KR20070055679A - Liquid crystal injection appratus and liquid crystal injection method using the same - Google Patents

Abstract

The present invention relates to a liquid crystal injection device and a liquid crystal injection method using the same, the transfer is carried out in a state in which a similar vacuum is formed between each chamber of the liquid crystal injection device.

The present invention is a degassing chamber for performing a degassing process of the liquid crystal display device; A vacuum chamber performing a vacuum process of the liquid crystal display device in which the degassing process is performed in the degassing chamber; And an injection chamber for performing an injection process of the liquid crystal display device in which the vacuum process is performed in the vacuum chamber, and a defoaming chamber for performing a defoaming process of liquid crystal to be injected into the liquid crystal display device in the injection chamber. At least one chamber of the degassing chamber, the vacuum chamber, the injection chamber, and the degassing chamber, and a chamber adjacent to the chamber may form a similar vacuum inside the chambers when the liquid crystal display or the liquid crystal is transferred. It relates to a liquid crystal injection device and a liquid crystal injection method using the same.

Liquid Crystal, Injection, Turbo Molecular Pump, High Vacuum, Ultra High Vacuum, Heat

Description

Liquid crystal injection device and liquid crystal injection method using the same {LIQUID CRYSTAL INJECTION APPRATUS AND LIQUID CRYSTAL INJECTION METHOD USING THE SAME}

1 is a plan view illustrating a liquid crystal display according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II-II 'of FIG. 1.

3 is an equivalent circuit diagram of a liquid crystal display according to an embodiment of the present invention.

4 is a plan view schematically showing a liquid crystal injection apparatus according to an embodiment of the present invention.

5 is a view for explaining a defoaming process according to an embodiment of the present invention.

6 is a view for explaining an injection process according to an embodiment of the present invention.

<Code Description of Main Parts of Drawing>

10 liquid crystal display device 20 liquid crystal

30 sealant 40 thermosetting sealant

50 UV curable sealant 60 Color filter substrate

70: thin film transistor substrate 100: liquid crystal injection device

110: deaeration chamber 120: vacuum chamber

130: defoaming chamber 140: injection chamber

150: first gate valve 160: second gate valve

170: third gate valve 180: dry pump

190: turbomolecular pump 250: heater

The present invention relates to a liquid crystal injection device and a liquid crystal injection method using the same, and more particularly, to a liquid crystal injection device and a liquid crystal injection method using the same in a state where a similar vacuum is formed between each chamber of the liquid crystal injection device.

The most commonly used display device is the CRT (Cathode Ray Tube). However, since CRTs are difficult to reduce in size, CRTs can be used as alternatives to CRTs, such as liquid crystal displays (LCDs), plasma display panels (PDPs), and organic light emitting diodes (OLEDs). Flat panel displays (FPDs) such as these have been developed and used. Among them, liquid crystal display devices having low power consumption and high resolution and capable of large area are the most widely used in recent years.

BACKGROUND ART A liquid crystal display device displays an image by controlling light transmittance of a liquid crystal using an electric field, and includes a color filter substrate and a thin film transistor substrate that are bonded to each other with a liquid crystal interposed therebetween. In order to dispose the liquid crystal between the color filter substrate and the thin film transistor substrate, a liquid crystal injection device having a plurality of chambers is used.

However, when the liquid crystal is not injected into the liquid crystal display device between each chamber or the liquid crystal degassed is transferred between different chambers in which different vacuums are formed, the injection process proceeds inefficiently and the manufacturing time increases. In addition, defects such as unfilled liquid crystal are generated because of this.

Accordingly, a technical object of the present invention is to provide a liquid crystal injection device and a liquid crystal injection method using the same, the transfer is carried out in a state in which a similar vacuum is formed between each chamber of the liquid crystal injection device.

