KR101296651B1 - Method of manufacturing Organic Electroluminescent Device - Google Patents

Abstract

The present invention relates to a method of manufacturing an organic electroluminescent device capable of improving color purity of a light emitting layer, wherein the first electrode and the first carrier are transferred on a substrate divided into a first light emitting area, a second light emitting area, and a third light emitting area. Forming a layer; Forming a first hydrophobic material on the first carrier transport layer in the second light emitting region and the third light emitting region; Forming a first hydrophilic material on the first carrier transport layer of the first light emitting region; Forming a first light emitting layer on the first hydrophilic material; Removing the first hydrophobic material; Forming a second hydrophobic material on the third emission region and the first carrier transport layer in the first emission region; Forming a second hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a second light emitting layer on the second hydrophilic material; Removing the second hydrophobic material; Forming a third hydrophilic material on the first carrier transport layer, the first light emitting layer, and the second light emitting layer of the third light emitting region; Forming a third light emitting layer on the third hydrophilic material; And sequentially forming a second carrier transport layer and a second electrode on the third light emitting layer.

Hydrophobic, hydrophilic, light emitting layer

Description

Method of manufacturing organic electroluminescent device

1 is a band diagram of a unit pixel of a general organic electroluminescent device.

2A through 2K are cross-sectional views of an organic light emitting display device according to a first embodiment of the present invention.

3A to 3E are cross-sectional views of an organic light emitting display device according to a second embodiment of the present invention.

Description of the Related Art

11: substrate 110: first electrode

122a, 122b, 122c: OTS pattern 124a, 124b, 124c: amine group pattern

126a, 126b, 126c, and 126c ': light emitting layer 129: second electrode

The present invention relates to an organic electroluminescent device, and more particularly to a method of manufacturing an organic electroluminescent device that can improve the color purity of each light emitting layer.

In general, in the flat panel display (FPD) field, a liquid crystal display device (LCD) has been the most noticeable display device until now. However, since the LCD displays an image using a separate backlight instead of a light emitting device, there is a technical limitation in brightness, contrast, viewing angle, and large area. Therefore, development of a new flat panel display device capable of overcoming these disadvantages has been actively developed.

The organic light emitting display device, which is one of the new flat panel displays, has a better viewing angle, contrast, and the like than a liquid crystal display because it is a self-emission type, and is lightweight and thinner because it does not require a backlight, and is advantageous in terms of power consumption.

In addition, since it is possible to drive a DC low voltage, fast response speed, and all solid, it is resistant to external shock, wide use temperature range, and in particular, inexpensive in terms of manufacturing cost.

In particular, unlike the liquid crystal display device or the plasma display panel (PDP), all of the deposition and encapsulation equipments are manufactured in the organic electroluminescent device manufacturing process. Therefore, the process is very simple.

1 is a diagram illustrating a band diagram of a unit pixel of a general organic light emitting display device.

As shown, the organic light emitting display device has a hole transporting layer 3, an emission layer 4, and an electron transporting layer between an anode electrode 1 and a cathode electrode 7. (electron transporting layer) 5.

In order to inject holes and electrons more efficiently, a hole injection layer (2) between the anode (1) and the hole transport layer (3), and between the electron transport layer (5) and the cathode (7) Each of the electron injection layer 6 may be further included.

In this case, holes injected from the anode 1 into the light emitting layer 4 through the hole injection layer 2 and the hole transport layer 3, and the electron injection layer 6 and the electron transport layer 5 from the cathode 7 The electrons injected into the light emitting layer 4 form excitons 8, from which the light corresponding to the energy between the holes and the electrons is emitted.

The anode 1 is selected from a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO) having a high work function, and light is emitted toward the anode 1. On the other hand, the cathode 7 is selected from metals having a low work function and chemically stable.

In such an organic light emitting device, a light emitting layer is formed of a light emitting material having red, green, and blue colors for each unit pixel.

