WO2014069930A1

WO2014069930A1 - Method for manufacturing organic light-emitting device using roll-to-roll process

Info

Publication number: WO2014069930A1
Application number: PCT/KR2013/009837
Authority: WO
Inventors: 정호균; 조덕수; 김봉성; 조성민; 유민선
Original assignee: 성균관대학교산학협력단
Priority date: 2012-11-01
Filing date: 2013-11-01
Publication date: 2014-05-08

Abstract

The method for manufacturing an organic light-emitting device (OLED) arranges the OLED and an inorganic phosphor such that at least one surface of the OLED and at least one surface of the inorganic phosphor may contact each other, and joins the OLED and the inorganic phosphor together by means of a roll-to-roll process, thus obtaining the OLED having the inorganic phosphor as a color conversion layer.

Description

Organic light emitting device manufacturing method using roll-to-roll process

The present invention relates to a method for manufacturing an organic light-emitting device (OLED) using a roll-to-roll processing.

As one of the measures to reduce the emission of greenhouse gas in the world, various efforts are being made to improve the efficiency of lighting, which accounts for about 20% of the total energy consumption. In particular, the demand for eco-friendly next-generation lighting to replace the existing incandescent and fluorescent lamps is expanding, the development of lighting using the organic light-emitting diode (Organic Light-Emitting Diode) is expanding.

The organic light emitting diode has a high response speed, high color reproducibility, and a very thin thickness as a next generation display device, and thus has many applications as a next generation display device. Among them, a white organic light-emitting diode may be used as a full color display, a backlight of a liquid crystal display, a light source of illumination, or the like.

However, in order to fabricate a display device using a conventional organic light emitting device, the process is complicated by a deposition or spin coater process in a high vacuum device, and the manufacturing cost is high and the color conversion of the display device is possible due to a long manufacturing time. It was difficult to secure the reliability of the efficiency. In addition, the conventional white organic light emitting device has a disadvantage in that the structure of the process is complicated and the manufacturing cost is high due to the use of multiple light emitting layers for mixing the three primary colors.

In this regard, Korean Patent Laid-Open Publication No. 10-2007-0033390 (name of the high performance white light emitting OLED device), which is provided on an anode and contains a first host material and a first light emitting material, wherein the first host material is one. A mixture of the above mono-anthracene derivatives and one or more aromatic amine derivatives, the no-anthracene derivatives being provided in a volume fraction range of 5% to 50% relative to the total host volume, wherein the aromatic amine derivatives range from 50% to the total host volume Disclosed is a broadband emitting OLED device comprising a first light emitting layer provided in a volume fraction range of 95% and a second light emitting layer provided above or below the first light emitting layer.

The present invention is to provide a method for manufacturing an OLED including a color conversion layer, in order to solve the above problems of the prior art.

According to an aspect of the present invention, there is provided a method of manufacturing an organic light emitting device (OLED), including: (a) providing an OLED and an inorganic phosphor to be in contact with at least one surface thereof; (b) bonding the OLED and the inorganic phosphor through roll-to-roll processing; And (c) obtaining an OLED including the inorganic phosphor as a color conversion layer.

According to any one of the problem solving means of the present invention described above, by bonding the OLED of the specific color and the inorganic phosphor through a roll-to-roll process, it is possible to easily implement the OLED having an inorganic phosphor acting as a color conversion layer.

In addition, according to any one of the problem solving means of the present invention, by bonding the inorganic phosphor and the OLED through a roll-to-roll process, the production time is shortened, thereby reducing the influence of external factors such as moisture, heat, impurities, etc., thereby improving reliability. .

In addition, according to any one of the problem solving means of the present invention, by using an inorganic phosphor having a zero dimensional particle characteristics applicable to the roll-to-roll process, there is an effect capable of large area when bonding the OLED and the inorganic phosphor.

1 is a schematic view for explaining a method of manufacturing an OLED having a color conversion layer according to an embodiment of the present invention.

2 is a view showing a roll-to-roll manufacturing equipment OLED according to another embodiment of the present invention.

