JP2012150901A - Organic el display device and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an organic EL display device capable of improving the reliability by suppressing degradation of an organic EL element, and an electronic apparatus with the organic EL display device.SOLUTION: An organic EL display device 1 is provided with an organic insulation layer 151 on the lower layer side and an organic insulation layer 152 on the upper layer side which are installed to extend from a display area 110A to a peripheral area 110B on a substrate 11, and an organic layer 160 installed to extend from the display area 110A to a portion of the peripheral area 110B on the organic insulation layers 151 and 152. The organic EL display device 1 is also provided with a separation groove 21 which is formed in a region between the display area 110A and the peripheral area 110B for separating the organic insulation layer 151 into the organic insulation layers 151 on the side of the display area 110A and on the side of the peripheral area 110B, and a separation groove 22 (removal part) formed by removing at least the organic insulation layer 152 of the organic insulation layers 151, 152 in at least a portion of the region on the outer edge side of the formation region of the organic layer 160.

Description

  The present invention relates to an organic EL display device that emits light using an organic electroluminescence (EL) phenomenon, and an electronic apparatus including such an organic EL display device.

  An organic EL device that emits light by utilizing the EL phenomenon of an organic material is configured by providing an organic layer in which an organic hole transport layer or an organic light emitting layer is laminated between an anode and a cathode, and is driven by a low voltage direct current. As a light-emitting element that can emit light with high luminance, attention has been paid. However, in a display device (organic EL display device) using this organic EL element, the organic layer in the organic EL element is deteriorated due to moisture absorption, and the light emission luminance in the organic EL element is lowered or the light emission is unstable. There was a problem that stability over time was low and life was short.

  Therefore, for example, in Patent Document 1, a cover material for sealing is disposed on the element forming surface side of the substrate on which the organic EL elements and other circuits are formed, and the peripheral portion between the substrate and the cover material is a sealing material. There has been proposed an organic EL display device which is sealed with the above. Further, this Patent Document 1 also proposes a structure in which the outside of the sealing material is covered with a hard carbon film as a protective film that prevents intrusion of water vapor or the like. With such a configuration, the organic EL element formed on the substrate is completely cut off from the outside, and it is possible to prevent substances such as moisture and oxygen that promote deterioration due to oxidation of the organic EL element from entering from the outside. It has become.

  In addition to this, a completely solid organic material in which a cover material for sealing is bonded to an element forming surface side of the substrate on which an organic EL element or other circuit is formed via an adhesive. An EL display device has also been proposed.

JP 2002-93576 A JP 2006-54111 A JP 2008-283222 A

  However, in the organic EL display device having the above-described configuration, moisture remaining in the display device, for example, foreign matter (dust) generated during the manufacturing process of the display device and remaining in the display device is adsorbed. It was not possible to prevent the diffusion of moisture. For this reason, it has been difficult to prevent the deterioration of the organic layer due to such moisture diffusion.

  In particular, in an organic EL display device, an interlayer insulating film is generally provided so as to cover a drive circuit configured using a thin film transistor (TFT), and organic EL elements are arrayed on the interlayer insulating film. It has been configured. In this case, in order to reduce the level difference caused by the formation of the drive circuit and form the organic EL element on the flattened surface, the interlayer insulating film is formed by a flattened film using, for example, an organic photosensitive insulating film. . However, since the interlayer insulating film (organic insulating film) made of such an organic material easily allows water to pass therethrough, the water left in the display device while adhering to the foreign matter as described above diffuses through the organic insulating film. There was a problem that it was easy to do.

  Therefore, in order to solve such a problem, a separation groove for separating the organic insulating film described above into the inner region side and the outer region side is formed at a position surrounding the display region (the outer edge side of the display region). Organic EL display devices have been proposed (see, for example, Patent Documents 2 and 3). By providing such a separation groove, it is possible to prevent moisture existing on the outer region side in the organic insulating film from entering the inner region side (display region side) through the organic insulating film. Therefore, it is possible to suppress the deterioration of the organic layer (organic EL element) due to the moisture left in the display device passing through the organic insulating film as described above.

  However, in the structure proposed in Patent Documents 2 and 3, when an area mask is used when forming an organic layer or the like as in the case of a white organic EL element or the like, the following problems occur. Therefore, there was room for improvement. That is, in such a case, in consideration of the misalignment of the area mask (mask misalignment region) and the wraparound of the film (taper region), the separation groove described above is actually formed at a position sufficiently away from the display region. There is a need to. For this reason, it is necessary to take a large frame (necessary to increase the distance between the display region and the peripheral region), and it becomes difficult to reduce the frame (reduction in size and cost of the display device). End up. In addition, it is necessary to increase the distance between the display region and the peripheral region. This is because moisture contained in the organic insulating layer in this region (inner region of the separation groove) enters the organic layer. As a result, the organic layer deteriorates.

  The present invention has been made in view of such problems, and an object thereof is to provide an organic EL display device capable of suppressing deterioration of an organic EL element and improving reliability, and such an organic EL display device. Is to provide electronic equipment.

  The organic EL display device of the present invention is provided with a display region having a plurality of pixels, a peripheral region provided on the outer edge side of the display region, having a peripheral circuit, and extending from the display region to the peripheral region on the substrate. The first insulating layer on the lower layer side, the second insulating layer on the upper layer side, and the first and second insulating layers are provided so as to extend from the display region to a part of the peripheral region. An organic layer, a first separation groove formed in a region between the display region and the peripheral region, and separating the first insulating layer into the display region side and the peripheral region side; and an organic layer forming region And a removal part formed by removing at least the second insulating layer of the first and second insulating layers, formed in at least a part of the region on the outer edge side.

  An electronic apparatus according to the present invention includes the organic EL display device according to the present invention.

  In the organic EL display device and the electronic apparatus of the present invention, a first separation groove for separating the first insulating layer into the display region side and the peripheral region side is formed in a region between the display region and the peripheral region. ing. Further, a removal portion formed by removing at least the second insulating layer of the first and second insulating layers is formed in at least a part of the region on the outer edge side of the organic layer forming region. Thus, unlike the conventional case where the separation groove for separating the first and second insulating layers is formed in a partial region on the outer edge side of the formation region of the organic layer, the removal portion and the first separation groove Moisture contained in the first insulating layer in the intermediate region (corresponding to the internal region of the separation groove in the conventional case) is prevented from entering the organic layer.

