KR20160025692A - Unit of measuring quantity of liquid crystal and apparatus of dispensing liquid crystal with the same - Google Patents

Abstract

The present invention relates to a liquid crystal injecting apparatus in order to effectively measure an injection quantity of a liquid crystal. According to an embodiment of the present invention, the liquid crystal injecting apparatus includes a base; a head which is provided in the upper part of the base, and injects a liquid crystal to a substrate; and a liquid crystal measuring unit which is located on the base, and measures the weight of the liquid crystal injected from the head. The liquid crystal measuring unit includes a measurement unit of measuring the quantity of the liquid crystal, and an ionization unit controlling an ionization concentration around the measurement unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal measuring unit and a liquid crystal discharging device including the liquid crystal measuring unit.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal discharge device, and more particularly, to a liquid crystal measurement unit for measuring a liquid crystal discharge amount and a liquid crystal discharge device including the same.

2. Description of the Related Art Recently, liquid crystal display devices have been widely used in display portions of electronic apparatuses such as mobile phones and portable computers. A liquid crystal display device includes: a color filter substrate on which a black matrix, a color filter, a common electrode, and an alignment film are formed; A liquid crystal layer is formed between a thin film transistor (TFT), a pixel electrode, and an array substrate on which an alignment film is formed, and a video effect is obtained by using a difference in refractive index of light according to anisotropy of liquid crystal.

As a method of forming the liquid crystal layer between the color filter substrate and the array substrate, there are a liquid crystal injection method or a liquid crystal dropping method. In the liquid crystal injection method, the color filter substrate and the array substrate are bonded to each other with a predetermined distance therebetween, and a liquid crystal is injected into the space between the color filter substrate and the array substrate. The liquid crystal dripping method is a method of dropping liquid crystal in a display area defined by a seal line after forming a seal line in a seal line area on a color filter substrate or an array substrate. The color filter substrate and the array substrate on which the liquid crystal is dropped are pressed so that the liquid crystal dropped after the alignment is uniformly spread over the color filter substrate and the array substrate are cured by curing the seal pattern through ultraviolet (UV) and heat treatment processes .

On the other hand, in the apparatus for discharging liquid crystal, the liquid crystal in the cover of the cover is manually cleaned when cleaning the liquid crystal discharge amount measuring apparatus. However, there is a problem that a large amount of static electricity is generated at the time of cleaning, thereby lowering the measurement reliability of the electronic balance.

In addition, since a large amount of static electricity is generated after cleaning, it takes time to deionize, and the scale can not be used immediately.

An object of the present invention is to provide an apparatus for effectively measuring a discharge amount of liquid crystal discharged from a liquid crystal discharge device.

The present invention provides a liquid crystal discharge device.

According to an embodiment of the present invention, the liquid crystal discharging apparatus includes a base and a head provided on the base, for discharging the liquid crystal to the substrate, and a head positioned at the base and measuring the weight of the liquid crystal discharged from the head The liquid crystal measurement unit may include a measurement unit for measuring the amount of liquid crystal discharge and an ionization unit for adjusting the ionization concentration around the measurement unit.

According to one embodiment, the metrology unit may include a container having a space for receiving liquid crystal and a balance body for weighing the liquid crystal in the container.

According to one embodiment, the liquid crystal measurement unit may further include a cover unit, and the cover unit may include a frame for enclosing the container and a cover for opening and closing the container at an upper portion of the container.

According to one embodiment, the ionization unit may be provided on the outer surface of the frame.

According to one embodiment, the cover unit includes a first frame located at one side of the container and a second frame located at the other side of the container, and the ionization unit is provided to the first frame and the second frame, respectively .

According to one embodiment, the ionization unit provided in the first frame and the ionization unit provided in the second frame may be provided so as to face each other.

According to one embodiment, the ionization unit may include a controller for controlling the ejection of the ionizing gas at regular time intervals around the vessel.

The present invention provides a liquid crystal measuring unit.

According to an embodiment of the present invention, a measurement unit for measuring the discharge amount of the liquid crystal and an ionization unit for adjusting the ionization concentration around the measurement unit may be included.

