JP2015162444A - light-emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the width of a non-light-emitting region from widening in an organic EL element.SOLUTION: An auxiliary electrode 124 is formed on a part of a first electrode 120 of a light-emitting unit 104. An opening 122 is formed in the first electrode 120. A first insulating layer 174 is located on the auxiliary electrode 124. A second insulating layer 176 is located on the opening 122 of the first electrode 120. A light-emitting unit 104 includes a light-emitting element 102, a first non-light-emitting region 106, and a second non-light-emitting region 108. The first non-light-emitting region 106 overlaps the first insulating layer 174. The second non-light-emitting region 108 overlaps the second insulating layer 176. The light-emitting element 102 is provided between the first non-light-emitting region 106 and the second non-light-emitting region 108. The first insulating layer 174 includes a salient 175 in the position in which it overlaps the auxiliary electrode 124. The second insulating layer 176 includes a recess 177 in the position in which it overlaps the opening 122.

Description

  The present invention relates to a light emitting device.

  Development of a light emitting device using an organic EL element as a light source is in progress. The organic EL element has a configuration in which an organic layer is sandwiched between a first electrode and a second electrode. Since one of the electrodes of the organic EL element is a transparent electrode, the resistance is increased. In order to reduce the resistance of the transparent electrode, for example, as described in Patent Document 1, a metal layer may be superimposed on a part of the transparent electrode.

  Patent Document 1 describes that a plurality of transparent electrodes are arranged in parallel to each other. Specifically, the side surface of the transparent electrode is inclined. A metal layer is formed on the inclined surface. The metal layer is covered with an insulating layer. This insulating layer is formed on the side surface of the transparent electrode.

JP 2000-82588 A

  As described above, the organic EL element has a configuration in which the organic layer is sandwiched between the first electrode and the second electrode. Here, when an opening is formed in the first electrode, there is a possibility that the organic layer is thinned at a portion overlapping the opening. In this case, the second electrode may be short-circuited to the first electrode at a portion overlapping the opening of the first electrode. In addition, when a conductive layer is formed on the first electrode, the organic layer may be thinned at a portion overlapping this conductive layer. Also in this case, there is a risk that the second electrode is short-circuited to the first electrode at a portion overlapping the conductive layer.

  In order to suppress such a short circuit, it is necessary to cover the opening of the first electrode and the conductive layer with an insulating layer. Here, the insulating layer at the position of the opening may be formed in a concave shape, and the insulating layer at the position of the conductive layer may be formed in a convex shape. When an organic layer is formed of a coating material on a substrate having such an insulating layer, a region without a coating film may be formed on the lower electrode.

  An example of a problem to be solved by the present invention is that a coating film can be formed in a desired region in a light emitting device.

The invention according to claim 1 is a substrate;
A light emitting unit formed on the substrate and having a first electrode, a second electrode overlapping the first electrode, and an organic layer positioned between the first electrode and the second electrode;
A conductive layer formed on a portion of the first electrode;
With
The first electrode has an opening;
A first insulating layer on the conductive layer at a position different from the opening;
A second insulating layer overlying the opening;
With
The first insulating layer has a convex portion at a position overlapping the conductive layer,
The second insulating layer is a light emitting device having a recess at a position overlapping the opening.

It is a top view of a light-emitting device. It is the figure which removed the sealing member from FIG. FIG. 3 is a diagram in which a second electrode is removed from FIG. 2. It is the figure which removed the organic layer and the insulating layer from FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a figure for demonstrating an example of the formation method of an organic layer. (A) is a figure which shows the planar shape of an auxiliary electrode, (b) is a figure which shows the cross-sectional shape of an auxiliary electrode, (c) is a figure which shows the cross-sectional shape of the auxiliary electrode formed using sputtering method It is.

