JP2001267070A - Manufacturing method of color el display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a color EL display which can prevent air bubbles from remaining in resin, in the manufacture method of the color EL display which is filled up with resin between a color filter substrate and an EL element substrate, and pasted together. SOLUTION: The manufacturing method of the color EL display is as follows. A spacer is sprinkled by 3-10 pieces spraying densities per pixel to the EL element substrate 21 which has a 1st electrode, an EL light emission layer, and a 2nd electrode. A resin fluid drop 9 which has viscosity is dropped at a color filter substrate 22 which has a color filter. And the surface on which the resin fluid drop 9 is dropped is turned downward, and after holding the situation for a fixed time which a distance to the EL element substrate 21 is kept apart, and are taken, two substrates 21, 22 are pasted together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color EL (Elec
tro Luminescent) display device manufacturing method, especially E
The present invention relates to a method for bonding an L element substrate and a color filter substrate.

[0002]

2. Description of the Related Art A thin film EL (Electro Luminescent) display device used for a display device such as an OA (Office Automation) device or an FA (Factory Automation) device includes:
It is a self-luminous display device and has excellent characteristics such as a wide viewing angle, high visibility and high contrast that are not available in liquid crystal display devices. However, at present, at the practical level, the display color of the EL display device is a single color, and at present, the colorization is behind the liquid crystal display device.

[0003] An EL element substrate of an EL display device has two sets of electrodes, at least one of which is a transparent electrode, on a transparent substrate.
A structure including a light emitting layer sandwiched therebetween and a moisture-proof seal portion for protecting the electrode and the light-emitting layer from moisture;
EL light emission can be obtained by applying an AC electric field between a pair of electrodes. As a method of realizing colorization of an EL display device, development of a color EL display device of a color filter system that performs color display by spectrally dispersing a single light-emitting layer having a simple manufacturing process by a color filter has been mainly advanced. I have.

As a color filter system, a structure in which an upper electrode of an EL element substrate is used as a light-transmitting electrode so that light can be extracted from the upper electrode side, and a color filter and the upper electrode are arranged in close proximity to each other; In addition to the structure in which light can be extracted from the transparent substrate side of the element substrate, there are two types of methods in which a color filter is arranged on the transparent substrate side.

In the former, the upper electrode is a transparent electrode made of ITO (indium tin oxide) or the like, and the color filter must be brought close to the upper electrode. May be impaired.

[0006] On the other hand, in the latter, since the transparent substrate of the EL element substrate has a thickness of about 0.7 mm to 1.1 mm, a distance is formed between the color filter and the EL light emitting layer as a light source, and the viewing angle due to color misregistration. Is reduced. However, after two sets of electrodes, a light-emitting layer, and a moisture-resistant seal portion are formed on one surface of the transparent substrate to produce an EL element substrate, the other surface of the transparent substrate is etched and thinned to cause color shift. The problem of a decrease in the viewing angle can be solved.

[0007] On a transparent substrate of an EL element substrate processed thinly,
As a method of providing a color filter, a method of bonding a color filter substrate formed by forming a color filter made of a resin on a transparent substrate made of glass or the like has been proposed in the prior art. According to this method, an adhesive is applied to the surface of the color filter of the color filter substrate or the surface of the transparent substrate of the EL element substrate so that the two are brought into close contact with each other. In addition, there is a problem that a gap is formed between the substrate and the adhesive, and if there is no escape space for air in the gap, the air gap remains as it is.

As a method of laminating substrates in which bubbles do not occur in the resin, Japanese Patent Laid-Open No. 18326/1988 proposes a method in which the resin is interposed between the substrates and the bubbles are blown off by spinner rotation to perform lamination. Japanese Patent Application Laid-Open No. 9-278497 proposes a method of attaching a substrate while tilting the substrate.
However, neither of them is easy to manufacture.