According to one embodiment, the metrology unit may include a container having a space for receiving liquid crystal and a balance body for weighing the liquid crystal in the container.

According to one embodiment, the liquid crystal measurement unit may further include a cover unit, and the cover unit may include a frame for enclosing the container and a cover for opening and closing the container at an upper portion of the container.

According to one embodiment, the ionization unit may be provided on the outer surface of the frame.

According to one embodiment, the ionization unit may include a controller for controlling the ejection of the ionizing gas at regular time intervals around the vessel.

According to an embodiment of the present invention, an ionization unit is provided in the liquid crystal measurement unit to improve the efficiency of liquid crystal discharge amount measurement in the liquid crystal discharge device.

1 is a view showing a configuration of an inkjet type liquid crystal coating equipment.
2 is a perspective view of the liquid crystal discharge portion of FIG.
3 is a plan view of the liquid crystal discharge portion of FIG.
Fig. 4 is a view showing the nozzles of the head of Fig. 2;
5 is a side view of the head moving unit of Figs. 2 and 3. Fig.
Figure 6 is a front view of the first mobile unit of Figure 5;
Fig. 7 is a perspective view of the liquid crystal mass measuring unit of Fig. 2;
8 is a cross-sectional view of the liquid crystal measurement unit of Fig.
9 is a plan view of the liquid crystal measurement unit of Fig.
10 is a view showing the controller of the ionization unit of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. This embodiment is provided to more fully describe the present invention to those skilled in the art. Thus, the shape of the elements in the figures has been exaggerated to emphasize a clearer description.

1 is a view showing a configuration of an inkjet type liquid crystal coating equipment.

The liquid crystal coating equipment 1 shown in Fig. 1 is a facility for applying a liquid crystal to a substrate by an inkjet method for discharging liquid crystal. The substrate may be a color filter (CF) substrate or a thin film transistor (TFT) substrate of a liquid crystal display panel, and the liquid crystal may be applied to an entire surface of a color filter (CF) substrate or a thin film transistor (TFT) substrate.

1, the liquid crystal coating equipment 1 includes a liquid crystal discharge unit 10, a substrate transfer unit 20, a loading unit 30, an unloading unit 40, a liquid crystal supply unit 50, . The liquid crystal discharge portion 10 and the substrate transfer portion 20 are arranged in a line in the first direction 12.

The first direction 12 is an arrangement direction of the liquid crystal discharge portion 10 and the substrate transfer portion 20 and the second direction 14 is a direction perpendicular to the first direction 12 on the horizontal plane, Is a direction perpendicular to the first direction 12 and the second direction 14.

The liquid crystal discharge portion 10 and the substrate transfer portion 20 can be positioned adjacent to each other. A substrate transfer unit 20 is disposed on one side of the liquid crystal discharge unit 10. On the other side of the liquid crystal discharge part 10, a liquid crystal supply part 50 and a control part 90 are arranged. The liquid crystal supply part 50 and the control part 90 are disposed at positions facing the substrate transfer part 20. The liquid crystal supply part 50 and the control part 90 are arranged in the second direction 14 side by side.

The loading unit 30 and the unloading unit 40 are located at the other side of the substrate transfer unit 20. The loading unit 300 and the unloading unit 40 are provided at positions facing the liquid crystal discharge unit 10. The loading section 30 and the unloading section 40 are positioned in the second direction 14 side by side.

The substrate to which the liquid crystal is to be applied is brought into the loading section 30. The substrate transferring unit 20 transfers the substrate loaded into the loading unit 30 to the liquid crystal discharging unit 10. The liquid crystal discharging portion 10 receives the liquid crystal from the liquid crystal supplying portion 50 and discharges the liquid crystal onto the substrate by an ink jet method for discharging the liquid crystal. When the liquid crystal discharge is completed, the substrate transfer section 20 transfers the substrate from the liquid crystal discharge section 10 to the unloading section 40. The substrate coated with the liquid crystal is taken out of the unloading portion 40. The control unit 90 controls the overall operation of the liquid crystal discharge unit 10, the substrate transfer unit 20, the loading unit 30, the unloading unit 40, and the liquid crystal supply unit 50.

