KR101297249B1 - Three dimensional image display device - Google Patents

Abstract

The present invention relates to a three-dimensional stereoscopic image display device. According to the present invention, there is provided a stereoscopic image display device comprising: a display panel in which unit pixels consisting of a plurality of subpixels are repeatedly arranged; An image signal generator for supplying a planar image signal or a stereoscopic image signal to each of the plurality of subpixels; When the planar image mode is set, the planar image signal composed of R, G, and B is supplied to the unit pixel, and when the stereoscopic image mode is set, n subpixels are set as the stereoscopic pixel so that n different stereoscopic images are applied to the stereoscopic pixel. And a control unit for controlling the image signal generation unit to supply an image signal, wherein the planar image signals of R, G, and B to be allocated as unit pixels when the 3D image mode is switched to the planar image mode are identical among adjacent unit pixels. And controlling the video signal generator so that the three-dimensional video signal is supplied to the sub-pixels to which the stereoscopic video signal is applied. As a result, when the stereoscopic image is converted to the planar image, the planar image may be naturally realized without color separation.

Description

Stereoscopic Display Device {THREE DIMENSIONAL IMAGE DISPLAY DEVICE}

1 is a schematic diagram illustrating a conventional stereoscopic image display device;

2 is a view for explaining the principle of color separation in a conventional stereoscopic image display device;

3 and 4 are views for explaining the configuration of a stereoscopic image display device according to the present invention;

5 is a block diagram for explaining a configuration of a stereoscopic image display device according to the present invention;

6 is a view for explaining a method of driving a stereoscopic image display device according to the present invention.

Description of Reference Numerals of Major Parts of the Drawings [

10: slit barrier 11: slit

12 barrier 100 display panel

200: control unit 210: memory

220: control signal generator 300: video signal generator

350: graphic source

The present invention relates to a stereoscopic image display apparatus, and more particularly, to an image display apparatus capable of naturally implementing a planar image without color separation when switching from a stereoscopic image to a planar image.

One of the most commonly used methods for implementing a stereoscopic display technology is a method using binocular display. The method of using bilateral parallax is to express the image taken by the camera corresponding to the left eye and the image taken by the camera corresponding to the right eye on the same display module, and to make it enter the viewer's left eye and the right eye, respectively. By inputting images observed from different angles to the eyes, the viewer can recognize the sense of space through the brain.

In this case, a method of dividing the image into the viewer's left eye and the right eye may be divided into a method of using a barrier and a method of using a lenticular lens, which is a kind of cylindrical lens. .

1 is a block diagram illustrating a barrier type stereoscopic display device according to the related art, and illustrates a method of using a barrier.

The barrier type stereoscopic display device according to the related art is a display module 1 in which a left eye image L and a right eye image R are displayed as a stereoscopic image display surface, as shown in FIG. The display module 1 is disposed to face the display module 1 and includes a slit barrier 2 alternately formed with an opening 2a and a blocking part 2b.

In the barrier type, light is blocked using the blocking portion 2b of the slit barrier 2 to divide the left eye image L and the right eye image R into the viewer's left eye and right eye, respectively.

However, the conventional barrier type stereoscopic display device is configured such that the opening portion 2a and the blocking portion 2b are fixed to each other to be implemented around a stereoscopic image. Accordingly, there is a disadvantage that it is difficult to selectively implement the planar image and the stereoscopic image by mutual switching. That is, it is difficult to turn on / off the function of the barrier.

Accordingly, as shown in FIG. 2, when switching to a planar image while driving to a stereoscopic image, a color separation phenomenon in which the color of the planar image is separated occurs. Specifically, a color separation phenomenon in which planar images of R, G, and B are also separated like stereoscopic images by the slit barrier 2 disposed on the upper surface of the display module 1 is generated. Image quality is deteriorated by the color separation phenomenon, which causes fatigue to viewers when viewing a flat image.

Accordingly, it is an object of the present invention to provide an image display device that can naturally implement a planar image without color separation when switched from a stereoscopic image to a planar image.