  According to the organic EL display device and the electronic apparatus of the present invention, the first separation groove for separating the first insulating layer into the display region side and the peripheral region side is provided in the region between the display region and the peripheral region. At the same time, a removal portion is formed by removing at least the second insulating layer of the first and second insulating layers in at least a part of the outer edge side of the organic layer forming region. Therefore, it is possible to prevent moisture contained in the first insulating layer in the region between the removal portion and the first separation groove from entering the organic layer. Therefore, it is possible to improve the reliability by suppressing the deterioration of the organic EL element, and it is also possible to narrow the frame.

It is a figure showing the structure of the organic electroluminescence display which concerns on one embodiment of this invention. It is a figure showing an example of the pixel drive circuit shown in FIG. FIG. 2 is a plan view schematically showing an example of an arrangement relationship between a display area and a peripheral area shown in FIG. 1 and each separation groove. It is arrow sectional drawing in the area | region along the II-II line shown in FIG. It is sectional drawing showing the structure of the organic electroluminescence display which concerns on a comparative example. 10 is a cross-sectional view illustrating a configuration of an organic EL display device according to Modification 1. FIG. 12 is a cross-sectional view illustrating a configuration of an organic EL display device according to Modification 2. FIG. 10 is a cross-sectional view illustrating a configuration of an organic EL display device according to Modification 3. FIG. 10 is a cross-sectional view illustrating a configuration of an organic EL display device according to Modification 4. FIG. 10 is a cross-sectional view illustrating a configuration of an organic EL display device according to Modification Example 5. FIG. 10 is a cross-sectional view illustrating a configuration of an organic EL display device according to Modification 6. FIG. 10 is a plan view schematically showing a schematic configuration of an organic EL display device according to Modification 7. FIG. It is arrow sectional drawing showing the structural example of the area | region along the III-III line shown in FIG. It is arrow sectional drawing showing the other structural example of the area | region along the III-III line shown in FIG. It is arrow sectional drawing showing the structural example of the area | region along the IV-IV line shown in FIG. It is a top view showing schematic structure of the module containing display apparatuses, such as the said embodiment. It is a perspective view showing the external appearance of the application example 1 of display apparatuses, such as the said embodiment. (A) is a perspective view showing the external appearance seen from the front side of the application example 2, (B) is a perspective view showing the external appearance seen from the back side. 12 is a perspective view illustrating an appearance of application example 3. FIG. 14 is a perspective view illustrating an appearance of application example 4. FIG. (A) is a front view of the application example 5 in an open state, (B) is a side view thereof, (C) is a front view in a closed state, (D) is a left side view, and (E) is a right side view, (F) is a top view and (G) is a bottom view.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The description will be given in the following order.

1. Embodiment (example in which first to fourth separation grooves are provided)
2. Modifications Modifications 1 to 3 (example in which the third separation groove is not provided)
Modification 4 (example in which the fourth separation groove is not provided)
Modification 5 (example in which both the third and fourth separation grooves are not provided)
Modifications 6 and 7 (Examples in which a removal portion is formed by removing the organic insulating layer in the entire region up to the edge of the substrate instead of the second to fourth separation grooves)
3. Application example (application example to electronic equipment)

<Embodiment>
[Example of overall configuration of organic EL display device]
FIG. 1 shows an overall configuration example of an organic EL display device (an organic EL display device 1 described later) according to an embodiment of the present invention. This organic EL display device is used as an organic EL television device or the like, and a display region 110 </ b> A is provided on a substrate 11. A plurality of pixels (red pixels 10R, green pixels 10G, blue pixels 10B) are arranged in a matrix in the display area 110A. Further, a signal line driving circuit 120 and a scanning line driving circuit 130 which are drivers for video display (a peripheral circuit 12B described later) are provided in the peripheral area 110B located around the display area 110A (outer edge side, outer peripheral side). It has been.

  A pixel drive circuit 140 is provided in the display area 110A. FIG. 2 shows an example of the pixel driving circuit 140 (an example of a pixel circuit of the red pixel 10R, the green pixel 10G, and the blue pixel 10B). The pixel drive circuit 140 is an active drive circuit formed below a lower electrode 161 described later. The pixel driving circuit 140 includes a driving transistor Tr1 and a writing transistor Tr2, and a capacitor (holding capacity) Cs between the transistors Tr1 and Tr2. The pixel drive circuit 140 also includes a white organic EL element 10W connected in series to the drive transistor Tr1 between the first power supply line (Vcc) and the second power supply line (GND). That is, the white organic EL element 10W is provided in each of the red pixel 10R, the green pixel 10G, and the blue pixel 10B. The drive transistor Tr1 and the write transistor Tr2 are configured by a general thin film transistor (TFT), and the configuration may be, for example, an inverted stagger structure (so-called bottom gate type) or a stagger structure (top gate type). There is no particular limitation.

  In the pixel driving circuit 140, a plurality of signal lines 120A are arranged in the column direction, and a plurality of scanning lines 130A are arranged in the row direction. The intersection of each signal line 120A and each scanning line 130A corresponds to one of the red pixel 10R, the green pixel 10G, and the blue pixel 10B. Each signal line 120A is connected to the signal line drive circuit 120, and an image signal is supplied from the signal line drive circuit 120 to the source electrode of the write transistor Tr2 via the signal line 120A. Each scanning line 130A is connected to the scanning line driving circuit 130, and a scanning signal is sequentially supplied from the scanning line driving circuit 130 to the gate electrode of the writing transistor Tr2 via the scanning line 130A.

[Example of planar configuration of organic EL display device]
FIG. 3 is a plan view schematically showing an example of the arrangement relationship between the display area 110A and the peripheral area 110B shown in FIG. 1 and each separation groove (separation grooves 21 to 24) described later.

  As shown in FIG. 3, four (four types) separation grooves 21, 22, 23, 24 are formed in the vicinity of the formation region of the display basin 110A and the peripheral region 110B (the inner periphery, the outer periphery, and the interior thereof). Is formed. Specifically, a separation groove 21 is formed in a region between the display region 110A and the peripheral region 110B. In addition, a separation groove 22 is formed in a partial region in the peripheral region 110B. Further, a separation groove 23 is formed in a region between the separation groove 22 and the end portion of the substrate 11. In addition, a separation groove 24 is formed in a region between the separation groove 23 and the end of the substrate 11 (a region corresponding to a sealing material 18B described later). The detailed configuration of these separation grooves 21 to 24 will be described later (FIG. 4).

