JP2002278515A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device capable of editing images, without performing troublesome works. SOLUTION: The image display device is provided with a flexible image display means 1, having a displayable area, storage means 3 and 5 for storing image data to be displayed in the displayable area of the image display means, a detection means 2 for detecting the deflection of the image display means 1 and a control means 6 for limiting the displayable area of the image display means 1 to a prescribed display area and reducing and displaying the image data in the limited display area, when the detection means 2 detects the deflection of the image display means 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device used for an electronic book or an electronic organizer.

[0002]

2. Description of the Related Art In a conventional image display apparatus, when editing an image, such as turning the page forward or backward, enlarging / reducing the image, changing the layout, or the like, an instruction to edit the image is given by a button operation or an instruction is given with a dedicated pen. A method has been proposed.

However, such a method using the operation buttons and the dedicated pen has a problem that the operation is complicated.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to apply an image display device capable of editing an image without performing complicated work.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention detects a bending of an image display device and edits an image according to the bending.

That is, a first invention is a flexible image display means having a displayable area, a storage means for storing image data to be displayed in the displayable area of the image display means,
Detecting means for detecting the deflection of the image display means, and when the detection means detects the deflection of the image display means, the displayable area of the image display means is limited to a predetermined display area, and the restricted display is performed. Control means for reducing and displaying image data in the area. Here, the displayable area can be limited to at least one area of the fold forming the bending.

According to a second aspect of the present invention, there is provided a flexible image display means having a displayable area, a storage means for storing image data to be displayed in the displayable area of the image display means, and a method for controlling the bending of the image display means. Detecting means for detecting, and when the detecting means detects the bending of the image display means, while limiting the displayable area of the image display means to a predetermined display area,
Control means for changing the layout of the image data and displaying the image data in the restricted display area. Here, the entire image data of the back surface turned back to the front side due to the bending of the image display means can be rotated and displayed by 180 °. Also, the image data of the folded portion on the back surface that is folded back to the front side by the bending of the image display means is 1
The image can be rotated by 80 ° and displayed.

According to a third aspect of the present invention, there is provided a flexible image display means having a displayable area, a storage means for storing image data to be displayed in the displayable area of the image display means, and a method for controlling the bending of the image display means. A detecting means for detecting, and a control means for, when the detecting means detects the bending of the image display means, displaying the image data by turning the page back or forward according to the bending. Here, when it is detected that the front side of the image display means has a peak, the image data can be displayed by turning the page. Also, conversely,
The image data can be returned to the page when the bending of the image display means to the valley on the front side is detected. Alternatively, the image data can be page-turned and displayed when the bending of the right front side of the image display means is detected as a mountain. Conversely, when the left front side of the image display means detects a bend that makes a mountain, image data can be returned to the page and displayed. Further, when the bending of the display means is large, it is preferable to advance the page feed or the page return of the image data.

As the detecting means, an optical fiber provided in the image display means and having a notch, a light source for introducing light to one end of the optical fiber, and a light amount of light derived from the other end of the optical fiber And an optical sensor that measures Further, a flexible conductive member provided on the surface of the image display means, a power supply connected to both ends of the conductive member via a resistor, and a voltage sensor for detecting a voltage across the resistor are provided. It can also be configured. Further, it may be constituted by a plurality of optical sensors arranged on the surface of the image display unit.

[0010]

According to the above invention, when the user having the image display device bends the image display device, the image data is reduced and displayed in a limited area according to the bending, the layout is changed, or the page is turned or Since the page is returned, there is no need to perform a complicated operation using a button or a dedicated pen.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

<First Embodiment> FIG. 1 is a block diagram showing an image display apparatus according to a first embodiment of the present invention. The image display device includes an image display unit 1 for displaying an image, a deflection detection unit 2 for detecting deflection of the image display device itself, an input page memory unit 3 for managing input image data in two-dimensional coordinates, An editing processing unit 4 for editing an image, an output page memory unit 5 for managing and outputting image data to be output in two-dimensional coordinates, and an overall control unit 6 for controlling the above-described units.

