, C2' picolinate), Ir _{(ppy) 3} (tris (2-phenylpyridine) iridium) and Flr6 (bis (2, 4-difluorophenylpyridinato) -tetrakis (1-pyrazolyl) borate-iridium (III)) and the like can be used.

For example, the second layer 32 functions as a hole injection layer. The hole injection layer is made of, for example, at least PEDPOT: PPS (poly (3,4-ethylenedioxythiophene) -poly (styrenesulfonic acid)), CuPc (copper phthalocyanine), and MoO ₃ (molybdenum trioxide). Including either The second layer 32 functions as, for example, a hole transport layer. The hole transport layer may be, for example, α-NPD (4,4′-bis [N- (1-naphthyl) -N-phenylamino] biphenyl), TAPC (1,1-bis [4- [N, N— Di (p-tolyl) amino] phenyl] cyclohexane), m-MTDATA (4,4 ′, 4 ″ -tris [phenyl (m-tolyl) amino] triphenylamine), TPD (bis (3-methylphenyl) -N, N′-diphenylbenzidine) and TCTA (4,4 ′, 4 ″ -tri (N-carbazolyl) triphenylamine), etc. The second layer 32 includes, for example, holes. It may have a laminated structure of a layer functioning as an injection layer and a layer functioning as a hole transport layer, and the second layer 32 functions as a layer functioning as a hole injection layer and a hole transport layer. A layer other than the layer may be included.

The third layer 33 can include, for example, a layer that functions as an electron injection layer. The electron injection layer includes, for example, at least one of lithium fluoride, cesium fluoride, and a lithium quinoline complex. The third layer 33 can include, for example, a layer that functions as an electron transport layer. The electron transport layer may be, for example, Alq ₃ (tris (8 quinolinolato) aluminum (III)), BAlq (bis (2-methyl-8-quinolinato) (p-phenylphenolato) aluminum), Bphen (vasophenanthroline), and 3TPYMB (tris [3- (3-pyridyl) -mesityl] borane) and the like. The third layer 33 may have a stacked structure of, for example, a layer that functions as an electron injection layer and a layer that functions as an electron transport layer. The third layer 33 may include a layer different from the layer functioning as an electron injection layer and the layer functioning as an electron transport layer.

  For example, the light emitted from the organic light emitting layer 30 is substantially white light. That is, the light emitted from the organic electroluminescent element 110 is white light. Here, “white light” is substantially white, and includes, for example, white light such as red, yellow, green, blue, and purple.

  The first electrode 10 includes, for example, an oxide containing at least one element selected from the group consisting of In, Sn, Zn, and Ti. For the first electrode 10, for example, indium oxide, zinc oxide, tin oxide, indium tin oxide (ITO) film, fluorine-doped tin oxide (FTO), or conductive glass containing indium zinc oxide is used. A film (eg, NESA) manufactured by the above, gold, platinum, silver, copper, or the like can be used. The first electrode 10 functions as an anode, for example.

  The second electrode 20 includes, for example, at least one of aluminum and silver. For example, an aluminum film is used for the second electrode 20. Further, an alloy of silver and magnesium may be used as the second electrode 20. Calcium may be added to this alloy. The second electrode 20 functions as, for example, a cathode.

  Alternatively, the first electrode 10 has a laminated structure of a light-reflective electrode and a light-transmissive electrode (for example, a transparent electrode), is patterned in a stripe shape or a lattice shape, and the second electrode 20 is a light-transmissive electrode ( For example, a transparent electrode) may be used. Thereby, the top emission type organic electroluminescent device 110 can be obtained.

  The first electrode 10 serves as a cathode, the second electrode 20 serves as an anode, the second layer 32 functions as an electron injection layer or an electron transport layer, and the third layer 33 functions as a hole injection layer or a hole transport layer. You may let them.

The insulating layer 40 is made of, for example, an insulating resin material such as polyimide resin or acrylic resin, or an insulating material such as a silicon oxide film (for example, SiO ₂ ), a silicon nitride film (for example, SiN), or a silicon oxynitride film. Inorganic materials are used.

  The thickness (length in the Z-axis direction) of the first electrode 10 is, for example, not less than 10 nanometers (nm) and not more than 500 nm. More preferably, it is 50 nm or more and 200 nm or less. The thickness of the insulating part 40a is, for example, 1 micrometer (μm) or more and 100 μm or less. The thickness of the organic light emitting layer 30 is, for example, not less than 50 nm and not more than 500 nm. The thickness of the second electrode 20 (conductive portion 20a) is, for example, not less than 10 nm and not more than 300 nm. The width W1 of the insulating portion 40a is, for example, not less than 1 μm and not more than 1500 μm. A distance Pt1 (hereinafter referred to as a pitch Pt1) between each of the plurality of insulating portions 40a is, for example, not less than 10 μm and not more than 15 mm. More preferably, they are 10 micrometers or more and 7500 micrometers or less. The pitch Pt1 is, for example, the distance between the centers of the two adjacent insulating portions 40a in the fifth direction D5. The width W2 (length in the X-axis direction) of the conductive portion 20a is, for example, not less than 50 μm and not more than 500 μm. More preferably, it is 75 μm or more and 300 μm or less. The aperture ratio indicating the ratio of the area of the portion where the second electrode 20 is not provided to the area of the range where the light emitting region EA is provided is preferably 0.5 or more and 0.9 or less. The aperture ratio is more preferably 0.55 or more and 0.85 or less. A distance Pt2 (hereinafter referred to as pitch Pt2) between each of the plurality of conductive portions 20a is, for example, a distance between the centers of two adjacent conductive portions 20a in the X-axis direction.

