WO2017176011A1 - Compound for encapsulating organic electroluminescent device, composition, and encapsulated device comprising same - Google Patents

Abstract

The present invention provides: a composition for encapsulating an organic electroluminescent device, capable of improving the reliability of a member for a device by blocking the penetration of water and oxygen from the outside; and an encapsulated device comprising the same.

Description

Encapsulation compound, composition for organic electroluminescent device and encapsulated device comprising same

The present invention relates to an encapsulation composition for an organic electroluminescent device and an encapsulated device including the same.

In the organic light emitting diode (OLED), electrons injected from a cathode and holes injected from an anode are combined in an emission layer of an organic light emitting part to form an electron-hole pair. In the process of recombination, they are self-luminous flat panel display devices.

OLED has high luminous efficiency in the three primary colors of light, red, green, blue and white. It has low driving voltage and power consumption, wide viewing angle, and fast response time of pixels. . In addition, the OLED device can realize an ultra-thin, ultra-light display, which can be manufactured to a thickness of 1 mm or less on a substrate such as glass or plastic, and is being actively researched in the flexible display field.

However, in the case of OLED devices, light emitting materials and electrode materials are oxidized by oxygen or moisture, thereby causing problems such as dark spots and pixel shrinkage, resulting in a decrease in lifespan and efficiency.

As mentioned above, encapsulation technology that blocks oxygen or moisture flowing into the OLED device is one of key technologies essential for development.

This encapsulation technology can be classified into three types: Can (Glass encap), TFE (thin film encap), and Hybrid. Each method is a metal or glass cover plate with gas barrier properties and a can with getter. The TFE method and the plastic barrier film, which can be called the face sealing method, which realize barrier properties with organic or inorganic or inorganic multilayer thin film on the upper layer of the device, are used as cover plates and between the passivation thin film. It can be described by a hybrid method of placing the adhesive layer. The sealing method is disclosed in Korea Patent Publication No. 2011-0071039.

The Can (Glass encap) method, which is widely used to date, has an OLED device between two glasses composed of a substrate and a cover, and melts and seals glass powder with a laser or seals it with UV adhesive. Although the heat conduction characteristics are poor due to the inert gas in the device, the cost of glass processing increases due to the large area, and there is a difficulty in applying to flexible OLED panels that require flexibility.

In order to compensate for the disadvantages of the glass encapsulation technology, an OLED layer is laminated on the entire surface of the OLED element with an inorganic layer such as Al ₂ O ₃ having a high barrier to oxygen or moisture, and an organic layer of a polymer is alternately laminated to protect the OLED organic element. Thin film encapsulation (TFE), a multilayer thin film encapsulation technology, is being actively researched. In addition, a simple encapsulation adhesive film (Hybrid) technology for laminating the entire OLED device as a film having moisture barrier properties is also actively developed.

Therefore, the encapsulation material of the organic light emitting device should be applicable to the flexible OLED device, and also should be a material applicable to the adhesive layer located between the passivation layer and the cover plate of the upper layer of the organic light emitting device in the hybrid method.

The TFE method, which is a multi-layer encapsulation method, has a moisture permeability suitable for an organic light emitting device when a thin film multilayer structure is realized by applying 4 to 6 pairs of Al ₂ O ₃ and an organic barrier layer as an inorganic barrier layer using the Barix method of Vitex. US Patent 7767498 is disclosed.

The organic barrier layer used in the TFE method is located between the inorganic barrier layers, and the inorganic barrier layer may be metal oxide / nitride such as AlxOy, SiOx, SiNy, SiOxNy, and the inorganic barrier layer may be sputtered deposition on the organic barrier layer. Or plasma enhanced chemical vapor deposition (PECVD).

The organic barrier layer should ensure transparency suitable for display characteristics while maintaining the flatness of the organic barrier layer without loss of thickness or surface uniformity for particles having high energy in the process for forming the inorganic barrier layer. Particularly, when the inorganic barrier layer is formed, the metal oxide / nitride particles having high energy impact the organic barrier layer in the process using the plasma, and at this time, the organic barrier layer is plasma resistant so that the organic barrier layer does not lose or cause defects on the metal oxide / nitride particles. Should have

Therefore, the organic barrier layer must have both flexibility suitable for a flexible OLED and resistance to plasma processing.

Plasma resistance to organic barrier layers is described in “Dry etch resistance of organic materials,” Journal of the Electrochemical Society, vol. 130, 143-146 (1983), the Ohnishi parameter represented by Equation 1 and “Limits to etch resistance for 193 nm single-layer resists,” Proceedings of SPIE, vol. 2724, 365 (1995) has been studied the correlation between the ring parameter represented by the equation (2).

[Equation 1]

Ohnishi parameter = N _T / (N _C -N _O )

Where N _T is the total number of atoms in the molecule, N _C is the number of carbon atoms, N _O is the number of oxygen atoms, and the Ohnishi parameter represents the basic tendency of polymer etching, and most polymers are known to follow the trend well. . Since then, the researchers have made many modifications based on Ohnishi's model, for example, by combining ring parameters with carbon and oxygen content to improve prediction accuracy. These modifications are suitable for experimental data rather than mathematical ones, but lack a description of the physical meaning. “Plasma etch properties of organic BARCs” Proc. of SPIE Vol. 6923, 69232G, (2008). Here, the ring parameter is described as a limited model that is applied to a polymer containing an aromatic ring.

In the literature, the Ohnishi parameter and etch rate (etch ratio) study results indicate that the etch rate using O ₂ , CF ₄ , and N ₂ / H ₂ for polymers consisting of carbon, oxygen, and hydrogen is in the range of 2 to 7 It is reported that the larger the value, the more linear the result is. That is, the low Ohnishi parameter value can be interpreted as having high plasma resistance under the conditions using the above gas.

[Equation 2]

Ring parameter = M.W. of only aromatic carbon / M.W. total

In the US Patent No. 7767498, the more organic pairs of inorganic and inorganic barrier layers, the more advantageous the barrier property of water and oxygen. However, the barrier properties due to the incorporation of foreign matters are subjected to several deposition processes under vacuum conditions. Along with the decrease, a decrease in the yield is reported as a disadvantage.

In recent years, research has been conducted to increase the thickness of organic / inorganic barrier layers and to reduce the number of layers in the thin film multilayer structure to overcome the yield drop while maintaining the barrier properties. This is because reducing the number of processes reduces the number of processes, which can reduce manufacturing costs while overcoming deterioration of properties and yields due to foreign material mixing.

Accordingly, the present invention provides a UV-curable encapsulant composition that can form a thick film and has flexibility and plasma resistance during film formation while conforming to a display development direction converted from a rigid display to a flexible OLED.

