KR101265086B1 - Liquid crystal dispense device having liquid crystal dispenser - Google Patents

Abstract

The present invention relates to a liquid crystal dropping device having a plurality of liquid crystal dropping devices, comprising: a stage on which a mother substrate on which a plurality of liquid crystal panels are formed is fixedly arranged; A liquid crystal filled container, a discharge pump for sucking and discharging the liquid crystal filled in the container, and a nozzle for dropping the liquid crystal discharged from the discharge pump onto the mother substrate, the liquid crystal of the mother substrate being installed above the stage. The first liquid dropping and the first liquid dropping to drop the liquid crystal on the panel is configured in the same way, but instead of the liquid crystal is filled with pure water, the state provided on the opposite side of the first liquid dropping A second liquid crystal dropping unit configured to drop pure water into a liquid crystal panel having a poor state when a liquid crystal panel having a low level is found; And a plurality of liquid crystal droppers, wherein the liquid crystal dropping unit is configured to include at least a plurality of guide bars. There is an effect that can prevent the loss of the liquid crystal doped in the partition.

Liquid crystal dropper, discharge pump, guide bar

Description

Liquid crystal dropping device provided with a plurality of liquid crystal droppings {LIQUID CRYSTAL DISPENSE DEVICE HAVING LIQUID CRYSTAL DISPENSER}

1 is a view showing a liquid crystal display device manufactured by a liquid crystal dropping method;

2 is a flowchart illustrating a method of manufacturing a liquid crystal display device by the liquid crystal dropping method;

3 is a view showing a basic concept of the liquid crystal dropping method;

4 is a perspective view showing the structure of a liquid crystal dropping device having a plurality of liquid crystal droppings according to an embodiment of the present invention;

5 is an exploded perspective view showing an exploded structure of the liquid crystal dropping apparatus of FIG. 4;

Figure 6 is a perspective view showing a state in which the liquid crystal discharge pump is fixed to the fixed portion,

7 (a) to 7 (d) are cross-sectional views showing the operation of the liquid crystal discharge pump;

8 is a perspective view illustrating a structure of a liquid crystal discharge pump having an increased fixed angle.

The present invention relates to a liquid crystal dropping device having a plurality of liquid crystal droppings, and more particularly, to the loss of liquid crystal doped into a partition of a panel in a bad state by using a plurality of liquid crystal dropping liquids selectively operating upon liquid crystal dropping. The present invention relates to a liquid crystal dropping device having a plurality of liquid crystal dropping devices which can prevent the liquid crystals.

2. Description of the Related Art Recently, various portable electronic devices such as a mobile phone, a PDA, and a notebook computer have been developed. Accordingly, there is a growing need for a flat panel display device for a light and small size. Such flat panel displays are being actively researched, such as LCD (Liquid Crystal Display), PDP (Plasma Display Panel), FED (Field Emission Display), VFD (Vacuum Fluorescent Display), but mass production technology, ease of driving means, Liquid crystal display devices (LCDs) are in the spotlight for reasons of implementation.

There are various methods for forming such a liquid crystal display device (LCD), but recently, a liquid crystal layer forming method using a liquid crystal dropping method is widely used. The liquid crystal dropping method does not inject the liquid crystal by the pressure difference between the inside and the outside of the panel, but directly drops and dispenses the liquid crystal onto the substrate, and uniformly spreads the liquid crystal dropped by the bonding pressure of the panel. The liquid crystal layer is formed by distribution. Since the liquid crystal dropping method directly drops the liquid crystal onto the substrate for a short time, the liquid crystal layer formation of the large area liquid crystal display device can be performed very quickly, and only the required amount of liquid crystal is directly dropped onto the substrate. Since it is possible to minimize the consumption of the liquid crystal display device has the advantage that can significantly reduce the manufacturing cost.