As shown in FIG. 2, the image display section 1 encloses a dispersion liquid in which charged pigment particles 8 are dispersed in a dispersion medium 7 dyed in a predetermined color in a microcapsule 9. The capsule 9 is placed between the first surface of the opposing substrate 11 on which the opposing electrode 10 is disposed and the first transparent substrate 13 on which the transparent electrode 12 is disposed, and between the opposing substrate 11 on which the opposing electrode 14 is disposed. The two-dimensional array is arranged in a two-dimensional array in the row direction and the column direction between the second surface and the second transparent substrate 16 on which the transparent electrode 15 is provided. The opposing substrate 11, the first transparent substrate 13, and the second transparent substrate 16 have flexibility and can be bent. Opposing electrodes 10 and 14, transparent electrode 1
Reference numerals 2 and 15 denote divided electrodes arranged corresponding to the individual microcapsules 9. A switch element is provided for each electrode, a selection signal is applied to each row from a matrix drive circuit (not shown), and a control signal and an output from a drive transistor (not shown) are applied to each column, so that a desired microcapsule 9 On the other hand, a desired electric field can be applied independently.

Assuming that the pigment particles 8 are negatively charged, the transparent electrode side 12 is positive and
When a negative voltage is applied to the counter electrode 10, the pigment particles 8 migrate toward the transparent electrode 12, and when a negative voltage is applied, the pigment particles 8 migrate toward the counter electrode 10. As a result, when viewed from the transparent electrode 12 side, the microcapsules 9 in which the color of the pigment particles 8 is visible
The whole image is displayed by the microcapsules 9 in which the color of the dispersion medium 7 can be seen. The back side of the second transparent substrate 16 is similarly displayed.

As shown in FIG. 3, the bending detecting section 2 includes three optical fibers 17 of different lengths folded in a U-shape.
A, 17B, 17C, and each optical fiber 17A, 17B,
A light-emitting source 18A such as an LED for introducing light to one end of
18B, 18C and each of the optical fibers 17A, 17B, 17
Optical sensor 19A, 1 for detecting the amount of light from the other end of C
9B and 19C. Optical fiber 17A, 1
7B and 17C are arranged in parallel on one end side (the left side in the present embodiment) of the image display unit 1. Here, the optical fiber 17A has a length from the lower end of the image display unit 1 to the third fold a, and a minute cut 20A is formed at a position corresponding to the fold a. The optical fiber 17B has a length from the lower end of the image display unit 1 to the second fold b, and a minute cut 20B is formed at a position corresponding to the fold b. The optical fiber 17C has a length from the lower end of the image display unit 1 to the first fold c, and a minute cut 20C is formed at a position corresponding to the fold c.

When the image display unit 1 is substantially flat, FIG.
As shown in (a), light introduced into each of the optical fibers 17A, 17B, and 17C from the light emitting sources 18A, 18B, and 18C travels through each of the optical fibers 17A, 17B, and 17C, and travels through the optical sensors 19A, 19B, and 19C. And the light emission source 18A,
Approximately 100% of the light amounts of 18B and 18C are detected. However, when the image display section 1 is bent (bent) at any of the folds 20, the optical fibers 17A, 1
7B and 17C are also bent, and as shown in FIG. 4B, cuts 20 at positions corresponding to the folds a, b, and c, respectively.
Since A, 20B and 20C are opened, each optical fiber 17A,
Light introduced from the light emitting sources 18A, 18B, 18C leaks into the light sensors 17B, 17C, and the light sensors 19A, 19B, 19C.
Reduces the amount of light detected. Thus, the optical sensor 1
Based on the light amounts detected by 9A, 19B, and 19C, it is detected at which position on the image display unit 1 and how much bending has occurred.

That is, as shown in FIG. 5A, when the image display unit 1 is not bent, each optical fiber 17A,
Since no light leaks from 17B and 17C, each optical sensor 1
The light amounts of 9A, 19B and 19C are large. As shown in FIG. 5B, when the image display unit 1 is bent at the fold c, light leaks from the cut 20C of the optical fiber 17C, and thus the light detection amount of the optical sensor 19C is reduced by the other two optical fibers. It becomes smaller than 17B and 17C. FIG. 5 (c)
When the image display unit 1 is bent at the fold line b, light leaks from the cut 20B of the optical fiber 17B, so that the light detection amount of the optical sensor 19B is smaller than that of the other two optical fibers 17A and 17C. Become smaller. In this manner, by determining whether or not the amount of light detected by each of the optical sensors 19A, 19B, and 19C is smaller than a predetermined threshold, the image display unit 1 is bent at any of the folds a, b, and c. Can be detected.

Table 1 shows the results of the detection by the deflection detecting section 2 and the contents of the editing process corresponding to the deflection. Here, the bent state of each of the folds a, b, and c is indicated by を for the folded state, and × for the unfolded state. Area 1,
Reference numerals 2, 3, and 4 denote display areas in which the image display area 21 is limited by the folds a, b, and c, as shown in FIG.