  The pattern shape of the second electrode 20 may be, for example, a comb blade shape. That is, the second electrode 20 may include a plurality of conductive portions 20a that extend in the Y-axis direction and are spaced apart in the X-axis direction, and portions that connect the conductive portions 20a.

4A and 4B are schematic plan views illustrating a part of the organic electroluminescent element.
FIG. 4A is a schematic plan view illustrating a part of the organic electroluminescent element according to the reference example.
FIG. 4B is a schematic plan view illustrating a part of the organic electroluminescent element according to the first embodiment.

  As shown in FIG. 4A, in the organic electroluminescent element 199 according to the reference example, a patterning metal mask M <b> 1 is used as the second electrode 20 when the plurality of conductive portions 20 a are formed. The organic electroluminescent light emitting device 199 is formed in a lattice shape in which a plurality of stripe-shaped conductive portions 20a are arranged perpendicular to a plurality of stripe-shaped insulating portions 40a. The metal mask M1 has a long shape. The metal mask M1 is arranged in a direction perpendicular to each of the plurality of insulating portions 40a. The metal mask M1 is long in the arrangement direction (Y-axis direction) of the plurality of insulating portions 40a and short in the extending direction (X-axis direction) of the plurality of insulating portions 40a. A groove is formed between each of the plurality of insulating portions 40a. For this reason, the metal mask M1 is moved (twisted) in the short direction T1 (X-axis direction) at the groove portion. When the metal mask M1 is used, for example, the metal mask M1 may come into contact with the organic light emitting layer 30 to reduce the yield.

In the organic electroluminescent element 110 according to the embodiment, as shown in FIG. 4B, each of the plurality of insulating portions 40a is inclined with respect to each of the plurality of conductive portions 20a. Each of the plurality of insulating portions 40a is disposed obliquely with respect to each of the plurality of conductive portions 20a. That is, when the angle between the Y-axis direction and the fourth direction D4 is θ ₀ , the angle θ ₀ is in the range of 0 degree <θ ₀ <90 degrees. The angle θ ₀ is more preferably, for example, not less than 5 degrees and not more than 85 degrees. Thereby, at the time of formation of the 2nd electrode 20, metal mask M1 is arranged in the state where a plurality of insulating parts 40a inclined with respect to metal mask M1.

  In the case of the organic electroluminescent element 199 of FIG. 4A, the length in the Y-axis direction of the metal mask M1 that does not overlap the insulating portion 40a between two adjacent insulating portions 40a is Wt1. On the other hand, in the case of the organic electroluminescent element 110 in FIG. 4B, the length in the Y-axis direction of the metal mask M1 that does not overlap the insulating portion 40a between the two adjacent insulating portions 40a is Wt2. That is, Wt2 is shorter than Wt1. Thereby, the same effect as reducing the pitch of the plurality of insulating portions 40a can be obtained. Thereby, the sway of the metal mask M1 can be reduced.

As described above, according to the embodiment, since the sway of the metal mask can be reduced, contact between the metal mask and the organic light emitting layer can be suppressed. Thereby, the fall of a yield can be suppressed and productivity can be made high. A highly productive organic electroluminescent device can be provided.
According to the embodiment, the pitch of the plurality of insulating portions is not reduced. For this reason, the light emission area ratio is not reduced. That is, productivity can be increased without reducing the light emitting area ratio.

  As in the embodiment, by arranging the plurality of conductive portions 20a obliquely with respect to the plurality of insulating portions 40a, for example, an effect that blur due to interference (bleeding) is less visible compared to the case where the conductive portions 20a are arranged vertically. Can be obtained.

(Second Embodiment)
FIG. 5 is a schematic plan view illustrating a part of the organic electroluminescent element according to the second embodiment.
FIG. 5 shows a projected image when a part of the organic electroluminescent element according to the second embodiment is projected onto the XY plane.
The organic electroluminescent element 111 according to the embodiment includes a first electrode 10, a second electrode 20, an organic light emitting layer 30, and an insulating layer 40. In this example, illustration of the first electrode 10 and the organic light emitting layer 30 is omitted.

  The second electrode 20 includes, as a plurality of conductive portions 20a, a first conductive portion 20a1 and a second conductive portion 20a2 that is spaced apart from the first conductive portion 20a1. The insulating layer 40 includes a first insulating part 40a1 and a second insulating part 40a2 arranged apart from the first insulating part 40a1 as a plurality of insulating parts 40a.

