JPH0540270A - Production of liquid crystal panel - Google Patents

Abstract

PURPOSE:To enhance the uniformity of liquid crystal layer thicknesses by injecting a liquid crystal material of the amt. larger than the required amt. into the liquid crystal panel, then pressurizing the liquid crystal panel with a uniform pressure from both sides to extrude the excess liquid crystal material and sealing the port. CONSTITUTION:The liquid crystal panel 2 is pressurized from both sides of the panel by two pressurizing parts 3A, 3B. The upper pressurizing part 3A and the lower pressurizing part 3B are elastic materials internally sealed with gas and can, therefore, pressurize the liquid crystal panel uniformly from both sides. The liquid crystal panel having the uniform liquid crystal layer thickness is produced. Many sheets of the liquid crystal panels are simultaneously produced with specified quality by alternately disposing and pressurizing the liquid crystal panels 2 and the pressurizing parts 3.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As a method of making the thickness of a liquid crystal layer of a liquid crystal panel uniform, after injecting a larger amount of liquid crystal into the liquid crystal panel than necessary, the liquid crystal panel is pressurized to push out excess liquid crystal, and then poured. The method of sealing the entrance is effective. Conventionally, the pressure applied at this time is 20 to 30 m as shown in (FIG. 4).
This is performed by adjusting the internal pressure of the pressurizing unit 3 in which a gas such as air or nitrogen is sealed from the upper surface of the liquid crystal panel 2 installed on the fixed base 1 of m.

[0003]

When the conventional pressing method is used, the pressure applied to the fixed base 1 is performed only from the liquid crystal panel 2 side of the fixed base 1, so that the fixed base 1 as shown in FIG. There is a problem in that the liquid crystal panel cannot be uniformly pressed due to distortion, and as a result, the uniformity of the liquid crystal layer thickness decreases.

In order to solve the above-mentioned problems, it is sufficient to avoid the distortion of the fixed base 1. For that purpose, it is necessary to design the fixing base 1 with a material having high rigidity and to increase the wall thickness 1a, and as a result, there is a problem that the entire apparatus becomes large. It is an object of the present invention to manufacture a liquid crystal panel having a uniform liquid crystal layer thickness with a compact pressure device using a fixing base that has no or a small thickness.

[0005]

In order to solve the above problems, a method of manufacturing a liquid crystal panel according to the present invention is characterized in that pressure parts are provided on both sides of the liquid crystal panel or on both sides of a fixed base on which the liquid crystal panel is installed. The same amount of pressure is applied simultaneously from both sides of the liquid crystal panel and the fixed base.

[0006]

When the liquid crystal panel is pressed by the above method, the liquid crystal panel and the fixing base are uniformly pressed from both sides, so that no distortion occurs. Furthermore, a large number of pressure parts and liquid crystal panels or fixed bases on which liquid crystal panels are installed are arranged alternately, and the same amount of pressure is applied to all liquid crystal panels from both sides, making the device compact. And moreover,
A large number of liquid crystal panels can be manufactured at the same time.

[0007]

EXAMPLES Examples of the present invention (FIG. 1)-
This will be described with reference to FIG.

FIG. 1 shows two pressurizing parts 3A and 3B,
It is a figure which shows the state which pressurizes the liquid crystal panel 2 from both sides.
Since the upper pressurizing unit 3A and the lower pressurizing unit 3B are elastic bodies in which gas is enclosed, the liquid crystal panel can be uniformly pressed from both sides, and a liquid crystal panel having a uniform liquid crystal layer thickness can be manufactured. You can

In FIG. 2, the liquid crystal panel 2 is installed on a fixed base 1 made of aluminum having a thickness of 5 mm, and the pressure is adjusted to the same magnitude from both sides of the upper pressurizing unit 3A and the lower pressurizing unit. The state in which pressure is applied by the portion 3B is shown. Since the fixed base 1 receives the same pressure from above and below, no distortion occurs. Therefore, even if the thickness of the fixed base 1 is as thin as 5 mm, uniform pressure can be applied to the surface of the liquid crystal panel.

Further, (FIG. 3), by alternately arranging the fixed base 1, the liquid crystal panel 2 and the pressure applying parts 3, all the pressure applying parts 3 have the upper pressurizing parts 3A (FIG. 1). The case where both functions of the lower pressurizing unit 3B are provided is shown. In the apparatus shown in (FIG. 3), five liquid crystal panels 2 can be manufactured uniformly at the same time. Further, by arranging a large number of fixed first liquid crystal panels 2 and pressing parts 3, Many liquid crystal panels can be manufactured uniformly at the same time.

[0011]

As described above, according to the present invention, it is possible to reduce the size and weight of the pressurizing device and to stack a number of liquid crystal panels so that a large number of liquid crystal panels can be simultaneously manufactured with a constant quality.

[Brief description of drawings]

FIG. 1 is a front view of a pressure device showing a liquid crystal extrusion method according to an embodiment of the present invention.

FIG. 2 is a front view of a pressure device showing a liquid crystal extrusion method according to another embodiment of the present invention.

FIG. 3 is a front view of a pressure device showing a liquid crystal extrusion method according to another embodiment of the present invention.

FIG. 4 is a front view of a pressure device showing a conventional liquid crystal pushing method.

FIG. 5 is a front view of a pressure device showing a case where a fixed base is distorted by a conventional liquid crystal pushing method.

[Explanation of symbols]

 1 Liquid crystal panel fixing base 2 Liquid crystal panel 3 Liquid crystal panel pressing means 3A Upper pressing means 3B Lower pressing means

Claims (3)

[Claims] 1. A liquid crystal panel is filled with a larger amount of liquid crystal than necessary, and then a pressurizing section composed of a hollow elastic body having a function of adjusting the internal pressure is applied with the same pressure from both sides of the liquid crystal panel. A method for manufacturing a liquid crystal panel, characterized in that a surplus liquid crystal is pushed out and then sealed. 2. A fixing base for installing a liquid crystal panel is provided between the two pressing units, and the fixing base and the liquid crystal panel installed on the fixing base are simultaneously operated by the two pressing units. The method of manufacturing a liquid crystal panel according to claim 1, wherein pressure is applied. 3. The liquid crystal panel according to claim 1, wherein a large number of liquid crystal panels are simultaneously pressed by alternately arranging the pressure unit and the liquid crystal panel provided on the fixed base. Manufacturing method.