JP5515522B2 - Color filter for organic electroluminescence display device and organic electroluminescence display device - Google Patents

Description

  The present invention relates to a color filter for an organic electroluminescence display device and an organic electroluminescence display device.

  An organic electroluminescence (hereinafter abbreviated as “organic EL”) display device has high visibility due to self-coloring, and, unlike a liquid crystal display device, is an all-solid-state display, has excellent impact resistance, and has a high response speed. Attention has been focused on advantages such as little influence from temperature changes and a large viewing angle.

  The structure of the organic EL element is based on a laminated structure of anode / organic EL layer (including an organic light emitting layer) / cathode. As an organic EL display device capable of color display, a combination of an organic EL element substrate having such an organic EL element and a color filter is known.

  The organic EL layer used in the organic EL element has low resistance to moisture, oxygen, and other gas components, and shrinkage and dark spots are generated due to the influence of these moisture, oxygen, and other gas components. Here, “shrink” refers to a phenomenon in which the non-light-emitting area expands as time passes so that the light-emitting area contracts. A dark spot refers to a non-light emitting region such as a black spot generated immediately after the production of the organic EL element. This dark spot may also expand over time. That is, the organic EL element deteriorates with time due to the presence of moisture and the like.

As a technique for preventing the moisture from entering the organic EL display device, for example, as an organic EL element manufacturing method, an insulating inorganic oxide film layer is provided on the organic EL layer, an overcoat layer and an insulating It is disclosed that an inorganic oxide film layer is provided (see, for example, Patent Document 1 and Patent Document 2). In addition, for the organic EL display device, a technique for forming a sealant on the peripheral portion of the organic EL element substrate and the color filter is proposed in order to prevent the organic EL element from coming into contact with moisture in the atmosphere. Has been.
However, it has been difficult and difficult to completely prevent the intrusion of moisture and the like in the atmosphere using only the above-described technique.
Therefore, there is a demand for a technique for preventing intrusion of moisture, oxygen, and the like in the atmosphere into the organic EL element more easily and completely by combining with the above technique.

  In general, a filler such as a curable resin or an inert gas is filled between the organic EL element substrate and the color filter (see, for example, Patent Document 3, Patent Document 4, and Patent Document 5).

JP-A-8-279394 JP 2002-318543 A JP 2009-104969 A JP 2009-134984 A JP 2005-268062 A

  In recent years, in the organic EL display device, technology for increasing the size has been developed for television applications, and problems due to the increase in size have arisen. Specifically, when the curable resin composition is sealed between the organic EL element substrate and the color filter and cured, and the curable resin is filled, the organic curable resin composition itself has no rigidity. In the manufacturing process of the display device, the substrate is bent until the curable resin composition is cured, and it is difficult to keep the distance (gap) between the substrates uniform. In addition, when filling a non-rigid material such as an inert gas or an inert liquid between the organic EL element substrate and the color filter, not only during the manufacturing process of the organic EL display device but also at the time of use, It is difficult to keep the gap uniform.

  A curable resin composition, an inert liquid, an inert gas, or the like filled between the organic EL element substrate and the color filter has a refractive index different from that of the light emitting layer and the colored layer. Therefore, the light emitted from the light emitting layer is reflected and interfered at the interlayer interface. If the gap cannot be maintained uniformly, the incident angle of the light emitted from the light emitting layer to the colored layer will be slightly different, and the degree of reflection due to the difference in refractive index will not be uniform. Further, the optical distance indicated by the product of the refractive index and the gap changes depending on the substrate position, and the degree of interference does not become uniform. Therefore, there is a problem that display unevenness occurs.

  The present invention has been made in view of the above problems, and an organic EL display device capable of preventing deterioration of an organic EL layer due to moisture and oxygen, having excellent temporal stability, and suppressing occurrence of display unevenness. The main object is to provide a color filter for an organic EL display device used therefor.

  In order to achieve the above object, the present invention provides a color filter for an organic EL display device used in an organic EL display device in which a filler is sealed between a color filter and an organic EL element substrate having an organic EL element. A transparent substrate, a colored layer formed in a pattern on the display region on the transparent substrate, and a non-pixel region of the display region on the transparent substrate, between the color filter and the organic EL element substrate. And a partition formed to surround the display region in the non-display region on the transparent substrate, and the spacer and the partition include a member made of the same material. A color filter for an organic EL display device is provided.

  When the color filter for an organic EL display device of the present invention is used in an organic EL display device in which a filler is sealed between the color filter and the organic EL element substrate, an organic EL display is formed by forming a spacer. The gap between the device color filter and the organic EL element substrate can be kept uniform, and display unevenness can be suppressed. In addition, when the color filter for an organic EL display device of the present invention is used in an organic EL display device, it can prevent intrusion of moisture, oxygen, and the like that have passed through the sealant because the partition wall is formed. It is possible to prevent deterioration of the EL layer over time. Further, in the present invention, since the spacer and the partition include members made of the same material, the member made of the same material constituting the spacer and the partition can be formed at the same time, the manufacturing process can be simplified, and the cost can be reduced. can do.

  In the said invention, when the said partition is bonded so that the said organic EL element substrate may be opposed to the said color filter for organic EL display devices, it is between the said color filter for organic EL display devices, and the said organic EL element substrate. It is preferable to have a height that can maintain hermeticity. When the color filter for an organic EL display device of the invention and the organic EL element substrate are bonded together, it is possible to effectively prevent intrusion of moisture, oxygen, etc. through the sealing agent by having a predetermined height of the partition walls. Because it can.

  In the present invention, the partition preferably has gas barrier properties. This is because the partition walls having gas barrier properties can more effectively prevent the intrusion of moisture, oxygen, and the like that have passed through the sealant.

  Furthermore, in the present invention, the partition preferably includes a partition pedestal and a partition barrier film made of an inorganic material having a gas barrier property, which is formed so as to cover the partition pedestal. This is because higher gas barrier properties can be imparted to the partition walls.

  In the above case, the spacer includes a spacer pedestal portion and a spacer barrier film made of an inorganic material having a gas barrier property, which is formed so as to cover the spacer pedestal portion. The barrier film for barrier ribs may be made of the same material. This is because a spacer barrier film and a barrier wall film made of the same material can be formed at the same time, and the manufacturing process can be simplified.

  Further, in the above case, a colored layer coating film is formed on the colored layer so as to cover the colored layer, and the colored layer coating film, the spacer barrier film, and the partition barrier film are integrated. It may be formed. By forming the colored layer coating film, degassing from the colored layer can be prevented. In addition, the colored layer coating film, the spacer barrier film, and the partition barrier film can be formed at the same time, and the manufacturing process can be simplified.

  In the present invention, the spacer includes a spacer colored laminate in which a spacer forming layer made of the same material as the colored layer is laminated, and the partition is made of the same material as the colored layer. You may have the colored laminated body for partition in which the layer for formation was laminated | stacked. This is because the formation process of the spacer and the partition can be simplified by stacking the spacer formation layer and the partition formation layer made of the same material as the colored layer.

  Further, in the present invention, a colored layer coating film is formed on the colored layer so as to cover the colored layer, and the colored layer coating film, the partition wall, and the spacer may be integrally formed. Good. By forming the colored layer coating film, degassing from the colored layer can be prevented. Further, the colored layer coating film, the spacer, and the partition can be formed at the same time, and the manufacturing process can be simplified.

  In the present invention, a plurality of the partition walls may be formed in the non-display area. This is because a higher gas barrier property can be realized by forming a plurality of partition walls.

  The present invention also provides the above-described color filter for an organic EL display device, an organic EL element substrate having an organic EL element, a filler encapsulated between the color filter for the organic EL display device and the organic EL element substrate, An organic EL display device is provided.

  According to the present invention, it is possible to suppress the occurrence of display unevenness by using the above-described color filter for an organic EL display device. In addition, according to the present invention, by using the above-described color filter for organic EL display devices, it is possible to suppress deterioration of the organic EL layer due to moisture, oxygen, etc., and to improve stability over time. Furthermore, an inexpensive organic EL display device can be obtained.

  Furthermore, the present invention is used for an organic EL display device in which a filler is sealed between a color filter and an organic EL element substrate having an organic EL element. The transparent substrate and a display region on the transparent substrate are used. A colored layer formed in a pattern, a spacer formed in a non-pixel area of the display area on the transparent substrate, and a spacer for maintaining a gap between the color filter and the organic EL element substrate, and on the transparent substrate A method of manufacturing a color filter for an organic EL display device having a non-display region having a partition formed so as to surround the display region, wherein the spacer and the partition are the same And a member made of the same material forming the spacer and the partition wall at the same time. To provide a method for manufacturing a color filter for a display device.

  According to the present invention, since the members made of the same material constituting the spacer and the partition are formed at the same time, the manufacturing process can be simplified and the cost can be reduced.

  In the present invention, the spacer includes a spacer base and a spacer barrier film made of an inorganic material having a gas barrier property so as to cover the spacer base, and the partition includes the partition And a partition barrier film made of an inorganic material having a gas barrier property so as to cover the partition pedestal, and the spacer barrier film and the partition wall made of the same material. A barrier film may be formed simultaneously. This is because the manufacturing process can be simplified and the cost can be reduced.

  In the above case, the spacer barrier film made of the same material, the barrier barrier film, and the colored layer coating film formed on the colored layer so as to cover the colored layer may be formed simultaneously. This is because the manufacturing process can be simplified and the cost can be reduced.

  In the present invention, the spacer includes a spacer colored laminate in which a spacer forming layer made of the same material as the colored layer is laminated, and the partition is made of the same material as the colored layer. It may have a colored laminated body for barrier ribs in which a forming layer is laminated, and the spacer forming layer and the barrier rib forming layer may be formed simultaneously with the colored layer. This is because the manufacturing process can be simplified and the cost can be reduced.

  Furthermore, in the present invention, the spacer made of the same material, the partition, and a colored layer coating film formed on the colored layer so as to cover the colored layer may be formed simultaneously. This is because the manufacturing process can be simplified and the cost can be reduced.

  When the color filter for organic EL display devices of the present invention is used in an organic EL display device by forming a spacer, the gap between the color filter for organic EL display devices and the organic EL element substrate is reduced. It is possible to hold it uniformly, and there is an effect that the occurrence of display unevenness can be suppressed. Moreover, the color filter for organic EL display devices of the present invention can prevent deterioration of the organic EL layer due to moisture or oxygen when used in the organic EL display device because the partition walls are formed. There is an effect that an organic EL display device excellent in stability can be obtained. Furthermore, since the spacer and the partition include members made of the same material, the member made of the same material constituting the spacer and the partition can be formed at the same time, the manufacturing process can be simplified, and an inexpensive organic EL display device There is an effect that the color filter can be used.

It is a schematic diagram which shows an example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows an example of the organic electroluminescent display apparatus of this invention. It is a schematic sectional drawing which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic diagram which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows the other example of the color filter for organic EL display apparatuses of this invention. It is a schematic sectional drawing which shows the other example of the organic electroluminescent display apparatus of this invention. It is process drawing which shows an example of the manufacturing method of the color filter for organic EL display apparatuses of this invention. It is process drawing which shows the other example of the manufacturing method of the color filter for organic electroluminescent display apparatuses of this invention. It is process drawing which shows the other example of the manufacturing method of the color filter for organic electroluminescent display apparatuses of this invention. It is a schematic plan view which shows an example of the light-shielding part in the color filter for organic EL display devices of this invention, and the light-shielding part for partition.