In view of the above, the present applicant has disclosed in Japanese Patent Application Laid-Open No. 2000-10506, "Method for manufacturing color EL display device and method for bonding light-transmitting substrate", to a method in which a liquid curable resin is provided on a color filter substrate. Was dropped so as to protrude into a convex shape, and then the two substrates were overlapped, the resin was spread out, the resin was filled between the substrates, and the two substrates were bonded to each other. When the resin is provided in a convex shape, the resin comes into contact with the opposing substrate from the top when bonding, so that the contact area between the resin and the opposing substrate at the start of bonding is small, and air bubbles are not easily generated in the resin.

[0010] Further, the present applicant has filed Japanese Patent Application No. 10-304.
455, "A method for bonding a light-transmitting substrate" has proposed a bonding method in which a spacer is interposed between a substrate and a resin. When a spacer is interposed between the color filter substrate and the EL element substrate, the resin can be smoothly spread between the substrates, and generation of bubbles due to distortion of the substrate surface or local unevenness can be prevented.

[0011]

FIG. 10 is a plan view showing the movement of the resin and the spacer 2 of the conventional color EL display device 1. As shown in FIG. In the manufacturing method of Japanese Patent Application No. 10-304455 described above, since the spacers 2 are merely sprayed, the number of spacers for each picture element is likely to be uneven, which causes unevenness in the resin flow 4 indicated by the broken line. , The possibility of generation of bubbles increases. Further, when the spacer 2 moves as shown in the position B or the position C in FIG.
Can be avoided, but at locations where the spacer 2 does not move as shown by the position A, the spacer 2 hinders the spread of the resin, locally causing a delay of the resin flow 4 and is indicated by oblique lines. Bubbles 3 are generated. In the prior art, since the fixing spacer 2 is interposed between the substrates, the spacer 2 does not move, and bubbles are easily generated.

An object of the present invention is to provide a color filter substrate
A method of manufacturing a color EL display device in which a resin is filled between an L element substrate and bonded to each other to provide a method of manufacturing a color EL display device capable of preventing bubbles from remaining in the resin. It is.

[0013]

SUMMARY OF THE INVENTION The present invention provides a first electrode, E
In a method for manufacturing a color EL display device in which an EL element substrate having an L light-emitting layer and a second electrode and a color filter substrate having a color filter are bonded to each other,
A viscous resin is dropped on the L element substrate or the color filter substrate, the surface on which the resin has been dropped is directed downward, is opposed to the other substrate, is held at a distance for a certain period of time, and then the two substrates are removed. This is a method for manufacturing a color EL display device, characterized by laminating, filling and spreading resin between substrates, and laminating both substrates.

According to the present invention, a viscous resin is dropped on an EL element substrate or a color filter substrate, and the surface on which the resin is dropped is directed downward. By holding the resin, the shape of the resin can be sharpened, the contact area when the resin comes into contact with the opposing substrate can be reduced, and generation of bubbles can be prevented. Therefore, with the manufacturing method according to the present invention, a color EL display device with high display quality can be manufactured without adding an additional operation to the production process.

The present invention also relates to a method of manufacturing a color EL display device in which an EL element substrate having a first electrode, an EL light-emitting layer and a second electrode is bonded to a color filter substrate having a color filter. Spray density 3 beforehand on the element substrate or color filter substrate.
A color EL, wherein the two substrates are bonded by interposing the spacer between the substrates.
It is a manufacturing method of a display device.

According to the present invention, the number of spacers sprayed on the EL element substrate or the color filter substrate greatly affects the generation of resin bubbles.
Spray with 10 / picture element. When scattered in this order, the spacers prevent the substrate from sticking, and the resin can be spread evenly without obstructing the spread of the resin due to surface irregularities that may be present on the substrate or other obstacles. This makes it possible to prevent the generation of air bubbles.

Further, since unevenness of distribution of spacers and unevenness of resin thickness interposed between the substrates after bonding can be reduced, the thickness of the resin can be made uniform, and the thickness of the resin is controlled by the particle size of the spacer. be able to. Therefore, the manufacturing method according to the present invention can realize high quality bonding with excellent productivity, and can easily manufacture a color EL display device having high display quality.

