JP2016157572A - Light emission device and illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emission device and an illumination device that can reduce luminance unevenness and power loss even in a top emission structure.SOLUTION: A light emission device 1 includes a light emission part 10 which has a top emission structure and emit light, and a light transmission part 20 for transmitting therethrough light incident from the external. The light emission part has a first reflection part 11 which extends in a first direction and has electrical conductivity, a first electrode 12 which is provided on the first reflection part and has electrical conductivity and light transmissivity, a first insulation part 15 which is provided to cover the first reflection part and the first electrode and has an insulation property and light transmissivity, a first organic light emission part 13 which is provided on the first insulation part and electrically connected to the first electrode, a second electrode 14 which is provided on the first organic light emission part and has electrical conductivity and light transmissivity, and a third electrode 16 which is provided on the second electrode and has electrical conductivity. The third electrode has lower electrical resistance than the second electrode.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a light emitting device and a lighting device.

There is a light-emitting device including a light-emitting unit provided with an organic light-emitting unit that emits light by organic electroluminescence (OEL) and a transmission unit that transmits light incident from the outside.
Such light emitting devices include those having a so-called bottom emission structure and those having a top emission structure.
If the top emission structure is adopted, a reflection portion that reflects light emitted from the organic light emitting portion can be formed by using a photolithography method. Therefore, it is possible to reduce the size of the reflecting portion that does not transmit light. If the reflective part can be miniaturized, the visibility through the light emitting device can be improved.
On the other hand, in the case of the top emission structure, the electrode provided on the side opposite to the side where the reflecting part of the organic light emitting part is provided needs to transmit the light emitted from the organic light emitting part. Therefore, this electrode is formed using a material having conductivity and light transmittance such as ITO (Indium Tin Oxide).
However, when ITO or the like is used, the electrical resistance is higher than that of aluminum or the like, and there is a problem that luminance unevenness and power loss increase.

Special table 2012-506604 gazette

  The problem to be solved by the present invention is to provide a light emitting device and a lighting device that can reduce luminance unevenness and power loss even with a top emission structure.

The light emitting device according to the embodiment is a light emitting device having a top emission structure and including a light emitting unit that emits light; and a transmission unit that transmits light incident from the outside.
The light emitting portion extends in a first direction and has a first reflective portion having conductivity; a first electrode provided on the first reflective portion and having conductivity and light transmittance; A first insulating portion provided so as to cover the first reflecting portion and the first electrode and having insulating properties and light transmission properties; provided on the first insulating portion; A first organic light emitting part electrically connected to the first electrode; a second electrode provided on the first organic light emitting part and having conductivity and light transmission; And a third electrode having conductivity and provided on the second electrode.
The third electrode is lower than the electric resistance of the second electrode.

  According to the embodiment of the present invention, it is possible to provide a light emitting device and a lighting device that can reduce luminance unevenness and power loss even with a top emission structure.

FIG. 1A is a schematic cross-sectional view for illustrating the light emitting device 1 according to the first embodiment. FIG.1 (b) is the sectional view on the AA line in Fig.1 (a). FIG. 6 is a schematic cross-sectional view for illustrating a light emitting device 41 according to a second embodiment.

The invention according to the embodiment is a light emitting device that has a top emission structure and includes a light emitting unit that emits light; and a transmission unit that transmits light incident from the outside.
The light emitting portion extends in a first direction and has a first reflective portion having conductivity; a first electrode provided on the first reflective portion and having conductivity and light transmittance; A first insulating portion provided so as to cover the first reflecting portion and the first electrode and having insulating properties and light transmission properties; provided on the first insulating portion; A first organic light emitting part electrically connected to the first electrode; a second electrode provided on the first organic light emitting part and having conductivity and light transmission; And a third electrode having conductivity and provided on the second electrode.
The third electrode has an electric resistance lower than that of the second electrode, and has a linear shape extending in a second direction intersecting the first direction.
According to this light emitting device, it is possible to reduce luminance unevenness and power loss even with a top emission structure.
Further, since the third electrode is formed in the uppermost layer of the light emitting portion, the degree of freedom with respect to the arrangement form, the formation method, and the like can be increased.

