JP3949434B2 - Manufacturing method of organic LED element - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing an organic LED element and an organic LED element, and particularly relates to improvement of a technique for disposing a desiccant inside an organic LED element.
[0002]
[Prior art]
In recent years, organic LED elements have attracted attention as elements for flat panel displays.
Reference numeral 101 in FIG. 16 shows a conventional organic LED element. This organic LED element 101 has a main body 160 of an organic LED element.
[0003]
The main body 160 includes a substrate 102, first and second electrodes 127 and 128, and an organic thin film 103. The organic thin film 103 is disposed on one surface of the substrate 102, and the first and second electrodes 127 and 128 are both disposed in a stripe shape, and are disposed so as to sandwich the organic thin film 103 from above and below in a state of being orthogonal to each other. When a voltage is applied between the first and second electrodes 127 and 128, a current flows through the organic thin film 103 sandwiched between the first and second electrodes 127 and 128 so that the organic thin film 103 emits light. It is configured. The substrate 102 and the first and second electrodes 127 and 128 are both configured to transmit light. When the organic thin film 103 emits light, the light is transmitted through the substrate 102 and emitted to the outside.
[0004]
Since the organic thin film 103 reacts and deteriorates when it comes into contact with moisture, a container-like lid 104 is arranged on the substrate 102 so as to cover the organic thin film 103 from above. A sealing agent 105 is disposed between the lid 104 and the substrate 102, and the lid 104 and the substrate 102 are hermetically sealed with the sealing agent 105. The enclosed space 170 is shielded from the external atmosphere, and the organic thin film 103 disposed in the space 170 is not exposed to moisture in the external atmosphere.
[0005]
The desiccant 108 is adhered and fixed to the inner bottom surface of the lid 104 with an adhesive tape 109, and even if a minute amount of moisture is mixed in the space 170 surrounded by the lid 104 and the substrate 102, the moisture is not removed. Is absorbed by the desiccant 108 so that the organic thin film 103 does not come into contact with moisture.
[0006]
In order to fix the desiccant 108 to the inner bottom surface of the lid body 104, a step of attaching the desiccant 108 placed on the inner bottom surface of the lid body 104 to the inner bottom surface of the lid body 104 with an adhesive tape 109 is required. . This process is extremely difficult to automate with a machine and has to be relied on manually, which has been a major obstacle to the automation of the manufacturing process.
[0007]
[Problems to be solved by the invention]
The present invention was created to solve the above-mentioned disadvantages of the prior art, and an object of the present invention is to provide a technique for easily arranging a desiccant inside an organic LED element without relying on manual work. And
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention described in claim 1 is characterized in that a desiccant disposing step of disposing a desiccant on the inner bottom surface of a lid formed in a container shape and an organic thin film that emits light by applying voltage on one surface. Bonding which has an arranged main body and the lid, affixes an edge portion of a container opening of the lid to one surface of the main body, and forms an organic LED element by blocking the organic thin film from outside air The desiccant disposing step includes first and second storage containers, and the first and second storage containers in the first and second storage containers have a process. The first and second discharge devices provided respectively in the first and second storage containers with the first and second discharge pipes respectively connecting the storage chambers to the outside are used for the first storage chamber. A first discharge having a desiccant component and a cured resin component is placed in the second storage chamber. A second discharged material having a solvent component serving as a solvent for the cured resin component is charged, and the first discharge device transfers the first discharged material in the first storage chamber from the first discharge pipe to the lid. Discharging toward the inner bottom surface of the body, and the second discharge device discharges the second discharge in the second storage chamber from the second discharge pipe and onto the first discharge I'm dropping it.
Invention of Claim 2 is a manufacturing method of the organic LED element of Claim 1, Comprising: The said 2nd discharge material which the said 2nd discharge device discharged | transmitted went along the said 1st discharge pipe, and said Drop on the first discharge.
Invention of Claim 3 is a manufacturing method of the organic LED element of any one of Claim 1 or Claim 2, Comprising: The said cured resin component is either an ultraviolet curable resin or a thermosetting resin. It is composed on the other hand.
Invention of Claim 4 is a manufacturing method of the organic LED element of any one of Claim 1 thru | or 3, Comprising: The said 1st, 2nd discharge apparatus is said 1st, 2nd When a predetermined amount of gas is introduced into each of the first and second storage chambers in a state where the first and second discharge materials are put in the storage chamber, the first and second discharge materials are generated by the gas. Receives pressure, and the first and second discharges corresponding to the predetermined amount are discharged from the first and second discharge pipes.
