KR101990334B1 - Stereoscopic image display device and method for driving the same - Google Patents

Abstract

The present invention relates to a stereoscopic image display apparatus of a non-eyeglass system and a driving method thereof. A stereoscopic image display apparatus according to an embodiment of the present invention includes: a display panel for displaying a multi-view image including first through n-th (n is a natural number of 2 or more) view images; An optical plate for separating the first to n-th view images into first to n-th view areas; view video data including p × q (p, q is a natural number) view image data, and a jth (i is a natural number satisfying 1≤i≤p) (j is 1≤j I < = q) and the adjoining view image data written in the subpixel closest to the subpixel in which the jth view image data of the i-th line is written, A data processing unit for converting view image data; A data driving circuit for converting the multi-view image data converted from the data processing unit into analog data voltages and supplying the data to the data lines of the display panel; And a gate driving circuit for sequentially supplying gate pulses to the gate lines of the display panel, wherein the j-th view image data of the i-th line and the j-th view image data of the i- Adjacent view image data written in subpixels are image data of the same color.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image display apparatus and a method of driving the stereoscopic image display apparatus.

The present invention relates to a stereoscopic image display apparatus of a non-eyeglass system and a driving method thereof.

The stereoscopic image display device is divided into a stereoscopic technique and an autostereoscopic technique. The binocular parallax method uses parallax images of right and left eyes with large stereoscopic effect, and both glasses and non-glasses are used, and both methods are practically used. In the spectacle method, there is a patterned retarder method in which a polarizing direction of a left-right parallax image is displayed on a direct-view type display device or a projector, and stereoscopic images are displayed using polarizing glasses. The eyeglass system has a shutter glasses system in which right and left parallax images are displayed in a time-division manner on a direct view type display device or a projector, and a stereoscopic image is implemented using liquid crystal shutter glasses. In the non-eyeglass system, stereoscopic images are realized by separating left and right parallax images using an optical plate such as a parallax barrier or a lenticular lens.

Recently, the non-eyewear system has been widely applied to small and medium-sized displays such as smart phones, tablets, and notebooks, because the user can conveniently view stereoscopic images without wearing shutter glasses or polarized glasses . In the non-eyeglass system, a stereoscopic image is implemented by displaying a multi-view image including n view images (n is a natural number of 2 or more) on n view areas using an optical plate. However, in the non-eyeglass system, a view image other than the k-th view image can be seen in k (k is a natural number satisfying 1? K? N) view region due to optical separation error due to a design error of the optical plate . For example, a k-1 view image or a (k + 1) view image that is a view image adjacent to the kth image in the kth view region may be displayed. In this case, since the user can view the k-th view image as well as the adjacent view images in the k-th view region, 3D crosstalk in which multiple view images overlap can be felt. Further, due to the 3D crosstalk, the quality of the stereoscopic image may be degraded in the non-eyeglass system.

The present invention relates to a stereoscopic image display device capable of reducing 3D crosstalk and a driving method thereof.

A stereoscopic image display apparatus according to an embodiment of the present invention includes: a display panel for displaying a multi-view image including first through n-th (n is a natural number of 2 or more) view images; An optical plate for separating the first to n-th view images into first to n-th view areas; view video data including p × q (p, q is a natural number) view image data, and a jth (i is a natural number satisfying 1≤i≤p) (j is 1≤j I < = q) and the adjoining view image data written in the subpixel closest to the subpixel in which the jth view image data of the i-th line is written, A data processing unit for converting view image data; A data driving circuit for converting the multi-view image data converted from the data processing unit into analog data voltages and supplying the data to the data lines of the display panel; And a gate driving circuit for sequentially supplying gate pulses to the gate lines of the display panel, wherein the j-th view image data of the i-th line and the j-th view image data of the i- Adjacent view image data written in subpixels are image data of the same color.