The present invention also relates to a method of manufacturing a color EL display device in which an EL element substrate having a first electrode, an EL light emitting layer, and a second electrode is bonded to a color filter substrate having a color filter. A spacer was sprayed on the substrate at a spray density of 3 to 10 pieces / pixel, and a viscous resin was dropped on the other substrate, and the surface on which the resin was dropped was directed downward, and was spaced apart from one substrate by a distance. This is a method for manufacturing a color EL display device, wherein the substrate is held in a state for a certain period of time, then two substrates are overlapped, a resin is spread between the substrates and filled, and both substrates are bonded together.

According to the present invention, it is possible to easily produce a color EL display device having high display quality by preventing the generation of air bubbles in the resin.

[0020]

FIG. 1 is a sectional view showing a color EL display device 20 manufactured by a method for manufacturing a color EL display device according to an embodiment of the present invention. Color E
The L display device 20 is configured by bonding a color filter substrate 22 to an EL element substrate 21. EL element substrate 21
Are the transparent substrate 24, the EL element section 23, and the EL element section 2
The color filter substrate 22 is configured by forming a color filter 32 on a transparent substrate 31.

FIG. 2 shows the transparent substrate 24 and the EL element 2
3 is a perspective view showing a cross section of FIG. The EL element unit 23 includes a first electrode 26 and a first electrode 26 on a transparent substrate 24 made of glass or the like.
An insulating film 27, an EL light emitting layer 28, a second insulating film 29, and a second electrode 30 are laminated in this order.

The first electrode 26 is made of a transparent electrode film typified by ITO (indium tin oxide) having a thickness of 100 nm to 200 nm.
It is formed by forming a film with a thickness of about nm and further performing electrode pattern processing. First insulating film 27 and second insulating film 29
Is consisting of Al ₂ O _3, oxides such as SiO ₂ or TiO ₂ or a nitride such as Si ₃ N _4. EL light emitting layer 28
Has a composition in which a small amount of Mn or the like is added as a luminescent center to a base material made of ZnS, ZnSe, SrS, or the like. The second electrode 30 is formed by forming a metal film such as Al
Is formed by performing pattern processing so as to be arranged at equal intervals in a direction orthogonal to the electrode pattern of (1). By selectively applying a voltage to the first electrode 26 and the second electrode 30, the light emitting layer 28 at the intersection of the two electrodes 26 and 30 can emit light in any combination in a dot shape, and a desired light emission can be obtained. A dot matrix display can be performed.

The EL element section 23 thus configured is
Moisture resistance is protected by the moisture resistant seal portion 25 including the transparent sealing member 42 made of glass or the like and the silicone oil 43. The moisture-resistant seal portion 25 has a depth T1 =
A sealing member 42 dug to about 1 mm is arranged so that the EL element portion 23 is sealed in the dug portion, and a peripheral portion of the sealing member 42 is placed on one surface 2 of the transparent substrate 24.
4a is bonded using an adhesive 38 made of, for example, an epoxy resin. Thereafter, in the sealing space 37 in which the EL element portion 23 is sealed, the silicone oil 43 in which silica gel is injected is filled with the injection port 3 in which the sealing member 42 has been processed in advance.
5, and the inlet 35 is sealed with a sealing agent 36 made of, for example, glass.

When the silicone oil 43 is injected, the air in the sealing space 37 is exhausted from the injection port 35 and the sealing space 3 is discharged.
In a state where the inside of the chamber 7 is evacuated, the silicone oil 43 is sucked from the injection port 35 and the silicone oil 4 is introduced into the sealed space 37.
3 is filled. As described above, since the sealing space 37 needs to be evacuated when filling with oil, the transparent substrate 24 needs to have a thickness that can withstand such vacuum when filling with oil.

