JP2022122345A - Light-emitting device - Google Patents

Abstract

To make the layout of a conductive portion electrically connected to an electrode forming a light-emitting portion uniform regardless of the layout of a display area.SOLUTION: A portion of a second electrode 132A which constitutes a light-emitting portion 140 on a first virtual line L1A and a portion of a first conductive portion 202 on the negative direction side in the first direction X are electrically connected to each other through a second opening 154 at a position shifted by a predetermined distance in the negative direction of the second direction Y from the first virtual line L1A in a first connection region 412A. A portion of the second electrode 132A which constitutes the light-emitting portion 140 on the second virtual line L2A and a portion of the second conductive portion 204 on the negative direction side in the first direction X are electrically connected to each other through a second opening 154 on the second virtual line L2A in the second connection region 414A.SELECTED DRAWING: Figure 1

Description

The present invention relates to light emitting devices.

In recent years, various light-emitting devices such as organic light-emitting diodes (OLEDs) have been developed. Light-emitting devices comprising OLEDs are used in various applications such as displays.

Patent Literature 1 describes an example of a light emitting device including an OLED. This light emitting device includes a plurality of first electrodes arranged in a predetermined direction and a plurality of second electrodes arranged in a direction orthogonal to the predetermined direction. In a region where the first electrode and the second electrode overlap each other, a plurality of light-emitting portions are defined in a matrix.

Patent Document 2 describes a COG (Chip On Glass) light emitting device. In this light-emitting device, a light-emitting portion provided on a substrate and an IC (integrated circuit) chip mounted on the substrate are electrically connected by wiring provided on the substrate.

JP 2007-280920 A JP 2018-81151 A

In a light-emitting device including a display area in which a plurality of light-emitting portions are arranged in a matrix, a plurality of electrodes such as a plurality of cathodes constituting the plurality of light-emitting portions are electrically connected to a plurality of conductive portions such as a plurality of wirings provided on a substrate. properly connected. When the electrode extends linearly, the electrode and the conductive portion overlap on an imaginary line passing through the electrode in parallel with the extending direction of the electrode. Therefore, when the electrodes are displaced in the direction perpendicular to the virtual lines according to the layout of the display area, it is necessary to displace the conductive portions in the direction perpendicular to the virtual lines. Therefore, when the layout of the display area differs according to the application of the light emitting device, it is necessary to prepare different layouts of the conductive portions according to the layout of the display area. However, preparing different layouts of the conductive portions according to the layout of the display area can lead to an increase in the manufacturing cost of the light emitting device.

One example of the problem to be solved by the present invention is to keep the layout of the conductive portions electrically connected to the electrodes forming the light emitting portion constant regardless of the layout of the display area.

The invention according to claim 1,
a plurality of first electrodes arranged in a first direction;
a plurality of second electrodes arranged in a second direction orthogonal to the first direction;
a plurality of conductive portions electrically connected to the plurality of second electrodes;
with
At least one of the plurality of second electrodes and at least one of the plurality of conductive portions define a region where the at least one of the plurality of second electrodes and the plurality of first electrodes overlap. The light-emitting device is electrically connected to each other at positions shifted in the second direction from a first imaginary line passing in the first direction.

1 is a plan view of a light emitting device according to Embodiment 1. FIG. FIG. 2 is a view of FIG. 1 with a conductive layer removed; FIG. 3 is a view of FIG. 2 with the first organic layer and the second organic layer removed; FIG. 4 is a view of FIG. 3 with an insulating layer and a plurality of partition walls removed; FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1; FIG. 10 is a plan view of a light emitting device according to Embodiment 2; FIG. 8 is a view of FIG. 7 with the conductive layer removed; FIG. 9 is a view of FIG. 8 with an organic layer removed; FIG. 10 is a view of FIG. 9 with an insulating layer and a plurality of partition walls removed;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

As used herein, the phrase "A is positioned on B" means, for example, that A is positioned directly on B with no other element (e.g., layer) positioned between A and B. or that another element (eg, layer) is partially or wholly located between A and B. Furthermore, expressions indicating orientation such as "up", "down", "left", "right", "front" and "back" are basically used in conjunction with the orientation of the drawings. The inventions described in the specification should not be construed as limited to the orientation of use.

In this specification, the expression "A and B overlap" means that at least part of A is in the same place as at least part of B in a projected image from a certain direction, unless otherwise specified. At this time, the plurality of elements may be in direct contact with each other, or may be separated from each other.

The anode herein refers to an electrode that injects holes into a layer containing a light emitting material (e.g., an organic layer), and the cathode refers to an electrode that injects electrons into a layer containing a light emitting material. . The terms "anode" and "cathode" may also refer to other terms such as "hole-injection electrode" and "electron-injection electrode" or "positive electrode" and "negative electrode".

As used herein, the expression "edge of A" means the boundary between A and other elements when viewed from one direction, and the expression "edge of A" refers to the part of A that includes the boundary. and the expression "end point of A" means a point on the boundary.

The term "light-emitting device" as used herein includes devices having light-emitting elements such as displays and lighting. In some cases, the “light emitting device” also includes wiring, an IC (integrated circuit), a housing, or the like that is directly, indirectly, or electrically connected to the light emitting element.

As used herein, the term "connection" refers to a state in which a plurality of elements are directly or indirectly connected. For example, even when a plurality of elements are connected via an adhesive or a joining member, the expression "the plurality of elements are connected" may be used. In addition, when there is a member capable of supplying or transmitting current, voltage or potential between multiple elements, and "the multiple elements are electrically connected", simply "the multiple elements are connected It is sometimes expressed as

In this specification, unless otherwise specified, expressions such as "first, second, A, B, (a), (b)" are for distinguishing elements, and the expressions indicate the essence of the element. , order, order, number, or the like is not limited.

