JP2011145351A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device that displays an image having stereoscopic effects for a viewing person. <P>SOLUTION: The display device includes a first display part for displaying a first image; a second display part arranged nearer to the viewer side than the first display part and transmitting the light of the first image and displaying a second image; and a lens arranged between the first display part and the second display part and providing a virtual image of the first image for the viewer. The lens forms the virtual image of the first image at a position separated farther away from the viewer than the first display part. The second display part displays a frame image showing an outer frame of a display screen at the peripheral area of the display screen. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device.

  As a technique for visually recognizing a stereoscopic (3D) image with the naked eye without using special glasses, a technique using a parallax barrier or a lenticular lens in front of the display surface is known. In addition, as a technique for visually recognizing a stereoscopic image using a transmissive display monitor and a lens, light from the right eye light source and left light are irradiated from the back side of the transmissive display monitor with a right eye light source and a left eye light source. A technique is known in which light from an ophthalmic light source is imaged on a right eye and a left eye of a viewer by a lens, respectively. For example, the following patent documents describe techniques related to stereoscopic viewing.

JP-A-7-287195 JP 2009-98589 A

  By the way, depending on the position of the viewer with respect to the screen, for example, when the viewer views the display monitor from an oblique direction, the light to be given only to the right eye leaks to the left eye, or only the left eye The light that should be given to the eye may leak to the right eye. In such a case, a so-called appropriate parallax cannot be given to the viewer. For this reason, the viewer may not be able to three-dimensionally recognize the image displayed on the screen.

  In order to solve the above-described problem, according to one aspect of the present invention, there is provided a display device, the first display unit that displays a first image, the viewer arranged on the viewer side from the first display unit, A second display unit that transmits one image of light and displays a second image; and is disposed between the first display unit and the second display unit, and is a virtual image of the first image for a viewer And a lens for providing

  The lens may form a virtual image of the first image at a position away from the viewer from the first display unit. The second display unit may display a frame image representing an outer frame of the display screen in a peripheral area of the display screen. The second display unit may display, as the second image, a right-eye image that should be visually recognized by the viewer's right eye and a left-eye image that should be visually recognized by the viewer's left eye. .

  The image processing apparatus further includes a first image generation unit that generates a right-eye image and a left-eye image obtained by shifting a two-dimensional image to the left and right on the display screen, and the second display unit includes a right image generated by the first image generation unit. An image for the eye and an image for the left eye may be displayed. A right end processing unit for adding a right end image displayed within a predetermined range from the right end of the display screen to the right side of the left eye image generated by the first image generation unit, and the first image generation unit A left end processing unit for adding a left end image displayed within a predetermined range from the left end of the display screen is further provided on the left side of the left eye image, and the second display unit has the right end image added thereto. The right eye image to which the left eye image and the left end image are added may be displayed.

  The first display unit may display, as the first image, a right-eye image that should be visually recognized by the viewer's right eye and a left-eye image that should be visually recognized by the viewer's left eye. A second image generation unit configured to generate a right-eye image and a left-eye image obtained by shifting a two-dimensional image to the left or right on the display screen; and the first display unit generates a right eye generated by the second image generation unit An image for use and an image for the left eye may be displayed.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

3 is a diagram illustrating a configuration example of a display device 10. FIG. It is a figure which shows an example of the screen 200 seen from the viewer. It is a figure which shows an example of the production | generation method of the image for right eyes, and the image for left eyes. It is a figure which shows an example of the image which the 1st image generation part 110 produces | generates. It is a figure which shows the other structural example of the display part.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

  FIG. 1 schematically shows a configuration example of a display device 10 according to the present embodiment, together with the right eye and left eye of a viewer. The display device 10 presents a stereoscopic image to the viewer. Specifically, the display device 10 provides a stereoscopic image to a viewer positioned in the direction in which the plurality of display units are arranged by using a plurality of display units provided in parallel.