After the EL element portion 23 and the moisture-proof seal portion 25 are formed on the transparent substrate 24, the thickness of the portion of the transparent substrate 24 facing the EL element portion 23 by mechanical grinding, polishing, or etching using hydrofluoric acid. T2 is 100 μm
The other surface 24b of the transparent substrate 24
4 is formed. At this time, in consideration of the mounting of the color EL display device 20, the peripheral portion of the transparent substrate 24 remains in a frame shape, and only the portion where the color filter substrate 22 is embedded is etched into a concave shape.

By forming the recess 44 in the transparent substrate 24, the EL element substrate 21 and the color filter substrate 22 are bonded and fixed in a state where the color filter substrate 22 is fitted in the recess 44 of the transparent substrate 24. As a result, the adhesive strength is increased, and the color EL display device 20 has sufficient mechanical strength.

The EL element section 23 and the color filter 3
2 is thinned by etching, so that the distance between the first electrode 26 of the EL element portion 23 and the color filter 32 is reduced, thereby reducing the viewing angle due to color misregistration. And a large viewing angle can be secured. Note that the entire surface of the other surface 24b may be etched flat to reduce the thickness of the transparent substrate 24, and a resin for protection may be molded into a frame around the periphery.

The color filter 32 is formed in the concave portion 44 of the transparent substrate 24 by directly forming the color filter 32 in the concave portion 44 and bonding the transparent substrate 31 thereon. There is a method of bonding the color filter substrate 22 on which the 32 is formed to the concave portion 44. However, the former involves a difficulty in manufacturing because the color filter is formed directly on the surface of the concave portion 44 having insufficient mechanical strength of, for example, about 100 μm. On the other hand, in the latter, the thickness of the adhesive layer between the color filter substrate 22 and the transparent substrate 1 affects the viewing angle, but the influence is small.
Select the method by laminating.

The color filter 32 of the color filter substrate 22 is formed by alternately arranging red and green filters R and G made of resin, for example, on a transparent substrate 31 made of glass or the like. BK is formed. Color filter substrate 22 and EL of color EL display device 20
The element substrate 21 is filled with a thermosetting resin 33 and bonded between the surface 32a of the color filter 32 and one surface 31a of the transparent substrate 31 and the other surface 24b of the transparent substrate 24. A spacer 39 is interposed between the substrates 21 and 22. Further, one surface 31a of the transparent substrate 31 on which the color filter 32 is not provided and the transparent substrate 24 are fixed by at least two points, for example, both ends of the transparent substrate 31 by a photo-curable resin 40 such as Three Bond 3052B, and The gap formed between the filter substrate 22 and the transparent substrate 24 is filled with the silicon resin 41. Thus, the color filter substrate 22 and the EL element substrate 21 are bonded with a large strength.

Next, a method of bonding the color filter substrate 22 and the EL element substrate 21 will be described. First, one surface 32a of the color filter 32 of the color filter substrate 22
Then, a degassed thermosetting resin 33 is injected into a resin discharge device, for example, ME / ML-505X of Musashi Engineering Co., Ltd.
Set a predetermined air pressure, discharge time, etc. and discharge.
A plurality of resin droplets are formed in a convex shape. Also, the transparent substrate 31
The photo-curable resin 40 is placed on at least two points on the one surface 31a where the color filter 32 is not provided.

On the other hand, on the other surface 24b of the transparent substrate 24 of the EL element substrate 21, a predetermined spacer 39, for example, CBS-20725, CB-21 manufactured by Sekisui Fine Chemical Co., Ltd.
Spray 0. FIG. 3 is a perspective view showing the spacer spraying device 17. First, the spacer 39 is supplied to the regulator 11 of the spacer spraying device 17 using a syringe pump or the like in excess of the used amount. Also, the EL element substrate 21
After the cleaning, the terminal portion and the transparent substrate 24 are checked for the occurrence of chips, cracks, undulations, foreign matter or local protrusions, and then set in the spacer spraying device 17.

