KR101726863B1 - Multiview display and method for displaying multiview image - Google Patents

Abstract

The multi-viewpoint display apparatus includes a display panel including a plurality of sub-pixels displaying a plurality of viewpoint images, and a lenticular lens array positioned on the display panel. The controller determines the number of viewpoint images according to the display position of the image And transmits a signal of the viewpoint image according to the number of determined viewpoint images to the sub-pixels of the display position.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-view display and a multi-view image display method thereof, and more particularly, to a multi-view display and a multi-view image display method capable of reducing nonlinear distortion generated at the edge of a multi-

Conventional multi-point displays are realized by bonding a lenticular lens so as to have a slope to a flat panel. The reason for joining the slant is to avoid color interference due to crosstalk, This is to match the vertical resolution ratio. For this reason, although a lenticular lens is designed to have a slope, a large multi-view display of 50 inches or more causes a nonlinear distortion that is represented by black at the edge by inclination as shown in Fig.

When the multi-view image is reproduced due to the nonlinear distortion, the edge portion is not seen as a three-dimensional object, and a ghost phenomenon occurs in which the images overlap.

The object of the present invention is to provide a multi-viewpoint display device and a multi-viewpoint image display method capable of reducing nonlinear distortion occurring at the edge of a multi-view display.

According to one embodiment of the present invention, a multi-view display device is provided. The multi-view point display device includes a display panel, a lenticular lens array, and a control unit. The display panel includes a plurality of sub-pixels for displaying a plurality of view-point images. The lenticular lens array is disposed on the display panel and includes a plurality of lenticular lenses formed to be inclined in the vertical direction of the plurality of sub-pixels. The controller determines the number of view images according to the display position of the image, and transmits a signal of the view image of the determined number of view images to the sub-pixels at the display position.

According to the embodiment of the present invention, it is possible to reduce the ghosting phenomenon at the edge caused by nonlinear distortion and to enhance the three-dimensional shape of the center portion.

1 is a schematic view of a multi-view display apparatus according to an embodiment of the present invention.
FIG. 2 is a view illustrating an example of a viewpoint image allocation method of the controller shown in FIG. 1. Referring to FIG.
3 is a diagram illustrating an example of a nonlinear distortion image screen at a specific time point.
4 is a view illustrating a viewpoint image allocation method of the controller shown in FIG.
FIG. 5 is a graph showing the number of view images according to display positions of images according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification and claims, when a section is referred to as "including " an element, it is understood that it does not exclude other elements, but may include other elements, unless specifically stated otherwise.

A multi-viewpoint display apparatus and a multi-viewpoint image display method according to an embodiment of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a view schematically showing a multi-view display according to an embodiment of the present invention. FIG. 2 is a view illustrating an example of a viewpoint image allocation method of the controller shown in FIG. 1. FIG. Distortion picture screen. Fig.

Referring to FIG. 1, the multi-view display 100 includes a display panel 110, a lenticular lens array 120, and a control unit 130.

The display panel 110 includes a plurality of pixels arranged in a plurality of rows and a plurality of columns. Each pixel includes a plurality of sub-pixels 112. The sub-pixel displays, for example, any one of red (R), green (G) and blue (B) colors. Pixel is a minimum image display unit in which at least one sub-pixel 112 is combined to represent complete color information, for example, three sub-pixels (e.g., red, green and blue) The pixel 112 may be represented by one pixel.

A lenticular lens array 120 is disposed on the display panel 110.

The lenticular lens array 120 includes a plurality of lenticular lenses 122. The plurality of lenticular lenses 122 have a semi-cylindrical shape and are arranged in one direction. The lenticular lens 122 is inclined so as to have a predetermined slope with respect to the direction of the vertical axis (y) of the plurality of sub-pixels 112. For example, the slope can be set between 6 and 18 degrees. The lenticular lens array 120 separates the incident beam into a plurality of viewpoints and emits them. The beams transmitted through the lenticular lens array 120 are separated from each other at viewing distances. The lenticular lens 122 has a constant curvature and pitch in order to separate the image formed in each sub-pixel 112 into respective viewpoints. Each lenticular lens 122 may be arranged to correspond to two or more of the sub-pixels 112 arranged along the horizontal axis (x) direction, and the pitch of the lenticular lens 122 may be Pixel 112 is set to have a constant relationship with the horizontal pitch of the sub- Accordingly, the image displayed on the display panel 110 is changed in its progress path and is provided separately at each view point.

