JPS58100835A - Display - Google Patents

Abstract

PURPOSE:To display pictures with excellent reliability with respect to a device for displaying pictures of good quality with high resolution by providing a liquid layer and a heating element for generating foam in the liquid layer, connecting liquid circulating paths to the liquid layer and providing a pressure reducing layer in said paths. CONSTITUTION:When a display element 31 is driven continuously for a long time, the temp. of a thin liquid layer 32 of the element 31 is risen by accumulated heat and may foam vapor foam suddenly in the layer 32. Since the increase in the quantity of accumulated heat can be a cause for noises, the increase is prevented by so arranging the element that the liquid in the layer 32 circulates among the element 31, a vapourizing chamber 33 including a pressure reducing means 35 and a liquefying chamber 34. The role of the chamber 33 is to deprive the liquid of excess heat as heat of vapourization, and the means 35 for maintaining the same in a prescribed pressure reduced state is added in said chamber. Thus, thermal noises and noises by pressure are removed and pictures are displayed with excellent drivability and reliability.

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, there are still complaints that this CRT does not reach the level of hard copies made using silver halide or electrophotography in terms of image quality, resolution, and display capacity. In addition, attempts have been made to put into practical use a so-called liquid crystal panel that displays dot matrix using C1 liquid crystal as an alternative to CRT, but this liquid crystal panel also has problems in terms of drive performance, reliability, and productivity. In the end, I haven't gotten anything that I'm 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 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, 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 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.

Specifically, the organic solvent includes, for example, methyl alcohol, ethyl alcohol% n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, 5%
Alkyl alcohols having 1 to 4 carbon atoms such as ec-butyl alcohol, tert-butyl alcohol, and inobutyl alcohol; amides such as dimethylformamide and dimethylacetamide; amines such as triethanolamine and jetanolamine; Ketones or keto alcohols such as acetone alcohol; ethers such as tetrahydrofuran and dioxane; polyalkylene glycols such as polyethylene glycol and polypropylene glycol; ethylene glycol, propylene glycol, 7" ethylene glycol, hexylene glycol, diethylene glycol, etc. Alkynon glycols in which the alkylene group has 2 to 6 carbon atoms; glycerin; lower alkyl ethers of polyhydric alcohols such as ethylene glycol methyl ether, diethylene glycol methyl or ethyl ether, triethylene glycol monomethyl (or ethyl) ether; etc.

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.
1μfrL~ioooμfn) 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, the reduction in the amount of transmitted light may be a reduction in part of the wavelength light in the visible range, or the reduction in the amount of transmitted light may be due to either light absorption or scattering.

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. Q: If the display element configured as above in Fig. 1 is irradiated with radiation (especially infrared rays) 5 from the right side of the drawing , 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 the form of a dot with the radiation 5 as a beam, but it is also possible to use a method in which one beam or an l-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.

In the present invention, in the form of vapor bubbles 4 formed in the liquid thin layer 2 by applying a heat pulse in a diagonal manner, -C is generated from the surface of the absorbent layer 1 and leaves from this. It is effective to use a flat shape that creates a liquid void in the thin liquid layer 2 that grows and increases without any movement and reaches the protective plate 3.@In the present invention, vapor bubbles 4 are formed in the thin liquid layer 2. When it is done, the first
In the embodiment (when a translucent liquid is used), display pixels can be identified based on the difference in the amount of light reaching the viewing eye 6. 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 (
same.

It does not matter whether the bubbles contact the protective plate or not, and the size -C 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 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 to make it 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 the liquid to heat the liquid by conduction.
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 carrying out the first aspect 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 index of the material of the protection plate 3 and the liquid are, the more the distinguishability of the display pixels increases2.

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 needs to be formed of a high melting point metal material or metal compound material that does not melt itself during heat conduction.In addition, in the present invention, As shown in FIG. 1, 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 (FIG. 3), for example, the difference in brightness or chroma When a 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 accumulator (not shown) to alleviate the increase in pressure in the thin liquid layer 2. Also, as another method,
As shown in FIG. 4, the pressure generated in the thin layer 2 may be absorbed by interposing a pressure absorbing film 9 within the display element.

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, 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) of the display element. 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 and 5iIIN.
, 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 thin liquid layer 2 should be avoided since this will shorten the life of the element. In other words,
In a configuration in which the thin liquid layer 2 is in contact with a corrosive component,
Chemical corrosion, electrochemical corrosion, mechanical corrosion due to cavitation, etc. occur, and the -C element is often damaged.

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
Examples include dielectric metal oxides (5iQl, TiO2, etc.) and heat-resistant plastics. 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 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 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, O, M), a non-light-transparent coloring 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, 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
When a heating current pulse is sequentially applied to i, Although it is heated, at this time, the degree of heating is set to be below the boiling point of the liquid, so 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 the conditions are set so that the corresponding thin liquid layer foams only when heated in a compatible manner, vapor bubbles 18 will be formed at the intersection of selected rows and columns. In the example, even if the driving method is changed as follows, images can be formed in exactly the same way. That is, applying a video signal to the row line,
Even if it is modified to apply a heating current pulse to the column wires, the effect is exactly the same.

As shown above, 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. Desirably @ this heat sink has support 16 (10th
It is possible to substitute a diagram. 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, due to the time difference in heat conduction, when both signals are applied simultaneously, a liquid thin layer is formed. Since the conductive heat does not reach 2 at the same time, foaming may be inhibited. 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.
It can be said that it is preferable to construct a display element using a good conductor such as /, but this has the disadvantage that the manufacturing process becomes complicated. Another example of the heating element will be explained with reference to FIG.

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
B2.8i, N, etc.) is formed into a planar film. 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 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, 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 way, by arbitrarily selecting and energizing the row conductors and column conductors, 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.

Note that even in the matrix-driven display method using the heat generating elements described above, it is possible to perform a power display by employing a configuration similar to that shown in FIG. 9. Also, although not shown in the drawings, if the entire display element is made translucent,
A so-called transmissive display element is 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 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 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,
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, etc., the diagonal effect can be promoted.

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 directed toward the display element 31 and irradiated with C, the reflected light 45b passes through the magnifying projection lens system 46a and 46b.
C1 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. 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, if resolution is not an issue, it is of course possible to perform the process outside the above range.

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.

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 dyes, etc. The solvent -C is water.

Alcohol-based, glycol-based, ketone-based, ester-based,
Hydrocarbons, 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. A high one is preferable. 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-modillon moving images.

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 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. 12 is an external perspective view for explaining one configuration example of a 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
is a protective plate, 4.18 is a steam bubble, 5 is a radiation ray, 7, 45
a 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, 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 (voluntary) Commissioner of the Japan Patent Office Shima 1) Haruki Tono 1, Indication of the case Patent Application No. 200784 of 1982 2, Device for displaying the name of the invention 3, Person making the amendment Relationship with the case Patent applicant Address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (100
) Canon Co., Ltd. Representative Ryu Kaku 3-4, Agent Address: 3-30-25 Shimomaruko, Ota-ku, Tokyo 1413
6. Contents of the Supplement 1) The sections specified in the table below on pages 14 to 15 of the specification should be replaced with the following: Correct as shown. "i 14/6 1/478 418 /1 14/11 - 14/1Z 14/13 14/14. 14/1B 15/1 2) Correct Figure 9 as shown in the attached sheet (in red).

Claims (1)

[Claims] Basically, the liquid layer and the heat generated to generate bubbles in this liquid layer 1! 1. A display device, characterized in that a liquid circulation path is connected to the liquid layer of a display element comprising an element, and a pressure reducing means is provided in the middle of the circulation path.