WO2017183118A1

WO2017183118A1 - Light-emitting device

Info

Publication number: WO2017183118A1
Application number: PCT/JP2016/062432
Authority: WO
Inventors: 中馬　隆
Original assignee: パイオニア株式会社
Priority date: 2016-04-19
Filing date: 2016-04-19
Publication date: 2017-10-26

Abstract

A first end part (110a) of a first electrode (110) is closer to one second region (102b). A second end part (110b) of the first electrode (110) is closer to another second region (102b). A first end part (150a) of an insulating layer (150) is closer to the one second region (102b). A second end part (150b) of the insulating layer (150) is closer to the another second region (102b). In the direction from the first region (102a) to the one second region (102b), the first end part (110a) of the first electrode (110) is located farther on the outside than the first end part (150a) of the insulating layer (150). In the direction from the first region (102a) to the another second region (102b), the second end part (110b) of the first electrode (110) is located farther on the outside than the second end part (150b) of the insulating layer (150).

Description

Light emitting device

The present invention relates to a light emitting device.

In recent years, light emitting devices including organic light emitting diodes (OLEDs) have been developed. Such a light-emitting device has a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode. The first electrode is an anode and the second electrode is a cathode. The organic layer emits light by a voltage between the first electrode and the second electrode.

Patent Document 1 describes an example of a light emitting device including an OLED. This light-emitting device has a substrate, a first electrode, an organic layer, a second electrode, and two insulating layers. The first electrode and the two insulating layers are on the substrate. The first electrode is sandwiched between two insulating layers. The organic layer is on the first electrode and sandwiched between two insulating layers. The second electrode covers the organic layer and the two insulating layers, and extends to the outside of the two insulating layers.

Patent Document 2 also describes an example of a light emitting device including an OLED. A first electrode, an organic layer, a second electrode, and a plurality of insulating layers are included. The plurality of insulating layers are on the first electrode. The organic layer covers the first electrode and the plurality of insulating layers. The second electrode covers the first electrode and the plurality of insulating layers on the organic layer.

Japanese translation of PCT publication No. 2004-527088 JP 2014-154404 A

In recent years, transflective OLED panels have been developed. In a transflective OLED panel, a plurality of light emitting units may be arranged in a stripe pattern on a substrate. In such a transflective OLED panel, an insulating layer may be provided around each light emitting unit. The insulating layer is made of, for example, an organic insulating material, specifically, for example, polyimide. As a result of studies by the present inventor, it has been clarified that such an insulating layer easily peels from the substrate when the substrate is made of a specific material (for example, glass).

An example of a problem to be solved by the present invention is to suppress the separation of the insulating layer from the substrate with a simple structure.

The invention described in claim 1
A substrate including a first region and a second region aligned with the first region;
A first electrode on the first region and not on the second region;
An insulating layer on the first electrode;
An organic layer on the first electrode;
A second electrode on the organic layer;
With
Each of the first electrode and the insulating layer has a first end on the second region side,
In the direction from the first region to the second region, the first end portion of the first electrode is a light emitting device that is located outside the first end portion of the insulating layer.

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 shows the light-emitting device which concerns on embodiment. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 3 is a cross-sectional view taken along the line BB in FIG. It is a figure which shows the 1st modification of FIG. It is a figure which shows the 2nd modification of FIG. It is a figure which shows the 3rd modification of FIG.