  When projected onto a plane (XY plane) parallel to the upper surface 10a of the first electrode 10, a distance Pt1 (pitch Pt1), a distance Pt2 (pitch Pt2), and an angle θ1 are defined. The pitch Pt1 is a distance between the center of the width of the first insulating portion 40a1 in the fifth direction D5 and the center of the width of the second insulating portion 40a2 in the fifth direction D5. The pitch Pt2 is a distance between the center of the width of the first conductive portion 20a1 in the X-axis direction and the center of the width of the second conductive portion 20a2 in the X-axis direction. The angle θ1 is an angle between the Y-axis direction and the fifth direction D5. In this example, the angle between the X-axis direction and the fourth direction D4 is also θ1.

In an embodiment,
Pt1 / cos θ1 ≦ Pt2 · tan θ1 (1)
It is.

  That is, as shown in FIG. 5, Pt1 / cos θ1 = L1 and Pt2 · tan θ1 = L2. Thus, the condition (1) means that the relationship of L1 ≦ L2 is satisfied. When this condition (1) is satisfied, the metal mask M1 overlaps one of the plurality of insulating portions 40a in the longitudinal direction (Y-axis direction). Thereby, the sway of the metal mask M1 can be reduced more effectively, which is more preferable.

(Third embodiment)
FIG. 6 is a schematic plan view illustrating a part of the organic electroluminescent element according to the third embodiment.
FIG. 6 shows a projected image when a part of the organic electroluminescent element according to the third embodiment is projected onto the XY plane.
The organic electroluminescent element 112 according to the embodiment includes a first electrode 10, a second electrode 20, an organic light emitting layer 30, and an insulating layer 40. In this example, illustration of the first electrode 10 and the organic light emitting layer 30 is omitted.

  The second electrode 20 includes, as a plurality of conductive portions 20a, a first conductive portion 20a1 and a second conductive portion 20a2 that is spaced apart from the first conductive portion 20a1. The insulating layer 40 includes a first insulating part 40a1 and a second insulating part 40a2 arranged apart from the first insulating part 40a1 as a plurality of insulating parts 40a.

  When projected onto a plane (XY plane) parallel to the upper surface 10a of the first electrode 10, a pitch Pt1, a pitch Pt2, and an angle θ1 are defined. The pitch Pt1 is a distance between the center of the width of the first insulating portion 40a1 in the fifth direction D5 and the center of the width of the second insulating portion 40a2 in the fifth direction D5. The pitch Pt2 is a distance between the center of the width of the first conductive portion 20a1 in the X-axis direction and the center of the width of the second conductive portion 20a2 in the X-axis direction. The angle θ1 is an angle between the Y-axis direction and the fifth direction D5. In this example, the angle between the X-axis direction and the fourth direction D4 is also θ1.

In an embodiment,
Pt2 ≧ Pt1 (2)
Pt1 / cos θ1−Pt2 · tan θ1 ≦ Pt2 (3)
Meet.

  That is, as shown in FIG. 6, since Pt1 / cos θ1 = L1 and Pt2 · tan θ1 = L2, L1-L2 = L3. Thus, the condition (3) means that the relationship L3 ≦ Pt2 is satisfied. When these conditions (2) and (3) are satisfied, the longitudinal to lateral ratio of the region r where the metal mask M1 does not overlap the insulating portion 40a is 1: 1 or less in the longitudinal direction (Y-axis direction). Thereby, the sway of the metal mask M1 can be reduced more effectively, which is more preferable.

(Fourth embodiment)
FIG. 7 is a schematic plan view illustrating an organic electroluminescent element according to the fourth embodiment.
FIG. 8 is a schematic cross-sectional view illustrating an organic electroluminescent element according to the fourth embodiment.
8 is a cross-sectional view taken along line C1-C2 of FIG.

  The organic electroluminescent element 113 according to the embodiment further includes an auxiliary wiring layer 50.

  The stacked body SB includes the first electrode 10, the second electrode 20, the organic light emitting layer 30, and the insulating layer 40, and further includes an auxiliary wiring layer 50. The auxiliary wiring layer 50 extends along a plane parallel to the upper surface 10 a of the first electrode 10. That is, the auxiliary wiring layer 50 extends in the XY plane. In this example, the auxiliary wiring layer 50 is provided on the upper surface 10 a of the first electrode 10. For example, the auxiliary wiring layer 50 is provided between the first electrode 10 and the insulating layer 40.

  The auxiliary wiring layer 50 includes a plurality of auxiliary wiring portions 50a. Each of the plurality of auxiliary wiring portions 50a is provided between the first electrode 10 and each of the plurality of insulating portions 40a. Each of the plurality of auxiliary wiring portions 50a extends, for example, in the fourth direction D4 and is spaced apart in the fifth direction D5. That is, each of the plurality of auxiliary wiring portions 50a is inclined with respect to each of the plurality of conductive portions 20a. The intervals between the plurality of auxiliary wiring portions 50a are, for example, constant. Each of the plurality of auxiliary wiring portions 50 a is electrically connected to the first electrode 10. Each of the plurality of auxiliary wiring portions 50a is in contact with the first electrode 10, for example.

