JPS63100427A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To prevent electrostatic sparking between segments by forming a region where transparent conductive films having the gaps smaller than the gaps between the transparent conductive films within an effective display region are juxtaposed on the same substrate surface. CONSTITUTION:After the transparent conductive films 4 having a desired shape are formed on the glass substrate 10, a polyimide film is coated on the films as a liquid crystal molecule orienting means; thereafter, the film is rubbed by velvet, etc. A lightning conductor pattern 1 is formed at the gaps (g) narrower than the min. gaps (d) between the segment electrodes 4 in part of leading around leads 12 in order to prevent the generation of an electrostatic spark fault at the time of said rubbing treatment. The lightning conductor pattern 1 is preferably formed on the outside of the effective display region 20 or within a sealing part 3 of the liquid crystal cell. The gaps (g) facing the lightning conductors are preferably formed considerably narrower than the gaps (d). The electric charge accumulated in the respective segment electrodes is thereby gradually discharged by the pattern 11 and the same potential is attained in all the segments, by which the electrostatic sparking between the segments is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal display element, and particularly to an electrode pattern suitable for preventing electrostatic sparks that adversely affect a liquid crystal alignment film.

[Conventional technology]

In order to prevent static electricity damage,
It is desirable to short-circuit all the terminals as described in the above issue, but in this case, it is necessary to cut off the common ground after cutting the cells, which reduces the number of pieces of glass that can be removed from each sheet.

Furthermore, depending on the surface arrangement, the common ground overlaps each terminal, and when electricity is applied, there is a great risk of electrolytic corrosion or contact between the electrodes due to foreign objects, and these points have not been taken into account.

[Problem that the invention seeks to solve]

In the above-mentioned conventional technology, it is necessary to cut off the common ground after cutting the cells, which reduces the number of pieces that can be obtained per glass substrate. Also, depending on the layout, the common ground may overlap on top of each terminal, creating a special current-carrying layer.

There is a touch between the electrodes due to a foreign object. This point was not taken into consideration and there was a problem in the design.

In the present invention, when the common ground cannot be used due to electrolytic corrosion caused by the common ground or poor contact between electrodes, or in order to increase the number of electrodes per glass substrate, the common ground is cut off, but the film is cut off due to the design. The purpose is to eliminate design problems such as static electricity and to eliminate static electricity problems without using a common ground.

[Means for solving problems]

The above object is achieved by making the shape of the electrode pattern used when processing the transparent conductive film on the glass substrate as follows.

Opposing lead wires (hereinafter referred to as lightning rod patterns) are brought out from the terminal lead wires inside the cell and outside the effective display area of the seal part, and the gap between the lead wires is narrower than the adjacent segment gap (usually 5~ 30um) - All terminals drawn out from each segment are connected using this lightning rod pattern. Also, all patterns other than the lighting terminals (alignment marks on the upper and lower plates, etc.) are connected.

[Effect]

Unlike the above-mentioned common ground, the lightning rod pattern is connected inside the cell inside the terminal, so there is no need to cut it off, so the number of pieces to be removed per glass substrate can be maximized. Further, due to the lightning rod pattern, the electric charge stored in each segment is gradually discharged, and all the segments have the same potential, thereby preventing the generation of static electricity sparks.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a plan view of a glass substrate on which segment electrodes are formed of a pair of glass substrates constituting a liquid crystal cell. A plurality of segment electrodes 4 are formed on a glass substrate 10, and electrode terminals 11 for external circuit connection are formed on the edges of the substrate 10.
is formed, and the segment electrode 4 and the electrode terminal 11 are connected by a lead wire 12.The electrode terminal 11 and the lead wire 12 are integrally made of indium oxide, tin oxide, etc. It is formed.

After forming the transparent conductive film 4 in a desired shape on the glass substrate 10 in this manner, a polyimide film is applied as a means for aligning liquid crystal molecules, and then rubbed with velvet or the like. In order to prevent this static electricity spark failure from occurring during the rubbing process, a lightning rod pattern 1 is formed in a portion of the routing lead 12 with a gap g narrower than the minimum gap d between the segment electrodes 4. This lightning rod pattern 1 is desirably formed outside the effective display area 20 or within the seal portion 3 of the liquid crystal cell, and the lightning rod opposing gap g is:

It is preferable to make it significantly narrower than the gap d (usually 5 to 3 oArm).

According to this embodiment, the electric charge stored in each segment electrode is gradually discharged by the lightning rod pattern 11, and all the segments have the same potential, thereby preventing electrostatic sparks between the segments.

〔Effect of the invention〕

According to the present invention, generation of electrostatic sparks between segments can be prevented without using a short circuit pattern outside the cell such as a common ground. This has the effect of eliminating design limitations without reducing the number of chips per substrate.

[Brief explanation of the drawing]

FIG. 1 is a front pattern diagram of a liquid crystal display element according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Lightning rod pattern, 2... Seal, 4... Segment electrode, 10... Glass substrate, 11... Electrode terminal, 12... Routing lead. Agent: Patent Attorney Katsuo Ogawa/゛) 1... Lightning rod pattern 2... Seal 4... Segment electrode 10... Glass substrate 11... Electric FA terminal 12... Routing lead

Claims (1)

[Claims] 1. In a liquid crystal display element that includes at least one substrate on which a plurality of transparent conductive films are formed on the inner surface, the transparent conductive films are arranged side by side on the same substrate surface with a gap smaller than the gap between the transparent conductive films in the effective display area. A liquid crystal display element characterized in that a region is formed.