KR101115916B1 - Paste dispenser and method for controlling the same - Google Patents

Abstract

The paste dispenser according to the present invention has a structure that can reduce the distance in the X-axis direction between the nozzles when a plurality of head units are adjacent, the paste dispenser can efficiently form a variety of patterns on the substrate It works.

Paste, dispenser

Description

Paste Dispenser and Control Method {PASTE DISPENSER AND METHOD FOR CONTROLLING THE SAME}

The present invention relates to a paste dispenser for forming a paste pattern on a substrate and a control method thereof.

The paste dispenser is a device for applying paste in a predetermined pattern on a substrate for adhesion or sealing of substrates in the manufacture of various flat panel displays (FPD).

As shown in FIGS. 1 to 3, the paste dispenser includes a head unit 80 equipped with a syringe 82 in which the paste is accommodated and a nozzle 83 in which the paste is discharged, and the head unit 80. Interposed between the head support 89 and the head support unit 80 and the head support unit 89 so as to be movable, the head unit 80 is extended in the direction in which the head support unit 89 extends (X-axis direction). It comprises a X-axis drive device 90 for moving. The head unit 80 includes a light emitting part 841 for emitting a laser and a light receiving part 842 for receiving a laser that is emitted from the light emitting part 841 and reflected on the upper surface of the substrate S. The laser displacement sensor 84 which measures the space | interval between (S) is provided.

The X-axis driving device 90 is composed of a movable portion 91 on which the head unit 80 is supported, and a fixing portion 92 arranged along the longitudinal direction of the head support 89, and the movable portion 91 and the high portion. The head unit 80 may move in the longitudinal direction of the head support 89 by the interaction of the government unit 92.

As such, the X-axis driving device 90 serves to move the head unit 80 in the longitudinal direction of the head support 89, the size of the movable portion 91 is the weight of the head unit 80, syringe ( It is decided according to the magnitude | size of the load which the movable part 91 moves, such as paste accommodation capacity of 82). In order to smoothly move the head unit 80, the width Wm in the X-axis direction of the movable unit 91 is inevitably larger than the width Wh in the X-axis direction of the head unit 80. As shown in FIG. 3, when the plurality of head units 80 are adjacent to each other at maximum, the minimum distance between the plurality of head units 80 is, that is, the nozzle 83 provided in the plurality of head units 80. The minimum distance Wn therebetween is influenced by the width Wm of the movable part 91 in the X-axis direction.

Therefore, the gap DPW of the paste pattern P formed on the substrate S is maintained while maintaining the gap Wn between the nozzles 81 when the plurality of head units 80 are adjacent to each other at the minimum distance. In the case where it is necessary to form the paste pattern P having a smaller spacing DPN compared with the above, it is difficult to form the paste pattern P while simultaneously moving the plurality of head units 80, and thus the plurality of head units 80. To move alternately to form a pattern 90, or to use a single head unit 80 to form a plurality of patterns 90 is a constraint follows.

On the other hand, in order to solve the above problems can be considered a method of reducing the size of the movable portion 91, in this case, since the driving force of the movable portion 91 is small enough to not properly move the head unit 80, The head unit 80 may not be moved smoothly, causing vibration and other problems.

As described above, there is a problem in that there is a limit in reducing the interval of the paste pattern P formed on the substrate S due to the width Wm of the conventional movable portion 91 in the X-axis direction.

The present invention is to solve the above problems of the prior art, by providing a paste dispenser capable of efficiently forming a variety of patterns on the substrate by minimizing the distance in the X-axis direction between the nozzles from which the paste is discharged There is.

Paste dispenser according to the present invention for achieving the above object, the first support member is installed on the head support, and is installed between the head support and the support member to move the support member in the longitudinal direction of the head support A drive unit, a head ejecting nozzle is provided, and two or more head units are provided in one support member, and are installed between the support member and the head unit to move the head unit in the longitudinal direction of the head support. It may be configured to include a second drive unit.