It is an object of the present invention to provide a composition for encapsulation that has plasma resistance and is suitable for vapor deposition and inkjet processes.

Another object of the present invention is to provide a composition for encapsulation capable of forming a thick film and having flexibility.

Still another object of the present invention is to provide a sealing composition capable of forming a barrier layer for encapsulation of an environment sensitive device member.

The composition for encapsulation of the present invention may include a photocuring monomer and an initiator of the formula (1).

The present invention also provides an organic electric device using the compound having the above formula and a terminal including the organic electric device.

By using the composition for encapsulation of the present invention, the adhesion to the inorganic barrier layer after curing of the encapsulation composition is increased to prevent moisture and oxygen from permeating from the outside, thereby improving the reliability of the device member.

1 is an exemplary view of an organic electroluminescent device according to an embodiment of the present invention.

2 is a view schematically showing an example of the structure of an electronic device including an organic electroluminescent element.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

As used in this specification and the appended claims, unless otherwise indicated, the meanings of the following terms are as follows.

The term "halo" or "halogen" as used herein is fluorine (F), bromine (Br), chlorine (Cl) or iodine (I) unless otherwise indicated.

As used herein, the term "alkyl" or "alkyl group" has a single bond of 1 to 60 carbon atoms, unless otherwise indicated, and is a straight chain alkyl group, branched chain alkyl group, cycloalkyl (alicyclic) group, alkyl-substituted cyclo Radicals of saturated aliphatic functional groups, including alkyl groups, cycloalkyl-substituted alkyl groups.

As used herein, the term "haloalkyl group" or "halogenalkyl group" means an alkyl group substituted with halogen unless otherwise specified.

As used herein, the term "heteroalkyl group" means that at least one of the carbon atoms constituting the alkyl group has been replaced with a heteroatom.

As used herein, the term "alkenyl group" or "alkynyl group", unless stated otherwise, has a double or triple bond of 2 to 60 carbon atoms, and includes a straight or branched chain group, and is not limited thereto. It is not.

The term "cycloalkyl" as used herein, unless otherwise stated, refers to alkyl forming a ring having 3 to 60 carbon atoms, without being limited thereto.

As used herein, the term "alkoxyl group", "alkoxy group", or "alkyloxy group" means an alkyl group to which an oxygen radical is attached, and unless otherwise specified, has a carbon number of 1 to 60, and is limited herein. It is not.

As used herein, the term "alkenoxyl group", "alkenoxy group", "alkenyloxyl group", or "alkenyloxy group" means an alkenyl group to which an oxygen radical is attached, and unless otherwise stated, it is 2 to 60 It has carbon number of, It is not limited to this.

As used herein, the term "aryloxyl group" or "aryloxy group" means an aryl group to which an oxygen radical is attached, and unless otherwise specified, has a carbon number of 6 to 60, but is not limited thereto.

As used herein, the terms "aryl group" and "arylene group" have a carbon number of 6 to 60 unless otherwise stated, but is not limited thereto. In the present invention, an aryl group or an arylene group means an aromatic of a single ring or multiple rings, and includes an aromatic ring formed by neighboring substituents participating in a bond or a reaction. For example, the aryl group may be a phenyl group, biphenyl group, terphenyl group, naphthyl group, anthracenyl group, fluorene group, spirofluorene group, spirobifluorene group.

The prefix "aryl" or "ar" means a radical substituted with an aryl group. For example, an arylalkyl group is an alkyl group substituted with an aryl group, an arylalkenyl group is an alkenyl group substituted with an aryl group, and the radical substituted with an aryl group has the carbon number described herein.

Also, when prefixes are named consecutively, it means that the substituents are listed in the order described first. For example, an arylalkoxy group means an alkoxy group substituted with an aryl group, an alkoxylcarbonyl group means a carbonyl group substituted with an alkoxyl group, and an arylcarbonylalkenyl group means an alkenyl group substituted with an arylcarbonyl group. Wherein the arylcarbonyl group is a carbonyl group substituted with an aryl group.

As used herein, the term “heteroalkyl” means an alkyl including one or more heteroatoms unless otherwise indicated. As used herein, the term "heteroaryl group" or "heteroarylene group" means an aryl group or arylene group having 2 to 60 carbon atoms, each containing one or more heteroatoms, unless otherwise specified. It may include at least one of a single ring and multiple rings, and may be formed by combining adjacent functional groups.

As used herein, the term “heterocyclic group” includes one or more heteroatoms, unless otherwise indicated, and has from 2 to 60 carbon atoms, and includes at least one of single and multiple rings, heteroaliphatic rings and hetero Aromatic rings. Adjacent functional groups may be formed in combination.

The term "heteroatom" as used herein refers to N, O, S, P or Si unless otherwise stated.

In addition, a "heterocyclic group" may also include a ring containing SO 2 in place of the carbon forming the ring. For example, a "heterocyclic group" includes the following compounds.

Unless otherwise stated, the term "aliphatic" as used herein means an aliphatic hydrocarbon having 1 to 60 carbon atoms, and the "aliphatic ring" means an aliphatic hydrocarbon ring having 3 to 60 carbon atoms.

Unless otherwise stated, the term "ring" as used herein refers to a fused ring consisting of an aliphatic ring having 3 to 60 carbon atoms or an aromatic ring having 6 to 60 carbon atoms or a hetero ring having 2 to 60 carbon atoms or a combination thereof. Saturated or unsaturated rings.

Other heterocompounds or heteroradicals other than the aforementioned heterocompounds include, but are not limited to, one or more heteroatoms.

Unless otherwise stated, the term "carbonyl" used in the present invention is represented by -COR ', wherein R' is hydrogen, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, and 3 to 30 carbon atoms. Cycloalkyl group, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or a combination thereof.

Unless otherwise specified, the term "ether" as used herein is represented by -RO-R ', wherein R or R' are each independently of each other hydrogen, an alkyl group having 1 to 20 carbon atoms, It is an aryl group, a C3-C30 cycloalkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, or a combination thereof.

Also, unless stated otherwise, the term "substituted" in the term "substituted or unsubstituted" as used in the present invention is deuterium, halogen, amino group, nitrile group, nitro group, C ₁ ~ C ₂₀ alkyl group, C ₁ ~ C ₂₀ alkoxyl group, C ₁ ~ C ₂₀ alkylamine group, C ₁ ~ C ₂₀ alkylthiophene group, C ₆ ~ C ₂₀ arylthiophene group, C ₂ ~ C ₂₀ alkenyl group, C ₂ ~ C ₂₀ alkynyl, C ₃ ~ C ₂₀ cycloalkyl group, C ₆ ~ C ₂₀ aryl group, of a C ₆ ~ C ₂₀ substituted by deuterium aryl group, a C ₈ ~ C ₂₀ aryl alkenyl group, a silane group, a boron Group, germanium group, and C ₂ ~ C _{20 It} is meant to be substituted with one or more substituents selected from the group consisting of, but not limited to these substituents.

