JPS585720A - Laminated liquid crystal display element - Google Patents

Abstract

PURPOSE:To simplify production stages, to improve reliability and to permit production with good productivity by constituting >=2 sheets of liquid crystal cells on one sheet of common plastic substrate, and bending, joining and laminating this. CONSTITUTION:Electrodes 21A, 21D and provided in respective corresponding parts on one sheet of common substrate 22A. A plastic substrate which has sufficient flexibility, is bendable and prevents disconnection of electrode leads when bent is used for the substrate 22A. Substrates 22B, 22C with other electrodes 21B, 21C are disposed on this substrate 22A, and are sealed with sealing materials 23A, 23B, 23C, 23D. Plastics, glass, etc. are used for two sheets of these substrates 22B, 22C. The outside surfaces of the substrates 22B, 22C which are produced in this way and are bent roughly from the center are joined by means of adhesives to make laminated construction. It is also possible to form two layers of liquid crystal display elements wherein the common substrate of plastics is joined on the outside surface thereof by bending these oppositely from this.

Description

DETAILED DESCRIPTION OF THE INVENTION The present AAA is a nine-layer liquid crystal display device using a plastic substrate.

2JIIIL upper O case crystals are formed and the upper layer display height can be shown as complex 1*. It has the advantage of being able to provide multi-colored, high-contrast display and visually appealing display, and its use has been increasing in recent years.

Typical examples of such laminated liquid crystal display elements are known: a two-layer board, a two-layer board with four substrates, and a two-layer board with five substrates.

S1 Zusha is a definitive explanatory diagram of a two-layer example of this four-board board.

Note that all figures, including those below, are exaggerated in the thickness direction for clarity, and the actual thickness of the electrodes and liquid crystal layer is extremely thin compared to the thickness of the substrate.

This type of two-layer liquid crystal display element is basically formed by bonding two liquid crystal display elements, and has electrodes (I
A) Substrate with I (IB) (2A) e (2B)
A crystal display element formed by sealing with a sealing material (S included), (5B), and a substrate (2(ri) having electrodes (1c) e (1D), (2D) sealed with #(sc), (so )
It is possible to bond the crystal display elements that are sealed together with adhesive (4), and simply put the two liquid crystal display elements together.
%0.

In this example, the electrode IIIL extrusion is usually on the substrate (2B)
The end of the earthen floor (5B) and the lower end of the base (2C) (5C)
K11ff was used, and two connectors were required for connection to the external circuit. To do this with one connector, on the other hand, in order to form an electrode extraction part only on O#I, K is
A transfer that crosses the substrate in the thickness direction is required, and obtaining a transfer with good sound ray properties is a serious problem that requires adding one or more layers.

Further, FIG. 2 shows an example of three substrates, with the center substrate being slightly larger.

In this example, the stop substrate (12A) and the lower substrate (12C) have 1IK electrodes (11*) and (110), and only the center substrate (12B) has electrodes (IIK) on both sides.
B).

(11C) is written. Each board is coated with a sealant (13
A) I (13B), (13C), (13D)
It is sealed with.

In this structure, the OXX extremely small output portion is usually provided at both II (15B) and (1sc) K at the end of the center board, and two connectors are also required.

All of these conventional laminated liquid crystal display elements require two protruding parts for the electrodes, and in order to combine them into one, a hole is made in the substrate or a transfer process is required to remove the outer wall of the substrate. 11 had the disadvantages of complication, low reliability, and a downward trend.

The present invention prevents such defects and concentrates the protruding portions of the electrodes on one substrate.69 In a laminated liquid crystal display element using at least one plastic substrate, one common plastic substrate This is a laminated liquid crystal display element in which two or more liquid crystal cells are formed on a substrate, and the cells are bent and joined to form a laminated structure.

The liquid crystal display element of this company uses one common substrate as a plastic substrate and folds it, so it is possible to
You can concentrate one lik on the 1jlE protrusion, and there is no need to form a transfer on 1 rather than buying too much a board.

Furthermore, since a large number of laminated liquid crystal display elements can be manufactured at the same time, it is possible to manufacture them with higher productivity than conventional single-layer liquid crystal display elements.

Next, I will explain in detail the laminated liquid crystal display element of this book based on the spacing. be a man

wtsvit is an original story about two-layer O*A display elements.
*asii"c' included, 114111t'i, fold-11
This is a diagram of the Kodangan theory.

On the common group II (22A) of one sheet O, electrons 1i (z1*), (21r)) are placed at mutually opposite positions m.

This group 4N#'i is made of a plastic substrate having sufficient l1JII properties, and is foldable and does not cause the electrode lead to break when it is folded. Specific examples of the material include polyester, cellulose acetate, acrylic resin, and materials that are foldable and have sufficient strength. This 011 pole is a normal I
TO and other materials that form a long beak electrode can be used, and if necessary, metal leads and a reinforcing layer with a metal overcoat can be formed on the folded part. Even if an overcoat is installed to prevent the lead from deteriorating due to hot air, etc., it will not work. When 4111K becomes smaller than 41, care must be taken not to cause wire breakage. Depending on the requirements, the INK cutout on the opposite side of the plastic substrate may be set or renamed.

On this substrate, other electrodes (21B), (21C) and village substrates (22B), (22C) are arranged, and the seal@
(25k)*(2!IB), (2ic), (250
) is sealed.