3 is a schematic view illustrating a method of manufacturing a top emission OLED having a color conversion layer according to an embodiment of the present invention.

4 is a schematic view illustrating a method of manufacturing a bottom emission OLED having a color conversion layer according to an embodiment of the present invention.

5 is a flowchart for explaining an OLED manufacturing method according to an embodiment of the present invention.

6 to 8 are schematic views for explaining a method of manufacturing an OLED having a color conversion layer according to another embodiment of the present invention.

9 and 10 are schematic views for explaining a method of manufacturing an OLED having a color conversion layer according to another embodiment of the present invention.

11 and 12 are views for explaining a method of supplying a phosphor block layer on a roll according to an embodiment of the present invention.

13 to 19 are views for explaining an OLED manufacturing method according to another embodiment of the present invention.

20 and 21 illustrate a process of patterning a phosphor layer during a roll-to-roll process.

22 and 23 are views for explaining a roll-to-roll before and after treatment method.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

1 schematically shows a roll-to-roll facility 100 for manufacturing an OLED according to an embodiment of the present invention. For reference, FIG. 1 illustrates the side surfaces of the pair of

rollers

110 and 120 in the roll-to-roll installation 100, but in another embodiment of the present invention, the roll-to-roll installation 100 includes a plurality of roller pairs. It can also be configured.

For reference, in the embodiment of the present invention, 'roll-to-roll' means a process technology of OLED, and may use one or more 'rolls' or 'rolls' a specific structure constituting the OLED by using the OLED or a substrate of the OLED as a container. OLED can be completed by bonding through 'process'. Through such a roll-to-roll process, the thickness of the OLED can be controlled.

As shown in FIG. 1, the first roller 110 of the two

rollers

110 and 120 contacts the upper portion of the first substrate 210 and the second roller contacts the lower portion of the second substrate 220. , The sheet is rolled in the direction of the arrow to pressurize / heat the first substrate 210 and the second substrate 220. As a result, the first substrate 210 and the second substrate 220 are bonded to each other. For reference, in the exemplary embodiment of the present invention, 'bonding' means sole, continuous and direct bonding between the substrate of the OLED and the specific structure on the OLED, and the 'bonding' refers to the specific structure (color conversion layer, bonding layer, protective layer, Light scattering layer, lens layer, patterning layer, polarizing layer, etc.) and combinations thereof can be bonded. In this case, the bonding material is basically flexible and permeable, and may be used for bonding to a container (OLED or substrate), a specific structure layer, or a phosphor layer and a specific structure layer in a roll-to-roll process.

In detail, FIG. 1 illustrates a process of bonding the first and

second substrates

210 and 220 by rolling the first and

second rollers

110 and 120, and the portion 'A' is the first and second portions. The

substrates

210 and 220 are bonded by the rolling of the first and

second rollers

110 and 120, and the 'B' portion of the

substrates

210 and 220 is the first and second rollers. The state before joining by (110, 120) is shown.

At this time, in one embodiment of the present invention, the first and

second substrates

210 and 220 are any one of an OLED and an inorganic phosphor. That is, in one embodiment of the present invention, a hybrid organic light-emitting device (i.e., 'A' portion of FIG. 3) in which an inorganic phosphor acts as a color conversion layer by bonding an OLED and an inorganic phosphor through a roll-to-roll process ) Can be implemented.

In particular, the inorganic phosphor according to an embodiment of the present invention is a substrate having zero dimensional particle characteristics, and may be prepared with an adhesive applied to a container containing the inorganic phosphor powder. At this time, the material of the base material having a zero-dimensional particle characteristics exhibits inorganic phosphor powder and quantum dot (Quantum Dot), and has a form of fine particle powder, which is advantageous for solidification, liquefaction and vaporization, and is a general static substrate or flexible It can be used for the substrate.

For reference, in one embodiment of the present invention, 'container' may mean the substrate of the OLED and the OLED itself, and 'container' is a specific structure (color conversion layer, bonding layer, protective layer, light scattering layer, lens layer, pattern Ning layer, polarizing layer, plasmon layer, electron injection layer, electron transfer layer, light emitting layer, hole injection layer, hole transfer layer, electrode layer, transistor layer, pore layer, environmental barrier agent, environmental preservative) and combinations thereof. This 'container' is flexible and can be mounted as a roll in a roll-to-roll process.