However, in the light emitting material forming process as described above, due to the difference in drying time and viscosity of the light emitting material formed in each color region, the light emitting layer has a non-uniform pattern to form a few micrometers of the light emitting layer, as well as the light emitting layer There is a problem that the boundary portion of the mixed color causes the color purity of each light emitting layer is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and an object thereof is to provide a method of manufacturing an organic light emitting device capable of improving the color purity of each light emitting layer and forming a micro luminescent layer of several um.

According to an aspect of the present invention, there is provided a method of manufacturing an organic light emitting display device, including a first electrode and a first carrier transfer layer on a substrate divided into a first light emitting region, a second light emitting region, and a third light emitting region. Forming a; Forming a first hydrophobic material on the first carrier transport layer in the second light emitting region and the third light emitting region; Forming a first hydrophilic material on the first carrier transport layer of the first light emitting region; Forming a first light emitting layer on the first hydrophilic material; Removing the first hydrophobic material; Forming a second hydrophobic material on the third emission region and the first carrier transport layer in the first emission region; Forming a second hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a second light emitting layer on the second hydrophilic material; Removing the second hydrophobic material; Forming a third hydrophilic material on the first carrier transport layer, the first light emitting layer, and the second light emitting layer of the third light emitting region; Forming a third light emitting layer on the third hydrophilic material; And sequentially forming a second carrier transport layer and a second electrode on the third light emitting layer.

In addition, the method of manufacturing an organic light emitting display device according to the present invention for achieving the above object, the first electrode and the first carrier on a substrate divided into a first light emitting region, a second light emitting region, a third light emitting region Forming a transfer layer; Forming a first hydrophobic material on the first carrier transport layer in the second light emitting region and the third light emitting region; Forming a first hydrophilic material on the first carrier transport layer of the first light emitting region; Forming a first light emitting layer on the first hydrophilic material; Removing the first hydrophobic material; Forming a second hydrophobic material on the third emission region and the first carrier transport layer in the first emission region; Forming a second hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a second light emitting layer on the second hydrophilic material; Removing the second hydrophobic material; Forming a third hydrophobic material on the first and second light emitting layers; Forming a third hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a third light emitting layer on the third hydrophilic material; In another aspect, the method includes sequentially forming a second carrier transfer layer and a second electrode on the first, second, and third light emitting layers.

Hereinafter, a method of manufacturing an organic light emitting display device according to the present invention having the above characteristics will be described in detail with reference to the accompanying drawings.

2A through 2K are cross-sectional views illustrating a method of manufacturing an organic light emitting display device according to a first exemplary embodiment of the present invention, and are illustrated with reference to light emitting regions of a subpixel, which is a minimum unit of a screen.

The manufacturing method of the organic light emitting display device according to the first embodiment of the present invention is as follows.

As shown in FIG. 2A, a first electrode 110 is formed on the entire surface of the substrate 11 defined as the red light emitting area R, the green light emitting area G, and the blue light emitting area B. The first carrier transfer layer 118 is formed on the first electrode 110.

The first electrode 110 corresponds to an anode forming a lower electrode, and the material forming the first electrode 110 is selected from a transparent conductive material, preferably indium tin oxide (ITO) or indium zinc oxide (IZO). ), And indium tin zinc oxide (ITZO), and the above-described first carrier transport layer 118 has a structure in which a hole injection layer and a hole transport layer are sequentially formed under these electrode conditions.

Since the substrate 11 corresponds to a substrate for an organic light emitting device, the substrate 11 corresponds to an array substrate including a thin film transistor and a storage capacitor.

Next, as shown in FIG. 2B, the first PDMS (Polydimethylsiloxane) stamp 120 is aligned on the substrate 11 on which the first carrier transfer layer 118 is formed. The first PDMS (Polydimethylsiloxane) stamp 120 has a structure in which a portion corresponding to the green light emitting area G and a blue light emitting area B protrudes and a portion corresponding to the red light emitting area R is recessed. Have

At this time, the first carrier transfer layer 118 corresponding to the green light emitting area G and the blue light emitting area B may have a hydrophobic first octadecyltrichlorosilane (OTS) pattern similar to the light emitting layer forming material. 122a) is formed.

