KR102503633B1 - Apparatus and method for dispensing materials - Google Patents

Abstract

The present invention includes a body portion having a supply pipe line, a nozzle portion mounted on a lower portion of the body portion and having discharge pipes formed therein, and a rotation shaft portion having a connection pipe capable of opening and closing the supply pipe line, which is installed to pass through the body portion in one direction. As a raw material ejection device and a raw material ejection method using the same, a raw material ejection device and method capable of smoothly ejecting a liquid raw material are proposed.

Description

Apparatus and method for dispensing raw materials {APPARATUS AND METHOD FOR DISPENSING MATERIALS}

The present invention relates to a raw material ejection device and method, and more particularly, to a raw material ejecting device and method capable of smoothly ejecting a liquid raw material to a plurality of positions on a substrate.

A liquid crystal display device is manufactured by dropping a certain amount of liquid crystal onto a lower substrate on which thin film transistors and pixel electrodes are formed, applying a sealant to an upper substrate on which a color filter and a common electrode are formed, and bonding the two substrates together. At this time, an ejection device is used as a means for dropping liquid crystal on the lower substrate (hereinafter, referred to as 'substrate').

For example, in Patent Document 1 below, a discharge device capable of discharging liquid in a fine size is proposed. In order to uniformly supply liquid crystal to a plurality of nozzles, the discharge device installs elastic sheets in the accommodation spaces of the body connected to the nozzles, compresses the elastic sheets with spherical members to shrink the volume of the accommodation spaces, The liquid crystal in the receiving spaces is moved to the nozzles.

However, when the liquid crystal is moved as described above, bubbles may be generated inside the nozzles, and it is difficult to make the discharge volume (discharge amount) uniform.

The background technology of the present invention is published in the following patent documents.

KR 10-2015-0130787 A

The present invention provides a raw material discharging device and method capable of suppressing or preventing the generation of bubbles.

The present invention provides a raw material discharge device and method capable of uniform discharge volume.

The present invention provides a raw material discharging device and method capable of reducing the discharging time.

A raw material discharge device according to an embodiment of the present invention includes a body portion having a supply pipe; a nozzle unit mounted on a lower portion of the body unit and having a plurality of discharge channels; and a connecting pipe installed to pass through the body, overlapping the supply pipe, and extending to a length covering an area where the discharge pipes are formed so as to open and close between the supply pipe and the plurality of discharge pipes. It includes; a rotation shaft portion is formed.

The supply conduit may be formed to pass through the body in a vertical direction, and the connection conduit may be formed to pass through the rotation shaft in a direction crossing the one direction.

The supply conduit and the connection conduit may overlap in the vertical direction and communicate with each other by rotation of the axis of the rotation shaft part.

A width of the connection pipe may be equal to a width of the supply pipe.

The discharge conduits are formed to pass through the nozzle unit in a vertical direction, are arranged in one direction, and a distance between discharge conduits at both ends of the discharge conduits may be smaller than a width of the supply conduit.

at least one supply barrier rib crossing the supply pipe in the other direction crossing the one direction and the vertical direction; It may include; at least one connection partition crossing the connection pipe in a direction crossing the one direction and the passage direction of the connection pipe.

The supply bulkhead partitions the inside of the supply pipe into a plurality of sections at a plurality of positions spaced apart in one direction, and the connection partition divides the inside of the connection pipe into a plurality of sections at a position vertically aligned with the supply bulkhead. can

a mounting portion mounted on an upper portion of the body portion and having a buffer pipe communicating with the supply pipe; a supply part spaced apart in the one direction and installed in the mounting part, and capable of introducing a liquid raw material into the buffer pipe; It may include; a sensing unit installed in the mounting part to detect the height of the raw material introduced into the inside of the buffer pipe.

The sensing unit may include a capacitance sensor and may be located on both sides of the buffer pipe.

The connection conduit may include a first conduit formed to pass through the rotation shaft portion and a second conduit formed to pass through the rotation shaft portion in a direction crossing the first conduit.

The first conduit and the second conduit may communicate with each other and may be formed in a cross shape on a cross section of the rotation shaft part.

A raw material discharging method according to an embodiment of the present invention is a raw material discharging method for discharging a raw material to a substrate, comprising: introducing the raw material into a supply pipe; Opening the supply pipe by first rotating the connecting pipe; discharging the raw material passing through the supply conduit and the connection conduit to the substrate through a plurality of discharge conduits; and closing the supply pipe by rotating the connection pipe on a second axis.