2 is a perspective view of the liquid crystal discharge portion of FIG. 3 is a plan view of the liquid crystal discharge portion of FIG. 2 and 3, the liquid crystal discharging portion 10 includes a base 1800, a substrate supporting unit 100, a gantry 200, a gantry moving unit 300, heads 400, a head moving unit 500, a liquid crystal supply unit 600, a liquid crystal measurement unit 800, a nozzle inspection unit 900, and a head cleaning unit 1000.

The base 1800 may be provided in a rectangular parallelepiped shape having a constant thickness. A substrate supporting unit 100 is disposed on the upper surface of the base 1800. The substrate supporting unit 100 has a supporting plate 110 on which the substrate S is placed. The support plate 110 may be a rectangular plate. The rotation driving member 120 is connected to the lower surface of the support plate 110. The rotation drive member 120 may be a rotary motor. The rotation driving member 120 rotates the support plate 110 around a rotation center axis perpendicular to the support plate 100. [

When the support plate 110 is rotated by the rotation drive member 120, the substrate S can be rotated by the rotation of the support plate 110. [ When the longitudinal direction of the cell formed on the substrate to which the liquid crystal is to be applied faces the second direction 14, the rotation driving member 120 can rotate the substrate such that the long side direction of the cell is in the first direction 12.

The support plate 110 and the rotation driving member 120 can be linearly moved in the first direction 12 by the linear driving member 130. The linear driving member 130 includes a slider 132 and a guide member 134. The rotation driving member 120 is provided on the upper surface of the slider 132. [ The guide member 134 is elongated in the first direction 12 at the center of the upper surface of the base 1800. The slider 132 may include a linear motor (not shown). The slider 132 is linearly moved in the first direction 12 along the guide member 134 by a linear motor (not shown).

The gantry 200 is provided at an upper portion of a path through which the support plate 110 is moved. The gantry can be provided in the shape of a rectangular parallelepiped. The gantry 200 is spaced upwardly from the top surface of the base 1800. The gantry 200 is disposed such that the longitudinal direction thereof is in the second direction 14.

The gantry moving unit 300 linearly moves the gantry 200 in the first direction 12. The gantry moving unit 300 includes a first moving unit 310 and a second moving unit 320. The first moving unit 310 is provided at one end of the gantry 200 and the second moving unit 320 is provided at the other end of the gantry 200. [ The first moving unit 310 slides along the guide rail 315 provided on one side of the base 1800. [ The second moving unit 320 slides along the guide rail 325 provided on the other side of the base 1800 and linearly moves the gantry 200 in the first direction 12.

The heads 400 eject droplets of the liquid crystal onto the substrate. A plurality of heads 400 may be provided. The heads 400 are coupled to the gantry 200 in a row in a second direction 14. The heads 400 are coupled to the gantry 200 by a head moving unit 500. The heads 400 are moved linearly in the longitudinal direction of the gantry 200, i.e., in the second direction 14, by the head moving unit 500. And can also be linearly moved in the third direction 16. The heads 400 may rotate about an axis parallel to the third direction 16 with respect to the head moving unit 500, respectively.

Referring to FIG. 4, a plurality of nozzles 410a and 410b are provided on the bottom surface of the heads 400 to discharge droplets of liquid crystal. As an example, the head 410 may be provided with 128 or 256 nozzles 410a and 410b. The nozzles 410a and 410b may be arranged in a line at predetermined pitch intervals. The nozzles 410a and 410b can discharge the liquid crystal in an amount of ㎍ unit.

Each of the heads 400 may be provided with a number of piezoelectric elements corresponding to the nozzles 410a and 410b. The droplet discharge amount of the nozzles 410a and 410b can be independently controlled by controlling the voltage applied to the piezoelectric elements.