Also, unless otherwise stated, the formulas used in the present invention apply equally to the definitions of substituents based on the exponential definition of the following formula.

Herein, when a is an integer of 0, the substituent R ¹ is absent, when a is an integer of 1, one substituent R ¹ is bonded to any one of carbons forming the benzene ring, and a is an integer of 2 or 3 Are each bonded as follows, where R ¹ may be the same or different from each other, and when a is an integer from 4 to 6, it is bonded to the carbon of the benzene ring in a similar manner, while the indication of hydrogen bonded to the carbon forming the benzene ring Is omitted.

1 is an exemplary view of an encapsulated device according to an embodiment of the present invention.

Referring to FIG. 1, a compound according to the present invention includes a first electrode 120, a second electrode 180, and a first electrode 110 and a second electrode 180 formed on a substrate 110. An organic material layer is provided. In this case, the first electrode 120 may be an anode (anode), the second electrode 180 may be a cathode (cathode), and in the case of an inverted type, the first electrode may be a cathode and the second electrode may be an anode.

The organic layer may include a hole injection layer 130, a hole transport layer 140, a light emitting layer 150, an electron transport layer 160, and an electron injection layer 170 on the first electrode 120 in sequence. At this time, the remaining layers except for the light emitting layer 150 may not be formed. The hole blocking layer, the electron blocking layer, the light emitting auxiliary layer 151, the buffer layer 141 may be further included, and the electron transport layer 160 may serve as the hole blocking layer.

In addition, although not shown, the organic electroluminescent device 200 according to the present invention includes a protective layer or a light efficiency improving layer formed on one surface of the at least one surface of the first electrode 120 and the second electrode 180 opposite to the organic material layer ( Capping layer) may be further included.

The organic electroluminescent device 200 according to an embodiment of the present invention may be manufactured using a physical vapor deposition (PVD) method. For example, a metal or conductive metal oxide or an alloy thereof is deposited on the substrate to form the first electrode 120, and the hole injection layer 130, the hole transport layer 140, the light emitting layer 150, and the electrons are formed thereon. After forming the organic layer including the transport layer 160 and the electron injection layer 170, it can be prepared by depositing a material that can be used as the second electrode 180 thereon.

In addition, the organic material layer is a solution or solvent process (e.g., spin coating process, nozzle printing process, inkjet printing process, slot coating process, dip coating process, roll-to-roll process, doctor blading) using various polymer materials. It can be produced in fewer layers by methods such as ding process, screen printing process, or thermal transfer method. Since the organic material layer according to the present invention may be formed in various ways, the scope of the present invention is not limited by the forming method.

The organic electroluminescent device 200 according to the present invention may be a top emission type, a bottom emission type or a double-sided emission type according to the material used.

WOLED (White Organic Light Emitting Device) has the advantage that can be manufactured using the color filter technology of the existing LCD while being easy to realize high resolution and excellent processability. Various structures for white organic light emitting devices mainly used as backlight devices have been proposed and patented. Representatively, a side-by-side method in which R (Red), G (Green), and B (Blue) light emitting parts are mutually planarized, and a stacking method in which R, G, and B light emitting layers are stacked up and down. And a color conversion material (CCM) method using photo-luminescence of an inorganic phosphor by using electroluminescence by a blue (B) organic light emitting layer and light therefrom. May also be applied to these WOLEDs.

In addition, the organic electroluminescent device 200 according to the present invention may be one of an organic light emitting diode (OLED), an organic solar cell, an organic photoconductor (OPC), an organic transistor (organic TFT), a single color or a white light emitting device.

Another embodiment of the present invention may include a display device including the organic electroluminescent device 200 of the present invention described above, and an electronic device including a control unit for controlling the display device. In this case, the electronic device may be a current or future wired or wireless communication terminal, and includes all electronic devices such as a mobile communication terminal such as a mobile phone, a PDA, an electronic dictionary, a PMP, a remote controller, a navigation device, a game machine, various TVs, and various computers.

In addition, the present invention may further include an encapsulation layer 300 for protecting the organic electroluminescent device 200. Although FIG. 1 discloses a configuration in which the encapsulation layer 300 is a single layer, the present invention is not limited thereto, and the encapsulation layer 300 may be formed of multiple layers. This configuration is examined with reference to FIG. 2 as follows.

2 is a view schematically showing an example of the structure of an electronic device including an organic electroluminescent element. The electronic device disclosed in FIG. 2 includes a substrate 110, an organic electroluminescent device 200 disposed on the substrate 110, and an encapsulation layer 300 disposed on the organic electroluminescent device 200. In the electronic device according to an example, the organic light emitting diode 200 may be protected by using the encapsulation layer 300.

Meanwhile, FIG. 2 discloses an embodiment in which the encapsulation layer 300 according to the present invention consists of multiple layers including the first encapsulation layer 310 and the second encapsulation layer 320. Although FIG. 2 discloses a configuration in which the encapsulation layer 300 is two layers, the present invention may include all configurations in which the encapsulation layer 300 is two or more layers. When the encapsulation layer 300 is composed of two or more multilayers, it may include an inorganic barrier layer and an organic barrier layer. For example, when the first encapsulation layer 310 is an inorganic barrier layer, the second encapsulation layer 320 may be an organic barrier layer, and when the first encapsulation layer 310 is an organic barrier layer, the second encapsulation layer 320 may be used. ) May be an inorganic barrier layer.

In addition, as shown in Figure 2, the encapsulation layer 300 of the present invention can be disposed on the device member. Specifically, the encapsulation layer 300 may be disposed on the organic electroluminescent device 200, and more specifically, the encapsulation layer 300 may be disposed to surround the organic electroluminescent device 200. That is, the encapsulation layer 300 may be disposed in a structure that can effectively protect the organic electroluminescent device 200. At this time, the encapsulation layer 300 has an effect of improving the reliability of the electronic device by blocking moisture and oxygen in the organic electroluminescent device 200. The encapsulation composition constituting the encapsulation layer 300 may include the compound represented by the following Formula 1, thereby exhibiting the above-described effects.

Hereinafter, the compound which concerns on one aspect of this invention is demonstrated. Compound according to an aspect of the present invention is represented by the following formula (1).

