KR101369919B1 - Auto stereoscopic Display Apparatus - Google Patents

Abstract

In the present invention, a stereoscopic image display device is disclosed. In detail, the stereoscopic image display apparatus includes a display module including a plurality of pixels and configured to sequentially display a left image and a right image alternately; A lenticular lens layer configured such that a plurality of lenticular lenses for irradiating the left image to the left eye and for irradiating the right image to the right eye correspond to each pixel of the display module; And a parallax barrier layer in time synchronization with the display module to form a barrier pattern.

Description

Stereoscopic Display Apparatus {Auto stereoscopic Display Apparatus}

The present invention relates to a stereoscopic image display device. More specifically, the present invention relates to a stereoscopic image display device suitable for displaying a high resolution image.

In general, a method of implementing a stereoscopic image (or a 3D image) is implemented by illuminating different images on two eyes of a human, and a stereoscopic image display device uses separate glasses for illuminating different images on two eyes. Depending on whether or not it is necessary, it is divided into a three-dimensional stereoscopic image display device and a non-stereoscopic 3D image display device.

Spectacular stereoscopic image display apparatus must bear the inconvenience of observer wearing special glasses, but non-stereoscopic stereoscopic image display apparatus can feel stereoscopic image simply by staring at the screen without wearing the above glasses. Since the shortcomings of the stereoscopic image display device can be solved, many researches on this are being conducted. The non-stereoscopic 3D display device is largely classified into a lenticular device and a parallax-barrier device.

It is an object of the present invention to provide a stereoscopic image display device suitable for displaying a high resolution image.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, a stereoscopic image display device includes: a display module including a plurality of pixels and configured to sequentially display a left image and a right image alternately; A lenticular lens layer configured such that a plurality of lenticular lenses for irradiating the left image to the left eye and for irradiating the right image to the right eye correspond to each pixel of the display module; And a parallax barrier layer in time synchronization with the display module to form a barrier pattern.

The parallax barrier layer includes a left barrier for blocking the left image and a right barrier for blocking the right image, and the left barrier is in a transparent state and the right barrier is in an opaque state when the left image is displayed. Transitioning, the right side barrier transitions to the transparent state while the left side barrier is opaque when the right image is displayed.

Preferably, the plurality of pixels of the display module may be positioned in the order of one lenticular lens and a barrier pattern composed of the left barrier and the right barrier.

Alternatively, a barrier pattern composed of the left barrier and the right barrier and a lenticular lens may be positioned on each of the plurality of pixels of the display module.

More specifically, the one lenticular lens is characterized in that to irradiate the image displayed in one pixel of the display module with the left eye or the right eye.

According to another aspect of the present invention, a stereoscopic image display device includes a display module including a plurality of pixels and configured to sequentially display a left image and a right image alternately; And a lenticular lens layer configured to correspond to each of the pixels of the display module, wherein the plurality of lenticular lenses including a left eye part for irradiating the left image to the left eye and a right eye part for irradiating the right image to the right eye, respectively. And the right eye part, in time synchronization with the display module, transitions one of the left eye part and the right eye part into an opaque state and the other into a transparent state.

Here, the lenticular lens layer is characterized in that the left eye part is transparent to the opaque state and the left eye part is transparent when the left image is displayed, and the right eye part is transitioned to the transparent state while the left eye is opaque when the right image is displayed. do.

More specifically, the one lenticular lens is characterized in that to irradiate the image displayed in one pixel of the display module with the left eye or the right eye.

The stereoscopic image display device according to the embodiments of the present invention is more suitable for displaying a high resolution image, and in particular, can provide convenience for viewing stereoscopic images by providing a larger viewing angle to the viewer.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a view showing a conventional stereoscopic image display device.
2 is a conceptual diagram of a stereoscopic image display device according to a first embodiment of the present invention.
3 is a cross-sectional view of a stereoscopic image display device according to a first embodiment of the present invention.
4 is a conceptual diagram of a stereoscopic image display device according to a second embodiment of the present invention.
5 is a cross-sectional view of a stereoscopic image display device according to a second embodiment of the present invention.
6 is a conceptual diagram of a stereoscopic image display device according to a third embodiment of the present invention.
7 is a cross-sectional view of a stereoscopic image display device according to a third embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced.

The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details. In some instances, well-known structures and devices are omitted or shown in block diagram form around the core functions of each structure and device in order to avoid obscuring the concepts of the present invention. In the following description, the same components are denoted by the same reference numerals throughout the specification.

In the conventional method, the stereoscopic image display device is implemented by separating the viewing area of the left image and the right image by using a parallax barrier or a lenticular lens. In this case, the left image and the right image are displayed on a set of different columns of the same display module. For example, the left image is displayed in cells of odd columns, and the right image is displayed in cells of even columns. In such a case, since both the left image and the right image are displayed on the same panel, the resolution of each image is 1/2 or less of the panel resolution.

As a method of making the resolution of the images the same as the resolution of the original panel, there is a method of sequentially displaying the left image and the right image.

1 is a view disclosed in US Pat. No. 5,969,850 as a stereoscopic image display device.