  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 of the light emitting device 100. 2 is a view in which the sealing member 180 is removed from FIG. 1, FIG. 3 is a view in which the second electrode 140 is removed from FIG. 2, and FIG. 4 is a view in which the organic layer 130 and the insulating layer 170 are removed from FIG. FIG.

  The light emitting device 100 according to the present embodiment includes a substrate 110, a light emitting unit 104, a conductive layer (for example, an auxiliary electrode 124: hereinafter described as the auxiliary electrode 124), an opening 122, a first insulating layer 174, and a second insulating layer 176. I have. The light emitting unit 104 includes a first electrode 120, a second electrode 140 overlapping the first electrode 120, and an organic layer 130 positioned between the first electrode 120 and the second electrode 140. The auxiliary electrode 124 is formed on a part of the first electrode 120. The opening 122 is formed in the first electrode 120. The first insulating layer 174 is located on the auxiliary electrode 124, and the second insulating layer 176 is located on the opening 122. The light emitting unit 104 includes a light emitting element 102 (light emitting unit), a first non-emitting region 106, and a second non-emitting region 108. The first non-light emitting region 106 overlaps with the first insulating layer 174, and the second non-light emitting region 108 overlaps with the second insulating layer 176. The light emitting element 102 is provided between the first non-light emitting region 106 and the second non-light emitting region 108. The first insulating layer 174 has a convex portion 175 shown in FIG. 6 at a position overlapping the auxiliary electrode 124, and the second insulating layer 176 is a concave portion 177 shown in FIG. 6 at a position overlapping the opening 122. have. Details will be described below.

  The light emitting device 100 is, for example, a polygon such as a rectangle, and includes a plurality of light emitting elements 102, a first terminal 150, and a second terminal 160. The first terminal 150 and the second terminal 160 are provided to supply power to the light emitting element 102. For this reason, a connection member (for example, a bonding wire or a lead member) for supplying power to the light emitting device 100 is connected to the first terminal 150 and the second terminal 160. In the example shown in FIGS. 1 to 4, the first terminal 150 extends in a first direction (X direction in the figure), and the second terminal 160 has a second direction (for example, intersecting the first direction (for example, It extends in the Y direction in the figure.

  The light-emitting element 102 is, for example, an organic EL element, and has a configuration in which a first electrode 120, an organic layer 130, and a second electrode 140 are stacked on a substrate 110. In the example shown in this drawing, the first electrode 120, the organic layer 130, and the second electrode 140 are laminated on the substrate 110 in this order. However, the first electrode 120 and the second electrode 140 may be reversed.

  The substrate 110 is a transparent substrate such as a glass substrate or a resin substrate. The substrate 110 may have flexibility. In this case, the thickness of the substrate 110 is, for example, not less than 10 μm and not more than 10000 μm. Also in this case, the substrate 110 may be formed of either an inorganic material or an organic material. The substrate 110 has a polygonal shape such as a rectangle.

  The organic layer 130 has a light emitting layer. The organic layer 130 has a configuration in which, for example, a hole transport layer, a light emitting layer, and an electron transport layer are stacked in this order. A hole injection layer may be formed between the first electrode 120 and the hole transport layer. In addition, an electron injection layer may be formed between the electron transport layer and the second electrode 140. At least one layer of the organic layer 130 is formed by a coating method. The remaining layers of the organic layer 130 are formed by vapor deposition. Note that all the layers of the organic layer 130 may be formed by an inkjet method, a printing method, or a spray method using a coating material. Further, all the layers of the organic layer 130 may be formed by vapor deposition.

  The first electrode 120 functions as an anode of the light emitting element 102, for example, and the second electrode 140 functions as a cathode of the light emitting element 102, for example. Both the first electrode 120 and the second electrode 140 are formed using a sputtering method. One of the first electrode 120 and the second electrode 140 (the first electrode 120 in the example shown in the figure) is a transparent electrode having optical transparency. The light emitted from the light emitting element 102 is emitted to the outside through the first electrode 120 and the second electrode 140 which are transparent electrodes (the first electrode 120 in the example shown in the figure). The material of the transparent electrode includes, for example, an inorganic material such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide), or a conductive polymer such as a polythiophene derivative.

