JP2011034849A - Organic el device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic EL device having an excellent display quality. <P>SOLUTION: The organic EL device includes: an insulating substrate; a pixel electrode arranged above the insulating substrate; a barrier rib arranged around the pixel electrode; a dividing layer arranged above the pixel electrode and dividing the pixel electrode exposed from the barrier rib into a plurality of regions; an organic layer arranged above the pixel electrode and the dividing layer; and a counter electrode arranged above the organic layer. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an organic electroluminescence (EL) device.

  In recent years, active development of display devices using organic electroluminescence (EL) elements that are self-luminous, have high-speed response, wide viewing angle, high contrast, and can be made thinner and lighter. It has been broken.

  For example, according to Patent Document 1, when a light emission failure occurs due to a short circuit between electrodes due to the presence of foreign matter, the foreign matter in the organic light emitting element in which the light emission failure has occurred is detected, and the region surrounding the foreign matter is detected. A technique relating to a repair method and a manufacturing method of an organic light emitting device in which at least one electrode is removed by laser irradiation is disclosed.

JP 2009-16195 A

  An object of the present invention is to provide an organic EL device with good display quality.

According to one aspect of the invention,
An insulating substrate;
A pixel electrode disposed above the insulating substrate;
Barrier ribs arranged around the pixel electrode;
A dividing layer disposed on the pixel electrode and dividing the pixel electrode exposed from the partition wall into a plurality of regions;
An organic layer disposed on the pixel electrode and the divided layer;
A counter electrode disposed on the organic layer;
An organic EL device characterized by comprising:

According to one embodiment of the present invention,
An insulating substrate;
A pixel electrode disposed above the insulating substrate;
Barrier ribs arranged around the pixel electrode;
A dividing layer connected to the partition wall and disposed on the pixel electrode and dividing the pixel electrode exposed from the partition wall into a plurality of regions with the partition wall;
An organic layer disposed on the pixel electrode and the divided layer;
A counter electrode covering the organic layer and the partition;
The organic layer and the counter electrode are missing in a loop shape, a groove exposing a part of the divided layer,
An organic EL device characterized by comprising:

  According to the present invention, an organic EL device with good display quality can be provided.

FIG. 1 is a plan view schematically showing a configuration of an organic EL device according to one embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of an array substrate including an organic EL element of the organic EL display device according to this embodiment. FIG. 3 is a plan view schematically showing a layout example of the divided layers shown in FIG. FIG. 4 is a plan view schematically showing another layout example of the divided layers shown in FIG. FIG. 5 is a plan view schematically showing another layout example of the divided layers shown in FIG. FIG. 6 is a plan view schematically showing another layout example of the divided layers shown in FIG. FIG. 7 is a plan view schematically showing another layout example of the divided layers shown in FIG. FIG. 8 is a plan view for explaining the repair of the short-circuit between the pixel electrode and the counter electrode due to the contamination with foreign matter. FIG. 9 is a cross-sectional view schematically showing a structure when the organic EL element shown in FIG. 8 is cut along line AA. FIG. 10 is a plan view for explaining the repair of the color mixing failure. FIG. 11 is a cross-sectional view schematically showing a structure when the first organic EL element and the second organic EL element shown in FIG. 10 are cut along a BB line.

  Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. In each figure, the same reference numerals are given to components that exhibit the same or similar functions, and duplicate descriptions are omitted.

  FIG. 1 is a plan view schematically showing a configuration of an organic EL display device adopting an active matrix driving method as an example of an organic EL device.

  That is, the organic EL device includes the display panel 1. The display panel 1 includes an array substrate 100 and a sealing substrate 200. The array substrate 100 includes a plurality of organic EL elements OLED arranged in a matrix in an approximately rectangular active area 102 for displaying an image. The sealing substrate 200 faces the organic EL element OLED of the array substrate 100 in the active area 102. The sealing substrate 200 is an insulating substrate having optical transparency such as glass or plastic.

  The array substrate 100 and the sealing substrate 200 are bonded together by a seal member 300 formed in a frame shape surrounding the active area 102. The seal member 300 is made of, for example, an organic material such as an ultraviolet curable resin or frit glass. When the seal member 300 is formed of an organic material, the resin layer may be filled inside the array member 100 and the sealing substrate 200 surrounded by the seal member 300. In this case, the resin layer to be filled can be formed of, for example, an organic material having optical transparency such as an ultraviolet curable resin.