  The display device 10 includes a display unit 140 having a first display unit 141, a second display unit 142, and a lens 145, an image acquisition unit 100, a first image generation unit 110, a second image generation unit 120, a right end processing unit 112, and The left end processing unit 114 is provided. Here, it is assumed that the first image generation unit 110, the left end processing unit 114, and the right end processing unit 112 are functional blocks included in the first display control unit 105 that controls display by the second display unit 142.

  The first display unit 141 displays the first image. The second display unit 142 is disposed closer to the viewer than the first display unit 141, transmits the light of the first image, and displays the second image. As an example, the second display unit 142 displays an image by light emission and is formed by a plurality of light-emitting elements having optical transparency. For example, the second display portion 142 can be formed by a plurality of organic EL elements as light-transmitting pixel elements that do not substantially absorb light and a transparent electrode that drives the plurality of organic EL elements.

  Between the 1st display part 141 and the 2nd display part 142, the lens 145 which provides the virtual image of a 1st image with respect to a viewer is arrange | positioned. Specifically, the lens 145 forms a virtual image of the first image at a position away from the viewer from the first display unit 141. Due to the presence of the lens 145, it appears to the eyes of the viewer that the first image displayed at the position of the first display unit 141 is present at, for example, the position 190.

  Here, the second display unit 142 displays a frame image representing the outer frame of the display screen in the peripheral area of the display screen. For example, the second display unit 142 displays a frame image such as black on the right end portion and the left end portion. In this case, the second display unit 142 does not display an image in an area other than the frame image. That is, the area other than the frame image in the second display unit 142 simply transmits the light from the first display unit 141. The area in which the frame image is displayed is shown as a hatched portion in FIG.

  Thereby, the viewer can feel a three-dimensional feeling about the image of the area within the frame. By displaying a frame image on the second display unit 142 and presenting the first image of the first display unit 141 to the viewer in the frame image, an object passes through the frame (for example, a window frame, a magnifying glass frame, etc.). It is possible to give the viewer a feeling like watching. Thereby, a natural stereoscopic effect can be provided to the viewer.

  The first display unit 141 may display a so-called two-dimensional image. In addition, a two-dimensional image may be displayed in the inner area of the frame image of the second display unit 142. In addition, as described below, at least one of the first display unit 141 and the second display unit 142 may display a stereoscopic image that is stereoscopically viewed by the viewer.

  Specifically, the second display unit 142 displays, as the second image, an image for the right eye that should be viewed with the right eye of the viewer and an image for the left eye that should be viewed with the left eye of the viewer. To do. Specifically, the first image generation unit 110 generates a right-eye image and a left-eye image obtained by shifting a two-dimensional image left and right on the display screen. The second display unit 142 displays the right eye image and the left eye image generated by the first image generation unit 110.

  The image that is the basis of the image displayed on the second display unit 142 is acquired by the image acquisition unit 100. The image acquisition unit 100 acquires one image from the outside, and generates a right-eye image and a left-eye image from the acquired image. The image acquisition unit 100 acquires an image captured from an imaging device that captures a so-called two-dimensional image and supplies the acquired image to the first image generation unit 110. The first image generation unit 110 generates a right eye image and a left eye image from the two-dimensional image. In addition, the image acquisition unit 100 may acquire three-dimensional data representing at least the shape of a three-dimensional object. The first image generation unit 110 generates a right-eye image and a left-eye image obtained by viewing a virtual three-dimensional object from a viewpoint corresponding to the right eye and a viewpoint corresponding to the left eye from the supplied three-dimensional data. It may be generated by computer graphics or the like.

  Here, the right end processing unit 112 adds a right end image displayed within a predetermined range from the right end of the display screen to the right side of the image for the left eye generated by the first image generation unit 110. The left end processing unit 114 adds a left end image displayed within a predetermined range from the left end of the display screen to the left side of the left eye image generated by the first image generation unit 110. Then, the second display unit 142 displays the left eye image to which the right end image is added and the right eye image to which the left end image is added. Thereby, the right-eye image and the left-eye image to which the frame image is added can be presented to the viewer.