The head moving unit 500 may be provided to the individual heads 400, respectively. In the case of this embodiment, since three heads 410, 420 and 430 are provided as an example, three heads may be provided so as to correspond to the number of heads 410, 420 and 430, respectively. Alternatively, one head moving unit 500 may be provided, in which case the heads 400 may be moved integrally, rather than individually. Alternatively, a plurality of head moving units 500 may be provided corresponding to the number of heads 400 provided.

Fig. 5 is a side view of the head moving unit of Figs. 2 and 3, and Fig. 6 is a front view of the first moving unit of Fig.

Referring to FIGS. 5 and 6, the head moving unit 500 includes a first moving unit 520 and a second moving unit 540. The first moving unit 520 moves the individual heads 410 in a second direction 14, which is the longitudinal direction of the gantry 200. The second moving unit 540 linearly moves the individual heads 410 in the third direction 16 or rotates about an axis parallel to the third direction 16.

The first moving unit 520 includes guide rails 522a and 522b, sliders 524a and 524b, and a moving plate 526. [ The guide rails 522a and 522b are provided extending in the second direction 14 in a long direction. The guide rails 522a and 522b may be spaced apart in the third direction 16 on the entire surface of the gantry 200. Sliders 524a and 524b are movably coupled to the guide rails 522a and 522b. The sliders 524a and 524b are provided with linear actuators. As an example, the linear actuator may be provided with a linear motor (not shown). The moving plate 526 is coupled to the sliders 524a and 524b. The upper region of the moving plate 526 is coupled to the upper slider 524a. And the lower region of the moving plate 526 is coupled to the slider 524b located at the bottom. The moving plate 526 linearly moves along the guide rails 522a and 522b in the second direction 14 by the driving force of a linear motor (not shown), as shown in Fig. As such, as the heads 410, 420, and 430 are individually moved along the second direction 14, the distance between the heads 410, 420, and 430 can be adjusted.

The second moving unit 540 includes a guide member 542, a slider 544, a detector 546 and a controller 548. [ The guide member 542 is engaged with the moving plate 526 of the first moving unit 520. The guide member 542 guides the linear movement of the slider 544 in the third direction 16.

The slider 544 is rotatably coupled to the guide member 542 about a linear movement in the third direction 16 or about an axis parallel to the third direction 16. The slider 544 may be provided with a linear actuator. For example, the linear actuator may be provided as a linear motor (not shown). Further, the slider 544 may incorporate a rotation driver. The head 410 is coupled to the slider 544 and is moved in the third direction 16 by a linear movement of the slider 544 in the third direction 16.

The detector 546 may be installed in the gantry 200. The detector 546 detects the distance between the head 410 and the substrate S. [ The detector 546 may be provided as a laser sensor.

The controller 548 generates a control signal corresponding to the detection signal of the detector 546. [ After generating the control signal, the controller 548 transmits a control signal to the linear motor built in the slider 544 to control the driving of the linear motor. The controller 548 controls the driving of the linear motor (not shown) so that the distance between the head 410 and the substrate S is greater than the predetermined reference value, ) And the substrate (S).

Referring again to FIG. 3, the liquid crystal supply unit 600 includes a liquid crystal supply module 620 and a pressure regulation module 640. The liquid crystal supply module 620 and the pressure regulation module 640 may be coupled to the gantry 200. The liquid crystal supply module 620 receives the liquid crystal from the liquid crystal supply part 50, and supplies the liquid crystal to the individual heads 410, 420, and 430. The pressure regulating module 640 regulates the pressure of the liquid crystal supply module 620 by providing a positive pressure or a negative pressure to the liquid crystal supply module 620.

The liquid crystal measuring unit 800 measures the liquid crystal discharge amount of the individual heads 410, 420 and 430. The liquid crystal measurement unit 800 may be disposed on one side of the substrate supporting unit 100 on the base 1800. [ The liquid crystal measuring unit 800 measures the amount of liquid crystal discharged from all of the nozzles 410a and 410b for each of the individual heads 410, 420 and 430. The presence or absence of abnormality of the nozzles 410a and 410b of the individual heads 410, 420 and 430 can be confirmed macroscopically by measuring the liquid discharge amount of the individual heads 410, That is, when the liquid crystal discharge amount of the individual heads 410, 420 and 430 is out of the reference value, it is found that at least one of the nozzles 410a and 410b is abnormal.

