JP2003255239A - Reflection type image display device and image processing system provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflection type image display device and an image processing system having the same, which hardly bring about distortion of a reflected image due to variance in reflection angle of individual pixels and are superior in gradation representing performance and are free from flicker. <P>SOLUTION: The reflection type image display device has a visible light- transmissive plane plate, a plurality of minute elastic bodies which are arranged in an array on the side opposite to the illuminating light incidence side of the visible light-transmissive plane plate and have the surfaces having a property of reflecting visible light, and minute distance driving devices which are arranged at the rear of the minute elastic bodies and individually press the minute elastic bodies in accordance with the signal quantity to bring them into close contact with the visible light-transmissive plane plate. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection type image display device and an image processing system having the reflection type image display device. As a reflective image display device,
There is a liquid crystal color panel used in a liquid crystal projector, and further, there is a reflective image display device called a micro mirror device (DMD) manufactured by Texas Instruments Incorporated. The present invention aims to improve such an image display device.

[0002]

2. Description of the Related Art Conventionally, in image display devices,
Issues have been noted regarding the brightness of the projected image, the cost of the device, the size, or the image quality. The most common type of device is a so-called liquid crystal projector. The liquid crystal projector uses a liquid crystal panel for image display in which RGB three colors are separated. The light source light is divided into three RGB light beams and transmitted through the liquid crystal panels of the respective colors, and then other light flux combining means such as a cross dichroic prism. After the three color images are combined into a single optical path using
Project this. The two-dimensional image display panel device used in this case is a well-known liquid crystal display panel. Generally, the liquid crystal display panel used in the device is a transmissive liquid crystal, and the transmittance for transmitting the amount of light from the illumination is changed by adjusting the rotation angle of polarized light for each pixel built in the panel. It is possible to

On the other hand, there is a reflective two-dimensional image display panel device called a micromirror device (DMD) manufactured by Texas Instruments Incorporated. As shown in FIG. 6, this is composed of minute substantially square mirror arrays arranged at a very minute pitch of about 17 microns pitch,
Micromirrors corresponding to pixels are arranged by the number of pixels such as VGA and S-VGA. It is possible to individually change the angle of each mirror of this element in two ways.

As a result, the illuminating light beam is reflected in a predetermined direction by using the minute mirror as one pixel. By holding the angle of the minute mirror corresponding to the pixel not to be displayed at the other angle, the light flux reflected by the mirror is reflected in the other direction and thus is not displayed as an image.
On the other hand, it is possible to express halftones by reciprocating the mirror between two states at high speed. By setting the length of time that the image is stopped in one of the two states, you can freely set the ratio of the length of time that a specific pixel on the displayed image becomes bright or dark. This allows halftone expression.

[0005]

However, the liquid crystal display panel can be used only for the linearly polarized light polarized in a specific direction of the illumination light flux, and therefore the polarization direction of the incident light on the panel is previously determined. It is necessary to align in one direction. Otherwise, about half of the amount of illumination light is wasted when the liquid crystal panel enters. In order to prevent the waste, a polarization conversion element that combines polarization prisms for aligning the polarization direction of illumination light in one direction is used, but even in that case, when manufacturing a polarization conversion element having a complicated structure. Requires precision processing technology, and costs parts. There is also a reflective LCD panel,
Since this also uses liquid crystal, the loss due to polarized light is essentially unchanged.

Further, even in the case of a DMD element which does not use liquid crystal, there are the following problems. Originally, since there are only two holding positions of the mirror, there are only two light amounts of the projected image, 1 or 0. Since it is inconvenient when displaying the halftone component, the micromirror is continuously driven at a high frequency, the time when the light amount comes and the time when it does not come are alternately switched, and the ratio of the length of the time period is changed to change the halftone component. Was being displayed. Therefore, in the case of a normal image display, it is necessary to perform continuous inversion driving almost always, and there is a concern about the durability and reliability of the element.

