KR20160024283A - Lenticular lens type stereoscopic 3d display device - Google Patents

Abstract

According to the present invention, a lenticular lens type 3D image display device horizontally partitions a sub-pixel by n and selectively inserts black data to some of the n-partitioned sub-pixels, which generate 3D cross talk in accordance with a location of a viewer. Therefore, the device improves 3D cross talk in a multi-view without lowering of resolution so as to improve an image quality level.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image display device using a lenticular lens,

The present invention relates to a stereoscopic image display apparatus, and more particularly, to a stereoscopic image display apparatus using a lenticular lens system.

A simple definition of 3D display is "the total system that artificially reproduces the 3D screen".

Here, the system includes a software technique that can be viewed in 3D and a hardware that actually realizes the content created by the software technique in 3D. The reason for incorporating the software area is that the 3D display hardware requires separately configured contents in a separate software manner for each stereoscopic implementation method.

In addition, a virtual 3D display (hereinafter, referred to as a stereoscopic image display device) is a type of stereoscopic image display device that uses a binocular disparity, which is caused by a distance of about 65 mm It is the totality of the system that allows you to literally feel the stereoscopic effect. In other words, our eyes see a different image (a little bit of space between the left and the right, respectively) even if we look at the same things because of binocular parallax. When these two images are transmitted to the brain through the retina, Dimensional stereoscopic image display apparatus is a stereoscopic image display apparatus in which two left and right images are simultaneously displayed on a 2D display apparatus and sent to each eye by using a stereoscopic image display apparatus .

In order to display images of two channels in one screen in such a stereoscopic image display device, in most cases, one line is changed one line at a time horizontally or vertically in one screen and outputted one channel at a time. At the same time, when images of two channels are output from one display device, in the case of a non-eyeglass system due to the hardware structure, the right image enters the right eye as it is, and the left image enters only the left eye. In addition, in the case of wearing the glasses, the right image is visually obscured by the special glasses suitable for each method, and the left image is obscured by the right eye so that the right eye can not be seen.

As mentioned above, the binocular parallax due to the interval between the two eyes is the most important factor for the person to feel the three-dimensional feeling and the depth feeling, but there is also a deep relationship with the psychological and memory factors. Accordingly, Dimensional image information, a volumetric type, a holographic type, and a stereoscopic type based on whether the three-dimensional image information can be provided.

The volume expression method is a method for making the depth direction perceive by the psychological factors and the suction effect, and is a three-dimensional computer graphic which displays the perspective method, overlapping, shading, contrast, and movement by calculation, So-called IMAX films, which give rise to an optical illusion that it is sucked into the space by providing a large screen.

The three-dimensional representation known as the most complete stereoscopic imaging technique can be represented by laser light reproduction holography or white light reproduction holography.

As described above, when an association image of a plane including parallax information is displayed on the left and right sides of a human being present at a distance of about 65 mm as described above, the brain expresses three-dimensional images using the physiological factors of both eyes. And the ability to generate spatial information before and after the display surface in the process of fusing them to sense a stereoscopic effect, that is, stereography. Such a three-dimensional expression system is largely classified into a system in which glasses are worn and a system in which glasses are not worn.

As a typical known method of not wearing glasses, there is a lenticular lens method and a parallax barrier method in which a lenticular lens plate vertically arranging a cylindrical lens is installed in front of the display panel.

FIG. 1 is a view for explaining the concept of a general lenticular lens type stereoscopic image display apparatus, and shows a relation between a rear distance b and a viewing distance d of a lens for reference.

Referring to FIG. 1, a typical lenticular lens type stereoscopic image display device includes a liquid crystal panel 10 filled with liquid crystal between upper and lower substrates, a liquid crystal panel 10 disposed therebetween, And a lenticular lens plate 20 positioned on the front surface of the liquid crystal panel 10 for realizing a backlight unit (not shown) and a stereoscopic image.

The lenticular lens plate 20 is formed by forming a material layer having a convex lens shape on its upper surface on a flat substrate.

The lenticular lens plate 20 serves to divide the left and right eye images. In the appropriate 3D viewing distance d from the lenticular lens plate 20, images corresponding to the left and right eyes in the left and right eyes are normally A view diamond (a regular time zone) is formed.

Accordingly, the image image transmitted through the liquid crystal panel 10 passes through the lenticular lens plate 20, and another group of images enters the left and right eyes of the final viewer, so that a three-dimensional stereoscopic image can be felt.

The liquid crystal panel 10 and the lenticular lens plate 20 are supported by an instrument (not shown), so that the liquid crystal panel 10 and the lenticular lens plate 20 are spaced apart from each other by a predetermined distance (rear distance; b) are spaced apart.

In this case, the proper viewing distance d is designed to be about 30 to 300 cm according to the actual application model by the lens design formula [1 / d + 1 / b = 1 / f] It is very small as 0.2 ~ 3mm. Therefore, the actual lens back surface distance b is substantially similar to the lens focal length f on the incident surface side. Therefore, in a typical stereoscopic image display apparatus using a lenticular lens system, a gap glass 26 is inserted to keep the rear distance b constant.

On the other hand, in a stereoscopic image display apparatus using a lenticular lens system, a multi view scheme is formed according to a view map designed in the beginning, so viewers can view a 3D image when entering a predetermined view area have.

In the ideal case, only the information of the view is visible in the view-diamond (for example, only the L-view is visible in the left eye, and the R-view is not visible); in the slanted structure, Since the pitch intervals do not exactly match, you can actually see two views at a glance. That is, in the actual case, the R-view can be seen in addition to the L-view in the left eye, resulting in a 3D cross talk.

This problem is due to the fact that 3D crosstalk occurs in different pixels depending on the location of viewers, so it is not possible to take countermeasures until now.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a stereoscopic image display apparatus of a lenticular lens system capable of improving 3D cross talk generated in valleys of a slanted lenticular lens The purpose is to provide.