[0019]

[Table 1]

FIG. 7 shows an example of a folding position and an image displayed at that time. FIG. 7A shows a state in which there is no bending, and image data is displayed without being reduced or scaled. FIG. 7B shows a state in which a quarter from the bottom is bent at the fold c, and the areas 1, 2, and 3 restricted above the fold c are displayed by reducing the image data by 75%. In the area 4 restricted below the fold c, the image data is reduced and displayed by 25%. FIG. 7 (c) shows a state in which a quarter from the top is bent at the fold a and a quarter is bent from the bottom at the fold c, and is restricted above the fold a and below the fold c. Areas 1 and 4 in which image data is reduced by 25% are displayed, and crease a and c
Areas 2 and 3, which are limited to the center, are displayed with the image data reduced by 50%. FIG. 7D shows a state in which one-fourth of the fold a is folded from the top, one half of the fold b is folded from the top, and one-quarter of the fold c is folded from the bottom. In each of the restricted areas 1, 2, 3, and 4, image data is reduced and displayed by 25%.

The operation of the image display apparatus having the above configuration will be described. Image data transferred from the outside is stored in the input page memory unit 3. In the input page memory unit 3, the image data is managed in two-dimensional coordinates,
After the editing, the image data is managed in the output page memory unit 5 in two-dimensional coordinates and displayed on the image display unit 1. On the other hand, when the bending state of the image display unit 1 is detected by each of the optical sensors 19A, 19B, and 19C of the bending detection unit 2, the bending information is transferred to the overall control unit 6. The overall control unit 6 transfers the bending information to the editing processing unit 4, performs image editing according to the bending information, transfers the edited image data to the output page memory unit 5, and further transmits the edited image data to the image display unit 1. Output. As a result, the image that has been edited according to the bending state is displayed on the image display unit 1.

That is, the image display area is limited in accordance with the bending position of the image display unit 1, and the image data is reduced and displayed in each of the limited areas, so that the user can view the entire screen in any of the bent areas. be able to. Thus, the image can be easily reduced by simply bending the image display device 1. Therefore, even if the image display unit 1 is bent in a crowded train, the entire display can be viewed.

In the above embodiment, the horizontal image display unit 1
Instead of detecting the bending in the vertical direction, or detecting the bending in both the horizontal and vertical directions, the image may be reduced and displayed according to the bending state. Good.

<Second Embodiment> In the first embodiment,
This is an example in which an image is reduced and displayed in an area restricted by bending. In the second embodiment, a layout of the area restricted by bending is displayed.
The block diagram of the image display device according to the second embodiment and its deflection detection unit are substantially the same as those of the first embodiment, and a description thereof will be omitted.

FIG. 8 shows an example of the layout change process. FIG. 8A shows a state without bending, which is displayed without changing the layout of the image data. FIG.
(B) shows a case where the display area is bent at a quarter position from the right, and the displayable area is limited to the wider one of the areas on both sides of the fold so that the character information is not interrupted at the fold. Wrap to the next line and display it in the viewable area,
Accordingly, the character information is moved downward, but is not reduced.

FIG. 9 shows another example of the layout changing process. In this example, the image display unit 1 displays images on both the front and back sides. In addition, the deflection detecting sections 2 are also provided on both sides, and detect at which position and which side is bent into a valley or a mountain. That is, when the surface is bent so as to be convex, the cuts 20 of the optical fibers 17A, 17B, and 17C on the surface are formed.
A, 20B, and 20C are opened, and the cuts of the optical fibers on the back side (not shown) are closed.
When the light amounts of B and 19C are small and the light amount of the back optical sensor is large, it is possible to detect that the table is bent to the hill, and in the opposite case, it is possible to detect that the table is bent to the valley.

In FIG. 9, as shown in the upper part, images are displayed in the image display areas on the front and back sides in accordance with image data, respectively, and as shown in the lower part, the table becomes a valley at a quarter fold from the bottom. If it is folded like
In the image display area on the surface that is bent into a valley as shown in the middle figure, it is displayed without changing the layout,
The back surface bent into a mountain rotates and displays image data by 180 °. As a result, as shown in the lower diagram,
The image of the back surface folded back to the front side can be simultaneously viewed from above.

FIG. 10 shows still another example of the layout changing process, which is a modification of FIG. In this example, as shown in the middle diagram, only the image data of the lower quarter area from the lower surface turned back to the front surface is rotated by 180 ° and displayed. As a result, as shown in the lower diagram, the image of the back surface folded back to the front surface side can be simultaneously viewed.

