JPH06123890A - Manufacture of liquid crystal plate - Google Patents

Abstract

PURPOSE:To prevent liquid crystal from entering an internal space other than a specific sealed area by closing the part other than sealing openings with a seal material so that the liquid crystal does not enter the area other than the area where the liquid crystal is sealed, by capillarity. CONSTITUTION:The injection openings 3a and 4a of liquid crystal 5 are formed in liquid crystal sealed areas 3 and 4, respecctively by partially cutting the seal material 2. The extension part 2a of the seal material 2 is formed like a barricade following those injection openings 3a and 4a, and this extension part 2a prevents the liquid crystal 5 from entering the internal space except the liquid crystal charged areas 3 and 4. This liquid crystal plate 7 is dipped in the liquid crystal 5 with the injection openings 3a and 4a sides down as usual and the liquid crystal 5 is injected into the liquid crystal sealed areas 3 and 4 with a vacuum injecting device. At this time, the plate is sealed except at the injection openings 3a and 4a with the extension part 2a of the seal material 2, so the liquid crystal never enters the internal space other than the liquid crystal charged areas 3 and 4 unlike before.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal plate manufacturing method.

[0002]

2. Description of the Related Art Generally, in order to manufacture a liquid crystal plate, a region for enclosing a liquid crystal is divided and formed by two glass plates and a sealing material attached to an end portion between the glass plates. After the liquid crystal has been injected through the sealing port provided in a key place, the sealing port is closed.

[0003]

In this case, in order to normally take a plurality of sheets, a large glass plate is used to form a plurality (two in the illustrated example) of liquid crystal enclosed areas a and b as shown in FIG. The liquid crystal e is inserted into the liquid crystal e with the side of the injection port d provided in the sealing material c facing downward, and the liquid crystal e is injected into the liquid crystal enclosing regions a and b by a vacuum injection device (not shown). As a result, the liquid crystal e is also stored in the internal space f, etc. other than the liquid crystal enclosure areas a and b
Will infiltrate. Therefore, conventionally, after closing the injection port d, it is necessary to wash and remove the extra liquid crystal that has penetrated into the internal space, and the number of washing steps is increased, which is not preferable in manufacturing and expensive liquid crystal is wasted. . The present invention has been made to solve such conventional problems, and provides a liquid crystal plate manufacturing method capable of preventing liquid crystal from entering an internal space other than a predetermined sealed area when liquid crystal is sealed. Is the subject.

[0004]

As a means for technically solving the above-mentioned problems, the present invention manufactures a liquid crystal plate by enclosing a liquid crystal in a region defined by two glass plates and a sealing material. In the method described above, the gist is that the portion other than the sealing port is closed by a sealing material so that the liquid crystal does not enter the area other than the area where the liquid crystal should be sealed due to the capillary phenomenon.

[0005]

[Operation] Since the portion other than the filling port is closed by the sealing material, it acts as a so-called barricade, and it is possible to prevent the liquid crystal from entering into the area other than the predetermined liquid crystal filling area due to the capillary phenomenon when the liquid crystal is filled.

[0006]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In FIG. 1, 1 is a glass plate,
Two liquid crystal enclosure regions 3 and 4 are formed by providing the sealing material 2 facing each other vertically and maintaining a predetermined interval.

Liquid crystal injection ports 3a and 4a are formed in the liquid crystal enclosing regions 3 and 4 by cutting out a part of the sealing material 2, and the sealing material 2 is extended following these injection ports 3a and 4a. The portion 2a is formed like a barricade, and the extension portion 2a prevents liquid crystal from entering the inner space other than the liquid crystal enclosing regions 3 and 4.

The liquid crystal plate 7 according to the present invention configured as described above is inserted into the liquid crystal liquid with the inlets 3a, 4a side down, as in the conventional case, and then the liquid crystal plate 7 is inserted by a vacuum injecting device (not shown). When the liquid crystal 5 is injected into the liquid crystal enclosing regions 3 and 4, the extension 2a of the sealing material 2 closes parts other than the injection ports 3a and 4a. Liquid crystals do not enter due to capillary action.