  Hereinafter, the color filter for organic EL display devices, the organic EL display device, and the method for producing the color filter for organic EL display devices of the present invention will be described in detail.

A. First, the color filter for organic EL display devices of the present invention will be described.
The color filter for an organic EL display device of the present invention is a color filter for an organic EL display device used for an organic EL display device in which a filler is sealed between the color filter and an organic EL element substrate having an organic EL element. A transparent substrate, a colored layer formed in a pattern on the display region on the transparent substrate, and a non-pixel region of the display region on the transparent substrate, between the color filter and the organic EL element substrate. And a partition formed to surround the display region in the non-display region on the transparent substrate, and the spacer and the partition include a member made of the same material. It is characterized by.

The color filter for organic EL display devices of the present invention will be described with reference to the drawings.
1A and 1B are a schematic cross-sectional view and a plan view, respectively, showing an example of a color filter for an organic EL display device of the present invention, and FIG. 1A is a cross-sectional view taken along line AA in FIG. It is line sectional drawing. As illustrated in FIGS. 1A and 1B, the color filter 1 for an organic EL display device includes a transparent substrate 2, a light shielding portion 3 formed in a pattern on the display region 11 on the transparent substrate 2, and The colored layer 4 (4R, 4G, and 4B in FIGS. 1A and 1B) formed in the opening of the light shielding portion 3 of the display area 11 on the transparent substrate 2 and the display area 11 on the transparent substrate 2 The spacer 5 is formed on the light shielding portion 3, and the partition wall 6 is formed in the non-display region 12 on the transparent substrate 2 so as to surround the display region 11. When the spacer 5 is used in an organic EL display device in which a filler is enclosed between the color filter and the organic EL element substrate, the color filter for the organic EL display device of the present invention is used. Is provided to maintain a gap between. The spacer 5 and the partition wall 6 are made of the same material. Further, the partition wall 6 is high enough to maintain airtightness between the organic EL display device color filter and the organic EL element substrate when the organic EL element substrate is bonded to the organic EL display device color filter. It is preferable to have gas barrier properties.

  2 (a) and 2 (b) show an organic EL display device color filter exemplified in FIGS. 1 (a) and 1 (b), in which a filler is sealed between the color filter and the organic EL element substrate. It is a schematic sectional drawing which shows an example at the time of using for EL display apparatus. The color filter 1 for an organic EL display device illustrated in FIG. 2A is the same as the above-described FIGS. 1A and 1B. On the other hand, the organic EL element substrate 20 illustrated in FIG. 2A includes a substrate 21, a back electrode layer 22 formed in a pattern on the substrate 21, and an insulating layer 23 formed in an opening of the back electrode layer 22. The organic EL element 26 having the organic EL layer 24 formed on the back electrode layer 22 and including at least the organic light emitting layer, and the transparent electrode layer 25 formed on the organic EL layer 24, and the organic EL element 26 are covered. And a gas barrier layer 27 formed on the substrate. As illustrated in FIG. 2B, in the organic EL display device 30, filling is performed between the organic EL display device color filter 1 illustrated in FIG. 2A and the organic EL element substrate 20. A material 31 is enclosed, a sealing agent 32 is formed on the outer periphery of the partition wall 6, and the color filter 1 for organic EL display device and the organic EL element substrate 20 are bonded. At this time, as shown in FIGS. 2A and 2B, the color filter 1 for the organic EL display device and the organic EL element substrate 20 are attached so that the partition wall 6 is in contact with the substrate 21 of the organic EL element substrate 20. Combined.

  In such an organic EL display device, the gap between the organic EL display device color filter and the organic EL element substrate is uniformly maintained by forming a spacer in the organic EL display device color filter. Can do. Therefore, for example, when the filler is a curable resin, the substrate bends until the curable resin composition is sealed between the color filter for the organic EL display device and the organic EL element substrate and cured. And the gap can be kept uniform. If the gap becomes non-uniform before the curable resin composition is cured, the gap is fixed after the curable resin composition is cured, so that an organic EL display device with a non-uniform gap is obtained. This becomes more prominent as the organic EL display device has a larger area. On the other hand, when the filler does not have rigidity such as inert gas or inert liquid, the gap can be kept uniform not only during the manufacturing process of the organic EL display device but also during use. . Therefore, by using the color filter for an organic EL display device of the present invention, it is possible to suppress the occurrence of display unevenness.

  Further, according to the present invention, since the partition walls are formed, infiltration of moisture, oxygen, etc. can be prevented when the color filter for organic EL display device of the present invention and the organic EL element substrate are bonded together. Therefore, it is possible to suppress the deterioration of the organic EL layer due to moisture and oxygen. Thereby, deterioration with time of the organic EL layer can be prevented.

  Furthermore, since the spacer is formed, when the color filter for an organic EL display device of the present invention is used in an organic EL display device, the strength can be increased.

In the present invention, the spacer and the partition include members made of the same material.
As illustrated in FIG. 1A described above, the spacer 5 and the partition wall 6 are each composed of a single member, and may be made of the same material. In this case, the spacer and the partition can be formed simultaneously.
As illustrated in FIG. 3A, the spacer 5 is composed of a single member, the partition wall 6 has a partition wall pedestal portion 6c and a partition wall barrier film 6d, and the partition wall pedestal portion 6c is a single member. The spacer 5 and the partition base 6c may be made of the same material. In this case, the spacer and the partition pedestal can be formed simultaneously.
As illustrated in FIG. 4A, the spacer 5 has a spacer pedestal 5c and a spacer barrier film 5d, the partition 6 has a partition pedestal 6c and a partition barrier film 6d, and the spacer pedestal. The portion 5c and the partition pedestal 6c are each formed of a single member, and the spacer pedestal 5c and the partition pedestal 6c are made of the same material, and the spacer barrier film 5d and the partition barrier film 6d And may be made of the same material. In this case, the spacer pedestal and the partition pedestal can be formed simultaneously, and the spacer barrier film and the partition barrier film can be formed simultaneously.

Further, as illustrated in FIG. 5, the spacer 5 includes a spacer colored laminate 5S in which spacer forming layers 5R, 5G, and 5B made of the same material as the colored layer are laminated, and the partition 6 is a light shielding for the partition. The barrier layer forming layers 6R, 6G, and 6B made of the same material as the portion 13 and the coloring layer are stacked, and the spacer forming layers 5R, 5G, and 5B and the partition forming layers are formed. The layers 6R, 6G, and 6B may be made of the same material. In this case, the spacer colored laminate, the partition colored laminate and the colored layer can be formed simultaneously.
As illustrated in FIG. 3B, the spacer 5 includes a spacer colored laminate 5S in which spacer forming layers 5R, 5G, and 5B made of the same material as the colored layer are laminated, and the partition 6 is used for the partition. The barrier rib film 6d having a pedestal portion 6c, and the barrier rib pedestal portion 6c is formed of barrier rib forming layers 6R, 6G, and 6B made of the same material as the barrier rib light shielding portion 13 and the colored layer. The spacer forming layers 5R, 5G, and 5B and the partition forming layers 6R, 6G, and 6B may be made of the same material. Also in this case, the spacer colored laminate, the partition colored laminate and the colored layer can be formed simultaneously.
As illustrated in FIG. 4B, the spacer 5 includes a spacer pedestal 5c and a spacer barrier film 5d, and the spacer pedestal 5c is made of the same material as the colored layer. , 5B are stacked, the partition wall 6 includes the partition wall pedestal portion 6c and the partition wall barrier film 6d, and the partition wall pedestal portion 6c is the same as the partition light shielding portion 13 and the colored layer. The barrier rib forming layers 6R, 6G, 6B made of the above materials are stacked, and the spacer forming layers 5R, 5G, 5B and the barrier rib forming layers 6R, 6G, 6B are provided. May be made of the same material, and the spacer barrier film 5d and the barrier wall film 6d may be made of the same material. In this case, the spacer colored laminate, the partition colored laminate and the colored layer can be formed simultaneously, and the spacer barrier film and the barrier barrier film can be formed simultaneously.

  According to the present invention, since the spacer and the partition include the members made of the same material, the members made of the same material constituting the spacer and the partition can be simultaneously formed, and the manufacturing process can be simplified. It is possible to reduce costs.

  Hereinafter, each structure in the color filter for organic EL display devices of this invention is demonstrated.

1. Partition Wall The partition wall used in the present invention is formed so as to surround the display area in the non-display area on the transparent substrate. Moreover, the partition and the spacer include members made of the same material.

  The partition wall is high enough to maintain the airtightness between the color filter for organic EL display device and the organic EL element substrate when the organic EL element substrate is bonded to the color filter for organic EL display device of the present invention. It is preferable to have. This is because when the color filter for an organic EL display device of the present invention and the organic EL element substrate are bonded together, the entry of moisture, oxygen and the like that has passed through the sealing agent can be further prevented by the partition walls.

  The height of the partition is not particularly limited as long as the color filter for the organic EL display device of the present invention is bonded to the organic EL element substrate so as to maintain airtightness. Usually, the height of the partition is equal to or larger than the distance between the transparent substrate of the color filter for an organic EL display device and the substrate of the organic EL element substrate (hereinafter sometimes referred to as an inter-substrate distance). . In the present invention, pressure is applied when the organic EL display device color filter and the organic EL element substrate are bonded together, and the partition wall is pressure-bonded to the organic EL element substrate to maintain airtightness. This is because airtightness cannot be maintained when the height is low.

The difference between the height of the partition wall and the distance between the substrates (height of the partition wall−the distance between the substrates) is preferably in the range of 0 μm to 10 μm, more preferably in the range of 0 μm to 8 μm, particularly in the range of 0 μm to 5 μm. It is preferable that
Further, the height of the partition wall is appropriately adjusted depending on the type of the color filter for the organic EL display device, but is preferably in the range of 1 μm to 15 μm, and more preferably in the range of 3 μm to 10 μm, particularly 5 μm. It is preferable to be within a range of ˜8 μm. When the height of the partition wall is less than the above range, it is difficult to maintain airtightness between the color filter for the organic EL display device and the organic EL element substrate. When the height of the partition wall exceeds the above range, the pressure is reduced. This is because the distance is larger than the distance between the substrates.

  Furthermore, the partition preferably has gas barrier properties. This is because when the color filter for an organic EL display device of the present invention and the organic EL element substrate are bonded together, the entry of moisture, oxygen, etc. that has passed through the sealing agent can be effectively prevented by the partition walls.

  When the color filter for organic EL display device of the present invention and the organic EL element substrate are bonded together, the partition wall 6 is usually a substrate of the organic EL element substrate 20 as illustrated in FIGS. 2 (a) and 2 (b). The color filter 1 for an organic EL display device and the organic EL element substrate 20 are bonded so as to be in contact with 21.

