JPS58100820A - Display element - Google Patents

Abstract

PURPOSE:To obtain a display element having high resolution and excellent drivability and productivity wherein the microfoam produced in a liquid layer is used as picture elements by providing a reflection layer or a light diffusion layer between the liquid layer and a heating element disposed in proximity to said liquid layer. CONSTITUTION:A light reflective or light diffusive optical film 8 of white or light color is provided of a metal or metallic compd. material having a high m. p. between an IR absorbing layer 1 which is colored to a black or other colors and produces locally high temp. parts by absorbing IR beams 5, as a heating element and a liquid layer 2 which generates foam 4 by the heat of the layer 1. A transparent protective layer 3 is provided of glass, plastics, etc. on the layer 2, whereby a display element is obtained. The layer 2 is colorless, or is colored and transparent or turbid. IR beams are irradiated to the layer 1 of such element to generate microfoam like images in the layer 2. Observing light 7 is irradiated from the layer 3 side and the display is viewed with the reflected light by utilizing the light scattering of said foam. The display is made sharper by the film 8.

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 display capacity, this CRT uses silver halide or electrophotography.
-There remains some dissatisfaction with the fact that it has not reached the level of the top copy. In addition, as an alternative to CRT, attempts have been made to commercialize so-called liquid crystal panels that display dot matrix using liquid crystals, but this liquid crystal panel also has problems in terms of drive performance, reliability, and productivity. In the end, I didn't get anything that I was satisfied with.

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.

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

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

One of the imaging principles of 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 absorbing layer 1 is colored (preferably black) that efficiently absorbs radiation, especially infrared rays, and is obtained by depositing various inorganic or organic materials that are difficult to melt themselves. . still,
If the absorption layer 1 itself has a poor support function, it is desirable to add a radiation-transparent support 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.

Specifically, the organic solvent -C is, for example, methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, 5ec
- Alkyl alcohols having 1 to 4 carbon atoms such as butyl alcohol, tert-butyl alcohol, and isobutyl alcohol; Amides such as dimethylformamide and dimethylacetamide; Amines such as triethanolamine and jetanolamine; Acetone and diacetone alcohol Ketones or keto alcohols such as; ethers such as tetrahydrofuran and dioxane, polyethylene glycol,
Polyalkylene glycols such as polypropylene glycol; alkylene glycols in which the alkyne group contains 2 to 6 carbon atoms such as ethylene glycol, phlobin/glycol, butylene glycol, hexyregicol, diethylene glycol; glycerin; ethylene glycol methyl ether , diethylene glycol methyl or ethyl ether, and lower alkyl ethers of polyhydric alcohols such as triethylene glycol monomethyl (or ethyl) ether.

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 μm) is desirable. Note that at this time, the amount of transmitted light does not need to 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. However, this protective plate 3 may not be used when the display element is arranged horizontally. If the display element of FIG. , the corresponding points on the absorption layer 1 generate heat.

When a part 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 rises, and it eventually 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 the form of a dot using the radiation 5, but it is also possible to use a method in which one beam or one line beam is scanned over the absorption layer l. However, since it is actually extremely difficult to form vapor bubbles 4 with uniform optical properties over a large area, the latter method is used, that is, the vapor bubbles 4 are formed in a dot shape. This method 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 form of the vapor bubbles 4 formed in the liquid thin layer 2 by the application of a heat pulse as shown in Fig. It is effective to have a flat shape that creates a liquid void in the thin liquid layer 2 that grows and reaches the protective plate 3.

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 hemispherical.

It does not matter whether the bubbles contact the protective plate or not, and their size is preferably approximately 40 μm 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 white liquid is used), display pixels are identified by the appearance of a colored portion (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 desirably as long as possible from the standpoint 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. 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 accumulator (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 accelerate the formation speed of the vapor bubbles 4, that is, the display pixels. A heating element layer 10 is provided between the radiation absorbing layer 1 and the liquid thin layer 2 (FIG. 5) or between the radiation absorbing layer 1 and the optical film 80 (FIG. 6), thereby making the liquid thin layer 2 It is also possible to uniformly preheat and raise the temperature to near the boiling point of the liquid.

At this time, if the absorption layer l or the optical film 8 is a conductor, an insulating layer (not shown) is provided between them and the heating element 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, Si3N,
Examples include metal compounds typified by, etc., and alloys such as nichrome.

Further, in the present invention, the display element structure is such that a corrosive component is in direct contact with the thin liquid layer 2.

This should be avoided as it will shorten the life of the device. This means that corrosive components are in contact with the thin liquid layer 2.
In the configuration with C, chemical corrosion, electrochemical corrosion, mechanical corrosion due to cavitation, etc. occur, and the -C element is often damaged.

Therefore - C1 In such a case, a corrosion-resistant protective film (different >'j'z
) It is desirable to form k. The material for this protective film -C is a dielectric metal oxide (SiQ,
, TiO2, etc.) and heat-resistant plastics. 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, 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.
9 and Japanese Patent Publication No. 52-36019, detailed explanations thereof will be omitted here as these are incorporated herein by reference.

