JP2001137761A - Dispenser for highly viscous substance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dispenser for a highly viscous substance which is employed for forming a liquid coating material of a highly viscous substance on a medium by discharging the liquid coating material of the highly viscous substance from opening parts and depositing the liquid coating material on the medium, and suppresses unevenness of the discharge amount in the width direction of a row of opening parts. SOLUTION: This dispenser for a highly viscous substance comprises a discharge means which is equipped with two or more opening parts of such as circular or polygonal orifices, nozzles, and the like with about 50 μm to 1 mmϕ pore diameter in a lower part of a container, electrodes installed using some or all of the opening parts for the electrodes themselves, and the container filled with a highly viscous substance of 1,000 cPs to 1,000,000 cPs as a liquid coating material and which is for discharging the material out the opening parts, a pressurizing means for-pressurizing the liquid coating material packed in the container of the discharge mean, and an electric power source for applying pulsed voltage between the opening parts of the discharge means and the medium. The pressurizing means has a supply port of a high pressure gas for pressurizing installed in one side face of the container so as to introduce the high pressure gas toward the side face on the opposite to the former side face on the liquid surface of the liquid coating material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION
The present invention relates to a dispenser for a high-viscosity substance, which discharges a high-viscosity substance of 1,000,000 cps and deposits the substance on a medium.

[0002]

2. Description of the Related Art Conventionally, as a method of forming a high-viscosity substance on an object (also referred to as a medium), a phosphor ink composed of a phosphor powder, a binder, and a solvent is charged and ejected from a nozzle to form finely divided fluorescent ink. A fluorescent screen forming method has been proposed in which a body ink is attached to the inner surface of a panel by a high voltage to form a fluorescent screen (Japanese Patent Laid-Open No. 55-131948). Further, a method of forming a fluorescent screen of a cathode ray tube by discharging and applying a phosphor using an ink jet type nozzle mechanism has been proposed (Japanese Patent Application Laid-Open Nos. 7-81057 and 8-212915). However, those conventionally proposed, the high-viscosity substance in the nozzle is sucked by electrostatic force or electromechanically pressurized and extruded from the tip opening, and when the extruded bulging portion has a certain length,
It is cut from the root part (nozzle opening part) and then becomes a spherical droplet due to surface tension, which adheres to the target object. Therefore, the size of the dots attached to the target is about 5 to 6 times larger than the nozzle opening diameter, and it is difficult to form a fine pattern on the target using a high-viscosity substance. . In these methods, the only way to reduce the diameter (dot diameter) of a droplet of a high-viscosity substance formed from a nozzle is to reduce the nozzle opening diameter. For this reason, when the viscosity of the high-viscosity substance is very large, or when the particle diameter of the high-viscosity substance is large, there is a problem that the nozzle is clogged.

[0003] Correspondingly, a hole diameter of 50 is provided at the lower part of the container.
a circular or polygonal orifice of about μm to 1 mmφ,
It has one or more openings such as nozzles, and part or all of the openings are arranged as electrodes, and 1000 cps to 10
Discharging means for filling a container with a high-viscosity substance of 00000 cps as a liquid coating material and discharging the liquid from an opening; pressurizing means for pressurizing the liquid coating material filled in the container of the discharging means; Using a dispenser for a high-viscosity substance provided with a power supply for applying a pulsed voltage between the opening of the medium and the medium, pressure is applied to the liquid application material in the container of the discharging means as necessary, and the liquid application material is applied to the opening. Is formed, and a first predetermined pulse voltage is applied between each opening of the discharge means and the substrate to be applied through the electrode of each opening, so that the meniscus of the liquid application material is vertically elongated at the opening. In a state in which the elongated portion is formed, the tip of the elongated portion is allowed to hang down, or in a state where the elongated portion is formed, each opening of the discharging means is further connected to the substrate to be coated through the electrode of each opening. 2nd between materials
By applying a predetermined pulse voltage, a part of the extended portion is separated from the tip of the extended portion, and while directly or indirectly attaching the liquid coating material to the substrate to be coated, The method of applying a liquid coating material made of a high-viscosity material to a substrate to be coated, which moves the coating material relative to the coating substrate and applies the liquid coating material on the plane of the substrate to be coated, is proposed by the present applicant. Have been. FIG. 10 shows a schematic configuration of a dispenser for a high-viscosity substance used in this coating method. FIG.
Medium 10 is for high viscosity substances, 11 is a control unit, 12 is a container,
13 is an opening, 14 is an electrode, 15 is a power supply, 16 is a medium (object), 18 is an extension, 19 is a drop, 20 is a needle,
Reference numeral 30 denotes a discharging unit, and 35 denotes a pressing unit. The dispenser for a high-viscosity substance shown in FIG. 10 has a row of openings composed of a plurality of openings arranged in the lower part of the container 12. In this application method using the dispenser for a high-viscosity substance, There has been a problem that there is a large variation in the discharge amount in the row width direction.

