Low-cost large-screen wide-angle fast-response liquid crystal display apparatus

Abstract

The present invention discloses a super large wide-angle high-speed response liquid crystal display apparatus manufactured by using a photolithographic procedure for three times. The invention adopts a halftone exposure technology to form a gate electrode, a common electrode, a pixel electrode and a contact pad, and then uses the halftone exposure technology to form a silicon (Si) island and a contact hole, and a general exposure technology to form a source electrode, a drain electrode and an orientation control electrode. A passivation layer uses a masking deposition method. A film is formed by using a P—CVD method, or a protective area is formed at a local area by using an ink coating method or spray method, and a TFT array substrate used for the super large wide-angle high-speed response liquid crystal display apparatus manufactured by using a photolithographic procedure for three times can be produced.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a large-screen wide-angle liquid crystal display apparatus manufactured by using a halftone exposure method.BACKGROUND OF THE INVENTION[0002]In multi-domain vertical alignment (MVA) liquid crystal display apparatuses, an orientation control electrode for controlling an alignment of a liquid crystal molecule has been disclosed in Japan Laid Open Patents Nos. 07-230097, 11-109393 and 2001-042347.SUMMARY OF THE INVENTION[0003]In view of the shortcomings of the prior art, the inventor of the present invention based on years of experience in the related industry to conduct researches and experiments, and finally developed a large-screen wide-angle liquid crystal display apparatus in accordance with the present invention to overcome the foregoing shortcomings.[0004]Therefore, it is a primary objective of the present invention to adopt a prior art orientation control electrode of an LCD panel structure to correspond to smaller pi...

AI Technical Summary

Benefits of technology

The present invention is a large-screen wide-angle liquid crystal display apparatus that overcomes the shortcomings of prior art. It uses a prior art orientation control electrode of an LCD panel structure to correspond to smaller pixels, but this method is not applicable for larger pixels. The invention reduces the number of photolithographic procedures of the TFT active matrix substrate and the CF substrate during the manufacture of the TFT active matrix liquid crystal display apparatus, lowering the manufacturing cost and improving the yield rate. The technical measures taken by the invention include avoiding unstable and swinging discrimination lines, installing two types of orientation control electrodes at an upper layer of a pixel electrode through an insulating film, and introducing a halftone exposure method. The invention also divides a basic unit pixel into two sub pixels and produces different voltages applied to the liquid crystal molecules of the two sub pixels to achieve a high-speed response. The invention further avoids unnecessary discrimination lines to improve the overall light transmission rate of the screen and reduce unevenness of the LCD panel. The manufacturing process of the invention is simple and cost-effective, and the display quality of the MVA liquid crystal display apparatus can be enhanced.

Problems solved by technology

Since only one type of orientation control electrode is used only, and the edge field effect of a pixel electrode is adopted, therefore it is not applicable for lager pixels.

At present, the mainstream of multi-domain vertical alignment (MVA) liquid crystal display apparatus generally uses a bump or slit electrode for the alignment control of the sides of a color filter (CF) substrate, and this method can make a proper alignment if the pixel is large, but the cost of CF substrates is high, and becomes an obstacle for manufacturing a large-screen liquid crystal TV by a low cost.

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