1 is a view showing a basic concept of the liquid crystal dropping method. As shown in the figure, in the liquid crystal dropping method, before the lower substrate 105 and the upper substrate 103 on which the driving element and the color filter are formed, respectively, the liquid crystal 107 is droplet-shaped on the lower substrate 105. Dropping The liquid crystal 107 may be dropped on the substrate 103 on which the color filter is formed. In other words, the substrate to be the liquid crystal dropping method in the liquid crystal dropping method may be either a TFT substrate or a CF substrate. However, when the substrates are bonded, the substrate on which the liquid crystal is dropped must be placed at the bottom.

In this case, a sealing material 109 is applied to the outer region of the upper substrate 103 to apply pressure to the upper substrate 103 and the lower substrate 105 so that the upper substrate 103 and the lower substrate 105 are bonded together. At the same time, droplets of the liquid crystal 107 are spread out by the pressure to form a liquid crystal layer having a uniform thickness between the upper substrate 103 and the lower substrate 105. In other words, the biggest feature of the liquid crystal dropping method is that the liquid crystal 107 is previously dropped on the lower substrate before the panel 101 is bonded, and then the panel is bonded by the sealing material 109.

The liquid crystal display device manufacturing method to which the above liquid crystal dropping method is applied is shown in FIG. 5. As shown in the figure, TFT and color filter layers, which are driving elements, are formed on the lower substrate 150 and the upper substrate 103 through the TFT array process and the color filter process (S201 and S202). The TFT array process and the color filter process are the same as those of the conventional manufacturing method shown in FIG. In particular, since the liquid crystal dropping method is applied in the manufacturing method, it can be usefully used in a larger glass substrate, for example, a large area glass substrate having an area of 1000 × 1200 mm ² or more compared with the conventional manufacturing method.

Subsequently, after the alignment film is applied to the lower substrate 105 on which the TFT is formed and the upper substrate 103 on which the color filter layer is formed, rubbing is performed (S202 and S205), the liquid crystal panel region of the lower substrate 105 is formed. 107 is dropped and a sealing material 109 is applied to the liquid crystal panel outer region of the upper substrate (S203, S206).

Thereafter, pressure is applied while the upper substrate 103 and the lower substrate 105 are aligned, and the upper substrate 105 and the lower substrate 103 are bonded together by a sealing material 109 and at the same time the application of pressure is applied. The liquid crystal 107 dropped by this is spread evenly over the whole panel (S207). Through this process, a plurality of liquid crystal panels having a liquid crystal layer are formed on glass substrates (lower substrates and upper substrates) having a large area. The glass substrates are processed and cut and separated into a plurality of liquid crystal panels. By inspecting, a liquid crystal display device is produced (S208, S209).

In the method for manufacturing a liquid crystal display device by the liquid crystal dropping method as described above, it is important to precisely control the dropping position of the liquid crystal and the dropping amount of the liquid crystal to accurately form the liquid crystal layer to a desired thickness. In particular, since the thickness of the liquid crystal layer has a close relationship with the cell gap of the liquid crystal panel, the accurate dropping position and the dropping amount of the liquid crystal are very important factors for preventing defects of the liquid crystal panel. Therefore, an apparatus for dropping the correct amount of liquid crystal at the correct position is required.

3 is a view showing a basic concept of dropping the liquid crystal 107 on a substrate (large area glass substrate) 105 using liquid crystal dropping. As shown in the figure, the liquid crystal droplets 120 are provided on the substrate 105. Although not shown in the figure, the liquid crystal is filled in the liquid crystal dropper 120 to fill a predetermined amount on the substrate.

Typically, the liquid crystal is dropped onto the substrate in the form of droplets. Since the substrate 105 moves at a set speed in the x and y directions, and liquid crystals discharge liquid crystals at set time intervals, the liquid crystals 107 dropped on the substrate 105 are spaced at regular intervals in the x and y directions. Is placed. Of course, the liquid crystal dropping substrate 105 may be fixed and the liquid crystal dropping 120 may move in the x and y directions to drop the liquid crystal at a predetermined interval. However, in this case, since the droplet-shaped liquid crystals are shaken by the movement of the liquid crystal dropping 120, an error may occur in the dropping position and the dropping amount of the liquid crystal. Therefore, the liquid crystal dropping 120 is fixed and the substrate 105 is moved. It is desirable to.