Subsequently, as illustrated in FIG. 2C, the first PDMS stamp 120 having the first OTS pattern 122a is contacted with the first carrier transfer layer 118 to make the first OTS pattern 122a green. The first carrier transfer layer 118 in the light emitting area G and the blue light emitting area B is transferred.

 In the above, the method of forming the first OTS pattern 122a through the PDMS stamp has been described, but the present invention is not limited thereto. After the OTS pattern is formed on the printing roller using a printing plate, the OTS pattern is formed on the first carrier. The transfer layer 118 may be formed by a roll printing method for transferring and forming an OTS pattern.

 Next, when the substrate 11 on which the first OTS pattern 122a is formed is immersed in a solvent containing a hydrophilic amine group, the first carrier of the red light emitting region R is formed. A hydrophilic first amine group pattern 124a is formed only on the transfer layer 118.

Accordingly, the first carrier transfer layer 118 of the green light emitting area G and the blue light emitting area B is defined as a hydrophobic area due to the hydrophobic first OTS pattern 122a and the red light emitting area. The first carrier transport layer 118 in (R) is defined as a hydrophilic region due to the hydrophilic first amine group pattern 124a.

Next, as shown in FIG. 2D, when the red light emitting solution is coated on the substrate 11 defined as the hydrophilic and hydrophobic region by a coating method such as an ink jet, the hydrophilic first amine group pattern ( The red light emitting layer 126a is formed to have a thickness of 290 to 390290 only on 124a. That is, when the red organic light emitting solution is coated, the organic light emitting solution is not coated on the hydrophobic first OTS pattern 122a, but only on the hydrophilic first amine group pattern 124a.

The red light-emitting solution forming the red light-emitting layer 126a is a semiconductor material having an energy band gap in the visible light region, that is, a QD solution or a low molecular material treated with a hydrophilic solvent in QD (quantum dot) such as CdSe, CdTe, or InP. Solutions that can process solutions such as solutions dispersed in organic solvents and dendrimers are available.

In the method of coating the red light emitting solution, a pen type coater method, a bar coater method, in which a pen, a blade, or a slit is brought into close contact with a surface of the light emitting solution applied thereon, a pressure is applied, and is pushed in one direction. Or a slit die coating method, a solvent method using a hydrophilic or hydrophobic solvent to selectively apply a luminescent solution, a predetermined pattern is formed on a printing roller using a printing plate, and then the pattern is transferred onto a substrate. Thereby, the roll printing method etc. which form a desired pattern can be used.

Subsequently, as illustrated in FIG. 2E, the process of forming the red light emitting layer 126a is completed by removing the first OTS pattern 122a.

Next, as shown in FIG. 2F, a second PDMS (Polydimethylsiloxane) stamp having a second OTS pattern is formed on the first carrier transport layer 118 on which the red light emitting layer 126a is formed, and the second PDMS is aligned. The stamp is brought into contact with the substrate 11 to transfer the second OTS pattern 122b onto the first carrier transfer layer 118 of the blue emission region B and the red emission layer 126a of the red emission region R. .

In this case, since the red light emitting layer 126a is already formed in the red light emitting region R, a step occurs between the red light emitting region R and the blue light emitting region B, but the second PDMS stamp has flexibility. Therefore, the second OTS pattern 122b is formed on the first carrier transfer layer 118 of the blue light emitting area B and the red light emitting layer 126a of the red light emitting area R except for the green light emitting area G. can do.

The second PDMS stamp has a structure as shown in FIG. 2B, except that portions corresponding to the blue light emitting area B and the red light emitting area R protrude and correspond to the green light emitting area G. FIG. The part to be has a recessed structure.