  The conductivity of the auxiliary wiring layer 50 is higher than the conductivity of the first electrode 10. The auxiliary wiring layer 50 has light reflectivity, for example. The light reflectance of the auxiliary wiring layer 50 is higher than the light reflectance of the first electrode 10. The auxiliary wiring layer 50 is, for example, a metal wiring. For example, the auxiliary wiring layer 50 functions as an auxiliary electrode that transmits a current flowing through the first electrode 10. Thereby, in the organic electroluminescent element 113, for example, the amount of current flowing in the direction parallel to the upper surface 10 a of the first electrode 10 can be made uniform compared to the organic electroluminescent element 110. For example, the in-plane light emission luminance can be made more uniform.

  The auxiliary wiring layer 50 includes at least one element selected from the group consisting of Mo, Ta, Nb, Al, Ni, and Ti, for example. The auxiliary wiring layer 50 can be, for example, a mixed film containing an element selected from this group. The auxiliary wiring layer 50 can be a laminated film containing those elements. For the auxiliary wiring layer 50, for example, a laminated film of Nb / Mo / Al / Mo / Nb can be used. The auxiliary wiring layer 50 functions as, for example, an auxiliary electrode that suppresses a potential drop of the first electrode 10. The auxiliary wiring layer 50 can function as a lead electrode for supplying current.

  The organic electroluminescent element 113 includes the first electrode 10. The first electrode 10 has, for example, a rectangular shape. The first electrode 10 includes a first end ed1 and a second end ed2. The second end ed2 is separated from the first end ed1 in the Y-axis direction and the X-axis direction. That is, the first end ed1 and the second end ed2 are located on a diagonal line. An angle between the Y-axis direction and the fifth direction D5 is θ1. In this example, the angle between the X-axis direction and the fourth direction D4 is also θ1. The angle between the line segment Dg connecting the first end ed1 and the second end ed2 and the X-axis direction is θ2.

In an embodiment,
5 degrees ≦ θ1 ≦ θ2 (4)
It is.

  The organic electroluminescent device 113 further includes a first pad unit 60 and a second pad unit 70. The first pad part 60 is electrically connected to the first electrode 10 and the auxiliary wiring layer 50. The first pad portion 60 includes a first wiring 60a and a second wiring 60b. The second wiring 60b is separated from the first wiring 60a in the X-axis direction. The second pad unit 70 is electrically connected to the second electrode 20. The second pad portion 70 includes a third wiring 70a and a fourth wiring 70b. The fourth wiring 70b is separated from the third wiring 70a in the Y-axis direction. The first electrode 10 is provided between the first wiring 60a and the second wiring 60b and between the third wiring 70a and the fourth wiring 70b.

  That is, the first wiring 60a is provided on one end side of both ends along the Y-axis direction of the first electrode 10, and the second wiring 60b is provided on the other end side. The first electrode 10 has a first end ed1 and a second end ed2 located on a diagonal line of the first end ed1. The third wiring 70a is provided on one end side of both ends along the X-axis direction of the first electrode 10, and the fourth wiring 70b is provided on the other end side. Each length H1 of the 3rd wiring 70a and the 4th wiring 70b is longer than each length V1 of the 1st wiring 60a and the 2nd wiring 60b.

  Here, when the condition (4) is satisfied, as shown in FIG. 7, each of the plurality of auxiliary wiring portions 50a is necessarily connected to one of the first pad portions 60 (the first wiring 60a or the second wiring 60b). Is done.

  Each of the plurality of auxiliary wiring portions 50a is disposed obliquely with respect to each of the plurality of conductive portions 20a. At this time, the auxiliary wiring part 50 a located near the center of the first electrode 10 may not be directly connected to the first pad part 60. In such a case, an intermediate wiring (not shown) for connecting between the auxiliary wiring part 50a and the first pad part 60 is further required. By providing the intermediate wiring, the light emitting region may be reduced. Further, if the insulation between the anode-side intermediate wiring and the cathode-side conductive portion is insufficient, there is a possibility of short-circuiting between them. This may reduce the yield.

  When the intermediate wiring is not provided, the auxiliary wiring part 50 a that cannot be directly connected to the first pad part 60 is connected only to the first pad part 60 via the first electrode 10. For this reason, a potential drop may occur and the luminance may become non-uniform.

  According to the embodiment, all of the plurality of auxiliary wiring portions 50 a can be directly connected to the first pad portion 60. For this reason, it is not necessary to provide intermediate wiring. For this reason, the light emitting region is not reduced. There is no short circuit due to poor insulation. It does not reduce the yield. Furthermore, the in-plane uniformity of the luminance can be ensured without the luminance becoming non-uniform.

Here, the fourth embodiment may be implemented in combination with the second embodiment (FIG. 5) or the third embodiment (FIG. 6). For example, when combining the second embodiment and the fourth embodiment, the condition (1) and the condition (4), that is,
Pt1 / cos θ1 ≦ Pt2 · tan θ1 (1)
5 degrees ≦ θ1 ≦ θ2 (4)
Should be satisfied at the same time.