Referring to FIG. 1, the stereoscopic image display device 20 includes a backlight unit 21, a spatial light modulator 22, a lenticular lens array 23, and a high speed response liquid crystal panel 26. The spatial light modulator 22 is composed of a plurality of cells 24 and 25 that are switched between a transparent state and an opaque state in accordance with the power on / off. In the stereoscopic image display device 20 disclosed in the U.S. patent, the liquid crystal panel 26 alternately displays the left eye image and the right eye image on the entire screen in a very fast time period. The spatial light modulator 22 switches the cells 24 and 25 in synchronization with the left and right image switching time of the liquid crystal panel 26. For example, while the liquid crystal panel 26 is displaying a left eye image, the spatial light modulator 22 switches the left eye cell 24 to a transparent state, so that the light emitted from the backlight unit 21 is emitted by the user. Directed to the left eye view 28 only. In addition, while the liquid crystal panel 26 is displaying an image for a right eye, the spatial light modulator 22 turns on the cell for the right eye 25 so that light emitted from the backlight unit 21 is transmitted to the right eye field of the user 27. To be directed only). In the normal two-dimensional mode, all the cells 24, 25 of the spatial light modulator 22 are turned on.

However, the U.S. patent has a problem that crosstalk occurs between the left eye image and the right eye image for the following reason, so that a user cannot view an accurate stereoscopic image.

In general, most image display panels sequentially scan an image of one frame from the top to the bottom of the screen, and while the image of the previous frame is displayed from the bottom of the screen, the image of the next frame is displayed at the top of the screen. . For example, when T is a time when one frame is completely scanned, the right eye image is displayed on the entire screen at time 0, and the left eye image is displayed on the entire screen at time T. However, since the right eye image is continuously changed to the left eye image between time 0 and T, the left eye image is displayed at the top of the screen and the right eye image is displayed at the bottom of the screen.

As a result, there is a time when the left eye image and the right eye image share the screen. Therefore, as in the US patent, when the cells 24 and 25 of the spatial light modulator 22 are simply turned on and off alternately, the left eye image and the right eye image are not completely separated from each other. There is a problem that severe crosstalk is detected.

In order to solve this problem, the present invention proposes a stereoscopic image display device combining a parallax barrier and a lenticular lens. In the following embodiments of the present invention, it is assumed that the left image and the right image are alternately displayed.

2 is a conceptual diagram of a stereoscopic image display device according to a first embodiment of the present invention.

Referring to FIG. 2, the stereoscopic image display device according to the first embodiment of the present invention includes a display module 100 and a lenticular lens 200 that separates and outputs a signal from the display module 100 into a left eye field and a right eye field ) And the parallax barrier 300 that is switched in synchronization with the display module 100. The display module 100 has a plurality of pixels, each of which consists of a display element for displaying an image. As the display device, a self-luminous display device such as an organic light emitting diode (OLED), a field emitting diode (FED), or a light-receiving display device such as a liquid crystal display (LCD) may be employed.

Each lenticular lens 200 is disposed to cover one pixel of the display module 100, and the signal from each pixel 122 is separated into a left eye field and a right eye field.

The parallax barrier 300 may be, for example, a high-speed response liquid crystal panel, and in this case, includes two substrates and a plurality of cells filled with a liquid crystal material. Two cells of the parallax barrier 300 correspond to one lenticular lens 200, and the pitch of each cell is configured to be half or slightly smaller than the pitch of the lenticular lens 200. The plurality of cells are switched in synchronization with the vertical scanning time of the display module 100 and change into a transparent state or an opaque state.

That is, when the cells of the parallax barrier 300 positioned on the left side become transparent and the cells positioned on the right side become opaque state with respect to each lenticular lens 200 as shown in FIG. The signal, that is, the left image, reaches the left eye through the left half of the lenticular lens 200 along the path indicated by the solid line.

On the contrary, when the cells of the parallax barrier 300 positioned on the right side with respect to each lenticular lens 200 become transparent, the signal from the display module 100 is determined by the lenticular lens 200 along the path indicated by the dotted line. The right half reaches the right eye.

3 is a cross-sectional view of a stereoscopic image display device according to a first embodiment of the present invention.

FIG. 3 illustrates a cross-sectional view of components corresponding to one pixel of the display module 100 in the 3D image display device according to the first embodiment described with reference to FIG. 2.

As described above, one lenticular lens 200 is configured to correspond to one pixel of the display module 100. In addition, the parallax barrier 300 having a cell structure is configured such that the left cell and the right cell are one set and correspond to the lenticular lens 200.

That is, when the left image is displayed on the display module 100, in the parallax barrier 300, the cells positioned on the left side of the lenticular lens 200 become transparent and the cells positioned on the right side become opaque. Accordingly, only the image irradiated through the left half of the lenticular lens 200 reaches the left eye. However, the image irradiated through the right half of the lenticular lens 200 is blocked by the cells of the parallax barrier 300 in an opaque state.

4 is a conceptual diagram of a stereoscopic image display device according to a second embodiment of the present invention.