Note that the first embodiment and the second embodiment may be combined to simultaneously reduce the size of an image and change the layout. That is, in the lower part of FIG. 10, the front side image data is reduced and displayed in the front side area where the front side is visible, and the back side image data is rotated by 180 ° and reduced in the back side area folded back to the front side. By displaying the image data, the entire image data of the front surface and the back surface can be simultaneously viewed.

<Third Embodiment> FIG. 11 shows a third embodiment of the present invention.
1 shows an image display device according to an embodiment. This image detecting apparatus has substantially the same block configuration as that of the first embodiment except that the arrangement of the bending detecting unit 2 and the content of the editing process are page feed. Divert the block diagram.

The deflection detecting section 2 comprises an optical fiber 17 having a cut 20 formed therein, a light emitting source 18 and an optical sensor 19 in the same manner as in the first embodiment. It is arranged in the horizontal direction. FIG.
As shown in (a), when the image display unit 1 is not bent, the cut 20 of the optical fiber 17 is closed.
The amount of light detected by the optical sensor 19 is large. As shown in FIG. 12B, when the image display unit 1 has a weak bend, the notch 20 of the optical fiber 17 is slightly opened and light leaks slightly. Since it becomes smaller, the presence of page feed (slow feed speed) is detected. As shown in FIG. 12C, when the image display unit 1 has a strong bend, the notch 20 of the optical fiber 17 is greatly opened and a large amount of light leaks. Since it becomes smaller, the presence of page feed (high feed speed) is detected.

The operation of the image display apparatus having the above configuration will be described. Image data transferred from the outside is stored in the input page memory unit 3. In the input page memory unit 3, the image data is managed in two-dimensional coordinates, and the edit processing unit 4
After the editing, the image data is managed in the output page memory unit 5 in two-dimensional coordinates and displayed on the image display unit 1. On the other hand, when the bent state of the image display section 1 is detected by the optical sensor 19 of the bending section 2, the bending information is transferred to the overall control section 6. The overall control unit 6 transfers the bending information to the editing processing unit 4, performs page feed at a feed speed according to the bending information, transfers the image data of the next page to the output page memory unit 5, and further outputs the image data. Output to the display unit 1.
As a result, the image that has been page-turned according to the folded state is displayed on the image display unit 1.

Specifically, as shown in FIG.
When the image display unit 1 hardly bends, that is, when the light amount of the optical sensor 19 is equal to or more than the threshold value 1, the image data stored in the output page memory unit 5 is not changed. Figure 1
As shown in FIG. 2B, when the image display unit 1 is bent to some extent, that is, when the detected light amount of the optical sensor 19 is equal to or more than the threshold 2 and equal to or less than the threshold 1 (threshold 2 <threshold 1), the output page memory unit 5 Image data to be stored is sequentially sent at a predetermined speed V1 in page units. As shown in FIG. 12C, when the image display unit 1 is more flexibly bent, that is, when the detected light amount of the optical sensor 19 is equal to or less than the threshold value 2, the image data stored in the output page memory unit 5 is converted into page units. They are sequentially sent at a predetermined speed V2 (V1 <V2).
Thus, the user can turn the page only by bending the image display unit 1 in an operation of turning a page when actually reading a book.

In the above-described embodiment, only the page feed is performed. However, in addition to the deflection detecting unit 2 on the front surface of the image display unit 1, the image display unit 1 is also bent on the back surface into a valley. May be provided, and if the image display unit 1 is bent to a mountain, the page may be fed, and if the image display unit 1 is bent to a valley, the page may be returned. Alternatively, a deflection detection unit is provided in the left half of the image display unit 1 in the same manner as the deflection detection unit 2 in the right half, and if the right side of the image display unit 1 is bent into a mountain, the page is turned. If the left side is bent into a mountain, the page is turned. You may make it return.

Further, in the above embodiment, the optical fibers 17A, 17B, 17C, 17 having the cuts 20A, 20B, 20C, 20 as the deflection detecting means 1, the light emitting source 1
8A, 18B, 18C, 18 and optical sensors 19A, 1
9B, 19C, and 19, but the invention is not limited to this, and a device that electrically detects deflection may be used. Hereinafter, examples of other deflection detecting means will be described.

