JPS58100830A - Picture display method - Google Patents

Abstract

PURPOSE:To display pictures having excellent reliability with respect to a device for displaying pictures of good quality with high image resolution by heating the plural points of a liquid layer to generate foam in the respective heated parts and forming plural picture elements thereby assembling these picture elements. CONSTITUTION:For example, row conductors 22-2 and line conductors 23-3 are selected, and when voltage is applied to both of these conductors, electricity is conducted to a part to a resistance layer 21 corresponding to the intersecting parts 24 of both, by which said layer is heated and foam is generated. In other words, it is possible to generate foam by heating the plural intersecting parts of the optional lines and rows simultaneously. Observing light 7 arrives at the observing eye 6 by producing a difference in optical path, that is, a difference in the quantity of light between the case in which said light passes through the foam and the case in which the light does not pass through the foam in the stage when said light passes through a transparent protecting film 5 and a thin liquid layer 2. Thus, plual picture elements are formed according to the foam, and pictures of good quality are formed by assembling these.

Description

[Detailed description of the invention] The present invention relates to a novel image display method and display device.

Currently, cathode ray tubes (so-called CRTs) are widely used as terminal displays in various office equipment and measuring instruments, or as displays in televisions and video camera monitors. However, in terms of image quality, resolution, and capacity, this CRT uses silver halide or electrophotography.
- There are still some people who are dissatisfied with the fact that it has not reached the V-bell level of Docobee. In addition, as an alternative to OR and T, attempts have been made to put a so-called liquid crystal panel into practical use that displays a dot matrix using a liquid crystal. I haven't been able to find anything satisfying sexually.

Therefore, an object of the present invention is to solve the problems that could not be solved by the conventional techniques in this technical field.

In other words, the object of the present invention is to provide a method for displaying high-resolution, high-quality images.11. Another object of the present invention is to provide a novel display device that has high drivability, productivity, and reliability, and has high-density, disordered pixels.

Hereinafter, the present invention will be specifically explained in detail according to illustrated examples.

One of the principles of image formation in the present invention will be outlined with reference to FIGS. 1 to 8.

In the figure, 1 is a radiation absorption layer, 2 is a liquid thin layer, and 3 is a transparent protection plate.
A display element shown in the schematic cross-sectional view) is constructed. At this time, the radiation absorption layer 1 is a colored (preferably black) film that efficiently absorbs radiation, especially infrared rays, and is made of various inorganic or organic materials that are difficult to melt. can get.

If the absorbing layer 1 itself lacks a supporting function, it is desirable to add a radiation-transparent supporting plate made of glass or plastic (not shown).

The liquid constituting the thin liquid layer 2 can be roughly classified optically into 1) a translucent liquid, 2) a colored liquid, and 2) a cloudy liquid. The basic composition of this liquid is water or various organic solvents used alone or in combination.

Specific examples of the organic solvent include methyl alcohol, ethyl alcohol, n-7' alcohol, 7' alcohol, n-methyl alcohol, and 5e.
c-jf alcohol, tert-methyl alcohol,
Alkyl alcohols having 1 to 4 carbon atoms such as isobutyl alcohol; amides such as dimethylformamide and dimethylacetamide; amines such as triethanolamine and jetanolamine; ketone or keto alcohols such as acetone and diacetone alcohol; tetrahydrofuran , ethers such as dioxane, polyalkylene glycols such as polyethylene glycol, polypropylene glycol; ethylene glycol, propylene glycol,
Fuchile 7g IJ call, hexylene glyco.

alkylene glycols in which the alkoxy group has 2 to 6 carbon atoms, such as diethylene glycol; glycerin; lower alkyl of polyhydric alcohols such as ethylene glycol methyl ether, diethylene glycol methyl or ethyl ether, and triethylene glycol monomethyl (or ethyl) ether; Examples include ethers.