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 showing a light emitting device 10 according to the embodiment. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 3 is a cross-sectional view taken along the line BB of FIG. The light emitting device 10 includes a substrate 100, a first electrode 110, an organic layer 120, a second electrode 130, and an insulating layer 150. The substrate 100 includes a plurality of first regions 102a and a plurality of second regions 102b. The plurality of first regions 102a and the plurality of second regions 102b are arranged alternately. In other words, one and the other of the two second regions 102b adjacent to each other face each other across the first region 102a. The first electrode 110 is on the first region 102a and not on the second region 102b. The organic layer 120 is on the first electrode 110. The insulating layer 150 is on the first electrode 110. The second electrode 130 is on the organic layer 120. The first electrode 110 has a first end 110a and a second end 110b. The first end portion 110a is on the one second region 102b side. The second end portion 110b is on the other second region 102b side, in other words, on the opposite side of the first end portion 110a. The insulating layer 150 has a first end 150a and a second end 150b. The first end 150a is on the one second region 102b side. The second end 150b is on the other second region 102b side, in other words, on the opposite side of the first end 150a. In the direction from the first region 102 a toward the one second region 102 b, the first end 110 a of the first electrode 110 is outside the first end 150 a of the insulating layer 150. In the direction from the first region 102 a toward the other second region 102 b, the second end portion 110 b of the first electrode 110 is outside the second end portion 150 b of the insulating layer 150. Details will be described below.

In the example shown in FIGS. 1 to 3, the light emitting device 10 is a transflective OLED panel. As shown in FIG. 1, the light emitting device 10 includes a plurality of light emitting units 140. Each light emitting unit 140 has a longitudinal direction. The plurality of light emitting units 140 are arranged along a direction intersecting (specifically, orthogonal to) the longitudinal direction of each light emitting unit 140. In other words, the plurality of light emitting units 140 are arranged in a stripe shape. When light is emitted from the plurality of light emitting units 140, light is emitted over the entire surface from one end to the other end of the plurality of light emitting units 140 from an area somewhat distant from the light emitting device 10 in human vision. Looks like. When light is not emitted from the plurality of light emitting units 140, an object on the second surface 104 side of the substrate 100 can be seen through from the first surface 102 side of the substrate 100 by human vision.

As shown in FIG. 1, the light emitting device 10 includes a substrate 100, a first conductive layer 210, a second conductive layer 230, and a plurality of second electrodes 130. The first conductive layer 210 includes a plurality of first electrodes 110, a first terminal 112, and a plurality of first wirings 114. The first electrode 110, the first terminal 112, and the first wiring 114 are different portions of the first conductive layer 210. The second conductive layer 230 has a second terminal 132 and a plurality of second wirings 134. The second terminal 132 and the second wiring 134 are different portions of the second conductive layer 230. As shown in FIG. 3, the second electrode 130 is connected to the second terminal 132 via the second wiring 134.

The plurality of first electrodes 110 are arranged in a line. Specifically, each first electrode 110 has a longitudinal direction. The plurality of first electrodes 110 are arranged along a direction intersecting (specifically, orthogonal) to the longitudinal direction of each first electrode 110. In other words, the plurality of first electrodes 110 are arranged in a stripe shape. Each of the plurality of first electrodes 110 is connected to the first terminal 112 via each of the plurality of first wirings 114. In the example illustrated in FIG. 1, the first terminal 112 has a longitudinal direction along a direction intersecting the longitudinal direction of the first electrode 110 (specifically, a direction orthogonal to the first electrode 110). A voltage can be applied to each first electrode 110 via the first terminal 112. The first terminal 112 can be connected to an external element (not shown) via a conductive member (for example, a bonding wire or a lead terminal). As a result, a voltage can be applied to the first electrode 110 from an external element.

The plurality of second electrodes 130 are arranged in a line. Specifically, each second electrode 130 has a longitudinal direction. The plurality of second electrodes 130 are arranged along a direction intersecting (specifically, orthogonal to) the longitudinal direction of each second electrode 130. In other words, the plurality of second electrodes 130 are arranged in a stripe shape. Each of the plurality of second electrodes 130 is connected to the second terminal 132 via each of the plurality of second wirings 134. In the example illustrated in FIG. 1, the second terminal 132 has a longitudinal direction along a direction intersecting the longitudinal direction of the second electrode 130 (specifically, an orthogonal direction). The first terminal 112 and the second terminal 132 face each other across the plurality of first electrodes 110 and the plurality of second electrodes 130. A voltage can be applied to each second electrode 130 via the second terminal 132. The second terminal 132 can be connected to an external element (not shown) via a conductive member (for example, a bonding wire or a lead terminal). Thereby, a voltage can be applied to the second electrode 130 from an external element.

