JPS58100824A - Display element - Google Patents

Abstract

PURPOSE:To obtain a display element which has high reliability and drivability with high resolution by making use of the light scattering of foam, by providing a liquid layer, a heating element which generates foam in the liquid layer and a pressure absorbing material which absorbs the pressure generated by the foam. CONSTITUTION:In a display element laminated with a radiation absorbing layer (preferably the layer colored to black or the like) 1 which generates heat when irradiated with, for example, IR beams 5, a liquid layer 2 which generates micro foam 4 in accordance with the heating parts of the layer 1, and a light transmittable protective plate 3, a pressure absorbing layer 9 of a light transmittable and elastic material is provided at the boundary between the plate 3 and the layer 2 in order to absorb the pressure generated by the foam 4. Thus the display element having high reliability is obtained.

Description

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

At present, cathode ray tubes (so-called CRTs) are widely used as terminal displays in various office equipment and measuring instruments, or as displays in monitors for televisions and video cameras. However, there are still complaints that 3RT does not reach the same level as hard copies using silver halide or electrophotography in terms of image quality, resolution, and storage capacity. As an alternative to OR,T, attempts have been made to put so-called liquid crystal panels into practical use that display dots and matrix using liquid crystals.
C is also not completely satisfactory in terms of drive performance, reliability, and productivity.

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

aimed to.

That is, an object of the present invention is to provide a method for displaying high-resolution, high-quality images, and a novel display device that is excellent in drive performance, productivity, and reliability, and has high-density single-sided elements.

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, ■ indicates a radiation absorption layer, 2 indicates a thin liquid layer, and 3 indicates 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 absorption layer 1 itself lacks a supporting function, it is desirable to add a radiation-transparent support plate made of glass or plastic (not shown). They can be roughly divided into: ■Transparent liquids, ■Colored liquids, and ■Cloudy liquids. 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-propyl alcohol, inflovir alcohol, n-butyl alcohol, and 5ec-
7” chill alcohol tert-f/L/7/
L/co-/L', ia Alkyl alcohols having 1 to 4 carbon atoms such as butyl alcohol; amides such as dimethylformamide and dimethylacetamide; amines such as triethanolamine and jetanolamine; acetone,
Ketones or keto alcohols such as diacetone alcohol; polyalkylene glycols such as tetrahydrofuran, dioxa 7, etc. noether, polyethylene glycol, polypropylene glycol; ethyl alcohol, propylene gelylcol, phthylene gelylcol, hexylene glycol, diethylene glycol alkylene glycols containing 2 to 6 carbon atoms, such as; glycerin; lower alkyl of polyhydric alcohols such as ethylene glycol methyl ether, diethylene glycol methyl or ethyl ether, triethine glycol monomethyl (also fd ethyl) ether; Examples include ethers.

In addition, the above-mentioned colored liquid refers to various dyes,
It refers to a colored liquid (including black) obtained by dissolving or dispersing pigments, and a cloudy liquid is a cloudy liquid in which light-diffusing fine particles (...it does not matter whether they are solids or not) are present in the diagonally upward liquid. 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 μf71) 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 point on the absorbing layer 1 generates heat @ When a part of the absorbing layer 1 generates heat in this way, the liquid in contact with it is heated by thermal conduction, the temperature of the liquid rises, and it eventually boils and forms a thin layer of liquid. Steam bubbles 4 are formed in 2. In addition, when irradiating the display element with the radiation 5, it can be irradiated in a pattern corresponding to a predetermined image, or a laser light source can be used to irradiate the radiation 5 with a large number of beams. It is irradiated all at once in a dot shape, but one beam or one line beam is applied to the absorption layer 1.
A method of scanning upward can also be used. However, since it is actually extremely difficult to form vapor bubbles 4 with uniform optical properties over a wide area, the latter method is
In other words, the method of forming the vapor bubbles 4 in the form of dots can be said to be advantageous 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.