[0009]
In the method for manufacturing an organic LED element of the present invention, a first discharge material having a desiccant component and a cured resin component is discharged from the first discharge pipe on the inner bottom surface of the lid, and then the second discharge pipe. The second discharged material is discharged from the first discharge material and dropped onto the first discharged material.
[0010]
The first discharge product contains almost no component that becomes a solvent of the cured resin component and has a high viscosity. However, the second discharge product contains the cured resin component of the first discharge product. When the solvent component which is a solvent is contained and the second discharge material falls onto the first discharge material, the viscosity of the cured resin component of the first discharge material becomes low, and as a result, the cured resin component has a low viscosity. And a desiccant raw material in liquid form, and the desiccant raw material is disposed on the inner bottom surface of the lid.
[0011]
Thereafter, when the cured resin component of the desiccant raw material is cured, a desiccant in which the desiccant component is dispersed in the cured cured resin component is formed and fixed to the inner bottom surface of the lid.
As described above, since the first and second discharged materials are discharged and arranged on the inner bottom surface of the lid body, the desiccant can be arranged on the inner bottom surface of the lid body. The step of attaching and fixing the agent to the inner bottom surface of the lid with an adhesive tape becomes unnecessary. Since this process had to be relied on manually, it was a great hindrance to automation. However, according to the present invention, since the manual operation of attaching and fixing is unnecessary, all the processes can be automated.
[0012]
Moreover, in this invention, the 2nd discharge material is dropped on the 1st discharge material, and the desiccant raw material with a low viscosity is obtained. Since the viscosity is low, the desiccant raw material cannot be raised to a high level and flows out to the surroundings and becomes low.
[0013]
When the lid and the main body are hermetically sealed with a sealant, if the desiccant raw material is high, the upper end portion of the first discharged material comes into contact with the organic thin film on the main body side, causing a problem. However, in the present invention, since the height of the desiccant raw material is lowered, such a problem does not occur.
[0014]
In the present invention, the second discharge material is discharged from the second discharge tube toward the first discharge tube, and the second discharge material travels along the first discharge tube and is on the first discharge material. You may comprise so that it may be dripped at.
[0015]
If the first discharge with high viscosity adheres to the discharge port or the like of the first discharge tube, the discharge port of the first discharge tube may be clogged. However, the first discharge material is temporarily in the first discharge tube. Even if the second discharge material is applied, the attached first discharge material will drop in viscosity and fall from the first discharge tube, so that the discharge port of the first discharge tube will not be clogged. .
[0016]
Moreover, in this invention, you may comprise a curable resin component in either an ultraviolet curable resin or a thermosetting resin. In this case, when the curable resin is the same as the sealing agent, the sealing agent can be cured and the cured resin component can be cured. As an example, when both the sealant and the cured resin component are made of an ultraviolet curable resin, both the sealant and the cured resin component can be cured by irradiating both the sealant and the cured resin component.
[0017]
In the present invention, the first and second discharge devices are configured such that a predetermined amount of gas can be introduced into the hollow portions of the first and second storage chambers, and the first and second storage chambers. When a predetermined amount of gas is introduced into the hollow portions of the first and second storage chambers in the state where the first and second discharge products are placed in the hollow portions of the interior, it is proportional to the amount of the introduced gas. You may comprise so that the quantity of the 1st, 2nd discharge material of the amount may be discharged from the 1st, 2nd discharge pipe.
[0018]
When the first and second ejection devices having such a configuration are used, when a liquid having a low viscosity is placed in the storage chamber, an amount proportional to the amount of gas introduced even if a predetermined amount of gas is introduced. The liquid is not discharged, and it becomes difficult to control the discharge amount. In particular, when a liquid having a low viscosity is used as a cured resin component and a desiccant component is contained therein, the amount of the desiccant component cannot be accurately controlled. The amount may vary.
[0019]
In the present invention, the desiccant component is contained in the first discharge having high viscosity, and the first discharge is discharged from the first discharge pipe. The discharge amount of one discharge object is substantially constant, and the amount of desiccant is constant in each organic LED element.
