Abstract:
A reflecting apparatus comprising: an array of reflectors including a first subset of reflectors and a second subset of reflectors, wherein the first subset of reflectors guide light toward a first viewing position and the second subset of reflectors guide light toward a second viewing position that is different from the first viewing position.

Description:
CROSS REFERENCES TO RELATED APPLICATIONS 
       [0001]    The present application claims priority to Japanese Patent Application JP 2009-194188 filed on Aug. 25, 2009, the entire contents of which is hereby incorporated by reference. 
       BACKGROUND 
       [0002]    The present disclosure relates to a stereoscopic image displaying device and a method of manufacturing the same, and more particularly to a display device for displaying thereon a three-dimensional stereoscopic image by using a naked-eye system and a method of manufacturing the same with which the display device for displaying thereon the three-dimensional stereoscopic image using the naked-eye system can be readily manufactured. 
         [0003]    In recent years, three-dimensional stereoscopic image contents based on which an image can be sterically visualized have attracted attention. With regard to an appreciation system for a three-dimensional stereoscopic image, a binocular parallax system for causing a viewer to appreciate an image for a left-hand side eye, and an image for a right-hand side eye for which a parallax is provided is being widely used. With regard to the binocular parallax system, there are roughly given two kinds of systems, that is, a glass system using a pair of glasses, and a naked-eye system using no pair of glasses. 
         [0004]    In addition, the glass system is classified into a polarization system and a shutter system. In this case, in the polarization system, an image for a left-hand side eye, and an image for a right-hand side eye are separated from each other by utilizing a difference in polarization as a property of a light. Also, in the shutter system, a pair of glasses is given a shutter function of alternately opening and closing a right-hand side glass and a left-hand side glass, and an operation of the shutter is synchronized with an image for a left-hand side eye, and an image for a right-hand side eye which are displayed in a time division manner. The glass system has a merit that the image for the left-hand side eye, and the image for the right-hand side eye can be relatively, readily separated from each other. On the other hand, it can also be said that the glass system has a burden that it is necessary to plank a pair of glasses on the viewer&#39;s nose as a demerit. 
         [0005]    On the other hand, the naked-eye system is classified into a lenticular screen system, a parallax barrier system and the like. The lenticular screen system, as shown in  FIG. 1 , is a system such that hog-backed fine lenses (lenticular lenses) are disposed, thereby separating an optical path of an image for a left-hand side eye, and an optical path of an image for a right-hand side eye from each other. On the other hand, the parallax barrier system, as shown in  FIG. 2 , is a system such that an optical path of an image for a left-hand side eye, and an optical path of an image for a right-hand side eye are separated from each other by longitudinal slits (parallax barriers). It is noted that “Lx” and “Rx” (x: numeral) in  FIGS. 1 and 2  represent a pixel in which the image for the left-hand side eye, and the image for the right-hand side eye are displayed, respectively. 
         [0006]    The naked-eye system has a merit such that contrary to the glass system, the burden imposed on the viewer is less because it is unnecessary to plank a pair of glasses on the viewer&#39;s nose. On the contrary, although the naked-eye system has a side such that an observation position and a visible range are limited, the practical use of the naked-eye system has progressed in a display device of a mobile phone or a personal computer in which the observation position and the visible range are relatively limited. 
         [0007]    A liquid crystal display device, and an organic Electro Luminescent (EL) display device using an organic EL element as a self-light emitting element are known as the display device for displaying thereon a three-dimensional stereoscopic image. In some of the organic EL display devices, a reflector is provided in the periphery of the self-light emitting element, thereby enhancing an efficiency of taking out a light for light emission made by the self-light emitting element. This organic EL display device, for example, is described in Japanese Patent Laid-Open No. 2008-218296. 