[0004]

As described above, as shown in FIG. 10, a dispenser for a high-viscosity substance having a plurality of openings arranged in the lower part of the container 12 is used. A pressure is applied to the liquid coating material in the container to form a meniscus of the liquid coating material in the opening, and a first predetermined pulse is applied between each opening of the discharge means and the substrate to be coated through the electrode of each opening. Applying a voltage, from the distal end of the extending portion in a state where the meniscus of the liquid coating material has been elongated vertically in the opening portion, so as to hang down, or in a state where the extending portion is formed, By applying a second predetermined pulse voltage between each opening of the discharge means and the substrate to be coated through the electrode of each opening, a part of the extending part is separated from the tip of the extending part, thereby directly or indirectly. While applying the liquid coating material to the substrate to be coated. In addition, in the coating method in which the discharge unit is moved relatively to the substrate to be coated and the liquid coating material is coated on the plane of the substrate to be coated, the discharge amount in the width direction of the row of openings varies. It was big, and the correspondence was demanded. The present invention corresponds to this, and as described above, a liquid application material composed of the high-viscosity material is discharged from an opening to adhere and apply the liquid application material on a medium. An object of the present invention is to provide a dispenser for a high-viscosity substance used in a method of forming a liquid coating material composed of a viscous substance, which has a small variation in a discharge amount in a width direction of an opening row.

[0005]

According to the present invention, there is provided a dispenser for a high-viscosity substance, which has a hole diameter of 50 μm to 1 mm at a lower portion of a container.
It has two or more openings such as circular or polygonal orifices, nozzles, etc. of about φ, and a part or whole of each opening is arranged as an electrode, and 1000 cps to 1,000,000
Filling the container with a high-viscosity material of cps as a liquid coating material, discharging means for discharging the liquid from the opening, and pressurizing means for pressing the liquid coating material filled in the container of the discharging means,
A power source for applying a pulsed voltage between the opening of the ejection unit and the medium is provided, and if necessary, pressure is applied to the liquid application material in the container of the ejection unit to form a meniscus of the liquid application material in the opening. Applying a first predetermined pulse voltage between each opening of the discharge means and the substrate to be coated through the electrode of each opening,
In the state where the meniscus of the liquid application material is elongated in the opening, the meniscus is formed to extend vertically from the tip of the elongate part, or, in a state where the elongate part is formed, further through the electrodes of the respective openings. By applying a second predetermined pulse voltage between each opening of the discharge means and the substrate to be coated, a part of the extended portion is separated from the tip of the extended portion, and directly or indirectly, A high-viscosity substance dispenser that applies a liquid coating material onto a plane of the coating target substrate while moving the discharging means relative to the coating target substrate while attaching the liquid coating material to the coating material, The pressurizing means is characterized in that a supply port for high-pressure gas for pressurization is provided on one side of the container, and the high-pressure gas is introduced toward the side facing the one side on the liquid surface of the liquid coating material. It is assumed that. In the above, the liquid coating material is formed into a fine needle-like shape provided between the opening of the discharge means and the base material to be coated, near the tip of the extending portion, for controlling the lines of electric force when a pulse voltage is applied. The coating liquid is dropped from the fine needle-like material onto the surface of the substrate to be coated and adhered thereto. Further, in the above, the frequency of the pulse voltage is 10H
The frequency range is from z to 100 kHz.
Further, in the above, a needle-like object for controlling a line of electric force generated when a pulse voltage is applied between the opening of the ejection unit and the medium is provided between the opening of the ejection unit and the medium and near the medium. The high-viscosity substance separated from the tip of the extension part formed by extending the meniscus vertically, characterized in that it is arranged so as to contact the needle-like object, The surface is characterized by being fluorine-processed or made of Teflon or a perfluorofluorine compound. In the above, the high-viscosity substance is a phosphor.

