JPS60126628A - Optical modulating method - Google Patents

Abstract

PURPOSE:To improve drivability, reliability and durability in optical modulation by adding the heat meeting an input signal to a prescribed film to cause a phase transfer thereby changing an optical path. CONSTITUTION:The desired position of a heating element 2 is heated according to a certain pattern for the purpose of making an image and a property change is caused in the heated part 5 of the monomolecular layer or cumulative film 3 of the monomolecular layers on the heated element 2. On the other hand, illuminating light 7 of parallel light is made incident on such display element from the base plate 1 side thereof, then a change in an optical path and scattering are generated by the light passing through the part except the heated part 5 and the light passing through the heated part. Such change is directly and indirectly captured and is displayed, by which the image having good quality is displayed with excellent drivability, reliability, productivity and durability.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel light modulation method, and more particularly to an optical element used in a light modulation device, a display device, a recording device, a storage device, etc.

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, dissatisfaction remains with this CRT in that its image quality, resolution, and display capacity do not reach the level of hard copies made using silver halide or electrophotography. In addition, as an alternative to CRT, attempts are being made to put so-called liquid crystal panels into practical use that display dot matrix images using liquid crystals.
Nothing satisfactory has yet been achieved in terms of driveability, reliability, productivity, and durability.

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

In other words, it is an object of the present invention to provide light modulation for use in a light modulation device, a display device, a recording device, and a storage device T that display high-resolution, high-quality images and have excellent drive performance, productivity, durability, and reliability. The purpose is to provide a method.

The light modulation method of the present invention heats a monomolecular film or a monomolecular layer stack made of organic compound molecules having a hydrophobic part and a parent part by means of generating heat in response to an input signal to cause a phase transition. An example of a display element using the light modulation method according to the present invention will be described below with reference to the drawings, in which light modulation is performed by scattering or changing the optical path of the light passing therethrough. FIG. 1 is a cross-sectional view of a display element using the light modulation method according to the present invention, and FIG.
^) shows a transmissive display element DE, and Figure R1 (B) shows a reflective display element DE. 1 is a substrate, 2 is a heat generating RL element, 3 is a monomolecular film or a monomolecular layer stack, and 4 is a protective substrate.

The image forming principle of the transmissive display element shown in FIG. 1(A) is as follows.

It is as follows.

A desired position of one heat generating element 2 is heated according to a certain pattern for image formation, and physical property changes are caused in the heated monomolecular film or monomolecular layer cumulative film 3 of the heated heat generating element 2 and the heating section 5. When the illumination light 7, which is the Y-row light, is incident from the substrate l side of this display element, the optical path changes between the light passing through the parts other than the heating section 5 and the light passing through the heating section 6.
Scatter may occur. This change is captured and displayed both directly and indirectly.

In the reflective display element shown in Figure 1 (Japanese), the irradiation light 7
Contrary to the transmission type, the light enters from the protective substrate 4 side and is reflected by a reflection film (not shown) provided on the substrate l side from the monomolecular film or monomolecular layer cumulative film 3. Changes in the optical path of reflected light reflected at other parts are captured and displayed.

Molecules constituting a monomolecular film or a monomolecular layer stack of optical element f- using the light modulation method of the present invention are as follows.

A wide range of organic compounds can be used as long as they have a hydrophobic part and a parent part in the molecule.

Examples of such organic compounds include the following.

(1) Higher fatty acid CH3(CR7)x C00)l C)13(C:R7)+6COOH CH3(CH2)18 CC00 HC:4(CH2)4(CH3CCH2)4 (CTo
)2C00BCTo= CH(CH2)11 C00H
CH2; (H((Hz) C00 to I) lC:H2=
CH(CH2)7゜(1:00HCH3CCH2)tt
CC00H c! 1l(2 CH3CCH2)B C-C-C-1(CH2)8 (
OOHCHsCCH>>9C? C-C; C (CR7)
,C00HCH3(CR7)II C=C-C=C(C
H2)8COOHCH3(CH2)13 0 =C-C
=C(CH2)11 C00H(2) Cyanine dye general formula I cyanine dye, which is an integer of ).

(II) (Seal) +IV) (V) (G) (3) In the formula (7), Z is NR,, O, Se, c(
Me) 2, Y is H or 2-Me), R
3 is an alkyl group of CI"4, and R2 is CIO~3o
is an alkyl group.

Specific examples of the cyanine dye represented by the general formula (2) are illustrated below.

3) Azo dye (R, is an alkyl grave of C8° to 3°) (4) Phospholipid lecithin sphingomyelin plasmamalogen kephalin (5) Long chain sialkyl ammonium salt I (m is . to 3 (integer of °) Examples of methods for creating a monomolecular film or a monomolecular layer cumulative film using the organic compound include (1).

Langmuir blog x developed by Langmuir et al.
-/to method (LB method) is used. The Langmuir-Prodgett method is based on the Langmuir-Prodgett method, in which a molecule has a parent wood group and a hydrophobic group within the molecule, and when the balance between the two (balance of amphiphilicity) is maintained appropriately, the molecule has a parent wood group on the water surface. This is a method of creating a monomolecular film or a cumulative film of monomolecular layers by using the fact that the film turns downward into a monomolecular layer. The monomolecular layer on the water surface has the characteristics of a two-dimensional system. When the molecules are sparsely dispersed, the two-dimensional ideal gas equation nA=kT holds true between the area per molecule A and the surface pressure ■, resulting in a ``gas film''. Here, k is Portzmann's constant and T is absolute temperature. If A is made sufficiently small, the intermolecular interaction will be strengthened, resulting in a one-dimensional solid "condensed film (or solid film)". The condensed film can be transferred layer by layer to the surface of a substrate such as a glass. Using this method, a monomolecular film or a monomolecular layer stack is produced, for example, as follows.

First, an organic compound is dissolved in a solvent, and this is spread into an aqueous phase to precipitate the organic compound in the form of a film. Next, a partition plate (
(or a float) is provided to limit the development area and control the state of aggregation of the membrane material, thereby obtaining a surface pressure (2) proportional to the state of aggregation. By moving this partition plate, the developed area can be reduced to control the agglomeration state of the membrane material, and the surface pressure can be gradually increased to 7 A to set the surface pressure n suitable for producing a cumulative membrane. By gently lowering the clean substrate vertically while maintaining this surface pressure, the monomolecular film is transferred onto the substrate. Although a monomolecular film is produced by the above steps, a monomolecular single-layer cumulative film can be produced by repeating the above operations to obtain a monomolecular layer cumulative LA with a desired degree of accumulation.
Ili is formed.

The film-forming molecules include one or more of the organic compounds listed above.
- selected.