A method of driving a stereoscopic image display device according to an exemplary embodiment of the present invention includes a display panel that displays a multi-view image including first through n-th (n is a natural number of 2 or more) view images, (P, q is a natural number) pieces of view image data, the method comprising the steps of: inputting multi-view image data including p x q View image data of a jth line (j is a natural number satisfying 1? J? Q) and a j-th view image data of the i-th line are written into the i-th line (i is a natural number satisfying 1? I? P) Transforming the j-th view image data of the i-th line by reflecting the transformation parameters in adjacent view image data written in the subpixel closest to the subpixel; Converting the multi-view image data converted from the data processing unit into analog data voltages and supplying the analog data voltages to the data lines of the display panel; And sequentially supplying gate pulses to the gate lines of the display panel, wherein the j-th view image data of the i-th line and the j-th view image data of the i- Adjacent view image data to be written in the image data are image data of the same color.

The present invention predicts that the k-th view image is influenced by the view images adjacent to the k-th view image, and writes the view image data to be written in the sub-pixels displaying the k-th view image into sub- And reflects the view image data to be displayed. As a result, the present invention can prevent the user from viewing the k-th view image as well as the adjacent view image in the k-th view region, thereby reducing 3D crosstalk. Accordingly, the present invention can improve the quality of a stereoscopic image viewed by a user.

1 is a block diagram schematically showing a stereoscopic image display apparatus according to an embodiment of the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a stereoscopic image display apparatus,
3 is a block diagram showing the data processor of FIG. 1 in detail;
4 is a flowchart illustrating a method of driving a stereoscopic image display device according to an exemplary embodiment of the present invention.
Figures 5A and 5B illustrate an example of gamma correction and degamma correction.
6 is an exemplary view showing a display panel and an optical plate displaying seven view images.
FIG. 7 is a block diagram showing the data conversion unit of FIG. 3 in detail.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The component name used in the following description may be selected in consideration of easiness of specification, and may be different from the actual product name.

1 is a block diagram schematically showing a stereoscopic image display apparatus according to an embodiment of the present invention. 1, a stereoscopic image display apparatus according to an exemplary embodiment of the present invention includes a display panel 10, an optical plate 30, a gate driving circuit 110, a data driving circuit 120, a timing controller 130, A data processing unit 140, a host system 150, and the like. A stereoscopic image display device according to an exemplary embodiment of the present invention includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode (Organic Light Emitting Diode, OLED). Although the present invention has been described in the following embodiments, the stereoscopic image display device is implemented as a liquid crystal display device, but the present invention is not limited thereto.

The display panel 10 includes an upper substrate and a lower substrate facing each other with a liquid crystal layer interposed therebetween. The display panel 10 is formed with a pixel array including liquid crystal cells arranged in a matrix by the intersection structure of the data lines D and the gate lines G (or scan lines). Each of the liquid crystal cells of the pixel array drives the liquid crystal of the liquid crystal layer by a voltage difference between a pixel electrode through which a data voltage is charged through a TFT (Thin Film Transistor) and a common electrode to which a common voltage is applied, .

On the upper substrate of the display panel 10, a black matrix and a color filter are formed. The common electrode is formed on the upper substrate in the case of a vertical electric field driving method such as a TN (Twisted Nematic) mode and a VA (Vertical Alignment) mode. The common electrode may be formed in the IPS (In-Plane Switching) mode and the FFS And may be formed on the lower substrate together with the pixel electrode in the case of the horizontal field driving method. The liquid crystal mode of the display panel 10 may be implemented in any liquid crystal mode as well as a TN mode, a VA mode, an IPS mode, and an FFS mode. On the upper substrate and the lower substrate of the liquid crystal display panel, an alignment film is formed to attach a polarizing plate and set a pre-tilt angle of the liquid crystal. A spacer is formed between the upper substrate and the lower substrate of the display panel 10 to maintain a cell gap of the liquid crystal layer.