[0006]

The dispenser for a high-viscosity substance of the present invention having such a structure discharges a liquid application material composed of the high-viscosity substance from an opening and adheres the liquid application material onto a medium. To provide a dispenser for a high-viscosity material used in a method of forming a liquid coating material composed of a high-viscosity material on a medium, which has a small variation in a discharge amount of an opening at each position in a width direction of an opening row. Is made possible. As a result, it is possible to provide a dispenser for a high-viscosity substance that enables a fine pattern to be accurately formed with a liquid coating material composed of a high-viscosity substance on a medium stably without causing clogging of an opening. I do. In particular,
In the lower part of the container, there are two or more circular or polygonal orifices having a hole diameter of about 50 μm to 1 mmφ, two or more openings such as nozzles, and a part or the whole of each opening is arranged as an electrode, and 1000 cps to 1,000,000 cps. Discharging means for filling the container with a high-viscosity substance as a liquid application material and discharging the liquid from an opening; pressurizing means for pressurizing the liquid application material filled in the container of the discharging means; and opening of the discharge means And a power source for applying a pulsed voltage between the medium and the medium, applying pressure to the liquid coating material in the container of the discharging means as needed, forming a meniscus of the liquid coating material in the openings, A first predetermined pulse voltage is applied between each opening of the discharging means and the substrate to be applied via the electrode, and the meniscus of the liquid coating material is elongated at the opening to form a vertically elongated portion. From the tip And applying a second predetermined pulse voltage between each of the openings of the discharge means and the substrate to be coated via the electrodes of each of the openings while the flow is flowing or in a state where the elongated portion is formed. Thereby, a part thereof is separated from the tip of the extension portion, and the liquid application material is directly or indirectly attached to the substrate to be coated, and the discharge unit is moved relatively to the substrate to be coated. A dispenser for a high-viscosity material that applies a liquid coating material on a flat surface of a substrate to be coated, wherein the pressurizing means provides a supply port for high-pressure gas for pressurization on one side of the container, and converts the high-pressure gas into a liquid. This is achieved by introducing the liquid to the side opposite to the one side on the liquid surface of the coating material.

That is, the pressurizing means provides a supply port for high-pressure gas for pressurization on one side of the container, and introduces the high-pressure gas on the liquid surface of the liquid coating material toward the side opposite to the one side. Accordingly, the variation in the discharge amount of the opening at each position in the width direction of the opening row can be reduced.

[0008] Further, in a state where the meniscus is formed into a vertically elongated extension portion, the meniscus is discharged from the tip of the extension portion so as to hang down, or in a state where the extension portion is formed, and further discharged through the electrode of each opening. By applying a pulse voltage of at least a second predetermined voltage value between each opening of the means and the substrate to be coated, a part of the extension is separated from the tip of the extension, and directly or indirectly, It is a high-viscosity material containing particles with a large diameter that allows the elongation part to have a diameter much smaller than the opening of the opening, and can be applied to fine parts. Even if it is present, it can be formed on the object with high definition.