In this specification, each member and each element may be singular or plural. provided, however, that this is not the case where the context makes clear "singular" or "plural".

As used herein, the expression "A contains B" means that A is not limited to being composed of only B, and that A can be composed of elements other than B, unless otherwise specified. .

In this specification, unless otherwise specified, the term "cross section" means a plane that appears when the light-emitting device is cut in the direction in which pixels, light-emitting materials, etc. are stacked.

The terms “does not have,” “does not include,” “is not located in,” etc. herein may mean that an element is completely excluded or that an element has no technical effect. It may mean that it exists to the extent that it does not have

In this specification, expressions describing temporal context such as "after", "following", "next", and "before" represent relative temporal relationships. , and the elements for which the temporal context is used are not necessarily consecutive. Expressions such as “immediately” or “directly” may be used to express that each element is continuous.

In this specification, unless otherwise specified, the expression "substantially parallel" also includes a state of obliqueness to the extent that it has a technical effect. For example, two elements A and B are positioned at an angle of -10° or more and 10° or less, and if there is no critical technical effect at an angle of -10° or more and 10° or less, "A and B are substantially parallel". A state in which two elements A and B are positioned at an angle of -10° or more and 10° or less due to a manufacturing error is also expressed as "A and B are substantially parallel." The expression "parallel" means that the two elements are parallel in the mathematical sense.

FIG. 1 is a plan view of a light emitting device 10A according to Embodiment 1. FIG. FIG. 2 is a view of FIG. 1 with conductive layer 130 removed. FIG. 3 is a diagram of FIG. 2 with the first organic layer 122A and the second organic layer 124A removed. FIG. 4 is a diagram of FIG. 3 with the insulating layer 150 and the plurality of partition walls 160A removed. FIG. 5 is a cross-sectional view taken along line AA of FIG. FIG. 6 is a cross-sectional view along BB in FIG. The substrate 100 shown in FIGS. 5 and 6 is not shown in FIGS. 1-4. In FIG. 4, the removed insulating layer 150 and the plurality of partition walls 160A are indicated by dotted lines.

1 to 6, the arrows indicating the first direction X, the second direction Y, or the third direction Z indicate that the positive direction of the direction indicated by the arrow is the direction from the proximal end to the distal end of the arrow, and It indicates that the negative direction of the direction indicated by the arrow is the direction from the tip of the arrow to the base. A white circle with a black dot indicating the first direction X, the second direction Y, or the third direction Z indicates that the positive direction of the direction indicated by the white circle with the black dot is the direction from the back of the paper surface to the front, and the white circle with the black dot indicates Indicates that the negative direction indicated is the direction from the front to the back of the page.

1 to 6, the first direction X is a direction parallel to one direction perpendicular to the thickness direction of the light emitting device 10A. Specifically, the first direction X is a direction parallel to rows of a plurality of light emitting units 140, which will be described later, arranged in a matrix. The positive direction of the first direction X is the direction from the left to the right of the row when viewed from the positive direction of the third direction Z described later. The negative direction of the first direction X is the direction from the right to the left of the row when viewed from the positive direction of the third direction Z. FIG. The second direction Y is a direction orthogonal to both the thickness direction of the light emitting device 10A and the first direction X. As shown in FIG. Also, the second direction Y is a direction parallel to the rows of the plurality of light emitting units 140 arranged in a matrix. The positive direction of the second direction Y is the direction from the bottom to the top of the row when viewed from the positive direction of the third direction Z. FIG. The negative direction of the second direction Y is the direction from top to bottom of the row when viewed from the positive direction of the third direction Z. FIG. The third direction Z is a direction parallel to the thickness direction of the light emitting device 10A. The positive direction of the third direction Z is the direction from the side where the substrate 100 is located toward the side where the light emitting section 140 is located. The negative direction of the third direction Z is the direction from the side where the light emitting section 140 is located toward the side where the substrate 100 is located.

The light emitting device 10A will be described with reference to FIGS. 1 to 6. FIG.

The light emitting device 10A includes a substrate 100, a plurality of first electrodes 110, a first organic layer 122A, a second organic layer 124A, a conductive layer 130, an insulating layer 150, a plurality of partition walls 160A, a plurality of first conductive portions 202 and a plurality of A second conductive portion 204 is provided.

The substrate 100 has translucency. The substrate 100 may be a single layer or multiple layers. The thickness of the substrate 100 in the third direction Z is, for example, 10 μm or more and 1000 μm or less. The substrate 100 is, for example, a glass substrate. The substrate 100 may be a resin substrate containing an organic material such as PEN (polyethylene naphthalate), PES (polyethersulfone), PET (polyethylene terephthalate), polyimide, or the like. When the substrate 100 is a resin substrate, an inorganic barrier layer (eg, SiN or SiON) is provided on at least one of the surface on the positive side in the third direction Z and the surface on the negative side in the third direction Z of the substrate 100. may be provided.

As shown in FIG. 4, the plurality of first electrodes 110 are arranged in the first direction X when viewed from the third direction Z. As shown in FIG. Further, each first electrode 110 extends in the second direction Y when viewed from the third direction Z. As shown in FIG. As shown in FIG. 5, the first electrode 110 is positioned on the positive side of the third direction Z of the substrate 100 . The first electrode 110 has translucency. The first electrode 110 functions as an anode. In one example, the first electrode 110 includes an oxide semiconductor such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IWZO (Indium Tungsten Zinc Oxide), ZnO (Zinc Oxide), and IGZO (Indium Gallium Zinc Oxide). contains.

