KR102090603B1 - Display Apparatus For Displaying Three Dimensional Picture - Google Patents

Abstract

The present invention relates to a stereoscopic image display device, the image collection unit for collecting the image of the viewer; An image panel for dividing and outputting a left-eye image and a right-eye image constituting a stereoscopic image in vertical directions; And a first line through which light of the left-eye image incident from the image panel is transmitted in a first main transmission direction, and a second line through which light of the right-eye image incident from the image panel is transmitted in a second main transmission direction. An image segmentation panel in which the first and second lines are arranged side by side in the vertical direction; And a control unit determining the position of the viewer based on the viewer's video and changing the first and second main transmission directions of the video splitting panel as the viewer's position changes.

Description

Display Apparatus For Displaying Three Dimensional Picture}

The present invention relates to a display device, and more particularly, to a stereoscopic image display device capable of displaying a stereoscopic image.

The stereoscopic image display apparatus displays an image in three dimensions by using a perspective view when different image signals perceived by both eyes are synthesized.

As a method of realizing such a stereoscopic image, there are largely known a stereoscopic technique, a volumetric technique, and a holographic technique.

Among them, the binocular parallax method can be divided into an eyeglass type and an autostereoscopic type, and the autostereoscopic type has been actively studied in recent years.

The autostereotype can be divided into a barrier method using a barrier and a lens method using a lens.

1 is an exemplary view showing a relationship between a rear distance (b) and a viewing distance (d) of a lens in a conventional lens-type stereoscopic image display device, and FIG. 2 is a main transmission direction of a lens in a conventional lens-type stereoscopic image display device 3 is an exemplary view for explaining a method for varying the viewing angle, and FIG. 3 is an exemplary view for explaining a method in which the viewing area is changed in a conventional lens-type stereoscopic image display device.

As described above, the binocular parallax method may be divided into a glasses type and a glassesless type, and the glassesless type, which has been actively studied recently, may be divided into a barrier type and a lens type again.

Among them, the barrier method is a method in which a stereoscopic image is displayed by blocking or transmitting light according to a voltage application method, etc., and the lens method is a method in which a stereoscopic image is changed by changing a main transmission direction of a lens according to a voltage application method or the like. This is how it is displayed. 1 to 3, in particular, a lens type stereoscopic image display device is shown.

Conventional autostereoscopic 3D display devices have the following problems.

First, in a conventional autostereoscopic 3D display device, it is difficult to use image data (content) applied to a conventional spectacle stereoscopic display device as it is. The specific reason is as follows.

The left-eye image data and the right-eye image data constituting the image data (content) applied to the glasses-type (FPR) stereoscopic image display device, which is a main component of the stereoscopic image display device, are divided in the vertical direction of the image panel on which the image is output. It is done. However, the conventional autostereoscopic 3D display device divides image data in the left and right directions of the image panel.

Accordingly, when image data applied to a conventional spectacle stereoscopic image display device is applied to a conventional autostereoscopic stereoscopic image display device, half of the data is lost.

In addition, even when image data applied to a conventional autostereoscopic 3D display device is applied to a conventional glasses-free 3D display device, half of the data is lost.

That is, the conventional autostereoscopic 3D display device, unlike the glasses-type stereoscopic image display device, divides the image data in the left and right directions of the panel. Therefore, in the conventional autostereoscopic 3D display device, it is difficult to use image data applied to an already commercially available spectacle stereoscopic image display device, and image data for the autostereoscopic 3D display device must be newly produced.

Second, a high manufacturing cost is required to manufacture a conventional autostereoscopic 3D display device, and a complicated manufacturing process is also required. The specific reason is as follows.

That is, in a conventional autostereoscopic 3D display device such as a barrier type stereoscopic image display device and a lens type stereoscopic image display device, a barrier panel or a lens panel 60 must be added in addition to the panel 10 on which the image is displayed. , High manufacturing costs and complex manufacturing processes are required.

In particular, the lens-type stereoscopic image display device, as shown in FIGS. 1 to 3, separates information of left and right pixels in different directions by the anisotropic lens 32, and the lens 32 and the panel 10 The gap glass 20 should be provided to form the back distance between the two, and the two electrodes 31 and 34 should be provided for 2D and 3D variation. Therefore, the conventional lens type stereoscopic image display apparatus requires a high manufacturing cost and a complicated manufacturing process.

In particular, since the viewing distance (d) and the focal length (f) are determined according to the rear distance between the lens (32) and the panel (10), that is, the gap (Gap), the gap glass (20) as needed Since the etching of) is required, the manufacturing cost may be increased accordingly, and the manufacturing process may be more complicated.

Third, in the conventional autostereoscopic 3D display device, the viewing area is limited, and the viewing area can be changed only in the left-right direction of the video panel, but not in the front-rear direction of the video panel. The specific reason is as follows.

