KR20150066426A - Method and apparatus for fabricating liquid crystal panel - Google Patents

Abstract

The present invention provides an apparatus and a method for manufacturing a liquid crystal panel whereby temperature irregularity of a panel to be processed and temperature change of the panel are prevented. According to an embodiment of the present invention, the apparatus (1) for manufacturing a liquid crystal panel includes: a light irradiation unit (10) which emits light; an irradiation box (20) including a window member (21), which transmits the light from the light irradiation unit (10); a stage (30) that is arranged to face the window member (21), includes an arranged side (31) on which a panel (2) to be processed is placed, and circulates fluid for controlling the temperature of an area of the arranged side (31) irradiated with the light therein; a chamber (40) which covers the irradiation box (20) and the stage (30); and a circulation-type air conditioner (50) which controls the temperature in the chamber (40) by discharging gas, introduced through an inlet (51) installed on the chamber (40), through an outlet (52).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manufacturing method of a liquid crystal panel,

The present invention relates to an apparatus for manufacturing a liquid crystal panel and a method for manufacturing the liquid crystal panel.

In the production of a liquid crystal panel, a light source such as an ultraviolet lamp is used to irradiate light to a panel to be processed having a light-sensitive material having a photoreactive property, A method of performing the above-mentioned process.

Particularly, in order to develop a state in which the blue phase liquid crystal is stabilized with the polymer, that is, the polymer stabilized blue phase (PSBP), the temperature unevenness of the panel to be treated at the time of light irradiation and the change in temperature with time, The effect is large. Therefore, in the method of manufacturing a liquid crystal panel for irradiating light of a predetermined wavelength to the panel to be treated, it is strongly desired to suppress the unevenness of the temperature of the panel to be treated at the time of ultraviolet irradiation and suppress the temperature change of the surface of the panel to be processed.

Thus, an ultraviolet ray irradiation apparatus used in a manufacturing process of a liquid crystal panel including a photoreactive substance has been proposed (for example, see Patent Document 1). The ultraviolet irradiation apparatus disclosed in Patent Document 1 has a configuration in which a cooling mechanism for supplying cooling air to the inside of the mantle tube in each of the light source elements is described.

Japanese Laid-Open Patent Publication No. 2011-215463

However, in the ultraviolet irradiation apparatus disclosed in Patent Document 1, it is difficult to suppress the unevenness of the temperature of the panel to be treated for expressing the polymer-stabilized blue phase or to suppress the temperature change of the panel to be treated.

An object of the present invention is to provide an apparatus for manufacturing a liquid crystal panel and a method for manufacturing the liquid crystal panel, which suppress the unevenness of the temperature of the panel to be processed and suppress the change of the temperature of the panel to be processed.

An apparatus for manufacturing a liquid crystal panel according to an embodiment includes a light irradiation unit; Survey box; stage; chamber; And a circulating air cooling device. The light irradiation unit emits light. The irradiation box has a window that transmits light from the light irradiation part. The stage is provided with a placement surface which is provided so as to face the window and on which the panel to be processed is placed. The stage allows a liquid to be temperature-controlled to flow in a region irradiated with light on the placement surface inside. The chamber covers the irradiation box and the stage. The circulation type air cooling apparatus has an inlet and an outlet provided in the chamber, and the gas introduced from the inlet is discharged from the outlet and controls the temperature in the chamber.

According to the present invention, it is possible to provide a manufacturing apparatus of a liquid crystal panel and a manufacturing method of a liquid crystal panel, which suppress the unevenness of the temperature of the panel to be processed and suppress the change of the temperature of the panel to be processed.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a schematic configuration of an apparatus for manufacturing a liquid crystal panel according to an embodiment; FIG.
Fig. 2 is a cross-sectional view showing a schematic configuration of an apparatus for manufacturing a liquid crystal panel according to the embodiment. Fig.
3 is a cross-sectional view showing a configuration of a panel to be irradiated with light by a liquid crystal panel manufacturing apparatus according to the embodiment.
4 is a view for explaining light transmitted through a window of a liquid crystal panel manufacturing apparatus according to the embodiment.
Fig. 5 is a cross-sectional view showing the structure of a window of a liquid crystal panel manufacturing apparatus according to the embodiment. Fig.
Fig. 6 is a plan view showing a comparative example and measurement portions of temperature changes of Inventive Products 1 and 2. Fig.
Fig. 7 is a cross-sectional view showing a schematic configuration of an apparatus for manufacturing a liquid crystal panel according to a modified example of the embodiment. Fig.
8 is a cross-sectional view showing a schematic configuration of an apparatus for manufacturing a liquid crystal panel according to another modification of the embodiment.