In the above, the method of forming the second OTS pattern 122b through the second PDMS stamp has been described, but the present invention is not limited thereto, and after forming the OTS pattern on the printing roller using a printing plate, It may be formed by the roll printing method of transferring the first carrier transfer layer 118 and the red light emitting layer 126a to form an OTS pattern.

 Next, when the substrate 11 on which the second OTS pattern 122b is formed is immersed in a solvent containing a hydrophilic amine group, the first carrier transfer layer 118 of the green emission region G may be formed. ) Only the hydrophilic second amine group pattern 124b is formed.

Therefore, the first carrier transfer layer 118 of the blue light emitting area B and the red light emitting layer 126a of the red light emitting area R are defined as hydrophobic regions due to the hydrophobic second OTS pattern 122b and emit green light. The first carrier transport layer 118 in region G is defined as a hydrophilic region due to the hydrophilic second amine group pattern 124b.

Next, as illustrated in FIG. 2G, when the green light emitting solution is coated on the substrate 11 defined as the hydrophilic and hydrophobic region by a coating method such as an ink jet, the hydrophilic second amine group pattern ( The green light emitting layer 126b is formed only on 124b to have a thickness of 290 to 390Å. That is, when the green organic light emitting solution is coated, the organic light emitting solution is not coated on the hydrophobic second OTS pattern 122b, but only on the hydrophilic second amine group pattern 124b.

The green light emitting solution forming the green light emitting layer 126b may be formed of a semiconductor material having an energy band gap in the visible light region, that is, a QD solution or a low molecular material treated with a hydrophilic solvent in a QD (quantum dot) such as CdSe, CdTe, or InP. Solutions that can process solutions such as solutions dispersed in organic solvents and dendrimers are available.

In the coating method of the green light emitting solution, a pen type coater method, a bar coater method, in which a pen, a blade, or a slit is brought into close contact with a surface of a light emitting solution applied thereto, and a pressure is pushed in one direction. Or a slit die coating method, a solvent method using a hydrophilic or hydrophobic solvent to selectively apply a luminescent solution, a predetermined pattern is formed on a printing roller using a printing plate, and then the pattern is transferred onto a substrate. Thereby, the roll printing method etc. which form a desired pattern can be used.

Subsequently, as shown in FIG. 2H, the process of forming the green light emitting layer 126b is completed by removing the second OTS pattern 122b.

Next, as illustrated in FIG. 2I, when the substrate 11 on which the green emission layer 126b is formed is immersed in a solvent containing a hydrophilic amine group, the blue light emitting region B may be formed. The hydrophilic third amine group pattern 124c is formed on the first carrier transfer layer 118, the red light emitting layer 126a, and the green light emitting layer 126b.

Accordingly, the hydrophilic region is defined as the hydrophilic third amine group pattern 124c on the first carrier transfer layer 118, the red emission layer 126a, and the green emission layer 126b of the blue emission region B.

Next, as shown in FIG. 2J, when the blue light emitting solution is coated on the substrate 11 defined as the hydrophilic region by a coating method such as an ink jet, the hydrophilic third amine group pattern 124c is formed. The blue light emitting layer 126c is formed only on the top.

The blue light emitting solution forming the blue light emitting layer 126c may be a semiconductor material having an energy band gap in the visible light region, that is, a QD solution or a low molecular material treated with a hydrophilic solvent in a QD (quantum dot) such as CdSe, CdTe, or InP. Solutions that can process solutions such as solutions dispersed in organic solvents and dendrimers are available.

In this case, the blue light emitting layer 126c is formed in all three regions by the third amine group pattern 124c formed in the red light emitting region R, the green light emitting region G, and the blue light emitting region B. The blue light emitting layer 126c formed in the blue light emitting area B is formed to have a thickness of about 300 to 400 kPa, and the red light emitting layer 126a formed in the red light emitting area R or the green light emitting layer formed in the green light emitting area G. Since 126b is formed to have a thickness of about 290 to 390 GPa, the blue light emitting layer 126c formed on the red light emitting region R and the green light emitting region G is formed to have a thickness of about 5 to 10 GPa. As described above, the blue light emitting layer 126c formed on the red light emitting area R and the green light emitting area G serves as a hole blocking layer HBL.