However, the conventional liquid crystal dropper 120 is provided with a single nozzle and is disposed on the upper side of the panel to be the liquid crystal drop, so that the liquid crystal is applied to the upper side of the panel. Even if the state of the partition is poor, the liquid crystal is applied to the partition of the panel that is not usable because the state is poor in order to fit the cell gap, and as a result, expensive liquid crystal is wasted.

Accordingly, an object of the present invention is to provide a liquid crystal drop having a plurality of liquid crystal drop which can prevent the loss of the liquid crystal doped into the partition of the panel which is in a bad state by using a plurality of liquid crystal drop which selectively operates upon liquid crystal dropping. It is to provide a device.

According to the present invention, there is provided a stage in which a mother substrate on which a plurality of liquid crystal panels are formed is fixedly disposed; A liquid crystal filled container, a discharge pump for sucking and discharging the liquid crystal filled in the container, and a nozzle for dropping the liquid crystal discharged from the discharge pump onto the mother substrate, the liquid crystal of the mother substrate being installed above the stage. The first liquid dropping and the first liquid dropping to drop the liquid crystal on the panel is configured in the same way, but instead of the liquid crystal is filled with pure water, the state provided on the opposite side of the first liquid dropping A second liquid crystal dropping unit configured to drop pure water into a liquid crystal panel having a poor state when a liquid crystal panel having a low level is found; And a plurality of guide bars on which the liquid crystal dropping unit is mounted, the liquid crystal dropping device having a plurality of liquid crystal dropping units.

Here, it is preferable that the liquid crystals filled in the first liquid crystal and the second liquid crystal are different materials from each other.

This is to drop liquid crystals of different materials depending on the characteristics of the liquid crystal panel desired by the user when the liquid crystal dropping device is used for MMG (Multi-Model Glass) which manufactures liquid crystal panels having various sizes and states on one mother substrate. .

In addition, a predetermined liquid crystal may be filled in the first liquid crystal, and pure water may be filled in the second liquid crystal.

This is because in the case of a liquid crystal panel having a poor state, pure water filled in the second liquid drop is dropped so that expensive liquid crystal filled in the first liquid drop is not wasted.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

4 is a perspective view showing the structure of the liquid crystal drop according to the present invention and Figure 5 is a perspective exploded view of the liquid crystal drop. As shown in FIGS. 4 and 5, in the first liquid dropper 120, a cylindrical liquid crystal container 122 is accommodated in the case 123. The liquid crystal container 122 is made of polyethylene, and the liquid crystal 107 is filled therein, and the case 123 is made of stainless steel so that the liquid crystal container 122 is formed therein. It is stored. In general, polyethylene is mainly used as the liquid crystal container 122 because it is easy to form a container having a desired shape because of its excellent moldability and does not react with the liquid crystal when the liquid crystal 107 is filled. However, since the polyethylene is weak in strength, the polyethylene is easily deformed by a weak external shock. In particular, when polyethylene is used as the liquid crystal container 122, the container 122 may be deformed to drop the liquid crystal 107 in the correct position. Since it is not present, it is stored in a case 123 made of stainless steel with high strength, and used.

On the other hand, although not shown in the figure, a gas supply pipe is connected to the upper portion of the liquid crystal container 122 is supplied with a gas such as nitrogen from the outside. This gas supply prevents the pressure drop in the region where the liquid crystal is not filled in the liquid crystal container 122 when the liquid crystal is dropped, thereby preventing the liquid crystal dropping.

The liquid crystal container 122 may be formed of a metal such as stainless steel. In this case, since the liquid crystal container 122 is not deformed by an external impact, the outer case 123 is not necessary. Therefore, the manufacturing cost of the first liquid trap 120 can be reduced. As such, when the liquid crystal container 122 is formed of a metal, it is preferable to apply a fluorine resin film therein to prevent the filled liquid crystal 107 from causing a chemical reaction with the metal.