The apparatus 1 for manufacturing a liquid crystal panel according to the embodiment described below includes a light irradiation unit 10, a radiation box 20, a stage 30, a chamber 40, and a circulation type air cooling apparatus 50 . The light irradiation unit 10 emits light. The irradiation box 20 has a window member 21 through which light from the light irradiation unit 10 is transmitted. The stage 30 is provided with a placement surface 31 which faces the window member 21 and on which the target panel 2 is placed. The stage 30 allows the liquid to be temperature-controlled to flow in the region where the light of the placement surface 31 is irradiated inside. The chamber 40 covers the irradiation box 20 and the stage 30. The circulation type air cooling apparatus 50 is provided with an inlet 51 and an outlet 52 provided in the chamber 40. The gas introduced from the inlet 51 is discharged from the outlet 52, Temperature is controlled.

The apparatus 1 for manufacturing a liquid crystal panel according to the embodiment described below can prevent the window member 21 from transmitting ultraviolet rays or infrared rays of a predetermined wavelength or transmit both ultraviolet rays and infrared rays of predetermined wavelengths .

In the liquid crystal panel manufacturing apparatus 1 according to the embodiment described below, the panel to be processed 2 includes the color filter substrate 3, the counter substrate 4, and the liquid crystal layer 5. The counter substrate 4 is opposed to the color filter substrate 3. The liquid crystal layer 5 is provided between the color filter substrate 3 and the counter substrate 4. The target panel 2 is disposed on the stage 30 so that the color filter substrate 3 side is in contact with the placement surface 31 and the light irradiation portion 10 is disposed on the side of the target panel 2 from the side of the opposite substrate 4. [ As shown in FIG.

In the liquid crystal panel manufacturing apparatus 1 according to the embodiment described below, the liquid crystal layer 5 includes at least a nematic liquid crystal composition, a liquid crystal composition which develops a blue phase, and a polymerizable monomer. The liquid crystal layer 5 emits a polymer-stabilized blue phase upon irradiation of light.

The apparatus 1 for manufacturing a liquid crystal panel according to the embodiment described below is characterized in that the light irradiating unit 10 has a main wavelength of 300 to 400 nm and an illuminance of light of a wavelength of 365 nm And a light source 11 of 15 mW / cm 2 or less.

In the liquid crystal panel manufacturing apparatus 1 according to the embodiment described below, the temperature of the panel 2 to be treated when light is irradiated is set to be +/- 0.5 DEG C The stage 30 and the circulating air cooling apparatus 50 are controlled.

In addition, the manufacturing method of the liquid crystal panel according to the embodiment described below includes a light irradiation part 10 for emitting light; A radiation box (20) having a window (21) for transmitting light from the light irradiation part (10); And a placement surface 31 on which the target panel 2 is placed so as to face the window member 21 and which has a stage 31 for circulating liquid for controlling the temperature in a region irradiated with light of the placement surface 31, (30); A chamber 40 covering the irradiation box 20 and the stage 30; And an inlet port 51 and an outlet port 52 provided in the chamber 40. The gas introduced from the inlet port 51 is discharged from the outlet port 52, Disposing the target panel (2) on the placement surface (31) of the stage (30), with the air cooling device (53); The liquid is flowed into the stage 30 and the gas is introduced into the chamber 40 from the introduction port 51 and circulated from the discharge port 52 to the target panel 2 disposed on the placement surface 31 And irradiating light from the light irradiation unit (10) through the window (21).

[Embodiment Mode]

Next, a liquid crystal panel manufacturing apparatus 1 according to an embodiment of the present invention will be described with reference to the drawings. 2 is a cross-sectional view showing a schematic configuration of a liquid crystal panel manufacturing apparatus according to an embodiment. Fig. 3 is a cross-sectional view of a liquid crystal display device according to an embodiment. Fig. FIG. 4 is a view for explaining light transmitted through a window of a liquid crystal panel manufacturing apparatus according to the embodiment, and FIG. 5 is a sectional view Sectional view showing a structure of a window of a manufacturing apparatus for a liquid crystal panel.