Further, in the case of the same element, the micromirrors corresponding to the respective pixels display images by changing their inclinations respectively, but all angles of tens of thousands of mirrors must be accurately aligned. If the angle partially varies, the image will be distorted. Further, in the case of displaying the above-mentioned halftone, when focusing on a certain pixel, the light spot of the pixel reciprocates while traveling across the screen from a predetermined position on the screen to a predetermined position outside the screen. You will be exercising. Of course, the display gradation of the pixel is determined according to the time when the pixel is stationary at a predetermined position on the screen, but when the brightness of the pixel disappears from the screen, the pixel remains bright on the screen. It's inevitable to move around. It moves at a fairly high speed, but in any case it is nothing but accelerating from a stationary state, so it is considered that this is perceived as flicker in the low speed range. In addition, in an image that includes a lot of general halftones, the movement of this light spot occurs everywhere in the screen, so fatigue occurs due to flickering without noticing it when looking at the screen. Is concerned.

Therefore, the present invention solves the above-described problems, does not cause distortion of a reflected image due to variations in the reflection angle of each pixel, is excellent in gradation expression performance, and is less likely to cause flicker, and a reflection type image display device. It is an object of the present invention to provide an image processing system having a reflective image display device.

[0009]

In order to solve the above-mentioned problems, a reflection type image display device and an image processing system having the reflection type image display device configured as in the following (1) to (10) are provided. To do. (1) A visible light-transmissive flat plate, and a plurality of micro elastic bodies whose surface arranged in an array on the side opposite to the surface on which the illumination light of the visible light-transmissive flat plate is incident have visible light reflectivity. A minute distance driving device which is disposed on the rear side of the micro elastic body and individually presses each of the micro elastic bodies according to the signal amount to bring them into close contact with the visible light transmitting flat plate. Type image display device. (2) A flat plate having a surface on which the illuminating light is incident is coated with an antireflection coating for a visible light flux, and a surface opposite to the surface is provided with a reflective film formed by laminating dielectrics, A plurality of minute elastic bodies whose surfaces are arrayed on the surface side provided with the reflection film and have visible light reflectivity, and the minute elastic bodies arranged on the rear side of these minute elastic bodies according to the signal amount. And a minute distance driving device that individually presses each of them to bring them into close contact with the visible light-transmissive flat plate. (3) The minute elastic bodies are arranged in a two-dimensional array at a ratio of one corresponding to one pixel, and the minute distance driving devices are arranged in a two-dimensional array corresponding to each one of the minute elastic bodies. The reflective image display device according to (1) or (2) above. (4) The reflective image display device according to any one of (1) to (3), wherein the micro elastic body is a sphere having a diameter of 1000 μm or less. (5) The sphere is positioned and arranged by a partition wall which divides the sphere formed on the visible light transmitting flat plate into pixels and arranges the sphere.
The reflective image display device according to item 1. (6) The partition wall formed on the visible light transmitting flat plate is formed by subjecting a visible light transmitting flat plate made of glass to glass etching, glass grinding, or the like. Reflective image display device. (7) The reflective image display device according to (5), wherein the partition wall formed on the visible light transmitting flat plate is formed by resin molding together with the resin visible light transmitting flat plate. (8) The reflection type image display device according to (4), wherein the spheres are connected at a portion in contact with adjacent spheres. (9) The microelastic body is a hemispherical protrusion having a radius of 500 μm or less, and the hemispherical protrusion is arranged on one thin plate. (1) to () The reflective image display device according to any one of 3). (10) Image processing comprising: the reflective image display device according to any one of (1) to (9), and an image information supply device that supplies image information to the reflective image display device. system.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION By applying the above configuration,
It is possible to realize gradation display by expressing the gradation by keeping the position of the pixel stationary on the screen without changing the pixel and continuously controlling the reflective surface area of each pixel. Specifically, it is an array of spherical or hemispherical mirrors having elastically deformable microscopic surface reflection characteristics, placed on the back side of flat glass, illuminating the glass, and reflecting light from the back side. Is projected as an image for image display. However, at this time, the condition is set so that total reflection does not occur from the back surface. The spherical or hemispherical mirror which is the surface reflection mirror is pressure-bonded to the flat glass from the rear side, and the illumination light flux is reflected from the flattened portion by the pressure-bonding, and the area of the portion depends on the pressing force on the spherical mirror. Change in proportion and continuously. As a result, continuous area gradation expression is possible.