  The other of the first electrode 120 and the second electrode 140 (the second electrode 140 in the example shown in the figure) is selected from the first group consisting of Au, Ag, Pt, Sn, Zn, and In. It includes a metal layer made of metal or an alloy of metals selected from this first group.

  More specifically, the first electrode 120 is connected to the first terminal 150 as shown in FIG. The first electrode 120 is continuously formed from the region of the substrate 110 that becomes the light emitting unit 104 to the first terminal 150. In the example shown in this drawing, the substrate 110 is rectangular, and the first terminals 150 are provided along two opposite sides of the substrate 110. That is, the first terminal 150 is a wiring. The first electrode 120 is formed between the two sides.

  A plurality of openings 122 are provided in the first electrode 120. The opening 122 extends between the plurality of light emitting elements 102 and divides the first electrode 120 into each of the plurality of light emitting elements 102. The first electrode 120 included in any light emitting element 102 is also connected to the first terminal 150. For this reason, even if the opening 122 is formed, the first electrodes 120 of the plurality of light emitting elements 102 are connected to each other and function as a common electrode. Note that the opening 122 may not be provided in a portion of the first electrode 120 located near the first terminal 150.

  Further, as shown in FIG. 2, the second electrodes 140 of the plurality of light emitting elements 102 are connected to each other. In other words, the second electrode 140 is formed as an electrode common to the plurality of light emitting elements 102. Specifically, the second electrode 140 is formed on the organic layer 130 and the insulating layer 170, and is connected to the second terminal 160. In the example shown in this figure, the second terminal 160 is formed along the remaining two sides of the substrate 110 where the first terminal 150 is not formed.

  In the example shown in FIGS. 1 to 4, two first terminals 150 are arranged apart from each other in the second direction, and two second terminals 160 are arranged apart from each other in the first direction. Yes. The insulating layer 170 and the light emitting unit 104 are located between the two first terminals 150 and between the two second terminals 160. In this case, the first electrode 120 is supplied with current or voltage from the two first terminals 150, and the second electrode 140 is supplied with current or voltage from the two second terminals 160. It is possible to suppress the distribution of current or voltage inside 104. Thereby, it is possible to suppress the occurrence of luminance distribution in the light emitting unit 104.

  The first terminal 150 has a configuration in which a second layer 154 is stacked on the same layer (first layer 152) as the first electrode 120. The first layer 152 is integrated with the first electrode 120. For this reason, the distance between the 1st terminal 150 and the 1st electrode 120 can be shortened, and resistance value between these can be made small. In addition, the non-light emitting region existing at the edge of the light emitting device 100 can be narrowed.

  The second layer 154 is formed of a material having a lower resistance value than the first electrode 120 (for example, a metal such as Al or a laminated film of a metal such as Mo / Al / Mo). A connection member that supplies a voltage to the first terminal 150 is connected to the second layer 154. Note that the second layer 154 has lower translucency than the first electrode 120.

  The second terminal 160 has a configuration in which a second layer 164 is stacked on the first layer 162. The first layer 162 is formed of the same material as the first electrode 120. However, the first layer 162 is separated from the first electrode 120. The second layer 164 is formed of the same material as the second layer 154.

  Further, as shown in FIG. 1, the plurality of light emitting elements 102 are sealed with a sealing member 180. The sealing member 180 has a shape in which the entire circumference of the edge of a polygonal metal foil or metal plate (for example, an Al foil or an Al plate) similar to the substrate 110 is pushed down. The edge is fixed to the substrate 110 with an adhesive or an adhesive. In this way, the sealing region 182 is formed on the entire circumference of the edge of the sealing member 180. The sealing region 182 has a shape along each side of a polygon having the same number of corners as the substrate 110, and surrounds the light emitting unit 104. However, the sealing member 180 may be formed of glass.