(Hereinafter simply referred to as a manufacturing apparatus) 1 of the embodiment shown in Fig. 1 irradiates light to a panel 2 to be treated while maintaining a constant temperature, and irradiates the panel 2 to be processed For example, a polymer-stabilized blue phase constituting a liquid crystal display. As shown in Fig. 3, the panel 2 to be irradiated with light by the manufacturing apparatus 1 includes a color filter substrate 3, an opposing substrate 4 opposed to the color filter substrate 3, And a liquid crystal layer 5 provided between the filter substrate 3 and the counter substrate 4.

The color filter substrate 3 is, for example, a color filter that transmits red, green, and blue light, is disposed on a substrate and covered with a protective film. The counter substrate 4 is a substrate on which electrodes are arranged in an array. The liquid crystal layer 5 includes at least a nematic liquid crystal composition, a liquid crystal composition which expresses a blue phase, and a polymerizable monomer. The liquid crystal layer 5 emits a polymer-stabilized blue phase by irradiation with light by the manufacturing apparatus 1. [

The nematic liquid crystal composition constituting the liquid crystal layer 5 is composed of a material having dielectric anisotropy.

The liquid crystal composition which exhibits a blue phase is a material that enables a higher response than a nematic liquid crystal composition by irradiating light while expanding the temperature range at which it can stably exist at room temperature, to be. The liquid crystal composition expressing the blue phase is that when irradiated with light in a state in which the temperature is kept within 占 0 占 폚 with respect to a predetermined set temperature between 10 占 폚 and 70 占 폚, the liquid crystal composition exhibits a polymer-stabilized blue phase without unevenness. For example, when the set temperature is 55 ° C, the liquid crystal composition that exhibits a blue phase is a polymer-stabilized blue phase that is unevenly irradiated when light is irradiated while the temperature is maintained within the range of 54.5 ° C to 55.5 ° C , And when the set temperature is 60 占 폚, the liquid crystal composition that exhibits the blue phase exhibits a polymer-stabilized blue phase without being unevenly irradiated with light while maintaining the temperature within the range of 59.5 占 폚 to 60.5 占 폚.

The polymerizable monomer is a material for stabilizing the composition of a nematic liquid crystal composition or a liquid crystal composition which expresses a polymer-stabilized blue phase.

1 and 2, the manufacturing apparatus 1 includes a light irradiation unit 10, an irradiation box 20, a stage 30, a chamber 40, a circulating air cooling apparatus 50, , And a control means (60).

The light irradiation unit 10 emits light and includes a stage 30 facing the window member 21 that transmits light from the light irradiation unit 10 in the irradiation box 20, specifically, the irradiation box 20, It is possible to irradiate light on the panel 2 to be processed placed on the placement surface 31 of the window member 21 through the window member 21. The light irradiation unit 10 has a plurality of rod-shaped lamps 11 as a light source. The rod-shaped lamp 11 is a tubular lamp that extends in a straight line, such as a metal halide such as mercury, iron or iodine, or a metal halide lamp that mainly encloses rare gas such as argon and emits ultraviolet rays. The rod-shaped lamp 11 has a main wavelength of 300 to 400 nm and an illuminance of light (ultraviolet ray) of 365 nm in wavelength is 15 mW / cm 2 or less. The longitudinal direction of the rod-like lamp 11 is parallel to the direction from the introduction port 51 provided in the chamber 40 toward the discharge port 52, that is, the direction in which the gas as the gas flows in the chamber 40. In addition, UV-M02 (Okushisakusho Co., Ltd.) may be used as an illuminometer and UV-SN35 (Okushisakusho Co., Ltd.) may be used as a light receiver.

In the present embodiment, three rod lamps 11 are provided and arranged above the irradiation box 20, the stage 30, and the target panel 2 placed on the placement surface 31. The rod-like lamp 11 is covered with a water-cooling jacket (not shown) through which the rod lamp 11 is irradiated. The water-cooled jacket is charged with water, and circulates the charged water to maintain the rod lamp 11 at a desired operating temperature.

The irradiation box 20 is formed in a box shape and is disposed on the stage 30 so as to receive the target panel 2 placed on the placement surface 31 of the stage 30. The irradiation box 20 is provided between the light irradiation unit 10 and the placement surface 31 and has a window member 21 to which light from the light irradiation unit 10 is irradiated.

