KR20040017048A - Display device capable of displaying 2-dimensional and 3-dimensional images - Google Patents

Abstract

PURPOSE: A display device used for both two-dimensional images and three-dimensional images is provided to selectively realize two-dimensional images and three-dimensional images with one single display device, and improve the quality of stereoscopic images by restraining moire due to inference of a lenticular lens with the images. CONSTITUTION: A flat panel display(4) displays two-dimensional images photographed by one camera, and multi-view images photographed by at least two or more cameras. A lenticular lens plate(6) is arranged in front of the flat panel display for spatially dividing the multi-view image in right and left eye directions. A driving unit(8) is connected with the lenticular lens plate for vibrating the lenticular lens plate in a horizontal axial direction of a screen at a high speed in a two-dimensional mode, and fixes the lenticular lens plate in a stop state in a three-dimensional mode. Vibration guide units(10) are fixed at two long sides of the lenticular lens plate for guiding vibration of the lenticular lens plate.

Description

DISPLAY DEVICE CAPABLE OF DISPLAYING 2-DIMENSIONAL AND 3-DIMENSIONAL IMAGES}

The present invention relates to a display device, and more particularly, to display a two-dimensional image and a three-dimensional image using a lenticular lens, thereby selectively implementing a two-dimensional image and a three-dimensional image with one display device. Relates to a device.

Typical display devices such as Cathode Ray Tube (CRT), Liquid Crystal Display (LCD), Plasma Display Panel (PDP), etc. implement a predetermined image on a two-dimensional screen so that the viewer You will see a two-dimensional image implemented.

On the other hand, the three-dimensional image display device is a device that provides a different image to the left and right eyes of the viewer to feel the sense of distance and three-dimensional feeling to the viewer's image, a direct view that can watch three-dimensional images without special equipment such as three-dimensional glasses Auto-stereoscopic devices are known as direct-view types.

The auto-stereoscopy device includes a lenticular lens plate on the front of the display device to spatially divide left and right eye images implemented in the display device into left and right eyes of the viewer through the lenticular lens. Provide stereoscopic images. Prior patents relating to such auto-stereoscopy devices include US Pat. No. 6,064,424 and US Pat. No. 6,069,650.

However, until now, auto-stereoscopic devices cannot implement a two-dimensional image by a fixed lenticular lens plate, and thus have a disadvantage of limited use range for stereoscopic images.

In addition, the alignment angle of the lenticular lens and the display device according to the vertical direction of the screen disclosed in the prior patent is 9.46 °, which is a result of the inventor's experiment, and the comb pattern is caused by the interference between the lenticular lens and the image implemented in the display device. There is a disadvantage in that it causes annoyance to viewers.

Accordingly, an aspect of the present invention is to solve the above problems, and an object of the present invention is to provide a display device for combining two-dimensional and three-dimensional images that can selectively implement two-dimensional and three-dimensional images with one display device. .

Another object of the present invention is to provide a display device for combining two-dimensional and three-dimensional images which improves the image quality of a stereoscopic image by suppressing comb pattern generation due to interference between an image implemented in a display device and a lenticular lens.

1 is a front view of a display device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the flat panel display and the lenticular lens plate shown in FIG. 1. FIG.

3 is a side view of the vibration guide unit shown in FIG. 1.

4 is a schematic diagram for explaining an image according to seven views.

5 is a schematic diagram for explaining a spatial region by a combination of a flat panel display and a lenticular lens plate.

6 is a partially enlarged view of a flat panel display for explaining the alignment of the image arrangement of the flat panel display and the lenticular lens plate;

In order to achieve the above object, the present invention,

A flat panel display that displays two-dimensional images taken by one camera or a multi-view image taken by at least two cameras, a lenticular lens plate disposed in front of the flat panel display, and a lenticular lens plate in conjunction with the lenticular lens plate A driving unit for vibrating the lenticular lens plate in the horizontal axis direction of the screen in a two-dimensional mode for implementing a two-dimensional image, and a vibration guide part fixed to two long sides of the lenticular lens plate to guide the vibration of the lenticular lens plate. Provided is a display device for a two-dimensional image and a three-dimensional image.