As the partition, a partition including a member made of the same material and a spacer can be formed. The partition is not particularly limited as long as it has a predetermined height and has a gas barrier property. For example, as shown in FIGS. 1A and 5, the partition wall 6 may be made of only a material having a gas barrier property (hereinafter, referred to as a first mode), and FIGS. As illustrated in FIG. 4B and FIGS. 4A and 4B, the partition wall 6 is formed so as to cover the partition wall pedestal portion 6c and the partition wall pedestal portion 6c, and is made of an inorganic material having a gas barrier property. It may have a barrier film 6d (hereinafter referred to as a second mode).
Each aspect will be described below.

(1) 1st aspect The partition of this aspect consists only of material which has gas barrier property.

The partition wall is not particularly limited as long as it can form a partition wall and a spacer including members made of the same material and is made only of a material having a gas barrier property, and is exemplified in FIG. Thus, the partition wall 6 may be composed of a single member, and as illustrated in FIG. 5, the partition wall 6 is made of the same material as the partition light-shielding portion 13 and the colored layer, and the partition wall forming layers 6R, 6G, 6B. It may have the coloring laminated body 6S for barrier ribs laminated.
In the example shown in FIG. 1A, the partition wall 6 and the spacer 5 are each composed of a single member and are made of the same material. On the other hand, in the example shown in FIG. 5, the partition wall 6 includes the partition wall light-shielding portion 13 and the partition wall colored laminate 6S in which the partition wall forming layers 6R, 6G, and 6B made of the same material as the colored layer are stacked. The spacer 5 has a spacer colored layered body 5S in which spacer forming layers 5R, 5G, and 5B made of the same material as the colored layer are stacked, and the partition wall forming layers 6R, 6G, and 6B and the spacer forming layer are formed. The layers 5R, 5G, and 5B are made of the same material.

  In the case where the partition includes the partition light-shielding portion and the partition wall colored laminate, the partition and the spacer can be formed simultaneously with the formation of the light-shielding portion and the colored layer. An example of a method for forming the partition walls and spacers in this case will be described with reference to FIG. First, the light shielding part 3 and the partition light shielding part 13 are simultaneously formed on the transparent substrate 2. Next, using the red colored layer forming coating liquid for forming the red colored layer, the red colored layer 4R is formed in the opening of the light shielding portion 3, the partition forming layer 6R is formed on the partition light shielding portion 13, and the light shielding portion. A spacer forming layer 5R is formed on the substrate 3 at the same time. Next, using the green colored layer forming coating liquid for forming the green colored layer, the green colored layer 4G is formed in the opening of the light shielding portion 3, the partition forming layer 6G is formed on the partition forming layer 6R, and the spacer forming layer is formed. Spacer forming layers 5G are simultaneously formed on the layer 5R. Subsequently, using the blue colored layer forming coating liquid for forming the blue colored layer, the blue colored layer 4B is formed in the opening of the light shielding portion 3, the partition forming layer 6B is formed on the partition forming layer 6G, and the spacer is formed. Spacer forming layers 5B are simultaneously formed on the working layer 5G. In this way, when forming the colored layer, the partition wall forming layer is stacked on the partition light shielding portion, and the spacer forming layer is stacked on the light shielding portion, whereby the partition wall and the spacer can be formed simultaneously. . By stacking a partition formation layer and a spacer formation layer made of the same material as the coloring layer, the partition and spacer formation process can be simplified and the cost can be reduced.

  When the partition has a colored laminate for the partition, the partition may have only the colored laminate for the partition, or may have the light shielding part for the partition and the colored laminate for the partition as described above. . When the partition has a partition light-shielding portion and a partition colored laminate, the thickness of the partition forming layer formed on the partition light-shielding portion can be controlled by the width of the partition light-shielding portion. Since the height of the partition wall can be controlled, a desired height can be easily obtained.

  The number of the partition forming layers is preferably in the range of 1 to 4 layers, more preferably in the range of 2 to 4 layers, and particularly preferably in the range of 2 to 3 layers. If the number of stacked layers is less than the above range, it is difficult to form the pedestal at a desired height. If the number of stacked layers exceeds the above range, the step of stacking the partition wall forming layers becomes complicated. .

The material used for the partition is not particularly limited as long as it can form a partition including a member made of the same material and a spacer, has a gas barrier property, and can form a desired partition. It is appropriately selected according to the configuration.
For example, when the partition wall is composed of a single member, the partition wall material may be polyvinyl alcohol, polyvinylidene chloride, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, polystyrene, polypropylene, polyacrylonitrile, polyimide, polyamide, polychlorinated. Organic materials such as vinyl are used. An organic-inorganic hybrid material in which silica, which is an inorganic material, is added to an organic material such as an acrylic resin, an epoxy resin, a polyurethane resin, a polyimide resin, a polyamideimide resin, or a polyvinyl alcohol resin is also preferably used.
On the other hand, in the case where the partition has a partition light-shielding portion and a partition-layer colored laminate in which partition-forming layers made of the same material as the colored layer are stacked, the material for the partition-forming layer may be the organic material described above Alternatively, a material obtained by adding a colorant or the like to an organic-inorganic hybrid material can be used. Moreover, as a material of the light shielding part for a partition, what added the black coloring agent etc. to the above-mentioned organic material or organic-inorganic hybrid material can be used.

  Further, as illustrated in FIG. 6, the partition walls 6, the spacers 5, and the colored layer coating film 7 may be integrally formed. The colored layer coating film is formed on the entire surface of the colored layer in order to prevent the organic EL element from deteriorating due to degassing from the colored layer, and has a gas barrier property. By integrally forming the partition wall, the spacer, and the colored layer coating film, it is not necessary to separately form the colored layer coating film, and the manufacturing process can be simplified.

  When the partition wall, the spacer, and the colored layer coating film are integrally formed, the material used for the partition wall can be formed integrally with the partition wall, the spacer, and the colored layer coating film, and There is no particular limitation as long as it has transparency and gas barrier properties. As such a material, the above-described organic material or organic-inorganic hybrid material can be used.

  The line width of the partition wall is not particularly limited as long as the line width is airtight when the color filter for an organic EL display device of the present invention is bonded to the organic EL element substrate. It is preferably in the range of 5 μm to 500 μm, in particular in the range of 10 μm to 400 μm, particularly in the range of 30 μm to 300 μm. When the line width of the partition wall is less than the above range, it may be difficult to maintain airtightness even when the color filter for an organic EL display device of the present invention is pressure-bonded to the organic EL element substrate. This is because if the width exceeds the above range, a partition wall may be formed in the display area.

  The cross-sectional shape of the partition wall is not particularly limited as long as it is a shape that can maintain airtightness when the color filter for an organic EL display device of the present invention is used in an organic EL display device. It can be.

  A partition formation position is not particularly limited as long as it is a non-display region.

In this embodiment, as illustrated in FIGS. 7A and 7B, a plurality of partition walls 6 (two in FIGS. 7A and 7B) may be formed. It is because it can have higher gas barrier property by the plurality of partition walls being formed. FIG. 7A is a cross-sectional view taken along the line BB in FIG.
In the case where a plurality of partition walls are formed, the number of partition walls is preferably in the range of 2 to 10, more preferably 2. When the number of the partition walls exceeds the above range, the partition walls may be formed in the display area.

  An adhesive layer may be provided on the upper surface of the partition wall. This is because the color filter for an organic EL display device and the organic EL element substrate can be fixed. Moreover, it is because airtightness can be improved.

  The method for forming the partition wall according to this aspect is not particularly limited as long as a desired partition wall can be formed, and is appropriately selected according to the configuration of the partition wall. When the partition is formed of a single member, examples of the method for forming the partition include a photolithography method and a printing method. In addition, when the partition wall includes a partition light-shielding portion and a partition wall colored laminated body in which partition wall forming layers of the same material as the colored layer are stacked, a method for forming the partition wall forming layer includes a photolithography method, The printing method etc. are mentioned. In this case, the method for forming the light shielding part for the partition can be the same as the general method for forming the light shielding part. Furthermore, when the partition, the spacer, and the colored layer coating film are integrally formed, examples of the method for forming the partition, the spacer, and the colored layer coating film include a photolithography method using a gradation mask. .

(2) 2nd aspect The partition of this aspect has the base part for partition, and the barrier film which is formed so that the base part for partition may be covered, and consists of an inorganic material which has gas barrier property. The partition of this aspect can have higher gas barrier properties because the partition base is covered with the partition barrier film.

The partition wall is not particularly limited as long as it can form a partition wall and a spacer including a member made of the same material and has a partition base portion and a partition barrier film.
In the example shown in FIG. 3A, the partition pedestal 6c and the spacer 5 are made of a single member and are made of the same material. In the example shown in FIG. 4A, the spacer 5 has a spacer pedestal 5c and a spacer barrier 5d, and the partition pedestal 6c and the spacer pedestal 5c are formed of a single member. The partition pedestal 6c and the spacer pedestal 5c are made of the same material, and the partition barrier film 6d and the spacer barrier film 5d are made of the same material.
On the other hand, in the example shown in FIG. 3B, the partition pedestal portion 6c is formed by partition wall forming layers 6R, 6G, and 6B formed of the same material as the partition light shielding portion 13 and the colored layer. A spacer colored layered body 5S in which the spacer 5 is made of the same material as that of the colored layer, and the spacer forming layers 5R, 5G, and 5B are laminated. 6B and the spacer forming layers 5R, 5G, 5B are made of the same material. Further, in the example shown in FIG. 4B, the partition pedestal 6c is formed by partition wall forming layers 6R, 6G, and 6B made of the same material as the partition light shielding portion 13 and the colored layer. The spacer 5 has a spacer pedestal 5c and a spacer barrier 5d, and the spacer pedestal 5c is laminated with spacer forming layers 5R, 5G, and 5B made of the same material as the colored layer. In addition, the spacer forming layers 6R, 6G, and 6B and the spacer forming layers 5R, 5G, and 5B are made of the same material, and the barrier barrier film 6d and the spacer barrier are formed. The film 5d is made of the same material.
Hereinafter, the pedestal for partition and the barrier film for partition will be described.

(I) Bulkhead pedestal The bulkhead pedestal used for the bulkhead of this embodiment is formed on a transparent substrate.

  As illustrated in FIGS. 3A and 4A, the partition base 6c may be configured by a single member, as illustrated in FIGS. 3A and 4A. As illustrated in b), the partition pedestal 6c includes the partition light-shielding portion 13 and the partition-forming colored laminate 6S in which partition-forming layers 6R, 6G, and 6B made of the same material as the colored layer are stacked. You may do it.

  In the case where the partition base has the partition light-shielding portion and the partition wall colored laminate in which the partition forming layer made of the same material as the colored layer is laminated, the partition wall is simultaneously formed when the light-shielding portion and the colored layer are formed. A pedestal portion and a spacer or a spacer pedestal portion can be formed. In this case, the method for forming the partition base and the spacer or spacer base can be the same as the method for forming the partition and spacer in the first aspect. Also, the number of the barrier rib forming layers can be the same as that of the barrier rib of the first aspect.

  In the case where the partition pedestal has the partition colored laminate, the partition pedestal may have only the partition colored laminate, and the partition light shielding part and the partition colored laminate as described above. You may have. In the case where the partition base has only the partition colored layered body, the thickness of the upper partition forming layer formed on the lower partition forming layer is controlled by the width of the lower partition forming layer. And thereby the height of the partition pedestal can be controlled. On the other hand, when the partition pedestal has a partition light-shielding part and a partition colored laminate, an upper partition formed on the lower partition-forming layer is formed depending on the width of the lower partition-forming layer. In addition to controlling the thickness of the barrier layer, the thickness of the barrier rib forming layer formed on the barrier rib light shielding portion can be controlled by the width of the barrier rib light shielding portion, thereby controlling the height of the barrier rib pedestal portion. Therefore, the desired height can be easily obtained.