[0020]
In addition, according to the organic LED element of this invention, the cover body has a container part. This container part is arrange | positioned at the internal bottom face of a cover body, and resin containing a desiccant component is arrange | positioned in the inside.
[0021]
By configuring in this way, in the step of arranging the resin, if the resin is put inside the container part, the outflow of the resin is stopped at the inner wall surface of the container part, and the resin does not flow out to the outside of the container part. . For this reason, it can prevent that resin flows out widely to the internal bottom face of a cover body.
[0022]
Moreover, in the organic LED element of this invention, you may comprise a container part by the recessed part formed in the internal bottom face of a cover body, or the ring-shaped protrusion arrange | positioned at the internal bottom face of a cover body.
[0023]
In the case where the container portion is constituted by the concave portion, if the resin is dropped into the concave portion, the outflow of the resin is stopped on the inner side surface of the concave portion, and the resin does not flow to the outside of the concave portion.
[0024]
In addition, when the container part is constituted by the ridge, if the resin is dropped on the inner part of the ring-shaped ridge, the outflow of the resin is stopped at the inner side surface of the ridge, so the resin extends to the outside of the ridge. Will not leak.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
The dripping apparatus used for the manufacturing method of the organic LED element of this invention is shown to the code | symbol 10 of FIG.
[0026]
The dropping device 10 has a substrate stage 32. The substrate stage 32 has a flat surface so that a lid plate, which will be described in detail later, can be supported horizontally. The substrate stage 32 is attached to a moving mechanism (not shown), and is configured such that when the moving mechanism is operated, the substrate stage 32 itself can move while the lid plate 20 is supported.
[0027]
Above the substrate stage 32, the first and second ejection devices 21 are provided. ₁ , 21 ₂ Is arranged.
First and second discharge devices 21 ₁ , 21 ₂ The first and second storage containers 24 ₁ , 24 ₂ And the first and second discharge pipes 25 ₁ , 25 ₂ Respectively.
[0028]
First and second storage containers 24 ₁ , 24 ₂ Has first and second storage chambers (not shown) inside, respectively, and the first and second discharge pipes 25. ₁ , 25 ₂ Are connected to the first and second storage chambers, respectively, and the first and second storage chambers are connected to the first and second discharge pipes 25, respectively. ₁ , 25 ₂ It is comprised so that it may pass outside via.
[0029]
First and second gas introduction pipes 23 are provided in the first and second storage chambers. ₁ , 23 ₂ Are connected to each other, and the first and second gas introduction pipes 23 are connected. ₁ , 23 ₂ The other end of the gas cylinder 55 is connected to a gas cylinder 55 in which a gas having a predetermined pressure is placed. First and second gas introduction pipes 23 ₁ , 23 ₂ In the middle of the first and second control valves 22 respectively. ₁ , 22 ₂ Are provided, and the first and second control valves 22 are provided. ₁ , 22 ₂ When each is opened, each control valve 22 ₁ , 22 ₂ It is comprised so that gas can be introduce | transduced into the 1st, 2nd storage chamber connected to each.
[0030]
When the gas is introduced into the first and second storage chambers in which the liquid is placed, the liquid level of the liquid is compressed by the introduced gas, and an amount of liquid proportional to the amount of the introduced gas is first. 1. Second discharge pipe 25 ₁ , 25 ₂ Are discharged from the respective discharge ports.
[0031]
Reference numeral 20 in FIGS. 2 and 3 shows a cover plate used for manufacturing the organic LED device of the present invention. 2 is a plan view of the lid plate 20, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
[0032]
The lid plate 20 is made of a flat glass plate. The flat plate 20 has its flat surface excavated in a plurality of rectangles, and as a result, the inner space 14 which is the excavated portion. ₁ ~ 14 ₁₆ And each internal space 14 ₁ ~ 14 ₁₆ And an opening edge portion 55 protruding from the surface of the inner space 14. ₁ ~ 14 ₁₆ Are separated from each other by an opening edge portion 55. The planar shape of the opening edge portion 55 is a lattice shape, and each internal space is 14 ₁ ~ 14 ₁₆ Are arranged in a matrix.
Each internal space 11 ₁ ~ 11 ₁₆ In the center of the bottom of the recess 12 ₁ ~ 12 ₁₆ Is provided, and a desiccant to be described later is arranged therein.
