JPS589428B2 - Hiyojisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device, for example, overflow memory, number of memory calls, number of operation results, etc. of a small electronic computer.
The purpose is to enable various information such as battery consumption status to be clearly displayed on a single display device.

As a means for achieving the above-mentioned object, the present invention consists of an information pattern such as characters, symbols, figures, etc. and a background made of color-changeable materials, and displays various types of information by combining the various changing colors of the two. The color of the background area corresponding to and overlapping the information pattern area is not changed.

As the color-changeable material, for example, an electrochromic substance can be used.

This substance is a substance that develops (or changes color) when electricity is applied to the substance or in combination with an appropriate electrolyte, and whose color disappears when electricity of opposite polarity is applied or/and heating (electrochromy phenomenon). , many inorganic and organic types are known.

For example, it is mentioned in British Patent No. 1186541.

Table 1 at the end of this section is an example of organic substances.

The above-mentioned color development is not limited to one color, but may change to various hues depending on the voltage value.

Tables 2 and 3 are examples. Further, once an electrochromic substance has developed a color, it has a property (memory property) that even if the electricity is turned off, the color state remains unchanged for several months, for example.

In addition, liquid crystal substances can also be used because they have the property of coloring and fading as described above.

Among liquid crystal substances, cholesteric liquid crystals (electrodes, for example, made of transparent Sn
O 2 and Ta) etc. also have memory properties.

Transparent colored materials such as colored glass and colored cellophane can also be used in the present invention because they appear vividly colored when viewed under transmitted light and can be clearly distinguished from other colors.

First, we will discuss an example of a display device in which information patterns such as characters, symbols, figures, etc. and the background are made of color-changeable materials, and various types of information are displayed by combining various color-changing colors of the two. This will be explained using Figure 3.

FIGS. 1 and 2 show an example of the structure of an arithmetic operation display board for a desk-top electronic computer, which consists of a circuit board 1 on which so-called figure-eight segments 4 for displaying numbers are arranged in the required number of digits.

The substrate 1 has a two-layer structure in which selenium is deposited to a thickness of 700 mμ on the surface of a 0.5 mm thick transparent glass plate 2 (deposition conditions: degree of vacuum 2×10 −6 Torr, substrate temperature 40° C., deposition rate 200 Å/soc).

This substrate 1 appears red when viewed through light, but appears almost black when viewed without light through.

As is well known, the figure 8 segment 4 can represent the numbers 0 to 9 by appropriately selecting and combining seven unit segments 41 to 47. In this embodiment, each unit segment 41 to 47 is It is constructed by interposing an electrochromic substance 7 between transparent electrodes 5 and 6.

The transparent electrodes 5 and 6 are composed of a vapor-deposited film of indium oxide (electron beam evaporation equipment used: vacuum degree 5X10-7T)
orr・output 0. 2 5 KW-board distance 20cr
n-film thickness 1200A).

The electrochromic material layer 7 consists of a coated and dried layer (thickness: 150 μm) of a mixture of promophenol blue dissolved in an acidic solution (pH approximately 5.5) and polyvinyl Rubazole in a weight ratio of 100:200.

Each unit segment 41 to 47 of the figure 8 segment 4 above
appears white when no voltage is applied between the electrodes 5 and 6, and appears blue due to coloring of the electrochromic layer 7 when a voltage of approximately 6 V is applied.

8 is an acrylic resin overcoat layer (transparent) provided to protect the display panel surface.

Then, the display panel A having the above configuration is attached to a computer.

In this case, a lamp device 9 is arranged on the back side of the display board A,
In addition, the figure 8 segment 4 of each digit is connected to the arithmetic circuit of the main body of the computer, and the necessary unit segments 41 to 41 are determined by the arithmetic signal.
A voltage of 6 cm is applied between the 47 electrodes 5 and 6 to cause the electrochromy layer 7 to develop color so that the figure 8 segment 4 of each digit displays a required number.

According to the display board A, the following four pieces of information can be displayed, for example.

That is, (1) a positive arithmetic number is displayed by not lighting the lamp 9 (therefore, the background is black) and by coloring the figure-eight segment 4 of each digit (therefore, the display pattern is blue).

(2) A negative operation number is displayed by lighting the lamp 9 (therefore, the background is red) and coloring the figure-8 segment 4 of each digit.

(3) Turn on the lamp 9 and turn on the figure 8 segment 4 of each digit.
By not coloring (therefore, the display pattern is white), it is indicated that the calculated display number is overflow.

(4) Figure 8 segment 4 of each digit without lighting lamp 9
It also lets you know when the battery is low by not producing any color.

Incidentally, once the electrochromy layer 7 has developed a color, the color is maintained as it is even if the voltage is subsequently turned off, so that the power source can be saved.

Decoloring can be achieved by applying a voltage of opposite polarity to that used during color development.

When cadmium sulfide is used as the vapor deposited layer 3 of the substrate 1, the transmitted light of the substrate 1 becomes yellow to orange.

