JP2003050390A - Display device and reflector - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a display device having a wide viewing area and easy to see. SOLUTION: In a rectangular display panel 10 having a reflector provided on the back surface of the display, a reflection surface 21 of the reflector 20 has an aspect ratio of about 0.5 to less than 0.5.
A concave shape having a quadrangular opening with an aspect ratio of twice as a basic pattern is used as a basic pattern, and a plurality of fine reflection patterns similar to the basic pattern are arranged. The angles of view of the reflected lights 72a to 72d from the corners 10K of the display panel 10 can be secured and can be emitted toward the center of the screen of the display panel 10, so that the viewing area 10L can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflector and a display device used for a liquid crystal panel or the like.

[0002]

2. Description of the Related Art As a reflection type display device, light transmitted through a liquid crystal layer, which is a display body, is reflected again in the direction of the liquid crystal layer by using a reflector located below the display body, for example, a reflection type electrode. A reflective or semi-transmissive / semi-reflective liquid crystal display device (liquid crystal panel) that displays a desired image is known. On the surface (reflection surface) of this reflective electrode, in order to efficiently reflect the light incident from the surroundings in the direction of displaying an image, a plurality of bowl-shaped or ball-shaped concave or convex fine spherical shapes Pattern is arranged. Furthermore, these concave or convex patterns are arranged so as to be substantially random so that the displayed image does not have stripes or moire.

[0003]

In a display device, a bright image can be obtained and a bright display range can be obtained.
It is desirable that the so-called viewing angle is wide. However,
Conventionally, the shape of the reflector has never been studied from such a viewpoint. That is, one of the necks of the liquid crystal display panel is that the viewing angle is narrow. However, the viewing angle is relatively narrow in the reflective type, in particular, in the liquid crystal panel in which unevenness is provided on the reflector so that it looks bright from the front. It has been pointed out by the inventor of the present application.

Therefore, an object of the present invention is to provide a reflector and a display device capable of increasing the effective area of light distribution in a desired direction, that is, the field-of-view area, and performing bright display as a whole.

[0005]

Therefore, in the present invention,
A display device having a wide viewing angle is realized by providing a reflection pattern similar to the basic pattern of the quadrangle to the quadrangle display.

First, a rectangular reflection type display device shown in FIG. 1, that is, a light 7 emitted from a display panel 10.
When considering 3, the corner portion 10K of the display panel 10
The light emitted from has the tightest angle of view, has a small amount of light, and is generally dark. Therefore, the display panel 1
At a position apart from 0 by a certain distance, the range in which the light output from all the corner portions 10K can be seen can be evaluated as the viewing angle.

A reflector having a spherical basic pattern (basic shape) arranged on a plane can efficiently reflect light incident from the surroundings in the direction in which an image is displayed, while the basic pattern has a circular opening, so that reflection is possible. The emission angle of light, that is, the cross section of the reflected light flux becomes circular. On the other hand, the display (display panel) arranged on the reflector is generally quadrangular. Therefore, as shown in FIG. 1, each luminous flux (reflected light) 73a, 73b, 73c and 73 emitted so as to be diffused in the rectangular display panel 10.
d has a circular cross section. Then, these light fluxes 73a to
Area 1 in which 73d is overlapped (superposed) in the display panel 10
0L (the portion surrounded by diagonal lines in this figure) is the area that can be evaluated as the viewing angle. Therefore, the region 10L is
A part (arc) of a circle centered on each corner 10K has a shape that constitutes four sides.

On the other hand, as shown in FIG. 2, a reflected light 7 of a light beam having a rectangular cross section and a side parallel to the display panel 10 is provided from each corner 10K of the rectangular display panel 10.
2a to 72d are emitted, these reflected lights 7
A region 10L in which 2a to 72d are overlapped and displayed brightly (effective visual field area) is a quadrangle with each side formed by a straight line as indicated by a diagonal line. Then, assuming that the solid angles of the light beams emitted from the respective corner portions 10K are the same, the diagonal lines of the light beams having a quadrangular cross section are longer than the diameters of the light beams having a circular cross section, so these are combined. The area of the region 10L is larger for a light flux having a rectangular cross section. Therefore, by adopting a reflector in which the cross section of the luminous flux of reflected light is quadrangular, that is, a pattern in which the reflected radiation angle is quadrangular, is adopted, It can be seen that it is possible to provide a display device that has a wider viewing angle than the adopted display device and is easy to see.

