WO2018151026A1

WO2018151026A1 - Light emission device

Info

Publication number: WO2018151026A1
Application number: PCT/JP2018/004521
Authority: WO
Inventors: 吉田　綾子; 健見岡田; 千寛原田; 松川　真; 中馬　隆; 平沢　明
Original assignee: パイオニア株式会社
Priority date: 2017-02-17
Filing date: 2018-02-09
Publication date: 2018-08-23

Abstract

This light emission device (10) is provided with a substrate (100) and a light emission unit (140). The light emission unit (140) is positioned on a first surface side of the substrate (100). Furthermore, the light emission unit (140) includes a first electrode, an organic layer, and a second electrode. The maximum distance between first ends (103) which face each other with a first area (106) therebetween, among the ends of the substrate (100), is referred to as a first distance d₁. The distance between second ends (104) which face each other with a second area (107) therebetween, among the ends of the substrate (100), is referred to as a second distance d₂. The second distance d₂ is smaller than the first distance d₁.

Description

Light emitting device

The present invention relates to a light emitting device.

In recent years, the development of light-emitting devices using organic EL has progressed. This light-emitting device is used as a lighting device or a display device, and has a configuration in which an organic layer is sandwiched between a first electrode and a second electrode. As an application example of organic EL, a flexible light-emitting device can be given.

Patent Document 1 describes that an island-shaped electroluminescence layer is formed into a ring shape in a lighting device. Further, it is described that a perforation for cutting is provided on a substrate or the like.

JP2015-167147A

However, in the illuminating device described in Patent Document 1, since the substrate is in a closed ring shape, there is a possibility that twisting and wrinkling may occur when attempting to install the illuminating device on a curved surface.

An example of a problem to be solved by the present invention is to provide a light emitting device that can be mounted with a good appearance regardless of the shape of the mounting surface.

The invention described in claim 1
A substrate,
A light emitting part located on the first surface side of the substrate and including a first electrode, an organic layer, and a second electrode;
The maximum distance between the first ends facing each other through the first region among the ends of the substrate is the first distance, and the second ends facing each other via the second region among the ends of the substrate. In the light emitting device, the distance between the parts is a second distance smaller than the first distance.

The invention described in claim 2
A substrate,
A light emitting part located on the first surface side of the substrate and including a first electrode, an organic layer, and a second electrode;
In the light emitting device, the substrate surrounds a first region, and the substrate is interrupted in a second region connected to the first region.

The invention according to claim 12
A substrate,
A light emitting part located on the first surface side of the substrate and including a first electrode, an organic layer and a second electrode;
With
The substrate is
One end,
An end facing the one end through the first region;
An end opposite to the one end of the substrate,
The one end and the opposite end are light emitting devices that are continuous along the edge of the substrate.

The above-described object and other objects, features, and advantages will be further clarified by a preferred embodiment described below and the following drawings attached thereto.

It is a top view which illustrates the composition of the light emitting device concerning an embodiment. It is a figure which shows the example of the use condition of a light-emitting device. 3 is a cross-sectional view illustrating the configuration of a light emitting device according to Example 1. FIG. 3 is a plan view illustrating the configuration of a light emitting device according to Example 1. FIG. 3 is a plan view illustrating the configuration of a light emitting device according to Example 1. FIG. 3 is a plan view illustrating the configuration of a light emitting device according to Example 1. FIG. 3 is a plan view illustrating the configuration of a light emitting device according to Example 1. FIG. (A) And (b) is a top view which illustrates the composition of the light-emitting device concerning Example 2. (A) to (c) are plan views illustrating the configuration of the light emitting device according to the second embodiment. It is a figure which shows the example used combining multiple light-emitting devices. It is a figure which shows the example used combining multiple light-emitting devices. It is sectional drawing which shows the modification of the structure of a light-emitting device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

FIG. 1 is a plan view illustrating the configuration of a light emitting device 10 according to the embodiment. FIG. 1 illustrates the relationship between the substrate 100 and the light emitting unit 140, and shows a state viewed from a direction perpendicular to the first surface of the substrate 100.

