JP2001034195A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a display device capable of forming its display screen into various kinds of shapes including a concave shape and easily making the display screen large in area. SOLUTION: This flexible two-dimensional display device is constituted by using one-dimensional structural bodies 2, 3 as warps and wefts to be woven into a cloth. A light-emitting element consisting of a p-semiconductor layer 5 and n-semiconductor layer 6 is formed in the crossing part of the one- dimensional structural bodies 2, 3. Emission of light is caused by allowing current to flow into the light-emitting element in the crossing part through the one-dimensional structural bodies 2, 3. Or, the display device may be constituted by using a one-dimensional structural body in which a liquid crystal is sealed in the core.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a flexible display device capable of obtaining various display surface shapes.

[0002]

2. Description of the Related Art Conventionally, as a display device, a CRT, a liquid crystal display (LCD), a plasma display panel (PDP) and the like are known, and are used in a wide range of fields from industrial use to home use.

[0003]

However, since all of the conventional display devices are rigid, it has been difficult, for example, to make the display surface concave if necessary.

[0004] Therefore, the present invention provides a display device in which the shape of the display surface can be formed into various shapes including a concave shape as required, and which can easily cope with an increase in area. It is in.

[0005]

According to a first aspect of the present invention, a first one-dimensional structure and a second one-dimensional structure are provided so as to intersect with each other. A display device, wherein a light emitting element is formed by the first one-dimensional structure and the second one-dimensional structure at the intersection.

In the first aspect of the present invention, typically, light emission is caused by flowing a current to the light emitting element through the first one-dimensional structure and the second one-dimensional structure. The light emitting element is, for example, a light emitting diode or a semiconductor laser.

[0007] In the first aspect of the present invention,
For example, one of the first one-dimensional structure and the second one-dimensional structure has a structure in which a first conductive wire is sequentially covered with a semiconductor layer of a first conductivity type and a semiconductor layer of a second conductivity type. , The other consisting of the second conductor. Alternatively, one of the first one-dimensional structure and the second one-dimensional structure has a structure in which a first conductive wire is covered with a semiconductor layer of a first conductivity type, and the other has a second conductive wire in a second conductive structure. It has a structure covered with two semiconductor layers.

In the first aspect of the present invention, when performing full-color display, typically, the first one-dimensional structure and the second one-dimensional structure are for red, green, and blue. A red light emitting element is formed at the intersection of the first one-dimensional structure for red and the second one-dimensional structure for red, and the first one for green is formed. A green light emitting element is formed at the intersection of the two-dimensional structure and the second one-dimensional structure for green, and a first one-dimensional structure for blue and a second one-dimensional structure for blue are formed. Blue light emitting elements are formed at the intersections of.

According to a second aspect of the present invention, there is provided a display device using a one-dimensional structure in which liquid crystal is sealed in a core portion and a clad is formed of a transparent material.

According to a third aspect of the present invention, a first one-dimensional structure in which liquid crystal is sealed in a core portion and a cladding is formed of a transparent material and a second one-dimensional structure made of a conductive wire cross each other. It is a display device characterized by being provided as such.

In the second and third aspects of the present invention, in addition to the liquid crystal similar to those generally used for a liquid crystal display, the liquid crystal forms a spherical droplet (microdroplet). Those can also be used. Further, the clad may have a polarization field, for example.

In the second and third inventions of the present invention, typically, from one or both ends of the one-dimensional structure (second invention) or the first one-dimensional structure (third invention) Laser light is introduced into the core. When a display device is made full color, typically, red, green, and blue laser beams are used.

[0013] In the third aspect of the present invention, light is extracted at least on the outer peripheral surface of the first one-dimensional structure at a portion opposite to the second one-dimensional structure with the intersection portion interposed therebetween. A control structure for controlling, specifically, for example, an electrode for electric field control, typically a transparent electrode is provided. Then, by applying a voltage between the second one-dimensional structure and the transparent electrode, the orientation of the liquid crystal molecules inside the first one-dimensional structure is controlled, and one end of the first one-dimensional structure is controlled. Alternatively, laser light introduced into the core from both ends is scattered to extract light to the outside.

In the third invention of the present invention, the one-dimensional structure (second invention) or the first and second one-dimensional structures are respectively used for red, green and blue. A red laser beam is introduced into the core from one or both ends of the first one-dimensional structure for red,
Green laser light is introduced into the core from one end or both ends of the first one-dimensional structure for green, and blue laser light is introduced from one end surface of the first one-dimensional structure for blue.

