Adjusting Apparatus of Gap Width and Method Thereof

Abstract

Provided is an adjusting method of a gap width of a laminated body composed of a color filter substrate and a TFT array substrate. A decompression chamber acting as a closed space communicating with a vacuum pump is decompressed, while a pressurization chamber that includes a decompression chamber is pressurized by driving a compressor.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]This application is a divisional of application Ser. No. 10 / 732,432, filed on Dec. 10, 2003, which is a divisional application of U.S. application Ser. No. 09 / 682,897, filed Oct. 30, 2001, the disclosures of which is incorporated by reference herein in their entirety.BACKGROUND OF INVENTION[0002]The present invention relates to a manufacturing method of a display device such as a liquid crystal display panel, more particularly to an adjusting technique of a gap width between two device substrates.[0003]As an image display device for a personal computer or other various monitors, a liquid crystal display device has been remarkably widespread. Such a liquid crystal display device is generally constructed in such a manner that a backlight as a planar light source for illumination is disposed on a back of a liquid crystal display panel to irradiate a liquid crystal surface of a specified expanse so as to even the brightness thereon, and that...

AI Technical Summary

Benefits of technology

This approach allows for the adjustment of gap widths to a desired micro value, improving image quality by preventing substrate exfoliation and ensuring even pressure application, thus enhancing the manufacturing process of liquid crystal display panels.

Problems solved by technology

Image quality of the liquid crystal display device is greatly affected by the gap.

Thus, the cell gap with a desired width is hard to obtain.

Although described later in detail, with such a pressurization force of about 1 kgf / square cm, the cell gap of a desired width was not able to be obtained.

Accordingly, by the conventional method of decompressing the sealed container, it is difficult to adjust the cell gap to a desired micro value.

Specifically, when a high air pressure is applied to the sealed container from the outside, the air in the sealed container is compressed so as to oppose such a pressurization force, resulting in a pressure increase in the cell gap.

Thus, the force acts in the direction where the array substrate and the color filter substrate are torn off from each other as described above, affecting adversely the control of the cell gap.

Such exfoliation in an uncured state of the sealant is not desirable since the exfoliation causes bubble mixing to the sealant and leads to the lowering of joining forces of the cured sealant.

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