Here, the driving force of the second driving unit is preferably smaller than the driving force of the first driving unit.

The second driving unit includes a movable part to which at least one head unit of the plurality of head units is coupled, and a fixing part disposed on the support member and connected to the movable part, and in the longitudinal direction of the head support. Preferably, the movable portion has a width equal to or less than the width of the head unit in the longitudinal direction of the head support.

In addition, the paste dispenser according to the present invention, the second driving unit to move the at least one head unit of the two or more head units to adjust the distance between the two or more head units installed in the support member It may further comprise a control device for controlling the operation of.

In addition, the control method of the paste dispenser according to the present invention, the support member is installed on the head support, and the first drive unit is installed between the head support and the support member to move the support member in the longitudinal direction of the head support And a nozzle for discharging the paste, the head unit being provided in two or more on one support member, and installed between the support member and the head unit to move the head unit in the longitudinal direction of the head support. A control method of a paste dispenser including a second driving unit, the control method comprising: (a) operating the second driving unit so that the distance between the two or more head units installed in the support member is adjusted; Moving at least one of the head units, and (b) operating the first driving unit to control the two or more heads. And discharging the paste from the nozzle while moving the supporting member in which the unit is installed in the longitudinal direction of the head support to form a paste pattern on the substrate.

The paste dispenser according to the present invention can minimize the gap between the nozzles of the plurality of head units, thereby effectively forming various paste patterns on the substrate.

Referring to the accompanying drawings, a preferred embodiment of the paste dispenser and its control method according to the present invention will be described.

As shown in FIGS. 4 and 5, the paste dispenser according to the present invention includes a frame 10, a stage 20 mounted on the frame 10 and a substrate S mounted thereon, and a stage 20. A pair of support movement guides 30 are installed on both sides of the support and extend in the Y-axis direction, and both ends are supported by a pair of support movement guides 30 so as to be installed on the top of the stage 20 and extend in the X-axis direction. It may be configured to include a head support 40, a head unit 50 which is installed in the head support 40 to be movable in the X-axis direction, and a control device (not shown) for controlling the paste coating operation.

On the frame 10, an X-axis moving device 21 for moving the stage 20 in the X-axis direction may be installed, and a Y-axis moving device 22 for moving the stage 20 in the Y-axis direction is installed. Can be. That is, the Y-axis guide 221 of the Y-axis moving device 22 is installed on the frame 10, and the X-axis guide 211 of the X-axis moving device 21 is installed above the Y-axis moving device 22. The stage 20 may be seated on the X-axis guide 211. By such a configuration, the stage 20 may be guided by the X-axis guide 211 and moved in the X-axis direction, and the X-axis guide 211 is guided and moved by the Y-axis guide 221 to the Y-axis. Can be moved in a direction. On the other hand, the present invention is not limited to the configuration that the Y-axis guide 221 is installed on the upper portion of the frame 10 and the X-axis guide 211 is seated on the upper portion of the Y-axis guide 221, the frame 10 The X-axis guide 211 is installed on the upper portion and the configuration that the Y-axis guide 221 is seated on the upper portion of the X-axis guide 211 may be applied. Of course, only one of the X-axis moving device 21 and the X-axis guide 211 and the Y-axis moving device 22 and the Y-axis guide 221 is applied, so that the stage is in the X-axis direction and the Y-axis direction. The configuration of moving only in either direction may be applied.

Both ends of the head support 40 may be installed with a support for moving the support 41 is connected to the support guide movement guide (30). By the interaction of the support movement guide 30 and the support movement device 41, the head support 40 can be moved in the longitudinal direction of the support movement guide 30, that is, the Y-axis direction. Accordingly, the head unit 50 may be moved in the Y-axis direction by the movement of the head support 40 in the Y-axis direction.