[0009] Since the high-viscosity substance is dropped onto the medium from the fine needle-like material and adhered thereto, the formation position of the drop of the high-viscosity substance on the medium can be surely controlled.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a schematic configuration diagram of a first example of an embodiment of a high-viscosity substance dispenser of the present invention, and FIG.
1A is a diagram viewed from the A1 side in FIG. 1A, and FIG.
FIG. 2A is a view showing a supply port of a high-pressure gas from a pressurizing unit to a discharge unit as viewed from the A2 side. FIG. 2A is a diagram illustrating a high-viscosity substance dispenser according to an embodiment of the present invention. FIGS. 2 (b) and 2 (c) are views showing the form of application of a liquid application material to a medium, and FIG. 3 is a principle of discharging the dispenser shown in FIGS. 1 and 2. FIG. 4 is a diagram for explaining application of a pulse voltage and dropping, FIG. 5 is a diagram for explaining the dropping control of a liquid coating material, and FIGS. 6 to 8 are pulse voltages. FIG. 9 is a diagram for explaining the application and dropletization of the liquid, and FIG. 9 is a diagram for explaining the necessity of the position control at the time of discharging the liquid application material. 1 to 5, 10 is a liquid coating material (high-viscosity substance), 10S is a liquid surface, 11 is a control unit, 12 is a container, 1
3 is an opening, 14 is an electrode, 15 is a power source, 16 is a substrate to be coated (also referred to as a medium or an object to be coated), 17 is a meniscus, 18 is an extension, 19 is a drop, 20 is a needle, and 30 is The discharge means 35 is a pressure means.

First, a first example of an embodiment of a dispenser for a high-viscosity substance of the present invention will be described with reference to FIG. This example is a dispenser for a high-viscosity material for applying and forming a phosphor layer for a plasma display panel (also referred to as a PDP).
And a part of the opening 13 is arranged as an electrode 14, and a high-viscosity substance made of a phosphor is applied to the liquid coating material 10.
A discharge means 30 for filling the container 12 and discharging the liquid from the opening 13; a pressurizing means 35 for pressurizing the liquid coating material 10 filled in the container 12 of the discharge means 30; A power supply 15 for applying a pulsed voltage between the unit 13 and the medium 16; and a control unit 11 for controlling them in association with each other. The pressurizing means 35 includes a high-pressure gas for pressurization (usually compressed air). Is provided on one side surface of the container 12, and the high-pressure gas is introduced on the liquid surface 10S of the liquid coating material 10 toward the side surface opposite to the one side surface. Then, if necessary, a pressure is applied to the liquid application material 10 in the container 12 of the discharge means 30 to form a meniscus of the liquid application material 10 in the opening 13, and the discharge means 30 is formed through the electrode 14 of each opening 13. A first predetermined pulse voltage is applied between each of the openings 13 and the substrate 16 to be applied, so that the meniscus of the liquid coating material 10 is elongated in the openings 13 in the longitudinal direction.
1A, the liquid application material 10 is directly adhered to the substrate 16 to be applied, so as to hang down from the distal end of the extending portion, as shown in FIG.
Is moved relatively to the substrate 10 to be coated, and the liquid coating material 10 is applied on the plane of the substrate 16 to be coated. Alternatively, with the extended portion 18 formed as described above, a second predetermined pulse is further applied between each opening 13 of the ejection means 30 and the substrate 16 through the electrode 14 of each opening 13. By applying a voltage, a part of the extension portion 18 is separated from the tip thereof, and while the liquid application material 10 is directly attached to the application base material 16,
The substrate 1 is moved relatively to the substrate 16 to be coated.
The liquid application material 10 is applied on the plane 6.
The substrate 16 to be coated is a transport roll (not shown).
And is conveyed at a predetermined speed in the direction of the arrow.