  The material used for the partition pedestal is not particularly limited as long as a partition and a spacer including members made of the same material can be formed, and a desired partition pedestal can be formed. It selects suitably according to the structure of a pedestal part. The material used for the partition pedestal may have gas barrier properties or may not have gas barrier properties.

For example, when the partition pedestal is composed of a single member, the material having gas barrier properties used for the partition pedestal includes polyvinyl alcohol, polyvinylidene chloride, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, polystyrene, Examples thereof include organic materials such as polypropylene, polyacrylonitrile, polyimide, polyamide, and polyvinyl chloride. In addition, an organic-inorganic hybrid material in which silica, which is an inorganic material, is added to an organic material such as an acrylic resin, an epoxy resin, a polyurethane resin, a polyimide resin, a polyamideimide resin, or a polyvinyl alcohol resin is also preferably used.
In this case, examples of the material having no gas barrier property used for the partition pedestal include photosensitive acrylic resin, photosensitive polyimide, positive resist, cardo resin, polysiloxane, and benzocyclobutene.

  On the other hand, when the partition pedestal portion includes the partition light-shielding portion and the partition wall colored laminated body in which the partition wall forming layer made of the same material as the colored layer is stacked, the material for the partition wall forming layer is as described above. A material added with a colorant or the like can be used. Moreover, as a material of the light shielding part for a partition, what added the black coloring agent etc. to the above-mentioned material can be used.

  In addition, as illustrated in FIG. 8B, the partition pedestal 6c, the spacer pedestal 5c, and the colored layer coating film first layer 7a may be integrally formed. By integrally forming the partition pedestal, the spacer pedestal, and the colored layer coating film first layer, the manufacturing process can be simplified.

  When the partition pedestal, the spacer pedestal, and the coloring layer coating film first layer are integrally formed, the material used for the partition pedestal is colored with the partition pedestal and the spacer pedestal. The layer coating film first layer is not particularly limited as long as it can be integrally formed and has transparency and gas barrier properties. As such a material, the above-mentioned material having gas barrier properties can be used.

Moreover, the base part for partition may have light-shielding property. This is because the partition pedestal portion has a light shielding property, so that it can have a function as a peripheral light shielding portion that demarcates the display area and the non-display area.
In addition, also when the pedestal part for a partition has the light shielding part for a partition and the colored laminated body for a partition, it has a function as a peripheral light shielding part.

The height of the partition pedestal may be a height that is the same as the height of the partition described above when a partition barrier film described later is formed on the partition pedestal.
The line width and cross-sectional shape of the partition pedestal are the same as the line width and cross-sectional shape of the partition in the first aspect when a barrier film for a partition described later is formed on the partition pedestal. Any line width and cross-sectional shape may be used.

  The method for forming the partition pedestal is not particularly limited as long as a desired partition pedestal can be formed, and is appropriately selected depending on the configuration of the partition pedestal. When the partition pedestal is composed of a single member, examples of the method for forming the partition pedestal include a photolithography method and a printing method. In addition, when the partition pedestal includes the partition light-shielding portion and the partition colored layered body in which the partition forming layers made of the same material as the colored layer are stacked, a method for forming the partition forming layer includes photo A lithography method, a printing method, etc. are mentioned. In this case, the method for forming the light shielding part for the partition can be the same as the general method for forming the light shielding part. Further, when the partition base, the spacer base, and the colored layer coating film first layer are integrally formed, the partition base, the spacer base, and the colored layer coating film first layer are formed. Examples of the method include a photolithography method using a gradation mask.

(Ii) Barrier barrier film The barrier barrier film used for the barrier ribs of this embodiment is formed so as to cover the partition base, and is made of an inorganic material having gas barrier properties.

  The material used for the barrier film for a partition is not particularly limited as long as it is an inorganic material having gas barrier properties. As such a barrier film for a partition wall, a combination of one or more of an inorganic oxide film, an inorganic oxynitride film, an inorganic nitride film, and a metal film can be usually used. Examples of the inorganic oxide film include a silicon oxide film, an aluminum oxide film, a magnesium oxide film, a titanium oxide film, a tin oxide film, and an indium oxide alloy film. Examples of the inorganic oxynitride film include a silicon oxynitride film, and examples of the inorganic nitride film include a silicon nitride film, an aluminum nitride film, and a titanium nitride film. Furthermore, examples of the metal film include an aluminum film, a silver film, a tin film, a chromium film, a nickel film, and a titanium film. Among these, a silicon oxide film or a silicon oxynitride film is preferable. This is because these have good adhesion.

  Further, as illustrated in FIG. 8A, the barrier wall film 6d for the partition wall, the barrier film 5d for the spacer, and the coloring layer coating film 7 may be integrally formed, and is illustrated in FIG. 8B. As described above, the barrier barrier film 6d, the spacer barrier film 5d, and the colored layer coating film second layer 7b may be integrally formed. By integrally forming the barrier barrier film, the spacer barrier film, and the colored layer coating film or the second colored layer coating film, the manufacturing process can be simplified.

  When the barrier barrier film, the spacer barrier film, and the colored layer coating film or the second layer of the colored layer coating film are integrally formed, the material used for the barrier film for the partition includes gas barrier properties and transparency. If it has, it will not specifically limit. Such a barrier film for a partition can be the same as the barrier film for a partition described above. Among these, an inorganic oxide film, an inorganic oxynitride film, and an inorganic nitride film are preferable. This is because transparency can be secured even when the barrier film for the partition wall is relatively thick.

The film thickness of the barrier film for the partition is not particularly limited as long as the formed partition has gas barrier properties, but it is within the range of 20 nm to 10000 nm, especially within the range of 50 nm to 8000 nm, particularly 100 nm to 5000 nm. It is preferable to be within the range. If the barrier barrier film thickness is less than the above range, it may not be possible to provide sufficient gas barrier properties to the partition wall, and if the barrier barrier film thickness exceeds the above range, it takes too much time to form the film. This is because there is a problem in terms of cost, or when the color filter for organic EL display device of the present invention and the organic EL element substrate are bonded together, the barrier film for partition walls is cracked.
When the barrier barrier film, the spacer barrier film, and the colored layer coating film or the colored layer coating film second layer are integrally formed, the barrier film for the partition wall has a gas barrier property. In addition, it is appropriately selected depending on the type of material within the above range so as to have transparency.

  Examples of the barrier film forming method include a chemical vapor deposition (CVD) method, a sputtering method, an ion plating method, an electron beam (EB) vapor deposition method, a resistance heating method, and a vacuum vapor deposition method, a laser ablation method, and the like. Can be mentioned. Among these, considering the productivity of the color filter for organic EL display devices, the sputtering method, the ion plating method, and the CVD method are preferable, and the sputtering method is more preferable. This is because a barrier film having high productivity and excellent quality stability can be formed by using the sputtering method. Further, examples of the patterning method for the barrier film for barrier ribs include a photoetching method and a method using a metal mask.

(Iii) Partition Wall The partition wall of this embodiment has the above-described partition base portion and partition wall barrier film.

The line width, cross-sectional shape and the like of the partition walls can be the same as the line width and cross-sectional shape of the partition walls of the first aspect.
Further, the formation position of the partition wall is not particularly limited as long as it is a non-display area.

As illustrated in FIG. 8A, the partition wall of this aspect is formed on the partition base portion 6c, the spacer base portion 5c, and the entire surface of the coloring layer 4, and the barrier barrier film 6d and the spacer barrier film 5d. And the colored layer coating film 7 covering the colored layer 4 may be integrally formed. Since the barrier barrier film, the spacer barrier film, and the colored layer coating film can be formed at the same time, the manufacturing process can be simplified.
In addition, as illustrated in FIG. 8B, the partition wall of this embodiment includes a partition wall 6 having a partition base portion 6c and a partition barrier film 6d, and a spacer having a spacer base portion 5c and a spacer barrier film 5d. 5 and the colored layer coating film 7 covering the entire surface of the colored layer 4 may be integrally formed. In this case, the colored layer coating film 7 is formed on the entire surface of the colored layer 4, and the colored layer coating film first layer 7a made of the same material as the partition base part 6c and the spacer base part 5c, and the colored layer It has a colored layer coating film second layer 7b formed on the first coating film layer 7a and made of the same material as the barrier film 6d for barrier ribs and the barrier film 5d for spacers. The partition pedestal 6c, the spacer pedestal 5c, and the colored layer coating film first layer 7a are integrally formed, and the partition barrier film 6d, the spacer barrier film 5d, and the colored layer coating film second layer 7b Are integrally formed. The partition pedestal, the spacer pedestal, and the colored layer coating film first layer are formed simultaneously, and the partition barrier film, the spacer barrier film, and the colored layer coating film second layer are formed simultaneously. Therefore, the manufacturing process can be simplified.

In this embodiment, as illustrated in FIG. 9, a plurality (two in FIG. 9) of partition walls 6 may be formed. It is because it can have higher gas barrier property by forming a plurality of partition walls.
Note that the number of partition walls is the same as that in the first embodiment, and thus the description thereof is omitted here.

2. Spacer The spacer used in the present invention is formed in the non-pixel region of the display region on the transparent substrate, and the color filter for the organic EL display device of the present invention is interposed between the color filter and the organic EL element substrate. When used in an organic EL display device in which a filler is enclosed, it is provided to maintain a gap between the color filter and the organic EL element substrate. The spacer and the partition include members made of the same material.

  The spacer is not particularly limited as long as it can hold a gap between the color filter and the organic EL element substrate and can form a spacer including a member made of the same material and a partition wall. As illustrated in FIG. 3A and FIG. 3A, the spacer 5 may be composed of a single member, and as illustrated in FIG. 3B and FIG. 4R, 4G, 4B may have a spacer colored laminated body 5S in which spacer forming layers 5R, 5G, 5B made of the same material as each other are laminated, and are exemplified in FIGS. 4 (a) and 4 (b). As described above, the spacer 5 may include a spacer pedestal 5c and a spacer barrier film 5d formed of an inorganic material having a gas barrier property, so as to cover the spacer pedestal 5c.

  As illustrated in FIG. 3B and FIG. 5, when the spacer 5 has the spacer colored layered body 5S in which the spacer forming layers 5R, 5G, and 5B made of the same material as the colored layer are stacked, As described above, the colored laminated body for spacers and the colored laminated body for partition walls can be formed simultaneously with the formation of the colored layer. By stacking the spacer forming layer and the partition forming layer made of the same material as the colored layer, the process of forming the spacer and the partition or the partition pedestal can be simplified, and the cost can be reduced.

  In addition, as illustrated in FIG. 4B, the spacer 5 includes a spacer pedestal 5c and a spacer barrier film 5d, and the spacer pedestal 5c is made of the same material as the colored layer. Even in the case of having the spacer colored laminate 5S in which the formation layers 5R, 5G, and 5B are laminated, the spacer colored laminate and the partition colored laminate can be formed simultaneously with the formation of the colored layer. Similar to the above case, by stacking the spacer forming layer and the partition forming layer made of the same material as the colored layer, the formation process of the spacer base and the partition base can be simplified and the cost can be reduced. Is possible.