The present invention is a degassing chamber for performing a degassing process of the liquid crystal display device; A vacuum chamber performing a vacuum process of the liquid crystal display device in which the degassing process is performed in the degassing chamber; And an injection chamber for performing an injection process of the liquid crystal display device in which the vacuum process is performed in the vacuum chamber, and a defoaming chamber for performing a defoaming process of liquid crystal to be injected into the liquid crystal display device in the injection chamber. At least one chamber of the degassing chamber, the vacuum chamber, the injection chamber, and the degassing chamber, and a chamber adjacent to the chamber may form a similar vacuum inside the chambers when the liquid crystal display or the liquid crystal is transferred. It provides a liquid crystal injection device characterized in that.

A dry pump connected to each of the degassing chamber, the vacuum chamber, the injection chamber, and the degassing chamber; And a turbomolecular pump connected to each of the vacuum chamber, the injection chamber, and the degassing chamber.

Here, a similar vacuum is formed in the degassing chamber and the inside of the vacuum chamber by the dry pump connected to each of the degassing chamber and the vacuum chamber.

Specifically, the inside of the degassing chamber and the inside of the vacuum chamber is characterized in that the low vacuum is formed.

On the other hand, the inside of the vacuum chamber, the injection chamber and the inside of the degassing chamber by the turbo molecular pump connected to each of the vacuum chamber, the injection chamber and the degassing chamber is characterized in that a similar vacuum is formed.

Specifically, the inside of the vacuum chamber, the inside of the injection chamber and the inside of the defoaming chamber is characterized in that the high vacuum or ultra-high vacuum is formed.

The present invention comprises the steps of performing a degassing process of the liquid crystal display device is not injected into the liquid crystal chamber; Performing a vacuum process of the liquid crystal display device in which the degassing process is performed in a vacuum chamber; Performing a defoaming process of the liquid crystal to be injected into the liquid crystal display in a defoaming chamber; Including an injection chamber for injecting the liquid crystal subjected to the defoaming step to the liquid crystal display device subjected to the vacuum process in the injection chamber, wherein the degassing chamber, the vacuum chamber, the injection chamber and the defoaming At least one of the chambers and the chamber adjacent to the chamber provides a liquid crystal injection method characterized in that a similar vacuum is formed inside the chambers during the transfer of the liquid crystal display or the liquid crystal.

The method may further include forming the inside of the vacuum chamber into a vacuum similar to the inside of the degassing chamber before the degassing process is completed.

Specifically, the inside of the degassing chamber and the inside of the vacuum chamber are formed at low vacuum by using a dry pump connected to each of the degassing chamber and the vacuum chamber.

On the other hand, before the vacuum process and the degassing step is completed, the injection chamber is characterized in that it further comprises the step of forming a vacuum similar to at least any one of the inside of the vacuum chamber and the inside of the defoaming chamber.

Specifically, the inside of the vacuum chamber, the inside of the defoaming chamber and the inside of the injection chamber using a turbo molecular pump connected to each of the vacuum chamber, the degassing chamber and the injection chamber are characterized in that the high vacuum or ultra-high vacuum is formed. .

Other features of the present invention will become apparent from the description of the embodiments with reference to the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a plan view illustrating a liquid crystal display according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II 'of FIG. 1.

1 and 2, a liquid crystal display device 10 according to an exemplary embodiment of the present invention includes a color filter substrate 60 and a thin film transistor substrate bonded by a sealant 30 with a liquid crystal 20 interposed therebetween. 70).

The liquid crystal 20 is disposed in a closed area provided by the sealant 30 and is formed by a difference between the common voltage from the common electrode of the color filter substrate 60 and the pixel voltage from the pixel electrode of the thin film transistor substrate 70. Rotate to adjust the light transmittance. To this end, the liquid crystal 20 is made of a material having dielectric anisotropy and refractive index anisotropy.

The sealant 30 is made of an epoxy resin or the like and includes a thermosetting sealant 40 that is cured by heat and an ultraviolet curable sealant 50 that is cured by ultraviolet light.