  Note that the second image generation unit 120 may generate a first image displayed on the first display unit 141 and supply the first image to the first display unit 141. The first image displayed by the first display unit 141 may also be a stereoscopic image. Specifically, the first display unit 141 displays, as the first image, an image for the right eye that should be viewed with the right eye of the viewer and an image for the left eye that should be viewed with the left eye of the viewer. To do. Specifically, the second image generation unit 120 generates a right-eye image and a left-eye image in which a two-dimensional image is shifted left and right on the display screen. The first display unit 141 displays the right eye image and the left eye image generated by the second image generation unit 120.

  The first image generation unit 110 can generate the right-eye image and the left-eye image displayed on the first display unit 141 by the same generation method as the second image as a stereoscopic image. In the following description, the right eye image and the left eye image displayed on the first display unit 141 and the second display unit 142 may be collectively referred to as a right eye image and a left eye image.

  Here, the right eye image is presented to the viewer's right eye, and the left eye image is presented to the viewer's left eye. Specifically, a parallax barrier method, a lenticular lens method, or the like can be exemplified as the display method of the right eye image and the left eye image by the second display unit 142. Thus, the right-eye image and the left-eye image are directed to the viewer's right eye and left eye.

  As described above, according to the display device 10, a stereoscopic image can be presented to a naked eye viewer who does not wear dedicated glasses for image separation. In particular, displaying a frame image on the second display unit 142 can provide a natural stereoscopic effect to the viewer. Further, by displaying such a frame image, it may be possible for the viewer to promote the fusion of the right eye image and the left eye image.

  FIG. 2 shows an example of the screen 200 viewed from the viewer. At the right end of the screen 200, the right frame image 210 added by the right end processing unit 112 is presented to the viewer. At the left end of the screen 200, the left frame image 220 added by the left end processing unit 114 is presented to the viewer. Here, the object 230 is an object displayed on the first display unit 141, and the virtual image is presented to the viewer. Furthermore, the presence of the right frame image and the left frame image makes the viewer feel as if he / she sees the object 230 through the window frame, so that the object 230 can be recognized with a natural stereoscopic effect.

  Further, the second display unit 142 displays the object 240 between the right frame image 210 and the left frame image 220. Here, the object 240 may be a stereoscopic image that is recognized slightly farther than the second display unit 142 by the viewer. Since the viewer 240 recognizes that the object 240 exists just outside the window frame, the viewer can feel a stronger sense of depth in the image provided through the screen 200.

  In the display example of this figure, the second display unit 142 displays the frame image and the object 240. However, the second display unit 142 does not display the frame image and is closer to the viewer than the position of the second display unit 142. A recognized stereoscopic image may be displayed. The first image generation unit 110 views a stereoscopic image recognized by the viewer from the position of the second display unit 142 by giving a negative shift amount between the right-eye image and the left-eye image. Can be presented to the viewer.

  Further, in the display example of this figure, the second display unit 142 displays a frame image in a region along the right side and the left side of the screen 200. In addition, the second display unit 142 may display a frame image in an area along at least one of the upper side, the lower side, the right side, and the left side of the screen 200. For example, the second display unit 142 displays a frame image in an area along the upper side, the lower side, the right side, and the left side of the screen 200. In addition, the second display unit 142 does not display the frame image in the region along the right side and the region on the left side of the display screen, and displays the frame in the region along the upper side and the region along the lower side of the screen 200. An image may be displayed.

  FIG. 3 shows an example of a method for generating a right eye image and a left eye image. Here, the case where the second image generation unit 120 generates the left eye image 310 and the right eye image 320 from the image 300 will be described as an example.

  The second image generation unit 120 generates the right-eye image 320 and the left-eye image 310 by shifting one image 300 left and right. Accordingly, the second image generation unit 120 can generate the right-eye image 320 and the left-eye image 310 for stereoscopic viewing from a two-dimensional image that has not been generated for stereoscopic viewing by simple processing.