       SUMMARY 
       [0008]    In the parallax barrier system and the lenticular screen system, the pixels in which the image for the left-hand side eye is displayed, and the pixels in which the image for the right-hand side eye is displayed are alternately disposed in any one of the horizontal direction or the vertical direction, whereby the image for the left-hand side eye, and the image for the right-hand side eye are separated from each other so as to enter the left-hand side eye and the right-hand side eye of the viewer, respectively. For this reason, barrier processing by the very fine lenses needs to be carried out so that the vertical stripes of the barriers become inconspicuous, and also the lenses and the barriers need to be precisely aligned with each other so as to correspond to the display surface. In particular, in the liquid crystal display device, the lenticular lenses or the film having the parallax barriers formed thereon need to be precisely aligned with the pixels of the liquid crystal, respectively. Therefore, since the accurate processing needs to be additionally carried out, there is caused such a problem that the cost is increased as compared with the normal display device. 
         [0009]    The embodiments solve the problems described above, and are therefore desirable to provide a display device for displaying thereon a three-dimensional stereoscopic image by using a naked-eye system and a method of manufacturing the same with which the display device for the three-dimensional stereoscopic image by using the naked-eye system can be readily manufactured. 
         [0010]    According to an embodiment, a reflecting apparatus includes an array of reflectors including a first subset of reflectors and a second subset of reflectors. The first subset of reflectors guide light toward a first viewing position and the second subset of reflectors guide light toward a second viewing position that is different from the first viewing position. 
         [0011]    In another embodiment, a display device includes a pixel array including a plurality of pixels, each pixel including a light emitting portion, and a plurality of reflectors, one of said reflectors provided on a front surface of each of the pixels. The plurality of reflectors include a first subset of reflectors that direct light emitted from the respective light emitting portions toward a first viewing position, and a second subset of reflectors that direct light emitted from the respective light emitting portions toward a second viewing position that is different from the first viewing position. 
         [0012]    In another embodiment, a stereoscopic video display system includes a pixel array including a plurality of pixels, each pixel including a light emitting portion, and a plurality of reflectors, one of said reflectors provided on a front surface of each of the pixels. In this embodiment, the light emitting portions cooperate with the reflectors to enable stereoscopic display of images in a plurality of different rotational orientations of the stereoscopic video display system. 
         [0013]    As set forth hereinabove, according to the embodiments, it is possible to provide the stereoscopic image displaying device which displays thereon the three-dimensional stereoscopic image by using the naked-eye system and which can be readily manufactured, and the method of manufacturing the same with which the stereoscopic image displaying device for displaying thereon the three-dimensional stereoscopic image by using the naked-eye system can be readily manufactured. 
         [0014]    Additional features and advantages are described herein, and will be apparent from the following Detailed Description and the figures. 
     
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         [0015]      FIG. 1  is a schematic view explaining an existing lenticular screen system; 
           [0016]      FIG. 2  is a schematic view explaining an existing parallax barrier system; 
           [0017]      FIG. 3  is a block diagram showing a configuration of a display device according to an embodiment; 
           [0018]      FIG. 4  is a circuit diagram showing a circuit configuration of one pixel in the display device according to the embodiment; 
           [0019]      FIG. 5  is a cross sectional view of a pixel array portion in the display device shown in  FIG. 3 ; 
           [0020]      FIG. 6  is an enlarged view of a part of the pixel array portion in the display device shown in  FIG. 3 ; 
           [0021]      FIG. 7  is a perspective view showing a construction of a reflector shown in  FIGS. 5 and 6 ; 
           [0022]      FIG. 8  is a cross sectional view showing a method of forming the reflector shown in  FIGS. 5 and 6 ; 
           [0023]      FIG. 9  is a cross sectional view showing formation of the reflector shown in  FIGS. 5 and 6 ; 
           [0024]      FIGS. 10A and 10B  are respectively diagrams each showing a first disposition example of pixels for a left-hand side eye, and pixels for a right-hand side eye; 
           [0025]      FIG. 11  is a diagram showing a second disposition example of pixels for the left-hand side eye, and pixels for the right-hand side eye; 
