JPS58137880A - Stereo display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display that does not have a mechanical drive unit and can perform stereoscopic display by electrical drive.

It can be used for various purposes in a display body made by sandwiching an electrochromic (hereinafter abbreviated as F%EC) substance between transparent electrodes, which undergoes a reversible oxidation-reduction reaction and colors when a voltage is applied. Attempts have already been made, for example, to
It is reported in No. 2-46098. I of this nature No. 11852-46098 on 1F#! The O display is useful in that it can be used as a transmissive display element that becomes colorless and transparent when decolored. This display body is made up of a transparent electrode layer (cathode), a tungsten dioxide thin film, an insulating film such as silica dioxide, and a transparent electrode layer (anode) that are laminated in this order. Tungsten oxide (W
O3) The thin film is colored blue. Thereafter, when a reverse voltage is applied to this display, the t-color of the WO3 thin film disappears and the display returns to its original colorless and transparent state. Although the mechanism of coloring and decoloring has not been fully elucidated, it is known that the small amount of water that enters the WO, thin film, and insulating film controls the coloring and decolorization of WO3. . The reaction formula for coloring is estimated as shown in 1.

1t20-1→'ii"+0H- (wo, jll-anode side) wo + nH+ no +-+HnWO3 colorless and transparent blue (insulating aI proverbial anode III) 20H-1 inch H, O+3.0.↑10e- Therefore, this Disadvantages of display materials such as: (1) during the coloring reaction, the water content is consumed by an unfavorable side reaction of oxygen gas generation, and (1) water is not produced by the reverse decoloring reaction.
Repeated coloring requires replenishment of water from the atmosphere. In particular, due to the latter reason (2), the display body of tie 1 has the disadvantage that the SM property of coloring is affected by moisture in the atmosphere.

Mochi Chika, the amount of water in the tray equal to the amount of water consumed by the coloring reaction is generated by the decoloring reaction, and therefore coloring and decoloring are repeated without the need for water supply from the outside world. It can be returned, and the colored dark color that is repeated only 4 times is transparent and is not affected by the outside world.
HO display body was proposed (%Kaisei 52-73749Jl
! f Publication Reference). This display body basically consists of transparent electrodes,
An electrolytic reduction color forming thin film such as WO3, an electrolytic oxidizing thin film such as Cr, O5, and a counter electrode tII laminated. Furthermore, according to the disclosure in the above-mentioned publication, when the voltage is applied and the voltage is removed, the coloring gradually becomes m-colored due to spontaneous discharge, and the property that the coloring is preserved even after the voltage is removed ( This is called memory property)
In order to provide this display, it is necessary to provide a thin film of eg silicon dioxide, magnesium fluoride, etc. at any position between the transparent electrode and the counter electrode. According to the inventors' speculation, this insulating film is not a good conductor of electrons, but it is a good conductor of protons (kl'').
It is an ionic conductor that allows free movement of hydroxy ions (0''), and this insulating film has electrolytic reduction coloring properties.
- and the electrolytically oxidized thin film is sure to dazzle! I'm worried.

According to the first Japanese Unexamined Patent Publication No. 52-73749, a pattern is displayed before any electrode tm image pattern 7 is formed on the display body. In addition, the applicant's patent application 1
According to the invention of No. 855-82109, g
By patterning only either the o+- or oxidized color-forming EC layer and applying a uniform medium voltage, a pattern display is made. It is possible to invent a new three-dimensional display by stacking a large number of type GA display bodies so that the desired three-dimensional image is expressed when the colored patterns of each display body are laminated.

That is, the present invention provides a display consisting of a large number of laminated gap display sheets such that the laminated proboscis of the colored pattern constitutes a three-dimensional shape to be displayed, such as a triangular lamp, a rectangular square, a sphere, etc. .

Next, the present invention #4 will be explained in a different manner by way of examples with reference to Figure itl.

Example 1 First, a lower transparent electrode (A) is laminated on a transparent substrate.

Transparent electrodes include, for example, sno, ITO (made by one person of 511 & 8 nO on indium oxide, which has good transparency), indium oxide (In, 03), iodide steel, gold, platinum, palladium. , Al Denko 9mu, etc. are used. An electrode layer (thickness of 0.01 to 0.5 μm is sufficient, but if a thicker layer is desired, it may be thicker.) For laminating thin electrodes, vacuum evaporation, sputtering, etc. A known thin film forming technique is used.

Next, 80 reducing layers (uniform or oxidizing GC71 history) are laminated.

Here, examples of the reducible 80 layer (B) include tungsten dioxide and molybdenum dioxide, and among them, tungsten dioxide is preferable. Peel oxidizing ga4(p) or urinary oxides such as iridium hydroxide, nickel hydroxide, ruthenium hydroxide, rhodium hydroxide, chromium hydroxide can be used, but these hydroxides riIi
Since it is not possible to perform contact vacuum evaporation, the corresponding metal is first vacuum evaporated, and after patterning, the hydroxide (
It is converted into a hydroxide (an EC substance) by oxidation with a II polar acid.

