JPS6226736Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a liquid crystal display element that is devised to prevent erroneous display lighting caused by static electricity.

<Prior Art> FIG. 1 shows a schematic configuration of a conventional and commonly used liquid crystal display element. The figure shows a field-effect liquid crystal display (TN) using twisted nematic liquid crystal.
-FEM liquid crystal display element). In the figure, 1 and 1' are polarizing plates whose polarization directions are perpendicular to each other, 2 and 2' are substrates made of glass, plastic, etc., and 3 and 3' are patterns formed on the inner surfaces of the substrates 2 and 2' by vapor deposition, sputtering, etc. A transparent electrode pattern such as an ITO film, 4 and 4' are insulating alignment films that cover the transparent electrode patterns 3 and 3', and 5 is a sealing material such as resin for forming a gap between the substrates 2 and 2'. , 6 is a spacer, 7 is a liquid crystal filled in the gap between the substrates 2 and 2', and 8 is a reflecting plate.
The pattern shape of the transparent electrode patterns 3, 3' is shown in FIG. The transparent electrode pattern 3 on the upper substrate (the substrate closer to the viewer) 2 is a first electrode 3a that creates a Japanese segment-shaped pattern.
A first power supply path 3b that sends an electric signal to the first electrode 3a, and a third power feed path 3c that sends an electric signal to a second power feed path 3'b, which will be described later, via the transfer material 9. The transparent electrode pattern 3' on the lower substrate (the substrate farthest from the viewer) is a second electrode pattern defining the outer shape of the above-mentioned Japanese segment-shaped pattern.
The second electrode 3'a is composed of an electrode 3'a and a second power supply path 3'b which sends an electric signal to the second electrode 3'a.

In the liquid crystal display element with the conventional structure described above, when an observer rubs the upper polarizing plate 1 with a finger, cloth, etc., static electricity is generated, and this static electricity causes an induced charge on the transparent electrode pattern 3 in the substrate 2. There was a problem in that the liquid crystal molecules were excited by the charging, causing erroneous lighting.

<Purpose> The present invention was made to solve the above-mentioned conventional problems. Even if static electricity is generated in the liquid crystal display element due to the above-mentioned circumstances, the generated static electricity will cause the display pattern to change. The purpose is to prevent erroneous lighting from occurring.

<Example> Hereinafter, an example of the liquid crystal display element according to the present invention will be described in detail with reference to the drawings. FIG. 3 is a structural explanatory diagram showing a pattern shape of an embodiment of a liquid crystal display element according to the present invention. The basic structure is the same as that shown in FIG. In FIG. 3, reference numeral 10 denotes a transparent electrode pattern on the upper substrate (substrate closer to the observer) 2, and the transparent electrode pattern 10 includes a first electrode 10a and a first electrode 10a, which creates a Japanese segment-shaped pattern. Sending an electrical signal to a first power feeding path 10b that sends an electrical signal to the first electrode 10a and a second power feeding path 10'b (described later) via the transfer material 9,
and a third power supply path 10c extending beyond the transfer material 9. On the other hand, 10' is a transparent electrode pattern on the lower substrate (substrate farthest from the observer) 2', and the transparent electrode pattern 10'
The second electrode 10'a defines the outer shape of the Japanese segment-shaped pattern, and the second electrode 1
A second power supply line 10'b that sends an electrical signal to 0'a
It consists of The pattern shape of one embodiment of the liquid crystal display element according to the present invention shown in FIG.
As is clear from a comparison with the pattern shape of the conventional liquid crystal display element shown in the figure, in the liquid crystal display element of the present invention, the first power supply path 10b and the third power supply path 10c occupy a large area. Thus, the display viewing area of the upper substrate 2 is substantially entirely covered by the first electrode 10a, the first power supply path 10b, and the third power supply path 10c.

As mentioned above, since the first power supply path 10b and the third power supply path 10c occupy a large area, if an observer rubs the upper polarizing plate 1 with a finger, cloth, etc., static electricity is generated and this static electricity Even if induced charging occurs in the transparent electrode pattern 3 in the upper substrate 2, the first power supply path 10b and the third power supply path 10
Since the area of c is large, the charged charges are immediately dissipated, and the excitation of the liquid crystal molecules due to the charging can be weakened. Further, most of the portion of the third power supply path 10c extending beyond the transfer material 9 faces the second power supply path 10'b on the lower substrate 2' and has the same potential. Therefore, the liquid crystal inside the substrate can be statically shielded from static electricity, thereby preventing the inside of the substrate from being charged.

In the embodiments described above, a static drive type liquid crystal display element was explained.
The present invention is of course applicable to dynamic drive type liquid crystal display elements, and is further applicable not only to field effect type liquid crystal display elements but also to other types (DSM type, etc.).
It is also applicable to liquid crystal display elements.

<Effects> According to the present invention, it is possible to prevent erroneous lighting due to excitation of liquid crystal molecules due to static electricity generated by friction, thereby improving the reliability of display.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a schematic configuration of a conventional liquid crystal display element, FIG. 2 is a configuration explanatory diagram showing a display pattern of a conventional liquid crystal display element, and FIG. 3 is a display pattern of a liquid crystal display element according to the present invention. FIG. In the figure, 1, 1': polarizing plate, 2, 2': substrate, 3,
3': transparent electrode pattern, 4,4': insulating alignment film,
5: Seal material, 6: Spacer, 7: Liquid crystal, 8: Reflector, 9: Transfer material, 10: Transparent electrode pattern.

Claims (1)

[Scope of utility model registration request] A first electrode and a second electrode whose overlapping portions form a display element are formed on the surfaces of a first substrate and a second substrate that sandwich a liquid crystal layer;
a first power feeding path and a second power feeding path that send electrical signals to the electrodes of the electrodes, respectively; and a third power feeding path that sends electrical signals to the second feeding path via a transfer material on the first substrate surface. a liquid crystal display element in which a display viewing area of the first substrate is substantially entirely covered by the first electrode, the first power supply path, and the third power supply path; A liquid crystal display element characterized by being buried.