[0033]
The lid plate 20 has a plurality of lid portions separated by a cut line 50 that is a center line of the opening edge portion. Here, as shown in FIGS. 2 and 3, one lid plate 20 is composed of 16 lid portions 14. ₁ ~ 14 ₁₆ have. These lid parts 14 ₁ ~ 14 ₁₆ When the lid body plate 20 is cut along the cutting line 50 which is the center line of the opening edge portion 55, each becomes a container-like lid body described in detail later.
[0034]
Below, the desiccant arrangement | positioning process which is a part of the manufacturing method of the organic LED device of this invention using the dripping apparatus 10 of the structure mentioned above and arrange | positions a desiccant on the cover body board 20 is demonstrated.
[0035]
The first and second storage containers 24 in advance ₁ , 24 ₂ The first and second discharged materials are put in the inside, respectively. Here, the first discharge product is configured by dispersing a powdery desiccant powder in an ultraviolet curable liquid resin. The desiccant powder and the resin are examples of the desiccant component and the cured resin component of the present invention, respectively. On the other hand, the 2nd discharge thing has the organic solvent used as the solvent of the resin of the 1st discharge thing.
Next, each recess 12 ₁ ~ 12 ₁₆ The lid plate 20 is supported on the substrate stage 32 in a state where is directed vertically upward.
[0036]
Next, the lid plate 20 is moved, and a plurality of lid portions 14 as shown in FIG. ₁ ~ 14 ₁₆ The lid part 14 which arrange | positions a desiccant first among these ₁ Recess 12 of ₁ However, the first discharge pipe 25 ₁ Align so that it is positioned vertically below.
[0037]
As shown in FIG. 5, the first discharge pipe 25 ₁ Are arranged vertically and the first discharge pipe 25 ₁ Discharge port 29 ₁ Is directed vertically downward, and the first discharge pipe 25 ₁ When the first discharge material is discharged from the first discharge material, the discharged first discharge material becomes the first discharge pipe 25. ₁ A recess 12 located vertically below ₁ It is dripped at the bottom of the. Reference numeral 6 denotes the dropped first discharged material. The first discharge 6 has a high viscosity and does not flow out from the dropped position to the periphery thereof, and the second recess 12 ₁ It is raised and raised at the bottom.
[0038]
As shown in FIG. 6, the second discharge pipe 25 ₂ The first discharge pipe 25 ₁ The second discharge pipe 25 is disposed obliquely above the second discharge pipe 25. ₂ Discharge port 29 ₂ Is the first discharge pipe 25 ₁ Is directed to. Second discharge pipe 25 ₂ Discharge port 29 ₂ When the second discharge 7 is discharged from the first discharge pipe 25, the discharged second discharge 7 is discharged from the first discharge pipe 25. ₁ First discharge pipe 25 arranged vertically after being applied to ₁ Is dropped onto the first discharge 6 vertically below. Reference numeral 7 denotes the discharged second discharged material.
[0039]
When the second discharge 7 is dropped onto the first discharge 6, the viscosity of the first discharge 6 becomes low, and a desiccant raw material 8 is obtained as indicated by reference numeral 8 in FIG. The desiccant raw material 8 has a low viscosity and tends to flow out to the periphery. ₁ The outflow is stopped by the inner side surface of the concave portion 12. ₁ The recess 12 does not flow outside the ₁ Is placed inside. In this state, the surface of the desiccant raw material 8 is flat and has a low height.
[0040]
Thus, one lid 14 ₁ Recess 12 of ₁ When the desiccant raw material 8 is placed on the bottom of the lid, the lid body plate 20 is moved as shown in FIG. 8, and then the lid body portion 14 where the first discharge 6 is placed as shown in FIG. ₂ Recess 12 of ₂ However, the first discharge pipe 25 ₁ Align so that it is located vertically above.
[0041]
Next, the first lid 14 ₁ In the same manner as the following, the lid part 14 ₂ Recess 12 of ₂ Inside, the desiccant raw material 8 is arrange | positioned. Thereafter, the recesses 12 are similarly formed. ₁ ~ 12 ₁₆ The desiccant raw material 8 is sequentially arranged on the lid body part 14. ₁ ~ 14 ₁₆ Recess 12 of ₁ ~ 12 ₁₆ The desiccant raw material 8 is disposed on the surface. Through the above steps, the desiccant arranging step is completed.