  A part of the first terminal 150 and a part of the second terminal 160 are located outside the sealing member 180. A conductive member is connected to a portion of the first terminal 150 located outside the sealing member 180 and a portion of the second terminal 160 located outside the sealing member 180. The conductive member is, for example, a lead frame or a bonding wire, and connects the first terminal 150 (or the second terminal 160) to a circuit board or the like.

  The auxiliary electrode 124 is in contact with the first electrode 120. In the example shown in this drawing, the auxiliary electrode 124 is provided on the surface of the first electrode 120 opposite to the substrate 110. The auxiliary electrode 124 is provided in each of the plurality of light emitting elements 102 and is located near the opening 122. The auxiliary electrode 124 is formed of a material having a lower resistance value than the first electrode 120 (for example, a metal such as Ag or Al). By forming the auxiliary electrode 124, it is possible to suppress a current drop or a voltage drop from occurring in the plane of the first electrode 120. Thereby, it can suppress that distribution arises in the brightness | luminance of the light-emitting device 100. FIG. Note that the auxiliary electrode 124 may not be provided. The auxiliary electrode 124 may be formed of a transparent conductive material, for example, the same material as the first electrode 120. The auxiliary electrode 124 is formed by using, for example, a coating method, but may be formed by using a sputtering method. When the auxiliary electrode 124 is formed by a coating method, the width of the auxiliary electrode 124 is, for example, 30 μm or more and 80 μm or less.

  Here, the shape of the auxiliary electrode 124 will be described with reference to a plan view of FIG. 8A and a cross-sectional view of FIG. FIG. 8C shows a cross-sectional shape of the auxiliary electrode 124 when the auxiliary electrode 124 is formed by sputtering. As shown in FIG. 8A, when the auxiliary electrode 124 is formed by a coating method, the planar shape of the auxiliary electrode 124 has a convex portion on the edge repeatedly. In other words, the planar shape of the auxiliary electrode 124 has a shape in which circles are overlapped along the line. This is because the shape of the liquid droplet generated when the liquid material onto which the auxiliary electrode 124 has been dropped is dropped onto the substrate 110 remains to some extent. As shown in the cross-sectional view of FIG. 8B, the cross-sectional shape of the auxiliary electrode 124 formed by the coating method is the same as the cross-sectional shape of the auxiliary electrode 124 formed by the sputtering method (see FIG. 8C). In comparison, the central portion of the upper surface is more convex than the end portion of the upper surface.

  In the example shown in the drawing, the auxiliary electrode 124 extends between the two first terminals 150, but is not directly connected to any of the second layers 154 of the two first terminals 150. A region of the first electrode 120 where the auxiliary electrode 124 is not formed has a higher resistance value per unit length than a region of the first electrode 120 where the auxiliary electrode 124 is formed. This high resistance region is provided for each of the plurality of light emitting elements 102. This high resistance region becomes a resistance region or functions as a resistance element, and restricts current concentration due to a short circuit generated between the upper electrode and the lower electrode of the plurality of light emitting elements 102 (current limiting resistor). Becomes). The current can be limited in advance by adjusting the resistance value of the high resistance region in each of the plurality of light emitting elements 102.

  However, the auxiliary electrode 124 may be directly connected to any one of the second layers 154.

  The openings 122 and the auxiliary electrodes 124 are alternately provided. The distance W4 (see FIG. 4) from the side surface of the opening 122 on the auxiliary electrode 124 side to the side surface of the auxiliary electrode 124 on the opening 122 side is, for example, an aperture ratio of, for example, 80% and 800 μm or more. When the thickness is 1200 μm or less, it is difficult for the user to visually recognize. A light emitting element 102 is provided in each region between the opening 122 and the auxiliary electrode 124.

