JP2016001665A - Lighting device and lighting system - Google Patents

Abstract

An illumination device and an illumination system capable of increasing the area ratio of a light emitting region are provided.
An illumination device according to an embodiment includes first and second substrates, a sealing unit, an element unit, a moisture absorption unit, and a first light shielding unit. The first substrate has a first surface and a second surface facing the first surface, the first surface has first and second regions, and the second surface is a third surface facing the first region. A region and a fourth region opposite to the second region. The second substrate has a third surface facing the first surface and a fourth surface facing the third surface, the fourth surface facing the fifth region facing the first region and the second region facing the second region. 6 regions. The element unit includes a first electrode on the first and second regions, a second electrode between the first electrode and the second substrate, and an organic layer between the first and second electrodes. The hygroscopic part is provided between the second and sixth regions and does not face the fifth region. The first light shielding portion faces the sixth region and does not face the fifth region.
[Selection] Figure 1

Description

  Embodiments described herein relate generally to a lighting device and a lighting system.

  There is an illumination device that uses, as a light source, an organic electroluminescent element that includes a light-transmissive first electrode, a second electrode, and an organic layer provided between the first electrode and the second electrode. There is an illumination system that includes a plurality of illumination devices and a control unit that controls light emission and non-emission of the plurality of illumination devices. In an illuminating device using an organic electroluminescent element, light transmission is performed by using a thin wire-like second electrode provided with a plurality of openings or a light-transmissive second electrode. . In such a lighting device, it is desirable to increase the area ratio of the light emitting region to the area of the entire device.

JP 2011-249541 A

  Embodiments of the present invention provide an illumination device and an illumination system that can increase the area ratio of a light emitting region.

  According to the embodiment of the present invention, an illuminating device including a first substrate, a second substrate, a sealing portion, an element portion, a moisture absorption portion, and a first light shielding portion is provided. The first substrate is light transmissive. The first substrate has a first surface and a second surface facing the first surface, the first surface has a first region and a second region, and the second surface is the first surface. A third region facing the region and a fourth region facing the second region. The second substrate is light transmissive. The second substrate has a third surface facing the first surface and a fourth surface facing the third surface, and the fourth surface is a fifth region facing the first region and the fourth surface. And a sixth region facing the two regions. The sealing portion is provided between the first substrate and the second substrate. The element portion is provided in a space surrounded by the first substrate, the second substrate, and the sealing portion. The element portion includes a light transmissive first electrode provided on the first region and the second region, and the first electrode on the first region and the second region. A second electrode provided between the second substrate and including a light transmissive portion; and an organic layer provided between the first electrode and the second electrode. The hygroscopic part is provided between the second region and the sixth region, and does not face the fifth region. The first light shielding portion faces the sixth region and does not face the fifth region.

Fig.1 (a) and FIG.1 (b) are the schematic diagrams showing the illuminating device which concerns on 1st Embodiment. FIG. 2A and FIG. 2B are schematic views showing a part of the illumination device according to the first embodiment. FIG. 3 is a plan view schematically showing a part of another illumination device according to the first embodiment. FIG. 4A and FIG. 4B are cross-sectional views schematically illustrating another illumination device according to the first embodiment. FIG. 5A and FIG. 5B are cross-sectional views schematically illustrating another illumination device according to the first embodiment. It is sectional drawing which represents typically another illuminating device which concerns on 1st Embodiment. It is sectional drawing which represents typically another illuminating device which concerns on 1st Embodiment. FIG. 8A and FIG. 8B are schematic views illustrating another illumination device according to the first embodiment. FIG. 9A and FIG. 9B are cross-sectional views schematically illustrating another illumination device according to the first embodiment. FIG. 10A to FIG. 10E are plan views schematically illustrating a part of another illumination device according to the first embodiment. It is sectional drawing which represents typically a part of another illuminating device which concerns on 1st Embodiment. FIGS. 12A and 12B are cross-sectional views schematically illustrating another illumination device according to the first embodiment. It is a schematic diagram showing another illuminating device which concerns on 1st Embodiment. Fig.14 (a)-FIG.14 (c) are the schematic diagrams showing the illumination system which concerns on 2nd Embodiment.

Each embodiment 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 (a) and FIG.1 (b) are the schematic diagrams showing the illuminating device which concerns on 1st Embodiment.
FIG. 1A is a schematic cross-sectional view of the lighting device 110, and FIG. 1B is a schematic plan view of the lighting device 110. FIG. 1A schematically shows a cross section taken along line A1-A2 of FIG.

  As illustrated in FIG. 1A and FIG. 1B, the lighting device 110 includes a first substrate 51, a second substrate 52, an element unit 54, a moisture absorption unit 56, and a first light shielding unit 61. ,including. In FIG. 1B, illustration of the second substrate 52, the element portion 54, and the like is omitted for convenience.

  The first substrate 51 is light transmissive. For example, the first substrate 51 is transparent. The second substrate 52 is aligned with the first substrate 51 in the first direction. In other words, the second substrate 52 faces the first substrate 51. The second substrate 52 is light transmissive. For example, the second substrate 52 is transparent.

  The first substrate 51 has a first surface S1 and a second surface S2 facing the first surface S1. In other words, the second surface S2 is a surface facing the opposite side to the first surface S1. The first surface S1 has a first region R1 and a second region R2. The second surface S2 includes a third region R3 that faces the first region R1 and a fourth region S4 that faces the second region S2.

  The second substrate 52 has a third surface S3 that faces the first surface S1, and a fourth surface S4 that faces the third surface S3. In other words, the fourth surface S4 is a surface facing away from the third surface S3. The fourth surface S4 includes a fifth region R5 that faces the first region R1 and a sixth region R6 that faces the second region R2.

  A sealing portion 58 is provided between the first substrate 51 and the second substrate 52. For example, the sealing unit 58 bonds the second substrate 52 to the first substrate 51. For example, the sealing unit 58 may weld the second substrate 52 to the first substrate 51.

  The second region R2 is, for example, along the outer edge of the first region R1. The second region R2 is, for example, along a part of the outer edge of the first region R1. That is, the second region R2 is along at least a part of the outer edge of the first region R1. For example, the fourth region R4 extends along at least a part of the outer edge of the third region R3. For example, the sixth region R6 extends along at least a part of the outer edge of the fifth region R5. In this example, the second region R2 surrounds the first region R1. The fourth region R4 surrounds the third region R3. The sixth region R6 surrounds the fifth region R5.

  Here, a direction parallel to the first direction in which the first substrate 51 and the second substrate 52 are arranged is defined as a Z-axis direction. One direction perpendicular to the Z-axis direction is taken 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 Z-axis direction corresponds to the thickness direction of the first substrate 51 and the second substrate 52.

  The element unit 54 is provided in a space surrounded by the first substrate 51, the second substrate 52, and the sealing unit 58. The element portion 54 is sealed by the first substrate 51, the second substrate 52, and the sealing portion 58. The second substrate 52 is provided with a recess in the third surface S3 facing the first substrate 51. The recess is formed in a shape that can accommodate the element portion 54. The second substrate 52 forms a space for sealing the element portion 54 by the recess. For example, the second substrate 52 is bonded to the first substrate 51 via the sealing portion 58. The sealing portion 58 is applied in an annular shape so as to surround the recess on the surface of the second substrate 52 facing the first substrate 51. As a result, the element portion 54 is sealed by the first substrate 51, the second substrate 52, and the sealing portion 58.