In the present embodiment, the light emitting device 10 includes a substrate 100 and a light emitting unit 140. The light emitting unit 140 is located on the first surface side of the substrate 100. The light emitting unit 140 includes a first electrode, an organic layer, and a second electrode. The light emitting device 10 is a lighting device or a display device such as a display. The light emitting device 10 may be attached to a vehicle and used as a brake lamp or the like.

Further, in the present embodiment, the maximum distance between the first end portion 103 opposed to each other via the first region 106 of the end portion of the substrate 100 is a first distance d _1. The distance between the second end 104 facing each other with the second region 107 of the end portion of the substrate 100 is the second distance d _2. Then, the second distance _{d 2} smaller than the first distance _{d 1.} This will be described in detail below.

In the present embodiment, the substrate 100 surrounds the first region 106. The substrate 100 is interrupted in the second region 107 connected to the first region 106.

In other words, the second region 107 connects the first region 106 and the external region 108 located outside the substrate 100. In other words, the first region 106 is a hollow portion of the substrate 100, and the second region 107 is a notch portion of the substrate 100. It can be said that the substrate 100 has a frame shape with a part cut off. The first area 106 is an area inside the frame, and the external area 108 is an area outside the frame. The external region 108 is a region different from the substrate 100, the first region 106, and the second region 107, and is a region that surrounds the region where the substrate 100, the first region 106, and the second region 107 are combined. .

In the present embodiment, the substrate 100 has a first end 103a, a first end 103b, and a third end 105a, and the first end 103a and the third end 105a are at the edge of the substrate 100. It is continuous along. Here, the first end portion 103 a is one end portion of the substrate 100, and the first end portion 103 b is an end portion that faces the first end portion 103 a via the first region 106. The third end portion 105 a is an end portion on the side opposite to the first end portion 103 a of the substrate 100.

As described above, in the light emitting device 10 according to this embodiment, the substrate 100 surrounding the first region 106 is interrupted in the second region 107. Therefore, even when the substrate 100 is arranged along, for example, a curved surface, the second region 107 absorbs the excess or deficiency of dimensions, so that the light emitting device 10 is less likely to be twisted or wrinkled. Moreover, the light-emitting device 10 excellent in design can be obtained.

In the example of this figure, the substrate 100 as a whole has a heart shape with a hollow inside. The hollowed out portion is the first region 106. However, the shapes of the substrate 100 and the light emitting unit 140 are not limited to this example, and may be a circle, a rectangle, a polygon, a star, or the like. However, it is preferable that at least a part of the edge of the light emitting unit 140 is along the edge of the substrate 100. Further, the substrate 100 is not closed in an annular shape, and is interrupted in the second region 107 as described above.

The light emitting unit 140 has a stacked structure including a first electrode, an organic layer, and a second electrode. In the example of this figure, a plurality of light emitting portions 140 are provided on the first surface of the substrate 100. Specifically, the light emitting device 10 has two light emitting unit 140 segments. The plurality of light emitting units 140 have the same shape as the substrate 100 as a whole. However, it is not limited to the example of this figure, The light emitting part 140 may be provided in the 1st surface of the board | substrate 100 only. Further, the shape of the light emitting unit 140 may be different from the shape of the substrate 100 when viewed from the direction perpendicular to the first surface.

The light emitting device 10 may be flat or curved. In addition, the light emitting device 10 may have flexibility. That is, the substrate 100 may be planar or curved. Further, the substrate 100 may have flexibility. The light emitting device 10 according to the present embodiment is configured such that the second end portion 104 faces the substrate 100 when the substrate 100 is along a plane. In addition, the light emitting device 10 according to the present embodiment is configured such that the first end portion 103 faces the substrate 100 when the substrate 100 is along a plane.

In the example of this figure, when the substrate 100 is set along a plane, at least a part of the end of the substrate 100 is curved as viewed from the direction perpendicular to the first surface. Specifically, among the end portions of the substrate 100, the first end portion 103 and the third end portion 105 are on a curve. Moreover, in the example of this figure, when the board | substrate 100 is made to follow a plane, the board | substrate 100 has a corner | angular part seeing from a direction perpendicular | vertical to a 1st surface.