The liquid crystal discharge pump 140 is disposed below the liquid crystal container 122. The liquid crystal discharge pump 140 discharges a predetermined amount of liquid crystal of the liquid crystal container 122 and drops the liquid on the substrate. The liquid crystal is discharged as the liquid crystal discharge pump 140 is connected to the liquid crystal container 122. The liquid crystal suction opening 147 and the liquid crystal suction opening 147 are formed opposite to each other, and the liquid crystal discharge pump 140 operates to discharge the liquid crystal.

As shown in FIG. 5, the first connection pipe 126 is coupled to the liquid crystal suction opening 147. Although the liquid crystal suction opening 147 is inserted and coupled to the first connection pipe 126 in the drawing, the liquid crystal suction opening 147 and the first connection pipe 126 may be coupled by a coupling means such as a screw. One side of the first connection tube 126 is formed with a pin 128 through which the inside is perforated, such as a needle, and the lower portion of the liquid crystal container 122 that outflows the liquid crystal into the first connection tube 126. And pads (not shown) made of a material having strong shrinkage and sealing properties such as butyl rubber series. The pin 128 is inserted into the liquid crystal container 122 through a pad and flows the liquid crystal 107 of the liquid crystal container 122 into the liquid crystal suction opening 147. Since the pad is strongly contracted into the pin 128 when the pin 128 is inserted, the liquid crystal 107 may be prevented from leaking into the insertion region of the pin 128. As such, since the liquid crystal suction opening 147 and the liquid crystal container 122 are fastened by the pins and the pads, the fastening structure is simplified, and as a result, the fastening and detaching can be easily performed.

The liquid crystal suction opening 147 and the first connection pipe 126 may be integrally formed. In this case, the pin 128 is formed in the liquid crystal suction opening 147 and inserted directly into the liquid crystal container 122 through a pad to leak the liquid crystal of the liquid crystal container 122, thereby simplifying the structure.

The nozzle 150 is installed below the liquid crystal discharge pump 140. The nozzle 150 is connected to the liquid crystal discharge port 148 of the liquid crystal discharge pump 140 through the second connection pipe 160 to drop the liquid crystal 107 discharged from the liquid crystal discharge pump 150 on a substrate. .

The second connection pipe 160 may be formed of an opaque material, but may be formed of a transparent material. As described above, the reason for forming the second connection tube 160 made of a transparent material is as follows.

Generally, bubbles are contained in the liquid crystal 107 when the liquid crystal is dropped, and the drop amount of the liquid crystal 107 dropped on the substrate cannot be accurately controlled. Therefore, bubbles must be removed when the liquid crystal 107 is dropped. Meanwhile, bubbles are already included in the liquid crystal 107 filled in the liquid crystal container 122. Although bubbles in the liquid crystal 107 can be removed by the bubble removing device, it is virtually impossible to remove all bubbles even in this case. In addition, bubbles may occur when the liquid crystal 107 is introduced into the liquid crystal discharge pump 140 from the liquid crystal container 122. As a result, it is almost impossible to completely remove bubbles from the dropped liquid crystal 107. Therefore, when bubbles are generated, removing bubbles by discontinuing the operation of the liquid crystal droplets may be the best way to prevent defects.

The second connecting tube 160 is formed of a transparent material to easily detect bubbles included in the liquid crystal container 122 or bubbles generated in the liquid crystal container 122 to prevent defects. At this time, the discovery of the bubble may be made by the operator's naked eye, but the first sensor 162 such as a photo coupler on both sides of the second connecting tube 160 to automatically detect the bubble. It will more reliably prevent failure.