In Chemical Formula 1,

1) l, m, n, o are integers from 0 to 10;

(Where l, m, n, o may be the same or different from each other, except that l + m + n + o≥1)

₂₎ R _1, R 2 independently represent hydrogen, deuterium, tritium, is one of an alkoxy group, a hydroxyl group of an alkyl group of _{C 1 -C 20, C 2 -C} 20 alkenyl group, C ₁ -C ₂₀ of each other ,

_{3) R 1 '~ R 6} ' independently represent hydrogen, deuterium, tritium, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, and one of the hydroxyl groups of each other;

4) X ₁ , X ₂ are the same as or different from each other, and are one of O, S, and NR ′;

(Most preferably O)

5) R 'is one of hydrogen, deuterium, an alkyl group of C ₁ -C ₁₀ , an aryl group of C ₆ -C ₂₄ , an alkenyl group of C ₂ -C ₂₀ ;

6) Y ₁ , Y ₂ are the same as or different from each other, an alkylene group of C ₁ -C ₂₀ , an arylene group of C ₆ -C _24, an arylalkylene group of C ₇ -C ₂₄ , and an alkyl of C ₁ -C ₂₀ It may be one of the lenoxy groups.

R ₁ , R ₂ , R ₁ 'to R ₆ ', X ₁ , X ₂ , R ', Y ₁ , Y ₂ is an alkyl group, alkenyl group, alkoxy group, hydroxy group, aryl group, alkenyl group, alkylene group , Arylene group, arylalkylene group, alkyleneoxy group, each of these is deuterium; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C ₁ -C _20; An alkoxyl group of C ₁ -C ₂₀ ; An alkyl group of C ₁ -C ₂₀ ; Alkenyl groups of C ₂ -C ₂₀ ; An alkynyl group of C ₂ -C ₂₀ ; Aryl group of C ₆ -C ₂₀ ; C ₆ -C ₂₀ aryl group substituted with deuterium; Fluorenyl groups; C ₂ -C ₂₀ heterocyclic group including at least one heteroatom selected from the group consisting of O, N, S, Si and P; A cycloalkyl group of C ₃ -C ₂₀ ; C ₇ -C ₂₀ arylalkyl group; And it may be further substituted with one or more substituents selected from the group consisting of C ₈ -C ₂₀ arylalkenyl group, and when these substituents are adjacent to each other they may combine with each other to form a ring.

Here, in the case of the aryl group, the carbon number may be 6 to 24, preferably 6 to 20 carbon atoms, more preferably 6 to 12 carbon atoms, and in the case of the heterocyclic group, the carbon number is 2 to 20, preferably 2 carbon atoms. ~ 18, more preferably a hetero ring having 2 to 12 carbon atoms, in the case of the alkyl group is 1 to 50 carbon atoms, preferably 1 to 20 carbon atoms, more preferably 1 to 15 carbon atoms, particularly preferably It may be an alkyl group of 1 to 10.

In the case of the aforementioned aryl group or arylene group, specifically, the aryl group or arylene group is independently of each other a phenyl group, biphenyl group, terphenyl group, naphthyl group, phenanthryl group or phenylene group, biphenylene group, terphenylene group, naphthyl Or a phenanthrene group or the like.

More specifically, the compound represented by Formula 1 may be any one of the following compounds, but the compound represented by Formula 1 is not limited to the following compound.

In Chemical Formulas 2 to 7,

l, m, n, o, R ₁ , R ₂ , R ₁ '~ R ₆ ', X ₁ , X ₂ , R ', Y ₁ , Y ₂ are l, m, n, o defined in Formula 1 , R ₁ , R ₂ , R ₁ '~ R ₆ ', X ₁ , X ₂ , R ', Y ₁ , Y ₂ are the same.

More specifically, the compound represented by Formula 1 may be any one of the following compounds, and the compound represented by Formula 1 is not limited to the following compound.

On the other hand, the composition for encapsulation using the formula (1) of the present invention can form an organic barrier layer located between the inorganic barrier layer for encapsulation or encapsulation of the flexible display device, more specifically, the organic barrier layer It may include a compound represented by the individual formulas P1-1 to P1-40. The organic barrier layer can be formed by photocuring the composition for sealing. The encapsulation composition (organic barrier layer material) may be applied using methods such as vapor deposition, spin coating, and slit coating, and an initiator may be used during photocuring. For example, the composition for encapsulation may be 70 to 80% by weight of Formula 1 of the present invention, and 0.1 to 20% of an initiator based on solids. However, this is merely an example and the present invention is not limited thereto.

On the other hand, the initiator may include without limitation a conventional photopolymerization initiator capable of carrying out the photocurable reaction. For example, the photopolymerization initiator may include a triazine, acetophenone, benzophenone, thioxanthone, benzoin, phosphorus, oxime or mixtures thereof.

Triazines include 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (3 ', 4'-dimethoxy sty Reyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (4'-methoxy naphthyl) -4,6-bis (trichloromethyl) -s-triazine, 2- ( p-methoxy phenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2-r Phenyl-4,6-bis (trichloromethyl) -s-triazine, bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphtho-1-yl) -4,6- Bis (trichloro methyl) -s-triazine, 2- (4-methoxy naphtho-1-yl) -4,6-bis (trichloro methyl) -s-triazine, 2,4-trichloro methyl (Piperonyl) -6-triazine, 2,4- (trichloro methyl (4'-methoxy styryl) -6-triazine or mixtures thereof.

As an acetophenone type, 2,2'- diethoxy acetophenone, 2,2'- dibutoxy acetophenone, 2-hydroxy-2-methyl propiophenone, pt-butyl trichloro acetophenone, pt-butyl dichloro Acetophenone, 4-chloroacetophenone, 2,2'-dichloro-4-phenoxy acetophenone, 2-methyl-1- (4- (methylthio) phenyl) -2-morpholino propane-1-one, 2-benzyl-2-dimethyl amino-1- (4-morpholino phenyl) -butan-1-one, or mixtures thereof.

Examples of benzophenones include benzophenone, benzoyl benzoic acid, benzoyl benzoic acid methyl, 4-phenyl benzophenone, hydroxy benzophenone, acrylated benzophenone, 4,4'-bis (dimethyl amino) benzophenone, and 4,4'-dichloro benzo Phenone, 3,3'-dimethyl-2-methoxy benzophenone or mixtures thereof.

Thioxanthones include thioxanthone, 2-methyl thioxanthone, isopropyl thioxanthone, 2,4-diethyl thioxanthone, 2,4-diisopropyl thioxanthone, 2-chloro thioxanthone or Mixtures thereof.

The benzoin system may be benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyl dimethyl ketal or mixtures thereof.

Phosphorus-based may be bisbenzoylphenyl phosphine oxide, benzoyldiphenyl phosphine oxide or mixtures thereof.

Examples of oximes include 2- (o-benzoyloxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione and 1- (o-acetyloxime) -1- [9-ethyl-6- ( 2-methylbenzoyl) -9H-carbazol-3-yl] ethanone, or mixtures thereof.