The lens-type stereoscopic image display device displays images by separating left and right image data in different directions according to the main transmission direction of the lens 32, and a voltage applied to the two electrodes 31 and 34 By this, a stereoscopic image (3D) or a 2D image (2D) may be implemented.

In addition, the viewing area of the conventional autostereoscopic 3D display device is limited. Therefore, the stereoscopic image may not be visible to the viewer depending on the position of the viewer. To solve this, a camera may be mounted on the stereoscopic image display device. When the viewer's position is identified through the camera, the viewable area may be changed by moving the position of the image data output to the video panel in the horizontal direction.

As described above, in the conventional autostereoscopic 3D display device, in order to change the viewable area, the image data must be moved in the horizontal direction on the image panel, so that the viewable area is discrete.

In addition, in the conventional autostereoscopic 3D display device, in order to change the viewing area, the image data must be moved in the horizontal direction of the image panel 10, as shown in FIG. 3, the viewing area is the It can be changed only in the left-right direction A of the lens panel 60. That is, in the conventional autostereoscopic 3D display device, the viewing area cannot be changed in the front-rear direction B of the lens panel 60. Therefore, the viewing area is bound to be limited.

Fourth, a conventional autostereoscopic 3D display device may be manufactured using a lens or barrier as described above. Among them, the conventional autostereoscopic 3D display device using a barrier has a problem that luminance is reduced when compared to a conventional autostereoscopic 3D display device using a lens.

The present invention is to solve the above-mentioned problems, the main output direction of the odd and even lines formed in the horizontal direction in the image division panel for dividing the image output from the image panel into a left-eye image and a right-eye image, It is a technical problem to provide a stereoscopic image display device that can be individually controlled.

A stereoscopic image display device according to the present invention for achieving the above-described technical problem includes: an image collecting unit for collecting an image of a viewer; An image panel for dividing and outputting a left-eye image and a right-eye image constituting a stereoscopic image in vertical directions; And a first line through which light of the left-eye image incident from the image panel is transmitted in a first main transmission direction, and a second line through which light of the right-eye image incident from the image panel is transmitted in a second main transmission direction, and wherein An image segmentation panel in which the first and second lines are arranged side by side in the vertical direction; And a control unit determining the position of the viewer based on the viewer's video and changing the first and second main transmission directions of the video splitting panel as the viewer's position changes.
The image segmentation panel is a first electrode that is disposed on the first line to which a first voltage is applied, a second electrode that is disposed on the second line, and which is applied a second voltage, and a first alignment layer on which the first alignment layer is disposed. Panel layer; A second image split panel layer on which a third electrode and a second alignment layer are disposed; And a third image including liquid crystals disposed between the first image division panel layer and the second image division panel layer and rotated in different directions between the first and second lines according to the first and second voltages. A partition panel layer is provided.
The first alignment layer is in contact with the liquid crystal, and includes a first alignment line corresponding to the first electrode and a second alignment line corresponding to the second electrode. The second alignment layer includes a third alignment line contacting the liquid crystal, a third alignment line corresponding to the first electrode, and a fourth alignment line corresponding to the second electrode.
The rubbing direction of the first alignment line is opposite to the rubbing direction of the second alignment line and the third alignment line. The rubbing direction of the second alignment line is opposite to the rubbing direction of the first alignment line and the fourth alignment line.
The control unit changes each of the first and second voltages to change the first and second main transmission directions of the image division panel.

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According to the stereoscopic image display device according to the present invention, the viewer's viewing angle can be improved.

In addition, in the stereoscopic image display device according to the present invention, since gap glass does not need to be formed, a process for etching the gap glass is not required. Also, a process for forming a lens is not required. Therefore, the manufacturing process of the stereoscopic image display device can be simplified.

In addition, according to the present invention, the viewing area can be continuously adjusted in the horizontal and vertical directions according to the voltage. Therefore, the viewer can watch the stereoscopic image at any position.

1 is an exemplary view showing a relationship between a rear distance (b) and a viewing distance (d) of a lens in a conventional lens-type stereoscopic image display device.
Figure 2 is an exemplary view for explaining a method of varying the main transmission direction of the lens in a conventional lens-type stereoscopic image display device.
3 is an exemplary view for explaining a method of changing a viewing area in a conventional lens-type stereoscopic image display device.
4 is an exemplary view showing the configuration of a stereoscopic image display device according to the present invention.
5 is an exemplary view showing a cross section of a panel of a stereoscopic image display device according to the present invention.
6 and 7 is an exemplary view showing a viewing angle for each line of the stereoscopic image display device according to the present invention.
8 is an exemplary view showing first to third electrodes applied to a stereoscopic image display device according to the present invention.
9 is an exemplary view showing a state of change of a viewing angle according to a change in a driving voltage of a 3D image in a 3D display device according to the present invention.
10 is an exemplary view showing a change state of a viewing area according to a change in a driving voltage of a 3D image in a 3D display device according to the present invention.
11 is an exemplary view for explaining the size of a pattern width for displaying a stereoscopic image at a position of a viewing area in the stereoscopic image display device according to the present invention.
12 is an exemplary view for explaining a method of driving a stereoscopic image display device according to the present invention.