As a result, the reflecting surface is basically determined by the first glass surface for all pixels, and mechanical variation in the angle of the reflecting surface does not occur in principle. Therefore, reflection due to variation in the reflecting angle of each pixel is caused. Image distortion can be made less likely to occur. In addition, since the area of the reflecting surface can be controlled steplessly, the gradation expression performance is excellent. Further, unlike the DLP described above, bright pixels are not traversed on the screen at high speed during gradation expression, thus preventing flicker. It becomes possible.

[0012]

EXAMPLES Examples of the present invention will be described below. [Embodiment 1] FIG. 1 shows a two-dimensional image forming device according to Embodiment 1 of the present invention, which is a reflective flat panel device. FIG. 1A is a schematic view showing the cross-sectional structure of a certain number of pixel rows of this device. Figure 1 (a)
In the lower part, the configuration of the first embodiment is schematically represented on the illumination / reflection side (when the pixel is viewed from the front) corresponding to each state in the upper part. As shown in FIG. 5, the present device irradiates a light flux that is substantially parallel, substantially diffused, or substantially converged from the front oblique direction, and projects the reflected image on a screen using a projection lens for use.

As shown in the figure, on the back side of the first glass, partitions partitioned by walls for each pixel are arranged in a two-dimensional array, and each partition has one surface corresponding to one surface. An elastically deformable sphere, which has been subjected to a surface treatment having a high reflectance in visible light or at least a surface of which has a high reflectance, is positioned and arranged by a partition wall. A piezoelectric element, a driving element utilizing electrostatic attraction (or such a minute driving source) are placed on the back side of each of the sections, and the elastic sphere can be pressed against the glass window. Have a configuration.

Usually, the elastic spheres are not pressed and are not in contact with the glass plate, or are in contact with a very small area. When an image signal is transmitted to the piezoelectric element and the elastic sphere is pressed, the force applied by the piezoelectric element continuously changes according to the brightness of the pixel of the image signal. The spherical reflector pressed against the glass plate, the pressed portion becomes a flat surface following the shape of the glass plate,
When viewed from the front side of the first glass, the elastic sphere appears as a minute circular flat mirror due to the high reflective surface characteristics of its surface. The area (diameter) of the minute mirrors changes in accordance with the pressing force applied to the glass plate, and the state corresponds to a two-dimensional array of minute circular mirrors whose diameters change continuously and individually. Of course, the condition that the change of the contact area is not linear with respect to the pressing is conceivable. Therefore, nonlinear pressing control suitable for displaying a desired still image or moving image is finally performed. It is necessary to devise such as.

In the present embodiment, the first glass is divided into compartments on the back surface side corresponding to each pixel, which is obtained by etching the glass plate itself,
Alternatively, there is no problem even if the partition wall structure made of resin is transfer-molded on a glass plate. This first glass is shown in Figure 1.
It is shown in FIG. The number of pixels, the size of the glass, the depth of the sections, etc. are schematic and different from the actual ones for easy understanding.