 FIG. 7 is a perspective view of the liquid crystal measurement unit of FIG. 2. FIG. 8 is a cross-sectional view of the liquid crystal measurement unit of Fig. 9 is a plan view of the liquid crystal measurement unit of Fig. 10 is a view showing the controller of the ionization unit of Fig.

7 to 10, the liquid crystal measurement unit 800 includes a measurement unit 1100, a cover unit 1300, a sealing unit 1500, an ionization unit 1600, and a vibration prevention unit 1700. [ The measurement unit 1100 is located on the base 1800. The measurement unit 1100 measures the weight of the liquid crystal accommodated in the container 1111 to be described later. The cover unit 1300 opens and closes the measurement unit 1100 on the upper side of the measurement unit 1100. The sealing unit 1500 is provided between the measuring unit 1100 and the cover unit 1300. [ The dustproof unit 1700 is provided between the base 1800 and the measurement unit 1100.

The measuring unit 1100 has a container 1111, a shelf 1113, and a balance body 1115. The container 1111 is provided in a cylindrical shape with its top opened. In one example, the container may be provided in a cylindrical shape. Alternatively, the container may be provided in the form of a rectangular parallelepiped. An accommodating space AS is provided inside the container 1111. In the accommodation space AS, liquid crystal discharged from the head 410 is accommodated. The shelf 1113 supports the lower portion of the container 1111. The shelf 1113 can be integrally coupled to the container 1111. The scale body 1115 is provided on the lower side of the shelf 1113. The balance body 1115 measures the weight of the liquid crystal accommodated in the container 1111 in cooperation with the shelf 1113. The scale body 1115 can be provided as an electronic scale capable of measuring the weight of the liquid crystal up to a scale in the unit of g.

The cover unit 1300 includes a frame 1310, a cover 1321, and a driver 1331.

The frame 1310 includes a first frame 1311, a second frame 1313, a third frame 1315, and a fourth frame 1317.

The first frame 1311, the second frame 1313, the third frame 1315, and the fourth frame 1317 are provided in plate form. The first frame 1311 and the second frame 1313 are provided at a predetermined distance from the upper side of the measurement unit 1100 in the first direction 12. The third frame 1315 and the fourth frame 1317 are provided at a predetermined distance from the upper side of the measurement unit 1100 in the second direction 14. The fourth frame 1317 lies side by side in the first direction 12 from one side between the first frame 1311 and the second frame 1313. The third frame 1315 lies side by side with the fourth frame 1317 at the interruption of the first frame 1311 and the second frame 1313. The third frame 1315 divides the first frame 1311 and the second frame 1313 into a first space S1 and a second space S2. The container 1111 and the shelf 1113 are placed in the first space S1. A driver 1331 to be described later is disposed in the second space S2. On the side surface of the third frame 1315, a support bracket 1316 protruding in the direction of the second space S2 is provided. A driver 1331 to be described later is placed on the support bracket 1316.

The cover 1321 is provided in a plate shape. One end of the cover 1321 is provided with a first rail member 1323. The first rail member 1323 includes a first side plate 1323a, a second side plate 1323b, and a connecting member 1323c. The first side plate 1323a extends downward from the one end of the cover 1321 in parallel with the third direction 16. The width of the first side plate 1323a in the first direction 12 is the same as the width of the cover 1321 in the first direction 12. The second side plate 1323b is parallel to the first side plate 1323a, but is spaced apart from the third side plate 1315 by a predetermined distance. The connecting member 1323c connects the first side plate 1323a and the second side plate 1323b. The connecting member 1323c may be provided in the form of a plate parallel to the cover 1321. [

The second rail member 1318 is provided at the upper end of one side of the fourth frame 1317. The second rail member 1318 provides a space through which the connecting member 1323c and the second side plate 1323b of the first rail member 1323 are fitted and slidingly moved.