In addition, the above-mentioned colored liquid refers to various dyes,
It refers to colored liquids (including black) obtained by dissolving or dispersing pigments, and cloudy liquids refer to light-diffusing fine particles (whether they are solids or not) in the liquid on paper. A white or light-colored liquid obtained by dispersing .). The thickness of the liquid thin layer 2 explained above is generally such that the amount of transmitted light is approximately half or less of the amount of incident light.
1 μm to 100 μfrL) is desirable. Furthermore, at this time,
It is not necessary that the amount of transmitted light be reduced over all wavelengths in the visible range. In other words, it may be a reduction in part of wavelength light in the visible range. Further, this decrease in the amount of transmitted light may be caused by either absorption or scattering of light.

By the way, it is necessary to avoid liquid having the same color as the absorbing layer 1. This is because the contrast between the image area and the non-image area may not be maintained, as will become clear from the image forming principle described later.

As the transparent protection plate 3, a light-transmitting (colorless to light-colored) glass or plastic that is as pressure resistant as possible is used. Note that this protection plate 3 may not be used when the display element is arranged horizontally. When the display element of FIG. , the corresponding points on the absorption layer 1 generate heat.

When a portion of the absorbent layer 1 generates heat in this way, the liquid in contact with it is heated by thermal conduction, the temperature of the liquid increases, and eventually it boils, forming vapor bubbles 4 in the thin liquid layer 2. still,
When irradiating the display element with the radiation 5, the radiation 5 can be irradiated in a pattern corresponding to a predetermined image;
A laser light source is used to collectively irradiate a large number of beams in a dot shape using the radiation 5 as a beam, but it is also possible to use a method in which an l beam or a line beam is scanned over the absorption layer 1. However, since it is actually extremely difficult to form vapor bubbles 4 with uniform optical properties over a wide area, the latter method, that is, the method of forming vapor bubbles 4 in a dot shape, is preferable. This can be said to be an advantageous method from a practical point of view.

Further, the direction in which the radiation 5 is irradiated is not limited to the illustrated example. That is, when the transparent protection plate 3 and the liquid thin layer 2 transmit radiation, it is also possible to irradiate the radiation from the left side of the drawing.

A thin liquid layer 2I+' is formed by applying a heat pulse in a diagonal manner.
In the present invention, vapor bubbles 4 are formed in the form of vapor bubbles 4 that are generated from the surface of the absorbent layer 1, grow and increase without detaching from the surface, and reach the protective plate 3. A flat shape that provides a liquid void in layer 2 is effective.

In the present invention, when vapor bubbles 4 are formed in the liquid thin layer 2,
In the first embodiment (when using a translucent liquid), the observation eye 6
Display pixels can be identified based on the difference in the amount of light that reaches them.

In other words, the light reflection on the surface of bubbles in a translucent liquid is originally small, but if the bubbles are minute, the effects of diffraction and bubble curvature appear, and the light scattering effect of the bubbles is reduced. Become big. On the other hand, in a region without bubbles, most of the observation light 7 reaches the observation eye 6 after being reflected or absorbed by some elements of the display element, resulting in the above-mentioned difference in light amount. Incidentally, at this time, the ideal shape of the bubble is a hemispherical shape (it does not matter whether the bubble touches the protective plate or not)
Preferably, the diameter -C is approximately 40 μm.

In the second mode (when colored liquid is used), the area where the bubbles are formed is colored by the absorption layer 1, and the other areas are colored by the liquid. Display pixels can be identified.

In the third mode (when a cloudy liquid is used), display pixels are identified by the appearance of colored parts (...where bubbles are formed) on a white or light-colored background.

In the above embodiment, the time required for the bubbles 4 to disappear is usually about 30 msec, and it is desirable that the time be as long as possible in order to utilize the afterimage effect.

In addition, although the method for forming the vapor bubbles 4 that become display pixels by radiation heating has been described above, in the present invention, the first method is described.
The absorption layer 1 in the figure is replaced with a heat transfer layer made of a metal (not shown), etc.
It is also possible to modify this so that a heating element (not shown) is brought close to or in contact with this to heat the liquid by conduction. however,
In this case, unless specific measures are taken to regulate the direction of heat transfer, there is a disadvantage that display pixels cannot be clearly defined due to heat diffusion.