Preferably, the plurality of lenticular lenses constituting the lenticular lens plate are aligned to have an inclination angle with respect to the vertical axis of the flat panel display, and the inclination angle between the longitudinal axis of the lenticular lens and the vertical axis of the flat panel display along the longitudinal direction of the lenticular lens. Is made around 15 °.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a display device according to an exemplary embodiment of the present invention, wherein the display device 2 includes a flat panel display 4 including a plurality of pixels to implement an image, and a flat panel display disposed in front of the flat panel display 4. A lenticular lens plate 6 for spatially dividing the image in (4) in the left and right eye directions of the viewer, and a driving unit 8 for vibrating the lenticular lens plate 6 in the horizontal axis direction (the X axis in the drawing) of the screen. And a vibration guide portion 10 for guiding the left and right vibrations of the lenticular lens plate 8.

The flat panel display 4 may be a known liquid crystal display (LCD), a plasma display panel (PDP), or the like, and may have a plurality of R (red) along the horizontal and vertical axes of the screen (X and Y axes in the drawing). , G (green) and B (blue) pixels are provided to implement a predetermined color image through these pixels.

In particular, the flat panel display 4 receives a video signal captured by a single camera in a two-dimensional mode to implement a two-dimensional image. In the three-dimensional mode, a flat panel display 4 receives a video signal captured by at least two cameras and describes a mapping described later. A multi-view image is provided in combination with the lenticular lens plate 6 through a mapping process.

As shown in FIG. 2, the lenticular lens plate 6 includes a plurality of semi-circular lenticular lenses 12 aligned along a vertical axis direction of the screen (the Y axis of the drawing), and the respective lenticular lenses The lens 12 is arranged to correspond to two or more pixels among the plurality of pixels aligned in the horizontal axis direction of the screen (the X axis of the drawing), and the pitch of the lenticular lens 12 is adjusted according to the required multi-viewpoint number. It is set to have a constant relationship with the horizontal pitch.

The lenticular lens plate 6 is not directly fixed to the flat panel display 4, but is mounted on the pair of vibration guides 10 so that the position of the lenticular lens plate 6 can be changed in the horizontal axis direction of the screen (the X axis of the drawing). The above-mentioned driving unit 8 vibrates the lenticular lens plate 6 in the two-dimensional mode in the horizontal axis direction of the screen (the X axis in the drawing).

3 is a side view of the vibration guide unit illustrated in FIG. 1, wherein the vibration guide unit 10 is a type of linear bearing positioned at two long sides of the lenticular lens plate 6, that is, the upper and lower long sides of the lenticular lens plate 6. Is done. That is, the respective vibration guide part 10 is composed of the first and second guide rails 14 and 16 mounted with rolling parts, and the first guide rail 14 is fixed to the lenticular lens plate 6. The two guide rails 16 are fixed to the case 18 of the flat panel display 4.

In addition, the driving unit 8 may rotate the lenticular lens plate 6 in the horizontal axis direction of the screen according to the driving of the vibration motor 20 and the vibration motor 20 fixed to the case 18 of the flat panel display 4. X-axis) of the power transmission connector 22 to vibrate at high speed.

Preferably, the vibration motor 20 is made of a piezo electric motor for converting an electrical signal into mechanical vibration energy, and the power transmission connector 22 has one end thereof as a first guide rail of the vibration guide part 10. It is fixed to 14 to vibrate the first guide rail 14 in the horizontal axis direction of the screen (X-axis in the drawing) by the operation of the vibration motor 20.

With the above configuration, the above-described display apparatus 2 can selectively implement a 2D image and a 3D image.

First, in the three-dimensional mode, the driving unit 8 is in an off state, and the lenticular lens plate 6 is fixed to the outside of the flat panel display 4 in a stationary state, and the flat panel display 4 has two or more cameras. Received by the image signal is taken to implement through different pixels, and the lenticular lens 12 divides the image of the flat panel display 4 in the left and right direction of the viewer to implement a three-dimensional image.