The thermosetting sealant 40 is formed along the periphery of the liquid crystal display 10 except for the injection hole into which the liquid crystal 20 is injected. The thermosetting sealant 40 is applied to the color filter substrate 60 or the thin film transistor substrate 70 and then to a predetermined heat (for example, 120 ° C.) for a predetermined time (for example, 1 hour). Hardened | cured and formed.

The ultraviolet curable sealant 50 is formed at an injection hole into which the liquid crystal 20 is injected. Here, the ultraviolet curable sealant 50 is formed to be in contact with the thermosetting sealant 40. For this reason, a closed region is formed by the ultraviolet curable sealant 50 and the thermosetting sealant 40, and the liquid crystal 20 is disposed in the closed region. The ultraviolet curable sealant 50 is hardened by a predetermined amount of ultraviolet radiation for a predetermined time after being immersed in a container containing the ultraviolet curable sealant 50.

The color filter substrate 60 may include a black matrix for preventing light leakage, a color filter for color implementation, a common electrode for applying a common voltage to the liquid crystal 20, and a column spacer for maintaining a cell gap on a first substrate such as glass or plastic. It includes.

The black matrix is formed of black metal or organic material that can block light in order to block external light and prevent light leakage current of the thin film transistor.

Color filters include red, green, and blue color filters, each of which contains red, green, and blue pigments that transmit or absorb light of a particular wavelength. Color is realized through additive color mixing of red, green, and blue light passing through each of the red, green, and blue color filters.

The common electrode is formed of a transparent conductive metal such as indium tin oxide (ITO) or indium zinc oxide (IZO) to apply a common voltage to the liquid crystal 20.

The column spacer is formed of an organic material and maintains a cell gap.

The thin film transistor substrate 70 includes a thin film transistor, a pixel electrode connected to the thin film transistor, and a storage electrode formed in a pixel region defined by the intersection of data lines and gate lines on a second substrate such as glass or plastic.

As shown in FIG. 3, the thin film transistor is formed in connection with the gate line 80 and the data line 90. The thin film transistor TFT transfers an image signal supplied from the data line 90 to the pixel electrode in response to a scan signal supplied from the gate line 80.

The pixel electrode applies a pixel voltage to the liquid crystal 20 using the image signal charged therein. For this purpose, the pixel electrode is formed of a transparent conductive metal such as ITO or IZO. The liquid crystal cell Clc is formed by the pixel electrode, the liquid crystal 20, and the common electrode.

The storage electrode maintains the pixel voltage charged in the pixel electrode for one frame using a common voltage from the storage line connected thereto. The storage capacitor Cst is formed by at least one insulating layer between the storage electrode and the pixel electrode and between the storage electrode and the pixel electrode.

Meanwhile, the manufacturing process of the liquid crystal display device 10 will be described. First, a color filter array including a black matrix, a color filter, a common electrode, and a column spacer is formed on a first substrate and a gate is formed on the second substrate. A thin film transistor array including a line 80 and a data line 90, a thin film transistor (TFT), a pixel electrode, and a storage electrode is formed. Subsequently, the thermosetting sealant 40 is coated on the first substrate or the second substrate, the first and second substrates are bonded together, and the thermosetting sealant 40 is thermally cured and then cut. Thereafter, the liquid crystal 20 is injected, the injection hole is immersed in a container containing the ultraviolet curable sealant 50, and the ultraviolet curable sealant 50 is ultraviolet cured to manufacture the liquid crystal display device 10. Here, a liquid crystal injection device as shown in FIG. 4 is used to inject the liquid crystal 20 into the liquid crystal display device 10.

4 is a plan view schematically showing a liquid crystal injection apparatus according to an embodiment of the present invention.

4, the liquid crystal injection device 100 according to an embodiment of the present invention is the degassing chamber 110, the vacuum chamber 120, the third gate valve (connected via the first gate valve 150) The degassing chamber 130 and the second gate valve 160 connected to each other are connected to the vacuum chamber 120, and the degassing chamber 130 is connected to the third gate valve 170. The injection chamber 140 is included.