The process of introducing the raw material may include first introducing the raw material into a buffer pipe connected to an upper part of the supply pipe; It may include; a process of secondarily introducing the raw material into the supply pipe formed in the vertical direction.

The process of introducing the raw material may include: sensing a height of the raw material primarily introduced into the buffer pipe from both sides of the buffer pipe; The process of adjusting the opening time of the supply pipe according to the detection result; may include.

The process of opening the supply conduit may include rotating the connection conduit formed in a direction crossing one direction about an axis in one direction; and overlapping the connection conduit with the supply conduit in the vertical direction to communicate with each other, wherein the closing of the supply conduit includes rotating the connection conduit about an axis in one direction; It may include; a process of disconnecting the mutual communication by crossing the connection pipe and the supply pipe.

The process of closing the supply pipe may include storing raw material in the connection pipe, and after closing the supply pipe, opening the supply pipe, discharging the raw material, and the The process of closing the supply pipe may be sequentially and repeatedly performed.

The connecting conduit includes a first conduit and a second conduit formed to cross and communicate with each other, and in the process of storing the raw material, the raw material may be stored in the first conduit and the second conduit.

According to an embodiment of the present invention, by supplying a liquid raw material, such as liquid crystal, to the discharge channels of the nozzle unit using a rotation shaft portion having a slot-shaped connection pipe as a valve, it is possible to suppress or prevent bubbles from forming in the liquid crystal, , it is possible to uniformly and equally adjust the discharge volume of the liquid crystal discharged from the discharge conduits. In addition, by storing the liquid crystal in the connection pipe of the rotation shaft part, the discharge time, which is the time until the liquid crystal is discharged from the discharge pipes after the opening of the valve, can be reduced. That is, the opening/closing response of the valve can be made promptly. Accordingly, the liquid crystal can be smoothly discharged onto the substrate.

1 is a schematic diagram of a raw material discharging device according to an embodiment of the present invention.
2 is a longitudinal cross-sectional view of a raw material discharging device according to an embodiment of the present invention.
3 is a cross-sectional view of a raw material discharging device according to an embodiment of the present invention.
4 is a partial perspective view of a raw material discharging device according to an embodiment of the present invention.
5 is a partially exploded perspective view of a raw material discharge device according to an embodiment of the present invention.
6 is a perspective view and a cross-sectional view of a rotation shaft unit in which slot-shaped connecting pipes are formed according to a first modified example of the present invention.
7 is a longitudinal sectional view of a raw material discharging device according to a second modified example of the present invention.
8 is an operation diagram of a raw material discharging device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and will be implemented in a variety of different forms. Only the embodiments of the present invention are provided to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention. In order to explain an embodiment of the present invention, the drawings may be exaggerated, and the same reference numerals in the drawings refer to the same elements.

1 is a schematic diagram of a raw material discharging device according to an embodiment of the present invention. 2 is a longitudinal cross-sectional view of a raw material discharging device according to an embodiment of the present invention. 3 is a cross-sectional view of a raw material discharging device according to an embodiment of the present invention. 4 is a partial perspective view of a raw material discharging device according to an embodiment of the present invention. 5 is a partially exploded perspective view of a raw material discharge device according to an embodiment of the present invention.

A raw material discharging device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5 .

A raw material discharge device according to an embodiment of the present invention includes a body portion 100 having a supply pipe 110, a nozzle portion 200 mounted on a lower portion of the body portion 100 and having a plurality of discharge pipes 210 formed therein. , And is installed to pass through the body portion 100, can overlap with the supply pipe 110, to open and close between the supply pipe 110 and the plurality of discharge pipes 210, the discharge pipe 210 It includes a rotation shaft portion on which a connection pipe 310 extending to a length capable of covering the formed area is formed. In addition, the raw material discharge device is mounted on the upper part of the body part 100 and is spaced apart in one direction from the mounting part 400 having a buffer pipe 410 communicating with the supply pipe 110 and installed on the mounting part 400, , A supply unit 500 capable of introducing a liquid raw material into the buffer pipe 410 may be further included.

Here, the body part 100 may be a body part 100 having a slot-shaped supply pipe 110 extending in one direction (Y-axis direction). The nozzle unit 200 may be a nozzle unit 200 mounted on a lower portion of the body unit 100 and formed with hole-shaped discharge channels 210 communicating with the supply channel 110 . The rotation shaft part 300 is installed to penetrate the body part 100 in one direction, overlaps the supply pipe 110, and has a slot-shaped connection pipe 310 capable of opening and closing the supply pipe 110. It may be the rotation shaft part 300 .