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

4 is an exemplary view showing a configuration of a stereoscopic image display device according to the present invention, FIG. 5 is an exemplary view showing a cross section of a panel of the stereoscopic image display device according to the present invention, and FIGS. 6 and 7 are exemplary views It is an exemplary view showing a viewing angle for each line of a stereoscopic image display device, and FIG. 8 is an exemplary view showing first to third electrodes applied to the stereoscopic image display device according to the present invention.

The stereoscopic image display device according to the present invention, as shown in Figure 4, the left and right images constituting the stereoscopic image to the image panel 100 for output in the vertical direction, the first to transmit the left eye image A line and a second line that transmits the right eye image are formed side by side in the vertical direction, and the image division panel 600 into which liquid crystal is injected, the rotation direction of the liquid crystal is changed, so that the first line and the second Control unit (400, 700, 800) for controlling the main transmission direction of the two lines, gate driver (200) for applying a scan pulse to the gate line formed in the image panel (100) and the image panel (100) It comprises a data driver 300 for applying digital image data (RGB) to the formed data line.

First of all, the image panel 100 is for outputting a 3D image (hereinafter simply referred to as a 'stereoscopic image') or a 2D image, and may be a liquid crystal panel, an organic light emitting panel, a plasma display panel, a motion display panel, or the like. You can.

In the image panel 100, as shown in FIG. 5, the first image panel substrate 110 and the second image panel substrate 120 are bonded through a bonding process. An intermediate layer 130 is formed between the first image panel substrate 110 and the second image panel substrate 120.

The intermediate layer 130 may include different configurations according to the type of the stereoscopic image display device according to the present invention.

For example, when the stereoscopic image display device is a liquid crystal display (LCD), the intermediate layer 130 may include liquid crystal or the like. When the stereoscopic image display device is an organic light emitting diode (OLED), the intermediate layer 130 may include a fluorescent organic compound or the like. When the stereoscopic image display device is a plasma display panel (PDP), the intermediate layer 130 may include an inert gas or the like. When the display device is an electrophoretic display (EPD), the intermediate layer 130 may include an electrophoretic dispersion or the like. The first image panel substrate 110 and the second image panel substrate 120 may be made of glass, plastic, metal, or the like.

When the image panel 100 is a liquid crystal panel, the image panel 100 may be configured in a form in which a liquid crystal layer is formed between two glass substrates.

In this case, a plurality of data lines DL1 to DLd, a plurality of gate lines GL1 to GLd intersecting the data lines, and the data lines DL1 to the lower glass substrate of the image panel 100. DLd) and a plurality of thin film transistors (TFTs) formed in pixels formed for each crossing region of the gate lines GL1 to GLg, a plurality of pixel electrodes for charging the data voltage to the pixel, and the A storage capacitor (Cst) or the like for connecting the pixel electrode to maintain the voltage of the pixel is formed. That is, pixels are arranged in a matrix form by the crossing structure of the data lines DL1 to DLd and the gate lines GL1 to GLg.

A black matrix (BM), a color filter, and a common electrode are formed on the upper glass substrate GLS1 of the image panel 100. The common electrode is formed on the upper glass substrate GLS1 in a vertical electric field driving method such as TN (TwistedNematic) mode and VA (Vertical Alignment) mode. It is formed on the lower glass substrate GLS2 together with the pixel electrode in the electric field driving method.

Polarizing plates POL1 and POL2 are attached to each of the upper glass substrate GLS1 and the lower glass substrate GLS2 of the image panel 100, and an alignment layer for setting a pretilt angle of the liquid crystal is formed on an inner surface contacting the liquid crystal. .

A column spacer CS for maintaining a cell gap of the pixel may be formed between the upper glass substrate GLS1 and the lower glass substrate GLS2 of the image panel 100.

Meanwhile, a plurality of pixels displaying Red, Green, and Blue are formed on the image panel 100, and the left eye displaying a left eye image in order to display a stereoscopic image by interacting with the image division panel 600. The right-eye pixel displaying the pixel and the right-eye image is formed by being divided in the vertical direction of the image panel 100.

However, when a two-dimensional image is output through the image panel 100, it is not necessary to distinguish the left-eye pixel and the right-eye pixel as described above.

Next, the gate driver 200 shifts the gate start pulse (GSP) transmitted from the timing controller 400 constituting the control unit according to a gate shift clock (GSC), sequentially. The scan pulses having the gate-on voltage Von are supplied to the gate lines GL1 to GLg. In addition, the gate driver 200 supplies the gate-off voltage Voff to the gate lines GL1 to GLn during the remaining period when the scan pulse of the gate-on voltage Von is not supplied.