  The recess may be provided in the first substrate 51. Note that the concave portion is not necessarily provided. That is, both the first substrate 51 and the second substrate 52 may be flat. In the case where no recess is provided, for example, a plurality of spacers are dispersed in the sealing portion 58. Thus, a plurality of spacers may be provided between the first substrate 51 and the second substrate 52, and a space for sealing the element portion 54 may be formed by each spacer.

  The element unit 54 includes the first electrode 10, the second electrode 20, and the organic layer 30. The first electrode 10 is light transmissive. The first electrode 10 is, for example, a transparent electrode. The first electrode 10 is provided on the first region R1 and the second region R2.

  The second electrode 20 is provided between the organic layer 30 and the second substrate 52. The second electrode 20 includes a portion through which light can be transmitted. The second electrode 20 is provided between the first electrode 10 and the second substrate 52 on the first region R1 and the second region R2. The second electrode 20 has a conductive portion 20a and an opening 20b. In this example, the second electrode 20 includes a conductive portion 20a and a plurality of openings 20b. The second electrode 20 allows light to pass through the plurality of openings 20b. The opening 20b exposes a part of the organic layer 30. In this example, the second electrode 20 includes a plurality of conductive portions 20a. Each of the plurality of conductive portions 20a extends in a second direction that intersects the first direction (Z-axis direction), and is arranged in a third direction that 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 arranged in the X-axis direction. That is, in this example, the second direction is the Y-axis direction, and the third direction is the X-axis direction. The second direction is not limited to the Y-axis direction, and may be any direction that intersects the first direction. The third direction is not limited to the X-axis direction, and may be any direction that intersects the first direction and the second direction.

  Each of the plurality of openings 20b is disposed between each of the plurality of conductive portions 20a. Each of the plurality of openings 20b has a groove shape extending in the Y-axis direction, for example. That is, in this example, the second electrode 20 has a stripe shape.

  Each conductive part 20a of the second electrode 20 has light reflectivity, for example. The light reflectance of each conductive portion 20 a 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. In this case, each opening 20b is a portion through which light can be transmitted. Each conductive portion 20a may be light transmissive. The second electrode 20 may be light reflective or light transmissive.

  The organic layer 30 is provided between the first electrode 10 and the second substrate 52. The organic layer 30 is provided between the first electrode 10 and the second electrode 20. The organic layer 30 includes an organic light emitting layer. The organic layer 30 has light transmittance, for example. For example, the organic layer 30 has optical transparency in a non-light emitting state.

  In this example, the element unit 54 further includes an insulating layer 40. The insulating layer 40 is provided between the first electrode 10 and the organic layer 30. That is, the insulating layer 40 is provided on the first electrode 10. The organic layer 30 is provided on the insulating layer 40. The insulating layer 40 includes, for example, an insulating part 40a and an opening 40b. The opening 40b exposes a part of the first electrode 10. The opening 40b is disposed at a position overlapping the conductive portion 20a of the second electrode 20 when projected onto the XY plane (a plane perpendicular to the Z-axis direction). In other words, the opening 40b is disposed at a position overlapping the conductive portion 20a when viewed in the Z-axis direction. The insulating layer 40 is light transmissive. The insulating layer 40 is transparent, for example.

  In this example, the insulating layer 40 includes a plurality of openings 40b. Each of the plurality of openings 40b extends in the Y-axis direction and is arranged in the X-axis direction. Each of the plurality of openings 40b has, for example, a groove shape. The insulating layer 40 has a stripe shape, for example. In this example, a plurality of portions of the first electrode 10 are exposed by each of the plurality of openings 40b. Below, the part exposed by the opening part 40b of the 1st electrode 10 is called the exposed part 10p.

  In this example, each of the plurality of conductive portions 20a overlaps one of the plurality of openings 40b when projected onto the XY plane. In this example, each of the plurality of conductive portions 20a overlaps each of the plurality of openings 40b when projected onto the XY plane. For example, when projected onto the XY plane, at least one opening 40b may be disposed between each of the plurality of conductive portions 20a.

  The organic layer 30 includes a first portion 30a that overlaps the opening 40b of the insulating layer 40 and a second portion 30b that overlaps the insulating portion 40a when projected onto the XY plane. For example, the organic layer 30 is continuously provided on the insulating portion 40a and on each of the plurality of exposed portions 10p. Thus, at least a part of the organic layer 30 is provided in the opening 40 b on the first electrode 10. At least a part of the second electrode 20 is provided on at least a part of the organic layer 30 provided in the opening 40b.

  Note that the organic layer 30 may not overlap with the insulating portion 40a. That is, the organic layer 30 may be provided only in the opening 40 b of the insulating layer 40.

  The thickness of the organic layer 30 (length along the Z-axis direction) is thinner than the thickness of the insulating layer 40 (insulating portion 40a). The interface of the first portion 30a of the organic layer 30 with the first electrode 10 (the lower surface of the first portion 30a) and the interface of the first portion 30a with the second electrode 20 (the upper surface of the first portion 30a) in the Z-axis direction. The distance is shorter than the distance in the Z-axis direction between the end portion in the Z-axis direction of the insulating portion 40 a of the insulating layer 40 and the first electrode 10. That is, the interface between the first portion 30a and the second electrode 20 (upper surface of the first portion 30a) is lower than the end portion (upper surface of the insulating portion 40a) of the insulating portion 40a opposite to the first electrode 10 side. To position. Thereby, for example, the organic layer 30 can be prevented from being damaged when the second electrode 20 is formed.

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

  The organic layer 30 is electrically connected to the second electrode 20. For example, the organic layer 30 is in contact with each of the plurality of conductive portions 20a. Thereby, the organic 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 layer 30 using the first electrode 10 and the second electrode 20. Thereby, the organic layer 30 emits light. For example, when a current flows, the organic layer 30 recombines electrons and holes to generate excitons. The organic layer 30 emits light using, for example, the emission of light when the exciton is radiation-deactivated.

  In the illumination device 110, a portion between the exposed portion 10p and the conductive portion 20a in the organic layer 30 serves as the light emitting portion EU. In this example, the organic layer 30 includes a plurality of light emitting units EU between the plurality of exposed portions 10p and the plurality of conductive portions 20a. The light emission EL emitted from the light emitting unit EU is emitted to the outside of the illumination device 110 via 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 layer 30 and the first electrode 10. That is, the illumination device 110 is a single-sided light emission type.

  In the illumination device 110, external light OL incident from the outside is a portion of the first electrode 10, the organic layer 30, the insulating layer 40, the first substrate 51, and the second substrate 52 between the plurality of conductive portions 20 a. Transparent. As described above, the illumination device 110 transmits the external light OL incident on the illumination device 110 from the outside while emitting the light emission EL. Thus, the illuminating device 110 has light transmittance. Thereby, in the illuminating device 110, the background image can be visually recognized through the illuminating device 110. That is, the illumination device 110 is a thin-film or plate-like light source that can be seen through.

  Thus, according to the illumination device 110, a light transmissive illumination device can be provided. In the case of the illumination device 110, various new applications are possible by the function of transmitting the background image in addition to the illumination function.