The substrate 100 has one or more sets of first ends 103 facing each other. That is, the first end portion 103 includes a first end portion 103a and a first end portion 103b that face each other. The first end 103 is an inner peripheral edge of the substrate 100. The first end 103a and the first end 103b are connected to each other directly or via another end. When viewed from the direction perpendicular to the first surface of the substrate 100, the first end 103a and the first end 103b may be parallel to each other or non-parallel. Further, the first end 103a and the first end 103b may each be a straight line or a curved line. Both the first end portion 103 a and the first end portion 103 b face the first region 106.

The substrate 100 has a third end 105. The third end portion 105 is an outer peripheral edge of the substrate 100. In the example of the figure, the third end portion 105 includes a third end portion 105a and a third end portion 105b. The third end 105a is the end opposite to the first end 103a of the substrate 100, and the third end 105b is the end opposite to the first end 103b of the substrate 100. The third end portion 105a and the third end portion 105b are connected to each other directly or via another end portion. When viewed from the direction perpendicular to the first surface of the substrate 100, the third end portion 105a and the third end portion 105b may be parallel to each other or non-parallel. Further, the third end portion 105a and the third end portion 105b may each be a straight line or a curved line. Both the third end portion 105 a and the third end portion 105 b face the external region 108. In the example of this figure, the first end portion 103 and the third end portion 105 are substantially similar to each other, but the first end portion 103 and the third end portion 105 may have different shapes.

The substrate 100 has one or more sets of second ends 104 facing each other. That is, the second end 104 includes a second end 104a and a second end 104b that face each other. In the example shown in the figure, the second end 104 connects the first end 103 and the third end 105. Specifically, the second end 104a connects the first end 103a and the third end 105a, and the second end 104b connects the first end 103b and the third end 105b. . In addition, one end of the second end 104a and one end of the second end 104b are connected via at least the first end 103a and the first end 103b, and the second end 104a and the second end 104a are connected to the second end 104a. The other end of the end 104b is connected via at least the third end 105a and the third end 105b. The first end portion 103, the second end portion 104, and the third end portion 105 together form one closed region, and this region coincides with the region where the substrate 100 exists. When viewed from the direction perpendicular to the first surface of the substrate 100, the second end 104a and the second end 104b may be parallel to each other or non-parallel. Further, each of the second end portion 104 a and the second end portion 104 b may be a straight line, a curved line, or the apex of the substrate 100. Both the second end portion 104 a and the second end portion 104 b face the second region 107.

FIG. 2 is a diagram illustrating an example of a usage state of the light emitting device 10. In the example of this figure, a plurality of light emitting devices 10 are used in combination.

As described above, in the present embodiment, the first distance d ₁ is the maximum distance between the first ends 103 of the substrates 100 facing each other with the first region 106 interposed therebetween. The second distance d ₂ is a distance between the second end portions 104 of the substrates 100 facing each other with the second region 107 interposed therebetween. The first distance _{d 1} is greater than the second distance _{d 2.}

By having such a shape, the substrate 100 of one light emitting device 10 can be connected through the first region 106 of another light emitting device 10. By doing so, it is possible to further improve the overall design using a plurality of light emitting devices 10.

From the viewpoint of making it difficult for the plurality of light emitting devices 10 to come off, the first width w ₁ that is the width of the second end 104 is preferably larger than the second distance d ₂ . From the same viewpoint, the second width w ₂ is preferably larger than the second distance d ₂ . Here, the second width w ₂ is the smallest width of the widths of the substrate 100 having the first end 103 as one end and the third end 105 opposite to the first end 103 as the other end. .

When a plurality of light emitting devices 10 are used in combination, it is not always necessary to pass the substrate 100 of one light emitting device 10 through the first region 106 of another light emitting device 10. For example, at least a part of the adjacent light emitting devices 10 may be arranged so as to overlap each other.

As described above, according to this embodiment, the second distance _{d 2} of the substrate 100 is less than the first distance _{d 1.} In other words, the substrate 100 surrounds the first region 106. The substrate 100 is interrupted in the second region 107 connected to the first region 106. Therefore, twisting and wrinkling are unlikely to occur regardless of the shape of the mounting surface, and the light emitting device 10 can be mounted with good appearance.