The elastic sphere is a substantially spherical body formed of a soft resin material such as synthetic rubber or synthetic resin,
For example, a coating having a high reflectance and some flexibility is provided on the surface. The coating may be a flexible metal thin film or the like as long as it has flexibility that does not cause film peeling in the deformation range of the elastic sphere.
The same applies even if the sphere itself is made of a material having a high visible light reflectance. Further, on the surface of the first glass that is in contact with the elastic spheres, the highly reflective surface coat of the elastic spheres may repeatedly come in and out of contact with the surface of the elastic spheres. It is effective to subject the surface to a surface treatment such as lipophilicity so that sticking or the like does not occur and the area of the fine circular mirror disappears from the glass surface promptly during depressurization. Further, as described above, the first glass plate may be made of resin or the like as long as it can satisfy the required characteristics even if it is not glass.

"Increasing pressing force = large mirror area"
However, since the shape of the partition wall forming the opening portion of each pixel is square or rectangular, the maximum area of the mirror is inscribed inside the partition wall or not depending on the elasticity and pressing force of the elastic sphere. A circle with a smaller diameter may be the largest. However, if it is desired to achieve a higher opening efficiency, it is conceivable that the elastic sphere is made of a very soft material so that the pressing force from the back surface can be sufficiently applied. In this case, due to the pressing deformation, the elastic sphere is considerably deformed following each partition wall including the first glass surface to be transformed into a substantially rectangular parallelepiped shape, and the space inside the partition wall and the corner of the space formed by the pressing surface are filled almost completely. When viewed from the illuminating side of the first glass, it becomes a pixel of the reflection surface having a shape close to a rectangle.

It is also conceivable to use mercury drops instead of elastic spheres. It behaves like an elastic spherical surface mirror by treating the first glass surface with mercury-repellent treatment, and when the pressing force is increased, it easily fills the compartments following the space. The advantage is that it looks like a perfect rectangular mirror array when viewed from above (higher aperture efficiency). The use of mercury is an environmental problem if the recovery and treatment processes are not established at the time of disposal of the equipment, but generally in the near future, various industrial products including the equipment will be used. However, it is fully possible that the manufacturer will be required to collect and process all of them at the time of disposal, and in such a case, it may be possible to use mercury.

[Embodiment 2] FIG. 2 shows a reflection type flat panel device which is a two-dimensional image forming device according to Embodiment 2 of the present invention. FIG. 2 is a schematic view showing the cross-sectional structure of a certain number of pixel rows of this device. The lower part of FIG. 2 schematically illustrates the configuration of the second embodiment on the illumination / reflection side (when the pixel is viewed from the front) corresponding to each state of the upper part. As shown in FIG. 5, the present device irradiates a light flux that is substantially parallel, substantially diffused, or substantially converged from the front oblique direction, and projects the reflected image on a screen using a projection lens for use.

As shown in the figure, on the back side of the first glass, the surface of each pixel is subjected to a surface treatment which has a high reflectance in visible light, or at least the surface has a high reflectance. The elastically deformable spheres of the material are directly arranged in a two-dimensional array, and one elastically deformable sphere is arranged for each pixel. The positioning of the elastic spheres is realized by the fact that the elastic spheres cannot move in the in-plane direction because they are in contact with the adjacent elastic spheres on the side surface. In addition, the positions are fixed not only when they are placed adjacent to each other, but also when the spheres are connected (by adhesion or the like) at the contact surfaces (points) with the adjacent front, rear, left and right elastic spheres. Therefore, it is preferable.

A piezoelectric element or a driving device similar thereto is placed on the back side of each elastic sphere, and the elastic sphere has an arrangement capable of being pressed against a glass plate. Normally, the elastic spheres are not pressed and are not in contact with the glass plate, or are only very lightly in contact with a very small area. An image signal is transmitted to the piezoelectric element,
When the elastic sphere is pressed, the force applied by the piezoelectric element continuously changes according to the brightness of the pixel of the image signal. The spherical reflector pressed against the glass plate becomes a flat surface following the shape of the glass plate at the pressed portion, and becomes a minute circular flat mirror due to the specularity of the surface.
The area (diameter) of the minute mirror changes in accordance with the pressing force applied to the glass plate, and the state becomes a state corresponding to a two-dimensional array of minute circular mirrors whose diameter continuously changes.