  The element unit 54 includes a light emitting area EA from which light is emitted from the organic layer 30 and an outer edge area OA around the light emitting area EA when projected onto the XY plane. In this example, the light emitting area EA is a rectangular area in which the light emitting units EU are arranged. The outer edge area OA is an annular area surrounding the light emitting area EA. In other words, the outer edge area OA is a non-light emitting area. The outer edge area OA does not necessarily need to surround the light emitting area EA. The outer edge area OA may have an arbitrary shape along the outer edge of the light emitting area EA. For example, the element unit 54 may include a plurality of outer edge areas OA arranged along the outer edge of the light emitting area EA. The light emitting area EA includes a first light emitting area E1 and a second light emitting area E2 between the first light emitting area E1 and the outer edge area OA when projected onto the XY plane. For example, the first light emitting region E1 overlaps the first region R1, the third region R3, and the fifth region R5 when projected onto the XY plane.

  In this example, the first electrode 10 is continuous in two adjacent light emitting units EU. The first electrode 10 included in one of the two adjacent light emitting units EU is continuous with the first electrode 10 included in the other of the two adjacent light emitting units EU.

  Similarly, the organic layer 30 is continuous in two adjacent light emitting units EU. In this example, the organic layer 30 formed in common in two adjacent light emitting units EU is used. The material of the organic layer 30 included in one of the two adjacent light emitting units EU is substantially the same as the material of the organic layer 30 included in the other of the two adjacent light emitting units EU. Accordingly, the wavelength of the light emission EL emitted from one of the two adjacent light emitting units EU is substantially the same as the wavelength of the light emission EL emitted from the other of the two adjacent light emitting units EU. For example, the peak wavelength of one light emission EL is 0.8 to 1.2 times the peak wavelength of the other light emission EL. In other words, the color of the light emitting EL emitted from one of the two adjacent light emitting units EU is substantially the same as the color of the light emitting EL emitted from the other of the two adjacent light emitting units EU.

  The conductive portions 20a of the second electrode 20 are electrically connected to each other via a conductive member without using a switching element or the like. Thereby, each conductive part 20a is set to a substantially constant potential. Therefore, in the illumination device 110, by applying only one type of voltage between the first electrode 10 and the second electrode 20, a light emission EL having a substantially constant light amount is emitted from each of the light emitting units EU. . In the illumination device 110, a light emission EL having a substantially constant color and light amount is emitted from each of the light emitting units EU. In the illumination device 110, for example, light of substantially uniform color and light amount is emitted over the entire surface of the light emitting area EA. The material of the conductive member that electrically connects each conductive portion 20a may be different from or the same as the material of the conductive portion 20a. That is, each of the conductive portions 20a may be continuous.

  Note that the first electrode 10 and the organic layer 30 do not necessarily have to be continuous in two adjacent light emitting units EU. For example, even when they are not continuous, the first electrode 10 and the organic layer 30 are formed in common in the two adjacent light emitting units EU by patterning or the like.

  The moisture absorption part 56 is provided between the element part 54 and the second substrate 52. The moisture absorption part 56 is provided between the second region R2 and the sixth region R6. The moisture absorption part 56 does not oppose 5th area | region R5. The moisture absorption part 56 opposes a part of 6th area | region R6, for example. For example, when the moisture absorbing portion 56 is projected onto an XY plane (a surface parallel to the first surface S1), the moisture absorbing portion 56 overlaps a part of the sixth region R6 and does not overlap the fifth region R5. The moisture absorption part 56 opposes the electroconductive part 20a of the 2nd electrode 20 provided in a part of 6th area | region R6, for example. In the sixth region R <b> 6, the hygroscopic part 56 includes, for example, the first electrode 10, the organic layer 30 provided in the opening 40 b of the insulating layer 40, and the second electrode 20 provided on the organic layer 30. , Opposite to the laminated part.

  The moisture absorption part 56 is attached to 3rd surface S3 facing the 1st board | substrate 51 of the 2nd board | substrate 52, for example. The moisture absorption part 56 is provided in the bottom face of the recessed part of the 2nd board | substrate 52, for example. The moisture absorption part 56 overlaps at least a part of the outer edge area OA and at least a part of the second light emitting area E2 when projected onto the XY plane. That is, the hygroscopic part 56 is disposed in the vicinity of the outer edge of the element part 54. And the moisture absorption part 56 does not overlap with the 1st light emission area | region E1, when it projects on an XY plane. The moisture absorption part 56 is opaque, for example. In the portion of the light emitting area EA that does not overlap the hygroscopic portion 56 (first light emitting area E1), the external light OL is transmitted. The moisture absorption part 56 may be transparent, for example.

The moisture absorption part 56 has a hygroscopic property. The moisture absorption part 56 adsorbs moisture (water molecules), for example. The moisture adsorption by the moisture absorption part 56 may be physical adsorption or chemical adsorption. The moisture absorption part 56 may further have oxygen adsorption property, for example. The moisture absorption part 56 dries the space sealed with the 1st board | substrate 51, the 2nd board | substrate 52, and the sealing part 58, for example. Thereby, the moisture absorption part 56 protects the element part 54 from a water | moisture content. The moisture absorption part 56 suppresses deterioration of the element part 54, for example. The moisture absorption part 56 suppresses the fall of the storage life of the illuminating device 110, for example. In other words, the moisture absorption part 56 is a desiccant. The moisture absorption part 56 performs so-called hollow sealing. The sealed space is, for example, an air layer. For example, an inert gas such as N ₂ or Ar may be filled in the space.

  In this example, the six moisture absorption parts 56 are annularly arranged along the outer edge of the light emitting area EA. In this example, the shape of each moisture absorption part 56 is linear. The shape and number of the hygroscopic portions 56 are not limited to the above and may be arbitrary. For example, the hygroscopic portion 56 may be a single member formed in an annular shape.

  The second substrate 52 is provided between the first substrate 51 and the first light shielding unit 61. That is, the first light shielding portion 61 is provided on the surface of the second substrate 52 opposite to the surface facing the first substrate 51. That is, the first light shielding unit 61 is provided on the fourth surface S4 of the second substrate 52. A part of the first light shielding part 61 overlaps the moisture absorption part 56 when projected onto the XY plane. At least a part of the first light shielding portion 61 faces the sixth region R6. The first light shielding portion 61 does not face the fifth region R5. The first light shielding portion 61 does not face the third region R3. In other words, the first light shield 61 overlaps the sixth region R6 and does not overlap the fifth region R5 when projected onto the XY plane. The first light shielding unit 61 may face the entire sixth region R6.

  In the case where a plurality of moisture absorbing parts 56 are provided, the first light shielding part 61 overlaps each of the plurality of moisture absorbing parts 56 when projected onto, for example, an XY plane. For example, a plurality of first light shielding portions 61 may be provided, and when projected onto the XY plane, each of the plurality of first light shielding portions 61 may overlap with each of the plurality of moisture absorbing portions 56.

  Further, the first light shielding portion 61 does not overlap the first light emitting region E1 when projected onto the XY plane. In other words, the first light shield 61 exposes a part of the light emitting area EA when projected onto the XY plane. Thereby, when viewed from the second substrate 52 side, the first light shielding portion 61 covers the moisture absorbing portion 56 and transmits light in a portion that does not overlap the light emitting area EA. As described above, in the illumination device 110, the portion of the element portion 54 that does not overlap the first light shielding portion 61 when projected onto the XY plane is the light transmission region PA. That is, the first light emitting area E1 becomes the transmission area PA. The first region R1, the third region R3, and the fifth region R5 are transmissive regions PA.