According to the present invention, there is provided a display panel in which unit pixels consisting of a plurality of subpixels are repeatedly arranged; An image signal generator for supplying a planar image signal or a stereoscopic image signal to each of the plurality of subpixels; When the planar image mode is set, the planar image signal composed of R, G, and B is supplied to the unit pixel, and when the stereoscopic image mode is set, n subpixels are set as the stereoscopic pixel so that n different stereoscopic images are applied to the stereoscopic pixel. And a control unit for controlling the image signal generation unit to supply an image signal, wherein the planar image signals of R, G, and B to be allocated as unit pixels when the 3D image mode is switched to the planar image mode are identical among adjacent unit pixels. A stereoscopic image display device is characterized in that the image signal generation unit is controlled to be supplied to sub-pixels to which a stereoscopic image signal is applied.

Here, the control unit is configured to distribute the planar image signal of R among the planar image signals of R, G, and B supplied to adjacent unit pixels to subpixels to which the planar image signal of R of the adjacent unit pixel is supplied, and the planar image of G The signal may be distributed to subpixels to which the planar image signal of G of the adjacent unit pixel is supplied, and the image signal generator may be controlled to be distributed to the subpixels to which the planar image signal of B of the adjacent unit pixel is supplied. Can be.

In the plurality of unit pixels, the first to ninth unit pixels are repeatedly arranged up, down, left, and right in units of 3x3, and the fifth to be surrounded by the first to fourth and the sixth to ninth unit pixels. When the planar image signals of R, G, and B are applied to the unit pixels of, the controller controls the planar image signals of R, G, and B to be allocated to the fifth unit pixel. The image signal generation unit may be controlled to be supplied to a subpixel to which the same stereoscopic image signal and the same planar image signal are applied among the ninth unit pixels.

The unit pixel may be a fifth unit pixel, and the adjacent unit pixels may be the first to fourth and sixth to ninth unit pixels.

The controller may divide the R, G and B plane image signals into subpixels to which the same plane image signal is applied.

Further, the unit pixel is composed of three subpixels to which the planar image signals of R, G, and B are respectively supplied, and the stereoscopic pixel is composed of n subpixels arranged in succession, and the stereoscopic image signal is n. First to n-th stereoscopic image signals respectively supplied to the subpixels, and when the display panel is driven in the stereoscopic image mode, the three subpixels include first, third, and third of the first to nth stereoscopic image signals. When the fifth stereoscopic image signals are allocated to each other, the controller controls R, G, and B plane image signals allocated to the three subpixels to be switched to the planar image mode from the stereoscopic image mode, respectively. The image signal generation unit may be controlled to be supplied to the subpixel to which the third and fifth stereoscopic image signals are applied.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail. Hereinafter, a stereoscopic image display device of a multi view type having nine viewing areas will be described as an example. However, the present invention is not limited thereto, and the technical idea of the present invention can be applied to other forms and multi-view systems having more or less viewing areas.

3 and 4, the stereoscopic image display apparatus according to the present invention, a display panel 100 for displaying an image, and a planar image disposed on the display panel 100 is disposed on the display panel 100 Supplying a planar image signal or a stereoscopic image signal according to a control signal of the controller 200 to the slit barrier 10 to form a stereoscopic image by blocking or passing the selective signal and a plurality of subpixels formed on the display panel 100. The controller 200 may control the image signal generator 300 and the image signal generator 300 to implement a planar image mode or a three-dimensional image mode.

The slit barrier 10 according to the present invention consists of a slit 11 for passing light and a barrier 12 for blocking light. The slits 11 and the barrier 12 are alternately formed. The stereoscopic images 1, 2, 3, 4, 5, 6, 7, 8, and 9 formed on the display panel 100 are passed through or blocked by the slit 11 and the barrier 12, and thus, ①, ②, ③, It is distributed to the viewing zones of ④, ⑤, ⑥, ⑦, ⑧, ⑨. Thereby, the viewer accepts any one of the nine viewing areas (①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧, ⑨) as the left eye image, and any one adjacent to the viewing area input as the left eye image The image is taken as an image, and a stereoscopic image is realized by binocular dimensionality. That is, the viewer can watch three-dimensional images at various positions while changing viewing positions as nine viewing regions (①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧, ⑨) are secured. The slit barrier 10 may be a film or plate composed of the slit 11 and the barrier 12. In addition, the liquid crystal panel may include a stripe-shaped pixel in another method. When the liquid crystal panel is applied as the slit barrier 10, when each pixel is turned off, light is transmitted to function as the slit 11, and when each pixel is turned on, the light is blocked to block the barrier ( It performs the same function as 12).