In contrast, in the 2D mode, the flat panel display 4 receives a video signal photographed by a single camera and displays a 2D image. At this time, when the flat panel display 4 implements the two-dimensional image with the lenticular lens plate 6 attached thereto, the image is blurred by the lenticular lens 12 so that the viewer identifies the image of the flat panel display 4. You will not be able to.

Accordingly, in the two-dimensional mode, the driving unit 8 is turned on, and the power transmission connector 22 vibrates the first guide rail 14 at high speed by driving the vibration motor 20. As the movement of the rail 14 is supported by the second guide rail 16, the lenticular lens plate 6 fixed to the first guide rail 14 is vibrated at high speed in the horizontal axis direction of the screen (the X axis in the drawing). .

Due to the left and right vibration of the lenticular lens plate 6, the refraction effect of the lenticular lens 12 disappears, and the two-dimensional image implemented by the flat panel display 4 is transmitted to the viewer as it is. This is the same principle that the view behind the railing is obstructed when the car is standing, but the railing disappears when the car is running.

Preferably, the vibration frequency of the lenticular lens plate 6 is in the range of 25 to 30 Hz in the two-dimensional mode, which means that the vibration and noise of the display device are severe when the vibration frequency exceeds 30 Hz, and the lenticular is lower than 25 Hz. This is because the lens effect remains. And the displacement of the lenticular lens plate 6 is about twice the pitch p of the lenticular lens 12.

On the other hand, the display device according to the present embodiment improves the image quality of the stereoscopic image through the alignment state of the lenticular lens plate to be described later, this embodiment using a motion parallex method having seven multi-view It describes the three-dimensional mode operation process by the. At this time, the motion parallax means that the degree of view of the side of the object changes according to the left and right movement of the viewer.

FIG. 4 is a schematic diagram for explaining an image according to seven views. When seven cameras are installed around a specific object and the target is photographed, each camera captures an object viewed from the corresponding position. Seven images, which depend on the position of the camera, were arranged in camera order.

FIG. 5 is a schematic diagram for describing a spatial region by a combination of a flat panel display and a lenticular lens plate, and FIG. 6 is a partially enlarged view of a flat panel display for explaining an alignment state of the image display and the lenticular lens plate of the flat panel display. to be.

As shown, the lenticular lens plate 6 has two lenticulars in seven of a plurality of R, G, and B pixels arranged along the horizontal axis direction (the X axis of the drawing) of the screen in the flat panel display 4. The lenses 12 are disposed to correspond to each other, and the seven pixels corresponding to the two lenticular lenses 12 have views of 1, 3, 5, 7, 2, 4, and 6 views along the horizontal axis direction of the screen. An image signal is provided to display it.

Therefore, the images at viewpoints 1, 3, 5, 7, 2, 4, and 6 arranged along the horizontal axis direction (X-axis in the drawing) are refracted by the lenticular lens 12, so that 1, Zooms to images 2, 3, 4, 5, 6 and 7.

That is, in the region (A) shown in FIG. 5, the viewer receives the images (1, 3) in the right eye (R) and the left eye (L), respectively, to feel a three-dimensional feeling, and moves from the (A) area to the (B) area In the meantime, the viewer receives images (1,3), (2,4), (3,5), (4,6), and (5,7) for the right eye (R) and the left eye (L), respectively. . As a result, viewers see different images in five spatial domains, and this motion parallax has the same effect as moving a real object.

As described above, the lenticular lens 12 that spatially divides the image of the flat panel display 4 into the left and right eyes of the viewer has a constant inclination angle with respect to the vertical axis of the flat panel display 4 (the Y axis in the drawing). When the length axis of the lenticular lens 12 along the longitudinal direction of the lenticular lens 12 is defined as L, the vertical axis of the flat panel display 4 (the Y axis in the drawing) and the lenticular lens plate ( It is preferable that the inclination angle (alpha) between the longitudinal axis L of 6) consists of 10-15 degrees.