The degassing chamber 110 uses a low vacuum (3.3 * 10 ³ Pa ~ 10 ⁵ Pa) and heat inside the degassing chamber 110 for a predetermined time to degas the gas in the liquid crystal display device into which no liquid crystal is injected. To perform the chamber. To this end, the degassing chamber 110 is connected to the first and second valves 260 and 270 connected to the dry pump 180, respectively.

The dry pump 180 is a pump for initial vacuum and low vacuum formation. The first valve 260 is a pumping line valve for initial vacuum formation. The second valve 270 is a pumping line valve for forming a low vacuum.

The degassing chamber 110 includes a heater 250 such as an infrared heating lamp for heating the liquid crystal display device into which a liquid crystal is not injected to a predetermined temperature. The liquid crystal display device in which the liquid crystal is not injected is heated by the heater 250 within a temperature range in which the physicochemical properties of the organic / inorganic materials of the liquid crystal display device are not injected. Here, the heat, that is, the temperature, is a factor of the interaction to assist the degassing of the liquid crystal display in which the liquid crystal is not injected, and when the heat is operated together with the vacuum, a high temperature can be obtained even at a low temperature.

The degassing chamber 110 displays a vacuum switch 200 for measuring and displaying an initial vacuum degree to measure pressure and heat in the degassing chamber 110, and displays a target pressure value and an actual pressure value, as well as a temperature. It further includes a plurality of thermocouple gauges (210) for measuring and displaying this value in terms of pressure, and a heat gauge (220) for measuring and displaying temperature.

In addition, the degassing chamber 110 further includes first to third lamps 350, 360, and 370 to inform the worker of the progress of the degassing process.

The first lamp 350 is a lamp indicating a pumping step by the dry pump 180. The second lamp 360 is a lamp indicating a heating step by the heater 250. The third lamp 370 is a lamp indicating a cooling step. The first to third lamps 350, 360, and 370 are turned on and off, respectively, to display the progress of the degassing process to the worker. For example, if the first lamp 350 is turned on, it indicates that pumping is being performed by the dry pump 180 in the degassing chamber 110.

The vacuum chamber 120 is a liquid crystal in which the liquid crystal is not injected using a high vacuum (10 ^-4 Pa to 10 ^-1 Pa) or an ultra high vacuum (10 ^-7 Pa to 10 ^-4 Pa) inside the vacuum chamber 120 for a predetermined time. It is a chamber that performs a vacuum process to enable the injection process by making the inside of the display device high or ultra high vacuum. To this end, the vacuum chamber 120 is connected to the third and fourth valves 280 and 290 respectively connected to the dry pump 180, and is connected to the dry pump 180 with the sixth valve 310 interposed therebetween. It is connected to the fifth valve 300 connected to the turbo molecular pump 190.

The third valve 280 is a pumping line valve for initial vacuum formation. The fourth valve 290 is a pumping line valve for forming a low vacuum. The sixth valve 310 is a line valve connecting the dry pump 180 and the turbo molecular pump 190. Turbomolecular pump 190 is a pump for high vacuum or ultra-high vacuum formation. The fifth valve 300 is a pumping line valve for forming a high or ultra high vacuum.

The vacuum chamber 120 measures the pressure in the vacuum chamber 120, the vacuum switch 200, a plurality of thermocouple gauges 210, the ion gauge after measuring the amount of ions and converting the ion amount to the pressure (230) ) Is included.

In addition, the vacuum chamber 120 further includes fourth to eighth lamps 380, 390, 400, 410, and 420 to inform the worker of the progress of the vacuum process.

The fourth lamp 380 is a lamp indicating a pumping step by the dry pump 180. The fifth lamp 390 is a lamp indicating that the sixth valve 310 has reached a pressure that can be opened for switching from the dry pump 180 to the turbomolecular pump 190. The sixth lamp 400 is a lamp indicating a pumping step by the turbomolecular pump 190. The seventh lamp 410 is a lamp indicating that switching to the next step is possible after the pumping by the turbo molecular pump 190 is completed. The eighth lamp 420 is a lamp indicating a step of venting a gas such as N2. The fourth to eighth lamps 380, 390, 400, 410, and 420 are turned on and off, respectively, to display the progress of the vacuum process to the worker.