When combining the third embodiment and the fourth embodiment, the condition (2), the condition (3), and the condition (4), that is,
Pt2 ≧ Pt1 (2)
Pt1 / cos θ1−Pt2 · tan θ1 ≦ Pt2 (3)
5 degrees ≦ θ1 ≦ θ2 (4)
Should be satisfied at the same time.

FIG. 9 is a schematic plan view illustrating another second electrode according to the embodiment.
The second electrode 21 according to the embodiment further includes a plurality of cross conductive portions 20c in addition to the plurality of conductive portions 20a. Each of the plurality of cross conductive portions 20c crosses each of the plurality of conductive portions 20a. In this example, each of the plurality of cross conductive portions 20c extends in the X-axis direction and is arranged in the Y-axis direction. The second electrode 21 includes a plurality of conductive portions 20a, a plurality of second openings 20b, a plurality of cross conductive portions 20c, and a plurality of second openings 20d. That is, the second electrode 21 is formed in a lattice shape by these.

  Thus, the embodiment is not limited to the case where the second electrode has a stripe shape. The embodiment can be similarly applied even when the second electrode has a lattice shape.

(Fifth embodiment)
FIG. 10 is a schematic plan view illustrating an organic electroluminescent element according to the fifth embodiment.
The organic electroluminescent element 114 according to the embodiment includes a first electrode 10, a second electrode 20, an organic light emitting layer 30, and an auxiliary wiring layer 50. It is good also as a structure which does not contain the insulating layer 40 like this embodiment.

  The first electrode 10 has an upper surface 10a. The first electrode 10 is light transmissive. The first electrode 10 is, for example, a transparent electrode.

  The second electrode 20 has light reflectivity, for example. The light reflectance of the second electrode 20 is higher than the light reflectance of the first electrode 10. The second electrode 20 is separated from the first electrode 10 in the Z-axis direction. The second electrode 20 includes a plurality of conductive portions 20a. Each of the plurality of conductive portions 20a extends in the Y-axis direction and is spaced apart in the X-axis direction.

  The organic light emitting layer 30 has light transmittance, for example. The organic light emitting layer 30 is transparent, for example. The organic light emitting layer 30 is provided between the first electrode 10 and the second electrode 20.

  The auxiliary wiring layer 50 has light reflectivity, for example. The auxiliary wiring layer 50 is provided between the first electrode 10 and the organic light emitting layer 30. The auxiliary wiring layer 50 includes a plurality of auxiliary wiring portions 50a. Each of the plurality of auxiliary wiring portions 50a extends in the fourth direction D4 and is spaced apart in the fifth direction D5. The fourth direction D4 is parallel to a plane (for example, the upper surface 10a) parallel to the X-axis direction and the Y-axis direction. The fourth direction D4 is inclined with respect to the Y-axis direction. The fifth direction D5 is parallel to a plane parallel to the X-axis direction and the Y-axis direction and intersects the fourth direction D4. In this example, the fourth direction D4 and the fifth direction D5 are parallel to the upper surface 10a. The fifth direction D5 is a direction perpendicular to the fourth direction D4.

  In the embodiment, when projected onto a plane (XY plane) parallel to the upper surface 10a of the first electrode 10, each of the plurality of auxiliary wiring portions 50a is inclined with respect to each of the plurality of conductive portions 20a. Yes. Each of the plurality of auxiliary wiring portions 50a is disposed obliquely with respect to each of the plurality of conductive portions 20a.

  The organic electroluminescent element 114 includes the first electrode 10. The first electrode 10 has, for example, a rectangular shape. The first electrode 10 includes a first end ed1 and a second end ed2. The second end ed2 is separated from the first end ed1 in the Y-axis direction and the X-axis direction. That is, the first end ed1 and the second end ed2 are located on a diagonal line. An angle between the Y-axis direction and the fifth direction D5 is θ1. In this example, the angle between the X-axis direction and the fourth direction D4 is also θ1. The angle between the line segment Dg connecting the first end ed1 and the second end ed2 and the X-axis direction is θ2.

In an embodiment,
5 degrees ≦ θ1 ≦ θ2 (4)
It is.

  The organic electroluminescent device 114 further includes a first pad unit 60 and a second pad unit 70. The first pad part 60 is electrically connected to the first electrode 10 and the auxiliary wiring layer 50. The first pad portion 60 includes a first wiring 60a and a second wiring 60b. The second wiring 60b is separated from the first wiring 60a in the X-axis direction. The second pad unit 70 is electrically connected to the second electrode 20. The second pad portion 70 includes a third wiring 70a and a fourth wiring 70b. The fourth wiring 70b is separated from the third wiring 70a in the Y-axis direction. The first electrode 10 is provided between the first wiring 60a and the second wiring 60b and between the third wiring 70a and the fourth wiring 70b.

  That is, the first wiring 60a is provided on one end side of both ends along the Y-axis direction of the first electrode 10, and the second wiring 60b is provided on the other end side. The first electrode 10 has a first end ed1 and a second end ed2 located on a diagonal line of the first end ed1. The third wiring 70a is provided on one end side of both ends along the X-axis direction of the first electrode 10, and the fourth wiring 70b is provided on the other end side. Each length H1 of the 3rd wiring 70a and the 4th wiring 70b is longer than each length V1 of the 1st wiring 60a and the 2nd wiring 60b.