Thickness of monomolecular 1 model or monomolecular layer cumulative film is 30 to 300
μm is suitable, especially 3000λ to 30gm.

In order to transfer the monolayer onto the substrate, in addition to the above-mentioned vertical dipping method, methods such as horizontal deposition method and rotating cylinder method are used. The water transfer method is a method in which the substrate is transferred to the water surface by contacting it with water.
The rotating cylinder method is a method in which a cylindrical substrate is rotated on the water surface to transfer a monomolecular layer onto the surface of the substrate. In the vertical immersion method mentioned above.

When the substrate is lowered in a direction across the water surface, a monomolecular layer with the parent wood group facing the substrate is formed on the substrate. When the substrate is lowered as described above, the middle molecular layers are overlapped one by one at each step. Since the direction of the prefabricated molecules is reversed between the pulling process and the dipping process, according to this method, a Y-shaped film is formed between each layer in which the parent wood group and the parent wood group and the hydrophobic group and the hydrophobic group face each other. A schematic diagram of the small p-layer cumulative film thus prepared is shown in FIG. 2. In the figure, 8-1 is a parent wood group and 8-2 is a hydrophobic group.

On the other hand, the horizontal deposition method is a method in which the substrate is brought into horizontal contact with the water surface and transferred, and a monomolecular layer with hydrophobic groups facing the substrate is formed on the substrate. With this method, even if you accumulate
There is no change in the direction of the film-forming molecules, and an X-type film is formed in which the hydrophobic groups face the substrate in all layers.6On the other hand, a cumulative film in which the parent groups face the substrate in all layers is an X-type film. called a membrane.

The rotating cylinder method is a method in which a cylindrical substrate is rotated on the water surface to transfer a monomolecular layer onto the surface of the substrate.

The method of transferring the monomolecular layer onto the substrate is not limited to these methods, and when using a large GI substrate, a method of extruding the substrate from a substrate roll into an aqueous phase may also be used. Furthermore, the orientation of the aforementioned parent wood group and hydrophobic group toward the substrate is a general rule, and can be changed by surface treatment of the substrate, etc.

Other methods for creating a monomolecular film or a monomolecular layer stack include a sputtering method, a plasma polymerization method, a -1 molecular film manufacturing method, and the like.

Examples of materials that can be used as the substrate 1 include glass, metals such as aluminum, plastics, and ceramics. In the case of the transmission type shown in FIG. 1(A), it is preferable to use pressure-resistant and transparent glass or plastic, especially colorless or light-colored ones. Also,
If the substrate surface is insufficiently cleaned, the monomolecular layer will be disturbed when it is transferred from the water surface, making it impossible to form a good monomolecular film or monomolecular layer accumulation, so use a substrate with a clean surface. There is a need.

As the protective substrate 4, a transparent glass or plastic that is as pressure resistant as possible is suitable, and a colorless or light-colored one is particularly preferable. Although it is preferable to provide the protective substrate 4 in order to improve the durability and stability of the monomolecular film or the monomolecular layer stack, the protective substrate 4 can be It may or may not be provided.

The heating element 2 generates heat in various forms such as a dot matrix shape (dotted line shape), a dot line shape (dotted line shape), a line shape, an island shape, etc., and heats a monomolecular film or a monomolecular layer accumulation film by heat conduction. It is for the purpose of

Examples of the heat generating element 2 include those that utilize radiation heating such as infrared rays, and those that utilize Joule heat such as resistance heating. As the former, various inorganic or organic materials are suitable, such as alloys of Cd m Tba Fe, inorganic pigments such as carbon black, organic dyes such as nigrosine, and organic pigments such as azo. As the latter, metal compounds such as hafnium boride and tantalum nitride, and alloys such as nichrome are suitable. The thickness of the heat generating element 2 affects energy transfer efficiency and resolution. From these points of view, the preferred thickness of the heat generating element 2 is 1000 to 200 OA.
When the display element is of a transmission type, the heating element 2 is required to be transparent to visible light.

However, even if the heating element 2 is not specially provided, the substrate 1 can also serve as the heating element by selecting a substrate material having the above characteristics.

As the reflective film, a metal film, dielectric mirror, etc. using a metal material or a metal compound material with a high melting point is provided on the substrate l side from the monomolecular film or monomolecular layer cumulative film 3 by sputtering method, vapor deposition method, etc. Similarly to the heating element N2, the film can also serve as the substrate 1 by selecting a material that can reflect light.

The monomolecular film or monomolecular layer cumulative film on the substrate is sufficiently repellent and fixed and hardly peels off or peels off from the substrate. An adhesive layer can also be provided between the molecular layer stacks. Furthermore, the adhesive force can be strengthened by selecting the monomolecular layer formation conditions, for example, the hydrogen ion concentration of the aqueous phase, the ion species, or the surface pressure in the case of the LB method.

The above-mentioned change in physical properties in the heating section 5 particularly means a change in optical properties, for example, specifically a phase transition of a molecular assembly constituting a monomolecular film or a monomolecular layer accumulation film. ing.

This phase transition is caused by changes in temperature and pressure, etc. Temperature at which phase transition occurs, i.e. phase transition temperature (Tc)
is unique depending on the substance, and the organic compound forming a monomolecular film or a monomolecular layer cumulative film is in a crystalline phase below Tc,
Particularly preferred are those that undergo a phase transition to a liquid crystal phase at Tc or higher.

In addition, Tc is 0 which is suitable at 50-100°C.
For example, the Tc of dialkyl ammonium salt is 20°C to 60°C.
It is ℃. Typical Tc is Tc along with the alkyl chain length.
J: Seal. FIG. 3 schematically shows the phase transition phenomenon in the case of a dialkylammonium salt. It is more preferable to set the heating temperature to Tc or higher. Furthermore, by appropriately selecting the constituent molecules of the cumulative film, light scattering or opacity can be achieved by phase transition from a crystalline phase to a liquid crystalline phase, or from a certain type of liquid crystalline phase to a certain type of liquid crystalline phase. The present invention uses changes in physical properties due to phase transition such as light scattering for image formation.

The heating portion 6 of the heat generating element 2 generates heat and is heated to such an extent that the physical properties of the monomolecular film or the monomolecular layer stack 3 change as described above, thereby forming the heating portion 5. Since the other parts of the heating element 2 do not generate heat, there is almost no change in the physical properties of the corresponding monomolecular film or monomolecular layer stacked film 3 in the low temperature region, and the physical properties are approximately uniform. Even in the low-temperature region, it is actually heated by heat conduction from the heating part, etc., and the optical properties change, but from the perspective of changes in the heating part,
It is relatively negligible.