The driver 1331 is placed on the support bracket 1316. Alternatively, the driver 1331 may be directly coupled to the third frame 1315. [ The driver 1331 moves the cover 1321 in the first direction 12. The cover 1321 and the driver 1331 are connected to the brackets 1333 and 1335. The first bracket 1333 extends downward from the other end of the cover 1321 in parallel with the third direction 16. The second bracket 1335 extends from the lower end of the first bracket 1333 in the second space S2 so as to be parallel to the second direction 14 and away from the frame 1315. [ The second bracket 1335 can be directly connected to the driver 1331. The driver 1331 may be provided as a cylinder. Alternatively, the driver 1331 may be provided as a linear motor.

The sealing unit 1500 includes a plate 1510 and a sealing member 1530. A plate 1510 is provided between the measurement unit 1100 and the cover unit 1300. The plate 1510 is formed with a hole through which the shelf 1113 of the measurement unit 1100 passes. The shelf 1113 is partially exposed in the upward direction of the plate 1510 through the holes.

 A sealing member 1530 is provided between the shelf 1113 and the hole. The sealing member 1530 is provided corresponding to the peripheral shape of the shelf 1113. In one example, the sealing member 1530 may be provided in a circular ring shape. The sealing member 1530 closes the space between the shelf 1113 and the hole so that airflow or the like that may flow between the upper surface of the scale body 1115 and the lower surface of the plate 1510 does not affect the shelf 1113.

The ionization unit 1600 supplies the ionization gas to the periphery of the measurement unit 1100. An ionization unit 1600 is provided on the outer surface of the frame 1310. A plurality of ionization units 1600 may be provided. For example, the ionization unit 1600 may be provided on the outer surface of the first frame 1311 and on the outer surface of the second frame 1313, respectively. The ionization unit 1600 may be provided facing each other. Alternatively, a plurality of ionization units 1600 may be provided on the sides of the frame 1310. [

The ionization unit 1600 includes a housing 1610, a discharge port 1620, and a controller 1630.

May be provided in the form of a substantially vertical exemption of the housing 1610. Inside the housing 1610 is provided an apparatus for providing ionizing gas. The ionizing gas is supplied with ionizing gas when static electricity is generated around the measuring unit 1100 to deionize the periphery of the measuring unit.

The discharge port 1620 is connected to the housing 1610. The discharge port 1620 is provided extending to the inside of the frame 1310. The discharge port 1620 supplies the ionizing gas supplied from the housing 1621 to the periphery of the measurement unit 1100.

The controller 1630 controls the ionizing gas in the housing 1610. The controller 1630 controls the ionization gas provided in the housing 1610 to be supplied around the measurement unit 1100 at a constant cycle.

The dustproof unit 1700 includes a support plate 1710 and a dustproof member 1730. The support plate 1710 supports the lower portion of the balance body 1115 of the measurement unit 1100. The support plate 1710 may be provided in a plate shape. In one example, the support plate 1710 is provided in the form of a rectangular plate.

A plurality of anti-vibration members 1730 are provided at the lower edge of the support plate 1710. For example, the anti-vibration members 1730 may be provided on the underside of the edge of the support plate 1710, respectively. The anti-vibration member 1730 prevents the vibration of the base 1800 from being transmitted to the measurement unit 1100. For example, the anti-vibration member 1730 may be provided as a gel type. Alternatively, the anti-vibration member 1730 may be provided in a spring type.

2 and 3, the heads 410, 420 and 430 are moved in the first direction 12 and the second direction 14 by the gantry moving unit 300 and the head moving unit 500, (Not shown). The head moving unit 500 can move the heads 410, 420 and 430 in the third direction 16 to adjust the vertical distance between the heads 410, 420 and 430 and the liquid crystal measuring unit 800.

The nozzle inspection unit 900 confirms whether or not the individual nozzles provided to the heads 410, 420 and 430 through the optical inspection are abnormal. If it is determined that there is an abnormality in the unspecified nozzle, the nozzle inspection unit 900 checks the nozzle in detail for the abnormality of the nozzle, You can proceed.