In the third aspect of the present invention, a functional structure for effectively utilizing light extracted from the first one-dimensional structure is provided around the first one-dimensional structure as necessary. Provided. For example, a light reflection structure is provided to control the optical path of the extracted light. Alternatively, a multiple scatterer is provided, and the amount of light is controlled by multiple scattering of the extracted light. Further, an object to be excited may be provided, and the object may be taken out and excited with light, so that relaxation light that comes out thereafter may be used. The object to be excited is a phosphor or semiconductor fine particles. First
In the case of performing full-color display by using an ultraviolet laser beam as the laser beam to be incident on the one-dimensional structure described above, three types of red, green, and blue light are used as the excitation target. Alternatively, in order to increase the light extraction efficiency from the first one-dimensional structure, the first one-dimensional structure is preferably formed to have a non-linear shape, particularly a periodically wavy shape.

In the present invention, a display device is typically formed by weaving a first one-dimensional structure and a second one-dimensional structure. This display device generally has the shape of a cloth or a film, and can be formed to be sufficiently flexible and extremely thin. The display surface of this display device can be formed into a flat surface or a curved surface depending on the application, and the curved surface can be formed into various shapes including a concave shape such as a cylindrical surface, a semi-cylindrical surface, and a hemispherical surface. In these cases, the display surface can be a seamless smooth surface.

In the present invention, the one-dimensional structure is typically formed in a linear shape, but may be formed in a tape shape, for example. In addition, the diameter of the one-dimensional structure is determined according to the function and application to be given to the one-dimensional structure, but is generally, for example, on the order of mm or less. The material of the one-dimensional structure is selected according to the purpose, but when it is used as a simple conductor, a metal, particularly a material having a low resistivity, is suitably used.

According to the present invention constructed as described above, by weaving using the one-dimensional structure as a kind of fiber material, a two-dimensional spread and a sufficiently flexible ultra-thin display is provided. The device can be obtained in the required area. Since the display device is thus flexible, the display surface can be easily formed into a concave shape by, for example, bending the display device.

[0019]

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

FIG. 1 is a schematic diagram showing a color display according to a first embodiment of the present invention, FIG. 2 is an enlarged view of a part of the color display, and FIG. 3 is a cross-sectional view of the one-dimensional structure in FIG. It is an enlarged view.

As shown in FIG. 1, FIG. 2 and FIG. 3, this color display 1 tightly knits a warp composed of a fibrous one-dimensional structure 2 and a weft composed of the same fibrous one-dimensional structure 3. It is composed of a tight-bound fabric.
These one-dimensional structures 2 and 3 have a set of three adjacent ones, and three of each set have a red color (R),
It is for green (G) and blue (B). And
One set of one-dimensional structures 2 and one set of one-dimensional structures 3 constitute one pixel.

As shown in FIG. 3, the one-dimensional structure 2 is constituted by a metal wire, and the one-dimensional structure 3 is formed by sequentially covering the outer periphery of the metal wire 4 with a p-type semiconductor layer 5 and an n-type semiconductor layer 6. A light emitting diode structure is formed. At each intersection of these one-dimensional structures 2 and 3, n of the one-dimensional structure 3
The mold semiconductor layer 6 is electrically connected to a metal wire forming the one-dimensional structure 2. Here, the one-dimensional structure 3 for R
The material of the p-type semiconductor layer 4 and the n-type semiconductor layer 5 is, for example, GaP or AlGaInP. The material of the p-type semiconductor layer 4 and the n-type semiconductor layer 5 of the one-dimensional structure 3 for G is, for example, a ZnSe-based semiconductor. As the material of the p-type semiconductor layer 5 and the n-type semiconductor layer 6 of the one-dimensional structure 3 for B, for example, a GaN-based semiconductor can be used.

In the color display 1 configured as described above, a forward current is caused to flow through the one-dimensional structure 2 and the one-dimensional structure 3 selected according to the image signal to the light emitting diode at the intersection thereof. Causes light emission to display a desired color image.

According to the first embodiment, a cloth-like flexible ultra-thin color display capable of full-color display of a current drive type can be realized.