The display panel 10 of the present invention can be implemented in any form such as a transmissive liquid crystal display panel, a transflective liquid crystal display panel, and a reflective liquid crystal display panel. In a transmissive liquid crystal display panel and a transflective liquid crystal display panel, a backlight unit is required. The backlight unit may be implemented as a direct type backlight unit or an edge type backlight unit.

The optical plate 30 is disposed on the display panel 10 and advances the first to n-th view images displayed on the sub-pixels of the display panel 10 to the first to n-th view areas, respectively. That is, the optical plate 30 advances the k-th view image Vk displayed on the sub-pixels to the k-th view area VPk. The optical plate 30 may be implemented with a parallax barrier, a switchable barrier, a lenticular lens, or a switchable lens. Although the present invention has been described by focusing on the optical plate 30 implemented as a lenticular lens in the following embodiments, it should be noted that the present invention is not limited to this. On the other hand, when the optical plate 30 is implemented as a switchable barrier or a switchable lens, an optical plate driving circuit for driving the optical plate 30 is required. In this case, the optical plate driving circuit controls the optical separation of the optical plate 30 by supplying a driving voltage to the optical plate 30. [ In addition, the optical plate 30 can be disposed in a slanted or vertical manner. The slanting method is a method in which the optical plate 30 is formed obliquely at a predetermined angle with respect to the subpixels of the display panel 10, Direction. Although the present invention has been described by focusing on the optical plate 30 implemented in the slant mode in the following embodiments, it should be noted that the present invention is not limited thereto. Hereinafter, a stereoscopic image implementing method using the optical plate 30 will be described in detail with reference to FIG.

FIG. 2 is a view illustrating an embodiment of a stereoscopic image-free method according to an embodiment of the present invention. 2, the display panel 10 displays four view images V1, V2, V3, and V4 and four view images V1, V2, V3, and V4 of the optical plate 30 are divided into four view images To the view areas VP1, VP2, VP3, and VP4. 2, the optical plate 30 advances a first view image V1 displayed on subpixels to a first view area VP1, a second view image V2 displayed on subpixels, The third view image V3 displayed on the subpixels is moved to the third view area VP3 and the fourth view image V4 displayed on the subpixels is moved to the second view area VP2, To the fourth view area VP4. When the left eye of the user is located in the kth view area VPk and the right eye is located in the k-1 view area VPk-1, the user views the kth view image Vk in the left eye, the neighbor view image of the (k-1) view image can be viewed. Therefore, the user can feel the three-dimensional effect by the binocular parallax. For example, when the left eye of the user is located in the second view area VP2 and the right eye is located in the first view area VP1 as shown in FIG. 2, the user views the second view image V2 with the left eye , The first view image V1 can be viewed with the right eye. Therefore, the user can feel the three-dimensional effect by the binocular parallax.

The data driving circuit 120 includes a plurality of source drive integrated circuits (ICs). The source driver ICs convert the 2D image data RGB2D or the converted multi-view image data MVD 'into a positive / negative gamma compensation voltage under the control of the timing controller 130 to generate positive / negative analog data voltages Occurs. Positive / negative polarity analog data voltages output from the source drive ICs are supplied to the data lines D of the display panel 10.

The gate driving circuit 110 sequentially supplies gate pulses (or scan pulses) to the gate lines G of the display panel 10 under the control of the timing controller 130. The gate driver 110 may be composed of a plurality of gate drive integrated circuits each including a shift register, a level shifter for converting an output signal of the shift register into a swing width suitable for TFT driving of the liquid crystal cell, have.

