JP2012155182A - Naked eye three-dimensional video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transmit information other than a three-dimensional video to an observer with a high advertising effect even when the three-dimensional video is presented.SOLUTION: A naked eye three-dimensional video display device 100 comprises: a parallax barrier 110, on which a plurality of slits 110a extended in a vertical direction is disposed in parallel in a horizontal direction; a plurality of display regions 112a that is disposed at a rear surface side of the parallax barrier 110 and corresponds to the plurality of slits 110a; a display 112 having light shielding regions 112b that are disposed among the display regions 112a and suppress a transmission of light; and a display controller 120 for individually displaying a video for a left eye and a video for a right eye having horizontal parallaxes in the display regions 112a of the display 112, which an observer 102 can visually identify with his or her left eye and right eye, respectively, when the observer 102 observes the display 112 through the plurality of slits 110a. The light shielding regions 112b is further provided with a plurality of partial regions having different light transmittance density or a different light transmittance from one another.

Description

  The present invention relates to a naked-eye stereoscopic image display apparatus that allows an observer to perceive a stereoscopic image with the naked eye without using special glasses.

  2. Description of the Related Art In recent years, stereoscopic video display devices that display two videos having horizontal parallax on a display unit (monitor) and make an observer perceive as if they exist stereoscopically have attracted attention. Among stereoscopic video display devices, for example, a parallax barrier type autostereoscopic video display device in which a parallax barrier is arranged in front of the display unit, or a lenticular lens type autostereoscopic video in which a lenticular lens is arranged in front of the display unit In the display device, an observer can perceive a stereoscopic image with the naked eye without using special glasses such as polarized glasses or electronic shutter glasses.

  For example, in a parallax barrier type autostereoscopic image display device, images that can be viewed with the left and right eyes of an observer are made different through slits provided in the parallax barrier, and two images having horizontal parallax are respectively displayed on the left and right eyes of the observer. 3D images can be perceived by viewing them independently.

  Such an autostereoscopic image display apparatus can dynamically and impressively present a stereoscopic image, and is therefore suitable for signage (signage) applications. However, in the parallax barrier type autostereoscopic image display device, the observer can only view the monotonous parallax barrier in the foreground while nothing is displayed on the display unit, so the effectiveness as an advertisement is reduced. Therefore, a technique has been disclosed in which, while the display unit is not operated, a still image applied to the front surface of the parallax barrier is projected so that the observer can observe the still image as an advertisement separate from the stereoscopic image. (For example, Patent Document 1).

JP 2010-26014 A

  However, the technique of Patent Document 1 does not present a stereoscopic video to the last, that is, a technique during which the autostereoscopic video display device does not perform the intended operation and presents a stereoscopic video. Since the stereoscopic image is preferentially viewed by an observer, the effect as an advertisement is low.

  Therefore, in view of such a problem, the present invention provides a naked-eye stereoscopic video display device capable of transmitting information other than a stereoscopic video to an observer with a high advertising effect even when a stereoscopic video is presented. The purpose is to provide.

  In order to solve the above problems, an autostereoscopic image display device according to the present invention includes a parallax barrier in which a plurality of slits extending in the vertical direction are arranged in parallel in the horizontal direction, and a slit on the back side of the parallax barrier. When the observer observes the display part through the plurality of slits, the display part having a plurality of display areas corresponding to the display area, a light-shielding area disposed between the display areas to suppress light transmission, and the left and right eyes of the observer A display control unit that displays a left-eye image and a right-eye image each having a horizontal parallax in a display region of the display unit that can be visually recognized, and the light-shielding region further includes a light transmission density or transmittance A plurality of partial regions having different values are provided.

  In order to solve the above-described problems, another autostereoscopic image display device according to the present invention includes a lenticular lens in which a plurality of convex lenses having a horizontal section extending in the vertical direction are arranged in parallel in the horizontal direction, and the back side of the lenticular lens. When the observer observes the display unit through the plurality of lenses, the display unit includes a plurality of display regions corresponding to the lenses, a display unit disposed between the display regions and a light-blocking region that suppresses light transmission. A display control unit that displays a left-eye image and a right-eye image each having a horizontal parallax in a display region of the display unit that can be visually recognized by each of the left and right eyes of the person. A plurality of partial regions having different transmission densities or transmittances are provided.