The invention according to the embodiment is a light emitting device that has a top emission structure and includes a light emitting unit that emits light; and a transmission unit that transmits light incident from the outside.
The light emitting section includes a fourth electrode having conductivity and light transmission; a fifth electrode having reflectivity and conductivity provided on the fourth electrode; and the fourth electrode. And a second insulating part provided so as to cover the fifth electrode and having an insulating property and a light transmitting property; provided on the second insulating part, and the fifth electrode A second organic light emitting part electrically connected to the second insulating part; provided on the second insulating part; having conductivity; provided separately from the second organic light emitting part; And a seventh electrode provided so as to cover the second organic light-emitting portion and the sixth electrode and having conductivity and light transmittance.
The sixth electrode has an electric resistance lower than that of the seventh electrode, and is provided at a position different from the fifth electrode in plan view, and the sixth electrode in plan view; A region between the fifth electrode serves as the transmission portion.
According to this light emitting device, it is possible to reduce luminance unevenness and power loss even with a top emission structure.
Further, since the sixth electrode is provided on the second insulating portion, it can be formed using, for example, a photolithography method.
Therefore, the sixth electrode can be easily miniaturized.

The invention which concerns on embodiment is the illuminating device which comprised said light-emitting device.
According to this illumination device, it is possible to reduce luminance unevenness and power loss even with a top emission structure.

Hereinafter, embodiments will be illustrated with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
In this specification, “having light transmission” and “transmitting light” are not limited to the case where the light transmittance is 100%. “Having light transmission” and “transmitting light” are not limited to having a transmittance of at least zero for light having a wavelength of visible light.
In addition, arrows X, Y, and Z in the drawings represent three directions orthogonal to each other. For example, the direction perpendicular to the main surface of the substrate 2 or the substrate 3 is defined as the Z direction. In addition, one direction in a plane parallel to the main surface of the substrate 2 or the substrate 3 is defined as a Y direction (corresponding to an example of a first direction), and a direction perpendicular to the Z direction and the Y direction is defined as an X direction. (Corresponding to an example of the second direction).
In addition, in this specification, “plan view” represents a case when viewed from the Z direction.

(First embodiment)
FIG. 1A is a schematic cross-sectional view for illustrating the light emitting device 1 according to the first embodiment.
FIG.1 (b) is the sectional view on the AA line in Fig.1 (a).
As shown in FIGS. 1A and 1B, the light emitting device 1 includes a substrate 2, a substrate 3, a sealing unit 4, a light emitting unit 10, and a transmission unit 20.
The light emitting device 1 illustrated in FIGS. 1A and 1B is a top emission type light emitting device.
Moreover, since the light-emitting device 1 is a transmissive light-emitting device, the light-emitting device 1 includes a light-emitting unit 10 that emits light L2 by organic electroluminescence and a transmission unit 20 that transmits light L1 incident from the outside.

The substrate 2 has a plate shape.
The substrate 2 is formed using a material having insulation properties and light transmission properties.
The substrate 3 is provided to face the substrate 2.
The substrate 3 has a plate shape.
The substrate 3 is formed using a material having optical transparency.
The substrates 2 and 3 are formed using, for example, alkali-free glass not containing an alkali component such as sodium or potassium, soda-lime glass (also referred to as soda glass), quartz, polyethylene terephthalate, polypropylene, polycarbonate, acrylic, or the like. Can do.
In this case, it is preferable to form the substrate 2 and the substrate 3 from materials having low moisture permeability.
For example, the substrate 2 and the substrate 3 are preferably formed from an inorganic material such as alkali-free glass, soda-lime glass, or quartz.

The sealing portion 4 has a frame shape and is provided between the substrate 2 and the substrate 3.
The sealing unit 4 seals the peripheral edges of the substrate 2 and the substrate 3.
The sealing portion 4 can be formed from, for example, a UV curable resin or a glass material such as a frit.
In this case, the sealing part 4 is preferably formed from a material having low moisture permeability such as a glass material such as frit.
In the space defined by the substrate 2, the substrate 3, and the sealing portion 4, for example, an inert gas such as nitrogen gas or argon gas can be sealed. Further, a silicone solution containing an alkyl-based Al complex having a water absorption function may be filled in the space.