In addition, the container in which the inorganic phosphor powder is housed is an ultra-thin container, and can accommodate the inorganic phosphor on the substrate in various ways.

Specifically, the inorganic phosphor may be produced in a form suitable for a general roll-to-roll process, for example ultra-thin transparent plastic (ie, film) or ultra-thin glass. For reference, the inorganic phosphor may be prepared in a state of being wound on the first or second rollers 110 and 120 (that is, an ultra-thin transparent plastic substrate), and from one side of the OLED according to the rolling of the two

rollers

110 and 120. It can be joined in contact in the rolling direction.

As such, by bonding the OLED and the inorganic phosphor, the OLED of a specific color (for example, blue OLED) is produced in various colors (for example, white OLED, red OLED, and green OLED, etc.) according to the particle size and structural characteristics of the inorganic phosphor. Can be converted into, and the luminance of the OLED can be increased in accordance with the change of the light extraction efficiency by the inorganic phosphor.

On the other hand, in the roll to roll facility 100 according to an embodiment of the present invention using a pair of rollers (110, 120) has been described to bond the OLED and the inorganic phosphor. However, as shown in FIG. 2, in the OLED manufacturing method according to another embodiment of the present invention, the OLED may be manufactured using the single roller 110 rather than the

double roller

110 and 120 structure as shown in FIG. 1. have.

In this case, (a) of FIG. 2 illustrates a method of manufacturing a top emission OLED through a single roller 110, and FIG. 2 (b) illustrates a method of manufacturing a bottom emission OLED. . Such an OLED manufacturing method for bonding the top emission and bottom emission OLEDs with the inorganic phosphor will be described in detail with reference to FIGS. 3 and 4. In addition, in FIG. 2, the portion where the OLED and the inorganic phosphor are bonded by rolling is represented by the OLED 220 ′ and the inorganic phosphor 210 ′, respectively, and the portions before the bonding are the OLED 220 and the inorganic phosphor 210, respectively. ).

As shown in FIG. 3, the first substrate 210 is an inorganic phosphor, and the second substrate 220 is a top-emitting OLED.

Specifically, as shown in FIG. 3, when the cross section of a portion of the first substrate 210 is enlarged (P211), the first substrate 210 (that is, the inorganic phosphor) may include an inorganic phosphor layer and an adhesive layer ( The adhesive layer is laminated. As shown in FIG. 3, an enlarged cross section of a portion of the second substrate 220 (P221), the second substrate 220 (that is, the top emission OLED) may include a barrier film layer and a cathode layer ( cathode layer, Electron Injection Layer (EIL) / Electron Transport Layer (ETL), Organic Light-Emitting Layer, Hole Injection Layer (HIL) / Hole Transport Layer (Hole) A transport layer (HTL), an anode layer, and a flexible substrate layer are stacked. At this time, in one embodiment of the present invention, the top-emitting OLED is composed of a transmissive cathode layer (for example, a transparent or semi-transparent cathode layer) and a reflective anode layer.

As such, by contacting the adhesive layer of the inorganic phosphor on the cathode layer of the top-emitting OLED and bonding in a roll-to-roll process, a top-emitting OLED having a color conversion layer can be realized.

As shown in FIG. 4, the first substrate 210 is a bottom emitting OLED, and the second substrate 220 is an inorganic phosphor.

Specifically, as shown in FIG. 4, when the cross-section of a portion of the first substrate 210 is enlarged (P211), the first substrate 210 (ie, the bottom emission OLED) may include a barrier film layer, a cathode layer, and an electron injection layer /. An electron accepting layer, an organic light emitting layer, a hole injection layer / hole transport layer, an anode layer, and a flexible substrate layer are laminated. At this time, in the embodiment of the present invention, the bottom-emitting OLED includes a reflective cathode layer and a transmissive anode layer.

