KR101646494B1 - Stereoscopic image display device, and driving apparatus the same - Google Patents

Abstract

An embodiment of the present invention relates to a stereoscopic image display apparatus and a driving apparatus thereof that can improve the brightness of a two-dimensional image and enhance the image quality of a three-dimensional image. A stereoscopic image display apparatus according to an exemplary embodiment of the present invention includes a plurality of unit pixels formed to include a plurality of sub pixels and dummy pixels having an area smaller than the sub pixels, a plurality of color filters A dummy region formed to correspond to the dummy pixel, and a light shielding region formed to define each of the plurality of color filter regions and the dummy region. The stereoscopic image display apparatus according to an embodiment of the present invention is configured to separate a plurality of unit pixels into a left eye image area and a right eye image area, and is configured to change a light passing through each of the left eye image area and the right eye image area to different optical axes Member.

Description

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

The present invention relates to a stereoscopic image display apparatus, and more particularly, to a stereoscopic image display apparatus and a driving apparatus thereof that can improve the brightness of a two-dimensional image and enhance the image quality of a three-dimensional image.

As the modern society becomes highly informed, the display device is facing the market demand for large-sized and thinned. In response to this demand, demand for various types of flat panel display devices having advantages of thinning, light weight, Is explosively increasing.

As a flat panel display device, a liquid crystal display device, a plasma display panel (PDP), a field emission display device, a light emitting display device and the like are actively studied However, the liquid crystal display device is in the spotlight due to the advantages of mass production technology, ease of driving means, and realization of high image quality.

In recent years, a stereoscopic image display device has been developed in which a viewer can view a stereoscopic three-dimensional image in a two-dimensional image displayed on a display device.

The stereoscopic image display device is a device for displaying a left eye image and a right eye image having binocular parallax in a left eye and a right eye of a viewer, respectively. That is, the stereoscopic image display apparatus allows the left eye image to be recognized only in the left eye of the viewer, and allows the viewer to view the stereoscopic three-dimensional image by allowing the right eye image to be recognized only in the viewer's right.

However, in the conventional stereoscopic image display apparatus, although the left eye image should be recognized only in the left eye of the viewer, there is a case that the left eye image is recognized in the right eye of the viewer. Accordingly, the conventional stereoscopic image display device has a problem that the image quality is deteriorated due to cross talk between the left eye image and the right eye image, which are perceived in the right eye of the viewer.

The present invention provides a stereoscopic image display apparatus and a driving apparatus thereof that can improve the brightness of a two-dimensional image and enhance the image quality of a three-dimensional image.

According to an aspect of the present invention, there is provided a stereoscopic image display apparatus including a plurality of unit pixels formed to include a plurality of sub pixels and dummy pixels having an area smaller than the sub pixels, a color filter corresponding to the plurality of sub pixels, A dummy region formed so as to correspond to the dummy pixel, and a plurality of unit pixels divided into a left eye image region and a right eye image region, the light passing through each of the left eye image region and the right eye image region being different from each other And an optical axis changing member for changing the optical axis to an optical axis.

According to an aspect of the present invention, there is provided a driving apparatus for a stereoscopic image display device including a plurality of unit pixels including a plurality of subpixels and dummy pixels having an area smaller than the subpixels, A dummy region corresponding to the dummy pixel, and a plurality of unit pixels into a left eye image region and a right eye image region. A data processing unit for generating two-dimensional image data and two-dimensional dummy data based on the input data, generating three-dimensional image data and three-dimensional dummy data, and a data processing unit for supplying the two- And a panel driver for displaying the two-dimensional image on the display panel, supplying the three-dimensional image data to the sub-pixels and supplying the three-dimensional dummy data to the dummy pixels, and displaying the three- .

As described above, the stereoscopic image display apparatus and the driving apparatus thereof according to the present invention have the following effects.

First, a dummy pixel is formed in each unit pixel and a black matrix is formed in a dummy area corresponding to the dummy pixel, thereby preventing confusion between the left eye image and the right eye image through the black matrix in displaying the three-dimensional image, Can be improved.

Second, by forming dummy pixels in each unit pixel, a dummy image is displayed on a dummy pixel when displaying a two-dimensional image, thereby improving the brightness of the two-dimensional image. By displaying a black image in a dummy pixel when displaying a three- It is possible to prevent confusion between the left eye image and the right eye image through the image, thereby improving the image quality of the three-dimensional image.