As shown in FIG. 7 or 8, the display element configuration for implementing the first embodiment described above is such that the interface of the absorbing layer 1 or the interface of the protective plate 3 in contact with the thin liquid layer 2 is It is preferable to use the diffusion surface DP because it can enhance the discrimination effect of display pixels. Further, at this time, the closer the refractive indexes of the material of the protection plate 3 and the liquid are, the more distinguishable the display pixels will be.

In the present invention, in order to further enhance the discrimination effect of display pixels, a white or light color layer is provided between the radiation absorption layer 1 and the liquid thin layer 2.
A light-reflecting or light-diffusing optical film 8 can also be separately interposed. (Fig. 2) Such optical film 8 must be formed of a high melting point metal material or metal compound material that does not melt itself during heat conduction. Also, in the present invention, As shown in FIG. 1, when the vapor bubbles 4 generated in the thin liquid layer 2 do not reach from the absorbent layer 1 to the protective plate 3 (FIG. 3), for example, differences in brightness and color When a difference in power or a difference in hue appears, a certain degree of identification effect of display pixels can be obtained. Furthermore, if you use this positively.

It becomes possible to display intermediate tones.

In the present invention, when the vapor bubbles 4 are generated in the thin liquid layer 2, there is a sudden increase in pressure, so if the thin liquid layer 2 is constructed in a closed system, there is a risk of damage to the display element. strong. Therefore, it is desirable to connect each of the thin liquid layers 2 to an air chamber or an achievator (not shown) to alleviate the increase in pressure in the thin layer 2. Alternatively, as shown in FIG. 4, a pressure absorbing film 9 may be interposed within the display element to absorb the pressure generated in the thin layer 2.

Of course, it is even more effective to use the two methods described above together. The pressure absorbing membrane 9 is made of a translucent elastic material or a highly viscoelastic material, and may also be made of a so-called sponge that contains air bubbles or has ventilation holes.

Further, as a modification of the present invention, the thin liquid layer 2 may be connected to a heating chamber (not shown) and the liquid may be circulated and heated in advance to a temperature close to its boiling point. At this time,
Since the amount of heating and heating time required to form the vapor bubbles 4 can be reduced, it is possible to greatly speed up the formation of the vapor bubbles 4, that is, the display pixels.

For the same purpose, radiation absorption of display elements 1ii1
A heating element layer 10 is provided between the and the thin liquid layer 20 (FIG. 5) or between the radiation absorbing layer 1 and the optical film 8 (FIG. 6), thereby uniformly preheating the thin liquid layer 2. Alternatively, the temperature may be raised to near the boiling point of the liquid/body.

At this time, if the absorption layer 1 or the optical film 8 is a conductor, an insulating layer (not shown) is provided between them and the heat generating layer 10.
It is desirable to provide

In the present invention, the heating element layer 10 (FIGS. 5 and 6) is not necessarily limited to a planar heating element that covers the entire display surface. In other words, this may be a linear heating element or a lattice heating element (both not shown) corresponding to the scanning line of the radiation beam.

At this time, if the radiation irradiation and the heating by the heating element are synchronized, further energy saving effects can be obtained.

Materials for such heating elements include HfB, Si3N,
Examples include metal compounds typified by, etc., and alloys such as nichrome.

Further, in the present invention, a display element structure in which a corrosive component is in direct contact with the thin liquid layer 2 is not possible.

This should be avoided as it will shorten the life of the device. In other words, in a configuration in which a corrosive component is in contact with the thin liquid layer 2, chemical corrosion, electrochemical corrosion, mechanical corrosion due to the cavity 7g/etc., etc. occur, and the element is often damaged.

Therefore, in such a case, it is desirable to completely form a corrosion-resistant protective film (not shown) on the interface between the thin liquid layer 2 and the corrosive component. The material for this protective film is
Metal oxide that is a dielectric (5in2. TiO12, etc.)
Examples include heat-resistant plastic, resin, etc. In the present invention, of course, the optical film 8 may also serve as this protective film depending on its function.