As shown in FIG. 4, the enlarged cross section of a part of the second substrate 220 (P221), the second substrate 220 (that is, the inorganic phosphor) has a structure in which an adhesive layer and an inorganic phosphor layer are stacked.

As such, the back light emitting OLED having the color conversion layer may be implemented by contacting the adhesive layer of the inorganic phosphor on the anode layer of the bottom light emitting OLED by bonding in a roll-to-roll process.

3 and 4 illustrate that inorganic phosphors are positioned on the top of the top-emitting OLED or the bottom of the bottom-emitting OLED for convenience of description, and are bonded through a roll-to-roll process. However, the order and direction of the first base material 210 and the second base material 220 may be such that the pressure-sensitive adhesive layer of the inorganic phosphor contacts the cathode layer side and the anode layer side of the bottom emission OLED. can be changed.

Hereinafter, an OLED manufacturing method according to an embodiment of the present invention will be described with reference to FIG. 5.

First, an OLED produced in a form capable of a roll-to-roll process is prepared (S410).

Then, the ultra-thin inorganic phosphor of the roll-to-roll process is possible to prepare a contact with the OLED (S410).

Then, the OLED and the inorganic phosphor provided are pressurized / heated through a roll-to-roll process (S430).

An OLED having a color conversion layer (that is, an inorganic phosphor) implemented through the above process is obtained (S440).

Meanwhile, in the OLED manufacturing method using the roll-to-roll facility 100 according to another embodiment of the present invention, not only a single phosphor layer but also multiple phosphor layers (for example, a double phosphor layer) may be added / composite stacked. .

Specifically, FIGS. 6 to 8 are schematic views for explaining a method of manufacturing an OLED having a color conversion layer according to another embodiment of the present invention.

As shown in Figure 6, in the OLED manufacturing method according to another embodiment of the present invention, the following steps are performed.

First, two

phosphor layers

211 and 212 and an OLED layer 220 are prepared on the roll-to-roll facility 100. At this time, the phosphor layer and the OLED are supplemented, distributed and transported by a roller, and in this preparation step, a process of including an adhesive or bond to the phosphor layer and the OLED may be required. For reference, FIG. 6A illustrates a method of manufacturing a top emission OLED, and FIG. 6B illustrates a method of manufacturing a bottom emission OLED.

Then, the two

phosphor layers

211 and 212 and the OLED layer 220 are bonded while passing through the pair of

rollers

110 and 120. In this case, pressure and heat may be applied to the pair of

rollers

110 and 120.

As a result, an OLED 220 'bonded to two phosphor layers 211' and 212 'is obtained. As such, the step of obtaining the OLED bonded with the two phosphor layers may mean the final step or the intermediate completion step of the process, and the obtained OLED is prepared on the roller.

Meanwhile, FIG. 7 shows that the OLED is manufactured using the single roller 110 instead of the double roller in the OLED manufacturing method described with reference to FIG. 6. In this case, in FIG. 7, the second phosphor layer 211 ′ is bonded through the roll 110 while the OLED layer 220 and the first phosphor layer 212 ′ are bonded to each other. In addition, FIG. 8 shows that the second phosphor layer 211 'is bonded using the

double rollers

110 and 120 in the state in which the OLED layer 220 and the first phosphor layer 212' are bonded to each other.

In the above description, the OLED manufacturing method according to the embodiment of the present invention has been described in which a phosphor layer without a pattern is bonded to the OLED layer. However, in the OLED manufacturing method according to another embodiment of the present invention, the phosphor blocks may be selectively stacked and bonded. Can be.

Specifically, FIGS. 9 and 10 are schematic views for explaining a method of manufacturing an OLED having a color conversion layer according to another embodiment of the present invention.

As shown in Figure 9, in the OLED manufacturing method according to another embodiment of the present invention, the following steps are performed.

First, two different phosphor block layers 211 and 212 and an OLED layer 220 are prepared on the roll-to-roll facility 100. At this time, the phosphor block layer and the OLED layer are supplemented, distributed and transported by the roller 110, and different phosphor block layers have various lengths. In addition, in this preparation step, it may be necessary to include an adhesive (bond) in the phosphor layer and the OLED layer (adhesive). For reference, FIG. 9A illustrates a manufacturing method of a top emission OLED, and FIG. 9B illustrates a manufacturing method of a bottom emission OLED.