Next, a second embodiment of the embodiment of the dispenser for high-viscosity substances of the present invention will be described with reference to FIG. This example is also a high-viscosity substance dispenser for applying and forming a phosphor layer for a plasma display panel (also referred to as a PDP) as in the first example.
A plurality of circular openings 13 are provided, a part of the openings 13 is arranged as an electrode 14, and a high-viscosity substance made of a phosphor is filled in the container 12 as a liquid coating material 10, and the opening is filled with the liquid. A discharge means 30 for discharging the liquid application material 10 filled in the container 12 of the discharge means 30; a pulse voltage applied between the opening 13 of the discharge means 30 and the medium 16; The pressurizing means 35 is provided with a supply port for high-pressure gas for pressurization (usually using compressed air) on one side of the container 12, and supplies the high-pressure gas to the liquid of the liquid coating material 10. It is introduced toward the side opposite to the one side on the surface 10S, but in this example, in addition to this,
As shown in FIG. 2A, each of the openings 13
A minute needle-like object 20 for controlling the line of electric force at the time of applying a pulse voltage is provided in the vicinity of the tip of the extension 18 between the substrate and the substrate 16 to be coated. And the liquid coating material 10
Is applied to the needle 20 from the tip of the extension 18, and the needle 20
Thus, the coating liquid 10 is dropped onto the surface of the base material 16 to be coated and adhered thereto. Also in the case of this example, the electrode 1 of each opening
After applying a first predetermined pulse voltage between each of the openings 13 of the discharge means and the substrate 16 to be applied via the nozzle 4 to extend the meniscus of the liquid application material into the openings in a vertically elongated manner, FIG. 2
As shown in FIG. 2B, a second predetermined pulse voltage is applied to the electrode 14 to separate a part from the tip of the extending portion 18 and adhere it to the base material 16 to be coated, or FIG. As shown in FIG. 2 (c), the liquid coating material 10 is moved from the distal end of the extending portion 18 to the needle-like material 2 without applying the second predetermined pulse voltage.
There is a form in which the liquid is attached to the base material 16 in such a manner that the liquid flows down to 0 and further flows down from the needle-shaped material 20 to the substrate 16 to be coated. Needle 20
It is preferable to repel the liquid coating material 10 in order to drop the liquid coating material 10 as it is onto the substrate 16 to be coated,
It is preferable that the surface is processed with fluorine or made of Teflon or a perfluorofluorine compound.

For example, a part of the extension portion 18 is separated from the tip of the extension portion 18 and the liquid coating material 10 (drops 19) is applied to the substrate 16 to be coated.
In the case of adhering to FIG. 2, as shown in FIG.
Even when the needle-like object 20 shown in FIG. 9B is not provided, the droplets 19 are stably arranged along the traveling direction of the substrate 16 to be applied (thick arrow) as shown in FIG. In this case, the needle-like object 20 may not be provided, but in practice, the tip position of the extension portion 18 becomes unstable due to various causes, and as a result, as shown in FIG. The droplets 19 are attached to positions that vary from the traveling direction of 16 (thick arrow). For this purpose, a needle 120 is provided,
This controls the position where is adhered to the substrate 16 to be coated.
Of course, as shown in FIG. 2 (c), even in the case where the liquid flows down through the needle-like material 20, the position of the substrate 16 to be coated can be controlled with high accuracy.