The gate driver 200 is formed to be independent of the image panel 100, and may be configured in a form that can be electrically connected to the panel in various ways, but the gate-in panel mounted in the image panel 100 (Gate In Panel: GIP) method. In this case, the gate control signal for controlling the gate driver 200 may be a start signal (VST) and a gate clock (GCLK).

Next, the data driver 300 converts the image data input from the timing controller 400 to an analog data voltage, and converts the data voltage for one horizontal line for every horizontal period during which a scan signal is supplied to the gate line. To the data lines. That is, the data driver 300 converts image data into a data voltage using gamma voltages supplied from a gamma voltage generator (not shown), and outputs the image data to the data line.

That is, the data driver 300 shifts a source start pulse (SSP) transmitted from the timing controller 400 according to a source shift clock (SSC) to generate a sampling signal. In addition, the data driver 300 latches the image data RGB input according to the source shift clock SSC according to a sampling signal, and then responds to a source output enable (SOE) signal in horizontal line units. To supply.

To this end, the data driver 300 may include a shift register unit, a latch unit, a digital-to-analog conversion unit, and an output buffer.

The shift register unit outputs a sampling signal using data control signals (SSC, SSP, etc.) received from the timing controller 400.

The latch unit latches the digital image data Data sequentially received from the timing controller 400, and simultaneously outputs the digital image data to the digital-to-analog converter (DAC).

The digital-to-analog converter converts and outputs the image data transmitted from the latch to a positive or negative data voltage at the same time. That is, the digital-to-analog converter converts the image data according to the polarity control signal (POL) transmitted from the timing controller 400 by using the gamma voltage supplied from the gamma voltage generator (not shown). It is converted to a data voltage of polarity or negative polarity and output to the data lines.

The output buffer is the data line (DL) of the panel according to the source output enable signal (SOE) transmitted from the timing controller 400, the positive or negative data voltage transmitted from the digital analog converter. ).

Next, the control unit (400, 700, 800), by changing the rotation direction of the liquid crystal, to control the primary transmission direction of the first line and the second line, the timing controller 400, power supply unit 800 ) And an image collection unit 700.

First, the image collection unit 700 performs a function of collecting an image of a viewer. That is, the image collecting unit 700 is built in the stereoscopic image display device according to the present invention, and is for collecting an image of a viewer existing outside the stereoscopic image display device, the collected image of the viewer is the timing controller 400.

The image collected by the image collection unit 700 is transmitted to the timing controller 400 and analyzed, whereby the viewer's location coordinates can be extracted.

A camera may be used as the image collection unit 700, but an infrared sensor capable of determining a location using infrared rays may also be used.

Second, the power supply unit 800 applies a first voltage VL to the first electrode corresponding to the first line, and applies a second voltage VR to the second electrode corresponding to the second line. In addition, it performs a function of applying a third voltage (V) to the first electrode and a third electrode disposed to face the second electrode.

That is, the power supply unit 800 changes the first voltage VL and the second voltage VR under the control of the timing controller 400, and outputs the first voltage and the second electrode to the first electrode and the second electrode. To perform the function.

The third voltage V is a voltage applied to the first electrode and the third electrode facing the second electrode, and has a constant value.

Third, the timing controller 400 analyzes the image to analyze the position of the viewer, and according to the analysis result, controls the power supply 800 to at least either the first voltage or the second voltage It performs the function of changing one.

In addition to the above functions, the timing controller 400 uses the vertical and horizontal synchronization signals (Vsync, Hsync), data enable (DE), and dot clock (DCLK) input synchronization signals from external systems. A data control signal DCS for controlling the 300 and a gate control signal GCS for controlling the gate driver 200 are generated. In addition, the timing controller 400 rearranges the image data input from the external system and outputs it to the data driver 300.

Here, the data control signal DCS includes a source shift clock SSC, a source start pulse SSP, a polarity control signal POL, and a source output enable signal SOE.

In addition, the gate control signal GCS may include a gate start pulse GSP, a gate shift clock GSC, a gate output enable signal GOE, or the like according to the configuration of the gate driver, or start as described above. It may include a signal (VST) and the gate clock (GCLK).

In addition, the timing controller 400 may generate a power supply control signal for controlling the power supply 800 and transmit it to the power supply 800.

That is, the timing controller 400 analyzes the image collected from the image collection unit 700 to analyze the position of the viewer, and according to the analysis result, at least either the first voltage or the second voltage For changing one, a power supply control signal may be generated and transmitted to the power supply 800.

Here, in the method for analyzing the location of the viewer by analyzing the image collected from the image collection unit 700 by the timing controller 400, various methods currently used to analyze the location of the viewer can be applied. You can.

In order to perform the functions as described above, the timing controller 400 includes a receiving unit for receiving input data and timing signals from the external system, a control signal generating unit for generating various control signals, A data alignment unit for rearranging the input image data to output the rearranged image data (Data), analyzes the image transmitted from the image collection unit (700), analyzes the position of the viewer to analyze the power supply control signal It includes an analysis unit for generating and an output unit for outputting the control signals and the image data.

