JPH11133438A - Liquid crystal display element and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the spraying uniformity of spacers, to enhance adhesion property between substrates and to improve a display grade by using ferromagnetic spacers and using magnetic field for holding the ferromagnetic spacers between glass substrates. SOLUTION: The glass substrates with ITO electrodes are used for the substrate A and the substrate B and the ferromagnetic material spacers C are used for the spacers. The spacers C are sprayed by using a dry process spraying device by nitrogen blow. An acrylic resin material is used for an end-sealing material D. Further, the uniform magnetic field by a solenoid device is applied to the magnetic field F. The substrate A and the substrate B are bonded to each other by the end-sealing material D of an acrylic resin material within the magnetic field F, by which the ferromagnetic material spacers C are uniformly dispersed to the prescribed positions without movement between the substrate A and the substrate B. As a result, the spacing between the substrate A and the substrate B is made uniform and the execution of the uniform display is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid crystal display device and a method for manufacturing the same.

[0002]

2. Description of the Related Art A large-capacity, high-speed response,
Development for mass production is in progress. In particular, in recent years, development for achieving higher definition and improving display quality has been promoted.

In general, a liquid crystal display device has a structure as shown in FIG.
The first glass substrate 3 on which the first transparent electrode 1 and the alignment film 2 are formed and the second glass substrate 6 on which the second transparent electrode 4 and the alignment film 5 are formed are subjected to a rubbing treatment to form the spacer 7 A liquid crystal 9 is fixed between the first glass substrate 3 and the second glass substrate 6 by a sealing material 8 containing a conductive material.
It is made by encapsulating by a dripping method.

Then, as shown in FIG. 3, a spacer spraying step of spraying the spacers 7 on the first glass substrate 3 by the spacer spraying machine 7a, and a seal on the periphery of the second glass substrate 6 in the liquid crystal dropping step. The liquid crystal 9 is dropped while leaving the part of the material 8, and the first glass substrate 3 and the second glass substrate 6 are bonded together by the bonding of the sealing material 8 in a substrate bonding step. Note that the first glass substrate 3 in the spacer spraying step is charged with static electricity, and the spacers are uniformly spread on the first glass substrate 3. In the method of manufacturing the liquid crystal display element, the liquid crystal dropping step is performed before the substrate bonding step.
Moves, which causes a non-uniform display. Therefore, in order to eliminate this drawback, an attempt was made to add an adhesive to the surface of the spacer, but in the case of the spacer with the adhesive, there was a problem that the alignment margin of the liquid crystal panel was reduced due to the adhesive. .

[0005]

As described above, in the prior art, the spacer moves when the substrates are bonded to each other, resulting in non-uniform display. Further, if a spacer with an adhesive is used, the movement of the spacer can be prevented. There is a problem that the alignment margin of the panel is reduced. SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display element that does not move spacers and has no disadvantage of reducing the alignment margin of a liquid crystal panel, and a method of manufacturing the same.

[0006]

In order to solve the above-mentioned problems, the present invention uses a ferromagnetic spacer and uses a magnetic field for holding the ferromagnetic spacer between the glass substrates, so that the uniformity of dispersion of the spacer is improved. This is to enhance the adhesion between the holding and the substrate and improve the display quality.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be realized by the embodiments described in the claims. However, the structure, operation and effects of the present invention will be described below so that the present invention can be easily implemented. It shall be.

That is, as described in claim 1, a first glass substrate on which a first transparent electrode and an alignment film are formed, and a second glass substrate on which a second transparent electrode and an alignment film are formed. Is fixed with a sealing material via a spacer, and in a liquid crystal display element in which liquid crystal is sealed between the first glass substrate and the second glass substrate, the spacer is a ferromagnetic spacer. When the glass substrate is bonded to the second glass substrate in a magnetic field, the adhesion to the substrate can be enhanced in a state where the ferromagnetic spacers are uniformly dispersed without moving. Therefore, display uniformity can be improved. Further, since the spacer is not a spacer with an adhesive, the compounding margin of the liquid crystal panel is not reduced.

According to a second aspect of the present invention, there is provided a first glass substrate having a first transparent electrode and an alignment film formed thereon, and a second glass substrate having a second transparent electrode and an alignment film formed thereon. A spacer spraying step of spraying a ferromagnetic spacer on one of the glass substrates, a liquid crystal dropping step of dropping liquid crystal on the other glass substrate, and applying a magnetic field to the first glass substrate and the second glass substrate. By polymerizing in a state of being in close contact with each other under the applied state, by a manufacturing method having a substrate bonding step of bonding both glass substrates by a sealing material provided on the peripheral edge of the first or second glass substrate, The ferromagnetic spacer can be uniformly present without moving between the glass substrates. Therefore, the display contents can be made uniform.

It is preferable to use a ferromagnetic spacer as the ferromagnetic spacer, and to spray the ferromagnetic spacer by using a dry spraying apparatus by nitrogen blowing.

Hereinafter, a specific embodiment of the present invention will be described with reference to FIG.

[0012]

EXAMPLE A glass substrate with an ITO electrode was used for substrate A and substrate B, and a ferromagnetic spacer C was used for the spacer.
Is used. Then, a dry spraying device using nitrogen blowing is used in the spacer spraying process. An acrylic resin material was used for the sealing material D, and a liquid crystal material manufactured by Chisso Corporation was used for the liquid crystal E to be dropped. The magnetic field F was given a uniform magnetic field by a solenoid device.

In the substrate bonding step, the ferromagnetic spacer C is moved between the substrate A and the substrate B by bonding the substrate A and the substrate B together in a magnetic field F with a sealing material D made of an acrylic resin material. Without dispersing evenly at predetermined positions, the function of making the distance between the substrate A and the substrate B uniform is achieved. Therefore, a liquid crystal display element capable of performing uniform display can be realized.

[0014]

As described above, according to the first aspect of the present invention, the ferromagnetic spacer is moved between the first and second glass substrates in a magnetic field by using the ferromagnetic spacer as a spacer. Therefore, it is possible to enhance the uniformity of the surface and the adhesion between the first and second glass substrates, thereby improving the display quality.

According to a second aspect of the present invention, there is provided a manufacturing method capable of easily realizing a liquid crystal display element having the effects of the first aspect of the present invention.

[Brief description of the drawings]

FIG. 1 is a process explanatory view of a method for manufacturing a liquid crystal display element according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a general liquid crystal display element.

FIG. 3 is a process explanatory view of a method of manufacturing a conventional liquid crystal display element.

[Explanation of symbols]

 A, B Substrate C Ferromagnetic spacer D Sealing material E Liquid crystal F Magnetic field

Claims (2)

[Claims] 1. A first glass substrate on which a first transparent electrode and an alignment film are formed, and a second glass substrate on which a second transparent electrode and an alignment film are formed by a sealing material via a spacer. In a liquid crystal display element fixed and liquid crystal sealed between the first glass substrate and the second glass substrate,
A liquid crystal display device, wherein the spacer is a ferromagnetic spacer. 2. A method according to claim 1, wherein the first glass substrate on which the first transparent electrode and the alignment film are formed and the second glass substrate on which the second transparent electrode and the alignment film are formed are provided. A spacer spraying step of spraying a ferromagnetic spacer, a liquid crystal dropping step of dropping a liquid crystal on the other glass substrate, and a close contact between the first glass substrate and the second glass substrate under a magnetic field. A method for producing a liquid crystal display device, comprising a substrate bonding step of bonding both glass substrates with a sealing material provided on a peripheral edge of the first or second glass substrate in a state where the two substrates are polymerized in such a state.