In contrast to the first embodiment, in the second embodiment, since the elastic sphere is arranged as it is without being divided by the partition by the wall,
In the first embodiment, the wall thickness of the partition that has become ineffective for the modulation of the reflected projection light flux disappears as it is, and the ratio of the area of the elastic sphere to one pixel can be increased. That is, since the size of the elastic sphere per pixel can be increased, the size of the plane mirror formed by the most pressed elastic sphere at the time of maximum pixel brightness can be increased only in the part without the partition. Therefore, the ratio of the variable area of the reflectance to the pixel pitch, that is, the aperture efficiency of each pixel can be improved, so that the brightness of the image as the display panel can be increased. This is expressed in the lower part of FIG. The expansion of the variable brightness range of each pixel becomes clear by comparing this with the lower part of FIG.

The elastic sphere is a substantially spherical body molded from a soft resin material such as synthetic rubber or synthetic resin, and has a coating having a high reflectance and a little flexibility on the surface. The coating may be a flexible metal thin film or the like as long as it has flexibility that does not cause film peeling in the deformation range of the elastic sphere. Also,
On the surface of the first glass that is in contact with the elastic spheres, the highly reflective surface coating of the elastic spheres repeatedly contacts and separates, so that adsorption or sticking of film components does not occur. It is preferable to apply a surface treatment such as lipophilicity to the surface. Further, the first glass plate is not limited to glass and may be resin or the like as long as the characteristics can be satisfied.

[Embodiment 3] FIG. 3 shows a two-dimensional image forming device of Embodiment 3 according to the present invention, which is a reflection type flat panel device. FIG. 3A schematically shows the cross-sectional structure of a certain pixel row of the device.
The lower part of FIG. 3A schematically shows the configuration of the first embodiment on the illumination / reflection side (when the pixel is viewed from the front) corresponding to each state of the upper part. This device is shown in Figure 5.
As shown in (1), a light flux that is substantially parallel, substantially diffused, or substantially convergent is emitted from the front oblique direction, and the reflected image is projected onto a screen by a projection lens for use.

As shown in the figure, a sheet of flexible synthetic rubber or synthetic resin is placed on the back side of the first glass. This is shown separately in FIG.
It is (b). FIG. 3B shows a schematic perspective view and a cross section of the sheet. A two-dimensional array of substantially hemispherical projections whose surface is elastically deformed, or whose surface has been subjected to a surface treatment with high reflectance in visible light, or at least the surface of which is a material with high reflectance. It is formed and processed into an embossed shape that is arranged and configured. One of the protrusions having a hemispherical convex shape corresponds to one pixel. On the back side of the array of hemispherical projections, piezoelectric elements (or similar driving force generators) for pressing the hemispheres one by one are arranged in a two-dimensional array. The elastic hemispherical projection has an arrangement configuration capable of being individually pressed against the glass window.

Usually, the elastic hemispherical protrusions are pressed, and are not in contact with the glass plate, or are in contact with a very small area. When an image signal is transmitted to the piezoelectric element and the elastic hemispherical protrusion is pressed, the force applied by the piezoelectric element continuously changes according to the brightness of the pixel of the image signal. The spherical reflector pressed against the glass plate has a pressed part which becomes a flat surface following the shape of the glass plate, and when viewed from the front side of the first glass, the elastic sphere is a minute circular shape due to the specularity of its surface. It looks like a flat mirror. The area (diameter) of the minute mirrors changes in accordance with the pressing force applied to the glass plate, and the state corresponds to a two-dimensional array of minute circular mirrors whose diameters change continuously and individually.