FIG. 4 is an enlarged view of a part of a color display according to a second embodiment of the present invention, and FIG. 5 is an enlarged view of an intersection of the one-dimensional structure in FIG. The overall configuration of this color display is the same as that shown in FIG.

As shown in FIGS. 4 and 5, the color display 1 is composed of a tight-bound fabric in which a warp composed of a one-dimensional structure 2 and a weft composed of a one-dimensional structure 3 are tightly knitted. The three one-dimensional structures 2, 3 adjacent to each other form a set, and
The books are for R, G and B respectively, and a set of 1
Although one pixel is constituted by the two-dimensional structure 2 and a set of one-dimensional structures 3, as in the first embodiment,
The structures of the one-dimensional structures 2 and 3 are different from those of the first embodiment. That is, in the second embodiment, the one-dimensional structure 2 forming the warp is formed by covering the outer periphery of the metal wire 7 with the n-type semiconductor layer 6, and the one-dimensional structure 3 forming the weft is formed of metal. The outer periphery of the line 4 is covered with a p-type semiconductor layer 5. At each intersection of the one-dimensional structures 2 and 3, the n-type semiconductor layer 62 of the one-dimensional structure 2 and the p-type semiconductor A light emitting diode structure is formed by a pn junction with the type semiconductor layer 5. Here, the n-type semiconductor layer 6 of the one-dimensional structure 2 for R and the p-type
As a material of the type semiconductor layer 5, for example, GaP or AlGaI
Examples of the material of the n-type semiconductor layer 6 of the one-dimensional structure 2 for G and the p-type semiconductor layer 5 of the one-dimensional structure 3 for G, such as nP, include a ZnSe-based semiconductor and a material of the one-dimensional structure 2 for B. n
As the material of the p-type semiconductor layer 5 of the one-dimensional structure 3 for the type semiconductor layer 6 and B, for example, a GaN-based semiconductor can be used.

In the color display 1 configured as described above, a forward current is caused to flow through the one-dimensional structure 2 and the one-dimensional structure 3 selected according to the image signal to the light emitting diode at the intersection thereof. Causes light emission to display a desired color image.

According to the second embodiment, similarly to the first embodiment, it is possible to realize a cloth-like flexible ultrathin color display capable of full-color display of a current drive type.

Next, a color display according to a third embodiment of the present invention will be described.

FIG. 6A is a schematic diagram showing a part of a color display according to the third embodiment, FIG. 6B is a sectional view taken along the line BB 'of FIG. 6A, and FIG. 6C is CC of FIG. 6A.
FIG. 3 is a cross-sectional view along the line. The overall configuration of this color display is the same as that shown in FIG.

As shown in FIGS. 6A, 6B, and 6C, the color display 11 includes a warp composed of two kinds of one-dimensional structures 12, 13 and a weft composed of two kinds of one-dimensional structures 14, 15. It is composed of a tightly woven tight-bound fabric. One of the warp yarns
The two-dimensional structure 12 is made of a metal wire or a metal wire whose outer peripheral surface is covered with an insulating layer (not shown).
The one-dimensional structures 13 and 13 are alternately used. The one-dimensional structure 14, which is one weft, has a hollow structure as shown in FIGS. 7 and 8, a liquid crystal 16 is sealed in a core portion, and a clad 17 around the core is made of a transparent material. Further, a transparent electrode 18 is provided on the outer peripheral surface of the clad 17 on the side opposite to the one-dimensional structure 12. The one-dimensional structure 14 is a set of three pieces, each of which has R,
For G and B. One-dimensional structure 1 that is the other weft
Numeral 5 is made of an insulator line, and is used for each set of one-dimensional structures 14. Here, it is characteristic that the one-dimensional structure 14 undulates at the same period as the interval of the one-dimensional structure 12.

As a material of the clad 17 of the one-dimensional structure 14, an organic substance (plastic), for example, PMMA (polymethyl methacrylate), a fluorinated polymer, or the like can be used. The liquid crystal 16 may be basically any liquid crystal. For example, a liquid crystal compound having a fluoromethoxy group, a trifluoro compound, or the like can be used.