The timing controller 130 receives 2D image data (RGB2D) or converted multi-view image data (MVD '), timing signals and a mode signal (MODE) from the data processing unit 140. The timing signals may include a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a clock signal. The timing controller 130 generates a gate control signal GCS for controlling the gate driving circuit 110 based on the 2D image data RGB2D and the timing signals in the 2D mode and controls the data driving circuit 120 And generates a data control signal (DCS). The timing controller 130 generates a gate control signal GCS for controlling the gate driving circuit 110 based on the multi-view image data MVD 'and the timing signals converted in the 3D mode, 120 for controlling the data control signal DCS. The timing controller 130 supplies a gate control signal GCS to the gate driving circuit 110. [ The timing controller 130 supplies the 2D video data RGB2D and the data control signal DCS to the data driving circuit 120 in the 2D mode and outputs the converted multi view video data MVD ' (DCS) to the data driving circuit 120.

The host system 150 scales the 2D image data RGB2D or the multi-view image data MVD input from the external video source device into a data format suitable for display on the display panel 10, May include a System on Chip with integrated on-chip. The host system 150 transmits the 2D image data RGB2D or the multi view image data MVD and timing signals to the data processing unit 140 through an interface such as a Low Voltage Differential Signaling (LVDS) interface and a TMDS (Transition Minimized Differential Signaling) . The host system 150 supplies the 2D image data RGB2D and the timing signals to the data processing unit 140 in the 2D mode and supplies the multi-view image data MVD and the timing signals to the data processing unit 140 in the 3D mode . Also, the host system 150 supplies the data processing unit 140 with a mode signal MODE capable of distinguishing between the 2D mode and the 3D mode.

The data processing unit 140 may distinguish the 2D mode from the 3D mode according to the mode signal MODE. The data processing unit 140 outputs the 2D image data RGB2D to the timing controller 130 without converting the 2D image data RGB2D in the 2D mode. The data processing unit 140 converts the multi-view image data MVD in the 3D mode and outputs the converted multi-view image data MVD 'to the timing controller 130. Hereinafter, the data processing method of the data processing unit 140 will be described in detail with reference to FIGS. 3 and 4. FIG.

3 is a detailed block diagram of the data processing unit of FIG. 4 is a detailed flowchart illustrating a data processing method of a data processing unit according to an embodiment of the present invention. 3, the data processing unit 140 includes a gamma correction unit 141, a first memory 142, a second memory 143, a data conversion unit 144, and a degamma correction unit 145 do. The data processing unit 140 directly outputs the 2D image data RGB2D in the 2D mode without conversion and converts the multi-view image data MVD in the 3D mode. Hereinafter, the data processing method of the data processing unit 140 in the 3D mode will be described in detail with reference to FIGS. 3 and 4. FIG.

First, the gamma correction unit 141 receives multi-view image data MVD from the host system 150 in the 3D mode. The gamma correction unit 141 performs gamma correction on the multi-view image data MVD as shown in Equation (1) to linearize the multi-view image data MVD having the non-linear gamma characteristic. In particular, the multi-view image data MVD of one frame period is divided into p (p is the horizontal resolution of the display panel 10) x q (q is the display panel 10) according to the resolution of the display panel 10, Of the view image data. Accordingly, the gamma correction unit 141 performs an operation of Equation (1) for all p x q view image data. One frame period means a period in which image data is written in all the subpixels of the display panel 10. [

The gamma correction unit 141 replaces multi-view image data MVD with a value obtained by squaring MVD / 255 by 2.2. In Equation (1), multi-view image data (MVD) is implemented with 8 bits, but it should be noted that the present invention is not limited thereto. That is, the multi-view image data MVD may be implemented with 10 bits. Multi-view image data (MVD) implemented with 8 bits has values ranging from 0 to 255, and multi-view image data (MVD) implemented with 10 bits has values ranging from 0 to 1023.