Example 1
FIG. 3 is a cross-sectional view illustrating the configuration of the light emitting device 10 according to the first embodiment. This figure corresponds to the AA cross section of FIG. This cross section is a cross section in the width direction having the first end 103 as one end and the third end 105 as the other end. The light emitting device 10 according to this example has the same configuration as the light emitting device 10 according to the embodiment.

The light emitting unit 140 is provided on the first surface 101 of the substrate 100 and has a stacked structure including the first electrode 110, the organic layer 120, and the second electrode 130.

Although the shape and material of the substrate 100 are not particularly limited, the substrate 100 is a light-transmitting substrate such as a glass substrate or a resin substrate. The substrate 100 may have flexibility. In the case of flexibility, the thickness of the substrate 100 is, for example, not less than 10 μm and not more than 1000 μm. When the substrate 100 is a resin substrate, the substrate 100 is formed using, for example, PEN (polyethylene naphthalate), PES (polyethersulfone), PET (polyethylene terephthalate), or polyimide. When the substrate 100 is a resin substrate, an inorganic barrier film such as SiN _x or SiON is formed on at least one surface (preferably both surfaces) of the substrate 100 in order to prevent moisture from permeating the substrate 100. It is preferable.

A light emitting unit 140 is formed on the first surface 101 of the substrate 100. The light emitting unit 140 has a laminated structure in which a translucent first electrode 110, an organic layer 120, and a light-shielding second electrode 130 are laminated in this order. The first electrode 110 is located between the substrate 100 and the second electrode 130. Therefore, of the light emitted from the light emitting unit 140, the light output to the first electrode 110 side has higher intensity than the light output to the second electrode 130 side. That is, the second surface 102 opposite to the first surface 101 of the substrate 100 is a light output surface.

The first electrode 110 is a transparent electrode having optical transparency. The material of the transparent electrode is a metal-containing material, for example, a metal oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IWZO (Indium Tungsten Zinc Oxide), or ZnO (Zinc Oxide). The thickness of the first electrode 110 is, for example, not less than 10 nm and not more than 500 nm. The first electrode 110 is formed using, for example, a sputtering method or a vapor deposition method. The first electrode 110 may be a carbon nanotube or a conductive organic material such as PEDOT / PSS.

The organic layer 120 has a light emitting layer. The organic layer 120 has a configuration in which, for example, a hole injection layer, a light emitting layer, and an electron injection layer are stacked in this order. A hole transport layer may be formed between the hole injection layer and the light emitting layer. In addition, an electron transport layer may be formed between the light emitting layer and the electron injection layer. The organic layer 120 may be formed by a vapor deposition method. In addition, at least one layer of the organic layer 120, for example, a layer in contact with the first electrode 110, may be formed by a coating method such as an inkjet method, a printing method, or a spray method. In this case, the remaining layers of the organic layer 120 may be formed by an evaporation method, or all the layers of the organic layer 120 may be formed by a coating method.

The second electrode 130 is, for example, a metal layer made of a metal selected from the group consisting of Al, Au, Ag, Pt, Mg, Sn, Zn, and In, or an alloy of a metal selected from this group. Contains. In this case, the second electrode 130 has a light shielding property. The thickness of the second electrode 130 is, for example, not less than 10 nm and not more than 500 nm. The second electrode 130 is formed using, for example, a sputtering method or a vapor deposition method. In the example shown in the drawing, the second electrode 130 is wider than the first electrode 110. For this reason, when viewed from the direction perpendicular to the first surface 101 of the substrate 100, the entire first electrode 110 in the width direction with the first end 103 as one end and the third end 105 as the other end is It overlaps with the two electrodes 130 and is covered with the second electrode 130. The first electrode 110 is wider than the second electrode 130, and the entire second electrode 130 overlaps the first electrode 110 in the width direction when viewed from the direction perpendicular to the first surface 101 of the substrate 100. It may be.