The light emitting unit 10 includes a reflecting unit 11 (corresponding to an example of a first reflecting unit), an electrode 12 (corresponding to an example of a first electrode), and an insulating unit 15 (corresponding to an example of a first insulating unit). And an organic light emitting unit 13 (corresponding to an example of a first organic light emitting unit), an electrode 14 (corresponding to an example of a second electrode), and an electrode 16 (corresponding to an example of a third electrode).
The reflecting portion 11 is provided on the surface of the substrate 2 that faces the substrate 3.
The reflection part 11 can extend in the X direction or the Y direction, for example, and can have a linear shape in plan view.
The reflector 11 illustrated in FIGS. 1A and 1B is a case that extends in the Y direction and has a linear shape in plan view.

A plurality of reflecting portions 11 exhibiting a linear shape can be provided.
In this case, the arrangement form of the plurality of reflecting portions 11 may be provided at a predetermined interval or may be provided at an arbitrary interval.

The reflection unit 11 reflects the light L2 emitted from the organic light emitting unit 13 and emits the light L2 to the front side of the light emitting device 1 (the emission side of the light L2). That is, the reflecting part 11 has a reflector function.
Moreover, as will be described later, the reflecting portion 11 has conductivity and also has a function of reducing the electrical resistance on the anode side.
That is, the electrode 12 and the reflection part 11 cooperate and function as an anode.

The reflection part 11 has a high reflectance with respect to the light L2 emitted from the organic light emitting part 13, and can be formed using a conductive material.
The reflection part 11 can be formed using metals, such as silver, aluminum, copper, gold | metal | money, these alloys, for example.

In the region where the reflecting portion 11, the electrode 12, the insulating portion 15, the organic light emitting portion 13, the electrode 14, and the electrode 16 are laminated, that is, the light emitting portion 10, light emission by organic electroluminescence occurs.
On the other hand, since the reflecting portion 11 has a reflector function, the light L1 incident on the light emitting device 1 is not transmitted.
However, the light L1 incident on the light emitting device 1 can pass between the reflecting portions 11.
Therefore, the transmissive part 20 is an area between the reflective parts 11 in plan view.

The electrode 12 is provided on the reflecting portion 11.
In this case, the electrode 12 is electrically connected to the reflecting portion 11.
The electrode 12 has the same form as the reflecting portion 11 in plan view.
The electrode 12 can be, for example, an electrode (anode) for injecting holes into the organic light emitting unit 13.
The electrode 12 can be formed using, for example, a material having conductivity and light transmittance.
The electrode 12 can be formed using, for example, ITO (Indium Tin Oxide), ZnO (Zinc oxide), IZO (registered trademark), IGZO, or the like.
At least one of the reflecting portion 11 and the electrode 12 is electrically connected to a terminal (not shown) provided outside the sealing portion 4.

Here, when the electrode 12 is formed using a material having conductivity and light transmission, the electrical resistance is higher than that in the case of using a highly conductive material such as aluminum.
Therefore, with the increase in size of the light-emitting device 1, there is a possibility that a problem that the luminance is greatly different between the central portion and the end portion of the light-emitting device 1 may occur.
Therefore, in the present embodiment, the reflection portion 11 that is electrically connected to the electrode 12 and has an electric resistance lower than that of the electrode 12 is provided to reduce the electric resistance on the anode side. .

The insulating part 15 is provided on the substrate 2 so as to cover the reflecting part 11 and the electrode 12.
The insulating part 15 insulates the reflecting part 11 and the electrode 12.
Note that a groove portion penetrating in the Z direction is provided in a portion provided on the electrode 12 of the insulating portion 15 so that the electrode 12 and the organic light emitting portion 13 are electrically connected.
The insulating part 15 transmits the light L1 incident between the reflecting parts 11.
The insulating portion 15 has a film shape and is formed using a material having an insulating property and a light transmitting property.
The insulating part 15 can be formed from resin, such as a polyimide, for example.

