JPH03209426A - Film-like liquid crystal display element - Google Patents

Abstract

PURPOSE:To improve reliability (mechanical strength) by providing electrodes for conduction for connecting transparent electrodes on the side where leader electrode parts are not provided in the outer peripheral part of a panel. CONSTITUTION:The electrodes 16 for conduction formed by using carbon to connect the transparent electrodes 12' formed in prescribed pattern shapes on substrates facing each other are provided. Namely, the electrodes 16 for conduction are provided on any side where the leader electrode parts 17 are not formed in the outer peripheral part 15 of the panel. Direct load is, therefore, not impressed to the electrodes 16 for conduction even after pattern changing even if such load as to spread the spacing between the substrates 11 and 11' facing each other is applied on the substrates by bending the leader electrode parts 17 of the film-like conduction display element; therefore, the electrodes 16 for conduction are not cut and disconnection defects are entirely eliminated. The reliability is improved in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a film-like liquid crystal display element that can be made thinner and lighter by using a film substrate instead of a conventional glass substrate.

BACKGROUND OF THE INVENTION In general, a liquid crystal display element is constructed by arranging substrates 1.1° of glass or film having transparent electrodes 2.2' of a desired display pattern facing each other, as shown in the cross section of FIG. The peripheral portion is fixed with a sealant 3, a liquid crystal 4 is interposed therein, and then polarizing plates 5, 5' are bonded to both sides. As shown in the plan view of FIG. 3, a conductive electrode 6 is provided to connect the opposing transparent electrodes 2 and 2', thereby connecting the lead electrode part 7 of the substrate 1' on one side to the drive circuit. It is possible to display the same element simply by However, this conduction electrode 6 is arranged on the outer peripheral line of the sealant 3.

Problems to be Solved by the Invention When using a conventional glass substrate, as shown in FIG.
Even when a load is applied to the X portion where the conduction electrode 6 is provided, which bends the extraction electrode portion 7, the substrate 1
Since the conductive electrode 6 is sufficiently hard and difficult to bend, stress is not applied to the conductive electrode 6, and defects such as disconnection do not occur. but,
In a film-like liquid crystal display element, the film substrate 1
′ is flexible, so a bending load is often applied to the There was a problem in that this occurred.

The present invention aims to solve such conventional problems and improve the reliability (mechanical strength) of film-like liquid crystal display elements.

Means for Solving the Problems In order to achieve this object, the present invention constructs a panel by encapsulating liquid crystal in a pair of film substrates on which transparent electrodes in a desired pattern are formed, facing each other. An extraction electrode portion connected to the drive circuit is formed on the outer periphery of the panel, and a conduction electrode for connecting the transparent electrode is provided on a side of the outer periphery of the panel where the extraction electrode portion is not provided. be.

Effect: With this configuration, even if a load is applied that bends the extraction electrode part and widens the gap between the facing substrates, the conduction electrode is formed at a location different from the part where the extraction electrode part is provided. Therefore, no load is directly applied to the conduction electrode, the conduction electrode is not disconnected, and there are no disconnection defects.

In this way, by simply changing the position of the conduction electrode, even a film-like liquid crystal display element using a film substrate can achieve the same reliability as a liquid crystal display element using a conventional glass substrate.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, reference numeral 11.11' denotes a PES (polyethersulfone) film substrate with a thickness of 250 μm and integrated with a polarizing plate, and transparent electrodes 12. 12' is formed. This polarizing plate integrated film substrate 11.
11' are arranged facing each other with a required interval so that the transparent electrodes 12 and 12' are on the inside, and the peripheral part is fixed in a ring shape with a sealant 13, and a liquid crystal 14 is injected within the interval. has been done. Further, a conductive electrode 16 made of carbon is provided to connect the transparent electrodes 12 and 12' formed in a desired pattern on the opposing substrates. In this case, as in the conventional example, the conduction electrode 16
is not provided on the side where the extraction electrode portion 17 is formed, and as shown in FIG.
Provided on any side that does not form a However, in the case of such a configuration of a liquid crystal display element, the leading electrode 19 of the transparent electrode 12.12' having a desired pattern formed on the opposing film substrates 11.11' is coated with the sealant 13.
If it is formed on the inner display part, an unnecessary display will be displayed, so it is preferable to overlap it with the sealant 13 or form it on the outer peripheral part 15 of the panel.

However, the film substrate 11.1
Spacers 1 dotted to keep the 1' spacing constant
8 is not arranged, and the upper and lower film substrates 11.1
1' may also touch. Here, if another electrode is formed at the same position above and below the panel outer periphery 15, a short circuit will occur, so the routing electrode 19 to avoid this
should be designed.

That is, according to this embodiment, by providing the conduction electrode 16 on any side of the panel outer periphery 15 where the lead electrode part 17 is not formed, the lead electrode part 17 of the film-like liquid crystal display element is bent and facing film substrate 11.
Even if a load is applied that widens the distance between 11',
Since no load is directly applied to the conductive electrode 16 after the pattern has been changed, the conductive electrode 16 is not cut and there is no disconnection defect.

Effects of the Invention As described above, the present invention merely changes the position of the conduction electrode, and even if a load is applied to widen the gap between the film substrates, no load is directly applied to the conduction electrode.
This conductive electrode 16 is not cut and there is no disconnection defect. Therefore, film-type liquid crystal display elements using film substrates can achieve the same reliability as liquid crystal display elements using conventional glass substrates, and can also achieve reliability in curved displays, which was not possible with conventional glass substrates. As a result, the scope of use of liquid crystal panels has been further expanded, and its industrial effects have been enormous.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the main structure of a film-like liquid crystal display element according to an embodiment of the present invention, and FIG. 2 is a sectional view of the same element.
FIG. 3 is a plan view showing the main structure of a conventional liquid crystal display element;
FIG. 4 is a sectional view of the same element. 11.11'...Film substrate, 12,12°
......Transparent electrode, 13...Sealing agent, 1
4...Liquid crystal, 15...Panel outer periphery,
16... Conductivity electrode, 17... Extraction electrode part, 18... Spacer 19...
- Routing electrode.

Claims (1)

[Claims] A panel is constructed by encapsulating a liquid crystal in a pair of film substrates on which transparent electrodes in a desired pattern shape are formed, facing each other, and an extraction electrode portion connected to an external drive circuit is formed on the outer periphery of the panel, and A film-like liquid crystal display element, characterized in that a conductive electrode for connecting the transparent electrode is provided on a side of the outer periphery of the panel where no lead-out electrode portion is provided.