Other objects and features of the present invention will be described in the following description of the invention and the claims.

According to an aspect of the present invention, there is provided a stereoscopic image display apparatus including a display panel, a lenticular lens including a plurality of lenticular lenses arranged at an angle to the front of the display panel, And a timing controller for selectively inserting black data into a portion of the sub-pixels that cause the 3D crosstalk.

At this time, the display panel may be arranged such that each of the m sub-pixels is divided into n (n = 2, 3, ...) in the horizontal direction.

The timing controller may selectively insert black data into a subset of the sub-pixels causing the 3D crosstalk according to the position of the viewer among the n subdivided sub-pixels. That is, the timing controller applies the same image data signal to the same sub-pixels that do not cause 3D crosstalk among the n divided sub-pixels, and selectively inserts black data into the sub-pixels causing the 3D crosstalk .

The timing controller includes a receiver for receiving image data and various timing signals, a control signal generator for generating and outputting a control signal using the timing signal transmitted from the receiver, and a controller for arranging the image data transmitted from the receiver, A position determination unit for extracting position coordinates of a viewer using the image received through the image collection unit, a position determination unit for determining a position of the viewer by using the position coordinates of the viewer and the view- Pixels in the sub-pixels divided into n sub-pixels according to the determination result, and a control unit for selectively inserting the black data into the sub- And a look-up table for storing the view-map.

According to another aspect of the present invention, there is provided a stereoscopic image display apparatus using a lenticular lens system, including a display panel in which a plurality of sub-pixels are horizontally divided into two parts, And a timing controller for selectively inserting black data into a part of the sub-pixels passing through the lenticular lens of the lenticular lens among the two divided sub-pixels.

As described above, the stereoscopic image display apparatus of the lenticular lens system according to the present invention is a stereoscopic image display apparatus in which a sub-pixel is divided into n in the horizontal direction and selectively added to a part of the n divided sub-pixels causing 3D crosstalk according to the position of the viewer And the 3D crosstalk in the multi view is improved without degrading the resolution by inserting black data.

Thereby providing an effect of improving image quality.

1 is a view for explaining a concept of a stereoscopic image display apparatus using a general lenticular lens system.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a stereoscopic image display apparatus.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a stereoscopic image display device, and more particularly, to a stereoscopic image display device using a lenticular lens system.
4 is a perspective view schematically showing a stereoscopic image display apparatus using a lenticular lens system according to the present invention.
5 is a diagram illustrating a pixel structure of a stereoscopic image display apparatus using a lenticular lens system according to a first embodiment of the present invention.
FIGS. 6A and 6B illustrate first through fourth view images shown in a first view area; FIG.
FIG. 7 is an exemplary view showing a pixel structure when viewed from the side of a stereoscopic image display apparatus according to a first embodiment of the present invention; FIG.
FIGS. 8A and 8B illustrate first through fourth view images shown in side views; FIG.
FIG. 9 is a view illustrating a pixel structure of a stereoscopic image display device using a lenticular lens system according to a second embodiment of the present invention. FIG.
FIGS. 10A and 10B illustrate first through fourth view images shown in a first view area; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The dimensions and relative sizes of the layers and regions in the figures may be exaggerated for clarity of illustration.

It will be understood that when an element or layer is referred to as being another element or "on" or "on ", it includes both intervening layers or other elements in the middle, do. On the other hand, when a device is referred to as "directly on" or "directly above ", it does not intervene another device or layer in the middle.

The terms spatially relative, "below," "lower," "above," "upper," and the like, And may be used to easily describe the correlation with other elements or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term "below" can include both downward and upward directions.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprise "and / or" comprising ", as used in the specification, means that the presence of stated elements, Or additions.

2 is a block diagram schematically showing a configuration of a stereoscopic image display apparatus according to a lenticular lens system according to the present invention.

3 is a block diagram showing an internal configuration of a timing controller in a stereoscopic image display apparatus using a lenticular lens system according to the present invention.

2, the lenticular lens type stereoscopic image display apparatus according to the present invention includes a display panel 110 having a plurality of left eye pixels and right eye pixels, a display panel 110 disposed on the front surface of the display panel 110, A barrier panel 120 for transmitting or blocking the left eye image and the right eye image outputted from the right eye pixels, an image collection unit 114 for collecting images for viewers by eye tracking, an image collection unit 114 A timing controller 113 for determining in which area of the viewing area of the stereoscopic image the viewer is located and inserting black data selectively in a specific sub-pixel according to the determination result, A gate driver 111 for applying a scan pulse to the gate lines G1, G2, ..., Gn of the display panel 110 and data lines D1, D2, D3, ..., Dm of the display panel 110, (R, G, B) signal to the digital image data It may include a data driver 112 for applying.

The stereoscopic image display device according to the present invention may be applied to a liquid crystal display (LCD), an organic light emitting diode (OLED) display, a field emission display (FED) A plasma display panel (PDP), or an electroluminescent display (EL). In the following embodiments, the display panel 110 is constituted by a liquid crystal display device, but the present invention is not limited thereto.

At this time, as described above, the display panel 110 is formed with a plurality of sub-pixels that display red, green, and blue, and these sub-pixels operate in conjunction with the barrier panel 120 to display a stereoscopic image, The left eye image and the right eye image are divided into a left eye image and a right eye image.

The display panel 110 according to the present invention is characterized in that sub-pixels are divided into n (n = 2, 3, 4, ..) in the horizontal direction. According to whether or not the 3D crosstalk is induced through the control of the timing controller 113 described later along with the division of the sub-pixels, the same sub-pixels which do not cause 3D crosstalk among the n divided sub- To apply digital image data (R, G, B) signals, and selectively insert black data into sub-pixels causing 3D crosstalk. As a result, it is possible to improve the 3D crosstalk in the multi view without degrading the resolution.