  In addition, the array substrate 100 includes an extending portion 110 that extends outward from the end portion 200E of the sealing substrate 200 in the peripheral area 104 outside the active area 102. The extending part 110 is provided with a driving part 130. The driving unit 130 includes a driving IC chip and a flexible printed circuit (hereinafter referred to as FPC) that supply signals necessary for driving the organic EL element OLED such as a power source and various control signals to the organic EL element OLED. A signal supply source such as) can be connected.

  FIG. 2 is a cross-sectional view of the array substrate 100 including the organic EL element OLED of the organic EL device.

  The array substrate 100 includes an insulating substrate 101 such as glass, a switching element SW formed above the insulating substrate 101, an organic EL element OLED, and the like. An undercoat layer 111 is disposed on the insulating substrate 101. The undercoat layer 111 is made of an inorganic material such as silicon oxide or silicon nitride, for example. Such an undercoat layer 111 extends over substantially the entire active area 102.

  On the undercoat layer 111, the semiconductor layer SC of the switching element SW is disposed. The semiconductor layer SC is made of, for example, polysilicon. In the semiconductor layer SC, a source region SCS and a drain region SCD are formed with a channel region SCC interposed therebetween.

  The semiconductor layer SC is covered with a gate insulating film 112. The gate insulating film 112 is also disposed on the undercoat layer 111. The gate insulating film 112 is formed of an inorganic material such as silicon oxide or silicon nitride, for example. Such a gate insulating film 112 extends over substantially the entire active area 102.

  On the gate insulating film 112, the gate electrode G of the switching element SW is disposed immediately above the channel region SCC. In this example, the switching element SW is a top gate type p-channel thin film transistor. The gate electrode G is covered with a passivation film 113. The passivation film 113 is also disposed on the gate insulating film 112. The passivation film 113 is made of, for example, an inorganic material such as silicon oxide or silicon nitride. Such a passivation film 113 extends over substantially the entire active area 102.

  On the passivation film 113, the source electrode S and the drain electrode D of the switching element SW are disposed. The source electrode S is in contact with the source region SCS of the semiconductor layer SC. The drain electrode D is in contact with the drain region SCD of the semiconductor layer SC. The gate electrode G, the source electrode S, and the drain electrode D of the switching element SW are formed using a conductive material such as molybdenum (Mo), tungsten (W), aluminum (Al), or titanium (Ti).

  The source electrode S and the drain electrode D are covered with an insulating film 114. The insulating film 114 is also disposed on the passivation film 113. Such an insulating film 114 is formed of, for example, an organic material such as an ultraviolet curable resin or a thermosetting resin, or various inorganic materials. Further, such an insulating film 114 extends over the entire active area 102.

  The pixel electrode PE constituting the organic EL element OLED is disposed on the insulating film 114. The pixel electrode PE is connected to the drain electrode D of the switching element SW. The pixel electrode PE corresponds to an anode in this example.

  The pixel electrode PE has a two-layer structure in which a reflective electrode PER and a transmissive electrode PET are stacked. That is, the reflective electrode PER is disposed on the insulating film 114. The transmissive electrode PET is disposed on the reflective electrode PER. The reflective electrode PER is formed of a conductive material having light reflectivity such as silver (Ag) or aluminum (Al). The transmissive electrode PET is formed of a conductive material having optical transparency such as indium tin oxide (ITO) and indium zinc oxide (IZO). Note that the pixel electrode PE is not limited to the above-described two-layer structure, and may be a laminated structure of three or more layers, a reflective electrode PER single layer, or a transmissive electrode PET single layer. good. When the microcavity structure is employed, the pixel electrode PE includes a reflective electrode PER.

  A partition wall PI is disposed on the insulating film 114. The partition wall PI is disposed around the pixel electrode PE. Further, the partition wall PI overlaps with a part of the pixel electrode PE. Such a partition wall PI is formed of, for example, an organic material such as an ultraviolet curable resin or a thermosetting resin, or various inorganic materials. The partition wall PI has a side surface PIS and an upper surface PIT.

  The division layer 120 is disposed on the pixel electrode PE exposed from the partition wall PI. The dividing layer 120 divides the pixel electrode PE into a plurality of regions. In the example shown in FIG. 2, two regions A1 and A2 are formed between the dividing layer 120 and the partition wall PI. In these regions A1 and A2, the pixel electrode PE is exposed from the partition wall PI and the dividing layer 120.