The flexure detecting means shown in FIG. 13 includes a flexible conductive member 22 disposed at an end of the image display unit 1 in a direction perpendicular to the fold (horizontal direction), and both ends of the flexible conductive member 22. And a voltage sensor 25 for detecting a voltage between both ends of the resistor 23. The flexible conductive member 22 is embedded in the surface of the image display unit 1 such that one surface is exposed, as shown in FIG.
The flexible conductive member 22 functions as a variable resistor. That is, as shown in FIG. 15, when the image display unit 1 is bent, arbitrary points (for example, points A and B in FIG. 13) of the flexible conductive member 22 come into contact with each other, The resistance value changes, and the potential difference between both ends of the resistor fluctuates. By associating the bending position with the voltage in advance,
The deflection and the position of the image display unit 1 can be detected by the voltage detected by the voltage sensor 25. As shown in FIG. 16, by embedding the flexible conductive member 22 on both the front surface and the back surface of the image display unit 1, it is possible to detect which surface of the image display unit 1 is bent into a peak or a valley. can do.

The deflection detecting means shown in FIG. 17 comprises a plurality of optical sensors 26A, 26B, 26C, 26D arranged at regular intervals at the end of the image display section 1 in a direction perpendicular to the fold line. These optical sensors 26A, 26B, 26C, 2
6D are buried on the surface of the image display unit 1 such that their detection surfaces are exposed as shown in FIG. When the image display unit 1 is bent, the amount of light detected by the optical sensors 26A, 26B, 26C, and 26D covered by the bent portions decreases. That is, as shown in FIG. 19A, when there is no bending, each sensor 26A, 26B,
Although the detected light amounts of 26C and 26D are large, FIG.
When only the optical sensor 26D is covered by the bent portion as shown in FIG.
6A, 26B and 26C have a large detected light amount, while the optical sensor 26D has a small detected light amount. Further, as shown in FIG. 19C, the amount of bending is large, and the optical sensors 26B and 26B
When C and 26D are covered by the bent part,
The optical sensor 26B has a large amount of detected light.
B, 26C and 26D have small detection light amounts. In this manner, the deflection and the position of the image display unit 1 can be detected. In addition, as shown in FIG.
By embedding 6B, 26C, and 26D on both the front surface and the back surface of the image display unit 1, it is possible to detect which surface of the image display unit 1 is bent into a mountain or a valley.

In the above embodiment, the electrophoretic display is used as the image display section. However, the present invention is not limited to this, and can be applied to a liquid crystal display.

[0039]

As is apparent from the above description, according to the present invention, the bending of the image display means caused by the user's operation is detected, and the image is automatically edited in accordance with the detection result. It is possible to perform image editing by a simple operation, thereby reducing the operational burden on the user.

[Brief description of the drawings]

FIG. 1 is a block diagram of an image display device according to a first embodiment of the present invention.

FIG. 2 is a schematic enlarged sectional view of an image display unit.

FIG. 3 is a plan view showing an arrangement of a deflection detection unit.

FIG. 4 is a front view showing the operation of the deflection detection unit.

FIG. 5 is a diagram illustrating a change in the amount of light detected by an optical sensor of a bending detection unit depending on a bending state of an image display unit.

FIG. 6 is a plan view showing an area of an image display unit.

FIG. 7 is a plan view showing an example of editing contents of the image display unit.

FIG. 8 is a plan view showing another example of editing contents of the image display unit.

FIG. 9 is a plan view showing still another example of editing contents of the image display unit.

FIG. 10 is a plan view showing still another example of editing contents of the image display unit.

FIG. 11 is a perspective view of an image display device according to a second embodiment of the present invention.

FIG. 12 is a diagram illustrating a change in the amount of light detected by an optical sensor of a bending detection unit depending on a bending state of an image display unit.

FIG. 13 is a perspective view showing another example of the deflection detecting means.

FIG. 14 is a sectional view taken along line II of FIG. 13;

FIG. 15 is a sectional view showing a contact state of the flexible conductive member in a state where the image display unit of FIG. 13 is bent.

FIG. 16 is a sectional view showing a modified example of the deflection detecting means of FIG.

FIG. 17 is a perspective view showing still another example of the deflection detecting means.

18 is a sectional view taken along line II-II of FIG.

19 is a cross-sectional view showing a state in which the image display unit of FIG. 17 is bent, and a diagram showing the light amount detected by the optical sensor in each state.

