JPS62269118A - Manufacture of liquid crystal display device - Google Patents

Abstract

PURPOSE:To obtain a liquid crystal display device of good quality by grounding an electrode at the time of the lapping of a display device and eliminating the influence of static electricity. CONSTITUTION:All terminals are short-circuited and ground electrodes 3 and 4 are divided into two as shown in a figure. Then, the terminal of a ground line is brought into contact with the ground electrode 3 at the time of actual lapping and only the half is lapped; and then the terminal of the ground line is brought into contact with the ground electrode 4 and the remainder is lapped to remove charges from the electrode 4 at this time. Consequently, such adverse influence that liquid crystal molecules decrease in contrast owing to elec trostatically charges on the surface of an oriented film is reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing a liquid crystal display device.

[Conventional technology]

Conventionally, in the manufacturing method of a liquid crystal display device, an alignment agent is printed or sprayed on two glass substrates having patterned transparent electrodes, and then an alignment process is performed by rubbing, etc., but the static electricity that occurs at this time can be countered by Nothing in particular was done.

[Problem that the invention seeks to solve]

However, the interface of the alignment film is charged due to the static electricity generated during the above process, which affects the liquid crystal molecules after the liquid crystal is injected, causing negative effects such as a decrease in contrast when actually driving a liquid crystal display device. The present invention has been made in order to eliminate the above-mentioned adverse effects, and provides for minimizing the influence of static electricity on liquid crystal by grounding the electrode during alignment processing such as rubbing and dissipating the electric charge charged on the alignment film. It is something.

[Means to solve the problem]

The present invention relates to a method of manufacturing a liquid crystal display device, and is it possible to eliminate static electricity generated by rubbing? According to the present invention, conventional liquid crystal molecules have a negative effect such as a decrease in contrast due to the charge on the surface of the alignment film, which is removed by using a pole at V'= and grounding the above charge. It can be reduced by removing the The details of the present invention will be explained below with reference to Examples.

〔Example〕

(Example-1) FIG. 1 is a plan view of a substrate showing the structure of an electrode for grounding the electric charge on the alignment film from the electrode in the present invention, and FIG. 2 is a cross-sectional view of the same. In FIG. 1, 1 is a glass substrate, 2 is a transparent electrode, 3°4 is a ground electrode, 5 is an arrow indicating the rubbing direction, and the dotted line is an alignment film. In FIG. 2, 6 is a glass substrate, 7 is a transparent 'a electrode, and 8 is an alignment film. Next, to explain the structure of the electrodes, short-circuit all the terminals and connect them to the ground electrode 3.4 as shown in the figure.
Divide into two parts. When actually rubbing, first touch the terminal of the ground wire to the ground electrode 3 and rub only half of it, then touch the terminal of the ground wire to the ground IE electrode 4 and rub the remaining part.

(Example-2) Figure 3 is a cross-sectional view of the substrate in Example-2, where 9 is a 9x substrate, 1 (N; is a transparent vA [pole), and 11 is an alignment film. When forming a thin film on a glass substrate using a vapor deposition method to form a transparent electrode, the thin film wrapped around the side or back side is used.When forming a transparent electrode using an etching method, resist is applied not only to the front side but also to the side and back side. After forming the pattern, when the alignment film is sprayed or printed and rubbed, the electric charge on the alignment film is removed from the electrode on the back side.

[Effect of feathering]

According to the present invention, it is possible to prevent the effects of charges on the alignment film on liquid crystal molecules, such as a decrease in contrast, during the manufacturing process, making it possible to produce high-quality liquid crystal display devices.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an electrode pattern on one side substrate of a liquid crystal display device, and @2'12 is a cross-sectional view of the same. Third
The figure is a cross-sectional view of a substrate for explaining Example 2. 1...Glass substrate 2...Transparent electrode 3.4...Ground electrode 5...Arrow indicating the rubbing direction 6...
Glass substrate 7...Transparent electrode B...Alignment film 9...Glass substrate 10...b Moe electrode 11...Alignment film. Applicant Seiko Epson Co., Ltd. Agent Patent Attorney Tsutomu Mogami (and 1 other person) Figure 1

Claims (1)

[Claims] A method for manufacturing a display device in which a liquid crystal is sandwiched between at least two electrodes, the method comprising: earthing the electrodes during rubbing of the display device to eliminate the influence of static electricity.