(→Reducing EO layer and ψ) The thickness of the oxidizing GO layer is usually 0.001 to several μm thick.

Next, the laminated layers (B) III or CD) are patterned into a triangular shape as shown in FIG. 1 by photo-etching.

After that, an ion conductor layer (C) is laminated. As such an ion electric body (C).

(a) Contains a small amount of water, so it has electronic insulating properties, but exhibits one-on conductivity, such as tantalum oxide (TagO,)
% wk conversion = , t fuCMb, 0IS), II conversion #""":' A (Zr0t;i), oxide teta7 (TiejI), oxidation hafnim9 (MfO,),
Yttrium oxide (y, o3), lanthanum saponide (L-0
3) Inorganic solid substances such as silicon oxide (810,), magnesium heptadide, and zirconium phosphate.

(b) Solid electrolyte...For example, BυP, I
J-At, O,, β-hydroxyethyl acrylate and 2-
Examples include copolymers of acrylamide-2-methylglobansulfonate, hydrous methyl methacrylate copolymers, and the like.

(C) If the layer is water or ion-containing synthetic resin, (B)
It is also possible to use the same adhesive for layer and (9 layer). In this method, (M) to (B) laminated product and (→ to <E) laminated product are prepared separately in advance, and both An EC element is manufactured by a method of sandwiching the (C) layer.This method is detailed in the specification of the applicant's application No. 56-984114.In this case, (
C) A skin thickness of approximately 0.1 to 1000 μm is sufficient.

(C) Layer t- It is preferable to use (A) for the purpose of widening the thickness, and in this case, the thickness is o, no.
It is possible to thjf-. (C) The layer must be as transparent as possible.

Next, the remaining (9 layers or (D) layer) is formed,
After that, the upper electrode 1k (II) is laminated. Top ′
As the electrode (1), the same electrode as the lower electrode (A) is used.

In this way, the transparent g that can display the same pattern as in Figure 1
An io display body (1) is obtained. H This display body (1) K
When a voltage of about 1 to 2 volts is applied with the electrode in contact with the external power source as the cathode and the opposite side as the anode, it becomes colored in a real color in about 100 to 2505 seconds,
This colored butter remains in memory even when the voltage application is stopped. In this case, if a similar or slightly smaller reverse voltage is applied,
The display pattern becomes colored and disappears in about half of nine hours, returning to its original colorless and transparent state.

Similar to this display (1), make a number of slightly smaller display bodies with similar colored patterns, and put them together in order from C to (n) with a transparent thin electrical insulator in between. tI
(See figure g2).

When a coloring voltage is applied to each display element in the thus obtained display gray of the present invention, a triangular pyramid is displayed at K when viewed from the direction of the arrow in FIG.

In some cases, a transparent layer may be provided between each MO@ display, and each EO display may be stacked in the following manner: anode - cathode / cathode - anode / anode - cathode / cathode - anode···
By combining every other electrode, adjacent electrodes of the same polarity may be made into one common electrode.

Further, the shape of each EC display body is not limited to a square as shown in FIG. 1, but may be any shape such as an ellipse, circle, broad bean shape, or triangle.

Note that the display of the triangular pyramid shown in Fig. 3 is not colored entirely at once, but a display method in which the EC display bodies of each layer are colored sequentially from paper feed toward the apex, or in the opposite direction. May be adopted. In this case, dynamic display becomes possible.

Example 2 A three-dimensional display display in which a small sphere can be displayed on a shell f111 and a fractional stock is created, and a similar display in which the display sphere's position in the display gray is slightly shifted is continuously displayed. Overlap many.

In this way, the three-dimensional display Disgray is created by sequentially changing the display timing of each sphere slightly, so that the spheres fly in a curve from the back to the front in the space of the display. Looks like it's coming. This situation is conceptually illustrated in FIG. 4.According to the present invention, it is possible to obtain a disk gray that can be statically or dynamically fitted with a three-dimensional T-fit only by electric drive without a mechanical drive unit. In the embodiments described above, only pre-designed three-dimensional images are displayed, but if an EO display capable of displaying a free shape using dots and matrix can be obtained, something like a three-dimensional television can be obtained.

[Brief explanation of drawings]

FIG. 1 is a display pattern diagram of one EO display used in Example 1 of the present invention. The second figure is a horizontal explanatory view of the display manufactured in Example 1. FIG. 3 is a conceptual diagram illustrating how the display gray of the first embodiment displays an inverted triangular pyramid. FIG. 4 is a conceptual diagram illustrating how the display of Example 2 displays spheres one after another in color.

Claims (1)

[Claims] A transmissive electrochromic display material in which a three-dimensional object to be displayed is divided into a large number of cross-sections, each of which has a cross-sectional shape as a colored pattern, is laminated so that when the respective colored patterns are laminated, the three-dimensional object is formed. A three-dimensional display featuring