The window member 21 has a function of suppressing transmission of both ultraviolet rays and infrared rays of predetermined wavelengths. The window member 21 transmits light having a wavelength suitable for the liquid crystal layer 5 to express the polymer-stabilized blue phase, and suppresses (restricts) transmission of other light. In the present embodiment, as shown in Fig. 5, the window member 21 is constructed by overlapping the first filter 22 and the second filter 23. The first filter 22 transmits ultraviolet rays of wavelength A to B and transmits the other light (wavelength [nm] is shorter than A, wavelength [nm] is B Ultraviolet rays, visible rays, and infrared rays) that are longer than those of the light source. The second filter 23 transmits ultraviolet rays, visible light and infrared rays of wavelengths C to D and transmits the other light (particularly, the wavelength [nm] is larger than C (Limiting) the transmission of a short ultraviolet ray and a wavelength [nm] that is longer than D). Also, C is longer than A, is shorter than B, and B is shorter than D. For this reason, in the present embodiment, the window member 21 is shorter than D as shown by diagonal lines in Fig. Therefore, in the present embodiment, the window member 21 transmits ultraviolet rays of C to B wavelength (nm) and suppresses (restricts) transmission of other light as shown by diagonal lines in Fig. Further, in the present invention, the window 21 may be formed by depositing a filter that transmits ultraviolet rays of wavelengths A to B and suppresses (restricts) transmission of other light to the second filter 23 described above.

In addition, in the present invention, the window member 21 is a filter which suppresses (restricts) transmission of ultraviolet rays of a predetermined wavelength if the liquid crystal layer 5 can transmit light of a wavelength suitable for expressing the polymer-stabilized blue phase Or may be constituted by a filter for suppressing (limiting) the transmission of infrared rays of a predetermined wavelength. As described above, in the present invention, the window member 21 has a function of suppressing (limiting) transmission of ultraviolet rays or infrared rays of a predetermined wavelength by a wavelength suitable for expressing the polymer-stabilized blue phase in the liquid crystal layer 5 good.

The stage 30 is provided with a placement surface 31 on which the target panel 2 is placed and circulates water as a liquid at a predetermined temperature so that the target panel 2 placed on the placement surface 31, To control the temperature of the liquid. The placement surface 31 is provided so as to face the window member 21 and faces the light irradiation unit 10. It is preferable that the temperature at which the panel 2 to be disposed on the placement surface 31 is held is preferably constant and the temperature of the panel 2 to be placed on the placement surface 31 is constant The temperature of the liquid as the fluid circulated in the stage 30 may be slightly lower than the temperature of the target panel 2 placed on the placement surface 31 and may be slightly higher. In addition, in the present invention, the stage 30 may circulate various liquids in addition to water.

On the stage 30, the panel 2 to be processed is placed so that the color filter substrate 3 side is in contact with the arrangement surface 31. That is, the subject panel 2 is placed on the placement surface 31 of the stage 30 so that the color filter substrate 3 is brought into contact with the placement surface 31. Therefore, the light irradiation unit 10 irradiates light to the target panel 2 at the side of the counter substrate 4.

The stage 30 is formed as a thick flat plate made of an aluminum alloy and has a circulation path (not shown) in which a liquid having a temperature at which the temperature of the panel 2 to be processed reaches a desired temperature is circulated. The stage 30 is connected to a fluid warming circulation means 32 for circulating liquid as fluid in the circulation path of the stage 30 while keeping the temperature of the target panel 2 constant. The fluid warming circulation means 32 includes a pipe 33 (shown in FIG. 2) connected to a circulation path for circulating the liquid, a well-known heater, a pump for sending the liquid in the cooling device or the pipe 33 .

The chamber 40 is formed in a box shape and covers the whole of the irradiation box 2 and the stage 30 and is provided with a light irradiation part 10 on the upper part.

2, the circulation type air cooling apparatus 50 is provided with an inlet 51 and an outlet 52 provided in the chamber 40, and a gas introduced from the inlet 51 flows from the outlet 52 To control the temperature in the chamber 40. The circulation type air cooling apparatus 50 can control the temperature in the chamber 40, that is, the processing in the irradiation box 20, by discharging the gas introduced from the introduction port 51 from the discharge port 52 and controlling the temperature in the chamber 40 The temperature of the panel 2 is maintained at a constant temperature.