  At this time, the number of spacer forming layers is preferably in the range of 1 to 4 layers, more preferably in the range of 2 to 4 layers, and particularly in the range of 2 to 3 layers. This is because when the number of stacked layers is less than the above range, it is difficult to form the spacers at a desired height, and when the number of stacked layers exceeds the above range, the step of stacking the spacer forming layers becomes complicated.

The material used for the spacer is not particularly limited as long as it can hold the gap between the color filter and the organic EL element substrate and can form a spacer and a partition including members made of the same material. Instead, it is appropriately selected according to the configuration of the spacer.
Note that the material used for the spacer is the same as the material used for the partition wall, and a description thereof is omitted here.

In addition, the spacer 5, the partition wall 6, and the colored layer coating film 7 may be integrally formed as illustrated in FIG. 6, and the spacer for the spacer 5 as illustrated in FIG. The barrier film 5d, the barrier film 6d for the partition wall 6 and the colored layer coating film 7 may be integrally formed. As illustrated in FIG. 8B, the spacer base portion 5c of the spacer 5 and the partition wall The partition wall pedestal 6c and the colored layer coating film first layer 7a are integrally formed, and the spacer barrier film 5 of the spacer 5, the partition wall barrier film 6d of the partition wall 6, and the colored layer coating film second layer. 7b may be integrally formed. In such a case, it is not necessary to separately form a colored layer coating film, and the manufacturing process can be simplified.
In addition, since it described in detail in the term of the said partition about the above cases, description here is abbreviate | omitted.

  The height of the spacer is not particularly limited as long as the gap between the color filter and the organic EL element substrate can be maintained. The configuration of the color filter for the organic EL display device of the present invention and the organic EL element are not limited. It adjusts suitably according to the structure etc. of a board | substrate. Usually, the spacer is formed lower than the partition wall. Specifically, the height of the spacer can be about 1 μm to 8 μm.

  In the case where the spacer includes a spacer base and a spacer barrier film, the thickness of the spacer barrier film can be the same as the thickness of the barrier wall film.

  The width of the spacer is not particularly limited as long as the gap between the color filter and the organic EL element substrate can be maintained. The width of the spacer is not limited to the width of the non-pixel region or the size of the target organic EL display device. It is selected as appropriate. Specifically, the width of the spacer can be about 10 μm to 100 μm when the spacer has a circular cross-sectional shape.

  The vertical cross-sectional shape of the spacer is not particularly limited as long as it can hold the gap between the color filter and the organic EL element substrate. For example, the spacer can be rectangular or trapezoidal.

  The density of the spacer is not particularly limited as long as the gap between the color filter and the organic EL element substrate can be maintained, and is appropriately selected according to the size of the target organic EL display device. .

  The formation position of the spacer is not particularly limited as long as it is a non-pixel region. For example, the spacer can be formed on the light shielding portion.

The “non-pixel region” refers to a region that does not contribute to image display in the display region when the organic EL display device is manufactured using the color filter for an organic EL display device of the present invention. For example, in the color filter 1 for an organic EL display device shown in FIGS. 1A and 1B, a region where the light shielding portion 3 is formed is a non-pixel region. Although not shown, when the TFT is formed on the organic EL element substrate, the TFT of the organic EL element substrate is formed when the color filter for the organic EL display device and the organic EL element substrate face each other. The area facing the area is a non-pixel area.
“Display area” refers to an area including the entire pixel area. The “pixel area” refers to an area that contributes to image display. That is, for example, in the color filter 1 for an organic EL display device shown in FIGS. 1A and 1B, the opening of the light shielding portion 3 becomes a pixel region, and the region including the entire pixel region becomes the display region 11. The display area usually has a pixel area and a non-pixel area. As described above, a region that does not contribute to image display in the display region is a non-pixel region.
The “non-display area” means an area surrounding the display area. For example, in the color filter 1 for an organic EL display device shown in FIGS. 1A and 1B, a region surrounding the display region 11 is a non-display region 12.

  The spacer used in the color filter for the organic EL display device does not require high accuracy like the spacer used in the liquid crystal display device. Therefore, in the present invention, as described above, the height, width, density, arrangement, and the like of the spacer are arbitrary and are not particularly limited.

The method for forming the spacer is not particularly limited as long as a desired spacer can be formed, and is appropriately selected according to the configuration and material of the spacer.
Note that the method for forming the spacer is the same as the method for forming the partition wall, and thus the description thereof is omitted here.

3. Transparent substrate The transparent substrate used in the present invention is not particularly limited as long as it can form the above spacers and partition walls and is transparent to visible light, and is used for a general color filter. It can be the same as the transparent substrate.

  Specifically, a transparent rigid material having no flexibility such as quartz glass, Pyrex (registered trademark) glass, synthetic quartz plate, or a transparent flexible flexible material such as a transparent resin film or an optical resin plate. Materials and the like.

4). Colored layer The colored layer used in the present invention is formed in a pattern on the display region on the transparent substrate.

  As illustrated in FIGS. 1A and 1B, the colored layer in the present invention is generally composed of three colored layers of a red colored layer 4R, a green colored layer 4G, and a blue colored layer 4B. The pattern of the colored layer can be a known arrangement such as a stripe type, a mosaic type, a triangle type, or a four-pixel arrangement type, and the colored area can be arbitrarily set.

  About the material of a colored layer, the material used for the colored layer of a well-known color filter can be used.

  The method for forming the colored layer can be the same as the method for forming the colored layer in a general color filter, and examples thereof include a photolithography method, an inkjet method, and a printing method.

5. Other Members The color filter for an organic EL display device of the present invention can have necessary members in addition to the spacers, partition walls, transparent substrate, and colored layer described above. For example, a colored layer coating film that covers the colored layer to prevent degassing from the colored layer, a light shielding portion that defines pixels in the display region, and the like can be given.

(1) Colored layer coating film The colored layer coating film used in the present invention is formed on the entire surface of the colored layer in order to prevent the organic EL element from deteriorating due to degassing from the colored layer. It is what has.

  The coloring layer coating film 7 may be formed integrally with the spacer 5 and the partition wall 6 as illustrated in FIG. 6, and the spacer barrier film 5d and the partition wall of the spacer 5 as illustrated in FIG. 8A. 6 may be formed integrally with the barrier film 6d for the partition walls, and as shown in FIG. 8B, each of the spacer pedestal 5c and the spacer barrier film 5d of the spacer 5, and the partition pedestal of the partition 6 It may be formed integrally with each of the portion 6c and the barrier film 6d for partition walls, or may be formed separately from the spacers and partition walls although not shown.

  When the colored layer coating film is formed integrally with the spacer and the partition wall, or when it is formed integrally with the spacer barrier film and the partition barrier film, the spacer pedestal portion, the spacer barrier film, and the partition wall The case where the pedestal portion and the barrier film for the partition wall are formed integrally is described in detail in the above section “1. Partition wall”, and thus the description thereof is omitted here.

  When the colored layer coating film is formed separately from the spacers and the partition walls, the material used for the colored layer coating film is not particularly limited as long as it has transparency and gas barrier properties. As such a material, the same material as the partition wall barrier film of the partition wall of the first aspect or the partition wall of the second aspect can be used.

  The thickness of the colored layer coating film is preferably in the range of 0.1 μm to 8.0 μm, more preferably in the range of 0.5 μm to 5.0 μm, and particularly preferably in the range of 1.0 μm to 3.0 μm. . If the thickness of the colored layer coating film is less than the above range, the colored layer coating film may not be formed uniformly. If the thickness of the colored layer coating film exceeds the above range, the organic layer of the present invention This is because it becomes difficult to attach the organic EL element substrate to the color filter for the EL display device.

  As a method for forming the colored layer coating film, the same method as that for the barrier film of the partition wall of the first aspect or the partition wall of the second aspect described above can be used.

  In addition, since the other point of the colored layer coating film was described in the above-mentioned item “1. Partition wall”, description thereof is omitted here.

(2) Light-shielding part The light-shielding part used for this invention demarcates the pixel of a display area.
Since the material, shape, and formation method of such a light shielding portion can be the same as those used in a general color filter for an organic EL display device, description thereof is omitted here.

6). Use The color filter for an organic EL display device of the present invention can be used for a large area organic EL display device because the gap can be kept uniform. The size of the organic EL display device to which the color filter for an organic EL display device of the present invention is applied is preferably in the range of 10 inches to 100 inches.

The color filter for an organic EL display device of the present invention is hermetically sealed between the color filter for an organic EL display device and the organic EL element substrate when bonding is performed while facing the organic EL element substrate having the organic EL element. It can keep sex. As a result, it is possible to obtain an organic EL display substrate having excellent temporal stability while preventing deterioration of the organic EL layer due to moisture, oxygen and the like.
Since the organic EL element substrate facing the color filter for organic EL display devices is described in detail in the section of “B. Organic EL display device” described later, description thereof is omitted here.

B. Organic EL Display Device Next, the organic EL display device of the present invention will be described.
The organic EL display device of the present invention is enclosed between the color filter for organic EL display device described above, an organic EL element substrate having an organic EL element, the color filter for organic EL display device, and the organic EL element substrate. And a filler.

The organic EL display device of the present invention will be described with reference to the drawings.
2A and 2B are schematic cross-sectional views showing an example of the organic EL display device of the present invention. 2A and 2B, the organic EL display device 30 includes an organic EL display device color filter 1, an organic EL element substrate 20, an organic EL display device color filter 1, and an organic EL element. A filler 31 enclosed between the substrates 20 and a sealant 32 formed on the outer periphery of the partition wall 6 of the color filter 1 for the organic EL display device and sealing the organic EL element are provided. As shown in FIG. 2A, the color filter 1 for an organic EL display device includes a transparent substrate 2, a light shielding portion 3 formed in a pattern in a display area on the transparent substrate 2, and a display on the transparent substrate 2. The colored layer 4 (4R, 4B, 4G) formed in the opening of the light shielding part 3 in the region, the spacer 5 formed on the light shielding part 3 in the display region on the transparent substrate 2, and the non-layer on the transparent substrate 2 The display area includes a partition wall 6 formed so as to surround the display area. On the other hand, the organic EL element substrate 20 is formed on the substrate 21, the organic EL element 26 formed on the substrate 21, and the organic EL element 26, as shown in FIG. And a gas barrier layer 27 to be stopped. The organic EL element 26 includes a back electrode layer 22 formed in a pattern on the substrate 21, an insulating layer 23 formed in an opening of the back electrode layer 22, and an organic formed on the back electrode layer 22. It has an EL layer 24 and a transparent electrode layer 25 formed on the organic EL layer 24.

  According to the present invention, since the color filter for the organic EL display device described above is used, the spacer is formed in the color filter for the organic EL display device, so that the color filter for the organic EL display device and the organic EL element substrate The gap between them can be kept uniform. Therefore, for example, when the filler is a curable resin, the substrate bends until the curable resin composition is sealed between the color filter for the organic EL display device and the organic EL element substrate and cured. And the gap can be kept uniform. On the other hand, when the filler does not have rigidity such as inert gas or inert liquid, the gap can be kept uniform not only during the manufacturing process of the organic EL display device but also during use. . Therefore, in the present invention, it is possible to suppress the occurrence of display unevenness.