The timing controller 400 rearranges the input image data input from the external system according to the structure and characteristics of the image panel 100, and reorders the rearranged image data to the data driver 300. send. This function can be executed in the data alignment unit.

The timing controller 400 controls the data driver using timing signals transmitted from the external system, that is, a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), and a data enable signal (DE). To generate the data control signal (DCS) and the gate control signal (GCS) for controlling the panel embedded gate driver (200), and transmits the control signals to the data driver and the panel embedded gate driver (200) Perform a function. Such a function may be executed in the control signal generator.

Finally, in the image split panel 600, a first line for transmitting the left eye image output from the image panel 100 and a second line for transmitting the right eye image are formed side by side in the vertical direction. Liquid crystal is injected. The image segmentation panel 600 is for dividing the left and right eye images by radiating the light emitted from the image panel 100, so that the viewer can recognize the stereoscopic image in the viewable area, as shown in FIG. Likewise, it is disposed on the top of the image panel 100.

As shown in FIG. 5, the image segmentation panel 600 includes a first electrode 612b corresponding to the first line and a second electrode 612a corresponding to the second line. 1 image split panel layer 610, a second image split panel layer 620 on which a third electrode 622 is formed, and the first image split panel layer 610 and the second image split panel layer 620 And a third image segmentation panel layer 630 made of the liquid crystal injected between them. Hereinafter, for convenience of description, the first line means a line outputting the left-eye image L, as shown in FIG. 6 (d), and the second line is shown in FIG. 7 (d). As shown in, it means a line outputting the right-eye image R. The first line is formed parallel to a first horizontal line for outputting a left eye image among the image panels 100, and the second line is a second horizontal line for outputting a right eye image among the image panels 200. Are formed side by side. The first line and the second line are formed alternately from the upper direction to the lower direction of the image division panel 600. That is, a plurality of the first line and the second line are formed in a horizontal direction of the image division panel 600.

First, the first image split panel layer 610 includes a transparent first base substrate 611, the first electrode 612b formed on the first base substrate 611, and the second electrode 612a. It includes a first electrode layer and a first alignment layer 613 formed on the first electrode layer to contact the liquid crystal.

Here, the rubbing direction of a first alignment layer corresponding to the first electrode 612b among the first alignment layers 613 and rubbing of a second alignment layer corresponding to the second electrode 612a among the first alignment layers The directions are formed in opposite directions to each other.

In addition, the first electrode 612b and the second electrode 612a are formed in the horizontal direction of the image segmentation panel 600, as shown in FIG. 8 (b), and the first electrode ( 612b) and the second electrode 612a are alternately formed.

Although not clearly indicated on the drawing, the first electrode 612b and the second electrode 612a are spaced apart from each other.

Second, the second image split panel layer 620 includes a second electrode layer and a second electrode layer including a transparent second base substrate 621 and the third electrode 622 formed on the second base substrate 621. A second alignment layer 623 is formed on the two electrode layer 622 and contacts the liquid crystal. Since the third electrode 622 is formed in a plate shape on the second image segmentation panel layer 620, as shown in FIG. 8 (a), the third electrode 622 is the It becomes the second electrode layer.

Here, a rubbing direction of a third alignment layer corresponding to the first electrode 612b among the second alignment layers 623 and a fourth alignment layer corresponding to the second electrode 612a among the second alignment layers 623 The rubbing directions of the lines are formed in opposite directions.

That is, the alignment layer illustrated in FIGS. 6D and 7D shows a plane of the second alignment layer 623 formed on the second image segmentation panel layer 620, in particular , In the second alignment layer 623 illustrated in FIG. 6D, a third alignment layer corresponding to the first electrode 612b is illustrated, and the second alignment layer illustrated in FIG. 7D is illustrated. In 623, a fourth alignment layer line corresponding to the second electrode 612a is shown.

The third alignment layer and the fourth alignment layer are alternately formed on the second base substrate 6121 to form the second alignment layer 623. However, in order to express that the rubbing direction of the third alignment layer shown in FIG. 6 (d) is different from the rubbing direction of the fourth alignment layer shown in FIG. 7 (d), the third alignment layer is formed. And the fourth alignment layer are individually illustrated in FIGS. 6 and 7.

On the other hand, although not shown in the drawing, the rubbing direction of the first alignment layer formed in the first alignment layer 613 and the rubbing direction of the second alignment layer are also shown in FIGS. 6 (d) and 7 ( Like the rubbing direction of the third alignment layer shown in d) and the rubbing direction of the fourth alignment layer, they are formed in opposite directions.

Herein, the first alignment layer and the third alignment layer correspond to the first electrode 612b or the first line, and the first image division panel layer 610 and the second image division panel layer ( 620) are formed to face each other. In this case, the rubbing direction of the first alignment layer and the rubbing direction of the third alignment layer may be formed in opposite directions as illustrated in FIG. 6B.