The defoaming chamber 130 is a chamber for performing a defoaming process of defoaming the gas contained in the liquid crystal by using a high or ultra high vacuum inside the defoaming chamber 130 for a predetermined time. To this end, the defoaming chamber 130 is connected to the seventh and eighth valves 320 and 330 connected to the turbomolecular pump 190 connected to the dry pump 180, respectively.

The seventh valve 320 is a pumping line valve for forming an initial vacuum and a low vacuum. The eighth valve 330 is a pumping line valve for forming a high or ultra high vacuum.

Meanwhile, the existing defoaming chamber adopts a structure in which the degassing chamber is formed at a low vacuum by a dry pump to perform a defoaming process. That is, the conventional defoaming chamber adopts a structure that is not connected to the turpo molecule pump, and thus cannot form a high vacuum or an ultra high vacuum by the turbo molecular pump.

However, in the embodiment of the present invention, the defoaming chamber 130 is connected to the turbo molecular pump 190 with the eighth valve 330 interposed therebetween. For this reason, the inside of the degassing chamber 130 can be formed similar to the vacuum chamber 120, that is, high vacuum or ultra-high vacuum.

The defoaming chamber 130 quantifies the vacuum not recognized by the vacuum switch 200, the thermocouple gauge 210, and the thermocouple gauge 210 to measure the pressure in the defoaming chamber 130, and the target pressure value and the measured pressure. It includes a number of diaphragm gauges 240 that display values.

In addition, the defoaming chamber 130 further includes the fourteenth to eighteenth lamps (480, 490, 500, 510, 520) to inform the worker of the progress of the defoaming process.

The fourteenth lamp 480 is a lamp indicating that the defoaming process can be started. The fifteenth lamp 490 is a lamp indicating a pumping step of the dry pump 180 and the turbomolecular pump 190. The sixteenth lamp 500 is a lamp indicating an additional defoaming time for complete defoaming after the defoaming process is performed to some extent. The seventeenth lamp 510 is a lamp indicating that switching to the next step is possible after the additional defoaming. The eighteenth lamp 520 is a lamp indicating a step of venting a gas such as N2. The fourteenth to eighteenth lamps 480, 490, 500, 510, and 520 are turned on and off, respectively, to display the progress of the defoaming process to the worker.

The injection chamber 140 performs an injection process for injecting a liquid crystal into the liquid crystal display by contacting the liquid crystal display device into which the liquid crystal is not injected and the degassed liquid crystal using a high vacuum or an ultra high vacuum inside the injection chamber 140 for a predetermined time. It is a chamber. To this end, the injection chamber 140 is connected to a ninth valve 340 connected to the turbomolecular pump 190 connected to the dry pump 180.

The ninth valve 340 is a pumping line valve for forming an initial vacuum and a low vacuum, a high vacuum or an ultra high vacuum.

Meanwhile, the conventional injection chamber adopts a structure in which the inside of the injection chamber is formed at a low vacuum by a dry pump to perform the injection process. That is, the conventional injection chamber adopts a structure that is not connected to the turpo molecular pump, and thus cannot form a high vacuum or an ultra high vacuum by the turbo molecular pump.

However, in the embodiment of the present invention, the injection chamber 140 is connected to the turbo molecular pump 190 with the ninth valve 340 interposed therebetween. For this reason, the injection chamber 140 may be formed in a vacuum, that is, a high vacuum or an ultra high vacuum, similar to the inside of the vacuum chamber 120 and the degassing chamber 130. In other words, since the injection chamber 140 forms a vacuum similar to the vacuum chamber 120 and the degassing chamber 130, that is, high vacuum and ultra high vacuum, the injection chamber 140 may maximize the efficiency of the injection process and shorten the injection process time. For this reason, defects, such as a liquid crystal unfilled, can be prevented.

