JPH0764102A - Injecting device for liquid crystal and organic electrochromic solution - Google Patents

Abstract

PURPOSE:To enhance the efficiency of utilizing a soln. put in a soln. tray. CONSTITUTION:The soln. tray 15 is formed to a rectangular plane shape having long side parts 20a set longer than the thickness of an injection port and shorter than the length of a cell and short side parts 20b broader than the thickness of the cell. Further, the thicknesses at the edges 20 and side parts 21 of the soln. tray 15 are set at the thicknesses decreasing gradually toward end edges 23. As a result, the soln. sticking to the cell at the time of injection is limited to the circumference (neighborhood) of the injection port. The edges 20, 21 of the soln. tray 15 are deformed when the soln. tray 15 comes into contact with the injection port, by which the injection port is made to arrive at the bottom of the soln. tray 15 and nearly all the soln. in the soln. tray 15 is injected into the cell.

Description

Detailed Description of the Invention

[0001]

[Industrial applications]

2. Description of the Related Art Generally, liquid crystal or organic electrochromic solution (hereinafter simply referred to as "solution") is injected by the following method. That is, the cell is placed in a vacuum chamber and the inside of the vacuum chamber is evacuated to bring the cell into a vacuum state. afterwards,
The injection port provided in the cell is immersed in the solution in the solution dish, and the pressure in the vacuum chamber is returned to atmospheric pressure while maintaining this state. As a result, only the inside of the cell is in a vacuum state, and the solution is injected into the cell by the atmospheric pressure.

Various proposals have hitherto been made regarding a method of immersing a solution in an inlet. For example, JP-A-4-
172324 discloses a method in which a liquid crystal tank connected to a liquid crystal dish in a siphon form is lifted to adjust the height of the liquid crystal surface, and the liquid crystal is dipped in the inlet. In addition, JP-A-4
-368824 discloses a method of mechanically lifting a container containing liquid crystal to immerse the liquid crystal in the injection port, or raising the bottom of the container supported by the bellows to immerse the liquid crystal in the injection port. Has been done. Further fairness 3-
63049, Japanese Patent Publication 4-63375 and Japanese Patent Publication 4-63
In 376, a method is disclosed in which a fibrous material or the like is brought into contact with the injection port, and liquid crystal is sucked up and injected by utilizing the capillary phenomenon of the fibrous material.

[0003]

However, the methods disclosed in the above documents have the following problems.

That is, in Japanese Patent Laid-Open No. 4-172324 and Japanese Patent Publication No. 3-63049, the height of the liquid crystal is adjusted, which is an effective injection method. There is.

Further, in Japanese Patent Publication No. 4-46375 and Japanese Patent Publication No. 4-63376, there is a problem that defective injection occurs.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above problems and provide a liquid crystal and organic electrochromic solution injecting device which enables good injection without increasing the size of the device.

[0007]

In order to achieve the above object, a liquid crystal or organic electrochromic solution (solution)
In a pouring device comprising a driving device for vertically moving the solution dish containing the liquid to immerse the solution in the solution dish into the inlet of the cell, and injecting the solution into the cell, the solution dish is the pouring device. Longer than the inlet, and having a substantially rectangular planar shape with a long side set shorter than the length of the cell and a short side wider than the thickness of the cell, and the thickness of the edge of the solution dish. However, when the solution tray is gradually thinned toward the edge, and the solution tray is raised by the drive device and comes into contact with the inlet, the edge of the solution tray is deformed and the inlet is closed. Reaches the bottom of the solution dish and injects the solution into the cell.

The solution dish has water repellency.

Further, the solution dish is made of fluororesin.

[0010]

According to the above construction, the shape of the solution dish is set to be a substantially rectangular shape slightly larger than the injection port, and the edge of the solution dish is gradually thinned toward the edge portion so that the cell is not filled during the injection. Makes the solution dish easily deformable even if it comes into contact with the solution dish.
This allows the injection port of the cell to reach the bottom of the solution dish so that almost all of the solution can be injected and the solution does not adhere to parts other than the injection port.

Further, as a material for the solution dish, a fluororesin having water repellency is used, and when the solution is placed in the solution dish, many solutions are placed in a small solution dish so that the solution becomes heap-shaped. And the solution remaining in the solution dish is reduced.

[0012]

Embodiments of the present invention will be described with reference to the drawings. Figure 1
FIG. 1 is a side view showing an appearance of a liquid crystal and organic electrochromic solution (solution) injection device 10 according to the present invention.

The injection device 10 includes a vacuum chamber 11 and a vacuum chamber 11.
The support housing 18 has an exhaust port 12 for evacuating the inside and a leak port 14 for making the pressure of the vacuum chamber 11 atmospheric pressure. Inside the vacuum chamber 11, the cell 1
A cell support 17 on which the cells 6 are mounted is provided, and a solution tray 15 containing the solution S and a drive unit 13 for moving the solution tray 15 up and down are provided below the cell support 17 via a shaft 13a.