  As shown in FIG. 3, an insulating layer 170 is formed on a region of the first electrode 120 that is not covered with the second layer 154. The insulating layer 170 is made of a photosensitive resin such as polyimide. A plurality of openings 172 are provided in the insulating layer 170. The opening 172 extends in parallel with the opening 122 and the auxiliary electrode 124. However, the opening 172 does not overlap the opening 122 of the auxiliary electrode 124 and the first electrode 120. For this reason, the auxiliary electrode 124 is covered with a part of the insulating layer 170 (first insulating layer 174), and a part of the opening 122 positioned inside the light emitting unit 104 is also a part of the insulating layer 170 ( Covered by a second insulating layer 176). The organic layer 130 described above is formed at least inside the opening 172. Then, when a voltage or current is applied between the first electrode 120 and the second electrode 140, the organic layer 130 located in the opening 172 emits light. In other words, the light emitting element 102 is formed in each of the openings 172. The first non-light emitting region 106 is formed by the first insulating layer 174, and the second non-light emitting region 108 is formed by the second insulating layer 176.

  The first non-light-emitting region 106 and the second non-light-emitting region 108 are linearly formed in the y direction in the drawing, and in a direction intersecting with the direction in which the second non-light-emitting region 108 extends (for example, the x direction in the drawing). It is provided repeatedly. The light emitting element 102 (light emitting region) is provided between the first non-light emitting region 106 and the second non-light emitting region 108. Further, a part of the insulating layer 170 (the third insulating layer 178) is formed so as to surround the first non-light-emitting region 106 and the second non-light-emitting region 108. The third insulating layer 178 also forms a non-light emitting region (third non-light emitting region).

  Here, when the second insulating layer 176 is not formed, a part of the layer forming the organic layer 130 may flow into the opening 122. When the material flowing into the opening 122 has conductivity, the adjacent light emitting elements 102 are short-circuited. In this case, the luminance distribution due to the fact that the auxiliary electrode 124 is not directly connected to the first terminal 150 may not be suppressed.

Note that in the X direction (first direction) in the drawing, the width of the light emitting element 102, the width of the first non-light emitting region 106, and the width of the second non-light emitting region 108 are as follows. It is preferable to set so that the non-light emitting region 108 is not visually recognized. When the human visual acuity is 1.0, the visual angle θ that the human can visually recognize from a position 5 m away from the visual recognition target is 1/60 °. Further, w = x × tan θ where w is the minimum width of the visual target and x is the distance from the visual target to the person. When θ is small, tan θ≈θ. Here, when x is 4 m and θ is 1/60 °, w = (4 m / 5 m) × 1/60 ° = 1160 μm. When x = 40 cm and θ is 1/60 °, w = (0.4 m / 5 m) × 1/60 ° = 116 μm. Therefore, the width _{W 1} of the light emitting element 102 in the first direction, for example, is preferably 1160μm or less, the width _{W 3} of the width _{W 2} and a second non-light-emitting region 108 of the first non-light-emitting region 106, for example, the One electrode is preferably 120 μm or less. Incidentally, to increase when decreasing the width _{W 3} of the width _{W 2} and a second non-light-emitting region 108 of the first non-light-emitting region 106, the aperture ratio of the light emitting portion 104 (area ratio of the light emitting element 102 to the whole of the light emitting portion 104) be able to. Thereby, the brightness | luminance of the light emission part 104 can be raised.

  5 is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 6 is a cross-sectional view taken along the line BB in FIG. As described above, the first terminal 150 has a configuration in which the second layer 154 is stacked on the end portion (first layer 152) of the first electrode 120, and the second terminal 160 has the first layer. The second layer 164 is stacked on the 162.

  The organic layer 130 is sealed with a sealing member 180. A hygroscopic agent 190 is provided in a space sealed between the sealing member 180 and the substrate 110 (hereinafter referred to as a sealing space). In the example shown in this drawing, the hygroscopic agent 190 is fixed to the surface of the sealing member 180 that faces the substrate 110.