Next, as an application example, the principle of forming a color image will be explained with reference to FIG.

FIG. 9 is a schematic cross-sectional view of a color display element, and except for the color mosaic filter 11 and the reflective layer 12, the other components are the same as those described in FIGS. 1 to 8. elements can be used.

The specific structure of the color mosaic filter 11 and its manufacturing technology have already been disclosed in Japanese Patent Publication No. 52-13094.
Since it is as explained in detail in Japanese Patent Application Publication No. 52-36019, the detailed explanation will be omitted here.

In the illustrated example, when vapor bubbles 4 are formed in the thin liquid layer 2 that is in contact with a portion of the yellow filter (Y), yellow is colored by the reflected light that has passed through this filter. Further, when vapor bubbles (not shown) are formed in the liquid thin layer 2 in contact with the cyan filter part (C), a cyan coloration is observed due to the reflected light passing through this filter. Similarly, when vapor bubbles 4 are completely formed in contact with a portion (M) of the magenta filter, a magenta coloration is observed due to the reflected light passing through this filter.

In this way, on the actual screen, the observer 6 sees pseudo-colors based on the additive coloring method. For example, adjacent Y, 0. When vapor bubbles are formed at M at the same time, the observer 6 will see a white color.

Instead of each of the above filter parts (Y, C, M), a non-light-transparent colored layer (
(not shown), but in either case,
It is desirable to use a material that has good thermal conductivity and excellent heat resistance and impact resistance. Incidentally, in the case where coloring is caused by surface reflection of the pigment layer as in the latter embodiment, the reflective layer 12 is not necessary.

Such a reflective layer 12 is obtained by a metal thin film processed into a mirror surface.

Here, a schematic structural example of another display element according to the present invention will be shown using FIG. 10.

In the figure, numeral 3 indicates a transparent protection plate, and numeral 2 indicates a thin liquid layer, which are elements having the same functions as those explained in FIG. 1. Reference numeral 13 denotes a thermally conductive insulating layer, and a plurality of heating resistance wires 14 and 15 are two-dimensionally arranged on both sides of the insulating layer so as to intersect with each other, sandwiching the insulating layer between them. Reference numeral 16 denotes a support for the heat generating resistance wires 14 and 15 and the insulating layer 13. This element is designed so that vapor bubbles 4 are formed in the thin liquid layer 2 in the area where they intersect only when the predetermined heating resistance wires 14 and 15 are selected and generate heat. It is.

Next, an example of matrix driving of such display elements will be explained in more detail using FIG.

In the figure, numeral 17 indicates a display element, which can be considered to have the same detailed configuration as that explained in FIG. 10. now,
When a heating current pulse is sequentially applied to the heat-generating resistance lines Xi, Xm, Xn, Xo, and Xp (these are called row lines) in the left and right directions in this display element 17, these resistance lines The corresponding liquid thin layer (not shown) is sequentially heated linearly, but at this time, the degree of heating is set to be below the boiling point of the liquid, so vapor bubbles are generated in the liquid thin layer. do not. On the other hand, in synchronization with the application of heating current pulses, the heating resistance wires Y are arranged in the vertical direction in the drawing.
A predetermined video signal is applied to c, Yd, and Ye (these are called column lines).

By applying this video signal, the resistance line Yc.

The liquid thin layer corresponding to Yd and Ye is heated linearly,
In this case as well, it is necessary to keep the degree of heating below the boiling point of the liquid, so this alone will not produce vapor bubbles in the corresponding thin layer of liquid. However, at the intersection of the row line and the column line where the heating current pulse and the video signal pulse are synchronized, the heating current pulse and the video signal pulse are mutually heated by the heat generated by both lines. If conditions are set so that the corresponding liquid thin layer foams only when heated in a compatible manner, vapor bubbles 18 are formed at the selected row/column intersection.

In the above example, even if the driving method is changed as follows, images can be formed in exactly the same way. That is, even if the device is modified so that a video signal is applied to the row lines and a heating current pulse is applied to the column lines, the effect is exactly the same.

