JPS609768Y2 - display element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display element using electrochromic technology, and is particularly intended to enable display to be viewed from all directions and to provide a simple structure.

Hereinafter, a display device according to the present invention will be described with reference to the drawings.

In the present invention, a transparent tube body, for example, a glass tube body 1 is provided as shown in FIGS. A rod 3 is inserted, and a linear counter electrode 4, in this example two Am wires, is stretched along the longitudinal direction inside the tube body 1, facing the transparent electrode 2 of the glass rod 3.

In this state, an electrochromic (EC) solution 6 is filled into the glass tube 1 and both ends are sealed to form an electrochromic (EC) display element 5.

In this case, the transparent electrode 2 and the counter electrode 4 are each led out of the tubular body 1 so that a desired voltage is applied between both electrodes 2 and 4.

Further, the glass rod 3 is arranged in the tube body 1 so as to be biased to one side in order to facilitate manufacturing.

As an EC solution, viologen (o, IM), KNO
3 (0,1M), Na25O3 (0,1M) and 4
Fe3(CN).

(0,1M) solutions can be used.

The operation of this configuration is such that when a required voltage is applied so that the counter electrode 4 is positive and the transparent electrode 2 is negative, a color is deposited on the transparent electrode 2 side and displayed.

Conversely, if a voltage is applied so that the counter electrode 4 is negative and the transparent electrode 2 is positive, the color display disappears.

In reality, there is colored precipitation around the counter electrode 4, that is, the Au wire, but because the Au wire is thin, it cannot be discerned at all with the naked eye and is in a transparent state.

Furthermore, even if the application of voltage is stopped after the display state (on state), the display is memorized and continues to emit color.

To erase this memorized display, apply a voltage with the polarity reversed.

The size of the display element 5 can be arbitrarily selected.

- As an example, the dimensions of the glass tube 1 are outer diameter 3, oWgIL
, an inner diameter of 1.5771171 mm and a length of 3 mm, the outer diameter of the glass rod 3 is 1.0 to 1.2 mm, and the Au thin wire serving as the counter electrode 4 is a thin Au wire for semiconductor device wire bonding with a diameter of 50 IL. The display element 5 can be configured in this way.

The operating voltage range is 0.7V to 2.5V, preferably 1.2V to 1.5V.

By arranging such display elements 5 independently one segment at a time, an 8-shaped display as shown in FIG. 3, for example, can be easily constructed.

According to the EC display element 5 having such a configuration, the visual characteristics for the display are 360 degrees, and the display can be seen from any direction.

Further, the display element 5 can be easily manufactured in any size.

Furthermore, in the case of a conventional EC cell, a display electrode pattern is formed on the surface of a nail containing an EC solution to form, for example, an 8-character display element, so there is a lot of waste of the EC solution.

However, in the present invention, a desired display device can be obtained by using rod-shaped display elements 5 and arranging them in a desired pattern, so that there is no waste of EC solution.

Incidentally, FIGS. 4 and 5 show other examples of the present invention.

That is, in FIG. 4, a transparent electrode 2 is placed on the surface in the center of the glass tube 1.
A glass rod 3 having a
This is a case where the structure is filled with C solution 6.

This structure requires a special jig during manufacturing to hold the glass rod 3 in the center of the glass tube body 1, and is made on the surface side compared to the cases shown in Figs. 1 and 2, but the display is Omnidirectional (3
60 degrees), it is always located at the center of the glass tube and has the advantage of being easy to see.

In FIG. 5, a transparent electrode 2 is adhered to the entire inner wall surface of a glass tube 1, a counter electrode 4 made of thin Au wire is placed in the center of the tube 1, and an EC electrode is placed inside the tube 1. This is the case where the solution 6 is filled.

With this structure, the display can be viewed from all directions as in FIG. 4, and the display is not biased in all directions and is centered, making it easy to see.

As described above, according to the present invention, it is possible to obtain an EC display element that allows the display to be viewed from all directions, has a simple structure, and can be made into any size, thereby expanding the uses of EC display devices. .

[Brief explanation of drawings]

1 and 2 are a cross-sectional view and a perspective view showing an example of the display element of the present invention, FIG. 3 is a plan view showing an 8-shaped display pattern obtained by arranging a plurality of display elements of the present invention, and FIG. 4 and FIG. 5 are sectional views showing other examples of the present invention. 1 is a transparent tube body, 2 is a transparent electrode, 3 is a glass rod, 4 is a linear counter electrode, and 6 is an EC solution.

Claims (1)

[Scope of utility model registration request] A transparent tube is filled with an electrochromic solution, and a transparent rod having a transparent electrode formed on its surface is inserted into the tube, or the transparent electrode is formed on the inner wall surface of the tube, A display element comprising a linear counter electrode provided inside the tube along the longitudinal direction of the tube.