  In the present invention, since the color filter for an organic EL display device described above is used, an organic EL display device having excellent temporal stability can be obtained by forming a partition wall in the color filter for the organic EL display device. it can.

  Furthermore, since the spacer is formed in the color filter for organic EL display devices, the strength can be increased.

  The color filter for the organic EL display device has been described in detail in the above section “A. Color filter for organic EL display device”, and thus the description thereof is omitted here. Hereinafter, another configuration of the organic EL display device of the present invention will be described.

1. Filler The filler used in the present invention is sealed between the color filter for an organic EL display device and the organic EL element substrate.

  The filler can be the same as that used in a general organic EL display device, and may or may not have rigidity. An example of the rigid filler is a curable resin. On the other hand, as the filler having no rigidity, an inert gas and an inert liquid can be exemplified.

  The curable resin is not particularly limited as long as it is a general filler, and either a thermosetting resin or a photocurable resin can be used. Specific examples include photocuring and thermosetting adhesives having reactive vinyl groups of acrylate oligomers and methacrylate oligomers. In addition, heat-based and chemical-curing type (two-component mixed) adhesives such as epoxy type can be mentioned.

Moreover, as an inert gas, if it is a general filler, it will not specifically limit, For example, nitrogen gas, helium gas, and argon gas can be used.
Furthermore, the inert liquid is not particularly limited as long as it is a general filler, and for example, a fluorinated hydrocarbon solution (manufactured by Sumitomo 3M: trade name Fluorinert) can be used.

  When the filler is a curable resin, as the arrangement of the curable resin, the filler made of the curable resin may be a colored layer or a colored layer coating film of a color filter for an organic EL display device and an organic EL element substrate. What is necessary is just to be enclosed between the color filter for organic EL display apparatuses, and an organic EL element board | substrate so that it may contact with a gas barrier layer. For example, as shown in FIGS. 2A and 2B, a filler 31 made of a curable resin is a space between the color filter 1 for an organic EL display device and the organic EL element substrate 20, and is formed by partition walls 6. It may be filled so as to fill all of the separated spaces, and as illustrated in FIGS. 2A and 10, the filler 31 made of a curable resin is used as the organic EL display device color filter 1 and the organic material. It may be disposed in a part of the space between the EL element substrate 20 and separated by the partition wall 6. Among these, it is preferable that the filler made of a curable resin is filled so as to fill all the space between the color filter for the organic EL display device and the organic EL element substrate and separated by the partition walls. When the space between the color filter for organic EL display device and the organic EL element substrate is filled with a uniform material, light generated from the organic EL element can be prevented from being scattered. Therefore, it can be made excellent in luminous efficiency.

  As a filling method of the filler, a general method can be adopted, and it is appropriately selected according to the kind of the filler. For example, when the filler is a curable resin, after placing the organic EL element substrate and the color filter for the organic EL display device facing each other, a method of injecting the resin composition between the two substrates, or the organic EL element substrate An example is a method in which a resin composition is applied on a gas barrier layer or a colored layer or a colored layer coating film of a color filter for an organic EL display device and then cured.

Moreover, a desiccant may be disposed between the color filter for an organic EL display device and the organic EL element substrate together with a filler. This can more effectively prevent the organic EL element from being deteriorated by moisture or the like.
The desiccant can be the same as the desiccant generally used in organic EL display devices. For example, a desiccant having an oxide of an alkali metal or an alkaline earth metal and a binder resin, an alkali metal or an alkali What consists only of oxides of earth metals can be used. The binder resin only needs to have excellent transparency and alkali resistance, and for example, a non-alkali developable curable resin can be used.
Moreover, as arrangement | positioning of a desiccant, it is preferable that the desiccant is contacting with the colored layer or colored layer coating film of the color filter for organic EL display apparatuses.

2. Organic EL Element Substrate The organic EL element substrate used in the present invention has an organic EL element.
The organic EL element substrate only needs to have an organic EL element. For example, the substrate, a back electrode layer formed in a pattern on the substrate, an insulating layer formed in the opening of the back electrode layer, a back electrode An organic EL layer including at least an organic light emitting layer and an organic EL element having a transparent electrode layer formed on the organic EL layer can be provided.
Hereinafter, each structure of the organic EL element substrate will be described.

(1) Substrate As a substrate used for the organic EL element substrate, any substrate that can support an organic EL element or the like to be described later may be used, and those generally used for an organic EL display device can be used. .
In the present invention, since light is extracted from the color filter side for the organic EL display device, the substrate may be transparent or opaque.

(2) Organic EL Element The organic EL element has a back electrode layer and a transparent electrode layer, and an organic EL layer including at least an organic light emitting layer, which is formed between the back electrode layer and the transparent electrode layer.

(I) Organic EL layer The organic EL layer has one or more organic layers including at least an organic light emitting layer, and is usually a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer. Etc.

(Ii) Transparent electrode layer and back electrode layer The transparent electrode layer is provided to apply voltage to the organic EL layer sandwiched between the transparent electrode layer and the back electrode layer to cause the light emitting layer to emit light. is there. Further, the light generated in the light emitting layer is transmitted to the color filter side for the organic EL display device. This transparent electrode layer is disposed between the organic EL layer and the color filter for an organic EL display device.
The back electrode layer is disposed between the organic EL layer and the substrate. The back electrode layer forms the other electrode for causing the organic EL layer to emit light, and is an electrode having a charge opposite to that of the transparent electrode layer.

  As such a transparent electrode layer and a back electrode layer, any material that can cause the light emitting layer to emit desired light can be used, and those generally used for organic EL display devices can be used.

(Iii) Insulating layer The insulating layer is formed in order to prevent direct contact between the transparent electrode layer and the back electrode layer.
As such an insulating layer, what is generally used for an organic EL display device can be used.

(3) TFT
Although not shown, a TFT may be formed on the organic EL element substrate.
As the TFT, those generally used in organic EL display devices can be used.

3. Sealant The sealant used in the present invention is formed on the peripheral edge of the organic EL display device color filter and the organic EL element substrate, and seals the organic EL element.
As a constituent material of such a sealing agent, any material that can suppress the organic EL element from coming into contact with moisture in the atmosphere may be used, and a material generally used in an organic EL display device is used. be able to.

4). Other Members The organic EL display device of the present invention may have other configurations as necessary. Other configurations include, for example, a color conversion layer that absorbs light emitted from the light emitting layer and emits visible light region fluorescence. Hereinafter, the color conversion layer will be described.

(Color conversion layer)
The color conversion layer used in the present invention is a layer containing a fluorescent material that absorbs light from the light emitting layer and emits fluorescence in the visible light region, and makes the light from the light emitting layer blue, red, or green. It is.
The configuration of the color conversion layer is appropriately selected according to the light emitting layer of the organic EL display device to be applied. For example, in the case of a blue light-emitting layer, the color conversion layer includes a red conversion layer that emits red fluorescence, a green conversion layer that emits green fluorescence, and a transmission portion that transmits light from the blue light-emitting layer as it is.

  The formation position of the color conversion layer may be on the light emitting layer, and may be on the transparent electrode layer or the colored layer of the color filter for organic EL display device of the present invention.

  The thickness of the color conversion layer is not particularly limited as long as it sufficiently absorbs light from the light emitting layer and emits fluorescence. Considering the fluorescent dye used, the concentration of the fluorescent dye, etc. And set as appropriate.

  Each color conversion layer is regularly arranged corresponding to the pixels. The arrangement of the color conversion layer pattern is not particularly limited as long as the color conversion layers are arranged on an average when viewed macroscopically, and examples thereof include a stripe arrangement, a mosaic arrangement, and a delta arrangement.

The color conversion layer usually contains a fluorescent dye that absorbs light from the light emitting layer and emits fluorescence and a matrix resin.
The fluorescent dye absorbs light in the near ultraviolet region or visible region emitted from the light emitting layer, particularly light in the blue or blue-green region, and emits visible light having different wavelengths as fluorescence. When the light emitting layer is a blue light emitting layer, as the fluorescent dye, for example, a fluorescent dye that emits fluorescence in the red region and a fluorescent dye that emits fluorescence in the green region are used.

C. Next, a method for producing a color filter for an organic EL display device according to the present invention will be described.
The method for producing a color filter for an organic EL display device of the present invention is used for an organic EL display device in which a filler is enclosed between a color filter and an organic EL element substrate having an organic EL element, and a transparent substrate. And a colored layer formed in a pattern on the display area on the transparent substrate, and a non-pixel area of the display area on the transparent substrate, and maintaining a gap between the color filter and the organic EL element substrate For manufacturing a color filter for an organic EL display device having a spacer formed on the transparent substrate and a partition formed to surround the display region in a non-display region on the transparent substrate. The spacer and the partition include a member made of the same material, and the member made of the same material constituting the spacer and the partition It is characterized in that at forming.

  According to the present invention, since the members made of the same material constituting the spacer and the partition can be formed at the same time, when used in an organic EL display device, the deterioration of the organic EL layer due to moisture and oxygen is prevented. It is possible to manufacture a color filter for an organic EL display device that has excellent temporal stability and can suppress the occurrence of display unevenness with a small number of steps and at a low cost.

  As a method for producing a color filter for an organic EL display device of the present invention, the above-described color filter for an organic EL display device can be produced, and members made of the same material constituting spacers and partition walls can be simultaneously formed. The method is not particularly limited as long as it is a method capable of achieving the above. Specific examples are shown below.

  11A to 11C are process diagrams showing an example of a method for producing a color filter for an organic EL display device of the present invention in the case where a spacer and a partition made of the same material are simultaneously formed. First, as shown in FIG. 11 (a), a transparent negative photosensitive resin composition is applied on the transparent substrate 2 on which the light-shielding portion 3 and the colored layers 4 (4R, 4G, 4B) are formed. The conductive resin layer 51 is formed. Next, as shown in FIG. 11B, a light shielding film 52 and a semitransparent film 53 are formed on a transparent substrate 51, and a gradation mask having a light shielding region, a semi-transmissive region, and a transmissive region is used. The photosensitive resin layer 51 is irradiated with ultraviolet light 55 and then developed. In this way, as shown in FIG. 11C, the spacer 5 and the partition wall 6 made of the same material can be formed simultaneously.

Further, the spacer 5 and the partition pedestal 6c made of the same material can be formed at the same time by the same steps as in FIGS. 11A to 11C as illustrated in FIG. 3A.
In this case, although not shown, after the formation of the spacer and the partition pedestal, for example, an inorganic material having a gas barrier property is deposited so as to cover the spacer, the partition pedestal and the colored layer, and then patterned, thereby forming FIG. As illustrated in (a), a barrier film 6d for barrier ribs can be formed.

Further, by the same steps as in FIGS. 11A to 11C, as illustrated in FIGS. 4A and 8A, the spacer base portion 5c and the partition base portion 6c made of the same material are used. Can be formed simultaneously.
In this case, although not shown, after the formation of the spacer pedestal and the partition pedestal, an inorganic material having a gas barrier property is deposited so as to cover the spacer pedestal, the partition pedestal and the colored layer. As illustrated in (a), the spacer barrier film 5d, the partition barrier film 6d, and the colored layer coating film 7 made of the same material can be formed simultaneously and integrally.
Although not shown, after forming the spacer pedestal and the partition pedestal, an inorganic material having a gas barrier property is deposited so as to cover the spacer pedestal, the partition pedestal and the colored layer, and then patterned. As illustrated in FIG. 4A, the spacer barrier film 5d and the partition barrier film 6d made of the same material can be formed at the same time.