The injection chamber 140 includes a vacuum switch 200, a thermocouple gauge 210, and a plurality of diaphragm gauges 240 to measure the pressure in the injection chamber 140.

In addition, the injection chamber 140 further includes the ninth to thirteenth lamps 430, 440, 450, 460, and 470 to inform the worker of the progress of the injection process.

The ninth lamp 430 is a lamp indicating a pumping step of the dry pump 180 and the turbo molecular pump 190. The tenth lamp 440 is a lamp indicating that switching to the next step is possible after the pumping of the turbomolecular pump 190 is completed. The eleventh lamp 450 is a lamp for displaying a natural injection time, which is a time for naturally injecting the liquid crystal in a high or ultra high vacuum state. The twelfth lamp 460 is a lamp indicating the step of introducing N2 into the injection chamber 140 to completely fill the liquid crystal. The thirteenth lamp 470 is a lamp indicating an additional injection time which is a time at which the liquid crystal is completely filled by N2. The ninth to thirteenth lamps 430, 440, 450, 460, and 470 are turned on and off, respectively, to indicate the progress of the injection process to the worker.

The liquid crystal injection method using the liquid crystal injection device 100 will be described in detail. First, the liquid crystal display device without the liquid crystal is loaded into the degassing chamber 110. Subsequently, the degassing chamber 110 forms a low vacuum inside the degassing chamber 110 by using the dry pump 180 and uses the heater 250 to set the liquid crystal display device into which the liquid crystal is not injected at a predetermined temperature. It is heated to perform the degassing process.

Meanwhile, the vacuum chamber 120 maintains the standby state until the first gate valve 150 is opened after forming a vacuum, that is, a low vacuum, similar to the inside of the degassing chamber 110 before the degassing process is completed. At the same time as the degassing process in the degassing chamber 110 ends, the first gate valve 150 is opened, and the liquid crystal display device, in which no liquid crystal is injected, is transferred from the degassing chamber 110 to the vacuum chamber 120.

The transfer method of the liquid crystal display device in which the liquid crystal is not injected from the degassing chamber into the vacuum chamber is a vacuum chamber after the inside of the degassing chamber is reduced to atmospheric pressure after the degassing process using low vacuum and heat is performed in the degassing chamber. As a result, a liquid crystal display in which no liquid crystal is injected is transferred.

However, in the exemplary embodiment of the present invention, the transfer method of the liquid crystal display device in which the liquid crystal is not injected from the degassing chamber 110 to the vacuum chamber 120 is similar to that in the degassing chamber 110 and the inside of the vacuum chamber 120. After low vacuum is formed, it is transferred. This is because, as described above, a vacuum similar to the inside of the degassing chamber 110 is formed before the degassing process is completed in the inside of the vacuum chamber 120. As a result, the heating effect of the liquid crystal display device in which the liquid crystal is not injected by the heater 250 in the degassing chamber 110 is transmitted to the vacuum chamber, so that the liquid crystal display device in which the liquid crystal is not injected in the vacuum chamber 120 has heat. This is preserved. In addition, since the liquid crystal display is not injected into the vacuum chamber 120 is transferred to the vacuum chamber 120 in a state in which the low vacuum is not reduced to atmospheric pressure in the degassing chamber 110, the working time can be shortened.

When the first gate valve 150 is closed after the liquid crystal display device in which the liquid crystal is not injected is transferred to the vacuum chamber 120, the vacuum chamber 120 uses the dry pump 180 and the turbo molecular pump 190 to form the liquid crystal. A vacuum process is performed to make the uninjected liquid crystal display device high vacuum or ultra high vacuum.

At this time, the defoaming chamber 130 performs a defoaming process, as shown in FIG. In detail, the container 530 containing the liquid crystal 20 is loaded into the defoaming chamber 130. In addition to the liquid crystal 20, a rigid sphere 540 that does not react with the liquid crystal 20 is mixed in the container 530. Here, aluminum, Teflon, or the like may be used as the rigid sphere 540.

