JPH10197881A - Liquid crystal panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the injecting time of liquid crystal in a large-sized panel and to improve workability by providing a liquid crystal injection port at a part other than the peripheral part of either substrate in a liquid crystal panel obtained by sticking a pair of substrates with a transference electrode through seal material and enclosing the liquid crystal therein. SOLUTION: After forming the liquid crystal injection port 7 at the part avoiding a picture element electrode and a driving electrode line at the liquid crystal panel display part of one substrate 4 of a pair of substrates 4 with a transference electrode, the seal material 5 is printed on the periphery of the substrate 4, and another substrate 4 is stuck thereto. The liquid crystal is enclosed in space surrounded by the seal material 5 and two substrates 4 from the injection port 7 so as to form a liquid crystal layer 6. Thus, the liquid crystal is injected from the center part of the large-sized panel and the injecting time is shortened. Meanwhile, in the large-sized panel, the interval of one picture element is several millimeters, so that a hole is made inconspicuous without lowering display quality even when the injection port 7 is formed on the liquid crystal panel display part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid crystal panel.

[0002]

2. Description of the Related Art With the development of liquid crystal displays having characteristics such as low power consumption, thinness, and light weight, the realization of wall-mounted televisions and the like has become imminent. At the same time, a tendency to increase in size has become apparent.
A liquid crystal panel used in a conventional liquid crystal display has a structure as shown in FIG. In the figure, 1 is a substrate with a transparent electrode, 2 is a sealing material, and 3 is a liquid crystal injection port. Liquid crystal is sealed between the substrates 1 with the transparent electrodes. The thickness of the liquid crystal layer shown in the figure is generally 10 microns or less. The size (outer shape) of the liquid crystal panel is at most about 30 cm diagonally. Note that the figure shows a state in which a part of the substrate with a transparent electrode is cut away for explanation.

[0003]

However, such a conventional liquid crystal panel has a disadvantage that the liquid crystal injection time becomes extremely long in a large panel. That is, as shown in FIG. 3, the conventional liquid crystal panel has a structure in which the liquid crystal is injected from the periphery (side portion), so that it takes time for the liquid crystal to move from one periphery to the other periphery. For this reason, large panels with a diagonal length of 100 cm or more are expected to be used for wall-mounted televisions in the future, but are expected to be very expensive or substantially impossible to manufacture. Therefore, the present invention has been made to solve these drawbacks, and aims to provide a liquid crystal panel which can be manufactured substantially in a large panel by shortening the liquid crystal injection time by a simple method. is there.

[0004]

According to the first aspect of the present invention,
In a liquid crystal panel in which polarizing plates are arranged on both sides of a liquid crystal panel in which liquid crystal is sealed in a space surrounded by a pair of transparent electrode-attached substrates via a sealing material and the sealing material and the two substrates, The liquid crystal display has a liquid crystal injection port other than the peripheral portion of the substrate.

According to a second aspect of the present invention, in the liquid crystal panel according to the first aspect, the inside of the panel is divided into a plurality of parts by a sealing material.

According to the first aspect, as shown in FIG. 1, after a liquid crystal injection port is opened in a liquid crystal panel display portion of one substrate, a sealing material is printed on the periphery and bonded to the other substrate. . With such a configuration, the liquid crystal can be injected from the center, and can be injected in a shorter time than the conventional method.
In this case, the position of the injection port is a problem, but it is sufficient to make a hole so as to remove the pixel electrode and the drive electrode line. When a hole is formed, display quality or the like becomes a problem, but in a large panel, the interval between pixels is several mm, and the hole can be made inconspicuous without lowering the display quality. For example, by forming a hole on a light shielding material such as a black matrix, the problem of the hole can be avoided.

A second aspect of the present invention is a liquid crystal panel in which a sealing material is printed on a portion outside the liquid crystal injection port, the panel is divided, and the liquid crystal injection port is provided at the center of each divided portion. The sealing material may be formed on a light-blocking material such as a black matrix by removing a region of the pixel electrode. By doing so, the entry of the liquid crystal is completed, and the strength of the liquid crystal panel is also increased.