As shown in FIG. 2, the light emitting device 10 includes a substrate 100, a first electrode 110, an organic layer 120, a second electrode 130, an insulating layer 150, and a conductive portion 160.

The substrate 100 has a first surface 102 and a second surface 104. In the example shown in FIG. 1, the shape of the substrate 100 is a rectangle. However, the shape of the substrate 100 is not limited to a rectangle, and may be another shape. The second surface 104 is on the opposite side of the first surface 102 and is the back surface of the substrate 100. The substrate 100 is made of a translucent material (for example, glass or resin). On the first surface 102 of the substrate 100, there is a light emitting unit 140. The light from the light emitting unit 140 passes through the substrate 100 and is emitted from the second surface 104 of the substrate 100.

The substrate 100 may have flexibility or may not have flexibility. When the substrate 100 has 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 has flexibility and is made of glass, the thickness of the substrate 100 is, for example, 200 μm or less. When the substrate 100 is flexible and made of a resin, the substrate 100 includes, for example, PEN (polyethylene naphthalate), PES (polyethersulfone), PET (polyethylene terephthalate), or polyimide. The first surface 102 (preferably both the first surface 102 and the second surface 104) of the substrate 100 may be covered with an inorganic insulating layer (for example, SiN _x or SiON). In this case, even if the substrate 100 includes a material (for example, resin) having a high water vapor transmission rate, the water vapor is prevented from reaching the first surface 102 of the substrate 100.

The first conductive layer 210 (the first electrode 110, the first terminal 112, and the first wiring 114) is made of a light-transmitting conductive material, such as a metal oxide, more specifically, for example, ITO (Indium Tin Oxide), It consists of IZO (Indium Zinc Oxide), IWZO (Indium Tungsten Zinc Oxide) or ZnO (Zinc Oxide). The film thickness of the first conductive layer 210 is, for example, not less than 10 nm and not more than 500 nm. As another example, the first conductive layer 210 may be a stacked film including a metal oxide layer and a metal layer or a stacked film including a metal oxide layer and an alloy layer. The film thickness of the metal layer and the alloy layer is extremely thin, for example, 10 nm or more and 50 nm or less. As yet another example, the first conductive layer 210 may be made of a conductive organic material (eg, carbon nanotube or PEDOT / PSS). In addition to the first electrode 110, the first terminal 112 or the first wiring 114 may be made of a metal layer or a metal alloy layer. In this case, the first terminal 112 and the first wiring 114 are preferably made of the same material as that of the conductive portion 160 (not shown).

The organic layer 120 has, for example, a hole injection layer, a light emitting layer, and an electron injection layer. The light emitting layer is between the hole injection layer and the electron injection layer. The hole injection layer is connected to the first electrode 110. In other words, the first electrode 110 functions as an anode. The electron injection layer is connected to the second electrode 130. In other words, the second electrode 130 functions as a cathode. There may be a hole transport layer between the hole injection layer and the light emitting layer. There may be an electron transport layer between the light emitting layer and the electron injection layer. In the light emitting layer, electrons and holes are recombined. Thereby, light is emitted from the light emitting layer. The organic layer 120 is formed by, for example, vapor deposition or a coating process or a combination thereof.

The second electrode 130 is made of, for example, a metal selected from the first group consisting of Al, Au, Ag, Pt, Mg, Sn, Zn, and In or an alloy of a metal selected from the first group. Contains a metal layer. 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. However, the second electrode 130 may be formed using the material exemplified as the material of the first electrode 110. The second electrode 130 is formed by sputtering or vapor deposition, for example.