The first organic layer 122A emits light of a predetermined color, for example yellow, by organic electroluminescence (EL). As shown in FIG. 2, when viewed from the third direction Z, the first organic layer 122A is a part of the region of the insulating layer 150 in which a plurality of first openings 152, which will be described later, are located, on the positive direction side in the second direction Y. overlaps with In addition, when viewed from the third direction Z, the first organic layer 122A does not overlap regions of the insulating layer 150 where a plurality of second openings 154, which will be described later, are located. Similar to the second organic layer 124A shown in FIG. 5, the first organic layer 122A is located on the positive side of the third direction Z of the substrate 100. As shown in FIG. A portion of the first organic layer 122A that is located between the partition walls 160A adjacent to each other in the second direction Y is located on the positive direction side of the third direction Z of the first electrode 110 . A portion of the first organic layer 122A located between the partition walls 160A adjacent to each other in the second direction Y and a portion of the first organic layer 122A located on the positive direction side of the partition wall 160A in the third direction Z are mutually fragmented.

The second organic layer 124A emits light of a color different from the color of the light emitted from the first organic layer 122A, for example blue light, by the organic EL. Alternatively, the second organic layer 124A may emit light of the same color as the light emitted from the first organic layer 122A. As shown in FIG. 2, when viewed from the third direction Z, the second organic layer 124A overlaps a part of the region of the insulating layer 150 where the plurality of first openings 152 are located on the negative direction side in the second direction Y. ing. In addition, when viewed from the third direction Z, the second organic layer 124A does not overlap the regions of the insulating layer 150 where the plurality of second openings 154 are located. As shown in FIG. 5, the second organic layer 124A is positioned on the positive direction side of the substrate 100 in the third direction Z. As shown in FIG. A portion of the second organic layer 124A located between the partition walls 160A adjacent in the second direction Y is located on the positive direction side of the third direction Z of the first electrode 110. As shown in FIG. A portion of the second organic layer 124A positioned between the partition walls 160A adjacent in the second direction Y and a portion of the second organic layer 124A positioned on the positive direction side of the partition wall 160A in the third direction Z are mutually fragmented.

Each of the first organic layer 122A and the second organic layer 124A includes, for example, a hole injection layer (HIL), a hole transport layer (HTL), a light emitting layer ( EML), an electron transport layer (ETL) and an electron injection layer (EIL). However, the layers included in each of the first organic layer 122A and the second organic layer 124A are not limited to this example.

As shown in FIG. 1, when viewed from the third direction Z, the conductive layer 130 overlaps regions of the insulating layer 150 where the plurality of first openings 152 and the plurality of second openings 154 are located. A portion of the conductive layer 130 located between the partition walls 160A adjacent to each other in the second direction Y serves as a second electrode 132A. The second electrode 132A functions as a cathode. In one example, second electrode 132A includes a metal or alloy. The metal or alloy is, for example, at least one metal selected from the group consisting of Al, Au, Ag, Pt, Mg, Sn, Zn and In, or an alloy of metals selected from this group. Similarly to the second electrode 132A shown in FIG. It is located on the positive direction side of the 3-direction Z. The second electrode 132A located on the positive side of the third direction Z of the first organic layer 122A and the portion of the conductive layer 130 located on the positive side of the third direction Z of the partition wall 160A are separated from each other. there is In addition, as shown in FIG. 5, the second electrode 132A overlapping the second organic layer 124A in the third direction Z between the partition walls 160A adjacent to each other in the second direction Y is located in the third direction Z of the second organic layer 124A. Located on the positive side. The second electrode 132A located on the positive side of the third direction Z of the second organic layer 124A and the portion of the conductive layer 130 located on the positive side of the third direction Z of the partition wall 160A are separated from each other. there is

As shown in FIGS. 5 and 6, the insulating layer 150 is positioned on the positive side of the third direction Z of the substrate 100 and the plurality of first electrodes 110 . The insulating layer 150 contains an organic material such as polyimide. Alternatively, the insulating layer 150 may contain an inorganic material such as silicon oxide.

The insulating layer 150 defines a plurality of first openings 152 and a plurality of second openings 154 .

As shown in FIGS. 1 to 4, the plurality of first openings 152 are arranged in a matrix when viewed from the third direction Z. As shown in FIGS. In the same manner as the light emitting section 140 shown in FIG. 5, portions of the first electrode 110, the first organic layer 122A, and the second electrode 132A that overlap the first openings 152 in the third direction Z constitute the light emitting section 140. ing. As shown in FIG. 5, portions of the first electrode 110, the second organic layer 124A, and the second electrode 132A that overlap with the first openings 152 in the third direction Z constitute the light emitting portion 140. As shown in FIG. In this manner, the insulating layer 150 defines the plurality of light emitting portions 140 by the plurality of first openings 152 . The light emitting device 10A is of bottom emission. Specifically, the light emitted from the light emitting unit 140 passes through the substrate 100 and is emitted toward the negative direction side of the third direction Z of the substrate 100 . The light emitting device 10A may be top emission. Further, the light emitting device 10A may emit light toward both the positive direction side and the negative direction side of the third direction Z. FIG.

1 to 4, the plurality of second openings 154 are positioned on the positive side of the first direction X with respect to the plurality of first openings 152 when viewed from the third direction Z. As shown in FIGS. Also, the plurality of second openings 154 are arranged substantially parallel to the second direction Y when viewed from the third direction Z. As shown in FIG. Similar to the second electrode 132A and the second conductive portion 204 shown in FIG. are electrically connected to each other through As shown in FIG. 6 , portions of the second electrode 132A and the second conductive portion 204 overlapping the second openings 154 in the third direction Z are electrically connected to each other through the second openings 154 .