  The first light shield 61 is, for example, an annular shape along the outer edge of the light emitting area EA. In other words, the first light shielding portion 61 has a frame shape. The shape of the first light shielding portion 61 is not limited to this, and may be any shape according to the shape of the light emitting area EA and the shape of the moisture absorbing portion 56.

  In this example, the illumination device 110 further includes a second light shielding unit 62 and a third light shielding unit 63. The first substrate 51 is provided between the second substrate 52 and the second light shielding part 62. That is, the second light shielding unit 62 is provided on the surface of the first substrate 51 opposite to the surface facing the second substrate 52. In other words, the second light shielding part 62 is provided under the first substrate 51.

  The second light shielding part 62 faces the fourth region R4 and does not face the third region R3. At least a part of the moisture absorbing portion 56 does not face the second light shielding portion 62. The second light shielding part 62 overlaps at least a part of the outer edge area OA and does not overlap at least a part of the moisture absorption part 56 when projected onto the XY plane. In this example, the second light shielding part 62 overlaps a part of the moisture absorbing part 56 when projected onto the XY plane. The second light shielding unit 62 may not overlap the moisture absorption unit 56 when projected onto the XY plane.

  Further, the second light shielding part 62 does not overlap the first light emitting region E1 when projected onto the XY plane. For example, the second light shielding unit 62 does not overlap the light emitting area EA when projected onto the XY plane. For example, the second light shielding unit 62 may overlap a part of the second light emitting region E2 when projected onto the XY plane.

  The second light shielding part 62 is, for example, an annular shape along the outer edge of the light emitting area EA. In other words, the second light shielding part 62 has a frame shape. The shape of the second light shielding portion 62 is not limited to this, and may be any shape according to the shape of the light emitting area EA and the shape of the moisture absorbing portion 56.

  The third light shielding unit 63 is provided at a position that does not overlap the first substrate 51 and the second substrate 52 when projected onto the XY plane. That is, the third light shielding unit 63 is provided outside the first substrate 51 and the second substrate 52. The third light shielding part 63 connects the first light shielding part 61 and the second light shielding part 62. One end of the third light shielding part 63 is connected to one end of the first light shielding part 61, and the other end of the third light shielding part 63 is connected to the other end of the first light shielding part 61. In this example, the first light shielding part 61 is continuous with the second light shielding part 62 via the third light shielding part 63.

  The third light shielding unit 63 surrounds the first substrate 51, the second substrate 52, and the element unit 54 around an axis with the Z-axis direction as an axis. The third light shielding portion 63 faces each of the side surface of the first substrate 51, the side surface of the second substrate 52, and the side surface of the element unit 54. Thereby, the 3rd light-shielding part 63 suppresses the light which leaks from the element part 54 to the side (direction parallel to an XY plane).

  For each of the light shielding portions 61 to 63, for example, a metal material such as aluminum or stainless steel is used. Each light shielding part 61-63 is light reflective, for example. Alternatively, for example, a resin material is used for each of the light shielding portions 61 to 63. Each light-shielding part 61-63 is a housing surrounding the outer periphery of the 1st board | substrate 51, the 2nd board | substrate 52, and the element part 54, for example. In addition, the 2nd light shielding part 62 and the 3rd light shielding part 63 are provided as needed, and can be abbreviate | omitted.

  For example, when an opaque moisture absorbing part is used in a light transmissive lighting device, the moisture absorbing part is visually recognized, and the design of the lighting device is deteriorated. Even when a transparent hygroscopic part is used, the hygroscopic part may be visually recognized due to a change in the traveling direction of light accompanying a difference in refractive index.

  For this reason, in the lighting device, the hygroscopic part is disposed so as to overlap the outer edge region of the element part, and the hygroscopic part is covered with a casing or the like on both the first substrate side and the second substrate side. However, in the configuration in which the hygroscopic part is covered with both surfaces in this way, the area ratio of the light emitting region is reduced with respect to the outer area when projected onto the XY plane of the lighting device.

  On the other hand, in the illuminating device 110 according to the present embodiment, moisture is absorbed between the element portion 54 and the second substrate 52 so as to overlap a part of the second light emitting region E2 when projected onto the XY plane. A portion 56 is provided. And in the illuminating device 110, the moisture absorption part 56 is covered with the 1st light-shielding part 61 in the 2nd board | substrate 52 side in which the moisture absorption part 56 is arrange | positioned, and the light emission area EA is formed in the 1st board | substrate 51 side which is a light emission side. Do not cover.

  Thereby, for example, the area ratio of the light emitting area EA can be increased while the area ratio of the transmissive area PA is secured to the same extent as when covering both surfaces. For example, when covering both surfaces, the area of the light emitting area EA is substantially the same as the area of the transmissive area PA. On the other hand, in the illumination device 110 according to the present embodiment, the area of the light emitting area EA can be made larger than the area of the transmissive area PA. Further, at the time of light emission, the moisture absorbing portion 56 becomes difficult to see due to the light shutter effect. Accordingly, it is possible to suppress a decrease in design of the lighting device 110. Moreover, in the illuminating device 110, the opaque moisture absorption part 56 can also be used and the fall of the material selectivity of the moisture absorption part 56 can also be suppressed.

  The first light shielding portion 61 has a facing surface 61 a that faces the second substrate 51. In the illumination device 110, the peak wavelength (frequency) of the light reflected from the facing surface 61 a is set to be 0.8 times or more and 1.2 times or less than the peak wavelength of the light reflected by the moisture absorption unit 56. That is, the color of the facing surface 61 a is made substantially the same as the color of the moisture absorption part 56. Thereby, the moisture absorption part 56 can be made inconspicuous also at the time of non-light emission. It is possible to further suppress a decrease in design of the lighting device 110.

  Further, the light reflectance of the facing surface 61a may be 0.8 times or more and 1.2 times or less than the light reflectance of the moisture absorbing portion 56. That is, the reflectance of the facing surface 61a may be substantially the same as the reflectance of the moisture absorbing portion 56. Also in this case, the moisture absorption part 56 can be made inconspicuous at the time of non-light emission.

  Further, the light reflectance of the facing surface 61a may be 20% or less. For example, if the reflectance of the facing surface 61a is high, a part of the light emitted from the organic layer 30 is reflected by the facing surface 61a, and there is a concern that the luminance uniformity in the light emitting area EA may be reduced. . Therefore, the reflectance of the opposing surface 61a is lowered. Thereby, the uniformity of the brightness | luminance in light emission area | region EA (light emission surface) can be improved.

  For example, the black moisture absorption part 56 is used, and a black paint or the like is applied to the facing surface 61a. Thereby, the visibility of the moisture absorption part 56 at the time of non-light emission can be suppressed and the uniformity of the brightness | luminance in a light emission surface can be improved, for example. For example, the light reflectance of the facing surface 61a and the light reflectance of the moisture absorbing portion 56 may be 20% or less.

FIG. 2A and FIG. 2B are schematic views showing a part of the illumination device according to the first embodiment.
FIG. 2A is a schematic cross-sectional view showing a part of the lighting device 110, and FIG. 2B is a schematic plan view showing a part of the lighting device 110.
As shown in FIG. 2A, the organic layer 30 includes a first layer 31. The organic layer 30 can 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)), etc. The first layer 31 is not limited to these materials.

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, and the second layer 32 is not limited to these materials.

  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, Alq3 (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. The third layer 33 is not limited to these materials.

  For example, the light emitted from the organic layer 30 is substantially white light. That is, the light emitted from the illumination device 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 color temperature of the light emitted from the organic layer 30 is, for example, 2600K or more and 7000K or less.