When the case where the reflected radiation angle is similar to that of the display panel is considered, the effect is further apparent. 2 shows a case where the cross-sectional shape of the reflected lights 72a to 72d is similar to that of the display panel 10, but in the case shown in FIG. 1, the area of the visual field region 10L is emitted from the four corner portions 10K. Limited by four light fluxes. In contrast,
In the case shown in FIG. 2, the area of the visual field region 10L is determined by the combination of two light fluxes emitted from any two corners 10K, and it is considered that the area of the visual field region 10L becomes the largest.

On the other hand, if the cross section of the reflected light is quadrangular, the viewing angle is not always wider than that in the case where the cross section is circular. Is considered to be few. Therefore, the inventor of the present application obtained a range in which a viewing angle equal to or larger than that of the reflected light having a circular cross section was obtained by using the aspect ratio of the cross section of the reflected light as a parameter. The range is about 0. of the aspect ratio of the display panel.
It is about 5 to 2 times.

As described above, when the inventor of the present application forms the basic pattern (reflection pattern) of the reflector, the emission angle of the reflected light, that is, the shape of the cross section of the reflected light beam, is the viewing angle of the display panel ( Focusing on the point that determines the bright area), the basic pattern for a rectangular display panel is not a spherical shape or a shape with a circular opening, but a rectangular shape close to the display panel, so that the viewing angle is wide. A display device capable of displaying a bright image is provided.

That is, according to the present invention, there is provided a reflector having a reflecting surface for reflecting incident light to the display body, which has a rectangular shape having an aspect ratio in the range of about 1/2 to 2 times the aspect ratio of the display body. Provides a reflector in which a concave or convex shape that reflects the light flux of the cross section is used as a basic pattern, and a plurality of fine reflection patterns that are almost similar to the basic pattern are randomly arranged with their reflecting surfaces aligned. And
By combining this reflector with a quadrangular transmissive display that determines the shape of the display panel, it is possible to provide a display device having a wide viewing angle and capable of displaying a bright image, that is, a display panel.

The pattern for reflecting a light beam having a quadrangular cross section is a pattern in which the opening of the reflecting shape is a quadrangle. Therefore, according to the present invention, a reflector having a reflecting surface that reflects incident light to the display body, which has a rectangular aspect ratio of approximately 0.5 to 2 times the aspect ratio (aspect ratio) of the display body. The basic pattern is a concave or convex shape that forms the opening of, and a plurality of fine reflection patterns that are substantially similar to the basic pattern provide a reflector that is randomly arranged on the reflection surface. Provided is a display device in which a substantially rectangular display body is combined. If the display body is a liquid crystal display body, at least a part of the electrodes of the liquid crystal display body can be used as the reflector.

A reflector having a concave or convex shape forming a square opening as a basic pattern can diffuse the reflected light in the shape of a quadrangular pyramid from the display body to the outside. As described based on FIG. 2, a display device having a wide viewing angle can be realized. In addition, the viewing angle can be maximized by adopting the basic pattern in which the aspect ratio of the opening formed by the basic pattern, that is, the reflected radiation angle that is the cross section of the reflected light beam is the same as the aspect ratio of the display body. Is as described above.

For example, if the aspect ratio of a rectangular display body (although the display device has the same outer shape) is 1.33, the emission angle aspect ratio is in the range of 0.63 to 2.82. By adopting the basic pattern, the same as when using the basic pattern in which the radiation angle is circular,
Alternatively, the field of view can be made wider than that. When the aspect ratio of the emission angle is 1.33, that is, the same as the aspect ratio of the display body, it is possible to obtain a visual field area of about a little more than 3 times at maximum, which is very effective. Even if the aspect ratio of the emission angle is in the range of 1, that is, even if the emission angle is a square, it is possible to obtain a field of view that is at least twice as large as that when the emission angle is circular.