Then, different phosphor block layers 211 and 212 and the OLED layer 220 are bonded while passing through the single roller 110. At this time, one roller 110 may be bonded by applying pressure and heat.

Then, an OLED to which different phosphor block layers 211 and 212 are bonded is obtained. As such, the step of obtaining OLEDs bonded with different phosphor block layers may mean a final step or an intermediate completion step of the process, and the obtained OLEDs are prepared on a roller.

Meanwhile, FIG. 10 shows bonding different phosphor block layers 211 and 212 and OLED layers 220 through a pair of

rollers

110 and 120.

Hereinafter, referring to FIGS. 11 and 12, a roll-to-roll facility 100 that performs a rolling function for bonding a conventional phosphor layer to an OLED layer, as well as a coding and microrange alignment, will be described.

11 and 12 are views for explaining a method of supplying and manufacturing a phosphor block layer on a roll according to an embodiment of the present invention.

As shown in FIG. 11, the roll-to-roll process of supplying the phosphor block layers 211 and 212 onto a roll performs the following steps.

First, a phosphor block layer precursor is formed on a roll 130 including a mold release agent through supply and drying (P131) through a nozzle 230 for supplying at least one phosphor. At this time, the phosphor block layers 211 and 212 are replenished, distributed and transported by the pair of

rollers

111 and 112. In the distribution of the phosphor block layer, the length of the block layer may be adjusted uniformly or continuously. In addition, a process of including an adhesive or a bond in the phosphor block layer and the OLED layer may be required, and may be applied for top emission and bottom emission OLED manufacturing, respectively.

Then, the phosphor block layers 212 and 211 are repeatedly supplied onto the OLED layer 220 roll supplied by the roller, and the pressure and heat of the pair of

rollers

120 and 112 are applied on the OLED layer 220. To be bonded. This obtains OLED in which the phosphor block layer is bonded. This step of obtaining the OLED signifies the final or intermediate completion of the process and is prepared on the rollers.

On the other hand, as shown in Figure 12, another roll-to-roll process of supplying the phosphor block layer on the roll is performed as follows.

First, the phosphor block layer precursor is formed on the OLED roll through supply and drying through the nozzle 230 mounted on the roller 140 itself. At this time, the phosphor block layers 211 and 212 and the OLED layer 220 are supplemented, distributed and transported by one roller 140. In addition, a process of including an adhesive or a bond in the phosphor block layer and the OLED layer may be required, and may be applied for top emission and bottom emission OLED manufacturing, respectively.

Then, the phosphor block layers 211 and 212 are repeatedly supplied onto the roll composed of the OLED layer 220, and pressure and heat are applied through one roller 140 to bond the phosphor block layer and the OLED layer. This obtains OLED in which the phosphor block layer is bonded.

Meanwhile, in another OLED manufacturing method of the present invention, a blade may be used together with a roller.

Specifically, FIGS. 13 to 19 are views for explaining an OLED manufacturing method according to another embodiment of the present invention.

In FIG. 13, the roll-to-roll process method of cutting the OLED to which a single phosphor layer is bonded using one roller 120 and a blade 150 is illustrated.

As shown in FIG. 13, the process of cutting the OLED to which the phosphor layer is bonded and adjusting the thickness is performed in the following manner.

Through the roll-to-roll process, the OLED to which the phosphor layer 210 and the OLED layer 220 are bonded is obtained. For reference, (a) and (b) of FIG. 13 include top and bottom emission, respectively. In addition, the bonding is performed by applying pressure and heat by one roller 120.

In the roll-to-roll process above, the roll-to-roll process is performed through the roller 120 on the OLED layer 220 side and the blade 150 on the phosphor layer 110 side. Accordingly, cutting and thickness of the OLED roll to which the phosphor layer is bonded are controlled by the blade 150. In this case, the blade 150 may be height-adjustable and may be configured in various shapes to form a patterned phosphor layer. As a result, an OLED to which the cut phosphor layer 210 'is bonded is obtained. The step of obtaining such an OLED signifies the final or intermediate completion of the process and is prepared on a roller.