On both sides of the nozzle 150 into which the liquid crystal discharged through the second connecting pipe 160 flows, protection parts 152 are installed to prevent the nozzle 150 from being damaged from an external force. The protection part 152 of the lower part of the 150 is provided with a second sensor 154 for detecting whether the liquid crystal dropped from the nozzle 150 contains bubbles or agglomerates of liquid crystal on the surface of the nozzle 150. .

The phenomenon that the liquid crystal agglomerates on the surface of the nozzle 150 prevents the accurate dropping of the liquid crystal 107. When the liquid crystal is dropped through the nozzle 150, even if a predetermined amount of liquid crystal is discharged from the liquid crystal discharge pump 140, some of the liquid crystal is spread onto the surface of the nozzle 150, so that less liquid crystal is dropped on the substrate. In addition, when the liquid crystals agglomerated on the surface of the nozzle 150 are dropped onto the substrate, it may cause a fatal defect of the liquid crystal display device. As such, in order to prevent the liquid crystals from agglomerating on the surface of the nozzle 150, a material (ie, a hydrophobic material) having a high contact angle with respect to the liquid crystal, such as a fluorine resin, is dipping on the surface of the nozzle 150. Or by a spray method. The liquid crystal dropped by the application of the fluorine resin is dropped onto the substrate through the nozzle 150 in the form of a perfect drop without spreading to the surface of the nozzle 150.

On the other hand, the liquid crystal discharge pump 140 is inserted into the rotating member 157, the rotating member 157 is fixed to the fixing portion 155. The rotating member 157 is connected to the first motor 131. As the first motor 131 operates, the rotating member 157 rotates, and the liquid crystal discharge pump 140 fixed to the rotating member 157 operates.

The liquid crystal discharge pump 140 is in contact with one side of the liquid crystal volume adjusting member 134 having a shape such as a bar. The other side of the liquid crystal volume adjustment member 134 is formed with a hole, the rotating shaft 136 is inserted into the hole. A screw is formed around the hole of the liquid crystal volume adjusting member 134 and the rotating shaft 136, and is screwed together. In addition, one end of the rotating shaft 136 is connected to the second motor 133, the other end is connected to the control lever 137.

The amount of liquid crystal discharged from the liquid crystal container 122 through the liquid crystal discharge pump 140 depends on the angle fixed to the rotating member 157. That is, the liquid crystal volume of the liquid crystal discharge pump 140 varies according to the fixed angle fixed to the rotating member 157. When the second motor 133 connected to the rotary shaft 136 is driven (automatically adjusted) or the control lever 137 is operated (manually adjusted), the rotary shaft 136 is rotated, thus rotating screw 136 and the screw One end of the combined liquid crystal volume adjustment member 134 is moved back and forth (straight line) along the rotation axis 136. As such, the force applied to the liquid crystal discharge pump 140 is changed as one end of the liquid crystal volume adjusting member 134 moves, and as a result, the fixed angle of the liquid crystal discharge pump 140 is changed.

As described above, the first motor 131 operates the liquid crystal discharge pump 140 to discharge the liquid crystal of the liquid crystal container 122 and drop the liquid onto the substrate, and the second motor 133 is connected to the rotating member 157. The amount of liquid crystal discharged from the liquid crystal discharge pump 140 is controlled by adjusting the fixed angle of the fixed liquid crystal discharge pump 140.

The amount of one-time dropping of the liquid crystal dropped onto the substrate through the liquid crystal discharge pump 140 is a very small amount, and thus the amount of change of the liquid crystal discharge pump 140 controlled by the second motor 133 is also a small amount. This means that the inclination angle of the liquid crystal discharge pump 140 must be adjusted very finely in order to control the discharge amount of the liquid crystal discharge pump 140. For such fine adjustment, the second motor 133 uses a step motor operated by a pulse input value.

Meanwhile, since the structure of the second liquid drop 170 provided on the opposite side of the first liquid drop 120 is the same as that of the first liquid drop 120, a detailed description thereof will be omitted.

With this configuration, the liquid crystal dropping device having a plurality of liquid crystal dropping apparatuses according to an embodiment of the present invention operates as follows.