It is desirable to arrange the reflection patterns at random and to arrange them at a high density in order to improve the reflection efficiency. For that purpose, it is desirable to arrange reflection patterns of the same size on the surface of the reflector so as to be spread so that there is almost no gap, and to preferentially arrange reflection patterns of different sizes at random on top of it. . As a result, while the reflection patterns are randomly arranged as a whole, the reflection patterns can be arranged at a high filling rate with almost no space between them, improving the light utilization efficiency, and causing no streaks or moire in the displayed image, which is bright, A high quality image can be displayed.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a mobile phone as an example of a terminal device equipped with a liquid crystal panel using the reflector of the present invention. Display panel 1 of mobile phone 1 of this example
Reference numeral 0 denotes a reflective liquid crystal display panel 10 in which a transmissive liquid crystal display body is adopted as a display body 12 on which data is displayed, and a reflector 20 is arranged on the back surface thereof. Alternatively, an image can be displayed using the illumination light 70 as a light source. Therefore, it is possible to omit the backlight of the liquid crystal panel or reduce the time required for the backlight as a semi-transmissive type. Therefore, it is suitable for a mobile terminal such as a mobile phone as a thin and power saving type display device.

That is, as shown in FIGS. 1 and 2, the display panel 10 of the present example is a horizontally long quadrilateral, and the aluminum reflector 20 is a substantially quadrilateral plate-shaped liquid crystal display (liquid crystal). It is placed on the back side of cell 12
External light 71 that has passed through the liquid crystal cell 12 is reflected by the reflector 20.
The emitted light 72 is reflected by the reflection surface 21 of No. 2 and is emitted again toward the liquid crystal cell 12. As a result, the display panel 10 of this example
Then, the user 90 can see the desired image displayed on the liquid crystal cell 12 by the external light. As a liquid crystal panel, one that is bright and has good color reproducibility and high display performance is always required, and in most cases, a backlight is provided to secure the amount of light. In the liquid crystal display panel 10 of this example, by appropriately controlling the reflection direction of the reflector 20, the utilization efficiency of light is improved, the display performance is high and the display is bright without using a backlight and with high brightness. We are able to provide liquid crystal panels.

In this example, the display panel 10 is described as a structure in which a liquid crystal layer (liquid crystal display) 12 which is a display body and a layer which also serves as an electrode which is the reflector 20 are laminated. It is of course provided with other layers constituting a known color liquid crystal panel such as a filter, and the description thereof will be omitted. However, a color liquid crystal panel having other layers constituting these color liquid crystal panels is also included in the present invention.

4 and 5 show the shape of the surface 21 of the reflector 20 of this example. The reflector 20 of this example is designed to have two layers. First, as the first layer 51, a concave shape that forms an opening similar to the rectangular display panel 10 (concave to the display body 21 side) is formed. The first reflective pattern 26 of
They are arranged in a matrix so that there are no gaps.
Furthermore, a concave second second layer 52 that forms a rectangular opening 23 similar to the display panel 10 is formed thereon as a second layer 52.
The reflection patterns 28 (shown by hatching in FIG. 4) are arranged so that the size and the position are random. Then, in the portion where the first layer 51 and the second layer 52 overlap, the reflection pattern 28 forming the second layer 52 is prioritized, and the reflection surface 21 is formed so that the shape thereof is fully revealed. As a result, on the reflecting surface 21, the first reflecting pattern 26 and the second reflecting pattern 28 having the shape of the rectangular display panel 10 as a basic pattern and having a side length of several μm to several tens of μm are similar. , The vertical and horizontal directions are not changed, and they are densely arranged without any gap.
Since the second reflection patterns 28 are randomly arranged, the reflection patterns 26 and 28 are randomly arranged as a whole. For this reason, in the display panel 10 of the present example, less light is not distributed in the direction of the user 90 due to the reflection patterns 26 and 28, the light utilization efficiency is improved, and moire and streaks appear in the image displayed on the display panel 10. Since it can be prevented from occurring, a bright and beautiful image can be displayed.

FIG. 6 shows the reflection patterns 26 and 28 (explained below as the reflection pattern 26) in an extracted manner. The reflection pattern 26 has a shape in which the reflection surface 21 curved to the opposite side from the reflection surface 21 has a concave shape, and the opening 23 appearing in the reflection surface 21 has a rectangular shape when viewed from the display body 21 side. Therefore, the light 71 incident obliquely from above is reflected by the reflecting surface 21 again to the display body 12 side (upper side in this figure) and is emitted to the outside through the display body 12. It can be said that the cross section of the light flux of the reflected light 72 is a quadrangle similar to the shape of the opening 23, and the emission angle φ is a quadrangle. Therefore, as described above with reference to FIG. 2, the viewing angle of the display panel 10, that is, the brightly displayed region 10L can be increased.