The initiator may be included in 0.1-20% by weight, preferably 0.5-20% by weight, more preferably 0.5-10% by weight, most preferably 0.5-7% by weight of the composition on a solids basis. Within this range, photopolymerization can occur sufficiently during exposure, and the transmittance can be prevented from being lowered due to the unreacted initiator remaining after the photopolymerization.

In the case of the light transmittance, the light transmittance in the visible light region (380 to 780 nm) may be 85% or more, preferably 90% or more, and more preferably 94% or more. Formation of the organic barrier layer using a photocuring coating the composition for encapsulation 0.1 ~ 20 ㎛ 1 ~ 15 ㎛ most preferably 1 ~ 10 ㎛ and irradiated for 1 second ~ 60 seconds at 10 ~ 500 ㎽ / ㎠ It can be cured. In this case, the curing rate may be 90% or more, and preferably 93% or more. In this case, the composition and the initiator that do not participate in the photocuring reaction in the organic barrier layer may be minimized, and pass-way of moisture and / or oxygen may be suppressed to have good barrier properties.

In addition, when curing the encapsulation composition (when forming the organic barrier layer), the coating composition for encapsulation may occur, the shrinkage is about 1 to 20%, more preferably 1 to 15 Can be%. When the shrinkage rate of the organic barrier layer is 20% or more, dark spots and pixel shrinkage occur due to oxygen and / or moisture infiltration into the inorganic barrier layer, and an organic-inorganic body forming two or more layers. When the multilayer barrier layer is formed, warpage may occur, which may lead to coupling of the light emitting devices.

The inorganic barrier layer and the organic barrier layer may be deposited by sputtering, chemical vapor deposition (CVD), plasma chemical vapor deposition (PECVD), evaporation, sublimation, inkjet, and combinations thereof. The multilayer barrier layer includes the organic barrier layer and the inorganic barrier layer, but may be deposited alternately, the number of barrier layers is not limited and the number of barrier layers is permeable to oxygen and / or moisture and / or chemicals. Can change according to level. The organic barrier layer and the inorganic barrier layer may be alternately deposited in two or more layers and 10 or less layers, respectively, preferably, two or more layers and seven or less layers.

That is, the encapsulation layer according to the present invention may be disposed on a device member of an electronic device including an organic electroluminescent device, and may be formed of a multilayer barrier layer including an inorganic barrier layer and an organic barrier layer. Here, the inorganic barrier layer includes a metal, a metal oxide, a metal nitride, a metal carbide, a metal oxynitride, a metal oxyboride, or a mixture thereof, and the metal includes silicon (Si), aluminum (Al), and selenium (Se). ), Zinc (Zn), antimony (Sb), indium (In), germanium (Ge), tin (Sn), bismuth (Bi), a transition metal, may include one or more of a lanthanide metal.

In another embodiment, the encapsulation composition of the present invention may contain the compound alone, the compound may be contained in two or more different combinations, or the compound may be contained in two or more combinations with other compounds. In other words, the encapsulation composition may include a compound corresponding to Formula 1 alone, a mixture of two or more compounds of Formula 1, and the compounds of Claims 1 to 3 and 9 to 10 and And mixtures with compounds which do not correspond to the present invention. Herein, the compound not corresponding to the present invention may be a single compound or two or more compounds. In this case, when the compound is contained in a combination of two or more kinds of other compounds, the other compound may be a known compound of each organic material layer, or a compound to be developed in the future. In this case, the compound contained in the organic material layer may be made of only the same kind of compound, but may be a mixture of two or more kinds of the compound represented by the formula (1).

On the other hand, when the encapsulation composition includes two or more different compounds of the compound represented by the formula (1), at least one of two or more different compounds of the formula (1) is l, m = 0 and o, n = 1 or more , Or l, m = 1 or more, and n, o = 0.

In addition, when the encapsulation composition includes two or more different compounds from among the compounds represented by Formula 1, at least one of two or more different compounds of Formula 1 may be 1, m, o, n = 1 or more.

Meanwhile, in the encapsulation composition according to the present invention, one or more compounds of Formula 1 and a compound represented by Formula 8 may be mixed with each other, and Formula 8 is as follows.

In Chemical Formula 8,

1) P is an integer from 1 to 20;

2) R ₅ ', R ₆ ', R ₇ 'is any one of hydrogen, deuterium, tritium, C ₁ -C ₃₀ alkyl group, C ₁ -C ₂₀ alkoxy group, hydroxy group,

3) Y ₁ , Y ₂ , X ₁ , X ₂ , R ₁ , R ₂ are the same as in the general formula (1).

R ₁ , R ₂ , R ₅ 'to R ₇ ', X ₁ , X ₂ , Y ₁ , Y ₂ is an alkyl group, alkenyl group, alkoxy group, hydroxy group, alkenyl group, alkylene group, arylene group, arylalkyl In the case of an ethylene group and an alkyleneoxy group, each of these is deuterium; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C ₁ -C _20; An alkoxyl group of C ₁ -C ₂₀ ; An alkyl group of C ₁ -C ₂₀ ; Alkenyl groups of C ₂ -C ₂₀ ; An alkynyl group of C ₂ -C ₂₀ ; Aryl group of C ₆ -C ₂₀ ; C ₆ -C ₂₀ aryl group substituted with deuterium; Fluorenyl groups; C ₂ -C ₂₀ heterocyclic group including at least one heteroatom selected from the group consisting of O, N, S, Si and P; A cycloalkyl group of C ₃ -C ₂₀ ; C ₇ -C ₂₀ arylalkyl group; And it may be further substituted with one or more substituents selected from the group consisting of C ₈ -C ₂₀ arylalkenyl group, and when these substituents are adjacent to each other they may combine with each other to form a ring.

Here, in the case of the aryl group, the carbon number may be 6 to 24, preferably 6 to 20 carbon atoms, more preferably 6 to 12 carbon atoms, and in the case of the heterocyclic group, the carbon number is 2 to 20, preferably 2 carbon atoms. ~ 18, more preferably a hetero ring having 2 to 12 carbon atoms, in the case of the alkyl group is 1 to 50 carbon atoms, preferably 1 to 20 carbon atoms, more preferably 1 to 15 carbon atoms, particularly preferably It may be an alkyl group of 1 to 10.

In the case of the aforementioned aryl group or arylene group, specifically, the aryl group or arylene group is independently of each other a phenyl group, biphenyl group, terphenyl group, naphthyl group, phenanthryl group or phenylene group, biphenylene group, terphenylene group, naphthyl Or a phenanthrene group or the like.

More specifically, the compound represented by Formula 8 may be any one of the following compounds, but the compound represented by Formula 8 is not limited to the following compound.