The mounting part 400 may be a mounting part 400 mounted on the upper part of the body part 100 and having a slot-shaped buffer pipe 410 communicating with the supply pipe 110 . Further, the supply unit 500 may be a supply unit 500 that is spaced apart in one direction and is installed on the mounting unit 400 and allows liquid raw material to flow into the buffer pipe 410 .

The raw material may include a liquid crystal. Of course, the raw material is not limited to liquid crystal, and various materials can be applied. Meanwhile, the raw material discharging device may also be used as a device for discharging various substances, for example, liquid materials instead of raw materials. That is, the raw material discharging device may discharge various materials other than the raw material.

The body part 100 may be spaced apart from an upper side of a stage (not shown) on which a substrate (not shown) is seated. The substrate may be, for example, a substrate on which thin film transistors and pixel electrodes are formed. Of course, the substrate is not limited to the above, and various substrates are applicable. In addition, the raw material ejection device may eject various materials to various processing objects other than the substrate.

The body part 100 is supported by a horizontal moving unit (not shown) and can move horizontally by the horizontal moving unit. Horizontal movement may include movement in one direction and movement in another direction (X-axis direction). Meanwhile, the installation structure and operating method of the horizontal moving unit are not particularly limited.

One direction may be referred to as a left-right direction, and the other direction may be referred to as a front-back direction. One direction and the other direction may be collectively referred to as a horizontal direction. Of course, the definition of direction can vary. For example, one direction may be referred to as a first axis direction, and the other direction may be referred to as a second axis direction. In this case, the vertical direction may be referred to as the third axis direction.

The body portion 100 may have, for example, a prism shape extending in one direction. Of course, the body part 100 may have various shapes. A flange may be formed on an upper portion of the body portion 100 . A supply pipe 110 may be formed in the body part 100 .

The supply conduit 110 may have a slot shape extending in one direction. The supply conduit 110 may be formed to penetrate the body part 100 in a vertical direction (Z-axis direction). The supply conduit 110 may have a narrower width (also referred to as 'thickness') in other directions from top to bottom. The shape of the supply pipe 110 may vary.

The upper inlet of the supply pipe 110 may be located on the upper surface of the body part 100 and the lower outlet may be located on the lower surface of the body part 100 . Meanwhile, a sealing groove 140 may be formed on an upper surface of the body portion 100 . The sealing groove 140 may be formed in a ring shape by surrounding the upper inlet of the supply pipe 110 . A sealing 130 may be provided in the sealing groove 140 . The sealing 130 serves to seal between the upper surface of the body part 100 and the lower surface of the mounting part 400 .

The supply pipe 110 may pass the raw material downward. The raw material passing through the supply pipe 110 may be discharged to the substrate through the nozzle unit 200 in the form of droplets.

The nozzle unit 200 may have a bar or plate shape extending in one direction. The nozzle part 200 may be mounted on the lower part of the body part 100 . More specifically, a concave groove may be formed on a lower surface of the body portion 100 in one direction. At this time, the nozzle unit 200 may be inserted into the concave groove. That is, the nozzle unit 200 may be mounted on the lower surface of the body unit 100 .

The width (also referred to as 'length') of the nozzle unit 200 in one direction may be the same as the width of the body part 100 in one direction, and the width in the other direction may be smaller than the width of the body part 100 in the other direction. Of course, this size relationship is only an example for description of the embodiment. That is, the above-described size relationship may be variously changed. Meanwhile, a seal (not shown) may be provided on a contact surface between the nozzle unit 200 and the concave groove.

The discharge conduits 210 may be formed in a hole shape. The discharge conduits 210 may be formed to penetrate the nozzle unit 200 in a vertical direction. At this time, the discharge conduits 210 may be arranged in one direction. The discharge conduit 210 may communicate with the lower outlet of the supply conduit 110 . In this case, one supply pipe 110 may correspond to a plurality of discharge pipes 210 . That is, the plurality of discharge conduits 210 may receive raw materials from one supply conduit 110 .

Among the discharge conduits 210 , the maximum distance between discharge conduits at both end portions, for example, discharge conduits arranged at the outermost part may be smaller than the width of the supply conduit 110 in one direction. In this case, the outermost discharge channels refer to discharge channels located closest to both edges of the nozzle unit 200 in one direction.