Referring to FIG. 4, the stereoscopic image display device according to the second exemplary embodiment of the present invention, like the first exemplary embodiment, transmits signals from the display module 100 and the display module 100 to the left eye field and the right eye field. It includes a lenticular lens 200, and a parallax barrier 300, which includes a plurality of cells and is switched in synchronization with the configuration display module 100. Each lenticular lens 200 is disposed to cover one pixel of the display module 100, and the signal from each pixel 122 is separated into a left eye field and a right eye field.

The difference from the first embodiment is that the positions of the lenticular lens 200 and the parallax barrier 300 are interchanged.

In FIG. 4, when the cells of the parallax barrier 300 positioned on the left side of the lenticular lens 200 become transparent and the cells on the right side become opaque, the signal from the display module 100 is solid. A left eye of the lenticular lens 200 is reached along the path indicated by the left eye.

On the contrary, when the cells located on the right side of each lenticular lens 200 become transparent, the signal from the display module 100 may reach the right eye through the right half of the lenticular lens 200 along the path indicated by the dotted line. do.

That is, similarly to the first and second embodiments, even if the positions of the lenticular lens 200 and the parallax barrier 300 are changed, the same effect can be obtained.

5 is a cross-sectional view of a stereoscopic image display device according to a second embodiment of the present invention.

FIG. 5 illustrates a cross-sectional view of components corresponding to one pixel of the display module 100 in the 3D image display device according to the second embodiment described with reference to FIG. 4.

As described above, one lenticular lens 200 is configured to correspond to one pixel of the display module 100. In addition, the parallax barrier 300 having a cell structure is configured such that the left cell and the right cell are one set and correspond to the lenticular lens 200.

The difference from FIG. 3 shown in the first embodiment is that the positions of the lenticular lens 200 and the parallax barrier 300 are interchanged. That is, in the second embodiment, the parallax barrier 300 is positioned directly on the display module 100, and the lenticular lens 200 is positioned thereon.

6 is a conceptual diagram of a stereoscopic image display device according to a third embodiment of the present invention.

Referring to FIG. 6, the stereoscopic image display apparatus according to the third exemplary embodiment of the present invention, like the first exemplary embodiment, transmits signals from the display module 100 and the display module 100 to the left eye field and the right eye field. It can be seen that it consists only of the lenticular lens 200 to be separated and emitted. Each lenticular lens 200 is disposed to cover one pixel of the display module 100, and the signal from each pixel 122 is separated into a left eye field and a right eye field.

In addition, in the third embodiment of the present invention, each of the lenticular lens 200 is composed of a left half and a right half, the left half and the right half are switched in synchronization with the vertical scanning time of the display module 100 and are transparent or opaque. Can change state.

Referring to FIG. 6, when the left half of each lenticular lens 200 is in a transparent state and the right half is in an opaque state, signals from the display module 100 are lenticular lenses along a path indicated by a solid line. A left eye is reached through the left half of 200. On the contrary, when the right half of each lenticular lens 200 becomes transparent, the signal from the display module 100 reaches the right eye through the right half of the lenticular lens 200 along a path indicated by a dotted line.

7 is a cross-sectional view of a stereoscopic image display device according to a third embodiment of the present invention.

FIG. 7 illustrates a cross-sectional view of components corresponding to one pixel of the display module 100 in the 3D image display device according to the third embodiment described with reference to FIG. 6.

As described above, one lenticular lens 200 is configured to correspond to one pixel of the display module 100. In addition, each of the lenticular lens 200 may be configured as a left half and a right half, and the left half and the right half may be configured to be switched in synchronization with the vertical scanning time of the display module 100 and change into a transparent state or an opaque state. .

That is, when the left image is displayed on the display module 100, the left half of each lenticular lens 200 is in a transparent state and the right half is in an opaque state, and thus the image is irradiated through the left half of the lenticular lens 200. Only the left eye reaches.

In addition, when the right image is displayed on the display module 100, the right half of each lenticular lens 200 is in a transparent state and the left half is in an opaque state, thus only an image irradiated through the right half of the lenticular lens 200. This right eye is reached.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The foregoing description of the preferred embodiments of the present invention has been presented for those skilled in the art to make and use the invention. Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. I can understand that you can.

Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

delete delete delete delete delete A display module composed of a plurality of pixels and configured to sequentially display a left image and a right image alternately; And
A plurality of lenticular lenses including a left eye portion for irradiating the left image to the left eye and a right eye portion for irradiating the right image to the right eye, the lenticular lens layer configured to correspond to each pixel of the display module,
The left eye part and the right eye part,
In time synchronization with the display module, one of the left eye part and the right eye part transitions into an opaque state and the other into a transparent state,
The lenticular lens layer is,
When the left image is displayed, the left eye part transitions to the opaque state while the left eye part is transparent.
And the left eye part transitions to a transparent state while the left eye part is in an opaque state when the right image is displayed. delete The method according to claim 6,
The one lenticular lens,
Characterized in that to irradiate the image displayed in one pixel of the display module to the left eye or the right eye,
Stereoscopic image display device.

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