As shown in the paper, the display element illustrated in FIG. 10 also enables matrix driving. Furthermore, Ma) I
In the case of the J-Fuchs dynamic method, it goes without saying that a radiation absorption layer is not required as an element component, but instead, a heat sink may be provided separately to enhance the heat dissipation effect of the resistance wire. desirable. This heat sink has a support 16 (10th
It is possible to substitute a diagram. The row line and column line are separated by an insulating layer 13, and the thickness of the insulating layer 13 is several μm. Therefore, when both signals are applied simultaneously due to the time lag in heat conduction, the liquid thin layer 2 is separated from the row line and the column line. At the same time, foaming may be inhibited because conductive heat does not arrive. Therefore,
In order to enhance the harmonic heating effect, it may be preferable to delay the applied pulse to the signal line closer to the liquid thin layer 2 than the signal pulse to the other signal lines. Note that it is not necessary that all of both signal lines be formed of heating resistors.

Rather, in order to save energy, only the intersections of row lines and column lines are constructed with heating resistors, and the rest are A.
I! It can be said that it is preferable to construct it with a good conductor such as
However, there is a drawback that the manufacturing process is complicated.

Further, another example of a heating element for configuring a display element suitable for IJ-Fuchs motion as shown in FIG. 11 will be explained with reference to FIG. 12.

FIG. 12 is an external perspective view schematically depicting a partial area of the heating element. In the figure, numeral 21 indicates a heating resistor layer, which is made of a known heating resistor (for example, nichrome alloy, Hf
B2. It is obtained by forming a planar film of Si3N, etc.). Although not shown, this resistance layer 21 naturally extends downward in the drawing. Also, 22-1, 22-2, 22
-3, 22-4.

are column conductors, 23-1, 23-2.23-
3°23-4 and 23-5 are both row conductors. All of these conductive wires are made of good conductors such as gold, copper, and aluminum. In the illustrated heating element, for example, when the column conductor 22-2 and the row conductor 23-3 are selected and a voltage is applied to them, one part of the resistance layer 21 corresponding to the intersection 24 of the two is selected. The part is energized and generates heat.

In this manner, by arbitrarily selecting and energizing the row conducting wires and column conducting wires, it is possible to generate heat at any (row/column) intersection.

Therefore, in a display element as shown in FIG. 10 incorporating the illustrated heating element, it is possible to display a dot matrix image using the same matrix driving method as in the example shown in FIG.

By the way, in the heating element shown in FIG. 12, it is also possible to provide the heating resistor layer 21 divided only at the intersection of the row conducting wire and the column conducting wire (the conducting wires are insulated from each other in other areas). In such a configuration (not shown), it is possible to substantially prevent the occurrence of losstalk, which is inconvenient for image formation faithful to the signal. Furthermore, if a heating resistor with diode characteristics is placed at the intersection of the row conductor and column conductor,
The effect of completely preventing crosstalk can be obtained.

It should be noted that color display can also be performed in the matrix-driven display method using the heating elements described above by adopting the same configuration as the example shown in FIG. 9. Also, in the drawing.

Although not shown, if the entire display element is made translucent, a so-called transmissive display element can be obtained. However, whether the display element is a transmissive type or a reflective type only causes a difference in the observation direction, and does not make a difference in the image forming principle itself based on the present invention.

Here, another application example of the present invention will be explained using FIGS. 13 and 14. @FIG. 13 is a general configuration diagram of the display device, and FIG. 14 is a schematic diagram illustrating its optical system. FIG. 3 is a perspective view of an image.

In the figure, when the display element 31 is continuously driven for a long time, the temperature of the thin liquid layer 32 inside the element 31 gradually rises due to heat accumulation (because the liquid is a thin layer). Steam bubbles may suddenly form inside. If the amount of heat storage increases in this way, it will cause noise, which is not desirable. Therefore, in this illustrated example, in order to prevent heat accumulation in the thin liquid layer 32, the thin layer 3
The liquid in 2 is circulated between the display element 31, the vaporization chamber 33, and the liquefaction chamber 34.