  12 (a) to 12 (c) are steps showing an example of a method for producing a color filter for an organic EL display device of the present invention in the case where a spacer made of the same material, a partition wall, and a colored layer coating film are simultaneously formed. FIG. First, as shown in FIG. 12 (a), a transparent negative photosensitive resin composition is applied on the transparent substrate 2 on which the light-shielding portion 3 and the colored layers 4 (4R, 4G, 4B) are formed. The conductive resin layer 51 is formed. Next, as shown in FIG. 12B, a first semi-transparent film 53 and a second semi-transparent film 54 having different transmittances from the light-shielding film 52 are formed on the transparent substrate 51. The photosensitive resin layer 51 is irradiated with ultraviolet light 55 using a gradation mask having a first semi-transmissive region, a second semi-transmissive region, and a transmissive region, and then developed. In this way, as shown in FIG. 12C, the spacer 5, the partition wall 6, and the colored layer coating film 7 made of the same material can be formed simultaneously and integrally.

12A to 12C, the spacer pedestal 5c, the partition pedestal 6c, and the colored layer coating film made of the same material are exemplified as shown in FIG. 8B. The first layer 7a can be formed simultaneously and integrally.
In this case, although not shown, the spacer pedestal, the partition pedestal, and the colored layer coating film first layer are formed so as to cover the spacer pedestal, the partition pedestal, and the colored layer coating film first layer. By vapor-depositing an inorganic material having a gas barrier property, as shown in FIG. 8B, a spacer barrier film 5d, a barrier barrier film 6d, and a colored layer coating film second layer 7b made of the same material are used. Can be formed simultaneously and integrally.

  FIGS. 13A to 13D are process diagrams showing an example of a method for producing a color filter for an organic EL display device of the present invention in the case where a spacer forming layer and a partition forming layer are formed simultaneously with a colored layer. is there. First, as shown in FIG. 13A, the light shielding part 3 and the partition light shielding part 13 made of the same material are simultaneously formed on the transparent substrate 2. At this time, as illustrated in FIG. 14, the light shielding portions 3 are formed in a matrix shape, and the partition light shielding portions 13 are formed in a frame shape. Next, as shown in FIG. 13 (b), the red colored layer 4 R is formed in the opening of the light shielding part 3 using the red colored layer forming coating solution for forming the red colored layer, and the partitioning light shielding part 13 is formed. The barrier rib forming layer 6R and the spacer forming layer 5R are simultaneously formed on the light shielding portion 3, respectively. Next, as shown in FIG. 13 (c), the green colored layer 4G is formed on the opening of the light shielding portion 3 and the partition wall forming layer 6R is formed using the green colored layer forming coating solution for forming the green colored layer. The partition forming layer 6G and the spacer forming layer 5G are simultaneously formed on the spacer forming layer 5R. Subsequently, as shown in FIG. 13 (d), the blue colored layer 4B is formed in the opening of the light shielding portion 3 on the partition wall forming layer 6G by using the blue colored layer forming coating liquid for forming the blue colored layer. The barrier rib forming layer 6B and the spacer forming layer 5B are simultaneously formed on the spacer forming layer 5G. In this way, when forming the colored layer, the partition wall forming layer is stacked on the partition light shielding portion, and the spacer forming layer is stacked on the light shielding portion, so that the partition wall and the spacer can be formed simultaneously. it can. By stacking a partition formation layer and a spacer formation layer made of the same material as the coloring layer, the partition and spacer formation process can be simplified and the cost can be reduced.

  In the above case, the thickness of the barrier rib forming layer formed on the barrier rib shading portion is controlled by the width of the barrier rib shading portion, and the barrier rib forming layer is formed on the lower barrier rib forming layer by the width of the lower barrier rib forming layer. It is possible to control the thickness of the upper barrier rib forming layer, thereby controlling the height of the barrier rib. Therefore, a partition wall having a desired height can be easily formed.

Further, the spacer forming layers 5R, 5G, and 5B and the barrier rib forming layers 6R, 6G, and 6B are colored as illustrated in FIG. 3B by the same processes as in FIGS. 13A to 13D. It can be formed simultaneously with the layer 4 (4R, 4G, 4B).
In this case, although not shown, after the formation of the spacer and the partition pedestal, for example, an inorganic material having a gas barrier property is deposited so as to cover the spacer, the partition pedestal and the colored layer, and then patterned, thereby forming FIG. As illustrated in (b), the barrier film 6d for barrier ribs can be formed.

Further, the spacer forming layers 5R, 5G, and 5B and the barrier rib forming layers 6R, 6G, and 6B are colored by the same steps as in FIGS. 13A to 13D, as illustrated in FIG. 4B. It can be formed simultaneously with the layer 4 (4R, 4G, 4B).
In this case, although not shown, after the formation of the spacer pedestal and the partition pedestal, an inorganic material having a gas barrier property is deposited so as to cover the spacer pedestal, the partition pedestal and the colored layer, and then patterned. Thus, as illustrated in FIG. 4B, the spacer barrier film 5d and the partition barrier film 6d made of the same material can be formed simultaneously.

  The constituent members and the method for forming them are described in detail in the section “A. Color filter for organic EL display device”, and thus the description thereof is omitted here.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[Example 1]
1. Formation of light shielding portion As a transparent substrate, a glass substrate (Corning 1737 glass) having a size of 300 mm × 400 mm and a thickness of 0.7 mm was prepared. After washing this transparent substrate according to a conventional method, a negative photosensitive black resist (CFPR DN-83 manufactured by Tokyo Ohka Kogyo Co., Ltd.) is applied, exposed, developed, and heat-treated through a predetermined mask to form a lattice-like pattern. A light shielding part was formed.

2. Next, a negative photosensitive resin composition for a red colored layer, a negative photosensitive resin composition for a blue colored layer, and a negative photosensitive resin composition for a green colored layer are prepared. did.

<Negative photosensitive resin composition for red colored layer>
・ Red pigment (Chromophthal Red A2B manufactured by Ciba Specialty Chemicals)
4.8 parts by weight / yellow pigment (PASFOL Yellow D1819, manufactured by BASF) 1.2 parts by weight / dispersant (Disperbic 161, manufactured by Big Chemie) 3.0 parts by weight / monomer (SR399, manufactured by Sartomer) 4.0 weight Part / Polymer I 5.0 parts by weight / Initiator (Irgacure 907 manufactured by Ciba Specialty Chemicals)
1.4 parts by weight / initiator (2,2′-bis (o-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl-1,2′-biimidazole) 0.6 parts by weight / solvent ( Propylene glycol monomethyl ether acetate) 80.0 parts by weight

<Negative photosensitive resin composition for blue colored layer>
Blue pigment (BASF Heliogen Blue L6700F) 6.0 parts by weight Pigment derivative (Abyssia Solsperse 5000) 0.6 parts by weight Dispersant (Bic Chemie Dispersic 161) 2.4 parts by weight Monomer (SR399, manufactured by Sartomer) 4.0 parts by weight, Polymer I, 5.0 parts by weight, initiator (Irgacure 907, manufactured by Ciba Specialty Chemicals)
1.4 parts by weight / initiator (2,2′-bis (o-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl-1,2′-biimidazole) 0.6 parts by weight / solvent ( Propylene glycol monomethyl ether acetate) 80.0 parts by weight

<Negative photosensitive resin composition for green colored layer>
Green pigment (Avisia Monastral Green 9Y-C) 4.2 parts by weight Yellow pigment (BASF Paliotor Yellow D1819) 1.8 parts by weight Dispersant (Bicchemy Disperbic 161) 3.0 Part by weight / monomer (SR399, manufactured by Sartomer) 4.0 part by weight / Polymer I, 5.0 parts by weight / initiator (Irgacure 907, manufactured by Ciba Specialty Chemicals)
1.4 parts by weight / initiator (2,2′-bis (o-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl-1,2′-biimidazole) 0.6 parts by weight / solvent ( Propylene glycol monomethyl ether acetate) 80.0 parts by weight

The polymer I is based on 100 mol% of a copolymer of benzyl methacrylate: styrene: acrylic acid: 2-hydroxyethyl methacrylate = 15.6: 37.0: 30.5: 16.9 (molar ratio). 2-methacryloyloxyethyl isocyanate was added at 16.9 mol%, and the weight average molecular weight was 42500.
Here, the said weight average molecular weight is calculated | required as a standard polystyrene conversion value by gel permeation chromatography (GPC).

Next, a negative photosensitive resin composition for a red colored layer is applied by a spin coating method so as to cover the light-shielding portion on the transparent substrate, and is exposed and developed through a photomask for the red colored layer, A red colored layer was formed.
A blue colored layer and a green colored layer were formed in the same manner.

3. Formation of partition wall pedestal and spacer Next, the following transparent resin composition was applied onto the glass substrate on which the colored layer had been formed by a spin coating method.

<Composition of transparent resin composition>
・ Methyl methacrylate-styrene-acrylic acid copolymer 32 parts by weight ・ Epicoat 180S70 (manufactured by Japan Epoxy Resin Co., Ltd.) 18 parts by weight ・ 42 parts by weight of dipentaerythritol pentaacrylate ・ Initiator (Irgacure 907 manufactured by Ciba Specialty Chemicals) ) 8 parts by weight 3-methoxybutyl acetate (referred to as Metoace) 300 parts by weight

Next, after drying under reduced pressure at a vacuum degree of about 1 × 10 ⁻² Torr, prebaking at 90 ° C., a predetermined photomask is placed at a distance of 100 μm from the coating film of the transparent resin composition, and a proximity aligner is used. Using a 2.0 kW ultra-high pressure mercury lamp, exposure was performed at a predetermined position. At this time, as a photomask, a halftone mask was used in which the mask transmission part was a part for forming a partition pedestal and the mask semi-transmission part was a part for forming a spacer. Subsequently, it was immersed in 0.05% potassium hydroxide aqueous solution (liquid temperature 23 ° C.) for 1 minute and alkali-developed, and only the uncured portion of the coating film was removed to form a partition base and a spacer.

4). Formation of barrier film for barrier rib Next, a silicon oxide film was formed on the glass substrate on which the pedestal for barrier rib was formed by the sputtering method under the following conditions. The barrier film for the partition wall was 1500 mm.
<Film formation conditions>
-Gas flow ratio Ar: O ₂ = 1: 0.5
・ Power: 1.5kW
・ Gas pressure: 3mTorr
As described above, a color filter having partition walls and spacers was produced.

5. Production of organic EL element substrate (Production of TFT substrate)
As the substrate, a glass substrate (Corning 1737 glass) having a size of 300 mm × 400 mm and a thickness of 0.7 mm was prepared. Using this substrate, a TFT substrate was produced according to a conventional method.

