JPH0152734B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a liquid crystal device, and particularly to a method for rubbing a substrate.

As methods for aligning liquid crystal molecules, methods such as rubbing, oblique evaporation of SiO or Au, and oblique etching using an ion beam are used.
The present invention is directed to a case using a rubbing method.

FIG. 1 is an explanatory diagram of a conventional rubbing method. The lower substrate 1 has an electrode pattern 2 and a common terminal 3 for electrical connection with the upper substrate.
is formed. A metal mask 4 shown by diagonal lines is placed on the lower substrate 1, and rubbing is performed to perform alignment processing. If rubbing is performed in this state, static electricity will be generated on the substrate surface, and dust will adhere to the gap 5 between the right end electrode pattern where the common terminal 3 is not formed and the metal mask 4. Alternatively, static electricity sparks may occur in the gap 5. As a result, the alignment of liquid crystal molecules is locally disturbed due to contamination or destruction of the interface, resulting in a phenomenon in which the liquid crystal molecules are not oriented.

An object of the present invention is to provide a liquid crystal display element that eliminates the drawbacks of the above-mentioned prior art.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.
Figure 2 shows an example applied to a static type element.
FIG. 3 shows an example applied to a time division type element. As shown in the figure, a dummy lead 6 is provided which is electrically connected to the electrode pattern 2 on the side opposite to the common terminal 3 on the lower plate electrode surface that does not come into direct contact with the socket. The dummy leads 6 are formed up to the end surface of the lower substrate 1, and come into contact with the mask 4 when rubbing is performed. In this case, one or more dummy leads 6 may be provided.

As is clear from the above explanation, dummy lead 6
Static electricity is generated by rubbing the surface of the board overlaid with a conductive mask 4 that contacts both the dummy leads 6 and the common terminal 3 and has an opening corresponding to the surface to be rubbed. Also, since both sides of the electrode pattern 2 are passed through the mask 4 and the potential difference is reduced, generation of sparks can be prevented and the alignment characteristics can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the relationship between the lower plate electrode pattern and the mask of a conventional element, and FIGS. 2 and 3 are plan views showing embodiments of the present invention, respectively. 1... Lower board, 2... Electrode pattern, 3...
Common terminal, 4...Frame mask, 5...Gap, 6...
...Dummy lead.

Claims (1)

[Claims] 1. In a method of manufacturing a liquid crystal display element in which a liquid crystal is sandwiched between a pair of substrates whose inner surfaces facing each other are rubbed, conduction is established between an electrode of one substrate that does not come into direct contact with a socket and an electrode of the other substrate. A dummy lead electrically connected to the electrode of the one substrate and extending almost to the outer shape of the one substrate is provided at a position opposite to the common terminal provided for the connection. on the board,
A liquid crystal display characterized in that the one substrate is rubbed by overlapping a conductive mask that contacts both the common terminal and the dummy lead and has an opening corresponding to the surface of the substrate to be rubbed. Method of manufacturing elements.