The role of the vaporization chamber 33 is to remove such excess heat as vaporization heat, and to absorb or relieve the pressure caused by the generation of vapor bubbles due to the signal. Furthermore, a pressure reducing means 35 is added to the vaporization chamber 33 in order to maintain it in a predetermined reduced pressure state. This pressure reducing means 3
5, if the inside of the liquid thin layer 32 is kept in a low pressure state,
Since vapor bubbles are formed at relatively low temperatures, driving energy can be reduced. Furthermore, since the evaporation rate of the liquid increases, the rate of heat dissipation is also accelerated, which is another effect of the pressure reduction means.

The vaporized vapor is then liquefied in the liquefaction chamber 34 by releasing heat outside the system, and is again injected into the liquid thin layer 32 within the display element 31 through the circulation path 36. Therefore, while maintaining the reduced pressure state by the pressure reducing means 35, the thin liquid layer 32 is transferred to the circulation path 36.
to the vaporization chamber 33, and from this vaporization chamber 33 to the liquefaction chamber 3.
4 and then from the liquefaction chamber 34 back to the liquid layer 32. The liquid circulation system described above is effective in firstly removing thermal noise as image defects, and secondly in removing pressure-induced noise. It is something that can be demonstrated.

Furthermore, by providing the display element 31 with a cooling means 37 consisting of a heat dissipation means or a Peltier effect element, the diagonal effect can be enhanced.

In order to apply a thermal signal to the display element 31,
For example, an optical system 38 shown in FIG. 14 is used. In the figure, a laser beam 41 output from a laser oscillator 40 passes through a thin film waveguide deflector 42 and then is reflected by a galvano mirror 43 while scanning the surface of a display element 31 at high speed. The laser oscillator 40 includes an image signal circuit (
(not shown), specific image formation becomes possible. Furthermore, in reality, the display element 31 is intermittently irradiated with a laser beam having a spot diameter of approximately several tens of micrometers.

Since the actual image forming mechanism in the display element 31 has been explained in detail above, its explanation will be omitted here.

In this way, while forming a C image on the display element 31 or after the image forming is completed, the observation light 4 is emitted from the illumination light source 44.
When 5a is irradiated toward the display element 31, the reflected light 4
5b passes through the enlarged projection V lens system 46a, 46b -C
1. The enlarged screen will be projected onto a screen not shown. (FIG. 13) By the way, the liquid circulation system explained in FIG. 13 does not require the intervention of a forced liquid circulation device such as a pump. In other words, a liquid circulation system can be constructed by natural convection of liquid.

Even if a liquid circulation system like the one described above is adopted, flowing the liquid is not recommended at least during the period when vapor bubbles (display pixels) are formed in the thin liquid layer, as this will disturb the image. Should be avoided.

That is, it is desirable that the timing and speed of circulating the liquid be synchronized with the so-called display period of one frame.

Further, the pressure reducing means 35 can be constructed using a vacuum pump or a solenoid valve, and it is desirable that fins be provided on the outer wall of the liquefaction chamber 34 for the purpose of promoting heat radiation.

The size of the vapor bubble assumed in the present invention explained above is approximately 10 μm to 1 μm in diameter, especially focusing on resolution.
It is about 00 μm. However, it is of course possible to implement the method outside the above range as long as resolution is not an issue.

Further, if the time from when a heat pulse is applied to the liquid until the vapor bubbles are formed is called a rise time, the rise time is about 101 tsec.

Conversely, if we call the time when these vapor bubbles disappear or disappear, the fall time, the fast one is 3.
0 μsec. The rise time and fall time are determined by the liquid temperature in the thin liquid layer, the liquid pressure, the pulse application time,
It depends on heat dissipation conditions, etc., and is also easily influenced by the viscosity and surface tension of the liquid, so it cannot be generalized.

However, from the viewpoint of afterimage effects, etc., the fall time is not required to be very fast.