           [0026]      FIG. 12  is a diagram showing a third disposition example of pixels for the left-hand side eye, and pixels for the right-hand side eye; 
           [0027]      FIG. 13  is a diagram showing an extended case of the third disposition example of the pixels for the left-hand side eye, and the pixels for the right-hand side eye; 
           [0028]      FIG. 14  is a perspective view showing a television receiver as a concrete example of an electronic apparatus to which the display device of the embodiment is applied; 
           [0029]      FIGS. 15A and 15B  are respectively a perspective view showing a digital camera as another concrete example of the electronic apparatus to which the display device of the embodiment is applied when viewed from a front side, and a perspective view showing the digital camera as the another concrete example of the electronic apparatus to which the display device of the embodiment is applied when viewed from a back side; 
           [0030]      FIG. 16  is a perspective view showing an exterior appearance of a video camera as still another concrete example of the electronic apparatus to which the display device of the embodiment is applied; 
           [0031]      FIGS. 17A and 17B  are respectively a front view showing an exterior appearance of a mobile phone as yet another concrete example of the electronic apparatus to which the display device of the embodiment is applied in a state in which chassis are opened, and a front view showing the exterior appearance of the mobile phone as the yet another concrete example of the electronic apparatus to which the display device of the embodiment is applied in a state in which the chassis are closed; and 
           [0032]      FIG. 18  is a perspective view showing an exterior appearance of a notebook-size personal computer as a further concrete example of the electronic apparatus to which the display device of the embodiment is applied. 
       
    
    
     DETAILED DESCRIPTION 
       [0033]    Embodiments will be described in detail hereinafter with reference to the accompanying drawings. 
         [0034]    Configuration of Display Device 
         [0035]      FIG. 3  is a block diagram showing a configuration of a display device according to an embodiment. 
         [0036]    The display device  1  shown in  FIG. 3  is a stereoscopic image displaying device which can display thereon a three-dimensional stereoscopic image, and is also an active matrix display device which uses an organic EL element as a light emitting element, and which is referred to as an organic EL display device. 
         [0037]    A substrate  10  of the display device  1  is composed of a pixel array portion  10   a  and a peripheral circuit portion  10   b . A plurality of scanning lines  11  and a plurality of signal lines  12  are disposed transversely and longitudinally in the pixel array portion  10   a , respectively. Also, a plurality of pixels  21  are disposed in a matrix in a plane in such a way that one pixel  21  is disposed so as to correspond to an intersection portion between one scanning line  11  and one signal line  12 . A scanning line driving circuit  13  and a signal line driving circuit  14  are disposed in the peripheral circuit portion  10   b . In this case, the scanning line driving circuit  13  successively drives and scans a plurality of scanning lines  11 . Also, the signal line driving circuit  14  supplies a video signal (that is, an input signal) corresponding to luminance information to a plurality of signal lines  12 . 
         [0038]    It is noted that the organic EL elements corresponding to color components of R, G and B, respectively, are woven with one another in the pixel array portion  10   a  in order to carry out full color compliant image display, and are pattern-disposed in a matrix so as to comply with a predetermined rule. Although the number of dispositions of organic EL elements, and formation areas of the organic EL elements are expected to be equal among the individual color components, the number of dispositions of organic EL elements, and the formation areas of the organic EL elements may be made different among the individual color components so as to correspond to energy components by the individual color component. 
         [0039]    Pixel Circuit of Pixel  21   
         [0040]      FIG. 4  shows a circuit configuration of the pixel  21 . 
         [0041]    The pixel  21  is composed of an organic EL element  22  as a self-light emitting element, a drive transistor Tr 1 , a write transistor (scanning transistor) Tr 2 , and a storage capacitor Cs. In the pixel  21 , by the driving operation made by the scanning line driving circuit  13 , the video signal which is written from the corresponding one of the signal lines  21  to the pixel  21  through the write transistor Tr 2  is held in the storage capacitor Cs. Also, a current corresponding to an amount of video signal thus held is supplied to the organic EL element  22 , so that the organic EL element  22  emits a light at a luminance corresponding to a value of the current. 