  Here, each of the above-described separation grooves 21 to 24 is a specific example of “first separation groove”, “second separation groove”, “third separation groove”, and “fourth separation groove” in the present invention. Corresponds to the example. The separation groove 22 also corresponds to a specific example of “removal part” in the present invention.

[Cross-sectional structure of organic EL display device 1]
FIG. 4 shows a cross-sectional configuration taken along the line II-II shown in FIG. 3 (a region from the vicinity of the boundary region between the display region 110A and the peripheral region 110B to the end of the substrate 11). It is. In the organic EL display device 1 of the present embodiment, the color light of any one of R (red), G (green), and B (blue) is displayed on the upper surface by using the white organic EL element 10W described above and a color filter described later. This is a top emission type (so-called top emission type) display device that is emitted from the (surface opposite to the substrate 11) side.

  The organic EL display device 1 includes a pixel driving circuit 12A (corresponding to the pixel driving circuit 140 described above), a peripheral circuit 12B and metal layers 13A and 13B, an inorganic insulating layer 14, an organic insulating layer 151 on a substrate 11. The lower electrode 161, the organic insulating layer 152, the organic layer 160, the upper electrode 162, the protective layer 17, the filler layer (adhesive layer) 18A and the sealing material 18B, and the BM (black matrix) layer 19B It has a laminated structure laminated in this order. In addition, a sealing substrate 19 is bonded onto the laminated structure so that the laminated structure is sealed.

  The substrate 11 is a support on which white organic EL elements 10W are arranged and formed on one main surface side. As the substrate 11, for example, quartz, glass, metal foil, or a resin film or sheet is used.

  The peripheral circuit 12B is a driving circuit (video display driver) including the signal line driving circuit 120 and the scanning line driving circuit 130 described above. The peripheral circuit 12B is formed on the lower layer side of the organic insulating layer 151 (specifically, between the substrate 11 and the inorganic insulating layer 14) in the display region 110A on the substrate 11.

  The metal layer 13A functions as a wiring layer for the pixel drive circuit 12A (140) and the peripheral circuit 12B. The metal layer 13B functions as a wiring layer (electrode) for making contact with a lower electrode 161 described later (cathode contact line). Each of these metal layers 13A and 13B is made of a single element or an alloy of a metal element such as aluminum (Al), copper (Cu), titanium (Ti), and the like.

The inorganic insulating layer 14 is formed substantially uniformly on the pixel driving circuit 12A, the peripheral circuit 12B, the metal layers 13A and 13B, and the substrate 11. The inorganic insulating film 14 is made of, for example, silicon oxide (SiO _x ), silicon nitride (SiN _x ), silicon oxynitride (SiN _x O _y ), titanium oxide (TiO _x ), aluminum oxide (Al _x O _y ), or the like. Made of inorganic material.

  Each of the organic insulating layers 151 and 152 functions as an inter-pixel insulating film. The organic insulating film 151 is formed on the lower layer side, and the organic insulating film 152 is formed on the upper layer side. These organic insulating layers 151 and 152 are formed on the substrate 11 so as to extend from the display region 110A to the external region (from the peripheral region 110B to the end of the substrate 11). Each of the organic insulating films 151 and 152 is made of an organic material such as polyimide, acrylic, or siloxane. The organic insulating layer 151 corresponds to a specific example of “first insulating layer” in the present invention, and the organic insulating layer 152 corresponds to a specific example of “second insulating layer” in the present invention.

  The lower electrode 161, the organic layer 160, and the upper electrode 162 have a laminated structure that constitutes the white organic EL element 10W described above.

  The lower electrode 161 functions as an anode (anode electrode), and is provided for each color pixel in the display region 110A. The lower electrode 161 is also formed substantially uniformly in the external region (mainly the peripheral region 110B) of the display region 110A. Then, as indicated by reference numeral P1 in FIG. 4, the lower electrode 161 is cut in the vicinity of the boundary between the display region 110A and the peripheral region 110B, and the two regions are electrically non-conductive. Such a lower electrode 161 is made of, for example, a metal material (for example, aluminum (Al) or an alloy of ITO (Indium Tin Oxide) and silver (Ag)) having a light reflectance of about 70% or more. Become.

  The upper electrode 162 functions as a cathode (cathode electrode), and is provided as an electrode common to each pixel in the display region 110A. The upper electrode 162 is also formed on the substrate 11 so as to extend from the display region 110A to its external region (from the peripheral region 110B to the vicinity of the formation region of the metal layer 13B). Such an upper electrode 162 is made of a transparent electrode, and is preferably made of a material such as ITO, IZO (Indium Zink Oxide) or ZnO (zinc oxide).

  The organic layer 160 is formed on the organic insulating layers 151 and 152 (specifically, on the organic insulating layer 152) so as to extend from the display region 110A to a part of the peripheral region 110B. Specifically, the organic layer 160 is formed from the display region 110A to the tapered region A1 shown in FIG. The taper region A1 is a region around the film when the organic layer 160 is formed, and is a region formed on the outer edge (outer periphery) of the display region 110A.

  The organic layer 160 has a stacked structure in which a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer (all not shown) are stacked in this order from the lower electrode 161 side. Yes. Of these layers, layers other than the light emitting layer may be provided as necessary. The hole injection layer is provided to increase hole injection efficiency and prevent leakage. The hole transport layer is for increasing the efficiency of transporting holes to the light emitting layer. In the light emitting layer, recombination of electrons and holes occurs when an electric field is applied to generate light. The electron transport layer is for increasing the efficiency of electron transport to the light emitting layer. In addition, the constituent material of the organic layer 160 should just be a general low molecular or high molecular organic material, and is not specifically limited.

The protective layer 17 is formed substantially uniformly on the upper electrode 162 and the organic insulating layer 152. The protective layer 17 is made of an inorganic material such as silicon oxide (SiO _x ), silicon nitride (SiN _x ), silicon oxynitride (SiN _x O _y ), titanium oxide (TiO _x ), or aluminum oxide (Al _x O _y ). Made of material.

  The filler layer 18A is formed almost uniformly on the protective layer 17 and functions as an adhesive layer. The filler layer 18A is made of, for example, an epoxy resin or an acrylic resin.

  The sealing material 18 </ b> B is a member for sealing each layer between the substrate 11 and the sealing substrate 19 from the outside, which is disposed at an end portion (end edge portion) of the substrate 11. Such a sealing material 18B is also made of, for example, an epoxy resin or an acrylic resin.