In the present invention, the vapor bubbles 4 formed in the thin liquid layer 2 by the application of heat pulses in a diagonal manner are generated from the surface of the absorption layer 10, and from this n. A flat material that grows and increases without detaching and creates a liquid void in the thin liquid layer 2 that reaches the protective plate 3 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 70 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 hemispherical.

It does not matter whether or not this bubble touches the protective plate), and its size -C is preferably about 40 Bm in diameter.

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 30 m5 ec, and is preferably as long as possible from the viewpoint of utilizing 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, Even if the vapor bubbles 4 generated in the liquid thin layer 2 do not reach from the absorbent layer 1 to the protective plate 3 as shown in FIG. 1 (FIG. 3), for example, the difference in brightness or When a saturation difference or a hue difference appears, a certain effect of identifying 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 film 9 may be made of a translucent elastic material or a highly viscoelastic material, or may 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, a heating element layer 10 is provided between the radiation absorbing layer 1 and the liquid thin layer 20 (FIG. 5) or between the radiation absorbing layer 1 and the optical film 80 (FIG. 6) of the display element. In this way, the thin liquid layer 2 may be uniformly preheated and the temperature may be raised to near the boiling point of the liquid.

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 HfB2, Si, and N4.
Examples include metal compounds typified by, etc., and alloys such as nichrome.

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

This should be avoided as it will shorten the life of the device. That is, if a corrosive component comes into contact with the thin liquid layer 2,
In the structure with -C, chemical corrosion, electrochemical corrosion, and mechanical corrosion due to capitulation often occur, resulting in damage to the element.

Therefore -C1 In such a case, it is desirable to form a corrosion-resistant protective film (not shown) at the interface between the thin liquid layer 2 and the corrosive component. Soshi-C1 The material of this protective film-C
is a dielectric metal oxide (SiQ, , TlO2
etc.), heat-resistant plastic, and glue. In the present invention, of course, the protective film all-optical film 8 may also serve as the 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. In the figure, except for the color mosaic filter 11 and the reflective layer 12, the other parts are the same as those explained in FIGS. 1 to 8. Components 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 in contact with a portion (Y) of the yellow filter, the color is yellow due to the reflected light passing through this filter. Further, when vapor bubbles (not shown) are formed in the liquid thin layer 2 in contact with the cyan filter part (0), a cyan coloration is observed due to the reflected light passing through this filter. Similarly, when vapor bubbles 4 are 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 that are based on the additive coloring method. For example, 1,
When vapor bubbles are formed in adjacent Y, O, and M at the same time, the observer 6 will see white.

Instead of a portion of each of the filters (Y, C, M), it is also possible to directly form a colored organic or inorganic pigment (opaque coloring layer (not shown); In this case, it is also desirable to use a material that has good thermal conductivity and excellent heat resistance and impact resistance. Furthermore, as in the latter aspect,
When coloring occurs due to surface reflection of the pigment layer, 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. 1θ.

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, reference numeral 17 indicates a display element, which can be considered to have the same detailed configuration as explained in FIG. 1θ. Now, in the drawing inside this display element 17, the heating resistance line X in the left and right direction
l! , Xm, Xn, Xo, and Xp (these are called row lines), when heating current pulses are sequentially applied, the liquid thin layers (not shown) corresponding to these resistance lines are sequentially heated linearly. However, at this time, since the degree of heating is set to be below the boiling point of the liquid, no vapor bubbles are generated in the thin liquid layer. On the other hand, in synchronization with the application of heating current pulses, the heating resistance wires Y are arranged vertically 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 thin liquid layers corresponding to Yd and Ye are linearly heated, but 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 cause vapor bubbles in the corresponding thin liquid layers. Don't let it happen. 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 above, the display element illustrated in FIG. 10 also enables matrix driving. It should be noted that in the case of the matrix drive method, it is absolutely true 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. is desirable. This heat sink has a support 16 (the one shown in FIG. 10 can be used instead). The row lines and column lines are separated by an insulating layer 13, and the thickness of the insulating layer 13 is several μm.
Therefore, if both signals are applied at the same time due to a time lag in heat conduction, the conductive heat will not reach the liquid thin layer 2 at the same time, and foaming may be inhibited. Therefore, in order to further 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! According to Kanmoto, it is preferable to use a good conductor such as
However, there is a drawback that the manufacturing process is complicated.