Next, the formation and separation of the elongated portion 18 of the liquid coating material 10 extending vertically from the opening 13 will be described with reference to FIGS.
This will be described with reference to FIG. When a predetermined pressure is applied to the opening 13 of the orifice filled with the liquid coating material 10 from the container 12, a meniscus 17 protruding from the opening at the end is formed.
(FIG. 3A) In this state, as shown in FIG. 4, 10 Hz to 100 kHz.
When a pulse voltage having a voltage value V1 at the following repetition frequency is applied between the electrode 14 and the object 16 (see FIG. 4), the meniscus 17 gradually extends downward to generate the extension portion 18. (FIGS. 3 (b) and 3 (c)) When the pulse voltage having the voltage value V1 is repeatedly applied, the extending portion 18 does not expand at a certain position. (FIG. 3D) This state is a state in which the surface tension of the liquid application material 10 and the downward pulling force due to the electric field and the gravity are balanced. At this time, as shown in FIG. 4, when a pulse voltage having a voltage value V2 is applied, the extension portion 18 extends, the tip portion is cut off and separated, and a droplet (also referred to as a dot) is formed. (FIG. 3
(E)) When the pulse voltage applied in this state is returned to the voltage value V1,
The extension part 18 contracts slightly and shortens, and is stabilized in that state,
Drop 19 is no longer formed. Further, when the application of the pulse voltage is stopped, the extension portion 18 is further contracted by the surface tension of the liquid coating material 10 (FIGS. 3C and 3C).
(B)), returning to the state of the meniscus 17 shown in FIG. Note that the voltage value V of the pulse voltage in the above example is
1, V2 varies depending on the type of the liquid coating material 10,
It is necessary to appropriately change the voltage according to the viscosity of the substance, the surface tension, the opening diameter of the opening 13, and the like. The meniscus 17 has substantially the same diameter as the opening diameter to be ejected, but the tip of the extension 18 extending from the tip of the meniscus is much smaller than the opening diameter, and the droplet 1 formed separately from the tip of the extension 18 is formed.
9 is also much smaller than the aperture diameter. In this manner, the elongated portion 18 or the droplet 19 having a small diameter at the tip is obtained from the opening having the large diameter, so that the liquid coating material 10 drips from the tip of the elongated portion 18 or is separated therefrom.
When it is attached to a target medium, it can be attached in a thin line or in a narrow area. By increasing the diameter of the opening, even the liquid coating material 10 having a high viscosity of about 1,000,000 cps can form the elongated portion 18 as described above and adhere to the target medium.

As shown in FIG. 4, the formation of the droplet 19 is performed at the rising and falling timings of the pulse voltage of the voltage value V2.
9 is formed, but if the time during which the pulse voltage is applied is extremely reduced, one droplet 19 is formed for one pulse. Of course, FIG. 4 shows a case where the time during which the pulse voltage is applied is not extremely short. In FIG. 4, the circles indicate that one drop is performed at that time (timing). Furthermore, when the magnitude of the voltage value of the pulse voltage is reduced, the dropletization is not performed below a predetermined voltage (voltage value Vm). When the time during which the pulse voltage is applied becomes extremely small, the predetermined voltage (voltage value V0) is used.
As described above, only one droplet 19 may be formed for one pulse. However, when the pulse voltage is equal to or higher than the above-described predetermined voltage (voltage value V0) and the application time is equal to or longer than about 10 msec, Dropping is performed at the rising and falling timings of the pulse voltage regardless of the time.

Therefore, for example, a pulse voltage having the voltage value V3 which is larger than a predetermined voltage (voltage value V0) and a pulse voltage having a voltage value V4 which is smaller than the predetermined voltage (voltage value Vm) are used as shown in FIG. In this way, the dropping of the highly viscous substance can be controlled. In FIG. 5, the circles indicate that one dropletization is performed at that time (timing), as in FIG. That is, dropletization is performed at the timing of the rise and fall of the pulse voltage of the voltage value V3, and the extension unit 18 is maintained at a predetermined length by applying the pulse voltage of the voltage value V4. Is controlled so that dropletization can be performed smoothly at the rising and falling timings of the pulse voltage of the voltage value V3. The meniscus is created by applying a predetermined voltage (corresponding to the pulse voltage having the voltage value V1 in FIG. 4).
V1 and V4 do not necessarily have to be the same,
In operation, V1 and V4 may be set to the same value close to Vm (smaller than Vm). Of course, FIG. 5 shows a case where the time during which the pulse voltage is applied is not extremely short.

It is known that, even when a pulse voltage is applied as shown in FIG. 6 from the state shown in FIG. It is known that, even when a pulse voltage is applied as shown in FIG. 7 from the state of FIG. 8 from the state of FIG.
It is also known that no dripping is observed when applied as in (1). In FIGS. 6 to 8, circles indicate that one dropletization is performed at that time (timing), as in FIGS. 4 and 5. Of course, the time during which the pulse voltage is applied is not extremely short in FIGS.