  The sealing substrate 19 seals the white organic EL element 10W together with the filler layer 18A and the sealing material 18B. The sealing substrate 19 is made of a material such as glass that is transparent to each color light emitted from the red pixel 10R, the green pixel 10G, and the blue pixel 10B. On the surface of the sealing substrate 19 on the substrate 11 side, for example, a color filter (not shown) including a red filter, a green filter, and a blue filter, and a BM layer (light shielding film) are provided. Thereby, white light emitted from each white organic EL element 10W in the red pixel 10R, the green pixel 10G, and the blue pixel 10B passes through the color filters of the respective colors, so that red light, green light, and blue light are transmitted. Are emitted respectively. Further, the external light reflected in the red pixel 10R, the green pixel 10G, and the blue pixel 10B and the wiring between them is absorbed, and the contrast is improved.

(Separation grooves 21 to 24)
In the organic EL display device 1 of the present embodiment, the above-described separation grooves 21 to 24 are also formed.

  The separation groove 21 is formed in a region between the display region 110A and the peripheral region 110B, and is a groove for separating the organic insulating layer 151 into the display region 110A side and the peripheral region 110B side. The separation groove 21 is covered with at least the organic insulating layer 152 (here, the organic insulating layer 152, the organic layer 160, the upper electrode 162, the protective layer 17, and the like). The inner diameter of the separation groove 21 is, for example, about 10 to 100 μm, and the depth of the separation groove 21 is, for example, about 500 to 5000 nm.

  The separation groove 22 is a partial region in the peripheral region 110B (in the region corresponding to the peripheral circuit 12B), specifically, the region where the organic layer 160 is formed and the outer periphery of the assumed tapered region A1 and mask displacement region A2. It is formed in a region on the side (outer edge side). The separation groove 22 is a groove formed by removing at least the organic insulating layer 152 (here, only the organic insulating layer 152) of the organic insulating layers 151 and 152, and at least the organic insulating layer 152 (here, the organic insulating layer 152). Only) is separated into the inner region side and the outer region side. The inner diameter of the separation groove 22 is, for example, about 10 to 100 μm, and the depth of the separation groove 22 is, for example, about 500 to 5000 nm.

  The separation groove 23 is formed in a region between the separation groove 22 and the end portion of the substrate 11 and is a groove for separating the organic insulating layers 151 and 152 into the inner region side and the outer region side, respectively. is there. The inner diameter of the separation groove 23 is, for example, about 10 to 100 μm, and the depth of the separation groove 23 is, for example, about 500 to 5000 nm.

  The separation groove 24 is formed in a region between the separation groove 23 and the end portion of the substrate 11, specifically, a region corresponding to the sealing material 18 </ b> B. And a groove for separating the outer region side. The inner diameter of the separation groove 24 is, for example, about 10 to 1000 μm, and the depth of the separation groove 24 is, for example, about 500 to 5000 nm.

[Method for Manufacturing Organic EL Display Device 1]
The organic EL display device 1 can be manufactured as follows, for example.

  First, the pixel drive circuit 12A (140) and the peripheral circuit 12B are formed on the substrate 11 made of the above-described material. At the same time, the metal layers 13A and 13B made of the above-described materials are formed by, for example, sputtering to form a desired shape by, for example, photolithography. After that, the inorganic insulating layer 14 made of the above-described material is formed on the pixel driving circuit 12A, the peripheral circuit 12B, and the metal layers 13A and 13B by using, for example, a plasma CVD (Chemical Vapor Deposition) method. Form. However, the film formation method at this time is not limited to the above-described CVD method, and for example, a PVD (Physical Vapor Deposition) method, an ALD (Atomic Layer Deposition) method, or (vacuum) An evaporation method or the like may be used.

  Subsequently, an organic insulating layer 151 made of the above-described material is formed on the inorganic insulating layer 14 by a coating method (wet method) such as a spin coating method or a droplet discharge method. After that, the separation groove 21 is formed in a region between the display region 110A and the peripheral region 110B by selective etching with respect to the organic insulating layer 151 using, for example, a photolithography method. As a result, the inorganic insulating layer 14 is exposed at the bottom of the separation groove 21 and the organic insulating layer 151 is separated into the display region 110A side and the peripheral region 110B side. Next, the lower electrode 161 made of the above-described material is formed on the organic insulating layer 151 by, for example, sputtering, and then patterned by a desired shape by, for example, photolithography. Thereby, the side surface and the bottom (bottom surface) of the separation groove 21 are covered with the lower electrode 161, respectively. In forming the lower electrode 161, the lower electrode 161 is cut in the vicinity of the boundary between the display region 110A and the peripheral region 110B as shown by the reference symbol P1 in FIG. Be electrically non-conductive.

  Next, the organic insulating layer 152 made of the above-described material is formed on the lower electrode 161 and the organic insulating layer 151 by, for example, a coating method (wet method) such as a spin coating method or a droplet discharge method. After that, the isolation trench 22 is formed in a part of the peripheral region 110B (in the region corresponding to the peripheral circuit 12B) by selective etching with respect to the organic insulating layer 152 using, for example, photolithography. Specifically, the separation groove 22 is formed in the region where the organic layer 160 is to be formed and the outer peripheral side (outer edge side) of the assumed tapered region A1 and mask displacement region A2. As a result, the lower electrode 161 is exposed at the bottom of the separation groove 22, and the organic insulating layer 152 is separated into the inner region side and the outer region side.

  Subsequently, the organic layer 160 (each layer) made of the above-described material is formed on the organic insulating layer 152 by using, for example, an evaporation method using an area mask that covers the display region 110A. At this time, in practice, the organic layer 160 is formed from the display area 110A to the tapered area A1 shown in FIG. Further, in consideration of the positional deviation of the area mask described above, the organic layer 160 may be formed up to the mask deviation area A2 shown in FIG.

  Next, the separation groove 23 is formed in a region between the separation groove 22 and the end portion of the substrate 11 by selective etching of the organic insulating layers 151 and 152 and the inorganic insulating layer 14 using, for example, a photolithography method. . As a result, the metal layer 13B is exposed at the bottom of the separation groove 23, and the organic insulating layers 151 and 152 are separated into the inner region side and the outer region side, respectively. After that, the upper electrode 162 made of the above-described material is formed on the organic insulating layer 152 and the organic layer 160 by using, for example, a vapor deposition method using a predetermined area mask. Thereby, the side surfaces and bottom portions (bottom surfaces) of the separation grooves 22 and 23 are respectively covered with the lower electrode 161.