The first region 102 a of the first surface 102 of the substrate 100 is a region from the first end 110 a to the second end 110 b of the first electrode 110. In other words, the entire first region 102 a overlaps the entire first electrode 110. The second region 102b of the first surface 102 of the substrate 100 is a region from one first end 110a to the other second end 110b of the first electrodes 110 adjacent to each other.

The insulating layer 150 is on the first electrode 110. The insulating layer 150 is made of, for example, an organic insulating material, specifically, for example, polyimide. The insulating layer 150 includes a first portion 152 and a second portion 154. The first portion 152 has a first end 150a. The second portion 154 has a second end 150b. The second portion 154 is separated from the first portion 152. The first electrode 110, the organic layer 120, and the second electrode 130 overlap between the first portion 152 and the second portion 154.

More specifically, the insulating layer 150 has an opening 156 between the first portion 152 and the second portion 154. In the example shown in FIG. 1, the shape of the opening 156 is a rectangle. The light emitting unit 140 is defined by the opening 156. Specifically, a part of the first electrode 110, a part of the organic layer 120, and a part of the second electrode 130 are located in the opening 156. A part of the first electrode 110, a part of the organic layer 120, and a part of the second electrode 130 function as the light emitting unit 140.

In the example shown in FIG. 2, the width of the lower end of the first portion 152 (second portion 154) is wider than the width of the upper end of the first portion 152 (second portion 154). More specifically, the first portion 152 (second portion 154) has an inner surface facing the opening 156 side and an outer surface opposite to the inner surface. The inner side surface of the first portion 152 (second portion 154) is inclined so that the upper end of the inner side surface is located outside the lower end of the inner side surface. The outer surface of the first portion 152 (second portion 154) is inclined so that the upper end of the outer surface is located inside the lower end of the outer surface. In the example shown in FIG. 2, the first end 150 a is the lower end of the outer surface of the first portion 152. The second end 150 b is the lower end of the outer surface of the second portion 154. The light emitting unit 140 is defined by the lower end of the inner surface of the first portion 152 and the lower end of the inner surface of the second portion 154.

Conventionally, in a passive matrix display, anodes are formed in a stripe pattern. In general, an insulating layer is formed so as to cover the anode end so that the anode and a cathode formed in a shape perpendicular to the anode do not electrically short-circuit at the anode end. At this time, since the insulating layer covers the adjacent anode end portions, the insulating layer itself is in partial contact with the glass substrate. On the other hand, in the transflective OLED panel, the adjacent anodes are largely separated. In the conventional transflective OLED panel, the insulating layer covers the anode end and is formed in contact with the glass substrate. On the other hand, in the example shown in FIG. 2, in the width direction of the first electrode 110, the first end 150a of the insulating layer 150 is inside the first end 110a of the first electrode 110. In other words, the insulating layer The width of 150 can be reduced. Specifically, in the example shown in FIG. 2, the width of the first portion 152 (the distance between the lower end of the inner surface of the first portion 152 and the lower end of the outer surface of the first portion 152 (first end portion 150a)). Can be, for example, 30 μm or more and 50 μm or less. Similarly, the width of the second portion 154 (the distance between the lower end of the inner surface of the second portion 154 and the lower end (second end portion 150b) of the outer surface of the second portion 154) is, for example, 30 μm or more and 50 μm or less. can do.

The distance from the first end 150a to the second end 150b of the insulating layer 150 is the distance from the first end 110a to the second end 110b of the first electrode 110 (that is, the width of the first electrode 110). For example, it is 80% or more and 95% or less, preferably 90% or more and 100% or less. When the ratio is 80% or more, the width of the opening 156 (light emitting unit 140) can be increased. When the ratio is 95% or less, even if the insulating layer 150 is deviated from the design position, in the actual light emitting device 10, the insulating layer 150 is reliably positioned on the first electrode 110.