         [0042]    It should be noted that the configuration of the pixel circuit as described above is merely as example, and thus a capacitor(s) may be provided in the pixel  21  as may be necessary, or the pixel circuit may be configured by providing a plurality of transistors in the pixel  21 . In addition, a necessary drive circuit can be added to the peripheral circuit portion  10   b  in accordance with the change of the pixel circuit. 
         [0043]    In the display device  1  having the circuit configuration as described above, the pixels  21  are allotted to the pixels  21  which display thereon an image for a left-hand side image (hereinafter referred to as “the pixel  21  for a left-hand side image” as well), and the pixels  21  which display thereon an image for a right-hand side image (hereinafter referred to as “the pixel  21  for a right-hand side image” as well). Also, lights of the image for the left-hand side eye emitted from the pixels  21  for the left-hand side eye, or lights of the image for the right-hand side image emitted from the pixels  21  for the right-hand side image are made incident to the left-hand side eye or the right-hand side eye of a viewer, respectively, thereby making it possible for the viewer to appreciate a three-dimensional stereoscopic image by his/her naked-eyes. 
         [0044]    Shape of Front Surface of Pixel Array Portion  10   a    
         [0045]      FIG. 5  is a cross sectional view showing a structure of the pixel array portion  10   a.    
         [0046]    The pixel array portion  10   a  includes reflectors  31  each of which plays a part of a reflecting mirror, and which are provided on front surfaces of the pixels  21 , respectively. It is noted that in  FIG. 5 , only the pixels  21  on both sides of the pixel array portion  10   a , and the reflectors  31  corresponding thereto are designated with reference numerals  21  and  31 , respectively. 
         [0047]    The reflector  31 , as shown in  FIG. 5 , guides the light of the image for the left-hand side eye emitted from the pixel  21  for the left-hand side eye, and the light of the image for the right-hand side eye emitted from the pixel  21  for the right-hand side eye in a direction of the left-hand side eye of the viewer, and in a direction of the right-hand side eye of the viewer, respectively. That is to say, the display device  1  separates an optical path of the image for the left-hand side eye, and an optical path of the image for the right-hand side eye from each other by the reflector  31 , thereby making it possible for the viewer to appreciate the three-dimensional stereoscopic image by his/her naked-eyes. 
         [0048]      FIG. 6  is an enlarged view of a part of the pixel array portion  10   a  shown in  FIG. 5 . 
         [0049]    As shown in  FIG. 6 , the reflector  31  is formed at a predetermined angle so as to have a trapezoidal shape when viewed from a side surface side. Thus, a center of an optical axis of a light from the pixel  21  for the right-hand side eye is directed to the right-hand side eye of the viewer, and a center of an optical axis of a light from the pixel  21  for the left-hand side eye is directed to the left-hand side eye of the viewer. 
         [0050]      FIGS. 5 and 6  are respectively cross sectional views in the case where the pixel array portion  10   a  is viewed from the vertical direction. However, in the case as well where the pixel array portion  10   a  is viewed from the horizontal direction, similarly to the case of  FIG. 6 , an inclination of the reflector  31  is formed on the pixel  21  in such a way that the center of the optical axis is directed to the left-hand side eye or right-hand side eye of the viewer. 
         [0051]      FIG. 7  is a perspective view showing a shape of the reflector  31  in predetermined one pixel  21 . 
         [0052]    As shown in  FIG. 7 , the reflector  31  has a conical mirror surface with a light emission surface  41  of an organic EL element  22  as a center for one pixel  21  as with a headlight of an automobile. In addition, in the reflector  31 , a function of adjusting an angle as an optical axis of the headlight is determined by a conical inclination (angle) of the reflector  31 . The conical inclination of the reflector  31  can be set (changed) every pixel  21  in accordance with a distance set as the size of the display device  1  and a distance to the viewer. 
         [0053]      FIG. 8  is a cross sectional view showing a method of forming the reflector  31 . It is noted that in  FIG. 8 , the conical inclinations of the reflectors  31  are unified for the individual pixels  21  for the sake of simplicity of illustration. 