FIGS. 7 and 8 show the reflection radiation angles of different aspect ratios on the reflection surface 21 of the reflector 20 of the display panel 10 having the aspect ratio (aspect ratio) x / y = 4/3 (about 1.33). The effective visual field area (visual field area 10L shown in FIG. 2) in the case where the reflection pattern 26 in which the opening for outputting the reflected light (hereinafter, rectangular radiation) is formed in a quadrangle is obtained by simulation, and the change in the value is shown. At the same time, an effective viewing area in the case of forming a reflection pattern in which the diameter is determined so that the solid angle is the same as that of the reflection pattern 26 having a quadrangle and the emission angle is circular (hereinafter circular emission) is formed. (Viewing area shown in FIG. 1) is shown by simulation. The size of the display panel 10 is 60 mm in length and 8 in width.
The distance between the user's eyes 90 at the position of 0 mm and the field of view and the display panel 10 is 30 cm, the radiation solid angle φ of the reflected light 72 is 0.487 sr, and the vertical and horizontal ± of the reflected light of square radiation (aspect ratio 1). It is an angle corresponding to 20 deg.

As can be seen from these figures, the alternate long and short dash line 8
As shown in FIG. 1, when the reflection pattern 26 having rectangular radiation is adopted, the aspect ratio is between 0.63 and 2.82, that is, about 0.5 to 2 times the aspect ratio 1.33 of the display panel 10. In the range, the effective field area due to the rectangular radiation is larger than the effective field area due to the circular radiation shown by the solid line 82. Then, as expected based on FIG. 2, when the aspect ratio of the rectangular radiation, that is, the aspect ratio of the cross section of the radiant light flux is 1.33 which is equal to the aspect ratio of the display panel 10 (hereinafter, similar radiation), the effective field of view. The area is maximum, and the effective field of view due to circular radiation is approximately 3.05.
A double field of view can be obtained. Furthermore, even at a radiation angle, which is a special form of similar radiation, that is, at a square cross section of the light flux (aspect ratio 1.0), a large effective visual field area of about 2.75 times that of circular radiation can be obtained. .

FIG. 9 shows an effective visual field area (solid line 86) with similar radiation having an emission angle aspect ratio of 1.33 which is the same as that of the display panel 10, and a square emission angle having an emission angle aspect ratio of 1.0. Shows that the effective visual field area (solid line 87) due to the square radiation and the effective visual field area (solid line 88) due to the circular radiation change depending on the visual field distance. When the viewing distance is changed in the range of about 200 mm to 500 mm, the effective visual field area is increased accordingly. However, in the entire range, the effective visual field area due to the similar radiation is the largest, and the next is the visual field due to the square radiation. Area. It can be seen that the field of view due to any of the radiations greatly exceeds the field of view due to the circular radiation, and that the field of view due to the similar radiation is larger than the field of view due to the circular radiation regardless of the viewing distance. And as the viewing distance increases,
The difference between the field of view due to similar radiation and the field of view due to circular radiation becomes significant.

As described above, in the rectangular display panel 10, the difference between the effective visual field area due to the rectangular radiation and the effective visual field area due to the circular radiation is remarkable. This phenomenon is
As described with reference to FIGS. 1 and 2, when the general rectangular display panel 10 is directly viewed, the larger the angle of view, the smaller the margin with respect to the viewing angle, and particularly the angle of view of the corner portion 10K becomes a serious problem. It is in. Then, comparing the circular radiation and the rectangular radiation, the corner portion 10
The circular radiation 73a to 73d from K has a margin corresponding to the radius, while the rectangular radiation 72a to 72d aligned vertically and horizontally with the display panel 10 has a corner portion 10.
Since the margin of K is about half the diagonal, the margin is relatively large.

As a result, the range in which the entire screen, which is shaded in FIGS. 1 and 2, appears bright when the radiation is rectangular. Then, as shown by the result of the simulation, by adopting the rectangular radiation having the aspect ratio in the range of approximately 0.5 to 2 times the aspect ratio (aspect ratio) of the rectangular display panel 10, the rectangular radiation is more preferable than the circular radiation. A large viewing angle can be obtained. Further, by adopting the similar radiation having the same aspect ratio as that of the display panel 10, the viewing area can be increased up to about 3 times. That is, by adopting similar radiation, the angle of view of reflected light (radiation angle φ) can be secured, and the area of the reflected light 72 to be distributed can be expanded from each corner portion 10K toward the display panel 10.