Thereafter, the outflow pressure of the spacer spraying device 17 is set to 1-2 kgf / cm ² , the spraying time is set to 0.5 seconds to several seconds, and 60 seconds or more is secured as a fall standby time. From the spacer injection port 12 above the EL element substrate 21, it is uniformly dispersed at a desired density on the other surface 39 of the transparent substrate 24. Since the spraying by the spacer spraying device 17 is a dry spraying, the sprayed spacers 39 can move on the other surface 24b of the transparent substrate 24. Also,
The application time is set in consideration of the application density of the spacer 39.

Table 1 is a table showing the number density of the spacers 39 before and after the color filter substrate 22 and the EL element substrate 21 are bonded to each other. Here, the EL of 4.7 type Q-VGA
The number of spacers was counted before and after lamination for 320 pixels each of the upper, middle, and lower portions of the element substrate 21, that is, 960 pixels in total.

[0034]

[Table 1]

As shown in Table 1, the movement of the spacer 39 particularly at the middle portion of the panel is remarkable, and is reduced to about 1/10. Also, the number of spacers 39 is
2 greatly affects the generation of bubbles in the thermosetting resin 33 after lamination.

FIG. 4 is a graph showing the relationship between the number of generated bubbles and the spacer density. Here, several samples were formed by changing the scatter density of the spacers, the number of spacers after bonding the substrates was counted, and the number of bubbles generated in the thermosetting resin at that time was observed. As a result, the density of the spacer per pixel after bonding the substrates was 0.2
The occurrence of bubbles is improved from ~ 0.3 / pixel or more.
Almost no air bubbles were observed.

Therefore, when the spacers 39 were sprayed, it was found from the difference between before and after bonding the substrates 21 and 22 that the quantity was required to be three times as large as 10 times the number of the pixels. If the amount of the spacers 39 to be sprayed is excessively increased, the spacers 39 gathered particularly in the peripheral portion are more conspicuous. For this reason, the scattering density of the spacer 39 is 10 pieces /
The picture element is considered the upper limit.

FIG. 5 is a perspective view showing a procedure for bonding the EL element substrate 21 and the color filter substrate 22. FIG.
As shown in (1) of FIG.
The element substrate 21 and the color filter substrate 22 on which the resin droplets are formed are set in the bonding device 16. The bonding apparatus 16 includes a color filter support 13 for supporting the upper substrate by suction and an EL element substrate support 14 for supporting the lower substrate by suction.

The color filter substrate support 13 can change the angle of the suction surface on which the suction port 15 is provided.
The EL element substrate support 14 has a suction surface on which a suction port 15 is provided and faces upward, and can be raised and lowered. The laminating apparatus 16 configured as described above has E
The L element substrate 21 has a spacer 3 on the EL element substrate support 14.
The color filter substrate 22 is set by being vacuum-sucked on the color-filter-substrate support 13 with the resin droplets directed upward with the surface on which the particles 9 are scattered facing upward.

Next, the suction surface of the color filter substrate support table 13 is inverted so that the surface of the color filter substrate 22 on which the resin droplets have been dropped faces downward, and the color filter substrate 22 is maintained at a distance from the EL element substrate 21. Hold for a certain time.

FIG. 6 is a cross-sectional view showing a change with time of the resin droplet 9 held downward. FIG. 6 (1)
When the color filter substrate is held for a certain period of time so that the resin droplets 9 hang down as shown in FIG. 6, the shape of the resin droplet 9 on the color filter substrate 22 becomes time-dependent due to its own weight, as shown in FIG. As it becomes sharp over time,
When the substrates are bonded, they can be brought into contact with the opposing EL element substrate 21 with a small area. Thereby, the resin droplet 9 is formed.
The bubbles that enter when the tip of the resin comes into contact with the substrate 21 can be suppressed from being expelled to the surroundings and remaining in the resin 33 after bonding.