  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 first electrode 10 is not limited to these materials.

  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. The second electrode 20 is not limited to these materials.

  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 thickness (length in the Z-axis direction) of the first electrode 10 is, for example, not less than 10 nm and not more than 500 nm. More preferably, it is 50 nm or more and 200 nm or less. The thickness of the organic layer 30 is, for example, not less than 10 nm and not more than 500 nm. The thickness of the second electrode 20 is, for example, not less than 10 nm and not more than 300 nm.

  For the first substrate 51 and the second substrate 52, for example, glass or a resin material is used. For the first substrate 51 and the second substrate 52, for example, a material having optical transparency and flexibility such as polyimide, PET, and PEN may be used.

  The moisture absorption part 56 contains a hygroscopic material and a resin material (binder), for example. The moisture absorption part 56 may further have oxygen adsorption property, for example.

  Examples of hygroscopic materials include calcium oxide, barium oxide, strontium oxide, magnesium oxide, calcium sulfate, calcium chloride, lithium chloride, calcium bromide, potassium carbonate, copper sulfate, sodium sulfate, zinc chloride, zinc bromide, and chloride. Cobalt, diphosphorus pentoxide, silica gel, aluminum oxide, zeolite, organometallic complex and the like are used. The hygroscopic material is dispersed in a resin material, for example.

  The resin material has, for example, photocurability or thermosetting. Examples of thermosetting resins include epoxy resins, acrylic resins, mixtures of epoxy resins and acrylic resins, oxetane compounds, curable resins of epoxy resins and oxetane compounds, and curable resins of acrylic resins and oxetane compounds. Used. As the photocurable resin, for example, a room temperature curable resin mainly composed of an epoxy resin is used. Examples of such room temperature curing resins include amine-based curing agents, imidazole-based curing accelerators, amine adduct-type curing accelerators, phosphorus-based curing accelerators, organometallic complexes, and polyamine ureates (such as urea-modified polyamines). Is mentioned.

For the insulating layer 40, for example, an organic insulating material such as polyimide resin, acrylic resin, polyvinylphenol (PVP), PMMA, or fluorine resin is used. The insulating layer 40 includes, for example, a silicon oxide film (for example, SiO ₂ ), a silicon nitride film (for example, SiN), a silicon oxynitride film (for example, SiON), magnesium fluoride (MgF ₂ ), lithium fluoride (LiF), An inorganic insulating material such as aluminum fluoride (AlF ₃ ), aluminum oxide (Al ₂ O ₃ ), molybdenum oxide (MoOx), or calcium fluoride (CaF) may be used. The insulating layer 40 is not limited to these materials.

  As shown in FIG. 2B, the width Wt (length in the X-axis direction) of the conductive portion 20a is, for example, 1 μm or more and 500 μm or less. The pitch Pt1 of the plurality of conductive portions 20a is, for example, not less than 2 μm and not more than 2000 μm. More preferably, they are 2 micrometers or more and 1000 micrometers or less. The pitch Pt1 is, for example, the distance in the X-axis direction between the centers in the X-axis direction of two adjacent conductive portions 20a. The width of the portion extending in the Y-axis direction of the insulating portion 40a is, for example, not less than 1 μm and not more than 1500 μm. The pitch Pt2 of the portion extending in the Y-axis direction of the insulating portion 40a is, for example, 2 μm or more and 2000 μm or less.

FIG. 3 is a plan view schematically showing a part of another illumination device according to the first embodiment.
As illustrated in FIG. 3, in this example, the plurality of openings 20b of the second electrode 20 are arranged in the X-axis direction and in the Y-axis direction. That is, in this example, the plurality of openings 20b are arranged in a two-dimensional matrix. The conductive part 20a has, for example, a lattice shape. Thus, the second electrode 20 (conductive portion 20a) is not limited to a stripe shape, but may be a lattice shape.

  In the grid-like conductive portion 20a, the width Wx of the portion extending in the Y-axis direction and aligned in the X-axis direction is 1 μm or more and 500 μm or less. A pitch Px of portions extending in the Y-axis direction and arranged in the X-axis direction is, for example, 2 μm or more and 2000 μm or less. The width Wy of the portion extending in the X axis direction and arranged in the Y axis direction is 1 μm or more and 500 μm or less. The pitch Py of the portion extending in the X-axis direction and arranged in the Y-axis direction is, for example, 2 μm or more and 2000 μm or less.

FIG. 4A and FIG. 4B are cross-sectional views schematically illustrating another illumination device according to the first embodiment.
As illustrated in FIG. 4A, the third light shielding unit 63 is omitted in the lighting device 112. In the following description, substantially the same functions and configurations as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the illuminating device 110, the 3rd light-shielding part 63 is provided and the light which leaks from the element part 54 to the side is suppressed. On the contrary, the third light-shielding portion 63 may be omitted and the side of the element portion 54 may be opened so that light leaking from the element portion 54 to the side can be used.

  As illustrated in FIG. 4B, the second light shielding unit 62 is further omitted in the illumination device 114. In the illumination device 114 as well, similarly to the illumination device 110, the area ratio of the light emitting region EA can be increased while securing the area ratio of the transmissive region PA to the same level as when covering both surfaces. At the time of light emission, the moisture absorbing portion 56 can be made difficult to see due to the light shutter effect. The visual recognition of the moisture absorption part 56 from the 2nd board | substrate 52 side can be suppressed. As described above, it is sufficient that at least the first light shielding portion 61 is provided, and the second light shielding portion 62 and the third light shielding portion 63 can be omitted.

FIG. 5A and FIG. 5B are cross-sectional views schematically illustrating another illumination device according to the first embodiment.
As shown in FIG. 5A, in the illumination device 116, the first light shielding portion 61 is provided on the support body 61s. Similarly, the second light shielding part 62 is provided on the support body 62s.

  Each support body 61s, 62s has light transmittance. Each support body 61s, 62s is transparent, for example. For each of the supports 61s and 62s, for example, glass or a resin material is used. Each of the supports 61s and 62s may have a plate shape, or a flexible sheet shape or film shape. The outer shape of the support 61s when projected onto the XY plane is substantially the same as the outer shape of the second substrate 52. The outer shape of the support 62s when projected onto the XY plane is substantially the same as the outer shape of the first substrate 51. Each support body 61s, 62s protects each substrate 51, 52, for example.

  In this example, the first light shielding portion 61 is formed by applying a black paint or the like to the support 61s, for example. The second light shielding part 62 is formed, for example, by applying a black paint or the like to the support body 62s. Thus, the 1st light shielding part 61 and the 2nd light shielding part 62 may be formed with a coating material etc. without restricting to a metal material. In this case, the first light shielding unit 61 and the second light shielding unit 62 have, for example, light absorption. The first light shielding part 61 and the second light shielding part 62 may be light reflective or light absorptive.

  When paint is used for the first light shielding part 61 and the second light shielding part 62, the first light shielding part 61 and the second light shielding part 62 may transmit light slightly. That is, the first light shielding part 61 and the second light shielding part 62 may attenuate the intensity of transmitted light. The light transmittance of the first light shielding part 61 and the light transmittance of the second light shielding part 62 are, for example, 10% or less. Thereby, the visual recognition of the moisture absorption part 56 can be suppressed appropriately, for example.