         [0054]    The light emission surface  41  side of each of the pixels  21  is covered with an adhesive agent layer  42  and a transparent substrate  43 . Each of the adhesive agent layer  42  and the transparent substrate  43  has a light permeability. However, the transparent substrate  43  is molded to have irregularities so as to correspond to the light emission surface  41 . Also, a light reflecting surface  31   a  formed from either a metallic reflecting layer made of aluminum (Al) or silver (Ag) and having a high light reflectivity, or a multilayer thin film containing the metallic reflecting layer is formed in a part of an interface between the adhesive agent layer  42  having the irregularities, and the transparent substrate  43 . 
         [0055]    That is to say, a surface of the adhesive agent layer  42  which is erected in the periphery of the light emission surface  41  so as to protrude along the light emission direction is covered with either the metallic reflecting layer or the multilayer thin film to form the light reflecting surface  31   a , thereby making it possible to construct the reflector  31 . Also, the light emission surface  41  and the light reflecting surface  31   a  of the reflector  31  are each covered with the transparent substrate  43  having the light permeability. As a result, after a light from the light emission surface  41  is reflected by the light reflecting surface  31   a  of the reflector  31  as may be necessary, the light thus reflected is emitted from a surface of the transparent substrate  43  toward a side of an air layer contacting the surface of the transparent substrate  43 . 
         [0056]    It is noted that the pixel  21  described above is a so-called sub-pixel, and thus one pixel (display pixel) as a display unit is composed of three pixels  21  of red (R), green (G) and blue (B). For this reason, the inclination of the reflector  31  can also be formed every three pixels  21  of R, G and B in such a way that the center of the optical axis is directed either to the direction of the right-hand side eye of the viewer or to the direction of the left-hand side eye of the viewer. 
         [0057]    First Disposition Example of Pixels  21  for Left-Hand Side Eye and Pixels  21  for Right-Hand Side Eye 
         [0058]      FIGS. 10A and 10B  show a first disposition example of the pixels  21  for the left-hand side eye, and the pixels  21  for the right-hand side eye. 
         [0059]      FIG. 10A  shows a disposition example in which the pixels  21  for the left-hand side eye, and the pixels  21  for the right-hand side eye are separated from each other in a transverse direction. That is to say, in the disposition example shown in  FIG. 10A , one column of the pixels  21  in a longitudinal direction is disposed so as to become either a column of the pixels  21  for the left-hand side eye or a column of the pixels  21  for the right-hand side eye. Thus, the columns of the pixels  21  for the left-hand side eye, and the columns of the pixels  21  for the right-hand side eye are alternately disposed in the transverse direction. 
         [0060]    On the other hand,  FIG. 10B  shows a disposition example in which the pixels  21  for the left-hand side eye, and the pixels  21  for the right-hand side eye are separated from each other in the longitudinal direction. That is to say, in the disposition example shown in  FIG. 10B , one column of the pixels  21  in the transverse direction is disposed so as to become either a column of the pixels  21  for the left-hand side eye or a column of the pixels  21  for the right-hand side eye. Thus, the columns of the pixels  21  for the left-hand side eye, and the columns of the pixels  21  for the right-hand side eye are alternately disposed in the longitudinal direction. 
         [0061]    In the existing lenticular screen system or parallax barrier system, the lenticular lens or the parallax barriers are formed in columns either in the longitudinal direction or in the transverse direction. For this reason, the disposition of the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye is limited to the disposition example as shown in  FIG. 10A  or  10 B in which the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye are separated from each other in columns. 
         [0062]    However, in such a disposition example, when the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye are separated from each other in the transverse direction, a horizontal resolution becomes half. On the other hand, when the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye are separated from each other in the longitudinal direction, a vertical resolution becomes half. 
         [0063]    Second Disposition Example of Pixels  21  for Left-Hand Eye and Pixels  21  for Right-Hand Eye 
         [0064]    In the display device  1 , for the purpose of solving the problem as described above, a disposition, as shown in  FIG. 11 , can be carried out in which the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye are separated from each other so as to show a checkered pattern. That is to say,  FIG. 11  shows a second disposition example of the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye in the display device  1 . 