  The edge of the sealing member 180 is fixed to the substrate 110 or a layer formed on the substrate 110 with an insulating resin layer 184 interposed therebetween. Thereby, the sealing region 182 is formed. The resin layer 184 is formed in a ring shape using, for example, a liquid adhesive. In the example shown in the drawing, the resin layer 184 is located between the light emitting unit 104 and the first terminal 150 and between the light emitting unit 104 and the second terminal 160. As described above, the light emitting unit 104 is hermetically sealed by the sealing member 180.

  Further, as shown in FIG. 6, the first insulating layer 174 of the insulating layer 170 is provided with a convex portion 175 due to the auxiliary electrode 124, and the second insulating layer 176 has a concave portion due to the opening 122. 177 is formed. In other words, the convex portion 175 overlaps the auxiliary electrode 124, and the second insulating layer 176 overlaps the opening 122.

  Next, a method for manufacturing the light emitting device 100 according to this embodiment will be described. First, a conductive film to be the first electrode 120 is formed on the substrate 110 by using, for example, a vapor deposition method or a sputtering method. Next, a resist pattern is formed on the conductive film, and the conductive film is etched using the resist pattern as a mask. As a result, the first electrode 120 (including the first layer 152 of the first terminal 150) and the first layer 162 of the second terminal 160 are formed. An opening 122 is also formed. Thereafter, the resist pattern is removed.

  Next, a conductive film to be the auxiliary electrode 124 is formed over the substrate 110. Next, a resist pattern is formed on the conductive film, and the conductive film is etched using the resist pattern as a mask. Thereby, the auxiliary electrode 124, the second layer 154 of the first terminal 150, and the second layer 164 of the second terminal 160 are formed. Thereafter, the resist pattern is removed.

  Next, an insulating photosensitive material to be the insulating layer 170 is formed on the first electrode 120 by, for example, a coating method. Next, the photosensitive material is exposed and developed. Thereby, the insulating layer 170 and the opening 172 are formed. At this time, a convex portion 175 and a concave portion 177 are also formed. Next, the organic layer 130 is formed in the opening 172, and the second electrode 140 is formed on the organic layer 130 and the insulating layer 170 by a sputtering method. Thereafter, the sealing member 180 is attached to the substrate 110.

  FIG. 7 is a diagram for explaining an example of a method for forming the organic layer 130. In the example shown in the figure, at least one layer of the organic layer 130 is a coating film, and is formed by applying a liquid coating material 210 from the nozzle 200 and then drying it. At this time, since the solvent evaporates from the coating material 210, the volume of the organic layer 130 becomes smaller than the volume of the coating material 210. Therefore, when the coating material 210 is applied only on the first electrode 120, the area of the coating material decreases as the solvent evaporates, and as a result, a region where the organic layer 130 is not formed in the opening 172 may be formed. is there. In order to suppress this, the coating material 210 may be disposed also on the first insulating layer 174 and the second insulating layer 176 of the insulating layer 170.

  On the other hand, when the nozzle 200 is disposed on the first insulating layer 174 and the second insulating layer 176 and the coating material 210 is directly applied to the first insulating layer 174 and the second insulating layer 176, the coating flows into the opening 172. It becomes difficult to control the amount of the material 210. In this case, the thickness of the organic layer 130 varies.

  For this reason, it is preferable to discharge a large amount of the coating material 210 from above the opening 172 and to crawl up the coating material 210 from the side surfaces to the top surface of the first insulating layer 174 and the second insulating layer 176 using a capillary phenomenon. Here, when the opening 122 and the auxiliary electrode 124 are brought close to each other and covered with the same portion of the insulating layer 170, the convex portion 175 and the concave portion 177 are formed side by side in the same portion of the insulating layer 170. Then, the coating material 210 is less likely to scoop up the insulating layer 170 due to the pinning effect by the convex portions 175 and the concave portions 177. In this case, there remains a possibility that a region where the organic layer 130 is not formed in the opening 172 is formed. In this embodiment, since the first insulating layer 174 and the second insulating layer 176 are formed separately, the above-described pinning effect can be reduced. Therefore, the possibility that a region where the organic layer 130 is not formed in the opening 172 can be reduced.