  More specifically, the second image generation unit 120 generates the right eye image 320 by horizontally shifting the image 300 to the right side, and horizontally shifts the image 300 to the left side to generate the left eye image 310. Generate. In this case, the second image generation unit 120 sets the difference in the relative position between the left eye image 310 and the right eye image 320 in the horizontal direction to be equal to or less than the inter-pupil distance L of the viewer. For example, the second image generation unit 120 sets an image obtained by shifting the image 300 to the left by L / 2 as an image for left eye 310, and an image obtained by shifting the common image by L / 2 to the right as an image for right eye 320. To do.

  Here, the interpupillary distance L may be a distance (40 mm to 90 mm) between the pupils of the viewer. The interpupillary distance may be a value predetermined in the second image generation unit 120, and information indicating the interpupillary distance input from the viewer may be provided to the second image generation unit 120. The left eye image and the right eye image are displayed at positions separated by the interpupillary distance L, and the left eye image presented to the viewer's left eye and the right eye presented to the viewer's right eye When the viewer merges the image for use and recognizes it as a single image, the viewer recognizes the fused image as being located at infinity. Accordingly, the second image generation unit 120 generates the right-eye image and the left-eye image by setting the difference between the relative positions of the right-eye image and the left-eye image to be equal to or less than the inter-pupil distance L, thereby generating the display device 10. Can present a stereoscopic image to the viewer.

  Further, when the right image and the left eye image are generated by shifting the common image to the left and right, a blank portion is generated at the left end of the right eye image. Similarly, a blank portion is also generated at the right end of the left eye image. Since these regions can give an image to only one of the right eye and the left eye, there are cases where it becomes an obstacle to giving a natural stereoscopic effect to the viewer.

  Therefore, as an example, the second image generation unit 120 generates a right end image by copying the right end region image of the right eye image, and generates a left end image by copying the image of the left end region of the left eye image. To do. In this case, the second image generation unit 120 may blur the right end image and the left end image. Thereby, the 2nd image generation part 120 can show the same image to a right eye and a left eye in an edge part, and can reduce the unnaturalness which a viewer senses in an edge part.

  In addition, as an example, the second image generation unit 120 generates a left end image by expanding a predetermined range from the left end of the right eye image display area to the left side, and also generates a predetermined range from the right end of the left eye image display area. Is enlarged to the right to generate a right end image. Thereby, the 2nd image generation part 120 can show a viewer the natural three-dimensional image with which the image continued in the edge part.

  Heretofore, an example of the method for generating the right eye image and the left eye image in the second image generation unit 120 has been described. Similarly, the first image generation unit 110 can generate a right-eye image and a left-eye image.

  An example of a method for generating a stereoscopic image that is felt farther from the first display unit 141 by giving a positive shift amount between the right-eye image and the left-eye image has been described with reference to FIG. . As described with reference to FIG. 2, when an image that is felt on the viewer side from the position of the second display unit 142 is presented to the viewer, the right-eye image displayed on the second display unit 142. And a left-eye image may have a negative shift amount. Specifically, the image for left eye is generated by shifting the given image horizontally to the right side, and the image for right eye is produced by shifting the given image horizontally to the left side. The second display unit 142 displays a right-eye image and a left-eye image having a negative shift amount, so that a stereoscopic image that appears to be positioned closer to the viewer than the second display unit 142 is viewed. Can be presented to the person.

  FIG. 4 shows an example of an image 400 generated by the first image generation unit 110. As described with reference to FIG. 3, when the object 240 is displayed on the second display unit 142 and the image is displayed in the entire area of the first display unit 141, the display contents of the object 240 and the first display unit 141 are displayed. Overlaps and enters the eyes of the viewer.

