Liquid crystal display device having thin glass substrate on which protective layer formed and method of making the same

Abstract

The LCD according to present invention includes a first substrate and a second substrate, two protective layers including at least one layer formed on outer surface of the first and second substrates, a transparent electrode formed on inner surface of the first substrate or the second substrate, an alignment layer formed on the transparent electrode, and two polarizers attached on the first and second substrates.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device having glass substrates uniformly and smoothly formed on its outer surface to increase the mechanical strength thereof and method of making the same. [0002] As a display device of a television and a personal computer, etc., a large size cathode ray tube(CRT) display device has been used. However, since the screen must be separated from the electron gun more than predetermined distance for large size screen CRT, the volume is increased. Thus, this CRT cannot be applied to the thin weight, small size, and low power consumption electronic device such as a wall-mounted television, a portable television and a notebook computer, etc. [0003] According to the purpose of display device, the flat panel display devices such as LCD(liquid crystal display), PDP(plasma display panel), ELD(electroluminescent display), and VFD(vacuum fluoresce...

AI Technical Summary

Benefits of technology

[0010] An object of the present invention is to provide the LCD having thin glass substrate which is light and its surface is smooth and strong from mechanical impulse.

Problems solved by technology

Thus, this CRT cannot be applied to the thin weight, small size, and low power consumption electronic device such as a wall-mounted television, a portable television and a notebook computer, etc.

The LCD-applied portable television and notebook computer are on the market resent, but there are also problems to be solved in this LCD yet.

However, the driving circuit and the thin film transistor, which are necessary element of the LCD, are so thin that the weight cannot be reduced.

However, the thin glass substrate causes the damage and the surface roughness, so that the mechanical strength is weakened and the image quality of LCD is deteriorated.

In this etching method, however, because of impurities created in etching process, the substrate is not uniformly etched.

In this method, however, bubbles appear on the substrate, or cracks occur by mechanical impulse, the bubbles were created in process of manufacturing glass and diameters of several um—several ten um.

Further if the cracks occur on the substrate by an etching process of the glass or mechanical impulse, impurities pass into the substrate in manufacturing process of the LCD thereby a quality of the LCD is down.

In addition, since the crack is intensified according to passing of time, thereby the substrate is brokendown.

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