The region where the plurality of second openings 154 are located in the insulating layer 150 may not be provided. In this case, the second electrode 132A and the first conductive portion 202 or the second conductive portion 204 are connected without passing through the second openings 154 at the portions where the plurality of second openings 154 are located in FIGS. They may be electrically connected to each other.

As shown in FIGS. 1 to 4, the plurality of partition walls 160A are arranged in the second direction Y. As shown in FIGS. As shown in FIGS. 5 and 6, each partition 160A is positioned on the positive side of the third direction Z of the insulating layer 150. As shown in FIGS. 160 A of partitions contain organic materials, such as a polyimide, an epoxy, an acryl. Alternatively, the partition 160A may contain an inorganic material such as silicon oxide.

Similar to the second conductive portion 204 shown in FIG. 6, the first conductive portion 202 is positioned on the positive side of the third direction Z of the substrate 100 . As shown in FIGS. 1 to 4, the plurality of first conductive portions 202 are arranged in the second direction Y at equal intervals when viewed from the third direction Z. As shown in FIGS. When viewed from the third direction Z, the plurality of first conductive portions 202 are positioned on the positive direction side of the first direction X with respect to the region where the plurality of light emitting portions 140 are arranged in a matrix. A portion of the first conductive portion 202 on the negative direction side of the first direction X overlaps the second opening 154 in the third direction Z when viewed from the third direction Z. As shown in FIG. When viewed from the third direction Z, the first conductive portion 202 extends in the negative direction of the second direction Y with respect to the positive direction of the first direction X from the portion of the first conductive portion 202 on the negative direction side of the first direction X. It extends obliquely towards the The layout of the plurality of first conductive parts 202 when viewed from the third direction Z is not limited to the example according to the first embodiment.

As shown in FIG. 6 , the second conductive portion 204 is positioned on the positive side of the third direction Z of the substrate 100 . As shown in FIGS. 1 to 4, the plurality of second conductive portions 204 are positioned on the negative side of the second direction Y with respect to the plurality of first conductive portions 202 when viewed from the third direction Z. . When viewed from the third direction Z, the plurality of second conductive portions 204 are arranged in the second direction Y at regular intervals. When viewed from the third direction Z, the plurality of second conductive portions 204 are positioned on the positive direction side of the first direction X with respect to the region where the plurality of light emitting portions 140 are arranged in a matrix. A portion of the second conductive portion 204 on the negative direction side of the first direction X overlaps with the second opening 154 in the third direction Z when viewed from the third direction Z. As shown in FIG. When viewed from the third direction Z, the second conductive portion 204 extends from the portion of the second conductive portion 204 on the negative side in the first direction X in the negative direction in the second direction Y with respect to the positive direction in the first direction X. It extends obliquely towards the The layout of the plurality of second conductive parts 204 when viewed from the third direction Z is not limited to the example according to the first embodiment.

The first conductive portion 202 and the second conductive portion 204 contain, for example, a material different from the material contained in the plurality of first electrodes 110 . For example, the first conductive portion 202 and the second conductive portion 204 contain a metal, specifically a relatively low-resistance metal such as Al, Ag, Cu, or Au. The first conductive portion 202 and the second conductive portion 204 may contain the same material as the material contained in the plurality of first electrodes 110 .

As shown in FIGS. 1 to 4, the area in which the plurality of light emitting units 140 are arranged in a matrix has a first display area 312A, a second display area 314A and a dummy display area 320A.

The first display area 312A is an area where light is emitted from the first organic layer 122A. Each of the plurality of light emitting units 140 arranged in a matrix in the first display region 312A is driven according to a passive matrix. Accordingly, the light emitting unit 140 of the first display area 312A emits light of the color emitted from the first organic layer 122A. In Embodiment 1, the plurality of second electrodes 132A positioned in the first display region 312A are electrically connected to the plurality of first conductive portions 202. As shown in FIG.

The second display area 314A is an area where light is emitted from the second organic layer 124A. As shown in FIGS. 1 to 4, the second display area 314A is positioned on the negative direction side of the second direction Y with respect to the first display area 312A when viewed from the third direction Z. As shown in FIGS. Each of the plurality of light emitting units 140 arranged in a matrix in the second display region 314A is driven according to a passive matrix. Accordingly, the light emitting portion 140 of the second display area 314A emits light of the color emitted from the second organic layer 124A. In Embodiment 1, the plurality of second electrodes 132A positioned in the second display region 314A are electrically connected to the plurality of second conductive portions 204. As shown in FIG.

The number of display regions included in the region where the plurality of light emitting units 140 are arranged in matrix is not limited to the example according to the first embodiment. For example, a region in which a plurality of light emitting units 140 are arranged in a matrix may have three or more display regions that emit lights of different colors.

The dummy display area 320A is an area in which the light emitting section 140 does not emit light. 1 to 4, the dummy display area 320A is located between the first display area 312A and the second display area 314A in the second direction Y when viewed from the third direction Z. As shown in FIGS. In addition, the portion of the first organic layer 122A on the positive side in the second direction Y is provided in the portion on the positive side in the second direction Y of the dummy display region 320A. A portion of the second organic layer 124A on the positive direction side in the second direction Y is provided in a portion on the negative direction side in the second direction Y of the dummy display region 320A.

The second electrode 132A located in the dummy display area 320A is not connected to any of the multiple first conductive parts 202 and the multiple second conductive parts 204 . Therefore, the light emitting section 140 located in the dummy display area 320A is electrically open. Accordingly, at least one light emitting unit 140 that is shifted in the negative direction of the second direction Y from the first display region 312A or shifted in the positive direction of the second direction Y from the second display region 314A is electrically is open to In the first embodiment, the dummy display area 320A includes two rows of light emitting units 140 arranged in the second direction Y. As shown in FIG. A partition wall 160A is provided between adjacent light emitting portions 140 in the dummy display area 320A. The layout of the light emitting units 140 positioned in the dummy display area 320A when viewed from the third direction Z is not limited to the example according to the first embodiment.