For example, when the display panel 110 is a liquid crystal display, the present invention can be applied to a liquid crystal mode, i.e., a twisted nematic (TN) mode, an in-plane switching (IPS) mode, The present invention is applicable regardless of the Fringe Field Switching (FFS) mode and the Vertical Alignment (VA) mode.

At this time, although not shown, the display panel 110 may consist of a color filter substrate, an array substrate, and a liquid crystal layer formed between the color filter substrate and the array substrate.

The color filter substrate includes a black matrix (BM) for separating a sub-color filter from a color filter composed of a plurality of sub-color filters for realizing colors of red, green and blue and blocking light transmitted through the liquid crystal layer, And a transparent common electrode for applying a voltage to the liquid crystal layer.

The array substrate includes a plurality of gate lines G1, G2, ..., Gn and data lines D1, D2, D3, ..., Dm, G1 And a pixel electrode formed in the pixel region, which are switching elements formed in the intersections of the data lines D1, D2, D3, ..., Dm and the data lines D1, D2, D3, ..., Dm.

In general, one pixel region corresponds to one sub-pixel. In the case of the display panel 110 according to the present invention in which the sub-pixels are divided into n, the pixel region is also divided into n and one image is displayed .

The thin film transistor includes a gate electrode connected to the gate lines G1, G2, ..., Gn, a source electrode connected to the data lines D1, D2, D3, ..., Dm and a drain electrode electrically connected to the pixel electrode . The thin film transistor includes a gate insulating film for insulation between the gate electrode and the source / drain electrode, and an active layer forming a conductive channel between the source electrode and the drain electrode by a gate voltage supplied to the gate electrode.

An upper polarizer is attached to the outer surface of the color filter substrate, and a lower polarizer is attached to the outer surface of the array substrate. The light transmission axis of the upper polarizer and the light transmission axis of the lower polarizer may be formed to be orthogonal to each other. An alignment film for setting a pre-tilt angle of the liquid crystal layer is formed on the inner surface of the color filter substrate and the array substrate, and a cell gap of the liquid crystal cell is formed between the color filter substrate and the array substrate. A spacer is formed.

The display panel 110 configured as described above displays an image under the control of the timing controller 113.

The display panel 110 can display the multi-view image in the 3D mode under the control of the timing controller 113. [ At this time, the multi-view image means first to m-th (m is a natural number of 2 or more) view images.

The view of the stereoscopic image can be generated by separating the cameras from each other by an interval of the viewer's eyes and taking an image of the object. For example, when an object is photographed using four cameras, the display panel 110 can display a four-view stereoscopic image.

The timing controller 113 receives timing signals such as a data enable signal DE and a dot clock signal CLK and generates control signals for controlling the operation timings of the gate driver 111 and the data driver 112 (GCS, DCS).

That is, the timing controller 113 drives the display panel 110 at a predetermined frame frequency based on the image data and the timing signals received from the multi-view image converter (not shown) The gate driver control signal GCS, and the data driver control signal DCS. The timing controller 113 supplies a gate driving unit control signal GCS to the gate driving unit 111 and supplies the video data R, G and B and a data driving unit control signal DCS to the data driving unit 112.

The gate driving unit control signal GCS for controlling the gate driving unit 111 includes a gate start pulse, a gate shift clock and a gate output enable signal. The gate start pulse controls the timing of the first gate pulse. The gate shift clock is a clock signal for shifting the gate start pulse. The gate output enable signal controls the output timing of the gate driver 111.

The data driver control signal DCS for controlling the data driver 112 includes a source start pulse, a source sampling clock, a source output enable signal, a polarity control signal, . The source start pulse controls the data sampling start timing of the data driver 112. The source sampling clock is a clock signal for controlling the sampling operation of the data driver 112 based on the rising or falling edge. If the digital video data to be input to the data driver 112 is transmitted in mini LVDS (Low Voltage Differential Signaling) interface standard, the source start pulse and the source sampling clock may be omitted. The polarity control signal inverts the polarity of the data voltage output from the data driver 112 to L (L is a natural number) horizontal period period. The source output enable signal controls the output timing of the data driver 112.

The data driver 112 includes a plurality of source drive ICs. The source drive ICs convert the image data (R, G, B) input from the timing controller 113 into a positive / negative gamma compensation voltage to generate positive / negative analog data voltages. Positive / negative polarity analog data voltages output from the source drive ICs are supplied to the data lines D1, D2, D3, ..., Dm of the display panel 110.

The gate driver 111 includes one or more gate driver ICs. The gate driver 111 includes a shift register, a level shifter and an output buffer for converting an output signal of the shift register into a swing width suitable for TFT driving of the liquid crystal cell. The gate driver 111 sequentially supplies a gate pulse synchronized with the data voltage to the gate lines G1, D2, ..., Gn of the display panel 110 under the control of the timing controller 113. [

Meanwhile, the timing controller 113 according to the present invention determines whether the viewer is located in the viewing area of the stereoscopic image using the current position coordinates of the viewer and the view-map, The function of the timing controller 113 will be described in detail with reference to FIG. 3. FIG.

However, in the following description, the structure for implementing the driving method of the stereoscopic image display device according to the present invention is described as being provided in the timing controller 113 as shown in FIG. 3. However, But is not limited thereto.

That is, in addition to the timing controller 113, only the reception unit 113-1, the position determination unit 113-5, the look-up table (LUT) 113-6, and the control unit 113-4 A separate control device capable of implementing the present invention may be provided in the stereoscopic image display device. However, in the following, the present invention is described as being provided in the timing controller 113 for the sake of convenience of explanation.