  The light transmission density of the partial region may be determined by an area ratio between a plurality of holes provided in the light shielding region and a portion that is not a hole.

  The plurality of partial areas may form a significant image in the entire light shielding area.

  According to the autostereoscopic image display device of the present invention, even when a stereoscopic image is presented, information other than the stereoscopic image can be transmitted to the observer with a high advertising effect.

It is explanatory drawing by the top view for demonstrating the structure of a parallax barrier type autostereoscopic image display apparatus. It is explanatory drawing for demonstrating the function of the light-shielding area | region of a parallax barrier system. It is explanatory drawing which showed the light-shielding image of the whole light-shielding area | region. It is explanatory drawing which showed the specific structure of the light-shielding area | region. It is explanatory drawing for demonstrating the actual appearance of the image given to the light-shielding area | region. It is explanatory drawing for demonstrating the actual appearance of the image given to the light-shielding area | region. It is explanatory drawing by the top view for demonstrating the structure of the autostereoscopic image display apparatus of a lenticular lens system.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  Although the stereoscopic image display device is different in its method, the two images having the horizontal parallax (the image for the left eye and the image for the right eye) are visually recognized by only one of the left and right eyes of the observer. This is common in that it performs a process of perceiving three-dimensionally. In the present embodiment, an autostereoscopic video display device such as a parallax barrier method or a lenticular lens method that allows an observer to perceive a stereoscopic image with the naked eye is used, and a light shielding region provided in the display unit of the autostereoscopic video display device is used. Thus, arbitrary information is transmitted to the observer.

(Parallax barrier type autostereoscopic image display device 100)
FIG. 1 is an explanatory view in a top view for explaining the configuration of a parallax barrier type autostereoscopic image display device 100. As shown in FIG. 1, the autostereoscopic image display device 100 includes a parallax barrier 110, a display unit 112, a backlight 114, and a central control unit 116.

  The parallax barrier 110 is composed of a light-shielded flat plate, and a plurality of slits (openings) 110a extending in the vertical direction are arranged in parallel on the flat plate. The slit 110a is formed such that a right-eye image and a left-eye image having a horizontal parallax can be separated and presented according to the interocular distance between the left eye 102a and the right eye 102b of the observer 102. Yes.

  The display unit 112 is provided on the back side of the parallax barrier 110 when viewed from the observer 102, and is composed of two transparent glasses opposed in parallel and liquid crystal sealed in the two transparent glasses. ), Green (G), and blue (B) light transmitting liquid crystal displays and the like, and displays a right eye image and a left eye image having horizontal parallax.

  Based on a control signal from the display control unit 120 described later, the display unit 112 displays a left-eye image and a right-eye image in a display area 112a where a straight line connecting the left and right eyes of the observer 102 and the slit 110a intersects the display unit 112. Are displayed simultaneously. Therefore, the display area 112a has a size corresponding to the slit 110a. The display unit 112 includes a plurality of display areas 112a corresponding to the slits 110a, and a light shielding area 112b that is disposed between the display areas 112a and suppresses light transmission. The reason for requiring the light shielding region 112b will be described in detail later.

  The backlight 114 is composed of a light source such as a light emitting diode (LED) or a cold cathode fluorescent lamp (CCFL), and is displayed from the back side of the display unit 112 when viewed from the observer 102. Light is irradiated toward the unit 112. Note that the backlight 114 can be omitted by using a self-luminous display device such as an organic EL (Electro Luminescence) as the display unit 112.

  The central control unit 116 manages and controls the entire autostereoscopic image display device 100 by a semiconductor integrated circuit including a central processing unit (CPU), a ROM storing programs, a RAM as a work area, and the like. In the present embodiment, the central control unit 116 also functions as the display control unit 120.