         [0065]    In the display device  1 , the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye are disposed in the checkered pattern, whereby the three-dimensional stereoscopic image can be appreciated by the naked-eyes of the viewer without reducing the resolution of only one of the horizontal direction or the vertical direction. That is to say, it is possible to appreciate the high-definition three-dimensional stereoscopic image, by the naked-eyes of the viewer, for which the deterioration feeling of the resolution is suppressed. 
         [0066]    As described with reference to  FIG. 7 , since in the display device  1 , the conical inclination of the reflector  31  can be set every pixel  21 , the disposition having the checkered pattern as shown in  FIG. 11  can be carried out. Such a disposition is difficult to carry out in the existing lenticular screen system or parallax barrier system in which the lenticular lenses or the parallax barriers are formed in columns either in the longitudinal direction or in the transverse direction. 
         [0067]    In addition, in the existing system, for the purpose of suppressing a phenomenon called a cross-talk that each of the image for the left-hand side eye, and the image for the right-hand side eye which are to be separated from each other to be directed to the left-hand side eye and the right-hand side eye, respectively, is directed to both the left-hand side eye and the right-hand side eye, it is necessary to take the measures for reducing the aperture ratio or doubling the barrier. For this reason, as compared with the normal two-dimensional image display, it is difficult to promote the high image quality for the three-dimensional stereoscopic image display. However, according to the display device  1 , since the pixels  21  for the left-hand side eye and the pixels  21  for the right-hand side eye are disposed in the checkered pattern, thereby making it possible to suppress the deterioration feeling of the resolution, it is possible to promote the high image quality for the three-dimensional stereoscopic image display. 
         [0068]    Third Disposition Example of Pixels  21  for Left-Hand Side Eye and Pixels  21  for Right-Hand Side Eye 
         [0069]      FIGS. 12 and 13  respectively show a third disposition example and an extended case thereof of the pixels  21  for the left-hand side eye, and the pixels  21  for the right-hand side eye in the display device  1 . 
         [0070]    Some of the recent mobile phones use both the display by the longitudinally long picture, and the display by the transversely long picture as the use applications or the like by rotating the display screen. However, in each of the dispositions shown in  FIGS. 10A and 10B , and  FIG. 11 , the appreciation for the three-dimensional stereoscopic image is limited to any one of the longitudinally long picture (first direction) or the transversely long picture (a second direction vertical to the first direction). 
         [0071]    In order to cope with such a situation, in the third disposition example shown in  FIG. 12 , the pixels  21  are disposed in a matrix with each adjacent four pixels  21  in which the reflectors  31  are formed so as to give the four directions, i.e., up, down, left and right directions the directionalities of lights as one bundle. 
         [0072]    That is to say, the reflectors  31  are respectively formed on each adjacent four pixels as one bundle in such a way that the pixel  21  of “RUx,” the pixel  21  of “RBx,” the pixel  21  of “LUx,” and the pixel  21  of “LBx” are given the directionalities of the lights in the up direction, in the left direction, in the right direction, and in the down direction, respectively. In this case, when the viewer appreciates the image as the transversely long picture, the pixel  21  of “RBx,” and the pixel  21  of “LUx” function either as the pixel  21  for the right-hand side eye, or as the pixel  21  for the left-hand side eye. That is to say, the left direction of the pixel  21  of “BRx,” or the right direction of the pixel  21  of “LUx” means that the reflector  31  is formed in such a way that the center of the optical axis is directed either to the left-hand side eye or to the right-hand side eye when the viewer appreciates the image as the transversely long picture. On the other hand, when the viewer appreciates the image as the longitudinally long picture, the pixel  21  of “LBx” and the pixel  21  of “RUx” function either as the pixel  21  for the right-hand side eye, or as the pixel  21  for the left-hand side eye. That is to say, the down direction of the pixel  21  of “LBx” or the up direction of the pixel  21  of “RUx” means that the reflector  31  is formed in such a way that the center of the optical axis is directed either to the left-hand side eye or to the right-hand side eye when the viewer appreciates the image as the longitudinally long picture. 