3, the timing controller 113 according to the present invention includes a receiving unit 113-1 for receiving video data and various timing signals (DE, CLK, etc.) from the broadcasting system, a receiving unit 113-1 A control signal generating unit 113-2 for generating and outputting a control signal using the timing signal transmitted from the receiving unit 113-1, A position determination unit 113-5 for extracting the position coordinates of the viewer using the image received through the image collection unit 114, Pixels of the n-divided sub-pixels according to a result of the determination, after determining whether the viewer is located in the viewing area of the stereoscopic image using the coordinates and the view- The view according to the optimization control unit (113-4), and the viewer viewing position to the mouth may be configured to include a look-up table (113-6) for storing the map.

First, the receiving unit 113-1 receives the video data and the timing signal as described above, and transmits the timing signal to the control signal generating unit 113-2. The video data is supplied to the video data arranging unit 113-3, As shown in FIG.

Next, the control signal generator 113-2 generates a control signal for controlling the operation timing of the data driver 112 and the gate driver 111, as described above, using the timing signal transmitted from the receiver 113-1 And generates control signals (GCS, DCS).

The image data sorting unit 113-3 arranges the received image data according to the characteristics of the display panel 110 and transmits the sorted image data to the data driver 112. [ In addition, the image data sorting unit 113-3 may perform a function of rearranging the image data and transmitting the image data to the data driver 112 when the viewing position of the viewer is changed.

However, the control unit 113-4 may rearrange the image data and transmit the image data directly to the data driver 112. In this case, the image data arrangement unit 113-3 may output the output stop control signal The image data may not be transmitted to the data driver 112. [

Next, the position determination unit 113-5 performs a function of extracting the position coordinates of the viewer who is viewing the stereoscopic image display apparatus according to the present invention using the image collected through the image collection unit 114. [

The image capturing unit 114 is for capturing an image of a viewer who is viewing a stereoscopic image using the stereoscopic image display apparatus according to the present invention. The image capturing unit 114 may be a camera, An infrared sensor may be used.

A specific method for determining the position coordinates of the viewer using the image collected by the position determination unit 113-5 through the image collection unit 114 is as follows.

The position determination unit 113-5 or the control unit 113-4 of the timing controller 113 may scan the image collection unit 114 from left to right or right to left direction of the stereoscopic image display apparatus, The width information (X coordinate) of the viewer in front of the stereoscopic image display apparatus can be found, and the distance information (Y coordinate) of the viewer can be obtained by analyzing the reflection time of the infrared rays.

The position determining unit 113-5 or the control unit 113-4 may control the driving unit so that the position of the image capturing unit (not shown) 114 to thereby allow the image collecting unit 114 to collect images through scanning.

When the camera is used as the image collection unit 114, the X coordinate may be determined by a face detecting method or the like, and the Y coordinate may be determined by using disparity information of a stereo camera Or depth information of a depth camera.

Next, the lookup table 113-6 performs a function for storing an optimized view-map according to the viewing position of the viewer. In this case, the control unit 113-4 controls the image data sorting unit 113-3 using the lookup table 113-6 according to the position coordinates of the viewer extracted through the position determination unit 113-5 I will rearrange them.

That is, when a change occurs in the viewing position of the viewer collected through the image collection unit 114, the control unit 113-4 controls the lookup table 113 6) to rearrange the image data through the image data sorting unit 113-3.

The controller 113-4 applies the same digital image data (R, G, B) signals to the same sub-pixels that do not cause 3D crosstalk among n sub-pixels divided in the horizontal direction, The black data is selectively applied to the sub-pixels causing the crosstalk.

At this time, which of the sub-pixels divided into n sub-pixels causes the 3D crosstalk can be generated according to the position coordinates of the viewer, and information previously stored in the look-up table 113-6 can be used. A 3D crosstalk is caused in a sub-pixel that is divided into similar (equal) sizes by the valleys of the lenticular lens 125 in the sub-pixels through which the ball of the lens 125 passes.

The view-map described in the present invention refers to coordinate information on a viewing area in which a stereoscopic image output from the stereoscopic image display apparatus according to the present invention can be viewed. The viewing area includes a regular area, There is an unplayable area.

Here, the regular time region refers to an area in which a viewer can normally view a stereoscopic image, in which a right eye image is formed in the right eye of the viewer and a left eye image is formed in the left eye.

In addition, since the difference information of the image is transmitted to the region, the viewer can recognize the image in three dimensions. However, since the left eye image is formed in the right eye and the right eye image is formed in the left eye, It is an area to be felt.

In addition, the unviewable area refers to an area where viewing of stereoscopic images is impossible

That is, the view-map includes coordinate information on positions where the above-described three regions are displayed.

However, since the regular time zone and the area other than the area can also be determined as the un-viewable area, the coordinate information for the un-viewable area may be omitted in the view-map.

Next, the barrier panel 120 is a medium for optically separating the path of the image, and includes a light transmitting region for transmitting or blocking the left eye image and the right eye image output from the left eye pixel and the right eye pixel of the display panel 110, And functions to form a light shielding region.

The barrier panel 120 may be configured in various ways using the following lenticular lens or a known technique.

4 is a perspective view schematically showing a stereoscopic image display apparatus using a lenticular lens system according to the present invention.

4, a lenticular lens type stereoscopic image display apparatus includes a display panel 110 on which a plurality of sub-pixels R, G, and B are disposed, a plurality of lenticular lenses having a predetermined width w, And a lenticular lens plate 120 including a lens 125 is disposed.

The lenticular lens plate 120 is formed by forming a material layer having a convex lens shape on its upper surface on a flat substrate.

The lenticular lens plate 120 serves to divide the left and right eye images. In the appropriate 3D viewing distance from the lenticular lens plate 120, a view- A diamond (viewable area) is formed.

Accordingly, the image image transmitted through the display panel 110 passes through the lenticular lens plate 120, and another group of images is introduced into the left and right eyes of the final viewer, so that a three-dimensional stereoscopic image can be sensed.