The outermost discharge conduits may be arranged at positions spaced apart from each other by a predetermined length in a direction from both edges of one direction of the supply conduit 210 toward the center of one direction. Therefore, the outermost discharge pipes and the innermost discharge pipes can receive the raw material falling at the same speed. The raw material passing through the supply conduit 110 may pass through the discharge conduit 210 and be discharged to the substrate in the form of droplets. At this time, a valve may be provided in the body part 100 to regulate the discharge of the raw material.

In an embodiment of the present invention, the rotation shaft unit 300 in which the connection pipe 310 is formed in a slot shape may be used as the valve described above. Therefore, in the embodiment of the present invention, it is possible to suppress or prevent the generation of bubbles in the raw material, to uniformly and equally adjust the discharge volume of the raw material, and to transfer the raw material stored in the connection pipe 310 to the discharge pipe 210. The discharge time can be reduced by supplying it quickly.

The rotation shaft unit 300 may be referred to as a rotation shaft valve or simply as a valve.

The rotation shaft part 300 may have a cylindrical shape extending in one direction. The rotation shaft unit 300 may be installed to pass through the lower portion of the body unit 100 in one direction from the upper side of the nozzle unit 200 . More specifically, the valve mounting hole 150 may be formed through the lower part of the body 100 in one direction. In addition, the rotation shaft unit 300 may be inserted into the valve mounting hole 150 so as to be axially rotatable about an axis in one direction. A seal (not shown) may be provided between the outer circumferential surface of the rotation shaft unit 300 and the inner circumferential surface of the valve mounting hole 150 .

One end of the rotation shaft part 300 in one direction may protrude outward from the body part 100 . A motor (not shown) may be connected to the protrusion (ie, one end) of the rotation shaft unit 300, and rotation of the shaft in one direction may be precisely controlled by the motor.

The rotation shaft part 300 may overlap the supply pipe 110 . That is, the rotation shaft unit 300 may be disposed to cross the lower portion of the supply pipe 110 in one direction. At this time, the width of the rotation shaft unit 300 in one direction may be greater than the width of the supply pipe 110 in one direction.

A slot-shaped connection pipe 310 capable of opening and closing the supply pipe 110 may be formed in the rotation shaft unit 300 . In this case, the connection conduit 310 may be extended to a length capable of covering an area where the discharge conduit 210 is formed so as to open and close between the supply conduit 110 and the discharge conduit 210 .

That is, the connection conduit 310 may extend in one direction, which is the same direction as the direction in which the supply conduit 110 extends. Also, the width of the connection pipe 310 in one direction and the width of the supply pipe 110 in one direction may be equal to each other. The raw material may pass through the upper part of the supply pipe 110 and flow into the connection pipe 310 and be supplied to the discharge pipes 210 through the lower part of the supply pipe 110 . As one connection pipe 310 corresponds to the discharge pipes 210, the discharge pipes 210 may receive the raw material passing through the one connection pipe 310. Thus, the discharge amount of the raw material discharged from the discharge conduits 310 can be uniformly adjusted and can be equally adjusted.

The connection conduit 310 may be formed to pass through the rotation shaft unit 300 in a direction crossing one direction. At this time, the direction crossing one direction may include a vertical direction and another direction. In addition, the direction crossing one direction may further include various directions crossing one direction while forming a predetermined angle with a vertical direction or another direction. The direction in which the connection conduit 310 penetrates may vary according to an axial rotation angle of the rotation shaft unit 300 . For example, the penetration direction of the connection pipe 310 may be a vertical direction or another direction according to the axis rotation angle of the rotation shaft unit 300, and crosses in one direction while forming a predetermined angle with the vertical direction or the other direction It may be a predetermined direction. That is, the connection conduit 310 may be formed to pass through the rotation shaft unit 300 in one direction selected from among directions crossing one direction.

Meanwhile, the connection conduit 310 may have a narrower interval in one direction and in a direction crossing the penetration direction as it goes from one side to the other side of the penetration direction. More specifically, when the through direction of the connection pipe 310 is the vertical direction, the width of the connection pipe 310 may become narrower in other directions from the upper end to the lower end.

Here, when the connecting conduit 310 is aligned in the vertical direction such that one side with a wide interval is higher than the other side with a narrow interval, the inner wall of the supply conduit 110 and the inner wall of the connecting conduit 310 can be smoothly connected , There is no step difference between the inner wall of the supply pipe 110 and the inner wall of the connection pipe 310.

The connection conduit 310 rotates around an axis in one direction to open and close the supply conduit 110, and the discharge conduit 210 receives liquid raw material from the supply conduit 110 and discharges it downward. This is explained in more detail below.