         [0073]    In such a manner, by carrying out the third disposition example shown in  FIG. 12 , even when both the display by the longitudinally long picture, and the display by the transversely long picture are used as the use applications or the like by rotating the display screen, the three-dimensional stereoscopic image can be appreciated in both the cases. 
         [0074]      FIG. 13  shows an extended case of the third disposition example of the pixels  21  for the left-hand side eye, and the pixels  21  for the right-hand side eye, and thus shows the disposition example in which eight directions are given the directionalities of the lights, respectively. 
         [0075]    That is to say, the reflectors  31  are respectively formed on the five pixels in such a way that the pixel  21  of “RUx,” the pixel  21  of “RCx,” the pixel  21  of “RBx,” the pixel  21  of “CUx,” and the pixel  21  of “CBx” are given the directionalities of the lights in the up left direction, in the left direction, in the bottom left direction, in the up direction, and in the down direction, respectively. In addition, the reflectors  31  are respectively formed on the three pixels  21  in such a way that the pixel  21  of “LUx,” the pixel  21  of “LCx,” and the pixel  21  of “LBx” are given the directionalities of the lights in the up right direction, in the right direction, and in the bottom right direction, respectively. 
         [0076]    As a result, even in the intermediate orientation between the orientation of the display by the longitudinally long picture, and the orientation of the display by the transversely long picture, the three-dimensional stereoscopic image can be appreciated, and thus the three-dimensional stereoscopic image can be appreciated in all points of view of 360°. 
         [0077]    Here, each of the third disposition example shown in  FIG. 12 , and the extended case of the third disposition example shown in  FIG. 13 , when the picture is appreciated from all the points of view, the pixels  21  exist which are not visualized by the viewer. For example, in the third disposition example shown in  FIG. 12 , when the display device  1  carries out the display in the form of the transversely long picture, the pixel  21  of “RBx,” and the pixel  21  of “LUx” function as the pixel  21  for the right-hand side eye, or the pixel  21  for the left-hand side eye. Therefore, none of the light (image) from the pixel  21  of “LBx,” and the light (image) from the pixel  21  of “RUx” is visualized by the viewer. In this case, the display device  1  can carry out the control in such a way that no light is emitted from any of the pixels  21  each having the directionality of the light which is not visualized from the point of view of the viewer. That is to say, the display device  1  can carry out the control for switching the pixels  21  from which the lights are to be emitted in accordance with the point of view of the viewer. As a result, it is possible to suppress the unnecessary light emission, and thus it is possible to reduce the power consumption of the display device  1 . 
         [0078]    As described above, in the display device  1 , the reflector  31  is provided in the periphery of the light emission surface  41  of each of the pixels  21 , thereby separating the optical path of the image for the left-hand side image, and the optical path of the image for the right-hand side image from each other. As a result, the three-dimensional stereoscopic image can be appreciated by the naked-eyes of the viewer. 
         [0079]    In general, the provision of the reflector  31  in the periphery of the light emission surface  41  of each of the pixels  21  results in that the directionality of the light is emphasized, and thus the angle-of-field characteristics for the picture are reduced, which is a demerit in terms of the display device. However, in the display device  1 , the emphasis of the directionality of the light is further increased, and thus the reflector  31  is formed in such a way that angles at which the light from the pixels  21  for the right-hand side eye, and the light from the pixels  21  for the left-hand side eye are made incident to the right-hand side eye and the left-hand side eye, respectively, become the centers of the respective optical axes. As a result, the three-dimensional stereoscopic image can be appreciated by using the naked-eyes of the viewer. 
         [0080]    Method of Manufacturing Display Device  1   
         [0081]    An embodiment of a method of manufacturing the display device  1  includes the steps of: disposing a plurality of pixels  21  each having the self-light emitting element in a matrix; forming the reflectors  31  which are erected in peripheries of the self-light emitting elements of plurality of pixels  21 , respectively, so as to protrude along the light emission direction in such a way that the center of the optical axis of the light from the pixel is directed in the predetermined direction; and forming the inclinations of the reflectors  31  in such a way that the center of the optical axis of the light from the pixel in which the image for the left-hand side eye is displayed is directed to the left-hand side eye of the viewer, and the center of the optical axis of the light from the pixel in which the image for the right-hand side eye is displayed is directed to the right-hand side eye of the viewer. 