On the other hand, when Formula 1 is two or more, Formula 1 in the composition is 50 to 95% by weight (based on the solid content of the total weight of the compounds of the two kinds of directors), Formula 8 is 1 to 40% by weight and the initiator is 0.1 ~ It may comprise 20% by weight. However, this is merely an example and the present invention is not limited thereto.

Hereinafter, the synthesis examples of the compound represented by Formula 1 according to the present invention and the production examples of the organic electroluminescent device will be described in detail with reference to Examples, but the present invention is not limited to the following Examples.

Synthesis Example

(Final products) according to the present invention is synthesized by the following scheme, but is not limited thereto.

Synthesis examples of specific compounds are as follows.

1. Synthesis Example of P1-14

Starting material 1,3-bis (2-bromoethoxy) benzene (84.92g, 262.10 mmol) and Acrylic acid (37.77g, 524.20 mmol) were dissolved in Acetonitrile (900ml) in a round bottom flask, followed by Triethylamine (79.57g, 786.30 mmol) was added and stirred at 80 ° C. After the reaction was completed, the mixture was extracted with Ethyl acetate and water, and the organic layer was extracted with MgSO _4. Dry and concentrate. The concentrated compound was purified by silica gel column to give 6 g (yield: 64%) of the product. The starting material is commercially available and the CAS number is 58929-74-1.

2, P2-17 synthesis example

Round bottom flask with starting material 1- (2-bromoethoxy) -3- (2- (2- (2-bromoethoxy) ethoxy) ethoxy) benzene (10.00g, 24.26 mmol) and acrylic acid (3.49g, 48.52mmol) After dissolving in Acetonitrile (120 ml), Triethylamine (7.36 g, 72.78 mmol) was obtained using the P1-14 synthesis method to obtain 4.97 g (52% yield) of the product.

3. Synthesis Example of P1-22

Starting material 1,3-bis (bromomethyl) benzene (10.00g, 37.89 mmol) and acrylic acid (5.46g, 75.77mmol) were dissolved in Acetonitrile (190ml) in a round bottom flask and then triethylamine (11.50g, 113.66 mmol) 6g (yield 64%) of product was obtained using the above P1-14 synthesis. The starting material is commercially available and the CAS number is 626-15-3.

4. Synthesis Example of P1-23

Starting material 1,3-bis (2-bromoethyl) benzene (10.00g, 34.48 mmol) and acrylic acid (4.96, 68.96mmol) were dissolved in Acetonitrile (170ml) in a round bottom flask, followed by Triethylamine (10.45g, 103.44 mmol 6.56 g (yield 70%) of the product was obtained using the above P1-14 synthesis method. The starting material is commercially available and the CAS number is 103199-07-1.

5. Synthesis Example of P1-25

Starting material 1,3-bis (3-bromohexyl) benzene (10.00g, 24.73 mmol) and acrylic acid (3.56g, 49.46mmol) were dissolved in Acetonitrile (120ml) in a round bottom flask and then triethylamine (7.49g, 74.19 mmol) was obtained using the above P1-14 synthesis to give 6.78 g (71% yield) of the product.

6. Synthesis Example of P1-37

Starting material 4,4 '-(1,3-phenylenebis (oxy)) bis (1-bromobutan-2-ol) (10.00 g, 24.26 mmol) and acrylic acid (3.49 g, 48.52 mmol) were added to a round bottom flask. After dissolving in acetonitrile (120 ml), Triethylamine (7.35 g, 72.78 mmol) was obtained using the P1-14 synthesis method to obtain 8.50 g (89% yield) of the product.

7. Synthesis Example of P1-39

Round bottom flask with starting material 1,3-bis (2- (6-bromonaphthalen-2-yl) ethyl) benzene (10.00 g, 18.37 mmol) and prop-2-enethioic S-acid (3.23 g, 36.74 mmol) After dissolving in Acetonitrile (100 ml), Triethylamine (5.56 g, 55.11 mmol) was obtained by using the above P1-14 synthesis to give 6.67 g (65% yield) of the product.

8. Synthesis Example of P2-3

Starting material 1,5-dibromopentane (10.00 g, 43.48 mmol) and acrylic acid (6.26 g, 86.96 mmol) were dissolved in Acetonitrile (220 ml) in a round bottom flask, and then triethylamine (13.19 g, 130.44 mmol) was added to the P1- Using the 14 synthesis method, 5.62 g (61%) of product was obtained. The starting material is commercially available and the CAS number is 111-24-0.

9. Synthesis Example of P2-6

Starting material 1,12-dibromododecane (10.00g, 30.47 mmol) and acrylic acid (4.39g, 60.94mmol) were dissolved in Acetonitrile (150ml) in a round bottom flask, and then triethylamine (9.24g, 91.41 mmol) was added to the P1- Using the 14 synthesis method, 8.04 g (85% yield) of the product was obtained. The starting material is commercially available and the CAS number is 3344-70-5.

10.P2-8 Synthesis Example

Starting material 3,10-dibromododecane (10.00 g, 30.47 mmol) and acrylic acid (4.39 g, 60.94 mmol) were dissolved in Acetonitrile (150 ml) in a round bottom flask, and then triethylamine (9.24 g, 91.41 mmol) was added to the P1- 14 synthetic methods were used to obtain 4.81 g (51%) of product.

11. Synthesis Example of P2-9

Starting material 2,6-dibromoheptane (10.00 g, 38.75 mmol) and prop-2-enethioic S-acid (6.82 g, 77.50 mmol) were dissolved in Acetonitrile (190 ml) in a round bottom flask, followed by Triethylamine (11.74 g, 116.25). mmol) was obtained using the above synthesis method of P1-14 to obtain 7.70 g (73% yield) of the product. The starting material is commercially available and the CAS number is 61485-85-6.

12.P2-16 Synthesis Example

Starting material 1,3-dibromo-2-propoxypropane (10.00 g, 38.46 mmol) and acrylic acid (5.54 g, 76.93 mmol) were dissolved in Acetonitrile (190 ml) in a round bottom flask, followed by Triethylamine (11.65 g, 115.38 mmol). 6.52 g (70% yield) of the product was obtained using the above P1-14 synthesis. The starting material is commercially available and the CAS number is 859775-70-5.

13. Synthesis Example of P2-17

Starting material 1,3-bis (3-bromophenyl) propane (10.00g, 28.24 mmol) and acrylic acid (4.06g, 56.48mmol) were dissolved in Acetonitrile (140ml) in a round bottom flask, followed by Triethylamine (8.57g, 84.72 mmol) was obtained using the above P1-14 synthesis to give 6.64 g (70% yield) of the product. The starting material is commercially available and the CAS number is 121733-14-0.