  Therefore, the first display unit 141 does not display an image in the region 440 on the first display unit 141 corresponding to the region of the object 240. For example, the first display unit 141 substantially restricts light emission from the pixel elements in the region. For example, the first display unit 141 substantially reduces the amount of light emitted from the pixel elements in the region to zero. As an example, the first image generation unit 110 generates a first image whose pixel value is substantially 0 in the region. More specifically, the first image generation unit 110 generates a first image having a pixel value of 0 in the region. Thereby, only the light that substantially describes the object 240 can be incident on the eyes of the viewer.

  FIG. 5 shows another configuration example of the display unit 140. The display unit 140 according to this example includes members having substantially the same configuration and function as those already described. In the display unit 140 according to this example, members having substantially the same configuration and function as those already described are denoted by the same reference numerals, and description thereof is omitted except for differences. The display unit 140 according to this example further includes a light limiting unit 143 in addition to the first display unit 141, the lens 145, and the second display unit 142.

  The light restriction unit 143 restricts transmission of light from the first display unit 141 to a region where the second display unit 142 displays an image in accordance with control from the first display control unit 105. Specifically, the light limiting unit 143 blocks light from the first display unit 141 to the area where the second display unit 142 displays an image.

  An example of the light limiting unit 143 is a liquid crystal panel in which a plurality of liquid crystal elements are arranged in a matrix. In this case, the first display control unit 105 controls the liquid crystal element of the light limiting unit 143 to cause the liquid crystal element at a position corresponding to the region where the second display unit 142 displays an image to substantially block light, Light is substantially transmitted to the liquid crystal elements at other positions. As a result, even when an image is displayed in the entire area of the first display unit 141, the display content of the first display unit 141 and the display content of the second display unit 142 overlap and enter the eyes of the viewer. Can be prevented.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

  100 image acquisition unit, 105 first display control unit, 110 first image generation unit, 120 second image generation unit, 112 right end processing unit, 114 left end processing unit, 120 second image generation unit, 141 first display unit, 142 Second display unit, 143 Light limiting unit, 145 lens, 190 position, 200 screen, 210 right frame image, 220 left frame image, 230, 240 object, 300 image, 310 left eye image, 320 right eye image, 400 Image, 440 area

Claims (8)

A first display for displaying a first image;
A second display unit that is disposed closer to the viewer than the first display unit, transmits the light of the first image, and displays a second image;
A display device, comprising: a lens disposed between the first display unit and the second display unit and providing a virtual image of the first image to a viewer.   The display device according to claim 1, wherein the lens forms a virtual image of the first image at a position away from the viewer from the first display unit.   The display device according to claim 1, wherein the second display unit displays a frame image representing an outer frame of the display screen in a peripheral region of the display screen.   The second display unit displays, as the second image, a right-eye image that should be visually recognized by the viewer's right eye and a left-eye image that should be visually recognized by the viewer's left eye. 4. The display device according to any one of 3. A first image generation unit that generates a right-eye image and a left-eye image obtained by shifting the two-dimensional image to the left or right on the display screen;
The display device according to claim 4, wherein the second display unit displays a right-eye image and a left-eye image generated by the first image generation unit. A right end processing unit for adding a right end image displayed within a predetermined range from the right end of the display screen to the right side of the image for the left eye generated by the first image generation unit;
A left end processing unit for adding a left end image displayed within a predetermined range from the left end of the display screen to the left side of the left eye image generated by the first image generation unit;
The display device according to claim 5, wherein the second display unit displays the image for the left eye to which the right end image is added and the image for the right eye to which the left end image is added.   The first display unit displays, as the first image, a right-eye image that should be visually recognized by a viewer's right eye and a left-eye image that should be visually recognized by a viewer's left eye. The display device according to any one of 6 to 6. A second image generation unit that generates a right-eye image and a left-eye image obtained by shifting a two-dimensional image left and right on the display screen;
The display device according to claim 7, wherein the first display unit displays a right-eye image and a left-eye image generated by the second image generation unit.

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