These 2& substrates (22B) and (22C) may be made of plastic or glass, and the thickness 4 may be selected as appropriate.

The product manufactured in this way is folded almost from the center and the outside of the substrate (22B) and (22C) is coated with WjjJK adhesive (
24) to form a two-layer wave crystal display element exhibiting an irises of 4 mK.

On the other hand, it is also possible to fold the display element in the opposite direction and to form a two-layer O1 crystal display element by bonding the plastic O common substrate to the outside thereof.

This is an example of manufacturing multiple 02-layer liquid crystal display devices at the same time, and a common O11M board (
31) Upper o 2 + FIfi K&1M (52B)
, (32C) are linked together. This is (5
6A).

It is cut at the arrows (34B) and (5ac) to form each element. This disconnection takes 4JL even in front of the Deaf House and after the prayer connection.

This is an example of mtHli, s layer, and a common plastic substrate (45A) and base'l (43B), (43C),
(43D), there are five layers. In this S-layer OIE crystal display element, the electrode deposition 11I can be carried out only from the negative member (45A) of the substrate (IA).

In addition, the threshold transfer between the common plastic substrate and the fake substrate may be the transfer used in over-voltage single-layer liquid crystal display elements, and any transfer within the play, inside the seal, or outside the seal is acceptable. .

1, these substrates contain at least the last - group I
[Other than that, each is required as a board! have the desired electrodes according to the

These substrates may contain B i O@, Ala
(Undercoat layer such as ls, etc., O/(
- Even if it has a coating layer, it is true, and the electrodes are also multilayered and have 4 layers, and it also has an alignment layer for fixed display and a printed shield part, which is 4 pages long.

In addition, when a color filter, a color polarizing plate, a polarizing plate, and a K wavelength plate are laminated, a reflective electrode, a reflective plate, and a transmissive reflective plate are provided when used as a reflective body.

Various known liquid crystals are used for the liquid crystal layer of the double-layered liquid crystal. If the quality is high, the same or different liquid crystals are injected into each layer. In addition, the injection of liquid crystal can be performed in the third garden state, Natsume<, or JII4WA state.

A specific example of the liquid crystal injected into this multi-layer liquid crystal layer and L7,
If you keep it, all 1 peta electrode 01st layer and desired display pattern will be used! By injecting layer VC'raii crystals, it was possible to perform self-rebellion.
One is injected with a guest-host liquid crystal with a different pleochroic color volume to improve contrast, and the other is injected with two types of guest-host liquid crystal with two types of pleochroic dyes each one larger in size to enable two-color display. There are things that have been done.

These large numbers of liquid crystal layers are provided with electric lights, full-face peta, cursive segments, dot matrix, and various figures II.
I do not have to think about it, but it can be used selectively as needed.In the present invention, the effect can be increased by common wiring of the electrode leads of a plurality of layers.

For example, to drive an 8-digit character segment, KFi%D
So, 27 wires of 5 + 5 x 8 wires are required, and 54 wires of 211 of 7 are required in the 2nd layer, and in the case of this kuji segment wire, if the duty ratio is increased, the wiring becomes significant [-
<Overcharge % DJ to complicate! It is used under Il.

On the other hand, in this case, IAk can be set to D, and all the wiring can be completed with K, 4 + 1 x 8 - iso electrode terminals.

If this is a 20-character dot matrix O field, then Q is 8+
5X20 = 216 pieces, which is twice the number of 108 lines, and 31ii of the present invention
In D, it becomes a large roof with 116 14+5x20 dews.

Furthermore, the same pattern for the purpose of improving contrast,
In the case of a two-layer guest-host liquid crystal display element made of the same liquid crystal, the structure of the present invention requires exactly the same number of terminals as in the case of a single layer.

In the present invention, for example, at least one of the substrates can be made of a glass substrate to improve **, all of the substrates can be made of plastic substrates to provide flexibility, and the last substrate can be made of a yaki-resistant substrate. Alternatively, it is also possible to use a flat threshold body and a light guide 4[III, and it is also possible to use a polarizing plastic substrate instead of a plastic substrate.

Further, sealing materials, barriers, transfers, and spanners can be selected as appropriate or used as necessary.

Also, as a round adhesive for joining multiple liquid crystal cells,
Ordinary resin adhesives, pressure-sensitive adhesives, etc. can be used, and N8 bonding may be used to prevent movement by mechanical means.

In this way, the present invention is capable of reducing the number of electrode protrusions by one, making it easier to connect with external circuits and reducing productivity, and can be applied to various patterns in the future. It is something.

[Brief explanation of the drawing]

111 and FIG. 2 are explanatory diagrams of a conventional two-layer wave crystal display element, and FIGS. 3m to 6 are explanatory diagrams of a multilayer wave crystal display element of the present invention. Electrode 22A:
plastic substrate

Claims (2)

[Claims] (1) In a laminated liquid crystal display device that uses at least one plastic substrate, two or more crystal cells are constructed on one common plastic substrate, which are folded, welded, and laminated. A multilayer liquid crystal display element with a structure. (2) One end of the common plastic substrate is not cut out and is used as a lead extraction part, and the leads of all O-cell crystal cells are taken out from the opening. Scope of claims - Assignment 11m stated O
Experimental liquid crystal display element.