In the present embodiment, the inlet port 51 is open at the bottom of one end toward the length of the chamber 40, and the outlet port 52 is open at the top of the other end of the chamber 40. The circulating air cooling apparatus 50 flows the gas introduced from the inlet 51 into the chamber 40 and discharges the gas from the outlet 52. The circulation type air cooling apparatus 50 further includes a blowing pipe 51 for circulating the gas into the inlet port 51, the chamber 40, and the discharge port 52, in addition to the inlet port 51 and the outlet port 52 (See FIG. 2) 53, a well-known heater for keeping the gas at a constant temperature, a blower for blowing out the gas in the cooling device and the blowing pipe 53, and the like.

In the present invention, the temperature of the gas to be circulated in order to the inlet 51, the chamber 40 and the discharge port 52, and the temperature at which the target panel 2 to be placed on the placement surface 31 is maintained The temperature of the circulated gas may be slightly lower or slightly higher than the temperature of the panel 2 to be disposed on the placement surface 31 as long as the temperature is maintained at a desired level. In addition, the temperature of the gas is a target temperature, and may be different from the actual temperature.

The manufacturing apparatus 1 is also provided with a liquid circulating in a circulation path provided inside the stage 30, water circulated in a water-cooling jacket or the like inside or outside of the chamber 40, for example, A temperature sensor (not shown) for detecting the temperature of the gas or the like that circulates the gas. The manufacturing apparatus 1 is provided with a flow rate sensor for detecting the flow rate of the gas introduced into the irradiation box 20 from the introduction port 51 at an appropriate portion such as the vicinity of the introduction port 51, for example.

The control means (60) controls the irradiation operation of the light by the manufacturing apparatus (1). The control means 60 is connected to the fluid warming circulation means 32, the circulation type air cooling device 50, the light irradiation portion 10, and the like. The control means 60 is constituted mainly by, for example, an arithmetic processing unit composed of a CPU or the like, a microprocessor (not shown) having a ROM, a RAM and the like, and includes display means for displaying the state of the processing operation, And is connected to operating means used when registering contents information and the like.

The control means 60 controls the irradiation of the light from the light irradiating portion 10 to the target panel 2 placed on the placement surface 31 of the stage 30, Controls the water-cooling jacket covering the shape lamp 11 and keeps the rod lamp 11 at a desired operating temperature. When irradiating light from the light irradiating section 10 to the panel 2 to be processed placed on the placement surface 31 of the stage 30, The temperature of the liquid circulated in the stage 30 is kept constant by controlling the fluid warming circulating means 32 and the temperature of the gas circulated inside and outside the chamber 40 by controlling the circulating air cooling apparatus 50 And the temperature of the target panel 2 placed on the placement surface 31 of the stage 30 is kept constant.

For example, when irradiating light from the light irradiating section 10 to the panel 2 to be processed by the control means 60, the temperature of the panel 2 to be treated at the time of light irradiation is 10 ° C to 70 ° C The stage 30 and the circulation type air cooling apparatus 50 are controlled so as to be within ± 0.5 ° C with respect to a predetermined set temperature between them. That is, in the present invention, to keep the temperature of the panel 2 placed on the placement surface 31 of the stage 30 constant, it is preferable to keep the temperature of the panel 2 at a predetermined temperature between 10 ° C and 70 ° C by ± 0.5 ° C And the temperature is maintained at a temperature within the range of For example, when the set temperature is 55 캜, the control means (60) controls the fluid warming circulation means (32) so that the temperature of the panel to be treated (2) is maintained within the range of 54.5 캜 to 55.5 캜 The temperature of the circulating liquid and the temperature in the irradiation box 20 and the like are controlled. When the set temperature is 60 ° C, the temperature of the liquid circulated to the fluid circulation means 32 is controlled so that the temperature of the panel 2 to be treated is maintained at a temperature within the range of 59.5 ° C to 60.5 ° C by the control means 60 And the flow rate, temperature, etc. of the gas introduced into the irradiation box 20 are controlled.