FIG. 20 is a cross-sectional view showing a modification of the deflection detecting means of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image display part 2 Deflection detection part 3 Input page memory part 4 Editing processing part 5 Output page memory part 6 Overall control part

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // G09G 5/00 530 G09G 5/00 530T 550 550C (72) Inventor Mitsuru Ohara Chuo-ku, Osaka-shi, Osaka 2-13-13 Azuchicho Osaka International Building Minolta Co., Ltd. (72) The inventor Tatsuya Isono 2-3-3 Azuchicho, Chuo-ku, Osaka-shi, Osaka Osaka International Building Minolta Co., Ltd. (72) Inventor Osamu Yamada F-term (reference) 2H038 AA02 BA01 5C080 AA13 BB05 DD01 EE26 FF08 JJ01 JJ02 JJ06 5C082 BA02 BA12 BA33 BB15 BB22 BD00 CA32 CA52 CA76 CA85CB01 DA53 DA63 MM09 MM10 5C094 AA01 AA48 AA52 AA56 BA09 BA12 BA66 BA75 BA76 CA19 CA24 DA01 DA06 DA08 DB02 EA04 EA05 FA01 GA10

Claims (18)

[Claims] 1. A flexible image display means having a displayable area, a storage means for storing image data to be displayed in a displayable area of the image display means, and a detection means for detecting a bending of the image display means And when the detecting means detects the bending of the image display means,
An image display apparatus comprising: a control unit that limits a displayable area of the image display unit to a predetermined display area, and reduces and displays image data in the limited display area. 2. The image display device according to claim 1, wherein the displayable area is limited to at least one area of a fold forming the bending. 3. The optical system according to claim 1, wherein the detecting means is provided in the image display means, and has an optical fiber having a cut, a light source for introducing light to one end of the optical fiber, and a light source for emitting light from the other end of the optical fiber. 2. The image display device according to claim 1, comprising an optical sensor for measuring a light amount. 4. The detecting means comprises: a flexible conductive member provided on a surface of the image display means; a power supply connected to both ends of the conductive member via a resistor; The image display device according to claim 1, further comprising a voltage sensor that detects a voltage. 5. The image display device according to claim 1, wherein said detection means comprises a plurality of optical sensors arranged in a row on a surface of said image display section. 6. A flexible image display means having a displayable area, a storage means for storing image data to be displayed in the displayable area of the image display means, and a detection means for detecting a bending of the image display means. And when the detecting means detects the bending of the image display means,
An image display apparatus comprising: a control unit that limits a displayable area of the image display unit to a predetermined display area, and displays image data in the restricted display area with its layout changed. 7. The image display device according to claim 6, wherein the entire image data of the back surface turned back to the front side by the bending of the image display means is rotated by 180 ° and displayed. 8. The image data of the folded portion on the back surface, which is folded back to the front side by bending of the image display means, is rotated by 180 °.
The image display device according to claim 6, wherein the image display is rotated. 9. The optical system according to claim 1, wherein the detecting unit is provided on the image display unit, the optical fiber having a cut, a light source for introducing light to one end of the optical fiber, and a light source for emitting light from the other end of the optical fiber. 7. The image display device according to claim 6, comprising an optical sensor for measuring a light amount. 10. The detecting means comprises: a flexible conductive member provided on a surface of the image display means; a power supply connected to both ends of the conductive member via a resistor; The image display device according to claim 6, comprising a voltage sensor for detecting a voltage. 11. The image display device according to claim 6, wherein said detection means comprises a plurality of optical sensors arranged in a row on a surface of said image display section. 12. A flexible image display means having a displayable area, a storage means for storing image data to be displayed in the displayable area of the image display means, and a detection means for detecting bending of the image display means. And when the detecting means detects the bending of the image display means,
An image display device comprising: control means for displaying the image data by turning the page back or forward in accordance with the bending. 13. The image display apparatus according to claim 12, wherein, when a bending of the front side of the image display means is detected, the image data is page-turned and displayed. 14. The image display apparatus according to claim 12, wherein the image data is turned back to the page when the bending of the image display means in which the front side becomes a valley is detected. 15. The image display device according to claim 12, wherein, when a bending on the right front side of the image display means is detected, the image data is page-turned and displayed. 16. The image display apparatus according to claim 12, wherein the image data is turned back to a page and displayed when a bending on the left front side of the image display means is detected. 17. The image display device according to claim 12, wherein when the bending of the display means is large, the page feed or the page return of the image data is hastened. 18. The optical system according to claim 18, wherein said detecting means is provided on said image display means and has an optical fiber having a cut, a light source for introducing light to one end of said optical fiber, and a light source for emitting light from the other end of said optical fiber. The image display device according to claim 12, comprising an optical sensor for measuring a light amount.