Another example of a heating element for configuring a display element suitable for matrix driving 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 heat generating resistor layer, which is made of a known heat generating 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 conducting wires. All of these conductive wires can be 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, the intersection 24 of both
A portion of the resistance layer 21 corresponding to the current 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 heating element shown in the drawing, it is possible to display a dot matrix image using the same matrix drive 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.

Note 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. 90. Further, although not shown in the drawings, 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 differs 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 schematic configuration diagram of the water entry device, and FIG. 14 is a schematic external perspective view illustrating its optical system.

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 the display element 31, the vaporization chamber 33, and the liquefaction chamber 340.
I tried to cycle between the two.

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,
Driving energy can be reduced because vapor bubbles are formed at lower temperatures. 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 attaching a cooling means 37 consisting of a heat radiation means or a Peltier effect element to the display element 31, the constriction 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 outputted from a laser oscillator 4.degree. 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. By connecting an image signal circuit (not shown) to the laser oscillator 4o, 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 E-ism in the display element 31 has been explained in detail previously, its explanation will be omitted here.

In this way, while forming an image on the c1 display element 31, or after image formation is completed, the observation light 45a is directed toward the display element 31 from the illumination light #44.

The reflected light 45b is transmitted to magnifying projection lens systems 46a, 46.
Through b, an enlarged screen is 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. In other words, it is desirable that the timing and speed of circulating the liquid be synchronized with the so-called water entry 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 IOμffZ in diameter, especially focusing on resolution.
-100 μm or so. However, it is of course possible to implement the method outside the above range as long as resolution is not an issue.

Furthermore, if the time from when a heat pulse is applied to the liquid until the vapor bubbles are formed is called the rise time, the rise time is about 10 μsec.

On the other hand, if we call the time when the vapor bubbles disappear or disappear, the fall time is 3.
0 μsec. The rise time and fall time are affected by the liquid temperature and pressure in the thin liquid layer, pulse application time, heat radiation conditions, etc., and are also easily affected by the viscosity and surface tension of the liquid. 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, and organic solvent-based dyes.The solvents used include water, alcohol, glycol, ketone, ester, and hydrocarbon-based dyes, especially ethyl alcohol, methyl alcohol, Isopropyl alcohol,
Ethylene glycol, ethyl cellosolve, diethyl glycol, freon, and mixtures thereof are suitable. 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. In other words, the lower the liquid pressure, the lower the temperature at which vapor bubbles are formed. 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 slow-motion videos.

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

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, a noise-free and high-quality screen can be presented.

4. Multi-color 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 the drawing]

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 a radiation absorption layer, 2 and 32 are liquid thin layers, and 3
1 is a protective plate, 4 and 18 are vapor bubbles, 5 is radiation, L45a is 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, 1
3 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, 22-1.22-2.22-3.2
2-4.23-1.23-2.23-3.23-4.2
3-5 is a conductor, 33 is a vaporization chamber, 34 is a liquefaction chamber, 35 is a pressure reduction means, 36 is a liquid circulation path, 37 is a heat radiation and cooling means, 3
8 is an optical system, and 41 is a laser beam. Procedural amendment (voluntary) February 12, 1980 Commissioner of the Japan Patent Office Shima 1) Haruki Tono 1, Electricity display Patent Application No. 200773 of 1980 2, Name display element of the invention 3, Make amendments Relationship with the case Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (100
) Canon Co., Ltd. Representative Noh Kaku 3 Department 4, Agent Address 3-30-25 Shimomaruko, Ota-ku, Tokyo 148 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. 2) Correct Figure 9 as shown in the attached sheet (in red).

Claims (1)

[Claims] A display element comprising a liquid layer, a heat generating element disposed near or in contact with the liquid layer, and a pressure absorber.