[0042]
Thereafter, the lid body plate 20 is detached from the substrate stage 32 and is carried into a sealing device (not shown), and the lid body plate 20 is moved while moving all the lid body portions 14. ₁ ~ 14 ₁₆ A ring-shaped sealant is disposed on the opening edge portion 55 of each of the inner spaces 11. ₁ ~ 11 ₁₆ So that the opening is located. All lid parts 14 ₁ ~ 14 ₁₆ When the desiccant raw material 8 and the sealant are disposed, the lid body plate 20 is cut from the cut line 50 to cut out the lid body. One lid body cut out is indicated by reference numeral 4 in FIG. 10 and a sealing agent is indicated by reference numeral 5. In this state, the lid 4 is formed in a container shape with the inner space 11 recessed from the opening edge portion 55, and the bottom of the inner space 11 is the inner bottom surface of the container.
[0043]
Next, as shown in FIG. 11, the lid 4 and the organic LED element main body 60 are opposed to each other and aligned. The main body 60 of the organic LED element has a substrate 2, an organic thin film 3, and first and second electrodes 27 and 28. Among these, the organic thin film 3 and the first and second electrodes 27 and 28 are disposed on one surface side of the substrate 2.
[0044]
The main body 60 and the lid body 4 are placed in a nitrogen atmosphere, the surface of the substrate 2 on the side where the organic thin film 3 and the like are disposed is directed downward, and the internal space 11 of the lid body 4 is opposed to the organic body. The main body 60 and the lid 4 are aligned so that the entire thin film 3 is positioned above the internal space 11.
Next, as shown in FIG. 12, the sealing agent 5 on the lid 4 is pressed against the surface of the substrate 2 of the main body 60.
[0045]
Next, as shown in FIG. 13, ultraviolet rays 80 are irradiated from the outside of the lid 4. Since the lid 4 is made of glass and transmits ultraviolet rays, both the sealing agent 5 and the desiccant raw material 8 are irradiated with the ultraviolet rays. When the ultraviolet ray is irradiated, both the sealant 5 and the resin in the desiccant raw material 8 are cured.
[0046]
When the sealing agent 5 is cured, the substrate 2 and the lid 4 are hermetically sealed with the sealing agent 5, and the space 70 surrounded by the substrate 2 and the lid 4 is blocked from the external atmosphere. On the other hand, when the resin of the desiccant raw material 8 is cured, it is fixed in the recess 12 of the lid 4. A desiccant powder is dispersed in the cured resin, and a desiccant composed of the desiccant powder and the cured resin is obtained and disposed in the recess 12 of the lid 4. The desiccant is indicated by reference numeral 88 in FIG.
[0047]
The organic LED element 1 as shown in FIG. 14 is completed through the above steps. In the organic LED element 1, the organic thin film 3 is sandwiched from above and below by the first and second electrodes 27 and 28. When a voltage is applied between the first and second electrodes 27 and 28, the organic thin film 3 is sandwiched between them. A current flows through the organic thin film 3, and the organic thin film 3 emits light. Since the substrate 2 of the main body 60 is made of glass and transmits light, the emitted light is irradiated through the substrate 2.
[0048]
As described above, according to the method for manufacturing an organic LED element of the present invention, after the first discharge 6 containing the desiccant powder is dropped onto the lid 4, the second discharge 7 is dropped. A desiccant material 8 having a low viscosity is formed, and then the desiccant material 8 is cured by ultraviolet irradiation to form a desiccant 88, which is fixed inside the recess 12 of the lid 4.
[0049]
For this reason, the operation | work which affixes the sheet-form or powder-form desiccant conventionally required on the inner bottom face of a cover body with an adhesive tape becomes unnecessary. Since this work has to rely on manual work, it has been a major obstacle to automation. However, according to the present invention, since this work is unnecessary, all processes can be automated.
[0050]
If the desiccant raw material 8 is high, when the lid 4 and the substrate 2 are hermetically sealed with the sealant 5, the upper end of the desiccant 88 is the organic thin film 3 on the main body 60 side and the like. In the present invention, after the first discharge 6 is discharged, the second discharge 7 is discharged onto the first discharge 6 and the viscosity of the desiccant raw material 8 is increased. Since the height is lowered and the height is lowered, such a problem does not occur.