On the other hand, in the above synthesis examples of the present invention represented by the formula (1) and formula (8) is Org. Lett. , 2009, 11 (20), 4708-4711, J. Org . Chem . , 2001, 66 (7), 2291-2295, Org. Lett. , 2005, 7 (7), 1295-1298, J. Org . Chem . , 2008, 73 (19), 7772-7774, Organometallics 2002, 21 (26), 5713-5725, J. Org . Chem . , 2011, 76 (7), 2187-2194, J. Am. Chem . Soc . , 2009, 131 (5), 1766-1774 and the like, in addition to the substituents specified in the specific synthesis examples, other substituents defined in Formula 1 and Formula 8 (R ₁ , R ₂ , R ₁ 'to R ₇ ', R ', X _It will be readily understood by those skilled in the art that the reaction proceeds even though ₁ , X ₂ , Y ₁ , Y ₂ ) are combined.

Evaluation of Production of Encapsulation Composition

[ Example Preparation of Mixed Composition

The composition of the present invention was prepared by mixing a mixture of Chemical Formulas 1 (P1-1 to P1-40) and Chemical Formulas 8 (P2-1 to P2-21) and an initiator Darocur TPO as shown in Table 1 below. At this time, the initiator Darocur TPO uses 3% by weight. (The total weight of the total mixture composition is 100%.) The initiator is diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide, Darocur TPO) It is a substance which has a following formula.

Comparative Example 1 was prepared by mixing Darocur TPO as an initiator in the mixture of the compound of the present invention and the comparative compound or a mixture between the comparative compounds as shown in Table 1. At this time, the initiator Darocur TPO uses 3% by weight. (The total weight of the total mixture composition is 100%.) Specifically, the compounds used in Comparative Examples are Comparative Compounds 1 to 3, and Comparative Compounds 1 to 3 are each trimethylolpropane triacrylate (trimetholpropane). Triacrylate), Dipentaerythritol Hexaacrylate (dipentaerythritol hexaacrylate, Miramer M600), and Poly (ethylene glycol) diacrylate (polyethylene glycol diacrylate, Miramer M284) are substances having the following formula.

  [Comparative Compound 1] [Comparative Compound 2] [Comparative Compound 3]

The mixed composition was mixed to the content (based on weight) shown in Table 1 below, and stirred for 3 hours to prepare a composition for encapsulation.

P1-4 P1-22 P2-5 P2-11 P2-20 P2-21 Comparative Compound 1 Comparative Compound 2 Comparative Compound 3 Example 1 80% 17% Example 2 80% 17% Example 3 80% 17% Example 4 80% 17% Example 5 80% 10% 7% Comparative Example 1 80% 17% Comparative Example 2 80% 17% Comparative Example 3 80% 17% Comparative Example 4 17% 80% Comparative Example 5 80% 10% 7%

According to the content of Table 1, the cured shrinkage, photocurability, and light transmittance of the mixed composition were measured in the same manner as described below, and the results are shown in Table 2 below.

1. Curing Shrinkage

The curing shrinkage ratio was calculated by measuring the specific gravity of the liquid composition before photocuring and the specific gravity of the solid after curing with a digital solid hydrometer DME-220E (Shinko Co., Japan). After coating the composition to about 10um ± 2um UV cured (100mW / ㎠ x 10 seconds) to produce a film (thickness: 8-12um, 1.5-2.5cm horizontal, 1.5-2.5cm vertical) to perform. Cure shrinkage was calculated according to the following equation (3).

[Equation 3]

 Cure Shrinkage (%) = (Solid specific gravity after curing-specific gravity of liquid composition before curing) / Specific gravity of liquid composition before curing × 100

2. Photocuring rate

Near 1635cm ^-1 (C = C), 1720cm using FT-IR (FT / IR- 6600, Jasco , Inc.) with respect to the photocurable composition ^- the intensity of the absorption peak in the vicinity of ¹ (C = O) was measured. The photocurable composition was sprayed onto the glass substrate and irradiated with 100J / cm ² for 10 seconds to UV cured to obtain a 20 cm x 20 cm x 3 μm (horizontal x vertical x thick) specimen, followed by FT-IR (NICOLET 4700, Thermo). G) was used to measure the intensity of absorption peaks in the vicinity of 1635 cm ^-1 (C = C) and in the vicinity of 1720 cm ^-1 (C = O). Photocuring rate was calculated according to the following equation (4).

[Equation 4]

Photocuring rate (%) = | 1- (A / B) | x 100

(A above, A is the ratio of the intensity of the absorption peak in the vicinity of 1635 cm ⁻¹ to the intensity of the absorption peak in the vicinity of 1720 cm ⁻¹ for the cured film, and B is in the vicinity of 1720 cm ⁻¹ for the photocurable composition. Ratio of the intensity of the absorption peak in the vicinity of 1635 cm ⁻¹ to the intensity of the absorption peak)

3. Light transmittance

The encapsulation composition was UV cured to prepare a film having a thickness of 10 μm, and the light transmittance was measured at a wavelength of 550 nm in the visible region with Lambda950 (Perkin Elmer).

Cure Shrinkage (%) Light curing rate (%) Light transmittance (%) Ohnishi parameter Example 1 12.1 96 94.5 3.47 Example 2 14.8 91 94.7 3.21 Example 3 9.8 95 93.5 3.44 Example 4 13.4 93 94.1 3.18 Example 5 9.7 97 96.2 3.41 Comparative Example 1 21.4 88 89.5 4.17 Comparative Example 2 22.2 79 90.7 3.97 Comparative Example 3 19.9 83 90.1 4.25 Comparative Example 4 18.7 86 91.2 5.69 Comparative Example 5 23.2 91 91.5 4.21

As a result of checking Table 2, Examples 1 to 5, which are compositions containing the compounds of the present invention, had a low shrinkage rate and a high photocuring rate, and confirmed excellent results in light transmittance. In addition, it was confirmed that the plasma resistance was high through the calculated Ohnishi parameter value.

This can be explained by the correlation between each rate and the Ohnishi parameter. The higher the Ohnishi parameter value is in the range of 2 to 7, the faster the etch rate. This is because the plasma resistance is lowered at.

Example 1 to Example 5 using the composition of the compound of the present invention shows a smaller Ohnishi parameter value than Comparative Examples 1 to 5, which is more a composition of the compound of the present invention than the comparative example It has been shown to have high plasma resistance.

The above description is merely illustrative of the present invention, and those skilled in the art will appreciate that various modifications can be made without departing from the essential features of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all descriptions within the equivalent scope should be construed as being included in the scope of the present invention.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority under No. 119 (a) (35 USC § 119 (a)) of the US Patent Act No. 10-2016-0040813, filed April 4, 2016, with the Republic of Korea. All content is incorporated by reference in this patent application. In addition, if this patent application claims priority for the same reason as for the above-mentioned countries, all the contents are incorporated into this patent application by reference.