The illumination light 7 passing through the heating part 5 of the monomolecular film or monomolecular layer accumulation film is refracted, scattered, diffracted, etc. due to the refractive index gradient (gradient index) thermally generated in this part, and the illumination light 7 passes through the heating part 5 of the monomolecular film or monomolecular layer accumulation film. The optical path does not go straight through the monomolecular layer stack 11 but is refracted and the optical path changes. For this reason, the illumination light 7 that passes through the heating section 5 of the middle molecule 1 model or monolayer cumulative film and the illumination light 7 that does not pass through it are different from parallel light when they are emitted from the display element f-DE. Rather, their emission directions are different from each other. When the heating part 6 of the heat generating element 2 stops heating, the heating part 5 of the monomolecular film or the monomolecular layer stack is no longer cooled, and the direction of the illumination light 7 emitted from the display element 1'DE is all in the same direction. Become. Therefore, the illumination light 7 that passes through the high temperature region of the heating section 5 of the monomolecular film or monomolecular layer stack 3, and the illumination light 7 that passes through the low temperature region of the monomolecular film or monomolecular layer stack that is not the heating section. are optically identified.

Although the display element using the light modulation method according to the present invention can be used for direct viewing under certain conditions (for example, illumination with parallel light), it can also be used as a display device in combination with the imaging optical system described below. Its uses and utility value will expand. In the case of direct-view display using the transmission type display element F, the display is based on the difference in the amount of light that reaches an observation eye (not shown) positioned with respect to the direction of the light that has passed through the heating section 5 of the monomolecular film or monomolecular layer cumulative film. Pixel identification is possible. Using light scattering due to phase transition, direct viewing display is simpler and more effective.

In the case of a combination of a reflective display element and an imaging optical system described below, the imaging position of the heating unit 5 of the monomolecular film or monomolecular layer stacked film by the imaging optical system and the position that is not heated by the heating element 2 (A monomolecular film or a monomolecular layer cumulative film 3
Defocusing occurs because the imaging position of the low-temperature region portion (hereinafter referred to as non-heated portion) of the monomolecular film or monomolecular layer stack 81 film 3 (including the case where the monomolecular layer is preheated) differs by the imaging optical system. This allows the display points to be identified more clearly.

Therefore, by defocusing, a bright spot can be inverted and displayed as a dark spot. If the imaging optical system described below is not used, parallel light is used as the illumination light 7 to increase the display effect of the display element, and if a light-shielding grating as described later is attached, the display effect can be dramatically improved. do. In Fig. 1, the heating element 2 is in direct contact with the monomolecular film or the monomolecular layer accumulation @3 and heats the monomolecular film or the monomolecular layer accumulation J31 film. Heat generating element 2 near the membrane
The monomolecular film or monomolecular layer cumulative film 3 may be heated by heat conduction heating. For example, in FIG. 1(B), when the heat generating element 2 does not reflect light, a light-reflecting metal film is placed between the monomolecular film or monomolecular layer cumulative film 3 and the heat generating element 2.
An attraction mirror or the like may be interposed.

Note that in FIG. 1, the light beam incident on the display element DE is shown as parallel light in order to make the explanation easier to understand. However, this is not limited to parallel light; 1 Essentially, the light incident on the display element DE is a heat-generating element. A high temperature region of a monomolecular film or a monomolecular layer accumulation III 3, that is, a heating part 5, is formed in the optical path by the heat generated by the heating part 6 of No. It takes advantage of the fact that change occurs.

FIG. 4 is a cross-sectional view of a display element for more specifically explaining the principle of image formation of a display element using the light modulation method according to the present invention, and FIG. 4(A) is a cross-sectional view of a transmissive display element. , and FIG. 4(B) respectively show reflective display elements.

In the figure, 9 is a radiation absorbing layer that absorbs radiation IO and generates heat, and 3 is a monomolecular film or a monomolecular layer stack aM.

Reference numeral 4 indicates a protective substrate; in the reflective display element DE shown in FIG. 3(B), reference numeral 11 indicates a reflective film for reflecting the illumination light 7 used for display; This is a heating element layer for preheating the monomolecular film or the monomolecular layer stack 3. The reflective film 111 and the heat generating layer 12 are not necessarily required for the display element 〇H, but are provided as necessary. For example, when the radiation absorbing layer 9 has light reflectivity, the reflective fill is not used, and also when the radiation intensity is sufficiently strong, the heating element N12 is not necessary. However, since the heating element layer 12 will be described later, FIG. 4(B)
In the following description, it is assumed that the heating element M12 is not provided. Further, one heating element layer 12 is also provided in the transmission type display element shown in FIG. 4(A) as needed. The radiation absorbing layer 9 efficiently absorbs radiation, especially infrared rays, and generates heat, but it must be difficult to melt due to the generation of heat. f! r9 can be obtained by forming various inorganic or organic materials (including multilayer films). Incidentally, this radiation absorbing layer 9 itself has a film thickness number #L8! 4. Since the support function is poor, it is common to add a radiation-transparent support plate made of glass, plastic, etc. (not shown) as a substrate. There are various types of organic compounds constituting the monomolecular film or monomolecular layer stack 3 as described above, and those that are generally transparent to visible light are suitable, but those that are transparent to radiation such as infrared rays are suitable. Reference numeral 13 denotes a grating, which may or may not be translucent, and when the monomolecular layer cumulative film 3 is not heated, the light enters the display element and passes through the transmissive display element. In addition, the illumination light 7 reflected by the reflective display element and emitted from the display element is blocked. When the display element DH configured in this way is irradiated with radiation (particularly infrared rays) lO from the right side of the drawing, corresponding points on the radiation absorption layer 9 generate heat. When a part of the radiation absorption layer 9 generates heat in this way, the single F film or the monomolecular layer cumulative film 3 in the part that is in contact with or in close proximity to it is heated by thermal conduction, and the temperature rises. As a result, its physical properties change from before heating, and a heated portion 5 in a high temperature region of the monomolecular film or monomolecular layer stack 3 is formed. This heating section 5
When the illumination light 7 passes through the heating section 5, its optical path is changed by the mechanism described above in FIG. At least a portion of the illumination light 7 that has undergone this optical path change passes through the opening of the grating 13 when exiting the display element DE. On the other hand, all of the illumination light 7 that does not pass through the heating section 5 is transmitted through the grating 13.
Therefore, when viewing the display element DE through this grating 13, the illumination light passes through the monomolecular film or monomolecular layer cumulative film portion where the heating section 5 is formed, and the illumination light passes through the non-heating section. The illumination light 7 is identified.

