JP2002098972A - Spacer-dispersing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly disperse a spacer material, even on a substrate having a large-sized diameter, without extending the length of a dispersing nozzle in a dispersing chamber by forming the shape of the dispersing nozzle not in a straight line shape, but in a two-segment shape having an angle or forming the shape of a dispersed side in a curved shape except at least the straight line shape. SOLUTION: The spacer material 2 can be dispersed uniformly even on the substrate 7 having the large-sized diameter, without extending the length of the dispersing nozzle in the dispersing chamber 9 by adopting a main nozzle 101 and a sub nozzle 102, which do not have straight line shape but have an angle as the shape of the dispersing nozzle 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer dispersing device used for manufacturing a liquid crystal display device,
The present invention relates to a spacer spraying apparatus that can be applied to an increase in the size of a glass substrate.

[0002]

2. Description of the Related Art In a conventional spacer spraying apparatus, as shown in a sectional view of the apparatus in FIG.
Was spun by the spray nozzle XY drive unit 50 to spray. The exposure length of the spray nozzle 41 in the spray chamber 49 is about 700 mm, and the distance between the tip of the spray nozzle 41 and the glass substrate 47 is 500 to maintain a uniform spray state.
The powdery spacer material 42 such as glass beads was sprayed over the entire surface of the glass substrate 47 while the spray nozzle 41 was swung above the glass substrate 47 at a distance of about mm.

[0003]

However, in this method, when the size of the substrate is increased and the spray area is enlarged, the exposure length of the spray nozzle in the spray chamber is lengthened to increase the swivel area of the spray nozzle. It is difficult to secure a wide spray area with the current short exposure length of the spray nozzle.

[0004] In addition, increasing the length of the spray nozzle increases the height of the apparatus, which causes another problem that the installation floor is restricted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spacer spraying apparatus capable of uniformly spraying a spacer material on a substrate surface using a current spraying chamber and a spray nozzle having a current length.

[0006]

According to the present invention, there is provided a spacer spraying apparatus for spraying a spacer material over the entire surface of a substrate supported substantially horizontally in a spray chamber through a spray nozzle having a function of rotating and rotating. The basic configuration is that the shape in the length direction of the spray nozzle is a shape other than a straight line. The spacer application device of the present invention employs the following application forms.

First, the spraying nozzle comprises a main nozzle on the spacer material inflow side and a sub-nozzle on the spacer material spraying side, and the main nozzle and the sub-nozzle are linear segments connected at an angle to each other, or And a main nozzle on the spacer material inflow side and a sub-nozzle on the spacer material sprinkling side which are connected to each other, and the sub-nozzles are at least curved other than straight.

The main nozzle is set at a predetermined angle with respect to a perpendicular line of the substantially horizontally supported substrate, and then a locus of an intersection of an extension line of the main nozzle and the surface of the substrate is elliptical. Turn as much as possible.

The main nozzle rotates in a plane perpendicular to a horizontal plane at an angle of up to 40 °.

Finally, the sub-nozzle rotates about the main nozzle while the main nozzle is swirling above the substrate.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A spacer spraying apparatus for a liquid crystal display device according to the present invention, as shown in FIG. Turned by the XY drive unit 11,
The powdery spacer material 2 made of resin or glass beads is spread over the entire surface of the glass substrate 7 which is one of the transparent substrates for display, so that it can be spread uniformly over a wide area.

Hereinafter, a first embodiment of the present invention will be described.
This will be described in detail with reference to FIGS. FIG. 1 shows a cross-sectional configuration when the center of the spacer spraying device is cut along a plane passing perpendicular to the horizontal plane.

First, a tubular spray nozzle 1 having a bent tip is attached to the upper part of the spray chamber 9 so as to penetrate the upper wall surface of the spray chamber 9 so as to rotate and turn. A spray nozzle rotation drive unit 11 and a rotation drive transmission shaft 14 for rotating the spray nozzle 1 and a spray nozzle XY drive unit 10 for rotating the spray nozzle 1 are installed on the upper outer side of the nozzle 9.

Here, the spray nozzle 1 is a linear main nozzle 101 connected to the spray nozzle rotation drive unit 11 side.
And a linear sub-nozzle 1 on the side where the spacer material 2 is injected
02.

The spraying nozzle 1 in the spraying chamber 9
Is about 700 mm, and the distance from the tip of the spray nozzle 1 to the glass substrate 7 is about 500 mm to keep a uniform spray state.
The main nozzle 101 is turned at a turning angle θ1 (up to about 40 degrees), and the sub-nozzle 102 is connected to the main nozzle 101 so as to have a bending angle θ2 with respect to the main nozzle 101. The spraying range of the material 2 is set.

Next, the operation of the first embodiment will be described.