  Such a dividing layer 120 can be formed of the same material as the partition wall PI, and is formed of, for example, an organic material such as an ultraviolet curable resin or a thermosetting resin, or an insulating material such as various inorganic materials. . In particular, when an organic material is used, the partition walls PI and the divided layers 120 can be formed at a time by a photolithography process using a halftone mask. For this reason, the separate process for forming the division | segmentation layer 120 is unnecessary. The structure of the divided layer 120 will be described in detail later.

  The organic layer ORG constituting the organic EL element OLED is arranged on the pixel electrode PE. The organic layer ORG is also disposed on the dividing layer 120. That is, the organic layer ORG covers the pixel electrode PE and the division layer 120. In other words, the division layer 120 is disposed between the pixel electrode PE and the organic layer ORG. Further, the organic layer ORG is disposed on the partition wall PI, particularly so as to cover the side surface PIS of the partition wall PI, but at least a part of the upper surface PIT of the partition wall PI is exposed.

  Such an organic layer ORG includes at least a light emitting layer, and may further include a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, and the like. The material of the organic layer ORG may include a fluorescent material or a phosphorescent material.

  The counter electrode CE constituting the organic EL element OLED is arranged on the organic layer ORG. The counter electrode CE is also disposed on the partition wall PI. That is, the counter electrode CE covers the organic layer ORG and the partition wall PI. In this example, the counter electrode CE corresponds to a cathode.

  Such a counter electrode CE is composed of, for example, a transmissive layer formed of a conductive material such as ITO or IZO, or a semi-transmissive layer formed of magnesium / silver or the like. When the microcavity structure is employed, the counter electrode CE includes a semi-transmissive layer. Such a counter electrode CE extends over the entire active area 102.

  The inner area surrounded by the partition wall PI substantially corresponds to the light emitting area EA. That is, in the light emitting area EA, the pixel electrode PE is exposed from the partition wall PI, the organic layer ORG is stacked on the pixel electrode PE, and the counter electrode CE is stacked on the organic layer ORG. For this reason, a current flows between the pixel electrode PE and the counter electrode CE, and light emission is possible in the organic layer ORG.

  In the region where the dividing layer 120 is disposed, since the dividing layer 120 made of an insulating material is interposed between the pixel electrode PE and the organic layer ORG, there is no current path and no light is emitted from the organic layer ORG.

  FIG. 3 is a plan view schematically showing a layout example of the division layer 120. In FIG. 3, only the main parts necessary for explanation are shown.

  The light emitting area EA has a substantially rectangular shape, a pair of long sides L1 and L2 parallel to the first direction X, a pair of short sides S1 and S2 parallel to the second direction Y orthogonal to the first direction X, have. The long sides L1 and L2 and the short sides S1 and S2 correspond to the boundary between the partition wall PI and the pixel electrode PE.

  The dividing layer 120 is formed in a cross shape, and is connected to the partition wall PI at each side L1 and L2 and S1 and S2 of the light emitting area EA. That is, the dividing layer 120 includes a first dividing unit 121 parallel to the first direction X, and a second dividing unit 122 that is parallel to the second direction Y and intersects the first dividing unit 121 at the approximate center of the light emitting area EA. have. Both of these first division part 121 and second division part 122 are linearly formed.

  Both ends of the first division unit 121 are connected to the short sides S1 and S2, respectively. Both ends of the second division unit 122 are connected to the long sides L1 and L2, respectively. Thereby, the pixel electrode PE is divided into four regions A1 to A4. The first divided portion 121 and the second divided portion 122 are preferably formed so that the areas A1 to A4 have substantially the same area.

  The dividing layer 120 may have a plurality of dividing portions parallel to the first direction X, and may have a plurality of dividing portions parallel to the second direction Y. Thereby, the pixel electrode PE can be divided into more regions.

  4 to 7 are plan views schematically showing other layout examples of the dividing layer 120. FIG. The same components as those in the layout example shown in FIG. 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the example shown in FIG. 4, the divided layer 120 includes a first divided portion 121 parallel to the second direction Y, and a second separated from the first divided portion 121 and parallel to the first divided portion 121. A division unit 122 is included. Both of these first division part 121 and second division part 122 are linearly formed.

  Both ends of the first dividing unit 121 and the second dividing unit 122 are connected to the long sides L1 and L2, respectively. Thereby, the pixel electrode PE is divided into three regions A1 to A3. The first divided portion 121 and the second divided portion 122 are preferably formed so that the areas A1 to A3 have substantially the same area.

  The dividing layer 120 may have only one dividing portion parallel to the second direction Y, or may have three or more. As the number of divided portions increases, the pixel electrode PE can be divided into more regions.