The organic light emitting unit 13 has a film shape and is provided on the insulating unit 15.
In this case, the organic light emitting unit 13 is also provided inside the groove provided in the insulating unit 15 and is electrically connected to the electrode 12.
Moreover, the form of the organic light emitting unit 13 in a plan view can be a plurality of islands or dots. That is, the organic light emitting unit 13 can be selectively provided.
When the form of the organic light emitting unit 13 is a plurality of islands or dots, each organic light emitting unit 13 may be individually lit. For example, a switching element such as a TFT (Thin Film Transistor) (not shown) may be provided below the reflecting unit 11 so that only some of the plurality of organic light emitting units 13 are lit or all of them are lit.
In this way, characters, figures, images, etc. can be displayed.

The organic light emitting unit 13 emits light by organic electroluminescence.
The organic light emitting unit 13 can be, for example, an organic light-emitting diode (OLED).
The organic light emitting unit 13 includes, for example, a hole transport layer containing 4,4′-bis [N- (2-naphthyl) -N-phenyl-amino] biphenyl (generally also referred to as α-NPD), tris ( An organic light-emitting layer containing an 8-quinolinolato) aluminum complex (also generally referred to as Alq3) and an electron injection layer containing lithium fluoride (LiF) can be stacked.
However, the material and configuration of the organic light emitting unit 13 are not limited to those illustrated, and can be changed as appropriate.
For example, the organic light emitting unit 13 may have a single layer structure including only an organic light emitting layer, or may have a multilayer structure further including a hole injection layer including phthalocyanine and an electron transport layer including a fluorene derivative. it can.
In addition, the organic light emitting unit 13 includes a multi-photo-emission (MPE) in which a plurality of organic light emitting layers are connected in series via a charge generation layer (CGL) including HAT (CN) 6 and the like. ) It may have a structure.

The electrode 14 is provided on the organic light emitting unit 13.
The electrode 14 has a film shape and covers the organic light emitting unit 13.
In this case, the electrode 14 is electrically connected to the organic light emitting unit 13.
The form of the electrode 14 in plan view can be the same as that of the organic light emitting unit 13, for example.
The electrode 14 can be, for example, an electrode (cathode) for injecting electrons into the organic light emitting unit 13.
Moreover, since the electrode 14 is also provided between the reflection parts 11, it transmits the incident light L1.
Further, the electrode 14 transmits the light L <b> 2 emitted from the organic light emitting unit 13.
Therefore, the electrode 14 is formed using a material having conductivity and light transmission.
The electrode 14 can be formed using, for example, ITO (Indium Tin Oxide), ZnO (Zinc oxide), IZO (registered trademark), IGZO, or the like.
In this case, the material of the electrode 14 may be the same as the material of the electrode 12 or may be different from the material of the electrode 12.

The electrode 16 is provided on the electrode 14.
For example, the electrode 16 may extend in the X direction or the Y direction, and may have a linear shape in plan view.
The electrode 16 illustrated in FIG. 1 is a case that extends in the X direction and exhibits a linear shape in plan view.

A plurality of electrodes 16 having a linear shape can be provided.
In this case, the arrangement form of the plurality of electrodes 16 may be provided with a predetermined interval or may be provided with an arbitrary interval.

In addition, the electrode 16 may have, for example, a portion extending in the X direction and a portion extending in the Y direction, and may have a mesh shape in plan view.
In this case, the dimensions of the plurality of meshes may be the same or different.
Further, the shape of the electrode 16 in a plan view can be a plurality of islands or dots. That is, the electrode 16 can be selectively provided.
At least one of the electrode 14 and the electrode 16 is electrically connected to a terminal (not shown) provided outside the sealing portion 4.

Here, since the electrode 14 is formed using a material having conductivity and light transmittance, the electrical resistance is higher than that in the case of using a highly conductive material such as aluminum.
For this reason, as the light emitting device 1 is increased in size, there is a possibility that the luminance is greatly different between the central portion and the end portion of the light emitting device 1 or the power loss is increased.
Therefore, in the present embodiment, by providing the electrode 16 that is electrically connected to the electrode 14 and has an electric resistance lower than that of the electrode 14, the electric resistance on the cathode side is reduced.
That is, the electrode 14 and the electrode 16 cooperate to form a cathode.
With the light emitting device 1 according to the present embodiment, it is possible to reduce luminance unevenness and power loss even with a top emission structure.

The electrode 16 can be formed using a highly conductive material.
The electrode 16 can be formed using metals, such as silver, aluminum, copper, gold | metal | money, these alloys, for example.
In this case, the material of the electrode 16 can be the same as the material of the reflecting portion 11, or can be different from the material of the reflecting portion 11.