10 and 11 show the direction of the light emitted from the reflection pattern according to the angle of view, that is, the reflection direction is obliquely inclined so that the entire screen of the display panel 10 looks bright, and the center direction of the screen is shown. In this example, the reflected light 72 is collected to improve the angle of view margin. In the display device in which the reflection direction is adjusted by the reflection pattern in this manner, there is no difference in the range (effective viewing area) where the entire screen looks bright on the ideal diffusion surface 55. However, as the viewpoint moves away from the ideal diffusing surface 55, a difference in margin appears due to the cross-sectional shape of the radiant light flux from each corner portion 10K, and similar to the above, rectangular radiation, in particular, similar radiation is effective in the visual field. The area can be increased. Therefore, also in this display device, the reflection pattern 26
By making the light beam emitted from the device into rectangular radiation, and more preferably similar radiation, the viewing angle can be widened, and an image that is bright and easy to see can be displayed as a whole.

In order to obtain rectangular radiation, in this example,
Although the opening 23 has a rectangular shape, that is, the opening 23 has a quadrangular shape and a concave reflection pattern 26 is formed on the reflecting surface 21, if a plurality of reflection patterns result in a quadrangular opening, a convex reflection pattern is formed. Even with a pattern, it is possible to obtain reflected light having a rectangular emission angle.

In the above description, the display panel (display device) 10 used in the mobile phone 1 is described as an example. However, the display panel is not limited to this and is a reflective or semi-transmissive display panel for other mobile devices and peripheral devices. The present invention can also be applied to. Further, it can be used for other display devices such as a direct-view type projector. Then, as described above, a display device having a wide viewing angle and high brightness can be provided.

[0030]

As described above, according to the present invention, the reflection pattern forming the reflector (reflection surface) is formed so that the radiation angle corresponding to the shape of the display is a quadrangle. It is also possible to collect light from the corners where the angle of view becomes large toward the center. Therefore, it is possible to widen the range where the whole looks bright, that is, the viewing angle, and it is possible to provide a display device that is reflective and easy to see.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a field of view of reflected light having a circular cross section.

FIG. 2 is an explanatory diagram showing a visual field area of reflected light having a quadrangular cross section according to the present invention.

FIG. 3 is a diagram showing an outline of a mobile phone provided with a reflective liquid crystal panel using a reflective layer (reflector) according to the present invention.

FIG. 4 is a plan view schematically showing an outline of the reflector according to the present invention shown in FIG.

5 is a diagram schematically showing an outline of the reflector shown in FIG.

FIG. 6 is a diagram in which a reflection pattern is extracted and shown.

FIG. 7 is a diagram showing simulation results showing how the field of view area changes as the aspect ratio of the emission angle changes.

FIG. 8 is a graph showing the results obtained in FIG.

FIG. 9 is a graph showing a relationship between an effective visual field area and a visual distance depending on a radiation angle.

FIG. 10 is an illustration showing a viewing area of a panel by circular radiation, the reflection direction of which is inclined according to an angle of view.

FIG. 11 is an illustration showing a viewing area of a panel with similar radiation in which a reflection direction is inclined according to an angle of view.

[Explanation of symbols]

1 mobile phone 10 Liquid crystal panel (display device) 12 Liquid crystal cell 20 reflectors, 21 reflective surfaces 23 opening 26, 28 reflection pattern 70 light source, 71 incident light (illumination light) 72, 73 Emitted light (reflected light) 81 Field of view with rectangular radiation 82 Field of view due to circular radiation 86 Field of view due to similar radiation 87 Field of view with square radiation 88 Field of view with circular radiation

Claims (25)