When the electrically open light-emitting portion 140 is provided in the dummy display region 320A, compared to the case in which only the substrate 100 is provided in the dummy display region 320A, the light-emitting device 10A does not emit light when the light-emitting device 10A does not emit light. When viewed from the three directions Z, the difference in structure of the dummy display area 320A with respect to the first display area 312A or the second display area 314A can be made difficult to see. Further, when the electrically open light emitting portion 140 is provided in the dummy display region 320A, the layout of the plurality of first openings 152 of the insulating layer 150 of the light emitting device 10A according to Embodiment 1 and the implementation described later are different. The layout of the plurality of first openings 152 of the insulating layer 150 of the light emitting device 10B according to the second embodiment can be shared. Therefore, a common photomask can be used for forming the insulating layer 150 of the light emitting device 10A according to the first embodiment and forming the insulating layer 150 of the light emitting device 10B according to the second embodiment.

When the dummy display area 320A is provided, the edge of the first display area 312A on the negative side in the second direction Y and the edge of the second display area 314A on the positive side in the second direction Y are aligned. Compared to the case where they are in contact with each other without the dummy display region 320A intervening, the second organic layer 124A is provided in the light emitting unit 140 on the negative direction side in the second direction Y in the first display region 312A, Defects of the light emitting unit 140 due to the provision of the first organic layer 122A in the light emitting unit 140 on the positive direction side in the second direction Y within the second display area 314A can be suppressed.

The dummy display area 320A may not be provided. In addition, the dummy display area 320A may be provided with only the substrate 100, for example, without the electrically open light-emitting section 140 being provided.

Next, with reference to FIGS. 1 to 4, details of electrical connection between the second electrode 132A and the first conductive portion 202 and details of electrical connection between the second electrode 132A and the second conductive portion 204 are shown. , will be explained.

A first virtual line L1A indicated by a dashed line in FIGS. 1 to 4 is a region where the second electrode 132A electrically connected to the first conductive portion 202 and the plurality of first electrodes 110 overlap in the third direction Z. is a virtual line passing through the center of in the first direction X. A second virtual line L2A indicated by a two-dot chain line in FIGS. A virtual line passing through the center of the overlapping region in the first direction X. FIG.

A first connection region 412A surrounded by a dotted line in FIGS. 1 to 4 is a portion of the second electrode 132A that constitutes the light emitting portion 140 on the first imaginary line L1A and a portion of the first conductive portion 202 that is connected to the first direction. A portion on the negative direction side of X and , indicate a region electrically connected to each other. 1 to 4, the second connection region 414A surrounded by the dotted line is the portion of the second electrode 132A that constitutes the light emitting portion 140 on the second imaginary line L2A, and the first connection region 414A of the second conductive portion 204. A portion on the negative direction side of the direction X is shown as an area electrically connected to.

As shown in FIG. 1, the portion of the second electrode 132A that constitutes the light emitting portion 140 on the first imaginary line L1A and the portion of the first conductive portion 202 on the negative direction side in the first direction X are: The first connection regions 412A are electrically connected to each other through the second openings 154 at positions shifted from the first imaginary line L1A in the negative direction of the second direction Y by a predetermined distance. The predetermined distance in the first embodiment is equal to the pitch in the second direction Y of the plurality of light emitting units 140 in the first display area 312A. The predetermined distance may be different from the pitch in the second direction Y of the plurality of light emitting units 140 in the first display area 312A. For example, the predetermined distance may be an integral multiple of the pitch in the second direction Y of the plurality of light emitting units 140 in the first display area 312A.

According to the first embodiment, the portion of the second electrode 132A that constitutes the light emitting portion 140 on the first imaginary line L1A and the portion of the first conductive portion 202 on the negative direction side in the first direction X are the first electrodes. Even if they are shifted in the two directions Y, the position where the second electrode 132A and the first conductive portion 202 are electrically connected to each other in the first connection region 412A is shifted in the negative direction in the second direction Y from the first virtual line L1A. By shifting in the direction, the second electrode 132A and the first conductive portion 202 can be electrically connected to each other. Therefore, without shifting the first conductive portion 202 in the positive direction of the second direction Y so that the portion of the first conductive portion 202 on the negative direction side of the first direction X is positioned on the first imaginary line L1A, The second electrode 132A and the first conductive part 202 can be electrically connected to each other. Therefore, a light emitting device having a display region different from the first display region 312A and the second display region 314A of the light emitting device 10A according to Embodiment 1, for example, a plurality of first conductive regions used in a light emitting device 10B according to Embodiment 2 described later. The layout of the portion 202 and the second conductive portion 204 when viewed from the third direction Z can also be applied to the light emitting device 10A according to the first embodiment. That is, regardless of the layout of the display area viewed from the third direction Z, the layout of the plurality of first conductive portions 202 and the plurality of second conductive portions 204 viewed from the third direction Z should be constant. can be done.

Further, as shown in FIG. 1, the second electrode 132A electrically connected to the first conductive portion 202 is positioned between the first display region 312A and the first connection region 412A in the positive direction of the first direction X. It extends obliquely in the negative direction of the second direction Y with respect to. Specifically, the partition 160A defining the shape of the second electrode 132A electrically connected to the first conductive portion 202 when viewed from the third direction Z is the first display area 312A and the first connection area 412A. and extends obliquely toward the negative direction of the second direction Y with respect to the positive direction of the first direction X.