For reference, FIGS. 14A to 14C show examples of various blades. Such various types of blades may be applied not only to FIG. 13 but also to FIGS. 15 to 19 to be described below.

In FIG. 15, the

multiple phosphor layers

211 and 212 are bonded to the OLED layer 220 through one roller 120, and the roll-to-roll process cuts the phosphor layer 211 and adjusts the thickness through the blade 150. Indicated.

Specifically, an OLED bonded to the phosphor layers 211 and 212 of two layers is obtained through a roll-to-roll process. In the roll-to-roll process, the OLED roll having two phosphor layers bonded thereto is cut with a blade 150 and the thickness thereof is adjusted to obtain an OLED having phosphor layers bonded thereto.

13 and 15 illustrate a roll-to-roll process in which one roller 120 is bonded by applying pressure and heat at the OLED layer side.

In FIG. 16, one roller 110 is bonded by applying pressure and heat at the phosphor layer 210 side, and a blade-to-roll process of adjusting and cutting the thickness of the phosphor layer 210 using the blade 150 is illustrated. .

In addition, in FIG. 17, the phosphor layer 210 and the OLED layer 210 are bonded by applying pressure and heat through the

double rollers

110 and 120, and the blade layer is cut to form the phosphor layer 220 using a thickness. The roll-to-roll process to control the is shown.

In addition, in FIG. 18, two

different phosphor layers

211 and 212 are bonded to the OLED layer 220 using one roller 110, and the first phosphor layer 211 is cut using the blade 150. And a roll-to-roll process for adjusting the thickness. In this case, in FIG. 18, it is shown that one roller 110 and a blade 150 process respective roles at the side of the first phosphor layer 211.

Meanwhile, in FIGS. 16 to 18, the process of bonding the single phosphor layer 220 or the

double phosphor layers

211 and 212 and the OLED layer 210 through one or double rollers, the phosphor layer through the blade 150 ( Each process of the process of cutting 210, 211, and 212 corresponds to the steps of the roll-to-roll process described with reference to FIGS. 13 and 15, and thus detailed description thereof will be omitted.

19 shows a process of bonding the microrange layer to the OLED roll after the thickness control and shape molding of the phosphor layer through the blade during the roll-to-roll process.

The roll-to-roll process shown in FIG. 19 performs the following steps.

First, the phosphor layer 210 and the OLED layer 220 are prepared. In this preparation step, the phosphor layer 210 and the OLED layer 220 are replenished, distributed and transported by rollers. In addition, the present invention may be applied to manufacture top emission and bottom emission OLEDs, respectively.

Then, the phosphor layer 210 and the OLED layer 220 are bonded while passing through the pair of

rollers

110 and 120. At this time, the bonding is processed by applying pressure and heat to the pair of

rollers

110 and 120.

In the roll-to-roll process, the thickness of the phosphor layer 210 is controlled and shaped by the blade 150. At this time, the blade 150 is height-adjustable and has a variety of shapes to form a patterned phosphor layer 210 '.

Then, the OLED layer 220 'and the microrange layer 170 to which the phosphor layer 210' is bonded are prepared. In this preparation step, the OLED layer 220 'and the microrange layer 170 to which the phosphor layer 210' is bonded are supplemented, distributed, and transported by the roller 160.

At this time, the micro-range layer 170 is bonded to the OLED layer 220 'to which the phosphor layer 210' is bonded through the roller 170.

Thus, the OLED to which the microrange 170 is bonded is obtained. This step of obtaining the OLED signifies the final or intermediate completion step of the process and is prepared on the roller.

The roll-to-roll process shown in FIG. 20 performs the following steps.

First, the phosphor layer 210 and the OLED layer 220 are prepared. In this preparation step, the phosphor layer 210 and the OLED layer 220 are supplemented, distributed, and transported by the

rollers

110 and 120. In addition, the present invention may be applied to manufacture top emission and bottom emission OLEDs, respectively.

rollers

110 and 120. At this time, the joining is made by applying pressure and heat of the pair of rollers.