The method for forming the electrode 16 is not particularly limited, and can be formed by using, for example, a sputtering method or a vapor deposition method.
In this case, since the electrode 16 is formed in the uppermost layer of the light emitting unit 10, the degree of freedom with respect to the arrangement form, the forming method, and the like can be increased.

In addition, since the electrode 16 is also provided between the reflecting portions 11, if the width dimension W of the electrode 16 made of metal is excessively increased or the pitch dimension P of the electrode 16 is excessively decreased, the light emitting device 1 is provided. There is a possibility that the transmission of the incident light L1 may be hindered.
If the transmission of the light L1 incident on the light emitting device 1 is hindered, the visibility through the light emitting device 1 may be deteriorated.
Therefore, in the present embodiment, the width dimension W of the electrode 16 is set to be 50 μm or more and 200 μm or less.
Further, the pitch dimension P of the electrodes 16 is set to be 300 μm or more and 1000 μm or less.

(Second Embodiment)
FIG. 2 is a schematic cross-sectional view for illustrating a light emitting device 41 according to the second embodiment.
The light emitting device 41 illustrated in FIG. 2 is a top emission type light emitting device.
The light emitting device 41 is a transmissive light emitting device.
As shown in FIG. 2, the light emitting device 41 includes a substrate 2, a substrate 3, a sealing unit 4, a light emitting unit 50, and a transmission unit 20.

The light emitting part 50 includes an electrode 52 (corresponding to an example of a fourth electrode), an electrode 51 (corresponding to an example of a fifth electrode), an insulating part 55 (corresponding to an example of a second insulating part), an organic The light emitting portion 53 (corresponding to an example of a second organic light emitting portion), an electrode 56 (corresponding to an example of a sixth electrode), and an electrode 54 (corresponding to an example of a seventh electrode) are included.
The electrode 52 has a film shape and is provided on the surface of the substrate 2 facing the substrate 3.
The electrode 52 can be formed using, for example, a material having conductivity and light transmittance.
The electrode 52 can be formed using, for example, ITO (Indium Tin Oxide), ZnO (Zinc oxide), IZO (registered trademark), IGZO, or the like.

The electrode 51 is provided on the electrode 52.
For example, the electrode 51 may extend in the X direction or the Y direction, and may have a linear shape in plan view.
The electrode 51 illustrated in FIG. 2 is a case that extends in the Y direction and exhibits a linear shape in plan view.

A plurality of linear electrodes 51 can be provided.
In this case, the arrangement form of the plurality of electrodes 51 may be provided with a predetermined interval, or may be provided with an arbitrary interval.

The electrode 51 is reflective, reflects the light L2 emitted from the organic light emitting unit 53, and emits the light L2 to the front side of the light emitting device 41 (the light L2 emission side). That is, the electrode 51 has a reflector function.
As will be described later, the electrode 51 has conductivity and also has a function of reducing the electrical resistance on the anode side.
That is, the electrode 52 and the electrode 51 cooperate to form an anode.

The electrode 51 has a high reflectance with respect to the light L <b> 2 emitted from the organic light emitting unit 53. The electrode 51 can be, for example, an electrode (cathode) for injecting electrons into the organic light emitting unit 53.
The electrode 51 can be formed using metals, such as silver, aluminum, copper, gold | metal | money, these alloys, for example.
At least one of the electrode 51 and the electrode 52 is electrically connected to a terminal (not shown) provided outside the sealing portion 4.

  Since the electrode 51 is linear in a plan view, the influence of resistance is increased in the longitudinal direction. Therefore, the electrode 52 is provided, and the electrode 51 and the electrode 52 are electrically connected to reduce the electrical resistance of the cathode.

In the region where the electrode 52, the electrode 51, the insulating portion 55, the organic light emitting portion 53, the electrode 56, and the electrode 54 are stacked, that is, the light emitting portion 50, light emission by organic electroluminescence occurs.
On the other hand, since the electrode 51 has the function of a reflector, the light L1 incident on the light emitting device 41 is not transmitted.
Further, the light L1 incident on the light emitting device 41 does not pass through the electrode 56.
However, the light L1 incident on the light emitting device 41 can pass through the region between the electrodes 51 and where the electrode 56 is not provided.
Therefore, the transmissive portion 20 is a region between the electrode 51 and the electrode 56 in plan view.