  Next, a region between the separation groove 23 and the end portion of the substrate 11 (specifically, a region where the sealing material 18B is to be formed) by selective etching of the organic insulating layers 151 and 152 using, for example, a photolithography method. In addition, the separation groove 24 is formed. Thereby, the inorganic insulating layer 14 is exposed at the bottom of the separation groove 24, and the organic insulating layers 151 and 152 are separated into the inner region side and the outer region side, respectively. After that, the protective layer 17 made of the above-described material is formed on the organic insulating layer 152 and the upper electrode 162 by using, for example, a plasma CVD method, a PVD method, an ALD method, an evaporation method, or the like. Thereby, the side surfaces and bottom portions (bottom surfaces) of the separation grooves 22, 23, 24 are respectively covered with the protective layer 17.

  Subsequently, the BM layer 19 and the color filter are respectively applied on the sealing substrate 19 made of the above-described material by, for example, a spin coating method, and then patterned by using a photolithography method.

  Next, the filler layer 18A and the sealing material 18B made of the materials described above are formed on the sealing substrate 19, respectively. At this time, the sealing material 18B is disposed corresponding to the formation region of the separation groove 24 when the substrate 11 and the sealing substrate 19 are bonded together, and the inside of the separation groove 24 is filled with the sealing material 18B. Like that. After that, the sealing substrate 19 is bonded with the filler layer 18A and the sealing material 18B in between. Thus, the organic EL display device 1 shown in FIGS. 3 and 4 is completed.

[Operation and effect of organic EL display device 1]
In the organic EL display device 1, a scanning signal is supplied to each pixel from the scanning line driving circuit 130 via the gate electrode of the writing transistor Tr2, and an image signal is sent from the signal line driving circuit 120 via the writing transistor Tr2. Is held in the holding capacitor Cs. That is, the driving transistor Tr1 is controlled to be turned on / off according to the signal held in the holding capacitor Cs, whereby the driving current Id is injected into the white organic EL element 10W, and the holes and electrons are recombined to emit light. Occur. Here, since the organic EL display device 1 is a top emission type (top emission type), the upper electrode 162, the protective layer 17, the filler layer 18A, each color filter (not shown), and sealing light. It passes through the substrate 19 and is taken out. In this way, video display (color video display) is performed on the organic EL display device 1.

  By the way, in such an organic EL display device, in general, deterioration of the organic layer in the organic EL element occurs due to moisture absorption, and the stability over time is low, such as light emission luminance in the organic EL element decreasing or light emission becoming unstable. In addition, there is a problem that the lifetime is short.

(Comparative example)
Therefore, the organic EL display device (organic EL display device 100) according to the comparative example shown in FIG. 5 solves the above problem (deterioration of the organic layer in the organic EL element due to moisture) as follows. ing. FIG. 5 shows a cross-sectional configuration of an organic EL display device 100 according to this comparative example. In the organic EL display device 100, two (two types) separation grooves 102 and 24 are formed at positions surrounding the display region 110A (the outer edge side and the outer periphery side of the display region 110A).

  Specifically, first, in the region corresponding to the sealing material 18B (near the end portion of the substrate 11), the organic insulating layers 151 and 152 are respectively disposed on the inner region side as in the organic EL display device 1 of the present embodiment. Separation grooves 24 are formed to separate the outer region and the outer region. Further, a separation groove is formed in a region between the display region 110A and the peripheral region 110B, specifically, in a region between the outer peripheral side (outer edge side) of the tapered region A1 and the mask displacement region A2 and the peripheral region 110B. 102 is formed. Unlike the separation groove 21 in the organic EL display device 1 of the present embodiment, the separation groove 102 separates both the organic insulating layers 151 and 152 into the display region 110A side and the peripheral region 110B side. ing.

  In the organic EL display device 100 of this comparative example, the separation groove 102 is provided, so that moisture present on the peripheral region 110B side in the organic insulating films 151 and 152 is contained in the organic insulating films 151 and 152. And entering the display area 110 </ b> A side is avoided. Therefore, in addition to preventing moisture from entering the organic layer 160 from the outside by the separation groove 24, moisture remaining in the organic display device 100 passes through the organic insulating films 151 and 152. In addition, the deterioration of the organic layer 160 can be suppressed.

  However, when an area mask is used when forming the organic layer 160 or the like constituting the white organic EL element 10W as in the case of the organic EL display device 1 of the present embodiment described above, the organic of this comparative example is used. In the EL display device 100, the following problems occur. That is, in such a case, considering the area mask misalignment (mask misalignment area A2 in the figure) and the wraparound of the film (taper area A1 in the figure), the separation groove 102 described above is sufficiently separated from the display area 110A. It is necessary to form at a position far away from each other. Specifically, as described above, the separation groove 102 is formed in a region between the outer peripheral side (outer edge side) of the tapered region A1 and the mask displacement region A2 and the peripheral region 110B. This is because the separation groove 102 is a groove for separating both of the organic insulating films 151 and 152, so that the organic layer 160 is formed (possibly) in the tapered region A1 and the mask displacement region A2. This is because the separation groove 102 cannot be formed.

  Therefore, in the organic EL display device 100 of the comparative example, it is necessary to take a wide frame as shown in FIG. 5 (necessary to widen the distance between the display region 110A and the peripheral region 110B), and the frame is narrowed. It becomes difficult to reduce the size and cost of the display device. In addition, since it is necessary to increase the distance between the display region 110A and the peripheral region 110B, moisture contained in the organic insulating layers 151 and 152 in this region (inner region of the separation groove 102) is added to the organic layer 160. The organic layer 160 is deteriorated due to the intrusion into the water.

(This embodiment)
On the other hand, in the organic EL display device 1 of the present embodiment, unlike the comparative example, only the organic insulating layer 151 is disposed on the display region 110A side and the periphery in the region between the display region 110A and the peripheral region 110B. A separation groove 21 is formed to separate the region 110B side. In addition, a part of the peripheral region 110B (in the region corresponding to the peripheral circuit 12B), specifically, the region where the organic layer 160 is formed and the outer peripheral side (outside) of the assumed tapered region A1 and mask displacement region A2 A separation groove 22 is formed in a region on the edge side. And this isolation | separation groove | channel 22 is a groove | channel from which only the organic insulating layer 152 was removed, and isolate | separates only the organic insulating layer 152 into the internal region side and the external region side. That is, in this organic EL display device 1, unlike the comparative example, the separation groove 21 that selectively separates the lower organic insulating film 151 on the inner peripheral side and the upper organic insulating film 152 on the outer peripheral side are provided. It has a two-stage separation groove structure with a separation groove 22 that is selectively separated.