[0008]

1 and 2 are partial sectional views of a liquid crystal panel according to the present invention. In the figure, 4 is a substrate with a transparent electrode, 5 is a sealing material, 6 is a liquid crystal layer, 7 is a liquid crystal injection port, 8 is a substrate with a transparent electrode, 9 is a sealing material, and 10 is a liquid crystal injection port. Shown respectively. Note that the figure shows a state in which a part of the substrate with a transparent electrode is cut away for explanation.

As a substrate with a transparent electrode of a liquid crystal panel,
For example, in the case of a TFT type liquid crystal display, a substrate with an active element, a substrate with a full-color electrode with a color filter, and the like can be considered. As the STN type liquid crystal display, a substrate with a striped electrode can be considered.

Although any substrate can be used as a substrate for making holes, a color filter of a TFT type liquid crystal display and a substrate with a black matrix are preferable. Examples will be described below in detail.

[0011]

【Example】

Example 1 A glass substrate with an active element, a full-surface electrode, a color filter and a black matrix 2
In a liquid crystal panel composed of a single substrate, a total of 16 holes were formed in the black matrix substantially at the center of each divided portion obtained by dividing the substrate with electrodes on the entire surface into 16 portions. Thereafter, an alignment film (RN799, manufactured by Nippon Synthetic Rubber) was applied on the two substrates to form an alignment film.

Further, a rubbing alignment treatment was performed so that the liquid crystal molecules were arranged in a twisted arrangement of 90 degrees between the two substrates vertically overlapping.

After printing a sealing material (an epoxy adhesive containing 0.15% by weight of silica particles having a particle diameter of 6 microns) around the perforated substrate, a gap material (particle diameter) is further formed on the alignment film surface. (6 micron silica particles).

The two substrates thus obtained were laminated to form a liquid crystal panel. When the liquid crystal was put into the obtained liquid crystal panel by a vacuum injector, the liquid crystal could be injected in a much shorter time than the injection from the end face.

(Example 2) In a liquid crystal panel comprising a glass substrate with active elements and two substrates provided with full-surface electrodes, a color filter and a black matrix, approximately the center of each divided part obtained by dividing the substrate with full-surface electrodes into 16 parts A total of 16 holes were formed on the black matrix. Thereafter, an alignment film (RN799, manufactured by Nippon Synthetic Rubber) was applied on the two substrates to form an alignment film.

Further, a rubbing alignment treatment was performed so that the liquid crystal molecules were arranged in a twisted arrangement of 90 degrees between the two substrates which were vertically overlapped.

A sealing material (an epoxy adhesive containing 0.15% by weight of silica particles having a particle diameter of 6 μm) is placed on a black matrix so that the periphery of the perforated substrate and the vertical and horizontal divisions are divided into 16 divisions in total. After printing, a gap material (silica particles having a particle diameter of 6 microns) was further sprayed on the alignment film surface.

The two substrates thus obtained were laminated to form a liquid crystal panel. When the liquid crystal was put into the obtained liquid crystal panel by a vacuum injector, the liquid crystal could be injected in a much shorter time than the injection from the end face.

[0019]

As described above, according to the present invention, it is possible to shorten the liquid crystal injection time of a large-sized panel and obtain a liquid crystal panel excellent in workability by using the same manufacturing method as the conventional one.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a liquid crystal panel of the present invention.

FIG. 2 is a partial cross-sectional view showing a liquid crystal panel of the present invention.

FIG. 3 is a partial sectional view showing a conventional liquid crystal panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate with a transparent electrode 2 Seal material 3 Liquid crystal injection port 4 Substrate with a transparent electrode 5 Seal material 6 Liquid crystal layer 7 Liquid crystal injection port 8 Substrate with a transparent electrode 9 Seal material 10 Liquid crystal injection port

Claims (2)

[Claims] 1. A liquid crystal panel having a pair of transparent electrode-attached substrates bonded together via a sealing material, and a liquid crystal panel in which liquid crystal is sealed in a space surrounded by the sealing material and the two substrates. 3. The liquid crystal panel according to claim 1, further comprising a liquid crystal injection port other than a peripheral portion of the one substrate. 2. The liquid crystal panel according to claim 1, wherein the inside of the panel is divided into a plurality of parts by a sealing material.