The insulating part 55 is provided so as to cover the electrode 51 and the electrode 52.
The insulating part 55 insulates the electrode 51 and the electrode 52.
In addition, a groove portion penetrating in the Z direction is provided in a portion provided on the electrode 51 of the insulating portion 55 so that the organic light emitting portion 53 and the electrode 51 are electrically connected.
The insulating part 55 transmits the light L1 incident between the electrodes 51.
The insulating portion 55 has a film shape and is formed using a material having insulating properties and light transmission properties.
The insulating part 55 can be formed from a resin such as polyimide, for example.

The organic light emitting unit 53 has a film shape and is provided on the insulating unit 55.
In this case, the organic light emitting unit 53 is also provided inside a groove provided in the insulating unit 55 and is electrically connected to the electrode 51.
In addition, a groove portion penetrating in the Z direction is provided at a portion where the electrode 56 of the organic light emitting portion 53 is provided. An electrode 56 is provided inside the groove of the organic light emitting unit 53, and the electrode 56 is provided separately from the organic light emitting unit 53.

Moreover, the form of the organic light emitting unit 53 in a plan view can be a plurality of islands or dots. That is, the organic light emitting unit 53 can be selectively provided.
When the form of the organic light emitting unit 53 is a plurality of islands or dots, each of the organic light emitting units 53 may be individually turned on. For example, a switching element such as a TFT (Thin Film Transistor) (not shown) may be provided below the electrode 52 to light only a part of the plurality of organic light emitting units 53 or all of them.
In this way, characters, figures, images, etc. can be displayed.

  The organic light emitting unit 53 can be, for example, an organic light emitting diode, and the material and configuration thereof can be the same as those of the organic light emitting unit 13 described above.

The electrode 56 is provided on the insulating portion 55.
In this case, the electrode 56 is provided at a position different from the electrode 51 in plan view.
The electrode 56 may extend in the X direction or the Y direction, for example, and may have a linear shape in plan view.
The electrode 56 illustrated in FIG. 2 is a case that extends in the Y direction and has a linear shape in plan view.

A plurality of linear electrodes 56 can be provided.
In this case, the arrangement form of the plurality of electrodes 56 may be provided at a predetermined interval or may be provided at an arbitrary interval.

Further, the shape of the electrode 56 in a plan view can be a plurality of islands, dots, or the like. That is, the electrode 56 can be selectively provided.
The electrode 54 has a film shape and is provided so as to cover the organic light emitting unit 13 and the electrode 56.
In this case, the electrode 54 is electrically connected to the organic light emitting unit 53 and the electrode 56.
The electrode 54 can be, for example, an electrode (anode) for injecting electrons into the organic light emitting unit 53.
Moreover, since the electrode 54 is also provided between the electrodes 51, the incident light L1 is transmitted.
The electrode 54 transmits the light L2 emitted from the organic light emitting unit 53.
Therefore, the electrode 54 is formed using a material having conductivity and light transmission.
The electrode 54 can be formed using, for example, ITO (Indium Tin Oxide), ZnO (Zinc oxide), IZO (registered trademark), IGZO, or the like.
In this case, the material of the electrode 54 can be the same as the material of the electrode 52, or can be different from the material of the electrode 52.
At least one of the electrode 54 and the electrode 56 is electrically connected to a terminal (not shown) provided outside the sealing portion 4.

Here, since the electrode 54 is formed using a material having conductivity and light transmittance, the electric resistance is higher than that in the case of using a highly conductive material such as aluminum.
For this reason, as the light emitting device 41 is increased in size, there is a possibility that the luminance is greatly different between the central portion and the end portion of the light emitting device 41 or the power loss is increased.
Therefore, in the present embodiment, an electrode 56 that is electrically connected to the electrode 54 and has an electric resistance lower than that of the electrode 54 is provided to reduce the electric resistance on the anode side.
That is, the electrode 54 and the electrode 56 cooperate to form an anode.