FIG. 2 is a partial front view showing the situation when the solution S is injected into the cell 16, and FIG. 3 is a detailed view of the solution dish 15. The cell 16 has a frame portion 16a, an injection region 16b into which the solution is injected, and a solution injection port 16c.

Further, FIG. 3 (a) is a top view of the solution dish 15, and a sectional view taken along line II and a sectional view taken along line II-II in FIG. 3 are shown in FIGS. 3 (b) and 3 (c), respectively. Shows. As can be seen from these figures, the solution dish 15 has an edge portion 20 (edge), a side portion 21 (edge), and a support portion 22, and also has a long side portion 2.
0a is set to be shorter than the cell 16 and longer than the injection port 16c, and the short side portion 20b has a substantially rectangular planar shape that is set wider than the thickness of the cell. Of course, when the solution is injected into a plurality of cells at the same time, the width of the short side portion 20b is appropriately adapted as shown in FIG.

The wall thickness of the solution dish 15 is constructed so that it gradually becomes thinner toward the edge portion 23.

Based on the above configuration, a detailed explanation of the method of injecting the solution S and the injecting apparatus will be given with reference to FIG. Solution S
The solution dish 15 in which is put is opposed to the inlet 16c of the cell 16, and the vacuum chamber 11 is evacuated from the exhaust port 12. When the vacuum degree of the vacuum chamber 11 reaches a predetermined vacuum degree, the driving device 13 is activated to move the shaft 13a up and down to immerse the solution S in the solution dish 15 into the inlet 16c. After that, the pressure in the vacuum chamber 11 is gradually returned to atmospheric pressure through the leak port 14,
The solution S is injected into the injection region 16b via the injection port 16c.

As the solution injection proceeds, the solution dish 1
The amount of the solution S of 5 becomes small. Therefore, the shaft 13a is moved up and down in synchronization with the injection state so that the solution S in the solution dish 15 is constantly immersed in the injection port 16c. In this case, when the solution S surface of the solution dish 15 reaches the edge portion 23 (see FIG. 3), the cell 16 comes into contact with the solution dish 15.

However, since the solution tray 15 is constructed so that it gradually becomes thinner toward the edge portion 23, the edge portion 20 and the side portion 21 of the solution tray 15 are easily deformed even if they come into contact with the cell 16. Therefore, it is possible to bring the inlet 16c close to the bottom of the solution dish 15, and it is possible to reduce the remaining amount of the solution S put in the solution dish 15.

It should be noted that the solution dish 15 is preferably made of a material such as a fluororesin having water repellency with respect to the solution S (a material that repels the solution or a material having poor wettability). Because
By using such a material, the solution S becomes heap-shaped as shown in FIG.
This is because not only is it put in, but less is left on the bottom. In addition, even if it abuts on the cell 16, there is an advantage that it is easily elastically deformed.

[0021]

[Effect] As described above, a solution dish having a length longer than the injection port and sufficiently smaller than the length of the cell is used, and the thickness of the solution dish is gradually reduced toward the edge. By doing so, the solution adhering to the cell can be limited to substantially the vicinity of the injection port, and when the cell and the solution dish come into contact with each other, the solution dish is easily deformed so that it is at the bottom of the solution dish. It is possible to inject even a solution, and it is possible to inject a solution without waste.

[0022]

[Brief description of drawings]

FIG. 1 is a side view of an injection device applied to an embodiment of the present invention.

FIG. 2 is a front view showing a positional relationship between a cell and a solution dish in FIG.

FIG. 3 is a view of the solution dish in FIG. 1, (a) is a top view,
(b) is a sectional view taken along the line I-I of (a), and (c) is a sectional view taken along the line II-II of (a).

FIG. 4 is an explanatory view illustrating an injection procedure according to the present invention.

[Explanation of symbols]

 10 injection device 13 drive device 15 solution dish 16 cell 16c injection port 20 edge (edge) of solution dish 20a long side 20b short side 21 solution dish side (edge) 23 edge of solution dish S liquid crystal or Organic electrochromic solution (solution)

Claims (3)

[Claims] 1. A driving device for moving a solution dish containing a liquid crystal or organic electrochromic solution (solution) up and down to immerse the solution in the solution dish into an inlet of a cell,
In an injection device that injects the solution into the cell, the solution dish is longer than the injection port, and a long side portion that is set shorter than the length of the cell, and a short side portion that is wider than the thickness of the cell. While having a substantially rectangular planar shape with and, the thickness of the edge of the solution tray is gradually thinned toward the edge, the solution tray is raised by the drive device, the injection port The liquid crystal and organic electro-luminescent device, characterized in that the edge of the solution dish is deformed when it comes into contact with and the injection port reaches the bottom of the solution dish and injects the solution into the cell. Chromic solution injection device. 2. The liquid crystal and organic electrochromic solution injection device according to claim 1, wherein the solution dish has water repellency. 3. The liquid crystal and organic electrochromic solution injection device according to claim 1, wherein the solution dish is made of a fluororesin.