The display panel 100 according to the present invention is a display device for implementing a planar image. In the exemplary embodiment of the present invention, a liquid crystal panel is described as an example of a display device for implementing a planar image. However, the present invention is not limited thereto, and the organic light emitting diode (OLED) and the plasma display panel (PDP) are not limited thereto. ), FED (Field Emission Display) and VFD (Vacuum Fluorescent Display) can also be applied.

Although not specifically illustrated, the display panel 100 according to the present invention includes a thin film transistor substrate on which a thin film transistor (TFT) is formed, a color filter substrate opposite to the thin film transistor substrate and provided with a color filter layer, and both substrates. It includes a liquid crystal layer located in. Such a liquid crystal panel is a device for displaying a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form according to image signal information. The liquid crystal panel is formed by using light emitted from a light source. To form an image.

In the display panel 100, a plurality of subpixels are repeatedly arranged in up, down, left, and right directions. Each subpixel is provided with a thin film transistor (TFT), and each subpixel is driven independently. The display panel 100 according to the present invention may be implemented in a planar image mode and a three dimensional image mode.

When the 3D image display device is set to the 2D image mode, the controller 200 sets three subpixels 110_R, 110_G, and 110_B to form one unit pixel P. FIG. The unit pixels P are repeatedly arranged up, down, left, and right, and receive the planar image signals of R, G, and B from the image signal generation unit 300 according to the control signal of the controller 200. Accordingly, a two-dimensional planar image is implemented as in the image realization method of a conventional liquid crystal display device.

Meanwhile, when the stereoscopic image display apparatus is set to the 3D image mode, the controller 200 sets the n subpixels to form the stereoscopic image pixel D. FIG. The stereoscopic image pixels D are repeatedly arranged up, down, left, and right, and supply different first to nth stereoscopic image signals 1 to n from the image signal generation unit 300 according to a control signal of the controller 200. Receive. For example, as shown in FIG. 6, nine subpixels may form one stereoscopic image pixel D, and the first to ninth stereoscopic image signals 1, 2, 3, 4, 5, 6, 7, 8, 9) are supplied respectively. As shown in Fig. 3, the nine subpixels have nine viewing zones (1, 2, 3, 4, 5, 6, 7, 8) in which three-dimensional images are designated by the slit barrier 10 described above. , ⑨ are calculated and arranged to be distributed. That is, the controller 200 sets the stereoscopic image pixel D by calculating that the stereoscopic image signal is not distributed to other viewing areas. Accordingly, the first through ninth stereoscopic image signals 1, 2, 3, 4, 5, 6, 7, 8, and 9 formed in the display panel 100 pass and are blocked by the slit barrier 10. It is distributed to the viewing zones of ①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧ and ⑨. Thereby, the viewer accepts any one of the nine viewing areas (①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧, ⑨) as the left eye image, and any one adjacent to the viewing area input as the left eye image The image is taken as an image, and a stereoscopic image is realized by binocular dimensionality.

The image signal generator 300 selects and supplies corresponding image data from the graphic source 350 according to the control signal generated by the control signal generator 220 of the controller 200. Here, the control signal is a signal for selecting image information to be supplied to each subpixel. The supplied image data is supplied to the corresponding subpixel according to the control signal of the controller 200. Here, the control signal is a signal for supplying the selected image data to the corresponding subpixel. The image data may be the above-described planar image signals of R, G, and B and the first to ninth stereoscopic image signals (1, 2, 3, 4, 5, 6, 7, 8, and 9). The graphic source 350 is provided with image data that can implement various images.