6 is a view showing a state in which the liquid crystal discharge pump 140 is fixed to the rotating member 157. As shown in the figure, the piston 145 is fixed to the rotating member 157 at an angle α, and 146b is inserted into the hole 159 formed in the inner surface of the rotating member 157 to form a piston ( 145 and the rotating member 157 is coupled. Although not shown in the drawing, since the bearing is provided inside the hole 159, the bar 146b of the piston 145 inserted into the hole 159 can move back, forth, left, and right. When the first pump 131 operates, the rotating member 157 rotates, and as a result, the piston 145 coupled to the rotating member 157 (that is, fixed) rotates.

At this time, assuming that the fixed angle α of the liquid crystal discharge pump with respect to the rotating member 157, that is, the fixed angle α of the piston 145 with respect to the rotating member 157 is 0, the piston 145 rotates only. Only rotational movement is performed along the member 157. However, since the fixed angle α is not substantially zero (that is, fixed at a constant angle), the piston 145 rotates along the rotational movement of the rotating member 157 and simultaneously moves up and down. Will be.

During the movement of the piston 145, when the piston 145 is rotated by a predetermined angle to move upwards, an empty space is created inside the cylinder 142, and the liquid crystal is sucked into the space through the liquid crystal suction opening 147. As the piston 145 further rotates, the piston 145 moves downward, and the liquid crystal sucked in the cylinder 142 is discharged through the liquid crystal discharge port 148. At this time, the groove 145a formed in the piston 145 serves to open and close the liquid crystal suction opening 147 and the liquid crystal discharge opening 148 during the suction and discharge of the liquid crystal by the rotation of the piston 145.

Hereinafter, the operation of the liquid crystal discharge pump 140 as described above will be described in more detail with reference to FIGS. 7A to 7D.

As shown in FIGS. 7A to 7D, the liquid crystal discharge pump 140 discharges the liquid crystal 107 of the liquid crystal container 122 to the nozzle 150 through four strokes. 7 (a) and 7 (c) are cross strokes. 7 (b) shows the suction stroke through the liquid crystal suction port 147 and FIG. 7 (d) shows the liquid crystal discharge stroke through the liquid crystal discharge port 148.

As shown in FIG. 7A, the piston 145 fixed to the rotating member 157 at an angle α rotates as the rotating member 157 rotates. At this time, the liquid crystal suction opening 147 and the liquid crystal discharge opening 148 are closed by the piston 145.

As the rotary member 157 rotates about 45 °, the piston 145 also rotates, so that the liquid crystal suction opening 147 is opened by the groove 145a of the piston 145 as shown in FIG. . Meanwhile, the bar 146b of the piston 145 is inserted into the hole 159 of the rotating member 157 to couple the rotating member 157 and the piston 145. Accordingly, the piston 145 rotates as the rotating member 157 rotates, and the bar 146b rotates along the rotational surface.

Since the piston 145 is fixed to the rotating member 157 at an angle and the bar 146b rotates along the rotating surface, the piston 145 is raised as the rotating member 145 rotates. In addition, since the cylinder 141 is fixed, a space is created in the cylinder 141 under the piston 145 as the rotating member 145 rotates. Therefore, the liquid crystal is sucked into the space through the liquid crystal suction opening 147 opened by the groove 145a.

The suction of the liquid crystal is carried out after the suction stroke starts (that is, after the liquid crystal suction opening 147 is opened), until the rotation member 157 rotates about 45 ° to start the suction stroke as shown in FIG. 7 (c). It continues (until the liquid crystal suction opening 147 is closed).

Subsequently, as shown in FIG. 7 (d), as the rotary member 157 is further rotated, the liquid crystal discharge port 148 is opened, and the piston 145 starts to descend, and the space in the cylinder 141 is opened. The liquid crystal sucked in is discharged through the liquid crystal discharge port 148 (discharge stroke).