In the example shown in FIG. 2, the organic layer 120 has a first end 120a and a second end 120b. The first end 120 a is on the same side as the first end 110 a of the first electrode 110. The second end 120b is on the same side as the second end 110b of the first electrode 110, in other words, on the opposite side of the first end 120a. In the width direction of the first electrode 110, the first end 120 a is inside the first end 150 a of the insulating layer 150, more specifically, the upper end of the outer surface of the first portion 152 of the insulating layer 150. And the upper end of the inner surface of the first portion 152 of the insulating layer 150. In the width direction of the first electrode 110, the second end 120 b is on the inner side of the second end 150 b of the insulating layer 150, and more specifically, the upper end of the outer surface of the second portion 154 of the insulating layer 150. And the upper end of the inner surface of the second portion 154 of the insulating layer 150.

The second electrode 130 has a first end portion 130a and a second end portion 130b. The first end portion 130 a is on the same side as the first end portion 110 a of the first electrode 110. The second end 130b is on the same side as the second end 110b of the first electrode 110, in other words, on the opposite side of the first end 130a. In the width direction of the first electrode 110, the first end portion 130 a is on the inner side of the first end portion 150 a of the insulating layer 150, and more specifically, the upper end of the outer surface of the first portion 152 of the insulating layer 150. And the upper end of the inner surface of the first portion 152 of the insulating layer 150, and more specifically, inside the first end portion 120 a of the organic layer 120. In the width direction of the first electrode 110, the second end 120 b is on the inner side of the second end 150 b of the insulating layer 150, and more specifically, the upper end of the outer surface of the second portion 154 of the insulating layer 150. And the upper end of the inner surface of the second portion 154 of the insulating layer 150, and more specifically, inside the second end portion 120 b of the organic layer 120.

The first end 130a and the second end 130b of the second electrode 130 are separated by a distance d1. The first end 130a of the second electrode 130 and the first end 150a of the insulating layer 150 (or the second end 130b of the second electrode 130 and the second end 150b of the insulating layer 150) are separated by a distance d2. Yes. One first end 150a and the other second end 150b of the insulating layers 150 adjacent to each other are separated by a distance d3. The distance d3 may be wider or narrower than the distance d1. The distance d2 is smaller than the distance d3. Furthermore, as described above, in the example illustrated in FIG. 2, the width of the insulating layer 150 can be reduced. For this reason, the distance d2 can be made considerably smaller than the distance d3. Specifically, the distance d2 (second distance) can be 0.2 times or less of the distance d3 (first distance) (d2 may be 0).

The ratio d2 / d1 of the distances d1 and d2 is, for example, 0 or more and 0.2 or less (d2 may be 0). The ratio d3 / d1 of the distances d1 and d3 is, for example, not less than 0.3 and not more than 3. The distance d1 is, for example, not less than 50 μm and not more than 500 μm. The distance d2 is, for example, 0 μm or more and 100 μm or less. The distance d3 is, for example, not less than 15 μm and not more than 1000 μm.

Compared to a conventional transflective OLED panel in which the first end 150a of the insulating layer 150 is formed outside the first end 110a of the first electrode 110 so as to be in contact with the substrate 100, in the example shown in FIG. The light transmittance of the light emitting device 10 is increased. Specifically, the region having the distance d1 having the second electrode 130 has the lowest light transmittance among the region having the distance d1, the region having the distance d2, and the region having the distance d3. In addition, a part of the insulating layer 150 is located in the region of the distance d2, and has the next lowest light transmittance. On the other hand, neither the second electrode 130 nor the insulating layer 150 is located in the region of the distance d3. For this reason, the light transmittance at the distance d3 is higher than the light transmittance at the distance d1 and the distance d2. When the region of the distance d1 is constant (for example, the first end portion 130a of the second electrode 130 is the upper end of the outer surface of the first portion 152 of the insulating layer 150 and the upper end of the inner surface of the first portion 152 of the insulating layer 150). And the second end portion 130b of the second electrode 130 is between the upper end of the outer surface of the second portion 154 of the insulating layer 150 and the upper end of the inner surface of the second portion 154 of the insulating layer 150). In the example shown in this figure, since the first end 150a of the insulating layer 150 is inside the first end 110a of the first electrode 110, the distance d3 becomes longer and the distance d2 becomes shorter than in the prior art. For this reason, the light transmittance of the light emitting device 10 is increased.