  Here, when the condition (4) is satisfied, as shown in FIG. 10, each of the plurality of auxiliary wiring portions 50a is necessarily connected to one of the first pad portions 60 (the first wiring 60a or the second wiring 60b). Is done.

  Each of the plurality of auxiliary wiring portions 50a is disposed obliquely with respect to each of the plurality of conductive portions 20a. At this time, the auxiliary wiring part 50 a located near the center of the first electrode 10 may not be directly connected to the first pad part 60. In such a case, an intermediate wiring (not shown) for connecting between the auxiliary wiring part 50a and the first pad part 60 is further required. By providing the intermediate wiring, the light emitting region may be reduced. Further, if the insulation between the anode-side intermediate wiring and the cathode-side conductive portion is insufficient, there is a possibility of short-circuiting between them. This may reduce the yield.

  When the intermediate wiring is not provided, the auxiliary wiring part 50 a that cannot be directly connected to the first pad part 60 is connected only to the first pad part 60 via the first electrode 10. For this reason, a potential drop may occur and the luminance may become non-uniform.

  According to the embodiment, all of the plurality of auxiliary wiring portions 50 a can be directly connected to the first pad portion 60. For this reason, it is not necessary to provide intermediate wiring. For this reason, the light emitting region is not reduced. There is no short circuit due to poor insulation. It does not reduce the yield. Furthermore, the in-plane uniformity of the luminance can be ensured without the luminance becoming non-uniform.

  As in the embodiment, by arranging the plurality of conductive portions 20a obliquely with respect to the plurality of auxiliary wiring portions 50a, for example, it is less likely to see blur (bleeding) due to interference compared to the case where they are arranged vertically. An effect can be obtained.

(Sixth embodiment)
FIG. 11 is a schematic cross-sectional view illustrating a lighting device according to the sixth embodiment.
The illumination device 210 according to the embodiment includes, for example, an organic electroluminescent element 130 and a power supply unit 201. The organic electroluminescent device 130 further includes a first substrate 81, a second substrate 82, and a seal portion 85.

  As shown in FIG. 11, the first electrode 10 is provided on the first substrate 81. The stacked body SB is provided on the first substrate 81. The first substrate 81 is light transmissive. The second substrate 82 is provided on the stacked body SB and faces the first substrate 81. The second substrate 82 is light transmissive. In this example, the configuration of the stacked body SB is the same as the configuration described for the organic electroluminescent element 110. The configuration of the stacked body SB may be the configuration described regarding the organic electroluminescent elements 111 to 114.

  The seal portion 85 is provided in an annular shape along the outer edges of the first substrate 81 and the second substrate 82, for example, and bonds the first substrate 81 and the second substrate 82 together. Thereby, the stacked body SB is sealed by the first substrate 81 and the second substrate 82. In the organic electroluminescent element 130, the distance in the Z-axis direction between the first substrate 81 and the second substrate 82 is defined by the seal portion 85. This configuration can be realized, for example, by including a granular spacer (not shown) in the seal portion 85. For example, a plurality of granular spacers are dispersed in the seal portion 85, and the distance between the first substrate 81 and the second substrate 82 is defined by the diameters of the plurality of spacers.

  In the organic electroluminescent element 130, the thickness (length along the Z-axis direction) of the seal portion 85 is, for example, 1 μm or more and 100 μm or less. More preferably, it is 5 μm or more and 20 μm or less, for example. Thereby, for example, intrusion of moisture can be suppressed. For example, the thickness of the seal portion 85 is substantially the same as the diameter of the spacer dispersed in the seal portion 85.

  In the organic electroluminescent element, there is a configuration in which a recess for accommodating the stacked body SB is provided in the second substrate 82. With this configuration, it is difficult to form the second substrate 82. For example, the cost of the organic electroluminescent element is increased.

  On the other hand, in the organic electroluminescent element 130 according to this embodiment, the distance between the first substrate 81 and the second substrate 82 is defined by the seal portion 85. Thereby, for example, a flat plate-like second substrate 82 can be used. For example, the formation of the second substrate 82 can be facilitated. An increase in cost of the organic electroluminescent element 130 can be suppressed.

  A space between the stacked body SB and the second substrate 82 is filled with, for example, an inert gas. A desiccant or the like may be provided between the stacked body SB and the second substrate 82. The space between the stacked body SB and the second substrate 82 may be, for example, an air layer. The space between the stacked body SB and the second substrate 82 may be filled with, for example, a liquid acrylic resin or epoxy resin. Calcium oxide or barium oxide may be added to the acrylic resin or epoxy resin as a drying material.

  For example, a glass substrate or a resin substrate is used for the first substrate 81 and the second substrate 82. For the seal portion 85, for example, an ultraviolet curable resin or the like is used.

The power supply unit 201 is electrically connected to the first electrode 10 and the second electrode 20. The power supply unit 201 supplies current to the organic light emitting layer 30 through the first electrode 10 and the second electrode 20.
According to the embodiment, a highly productive lighting device can be provided.