  In this embodiment, the opening 122 and the auxiliary electrode 124 are separated from each other, and the light emitting element 102 is provided therebetween. Therefore, the non-light-emitting region (the first non-light-emitting region 106 and the first non-light-emitting region 106 and the light-emitting element 102) is compared with the case where the opening 122 and the auxiliary electrode 124 are brought close to each other and are covered with the same portion of the insulating layer 170 The width of the second non-light emitting region 108) becomes narrow. Therefore, it becomes difficult for a person to visually recognize the non-light-emitting region of the light-emitting device 100.

  In particular, when the auxiliary electrode 124 is formed by a coating method, it may be difficult to reduce the width of the auxiliary electrode 124 due to the performance of the coating apparatus. In particular, the width of the auxiliary electrode using a coating apparatus sold at the time of filing of the present application is larger than the width of the auxiliary electrode 124 obtained by etching. For this reason, when the opening 122 and the auxiliary electrode 124 are brought close to each other and covered with the same portion of the insulating layer 170, the width of the non-light emitting region is particularly wide. In contrast, in the present embodiment, the opening 122 and the auxiliary electrode 124 are separated from each other, and the light emitting element 102 is provided therebetween. Therefore, even when the auxiliary electrode 124 is formed by a coating method, it becomes difficult for a person to visually recognize the non-light-emitting region of the light-emitting device 100.

  For example, when the auxiliary electrode 124 is formed by etching, the cross-sectional shape of the auxiliary electrode 124 may be an inverted trapezoid. In this case, the upper part of the end of the side surface of the auxiliary electrode 124 may be broken. When the opening 122 is positioned near the auxiliary electrode 124, the bent portion of the auxiliary electrode 124 fits into the opening 122, and there is a possibility that the adjacent light emitting elements 102 are short-circuited. In this embodiment, this possibility can be reduced.

  As mentioned above, although embodiment and the Example were described with reference to drawings, these are illustrations of this invention and can also employ | adopt various structures other than the above.

100 light emitting device 102 light emitting element (light emitting region)
104 light emitting unit 106 first non-light emitting region 108 second non light emitting region 110 substrate 120 first electrode 122 opening 124 auxiliary electrode (conductive layer)
130 Organic layer (coating film)
140 Second electrode 170 Insulating layer 174 First insulating layer 175 Convex part 176 Second insulating layer 177 Concave part 178 Third insulating layer

Claims (3)

A substrate,
A light emitting unit formed on the substrate and having a first electrode, a second electrode overlapping the first electrode, and an organic layer positioned between the first electrode and the second electrode;
A conductive layer formed on a portion of the first electrode;
With
The first electrode has an opening;
A first insulating layer on the conductive layer at a position different from the opening;
A second insulating layer overlying the opening;
With
The first insulating layer has a convex portion at a position overlapping the conductive layer,
The light emitting device, wherein the second insulating layer has a recess at a position overlapping the opening. The light-emitting device according to claim 1.
The organic layer has a coating film,
The side surface of the first insulating layer and the side surface of the second insulating layer are light emitting devices covered with the coating film. The light-emitting device according to claim 2.
The light emitting unit includes a first non-light emitting region that overlaps the first insulating layer, a light emitting region, a second non-light emitting region that overlaps the second insulating layer, the light emitting region, the first non-light emitting region, and the second non-light emitting region. A third insulating layer surrounding the light emitting region, and a third non-light emitting region overlapping the third insulating layer,
The light emitting region is a light emitting device provided between the first non-light emitting region and the second non light emitting region.

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