In the first embodiment, the portion of the second electrode 132A that constitutes the light emitting portion 140 on the first imaginary line L1A and the portion of the first conductive portion 202 on the negative direction side in the first direction X are arranged in the The manufacturing cost of the light-emitting device 10A is reduced compared to the case where the first display region 312A and the first connection region 412A are electrically connected to each other through another conductive layer provided separately from the conductive layer 130. be able to. A portion of the second electrode 132A forming the light-emitting portion 140 on the first virtual line L1A and a portion of the first conductive portion 202 on the negative direction side of the first direction X are the first display region 312A. and the first connection region 412A may be electrically connected to each other via another conductive layer provided separately from the conductive layer 130 .

The electrical connection between the second electrode 132A and the first conductive portion 202 is not limited to the example according to the first embodiment. For example, only one of the plurality of second electrodes 132A electrically connected to the plurality of first conductive portions 202 is connected to the first conductive portion 202 at a position shifted in the second direction Y from the first virtual line L1A. may be electrically connected to Further, the position at which the first virtual line L1A, the second electrode 132A and the first conductive portion 202 are electrically connected to each other, and the magnitude and direction of the deviation in the second direction Y are electrically connected to each other. It may be different depending on the second electrode 132A and the first conductive part 202 that are connected.

As shown in FIG. 1, the portion of the second electrode 132A that constitutes the light-emitting portion 140 on the second virtual line L2A and the portion of the second conductive portion 204 on the negative direction side in the first direction X are: They are electrically connected to each other through the second opening 154 on the second virtual line L2A in the second connection region 414A. Specifically, the second electrode 132A electrically connected to the second conductive portion 204 is substantially positioned between the second display region 314A and the second connection region 414A with respect to the positive direction of the first direction X. stretched parallel to each other. A partition wall 160A that defines the shape of the second electrode 132A electrically connected to the second conductive portion 204 when viewed from the third direction Z is located between the first display region 312A and the second connection region 414A. , and extends substantially parallel to the first direction X.

In the first embodiment, the portion of the second electrode 132A that constitutes the light emitting portion 140 on the second virtual line L2A and the portion of the second conductive portion 204 that is on the negative direction side in the first direction X are the second electrodes. aligned in the Y direction. In this case, the second electrode 132A electrically connected to the second conductive portion 204 needs to extend diagonally with respect to the first direction X between the second display region 314A and the second connection region 414A. do not have. When the second electrode 132A electrically connected to the second conductive portion 204 extends parallel to the first direction X between the second display region 314A and the second connection region 414A, the second conductive portion Compared to the case where the second electrode 132A electrically connected to the portion 204 extends diagonally with respect to the first direction X between the second display region 314A and the second connection region 414A, the second The wiring resistance of the electrode 132A can be reduced, and the influence on the outer shape of the light emitting device 10A can be reduced.

In the same manner as the second electrode 132A and the first conductive portion 202 electrically connected to each other, the portion of the second electrode 132A that constitutes the light emitting portion 140 and the second conductive portion 204 on the second imaginary line L2A. The portion on the negative direction side of the first direction X is a portion of the second connection region 414A that is located at a position shifted by a predetermined distance in the positive or negative direction of the second direction Y from the second imaginary line L2A. may be electrically connected to each other via

Next, an example of a method for manufacturing the light emitting device 10A will be described.

First, a plurality of first conductive portions 202 and a plurality of second conductive portions 204 are formed on the positive direction side of the third direction Z of the substrate 100 .

Next, a plurality of first electrodes 110 are formed on the positive direction side of the substrate 100 in the third direction Z. As shown in FIG.

Next, the insulating layer 150 is formed on the positive side of the third direction Z of the substrate 100 . The insulating layer 150 is formed such that a plurality of first openings 152 and a plurality of second openings 154 are provided.

Next, a plurality of partition walls 160A are formed on the positive direction side of the substrate 100 in the third direction Z. As shown in FIG. As shown in FIGS. 1 to 4, the partition 160A extending from the first display region 312A to the first connection region 412A extends in the positive direction of the first direction X between the first display region 312A and the first connection region 412A. is stretched obliquely in the negative direction of the second direction Y. A partition 160A extending from the second display area 314A to the second connection area 414A extends substantially parallel to the first direction X between the second display area 314A and the second connection area 414A. The barrier ribs 160A located in the dummy display area 320A extend substantially parallel to the first direction X. As shown in FIG.

Next, the first organic layer 122A and the second organic layer 124A are formed on the positive direction side of the third direction Z of the substrate 100 . The first organic layer 122A and the second organic layer 124A are formed by vapor deposition, for example. In this case, the first organic layer 122A is divided into the first organic layer 122A positioned between the partition walls 160A adjacent to each other in the second direction Y, and the first organic layer 122A positioned on the positive direction side of the partition wall 160A in the third direction Z. and divided into In addition, the second organic layer 124A includes the second organic layer 124A positioned between the partition walls 160A adjacent to each other in the second direction Y, and the second organic layer 124A positioned on the positive direction side of the partition wall 160A in the third direction Z. , is divided into

Next, the conductive layer 130 is formed on the positive direction side of the third direction Z of the substrate 100 . The conductive layer 130 is formed by vapor deposition, for example. In this case, the conductive layer 130 is divided into a second electrode 132A positioned between the partition walls 160A adjacent to each other in the second direction Y, and a conductive layer 130 positioned on the positive side of the partition wall 160A in the third direction Z. be. The second electrode 132A extending from the first display region 312A to the first connection region 412A is separated from the first display region 312A and the first connection region 412A by the partition wall 160A extending from the first display region 312A to the first connection region 412A. It extends obliquely toward the negative direction of the second direction Y with respect to the positive direction of the first direction X between. Further, the second electrode 132A extending from the second display region 314A to the second connection region 414A is separated from the second display region 314A by the partition wall 160A extending from the second display region 314A to the second connection region 414A. 414A and substantially parallel to the first direction X.