  In the example illustrated in FIG. 5, the divided layer 120 includes a first divided portion 121 parallel to the first direction X, and a second separated from the first divided portion 121 and parallel to the first divided portion 121. A division unit 122 is included. Both of these first division part 121 and second division part 122 are linearly formed.

  Both ends of the first dividing unit 121 and the second dividing unit 122 are connected to the short sides S1 and S2, respectively. Thereby, the pixel electrode PE is divided into three regions A1 to A3. The first divided portion 121 and the second divided portion 122 are preferably formed so that the areas A1 to A3 have substantially the same area.

  The dividing layer 120 may have only one dividing portion parallel to the first direction X, or may have three or more.

  In the example illustrated in FIG. 6, the divided layer 120 includes a linear first divided portion 121 that connects a corner portion C1 where the short side S1 and the long side L1 intersect with a substantially middle point LM of the long side L2, and a short side. A straight second divided portion 122 that connects a corner portion C2 where S2 and the long side L1 intersect with a substantially middle point LM of the long side L2 is provided. Thereby, the pixel electrode PE is divided into three regions A1 to A3. The area of the area A2 is larger than the areas of the other areas A1 and A3, and here is equivalent to the sum of the area of the area A1 and the area of the area A3.

  In the example illustrated in FIG. 7, the divided layer 120 includes a linear first divided portion 121 that connects a corner portion C1 where the short side S1 and the long side L1 intersect with a substantially middle point SM of the short side S2, and a short side. A straight second divided portion 122 is provided that connects a corner portion C2 where S1 and the long side L2 intersect to a substantially midpoint SM of the short side S2. Thereby, the pixel electrode PE is divided into three regions A1 to A3. The area of the area A2 is larger than the areas of the other areas A1 and A3, and here is equivalent to the sum of the area of the area A1 and the area of the area A3.

  Each of the layout examples of the divided layer 120 shown in FIGS. 3 to 7 may be combined with two or more.

  Next, repair of the organic EL element OLED in which a foreign substance is mixed in the organic layer ORG and a short circuit occurs between the pixel electrode PE and the counter electrode CE will be described.

  FIG. 8 is a plan view of an organic EL element OLED to which the layout example shown in FIG. In the example shown in FIG. 8, foreign matter is mixed in the area A2 in the light emitting area EA. In such a state, the entire light emitting area EA in the organic EL element OLED cannot emit light.

  Therefore, a laser is irradiated toward the divided layer 120 and the partition wall PI, and the organic layer and the counter electrode stacked on the divided layer 120 and the partition wall PI are removed in a loop shape so as to surround the region A2 in which foreign matter is mixed. . Here, the region A2 includes the partition wall PI, the first divided portion 121 from the connection point of the short side S2 to the intersection with the second divided portion 122, and the first divided portion 121 from the connection point of the long side L1. And the second divided portion 122 up to the intersection of the two. The laser scans in a loop shape passing over the partition walls PI, the first division unit 121, and the second division unit 122 surrounding the region A2, and the repair process is performed. Thereby, a loop-shaped groove GV in which the organic layer and the counter electrode are missing is formed. From the groove GV, the partition wall PI, the first divided portion 121, and the second divided portion 122 are exposed.

  FIG. 9 is a cross-sectional view schematically showing the organic EL element OLED after repair. In FIG. 9, only the main parts necessary for the explanation are shown.

  The pixel electrode PE disposed on the insulating film 114 is divided into regions A2 and A4 by the partition wall PI and the first division unit 121. Foreign matter is mixed in the region A2, and the pixel electrode PE and the counter electrode CE are short-circuited. After the repair, the counter electrode CE on the partition wall PI, the organic layer ORG and the counter electrode CE on the first division part 121 are missing, and the groove GV is formed. That is, a part of the first division part 121 and a part of the partition wall PI are exposed from the groove GV.

  The inner organic layer ORG and the counter electrode CE surrounded by the groove GV remain. However, the counter electrode inside the groove GV (that is, the counter electrode corresponding to the region A2) CE is separated from the counter electrode outside the groove GV (that is, the counter electrode corresponding to the region A4 and the counter electrode on the partition wall PI). ing.

  Due to the formation of the groove GV, the potential is not supplied to the counter electrode CE surrounded by the groove GV. On the other hand, the counter electrode CE outside the groove GV is continuous and can be supplied with a potential. That is, the region A2 is electrically separated from the other regions A1, A3, and A4. Therefore, while the area A2 is darkened, in the other areas A1, A3, and A4, a current normally flows between the pixel electrode PE and the counter electrode CE, and the organic layer ORG can emit light. . That is, the regions A1, A3, and A4 are regions that substantially contribute to light emission.