Claims (14)

An encapsulation composition for an organic electroluminescent device comprising at least one compound represented by Formula 1 below.

In Chemical Formula 1, 1) l, m, n, o are integers from 0 to 10; (Where l, m, n, o may be the same or different from each other, except that l + m + n + o≥1) ₂₎ R _1, R 2 independently represent hydrogen, deuterium, tritium, is one of an alkoxy group, a hydroxyl group of an alkyl group of _{C 1 -C 20, C 2 -C} 20 alkenyl group, C ₁ -C ₂₀ of each other , _{3) R 1 '~ R 6} ' independently represent hydrogen, deuterium, tritium, C ₁ -C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy group, and one of the hydroxyl groups of each other; 4) X ₁ , X ₂ are the same as or different from each other, and are one of O, S, and NR ′; 5) R 'is one of hydrogen, deuterium, an alkyl group of C ₁ -C ₁₀ , an aryl group of C ₆ -C ₂₄ , an alkenyl group of C ₂ -C ₂₀ ; 6) Y ₁ , Y ₂ are the same as or different from each other, an alkylene group of C ₁ -C ₂₀ , an arylene group of C ₆ -C _24, an arylalkylene group of C ₇ -C ₂₄ , alkyl of C ₁ -C ₂₀ It may be one of the lenoxy groups. R ₁ , R ₂ , R ₁ 'to R ₆ ', X ₁ , X ₂ , R ', Y ₁ , Y ₂ is an alkyl group, alkenyl group, alkoxy group, hydroxy group, aryl group, alkenyl group, alkylene group , Arylene group, arylalkylene group, alkyleneoxy group, each of these is deuterium; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C ₁ -C _20; An alkoxyl group of C ₁ -C ₂₀ ; An alkyl group of C ₁ -C ₂₀ ; Alkenyl groups of C ₂ -C ₂₀ ; An alkynyl group of C ₂ -C ₂₀ ; Aryl group of C ₆ -C ₂₀ ; C ₆ -C ₂₀ aryl group substituted with deuterium; Fluorenyl groups; C ₂ -C ₂₀ heterocyclic group including at least one heteroatom selected from the group consisting of O, N, S, Si and P; A cycloalkyl group of C ₃ -C ₂₀ ; C ₇ -C ₂₀ arylalkyl group; And it may be further substituted with one or more substituents selected from the group consisting of C ₈ -C ₂₀ arylalkenyl group. The method of claim 1, Formula 1 is an encapsulation composition for an organic electroluminescent device represented by the following formula (2).

In Chemical Formulas 2 to 7 l, m, n, o, R ₁ , R ₂ , R ₁ '~ R ₆ ', X ₁ , X ₂ , R ', Y ₁ , Y ₂ are l, m, n, o defined in Formula 1 , R ₁ , R ₂ , R ₁ '~ R ₆ ', X ₁ , X ₂ , R ', Y ₁ , Y ₂ are the same. The method of claim 1, Formula 1 is an organic electroluminescent device sealing composition for one of the following compounds.

The method of claim 1, The encapsulation composition is a composition for encapsulation for an organic electroluminescent device further comprising an initiator. The method of claim 4, wherein Composition for encapsulation for an organic electroluminescent device, characterized in that two or more different compounds of the compounds represented by the formula (1) are mixed. The method of claim 5, At least one of two or more different compounds of Formula 1 is l, m = 0 and o, n = 1 or more, or l, m = 1 or more, n, o = 0 is an organic electroluminescent device Composition for encapsulation. The method of claim 5, At least one of two or more different compounds of the formula (1) is l, m, o, n = 1 or more composition for encapsulation for an organic electroluminescent device, characterized in that. The method of claim 4, wherein The composition for encapsulation for an organic electroluminescent device is a composition for encapsulation for an organic electroluminescent device comprising 70 to 80% by weight of Formula 1, and 0.1 to 20% by weight of an initiator on a solids basis. The method of claim 4, wherein The composition for encapsulation for an organic electroluminescent device, characterized in that at least one compound of Formula 1 and Formula 8 are mixed with each other.

In Chemical Formula 8, 1) P is an integer from 1 to 20; 2) R ₅ ', R ₆ ', R ₇ 'is any one of hydrogen, deuterium, tritium, C ₁ -C ₃₀ alkyl group, C ₁ -C ₂₀ alkoxy group, hydroxy group, 3) Y ₁ , Y ₂ , X ₁ , X ₂ , R ₁ , R ₂ are the same as in the general formula (1). R ₁ , R ₂ , R ₅ 'to R ₇ ', X ₁ , X ₂ , Y ₁ , Y ₂ is an alkyl group, alkenyl group, alkoxy group, hydroxy group, alkenyl group, alkylene group, arylene group, arylalkyl In the case of an ethylene group and an alkyleneoxy group, each of these is deuterium; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C ₁ -C _20; An alkoxyl group of C ₁ -C ₂₀ ; An alkyl group of C ₁ -C ₂₀ ; Alkenyl groups of C ₂ -C ₂₀ ; An alkynyl group of C ₂ -C ₂₀ ; Aryl group of C ₆ -C ₂₀ ; C ₆ -C ₂₀ aryl group substituted with deuterium; Fluorenyl groups; C ₂ -C ₂₀ heterocyclic group including at least one heteroatom selected from the group consisting of O, N, S, Si and P; A cycloalkyl group of C ₃ -C ₂₀ ; C ₇ -C ₂₀ arylalkyl group; And it may be further substituted with one or more substituents selected from the group consisting of C ₈ -C ₂₀ arylalkenyl group. The method of claim 9, Formula 8 is an organic electroluminescent device encapsulation composition for one of the following compounds.

The method of claim 9, When Formula 1 is two or more kinds of Formula 1 in the composition based on solids 50 to 95% by weight (total weight of two or more compounds), Formula 8 is 1 to 40% by weight, initiator is 0.1 to 20% by weight Composition for encapsulation for an organic electroluminescent device comprising. Member for apparatus; And An encapsulated device disposed on the device member and comprising at least one organic barrier layer formed of the encapsulation composition of any one of claims 1-11. The method of claim 12, Further comprising at least one inorganic barrier layer disposed on the device member, The inorganic barrier layer includes a metal, a metal oxide, a metal nitride, a metal carbide, a metal oxynitride, a metal oxyboride, or a mixture thereof, and the metal includes silicon (Si), aluminum (Al), and selenium (Se). And at least one of zinc (Zn), antimony (Sb), indium (In), germanium (Ge), tin (Sn), bismuth (Bi), transition metals, and lanthanide metals. The method of claim 12, The encapsulated device is an encapsulated device including an organic light emitting device, an organic solar cell, an organic photosensitive member, an organic transistor, and an organic electroluminescent element which is one of a monochrome or white illumination element.

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