That is, the rubbing direction of the first alignment layer 613 formed in the first alignment layer 613 may be the rubbing direction of the second alignment layer formed in the first alignment layer 613 and the second alignment layer 623. It is opposite to the rubbing direction of the third alignment layer formed on the line.

Also, the second alignment layer and the fourth alignment layer correspond to the second electrode 612a or the second line, and the first image division panel layer 610 and the second image division panel layer ( 620) are formed to face each other. In this case, the rubbing direction of the second alignment layer and the rubbing direction of the fourth alignment layer may be formed in opposite directions as illustrated in FIG. 6B.

That is, the rubbing direction of the second alignment layer formed in the first alignment layer 613 is the rubbing direction of the first alignment layer formed in the first alignment layer 613 and the second alignment layer 623 It is opposite to the rubbing direction of the fourth alignment layer formed in the line.

In more detail, the rubbing directions of the first alignment layer and the second alignment layer formed in the first image division panel layer 610 in parallel with each other are shown in FIGS. 6 (d) and 7 ( It is formed in opposite directions to each other as shown in d). Here, the first alignment layer corresponds to the first electrode 612b or the first line, and the second alignment layer corresponds to the second electrode 612a or the second line. In addition, in the second image division panel layer 620, the rubbing directions of the third alignment layer and the fourth alignment layer formed in parallel to each other are shown in FIGS. 6 (d) and 7 (d). As shown, they are formed in opposite directions to each other. Here, the third alignment layer corresponds to the first electrode 612b or the first line, and the fourth alignment layer corresponds to the second electrode 612a or the second line.

However, the first alignment layer and the third alignment layer, which are formed to correspond to the first electrode 612b or the first line, are spaced apart from each other with the third image division panel layer 630 therebetween. As shown in Figure 6 (b) and Figure 7 (b), the rubbing direction is also formed in reverse. In addition, the second alignment layer and the fourth alignment layer, which are formed to correspond to the second electrode 612a or the second line, are spaced apart from each other with the third image division panel layer 630 therebetween. As shown in Figure 6 (b) and Figure 7 (b), the rubbing direction is also formed in reverse.

As described above, in the first image segmentation panel layer 610 or the second image segmentation panel layer 620, the rubbing direction of the alignment layer corresponding to the first line among the alignment layers contacting the liquid crystal and the The rubbing direction of the alignment layer corresponding to the second line is formed differently.

The first image segmentation panel layer 610 includes a first electrode 612b corresponding to the first line and a second electrode corresponding to the second line (as illustrated in FIG. 8B). 612a) is formed, and a first voltage is applied to the first electrode and a second voltage is applied to the second electrode by the control unit.

That is, the timing controller 400 constituting the control unit generates the control signal of the power supply unit and transmits it to the power supply unit 800 according to the position of the viewer analyzed through the image collection unit 700. The power supply unit 800 varies at least one of the first voltage and the second voltage according to the control signal of the power supply unit, and supplies it to the first electrode layer 612.

Third, the third image segmentation panel layer 630 is composed of the liquid crystal injected between the first image segmentation panel layer 610 and the second image segmentation panel layer 620. The liquid crystal is driven for each of the first line and the second line.

For example, as shown in (d) of FIG. 6, the first image segmentation panel layer 610 is formed to overlap the third alignment layer line formed to correspond to the first line. When the first voltage is supplied to the first electrode 612b and the third voltage is supplied to the third electrode 622, the liquid crystal disposed to correspond to the first electrode 612b is shown in FIG. 6. As shown in (b), the image split panel 600 rotates in the left direction. Accordingly, the left eye image that has passed through the third image division panel layer 630 is transmitted through the left direction of the image division panel 600, as shown in FIGS. 6A to 6C, and output. do.

Here, in Figure 6 (a) B-B 'represents the polarization direction of the upper polarizing film (Front POL) and the lower polarizing film (Rear POL) of the image split panel 600, A is the rotation direction of the liquid crystal Represents, X represents the viewing angle, and Y represents black.

In addition, as shown in (d) of FIG. 7, the second formed on the first image segmentation panel layer 610 overlaps with the fourth alignment layer formed on the second line. When the second voltage is supplied to the electrode 612a and the third voltage is supplied to the third electrode 622, the liquid crystal disposed to correspond to the second electrode 612a is shown in FIG. ), It rotates in the right direction of the image segmentation panel 600. Accordingly, the right-eye image that has passed through the third image division panel layer 630 is transmitted through the right direction of the image division panel 600, as shown in FIGS. 7A to 7C, and is output. do.

Here, in FIG. 7 (a), D-D 'denotes a polarization direction of an upper polarization film and a lower polarization film of the image splitting panel, C denotes a rotation direction of liquid crystal, X' denotes a viewing angle, and Y 'Represents black.