The control unit 130 transmits the signals of the viewpoint images to the plurality of sub-pixels 112 constituting the display panel 110. For example, in the case where one lenticular lens 122 is arranged to correspond to nine sub-pixels 112 arranged along the horizontal axis (x) direction as shown in Fig. 2, The signals of the first to ninth view images 1 to 9 can be transmitted to the nine sub-pixels, respectively.

At this time, in the case of a large multi-point display, since the lenticular lens 122 is inclined so as to have a predetermined slope with respect to the vertical axis (y) direction of the sub-pixel 112, A nonlinear distortion expressed by a color occurs. When the multi-view image is reproduced due to the nonlinear distortion, the edge portion in the specific viewpoint region may not be seen as a three-dimensional object, and a ghost phenomenon in which the images are superimposed may occur.

Hereinafter, a method of visually reducing the ghost phenomenon caused by such nonlinear distortion will be described with reference to FIGS. 4 and 5. FIG.

4 is a view illustrating a viewpoint image allocation method of the controller shown in FIG.

Referring to FIG. 4, the controller 130 determines the number of view images according to the display position of the image (S410). The number of viewpoint images can be determined as shown in Equation (1).

In Equation (1), Vmax represents the number of view images and V represents the number of viewpoints of the lenticular lens. x and y represent the horizontal and vertical positions of the image, and [sigma] is the edge boundary value setting constant.

If the number of view images is determined according to Equation (4), the number of view images is small at the edge position by?, And the number of view images is increased toward the center position.

The control unit 130 transmits the signal of the viewpoint image to each subpixel according to the number of viewpoint images determined according to the display position (x, y) of the image (S420).

For example, when the number of view images (Vmax) is determined to be 1 in a predetermined area, the controller 130 stores one view image, for example, a signal of the view image 1 . When the number of view images (Vmax) is determined to be 2 in a predetermined area, the controller 130 displays two neighboring view images having less parallax, for example, 1 view image 1, The viewpoint image 2 and the viewpoint image 3 and the viewpoint image 4 can be transmitted. Similarly, when the number of view images (Vmax) is determined to be 9 in a predetermined area, the controller 130 stores nine view images, for example, 1 to 9 view images 1 to 9, 9). ≪ / RTI >

FIG. 5 is a graph illustrating the number of viewpoint images according to display positions of an image according to an embodiment of the present invention. In FIG. 5, it is assumed that? Is 10000 and V is 9.

As shown in FIG. 5, the number of view images is small at the edge position, and the number of view images increases toward the center position. Therefore, the ghost phenomenon can be reduced since the same viewpoint image is assigned to the sub-pixel at the edge, or the viewpoint image with less time difference is allocated. Also, since the number of viewpoint images increases as the distance to the center position increases, the stereoscopic effect may be emphasized at the center position.

The embodiments of the present invention are not limited to the above-described apparatuses and / or methods, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded, Such an embodiment can be readily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (5)

A display panel including a plurality of sub-pixels for displaying a plurality of view-point images,
And a plurality of lenticular lenses formed on the display panel and inclined in the vertical direction of the plurality of sub-pixels, wherein each lenticular lens is arranged to correspond to at least two sub-pixels, and
The display area of the image is determined by the horizontal axis length of each lenticular lens so that the number of view images increases as the display area of the image moves from the edge area to the center area of the image, And transmits a signal of a viewpoint image according to the number of the determined viewpoint images to the sub-pixels of the display areas,
And a display device. delete The method of claim 1,
The controller determines the number of viewpoint images according to a formula,
The equation

Lt;
Wherein Vmax represents the number of viewpoint images, V represents the number of viewpoints of the lenticular lens, x and y represent the horizontal and vertical positions of the image, Device. delete The method of claim 1,
Wherein the controller transmits a signal of an adjacent viewpoint image having a smaller parallax number as the number of viewpoint images determined respectively to the sub-pixels of the display area.

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