The controller 200 generates a control signal to properly implement a planar image and a stereoscopic image according to the mode signal input from the outside. The controller 200 according to the present invention includes a memory 210 and a control signal generator 220. The memory 210 is an arithmetic and storage element that calculates image data to be input to each subpixel a such that an image corresponding to a mode signal input from the outside is implemented. Based on the calculation, the control signal generator 220 generates a plurality of control signals, and supplies the generated control signals to the image signal generator 300 to implement a desired planar image or stereoscopic image.

Accordingly, the 3D image display device may implement a 2D planar image and a 3D stereoscopic image.

However, when a two-dimensional planar image is implemented, some of the planar image signals of R, G, and B are distributed like a stereoscopic image signal by the slit barrier 10, so that color separation of the planar image is separated. There is a problem that occurs.

In order to solve this problem, the control unit 200 according to the present invention R, G, B so that the planar image signal of R, G, B to be assigned to each unit pixel (P) is supplied to the adjacent unit pixel (P). Minimize color separation by redistributing the planar image signal.

Redistribution of planar image signals of R, G, and B proceeds according to the following criteria. First, subpixels to which the same stereoscopic image signals (1, 2, 3, 4, 5, 6, 7, 8, and 9) are applied to planar image signals of R, G, and B to be allocated to one unit pixel (P). To be distributed. That is, the planar image signals of R, G, and B to be allocated to the unit pixels P are separated and distributed to subpixels visible in the same viewing zone when the stereoscopic image mode is implemented.

A description with reference to FIG. 6 is as follows. When the plurality of unit pixels P are arranged as shown in FIG. 6, it is assumed that the unit pixels to which the planar image signals of R, G, and B are applied are the fifth unit pixels P5. The first to fourth and sixth to ninth unit pixels P1, P2, P3, P4, P6, P7, P8, and P9 surrounding the fifth unit pixel P5 become adjacent unit pixels. . In such a case, the planar image signals of R, G, and B to be applied to the fifth unit pixel P5 are divided into subpixels to which the same stereoscopic image signal is applied among adjacent unit pixels. That is, the planar video signals of R, G, and B are equally distributed to any one of the first through ninth stereoscopic video signals (1, 2, 3, 4, 5, 6, 7, 8, and 9). Specifically, the planar image signal of R is divided into subpixels to which the seventh stereoscopic image signal 7 is applied among the subpixels constituting the first unit pixel P1, and the planar image signal of G is the sixth unit pixel. The seventh stereoscopic image signal 7 is divided into subpixels to which the seventh stereoscopic image signal 7 is applied, and the planar image signal of B is the seventh stereoscopic image among the subpixels constituting the seventh unit pixel P7. The signal 7 is divided into subpixels to which it is applied. That is, even when the three subpixels constituting the fifth unit pixel P5 are driven in the stereoscopic image mode, even when the first, third, and fifth stereoscopic image signals 1, 3, and 5 are represented, the subpixels P5 are converted to the planar image mode. The seventh stereoscopic image signal 7 is divided among subpixels of adjacent unit pixels.

Herein, the range of adjacent unit pixels may be changed in various ways. That is, in the above-described example, unit pixels in a range of approximately four angles are defined as adjacent unit pixels, but adjacent unit pixels may be set in various ranges such as diagonal, vertical, left and right directions, and triangles. However, in order for the screen to be driven normally, the unit pixels that are too far should not be defined as adjacent pixels. In general, it is preferable to set the unit pixels to which the same or similar image data is applied as the adjacent unit pixels.

Second, the planar image signals of R, G, and B to be allocated to one unit pixel P are divided into subpixels to which the same planar image signal is applied. That is, the control unit 200 of the R, G, B plane image signal to be supplied to the adjacent unit pixels (P1, P2, P3, P4, P6, P7, P8, P9) is the sixth unit pixel The planar image signal of R of P6 is distributed to the subpixels to be supplied, and the planar image signal of G is distributed to the subpixels to which the planar image signal of G of the first unit pixel P1 is supplied, The planar image signal is generated such that the control signal is distributed to subpixels to which the planar image signal of B of the seventh unit pixel P7 is supplied. The generated control signal is supplied to the image signal generation unit 300, and the image signal generation unit 300 distributes the selected image data according to the control signal and supplies the same to the corresponding subpixel.