[0051]
By the way, in the present embodiment, as described above, the first discharged material in which the desiccant powder is dispersed in the resin having high viscosity is dropped onto the lid body 4, and then the first discharged material is discharged with the second discharged material 7. The desiccant raw material 8 is obtained by lowering the viscosity of the resin. However, if the desiccant powder is dispersed in a liquid resin having a low viscosity in advance and the resin is dropped on the lid 4, the dripping is performed once. This seems to be more convenient than the embodiment described above.
[0052]
However, as described above, the first and second ejection devices 21 ₁ , 21 ₂ Is used, the liquid having a low viscosity is the first and second storage containers 24. ₁ , 24 ₂ If it is placed inside, it becomes difficult to control the discharge amount.
[0053]
For this reason, if the desiccant powder is dispersed in a low-viscosity resin, which is difficult to control the discharge amount, and the resin is discharged, the discharge amount varies, and the amount of the desiccant differs for each organic LED element. Inconvenience occurs.
[0054]
Therefore, in the present invention, a desiccant powder is contained in the first discharge 6 having a high viscosity, and the first discharge 6 is connected to the first discharge pipe 25. ₁ It is discharged from. Since the first discharge 6 has a high viscosity, the first discharge device 21 ₁ The amount discharged from is constant, and the amount of the desiccant powder disposed inside the plurality of organic LED elements 1 can be made constant. In the present invention, the viscosity of the first discharge 6 is 2 Ns / m. ² 6Ns / m or more ² The viscosity of the second discharge 7 is 0.001 Ns / m in the following range. ² 0.05Ns / m ² The range is as follows.
[0055]
Also, the first discharge pipe 25 ₁ Discharge port 29 ₁ When the first discharge 6 having high viscosity adheres to the discharge port 29, the discharge port 29 of the first discharge pipe ₁ In the present invention, the second discharge material 7 that lowers the viscosity of the first discharge material 6 is used as the first discharge pipe 25. ₁ The first discharge pipe 25 ₁ Even if the first discharge product 6 adheres to the first discharge product 25, if the second discharge product 7 is applied, the viscosity of the attached first discharge product 6 decreases and the first discharge tube 25 ₁ The first discharge pipe 25 ₁ Discharge port 29 ₁ Will not clog.
[0056]
In the above-described embodiment, the first discharge pipe 25 is used. ₁ Are arranged vertically and the second discharge pipe 25 ₂ Are arranged obliquely, the first and second discharge pipes 25 of the present invention. ₁ , 25 ₂ The arrangement of the second discharge pipe 25 is not limited to this. ₂ Discharge port 29 ₂ When the second discharge 7 is discharged from the first discharge pipe 25, the discharged second discharge 7 is discharged into the first discharge pipe 25. ₁ What is necessary is just to be comprised so that it may be dripped on the 1st discharge material 6 after being applied to. For example, the first discharge pipe 25 ₁ Are arranged at an angle, and the second discharge pipe 25 ₂ Are arranged vertically and the first discharge pipe 25 ₁ The second discharge pipe 25 is vertically above the tip of ₂ Discharge port 29 ₂ You may arrange | position so that may be located.
[0057]
Moreover, although the ultraviolet curable resin was used as the solvent component constituting the first discharge product 6, the solvent component of the present invention is not limited to this, and for example, a thermosetting resin may be used. .
[0058]
Further, in the above-described embodiment, the concave portion 12 is provided on the inner bottom surface of the lid 4 as the container portion of the present invention, and the desiccant is disposed therein, but the container portion of the present invention is not limited to this, For example, like the organic LED element shown with the code | symbol 31 of FIG. 15, the ring-shaped protrusion 38 is arrange | positioned on the internal bottom face of the cover body 4, and it is good also considering the protrusion 38 as a container part. FIG. 15 shows a state where the desiccant 88 is disposed inside the ring-shaped member 38.
[0059]
In the organic LED element 31 having such a configuration, in order to dispose the desiccant 88 inside the ridge 38, the ridge 38 is disposed on the inner bottom surface of the lid body 4, and the first, The 2nd discharge materials 6 and 7 are dripped sequentially, the desiccant raw material 8 is obtained, and the desiccant raw material 8 is hardened.
[0060]
The desiccant raw material 8 has a low viscosity and tends to flow out to the surroundings. However, the outflow of the desiccant raw material 8 is stopped by the inner side surface of the protrusion 38, and the concave portion 12 is provided on the inner bottom surface of the lid body 4. In addition, it is possible to prevent the desiccant raw material 8 from flowing out of the protrusion 38.