  As described above, by arranging the dividing layer 120 that divides the pixel electrode PE into a plurality of regions, even if a short circuit occurs between the pixel electrode PE and the counter electrode CE due to the mixing of foreign matter, the foreign matter By electrically disconnecting only the region where is mixed into dark spots, the other regions can emit light normally, and repair is possible. Therefore, it is possible to realize a better display quality than before the repair.

  In particular, a laser used for repair is scanned along the dividing layer 120 and the partition wall PI. At this time, the dividing layer 120 (or the undulation in the light emitting area EA formed by disposing the dividing layer 120 or the difference in transmittance or reflectance) is used as a target for laser irradiation. This makes it possible to improve the accuracy of laser irradiation.

  In repairing, since the laser is irradiated from above the dividing layer 120, the dividing layer 120 functions as a protective film for the pixel electrode PE, various wirings, and various circuits arranged below the dividing layer 120. . For this reason, it becomes possible to reduce the downward damage of the division | segmentation layer 120. FIG. Specifically, even if the counter electrode CE on the divided layer 120 is irradiated with a laser, the laser is blocked by the divided layer 120, so that the pixel electrode PE below the divided layer 120 is not cut. Therefore, for example, when the drain electrode of the switching element is connected to the pixel electrode PE in the A1 region in FIGS. 4 to 7, even if the counter electrode CE in the A2 region is electrically separated from other regions by laser irradiation. Since the pixel electrode PE is not electrically separated, a potential can be supplied to the A3 region.

  Next, repair when color mixing failure occurs between two adjacent organic EL elements will be described.

  FIG. 10 is a plan view of the first organic EL element OLED1 and the second organic EL element OLED2 to which the layout example shown in FIG. The first organic EL element OLED1 and the second organic EL element OLED2 are adjacent to each other. The first organic EL element OLED1 has a first organic layer ORG1. The second organic EL element OLED2 has a second organic layer ORG2 that emits light in a color different from that of the first organic layer ORG1. Each of the first organic EL element OLED1 and the second organic EL element OLED2 includes a first divided portion 121 and a second divided portion 122 as a divided layer 120, and has regions A1 to A3, respectively.

  In the example shown in FIG. 10, the first organic layer ORG1 reaches the region A1 of the second organic EL element OLED2 over the partition wall PI between the first organic EL element OLED1 and the second organic EL element OLED2. . In such a state, since the first organic layer ORG1 and the second organic layer ORG2 are stacked in the region A1 of the second organic EL element OLED2, the emission color of the first organic layer ORG1 and the second organic layer ORG2 are stacked. A so-called color mixing failure occurs in which the light emission color is mixed.

  Therefore, the first organic layer ORG1 and the second organic layer stacked on the dividing layer 120 and the partition wall PI so as to surround the region A1 where the color mixing failure occurs by irradiating the laser toward the partition layer 120 and the partition wall PI. ORG2 and the counter electrode are removed in a loop. Here, the region A1 of the second organic EL element OLED2 is surrounded by the partition wall PI and the first divided portion 121. The laser scans in a loop shape passing over the partition walls PI and the first division part 121 surrounding the region A1, and repair processing is performed. As a result, the first organic layer ORG1, the second organic layer ORG2, and the groove GV lacking the counter electrode are formed. From this groove GV, the partition wall PI and the first division part 121 are exposed.

  FIG. 11 is a cross-sectional view schematically showing the first organic EL element OLED1 and the second organic EL element OLED2 after repair. In FIG. 11, only the main parts necessary for explanation are shown.

  The pixel electrode PE of the first organic EL element OLED1 and the pixel electrode PE of the second organic EL element OLED2 arranged on the insulating film 114 are respectively a region A1 between the partition wall PI and the first division part 121, and It is divided into a region A2 between the first dividing unit 121 and the second dividing unit 122 and a region A3 between the second dividing unit 122 and the partition wall PI. The first organic layer ORG1 of the first organic EL element OLED1 is disposed on the pixel electrode PE and the dividing layer 120, and is also disposed on the partition wall PI between the second organic EL element OLED2, It arrange | positions also on area | region A1 of the pixel electrode PE of 1st organic EL element OLED1. The second organic layer ORG2 of the second organic EL element OLED2 is disposed on the pixel electrode PE and the division layer 120, and is also disposed on the first organic layer ORG1 in the region A1. The counter electrode CE is disposed on the first organic layer ORG1 and the second organic layer ORG2.