Next, a method for manufacturing a liquid crystal panel using the manufacturing apparatus 1 according to the embodiment of the above-described configuration, that is, a method for irradiating light to the target panel 2 will be described. First, the operator registers the processing content information in the control means 60 and starts the processing operation when there is an instruction to start the processing operation. Then, the target panel 2 is placed on the placement surface 31 of the stage 30 in the processing operation. The control means 60 causes the liquid to flow through the stage 30 and also introduces the gas into the chamber 40 through the inlet port 51 and discharges the gas from the outlet port 52 and circulates water in the water- . The control means 60 irradiates light from the light irradiation unit 10 through the window member 21 to the target panel 2 placed on the placement surface 31 for a predetermined period of time. The subject panel 2 to which the light is irradiated is removed from the stage 30 for a predetermined period of time and the panel 2 to be treated in the light source is placed on the placing surface 31 of the stage 30. The light is irradiated in the same manner as the above-described process.

According to the manufacturing apparatus 1 and the method of manufacturing a liquid crystal panel according to the embodiment of the above-described configuration, in addition to being controlled so as to circulate the liquid in the stage 30 and maintain the temperature of the panel 2 at a constant temperature, Thereby keeping the gas in the chamber 40 covering the irradiation box 20 accommodating the target panel 2 constant. According to the control device 1 and the method of manufacturing the liquid crystal panel, the temperature inside the irradiation box 20 accommodating the target panel 2 and the outside of the irradiation box 20, i.e., inside the chamber 40, The temperature of the irradiation box 20 can be suppressed from dissipating heat from the irradiation box 20, so that the temperature change in the irradiation box 20 can be suppressed. Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, a change in the temperature of the panel 2 in the irradiation box 20 can be suppressed. According to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, the temperature of the panel 2 to be disposed on the placement surface 31 can be kept constant by the liquid in the stage 30. [ Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, a change in the temperature of the panel 2 in the irradiation box 20 can be suppressed.

Further, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, the window member 21 transmits the light of the wavelength suitable for expressing the polymer stabilized blue phase and restricts the transmission of the other light , And only the light necessary for minimizing the appearance of the polymer-stabilized blue phase is irradiated to the panel 2 to be treated. Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, even if light is irradiated from the light irradiation section 10 to the target panel 2 placed on the placement surface 31, Can be suppressed from being irradiated with undesired light. Particularly, it is possible to suppress the irradiation of undesired light such as infrared rays, which cause a temperature change, to the panel 2 to be treated. Therefore, it is possible to suppress the temperature of the target panel 2 placed on the placement surface 31 from rising. Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, the temperature change of the panel 2 in the irradiation box 20 can be suppressed more reliably.

According to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, the gas is introduced into the chamber 40 covering the irradiation box 2. Therefore, the gas temperature in the chamber 40 and the temperature in the irradiation box 20 can be kept substantially equal. Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, the unevenness of the temperature of the panel 2 to be processed can be suppressed.

According to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, a gas of a constant temperature is introduced into the chamber 40 covering the irradiation box 20. Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, the temperature of the panel 2 to be treated at the time of irradiation of light is reduced to, for example, 50 占 폚 or 60 占 폚, It is possible to suppress the temperature change of the panel 2 due to the heat radiation of the panel 2 to be processed provided in the irradiation box 20 due to the temperature difference with the outside of the manufacturing apparatus 1 even if the temperature difference of the outside air of the panel 2 is large.

Therefore, according to the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel, it is possible to suppress the temperature unevenness of the panel 2 to be disposed on the placement surface 31, Can be suppressed.

According to the manufacturing apparatus 1, the panel 2 to be processed is placed on the stage 30 so that the color filter substrate 3 is brought into contact with the arrangement surface 31 and the light irradiation unit 10 is arranged on the opposing substrate 4). Further, according to the production apparatus 1, the liquid crystal layer 5 includes a liquid crystal composition which expresses a polymer-stabilized blue phase. The light irradiation unit 10 is provided with a rod-shaped lamp 11 having a main wavelength of 300 to 400 nm and a light irradiation of 365 nm in wavelength of 15 mW / cm 2 or less. The temperature of the liquid to be treated and the temperature of the liquid to be treated in the panel 2 when the light is irradiated on the panel 2 to be treated is within ± 0.5 ° C. with respect to the set temperature between 10 ° C. and 70 ° C. And controls the gas introduced into the irradiation box 20. Therefore, according to the manufacturing apparatus 1, light can be made to act on the liquid crystal layer 5 to reliably express the polymer-stabilized blue phase.

According to the manufacturing apparatus 1, since the introduction port 51 is provided in the lower portion of the chamber 40 and the discharge port 52 is provided in the upper portion of the chamber 40, The gas is hardly brought into direct contact with the irradiation box 20 and the temperature change of the gas in the irradiation box 20 can be suppressed. Therefore, it is possible to further suppress the change of the gas temperature in the irradiation box 20 as compared with the manufacturing apparatus 1.