5A is an exemplary diagram showing gamma correction. 5A, the gamma correction unit 141 calculates a gamma curve (or a gamma curve) of multi-view image data MVD input from the host system 150 by linear gamma calculation, Can be corrected. It should be noted that the gamma correction of the gamma correction unit 141 can be implemented by other known methods such as a method using a look-up table as well as a mathematical operation method using Equation (1). (S101)

Second, the first memory 142 stores multi-view image data (MVD) corrected with linear gamma. The first memory 142 may store multi-view image data MVD of one frame period. In this case, the first memory 142 may be implemented as a frame memory. Also, the first memory 142 may store some of the multi-view image data MVD in one frame period. In this case, the first memory 142 may be implemented as a line memory. The first memory 142 outputs the multi-view image data MVD to the data converter 144. The first memory 142 may be implemented as a RAM (Random Access Memory). The second memory 143 stores the conversion parameter CP. The second memory 143 outputs the conversion parameter CP to the data converter 144. The second memory 143 may be implemented as a ROM (Read Only Memory). (S102)

Thirdly, the data conversion unit 144 receives the multi-view image data MVD from the first memory 142 and receives the conversion parameters CP from the second memory 143. The data conversion unit 144 converts the view image data VD (i, j) of the jth (natural number satisfying 1? J? P) of the i-th line (i is a natural number satisfying 1? The conversion parameter CP is reflected in the adjacent view image data written in the subpixel closest to the subpixel in which the j-th view image data VD (i, j) of the i-th line is written, And converts the view image data VD (i, j). At this time, the j-th view image data VD (i, j) of the i-th line is written in the sub-pixel closest to the sub-pixel in which the j-th view image data VD (i, j) And image data of the same color as adjacent view image data. Hereinafter, the data conversion method of the data conversion unit 144 will be described in detail with reference to FIG.

6 is an exemplary view showing a display panel and an optical plate displaying seven view images. In FIG. 6, the subpixels of the display panel 10 represent seven view images. However, the present invention is not limited thereto. The subpixels of the display panel 10 may display n (n is a natural number of 2 or more) view images. In addition, in FIG. 6, the optical plate 30 is embodied as a slanted lens formed obliquely at a predetermined angle with respect to the sub-pixels of the display panel. However, the present invention is not limited thereto. The optical plate 30 may be implemented with a slanted barrier, a vertical lens formed in the vertical direction of the subpixels of the display panel, or a vertical barrier.

6, although each of the pixels P of the display panel has been described as including red, green, and blue sub-pixels R, G, and B, It should be noted that the present invention is not limited thereto. Each of the pixels P of the display panel may be implemented with red, green, blue, and white subpixels or with yellow, magenta, cyan, and magenta subpixels.

The subpixels of the display panel display the first to seventh view images V1 to V7. The slanted lens SL includes first through seventh lens regions LA1 through LA7. The k-th (k is a natural number satisfying 1? K? N) sub-pixels for displaying the k-th view image are arranged in the lens region LAk. Thus, the k-th lens region LAk refracts the k-th view image Vk into the k-th view region VPk. For example, the first lens area LA1 refracts the first view image V1 of the subpixels into the first view area VP1.

However, sub-pixels displaying view images adjacent to the k-th view image Vk are also arranged in the k-th lens area LAk. Therefore, the k-th view area LAk refracts the view images adjacent to the k-th view image Vk into the k-th view area VPk. At this time, if the subpixel displaying the kth view image Vk and the subpixel displaying the adjacent view images are subpixels of the same color, the kth view image Vk is influenced by the neighboring view images There is a problem to be received. That is, a 3D crosstalk may occur in which the view images adjacent to the k-th view image Vk are superimposed. For example, the first lens area LA1 is divided into a fifth subpixel SP5 of the second line L2 representing the first view image V1 and a fifth subpixel SP5 of the view image V1 adjacent to the first view image V1. The fifth subpixel SP5 of the third line L3 representing the seventh view image V7 or the fifth subpixel SP5 of the first line L1 displaying the two view images V2 1 view area Vp1. Because of this, the first view image V1 is affected by the second view image V2 and the seventh view image V7, so that 3D crosstalk may occur. Particularly, the fifth subpixel SP5 of the second line L2 representing the first view image V1, the fifth subpixel SP5 of the first line L1 representing the second view image V2, And the fifth subpixel SP5 of the third line L3 displaying the seventh view image V7 are subpixels of the same color, 3D crosstalk may occur.