  After the repair, the first organic layer ORG1 and the counter electrode CE on the partition wall PI between the first organic EL element OLED1 and the second organic EL element OLED2 are missing, the groove GV is formed, and the second In the organic EL element OLED2, the second organic layer ORG2 and the counter electrode CE on the first divided portion 121 are missing, and a groove GV is formed. That is, in the second organic EL element OLED2, a part of the first division part 121 and a part of the partition wall PI are exposed from the groove GV.

  The first organic layer ORG1, the second organic layer ORG2, and the counter electrode CE that are surrounded by the groove GV remain. However, the counter electrode inside the groove GV (that is, the counter electrode corresponding to the region A1) CE is different from the counter electrode outside the groove GV (that is, the counter electrode corresponding to the regions A2 and A3 and the counter electrode on the partition wall PI). It is separated.

  Due to the formation of the groove GV, a potential is not supplied to the counter electrode CE surrounded by the groove GV. On the other hand, the counter electrode CE outside the groove GV is continuous and can be supplied with a potential. That is, the region A1 in the second organic EL element OLED2 is electrically separated from the other regions A2 and A3. Therefore, while the area A1 is darkened, in the other areas A2 and A3, a normal flow normally flows between the pixel electrode PE and the counter electrode CE, and light emission is possible in the organic layer ORG. That is, the regions A2 and A3 are regions that substantially contribute to light emission.

  As described above, by arranging the dividing layer 120 that divides the pixel electrode PE into a plurality of regions, even if a color mixing failure occurs, only the region is electrically separated and darkened, The region can emit light normally, and repair is possible. Therefore, it is possible to realize a better display quality than before the repair.

  In the present embodiment, the more the region into which the pixel electrode PE is divided, the smaller the area of the region to be darkened at the time of repair. Therefore, the area of the region that substantially contributes to light emission in the light emitting region EA. Can be secured greatly. For this reason, the light emitting state of the organic EL element OLED after repair is close to the light emitting state of the organic EL element OLED having the normal light emitting area EA, and better display quality can be obtained.

  In the pixel electrode PE, when the areas of the divided areas are substantially equal, there is little change in the area contributing to light emission according to the area to be darkened. In other words, if there is a difference in area between the divided areas, if the area with a relatively large area is turned into a dark spot, the area contributing to light emission is reduced, and conversely, the area with a relatively small area is destroyed. In the case of the dotization, the area contributing to light emission increases. On the other hand, when the pixel electrode PE is divided by substantially the same area, the area that contributes to light emission after repair can be made substantially equal regardless of which area is darkened.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the components without departing from the gist of the invention in the stage of implementation. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  In the present embodiment, the organic EL display device has been described as the organic EL device, but the present invention can also be used for organic EL lighting, an organic EL printer head, and the like.

DESCRIPTION OF SYMBOLS 1 ... Display panel 100 ... Array substrate 120 ... Dividing layer 121 ... 1st dividing part 122 ... 2nd dividing part OLED ... Organic EL element PE ... Pixel electrode CE ... Counter electrode ORG ... Organic layer PI ... Partition GV ... Groove

Claims (5)

An insulating substrate;
A pixel electrode disposed above the insulating substrate;
Barrier ribs arranged around the pixel electrode;
A dividing layer disposed on the pixel electrode and dividing the pixel electrode exposed from the partition wall into a plurality of regions;
An organic layer disposed on the pixel electrode and the divided layer;
A counter electrode disposed on the organic layer;
An organic EL device comprising: An insulating substrate;
A pixel electrode disposed above the insulating substrate;
Barrier ribs arranged around the pixel electrode;
A dividing layer connected to the partition wall and disposed on the pixel electrode and dividing the pixel electrode exposed from the partition wall into a plurality of regions with the partition wall;
An organic layer disposed on the pixel electrode and the divided layer;
A counter electrode covering the organic layer and the partition;
The organic layer and the counter electrode are missing in a loop shape, a groove exposing a part of the divided layer,
An organic EL device comprising:   The organic EL device according to claim 2, wherein the groove is formed along the divided layer and the partition wall.   The organic EL device according to claim 1, wherein the divided layer is formed of the same material as the partition wall.   3. The organic EL device according to claim 1, wherein areas of the regions divided by the divided layers are substantially equal.

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