In the example of this figure, the first electrode 110 is divided into a plurality of regions, but the first electrode 110 may be integrated on the first surface 101. In that case, one light emitting unit 140 may be formed on the first surface 101. Moreover, in the example of this figure, although the 1st electrode 110 is formed for every light emission part 140, the 1st electrode 110 may be continuously formed over the several light emission part 140. FIG. In the example of this figure, the organic layer 120 and the second electrode 130 are continuously formed over the plurality of light emitting portions 140. However, it is not limited to the example of this figure, At least one of the organic layer 120 and the 2nd electrode 130 may be formed for every light emission part 140. FIG.

The edge of the first electrode 110 is at least partially covered with the insulating film 150. The insulating film 150 is made of, for example, a photosensitive resin material such as polyimide, and surrounds a portion of the first electrode 110 that becomes the light emitting portion 140. In the example of this figure, when viewed from a direction perpendicular to the first surface 101 of the substrate 100, a part of the insulating film 150 protrudes from the second electrode 130. In the example shown in this drawing, the second electrode 130 is also formed on the insulating film 150. In addition, when viewed from a direction perpendicular to the first surface 101 of the substrate 100, a part of the organic layer 120 overlaps with the insulating film 150. In the example shown in this figure, the organic layer 120 is also formed on the insulating film 150.

The light emitting device 10 according to this example further includes a sealing film 180. The sealing film 180 is formed so as to cover the entire light emitting unit 140. The light emitting unit 140 is located between the sealing film 180 and the substrate 100. As the sealing film 180, for example, an inorganic barrier film such as SiN _x , SiON, Al ₂ O ₃ , TiO ₂ , SiO ₂ , or SiOC, a barrier laminated film including them, or a mixed film thereof can be used. . These can be formed by, for example, a vacuum film forming method such as a sputtering method, a CVD method, an ALD method, or an EB vapor deposition method. In the example of this figure, a part of the sealing film 180 is in contact with the first surface 101. The light emitting device 10 may be sealed using a plate-shaped sealing member instead of or in addition to the sealing film 180.

FIG. 12 is a cross-sectional view showing a modified example of the structure of the light emitting device 10. In this modification, the light emitting device 10 includes a sealing member 200, an adhesive layer 210, and a desiccant 220 instead of the sealing film 180. The sealing member 200 is made of metal, resin, or glass and has a recess. The desiccant 220 contains, for example, CaO or BaO. The sealing member 200 covers the light emitting unit 140, and a desiccant 220 is formed on at least a part of the surface of the sealing member 200. The sealing member 200 is fixed to the substrate 100 via the adhesive layer 210. The sealing member 200 provided with the desiccant 220 is stacked on the light emitting unit 140 via the adhesive layer 210, and the light emitting unit 140 is sealed by pressing the edge of the sealing member 200 toward the substrate 100. It can be sealed with the member 200 or the like.

3, the light emitting device 10 further includes a conductive portion 170 on the first surface 101 side of the substrate 100. The conductive part 170 is located between the light emitting part 140 and the end of the substrate 100. Specifically, when viewed from a direction perpendicular to the first surface 101 of the substrate 100, the outer periphery of the light emitting unit 140 is separated from the outer periphery of the substrate 100. The conductive portion 170 is located between the outer periphery of the light emitting portion 140 and the outer periphery of the substrate 100, and extends along the outer periphery of the light emitting portion 140 and the outer periphery of the substrate 100. The conductive part 170 is electrically connected to the first electrode 110. Specifically, in the example of this figure, the conductive portion 170 is between the third end portion 105 and the portion of the outer periphery of the plurality of light emitting portions 140 that is closest to the third end portion 105 along the third end portion 105. To position. Further, the conductive portion 170 is located between the first end portion 103 and the portion of the outer periphery of the plurality of light emitting portions 140 that is closest to the first end portion 103 and along the first end portion 103. When the light emitting device 10 has only one light emitting unit 140, the conductive unit 170 may be provided so as to surround the light emitting unit 140 along the outer periphery of the light emitting unit 140.