[0061]
The thickness of the protrusions 38 is shallower than or equal to the depth of the internal space 11. With this configuration, the upper end portion of the protrusion 38 does not protrude from the edge portion of the opening of the lid body 4, so that the protrusion 38 contacts the organic thin film 3 when the lid body 4 and the substrate 2 are sealed. There is no problem.
[0062]
【The invention's effect】
The process of disposing the desiccant in the organic LED element can be completely automated.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a dropping device used in a method for manufacturing an organic LED element according to an embodiment of the present invention.
FIG. 2 is a plan view showing a cover plate used in a method for manufacturing an organic LED element according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a lid plate used in a method for manufacturing an organic LED element according to an embodiment of the present invention.
FIG. 4 is a first diagram illustrating a desiccant arrangement process according to an embodiment of the present invention.
FIG. 5 is a second diagram illustrating a desiccant arrangement process according to an embodiment of the present invention.
FIG. 6 is a third diagram illustrating a desiccant arrangement process according to an embodiment of the present invention.
FIG. 7 is a fourth diagram illustrating a desiccant arrangement process according to an embodiment of the present invention.
FIG. 8 is a fifth diagram illustrating a desiccant arrangement step according to an embodiment of the present invention.
FIG. 9 is a sixth diagram illustrating a desiccant arranging step according to an embodiment of the present invention.
FIG. 10 is a cross-sectional view illustrating the structure of a lid according to an embodiment of the present invention.
FIG. 11 is a first diagram illustrating a sealing process according to an embodiment of the present invention.
FIG. 12 is a second diagram illustrating a sealing process according to an embodiment of the present invention.
FIG. 13 is a third diagram illustrating a sealing process according to an embodiment of the present invention.
FIG. 14 is a cross-sectional view illustrating an organic LED element according to an embodiment of the present invention.
FIG. 15 is a cross-sectional view illustrating an organic LED element according to another embodiment of the present invention.
FIG. 16 is a cross-sectional view illustrating a conventional organic LED element
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Organic LED element 2 ... Board | substrate 3 ... Organic thin film 4 ... Cover body 5 ... Sealing agent
6... First discharge 7. Second discharge 21 ₁ ... First discharge device 21 ₂ ... Second discharge device 24 ₁ ... first storage container 24 ₂ ... Second storage container 25 ₁ ... First discharge pipe 25 ₂ ... Second discharge pipe

Claims (4)

A desiccant placement step of placing a desiccant on the inner bottom surface of the lid formed in a container shape;
A body having an organic thin film that emits light upon application of a voltage on one surface; and the lid; a container opening edge portion of the lid is affixed to one surface of the body; A method for producing an organic LED element having a bonding step of blocking and forming an organic LED element,
The desiccant placement step includes
The first and second discharge pipes having the first and second storage containers and connecting the first and second storage chambers in the first and second storage containers to the outside are the first and second storage pipes, respectively. Using the first and second discharge devices respectively provided in the second storage container,
A first discharge having a desiccant component and a cured resin component is placed in the first storage chamber, and a second discharge having a solvent component serving as a solvent for the cured resin component in the second storage chamber. Put things in
The first discharge device discharges the first discharge in the first storage chamber from the first discharge pipe and drops it on the inner bottom surface of the lid,
The method of manufacturing an organic LED element, wherein the second discharge device discharges a second discharge in the second storage chamber from the second discharge pipe and drops the discharge on the first discharge. The second discharge device discharges the second discharge material in the second storage chamber from the second discharge pipe, and the second discharge material passes through the first discharge pipe and the second discharge material. The manufacturing method of the organic LED element of Claim 1 which falls on 1 discharge thing. The said hardening resin component is a manufacturing method of the organic LED element of any one of Claim 1 or Claim 2 comprised by any one of the ultraviolet curable resin or the thermosetting resin. The first and second discharge devices each have a predetermined amount in each of the first and second storage chambers in a state where the first and second discharge materials are put in the first and second storage chambers, respectively. When the gas is introduced, the first and second discharges are pressurized by the gas, and the first and second discharge pipes in amounts corresponding to the predetermined amount are supplied to the first and second discharge pipes. The manufacturing method of the organic LED element of any one of Claim 1 thru | or 3 comprised so that it might discharge from.

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