In the present embodiment, the first glass is divided into sections on the back side thereof in consideration of each pixel as shown in the first embodiment, which is used for etching the glass plate itself. There is no problem even if it is processed by concavo-convex processing and a resin partition wall structure is transferred and molded on a glass plate. Further, as in the present embodiment or similar to that shown in the second embodiment, a completely flat plate is also possible.

The elastic sphere is a substantially sphere formed of a soft resin material, and the surface thereof is coated with a high reflectance and a little flexibility. The coating may be a flexible metal thin film or the like as long as it has flexibility that does not cause film peeling in the deformation range of the elastic sphere. In addition, since the highly reflective surface coating of the elastic sphere repeatedly contacts and leaves the surface of the first glass that contacts the elastic hemispherical protrusion, adsorption or sticking of film components, etc. It is effective to subject the surface to a surface treatment such as lipophilicity so that the above phenomenon does not occur and the area of the fine circular mirror disappears from the glass surface promptly during depressurization. Further, the first glass plate is not limited to glass and may be made of resin or the like as long as the required characteristics can be satisfied.

In the present embodiment, as in the case of the second embodiment, even if the size of the circular mirror portion on the first glass surface is close to the maximum, the hemispherical projections are originally positioned on the same sheet at a predetermined interval. Since it is formed by molding, it is surely done.
Therefore, unlike the case of the first embodiment, the partition wall for positioning the elastic sphere is unnecessary. Therefore, as in the second embodiment, the ratio of the effective openings to the pixel pitch, that is, the opening efficiency can be increased.

[Embodiment 4] FIG. 4 shows a two-dimensional image forming device of Embodiment 4 according to the present invention, which is a reflection type flat panel device. FIG. 4A is a schematic view showing the cross-sectional structure of a certain number of pixel rows of this device.
The lower part of FIG. 4A schematically shows the configuration of the fourth embodiment on the illumination / reflection side (when the pixel is viewed from the front) corresponding to each state of the upper part.

In each of the first to third embodiments, the surface of the elastic sphere or hemisphere array or the like has the elasticity and the high reflection property of the reflectance, so that the surface serves as a mirror. Was being played.
In contrast to this, Example 4 has a high reflectance in the visible region in the non-contact state on the back surface side of the first glass (the surface on which the elastic spheres or the like come into contact), for example, with a laminated dielectric film or the like. Attach the film to be presented.

Furthermore, in this laminated dielectric film, when the surface material such as an elastic sphere comes into contact with the laminated dielectric film, the conditions of the laminated dielectric film are changed and only the reflectance of the contact surface is suddenly lowered. This situation is explained in FIG. 4 (b) and FIG.
It is (c). What is presented in FIG. 4 (c) is a schematic illustration of the back-side end of the first glass, where the sphere is not in contact (state A) and the sphere is in contact ( This is the state B), and in this case, the laminated dielectric multilayer film (total number of N layers) is attached to the glass side.

The arrow from the top is a light beam propagating in the first glass substrate, and in the case of state A of FIG. 4C, it is difficult to illustrate it in detail, so it is omitted a little, but it is a laminated film. Most of the light flux is reflected inside the first glass by the function of. Further, the state B of FIG. 4C shows the case where the sphere comes into contact with the dielectric film, and at this time, the reflectance of the laminated film changes due to the addition of the sphere material to the final layer. ,
Greatly reduced. Therefore, the luminous flux reflected at A is B
Then, it propagates inside the sphere and is absorbed.

FIG. 4B shows a spectral reflectance graph in the above A and B states. In the state A, a high reflectance that is almost flat is maintained in the visible light range of 400 nm to 700 nm, and in the state B in which the spherical material is added,
As shown in the same graph, the reflectance in the visible region drops sharply. In this example, the film is attached to the first glass side, and the structure in which the surface of the elastic sphere is the same as that of the material is disclosed, but the laminated film may be partly or mostly attached to the surface of the sphere. It does not matter if the state of FIG. 4B can be realized. Then, it is sufficient that a high reflectance is maintained in the visible range with respect to the luminous flux emitted from the substrate side in a state where nothing is in contact with the first glass.