A desired fall time can be easily set by adjusting the composition of the liquid. Generally, the liquid used in the present invention is made from various solvents, dyes, pigments, etc. Dyes include direct dyes, acid dyes, organic solvent-based dyes, etc. Solvents include water, alcohol-based, glycol-based, ketone-based, ester-based, and hydrocarbon-based, especially ethyl alcohol, methyl alcohol, and isopropyl alcohol. , ethylene glycol, ethyl cellosolve, diethyl glycol, freon, and mixtures thereof. Low boiling point solvents are advantageous in terms of power consumption because bubbles are generated at low temperatures.

If the bubbles are to remain as long as possible, especially if the display pixels are to remain, it is desirable to use a material that does not easily cool down and has a moderately high viscosity. In addition, especially when it is desired to variably adjust the bubble duration, it is effective to use the above-mentioned pressure reduction means. Tip 9: The lower the liquid pressure, the lower the temperature at which vapor bubbles will form. Therefore, the lower the pressure within the liquid layer is made by the variable pressure reducing means, the longer the display will last. The method of reducing the pressure of the liquid is particularly effective when displaying still images or moving images such as SmyMotion.

As detailed above, the main effects of the present invention are as follows: 1. Since it is possible to arrange each minute vapor bubble in a high-density arrangement as a display pixel unit, a high-resolution image can be displayed.

2. By adjusting the duration of vapor bubbles as display pixels in the liquid layer, it is possible to easily display still images or moving images including slow motion.

3. By employing a liquid circulation system in the display element, it is possible to present a noise-free and high-quality screen.

4. Multicolor display and full color display can be easily implemented.

5. Since the structure of the display element is relatively simple, its productivity is excellent, and the element has high durability and reliability.

6. Can be adapted to a wide range of drive systems.

There are many things that can be mentioned.

[Brief explanation of drawings]

1 to 10 are schematic cross-sectional views illustrating an example of the configuration of a display element used in the present invention, and FIG. FIG. 12 is a perspective view of the external appearance for explaining one configuration example of the heating element;
The figure is a schematic configuration diagram of a display device as an example of application of the present invention.
FIG. 14 is an external perspective view of an example of the imaging signal input system. In the figure, 1 is the radiation absorption layer, 2.32 is the liquid thin layer, and 3 is the radiation absorbing layer.
is a protective plate, 4 and 18 are steam bubbles, 5 is radiation, 7+ 45
a is an observation light, 8 is an optical film, 9 is a pressure absorption film, 10 is a heating element layer, 11 is a color mosaic filter, 12 is a reflective layer, 13 is an insulating layer, 14, 15° Xi, Xm,
Xn, Xo, Xp, Yc, Yd,
Ye is a heating resistance wire, 16 is a support, 17.31 is a display element, 21 is a heating resistance layer, 22-1.22-2.22-3
．． 22-4.23-1.23-2.23-3.23-4
．． 23-5 is a conductor, 33 is a vaporization chamber, 34 is a liquefaction chamber, 35
36 is a pressure reduction means, 36 is a liquid circulation path, 37 is a heat radiation and cooling means, 38 is an optical system, and 41 is a laser beam. Procedural amendment (voluntary) February 1-5, 1980 Commissioner of the Japan Patent Office Shima 1) Haruki Tono 1, Display of the case 1980 Patent M # 200779 2, Invention name image display method 3, Amendment Relationship with the case of a person who does
) Canon Co., Ltd. Representative Ryu Kaku Part 4, Agent address: 3-30-25 Shimomaruko, Ota-ku, Tokyo 146, "Detailed description of the invention" column of the specification subject to amendment, and drawings (No. 9
figure). 6. Contents of the amendment l) The portions specified in the table below on pages 14 to 15 of the specification are corrected as follows. [-・ 14/ 14/ 14/ l/ 14/ +4/ 14/ 14/ 14/ 15/ 2) Correct Figure 9 as shown in the attached sheet (in red).

Claims (1)

[Claims] An image display method characterized in that a plurality of pixels are formed by heating a plurality of points in a liquid layer and bubbles are generated in each heated portion, and these pixels are assembled to form a developed image.