  The display control unit 120 displays a straight line connecting the left eye of the observer 102 (more precisely, a position corresponding to the left eye when it is assumed that the observer 102 is present at a predetermined position) and the slit 110a. The left eye image (indicated by “L” in FIG. 1) is displayed in the display area 112a on the intersecting display unit 112, and the right eye of the observer 102 (precisely, the observer 102 is assumed to exist at a predetermined position). (A position corresponding to the right eye in this case) 102b and a straight line connecting the slit 110a of the transmission unit 110 intersects with the display unit 112 in the display area 112a on the display unit 112 (shown as “R” in FIG. 1). .) Is displayed.

  Thus, when the observer 102 observes the autostereoscopic image display device 100 from the predetermined position described above, the left eye 102a displays the left-eye image through the plurality of slits 110a as shown in gray in FIG. Since the right eye image is visually recognized by the right eye 102b, a stereoscopic image based on both images can be perceived. Here, as described above, the light shielding area 112b is provided between the display areas 112a for displaying the left-eye video and the right-eye video. Hereinafter, the reason why the light shielding region 112b is provided will be described.

  FIG. 2 is an explanatory diagram for explaining the function of the light shielding region 112b. Even if the display unit 112 does not have the light-shielding region 112b, the observer 102 uses the left eye 102a to display the left-eye image (see “in FIG. 2”) at the predetermined position shown in FIG. L ”), and the right eye 102b visually recognizes the right eye image (indicated by“ R ”in FIG. 2). Therefore, the observer 102 can correctly perceive a stereoscopic image because the left eye image and the right eye image are accurately captured by the left and right eyes 102a and 102b, respectively.

  However, as shown in FIG. 2B, when the observer 102 moves upward in FIG. 2B and deviates from a predetermined position, the regions visually recognized by the left eye 102a and the right eye 102b are displayed in two. As shown in the enlarged view of FIG. 2B, the left eye video is mixed in the right eye 102b, and the right eye video is mixed in the left eye 102a. End up.

  Therefore, as shown in FIG. 2C, the above-described light-shielding region 112b is provided between the display regions 112a in the display unit 112, and the width of the slit 110a of the parallax barrier 110 is also reduced by the amount that the display region 112a is narrowed by the light-shielding region 112b. Narrow. In this way, even if the observer 102 observes the autostereoscopic image display device 100 from the same position as in FIG. 2B, other images are displayed on the left and right eyes 102a and 102b as shown in the enlarged view of FIG. The observer 102 can accurately perceive the left-eye video and the right-eye video with each of the left and right eyes 102a and 102b, and can correctly perceive the stereoscopic video. In addition to reducing crosstalk, the light shielding region 112b also plays a role of preventing light leakage during black display and color mixing between adjacent coloring materials.

  Such a light shielding region 112b is also referred to as a black matrix layer, and is also used for a television or the like. In televisions and the like, it is desirable that the light-shielding region has a narrow width in order to ensure screen brightness. For example, when the autostereoscopic image display device 100 is used as a signage, the above-described reduction in crosstalk and black display are possible. In order to prevent light leakage and color mixing between adjacent colorants, in addition to widening the field of view, the width of the light shielding region 112b is often wide.

  Since such a light shielding area 112b is provided to reduce crosstalk, the observer 102 visually recognizes the light shielding area 112b with a high probability instead of the adjacent display area 112a that should be observed. It will be. In the present embodiment, information other than the stereoscopic video is presented to the observer 102 using the light shielding area 112b that is inevitably visible.

  For example, the light shielding region 112b is basically formed by etching a metal plate member, and may be applied in black with carbon or the like. The light blocking region 112b of the present embodiment does not simply block light, but has a plurality of partial regions with different light transmission densities or transmittances. A plurality of partial regions having different light transmission densities or transmittances can form a significant image in the entire light shielding region 112b.