When the liquid crystal 20 and the rigid sphere 540 contain the container 530 is loaded into the defoaming chamber 130, the defoaming chamber 130 is a vacuum chamber 120 using a dry pump 180 and a turbo molecular pump 190 ) To form a vacuum similar to the inside, ie high or ultra high vacuum. Subsequently, bubbles dissolved in the liquid crystal 20 are rapidly removed by the ultrasonic generator 550 disposed under the container 530 due to the flow of the rigid sphere 540 and the temperature rise of the liquid crystal 20. After the defoaming process is performed, the defoaming chamber 130 continuously maintains a high vacuum or ultra high vacuum until the third gate valve 170 is opened. Here, the defoaming process may be performed after the low vacuum is formed by the dry pump 180 and after the high defoaming process is performed by the turbomolecular pump 190, the high or ultra high vacuum is formed in the third gate valve ( And hold until 170 is opened.

Meanwhile, the injection chamber 140 also has a vacuum similar to that of the inside of the vacuum chamber 120 and the inside of the degassing chamber 130 before the end of the vacuum process in the vacuum chamber 120 and the degassing process in the degassing chamber 130, that is, high vacuum. Alternatively, after forming an ultra-high vacuum, it maintains a standby state. As soon as the vacuum process in the vacuum chamber 120 is finished, the second gate valve 160 is opened to transfer the liquid crystal display device into which the liquid crystal is not injected, from the vacuum chamber 120 to the injection chamber 140.

Since the transfer method of the liquid crystal display device in which the liquid crystal is not injected from the vacuum chamber into the injection chamber is no turbomolecular pump, that is, the transfer method to the injection chamber in which the low vacuum is formed by the dry pump, the second gate valve When opened, the high vacuum of the vacuum chamber is primarily destroyed.

However, in the exemplary embodiment of the present invention, the transfer method of the liquid crystal display device in which the liquid crystal of the injection chamber 140 is not injected from the vacuum chamber 120 is similar to that in which the interior of the injection chamber 140 and the interior of the vacuum chamber 120 are similar. , High vacuum or ultra high vacuum is formed and then transferred. This is because the inside of the injection chamber 140 is formed with a vacuum similar to the inside of the vacuum chamber 120 before the vacuum process is completed. Therefore, the heating effect in the degassing chamber 110 is transmitted to the injection chamber 140, so that the filling of the liquid crystal may be well. In addition, since the high vacuum or ultra-high vacuum is transported in a state in which it is not destroyed, the liquid crystal injection equipment 100 can be efficiently operated and the injection process time can be shortened.

Meanwhile, as the degassing process in the degassing chamber 130 ends, the third gate valve 170 opens and the container 530 containing the degassed liquid crystal 20 is transferred into the injection chamber 140.

Since the transfer method of the container containing the degassed liquid crystal from the conventional defoaming chamber to the injection chamber is not a turbo molecular pump, that is, a transfer method from the defoaming chamber in which low vacuum is formed by a dry pump to the injection chamber in which low vacuum is formed. Firstly, the high vacuum of the vacuum chamber is destroyed, and the medium / high vacuum of the vacuum chamber is secondly destroyed.

However, in the embodiment of the present invention, since the inside of the degassing chamber 130 and the inside of the injection chamber 140 are formed in a similar vacuum, the high vacuum of the vacuum chamber 120 is not secondaryly destroyed and the efficiency of the injection process is improved. Maximization and injection process time can be shortened.

After the liquid crystal display without liquid crystal is transferred to the injection chamber 140, the second gate valve 160 is closed, and the container 530 containing the degassed liquid crystal 20 is transferred to the injection chamber 140. When the third gate valve 170 is closed, as shown in Figure 6, the injection process is in progress. In this case, the jig 560 may be used to fix the liquid crystal display 10. When the injection process in the injection chamber 140 is completed, the liquid crystal display device 10 is manufactured by encapsulating the UV-curable sealant 50.