The nozzle inspection unit 900 may be disposed on one side of the substrate supporting unit 100 on the base 1800. The heads 410, 420 and 430 may be moved in the first direction 12 and the second direction 14 by the gantry moving unit 300 and the head moving unit 500 and may be located at the top of the nozzle inspection unit 900 . The head moving unit 500 can move the heads 410, 420 and 430 in the third direction 16 to adjust the vertical distance between the heads 410, 420 and 430 and the nozzle inspection unit 900.

The head cleaning unit 1000 performs a purging process and a suction process. The purging process is a process of spraying a part of the liquid crystal housed inside the heads 410, 420, and 430 at a high pressure. The suction process is a process of sucking and removing the liquid crystal remaining on the nozzle surface of the heads 410, 420 and 430 after the purging process.

The foregoing detailed description is illustrative of the present invention. In addition, the foregoing is intended to illustrate and explain the preferred embodiments of the present invention, and the present invention may be used in various other combinations, modifications and environments. That is, it is possible to make changes or modifications within the scope of the concept of the invention disclosed in this specification, within the scope of the disclosure, and / or within the skill and knowledge of the art. The embodiments described herein are intended to illustrate the best mode for implementing the technical idea of the present invention and various modifications required for specific applications and uses of the present invention are also possible. Accordingly, the detailed description of the invention is not intended to limit the invention to the disclosed embodiments. It is also to be understood that the appended claims are intended to cover further embodiments.

1: liquid crystal coating equipment 10: liquid crystal discharge part
20: substrate transfer unit 30: loading unit
40: unloading unit 50: liquid crystal supply unit
90: control unit 100: substrate holding unit
200: Gantry 300: Gantry moving unit
400: heads 500: head moving unit
600: liquid crystal supply unit 800: liquid crystal measurement unit
900: nozzle inspection unit 1000: head cleaning unit
1100: measurement unit 1300: cover unit
1500: sealing unit 1600: ionization unit
1700: dustproof unit 1800: base

Claims (12)

In the liquid crystal discharge device,
Base and
A head provided on the base to discharge the liquid crystal onto the substrate, and
And a liquid crystal measuring unit located in the base and measuring the weight of the liquid crystal discharged from the head,
The liquid crystal measuring unit includes:
A measuring unit for measuring a discharge amount of the liquid crystal;
And an ionization unit for supplying an ionized gas to the periphery of the measurement unit. The method according to claim 1,
Wherein the measurement unit comprises:
A container having a space for accommodating liquid crystal;
And a balance body for measuring the weight of the liquid crystal in the container. 3. The method of claim 2,
Wherein the liquid crystal measurement unit further includes a cover unit,
The cover unit includes:
A frame surrounding the container,
And a cover for opening and closing the container at an upper portion of the container. The method of claim 3,
Wherein the ionization unit is provided on an outer surface of the frame. The method of claim 3,
The cover unit includes:
A first frame positioned at one side of the container;
And a second frame located on the other side of the container,
Wherein the ionization unit is provided in each of the first frame and the second frame. 6. The method of claim 5,
Wherein the ionization unit provided in the first frame and the ionization unit provided in the second frame are provided so as to face each other. 7. The method according to any one of claims 1 to 6,
The ionization unit includes:
And a controller for controlling the ejection of the ionized gas around the vessel at regular time intervals. In the liquid crystal measurement unit,
A measuring unit for measuring a discharge amount of the liquid crystal;
And an ionization unit for supplying an ionizing gas to the periphery of the measurement unit. 9. The method of claim 8,
Wherein the measurement unit comprises:
A container having a space for accommodating liquid crystal;
And a balance body for measuring the weight of the liquid crystal in the container. 10. The method of claim 9,
Wherein the liquid crystal measurement unit further includes a cover unit,
The cover unit includes:
A frame surrounding the container,
And a cover for opening and closing the container at an upper portion of the container. 11. The method of claim 10,
Wherein the ionization unit is provided on an outer surface of the frame. The method according to any one of claims 8 to 11,
The ionization unit includes:
And a controller for controlling the ejection of the ionized gas around the vessel at regular time intervals.

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