Thus, the light emitting device 10A is manufactured.

FIG. 7 is a plan view of a light emitting device 10B according to Embodiment 2. FIG. FIG. 8 is a view of FIG. 7 with the conductive layer 130 removed. FIG. 9 is a diagram of FIG. 8 with the organic layer 120B removed. FIG. 10 is a diagram of FIG. 9 with the insulating layer 150 and the plurality of partition walls 160B removed. The light emitting device 10B according to Embodiment 2 is the same as the light emitting device 10A according to Embodiment 1 except for the following points.

The light emitting device 10B includes an organic layer 120B. The organic layer 120B emits a predetermined color, for example, white light by organic EL. As shown in FIG. 8, when viewed from the third direction Z, the organic layer 120B overlaps the entire region of the insulating layer 150 where the plurality of first openings 152 are located. In addition, when viewed from the third direction Z, the organic layer 120B does not overlap the regions of the insulating layer 150 where the plurality of second openings 154 are located. Similar to the second organic layer 124A shown in FIG. 5, the organic layer 120B is located on the positive side of the third direction Z of the substrate 100. As shown in FIG. A portion of the organic layer 120B located between the partition walls 160B adjacent to each other in the second direction Y is located on the positive side of the third direction Z of the first electrode 110 . A portion of the organic layer 120B located between the partition walls 160B adjacent to each other in the second direction Y and a portion of the organic layer 120B located on the positive side of the partition wall 160B in the third direction Z are separated from each other. .

The layout of the plurality of first conductive portions 202 and the plurality of second conductive portions 204 of the light emitting device 10B according to Embodiment 2 when viewed from the third direction Z is similar to that of the plurality of first conductive portions 202 of the light emitting device 10A according to Embodiment 1. The layout of the conductive portion 202 and the plurality of second conductive portions 204 when viewed from the third direction Z is common.

As shown in FIGS. 7 to 10, the area where the plurality of light emitting units 140 are arranged in a matrix has a display area 310B and a dummy display area 320B.

The display area 310B is an area where light is emitted from the organic layer 120B. Each of the plurality of light emitting units 140 arranged in a matrix in the display area 310B is driven according to a passive matrix. Accordingly, the light emitting section 140 in the display area 310B emits light of the color emitted from the organic layer 120B. In addition, in the second embodiment, the plurality of second electrodes 132A positioned in the positive direction side in the second direction Y of the display area 310B are electrically connected to the plurality of first conductive portions 202 . A plurality of second electrodes 132</b>A located in a portion of the display region 310</b>B on the negative direction side in the second direction Y are electrically connected to a plurality of second conductive portions 204 .

The dummy display area 320B is an area where no light is emitted from the organic layer 120B. As shown in FIGS. 7 to 10, the dummy display area 320B is positioned on the positive side in the second direction Y with respect to the display area 310B when viewed from the third direction Z. As shown in FIGS. A portion of the organic layer 120B on the positive direction side in the second direction Y is provided in the dummy display region 320A.

The second electrode 132B positioned in the dummy display area 320B is not connected to any of the multiple first conductive parts 202 and the multiple second conductive parts 204 . Therefore, the light emitting section 140 located in the dummy display area 320B is electrically open. Accordingly, at least one light emitting unit 140 that is shifted in the positive direction of the second direction Y from the display area 310B is electrically open. In the second embodiment, the dummy display area 320B includes two rows of light emitting units 140 arranged in the second direction Y. As shown in FIG. A partition wall 160B is provided between the adjacent light emitting units 140 in the dummy display area 320B. The layout of the light emitting units 140 located in the dummy display area 320B is not limited to the example according to the second embodiment.

When the electrically open light-emitting portion 140 is provided in the dummy display region 320B, compared to the case where, for example, only the substrate 100 is provided in the dummy display region 320B, when the light-emitting device 10B does not emit light, the second When viewed from the three directions Z, it is possible to make it difficult to visually recognize the difference in the structure of the dummy display area 320B with respect to the display area 310B. Further, when the electrically open light emitting unit 140 is provided in the dummy display region 320B, the layout of the plurality of first openings 152 of the insulating layer 150 of the light emitting device 10A according to the first embodiment and the second embodiment are different. The layout of the plurality of first openings 152 of the insulating layer 150 of the light emitting device 10B can be shared. Therefore, a common photomask can be used for forming the insulating layer 150 of the light emitting device 10A according to the first embodiment and forming the insulating layer 150 of the light emitting device 10B according to the second embodiment.

The first and second embodiments differ in the area functioning as the display area. Specifically, in the first embodiment, the region in which the plurality of light emitting units 140 are arranged in a matrix has a plurality of display regions that emit lights of different colors. On the other hand, in the second embodiment, the area in which the plurality of light emitting units 140 are arranged in a matrix has a single display area that emits light of a single color. Further, in the light-emitting device 10A according to Embodiment 1, the region serving as the dummy display region 320B in the light-emitting device 10B according to Embodiment 2 becomes a part of the first display region 312A on the positive direction side in the second direction Y. there is In contrast, in the light-emitting device 10B according to Embodiment 2, the dummy display region 320A in the light-emitting device 10A according to Embodiment 1 becomes a part of the display region 310B near the center in the second direction Y. there is

As shown in FIG. 7, the portion of the second electrode 132B that constitutes the light-emitting portion 140 on the first virtual line L1B and the portion of the first conductive portion 202 on the negative direction side in the first direction X are: The first connection regions 412B are electrically connected to each other through the second openings 154 at positions shifted in the positive direction of the second direction Y from the first imaginary line L1B by a predetermined distance. The predetermined distance in the second embodiment is equal to the pitch in the second direction Y of the plurality of light emitting units 140 in the display area 310B. The predetermined distance may be different from the pitch in the second direction Y of the plurality of light emitting units 140 in the display area 310B. For example, the predetermined distance may be an integral multiple of the pitch in the second direction Y of the plurality of light emitting units 140 in the display area 310B.