Of course, if the illumination light 7 passing through the non-heating part is made to pass through the opening of the grating 13, the illumination light 7 passing through this part will be blocked by the grating 13 when the heating part 5 is formed. , there is also an aperture in the grating 13 through which the illumination light 7 does not pass, and a display element having the reverse form of the previous example is also possible.

Even if there is no grating 13, the direction of the illumination light 7 passing through the heating section 5 of the monomolecular film or monomolecular layer stack 3 and the direction of the illumination light 7 passing through the non-heating section are the same as those emitted from the display element DE. Since the illumination light beams 7 are different from each other, the illumination light beams 7 can be optically distinguished when viewed in the direction in which either one of the light beams comes.

Note that when irradiating the display element DE with the radiation 10,
It is possible to irradiate in a pattern corresponding to a predetermined image, or it is possible to use a laser light source to irradiate a large number of beams at once in a dot shape using the radiation 10 as a beam. Alternatively, a method may be adopted in which the l-line beam is scanned by radiation absorbing e9-hi.

In addition, the direction in which the radiation 1O is irradiated is not limited to the one illustrated example in the case of the transmission type display element DE shown in FIG. 4(A). When the radiation 10 passes through the layer accumulation film 3, it is also possible to irradiate the radiation io from the left side of the drawing. Incidentally, the display is erased naturally by cooling the heating section 5 of the monomolecular film or the monomolecular layer stack 3.

In 1-, a method for forming display pixels by radiation heating has been described, but in the present invention, the radiation absorbing layer M9 in FIG. Alternatively, it is also possible to bring a heating element f- (not shown) into close contact with this to heat the monomolecular film or monomolecular single-layer stacked a film by conduction.

In the present invention, in order to further enhance the discrimination effect of display pixels, a visible light reflection layer 1i111 may be separately interposed between the radiation absorption layer 9 and the monomolecular film or monomolecular layer ms as described above. . Such a reflective film 11 needs to be formed of a high melting point metal material or metal compound material that does not melt itself during heat conduction.

In order to obtain an effective display in a display element using the present invention, it is necessary to use a monomolecular film or a monomolecular layer accumulation Il! It is necessary to heat the surface in contact with the radiation absorption layer 9 in No. 3 and its vicinity, but
It is not a requirement that the heating extends to the portion of the monomolecular film or the monomolecular layer stack 3 that is in contact with the protective substrate 4 and its vicinity. However, the higher the temperature of the surface of the monomolecular film or monomolecular layer cumulative film 3 in contact with the heating surface of the radiation absorbing layer 9 and its vicinity is higher than the temperature of the monomolecular film or monomolecular layer cumulative film [3] in the surrounding area, Experiments have shown that the display contrast of element DE is improved. Furthermore, if this is actively utilized, it becomes possible to display halftones by varying the amount of heat for heating the monomolecular film or the monomolecular layer stack III 3.

Note that the smaller the diameter of the irradiation spot for irradiating the radiation absorption layer 9 with the radiation IO, the better the contrast of the display. The spot diameter (diameter) of suitable radiation lO is between 0.5 and 100
The appropriate position is

However, even if the radiation absorbing layer 9 is irradiated with the radiation 10 of a rectangular beam having a width of 2 iu and a length of ioms, a displayed image can be obtained. The heating section 5 of the monomolecular layer stack includes the latter range.

However, even if the heating part 5 of a monomolecular film or a monomolecular layer accumulation film is not very small, the temperature of the heating surface is not like -. If a difference occurs in the direction of , a discrimination effect occurs. Therefore, in the present invention, the heating section 5 of a monomolecular film or a monomolecular single-layer cumulative film
is not limited to a minute range.

In the display element using the uninvented method, as shown in FIG. 4(B), in order to greatly accelerate the formation speed of the heating portion 5 of the monomolecular film or monomolecular layer cumulative film as the display pixel, When a reflective film is not used, the radiation absorbing layer 9 and the reflective film 11 are placed between the radiation absorbing layer 9 of the display element DE and the monomolecular film or the P-layer cumulative film 3 when a reflective film is used. In some cases, it may be desirable to provide a heating element layer 12 that generates heat by Joule heat between the two and preheat a predetermined monomolecular film or monomolecular layer stack. At this time, if the radiation absorbing layer 9 or the reflective film 11 is a conductor, it is desirable to provide an insulating layer (not shown) between them and the heat generating layer 12.

As such a heating element layer 12, a dowel, a linear heating element corresponding to one or more scanning lines of a radiation beam, a grid-shaped heating element (none of which are shown), etc. are suitable. When the heating element layer 12 is a linear heating element, it is thought that good display results can be obtained because the heating portion is minute in the width direction. At this time, the radiation absorption layer 9 is irradiated with radiation lO and the heating element layer 1
It is preferable to synchronize the heating of the monomolecular film or monomolecular layer stack 3 by 2. Examples of the material for such a heating element layer 12 include metal compounds such as hafnium boride and tantalum nitride, and alloys such as nichrome.

Furthermore, in the display element using the present invention, a structure of the display element in which a corrosive component comes into direct contact with the monomolecular film or the monomolecular layer stack may shorten the life of the element. Therefore, it should be avoided. This is because, in a configuration in which a corrosive component is in contact with a single monomolecular or monomolecular layer stack, chemical corrosion, thermal oxidation, etc. occur, and the display element is often damaged or deteriorated.

Therefore, in such a case, it is desirable to form a corrosion-resistant protection pattern (not shown) at the interface between the monomolecular film or the monomolecular layer stack and the corrosive component.

Examples of the material for this protective film include dielectric materials such as silicon oxide and titanium oxide, heat-resistant plastics, and the like. A reflective film may also serve as this protective film.

Note that when a metal or the like is used as the radiation absorbing layer 9, the radiation absorbing layer 9 is generally formed on a radiation transparent support plate as a substrate, so the radiation absorbing layer 9 is heated. When this happens, there is no need to worry about it being oxidized by outside air.

If the radiation absorption rate of the radiation absorption layer 9 is not perfect,
An anti-reflection coating (not shown) is provided on the side to which the radiation 10 is irradiated.
By applying this, the absorption rate of the radiation 10 of the radiation absorption layer 9 can be significantly increased.

Next, the light pulp type projection device will be explained with reference to FIGS. 5 and 6. Light pulp means something that controls or adjusts light, and therefore, light from an independent light source is transferred to an appropriate medium (in the case of the present invention, a monomolecular film or a monomolecular layer stack of a display element). This includes all displays that are controlled by a computer and projected onto a screen. Compared to self-luminous displays such as cathode ray tubes, this method can theoretically increase the size and brightness of the display screen by increasing the intensity of the light source used, so it is especially suitable for large screen displays that require a large amount of light. suitable for Among them, the one shown in Fig. 5 is also called schlieren light pulp, and the control medium, monomolecular film or grass F, is produced according to the input signal.
This is a method in which patterns with different refraction angles, diffraction angles, or reflection angles or scattering patterns of light are created in the layered a-film, and a Schlieren optical system is used to convert the changes into bright and dark images, which are then projected onto a screen.