  FIG. 3 is an explanatory diagram showing a light shielding image of the entire light shielding region 112b. As described above, the light blocking area 112b is represented by the black partial area 150 where light is blocked. As shown in FIG. 3, the light blocking area 112b transmits light that does not affect the perception of a stereoscopic image, and corresponds to dark gray. A partial region 152 is also provided. Depending on the position of the observer 102, not only the left-eye video and the right-eye video but also such a light-shielding region 112b is observed, so that the display unit 112 is operated (a stereoscopic video is presented). Even in such a case, it is possible to transmit information other than the stereoscopic video (for example, a company logo, a mark, or a pattern), here, the character “ABC” to the observer 102 with a high advertising effect.

  At this time, the light transmission density of each partial region may be determined by an area ratio between a plurality of holes provided in the plate member that is the light shielding region 112b and a portion (light shielding portion) that is not a hole.

  FIG. 4 is an explanatory diagram showing a specific configuration of the light shielding region 112b. For example, in FIG. 4, when the plate member is etched to transmit light in the portion that becomes the display region 112a of the display unit 112, the black partial region among the portions that remain as the light shielding region 112b as shown in FIG. No processing is performed at 150, and innumerable fine holes 154 are formed at the partial region 152 corresponding to dark gray to form a pattern like a stipple. The light transmission density can be varied depending on the density of the plurality of holes 154 and the size of the holes 154 provided in the plate member, that is, the area ratio of the holes 154, and the interval and size of the holes 154 change little by little. It is also possible to form gradations.

  Further, not only the light transmission density but also the transmittance of the plate member itself can be varied to form a significant image in the light shielding region 112b.

  For example, when only black is displayed in the display area 112a due to the structure that transmits light, light leakage may occur. However, signage is displayed on the premise that a high-intensity image is provided in the first place. There is no problem because it is not supposed to be.

  5 and 6 are explanatory diagrams for explaining the actual appearance of the image applied to the light shielding region 112b. As shown in FIG. 5A, when the observer 102 accurately captures the left-eye image L with the left eye 102a and the right-eye image R with the right eye 102b, the observer 102 captures the light shielding area 112b. The original stereoscopic video shown in FIG. 6A can be perceived without observing. As described above, when the observer 102 is at the original position, a significant image according to the present embodiment is hardly visually recognized.

  When slightly shifted from the position, as shown in FIG. 5B, the area for visually recognizing the light-shielding area 112b increases according to the displacement, the luminance of the stereoscopic image decreases, and the contribution of the image applied to the light-shielding area 112b is reduced. To rise. In this way, the observer 102 visually recognizes the image applied to the light shielding region 112b so as to be superimposed on the stereoscopic video, as shown in FIG. 6B.

  Further, when the observer 102 continues to move, the visible light shielding area 112b also increases, and the contribution of the image applied to the light shielding area 112b increases. Then, as shown in FIG. 5C, when the display area 112a adjacent to the originally visible display area 112a is observed from the slit 110a, crosstalk occurs in the stereoscopic video as shown in FIG. 6C. As a result, the left eye 102a visually recognizes the image for the right eye and the right eye 102b visually recognizes the image for the left eye, so that the stereoscopic image is not effectively formed. Then, the image “ABC” fixed to the light shielding area 112b is relatively easily recognized by the observer 102, and a higher advertising effect is generated.

  In particular, in the signage application, the observer 102 often views the autostereoscopic image display device 100 while moving in front of the autostereoscopic image display device 100, and therefore, as shown in FIGS. 6B and 6C. There are many opportunities to look as shown, and even when the display unit 112 is operated, it is possible to transmit images other than stereoscopic images to the observer 102 with a very high advertising effect. .

  Further, the image transmitted to the observer 102 in the present embodiment can be confirmed evenly by changing the light transmission density and the light transmittance so as not to affect the perception of the original stereoscopic image. Therefore, the observer 102 can visually recognize a stereoscopic image without being conscious of the image, and further, although it is thin, the fixed image remains in the deep consciousness of the observer 102 and is used as a signage purpose. It is possible to achieve a higher advertising effect according to the above.

  In particular, the light-shielding region 112b used for signage is particularly effective since the width is originally set to be wide as described above.