FIG. 7 is a graph showing the relationship between the passage of time and the change in the shape of the resin droplet 9. In FIG. 7, the vertical axis indicates the angle θ between the resin droplet 9 and the color filter substrate 22, and the horizontal axis indicates the elapsed time, and shows the shape change of the resin droplet 9 held downward. The change in the shape of the resin droplet 9 is affected by the viscosity of the resin or the ambient temperature. However, as shown in FIG. 7, the angle θ between the resin droplet 9 and the color filter substrate 22 increases as time passes. The tip of the droplet 9 becomes sharp. The holding time is preferably longer, but the shape change of the resin droplet 9 is a logarithmic change as shown in FIG. 7, and the effect is obtained after 20 to 30 seconds. It is sufficient to hold the level.

Next, as shown in FIG. 5 (2), the EL element substrate support 14 is raised to bring the color filter substrate 22 and the EL element substrate 21 close to each other, and the tip of the resin droplet 9 and E
It is further held in a state where it is in contact with the L element substrate 21.

FIG. 8 is a sectional view showing a state in which the resin droplet 9 and the EL element substrate 21 are held in contact with each other.
FIG. 9 is an enlarged sectional view showing a portion surrounded by a dashed line in FIG. 8. As shown in FIG. 8, the resin droplet 9 and the EL element substrate 2
When the substrate 1 and the resin droplet 9 are held in contact with each other, even when bubbles are generated when the substrate 21 comes into contact with the resin droplet 9, the bubble 10 in the resin droplet 9 escapes to the outside over time as shown in FIG. 9. Therefore, after bonding the substrates 21 and 22, bubbles are formed in the resin 3.
3 can be avoided.

Table 2 is a table showing the relationship between the standby time for keeping the resin droplet 9 on the color filter substrate 22 and the EL element substrate 21 in contact with each other and the number of generated bubbles.

[0046]

[Table 2]

From Table 2, it was found that the number of bubbles was reduced by providing the standby time. This is because the droplet resin 9 is brought into contact with the EL element substrate 21 and waits, so that the resin 33 comes into contact with the substrate 21 and adapts.
This is because the bubble 10 is pushed out as shown in (2). This waiting time is 60 seconds as shown in Table 2.
The effect can be obtained after a lapse of about 2 seconds, so that it is sufficient to keep the level for the production efficiency.

After providing the waiting time, the color filter support 13 is lowered as shown in FIG.
The resin droplets 9 are spread between the color filter substrate 22 and the EL element substrate 21 below, the suction pressure of the color filter support 13 is released, and the substrates 21 and 22 are overlapped. afterwards,
The superposed substrates 21 and 22 are stored as they are at room temperature, and the spread of the resin 33 is awaited. Further, the resin 33 is put into an oven at 50 ° C. to 70 ° C. for about 15 minutes, and the resin 33 is spread evenly over the entire substrates 21 and 22. At this time, the working environment, particularly the ambient temperature or humidity, affects the way the resin 33 spreads.

Next, the pattern of the color filter 32 and E
After confirming the consistency with the display pattern of the L element substrate 21 using a magnifying glass or the like, the above-described photocurable resin 40
Is cured and temporarily fixed. Since the photo-curing resin 40 is provided in a portion where the color filter 32 is not formed as described above, the ultraviolet ray is not absorbed by the color filter 32, and the photo-curing resin 40 is surely cured and is cured.
2 and the EL element substrate 21 can be temporarily fixed.

Next, the thermosetting resin 33 is thermoset, and the substrates 21 and 22 are bonded. The heating at this time is performed by the color filter substrate 22 generated at the portion where the resin droplet 9 is dropped.
In order to correct the distortion, it is more preferable to set the curing conditions with a gentle temperature gradient over time rather than sudden heating. After the substrates 21 and 22 are bonded together, the recess 4 of the EL element substrate 21 is formed.
If there is a gap between the color filter substrate 4 and the color filter substrate 22, the gap is filled with the silicone resin 41 to secure mechanical strength.