Further, the substrate 1 may be simply made of colored glass, a colored synthetic resin plate, or the like.

It can also be constructed using an electrochromic substance.

An example of hair lectrochromy substance? For example, by using a device that develops various hues depending on the voltage value as shown in Tables 2 and 3, a large amount of information can be displayed on a single display board.

In FIGS. 1 and 2, an electrolyte may be used in place of the electrochromic material layer 7, and the electrodes 5 and 6 may be composed of metal oxides.

This is an example in which the so-called electrode material is composed of an electrochromic material.

Figure 3 shows a modification of the display board in Figures 1 and 2.
The substrate 1 is constructed using an electrochromic material.

That is, two sheets of Nesa glass 10 and 11 are placed facing each other with their electrode surfaces 12 and 13 facing each other, and an electrochromic substance 5 mixed with an electrolyte is interposed therebetween to form the substrate 1.

14 is Su? It also serves as a sealing material.

A transparent electrode 15 is formed on one surface of the substrate, and an electrochromy material layer 5 having a different color from the electrochromy material 5 is formed thereon to form a figure-eight segment pattern on the surface of the transparent plate 16. A transparent electrode layer 17 formed thereon is placed over the surface of the electrochromic material layer 5 with the electrode surface in contact with the surface.

18 is a spacer and a sealing material.

This display board differs from the one in Figures 1 and 2 in that a voltage is applied between the electrodes 12 and 13 of the substrate 1 to color the substrate 1 (background), and the rest is the same as the one in Figures 1 and 2. It can be used in

By the way, in the display devices shown in the examples shown in FIGS.
, 17, the figure 8 segment portions 4, 47
, 17 and the color of the substrate 1 is mixed with the color of the substrate 1.

That is, the clarity of the information pattern display is impaired.

The present invention has further improved this point, and FIG. 4 shows an example of a configuration in which the above-mentioned disadvantages of the example shown in FIG. 3 are solved.

That is, no electrode layer is provided on the electrode layer 12 (or 13) portion 12' on the substrate 1 side corresponding to the figure-8 segment portion 17.

Figure 5 shows another modification of Figures 1 and 2, in which only one electrochromic layer is used, making it possible to combine the text color and background color. An electrochromic material layer 21 is formed on the electrochromic material layer 20 .

As this material layer 21, a material whose hue changes variously depending on the voltage value as shown in Tables 2 and 3 is used.

A background transparent electrode 22 and figure-8 segment transparent electrodes 231 to 237 are formed on the surface of the layer 21.

However, the electrodes 22, 231-237 are separated from each other by a gap 24 or an insulator.

By varying the voltages applied to the background transparent electrode 22 and the figure-8 segment transparent electrodes 231 to 237, the electrochromic material layers corresponding to both portions are colored differently.

That is, as shown in the examples of FIGS. 4 and 5, the information pattern area 41 to
By configuring so that the color of the background area that overlaps and corresponds to 47.17 is not changed, mixing of the background color with the color of the information pattern is prevented, and the information patterns 41 to 47, 17 are displayed vividly and clearly. can be done.

The relationship between the characters and the background in the illustrated example above can also be made to correspond to the key tops on the keyboard of a desktop electronic calculator and the front panel board that is the background. One key and a numeric key are used, and when the background (front panel board) is white, pressing that key will input a numeric signal, and when the background is red, the SI
It can be configured so that it is input as an instruction command signal of an n function.

In this case as well, the power consumption is naturally only when the light is turned on, making it possible to manufacture a desk calculator extremely economically.

Typical methods for forming an electrochromic material layer include vacuum evaporation, sputtering, and CVD (Chemical).
It is an abbreviation for al vapor deposition, and is known as a method of performing vapor phase growth by decomposing or reacting a chemical substance), spraying, coating, screen printing, etc.

Vacuum evaporation and sputtering are suitable for forming transmission-type thin films, while CVD is advantageous in that it can form large-area layers that can be used to form a wide range of layers from thin to thick films, and can produce scattering properties. .

Although an example using an electrochromic material has been shown above, a liquid crystal material can also be used in the same manner.

[Brief explanation of the drawing]

1 and 2 are a plan view and a cross-sectional view of essential parts for explaining the configuration of an example of a display device that changes the color of the background, FIG. 3 is a cross-sectional view of another example of a display device, and FIG. 4 FIG. 5 is a cross-sectional view of the first embodiment of the device of the present invention, and FIG. 5 is a perspective view of main parts of the second embodiment. 1 is a substrate, 4 is a figure-8 segment, 5 and 6 are transparent electrode layers, 7 is an electrochromic material layer, 8 is a transparent protective layer, 9
is a lamp.

Claims (1)

[Claims] 1 Information patterns such as letters, symbols, figures, etc. and a background are made of color-changeable materials, and various types of information are displayed by combining the various changing colors of the two, and a background that overlaps and corresponds to the information pattern area A display device configured so that the color of the area does not change.