The substrate 1 to be coated with such a liquid coating material 10
6 is 1000 cps to 1,000,000 c
It can be applied to the formation of a liquid coating material having a high viscosity of ps on the medium 16, and the diameter of the opening is preferably about 50 μm to 1 mm. If it is less than 1000 cps, it is not preferable because the shape of the dot adhered on the object cannot be maintained, and if it exceeds 1 million cps, it is difficult to fill a nozzle with a high-viscosity substance. The diameter of the particles contained in the liquid coating material 10 to be discharged is 1 / l of the discharge opening diameter (50 µm to 1 mm).
Up to about 10 is possible.

The output voltage of the power source 14 is 10H
z to 100 kHz can be applied. The distance from the tip of the opening 13 to the substrate 16 to be coated is 0.1 mm to 1 mm.
0 mm is preferred.

[0020]

FIG. 1 shows a dispenser for a high-viscosity substance according to the first embodiment shown in FIG. 1. The dispenser 30 has 215 openings 13 having an opening diameter of 500 .mu.m. 23 at 1080 μm pitch
1. Provided at the lower part of the container 12 over a width area of 12 mm, using this, the fluorescent material for PDP is dripped as the liquid coating material 10 from the tip of the extension portion 18 under the following conditions, and the discharge portion 30 The discharge amount from the opening 13 at each position was examined. As a phosphor, Blue: BaMgAl
₁₀ O ₁₇ , Eu, Green: Zn ₂ SiO ₄ , Mn, R
ed: A composition comprising a phosphor of (Y, Gd) BO ₃ and Eu and a binder was used at a viscosity of 40,000 cps. (Coating conditions) The pressure of the pressurizing means 35 1.5 kg / cm ² The voltage of the power supply 15 7 kv, 800 Hz The discharge amount of the opening 13 at each position of the discharge means 30 is shown in FIG.
It became like 5 circles. Note that the ejection amount is a relative value. The variation in the discharge amount at the five points indicated by the circles in FIG.
Dispersion amount when the dispensers for high-viscosity substances of Comparative Examples 1 and 2 were used, triangle mark 27%, square mark 20
% Is much smaller than the percentage. The dispenser for a high-viscosity substance of Comparative Example 1 is different from the dispenser for a high-viscosity substance of the example, except that the high-pressure gas supply port of the pressurizing means 35 is changed to the upper side of the container 12 and one piece is provided (at the center). This is equivalent to the conventional high-viscosity substance dispenser shown in FIG. The high-viscosity substance dispenser of Comparative Example 2 is different from the high-viscosity substance dispenser of the example in that the high-pressure gas supply port of the pressurizing means 35 is changed to the upper side of the container 12 (the position where the width direction is divided into three). In each case).

[0021]

As described above, according to the present invention, as described above, a liquid coating material composed of the high-viscosity substance is discharged from the opening, and the liquid coating material is applied to the medium by applying the liquid coating material.
It is possible to provide a dispenser for a high-viscosity substance used in a method of forming a liquid coating material composed of a high-viscosity substance on a medium, which has a small variation in the discharge amount of an opening at each position in a width direction of an opening row. And

[Brief description of the drawings]

FIG. 1A is a schematic configuration diagram of a first example of an embodiment of a high-viscosity substance dispenser of the present invention, and FIG.
1A is a diagram viewed from the A1 side in FIG. 1A, and FIG.
FIG. 3A is a diagram illustrating a supply port of a high-pressure gas from a pressurizing unit to a discharge unit as viewed from the A2 side in FIG.

FIG. 2A is a schematic configuration diagram of a second example of the embodiment of the dispenser for a high-viscosity substance of the present invention.
2 (b) and FIG. 2 (c) are diagrams showing the form of application of the liquid application material to the medium.