The supply conduit 110 and the connection conduit 310 overlap each other in the vertical direction by the axis rotation of the rotation shaft unit 300 and may communicate with each other. Meanwhile, the shaft rotation at this time is called primary shaft rotation. That is, when the rotation shaft unit 300 rotates in a predetermined rotational direction so as to overlap the supply conduit 110 and the connection conduit 310 in the vertical direction, this rotation of the shaft is referred to as primary shaft rotation. . In addition, the state of communication between the supply pipe 110 and the connection pipe 310 at this time is referred to as a valve open (open) state.

On the other hand, the supply conduit 110 and the connection conduit 310 may intersect while forming a predetermined angle due to the axial rotation of the rotation shaft unit 300, and mutual communication may be released. The axis rotation at this time is called secondary axis rotation. That is, when the rotation shaft part 300 pivots in a predetermined rotation direction so that the supply conduit 110 and the connection conduit 310 intersect at a predetermined angle, such rotation of the shaft is referred to as secondary shaft rotation. In addition, the communication release state between the supply pipe 110 and the connection pipe 310 at this time is referred to as a valve closed (closed) state.

That is, the supply conduit 110 may be opened and closed by rotation of the primary and secondary shafts of the rotation shaft unit 300 . When the supply conduit 110 is opened by the connection conduit 310 , the raw material may be supplied to the discharge conduit 210 . Also, when the supply pipe 110 is closed, the raw material is not supplied to the discharge pipe 210 . At this time, the raw material may be stored in the connecting pipe 310 . Then, when the supply pipe 110 is opened by the connection pipe 310, the raw material stored in the connection pipe 310 is preferentially supplied to the discharge pipe 210, and the raw material passing through the supply pipe 110 It may be supplied to the discharge pipes 210 through the connection pipe 310 .

Meanwhile, the raw material discharge device according to the embodiment of the present invention may further include a supply partition wall 120 and a connection partition wall 320 . In detail, the supply partition wall 120 and the connection partition wall 320 may be provided inside the supply pipe 110 and the connection pipe 310, respectively, while suppressing the flow of the raw material in the other direction, in the vertical direction of the raw material. serves to stabilize the flow of

The supply partition wall 120 may be formed inside the supply pipe 110 to cross the supply pipe 110 in one direction and in the other direction, which is a direction crossing the vertical direction. Here, at least one supply barrier rib 120 may be formed. In the embodiment of the present invention, two supply bulkheads are exemplified. The supply bulkhead 120 may partition the inside of the supply pipe 110 into a plurality of sections at a plurality of positions spaced apart in one direction. Widths of the plurality of sections in one direction may vary or may be equal to each other. The upper and lower portions of the supply partition 120 may have different widths in one direction. For example, the upper portion of the supply bulkhead 120 may be wider in one direction and the lower portion may be narrower in one direction. At this time, the upper surface of the supply partition wall 120 may be convex upward, and the lower surface may be flat. That is, the supply bulkhead 120 may have, for example, an airfoil shape having a symmetric cross section in one direction.

At least one connection partition wall 320 may be formed inside the connection pipe 310 to cross the connection pipe 310 in one direction and in a direction crossing the penetration direction of the connection pipe 310 . For example, the number of connection barrier ribs 320 may be the same as the number of supply barrier ribs 120 . The connection partition wall 320 may partition the inside of the connection pipe 320 into a plurality of sections at a position aligned with the supply partition wall 120 in the vertical direction. That is, the connection partition wall 320 may be formed directly under the supply partition wall 120 to partition the inside of the connection pipe 320 into a plurality of sections. The connection partition wall 320 may have an upper portion wider in one direction than a lower portion in one direction. At this time, the connection partition wall 320 may have a trapezoidal cross-section in one direction. When the rotation shaft unit 300 rotates the primary shaft, the supply partition wall 120 and the connection partition wall may be connected in a vertical direction.

The mounting portion 400 may have a block shape extending in one direction. The mounting part 400 may be mounted on the upper part of the body part 100 . More specifically, the mounting part 400 may be mounted on the upper surface of the body part 100 . The mounting part 400 serves to connect the body part 100 and the supply part 500, for example, a raw material supply port.

A slot-shaped buffer pipe 410 communicating with the supply pipe 110 may be formed in the mounting portion 400 . At this time, the buffer conduit 410 may be formed to pass through the lower surface of the mounting part 400 upward and may extend in one direction. The buffer conduit 410 may be formed below the mounting part 400 . The buffer conduit 410 and the supply conduit 110 may be aligned in the vertical direction to communicate with each other. The width of the buffer pipe 410 in one direction may be the same as the width of the supply pipe 110 in one direction. The shape of the buffer conduit 410 may be various other than the slot shape.