[Claims] 1. An approximately rectangular transmissive display body having a reflector on the back surface thereof, and a reflector having a reflecting surface for reflecting incident light to the display body, wherein the aspect of the display body is The basic pattern is a concave or convex shape that forms a rectangular opening having an aspect ratio in the range of approximately 0.5 to 2 times the ratio, and a plurality of fine reflective patterns that are substantially similar to the basic pattern are the reflective surfaces. Display devices that are randomly arranged in the. 2. The display device according to claim 1, wherein the basic pattern has a shape in which reflected light is diffused in a quadrangular pyramid shape from the display body to the outside. 3. The display device according to claim 1, wherein an aspect ratio of an opening formed by the basic pattern is the same as an aspect ratio of the display body. 4. The display device according to claim 1, wherein the display body has an aspect ratio of 1.33, and the opening of the basic pattern has an aspect ratio of 0.63 to 2.82. 5. The display device according to claim 4, wherein the aspect ratio of the opening of the basic pattern is 1.33. 6. The display device according to claim 4, wherein the aspect ratio of the opening of the basic pattern is 1. 7. The reflector according to claim 1, wherein the reflection patterns of the same size are laid out so that there is almost no gap, and the reflection patterns of different sizes are preferentially arranged so as to overlap with each other. Display device. 8. The display device according to claim 1, wherein the display body is a liquid crystal display body, and the reflector is at least a part of an electrode of the liquid crystal display body. 9. An approximately rectangular transmissive display body having a reflector on the back surface thereof, and a reflector having a reflecting surface for reflecting incident light to the display body, wherein the aspect of the display body is The basic pattern is a concave or convex shape that reflects a light flux having a substantially rectangular cross section with an aspect ratio in the range of approximately 0.5 to 2 times the ratio, and a plurality of fine reflection patterns that are substantially similar to the basic pattern are A display device randomly arranged on the reflection surface. 10. The display device according to claim 9, wherein the basic pattern has a shape in which reflected light is diffused outward in a quadrangular pyramid shape from the display body. 11. The display device according to claim 9, wherein the aspect ratio of the cross section of the light beam reflected by the basic pattern is the same as the aspect ratio of the display body. 12. The reflector according to claim 9, wherein:
A display device in which the reflection patterns of the same size are laid out so that there are almost no gaps, and the reflection patterns of different sizes are preferentially arranged so as to overlap with each other. 13. The display device according to claim 9, wherein the display body is a liquid crystal display body, and the reflector is at least a part of an electrode of the liquid crystal display body. 14. A reflector having a reflecting surface for reflecting incident light to a display body, wherein a rectangular opening having an aspect ratio in the range of approximately 0.5 to 2 times the aspect ratio of the display body is formed. A reflector in which a concave or convex shape is used as a basic pattern, and a plurality of fine reflection patterns substantially similar to the basic pattern are randomly arranged on the reflecting surface. 15. The reflector according to claim 14, wherein the basic pattern has a shape that diffuses reflected light in a quadrangular pyramid shape outward from the display body. 16. The reflector according to claim 14, wherein the aspect ratio of the opening formed by the basic pattern is the same as the aspect ratio of the display body. 17. The reflector according to claim 14, wherein the display body has an aspect ratio of 1.33, and the opening of the basic pattern has an aspect ratio of 0.63 to 2.82. 18. The reflector according to claim 14, wherein the aperture of the basic pattern has an aspect ratio of 1.33. 19. The reflector according to claim 14, wherein the aspect ratio of the opening of the basic pattern is 1. 20. The reflector according to claim 14, wherein the display is a liquid crystal display, and the reflector is at least a part of an electrode of the liquid crystal display. 21. A reflector having a reflective surface for reflecting incident light to a display body, the reflector having a substantially rectangular cross section with an aspect ratio in the range of about 0.5 to 2 times the aspect ratio of the display body. A reflector in which a concave or convex shape that reflects a light flux is used as a basic pattern, and a plurality of fine reflection patterns that are substantially similar to the basic pattern are randomly arranged on the reflecting surface. 22. The reflector according to claim 21, wherein the basic pattern has a shape that diffuses reflected light in a quadrangular pyramid shape outward from the display body. 23. The reflector according to claim 21, wherein the aspect ratio of the cross section of the light beam reflected by the basic pattern is the same as the aspect ratio of the display body. 24. The reflection pattern according to claim 21, wherein the reflection patterns of the same size are laid out so that there is substantially no gap, and the reflection patterns of different sizes are preferentially arranged so as to overlap with each other. Reflector. 25. The reflector according to claim 21, wherein the display is a liquid crystal display, and the reflector is at least a part of an electrode of the liquid crystal display.