  As shown in FIG. 5B, in the lighting device 118, the support bodies 61s and 62s are omitted. When paint is used for the first light-shielding part 61 and the second light-shielding part 62, the first light-shielding part 61 is formed by directly applying paint or the like to the second substrate 52, as in the lighting device 118. The second light-shielding portion 62 may be formed by directly applying a paint or the like to the surface.

FIG. 6 is a cross-sectional view schematically illustrating another illumination device according to the first embodiment.
As illustrated in FIG. 6, the illumination device 120 further includes an intermediate layer 65 provided between the first light shielding unit 61 and the second substrate 52. For the intermediate layer 65, for example, sponge or rubber is used. In other words, the intermediate layer 65 is a cushioning material. Thereby, for example, it can be suppressed that the first light shielding portion 61 made of metal contacts the second substrate 52 and the second substrate 52 is damaged. For example, the reliability of the lighting device 120 can be improved. For example, another intermediate layer may be further provided between the second light shielding unit 62 and the first substrate 51.

  The color of the intermediate layer 65 is made substantially the same as the color of the hygroscopic portion 56. Thereby, as above-mentioned, the moisture absorption part 56 can be made not conspicuous at the time of non-light emission. For example, the light reflectance of the intermediate layer 65 may be substantially the same as the light reflectance of the moisture absorbing portion 56. The light reflectance of the intermediate layer 65 may be 20% or less.

FIG. 7 is a cross-sectional view schematically illustrating another illumination device according to the first embodiment.
FIG. 8A and FIG. 8B are schematic views illustrating another illumination device according to the first embodiment.
As illustrated in FIG. 7, the illumination device 130 further includes a circuit unit 70 provided between the first light shielding unit 61 and the second substrate 52. The circuit unit 70 is electrically connected to at least one of the first electrode 10 and the second electrode 20. The circuit unit 70 is used, for example, for the wiring of the lighting device 130 and the lighting / extinguishing control of the lighting device 130. The circuit unit 70 may include an electronic circuit such as a switching element, or may include only wiring used for electrical connection between the lighting device 130 and an external device.

  For example, a plurality of circuit units 70 may be provided between the first light shielding unit 61 and the second substrate 52. For example, a circuit unit 70 electrically connected to the first electrode 10 and a circuit unit 70 electrically connected to the second electrode 20 may be provided.

  The circuit unit 70 includes, for example, a first terminal unit 71 and a second terminal unit 72. The first terminal portion 71 is electrically connected to the first electrode 10 through a wiring not shown. The 2nd terminal part 72 is electrically connected with the 2nd electrode 20 via the wiring which abbreviate | omitted illustration. Each terminal part 71 and 72 extends in a direction intersecting the Z-axis direction. In this example, each terminal part 71 and 72 extends in the X-axis direction. A plurality of terminal portions 71 and 72 may be provided. For example, you may further provide each terminal part 71 and 72 extended in a Y-axis direction. Only one of the first terminal portion 71 and the second terminal portion 72 may be provided in the circuit portion 70.

  Each of the terminal portions 71 and 72 is electrically connected to one of the terminal portions 71 and 72 of the adjacent lighting device 130 when the plurality of lighting devices 130 are arranged in a direction parallel to the XY plane. Each terminal part 71 and 72 contacts one of the terminal parts 71 and 72 of the adjacent lighting device 130 when the plurality of lighting devices 130 are arranged in a direction parallel to the XY plane.

  As illustrated in FIGS. 8A and 8B, in this example, when the plurality of lighting devices 130 are arranged in the X-axis direction, the first terminal portion 71 is the second of the adjacent lighting devices 130. It contacts the terminal portion 72 and is electrically connected. That is, in this example, the lighting devices 130 are connected in series only by arranging a plurality of lighting devices 130 in the X-axis direction.

  In this way, in the lighting device 130, each of the lighting devices 130 can be electrically connected by simply arranging the plurality of lighting devices 130. Thereby, the convenience of the illuminating device 130 can be improved, for example. The electrical connection of each lighting device 130 may be a series connection or a parallel connection. For example, a plurality of terminal portions 71 and 72 may be provided, and series connection and parallel connection may be arbitrarily selected depending on the selection of the terminal portions 71 and 72 to be used and the direction in which the lighting devices 130 are arranged.

FIG. 9A and FIG. 9B are cross-sectional views schematically illustrating another illumination device according to the first embodiment.
As shown in FIG. 9A, in the lighting device 132, the first light shielding unit 61 is provided between the second substrate 52 and the circuit unit 70. That is, in the illumination device 132, the circuit unit 70 is provided on the first light shielding unit 61. Thus, the circuit unit 70 may be provided on the first light shielding unit 61.

  As illustrated in FIG. 9B, the lighting device 134 includes a circuit unit 70 (first circuit unit) provided between the first light shielding unit 61 and the second substrate 52, and the first light shielding unit 61. And a circuit unit 70 (second circuit unit) provided above. Thus, the lighting device 134 may include two types of circuit units 70.

FIG. 10A to FIG. 10E are plan views schematically illustrating a part of another illumination device according to the first embodiment.
FIGS. 10A to 10E correspond to the state of FIG.
As illustrated in FIG. 10A, in the lighting device 141, the two moisture absorbing portions 56 are arranged along two opposing sides of the rectangular light emitting area EA.
As shown in FIG. 10B, in the lighting device 142, the three moisture absorbing portions 56 are arranged along two continuous sides of the rectangular light emitting area EA. In other words, the three moisture absorption parts 56 are arrange | positioned at L shape.
As shown in FIG. 10C, in the lighting device 143, one hygroscopic portion 56 is disposed along one side of the rectangular light emitting area EA.
As shown in FIG. 10D, in the lighting device 144, the four moisture absorption portions 56 are arranged at each of the four corners of the rectangular light emitting area EA.
As shown in FIG. 10E, in the lighting device 145, the moisture absorption unit 56 is disposed so as to divide the light emitting area EA when projected onto the XY plane.

  Thus, the moisture absorption part 56 may be arbitrarily arranged in the vicinity of the outer edge of the element part 54. However, there is a high possibility that moisture enters from the sealing portion 58. Therefore, as described with respect to the illumination device 110, the moisture absorption part 56 is arranged in an annular shape along the outer edge of the light emitting area EA. Thereby, the element part 54 can be protected from moisture etc. more appropriately. For example, as shown in the illumination device 145, the moisture absorbing portion 56 that overlaps only a part of the light emitting area EA when projected onto the XY plane may be included. In the illuminating devices 141 to 145, the first light shielding unit 61 may be formed in an annular shape, or may be provided only in a portion that overlaps the moisture absorbing unit 56.

FIG. 11 is a cross-sectional view schematically showing a part of another illumination device according to the first embodiment.
In FIG. 11, only the element part 54 of the illuminating device 150 is shown for convenience. The first substrate 51, the second substrate 52, the moisture absorption unit 56, the first light shielding unit 61, and the like are the same as those in the above embodiments, and thus the description thereof is omitted.

  As shown in FIG. 11, in the lighting device 150, the plurality of organic layers 30 are provided in the element unit 54. For example, each of the plurality of organic layers 30 is disposed at a position overlapping with each of the plurality of conductive portions 20a when projected onto the XY plane. As described above, the organic layer 30 may be provided only in a portion between the first electrode 10 and the conductive portion 20a.