FIG. 3 is a diagram for explaining the principle of ejection of the dispenser shown in FIGS. 1 and 2;

FIG. 4 is a diagram for explaining pulse voltage application and dropletization.

FIG. 5 is a diagram for explaining the control for dropping a liquid coating material;

FIG. 6 is a diagram for explaining pulse voltage application and dropletization.

FIG. 7 is a diagram for explaining application of a pulse voltage and droplet formation.

FIG. 8 is a diagram for explaining pulse voltage application and dropletization.

FIG. 9 is a diagram for explaining the necessity of position control at the time of discharging a liquid coating material.

FIG. 10 is a schematic configuration diagram of a conventional dispenser for a high-viscosity substance.

FIG. 11 is a graph showing a variation in a discharge amount.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 liquid coating material (high-viscosity substance) 10S coating film 11 control unit 12 container 13 opening 14 electrode 15 power supply 16 substrate to be coated (also referred to as medium or object to be coated) 17 meniscus 18 extension unit 19 droplet 20 needle-shaped object 30 Discharge means 35 Pressure means

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroyuki Kadowaki 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. 4F033 AA14 BA01 CA05 DA05 JA07 PA11 PD06 QA01 QC08 4F041 AA05 AA16 AB01 BA05 BA13 BA54 BA56 5C028 FF16 5C040 FA01 FA02 GA03 GG09 JA13 KA20 MA23 MA24

Claims (6)

[Claims] 1. A container having a hole diameter of 50 μm to 1 mmφ at a lower part of a container.
A circular or polygonal orifice, two or more openings such as nozzles, and a part or the whole of each opening is arranged as an electrode;
Fill the container with a high viscosity substance of ps as a liquid coating material,
Discharging means for discharging this from the opening, pressurizing means for pressing the liquid coating material filled in the container of the discharging means, and a power supply for applying a pulsed voltage between the opening of the discharging means and the medium. Pressure is applied to the liquid coating material in the container of the discharging means as needed, a meniscus of the liquid coating material is formed in the opening, and each opening of the discharging means and the substrate to be coated are formed through the electrodes of each opening. Applying a first predetermined pulse voltage between the materials, in a state where the meniscus of the liquid coating material is formed in the opening to form a vertically elongated extension, from the tip of the extension, so as to hang down,
Alternatively, in a state where the extension portion is formed, a second predetermined pulse voltage is further applied between each of the openings of the ejection means and the substrate to be coated through the electrodes of the respective openings, so that the tip of the extension portion is formed. More specifically, the liquid application material is directly or indirectly attached to the substrate to be coated, and the discharging means is moved relatively to the substrate to be coated. A dispenser for a high-viscosity substance that applies a liquid coating material on a flat surface, wherein a pressurizing means is provided with a supply port for high-pressure gas for pressurization on one side of the container, and pressurizes the high-pressure gas on the liquid surface of the liquid coating material. A dispenser for high-viscosity substances, wherein the dispenser is introduced toward a side opposite to the one side. 2. The method according to claim 1, wherein the liquid application material is provided between the opening of the discharge means and the substrate to be applied, near the tip of the extension portion, for controlling lines of electric force when a pulse voltage is applied. A dispenser for high-viscosity substances, wherein the coating liquid is applied to the fine needle-like material and dropped from the fine needle-like material onto the surface of the substrate to be coated. 3. The dispenser according to claim 1, wherein the frequency of the pulse voltage is 10 Hz to 100 kHz. 4. The method according to claim 1, wherein a line of electric force generated when a pulse voltage is applied between the opening of the ejection unit and the medium is provided between the opening of the ejection unit and the medium and close to the medium. A high-viscosity substance separated from a tip of an extension portion formed by extending a meniscus in a vertically elongated manner, which is provided so as to contact the needle-like object. Dispenser for viscous substances. 5. The dispenser according to claim 4, wherein the surface of the needle-shaped material is fluorinated or made of Teflon or a perfluorofluorine compound. 6. The dispenser according to claim 1, wherein the high-viscosity substance is a phosphor.