Hereinafter, a principle of minimizing color separation will be described.

Conventionally, when the planar image signals of R, G, and B are separated by the slit barrier 10, they are separated into subpixels to which different stereoscopic image signals are applied. As a result, even a flat image signal in the same unit pixel may be partially visible or invisible, and thus color separation or image quality may deteriorate.

However, in the present invention, color separation is minimized because it is controlled to be distributed to subpixels to which the same stereoscopic image signal is supplied. That is, even if the planar image signals of R, G, and B are separated by the slit barrier 10, color separation is minimized because the same stereoscopic image signals are applied to subpixels to which the same stereoscopic image signals are applied. That is, even though the planar image signals of R, G, and B are separated by the slit barrier 10, the viewer sees the planar image signals of R, G, and B separated in the same viewing area, thereby minimizing color separation.

In addition, conventionally, when the planar image signals of R, G, and B are separated by the slit barrier 10, color separation is also generated by being divided into subpixels to which different planar image signals are supplied.

However, in the present invention, color separation is minimized by controlling distribution to subpixels to which the same planar image signal is supplied.

As described above, according to the present invention, there is provided an image display device that can naturally implement a planar image without color separation when switching from a stereoscopic image to a planar image.

Claims (6)

A display panel in which unit pixels consisting of a plurality of subpixels are repeatedly arranged; An image signal generator for supplying a planar image signal or a stereoscopic image signal to each of the plurality of subpixels; When the planar image mode is set, the planar image signal consisting of R, G, and B is supplied to the unit pixel, and when the stereoscopic image mode is set, n subpixels are set as the stereoscopic image pixels, and the n A control unit for controlling the video signal generation unit to supply another stereoscopic video signal, The controller may be configured to supply the planar image signals of R, G, and B to be allocated to the unit pixels when the planar image mode is switched from the stereoscopic image mode to subpixels to which the same stereoscopic image signal is applied among adjacent unit pixels. Controlling the video signal generator; In the plurality of unit pixels, the first to ninth unit pixels are repeatedly arranged up, down, left, and right in units of 3x3, When the planar image signal of R, G, and B is applied to the fifth unit pixel surrounded by the first to fourth and sixth to ninth unit pixels, the controller controls the fifth unit pixel. The plane image signals of R, G, and B to be assigned to the image are supplied to subpixels to which the same stereoscopic image signal and the same planar image signal are applied among the first to fourth and sixth to ninth unit pixels. And a stereoscopic image display device controlling the signal generation unit. The method of claim 1, The control unit is configured to distribute the planar image signal of R among the planar image signals of R, G, and B supplied to the adjacent unit pixel to subpixels to which the planar image signal of R of the adjacent unit pixel is supplied, and the plane of G The video signal is distributed to subpixels to which the planar video signal of G of the adjacent unit pixel is supplied, and the video signal of B is distributed to the subpixel to which the planar video signal of B of the adjacent unit pixel is supplied. Stereoscopic display device characterized in that for controlling the generation unit. delete The method of claim 1, The unit pixel is the fifth unit pixel, And wherein the adjacent unit pixels are the first to fourth and sixth to ninth unit pixels. The method of claim 1, And the control unit controls the image signal generation unit so that the planar image signals of R, G, and B are distributed to subpixels to which the same planar image signal is applied. The method of claim 1, The unit pixel includes three subpixels to which the planar image signals of R, G, and B are respectively supplied. The stereoscopic pixel is composed of n subpixels arranged in succession. The stereoscopic image signal includes first to n th stereoscopic image signals supplied to the n subpixels, respectively. When the display panel is driven in the stereoscopic image mode, the three subpixels are allocated with the first, third, and fifth stereoscopic image signals of the first to nth stereoscopic image signals, respectively. Sub to which the first, third and fifth stereoscopic image signals of adjacent unit pixels are applied to the planar image signals of R, G, and B allocated to the three subpixels to be switched to the planar image mode in the stereoscopic image mode. And controlling the image signal generator to be supplied to the pixel.

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