After injecting the liquid crystal 5 in this way, if the injection ports 3a and 4a are sealed and the liquid crystal plate is cut along the cutting line 6, the extended portion 2a of the sealing member 2 is removed. Does not interfere with the process. Therefore,
A washing process after liquid crystal injection is not necessary, and a large amount of expensive liquid crystal is not wasted.

After that, if the cutting liquid 8 is supplied between the liquid crystal enclosed regions 3 and 4 of the liquid crystal plate 7 as shown in FIG. it can.

FIG. 4 shows another embodiment of the present invention in which two upper and lower glass plates 11 and a sealing material 12 form two liquid crystal enclosing regions 13 and 14, and these liquid crystal enclosing regions 13 are formed. , 14 are provided with injection ports 13a, 14a, respectively.

Also in this case, the extension 12 is formed on the seal member 12.
Although a is provided to form a barricade, unlike the above-described embodiment, the extended portion 12a is provided between the adjacent liquid crystal enclosing regions 13 and 14 and both ends of the liquid crystal enclosing regions 13 and 14 in a closed state.

In the liquid crystal plate 17 thus formed, when the liquid crystal 15 is injected with the injection ports 13a and 14a facing downward,
The liquid crystal does not enter only the liquid crystal enclosing regions 13 and 14 and does not enter the other internal spaces. This is because the extension 12a of the seal member 12 acts as a barricade to prevent liquid crystal from entering.

After injecting the liquid crystal 15 in this way, if the injection ports 13a and 14a are sealed and the liquid crystal plate is cut along the cutting line 16, the extension 12a of the sealing member 12 is removed. Does not interfere with the process. Therefore, the cleaning process after the liquid crystal injection is unnecessary, and the waste of expensive liquid crystal can be prevented as much as possible.

Further, similarly to the above-mentioned embodiment, the liquid crystal can be divided into two liquid crystal plates by cutting the liquid crystal between the liquid crystal enclosed regions 13 and 14 of the liquid crystal plate 17 with a rotating blade while supplying the cutting liquid.

It should be noted that in the above-mentioned embodiments, two sheets were taken in each case, but the present invention is not limited to this, and it is also possible to take an arbitrary plural sheets of three or more.

[0017]

As described above, according to the present invention,
In a method of manufacturing a liquid crystal plate by enclosing liquid crystal in a region partitioned by two glass plates and a sealing material, a portion other than the encapsulation port of the liquid crystal enclosing area is closed by the sealing material, so that a predetermined amount is filled at the time of injecting the liquid crystal. The liquid crystal can be prevented from entering into the area other than the liquid crystal sealed area due to the capillary phenomenon, and the cleaning step after the liquid crystal injection is not required, and the waste of expensive liquid crystal can be prevented as much as possible.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory diagram showing a state in which the liquid crystal is sealed and then divided into individual liquid crystal plates by a rotating blade.

FIG. 4 is an explanatory diagram showing another embodiment of the present invention.

FIG. 5 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 ... Glass plate 2 ... Seal material 2a ... Extension
3, 4 ... Liquid crystal enclosed area 3a, 4a ... Injecting port 5 ... Liquid crystal 6 ... Cutting line 7
... Liquid crystal plate 8 ... Cutting liquid 9 ... Rotating blade 11 ... Glass plate 12 ... Sealing material 13, 14 ... Liquid crystal enclosing region 13a, 14a ... Injection port 15 ... Liquid crystal 16 ... Cutting line 17 ... Liquid crystal plate

Claims (1)

[Claims] 1. A method of manufacturing a liquid crystal plate by encapsulating liquid crystal in a region defined by two glass plates and a sealing material, wherein the liquid crystal intrudes into a region other than the region where the liquid crystal should be enclosed by a capillary phenomenon. A method for manufacturing a liquid crystal plate, characterized in that a portion other than the sealing port is closed by a sealing material so as not to do so.