(Seventh embodiment)
FIG. 12A and FIG. 12B are schematic views illustrating the illumination system according to the seventh embodiment.
As illustrated in FIG. 12A, the illumination system 311 according to the embodiment includes, for example, an organic electroluminescent element 130 and a control unit 301.

  The control unit 301 is electrically connected to each of the plurality of organic electroluminescent elements 130 and controls turning on / off of each of the plurality of organic electroluminescent elements 130. For example, the controller 301 is electrically connected to the first electrode and the second electrode of each of the plurality of organic electroluminescent elements 130. Accordingly, the control unit 301 individually controls lighting / extinguishing of the plurality of organic electroluminescent elements 130.

As illustrated in FIG. 12B, in the lighting system 312, each of the plurality of organic electroluminescent elements 130 is connected in series. The controller 301 is electrically connected to the first electrode of one organic electroluminescent element 130 among the plurality of organic electroluminescent elements 130. The control unit 301 is electrically connected to the second electrode of another organic electroluminescent element 130 among the plurality of organic electroluminescent elements 130. Accordingly, the control unit 301 collectively controls lighting / extinguishing of the plurality of organic electroluminescent elements 130. As described above, the control unit 301 may individually control lighting and extinction of each of the plurality of organic electroluminescent elements 130, or may control them collectively.
According to the embodiment, a highly productive lighting system can be provided.

  Thus, according to the embodiment, a highly productive organic electroluminescent element, lighting device, and lighting system are provided.

  In the present specification, “vertical” and “parallel” include not only strictly vertical and strictly parallel, but also include, for example, variations in the manufacturing process, and may be substantially vertical and substantially parallel. is good.

  The embodiments of the present invention have been described above with reference to specific examples. However, embodiments of the present invention are not limited to these specific examples. For example, specific elements of the first electrode, the second electrode, the organic light emitting layer, the insulating layer, and the power supply unit included in the lighting device and the control unit included in the lighting system included in the organic electroluminescent element. Concerning configurations, those skilled in the art can appropriately select from the well-known ranges to implement the present invention in the same manner, and are included in the scope of the present invention as long as similar effects can be obtained. Moreover, what combined any two or more elements of each specific example in the technically possible range is also included in the scope of the present invention as long as the gist of the present invention is included.

  In addition, based on the organic electroluminescent element, the illuminating apparatus, and the illumination system described above as the embodiment of the present invention, all organic electroluminescent elements, illuminating apparatus, and illuminating system that can be implemented by those skilled in the art with appropriate design changes are also included. As long as the gist of the present invention is included, it belongs to the scope of the present invention.

  In addition, in the category of the idea of the present invention, those skilled in the art can conceive of various changes and modifications, and it is understood that these changes and modifications also belong to the scope of the present invention. .

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... 1st electrode, 10a ... Upper surface, 10p ... Exposed part, 20, 21 ... 2nd electrode, 20a ... Conductive part, 20c ... Cross-conductive part, 20b, 20d ... 2nd opening part, 30 ... Organic light emitting layer, 30a ... 1st part, 30b ... 2nd part, 30u ... Upper surface, 31 ... 1st layer, 32 ... 2nd layer, 33 ... 3rd layer, 40 ... Insulating layer, 40a ... Insulating part, 40b ... 1st opening part, 40u ... upper surface, 50 ... auxiliary wiring layer, 50a ... auxiliary wiring part, 60 ... first pad part, 60a ... first wiring, 60b ... second wiring, 70 ... second pad part, 70a ... third wiring, 70b ... 4th wiring 81 ... 1st board | substrate 82 ... 2nd board | substrate 85 ... Seal part 110-114, 130, 199 ... Organic electroluminescent element 201 ... Power supply part 210 ... Illuminating device 301 ... Control part 311 312 ... System

Claims (14)