The data conversion unit 144 reflects the conversion parameter CP to the view image data corresponding to the j-th view image data VD (i, j) of the i-th line and a view adjacent thereto, And converts the view image data VD (i, j). That is, the data conversion unit 144 converts the j-view image data VD (i, j) of the i-th line and the j-th view image data VD (i, j) J) view image data VD (i, j) of the ith line by reflecting the conversion parameter CP to the adjacent view image data written in the closest subpixel. At this time, the j-th view image data VD (i, j) of the i-th line is written in the sub-pixel closest to the sub-pixel in which the j-th view image data VD (i, j) And image data of the same color as adjacent view image data.

For example, as shown in FIG. 6, the first view image data is written to the subpixel closest to the fifth subpixel SP5 of the second line L2 to which the first view image data is written, The first view image data written to the fifth subpixel SP5 of the second line L2 is converted by reflecting the conversion parameter CP to the corresponding seventh view image data and the second view image data. That is, the first view image data written to the fifth subpixel SP5 of the second line L2 is the first view image data written to the fifth subpixel SP5 of the second line L2, The conversion parameter CP is added to the second view image data written to the fifth subpixel SP5 of the line L1 and the seventh view image data written to the fifth subpixel SP5 of the third line L3, To convert the first view image data written to the fifth subpixel SP5 of the second line L2. At this time, the first view image data written to the fifth subpixel SP5 of the second line L2, the second view image data written to the fifth subpixel SP5 of the first line L1, And the seventh view image data written to the fifth subpixel SP5 of the third line L3 are all red image data, so that they correspond to image data of the same color.

That is, since the k-th view image Vk can be predicted to be influenced by the view images adjacent thereto, the view image data to be written in the sub-pixel representing the k-th view image Vk The view image data to be written to the subpixels representing the k-th view image Vk is converted by reflecting the view image data to be written in the subpixels representing the view images. Therefore, the present invention can reduce the 3D crosstalk, thereby improving the quality of the stereoscopic image. (S103)

Fourth, the degamma correction unit 145 receives the multi-view image data MVD 'converted from the data conversion unit 144. The degamma correcting unit 145 corrects the transformed multi-view image data MVD 'having the linear gamma characteristic to the original gamma characteristic by inverse-transforming the multi-view image data MVD' Degamma correction is performed. In particular, the converted multi-view image data MVD 'in one frame period includes p × q converted view image data according to the resolution of the display panel 10. Accordingly, the degamma correction unit 145 performs an operation of Equation (2) on all of the p x q transformed view image data.

The degamma correction unit 145 replaces the converted multi-view image data MVD 'with a value obtained by squaring MVD' / 255 by 1 / 2.2. In Equation (2), the converted multi-view image data MVD 'is implemented in 8 bits, but it should be noted that the present invention is not limited thereto. That is, the converted multi-view image data MVD 'may be implemented with 10 bits.

5B is an exemplary diagram showing the degamma correction. Referring to FIG. 5B, the degamma correction unit 145 may correct the linear gamma of the converted multi-view image data MVD 'to a gamma curve by calculating the equation (2). The degamma corrector 145 outputs the degamma corrected transformed multi-view image data MVD 'to the timing controller 130. It should be noted that the degamma correction of the degamma correction unit 145 can be implemented by other known methods such as a method using a look-up table as well as a mathematical operation method using Equation (2). S104)

7 is a detailed block diagram of the data conversion unit of FIG. The data conversion unit 144 shown in Fig. 7 converts the j-th view image data VD (i, j) of the i-th line in the structure of the display panel 10 and the optical plate 30 shown in Fig. It should be noted that this is an optimized configuration. That is, it should be noted that the data conversion unit 144 according to the embodiment of the present invention is not limited to FIG.