The conductive part 170 includes a material having a higher conductivity than the material of the first electrode 110. In addition, the electrical resistivity of the conductive part 170 is lower than the electrical resistivity of the first electrode 110. Conductive portion 170 includes, for example, a metal selected from the group consisting of Al, Ag, Mo, and alloys containing these. Specifically, the conductive part 170 may be APC (AgPdCu) or the like. The conductive portion 170 has a configuration in which, for example, a first metal layer such as Mo or Mo alloy, a second metal layer such as Al or Al alloy, and a third metal layer such as Mo or Mo alloy are laminated in this order. It may be. In the example of this figure, the conductive portion 170 is located between the substrate 100 and the first electrode 110, but the conductive portion 170 is located on the opposite side of the substrate 100 with respect to the first electrode 110. Also good.

4 to 7 are plan views illustrating the configuration of the light emitting device 10 according to this embodiment. 4 to 7 show the light emitting device 10 as viewed from the first surface 101 side of the substrate 100, that is, from the side opposite to the light output surface. In FIG. 4, the sealing film 180 is indicated by a broken line. FIG. 5 is a diagram in which the sealing film 180 and the second electrode 130 are removed from FIG. 4, and the outer periphery of the organic layer 120 is indicated by a broken line. FIG. 6 is a view obtained by removing the organic layer 120 and the insulating film 150 from FIG. FIG. 7 is a diagram in which the first electrode 110 is removed from FIG. 6, and the outer periphery of the light emitting unit 140 is indicated by a broken line.

The light emitting device 10 further includes a first terminal 112 and a second terminal 132. The first terminal 112 and the second terminal 132 will be described in detail with reference to FIG. Both the first terminal 112 and the second terminal 132 are formed on the same side of the substrate 100 as the light emitting unit 140. At least a part of the first terminal 112 and the second terminal 132 is located outside the sealing film 180.

The first terminal 112 is electrically connected to the first electrode 110. In the example shown in this drawing, the first terminal 112 is connected to the conductive portion 170. The first terminal 112 includes the first terminal 112a to the first terminal 112d. The first terminals 112a are located at both ends in the extending direction of the conductive portion 170a. Here, the conductive portion 170 a is a conductive portion 170 located between the third end portion 105 and the portion of the outer periphery of the plurality of light emitting portions 140 that is closest to the third end portion 105 and along the third end portion 105. is there. The first terminals 112b are located at both ends in the extending direction of the conductive portion 170b. Here, the conductive portion 170 b is located between the first end portion 103 and the portion of the outer periphery of the plurality of light emitting portions 140 that is closest to the first end portion 103 and along the first end portion 103. It is. The first terminal 112 a and the first terminal 112 b are disposed at the second end 104. The two first terminals 112a face each other, and the two first terminals 112b face each other. The first terminal 112 c is connected to a middle portion of the conductive portion 170 a and is located between the conductive portion 170 a and the third end portion 105. The first terminal 112 d is connected to a middle portion of the conductive portion 170 b and is located between the conductive portion 170 b and the first end portion 103. Note that the light emitting device 10 may not include at least one of the first terminal 112a to the first terminal 112d, and may further include another first terminal 112.

The second terminal 132 is electrically connected to the second electrode 130. In the example shown in this figure, at least a part of the second electrode 130 is connected to the second terminal 132 over the insulating film 150. The second terminal 132 includes the second terminal 132a to the second terminal 132c. The second terminal 132a is disposed at the second end 104, and the two second terminals 132a face each other. The second terminal 132 b is located between the conductive portion 170 a and the third end portion 105. The second terminal 132 c is located between the conductive portion 170 b and the first end portion 103. The second terminal 132b is aligned with the first terminal 112c, and the second terminal 132c is aligned with the first terminal 112d. The second terminal 132a is located between the first terminal 112a and the first terminal 112b. Note that the light emitting device 10 may not include at least one of the second terminals 132a to 132c, and may further include another second terminal 132.

The first terminal 112 and the second terminal 132 have, for example, at least one of a layer formed of the same material as the conductive portion 170 and a layer formed of the same material as the first electrode 110. . Of the first terminal 112 and the second terminal 132, a layer formed of the same material as the conductive portion 170 can be formed in the same process as the conductive portion 170. For this reason, the conductive portion 170 may be integrated with at least a part of the first terminal 112.