The electrode 56 can be formed using a highly conductive material.
The electrode 56 can be formed using metals, such as silver, aluminum, copper, gold | metal | money, these alloys, for example.
In this case, the material of the electrode 56 can be the same as the material of the electrode 51, or can be different from the material of the electrode 51.

Since the electrode 56 is provided on the insulating portion 55, it can be formed by using, for example, a photolithography method.
Therefore, it becomes easy to achieve miniaturization of the electrode 56.

Further, since the electrode 56 is also provided between the electrodes 51, if the width dimension of the electrode 56 made of metal is too long or the pitch dimension of the electrode 56 is too short, the light incident on the light emitting device 41 will be described. There is a possibility that the transmission of L1 may be hindered.
If the transmission of the light L1 incident on the light emitting device 41 is hindered, the visibility through the light emitting device 41 may be deteriorated.
Therefore, in the present embodiment, the width dimension of the electrode 56 is set to be 5 μm or more and 1000 μm or less.
Further, the pitch dimension of the electrodes 56 is set to be 5 μm or more and 1000 μm or less.

(Third embodiment)
Next, the illumination device according to the third embodiment is illustrated.
The illumination device according to the third embodiment includes the light-emitting device 1 or the light-emitting device 41 described above.
The lighting device according to the third embodiment is provided, for example, in a lighting device provided in a moving body such as an automobile, a lighting device provided in a building such as a house, a lighting device provided in an outdoor facility, a reading lamp, or the like. The lighting device can be made.

  For example, when the lighting device according to the third embodiment is provided in an automobile window or the like, external light can be taken in during the daytime, and it can be used as a lighting device when it is desired to brighten the interior at night or the like. it can. Therefore, luminance unevenness and power loss can be reduced, and external light can be used, thereby saving energy. Moreover, since it can be integrated with the window of an automobile, it can be excellent in terms of design and space.

  As mentioned above, although several embodiment of this invention was illustrated, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, changes, and the like can be made without departing from the spirit 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 equivalents thereof. Further, the above-described embodiments can be implemented in combination with each other.

  DESCRIPTION OF SYMBOLS 1 Light-emitting device, 2 board | substrates, 3 board | substrates, 4 sealing part, 10 light emission part, 11 reflection part, 12 electrodes, 13 organic light emission part, 14 electrodes, 15 insulation part, 16 electrodes, 20 transmissive part, 41 light-emitting device, 50 Light emitting part, 51 electrode, 52 electrode, 53 Organic light emitting part, 54 electrode, 55 Insulating part, 56 electrode

Claims (3)

A light-emitting device having a top emission structure and comprising: a light-emitting unit that emits light; and a transmission unit that transmits light incident from the outside;
The light emitting unit
A first reflective portion extending in a first direction and having conductivity;
A first electrode provided on the first reflecting portion and having conductivity and light transmission;
A first insulating portion provided so as to cover the first reflecting portion and the first electrode, and having an insulating property and a light transmitting property;
A first organic light emitting part provided on the first insulating part and electrically connected to the first electrode;
A second electrode provided on the first organic light emitting part and having conductivity and light transmission;
A conductive third electrode provided on the second electrode;
Comprising
The light emitting device, wherein the third electrode has an electric resistance lower than that of the second electrode, and has a linear form extending in a second direction intersecting the first direction. A light-emitting device having a top emission structure and comprising: a light-emitting unit that emits light; and a transmission unit that transmits light incident from the outside;
The light emitting unit
A fourth electrode having electrical conductivity and light transmission;
A fifth electrode provided on the fourth electrode and having reflectivity and conductivity;
A second insulating portion provided so as to cover the fourth electrode and the fifth electrode and having insulating properties and light transmission properties;
A second organic light emitting unit provided on the second insulating unit and electrically connected to the fifth electrode;
A sixth electrode provided on the second insulating portion, having conductivity, and spaced apart from the second organic light emitting portion;
A seventh electrode provided so as to cover the second organic light emitting unit and the sixth electrode, and having conductivity and light transmission;
Comprising
The sixth electrode has an electric resistance lower than that of the seventh electrode, and is provided at a position different from the fifth electrode in plan view.
A light-emitting device in which a region between the sixth electrode and the fifth electrode in a plan view is the transmission portion.   A lighting device comprising the light emitting device according to claim 1.

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