Thereafter, the phosphor layer 210 'by the patterning roller 180 is patterned. In this case, the patterning roller 180 may be height-adjustable and have various shapes to form the patterned phosphor layer 210 '. Patterning is performed by applying pressure and heat to the patterning roller 180.

Thus, an OLED is obtained in which the patterned phosphor layer 210 'is bonded. This step of obtaining an OLED means the final step or intermediate completion step of the process and is prepared on the roller.

In FIG. 21, the phosphor layer 210 ′ is patterned using the patterning roller 190 having a different shape from the patterning roller 180 of FIG. 20.

22 and 23 are diagrams for describing a roll-to-roll before and after treatment method.

22 and 23 illustrate a roll-to-roll process method further including a roll-to-roll pre / post treatment process in the roll function described in the roll-to-roll process described above with reference to FIGS. 1 to 21.

Specifically, in the roll-to-roll process and the pre- and post-processing of the process, by adding a chamber (room or zone) function, heating, drying, cooling, cooling drying, flowing (flowing), vacuum suction collection, gas atmosphere (gas atmosphere) Controlling, UV irradiation, cutting, spraying, organic / inorganic substance injection, and solution treatment can be zoned

FIG. 22 illustrates a roll-to-roll process in which a pre / post treatment method is applied to manufacture an OLED having a high reliability / high quality phosphor layer bonded thereto. This roll-to-roll process is carried out under an inert atmosphere, spray process for uniformly providing a material such as fine dust removal by the flow process (adhesive), bond (bond), release agent, Processes of cooling / heating / drying after bonding are included.

In addition, FIG. 23 illustrates a roll-to-roll process in which a pre / post treatment method is applied to pattern an OLED to which a high reliability / high quality phosphor layer is bonded. This roll-to-roll process is carried out in an inert atmosphere, spray process for adhesive adhesion, organic / inorganic material injection process for the phosphor layer injection, vacuum suction or flow (flow) process, mask process, UV exposure or The developing step, the impurity removing step by solution treatment, and the drying step are included.

For reference, fabrication of the OLED by the roll-to-roll process described above is basically based on a deposition process, and aims at synthesizing the blue OLED to improve the efficiency of the blue OLED. It can be adjusted or a tandem structure can be used.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Claims

In the organic light-emitting device (OLED) manufacturing method,

(a) comprising at least one surface of the OLED and the inorganic phosphor in contact;

(b) bonding the OLED and the inorganic phosphor through roll-to-roll processing; And

(c) obtaining an OLED including the inorganic phosphor as a color conversion layer.
The method of claim 1,

The inorganic phosphor is an organic light emitting device manufacturing method of the ultra-thin film substrate of a laminated structure containing an adhesive layer and an inorganic phosphor layer.
The method of claim 2,

The OLED,

A top-emitting OLED having a laminated structure including a transmissive cathode layer, an organic emission layer, and a reflective anode layer,

And a pressure-sensitive adhesive layer of the inorganic phosphor on the cathode layer of the top-emitting OLED.
The method of claim 2,

The OLED,

It is a back-emitting OLED of a laminated structure including a reflective cathode layer, an organic emission layer, and a transparent anode layer,

The pressure-sensitive adhesive layer of the inorganic phosphor is bonded on the anode layer of the bottom-emitting OLED.
The method of claim 2,

The inorganic phosphor,

An organic light-emitting device manufacturing method produced by receiving an inorganic phosphor powder in an ultra-thin container and applying an adhesive to the ultra-thin container.
The method of claim 5,

The ultra-thin container,

The method of manufacturing an organic light emitting device, which is either ultra-thin transparent plastic or ultra-thin glass.
The method of claim 6,

In the step (a),

At least one surface of the OLED and the inorganic phosphor is provided between the first roller and the second roller during the roll-to-roll process,

And the inorganic phosphor in the form of the ultra-thin transparent plastic is wound around the first roller.
The method of claim 1,

The OLED is a blue OLED manufacturing method.