According to the second embodiment, the portion of the second electrode 132B that constitutes the light-emitting portion 140 on the first virtual line L1B and the portion of the first conductive portion 202 on the negative direction side in the first direction X are the first electrodes. Even if they are shifted in the two directions Y, the position where the second electrode 132B and the first conductive portion 202 are electrically connected to each other in the first connection region 412B is positive in the second direction Y from the first virtual line L1B. By shifting in the direction, the second electrode 132B and the first conductive portion 202 can be electrically connected to each other. Therefore, without shifting the first conductive portion 202 in the positive direction in the second direction Y so that the portion of the first conductive portion 202 on the negative direction side in the first direction X is positioned on the first imaginary line L1B, The second electrode 132B and the first conductive part 202 can be electrically connected to each other. Therefore, the light emitting device having a display region different from the display region 310B of the light emitting device 10B according to the second embodiment, for example, the plurality of first conductive portions 202 and the second conductive portions 204 used in the light emitting device 10A according to the first embodiment. The layout when viewed from the three directions Z can also be applied to the light emitting device 10B according to the second embodiment. That is, regardless of the layout of the display area viewed from the third direction Z, the layout of the plurality of first conductive portions 202 and the plurality of second conductive portions 204 viewed from the third direction Z should be constant. can be done.

In addition, as shown in FIG. 7, the second electrode 132B electrically connected to the first conductive portion 202 is arranged between the display region 310B and the first connection region 412B with respect to the positive direction of the first direction X. It extends obliquely toward the positive direction of the second direction Y. Specifically, the partition 160B defining the shape of the second electrode 132B electrically connected to the first conductive portion 202 when viewed from the third direction Z is the partition between the display region 310B and the first connection region 412B. In between, it extends obliquely toward the positive direction of the second direction Y with respect to the positive direction of the first direction X. In the second embodiment, similarly to the first embodiment, the portion of the second electrode 132B that constitutes the light emitting portion 140 on the first imaginary line L1B and the negative direction of the first direction X of the first conductive portion 202 , are electrically connected to each other via another conductive layer provided separately from the conductive layer 130 between the display region 310B and the first connection region 412B. manufacturing costs can be reduced.

As shown in FIG. 7, the portion of the second electrode 132B that constitutes the light-emitting portion 140 on the second virtual line L2B and the portion of the second conductive portion 204 on the negative direction side in the first direction X are: They are electrically connected to each other through the second opening 154 on the second virtual line L2B in the second connection region 414B. Specifically, the second electrode 132B electrically connected to the second conductive portion 204 is substantially in the positive direction of the first direction X between the display region 310B and the second connection region 414B. stretched in parallel. In addition, the partition 160B defining the shape of the second electrode 132B electrically connected to the second conductive portion 204 when viewed from the third direction Z is located between the display region 310B and the second connection region 414B. It extends substantially parallel to the first direction X.

Although the embodiments have been described above with reference to the drawings, these are examples of the present invention, and various configurations other than those described above can be employed.

10A Light emitting device 10B Light emitting device 100 Substrate 110 First electrode 120B Organic layer 122A First organic layer 124A Second organic layer 130 Conductive layer 132A Second electrode 132B Second electrode 140 Light emitting section 150 Insulating layer 152 First opening 154 Second opening 160A Partition 160B Partition 202 First conductive portion 204 Second conductive portion 310B Display area 312A First display area 314A Second display area 320A Dummy display area 320B Dummy display area 412A First connection area 412B First connection area 414A Second connection area 414B Second connection area L1A First virtual line L1B First virtual line L2A Second virtual line L2B Second virtual line X First direction Y Second direction Z Third direction

Claims (6)

a plurality of first electrodes arranged in a first direction;
a plurality of second electrodes arranged in a second direction orthogonal to the first direction;
a plurality of conductive portions electrically connected to the plurality of second electrodes;
with
At least one of the plurality of second electrodes and at least one of the plurality of conductive portions define a region where the at least one of the plurality of second electrodes and the plurality of first electrodes overlap. The light-emitting devices are electrically connected to each other at positions shifted in the second direction from a first imaginary line passing in the first direction. The light emitting device according to claim 1,
At least one other of the plurality of second electrodes and at least one other of the plurality of conductive portions are defined by at least one of the plurality of second electrodes and the plurality of first electrodes. are electrically connected to each other on a second imaginary line passing through the overlapping region in the first direction. The light emitting device according to claim 1 or 2,
A light-emitting device, wherein at least one light-emitting portion positioned displaced in the second direction from a display region formed by the plurality of first electrodes and the plurality of second electrodes is electrically open. In the light emitting device according to any one of claims 1 to 3,
A light-emitting device according to claim 1, wherein a region in which a plurality of light-emitting portions composed of the plurality of first electrodes and the plurality of second electrodes are arranged has a plurality of display regions emitting light of different colors. In the light emitting device according to any one of claims 1 to 3,
A light-emitting device according to claim 1, wherein a region in which a plurality of light-emitting portions composed of the plurality of first electrodes and the plurality of second electrodes are arranged has a single display region that emits light of a single color. In the light emitting device according to any one of claims 1 to 5,
The at least one of the plurality of second electrodes includes a region where the at least one of the plurality of second electrodes and the plurality of first electrodes overlap, and and a region in which the at least one of the at least one of the plurality of conductive portions is electrically connected to each other.

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