LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Abstract

Disclosed herein is a method of manufacturing a liquid crystal display device of dropping liquid crystals to be interposed between a first substrate and a second substrate to one of the substrates. The method includes a step of applying the sealant to one of the substrates where a region closed by the sealant is formed by a sealant on the main surface of the substrate, and, in this closed region, a liquid crystal filling region as a display region and a capturing region to the outer periphery of the liquid crystal filling region for intaking surplus liquid crystals or voids are formed. According to this method, there is provided a leakage channel formed between the liquid crystal filling region and the capturing region just after the combining of the substrates to the capturing region and through which surplus liquid crystals dropped in the liquid crystal filling region are caused to flow out, whereby the cell gap spacing the substrates can be accurately kept at an ideal value, irrespective of the fluctuation of the amount of the liquid crystals dropped to one of them.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A to FIG. 1C are views for explaining a liquid crystal filling step according to the invention in which FIG. 1A is a plan view for a first substrate (main surface) just after the application of a sealant, FIG. 1B is a plan view for the first substrate just after the combining (bonding) for a second substrate with (to) the first substrate, and FIG. 1C is a plan view of the first substrate upon completion of the combining (bonding) between the first substrate and the second substrate, respectively;

FIGS. 2A and 2B show an upper plan view and a cross sectional view just after the application of a sealant to the first substrate respectively, and FIG. 2C shows a cross sectional view of a sealing material upon completion of the combining between the first substrate and the second substrate; and

FIG. 3 shows a relation between excess and insufficiency of a liquid crystal amount supplied between the first substrate and the second substrate, and a gap width for spacing the substrates (main surface).

Claims

1. A method of manufacturing a liquid crystal display device formed by interposing liquid crystals between a first substrate and a second substrate, comprising: a sealant applying step of applying a sealant to the first substrate,a liquid crystal dropping step of dropping liquid crystals to a region surrounded with the sealant of the first substrate, anda step of combining the first substrate and the second substrate with each other,

2. A method of manufacturing a liquid crystal display device according to claim 1, wherein the openings of the second seal frame are formed such that the aperture ratio per unit range is smaller as they are nearer to the liquid crystal dropping position.

3. A method of manufacturing a liquid crystal display device according to claim 1, wherein the sealant applying step applies,a first seal frame and a second seal frame such that when the first substrate and the second substrate are combined with each other, the volume surrounded with the first substrate, the second substrate, and the first seal frame is equal with the sum of the volume of the second seal frame and the maximum amount for the fluctuation of the liquid crystal dropping amount.

4. A method of manufacturing a liquid crystal display device according to claim 1, wherein the sealant applying step applies,a second seal frame such that when the first substrate and the second substrate are combined with each other, the volume inside the second seal frame is equal with the minimum amount for the fluctuation of the liquid crystal dropping amount.

5. A method of manufacturing a liquid crystal display device formed by interposing liquid crystals between a first substrate and a second substrate, comprising: a sealant applying step of applying a sealant to the first substrate,a liquid crystal dropping step of dropping liquid crystals to the inside surrounded with the sealant of the first substrate, anda step of combining the first substrate and the second substrate with each other,

6. A liquid crystal display device manufactured by the method of manufacturing the liquid crystal display device according to any one of claims 1 to 5.

7. A liquid crystal display device formed of liquid crystals interposed between a first substrate and a second substrate,