Hereinafter, a method of driving a stereoscopic image display device according to the present invention will be described with reference to FIGS. 4 to 12.

9 is an exemplary view showing a state in which a viewing angle is changed according to a change in a driving voltage of a 3D image in a 3D display device according to the present invention, and FIG. 10 is a view showing a change in a 3D driving voltage in a 3D display device according to the present invention An exemplary view showing a change state of the viewable area, and FIG. 11 is an exemplary view for explaining the size of a pattern width for displaying a stereoscopic image at the position of the viewable area in the stereoscopic image display device according to the present invention, Is an exemplary view for explaining a method of driving a stereoscopic image display device according to the present invention.

The method for driving a stereoscopic image display apparatus according to the present invention is a method of driving the image panel 100 to classify and output the left-eye image and the right-eye image constituting the stereoscopic image in the vertical direction, and transmitting the left-eye image. One line and the second line for transmitting the right eye image are formed side by side in the vertical direction, and the stereoscopic image driving voltage is applied to the image division panel 600 into which the liquid crystal is injected, so that the left eye image and Transmitting the right-eye image in different directions, collecting the viewer's image, analyzing the position of the viewer, and changing the rotation direction of the liquid crystal according to the analysis result, the first line and And changing a main transmission direction of the second line to change a viewing area in which the stereoscopic image is viewed.

First, in the step of dividing and outputting the left-eye image and the right-eye image constituting the stereoscopic image in the vertical direction, the currently used left-eye image and right-eye image output method may be applied as it is.

That is, the timing controller 400 generates left eye image data corresponding to the left eye image and right eye image data corresponding to the right eye image and transmits it to the data driver 300. The data driver 300 outputs the right-eye image data or the left-eye image data to pixels formed in one horizontal line while the scan signal is applied to the gate line.

Second, in the step of transmitting the stereoscopic image driving voltage and transmitting the left-eye image and the right-eye image in different directions, the timing controller 400 supplies the power supply control signal to the power supply 800, The power supply unit 800, the first voltage, the second voltage and the third voltage according to the control signal of the power supply unit, the first electrode 612b, the second electrode 612a and the third electrode 622.

By the voltages, the left-eye image and the right-eye image are transmitted in different directions, and as shown in FIG. 10, the left-eye image is input to the viewer's left-eye, and the right-eye image is input to the viewer's right-eye. Accordingly, the viewer can feel the stereoscopic image.

If the viewer wants to view a two-dimensional image, the first voltage to the third voltage are supplied to the first electrode to the third electrode so that the images are not refracted.

That is, according to the first voltage to the third voltage, the viewer may watch a two-dimensional image, or a three-dimensional image.

Third, in the step of collecting the viewer's video and analyzing the viewer's position, a method currently used to track the viewer's position may be applied as described above.

For example, as shown in FIG. 12, when an infrared sensor is used as the image collection unit 700, a plurality of infrared sensors are arranged at the top or bottom of a case forming an appearance of a stereoscopic image display device according to an angle of view. And the like.

Here, the coordinate system for determining the position of the viewer, as shown in Figure 12, may be formed of an N by M coordinate system. Here, the N by M coordinate system may be determined according to the resolution of the infrared sensor or the camera, and is preferably formed to distinguish at least 10 units of the viewing zone.

The timing controller 400 scans the image collection unit 700 in a left-to-right or right-to-left direction of the stereoscopic image display device, thereby allowing a viewer in front of the stereoscopic image display device as shown in FIG. 12. The width information (W_person) (X-coordinate) of can be found, and the distance information (D_person) (Y-coordinate) of the viewer can be obtained by analyzing the infrared reflection time.

The timing controller 400 may obtain the position coordinates of the viewer by comparing the width information and the distance information with information previously stored in a lookup table of the timing controller 400.

That is, since both the position coordinates according to the viewer's width information and distance information are recorded in the look-up table, the timing controller 400 sets the analyzed position information corresponding to the width information and the distance information to the look-up table. Can be extracted from

In addition to the methods described above, using various methods, the timing controller 400 may obtain the position coordinates of the viewer.

Fourth, in the step of changing the viewing area where the stereoscopic image is displayed, the selected first voltage and the second voltage are the first electrode 612b and the second electrode 612a according to the location coordinates. Is authorized.

That is, the timing controller 400, when the position coordinates are analyzed, in order to enable the position coordinates to be viewed, the first voltage and the second voltage are stored in another lookup table that is already stored. To extract. In the another look-up table, the first voltage and the second voltage corresponding to the position coordinates are recorded. Therefore, the timing controller 400 extracts the first voltage and the second voltage corresponding to the position coordinates extracted through the analysis process.

The timing controller 400 generates a power supply control signal to cause the power supply 800 to supply the first voltage and the second voltage to the first electrode and the second electrode, so that the power supply 800 ).

The power supply unit 800 supplies the first voltage and the second voltage to the first electrode and the second electrode according to the control signal of the power supply unit. In this case, the third voltage is also supplied to the third electrode.