FIG. 5 is a schematic configuration diagram for explaining the basic principle of the display device. The image of each slit of the first grating 13a is transferred to the I of each bar of the second grating 13b by the Schlieren lens 14.
; They are arranged so that people are imaged so that they are blocked from light. The monomolecular film or monomolecular layer multilayer M film as a medium of the transmission type display element DE placed between the schlieren lens 14 and the second grating 13b is not heated, and its physical properties are not uniformly smooth. If there is, all the incident light that has passed through the first grating 13a will be blocked by the second grating 13b and will not reach the screen 15. However, when a portion of the intermediate molecular film or monomolecular layer cumulative film 3 of the display element DE is heated by the heating element and reaches a high temperature, a heated portion 5 of the monomolecular film or monomolecular single layer cumulative film is formed. Since the optical path of the light passing through changes as described above, the incident light 16 that has passed through it changes to the second grating 13.
It reaches the screen 15 through the gap (opening) of the second lattice 13b without being obstructed by the second grid 13b. Therefore, display element D
If the imaging lens 17 is arranged so that the heating surface heating the heating section 5 of the monomolecular film or monomolecular layer cumulative film of E or the medium surface in the vicinity thereof is imaged on the screen 15, the display element D
A contrast image corresponding to the amount of temperature change of the monomolecular film of E or the cumulative film of overlapping F layers is obtained on the screens 15, , Jl. Note that the first and second gratings 13a and 13b used for this
The opening may be linear or dotted.

FIG. 6 is a schematic diagram of a transmission type light valve type projection device, and shows an example of the arrangement of signal input means for a transmission type display element. 13a is the first case 7-, DE is the transmission type display element, 14 is the Schley lens, 13b is the second case-4,
Reference numeral 17 represents an imaging lens, and reference numeral 15 represents a screen, the construction of which is similar to that of the display device shown in FIG. Signal light of radiation (mainly infrared rays) 10 modulated through a laser light source and a light modulator (not shown) is horizontally scanned by a rotating polygon mirror serving as a horizontal scanner 18, passed through a lens 20, and then rotated as a vertical scanner 19. The cold filter 21 is vertically scanned by a polygon mirror or a galvano mirror.
The radiation is reflected by the radiation absorbing layer 9 of the transmission type display element shown in FIG. A two-dimensional image of the heating portion 5 of the molecular film or monomolecular layer cumulative film is formed. On the other hand, since the incident light 16 that has passed through the first grating 13a passes through the cold filter 21, the monomolecular film or monomolecular layer cumulative film of the display element DH is formed on the screen 15 by the mechanism described above in FIG. A two-dimensional visible image corresponding to the heating section 5 is formed. Of course, the radiation absorbing layer of the display element DE used in this figure must be transparent to visible light.

In addition, semiconductor laser array f or light emitting diode array (
If a horizontal scanner is used, the horizontal scanner can be omitted. Also cold filter and galvano mirror
may be shared.

FIG. 7 is a block diagram of a light pulp type projection device as a display device using the light modulation method according to the present invention.

22 is a video generation circuit that generates a video signal; 23 is a W control circuit that controls the video signal and supplies this signal to the video amplification circuit 24 and the horizontal and vertical drive circuits 25; 26 is a laser light source; 27 is a laser light source The light modulated by the optical modulator 27, which modulates the laser beam from the image amplifier circuit 24 according to the signal output from the image amplification circuit 24, is transmitted to the horizontal scanner 18.
Alternatively, it enters the vertical scanner 19. Further, the horizontal scanner 18 and the vertical scanner 19 operate in response to drive signals synchronized with the image number 44 from the horizontal and vertical drive circuits 25, respectively. The configuration of the other portions within the broken line is the same as the configuration described above, so the description thereof will be omitted.

The video signal output from the video generation circuit 22 is sent to the control circuit 2.
3 and is amplified by the video amplification circuit 24. The optical modulator 27 is driven by input of the amplified video signal and modulates the laser beam emitted from the laser light source 26. on the other hand,
A horizontal synchronization signal and a vertical synchronization signal are output from the control circuit 23 and drive the horizontal scanner 18 and vertical scanner 19 via the horizontal and vertical drive circuits 25, respectively. In this way, a thermal two-dimensional image is formed within the monomolecular film or monomolecular layer stack of the display element DE. The subsequent configuration operations within the broken line are as described above and will be omitted here for simplicity. Note that when receiving TV main radio waves, a receiver may be used in place of the video generation circuit 22.

FIG. 8 is an example of a color display element using the light modulation method according to the present invention, and for convenience of explanation, the upper half is a transmissive display element and the lower half is a reflective display element f, and is shown in cross section. This is an indication. 9 is a radiation absorption layer, 11 is a reflective film, which is not provided in the transmission type display element shown in section 42 of this figure, and 28 is a color mosaic filter, its specific structure and manufacturing technology. As for the
Since it is as explained in detail in Japanese Patent Publication No. 094 and Japanese Patent Publication No. 52-36019, the detailed explanation will be omitted here as these are cited.

3 is a monomolecular film or a monomolecular layer cumulative film, 4 is a protective substrate, 2
8 indicates a color mosaic filter.

In the illustrated example, the monomolecular film or monomolecular layer cumulative film 3 in contact with the red filter portion (R) of the color mosaic filter 28 is heated by thermal conduction by the 8M edge wire absorption 9 that absorbs the radiation io, and then When a heating section 5 of a monomolecular film or a monomolecular layer stack is generated, the collimated illumination light 7 reflected by the reflective film 11 or transmitted through the radiation absorption layer 9 is heated to a monomolecular film or a monomolecular stack. By passing through the heating section 5 of the 8N film, due to the mechanism described above, the optical path of the light as shown by the two-dot chain line, which is different from the optical path of the light that has passed without the heating section 5 as shown by the broken line, is created. 1 through a curved optical path
The light is emitted outside the display element DE. When white light enters the red filter section (R'), the transmitted light or reflected light that comes out from the display element DE is only light that makes red visible (hereinafter referred to as red light). The path of the light passing through the blue filter section (B) and the green filter section (G) is also the same as the path of the light passing through the red filter section (R). However, in the case of FIG. 8, only the light rays from the green filter section (G) that do not pass through the heating section 5 are shown.