The display panel 110 and the lenticular lens plate 120 are supported by an instrument (not shown) or the like so that the display panel 110 and the lenticular lens plate 120 are spaced apart from each other by a predetermined distance Back distance).

According to the present invention, a plurality of lenticular lenses 125 are arranged in an inclined manner with a first angle? With respect to the longitudinal direction (y-axis direction) of the sub-pixels R, G, And the horizontal width w along the lateral direction (x-axis direction) of the sub-pixels R, G and B of the lenticular lens 125 is set to be an integer multiple of the sub-pixels R, G, Can be set.

That is, in the stereoscopic image display apparatus according to the present invention, the lenticular lens 125 provided on the lenticular lens plate 120 is inclined at a first angle? With respect to the longitudinal direction of the sub-pixels R, G, .

Therefore, the number of views for viewing a 3D image can be adjusted by tilting the lenticular lens plate 120 with respect to the display panel 110 displaying the 2D image.

The first angle? Inclined with respect to the longitudinal direction of the sub-pixels R, G, B of the lenticular lens 125 in the lenticular lens plate 120 is tan ^-1 ((M * Pa) / N * Pb)).

Here, Pa is the short axis pitch of the sub-pixels R, G and B, Pb is the long axis pitch of the sub-pixels R, G and B, and M and N are the arbitrary natural numbers, (R, G, B) in a group when a plurality of sub-pixels (R, G, B) are grouped and a group is exactly passed through a vertex in a diagonal direction G and B in the longitudinal direction of the sub-pixels R, G and B and the number of the sub-pixels R, G and B of the sub-pixels R, G and B, respectively. At this time, it is general that M and N generally satisfy a value of M / N? 2.

The number assigned to the plurality of sub-pixels R, G, and B located in one group is determined by arranging the lenticular lens 125 of the lenticular lens plate 120 at a first angle? (R, G, and B) that are displayed when viewing a 3D image in each view region. The number of views is defined as an area capable of viewing a 3D image of the stereoscopic image display apparatus.

The stereoscopic image display device having the lenticular lens plate 120 according to the present invention is effective in terms of luminance improvement and further has an effect of improving the viewing angle for viewing 3D images by increasing the number of views.

The increase in the number of views results from the structure in which the lenticular lenses 125 provided on the lenticular lens plate 120 are arranged to have a predetermined angle with respect to the longitudinal directions of the sub-pixels R, G, and B, slanted structure is applied. Application of such a slanted structure can prevent resolution degradation in one direction.

In this configuration, the multi-view image conversion unit receives the image data and the view control signal from the host system. The multi-view image conversion unit may determine the number of views of the stereoscopic image according to the view control signal.

The multi-view image conversion unit converts the image data according to the number of views set in accordance with the view control signal.

The host system supplies image data, timing signals, and the like to the multi-view image converter through an interface such as a Low Voltage Differential Signaling (LVDS) interface and a TMDS (Transition Minimized Differential Signaling) interface. The host system supplies 3D image data including left eye image data and right eye image data to the multi-view image conversion unit. As described above, the timing signals include a vertical synchronization signal, a horizontal synchronization signal, a data enable signal (Data Enable), a dot clock, and the like.

The host system receives the viewer detection information from the viewer detection apparatus, for example, the above-described image collection unit, and calculates the number of optimal views according to the viewer detection information. The host system generates a view control signal according to the number of optimal views and supplies the generated view control signal to the multi-view image conversion unit. The host system can generate the view control signal using a lookup table that receives the number of viewers of the viewer detection information as the input address and outputs the number of views stored in the input address.

On the other hand, when the lenticular lens plate 120 has a slant structure as described above, since pitch intervals of the sub-pixels R, G, B and the lenticular lenses 125 do not exactly coincide with each other, 3D crosstalk occurs . That is, as described above, sub-pixels (R, G, B) divided into similar (equal) sizes by the valleys of the lenticular lenses 125 among the sub- 3D crosstalk is induced in (R, G, B).

In the present invention, after dividing the sub-pixels R, G, and B in the horizontal direction, that is, in the horizontal direction, 3D crosstalk among the sub-pixels R, G, The 3D crosstalk in the multi-view can be improved without degrading the resolution by selectively inserting the black data into the sub-pixels R, G, and B to be generated, which will be described in detail with reference to the drawings.

FIG. 5 is a view illustrating an exemplary pixel structure of a stereoscopic image display device using a lenticular lens system according to a first embodiment of the present invention. FIG. 5 illustrates a pixel structure using four views. However, the present invention is not limited to the above-described number of views.

6A and 6B are views showing first through fourth view images shown in the first view area, for example, and show multi view images corresponding to a partial area A of the display panel shown in FIG. 5 For example.

6A illustrates the first through fourth view images before the black data is inserted, while FIG. 6B illustrates an example in which n (= 2) sub-pixels divided according to the first embodiment of the present invention, For example, the first through fourth view images in which black data is selectively inserted into the sub-pixels causing the 3D crosstalk.

5 and 6A and 6B, the display panel includes first through m-th view images V1, V2, and V3 in units of m (m is a natural number) sub-pixels SP1, SP2, SP3, , V4).

In this case, for convenience of description, the display panel includes first through fourth view images V1, V2, V3, and V4 in units of four sub-pixels SP1, SP2, SP3, and SP4 But the present invention is not limited to this.

A k-th sub-pixel (k is a natural number satisfying 1? K? M) among the m sub-pixels (SP1, SP2, SP3, SP4) of the display panel displays the k-th view image. For example, the first sub-pixel SP1 represents a first view image V1, the second sub-pixel SP2 represents a second view image V2, SP3 display the third view image V3 and the fourth sub-pixel SP4 displays the fourth view image V4.