The hole blocking layer functions to keep the holes in the light emitting layers 126a and 126b for longer periods of time, which may increase the probability of reduced recombination due to different energy bandgap positions of the light emitting layers.

In the method of coating the blue light emitting solution, a pen type coater method, a bar coater method, in which a pen, a blade, or a slit is brought into close contact with a surface of the light emitting solution applied, a pressure is applied, and is pushed in one direction. Or a slit die coating method, a solvent method using a hydrophilic or hydrophobic solvent to selectively apply a luminescent solution, a predetermined pattern is formed on a printing roller using a printing plate, and then the pattern is transferred onto a substrate. The roll printing method etc. which form a desired pattern by this can be used.

As shown in FIG. 2K, the second carrier transfer layer 128 and the second electrode 129 are sequentially formed on the blue light emitting layer 126c.

When the second electrode 129 corresponds to a cathode, the material forming the second electrode 129 may be selected from a metal material having a low work function value such as aluminum (Al), and the second carrier transport layer. Reference numeral 128 has a structure in which an electron transport layer and an electron injection layer are stacked in this order.

First carrier transfer layer 118, light emitting layers 126a, 126b, and 126c sequentially formed between the first and second electrodes 110 and 129, and the first and second electrodes 110 and 129, and a second carrier transfer. Layer 128 forms an organic electroluminescent device (E).

3A to 3E are cross-sectional views of an organic light emitting display device according to a second exemplary embodiment of the present invention.

In the method of manufacturing the organic electroluminescent device of the first embodiment of the present invention, the blue light emitting layer is formed not only on the blue light emitting region but also on the red light emitting layer 126a and the green light emitting layer 126b. However, the blue light emitting layer may be formed only in the blue light emitting region (B). This method is described in the second embodiment of the present invention as follows.

Some of the manufacturing methods of the organic electroluminescent device of the second embodiment of the present invention are the same as those of the first embodiment of the present invention. That is, the red and green light emitting layers 126a and 126b are formed by the same process as that of FIGS. 2A to 2H.

3A, a third PDMS (Polydimethylsiloxane) stamp (not illustrated, see FIG. 2B) having a third OTS pattern 122c formed thereon is formed with the red and green light emitting layers 126a and 126b. Aligned with the substrate, the third PDMS stamp is in contact with the substrate 11 to transfer the third OTS pattern 122c onto the red and green light emitting layers 126a and 126b.

The third PDMS stamp has a structure as shown in FIG. 2B, except that portions corresponding to the red and green light emitting regions R and G protrude, and portions corresponding to the blue light emitting region B are It has a recessed structure.

In the above description, the method of forming the third OTS pattern 122c through the third PDMS stamp has been described. And a roll printing method which is transferred onto the green light emitting layers 126a and 126b to form an OTS pattern.

As shown in FIG. 3B, when the substrate 11 on which the third OTS pattern 122c is formed is immersed in a solvent containing a hydrophilic amine group, the first light emitting layer B may have a first blue light emitting region B. Hydrophilic third amine group pattern 124c is formed only in the carrier transport layer 118.

Therefore, the red and green light emitting layers 126a and 126b are defined as hydrophobic regions due to the hydrophobic third OTS pattern 122c, and the first carrier transfer layer 118 of the blue light emitting region B is formed of a hydrophilic third layer. The amine group pattern 124c defines the hydrophilic region.

As shown in FIG. 3C, when the blue light emitting solution is coated on the substrate 11 defined as the hydrophilic and hydrophobic region by a coating method such as an ink jet, the hydrophilic third amine group pattern 124c may be formed. Only the blue light emitting layer 126c 'is formed to have a thickness of 290 to 390Å. That is, when the blue light emitting solution is coated, the light emitting solution is not coated on the hydrophobic third OTS pattern 122c, but only on the hydrophilic third amine group pattern 124c.