Furthermore, when the incident light is white light, the light that has passed through the blue filter section (B) is only the light that makes blue visible (hereinafter referred to as blue light), and the light that has passed through the green filter section (G). This light is the light by which green is perceived (hereinafter referred to as green light).
When the display element PDE is viewed in the direction of the light passing through the heating section 5 of this monomolecular film or monomolecular single-layer cumulative film, an observer (not shown) can see the It is something that allows you to see colors. For example, in the red filter portion (R), green filter portion (G), and blue filter portion (B) of the adjacent color mosaic filters 28, the monomolecular film or grass F layer accumulation +t! i! 3 and heating section 5.
When the color is formed, an observer (not shown) can see a white color.

Furthermore, as explained in FIG. 4, the display element r-DE
By passing only the light that passes through the heating section 5 of the layer stack film through the opening of a light-shielding grating (not shown), a more clear pseudo color is produced by the additive coloring method. You can get the display.

FIG. 9 is a cross-sectional view of a meq display element using the light modulation method according to the present invention, FIG. 9(A) is a transmissive type display element, and FIG. 9(B) is a reflective type display element. are shown respectively.

In the figure, 3 is a monomolecular film or a monomolecular layer stack, 4 is a protective substrate, and 28 is a color mosaic filter, which have the same functions as those explained in FIGS. 1 and 4. It is an element that has. 29 is a thermally conductive insulating layer, and a plurality of heating resistance wires 30 and 31 as heating elements are provided on both sides of the layer.
2 in a matrix shape so as to intersect each other with an insulating layer in between.
Next is the arrangement. ■ is these heating resistance wires 3Q, 3
This is a substrate that serves as a support plate for I and the insulating layer 28. In the case of the transmission type display element DE shown in FIG. 9(A), these heating resistance wires 30, 31. The substrate 1 and the insulating layer 28 are transparent, and for example, the heating resistance wires 30 and 31 are made of transparent P! j, It is composed of a membrane. In these display elements ICE, only when the predetermined heat generating resistance wires 30 and 31 are both selected and generate heat, the monomolecular film or the monomolecular layer cumulative film 3 is formed in the intersection area between the two.
The heating part (not shown) in the high temperature area that can be displayed inside is the type 1&J.
It is designed so that it can be used. The color mosaic filter may be provided at least at the intersection of the heating resistance wires 30 and 31. Further, as described above in FIG. 4, the reflective film 11
is provided as necessary.

Next, use Figure 10 to display such a display! An example of matrix driving of '7'- will be explained in more detail.

In the figure, DE indicates a display element, and this display element DE has the same detailed configuration as explained in FIG.
Xs, Xn, Xo, Xp row axis heating resistance wire (
These are called row lines) and the column-axis heating resistance wires of Yc, Yd, Ye (these are called column lines), etc.
One of IYc, Yd, and Ye is connected to a common DC power supply, and the other is connected to the emitter of each transistor Tr.
It is connected to the collector side of l-Tr3.

Row lines XI, Xll, Xn, Xo, Xp 2 sequentially, add? h
When tE is applied, the monolayer or monolayer cumulative film (not shown) corresponding to these row lines is
are sequentially heated linearly, and 3. Since the degree of heating is set to be less than the protection value of the heating display for a monomolecular film or a monomolecular layer cumulative film,
ll! On the other hand, in synchronization with the application of a heating current signal, video signal pulses are applied to the base sides of the transistors Trl to Tr3 whose emitters are grounded, and the transistors Trl to Tr3 are heated. T
By turning on r3, these transistors Tr1
- A predetermined video signal is applied to the six column lines Yc, Yd, and Ye connected to Tr3, respectively. By applying this video signal, column conduction @ Y c + Y d + Y
The monomolecular film or monomolecular single-layer cumulative film corresponding to e is linearly heated. As a result, at the intersection of the row line and the column line where the heating current pulse and the video signal are synchronized, heat is generated additively from both, and the degree of heating of the fluorescent molecule film or the single-layer monolayer film increases. When the display threshold is exceeded, a heating portion 5 of a monomolecular film or a grass P-layer a-layer film is formed at the intersection of the selected row line and column line.

Note that in the above example, even when the driving method is changed as follows, images can be formed in exactly the same way. That is, even if a modification is made in which a video signal is applied to the row lines and a heating current signal is applied to the column lines, the effect is exactly the same. In this way, the display element DE illustrated in FIG. 9 also enables matrix driving. If the thickness of the monomolecular film or monomolecular layer cumulative film of the display element DE is very thin, heat-generating resistance wires arranged in stripes are installed on both the protective substrate side and the substrate side as shown in the following. Depending on the situation, the following effects will occur.

■ The manufacturing process becomes simpler and the yield rate improves.

<*I @Molecular film or monomolecular layer cumulative film is heated from both sides, so thermal efficiency is good.

etc.

In order to enhance the heat dissipation effect of the heat-generating resistance wire, it is desirable to separately provide a heat radiating plate. The substrate 1 (FIG. 9) can be used as a substitute for this heat radiating plate.

Note that it is not necessary that all of both signal lines be formed by heat-generating resistors; rather, it is intended to save energy."From the second, only the intersections of the row lines and column lines are formed by heat-generating resistors, and the rest are formed by AI. It can be said that it is preferable to use a good conductor such as, but this has the disadvantage of complicating the manufacturing process.

Further, another example of a heat generating element as a heat generating element for configuring a display element suitable for matrix driving as shown in the 1θth figure will be explained with reference to FIG.

FIG. 11 is an external perspective view schematically depicting a partial area of the heating element. In FIG. It is obtained by forming a planar film of hafnium chloride, kunthal nitride, etc.). Although not shown, this resistance layer 32 naturally extends downward in the drawing. Also, 33a, 33b, 33c
m, 33d are all column conductors, 34a, 34b,
34c are all row conductors. All of these conductive wires are made of good conductors such as gold, silver, copper, aluminum, etc. (Although not mentioned, the conductive wires are generally covered with a 5i07 insulating film (not shown). be)
. In the illustrated heating element, for example, when the column conductor 33b and the row conductor 34c are selected and a voltage is applied to them, the part of the resistance layer 32 corresponding to the intersection 35 of the two is not energized. It causes fever.

In this way, any (row/column) intersection of the row conductor and the column conductor can be heated.

Therefore, the heating element shown in the diagram is connected to the heating resistance wire 30.3 in the PI3 diagram.
In the display element incorporated in place of the heat generating element consisting of the heat generating element 1 and the insulating layer 29, a dot matrix image can be displayed using a matrix driving method similar to the example shown in FIG.

By the way, in the heating element shown in FIG. 11, the heating resistance layer 32 may be divided and provided only at the intersection of the first row conductor 34 and the column conductor 33 (the conductors may be insulated from each other in other areas). This is possible, and in such a configuration (FIG. 12), it is possible to substantially prevent the occurrence of losstalk, which is inconvenient for image formation faithful to the signal.