Next, the effects of the manufacturing apparatus 1 and the manufacturing method of the liquid crystal panel according to the above-described embodiment were confirmed. The results are shown in Table 1. Table 1 shows the results of the temperature changes of Comparative Examples and Inventive Products 1 and 2.

The case shown in Table 1 is a case where the measurement is performed on the surface of the to-be-processed panel 2 when light is irradiated from the light irradiation unit 10 to the target panel 2 disposed on the placement surface 31 The temperature changes of the parts (A to I) were measured.

The measurement portions A to I show the detection results of the temperature sensors provided in the portion shown in Fig. Fig. 6 is a plan view showing a comparative example and measurement portions of temperature changes of Inventive Products 1 and 2. Fig. 6, the temperature sensor showing the detection results of A to I is provided on the target panel 2 (i.e., the placement surface 31) when viewed in plan from the manufacturing apparatus 1 as shown in Fig. A indicates the detection result of the temperature sensor provided at one corner near the inlet 51 and B indicates the detection result of the temperature sensor provided immediately below one end of the rod lamp 11 near the inlet 51 And C indicates the detection result of the temperature sensor provided at the other corner near the introduction port 51. As shown in Fig. D is the detection result of the temperature sensor provided at one end in the width direction of the central portion in the longitudinal direction of the placement surface 31 and E is the central portion in the longitudinal direction of the placement surface 31, F indicates the detection result of the temperature sensor provided at the other end in the width direction of the center portion in the longitudinal direction of the placement surface 31 and H indicates the detection result of the temperature sensor provided at the discharge port 52 , And I indicates the detection result of the temperature sensor provided at the other corner near the discharge port 52 .

In the inventive product (1) in Table 1, the set temperature of the stage 30 is set to 55 캜, and the temperature of the gas circulated in the chamber 40 by the circulating air cooling device 50 is 55 캜. In the present invention (2) in Table 1, the set temperature of the stage 30 is set to 60 캜, and the temperature of the gas circulated in the chamber 40 by the circulating air cooling apparatus 50 is set to 60 캜. In the comparative example of Table 1, the set temperature of the stage 3 is 60 占 폚, and the circulation of the gas by the circulating air cooling apparatus 50 is stopped. Further, in the measurement, the temperature changes of each of the measurement portions A to I were measured from the start of measurement to after 1200 seconds. In Table 1, & cir & indicates that the panel 2 to be treated can be maintained at a constant temperature so as to stably express the polymer-stabilized blue phase, and X indicates that the panel 2 to be treated is stably expressed, Can not be maintained at a constant temperature.

Condition maximum at least Average Judgment Inventive product 1 55.2 54.5 54.91 ○ Inventive product 2 60.2 59.5 60.06 ○ Comparative Example 60.8 59.0 60.06 ×

According to the comparative example in Table 1, even if only the stage 30 controlled to keep the target panel 2 placed on the placement surface 31 at a constant temperature is used, The temperature of the measurement part E and the temperature of the measurement part H sometimes exceed 60.5 DEG C. In some cases, In the comparative example, the lowest temperature in the measuring portion A, the measuring portion G and the measuring portion I is 59.0 占 폚, and the highest temperature in the measuring portion E and the measuring portion H is 60.8 占 폚. As a result, according to the comparative example, when the light is irradiated, the temperature of the panel 2 on the placement surface 31 rises, and the gas in the chamber 40 is not circulated. Therefore, according to the comparative example, it is clear that the unevenness of the temperature of the panel 2 to be treated can not be suppressed and the change in the temperature of the panel 2 to be treated can not be suppressed so as to stably express the polymer-stabilized blue phase .

According to Inventive Products 1 and 2 of Table 1, by using the stage 30 and the circulation type air cooling device 50, which are controlled so as to keep the target panel 2 placed on the placement surface 31 at a constant temperature, The temperature of the whole of the measurement part A to the measurement part I is in the range of 54.5 DEG C to 55.5 DEG C or 59.5 DEG C to 60.5 DEG C. [ Therefore, according to the first and second embodiments of the present invention, temperature unevenness of the panel 2 to be treated can be suppressed so as to stably express the polymer-stabilized blue phase, and the temperature change of the panel 2 to be treated can be suppressed It became clear that it can be done.