  Thus, in the present embodiment, unlike the comparative example in which the separation groove 102 is formed, the region between the separation grooves 21 and 22 (corresponding to the inner region of the separation groove 102 in the comparative example) is formed by the separation groove 21. The moisture contained in the organic insulating layer 151 is prevented from entering the organic layer 160. In addition, since such a separation groove 21 can be formed in the region between the display region 110A and the peripheral region 110B (on the inner region side of the mask displacement region A2 and the taper region A1), compared with the above comparative example, The peripheral circuit 12B (peripheral region 110B) can be formed on the display region 110A side. That is, the frame can be narrowed (the distance between the display region 110A and the peripheral region 110B can be reduced) compared to the comparative example, and the frame can be narrowed (the display device can be reduced in size and cost). The

  Furthermore, since the separation grooves 23 and 24 described above are further formed on the outer peripheral side of the separation grooves 21 and 22, the separation grooves 23 and 24 allow moisture from the outside to enter the organic layer 160. Intrusion is avoided. Further, since it is possible to prevent moisture from entering the formation region (peripheral region 110B) of the peripheral circuit 12B from the outside, deterioration of characteristics of the peripheral circuit 12B due to such moisture is also reduced.

  As described above, in the present embodiment, the separation groove 21 that separates the organic insulating layers 151 and 152 into the display region 110A side and the peripheral region 110B side is formed in the region between the display region 110A and the peripheral region 110B. In addition, since the separation groove 22 formed by removing at least the organic insulating layer 152 of the organic insulating layers 151 and 152 is formed in at least a part of the region on the outer edge side of the region where the organic layer 160 is formed. It is possible to prevent moisture contained in the organic insulating layer 151 in the region between the separation grooves 21 and 22 from entering the organic layer 160. Therefore, it is possible to improve the reliability by suppressing the deterioration of the organic EL element, and it is possible to reduce the distance between the display region 110A and the peripheral region 110B, and to narrow the frame (the display device is downsized). , Cost reduction).

<Modification>
Subsequently, modified examples (modified examples 1 to 7) of the above-described embodiment will be described. In addition, the same code | symbol is attached | subjected to the same thing as the component in the said embodiment, and description is abbreviate | omitted suitably.

[Modifications 1 to 3]
6 shows a cross-sectional configuration of an organic EL display device (organic EL display device 1A) according to Modification 1, and FIG. 7 shows a cross-sectional configuration of an organic EL display device (organic EL display device 1B) according to Modification 2. FIG. 8 illustrates a cross-sectional configuration of an organic EL display device (organic EL display device 1C) according to Modification 3. The cross-sectional configurations shown in FIGS. 6 to 8 also correspond to the cross-sectional configurations in the region from the vicinity of the boundary region between the display region 110 </ b> A and the peripheral region 110 </ b> B to the edge of the substrate 11.

  In the organic EL display devices 1A, 1B, and 1C of the first to third modifications, the separation groove 23 is not formed (not provided) in the organic EL display device 1 of the above-described embodiment. Is the same. Further, in the organic EL display devices 1A and 1B, the separation groove 22 is covered with the upper electrode 162 and the protective layer 17, respectively, whereas in the organic EL display device 1C, the separation groove 22 is covered only with the protective layer 17. ing. Further, particularly in the organic EL display device 1B, the separation groove 22 is formed so as to reach the organic insulating layer 151 on the lower layer side. That is, in the organic EL display devices 1, 1 </ b> A, and 1 </ b> C, the separation groove 22 separates only the upper organic insulating layer 152, whereas in the organic EL display device 1 </ b> B, in addition to the organic insulating layer 152. The organic insulating layer 151 is also separated into the inner region side and the outer region side by the separation groove 22. Further, in this organic EL display device 1B, the lower electrode 161 extends only between the regions where the separation grooves 21 and 22 are formed, so that the lower electrode 161 and the upper electrode 162 are within the peripheral region 110B. Are not in contact with each other (not electrically connected).

  Also in the organic EL display devices 1A to 1C having such a configuration, the same effect can be obtained by the same operation as in the above embodiment. That is, it is possible to improve the reliability by suppressing the deterioration of the organic EL element, and it is possible to reduce the frame (reduction in size and cost of the display device).

  In particular, in the organic EL display device 1B, since the lower electrode 161 and the upper electrode 162 are not in contact with each other (not electrically connected) in the peripheral region 110B, for example, the lower electrode 161 is made of Al. In addition, when the upper electrode 162 is made of ITO, the following advantages are obtained. That is, in the case of such a combination of materials, when the lower electrode 161 and the upper electrode 162 are in contact with each other, there is a possibility that the electrode is eroded at the contact location, whereas in the organic EL display device 1B, such It is possible to avoid the occurrence of galvanic corrosion.

[Modifications 4 and 5]
9 shows a cross-sectional configuration of an organic EL display device (organic EL display device 1D) according to Modification 4, and FIG. 10 shows a cross-sectional configuration of an organic EL display device (organic EL display device 1E) according to Modification 5. Each one is represented. The cross-sectional configurations shown in FIGS. 9 and 10 also correspond to the cross-sectional configurations in the region from the vicinity of the boundary region between the display region 110A and the peripheral region 110B to the edge of the substrate 11.

  The organic EL display device 1D according to the modified example 4 shown in FIG. 9 is such that the separation groove 24 is not formed (not provided) in the organic EL display device 1 of the above-described embodiment. It is the same.

  Further, in the organic EL display device 1E according to the modified example 5 shown in FIG. 10, both the separation grooves 23 and 24 are not formed (not provided) in the organic EL display device 1 of the above embodiment. Yes, the other configurations are the same.

  Also in the organic EL display devices 1D and 1E having such a configuration, the same effect can be obtained by the same operation as in the above embodiment. That is, it is possible to improve the reliability by suppressing the deterioration of the organic EL element, and it is possible to reduce the frame (reduction in size and cost of the display device).

  However, the formation of the separation groove 23 and the separation groove 24 can more effectively suppress the deterioration of the organic layer 160 and the deterioration of the characteristics of the peripheral circuit 12B due to moisture as described above. It can be said that it is desirable to form the separation grooves 23 and 24.