A light transmissive first electrode;
A second electrode spaced apart from the first electrode in a first direction, extending in a second direction intersecting the first direction, and spaced apart in a third direction intersecting the first direction and the second direction; A second electrode including a plurality of conductive portions arranged;
An organic light emitting layer provided between the first electrode and the second electrode;
A fourth direction that is an insulating layer provided between the first electrode and the organic light emitting layer and is inclined with respect to the second direction in parallel to a plane parallel to the second direction and the third direction; An insulating layer including a plurality of insulating portions extending in parallel to the plane and spaced apart in a fifth direction intersecting the fourth direction;
An organic electroluminescent device comprising:   The organic electroluminescent element according to claim 1, wherein an angle between the second direction and the fourth direction is not less than 5 degrees and not more than 85 degrees. The plurality of conductive parts include a first conductive part and a second conductive part,
The plurality of insulating portions include a first insulating portion and a second insulating portion,
The distance between the center of the width of the first insulating portion in the fifth direction and the center of the width of the second insulating portion in the fifth direction is Pt1,
The distance between the center of the width of the first conductive part in the third direction and the center of the width of the second insulating part in the third direction is Pt2,
When the angle between the second direction and the fifth direction is θ1,
Pt1 / cos θ1 ≦ Pt2 · tan θ1
The organic electroluminescent element according to claim 1 or 2. The plurality of conductive parts include a first conductive part and a second conductive part,
The plurality of insulating portions include a first insulating portion and a second insulating portion,
The distance between the center of the first insulating part in the fifth direction and the center of the second insulating part in the fifth direction is Pt1,
The distance between the center of the first conductive part in the third direction and the center of the second conductive part in the third direction is Pt2,
When the angle between the second direction and the fifth direction is θ1,
Pt2 ≧ Pt1
Pt1 / cos θ1-Pt2 · tan θ1 ≦ Pt2
The organic electroluminescent element according to claim 1 or 2. A plurality of auxiliary wiring portions electrically connected to the first electrode;
5. The organic electroluminescent element according to claim 1, wherein each of the plurality of auxiliary wiring portions is provided between the first electrode and each of the plurality of insulating portions. The first electrode includes a first end, and a second end spaced from the first end in the second direction and the third direction,
The angle between the second direction and the fifth direction is θ1,
When an angle between a line segment connecting the first end and the second end and the third direction is θ2,
5 degrees ≦ θ1 ≦ θ2
The organic electroluminescent element according to claim 5. A first pad portion electrically connected to the first electrode and the plurality of auxiliary wiring portions;
A second pad portion electrically connected to the second electrode;
Further comprising
The first pad portion includes a first wiring and a second wiring spaced apart from the first wiring in the third direction;
The second pad portion includes a third wiring and a fourth wiring spaced apart from the third wiring in the second direction,
The organic electroluminescent element according to claim 5 or 6, wherein the first electrode is provided between the first wiring and the second wiring and between the third wiring and the fourth wiring. A plurality of auxiliary wiring portions electrically connected to the first electrode;
A first pad portion electrically connected to the first electrode and the plurality of auxiliary wiring portions;
A second pad portion electrically connected to the second electrode;
Further comprising
Each of the plurality of auxiliary wiring portions is provided between the first electrode and each of the plurality of insulating portions,
The first pad portion includes a first wiring and a second wiring spaced apart from the first wiring in the third direction;
The second pad portion includes a third wiring and a fourth wiring spaced apart from the third wiring in the second direction,
The first electrode includes a first end, and a second end spaced from the first end in the second direction and the third direction,
The first electrode is provided between the first wiring and the second wiring, and between the third wiring and the fourth wiring;
When an angle between a line segment connecting the first end and the second end and the third direction is θ2,
5 degrees ≦ θ1 ≦ θ2
The organic electroluminescent element according to claim 3 or 4.   The organic electroluminescence device according to claim 1, wherein the second electrode further includes a plurality of cross conductive portions that cross each of the plurality of conductive portions. The organic light emitting layer is positioned between each of the plurality of insulating portions, a first portion provided on a part of the first electrode, and a first portion provided on each of the plurality of insulating portions. 2 parts,
The first portion includes a first region that overlaps each of the plurality of conductive portions, and a second region that is located between each of the plurality of conductive portions and does not overlap each of the plurality of conductive portions,
The second portion includes a third region that overlaps each of the plurality of conductive portions, and a fourth region that is positioned between each of the plurality of conductive portions and does not overlap each of the plurality of conductive portions. Item 10. The organic electroluminescence device according to any one of Items 1 to 9. A light transmissive first electrode;
A second electrode spaced apart from the first electrode in a first direction, extending in a second direction intersecting the first direction, and spaced apart in a third direction intersecting the first direction and the second direction; A second electrode including a plurality of conductive portions arranged;
An organic light emitting layer provided between the first electrode and the second electrode;
Provided between the first electrode and the organic light emitting layer, extending in a fourth direction parallel to the second direction and the plane parallel to the third direction and inclined with respect to the second direction; A plurality of auxiliary wiring parts arranged in parallel and spaced apart in a fifth direction intersecting the fourth direction;
An organic electroluminescent device comprising: A first pad portion electrically connected to the first electrode and the plurality of auxiliary wiring portions;
A second pad portion electrically connected to the second electrode;
Further comprising
The first pad portion includes a first wiring and a second wiring spaced apart from the first wiring in the third direction;
The second pad portion includes a third wiring and a fourth wiring spaced apart from the third wiring in the second direction,
The first electrode includes a first end, and a second end spaced from the first end in the second direction and the third direction,
The first electrode is provided between the first wiring and the second wiring, and between the third wiring and the fourth wiring;
The angle between the second direction and the fifth direction is θ1,
When an angle between a line segment connecting the first end and the second end and the third direction is θ2,
5 degrees ≦ θ1 ≦ θ2
The organic electroluminescent element according to claim 11. The organic electroluminescent element according to any one of claims 1 to 12,
A power supply unit electrically connected to the first electrode and the second electrode, and supplying a current to the organic light emitting layer through the first electrode and the second electrode;
A lighting device comprising: A plurality of organic electroluminescent elements according to any one of claims 1 to 12,
A controller that is electrically connected to each of the plurality of organic electroluminescent elements and controls lighting / extinction of each of the plurality of organic electroluminescent elements;
With lighting system.

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