(Modified example)

7 is a cross-sectional view showing a schematic configuration of a manufacturing apparatus of a liquid crystal panel according to a modified example of the embodiment, and the same reference numerals are given to the same components as those in the above-described embodiment, and a description thereof is omitted. 7, the introduction port 51 may be opened at the upper portion of the other end in the longitudinal direction of the chamber 40, and the discharge port 52 may be opened at the lower portion of one end of the chamber 40 . 7, since the gas is introduced from the upper part of the chamber 40, the gas can be directly contacted to the irradiation box 20, or the temperature of the gas in the irradiation box 2 can be set to a desired condition more quickly.

8 is a cross-sectional view showing a schematic configuration of an apparatus for manufacturing a liquid crystal panel according to another modification of the embodiment, and the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted. A plurality of openings 51 may be opened in the lower portion of the chamber 40 and a plurality of openings 52 may be formed in the upper portion of the chamber 40 as shown in Fig. 8, since the gas is introduced into the chamber 40 from the plurality of introduction ports 51, the temperature of the gas in the irradiation box 20 can be set to a desired condition more quickly.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the present invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions and alterations can be made without departing from the gist of the invention. These embodiments and their modifications fall within the scope and spirit of the invention and are included in the scope of the invention as defined in the claims and their equivalents.

1: Manufacturing apparatus of liquid crystal panel 2:
3: color filter substrate 4: opposing substrate
5: liquid crystal layer 10:
11: rod shape lamp (light source) 20: irradiation box
21: window 30: stage
31: placement surface 40: chamber
50: circulation type air cooling apparatus 51: inlet
52: Outlet

Claims (7)

A light irradiating portion for emitting light;
An irradiation box having a window material that transmits light from the light irradiation portion;
A stage which is provided so as to face the window member and on which a panel to be processed is placed and on which a liquid for controlling the temperature is circulated in the region where the light is irradiated on the placement surface;
A chamber covering the irradiation box and the stage; And
And a circulation type air cooling apparatus having an inlet and an outlet provided in the chamber, and a gas introduced from the inlet is discharged from the outlet, and the temperature in the chamber is controlled. The method according to claim 1,
Wherein the window material has a function of suppressing transmission of ultraviolet rays or infrared rays of a predetermined wavelength or suppressing transmission of both ultraviolet rays and infrared rays of a predetermined wavelength. 3. The method according to claim 1 or 2,
Wherein the panel to be processed has a color filter substrate, a counter substrate facing the color filter substrate, and a liquid crystal layer provided between the color filter substrate and the counter substrate,
Wherein the panel to be processed is disposed on the stage so that the color filter substrate side is in contact with the placement surface and the light irradiation unit irradiates the light to the target panel on the side of the counter substrate. The method of claim 3,
Wherein the liquid crystal layer contains at least a nematic liquid crystal composition, a liquid crystal composition that displays a blue phase, and a polymerizable monomer, and emits a polymer-stabilized blue phase upon irradiation of the light. 3. The method according to claim 1 or 2,
Wherein the light irradiating unit has a main wavelength of 300 nm to 400 nm and a light source having a light wavelength of 365 nm at the arrangement surface of 15 mW / cm 2 or less. 3. The method according to claim 1 or 2,
Wherein the stage and the circulating air cooling apparatus are controlled such that the temperature of the panel to be treated when the light is irradiated onto the panel to be processed is within ± 0.5 ° C with respect to a set temperature between 10 ° C and 70 ° C, Apparatus for manufacturing panels. A light irradiating portion for emitting light;
An irradiation box having a window material that transmits light from the light irradiation portion;
A stage arranged to face the window member and having a placement surface on which a panel to be processed is placed, and a liquid for controlling the temperature of an area of the placement surface to which the light is irradiated,
A chamber covering the irradiation box and the stage; And
And a circulation type air cooling apparatus having an inlet and an outlet provided in the chamber, and a gas introduced from the inlet is discharged from the outlet to control the temperature in the chamber,
Placing the target panel on the placement surface of the stage;
Wherein the liquid is circulated in the stage and the gas is introduced into the chamber from the introduction port and circulated from the outlet so as to irradiate light from the light irradiation section to the panel to be processed disposed on the arrangement surface through the window, The method comprising the steps of:

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