In the color display 11 configured as described above, as shown in FIG.
And B, a red light source, a green light source, and a blue light source are respectively incident on one end surface of the one-dimensional structure 14 from a laser light source (not shown). Then, a predetermined voltage is applied between the one-dimensional structure 12 selected according to the image signal and the transparent electrode 18 of the one-dimensional structure 14. Specifically, for example, the transparent electrode 18 is grounded, and a positive voltage is applied to the one-dimensional structure 12 made of a metal wire. By applying this voltage, 1
The orientation of the molecules of the liquid crystal 16 sealed in the one-dimensional structure 14 is changed by an electric field, and the red, green, and blue laser lights introduced into each one-dimensional structure 14 are scattered, and the scattered light is generated on the display surface. Side (FIG. 10). Thus, a desired color image is displayed.

From the viewpoint of improving the light extraction efficiency, it is important that even a small amount of light scattering due to a change in the orientation of the molecules of the liquid crystal 16 due to the application of a voltage tends to deviate from the total reflection condition. Therefore, as shown in FIG. 10, the angle theta of the undulation of the one-dimensional structure 14 in the relation of the critical angle theta _c and θ ≦ θ _c. Most preferably set to Shita～shita _c From the viewpoint of effectively performing the scattering by the molecules of the liquid crystal 16.

According to the third embodiment, a cloth-like flexible ultra-thin color display capable of full-color display of a voltage control type can be realized.

Next, a color display according to a fourth embodiment of the present invention will be described. In the fourth embodiment, as a one-dimensional structure 14 which is a weft, polymer-dispersed liquid crystal is sealed in a core portion. Is used. Specifically, for example, as shown in FIG.
In the core portion of No. 4, a polymer 19 in which spherical droplets (microdroplets) 20 of a nematic liquid crystal are dispersed is sealed. The clad 17 has a polarization field as shown by the arrow in FIG. Providing the clad 17 with a polarization field in this way is effective for better aligning the liquid crystal, and the good alignment can minimize light loss. The other configuration is the same as that of the third embodiment, and the description is omitted.

In this color display, red, green and blue laser lights are respectively incident on one end or both ends of a set of one-dimensional structures 14 for weft threads R, G and B from a laser light source not shown. . And
A predetermined voltage is applied between the one-dimensional structure 12 selected according to the image signal and the transparent electrode 18 of the one-dimensional structure 14. Specifically, for example, the transparent electrode 18 is grounded, and a positive voltage is applied to the one-dimensional structure 12 made of a metal wire. By this voltage application, the orientation of the liquid crystal molecules in the spherical droplet 20 sealed in the one-dimensional structure 14 was changed by an electric field, and the refractive index was changed to thereby introduce the liquid crystal molecules into each one-dimensional structure 14. The red, green, and blue laser lights are scattered so that the scattered light is extracted to the display surface side (FIG. 12). Thus, a desired color image is displayed.

According to the fourth embodiment, similarly to the third embodiment, it is possible to realize a cloth-like flexible ultra-thin color display capable of full-color display of a voltage control type.

In the above-described third and fourth embodiments, after light is extracted from the one-dimensional structure 14 to the outside, light is displayed on the outer peripheral surface of the one-dimensional structure 13 as shown in FIG. It can be reflected in a direction almost perpendicular to the surface,
As shown in FIG. 4, light emitted from the one-dimensional structure 14 is converted into, for example, ground glass-like multiplex provided on the transparent electrode 18 of the one-dimensional structure 14 at a portion between the one-dimensional structures 12 adjacent to each other. By causing the light to enter the scatterer 21 to cause multiple scattering, the light can be reflected in a direction substantially perpendicular to the display surface. According to the former method, the light appears to emerge from above the one-dimensional structure 12, and according to the latter method, the light emerges from above the portion between the one-dimensional structures 12. appear.

Further, as shown in FIG. 15, in the third and fourth embodiments, the ultraviolet laser light is used as the light for guiding the one-dimensional structure 14, and the space between the one-dimensional structures 12 adjacent to each other is used. Red by excitation with ultraviolet light on the transparent electrode 18 of the one-dimensional structure 14 at the portion
An excitation target 22 made of a phosphor or a compound semiconductor fine particle that emits green or blue light is provided, and ultraviolet light emitted from the one-dimensional structure 14 is incident on the excitation target 22 to excite the excitation target 22 so that the display surface is almost completely exposed. Red, green or blue light can be emitted in a vertical direction.

Next, actual applications of the color display according to the first, second, third and fourth embodiments will be described.

In the example shown in FIG. 16, a large-area color display 102 is installed on one side of a flat wall 101 of a square room.