As shown in FIG. 1, when the glass substrate 7 is carried into the spraying stage 4 in the spraying chamber 9, the bent spraying nozzle 1 installed in the upper part of the spraying chamber 9 is formed.
Is rotated and swiveled by the spray nozzle rotation drive unit 11, the rotation drive transmission shaft 14, and the spray nozzle XY drive unit 10 on the upper outside of the spray chamber 9.

The spacer material 2 is supplied for a set time while the above-mentioned spray nozzle 1 is rotating and rotating, and flows through the spray nozzle 1 while being mixed with a gas such as nitrogen. 1 Spouted from the tip.

Spray nozzle swivel angle θ1 (up to about 40 degrees)
And the spray nozzle 1 set at the spray nozzle bending angle θ2
As shown in FIG. 2, the tip portion trajectory is drawn by combining the sub-nozzle tip extension line rotation trajectory 13 and the main nozzle rotation center extension line trajectory 12 with respect to the glass substrate 7. By increasing the size, the spacer material 2 can be spread uniformly over a wide range.

The spacer material 2 jetted out of the glass substrate 7 is discharged from an exhaust duct 5 provided below the spray chamber 9. The displacement at this time is damper 6
Has been adjusted.

After the spacer material 2 jetted out of the glass substrate 7 is discharged, the glass substrate 7 is carried out of the spray chamber 9.

As a first effect, the spacer spraying apparatus having the above-described structure and operation has the following advantages.
Since the spacer material can be sprayed on the area where the rotation range of the bent spray nozzle is added, even if the size of the glass substrate is enlarged and the spray area is enlarged, the wide spray area can be expanded by increasing the bending angle of the nozzle. It is easy to secure.

Next, as a second effect, since the dispersing nozzle is rotated while rotating and dispersing, the tip of the dispersing nozzle becomes finer and the spacer material is more uniformly distributed on the glass substrate. That is what you can do.

Next, a second embodiment of the present invention will be described.
This will be described with reference to FIG. As shown in FIG. 3, the present embodiment is characterized by having a spray nozzle 21 having a curved distal end, and the other configuration and operation are the same as those of the first embodiment.

The effect of the present embodiment is that when the spacer material 2 mixed with a gas such as nitrogen flows through the spray nozzle 21, the spray nozzle 21 is curved, so that the pipe in the pipe of the spray nozzle 21 is bent. This has the effect of preventing the accumulation of the spacer material that accumulates at the bent portion and extending the life of the spray nozzle.

[0026]

As described above, according to the spacer spraying apparatus of the present invention, the shape of the spraying nozzle is not linear,
By forming two line segments having an angle, or a shape on the spraying side at least a curved shape other than a straight line, without increasing the length of the spraying nozzle in the spraying chamber, even for a substrate having a large diameter. It is possible to uniformly spread the spacer material.

[Brief description of the drawings]

FIG. 1 is a sectional view of a spacer spraying device according to a first embodiment of the present invention.

FIG. 2 is a plan view of a substrate showing a state of dispersing a spacer material on a substrate by the spacer dispersing device according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a spacer spraying device according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a conventional spacer spraying device.

[Explanation of symbols]

 1, 21, 41 Spray nozzle 2, 42 Spacer material 4, 44 Spray stage 5, 45 Exhaust duct 6, 46 Damper 7, 47 Glass substrate 9, 49 Spray chamber 10, 50 Spray nozzle XY drive unit 11 Spray nozzle rotation drive unit 12 Main nozzle rotation center extension line trajectory 13 Sub nozzle tip extension line rotation trajectory 14 Rotation drive transmission shaft 101, 121 Main nozzle 102, 122 Sub nozzle

Claims (6)

[Claims] 1. A spacer spraying device for spraying a spacer material over the entire surface of a substrate supported substantially horizontally in a spray chamber through a spray nozzle having a function of rotating and swiveling, the spacer spray device having a lengthwise direction. A spacer spraying device characterized in that the shape is a shape other than a straight line. 2. The spraying nozzle comprises a main nozzle on a spacer material inflow side and a sub-nozzle on a spacer material sprinkling side, and the main nozzle and the sub-nozzles are linear segments connected at an angle to each other. 2. The spacer spraying device according to 1. 3. The spacer spraying apparatus according to claim 1, wherein the spraying nozzle comprises a main nozzle on the spacer material inflow side and a sub-nozzle on the spacer material spraying side connected to each other, and the sub-nozzle has at least a curved shape other than a linear shape. . 4. The main nozzle is set at a predetermined angle with respect to a vertical line of the substantially horizontally supported substrate, and a locus of an intersection of an extension line of the main nozzle and a surface of the substrate is an ellipse. 4. A swivel as far as possible to have a shape.
The spacer spraying device according to any one of the preceding claims. 5. The spacer spraying device according to claim 2, wherein the main nozzle rotates within a range of an angle of up to 40 ° in a plane perpendicular to a horizontal plane. 6. The spacer spraying apparatus according to claim 1, wherein said sub nozzle rotates around said main nozzle while said main nozzle is swirling above said substrate.