[0035]

According to the present invention, the reflection image is not distorted due to the variation of the reflection angle for each pixel, the gradation expression performance is excellent, and the flicker does not easily occur, and the reflection image display. An image processing system having a device can be realized.

[Brief description of drawings]

FIG. 1 shows a configuration of a two-dimensional image forming device according to a first embodiment of the present invention, (a) is a schematic view of a cross-sectional structure of a certain pixel row of the present device, and (b) is a first diagram. It is a schematic diagram for supplementally explaining the partial structure by the side of glass.

FIG. 2 is a schematic diagram of a cross-sectional structure of a certain number of pixel rows of a two-dimensional image forming device according to a second embodiment of the present invention.

3A and 3B show a configuration of a two-dimensional image forming device according to a third embodiment of the present invention, in which FIG. 3A is a schematic diagram of a cross-sectional structure of a certain pixel row of the present device, and FIG. It is a schematic diagram for supplementarily explaining the partial structure of the back side of glass.

4A and 4B are diagrams showing a configuration of a two-dimensional image forming device in Embodiment 1 of the present invention, in which FIG. 4A is a schematic view of a cross-sectional structure of a certain pixel row of the device, and FIG. A spectral reflectance graph in a state A in which it is not in contact with a state B in which it is in contact, (c) is a schematic diagram showing a configuration of an end portion on the back surface side of the first glass.

FIG. 5 is a diagram for explaining a usage example of the two-dimensional image forming device in each embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a conventional DLP.

Claims (10)

[Claims] 1. A visible light-transmissive flat plate, and a plurality of minute elastic bodies whose surface arranged in an array on the side opposite to the surface on which the illumination light enters the visible light-transmissive flat plate have visible light reflectivity. A minute distance driving device which is disposed on the rear side of these minute elastic bodies and individually presses each of the minute elastic bodies according to a signal amount to bring them into close contact with the visible light transmitting flat plate. Reflective image display device. 2. A flat plate having a surface on which illumination light is incident, which is provided with an antireflection coating for a visible light beam, and a surface opposite to the surface, which is provided with a reflection film formed by laminating dielectrics. , A plurality of minute elastic bodies whose surfaces are arrayed on the surface side provided with the reflection film and have visible light reflectivity, and the minute elastic bodies arranged on the rear side of these minute elastic bodies according to the signal amount. A reflection type image display device, comprising: a minute distance driving device that individually presses each elastic body to bring it into close contact with the visible light transmitting flat plate. 3. The micro elastic body is arranged in a two-dimensional array at a rate of one corresponding to one pixel, and the micro distance driving device is arranged in a two-dimensional array corresponding to each of the micro elastic bodies. It is arranged, It is characterized by the above-mentioned.
Alternatively, the reflective image display device according to claim 2. 4. The reflection type image display device according to claim 1, wherein the micro elastic body is a sphere having a diameter of 1000 μm or less. 5. The sphere is positioned and arranged by a partition wall which divides and arranges the sphere formed on the visible light transmitting flat plate into pixels. Reflective image display device. 6. The partition wall formed on the visible light transmitting flat plate is formed by subjecting the glass visible light transmitting flat plate to glass etching or glass grinding. Reflective image display device. 7. The reflective image display device according to claim 5, wherein the partition wall formed on the visible light transmitting flat plate is formed by resin molding together with the visible light transmitting flat plate made of resin. 8. The spheres are connected to each other at a portion in contact with adjacent spheres.
The reflective image display device according to item 1. 9. The microelastic body is a hemispherical projection having a radius of 500 μm or less, and the hemispherical projection is arranged on one thin plate. The reflective image display device according to any one of 3 above. 10. An image processing system comprising: the reflective image display device according to claim 1; and an image information supply device that supplies image information to the reflective image display device. .