In the liquid crystal injection device and the liquid crystal injection method using the same, a similar vacuum is formed between the degassing chamber and the vacuum chamber, and then the liquid crystal display device without the liquid crystal is transferred. For this reason, the liquid crystal filling without liquid crystal is transferred to the vacuum chamber while the heat in the degassing chamber is preserved. In addition, the liquid crystal display device in which the liquid crystal is not injected into the injection chamber is transferred from the vacuum chamber to the injection chamber while a vacuum similar to that of the vacuum chamber is formed. Since it is transferred, it is possible to shorten the liquid crystal injection time and prevent defects such as unfilled liquid crystal.

In the detailed description of the present invention described above with reference to the preferred embodiment of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge of the present invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope of the art.

Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (11)

A degassing chamber for performing a degassing process of the liquid crystal display device; A vacuum chamber performing a vacuum process of the liquid crystal display device in which the degassing process is performed in the degassing chamber; And An injection chamber for performing an injection process of the liquid crystal display device in which the vacuum process is performed in the vacuum chamber; Defoam chamber for performing a defoaming process of the liquid crystal to be injected into the liquid crystal display device in the injection chamber, At least one chamber of the degassing chamber, the vacuum chamber, the injection chamber, and the degassing chamber, and a chamber adjacent to the chamber, wherein a similar vacuum is formed inside the chambers when the liquid crystal display or the liquid crystal is transferred. Liquid crystal injection device characterized in that. The method of claim 1, A dry pump connected to each of the degassing chamber, the vacuum chamber, the injection chamber, and the degassing chamber; And a turbomolecular pump connected to each of the vacuum chamber, the injection chamber, and the degassing chamber. The method of claim 2, And a similar vacuum is formed in the degassing chamber and the inside of the vacuum chamber by the dry pump connected to each of the degassing chamber and the vacuum chamber. The method of claim 3, Liquid crystal injection device characterized in that the low vacuum is formed in the degassing chamber and the inside of the vacuum chamber. The method of claim 2, And a similar vacuum is formed inside the vacuum chamber, inside the injection chamber, and inside the degassing chamber by the turbomolecular pump connected to the vacuum chamber, the injection chamber, and the degassing chamber, respectively. The method of claim 5, The inside of the vacuum chamber, the inside of the injection chamber and the inside of the degassing chamber liquid crystal injection device, characterized in that the high vacuum or ultra-high vacuum is formed. Performing a degassing process of the liquid crystal display device in which the liquid crystal is not injected in a degas chamber; Performing a vacuum process of the liquid crystal display device in which the degassing process is performed in a vacuum chamber; Performing a defoaming process of the liquid crystal to be injected into the liquid crystal display in a defoaming chamber; Performing an injection process injecting the liquid crystal in which the defoaming process is performed into the liquid crystal display device on which the vacuum process is performed, in an injection chamber; At least one chamber of the degassing chamber, the vacuum chamber, the injection chamber, and the degassing chamber, and a chamber adjacent to the chamber, wherein a similar vacuum is formed inside the chambers when the liquid crystal display or the liquid crystal is transferred. Liquid crystal injection method characterized by. The method of claim 7, wherein And forming the inside of the vacuum chamber into a vacuum similar to the inside of the degassing chamber before the degassing process is completed. The method of claim 8, And degassing the inside of the degassing chamber and the inside of the vacuum chamber using a dry pump connected to the degassing chamber and the vacuum chamber, respectively. The method of claim 7, wherein And forming the inside of the injection chamber into a vacuum similar to at least one of the inside of the vacuum chamber and the inside of the degassing chamber before the vacuum process and the degassing process are finished. The method of claim 10, Liquid crystal injection method characterized in that the vacuum chamber, the degassing chamber and the injection chamber connected to each of the injection chamber using the turbo molecular pump to form the inside of the vacuum chamber, the inside of the defoaming chamber and the injection chamber of high vacuum or ultra-high vacuum .

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