As described above, the liquid crystal discharge pump 140 repeats four strokes consisting of a first cross stroke, a suction stroke, a second cross stroke, and a discharge stroke, thereby discharging the liquid crystal 107 filled in the liquid crystal container 122 through the nozzle 150. To be discharged.

At this time, the discharge amount of the liquid crystal depends on the vertical movement range of the piston 145. However, the vertical movement range of the piston 145 varies depending on the angle of the liquid crystal discharge pump 140 fixed to the rotating member 157.

8 is a view showing that the liquid crystal discharge pump 140 is fixed to the rotating member 157 at an angle β. Compared to FIG. 6 in which the liquid crystal discharge pump 140 is fixed to the rotating member 157 at an angle of α (<β), the liquid crystal discharge pump 140 of FIG. 8 allows the piston 145 to move higher in the upward direction. do. This means that as the angle fixed to the rotating member 157 increases, the amount of the liquid crystal 107 sucked into the cylinder 142 during the movement of the piston 145 increases, which is fixed to the rotating member 157. It means that the discharge amount of the liquid crystal can be controlled by adjusting the angle.

On the other hand, the angle of the liquid crystal discharge pump 140 is fixed to the rotating member 157 is controlled by the liquid crystal volume adjustment member 134, as shown in Figure 4, the liquid crystal volume adjustment member 134 is a second As the pump 133 is driven, it moves. In other words, the angle of the liquid crystal discharge pump 140 can be adjusted by controlling the second pump 133.

Of course, the operator can manually set the fixed angle of the liquid crystal discharge pump 140 by the angle adjusting lever 137, but in this case, accurate adjustment is not possible and consumes a lot of time, and must stop the liquid crystal discharge pump during operation. There is also a disadvantage. Therefore, it is preferable that the fixed angle of the liquid crystal discharge pump 140 is adjusted by the second pump 133.

In this case, the fixed angle of the liquid crystal discharge pump 140 is measured by a sensor 139 such as a linear variable differential transformer, and when the fixed angle exceeds the set angle, an alarm is issued to the liquid crystal discharge pump 140. ) To prevent damage.

As described above, the first and second liquid droplets 120 and 170 drop the liquid crystal onto the liquid crystal panel formed on the substrate as the liquid crystal discharge pump operates. Generally, a plurality of liquid crystal panels are formed on the mother substrate. Therefore, when the type of liquid crystal panel desired by the user is different on one mother substrate, the liquid crystal having different properties is filled and selectively used in the first liquid crystals 120 and the second liquid crystals 170, respectively. Various types of liquid crystal panels may be manufactured in a short time, and when a plurality of identical liquid crystal panels are manufactured on a mother substrate, the second liquid crystal filling unit 170 may be filled with pure water to find a poor liquid crystal panel. In this case, since the pure liquid filled in the second liquid dropping 170 is dripped to keep the cell gap constant, expensive liquid crystals do not need to be dropped in the poor liquid crystal panel, thereby preventing the loss of the liquid crystal.

As described above, according to the present invention, it is possible to prevent the loss of the liquid crystal doped in the partition of the panel in a bad state by using a plurality of liquid crystal droplets that selectively operate when the liquid crystal is dropped.

Claims (3)

A stage in which a mother substrate on which a plurality of liquid crystal panels are formed is fixedly disposed; A liquid crystal filled container, a discharge pump for sucking and discharging the liquid crystal filled in the container, and a nozzle for dropping the liquid crystal discharged from the discharge pump onto the mother substrate, the liquid crystal of the mother substrate being installed above the stage. The first liquid dropping and the first liquid dropping to drop the liquid crystal on the panel is configured in the same way, but instead of the liquid crystal is filled with pure water, the state provided on the opposite side of the first liquid dropping A second liquid crystal dropping unit configured to drop pure water into a liquid crystal panel having a poor state when a liquid crystal panel having a low level is found; And And a plurality of liquid crystal dropping devices including a guide bar on which the liquid crystal dropping unit is mounted. delete delete

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