         [0082]    In the method of manufacturing the display device  1 , since a special film needs not to be stuck unlike the existing parallax barrier system or lenticular screen system, a loss of each of the lights emitted from the respective pixels  21  is less. In addition, since the special film needs not to be stuck, the picture alignment or the like for the film needs not to be carried out, and thus the display device  1  can be manufactured in the less number of manufacture processes and at a low cost. That is to say, according to the method of manufacturing the display device  1 , it is possible to readily manufacture the display device  1  for displaying thereon the three-dimensional stereoscopic image by using the naked-eye system. 
         [0083]    The display device  1  of the embodiment described above can be used so as to be incorporated as a display portion in various kinds of electronic apparatuses. 
         [0084]    Application Examples of Display Device  1   
         [0085]      FIG. 14  is a perspective view of a television receiver  101  as a concrete example of the electronic apparatus having the display device  1  incorporated therein. 
         [0086]    A display screen  107  composed of a front panel  103 , a filter glass  105 , and the like is disposed in the television receiver  101  shown in  FIG. 14 . A portion of the display screen  107  can be composed of the display device  1 . 
         [0087]      FIGS. 15A and 15B  are respectively perspective views each showing a digital camera  111  as another concrete example of the electronic apparatus having the display device  1  incorporated therein. Here,  FIG. 15A  is the perspective view of the digital camera  111  when viewed from a front side, and  FIG. 15B  is the perspective view of the digital camera  111  when viewed from a back side. 
         [0088]    The digital camera  111  shown in  FIGS. 15A and 15B  is composed of a protective cover  113 , an image capturing lens portion  115 , a display screen  117 , a control switch  119 , and a shutter button  121 . Of these constituent elements, a portion of the display screen  117  can be composed of the display device  1 . 
         [0089]      FIG. 16  is a perspective view showing a construction of an exterior appearance of a video camera  131  as still another concrete example of the electronic apparatus having the display device  1  incorporated therein. 
         [0090]    The video camera  131  is composed of an image capturing lens  135  which is provided on a front surface of a main body  133 , and which serves to capture an image of a subject, a start/stop switch  117  with which the image capturing operation is started/stopped, and a display screen  139 . Of these constituent elements, a portion of the display screen  139  can be composed of the display device  1 . 
         [0091]      FIGS. 17A and 17B  are respectively front views each showing a construction of an exterior appearance of a mobile phone  101  as yet another concrete example of the electronic apparatus having the display device  1  incorporated therein. 
         [0092]    The mobile phone  141  is of a folded type. Thus,  FIG. 17A  shows the exterior appearance of the mobile phone  141  in a state in which chassis are opened, and  FIG. 17B  shows the exterior appearance of the mobile phone  141  in a state in which the chassis are closed. 
         [0093]    The mobile phone  141  is composed of an upper chassis  143 , a lower chassis  145 , a connection portion (a hinge portion in this example)  147 , a display screen  149 , a subsidiary display screen  151 , a picture light  153 , and an image capturing lens  155 . Of these constituent elements, a portion of each of the display screen  149  and the subsidiary display screen  151  can be composed of the display device  1 . 
         [0094]      FIG. 18  is a perspective view showing an exterior appearance of a notebook-size personal computer  161  as a further concrete example of the electronic apparatus having the display device  1  incorporated therein. 
         [0095]    The notebook-size personal computer  161  is composed of a lower chassis  163 , an upper chassis  165 , a keyboard  167 , and a display screen  169 . Of these constituent elements, a portion of the display screen  169  can be composed of the display device  1 . 
         [0096]    It should be understood that various changes and modifications to the presently preferred embodiments described herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present subject matter and without diminishing its intended advantages. It is therefore intended that such changes and modifications be covered by the appended claims.