(Formation of transparent electrode layer)
A chromium film having a thickness of 0.4 μm was formed on the TFT substrate by a DC sputtering method, and an ITO film having a thickness of 150 nm was continuously formed by a sputtering method. Next, a photosensitive resist was applied to the entire surface of the ITO film, mask exposure, development, and etching of the ITO film were performed to form a transparent electrode layer. Thereafter, in order to pattern the chromium film, a photosensitive resist was applied on the ITO film and the chromium film, mask exposure, development, and etching of the chromium film were performed to form auxiliary electrodes.

(Formation of insulating layer)
A coating solution for forming an insulating layer was prepared using a polyimide resin (DL1602 manufactured by Toray Industries, Inc.). This insulating layer forming coating solution was applied on the back electrode layer by spin coating, and then pre-baked (100 ° C., 5 minutes) to form a resin film having a thickness of 1 μm. Next, mask exposure, development, and post-baking (200 ° C., 30 minutes) were performed to form an insulating layer.

(Formation of partition walls for organic EL elements)
A partition wall forming coating solution for organic EL elements (manufactured by Nippon Zeon Co., Ltd., photoresist, ZPN2646) was applied onto the insulating layer by spin coating, and prebaked (100 ° C., 3 minutes). After that, exposure is performed using a predetermined photomask, baking (100 ° C., 3 minutes) for stabilizing the reverse taper formation is performed, and development is performed with a developer (ZTMA-100, manufactured by Nippon Zeon Co., Ltd.). Bake (200 ° C., 30 minutes) was performed. Thereby, the partition for organic EL elements was formed on the insulating layer. This organic EL element partition wall had a height of 4 μm, a lower part (insulating layer side) width of 15 μm, and an upper part width of 20 μm and a reverse taper shape.

(Formation of organic EL layer)
Next, an organic EL layer composed of a hole injection layer, a white light emitting layer, and an electron injection layer was formed by a vacuum deposition method using the partition for an organic EL element as a mask.
First, 4,4 ′, 4 ″ -tris [N- (3-methylphenyl) -N-phenylamino] triphenylamine was deposited to 200 nm through a mask having an opening corresponding to the display region. Then, 4,4′-bis [N- (1-naphthyl) -N-phenylamino] biphenyl is vapor-deposited to a thickness of 20 nm, and the partition walls serve as a mask, and only between the partition walls. A hole injection layer was formed on the transparent electrode layer by passing a material for forming the hole injection layer.
Similarly, 4,4′-bis (2,2′-diphenylvinyl) biphenyl was deposited to a thickness of 40 nm to form a film. At the same time, a small amount of rubrene (manufactured by Aldrich Co.) was contained. This formed the white light emitting layer.
Thereafter, tris (8-quinolinol) aluminum was deposited to a thickness of 20 nm to form a film, thereby forming an electron injection layer.

(Formation of counter electrode layer)
Next, magnesium and silver are vapor-deposited simultaneously by a vacuum vapor deposition method through a mask having a predetermined opening wider than the display area (magnesium vapor deposition rate = 1.3 nm / second to 1.4 nm / second, silver The deposition rate was 0.1 nm / second). Thereby, the partition electrode was used as a mask to form a 200 nm-thick counter electrode layer made of a magnesium / silver compound on the organic EL layer.

6). Preparation of organic EL display device Next, an adhesive (thermosetting resin composition: 20X-325C manufactured by Three Bond Co., Ltd.) was applied to the entire surface of the organic EL element substrate with a quantitative dispenser in a glove box filled with nitrogen. Next, a color filter was bonded to a predetermined position on the bonding surface of the organic EL element substrate, and the adhesive was cured by heating on a hot plate at 90 ° C. for 1 hour, to obtain an organic EL display device.

7). Preparation of water vapor permeability evaluation cell (Preparation of counter substrate)
As the substrate, a glass substrate (Corning 1737 glass) having a size of 300 mm × 400 mm and a thickness of 0.7 mm was prepared. A portion other than the portion to be deposited on the substrate by vacuum deposition was masked with a metal mask, and metallic calcium was deposited. The thickness of the metallic calcium layer was 1500 mm. Next, aluminum was formed by vapor deposition on the entire surface of the substrate on which the metal calcium layer was formed. The film thickness of the aluminum layer was 1000 mm.

(Production of evaluation cell)
Next, sealing was performed with a color filter prepared in advance in a glove box filled with nitrogen to obtain an evaluation cell.

[Example 2]
A negative photosensitive resin composition for a red colored layer is applied by a spin coating method so as to cover a light shielding portion on a transparent substrate, and is exposed to light and developed through a photomask for a red colored layer. Formed. At that time, a partition forming layer and a spacer forming layer made of the same material as the red colored layer were also formed at the same time. A blue colored layer and a green colored layer were formed in the same manner. In this manner, simultaneously with the colored layer, a partition base portion on which the partition forming layer was stacked and a spacer on which the spacer forming layer was stacked were formed.
Otherwise, in the same manner as in Example 1, a color filter, an organic EL display device and an evaluation cell were produced.

[Comparative example]
A color filter, an organic EL display device and an evaluation cell were prepared in the same manner as in Example 1 except that the partition walls and the spacers were not formed on the colored layer.

[Evaluation]
The dimensions of the partition walls and spacers in the color filters of Examples 1 and 2 and Comparative Example were measured with a Keyence laser microscope. The results are shown in Table 1.
Further, the organic EL display device was caused to emit light, and pixel shrinkage and dark spot generation of the organic EL layer after 200 hours elapsed time were visually evaluated with a microscope. The case where pixel contraction and dark spot were generated was indicated as x, and the case where no pixel spot was generated was indicated as ◯. The results are shown in Table 1.
Further, after exposing the water vapor permeability evaluation cell in a constant temperature and humidity oven at 60 ° C. and a humidity of 90% for 200 hours, the state of calcium was observed. The calcium metal reacts with water vapor and changes the color of calcium hydroxide only. Images taken before and after the test were taken with a laser microscope, and the area of the discolored portion was measured by image processing. The water weight in the discolored portion was calculated from the discolored area and the discolored calcium layer thickness, and the water vapor transmission rate (g / m ² / day) was calculated from the partition wall area and the test time. The results are shown in Table 1.
Moreover, the organic EL display device was displayed in white, and the presence or absence of display unevenness was visually evaluated. The case where display unevenness occurred was rated as x, and the case where display unevenness did not occur was rated as ○. The results are shown in Table 1.

As a result, pixel shrinkage, dark spots, and display unevenness occurred in the organic EL layer of the organic EL display device manufactured as in the comparative example. On the other hand, in the organic EL layer of the organic EL display device manufactured using the color filter provided with the partition walls and the spacers as in Examples 1 and 2, none of pixel contraction, dark spots, and display unevenness occurred.
Moreover, what provided the partition in the color filter like Examples 1-2 had a water vapor transmission amount lower than the thing which does not provide a partition in a color filter like a comparative example.

DESCRIPTION OF SYMBOLS 1 ... Color filter for organic EL display devices 2 ... Transparent substrate 3 ... Light-shielding part 4, 4R, 4G, 4B ... Colored layer 5 ... Spacer 5c ... Spacer base part 5d ... Spacer barrier film 5R, 5G, 5B ... Spacer formation Layer 5S ... Colored laminated body for spacer 6 ... Partition wall 6c ... Base for partition wall 6d ... Barrier film for partition wall 6R, 6G, 6B ... Partition layer forming layer 6S ... Colored laminate for partition wall 7 ... Colored layer coating film 20 ... Organic EL element substrate 21 ... Substrate 22 ... Back electrode layer 23 ... Insulating layer 24 ... Organic EL layer 25 ... Transparent electrode layer 26 ... Organic EL element 27 ... Gas barrier layer 30 ... Organic EL display device 31 ... Filler 32 ... Sealing agent

Claims (9)

A color filter for an organic electroluminescence display device used for an organic electroluminescence display device in which a filler is sealed between a color filter and an organic electroluminescence element substrate having an organic electroluminescence element,
A transparent substrate;
A colored layer formed in a pattern on the display area on the transparent substrate;
A spacer that is formed in a non-pixel region of the display region on the transparent substrate and holds a gap between the color filter and the organic electroluminescence element substrate;
A partition wall having a gas barrier property formed so as to surround the display area in a non-display area on the transparent substrate,
The partition includes a partition base and a partition barrier film formed to cover the partition base and made of an inorganic material having a gas barrier property,
The spacer has a spacer pedestal portion, and a spacer barrier film made of an inorganic material having a gas barrier property, which is formed so as to cover the spacer pedestal portion,
A colored layer coating film is formed on the colored layer so as to cover the colored layer, and the colored layer coating film, the spacer barrier film, and the partition barrier film are integrally formed. A color filter for an organic electroluminescence display device.   When the partition wall is bonded to the color filter for organic electroluminescence display device so that the organic electroluminescence element substrate faces the airtight seal between the color filter for organic electroluminescence display device and the organic electroluminescence element substrate The color filter for an organic electroluminescence display device according to claim 1, wherein the color filter has a height capable of maintaining the property.   The spacer has a spacer colored laminate in which a spacer forming layer made of the same material as the colored layer is laminated, and the partition is laminated with a partition forming layer made of the same material as the colored layer. The color filter for organic electroluminescence display devices according to claim 1, further comprising a colored laminate for partition walls. The color filter for an organic electroluminescence display device according to any one of claims 1 to 3, wherein the spacer pedestal portion and the partition wall pedestal portion are formed of the same material .   The color filter for an organic electroluminescence display device according to any one of claims 1 to 4, wherein a plurality of the partition walls are formed in the non-display area. A color filter for an organic electroluminescence display device according to any one of claims 1 to 5,
An organic electroluminescence element substrate having an organic electroluminescence element;
An organic electroluminescence display device comprising: a color filter for the organic electroluminescence display device; and a filler sealed between the organic electroluminescence element substrates. It is used for an organic electroluminescence display device in which a filler is sealed between a color filter and an organic electroluminescence element substrate having an organic electroluminescence element, and is patterned in a transparent substrate and a display region on the transparent substrate. A colored layer formed on the transparent substrate, a spacer formed in a non-pixel region of the display region on the transparent substrate, and a spacer for maintaining a gap between the color filter and the organic electroluminescence element substrate; A method for producing a color filter for an organic electroluminescence display device, comprising producing a color filter for an organic electroluminescence display device having a partition formed so as to surround the display region in a non-display region,
The spacer has a spacer pedestal portion, and a spacer barrier film made of an inorganic material having a gas barrier property so as to cover the spacer pedestal portion, and the partition wall includes a partition pedestal portion, and A barrier film for a partition made of an inorganic material having a gas barrier property formed so as to cover the base for the partition;
A colored layer coating film is formed on the colored layer so as to cover the colored layer, and the colored layer coating film, the spacer barrier film, and the partition barrier film are simultaneously formed from the same material. A method for producing a color filter for an organic electroluminescence display device. The spacer has a spacer colored laminate in which a spacer forming layer made of the same material as the colored layer is laminated, and the partition is laminated with a partition forming layer made of the same material as the colored layer. A colored laminate for the partition wall,
The method for producing a color filter for an organic electroluminescence display device according to claim 7, wherein the spacer forming layer and the partition wall forming layer are formed simultaneously with the colored layer. The method for producing a color filter for an organic electroluminescence display device according to claim 7 or 8, wherein the spacer base and the partition base are formed simultaneously from the same material .

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