In the example shown in the figure, one conductive portion 170 is formed for each light emitting portion 140. However, the present invention is not limited to this example, and a plurality of conductive portions 170 may be formed for one light emitting portion 140.

A positive terminal of a control circuit is connected to the first terminal 112 via a conductive member such as a flexible cable, a bonding wire, or a lead terminal, and a conductive member such as a flexible cable, a bonding wire, or a lead terminal is connected to the second terminal 132. Is connected to the negative terminal of the control circuit.

Next, a method for manufacturing the light emitting device 10 will be described. First, the conductive portion 170 is formed on the substrate 100 by performing film formation by sputtering or the like and patterning by etching or the like. At this time, the first terminal 112 and the second terminal 132 can be formed simultaneously. Next, the first electrode 110 is formed using, for example, a sputtering method. Then, the first electrode 110 is formed into a predetermined pattern using, for example, a photolithography method. Next, the insulating film 150 is formed on the edge of the first electrode 110. For example, when the insulating film 150 is formed of a photosensitive resin, the insulating film 150 is formed in a predetermined pattern through an exposure and development process. Next, the organic layer 120 and the second electrode 130 are formed in this order. When the organic layer 120 includes a layer formed by an evaporation method, this layer is formed in a predetermined pattern using, for example, a mask. The second electrode 130 is also formed in a predetermined pattern using, for example, a mask. Next, a sealing film 180 is formed to seal the light emitting unit 140.

When a mask is used to form the organic layer 120 and the second electrode 130 in a predetermined pattern, a support portion for fixing a portion corresponding to the first region 106 of the mask to the vapor deposition apparatus is provided in the second region 107. It can be overlapped. Therefore, the light emitting device 10 can be manufactured by patterning easily.

In addition, although the example of the bottom emission type light-emitting device 10 was shown in the present Example, it is not limited to it. For example, the light emitting device 10 may be a top emission type.

As described above, according to this example, the second distance d ₂ of the substrate 100 is smaller than the first distance d ₁ as in the embodiment. In other words, the substrate 100 surrounds the first region 106. The substrate 100 is interrupted in the second region 107 connected to the first region 106. Therefore, twisting and wrinkling are unlikely to occur regardless of the shape of the mounting surface, and the light emitting device 10 can be mounted with good appearance.

(Example 2)
FIGS. 8A and 8B and FIGS. 9A to 9C are plan views illustrating the configuration of the light emitting device 10 according to this example. The light emitting device 10 according to the present example has the configuration of the light emitting device 10 according to at least one of the embodiment and the first example. FIGS. 8A and 8B and FIGS. 9A to 9C all show a state in which the substrate 100 is along a plane. As illustrated in these drawings, the light-emitting device 10 can have various shapes and can improve design.

In the example shown in FIGS. 8A and 8B, when the substrate 100 is viewed from a direction perpendicular to the first surface 101, a region (hereinafter referred to as “the region where the substrate 100, the first region 106, and the second region 107 are combined”). The first region 106 is located at the center of the entire region. Further, the outer shape of the entire region and the outer shape of the first region 106 are substantially similar, and the center of the entire region and the center of the first region 106 coincide.

In the example shown in FIGS. 9A to 9C, the center of the entire region does not coincide with the center of the first region 106 when viewed from the direction perpendicular to the first surface 101 of the substrate 100. Further, in the example of FIGS. 9A and 9B, the first region 106 is not located at the center of the entire region. The outer shape of the entire region and the outer shape of the first region 106 are substantially similar in the examples of FIGS. 9A and 9B, and are not similar in the example of FIG. 9C.

In the example of FIGS. 8A, 8B, 9A, and 9C, the second end portion 104 is a straight line parallel to each other when viewed from the direction perpendicular to the first surface 101 of the substrate 100. It is. On the other hand, in the example of FIG. 9B, the second end portions 104 are the apexes of the substrate 100 when viewed from the direction perpendicular to the first surface 101 of the substrate 100.