In the example of FIG. 12, the row conductors 34a, 34b...
(hereinafter referred to as row conductors 34) and column conductors 33a, 33b.
... (hereinafter referred to as the row conductor 33) is SiO+, Si3
Although it is arranged through an insulating film (not shown) such as N4, the insulating film in the intersection area of the row conductor 34 and column conductor 33 is removed.
Instead, heat generating resistors 32a, 32b, ... (
Hereinafter, a heating resistor 32) is embedded.

Next, in FIG. 13, the heating element as the heating element shown in FIG. 12 is connected to the heating resistance wire 30.3 shown in FIG.
An example in which a display element incorporated in place of the heat generating element consisting of the heat generating element 1 and the insulating layer 29 is driven in a matrix will be described in more detail. The needle axis selection circuit 36 is a row axis drive circuit 37a.
, 37b (hereinafter referred to as the row axis drive circuit 37) by a signal line, and each output terminal of each row axis drive circuit 37 is connected to the respective row conductor 34.
is combined with There are various types of connections between the output terminals and the row conductors 34, but in order to explain the basic aspect in this specification, there are as many output terminals as there are row conductors 34, and one output terminal is Assume that it is connected to the - row conductor.

Dynamic axis selection circuit 38, dynamic axis drive circuits 39a, 39b,...
The same applies to the relationship between the column conductor 33 (hereinafter referred to as the first column axis drive circuit 38) and the column conductor 33. Image control circuit 4
0 is electrically connected to the needle axis selection circuit 36 and the moving axis selection circuit 38 by a communication wire. The image control circuit 40 outputs an image control signal to instruct the 1-row axis selection circuit 36 which nail axis to select, and the same applies to the dynamic axis selection circuit 38. That is, the needle axis selection circuit 36 is activated by the image control signal from the image control circuit 40 to the row axis drive circuit 37.
For example, if the needle axis selection circuit 36 selects the row conductor Xp, it will issue an Xp row selection signal, and in response, the The shaft drive circuit 37Xp also inputs a needle shaft drive signal to the row conducting wire Xp. On the other hand, the video signal which is one of the image control i@ signals from the image control circuit 40 is sent to the moving axis selection circuit 38.
For example, if the dynamic axis selection circuit 38 selects the column conductor Ye, the dynamic axis selection circuit 38 selects a predetermined dynamic axis (column conductor) in response to the command. For example, if the dynamic axis selection circuit 38 selects the column conductor Ye, the dynamic axis drive circuit 39
E receives the Ye column selection signal issued from the dynamic axis selection circuit 38 and turns on the column conductor Ye (conductor n).

If the selection of the nail shaft and the selection of the moving shaft are done in synchronization, in this example, it is the road! Intersection point of JaXp and column conductor Y8 (selected point;
A current flows through the heating resistor located at Xp-Ye), generates Joule heat, and a heated portion is formed in a monomolecular film or a monomolecular layer accumulation film (not shown). Although a leakage current flows also at the non-selected points, the current value is less than the current value for forming the heating part of the monomolecular film or the monomolecular layer stack, so that no heating part is formed in the monomolecular film or the monomolecular stack stack. Further, by providing the heating resistor with a diode function, the leakage current can be made even weaker.

In this way, in the same way as explained in FIG. 1O, in FIG. 13, line-sequential scanning is performed using the needle shaft drive signal, and a moving shaft selection signal is output in synchronization with the needle shaft drive signal, and the moving shaft drive circuit A two-dimensional image display can be performed by bringing the selected column conducting wire 33 into a conductive state via the line 39. Note that the moving axis selection circuit 38 outputs a moving axis selection signal in response to a command by a video signal. At this time, the direction of the current flowing through the heating resistor does not matter. Such a row and moving axis selection circuit 3
The rows B and 38 and the dynamic axis drive circuits 37 and 33 are constructed by known techniques using shift transistors, transistor arrays, and the like.

In addition, in the matrix drive display method using the heating elements described above, the display element DE having the configuration shown in FIG. 9(B) as described above in FIG. 4(B) also
If necessary, corrosion-resistant silicon oxide may be added between the monomolecular film or the monomolecular layer cumulative film 3 and the reflective film or the monomolecular film or the monomolecular layer cumulative film 3 and the heating element (for example, the heating resistor vi30 thereof). By interposing a film or a silicon nitride film, reaction corrosion between the monomolecular film or the monomolecular layer stacked film and these can be appropriately prevented.

In addition, the red filter part (R), the green filter part (G), and the blue filter part (B) of the color mosaic filter shown in FIG. In the display element DE, the heat generating resistance line 3
0 and 31 (or, in the case of the heating element shown in FIG. 12, the heating resistor 32), the same structure as the example shown in FIG. 8 can be obtained. Of course, by employing this, color display can be performed using the same principle as in FIG. 8 with a display element using the heating elements shown in FIGS. 9 and 12, respectively.

Such a matrix drive type display element can also be applied to the light valve type projection device shown in FIGS. 5 and 6. In addition to this, the present invention also includes photosensitive molecules, strong a! ! By combining functional molecules such as electrical substances and complexes with surface-active substances, it is also possible to obtain optical elements having monomolecular films or monomolecular layer stacks that can be controlled by light, electricity, ions, etc.

The main effects of the present invention are summarized as follows.

(1) 1 of the heating part of a minute monomolecular film or a monomolecular layer cumulative film
Since these pixels can be arranged in high density as display pixel units, high resolution images can be displayed.

(2) Still images,
Or you can easily display videos including slow motion.
Ru.

(3) Multicolor display and full color display can be easily implemented.

(4) Since the structure of the device is relatively simple, productivity is excellent, and the device has high durability and reliability.

(5) Applicable to a wide range of drive systems.

(6) Since a monomolecular film or a monomolecular layer cumulative film can be produced using the Langmuir-Prodgett method, it is extremely easy to increase the area.

(7) Since no liquid such as liquid crystal is used, manufacturing is easy and safe.

(8) Since the phase transition temperature is not so high, less power is required for the display element, etc., and the power supply unit, that is, the light modulator and the display device, can be made smaller.

(9) Optical elements using the light modulation method according to the present invention include:
Application is not limited to display devices, but can also be applied to rice and wheat 211 units used for electrophotography and the like.

(10) Single molecule I! Or, when utilizing the phase transition of a monomolecular layer cumulative film, depending on the structure of the molecules constituting the cumulative film,
There are some that maintain a phase transition state for a long time. In such a case, the optical element according to the present invention includes a recording device W (material),
It can also be used as a storage device (material).