7, the data conversion unit 144 converts the j-1 view image data VD (i-1, j-1) of the i-1th line, the j view image data VD (i, j) of the i-th line and the j + 1 view image data VD (i + 1, j + 1) j). This is because in the structure of Fig. 6, the view image data adjacent to the j-th view image data VD (i, j) of the i-th line is located in the i-1 and i + 1 lines. On the other hand, the view image data adjacent to the first view image data is the second view image data and the seventh view image data, and the view image data adjacent to the seventh view image data is the first view image data and the sixth view image data Be careful.

The data conversion unit 144 converts the j-th view image data VD (i, j) of the i-th line through a mathematical operation as shown in Equation (3).

In the equation (3), VD '(i, j) is the j-th view image data of the i-th line, VD (i, j) 1 is the (j + 1) th view image data of the (i + 1) th line, VD (i-1, j-1) is the j-1 view image data of the i-th line and? The transformation parameter? Is a parameter indicating the degree of light leaking from the adjacent view to the jth subpixel of the ith line. The conversion parameter? Has a value smaller than one. The closer the conversion parameter? Is to 1, the higher the 3D crosstalk tends to appear.

Referring to FIG. 7, the data converter 144 multiplies the first through fifth multipliers 201, 202, 203, 204, 205 and the first through third adders 301, 302, and 303, respectively. The first multiplier 201 multiplies the (j + 1) th view image data VD (i + 1, j + 1) of the (i + 1) th line by the conversion parameter?. The second multiplier 202 multiplies the (j-1) th view image data VD (i-1, j-1) of the (i-1) th line by the conversion parameter?. The third multiplier 203 multiplies the transformation parameter [alpha] by two. The fourth multiplier 204 multiplies the j-th view image data VD (i, j) of the i-th line by 2? Output from the third multiplier 203. The first adder 301 adds? VD (i-1, j-1) output from the second multiplier 202 to? VD (i + 1, j + 1) output from the first multiplier 201, Lt; / RTI > The fifth multiplier 205 multiplies (-1) by? VD (i + 1, j + 1) +? VD (i-1, j-1) output from the first adder 301. The second adder 302 multiplies the 2? X VD (i, j) output from the fourth multiplier 204 by {-α × VD (i + 1, j + 1) 1)}. The third adder 303 multiplies the 2? X VD (i, j) -α VD (i + 1, j + 1) -α VD (i-1, j-1) output from the second adder 302 To VD (i, j). Accordingly, the data conversion unit 144 converts the j-th view image data VD (i, j) of the i-th line into 2α × VD (i, j) -α × VD (i + 1, j +1) -α x VD (i-1, j-1) + VD (i, j).

As described above, the present invention predicts that the k-th view image is affected by the view images adjacent thereto, and displays the view images adjacent thereto in the view image data to be written in the sub-pixel displaying the k-th view image And reflects the view image data to be written to the subpixels. As a result, the present invention can prevent the user from viewing the k-th view image as well as the adjacent view image in the k-th view region, thereby reducing 3D crosstalk. Accordingly, the present invention can improve the quality of a stereoscopic image viewed by a user.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the present invention should not be limited to the details described in the detailed description, but should be defined by the claims.

10: display panel 30: optical plate
110: gate driving circuit 120: data driving circuit
130: timing controller 140:
141: gamma correction unit 142: first memory
143: second memory 144: data conversion section
145: degamma correction unit 150: host system
201: first multiplier 202: second multiplier
203: third multiplier 204: fourth multiplier
205: fifth multiplier 301: first adder
302: second adder 303: third adder

Claims (10)