A plurality of supply units 500 are provided, spaced apart from each other in one direction, and may be installed to pass through the top of the mounting unit 400 . The supply unit 500 serves to introduce raw materials into the buffer pipe 410 . To this end, an inflow conduit 520 may be formed to pass through the supply unit 500 in the vertical direction. An upper end of the inflow conduit 520 may be connected to a raw material supply pipe (not shown), and the raw material supply pipe may be connected to a raw material supply source. The raw material supply source may supply the raw material to the raw material supply pipe in an air pressurized manner. The raw material may be supplied from the raw material supply pipe to the inlet pipe 520 by air pressure. A lower end of the inlet pipe 520 may be connected to the buffer pipe 410 . The raw material passing through the inlet pipe 520 may be accommodated in the buffer pipe 410 .

Meanwhile, a screw thread 510 may be formed on a lower outer circumferential surface of the supply unit 500 . The supply unit 500 may be screwed to the mounting unit 400 through a screw thread 510 . To support the coupling between the supply unit 500 and the mounting unit 400, a coupling member 530, for example, a bolt, may be provided on the upper side of the lower outer circumferential surface of the supply unit 500.

6 (a) and (b) are perspective and cross-sectional views of a rotation shaft part according to a first modified example of the present invention. Referring to Fig. 6, a raw material discharging device according to a first modified example of the present invention will be described in detail.

According to the first modified example of the present invention, the shape of the connection pipe of the rotation shaft unit 300A may be different from that of the rotation shaft unit 300 of the above-described embodiment. For example, the connection pipe according to the first modified example of the present invention may be formed to pass through the rotation shaft portion 300A in a plurality of mutually intersecting directions while crossing one direction.

That is, the connection conduit is a first conduit 310 formed to penetrate the rotation shaft portion 300 in a direction crossing one direction, and a rotation shaft portion in one direction and a direction crossing the penetration direction of the first conduit 310 It may include a second conduit 330 formed to pass through (300). The first conduit 310 and the second conduit 330 may be formed to communicate with each other at the center of the rotation shaft part 300A. Specifically, the first conduit 310 and the second conduit 330 may be orthogonal to each other so as to form a cross shape on the cross section of the rotation shaft portion 300A.

As the raw material is stored inside the first conduit 310 and the second conduit 330, more raw materials can be stored, and even if the rotation angle of the rotation shaft part 300A is reduced by half than in the case of the embodiment, the supply conduit Since the connection between 110 and the connecting pipe is possible, switching between the valve open state and the valve closed state may be faster than in the embodiment. In addition, the distance between the first conduit 310 and the distance between the second conduit 330 may be formed differently so that the discharge speed of the raw material is different from each other, and also, the inner wall of the first conduit 310 and the second conduit 310 may have different sizes. The slopes of the inner walls of the two conduits 330 may be different from each other.

7 is a longitudinal sectional view of a raw material discharging device according to a second modified example of the present invention. Referring to Fig. 7, a raw material discharging device according to a second modified example of the present invention will be described in detail.

The raw material discharging device according to the second modified example of the present invention may further include a sensing unit 600 . The sensing unit 600 may be installed on the mounting unit 400 to detect the height of the raw material introduced into the buffer pipe 410 . The sensing unit 600 may include a capacitance sensor. Of course, as long as the sensing unit 600 is a sensor capable of detecting the height of the raw material inside the buffer pipe 410, various sensors may be employed. The capacitance sensors may be installed on sidewalls of the mounting part 400 so as to be located on both sides of the buffer pipe 410 in one direction.

8 is an operation diagram of a raw material discharging device according to an embodiment of the present invention. Figure 8 (a) is an operation diagram showing a valve closed (closed) state of the rotation shaft, and also, Figure 8 (b) is an operation diagram showing a valve open (open) state of the rotation shaft.

Referring to FIGS. 1 to 8 , a raw material discharging method according to an embodiment of the present invention will be described in detail.

A raw material discharge method according to an embodiment of the present invention is a raw material discharge method for discharging the raw material to a substrate, the process of introducing the raw material into the supply pipe, the process of opening the supply pipe by first rotating the connection pipe, the supply pipe and The process of discharging the raw material passing through the connection pipe to the substrate through the plurality of discharge pipes, and the process of closing the supply pipe by rotating the connection pipe on a second axis.

Here, the raw material is a liquid raw material and may include a liquid crystal. Of course, the raw material discharge method may be used to discharge various materials other than the raw material.