FIGS. 12A and 12B are cross-sectional views schematically illustrating another illumination device according to the first embodiment.
As shown in FIG. 12A, in the lighting device 152, the second electrode 20 does not have the opening 20b. For example, the second electrode 20 is provided on the entire organic layer 30. In this example, the second electrode 20 is light transmissive. For example, the second electrode 20 is transparent. In this case, the entire second electrode 20 is a portion through which light can be transmitted.

  Thereby, in the organic electroluminescent element 152, when a voltage is applied to the organic layer 30 via the first electrode 10 and the second electrode 20, the light emission EL emitted from the light emitting unit EU is transmitted via the first electrode 10. The light is emitted to the outside of the illumination device 152 and is emitted to the outside of the illumination device 152 through the second electrode 20. That is, the illumination device 152 is a double-sided light emission type.

  In the illumination device 152, the element unit 54 further includes a first wiring layer 81. The first wiring layer 81 is provided between the first electrode 10 and the insulating layer 40. For example, the first wiring layer 81 is provided between the first electrode 10 and the organic layer 30. The first wiring layer 81 may be provided under the first electrode 10. That is, the first electrode 10 may be provided between the first wiring layer 81 and the organic layer 30 (insulating layer 40).

  The first wiring layer 81 has an opening 81a and a wiring part 81b. The opening 81a exposes a part of the first electrode 10. The first wiring layer 81 has, for example, a plurality of openings 81a and a plurality of wiring portions 81b. In this example, each of the plurality of openings 81a extends in the Y-axis direction and is arranged in the X-axis direction. The plurality of wiring portions 81b are provided between the plurality of openings 81a. That is, in this example, the first wiring layer 81 has a striped pattern shape. For example, each of the plurality of wiring portions 81b is arranged at a position overlapping with each of the plurality of insulating portions 40a when projected onto the XY plane. Each of the plurality of wiring portions 81b does not necessarily overlap with each of the plurality of insulating portions 40a.

  The first wiring layer 81 is electrically connected to the first electrode 10. For example, the first wiring layer 81 is in contact with the first electrode 10. The conductivity of the first wiring layer 81 is higher than the conductivity of the first electrode 10. The first wiring layer 81 has light reflectivity. The light reflectance of the first wiring layer 81 is higher than the light reflectance of the first electrode 10. The first wiring layer 81 is, for example, a metal wiring. For example, the first wiring layer 81 functions as an auxiliary electrode that transmits a current flowing through the first electrode 10. Thereby, in the illuminating device 152, for example, the amount of current flowing through the first electrode 10 can be made more uniform. For example, the in-plane light emission luminance can be made more uniform.

  For the light transmissive second electrode 20, for example, the materials described for the first electrode 10 can be used. The light transmissive second electrode 20 may be a metal material such as MgAg, for example. In the metal material, the thickness of the second electrode 20 is 5 nm or more and 20 nm or less. Thereby, suitable light transmittance can be obtained.

  The first wiring layer 81 includes, for example, at least one element selected from the group consisting of Mo, Ta, Nb, Al, Ni, and Ti. The first wiring layer 81 can be, for example, a mixed film containing an element selected from this group. The first wiring layer 81 can be a laminated film containing those elements. For the first wiring layer 81, for example, a laminated film of MoNb / AlNd / MoNb can be used. For example, the first wiring layer 81 functions as an auxiliary electrode that suppresses the potential drop of the first electrode 10. The first wiring layer 81 can function as a lead electrode for supplying current. The first wiring layer 81 is not limited to these materials.

  As illustrated in FIG. 12B, in the lighting device 154, the element unit 54 further includes a second wiring layer 82. The second wiring layer 82 is provided on the second electrode 20. For example, the second electrode 20 is provided between the organic layer 30 and the second wiring layer 82. The second wiring layer 82 has an opening 82a and a wiring part 82b. The opening 82a exposes a part of the second electrode 20. The second wiring layer 82 has, for example, a plurality of openings 82a and a plurality of wiring parts 82b. In this example, each of the plurality of openings 82a extends in the Y-axis direction and is arranged in the X-axis direction. The plurality of wiring portions 82b are provided between the plurality of openings 82a. That is, in this example, the second wiring layer 82 has a striped pattern shape. In this example, each of the plurality of wiring portions 82b is disposed at a position that does not overlap with each of the plurality of insulating portions 40a when projected onto the XY plane. Each of the plurality of wiring portions 82b may be disposed at a position overlapping with each of the plurality of insulating portions 40a when projected onto the XY plane, for example.

  The second wiring layer 82 is electrically connected to the second electrode 20. For example, the second wiring layer 82 is in contact with the second electrode 20. The conductivity of the second wiring layer 82 is higher than the conductivity of the second electrode 20. The second wiring layer 82 has light reflectivity. The light reflectance of the second wiring layer 82 is higher than the light reflectance of the second electrode 20. The second wiring layer 82 is, for example, a metal wiring. For example, the second wiring layer 82 functions as an auxiliary electrode that transmits a current flowing through the second electrode 20. Thereby, in the illuminating device 154, the amount of current flowing through the second electrode 20 can be made more uniform, for example. For example, the in-plane light emission luminance can be made more uniform.

  For example, the second wiring layer 82 may be provided between the second electrode 20 and the organic layer 30. The pattern shape of the second wiring layer 82 may be a lattice shape. For the second wiring layer 82, for example, the materials described with respect to the first wiring layer 81 can be used.

FIG. 13 is a schematic diagram illustrating another illumination device according to the first embodiment.
As illustrated in FIG. 13, the illumination device 160 according to the present embodiment further includes a power supply unit 90. The power supply unit 90 is electrically connected to the first electrode 10 and the second electrode 20. The power supply unit 90 supplies current to the organic layer 30 through the first electrode 10 and the second electrode 20. Accordingly, light is emitted from the organic layer 30 by supplying current from the power supply unit 90. The power supply unit 90 may be arranged like the circuit unit 70 described with respect to the lighting devices 132 and 134, for example.

(Second Embodiment)
Fig.14 (a)-FIG.14 (c) are the schematic diagrams showing the illumination system which concerns on 2nd Embodiment.
As illustrated in FIG. 14A, the lighting system 211 according to this embodiment includes a plurality of lighting devices (for example, the lighting device 110) according to the first embodiment, and a control unit 201.

  The control unit 201 is electrically connected to each of the plurality of lighting devices 110 and controls light emission / non-light emission of each of the plurality of lighting devices 110. For example, the control unit 201 is electrically connected to each of the first electrode 10 and the second electrode 20 of the plurality of lighting devices 110. Thereby, the control part 201 controls each light emission / non-light emission of the some illuminating device 110 separately.

  As illustrated in FIG. 14B, in the lighting system 212, each of the plurality of lighting devices 110 is connected in series. The control unit 201 is electrically connected to the first electrode 10 of one lighting device 110 among the plurality of lighting devices 110. And the control part 201 is electrically connected with the 2nd electrode 20 of another one illuminating device 110 among the some illuminating devices 110. FIG. Thereby, the control unit 201 collectively controls light emission / non-light emission of each of the plurality of lighting devices 110. As described above, the control unit 201 may individually control light emission / non-light emission of each of the plurality of lighting devices 110, or may control them collectively.

  As illustrated in FIG. 14C, the lighting system 213 further includes a power supply unit 90. In this example, the lighting system 213 includes a plurality of power supply units 90. Each of the plurality of power supply units 90 is electrically connected to each of the plurality of lighting devices 110.