The barrier panel may be implemented as a lenticular lens 125 of a slanted structure formed obliquely at a predetermined angle relative to the sub-pixels SP1, SP2, SP3, SP4. More specifically, the lenticular lens 125 of the slanted structure is formed obliquely by a predetermined angle with respect to the long axis sides of the sub-pixels SP1, SP2, SP3, and SP4.

The barrier panel divides each of the first through m-th view images V1, V2, V3, and V4 displayed on the m sub-pixels SP1, SP2, SP3, and SP4 into first through m- do. Thus, the barrier panel outputs the k-th view image displayed on the k-th sub-pixel to the k-th view area. For example, the barrier panel outputs the first view image V1 displayed on the first sub-pixels SP1 to the first view area and the second view image V2 displayed on the second sub-pixels SP2, The third view image V3 displayed on the third sub-pixels SP3 is output to the third view area, the fourth sub-pixels SP4, And outputs the fourth view image V4 to the fourth view area. Thus, the viewer can view the k-th view image in the k-th view area. For example, the viewer can view the first view image V1 in the first view area, view the second view image V2 in the second view area, and view the third view image V2 in the third view area V3 in the fourth view area, and can view the fourth view image V4 in the fourth view area.

At this time, in the stereoscopic image display apparatus of the lenticular lens system having the slant structure, not only the k-th view image but also other view images are displayed in the k-th view region. As a result, the viewer feels 3D crosstalk in which multiple view images overlap in the k-th view region.

Accordingly, the lenticular lens type stereoscopic image display apparatus according to the first embodiment of the present invention includes sub-pixels SP1, SP2, SP3, and SP4 for displaying a view image other than the k-th view image in the k-th view area And the black data BD is selectively inserted into the black data BD.

In the present invention, the sub-pixels SP1, SP2, SP3, and SP4 are divided into n (= 2) in the horizontal direction, i.e., Pixels SP1, SP2, SP3, and SP4, which cause 3D crosstalk depending on the position of the viewer, among the sub-pixels SP, SP3, and SP4.

In FIG. 5, the sub-pixels SP1, SP2, SP3, and SP4 are divided into two in the horizontal direction. However, the present invention is not limited thereto. In this case, according to the first embodiment of the present invention, the first sub-pixel SP1 may be composed of upper and lower first sub-pixels SP1 'and SP1' Pixels SP3 'and SP3' ', and the third sub-pixel SP3 may be composed of the upper and lower second sub-pixels SP2' and SP3 ' And the fourth sub-pixel SP4 may be composed of the upper and lower fourth sub-pixels SP4 'and SP4' '.

In this case, referring to FIG. 6B, for example, the sub-pixels SP1, SP2, SP3 and SP4 divided into n (= 2) sub- The first sub-pixel SP1 'of the sub-pixel SP1, SP2, SP3 and SP4, that is, the upper second sub-pixel SP2' of the first group 1 ' Pixel SP1 'to the upper first sub-pixel SP1' and the upper fourth sub-pixel SP4 'of the lower fourth sub-pixel SP4' 'and the third group 3' can do. Here, the first group (1), the second group (2), and the third group (3) are sorted in order of any pixel structure shown in FIG.

Between the sub-pixels SP1, SP2, SP3 and SP4 between the respective upper and lower sub-pixels (SP1 ', SP1', SP2 ', SP2', SP3 ', SP3', SP4 'and SP4' The black matrix BM may not be formed. This is because the same digital image data signal is applied to each of the sub-pixels SP1, SP2, SP3 and SP4, but the present invention is not limited thereto. However, when the black matrix BM is not formed between the upper and lower sub-pixels SP1 ', SP1', SP2 ', SP2', SP3 ', SP3', SP4 'and SP4' The reduction in the number of times of operation can be reduced.

As described above, the lenticular lens type stereoscopic image display apparatus according to the first embodiment of the present invention includes the sub-pixels SP1, SP2, SP3, SP4, Pixels SP1, SP2, SP3, and SP4 that cause 3D crosstalk among the black pixels SP1, SP2, SP3, and SP4 are selectively inserted into the black data BD. Thus, only the kth view image is displayed in the kth view region, so that the viewer can minimize the 3D crosstalk in which multiple view images overlap in the kth view region. As a result, the stereoscopic image display apparatus using the lenticular lens system according to the first embodiment of the present invention can realize a stereoscopic image with high quality.

On the other hand, when the viewer moves from the front to the side of the display panel, the lenticular lens is moved from the original position to the left or right side, and in this case, the insertion position of the black data is changed. do.

FIG. 7 is a view illustrating an exemplary pixel structure of a stereoscopic image display apparatus according to a first embodiment of the present invention when viewed from the side, wherein a pixel structure in the case of using four views is shown as an example Giving. However, the present invention is not limited to the view number as described above.

At this time, FIG. 7 is substantially the same as the pixel structure shown in FIG. 5 except for the relative position of the lenticular lens with respect to the sub-pixel.

FIGS. 8A and 8B are views showing first through fourth view images shown in side view, for example. In FIG. 8A and FIG. 8B, multi view images corresponding to a partial area B of the display panel shown in FIG. For example.

8A illustrates the first through fourth view images before the black data is inserted. FIG. 8B illustrates an example in which n (= 2) sub-pixels divided in accordance with the first embodiment of the present invention, For example, the first through fourth view images in which black data is selectively inserted into the sub-pixels causing the 3D crosstalk.

7 and 8A and 8B, the display panel displays first through m-th view images V1, V2 and V3 in units of m (m is a natural number) sub-pixels SP1, SP2, SP3, , V4).

In this case, for convenience of description, the display panel includes first through fourth view images V1, V2, V3, and V4 in units of four sub-pixels SP1, SP2, SP3, and SP4 But the present invention is not limited to this.