(Lenticular lens type autostereoscopic image display device 200)
Further, the light shielding region 112b of the present embodiment is applicable not only to the light shielding region 112b in the parallax barrier type autostereoscopic image display device 100 but also to the light shielding region 112b of the lenticular lens type autostereoscopic image display device 200.

  FIG. 7 is an explanatory diagram in a top view for explaining the configuration of the lenticular lens-type autostereoscopic image display device 200. As shown in FIG. 7, the autostereoscopic image display device 200 includes a lenticular lens 210, a display unit 112, a backlight 114, and a central control unit 116.

  The lenticular lens 210 is formed by arranging a plurality of lenses 210a having a convex shape in a horizontal section extending in the vertical direction in the horizontal direction. The display unit 112 is provided on the back side of the lenticular lens 210 and includes a plurality of display areas 112a corresponding to the lenses 210a and a light shielding area 112b arranged between the display areas 112a to suppress light transmission. When the observer 102 observes the display unit 112 through the plurality of lenses 210a, the display control unit 120 displays the left-eye video image on the display area 112a of the display unit 112 that can be visually recognized by the left and right eyes 102a and 102b of the observer 102. The right eye image is displayed.

  The light shielding region 112b is provided with a plurality of partial regions 150 having different light transmission densities or transmittances as in the parallax barrier type naked-eye stereoscopic image display device 100. Even when the video is presented, information other than the stereoscopic video can be transmitted to the observer 102 with a high advertising effect. The constituent elements other than the lenticular lens 210 already described as the constituent elements in the parallax barrier type autostereoscopic image display apparatus 100 have substantially the same functions, and thus a duplicate description is omitted. Needless to say, the same effects as the autostereoscopic image display device 100 can be obtained.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Is done.

  For example, in the above-described embodiment, the light shielding region 112b is formed of a metal plate member. However, the present invention is not limited thereto, and a black band may be provided as an image on the liquid crystal display as the display unit 112.

  The present invention can be used for an autostereoscopic image display apparatus that allows an observer to perceive a stereoscopic image with the naked eye without using special glasses.

100, 200 ... Autostereoscopic image display device 102 ... Observer 102a ... Left eye 102b ... Right eye 110 ... Parallax barrier 110a ... Slit 112 ... Display unit 112a ... Display region 112b ... Shading region 120 ... Display control unit 150 ... Partial region 154 ... hole 210 ... lenticular lens 210a ... lens

Claims (4)

A parallax barrier in which a plurality of slits extended in the vertical direction are arranged in parallel in the horizontal direction;
A display unit provided on the back side of the parallax barrier, and having a plurality of display areas corresponding to the slits, and a light-shielding area arranged between the display areas to suppress light transmission;
When an observer observes the display unit through the plurality of slits, a left-eye image and a right-eye image having a horizontal parallax are displayed in the display area of the display unit that can be visually recognized by the left and right eyes of the observer. A display control unit to display each;
With
The autostereoscopic image display device, wherein the light shielding region is further provided with a plurality of partial regions having different light transmission densities or transmittances. A lenticular lens in which a plurality of convex lenses having a horizontal section extending in the vertical direction are arranged in parallel in the horizontal direction;
A display unit provided on the back side of the lenticular lens, and having a plurality of display areas corresponding to the lenses, and a light-shielding area arranged between the display areas to suppress light transmission;
When an observer observes the display unit through the plurality of lenses, a left-eye image and a right-eye image having a horizontal parallax are displayed in the display area of the display unit that can be visually recognized by the left and right eyes of the observer. A display control unit to display each;
With
The autostereoscopic image display device, wherein the light shielding region is further provided with a plurality of partial regions having different light transmission densities or transmittances.   The autostereoscopic image according to claim 1 or 2, wherein the light transmission density of the partial region is determined by an area ratio of a plurality of holes provided in the light shielding region and a portion that is not the hole. Display device.   The autostereoscopic image display device according to claim 1, wherein the plurality of partial areas form a significant image in the entire light shielding area.

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