First, a substrate (not shown) is placed on a stage (not shown) disposed below the raw material discharge device.

Thereafter, a process of introducing the raw material L into the supply pipe 110 is performed. That is, the raw material (L) is introduced into the slot-shaped supply pipe 110 extending in one direction. The raw material is pressurized and supplied to the buffer pipe 410 side of the mounting part 400 through the supply part 500 . Then, the raw material (L) is primarily introduced into the slot-shaped buffer pipe 410 extending in one direction and connected to the top of the supply pipe 110 . Then, the raw material L is secondarily introduced into the supply pipe 110 formed in the vertical direction. The rotation shaft unit 300 maintains a valve closed state. The raw material (L) may be accommodated in the upper part of the supply pipe 110 and the buffer pipe 410 .

Subsequently, during the process of secondarily introducing the raw material L, the sensor 600 detects the height of the raw material L primarily introduced into the buffer pipe 410 from both sides of the buffer pipe 410. In addition, the opening time of the supply pipe 110 is adjusted according to the sensing result of the sensing unit 600 .

That is, the height of the raw material in the buffer pipe 410 is sensed by the sensor 600, and when the height is satisfied, the rotation shaft unit 300 may be switched to a valve open state. On the other hand, the sensor 600 detects the height of the raw material, and when the detected height of the raw material is non-uniform in one direction, the supply of the raw material from the raw material supply source to each supply unit 500 is adjusted to control the height of the raw material to be uniform in one direction. can

Thereafter, a process of opening the supply pipe 110 is performed by rotating the connection pipe 310 on a primary axis. That is, the supply conduit 110 is opened by primary axis rotation of the slot-shaped connection conduit 310 disposed to cross the supply conduit 110 in one direction. Specifically, the connection pipe 310 formed in a direction crossing one direction is rotated about a primary axis around an axis in one direction. Then, the connection conduit 310 overlaps the supply conduit 110 in the vertical direction to communicate with each other.

Thereafter, a process of discharging the raw material (L) passing through the supply conduit 110 and the connection conduit 310 to the substrate through the plurality of discharge conduits 210 is performed. That is, the raw material L is discharged in the form of droplets L' to the substrate through the hole-shaped discharge channels 210 connected to the lower portion of the supply channel 110 .

Thereafter, a process of closing the supply pipe by rotating the connection pipe 310 on a second axis is performed. That is, the connection pipe 310 is rotated about an axis in one direction, and the connection pipe 310 and the supply pipe 110 cross each other to release mutual communication.

During this process, a process of storing the raw material L in the connecting pipe 310 may be performed. At this time, when performing this process using the raw material discharge device according to the first modified example, as the connection pipes include the first pipe 310 and the second pipe 330 formed to cross and communicate with each other, Raw materials may be stored in the first conduit 310 and the second conduit 330 crossing each other in the form. Of course, in the case of the embodiment, the raw material (L) can be stored in one connection pipe (310).

After closing the supply conduit 110, the process of opening the supply conduit 110, the process of discharging the raw material, and the process of closing the supply conduit 110 are sequentially and repeatedly performed, and the raw material is dropped on the desired area on the substrate. can make it

According to the embodiment of the present invention, it is possible to suppress or prevent the generation of bubbles in the raw material, to uniformly and equally adjust the discharge volume of the raw material, and to reduce the time required to discharge the raw material. Accordingly, the liquid crystal can be smoothly discharged onto the substrate.

The above embodiments of the present invention are for explanation of the present invention and are not intended to limit the present invention. It should be noted that the configurations and methods disclosed in the above embodiments of the present invention may be modified in various forms by combining or crossing each other, and such modified examples may also be considered within the scope of the present invention. That is, the present invention will be implemented in a variety of different forms within the scope of the claims and equivalent technical ideas, and various embodiments are possible within the scope of the technical idea of the present invention by those skilled in the art to which the present invention pertains. will be able to understand

100: body part 110: supply pipe
200: nozzle part 210: discharge pipe
300: rotation shaft part 310: connection pipe
400: mounting part 410: buffer pipe
500: supply unit 520: inlet pipe

Claims (17)