A k-th sub-pixel (k is a natural number satisfying 1? K? M) among the m sub-pixels (SP1, SP2, SP3, SP4) of the display panel displays the k-th view image. For example, the first sub-pixel SP1 represents a first view image V1, the second sub-pixel SP2 represents a second view image V2, SP3 display the third view image V3 and the fourth sub-pixel SP4 displays the fourth view image V4.

The barrier panel may be implemented as a lenticular lens 125 of a slanted structure formed obliquely at a predetermined angle relative to the sub-pixels SP1, SP2, SP3, SP4.

The barrier panel divides each of the first through m-th view images V1, V2, V3, and V4 displayed on the m sub-pixels SP1, SP2, SP3, and SP4 into first through m- do. Thus, the barrier panel outputs the k-th view image displayed on the k-th sub-pixel to the k-th view area.

As described above, the lenticular lens type stereoscopic image display apparatus according to the first embodiment of the present invention includes the sub-pixels SP1, SP2, SP3, and SP4, (SP1, SP2, SP3, SP4) which cause 3D crosstalk depending on the position of the viewer among the video data (SP1, SP2, SP3, SP4) .

In FIG. 7, the sub-pixels SP1, SP2, SP3, and SP4 are divided into two in the horizontal direction. However, the present invention is not limited thereto. At this time, the first sub-pixel SP1 may be composed of upper and lower first sub-pixels SP1 ', SP1 ", and the second sub-pixel SP2 may be composed of upper and lower second sub- The third sub-pixel SP3 may be composed of upper and lower third sub-pixels SP3 'and SP3', and the fourth sub-pixel SP4 ' May be composed of upper and lower fourth sub-pixels SP4 'and SP4' '.

In this case, as the position of the viewer moves from the front to the side of the display panel, the lenticular lens 125 is moved from the original position to the left side. In this case, referring to FIG. 8B, Pixels SP1, SP2, SP3, and SP4 that are divided into similar (equal) sizes by the valleys of the lenticular lens 125 among the sub-pixels SP1, SP2, SP3, and SP4, The upper second sub-pixel SP2 'of the group (1) and the upper third sub-pixel SP3', the upper second sub-pixel SP2 'of the second group (2) Pixel SP1 " and the lower fourth sub-pixel SP4 " of the first sub-pixel SP1 and the lower fourth sub-pixel SP4 " The second group (2) and the third group (3) are sorted in order of any pixel structure shown in FIG. 8B for convenience of explanation.

As described above, a black matrix BM is formed between the upper and lower sub-pixels SP1 ', SP1', SP2 ', SP2', SP3 ', SP3', SP4 'and SP4' . This is because the same digital image data signal is applied to each of the sub-pixels SP1, SP2, SP3 and SP4, but the present invention is not limited thereto. However, when the black matrix BM is not formed between the upper and lower sub-pixels SP1 ', SP1', SP2 ', SP2', SP3 ', SP3', SP4 'and SP4' The reduction in the number of times of operation can be reduced.

When the viewer moves from the front side to the side of the display panel, the position of the viewer is detected through the image collection unit, and then the position of the viewer is determined through the position determination unit. Such a change in position of the viewer can be regarded as a movement of the lenticular lens relative to the sub-pixel, and based on this, the image data is rearranged using the optimized view-map stored in the lookup table. In accordance with the positional coordinates of the viewer, black data is selectively inserted only into specific sub-pixels among the sub-pixels divided into n sub-pixels.

On the other hand, as described above, the sub-pixel can be divided into a plurality of sub-pixels in a horizontal direction, such as three or four sub-pixels in addition to the two sub-pixels. do.

FIG. 9 is a view illustrating a pixel structure of a stereoscopic image display device using a lenticular lens system according to a second embodiment of the present invention. FIG. 9 illustrates a pixel structure using four views. However, the present invention is not limited to the above-described number of views.

10A and 10B are views showing first through fourth view images shown in the first view area, for example, and show multi view images corresponding to a partial area C of the display panel shown in FIG. 9 For example.

In this case, FIG. 10A shows first through fourth view images before black data is inserted, and FIG. 10B shows an example in which n (= 3) divided sub- For example, the first through fourth view images in which black data is selectively inserted into the sub-pixels causing the 3D crosstalk.

9 and 10A and 10B, the display panel includes first through m-th view images V1, V2, and V3 in units of m (m is a natural number) sub-pixels SP1, SP2, SP3, , V4).

In this case, for convenience of description, the display panel includes first through fourth view images V1, V2, V3, and V4 in units of four sub-pixels SP1, SP2, SP3, and SP4 But the present invention is not limited to this.

A k-th sub-pixel (k is a natural number satisfying 1? K? M) among the m sub-pixels (SP1, SP2, SP3, SP4) of the display panel displays the k-th view image. For example, the first sub-pixel SP1 represents a first view image V1, the second sub-pixel SP2 represents a second view image V2, SP3 display the third view image V3 and the fourth sub-pixel SP4 displays the fourth view image V4.

The barrier panel may be implemented as a lenticular lens 225 of a slanted structure formed obliquely at a predetermined angle with respect to the sub-pixels SP1, SP2, SP3, SP4.

The barrier panel divides each of the first through m-th view images V1, V2, V3, and V4 displayed on the m sub-pixels SP1, SP2, SP3, and SP4 into first through m- do. Thus, the barrier panel outputs the k-th view image displayed on the k-th sub-pixel to the k-th view area.

The lenticular lens type stereoscopic image display apparatus according to the second embodiment of the present invention divides the sub-pixels SP1, SP2, SP3, and SP4 in the horizontal direction, that is, in the horizontal direction, by n (= 3) (SP1, SP2, SP3, SP4) which cause 3D crosstalk depending on the viewer's position among the sub-pixels SP1, SP2, SP3, .