The blue light emitting solution forming the blue light emitting layer 126c 'is a QD solution or a low molecular material in which a semiconductor material having an energy band gap in the visible light region, that is, a QD (quantum dot) such as CdSe, CdTe, or InP is treated with a hydrophilic solvent. It is possible to selectively use a solution in which the solution is dispersed in an organic solvent and a solution processing solution such as a dendrimer.

In the method of coating the blue light emitting solution, a pen type coater method, a bar coater method, in which a pen, a blade, or a slit is brought into close contact with a surface of the light emitting solution applied, a pressure is applied, and is pushed in one direction. Or a slit die coating method, a solvent method using a hydrophilic or hydrophobic solvent to selectively apply a luminescent solution, a predetermined pattern is formed on a printing roller using a printing plate, and then the pattern is transferred onto a substrate. Thereby, the roll printing method etc. which form a desired pattern can be used.

3D, the process of forming the blue light emitting layer 126c ′ is completed by removing the third OTS pattern 122c.

Next, as shown in FIG. 3E, the second carrier transfer layer 128 and the second electrode 129 are formed on the substrate 11 on which the red, green, and blue light emitting layers 126a, 126b, and 126c 'are formed. Form in turn.

When the second electrode 129 corresponds to a cathode, the material forming the second electrode 129 may be selected from a metal material having a low work function value such as aluminum (Al), and the second carrier transport layer. Reference numeral 128 has a structure in which an electron transport layer and an electron injection layer are stacked in this order.

The first carrier transfer layer 118, the light emitting layers 126a, 126b, and 126c ′ that are sequentially formed between the first and second electrodes 110 and 129, and the first and second electrodes 110 and 129, and the second carrier. The transfer layer 128 forms an organic electroluminescent device (E).

On the other hand, the hydrophilic amine group pattern forming process is not limited to being formed through the solvent containing the hydrophilic materials of the above-described embodiment, various modifications and changes can be made within the scope without departing from the technical spirit of the present invention Do.

The hydrophobic OTS pattern forming process is not limited to forming through the PDMS in which the OTS is formed, and various modifications and changes can be made without departing from the technical spirit of the present invention.

In addition, the present invention is not limited only to the above-described embodiment, which is a process of forming a green light emitting layer after forming a red light emitting layer, and a red light emitting layer may be formed after forming the green light emitting layer.

As described above, the method of manufacturing the organic light emitting display device according to the present invention has the following effects.

In the method of manufacturing the organic light emitting device, a drying time and a viscosity of the light emitting layer are defined by performing a light emitting layer forming process after defining a region in which the light emitting layer is to be formed during the process of forming the light emitting layer as a hydrophilic region and a hydrophobic region where the light emitting layer will not be formed. It is easy to form a micro luminescent layer of several um by preventing the pattern non-uniformity of the organic light emitting layer due to the difference, there is an effect of the process simplification because it is not necessary to perform the formation and removal process of the partition wall.

In addition, in the method of manufacturing the organic light emitting display device, a region in which the light emitting layer is to be formed during the forming process of the light emitting layer is defined as a hydrophilic region, and a region in which the light emitting layer is not formed is defined as a hydrophobic region, and then the light emitting layer forming process is performed. There is an effect of preventing the color of the boundary from being mixed, thereby improving color purity of each light emitting layer.