In the illustrated example, when vapor bubbles 4 are formed in the thin liquid layer 2 that is in contact with a portion (Y) of the yellow filter, a yellow color develops due to the reflected light passing through this filter. Also, when vapor bubbles (not shown) are formed in the thin liquid layer 2 in contact with the cyan filter part (C), a cyan coloration is seen due to the reflected light passing through this filter.Similar to G, the magenta filter When vapor bubbles 4 are formed in contact with the part (M), 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, when vapor bubbles are formed in adjacent Y, O, and M at the same time, the observer 6 will see white.

Instead of each of the above filter parts (Y, G!, M), directly,
It is also possible to form an opaque coloring layer (not shown) with a colored organic or inorganic pigment, but in either case, it has good thermal conductivity and good heat resistance and impact resistance. It is desirable to use superior materials. 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. 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, reference numeral 17 indicates a display element, which can be considered to have the same detailed configuration as explained in FIG. 10. Now, in the drawing inside this display element 17, the heating resistance line X in the left and right direction
I! , 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, Ye (these are called column lines) l.

By applying this video signal, the resistance line Yc.

The thin liquid layer corresponding to Y(1, Yc is heated linearly, but in this case as well, the degree of heating must be kept below the boiling point of the liquid. No bubbles are generated.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. If conditions are set so that the corresponding thin liquid layer bubbles only when the selected row and column intersect, vapor bubbles 18 will be 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 stated above, the display element illustrated in FIG. 10 can also be driven by matrix or matrix drive. In addition, Mar-I
In the case of the J-socks 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, so if both signals are applied simultaneously due to the time lag in heat conduction, the liquid thin layer 2 At the same time, since conductive heat does not reach the foam, 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.
It can be said that it is preferable to use a good conductor such as /, but this has the disadvantage that the manufacturing process becomes more 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 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 Si, N, 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 an inconvenience in forming an image faithful to the signal. Further, by arranging a heating resistor having diode characteristics at the intersection of the row conductor and the column conductor, it is possible to completely prevent crosstalk.

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. Although not shown in the drawings, if the entire display element is made translucent, a so-called transmissive display element can be obtained. In modern times, display elements are transmissive, but reflective 1ζ11
The only difference that arises is the observation direction, and there is no 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 display device, and FIG. 14 is a schematic external perspective view illustrating its optical system.

In the figure, when the display element 31 is driven continuously for a long time, the liquid 6 thin layer 32 inside the element 31 gradually rises in temperature due to heat accumulation (because the liquid is a thin layer), and becomes thin. Vapor bubbles may inadvertently form in the layer 32. 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 liquid in the thin layer 32 is transferred to the display element 31, vaporization chamber 33, and liquefaction chamber 34.
It was made to cycle between.

The role of the vaporization chamber 33 is to take away such surplus 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. If the inside of the liquid thin layer 32 is kept in a low pressure state by the pressure reducing means 35, vapor bubbles are formed at a much lower temperature, so that 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 liquefied in the liquefaction chamber 34 by releasing heat outside the system, and is injected into the liquid thin layer 32 inside the display element 31 again 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 3.
6 to the vaporization chamber 33, from the vaporization chamber 33 to the liquefaction chamber 34, and then from the liquefaction chamber 34 back to the liquid thin layer 32. and secondly, it is effective in removing noise caused by pressure.

Furthermore, by attaching a cooling means 37 consisting of a heat dissipating 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 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 completing five images, the observation light 4 is emitted from the illumination light source 44.
When 5a is directed toward the display element 31 and irradiated with C, the reflected light 45b passes through the magnifying projection lens system 46a and 46b.
The enlarged screen will be projected onto a screen not shown in C1. (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 dressing 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.

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.

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.

The desired fall time of 9 hours 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., and solvent-based dyes include water, alcohol-based, glycol-based, ketone-based, ester-based, hydrocarbon-based, etc., 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 as follows: 1. Since it is possible to arrange microscopic vapor bubbles in a high density in units of foot pixels, it is possible to display high-resolution images. I can do it.

2. By adjusting the duration of the vapor bubbles as display pixels in the liquid layer, still images or moving images including slow motion can be easily displayed.

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.

6.0 that 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 a radiation absorption layer, 2, 32rti liquid thin layer, 3 is a protection plate, 4, 18 are vapor bubbles, 5 is radiation, 7.4
5a 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, 3
5 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 (spontaneous) February 1z, 1980 Commissioner of the Patent Office Shima 1) Haruki Tono1, Indication of the case Patent Application No. 200769 of 19882, Name indicating element of the invention 3, Person making the amendment Relationship to the incident Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (100
) Canon Co., Ltd. Representative Ryu Kaku Part 4, Agent address: 3-30-25 Shimomaruko, Ota-ku, Tokyo 148, ``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. 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 1 disposed close to the liquid layer, and a reflective layer or a light diffusion layer interposed between the element and the liquid layer.