According to the magnitude of the first voltage VL, as shown in FIG. 9B, the main transmission direction of the left eye image output from the first line corresponding to the first electrode 612b is changed. Can be. For example, as the size of the first voltage VL increases, that is, from V0 to V4, the viewing angle of the left eye image may be wider in the left direction.

In addition, according to the magnitude of the second voltage VR, as shown in FIG. 9 (a), the main transmission direction of the right-eye image output from the second line corresponding to the second electrode 612a. This can be changed. For example, as the size of the second voltage VR increases, that is, from V0 to V4, the viewing angle of the right-eye image may be wider in the right direction.

According to the first voltage and the second voltage, as the main transmission direction of the left-eye image and the right-eye image is changed, a viewable area capable of viewing a stereoscopic image may be variously changed as illustrated in FIG. 10. have.

That is, as shown in (a) and (b) of FIG. 10, the viewable area may be changed in the vertical direction of the image panel 100 by the first voltage and the second voltage. For example, it can be seen that the distance Y of the viewable area shown in FIG. 10B is greater than the distance X of the viewable area shown in FIG. 10A.

In addition, as shown in (a) and (c) of FIG. 10, the viewable area may be varied in a direction parallel to the image panel 100 by the first voltage and the second voltage. For example, it can be seen that the viewable area shown in FIG. 10 (c) is moved to the left from the center position of the image panel 100, compared to the viewable area shown in FIG. 10 (a). You can.

That is, in the step of changing the viewing area by changing the rotation direction of the liquid crystal, the first voltage corresponding to the first line is applied to the first electrode according to the analysis result, and the second A second voltage is applied to the second electrode corresponding to the line, and a third voltage is applied to the first electrode and the third electrode disposed to face the second electrode, so that the liquid crystal corresponding to the first line is The rotation direction and the rotation direction of the liquid crystal corresponding to the second line are being changed.

On the other hand, Figure 11 is for explaining the size of the pattern width for displaying a stereoscopic image at the position of the viewing area in the stereoscopic image display device according to the present invention, the left eye image output from the first line in the viewing area , The width P1 of the pattern for all the right-eye images output from the second line may be displayed as shown in [Equation 1] below.

In Equation 1, p denotes a pitch between pixel lines, pl denotes a pitch between the electrodes, d denotes a distance between the electrodes and the pixels, and D denotes Shows the distance between the viewing area and the image segmentation panel 600.

Those skilled in the art to which the present invention pertains will appreciate that the present invention may be implemented in other specific forms without changing its technical spirit or essential characteristics. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and it should be interpreted that all changes or modifications derived from the meaning and scope of the claims and equivalent concepts are included in the scope of the present invention. do.

100: panel 200: gate driver
300: data driver 400: timing control
600: video split panel

Claims (10)

An image collection unit that collects an image of a viewer;
An image panel for dividing and outputting a left-eye image and a right-eye image constituting a stereoscopic image in vertical directions;
And a first line through which light of the left-eye image incident from the image panel is transmitted in a first main transmission direction, and a second line through which light of the right-eye image incident from the image panel is transmitted in a second main transmission direction. An image segmentation panel in which the first and second lines are arranged side by side in the vertical direction; And
And a controller configured to determine the position of the viewer based on the viewer's video, and to change the first and second main transmission directions of the video splitting panel as the viewer's position changes.
The video segmentation panel,
A first image split panel layer on the first line, a first electrode to which a first voltage is applied, a second electrode on the second line to which a second voltage is applied, and a first alignment layer;
A second image split panel layer on which a third electrode and a second alignment layer are disposed; And
A third image segmentation including liquid crystals disposed between the first image segmentation panel layer and the second image segmentation panel layer and rotated in different directions between the first and second lines according to the first and second voltages. A panel layer,
The first alignment layer contacts the liquid crystal, and includes a first alignment line corresponding to the first electrode and a second alignment line corresponding to the second electrode,
The second alignment layer is in contact with the liquid crystal, and includes a third alignment line corresponding to the first electrode and a fourth alignment line corresponding to the second electrode,
The rubbing direction of the first alignment line is opposite to the rubbing direction of the second alignment line and the third alignment line,
The rubbing direction of the second alignment line is opposite to the rubbing direction of the first alignment line and the fourth alignment line,
The control unit is a three-dimensional image display device for changing the first and second main transmission direction of the image division panel by varying each of the first and second voltage. delete delete delete delete delete According to claim 1,
The control unit,
A power supply unit that applies the first voltage to the first electrode, applies a second voltage to the second electrode, and applies a constant voltage to the third electrode; And
And a timing controller that controls the power supply to change each of the first voltage or the second voltage based on a result of analyzing the viewer's image and analyzing the viewer's location. According to claim 1,
The third electrode is a stereoscopic image display device, characterized in that formed in a plate shape on the second image segmentation panel layer. delete delete

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