A display panel for displaying a multi-view image including first to n-th (n is a natural number of 2 or more) view images;
An optical plate for separating the first to n-th view images into first to n-th view areas;
view video data including p × q (p, q is a natural number) view image data, and a jth (i is a natural number satisfying 1≤i≤p) (j is 1≤j I < = q) and the adjoining view image data written in the subpixel closest to the subpixel in which the jth view image data of the i-th line is written, A data processing unit for converting view image data;
A data driving circuit for converting the multi-view image data converted from the data processing unit into analog data voltages and supplying the data to the data lines of the display panel; And
And a gate driving circuit for sequentially supplying gate pulses to the gate lines of the display panel,
And the adjacent view image data written in the subpixel closest to the subpixel in which the j th view image data of the i th line and the j th view image data of the i th line are written are image data of the same color. Device. The method according to claim 1,
Wherein the conversion parameter indicates a degree to which light is leaked from the adjacent view to the jth sub-pixel of the i-th line. The method according to claim 1,
Wherein the data processing unit comprises:
A gamma correcting unit for correcting gamma curves of multi-view image data by linear gamma correction;
A first memory for storing multi-view image data subjected to gamma correction by the gamma correction unit;
A second memory for storing the conversion parameter;
Wherein the first memory receives the j view image data of the i th line and the jth view image data of the i th line and receives adjacent view image data written in the subpixel closest to the subpixel from which the j view image data of the i th line is written, A data conversion unit for receiving the conversion parameter and converting the j-th view image data of the i-th line; And
And a de-gamma correction unit for correcting the converted multi-view image data using a gamma curve. The method of claim 3,
Wherein the optical plate is implemented in a slanting manner in which the optical plate is obliquely formed at a predetermined angle with respect to the sub-pixels of the display panel. 5. The method of claim 4,
Wherein the data conversion unit comprises:
(I, j) of the i-th line, VD (i, j) of the j-th view image data of the ith line, and (j + 1) Th view-view image data VD (i-1, j-1) of the i-th line and VD (i-1, j-1)
The j-th view image data of the converted i-

Th line image data of the i-th line so as to satisfy the i-th line image data. A display panel for displaying a multi-view image including first to n-th (n is a natural number) view images, and an optical plate for dividing the first to n-th view images into first to n-th view regions, A method of driving a stereoscopic image display device,
view video data including p × q (p, q is a natural number) view image data, and a jth (i is a natural number satisfying 1≤i≤p) (j is 1≤j I < = q) and the adjoining view image data written in the subpixel closest to the subpixel in which the jth view image data of the i-th line is written, Converting view image data;
Converting the converted multi-view image data into analog data voltages and supplying the analog data voltages to the data lines of the display panel; And
Sequentially supplying gate pulses to the gate lines of the display panel,
And the adjacent view image data written in the subpixel closest to the subpixel in which the j th view image data of the i th line and the j th view image data of the i th line are written are image data of the same color. A method of driving a device. The method according to claim 6,
Wherein the conversion parameter indicates a degree of light leaking from the adjacent view to the jth subpixel of the i-th line. The method according to claim 6,
The step of converting the j-th view video data of the i-
Correcting a gamma curve of multi-view image data with linear gamma;
Storing the gamut-corrected multi-view image data with the linear gamma in a first memory;
Storing the conversion parameter in a second memory;
Wherein the first memory receives the j view image data of the i th line and the jth view image data of the i th line and receives adjacent view image data written in the subpixel closest to the subpixel from which the j view image data of the i th line is written, Converting the j view image data of the i-th line after receiving the conversion parameter; And
And correcting the converted multi-view image data to a gamma curve by using linear gamma. 9. The method of claim 8,
Wherein the optical plate is implemented in a slanting manner in which the optical plate is obliquely formed at a predetermined angle with respect to subpixels of the display panel. 10. The method of claim 9,
The step of converting the j-th view video data of the i-
(I, j) of the i-th line, VD (i, j) of the j-th view image data of the ith line, and (j + 1) Th view-view image data VD (i-1, j-1) of the i-th line and VD (i-1, j-1)
The j-th view image data of the converted i-

Th view image data of the i-th line so as to satisfy the following expression: < EMI ID = 17.0 >

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