8A and 9A to 9C, a region where the substrate 100, the first region 106, and the second region 107 are combined when viewed from the direction perpendicular to the first surface 101. That is, the entire area is circular as a whole. Further, at least a part of the end portion of the substrate 100 is curved. On the other hand, in the example of FIG. 8B, the entire area has a star shape when viewed from the direction perpendicular to the first surface 101. Further, the end portions of the substrate 100 are all linear. Note that the shape of the entire region is not limited to these examples, and may be a rectangle, a polygon, or the like.

8A, 8B, 9A to 9C, the light emitting device 10 has a corner portion when viewed from the direction perpendicular to the first surface 101. FIG. Furthermore, in the example of FIG. 8B, the entire region has corners.

FIG. 10 and FIG. 11 are diagrams showing examples in which a plurality of light emitting devices 10 illustrated in FIG. 8A are used in combination.

In the example of FIG. 10, five light emitting devices 10 are connected. Specifically, the substrate 100 of one light emitting device 10 is passed through the first region 106 of one or more other light emitting devices 10. In the example of FIG. 11, three light emitting devices 10 are combined. Specifically, at least a part of the adjacent light emitting devices 10 are overlapped with each other. As described above, various designs can be given depending on how the plurality of light emitting devices 10 are combined. The number of light emitting devices 10 to be combined is not particularly limited. 10 and 11 show examples of combining light emitting devices 10 having the same shape, a plurality of light emitting devices 10 including one or more light emitting devices 10 having different shapes may be combined. Further, the plurality of combined light emitting devices 10 may be controlled to emit light at the same timing, or may be controlled to emit light at different timings.

As mentioned above, although embodiment and the Example were described with reference to drawings, these are the illustrations of this invention, Various structures other than the above are also employable.

This application claims priority based on Japanese Patent Application No. 2017-027599 filed on Feb. 17, 2017, the entire disclosure of which is incorporated herein.

Claims

A substrate,
A light emitting part located on the first surface side of the substrate and including a first electrode, an organic layer, and a second electrode;
The maximum distance between the first ends facing each other through the first region among the ends of the substrate is the first distance, and the second ends facing each other via the second region among the ends of the substrate. The light emitting device wherein the distance between the parts is a second distance smaller than the first distance.
A substrate,
A light emitting part located on the first surface side of the substrate and including a first electrode, an organic layer, and a second electrode;
The light emitting device, wherein the substrate surrounds a first region, and the substrate is interrupted in a second region connected to the first region.
The light-emitting device according to claim 1.
The light emitting device, wherein the substrate surrounds the first region, and the substrate is interrupted in the second region connected to the first region.
The light emitting device according to claim 3.
The second region is a light-emitting device that connects the first region and an external region located outside the substrate.
The light-emitting device according to claim 3 or 4,
A light emitting device having a first width, which is a width of the second end portion, larger than the second distance.
The light emitting device according to any one of claims 3 to 5,
Of the widths of the substrate having the first end as one end and the third end opposite to the first end as the other end, the second width, which is the smallest width, is based on the second distance. Larger light emitting device.
The light emitting device according to any one of claims 3 to 6,
A light emitting device in which the second end portion faces when the substrate is placed along a plane.
The light emitting device according to any one of claims 3 to 7,
A light emitting device further comprising a conductive portion positioned between the light emitting portion and an end portion of the substrate on the first surface side of the substrate.
The light emitting device according to any one of claims 3 to 8,
A light-emitting device in which at least a part of an end portion of the substrate is curved when viewed from a direction perpendicular to the first surface when the substrate is along a plane.
The light emitting device according to any one of claims 3 to 9,
When the substrate is placed along a plane, the region including the substrate, the first region, and the second region is circular as a whole when viewed from a direction perpendicular to the first surface. Light emitting device.
The light emitting device according to any one of claims 3 to 10,
The light emitting device according to claim 1, wherein the substrate has a corner portion when viewed from a direction perpendicular to the first surface when the substrate is along a plane.
A substrate,
A light emitting part located on the first surface side of the substrate and including a first electrode, an organic layer and a second electrode;
With
The substrate is
One end,
An end facing the one end through the first region;
An end opposite to the one end of the substrate,
The light emitting device in which the one end and the opposite end are continuous along an edge of the substrate.