[0051]

As described above, according to the present invention, a viscous resin is dropped on an EL element substrate or a color filter substrate, the surface on which the resin is dropped is directed downward, and a distance is set between the substrate and the opposing substrate. By holding the state for at least a few seconds, the shape of the resin can be sharpened, the contact area when the resin comes into contact with the opposing substrate can be reduced, and generation of bubbles can be prevented. Therefore, with the manufacturing method according to the present invention, a color EL display device with high display quality can be manufactured without adding an additional operation to the production process.

Further, according to the present invention, by spraying the spacers at a spraying density of 3 to 10 pieces / picture element, the adhesion of the substrate can be prevented and the resin can be spread uniformly. For this reason, the thickness of the resin after laminating the substrates can be made uniform, and at the same time, the generation of bubbles can be prevented.

Further, according to the present invention, it is possible to easily produce a color EL display device having high display quality while preventing the generation of air bubbles in the resin.

[Brief description of the drawings]

FIG. 1 shows a color EL display device 2 manufactured by a method for manufacturing a color EL display device according to an embodiment of the present invention.
FIG.

FIG. 2 is a perspective view showing a cross section of a transparent substrate 24 and an EL element section 23.

FIG. 3 is a perspective view showing a spacer spraying device 17;

FIG. 4 is a graph showing the relationship between the number of generated bubbles and the spacer density.

FIG. 5 is a perspective view showing a procedure for bonding the EL element substrate 21 and the color filter substrate 22.

FIG. 6 is a cross-sectional view showing a change over time of a resin droplet 9 held downward.

FIG. 7 is a graph showing a relationship between a lapse of time and a change in shape of a resin droplet 9;

FIG. 8 is a cross-sectional view showing a state where the resin droplet 9 and the EL element substrate 21 are held in contact with each other.

FIG. 9 is an enlarged cross-sectional view showing a state in which the resin droplet 9 and the EL element substrate 21 are held in contact with each other.

FIG. 10 is a plan view showing movement of a resin and a spacer 2 of the conventional color EL display device 1.

[Explanation of symbols]

 Reference Signs List 9 resin droplet 10 bubble 20 color EL display device 21 EL element substrate 22 color filter substrate 23 EL element part 24 transparent substrate 25 moisture-proof seal part 26 first electrode 27 first insulating film 28 EL light emitting layer 29 second insulating film 30 first 2 electrode 31 transparent substrate 32 color filter 33 thermosetting resin 39 spacer 40 photocurable resin

Continued on the front page F term (reference) 3K007 AB00 AB13 AB18 BA06 BB00 BB01 BB02 BB03 BB05 BB06 CA01 CB01 DA05 EC00 EC02 EC03 FA00 FA01 FA02

Claims (3)

[Claims] 1. A method for manufacturing a color EL display device in which an EL element substrate having a first electrode, an EL light emitting layer, and a second electrode and a color filter substrate having a color filter are bonded to each other. A viscous resin is dropped on the color filter substrate, and the surface on which the resin is dropped faces downward,
A color EL, characterized in that the two substrates are overlapped with each other and held for a certain period of time in a state where they are opposed to the other substrate, and then the two substrates are overlapped, resin is spread and filled between the substrates, and the two substrates are bonded to each other. A method for manufacturing a display device. 2. A method for manufacturing a color EL display device in which an EL element substrate having a first electrode, an EL light emitting layer, and a second electrode and a color filter substrate having a color filter are bonded to each other. A method for manufacturing a color EL display device, wherein spacers are sprayed on a color filter substrate in advance at a spray density of 3 to 10 pieces / pixel, and the substrates are bonded together with the spacer interposed between the substrates. 3. A method for manufacturing a color EL display device in which an EL element substrate having a first electrode, an EL light-emitting layer, and a second electrode and a color filter substrate having a color filter are bonded to each other. Is sprayed at a density of 3 to 10 pieces / pixel, and a viscous resin is dropped on the other substrate, and the surface on which the resin is dropped is directed downward. A method for manufacturing a color EL display device, comprising: holding for two hours, thereafter laminating two substrates, spreading and filling resin between the substrates, and laminating both substrates.