A body portion in which a supply pipe is formed;
a nozzle unit mounted on a lower portion of the body unit and having a plurality of discharge channels;
It is installed to pass through the body in one direction, overlaps with the supply pipe, and extends to a length capable of covering the area where the discharge pipes are formed so as to open and close between the supply pipe and the plurality of discharge pipes. a rotation shaft portion having a connection pipe;
a mounting portion mounted on an upper portion of the body portion and having a buffer pipe communicating with the supply pipe;
a supply part spaced apart in the one direction and installed in the mounting part, and capable of introducing a liquid raw material into the buffer pipe; and
Raw material discharge device comprising a; sensing unit installed in the mounting portion to detect the height of the raw material introduced into the buffer pipe. The method of claim 1,
The supply pipe is formed to pass through the body in a vertical direction,
The connecting pipe is formed to pass through the rotation shaft in a direction crossing the one direction. The method of claim 2,
The raw material discharging device in which the supply pipe and the connection pipe overlap in the vertical direction and communicate with each other by rotation of the axis of the rotation shaft part. The method of claim 1,
A raw material discharge device in which the width of the connection pipe and the width of the supply pipe are equal to each other. The method of claim 4,
The discharge conduits are formed to pass through the nozzle unit in a vertical direction and are arranged in one direction,
A raw material discharging device wherein a distance between the discharge conduits at both ends of the discharge conduits is smaller than a width of the supply conduit. The method of claim 2,
at least one supply barrier rib crossing the supply pipe in the other direction crossing the one direction and the vertical direction;
Raw material discharge device comprising a; at least one connection partition crossing the connection pipe in a direction crossing the one direction and the passage direction of the connection pipe. The method of claim 6,
The supply bulkhead divides the inside of the supply pipe into a plurality of sections at a plurality of positions spaced apart in one direction,
The connection partition wall divides the inside of the connection pipe into a plurality of sections at a position aligned with the supply partition wall in the vertical direction. delete The method of claim 1,
The sensing unit includes a capacitance sensor and is positioned on both sides of the buffer pipe, respectively. A body portion in which a supply pipe is formed;
a nozzle unit mounted on a lower portion of the body unit and having a plurality of discharge channels; and
It is installed to pass through the body in one direction, overlaps with the supply pipe, and extends to a length capable of covering the area where the discharge pipes are formed so as to open and close between the supply pipe and the plurality of discharge pipes. Including; a rotation shaft portion in which a connection pipe is formed;
The supply pipe is formed to pass through the body in a vertical direction,
The connecting conduit is formed to pass through the rotation shaft in a direction crossing the one direction,
The connecting conduit includes a first conduit formed to pass through the rotation shaft portion and a second conduit formed to pass through the rotation shaft portion in a direction crossing the first conduit. The method of claim 10,
The first conduit and the second conduit are formed to communicate with each other and are formed in a cross shape on the cross section of the rotation shaft part. As a raw material discharge method for discharging the raw material to a substrate,
The process of introducing the raw material into the supply pipe;
Opening the supply pipe by first rotating the connecting pipe;
discharging the raw material passing through the supply conduit and the connection conduit to the substrate through a plurality of discharge conduits;
Including; closing the supply pipe by rotating the connection pipe on the second axis;
The process of introducing the raw material,
first introducing the raw material into a buffer pipe connected to an upper part of the supply pipe;
Secondary inflow of the raw material into the supply pipe formed in the vertical direction;
detecting the height of the raw material primarily introduced into the buffer pipe from both sides of the buffer pipe;
Controlling the opening time of the supply pipe according to the detection result; raw material discharge method comprising a. delete delete The method of claim 12,
The process of opening the supply pipe,
rotating the connection pipe formed in a direction crossing one direction about an axis in one direction;
Including; overlapping the connection pipe in the vertical direction with the supply pipe to communicate with each other;
The process of closing the supply pipe,
Rotating the connecting pipe around an axis in one direction;
Raw material discharge method comprising the; step of intersecting the connection pipe and the supply pipe to release mutual communication. The method of claim 15
The process of closing the supply pipe,
Including; storing raw materials in the connection pipe;
After the process of closing the supply pipe,
A raw material discharge method for sequentially and repeatedly performing the process of opening the supply pipe, the process of discharging the raw material, and the process of closing the supply pipe. As a raw material discharge method for discharging the raw material to a substrate,
The process of introducing the raw material into the supply pipe;
Opening the supply pipe by first rotating the connecting pipe;
discharging the raw material passing through the supply conduit and the connection conduit to the substrate through a plurality of discharge conduits;
Including; closing the supply pipe by rotating the connection pipe on the second axis;
The process of closing the supply pipe,
Including; storing raw materials in the connection pipe;
The connecting conduit includes a first conduit and a second conduit formed to cross and communicate with each other,
The process of storing the raw material,
A raw material discharge method for storing raw materials in the first conduit and the second conduit.

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