As such, when the lenticular lens plate 6 is aligned at an angle of 10 to 15 ° to the outer surface of the flat panel display 4, the respective lenticular lens 12 is enlarged and provided to the viewer. In this case, as the angle of inclination α of the lenticular lens plate 6 is enlarged, the interference between the image of the flat panel display 4 and the lenticular lens 12 is eliminated, so that the non-light emitting region between the R, G, and B pixels ( For example, the black matrix film corresponds to the viewer's eyes.

Therefore, the present embodiment implements a clean three-dimensional image by suppressing the occurrence of the comb pattern caused by the non-emitting region between the R, G, and B pixels when the three-dimensional image is implemented, and as a result, the image quality of the three-dimensional image is improved. .

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

As described above, the present invention provides a display device that combines two-dimensional and three-dimensional images by selectively implementing a two-dimensional image and a three-dimensional image with one display device. The quality of stereoscopic images is improved by suppressing comb pattern generation caused by interference between the lenticular lens and the lenticular lens.

Claims (9)

A flat panel display for displaying a two-dimensional image taken with one camera or a multi-view image taken with at least two cameras; A lenticular lens plate disposed in front of the flat panel display to spatially divide a multi-view image implemented in the flat panel display in left and right eye directions of a viewer; In the two-dimensional mode in which the flat panel display implements a two-dimensional image in conjunction with the lenticular lens plate, the lenticular lens plate vibrates in the horizontal axis direction of the screen, and the three-dimensional mode in which the flat panel display implements a multiview image. A driving unit to fix the lenticular lens plate in a stopped state; And Vibration guide part fixed to two long sides of the lenticular lens plate to guide the vibration of the lenticular lens plate Two-dimensional and three-dimensional image display device including a. The method of claim 1, And a two-dimensional image and a three-dimensional image display device including the liquid crystal display (LCD) or plasma display panel (PDP). The method of claim 1, 2D and 3D image display device, wherein the lenticular lens plate is composed of a plurality of semi-circular lenticular lens arranged along the vertical axis direction of the screen. The method of claim 1, The vibration guide unit comprises first and second guide rails on which rolling parts are mounted, the first guide rail is fixed to the lenticular lens plate, and the second guide rail is fixed to the case of the flat panel display. Video display device. The method of claim 4, wherein The drive unit is provided between a vibration motor, a vibration motor, and a first guide rail, and includes a two-dimensional image and a three-dimensional image including a power transmission connector for vibrating the first guide rail and the lenticular lens plate at high speed by the operation of the vibration motor. Display device. The method of claim 1, A display apparatus for combining two-dimensional and three-dimensional images, wherein the lenticular lens plate has a vibration frequency of 25 to 30 Hz in the two-dimensional mode. The method of claim 3, The lenticular lens is aligned so as to have an inclination angle with respect to the vertical axis of the flat panel display, and the two-dimensional image having an inclination angle between the longitudinal axis of the lenticular lens and the vertical axis of the flat panel display in the longitudinal direction of the lenticular lens is 10 to 15 °. 3D video display device. A flat panel display for displaying a two-dimensional image taken with one camera or a multi-view image taken with at least two cameras; A lenticular lens plate having a plurality of semi-circular lenticular lenses arranged along the vertical axis of the screen in front of the flat panel display to spatially divide a multi-view image implemented in the flat panel display in the left and right eye directions of the viewer; In the two-dimensional mode in which the flat panel display implements a two-dimensional image in conjunction with the lenticular lens plate, the lenticular lens plate vibrates in the horizontal axis direction of the screen, and the three-dimensional mode in which the flat panel display implements a multiview image. A driving unit to fix the lenticular lens plate in a stopped state; And A vibration guide part fixed to two long sides of the lenticular lens plate to guide vibration of the lenticular lens plate, And displaying the lenticular lens in such a manner that the length axis of the lenticular lens along the longitudinal direction of the lenticular lens is aligned to have an inclination angle of 10 to 15 ° with a vertical axis of the flat panel display. The method of claim 8, A display apparatus for combining two-dimensional and three-dimensional images, wherein the lenticular lens plate has a vibration frequency of 25 to 30 Hz in the two-dimensional mode.