Claims (13)

Forming a first electrode and a first carrier transfer layer on a substrate divided into a first emission region, a second emission region, and a third emission region; Forming a first hydrophobic material on the first carrier transport layer in the second light emitting region and the third light emitting region; Forming a first hydrophilic material on the first carrier transport layer of the first light emitting region; Forming a first light emitting layer on the first hydrophilic material; Removing the first hydrophobic material; Forming a second hydrophobic material on the third emission region and the first carrier transport layer in the first emission region; Forming a second hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a second light emitting layer on the second hydrophilic material; Removing the second hydrophobic material; Forming a third hydrophilic material on the first carrier transport layer, the first light emitting layer, and the second light emitting layer of the third light emitting region; Forming a third light emitting layer on the third hydrophilic material; And And sequentially forming a second carrier transporting layer and a second electrode on the third light emitting layer. The method of claim 1, Forming the first hydrophobic material, Preparing a first PDMS stamp having protrusions in portions corresponding to the second and third light emitting regions; Forming a first OTS pattern on the protrusion of the first PDMS stamp; And aligning the first PDMS stamp on the substrate and contacting the first PDMS stamp to transfer the first OTS pattern to the first carrier transfer layer of the second and third light emitting regions. Method of manufacturing a light emitting device. The method of claim 1, Forming the second hydrophobic material, Preparing a second PDMS stamp having protrusions in portions corresponding to the first and third light emitting regions; Forming a second OTS pattern on the protrusion of the second PDMS stamp; And aligning the second PDMS stamp on the substrate and contacting the second PDMS stamp to transfer the second OTS pattern to the first carrier transfer layer of the first and third light emitting regions. Method of manufacturing a light emitting device. The method of claim 1, Forming the first, second, third hydrophilic material, A method of manufacturing an organic light emitting display device, characterized in that the amine group is immersed in a solvent containing an amine group to form an amine group pattern in the first carrier transport layer. The method of claim 1, The third light emitting layer is a blue light emitting layer, characterized in that the manufacturing method of the organic light emitting device. The method of claim 1, The first light emitting layer is a red light emitting layer, the second light emitting layer manufacturing method of an organic light emitting device, characterized in that the green light emitting layer. The method of claim 1, The first light emitting layer is a green light emitting layer, the second light emitting layer is a method of manufacturing an organic light emitting device, characterized in that the red light emitting layer. Forming a first electrode and a first carrier transfer layer on a substrate divided into a first emission region, a second emission region, and a third emission region; Forming a first hydrophobic material on the first carrier transport layer in the second light emitting region and the third light emitting region; Forming a first hydrophilic material on the first carrier transport layer of the first light emitting region; Forming a first light emitting layer on the first hydrophilic material; Removing the first hydrophobic material; Forming a second hydrophobic material on the third emission region and the first carrier transport layer in the first emission region; Forming a second hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a second light emitting layer on the second hydrophilic material; Removing the second hydrophobic material; Forming a third hydrophobic material on the first and second light emitting layers; Forming a third hydrophilic material on the first carrier transport layer of the second light emitting region; Forming a third light emitting layer on the third hydrophilic material; And sequentially forming a second carrier transfer layer and a second electrode on the first, second, and third light emitting layers. 9. The method of claim 8, Forming the third hydrophobic material, Preparing a third PDMS stamp having protrusions in portions corresponding to the first and second light emitting regions; Forming a third OTS pattern on the protrusion of the third PDMS stamp; And arranging the third PDMS stamp on the substrate and then contacting the third PDMS stamp to transfer the third OTS pattern onto the first and second light emitting layers. 9. The method of claim 8, Forming the first, second, third hydrophilic material, A method of manufacturing an organic light emitting display device, characterized in that the amine group is immersed in a solvent containing an amine group to form an amine group pattern in the first carrier transport layer. 9. The method of claim 8, The third light emitting layer is a blue light emitting layer, characterized in that the manufacturing method of the organic light emitting device. 9. The method of claim 8, The first light emitting layer is a red light emitting layer, the second light emitting layer manufacturing method of an organic light emitting device, characterized in that the green light emitting layer. 9. The method of claim 8, The first light emitting layer is a green light emitting layer, the second light emitting layer is a method of manufacturing an organic light emitting device, characterized in that the red light emitting layer.

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