[Modification 6]
FIG. 11 shows a cross-sectional configuration of an organic EL display device (organic EL display device 1F) according to Modification 6 (cross-sectional configuration in the region from the vicinity of the boundary region between the display region 110A and the peripheral region 110B to the edge of the substrate 11). It is a representation.

  Unlike the organic EL display devices 1 and 1A to 1E described so far, the organic EL display device 1F according to the present modification includes a removal portion 25 described below instead of the separation grooves 22 to 24. ing.

  Unlike the separation grooves 22 to 24, the removal portion 25 is formed by removing the organic insulating layers 151 and 152 over the region up to the end of the substrate 11 on the outer edge side of the formation region of the organic layer 160. Specifically, in the removal portion 25, the organic insulating layer 152 is removed in the entire region from the outer edge of the formation region of the organic layer 160 to the end portion of the substrate 11, and the peripheral region 110B (peripheral circuit) is removed. The organic insulating layer 151 is removed in the entire region from the outer edge to the end of the substrate 11. More specifically, the organic insulating layer 152 is removed in the entire region on the outer peripheral side (outer edge side) of the formation region of the organic layer 160 and the assumed tapered region A1 and mask displacement region A2. In this modification as well, a sealing material 18B is provided at the end of the substrate 11.

  Also in the organic EL display device 1 </ b> F of this modification example, the separation groove 21 prevents the moisture contained in the organic insulating layer 151 in the region between the separation groove 21 and the removal unit 25 from entering the organic layer 160. The Further, in this modification, the organic insulating layer 152 is removed in the entire outer peripheral side (outer edge side) of the tapered region A1 and the mask displacement region A2, and the entire outer peripheral side (outer edge side) of the peripheral region 110B. In the region, the organic insulating layer 151 is removed. Accordingly, the area where the organic insulating layers 151 and 152 are formed is smaller than that of the comparative example, and the moisture contained in the organic insulating layers 151 and 152 is reduced. Therefore, the amount of moisture that needs to be prevented from entering the display area 110A. Decrease.

  Therefore, also in this modification, the same effect can be obtained by the same operation as the above embodiment. That is, it is possible to improve the reliability by suppressing the deterioration of the organic EL element, and it is possible to reduce the frame (reduction in size and cost of the display device).

[Modification 7]
FIG. 12 schematically shows a schematic configuration of an organic EL display device (organic EL display device 1G) according to Modification 7 in a plan view. Specifically, in FIG. 12, the display region 110A and the peripheral region 110B, the separation groove 21 formation region, the organic layer 160 and the upper electrode 162 formation region, and the metal layer 13B (cathode contact line) formation region. FIG.

  13 and FIG. 14 are cross-sectional configuration examples taken along the line III-III shown in FIG. 12, respectively. FIG. 15 is an arrow view taken along the line IV-IV shown in FIG. Each of the cross-sectional configuration examples is shown. That is, the cross-sectional configuration examples shown in FIGS. 13 to 15 correspond to the cross-sectional configuration examples in the region from the vicinity of the boundary region between the display region 110 </ b> A and the peripheral region 110 </ b> B to the edge of the substrate 11. 13 and 14 each correspond to a cross-sectional configuration example in a region other than the above-described cathode contact line side, while FIG. 15 corresponds to a cross-sectional configuration example in the above-described region on the cathode contact line side.

  In the organic EL display device 1G of the present modification, a removal unit 26 described below is formed instead of the removal unit 25 in the organic EL display device 1F of the modification 6.

  Unlike the removal portion 25 in the modified example 6, the removal portion 26 is obtained by removing the organic insulating layer 152 in the entire region up to the end portion of the substrate 11 on the outer edge side of the formation region of the separation groove 21. . Specifically, the organic insulating layer 152 is removed in the formation region of the peripheral region 110B and the entire outer peripheral region. In this modification as well, a sealing material 18B is provided at the end of the substrate 11.

  Also in the organic EL display device 1G of this modification, the separation groove 21 prevents the moisture contained in the organic insulating layer 151 in the region between the separation groove 21 and the removal portion 26 from entering the organic layer 160. Is done. Further, in this modification, the organic insulating layer 152 is removed in the formation region of the peripheral region 110B and the entire peripheral region. Thereby, the formation region of the organic insulating layer 152 on the outer edge side of the display region 110A is smaller than that in the sixth modification, and the amount of moisture entering the display region 110A is smaller than that in the sixth modification. . Therefore, in this modification, the deterioration of the organic EL element can be further suppressed as compared with Modification 6, and the reliability can be further improved.

<Application example>
Hereinafter, application examples of the organic EL display devices (organic EL display devices 1, 1 </ b> A to 1 </ b> G) described in the above embodiments and modifications will be described. The organic EL display device of the above-described embodiment can be applied to electronic devices in various fields such as a television device, a digital camera, a notebook personal computer, a mobile terminal device such as a mobile phone, or a video camera. In other words, the organic EL display device according to the above-described embodiment or the like can be applied to electronic devices in various fields that display an externally input video signal or an internally generated video signal as an image or video. .

(module)
The organic EL display device according to the above-described embodiment or the like is incorporated into various electronic devices such as application examples 1 to 5 described later, for example, as a module as illustrated in FIG. In this module, for example, a region 210 exposed from the sealing substrate 19 or the like is provided on one side of the substrate 11, and the wiring of the signal line driving circuit 120 and the scanning line driving circuit 130 is extended to the exposed region 210. External connection terminals (not shown) are formed. The external connection terminal may be provided with a flexible printed circuit (FPC) 220 for signal input / output.

(Application example 1)
FIG. 17 illustrates an appearance of a television device to which the organic EL display device according to the above-described embodiment or the like is applied. This television apparatus has, for example, a video display screen unit 300 including a front panel 310 and a filter glass 320, and the video display screen unit 300 is configured by the organic EL display device according to the above-described embodiment and the like. ing.

(Application example 2)
FIG. 18 shows an appearance of a digital camera to which the organic EL display device according to the above-described embodiment or the like is applied. The digital camera includes, for example, a flash light emitting unit 410, a display unit 420, a menu switch 430, and a shutter button 440. The display unit 420 is configured by the organic EL display device according to the above-described embodiment and the like. Has been.

(Application example 3)
FIG. 19 illustrates an appearance of a notebook personal computer to which the organic EL display device according to the above-described embodiment or the like is applied. The notebook personal computer includes, for example, a main body 510, a keyboard 520 for inputting characters and the like, and a display unit 530 for displaying an image. The display unit 530 is an organic display according to the above-described embodiment and the like. An EL display device is used.