  In the illumination system 213, the control unit 201 is electrically connected to each of the plurality of power supply units 90. That is, in the illumination system 213, the control unit 201 is electrically connected to each of the plurality of illumination devices 110 via each of the plurality of power supply units 90. For example, the control unit 201 inputs a control signal to each power supply unit 90. Each power supply unit 90 supplies current to the illumination device 110 in accordance with a control signal from the control unit 201, and causes the illumination device 110 to emit light.

  Thus, the control unit 201 may control light emission / non-light emission of the plurality of lighting devices 110 via the power supply unit 90. In this example, a plurality of power supply units 90 are connected to each of the plurality of lighting devices 110. For example, one power supply unit 90 may be connected to each of the plurality of lighting devices 110. For example, one power supply unit 90 may selectively supply current to each of the plurality of lighting devices 110 in accordance with a control signal from the control unit 201. The electrical connection between the control unit 201 and the power supply unit 90 may be wired or wireless. The control signal from the control unit 201 may be input to the power supply unit 90 by wireless communication, for example.

  According to the illumination systems 211 to 213 according to the present embodiment, it is possible to provide an illumination system in which the area ratio of the light emitting region of the illumination device is increased.

  According to the embodiment, an illumination device and an illumination system that can increase the area ratio of the light emitting region 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. It ’s fine. In the specification of the application, the state of “provided on” includes not only the state of being provided in direct contact but also the state of being provided with another element inserted therebetween. The “stacked” state includes not only the state of being stacked in contact with each other but also the state of being stacked with another element inserted therebetween. The “facing” state includes not only the state of directly facing but also the state of facing with another element inserted therebetween. In the specification of the present application, “electrically connected” includes not only the case of being connected in direct contact but also the case of being connected via another conductive member or the like.

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, the first substrate, the second substrate, the element unit, the first electrode, the second electrode, the organic layer, the moisture absorption unit, the first light shielding unit, the second light shielding unit, and the third light shielding unit included in the lighting device and the lighting system. As for the specific configuration of each element such as the intermediate layer, the circuit unit, the power supply unit, and the control unit, those skilled in the art will implement the present invention in the same manner by appropriately selecting from the well-known ranges, and obtain the same effect Is included in the scope of the present invention as long as possible.
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, all lighting devices and lighting systems that can be implemented by those skilled in the art based on the lighting devices and lighting systems described above as the embodiments of the present invention as appropriate include the gist of the present invention. 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, 20 ... 2nd electrode, 30 ... Organic layer, 31 ... 1st layer, 32 ... 2nd layer, 33 ... 3rd layer, 40 ... Insulating layer, 51 ... 1st board | substrate, 52 ... 2nd Substrate, 54 ... element part, 56 ... moisture absorption part, 58 ... sealing part, 61 ... first light shielding part, 62 ... second light shielding part, 63 ... third light shielding part, 65 ... intermediate layer, 70 ... circuit part, 71 ... 1st terminal part, 72 ... 2nd terminal part, 81 ... 1st wiring layer, 82 ... 2nd wiring layer, 90 ... Power supply part, 110, 112, 114, 116, 118, 120, 130, 132, 134, 141-145, 150, 160 ... lighting device 201 ... control unit 211-213 ... control system

Claims (15)

A first substrate that is light transmissive and has a first surface and a second surface opposite to the first surface, the first surface having a first region and a second region, and the second surface. A surface having a third region facing the first region and a fourth region facing the second region;
A light-transmissive second substrate having a third surface facing the first surface and a fourth surface facing the third surface, wherein the fourth surface faces the first region. A second substrate having a fifth region and a sixth region facing the second region;
A sealing portion provided between the first substrate and the second substrate;
An element portion provided in a space surrounded by the first substrate, the second substrate, and the sealing portion;
A light transmissive first electrode provided on the first region and on the second region;
A second electrode provided between the first electrode and the second substrate on the first region and the second region, and including a light transmissive portion;
An organic layer provided between the first electrode and the second electrode;
An element part having
A moisture absorbing portion that is provided between the second region and the sixth region and does not face the fifth region;
A first light-shielding portion facing the sixth region and not facing the fifth region;
A lighting device comprising:   The lighting device according to claim 1, wherein the hygroscopic part faces a part of the first light shielding part. The second region is along at least a portion of an outer edge of the first region;
The fourth region is along at least a part of the outer edge of the third region,
The lighting device according to claim 1, wherein the sixth region is along at least a part of an outer edge of the fifth region. A second light shielding part,
The first substrate is disposed between the second substrate and the second light shielding part,
At least a part of the moisture absorption part does not face the second light shielding part,
The lighting device according to any one of claims 1 to 3, wherein the second light shielding portion faces the fourth region and does not face the third region. The lighting device according to claim 4, further comprising a third light-shielding portion that connects the first light-shielding portion and the second light-shielding portion.   The said 2nd electrode is an illuminating device as described in any one of Claims 1-5 which has an opening part and a light reflective electroconductive part. The second electrode is
A plurality of the conductive portions;
A plurality of openings each provided between each of the plurality of conductive portions;
The lighting device according to claim 6, comprising: The first light-shielding portion has a facing surface facing the second substrate,
The illumination device according to any one of claims 1 to 7, wherein a peak wavelength of the light reflected by the facing surface is not less than 0.8 times and not more than 1.2 times a peak wavelength of the light reflected by the moisture absorbing portion. . The first light-shielding portion has a facing surface facing the second substrate,
The lighting device according to claim 1, wherein the light reflectance of the facing surface is 0.8 times or more and 1.2 times or less than the light reflectance of the moisture absorbing portion. The first light-shielding portion has a facing surface facing the second substrate,
The illumination device according to claim 1, wherein the light reflectance of the facing surface is 20% or less.   The lighting device according to claim 1, further comprising an intermediate layer provided between the first light shielding unit and the second substrate.   12. The device according to claim 1, further comprising a circuit unit provided between the first light shielding unit and the second substrate and electrically connected to at least one of the first electrode and the second electrode. The lighting device according to one.   A circuit unit electrically connected to at least one of the first electrode and the second electrode, wherein the circuit unit is further provided with the first light shielding unit between the second substrate and the circuit unit. The illuminating device according to any one of claims 1 to 12.   The power supply part which is electrically connected to the said 1st electrode and the said 2nd electrode, and further supplies an electric current to the said organic layer through the said 1st electrode and the said 2nd electrode, The any one of Claims 1-13 The illuminating device as described in any one. A plurality of lighting devices,
Each of the plurality of lighting devices is
A first substrate that is light transmissive and has a first surface and a second surface opposite to the first surface, the first surface having a first region and a second region, and the second surface. A surface having a third region facing the first region and a fourth region facing the second region;
A light-transmissive second substrate having a third surface facing the first surface and a fourth surface facing the third surface, wherein the fourth surface faces the first region. A second substrate having a fifth region and a sixth region facing the second region;
A sealing portion provided between the first substrate and the second substrate;
An element portion provided in a space surrounded by the first substrate, the second substrate, and the sealing portion;
A light transmissive first electrode provided on the first region and on the second region;
A second electrode provided between the first electrode and the second substrate and including a light transmissive portion;
An organic layer provided between the first electrode and the second electrode;
An element part having
A moisture absorbing portion that is provided between the second region and the sixth region and does not face the fifth region;
A first light-shielding portion facing the sixth region and not facing the fifth region;
A plurality of lighting devices including:
A controller that is electrically connected to each of the plurality of lighting devices and controls light emission / non-light emission of each of the plurality of lighting devices;
With lighting system.

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