The head unit 50 is a syringe 52 for filling the paste, a nozzle 53 in communication with the syringe 52 to discharge the paste, and a laser for measuring the distance between the nozzle 53 and the substrate S. It may be configured to include a displacement sensor 54. The laser displacement sensor 54 may include a light emitting unit 541 for emitting a laser and a light receiving unit 542 for receiving a laser emitted from the light emitting unit 541 and reflected from an upper surface of the substrate S.

Such, the head unit 50 may be installed in plurality in the head support 40, a configuration that can minimize the gap between the plurality of head unit 50 as follows.

As shown in Figure 5 to 8, the paste dispenser according to the present invention, the support member 100 is installed to be movable in the longitudinal direction of the head support 40 to the head support 40, the head support ( The first driving unit 60 may be installed between the support member 100 and the support member 100 to move the support member 100 in the longitudinal direction (X-axis direction) of the head support 40. Such, the support member 100, as shown in Figure 7, may be installed in a plurality of head support (40).

In addition, one support member 100 is provided with a plurality of head unit 50, the head unit 50 between the support member 100 and the head unit 50 in the longitudinal direction of the head support (40) ( A second driving unit 70 for moving in the X-axis direction may be further included.

In FIG. 5, in the embodiment of the present invention, two head units 50 are provided in one support member 100, but the present invention is not limited thereto. As shown in FIG. 6, one Three head units 50 may be installed on the support member 100, and a larger number of head units 50 may be installed.

The first drive unit 60 may include a movable part 61 to which the support member 100 is coupled, and a fixing part 62 disposed along the longitudinal direction (X-axis direction) of the head unit 50. Can be. The first driving unit 60 may be applied to various configurations for linearly moving the support member 100, such as a linear motor, a ball screw mechanism. Accordingly, the support unit 100 and the head unit 50 installed on the support member 100 are moved in the X axis direction by the movable part 61 being moved in the X axis direction by the interaction with the fixing part 62. Can be.

The first driving unit 60 serves to move the plurality of head units 50 in the process of applying the paste on the substrate (S). The control device operates the first drive unit 60 to move the support member 100 provided with two or more head units 50 in the longitudinal direction of the head support 40 while discharging the paste from the nozzle 53 to form a substrate. The operation of forming the paste pattern on (S) is controlled.

In addition, the second driving unit 70 may include a movable part 71 coupled to the head unit 50, and a fixing part 72 disposed in the X-axis direction on the support part material 100. The second driving unit 70 may be applied in various configurations to linearly move the head unit 50 with respect to the support member 100, such as a linear motor, a ball screw mechanism. Accordingly, the head unit 50 can be moved in the X-axis direction with respect to the support member 100 by moving the movable part 71 in the X-axis direction by the interaction with the fixing part 72.

The second driving unit 70 may include a plurality of head units (such as a gap Wn between the nozzles 53) between the plurality of head units 50 installed in one support member 100. At least one of the head unit 50) serves to move in the X-axis direction. The second driving unit 70 may be entirely installed in the plurality of head units 50, and may be installed only in some of the plurality of head units 50.

This second driving unit 70 is controlled by a control device, and before performing the operation of applying the paste on the substrate (S), between the two or more head unit 50 installed in the support member 100 The at least one head unit 50 of the two or more head units 50 is moved in the X-axis direction so that the interval is adjusted. Of course, in the process of applying the paste on the substrate S, the second driving unit 70 is operated together with the first driving unit 60 so that the head unit 50 moves by the movement of the support member 100. And with respect to the support member 100 can be controlled to move itself.