(Application example 4)
FIG. 20 shows an appearance of a video camera to which the organic EL display device according to the above-described embodiment or the like is applied. This video camera has, for example, a main body 610, a subject photographing lens 620 provided on the front side surface of the main body 610, a start / stop switch 630 at the time of photographing, and a display 640. Reference numeral 640 denotes the organic EL display device according to the above-described embodiment and the like.

(Application example 5)
FIG. 21 shows an appearance of a mobile phone to which the organic EL display device according to the above-described embodiment or the like is applied. For example, the mobile phone is obtained by connecting an upper housing 710 and a lower housing 720 with a connecting portion (hinge portion) 730, and includes a display 740, a sub-display 750, a picture light 760, and a camera 770. Yes. The display 740 or the sub-display 750 is configured by the organic EL display device according to the above-described embodiment or the like.

<Other variations>
Although the present invention has been described with the embodiment, the modification, and the application example, the present invention is not limited to the embodiment and the like, and various modifications are possible.

  For example, the material and thickness of each layer described in the above embodiment and the like, or the film formation method and film formation conditions are not limited, and other materials and thicknesses may be used, or other film formation methods and film formation may be performed. It is good also as film | membrane conditions. Specifically, for example, in the above-described embodiment and the like, the case where the “first and second insulating layers” in the present invention are organic insulating layers (organic insulating layers 151 and 152), respectively. These insulating layers may be made of a material other than an organic material.

  Further, in the above-described embodiments and the like, the case where the organic EL display device is of a top emission type (top emission type) has been described, but the present invention is not limited to this, for example, a configuration of a bottom emission type (bottom emission type). Also good. In the case of such a bottom emission type organic EL display device, light from the light emitting layer in the organic layer 160 passes through the lower electrode and the substrate 11 and is extracted outside. In such an organic EL display device, a so-called microcavity (microresonator) structure may be provided. This microresonator structure is, for example, a structure in which a plurality of layers having a predetermined refractive index difference are laminated between a pair of reflective films, and performs optical confinement by repeatedly reflecting incident light between the pair of reflective films. Is.

  Furthermore, in the said embodiment etc., although the structure of the organic EL element was mentioned concretely and demonstrated, it is not necessary to provide all the layers and you may further provide other layers.

  In addition, although the case of an active matrix display device has been described in the above embodiments and the like, the present invention can also be applied to a passive matrix display device. Furthermore, the configuration of the pixel driving circuit for active matrix driving is not limited to that described in the above embodiment, and a capacitor or a transistor may be added as necessary. In that case, a necessary driving circuit may be added in addition to the signal line driving circuit 120 and the scanning line driving circuit 130 described above in accordance with the change of the pixel driving circuit.

  DESCRIPTION OF SYMBOLS 1,1A-1G ... Organic EL display apparatus, 10R ... Red pixel, 10G ... Green pixel, 10B ... Blue pixel, 10W ... White organic EL element, 11 ... Substrate, 110A ... Display area, 110B ... Peripheral area, 12A (140 ) ... Pixel drive circuit, 12B ... Peripheral circuit, 13A, 13B ... Metal layer, 14 ... Inorganic insulating layer, 151, 152 ... Organic insulating layer, 160 ... Organic layer, 161 ... Lower electrode, 162 ... Upper electrode, 17 ... Protection 18A ... filler layer, 18B ... sealing material, 19 ... sealing substrate, 19B ... BM layer, 21-24 ... separation groove, 25, 26 ... removal part, A1 ... taper region, A2 ... mask displacement region.

Claims (13)

A display area having a plurality of pixels;
A peripheral region provided on an outer edge side of the display region and having a peripheral circuit;
A first insulating layer on the lower layer side and a second insulating layer on the upper layer side provided to extend from the display region to the peripheral region on the substrate;
An organic layer provided on the first and second insulating layers so as to extend from the display region to a part of the peripheral region;
A first separation groove formed in a region between the display region and the peripheral region and separating the first insulating layer into the display region side and the peripheral region side;
An organic layer comprising: a removal portion formed in at least a part of an outer edge side of the formation region of the organic layer, wherein at least the second insulating layer of the first and second insulating layers is removed. EL display device. 2. The organic EL according to claim 1, wherein the removal portion is formed by removing the first and second insulating layers over a region up to an end portion of the substrate on an outer edge side of the formation region of the organic layer. Display device. The organic EL display device according to claim 2, wherein a sealing material is disposed at an end portion of the substrate. The removal portion is a second separation portion that is formed in a partial region on the outer edge side of the formation region of the organic layer and separates at least the second insulating layer into an inner region side and an outer region side. Item 2. An organic EL display device according to Item 1. A third separation groove for separating the first and second insulating layers into the inner region side and the outer region side is formed in a region between the second separation groove and the end of the substrate. The organic EL display device according to claim 4. A sealing material is disposed at an end of the substrate;
The organic EL display device according to claim 5, wherein a fourth separation groove for separating the first and second insulating layers into an inner region side and an outer region side is formed in a region corresponding to the sealing material. . The organic EL display device according to claim 4, wherein the second separation groove is provided in a region corresponding to a region where the peripheral circuit is formed. The organic EL display device according to any one of claims 1 to 7, wherein the first separation groove is covered with at least the second insulating layer. The organic EL display device according to claim 1, wherein the peripheral circuit is formed on a lower layer side of the first insulating layer on the substrate. The organic EL display device according to claim 1, wherein each of the first and second insulating layers is an organic insulating layer. The anode, a hole injection layer as the organic layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer, and a cathode are provided in this order on the substrate. The organic EL display device according to any one of the above. The organic EL display device according to claim 1, wherein the plurality of pixels include a red pixel, a green pixel, and a blue pixel. With an organic EL display,
The organic EL display device
A display area having a plurality of pixels;
A peripheral region provided on an outer edge side of the display region and having a peripheral circuit;
A first insulating layer on the lower layer side and a second insulating layer on the upper layer side provided to extend from the display region to the peripheral region on the substrate;
An organic layer provided on the first and second insulating layers so as to extend from the display region to a part of the peripheral region;
A first separation groove formed in a region between the display region and the peripheral region and separating the first insulating layer into the display region side and the peripheral region side;
An electron that is formed in at least a part of the region on the outer edge side of the region where the organic layer is formed, and is formed by removing at least the second insulating layer of the first and second insulating layers. machine.

Images