In FIG. 9, the sub-pixels SP1, SP2, SP3, and SP4 are divided into three in the horizontal direction. However, the present invention is not limited thereto. In this case, according to the second embodiment of the present invention, the first sub-pixel SP1 can be composed of the first, second and third sub-pixels SP1 ', SP1', SP1 '', The sub-pixel SP2 may be constituted by the upper, middle and lower second sub-pixels SP2 ', SP2' 'and SP2' '', and the third sub- Pixels SP4 ', SP4' 'and SP4' '', and the fourth sub-pixel SP4 may be constituted by the upper, middle and lower fourth sub-pixels SP4 ', SP4' and SP4 ' ≪ / RTI >

In this case, referring to FIG. 10B, for example, in the sub-pixels SP1, SP2, SP3 and SP4 divided into n (= 3) The middle second sub-pixel SP2 ', SP2' 'of the sub-pixels SP1, SP2, SP3 and SP4, that is, the first group (1) The upper, middle first sub-pixels SP1 ', SP1' 'of the middle and lower fourth sub-pixels SP4' 'and SP4' '' and the third group 3 ' The black data BD can be selectively inserted into the first and fourth sub-pixels SP4 'and SP4' of the first and second sub-pixels SP1 'and SP4' And the third group (3) are sorted in order of any pixel structure shown in FIG. 10B for convenience of explanation.

, SP2 ', SP2', SP2 '', SP3 ', SP3', SP3 ', and SP3' in the same manner as in the first embodiment of the present invention described above. A black matrix BM may not be formed between the sub-pixels SP1, SP2, SP3 and SP4, unlike the boundaries between the sub-pixels SP1, SP4 ', SP4' and SP4 ''. This is because the same digital image data signal is applied to each of the sub-pixels SP1, SP2, SP3 and SP4, but the present invention is not limited thereto. SP2 ', SP2' ', SP3', SP3 ', SP3' ', SP4', SP4 ', SP4', and SP4 ' The black matrix BM does not have to be formed between the pixel electrodes " a " and "a ", the reduction of the aperture ratio can be reduced.

As described above, the stereoscopic image display apparatus of the lenticular lens type according to the second embodiment of the present invention has the sub-pixels SP1, SP2, SP3 and SP4 in the lateral direction substantially the same as the first embodiment of the present invention (SP, SP2, SP3, SP4) that cause 3D crosstalk among the n sub-pixels SP1, SP2, SP3, . Thus, only the kth view image is displayed in the kth view region, so that the viewer can minimize the 3D crosstalk in which multiple view images overlap in the kth view region. As a result, the stereoscopic image display apparatus using the lenticular lens system according to the second embodiment of the present invention can realize a stereoscopic image with high quality.

In addition, when the viewer moves from the front to the side of the display panel substantially the same as the first embodiment of the present invention, after detecting the movement of the viewer through the image collection unit, the position coordinates of the viewer . Such a change in position of the viewer can be regarded as a movement of the lenticular lens relative to the sub-pixel, and based on this, the image data is rearranged using the optimized view-map stored in the lookup table. In accordance with the positional coordinates of the viewer, black data is selectively inserted only into specific sub-pixels among the sub-pixels divided into n sub-pixels.

While a great many are described in the foregoing description, it should be construed as an example of preferred embodiments rather than limiting the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

110: display panel 120: lenticular lens plate
125: Lenticular lens BD: Black data
BM: Black Matrix SP1, SP2, SP3, SP4: Sub-pixel
V1, V2, V3, V4: View image

Claims (7)

a display panel in which each of the m sub-pixels is divided into n (n = 2, 3, ...) in a horizontal direction;
A lenticular lens plate including a plurality of lenticular lenses arranged to be inclined at a predetermined angle on a front surface of the display panel; And
And a timing controller for selectively inserting black data into a part of the sub-pixels causing the 3D crosstalk according to the position of the viewer among the n divided sub-pixels. Stereoscopic image display device. The apparatus of claim 1, wherein the timing controller applies the same image data signal to the same sub-pixels that do not cause 3D crosstalk among the n-divided sub-pixels, and the sub- And black data is selectively inserted into the three-dimensional image. The apparatus of claim 1, wherein the timing controller
A receiving unit for receiving image data and various timing signals;
A control signal generator for generating and outputting a control signal using the timing signal transmitted from the receiver;
An image data sorting unit for sorting the image data transmitted from the receiving unit or rearranging the image data when the viewing position of the viewer is changed;
A position determination unit for extracting position coordinates of a viewer using the image received through the image collection unit;
Pixels of the n-divided sub-pixels according to a result of the determination, after determining whether the viewer is located in the viewing area of the stereoscopic image using the position coordinates of the viewer and the view-map, A control unit for inserting data; And
And a lookup table for storing an optimized view-map according to a viewing position of the viewer. The apparatus of claim 3, wherein the controller selectively inserts black data into sub-pixels displaying a view image other than the k-th view image in k (k is a natural number satisfying 1? K? M) Dimensional image display device according to any one of claims 1 to 3. 4. The method of claim 1, wherein when each of the m sub-pixels is divided into two in the horizontal direction, four views, for example, the first sub-pixel consists of an upper and a lower first sub- Pixel is constituted by upper and lower second sub-pixels, the third sub-pixel is composed of upper and lower third sub-pixels, and the fourth sub-pixel is composed of upper and lower fourth sub-pixels Dimensional image display device. 6. The stereoscopic image display device of claim 5, wherein a black matrix is not formed between the upper and lower sub-pixels, unlike a boundary between the sub-pixels. A display panel in which each of the plurality of sub-pixels is divided into two in a horizontal direction;
A lenticular lens plate including a plurality of lenticular lenses arranged to be inclined at a predetermined angle on a front surface of the display panel; And
And a timing controller for selectively inserting black data into a part of sub-pixels passing through the bones of the lenticular lens among the two divided sub-pixels.

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