In the example shown in FIG. 17, a large-area color display 201 extending on one surface of a semi-cylindrical wall 201 extending at an estimated angle π is installed.

In the example shown in FIG. 18, a large-area color display 301 extending on one surface of a cylindrical wall extending at an estimated angle of 2π is installed. Here, the seam of the color display 301 can be eliminated. That is, as shown in FIG. 19, the both ends of the color display 301 are overlapped, and the light guide 30 is moved from the end face of the outer end.
Laser light is made incident through the light source 2. By doing so, the seams of the color display 301 are eliminated, and an estimated angle of 2π can be obtained.

In the example shown in FIG. 20, a color display 401 is installed at a solid angle of 2π on one surface of a dome-shaped ceiling. The color display 401 has nothing to block the field of view, and can be applied to uses such as a planetarium.

According to the color display shown in FIGS. 16, 17, 18 and 20, a display surface having a large expected angle can be obtained even at a distance of 1 m from the viewer. In the color display shown in FIG. 18, it is possible to obtain a concave display surface having an angle of π or 2π or an expected angle close thereto, and in the color display shown in FIG. Can be.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications based on the technical idea of the present invention are possible.

For example, the method of knitting the one-dimensional structure constituting the color display according to the first to fourth embodiments may be changed to another method as required. Instead of causing light emission by passing a current, light emission can be caused by light. That is, by using semiconductor light emission by light excitation, or by using a difference frequency generated by guiding photons to the first and second one-dimensional structures for the liquid crystal, μs
Switching can be performed by inducing a slow electric field oscillation of the order of ec.

[0049]

As described above, according to the present invention, it is possible to form a flexible display surface using a fabric using a one-dimensional structure and to form the display surface into an arbitrary curved surface shape including a concave shape. A two-dimensional display device that can be configured can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a color display according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a part of the color display shown in FIG.

FIG. 3 is an enlarged view of an intersection of a one-dimensional structure in FIG. 2;

FIG. 4 is an enlarged view of a part of a color display according to a second embodiment of the present invention.

FIG. 5 is an enlarged view of an intersection of the one-dimensional structure in FIG.

FIG. 6 is a schematic diagram and a sectional view showing a color display according to a third embodiment of the present invention.

FIG. 7 is a sectional view of a one-dimensional structure of a weft in a color display according to a third embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view along a central axis of a one-dimensional structure of a weft in a color display according to a third embodiment of the present invention.

FIG. 9 is a cross-sectional view along a central axis of a one-dimensional structure of a weft in a color display according to a third embodiment of the present invention.

FIG. 10 is an enlarged cross-sectional view along a central axis of a one-dimensional structure of a weft in a color display according to a third embodiment of the present invention.

FIG. 11 is an enlarged cross-sectional view along a central axis of a one-dimensional structure of a weft in a color display according to a fourth embodiment of the present invention.

FIG. 12 is an enlarged cross-sectional view along a central axis of a one-dimensional structure of a weft in a color display according to a fourth embodiment of the present invention.

FIG. 13 is a cross-sectional view for explaining how to extract light from the one-dimensional structure to the outside according to the third or fourth embodiment of the present invention.

FIG. 14 is a cross-sectional view for explaining how to extract light from the one-dimensional structure to the outside according to the third or fourth embodiment of the present invention.

FIG. 15 is a cross-sectional view for explaining how to extract light from the one-dimensional structure to the outside according to the third or fourth embodiment of the present invention.

FIG. 16 is a schematic diagram showing an application example of the color display according to the first to fourth embodiments of the present invention.

FIG. 17 is a schematic diagram illustrating an application example of the color display according to the first to fourth embodiments of the present invention.

FIG. 18 is a schematic diagram illustrating an application example of the color display according to the first to fourth embodiments of the present invention.

19 is an enlarged view of a joint portion of the color display shown in FIG.

FIG. 20 is a schematic diagram showing an application example of the color display according to the first to fourth embodiments of the present invention.