Furthermore, in the example shown in this figure, the light emitting device 10 is suppressed from functioning as a filter that blocks light of a specific wavelength. Specifically, the light transmittance of the insulating layer 150 may differ depending on the wavelength. When the light transmittance of the insulating layer 150 differs depending on the wavelength, the light emitting device 10 can function as a filter that blocks light having a low light transmittance of the insulating layer 150 when the width of the insulating layer 150 is wide. On the other hand, in this embodiment, as described above, the distance d2 is smaller than the distance d3 and smaller than d2 of the conventional transflective OLED panel. In other words, when the region of the distance d1 is constant, the width of the insulating layer 150 can be reduced. For this reason, it is suppressed that the light-emitting device 10 functions as a filter which interrupts | blocks the light of a specific wavelength.

The conductive part 160 extends linearly along the longitudinal direction of the first electrode 110. The conductive part 160 is connected to the first electrode 110. The conductive part 160 is provided to suppress a voltage drop of the first electrode 110. In the example illustrated in FIG. 2, the conductive portion 160 is covered with the first portion 152 on the first electrode 110. Note that the conductive portion 160 may be formed on the second portion 154 side. The conductivity of the conductive part 160 is higher than the conductivity of the first electrode 110. The conductive portion 160 is made of metal or a metal alloy, and is, for example, MAM (Mo / Al / Mo laminate).

Next, a method for manufacturing the light emitting device 10 will be described. First, the first conductive layer 210 (first electrode 110, first terminal 112 and first wiring 114) and second conductive layer 230 (second terminal 132 and second wiring 134) are formed on the first surface 102 of the substrate 100. Form. Specifically, ITO (Indium Tin Oxide) is formed as a conductive layer on the first surface 102 of the substrate 100 by sputtering. Next, a mask film (specifically, a photoresist) having a desired pattern is formed on the conductive layer. The mask film covers a region where the first conductive layer 210 is formed and a region where the second conductive layer 230 is formed. Next, the conductive layer is etched with an etchant using the mask film as a mask. Thereby, the first conductive layer 210 and the second conductive layer 230 are formed. At this time, the width of the first electrode 110 (the distance between the first end 110a and the second end 110b) is 300 μm, and the distance between the ends of the adjacent first electrodes 110 (the short side of the second region 102b). ) Was 400 μm.

Next, the conductive part 160 is formed on the first electrode 110. Specifically, a MAM (Mo / Al / Mo laminate) is formed on the first electrode 110 as a conductive layer. Next, a mask film (specifically, a photoresist) having a desired pattern is formed on the conductive layer. The mask film covers a region where the conductive portion 160 is formed. Next, the conductive layer is etched with an etchant using the mask film as a mask. Thereby, the conductive part 160 is formed. At this time, the line width of the conductive portion 160 was 20 μm.

Next, the insulating layer 150 is formed on the first electrode 110 and the conductive part 160. Specifically, photosensitive polyimide is applied on the first surface 102 of the substrate 100, the first electrode 110, and the conductive portion 160, and dried. Next, the photosensitive polyimide is patterned into a desired pattern by exposure and development. The developed polyimide pattern is positioned inside both ends (first end portion 110a and second end portion 110b) of the first electrode 110 in the width direction of the first electrode 110. Next, the polyimide is cured by baking. Thereby, the insulating layer 150 is formed. The distance between the first end 110a of the first electrode 110 and the first end 150a of the insulating layer 150 and the distance between the second end 110b of the first electrode 110 and the second end 150b of the insulating layer 150 are as follows. 10 μm. Moreover, the width | variety of the lower end of the 1st part 152 and the 2nd part 154 was 40 micrometers.