In order to explain the present invention more specifically, Examples are given below.

Example 1 A display element was manufactured as follows.

A film of 1500 mm thick was deposited on the surface of a 50 mm square glass substrate using a sputtering method.
The radiation absorbing layer 9 was formed by depositing a layer of iron (TVram/iron). In order to prevent oxidation of this Gd-TbeFe layer,
The L was coated with a 5i02 overcoat.

Next, after thoroughly cleaning the substrate described in 1.
(Trough-4) in the aqueous phase. Then, distearyldimethylammonium bromide 5X]0
1 ml of chloroform WlO containing 'matwo was added dropwise into the aqueous phase using a syringe. After volatilization of chloroform, the surface pressure of the monomolecular layer of distearyldimethylammonium bromide was adjusted to 30 dyne/cm2, and by repeating pulling and dipping at a speed of I cm/win, the surface of the 5i02 film was reduced to 5. A Y-type cumulative film of ~IO μm was formed by iris deposition, and a glass substrate was placed over the second layer as a protective substrate 4. Furthermore, 5 pieces/ff1I! are placed closely or close to the outer surface of the glass substrate 4! A linear grid was installed.

A semiconductor laser that emits light at a wavelength of 83Qn+w was used as a radiant heat source. The disterial dimethyl ammonium bromide layer was heated to 60° C. or higher by irradiation with a semi-dynamic laser, and a phase transition occurred at that time, causing scattering, and a display effect was confirmed.

Example 2 The display element effect was manufactured as follows.

On the surface of a 50 mm square glass substrate, a 1500 mm thick incidium tin oxide (IT-0) was applied by sputtering, and a linear pattern of 10 lines/l was formed by zero-order photoetching. As a result, a transparent heat generating resistance wire 31 is obtained. Note that the etching solutions for ■・T・0 include ferric chloride aqueous solution and 1! ! 0 using a mixture of acids
Next, a 2000-thickness 5i02 film was deposited on the surface of the glass substrate on which the transparent heating resistance wire 31 was placed by sputtering to form an insulating layer 2B. Furthermore, a film T-0 with a film thickness of 1500λ was added thereon by photo-etching.

A transparent heating resistance wire 30 was formed to be perpendicular to the transparent heating resistance wire 31.

Next, a cumulative film of distearyldimethylammonium bromide was formed on the above substrate to a thickness of 5 to 10 μm according to the same conditions and steps as in Example 1, and a glass substrate 4 was placed over it.

A semiconductor laser that emits light at a wavelength of 830 nm was used as a radiant heat source.

It was confirmed that when driven in combination with an appropriate Schlieren optical system, a predetermined light modulation effect can be obtained. That is, when a predetermined portion of the distearyldimethylammonium bromide layer was heated to 80° C. or higher by irradiation with a semiconductor laser, a phase transition occurred and light scattering occurred.

[Brief explanation of drawings]

FIG. 1(A) is a cross-sectional view of a transmissive display element using the light modulation method according to the present invention, and FIG. 1(B) is a cross-sectional view of a transmissive display element using the light modulation method according to the present invention. FIG. 2 is a schematic diagram of a monomolecular layer stack, FIG. 3 is a schematic diagram of a phase transition phenomenon in a monolayer stack, and FIG. 4 is a schematic diagram of a monolayer stack.
FIG. 4A is an explanatory diagram of the principle of image formation of a display element using the light modulation method according to the present invention, and FIG. 4(A) shows a case of a transmissive display element. FIG. 4(B) shows the case of one reflective display element. 5 and 6 are schematic configuration diagrams of a light valve type projection device incorporating a display element using the light modulation method according to the present invention. FIG. 7 is a block diagram of a light valve type projection device as a display device using the light modulation method according to the present invention. FIG. 8 is a cross-sectional view of a color display element using the light modulation method according to the present invention, and FIG. 9 shows an example of the structure of a matrix- or matrix-driven display element using the light modulation method according to the present invention. FIG. 9(A) is a cross-sectional view of a transmissive display element, and FIG. 9(B) is a reflective display element. Fig. 1θ is a schematic explanatory diagram of an image forming method using the light modulation method according to the present invention, Figs. 1 is a block diagram of a matrix drive display device. DE; Display element 1: & plate 2 - Heat generating element 3: Monomolecular film or multilayer stacked AlFJ 4: Protective substrate 5: Heating section of monomolecular film or stacked monomolecular layer film 6: 9. Heating part 7 of heat source: illumination light 8-1: parent wood base 8-2 = hydrophobic group 9: radiation absorption layer 10: radiation 11: reflective film 12: heating element layer 13: lattice 13a: first lattice 13b: 2i'52 grating 14: Schlieren lens 15 Niscreen 16: Incident light 17: Imaging lens 18: Horizontal scanner lθ: Vertical scanner 20: Lens 21: Cold filter 22: Image generation circuit 23: Control circuit 24: Image amplification Circuit 25; Horizontal drive circuit, vertical drive circuit 26: Laser light source 27: Light modulator 2nd: Color mosaic filter 29: Insulating layer 3 (1, 31 + heating resistance wires 32, 32a, 32b, 33c, -: heating resistance layer 1 Heat generating resistor 33. 33a, 33b, 33cm: Column conductor 34
．． 34a, 34b, 34c...: Row conductor 35: Crossing portion 36-Needle axis selection circuit 37.37a, 37b-: Needle axis drive circuit 38: Column axis selection circuit 39.39a, Hb-: Outer axis drive circuit 40 : Image control circuit drawing Z (no change in content) (A') (B) Fig. 1) E Fig. 2 3 Cleaning of prison drawing (no change in content) (1121cm'□'1
13121) Figure 4 Figure 5 Figure 6 District Figure 7 (A) (s) Figure 9 Proceedings Amendment (Method) April 2b, 1980 Commissioner of the Patent Office Sir 1, Indication of the case 1988 Patent application No. 234352
No. 2, Name of the invention Light modulation method 3, Relationship with the person making the amendment 111 Patent applicant (100) Canon Co., Ltd. 4 Agent address 5-9-20, 1-9 Akasaka, Minato-ku, Tokyo Order for amendment 's Profit Shipping 1': March 27, 1981 6, drawings subject to amendment 7, contents of amendment! Figure 81 and Figures 4 to 13 are corrected as shown in the attached sheet. (
(No change in content)

Claims (1)

[Claims] A monomolecular film or a monomolecular layer stack consisting of organic compound molecules having a hydrophobic part and a parent part is heated by a means that generates heat in response to an input signal to cause a phase transition, and light passing through the film is heated. A light modulation method characterized by performing light modulation by scattering or changing the optical path.