[Explanation of symbols]

1, 11, 102, 201, 301, 401 ... color display, 2, 3, 12, 13, 14, 15, ...
One-dimensional structure, 4, 7, metal line, 5 p-type semiconductor layer, 6 n-type semiconductor layer, 16 liquid crystal, 17
... clad, 18 ... transparent electrode, 19 ... polymer, 20 ... spherical droplet, 21 ... multiple scatterer, 2
2 ... object to be excited

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2H091 FA24X FA24Y FA24Z FA45X FA45Y FA45Z FA46X FA46Y FA46Z FA50X FA50Y FA50Z GA01 GA11 GA13 JA02 LA15 LA30 5C094 AA01 AA14 BA23 BA43 CA19 CA24 DA05 EB10 ED01

Claims (19)

[Claims] 1. A first one-dimensional structure and a second one-dimensional structure are provided to intersect with each other, and the first one-dimensional structure and the second one-dimensional structure at the intersection are provided. And a light emitting element is formed by the method. 2. The first one-dimensional structure and the second one-dimensional structure.
The display device according to claim 1, wherein the display device is formed by weaving the three-dimensional structure. 3. The display device according to claim 1, wherein the display device has a shape of a cloth or a film. 4. The display device according to claim 1, wherein the display surface is a flat surface or a curved surface. 5. The first one-dimensional structure and the second one-dimensional structure.
2. The display device according to claim 1, wherein a current is caused to flow through the light emitting element through the one-dimensional structure to cause light emission. 6. The first one-dimensional structure and the second one-dimensional structure.
One of the one-dimensional structures has a structure in which a first conductive wire is sequentially covered with a semiconductor layer of a first conductive type and a semiconductor layer of a second conductive type, and the other is formed of a second conductive wire. The display device according to claim 1. 7. The first one-dimensional structure and the second one-dimensional structure.
One of the one-dimensional structures has a structure in which a first conductor is covered with a semiconductor layer of a first conductivity type, and the other has a structure in which a second conductor is covered with a second semiconductor layer. The display device according to claim 1, wherein: 8. The first one-dimensional structure and the second one-dimensional structure.
Are provided for red, green, and blue, respectively. The red one-dimensional structure is provided at the intersection between the first one-dimensional structure for red and the second one-dimensional structure for red. A light emitting element for emitting light is formed, a light emitting element for emitting green light is formed at an intersection of the first one-dimensional structure for green and the second one-dimensional structure for green, and the light emitting element for blue is formed. 2. The display device according to claim 1, wherein a blue light-emitting element is formed at an intersection of the one one-dimensional structure and the second one-dimensional structure for blue. 9. A display device comprising a one-dimensional structure in which liquid crystal is sealed in a core portion and a clad is formed of a transparent material. 10. A liquid crystal is sealed in a core portion, and a first one-dimensional structure having a clad formed of a transparent material and a second one-dimensional structure made of a conductive wire are provided to intersect with each other. A display device characterized by the above-mentioned. 11. The display device according to claim 10, wherein the display device is formed by weaving the first one-dimensional structure and the second one-dimensional structure. 12. The display device according to claim 10, wherein the display device has a shape of a cloth or a film. 13. The display device according to claim 10, wherein the display surface is a flat surface or a curved surface. 14. The display device according to claim 10, wherein said liquid crystal forms spherical droplets. 15. The display device according to claim 10, wherein a laser beam is introduced from one end or both ends of said first one-dimensional structure into said core portion. 16. At least a portion of the first one-dimensional structure on a side opposite to the second one-dimensional structure across the intersection.
The display device according to claim 10, wherein a transparent electrode is provided on an outer peripheral surface of the one-dimensional structure. 17. The liquid crystal device according to claim 1, wherein a voltage is applied between said second one-dimensional structure and said transparent electrode to control the orientation of said liquid crystal molecules inside said first one-dimensional structure. 11. The device according to claim 10, wherein the laser light introduced into the core portion is scattered from the one or both ends of the one-dimensional structure to extract light to the outside.
The display device according to the above. 18. The first one-dimensional structure and the second one-dimensional structure are provided for red, green, and blue, respectively. Introducing red laser light into the core from one or both ends, introducing green laser light into the core from one or both ends of the first one-dimensional structure for green,
The display device according to claim 10, wherein blue laser light is introduced into the core portion from the one end or both ends of the first one-dimensional structure for blue. The first one-dimensional structure and the second one-dimensional structure are provided for red, green, and blue, respectively, and the first one-dimensional structure for red is provided. An ultraviolet laser beam is introduced from said one end or both end surfaces of said first one-dimensional structure for green and said first one-dimensional structure for blue into said core portion. 10. The display device according to 10.