Next, the organic layer 120 including the light emitting layer is formed by vapor deposition. At this time, the organic layer 120 is formed on the first electrode 110 provided with the opening in the insulating film 150 using a shadow mask having a stripe-like opening. Next, Al is formed as the second electrode 130 by vapor deposition. At this time, Al is formed in a stripe shape on the organic layer 120 using a shadow mask whose opening in the short side direction of the stripe is smaller than the shadow mask used in the organic layer 120. Finally, sealing for moisture prevention is performed, and the light emitting device 10 is manufactured.

As described above, according to the present embodiment, the first end portion 110a and the second end portion 110b of the first electrode 110 are outside the first end portion 150a and the second end portion 150b of the insulating layer 150, respectively. This prevents the first end 150a and the second end 150b of the insulating layer 150 from contacting the substrate 100. For this reason, even when the insulating layer 150 is made of a material that is easily peeled from the substrate 100, the insulating layer 150 is prevented from being peeled from the substrate 100.

FIG. 4 is a diagram showing a first modification of FIG. As shown in the figure, the conductive portion 160 may be covered with the first electrode 110. Specifically, the conductive portion 160 is on the first surface 102 of the substrate 100 and below the first portion 152 of the insulating layer 150. Note that the conductive portion 160 may be formed on the second portion 154 side of the insulating layer 150. The conductive part 160 is covered with the first electrode 110. Also in the example shown in this figure, the first end portion 110a and the second end portion 110b of the first electrode 110 are outside the first end portion 150a and the second end portion 150b of the insulating layer 150, respectively. This prevents the first end 150a and the second end 150b of the insulating layer 150 from contacting the substrate 100.

FIG. 5 is a diagram showing a second modification of FIG. As shown in the figure, since the organic layer 120 is transparent, the organic layer 120 may be located over the plurality of first regions 102a and the plurality of second regions 102b. In other words, the organic layer 120 does not have an end (for example, the first end 120a or the second end 120b in FIG. 2) between the light emitting units 140 adjacent to each other. In the example shown in this figure, even if the first end portion 130a of the second electrode 130 is positioned outside the first end portion 150a of the insulating layer 150, the first end portion 130a of the second electrode 130 and the first end portion 130a The organic layer 120 is positioned between the one electrode 110. For this reason, a short circuit between the second electrode 130 and the first electrode 110 is suppressed. Similarly, even if the second end 130b of the second electrode 130 is positioned outside the second end 150b of the insulating layer 150, the second end 130b of the second electrode 130 and the first electrode 110 The organic layer 120 is positioned therebetween. For this reason, a short circuit between the second electrode 130 and the first electrode 110 is suppressed.

FIG. 6 is a diagram showing a third modification of FIG. In the example shown in this figure, the insulating layer 150 does not have the opening 156 (FIG. 2). More specifically, the first portion 152 of the insulating layer 150 has a first end 150a and a second end 150b. In the direction from the first region 102 a to the second region 102 b, the second end 150 b of the insulating layer 150 is between the first end 150 a of the insulating layer 150 and the second end 110 b of the first electrode 110. The insulating layer 150 includes a portion other than the first portion 152 (for example, the second portion 154 in FIG. 2) between the second end portion 150 b of the first portion 152 and the second end portion 110 b of the first electrode 110. Not done. In addition, the width | variety (distance between the 1st edge part 150a of the 1st part 152 and the 2nd edge part 150b) of the 1st part 152 is 30 micrometers or more and 50 micrometers or less, for example.

The first portion 152 of the insulating layer 150 covers the conductive portion 160 on the first electrode 110. This prevents the conductive part 160 from being short-circuited with the second electrode 130. In the example shown in the drawing, the light emitting unit 140 is a region from the second end 150b of the first portion 152 to the second end 130b of the second electrode 130.