The second driving unit 70 is to adjust the distance between the plurality of head units 50 installed in the support member 100, the driving force of the second driving unit 70 is the first driving unit 60 It is small compared to the driving force of. In addition, the second driving unit 70 may move the head unit 50 so that the distance between the plurality of head units 50 can be adjusted before performing the operation of applying the paste on the substrate S. FIG. Since only a minimum driving force is necessary, the size of the second driving unit 70 can be minimized. Accordingly, the width of the head unit in the X axis direction of the movable portion 71 of the second driving unit 70 can be minimized. The width Wh in the X-axis direction of (50) can be made to be equal to or less. Therefore, when the plurality of head units 50 are adjacent to each other on the support member 100 in order to minimize the distance Wn between the nozzles 53 of the plurality of head units 50, The width of the movable portion 71 in the X axis direction is not limited.

Therefore, as shown in FIG. 9, the distance Wn between the nozzles 53 of the plurality of head units 50 may be minimized without being affected by the width of the movable portion 71 for moving the head unit 50. As a result, the gap Wn between the nozzles 53 can be reduced as compared with the conventional one, and therefore, a paste pattern having a narrow gap DPN that cannot be formed at the same time in the conventional paste dispenser can be simultaneously formed. .

As described above, the paste dispenser according to the present invention can minimize the spacing between the nozzles of the plurality of head units, and thus has the effect of forming a paste pattern having a narrower spacing than in the prior art.

The technical ideas described in the embodiments of the present invention can be implemented independently, or in combination with each other.

In addition, the embodiment of the present invention as described above has been described by taking a paste dispenser as an example, the technical concept of the present invention can be applied only to the paste dispenser, supplying a liquid such as adhesive or liquid crystal in the liquid crystal panel or semiconductor manufacturing process It can be applied to the device.

1 is a perspective view showing a head unit of a paste dispenser according to the prior art.

2 is a front view of FIG. 1.

3 is a front view illustrating a case where the head units are adjacent to each other in the paste dispenser of FIG. 1.

4 is a perspective view showing a paste dispenser according to the present invention.

5 is an exploded perspective view of the paste dispenser of FIG. 4.

6 is an exploded perspective view illustrating another example of the paste dispenser of FIG. 4.

FIG. 7 is a front view illustrating the head unit of the paste dispenser of FIG. 4.

8 and 9 are operational state diagrams of the paste dispenser according to the present invention.

*** Explanation of symbols for main parts of drawing ***

40: head support 50: head unit

53: nozzle 60: first drive unit

70: second drive unit 100: support member

Claims (5)

A support member installed on the head support; A first driving unit installed between the head support and the support member to move the support member in the longitudinal direction of the head support; A head unit having a nozzle through which paste is discharged and installed in at least two support members; And A second driving unit installed between the support member and the head unit to move the head unit in the longitudinal direction of the head support; The second driving unit includes a movable part to which at least one head unit of the plurality of head units are coupled, and a fixing part disposed on the support member and connected to the movable part, And the width of the movable portion in the longitudinal direction of the head support is less than or equal to the width of the head unit in the longitudinal direction of the head support. The method of claim 1, And a driving force of the second driving unit is smaller than that of the first driving unit. delete The method according to claim 1 or 2, And a control device for controlling an operation of the second driving unit to move at least one head unit of the two or more head units to adjust a gap between the two or more head units installed in the support member. Paste dispenser. A support member installed on the head support, a first drive unit installed between the head support and the support member to move the support member in the longitudinal direction of the head support, and a nozzle for discharging paste; And a second driving unit installed between two or more support members on the support member, the second driving unit installed between the support member and the head unit to move the head unit in the longitudinal direction of the head support. Is a movable part to which at least one head unit of the plurality of head units are coupled, and a fixed part disposed on the support member and connected to the movable part, wherein the width of the movable part in the longitudinal direction of the head support is In the control method of the paste dispenser which is equal to or less than the width of the head unit in the longitudinal direction of the head support, (a) operating the second driving unit to move at least one head unit of the two or more head units such that an interval between the two or more head units installed in the support member is adjusted; And (b) operating the first driving unit to move the support member provided with the two or more head units in the longitudinal direction of the head support to discharge paste from the nozzle to form a paste pattern on the substrate; Control method of the paste dispenser containing.

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