Also in the example shown in this figure, the first end portion 110a and the second end portion 110b of the first electrode 110 are respectively from the first end portion 150a and the second end portion 150b of the insulating layer 150 (first portion 152). Is also on the outside. This prevents the first end 150a and the second end 150b of the insulating layer 150 from contacting the substrate 100.

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.

Claims

A substrate including a first region and a second region aligned with the first region;
A first electrode on the first region and not on the second region;
An insulating layer on the first electrode;
An organic layer on the first electrode;
A second electrode on the organic layer;
With
Each of the first electrode and the insulating layer has a first end on the second region side,
In the direction from the first region to the second region, the first end portion of the first electrode is located outside the first end portion of the insulating layer.
The light-emitting device according to claim 1.
Each of the first electrode and the insulating layer has a second end opposite to the first end,
In the direction from the first region toward the opposite side to the second region, the second end portion of the first electrode is outside the second end portion of the insulating layer.
The light-emitting device according to claim 2.
The second electrode has a first end on the second region side and a second end on the opposite side of the first end,
In the direction from the first region toward the second region, the first end portion of the second electrode is inside the first end portion of the first electrode;
In the direction from the first region toward the opposite side to the second region, the second end portion of the second electrode is inside the second end portion of the first electrode.
The light emitting device according to claim 3.
The insulating layer has a first portion including the first end portion, and a second portion including the second end portion and spaced apart from the first portion,
The light emitting device, wherein the first electrode, the organic layer, and the second electrode overlap between the first portion and the second portion of the insulating layer.
The light-emitting device according to claim 4.
A conductive portion connected to the first electrode;
The light emitting device, wherein the conductive portion is covered with the first portion or the second portion of the insulating layer on the first electrode.
The light-emitting device according to claim 4.
A conductive portion connected to the first electrode;
The light emitting device, wherein the conductive portion is covered with the first electrode under the first portion or the second portion of the insulating layer.
The light emitting device according to any one of claims 4 to 6,
In the direction from the first region to the second region,
The width of the first portion of the insulating layer is not less than 30 μm and not more than 50 μm,
The width of the second portion of the insulating layer is a light emitting device having a width of 30 μm or more and 50 μm or less.
The light emitting device according to claim 3.
The insulating layer has a first portion including the first end and the second end;
In the direction from the first region toward the second region, the second end of the insulating layer is between the first end of the insulating layer and the second end of the second electrode;
The said insulating layer is a light-emitting device which does not have parts other than a said 1st part between the said 2nd edge part of the said 1st part, and the said 2nd edge part of the said 1st electrode.
The light-emitting device according to claim 8.
A conductive portion connected to the first electrode;
The light emitting device, wherein the conductive portion is covered with the first portion of the insulating layer on the first electrode.
The light-emitting device according to claim 8 or 9,
In the direction from the first region to the second region,
The width of the first portion of the insulating layer is a light emitting device having a width of 30 μm or more and 50 μm or less.
The light-emitting device according to any one of claims 1 to 10,
The substrate includes a plurality of first regions and a plurality of second regions arranged alternately,
The light emitting device, wherein the first electrode and the second electrode are on each first region and not on each second region.
The light-emitting device according to claim 11.
The organic layer is a light emitting device positioned over the plurality of first regions and the plurality of second regions.
The light emitting device according to any one of claims 4 to 7,
The substrate includes a plurality of first regions and a plurality of second regions arranged alternately,
In the direction from the first region toward the second region, the first end of one of the insulating layers and the second end of the other insulating layer of the first regions adjacent to each other are One distance away,
The first end of the second electrode of the one first region and the first end of the insulating layer are separated by a second distance in a direction from the first region toward the second region. ,
The light emitting device, wherein the second distance is not more than 0.2 times the first distance.