1 is a perspective view schematically showing a part of a stereoscopic image display apparatus according to a first embodiment of the present invention.
2 is a cross-sectional view showing a cross section of the AA line shown in Fig.
3 is a perspective view schematically showing a part of a stereoscopic image display apparatus according to a second embodiment of the present invention.
4 is a perspective view schematically showing a part of a stereoscopic image display apparatus according to a third embodiment of the present invention.
5 is a cross-sectional view showing a cross section of the BB line shown in Fig.
6 is a perspective view schematically showing a part of a stereoscopic image display apparatus according to a fourth embodiment of the present invention.
7 is a perspective view schematically showing a driving apparatus of a stereoscopic image display apparatus according to an embodiment of the present invention.
8 is a diagram for schematically explaining the configuration of the timing control unit shown in FIG.
FIG. 9 is a diagram for schematically explaining the configuration of the data processing unit shown in FIG.

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

FIG. 1 is a perspective view schematically showing a part of a stereoscopic image display apparatus according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A of FIG.

1 and 2, the stereoscopic image display apparatus according to the first embodiment of the present invention includes a lower substrate 110, a lower polarizer 112, an upper substrate 120, an upper polarizer 122, a liquid crystal layer (Not shown), and an optical axis changing member 130.

The lower substrate 110 includes a plurality of gate lines GL, a plurality of data lines DL, and a plurality of unit pixels UP.

The plurality of gate lines GL are formed to be spaced apart from each other at regular intervals along the first direction of the lower substrate 110. The plurality of gate lines GL are supplied with a gate signal from the outside.

The plurality of data lines GL are formed to be spaced apart at regular intervals along a second direction crossing the plurality of gate lines GL. The plurality of data lines GL are supplied with data signals from the outside. At this time, the data signal corresponds to the two-dimensional image data or corresponds to the three-dimensional image data.

Each of the plurality of unit pixels UP includes a plurality of subpixels P1 to P3 and dummy pixels P4 formed for each pixel region defined by the intersection of the plurality of gate lines GL and the plurality of data lines DL .

Each of the plurality of subpixels P1 to P3 may be composed of a red subpixel P1, a green subpixel P2, and a blue subpixel P3. At this time, the red subpixel P1, the green subpixel P2, and the blue subpixel P3 are repeatedly arranged to correspond to the longitudinal direction of the gate line GL, And is formed in a rectangular shape having long sides parallel to the longitudinal direction of the data lines DL. Each of the plurality of subpixels P1 to P3 includes a thin film transistor T formed to be connected to an adjacent gate line GL and a data line DL adjacent thereto, a pixel electrode PE formed to be connected to the thin film transistor T, And a common electrode (not shown) formed to face the pixel electrode PE.

The thin film transistor T is switched in accordance with a gate signal supplied from the gate line GL to supply a data signal supplied from the data line DL to the pixel electrode PE.

The pixel electrode PE forms an electric field corresponding to a data signal supplied through the thin film transistor T to control the amount of light transmitted through the liquid crystal layer.

The common electrodes are formed between the pixel electrodes PE so as to be spaced apart from the pixel electrodes PE at regular intervals. The common electrode is supplied with a reference voltage from the outside. At this time, the common electrode may be formed on the upper substrate 120 so as not to be formed on the lower substrate 110 but to face the pixel electrode PE.

Each of the plurality of sub-pixels P1 to P3 forms an electric field corresponding to a difference voltage between a data signal supplied from the data line DL and a reference voltage supplied to the common electrode in response to a gate signal supplied from the gate line GL Thereby controlling the amount of light transmitted through the liquid crystal layer.

The dummy pixel P4 is formed to have the same rectangular shape as the plurality of subpixels P1 to P3 for each pixel region adjacent to the blue subpixel P3. At this time, the dummy pixel P4 is formed to have an area smaller than each of the sub-pixels P1 to P3. For example, the area of the dummy pixel P4 is preferably set within 30% of the subpixels P1 to P3. The dummy pixel P4 is a dummy region in which the thin film transistor T, the pixel electrode PE and the common electrode are not formed unlike the plurality of sub pixels P1 to P3, .

The lower polarizer 112 is attached to a back surface of the lower substrate 110, that is, a surface opposite to the back light unit, to polarize light incident from the back light unit to the lower substrate 110.

The lower substrate 110 may include a plurality of unit pixels UP in accordance with a gate signal supplied to the gate line GL, a two-dimensional image data supplied to the data line DL, or a data signal corresponding to the three- The sub pixels P1 to P3 of the liquid crystal layer are controlled to adjust the light transmission amount of the liquid crystal layer.

The upper substrate 120 is configured to include a plurality of color filter regions CFA, a dummy region DMA, a light shielding region BM, and an overcoat layer 124.

The plurality of color filter regions CFA includes red, green, and blue color filter regions RCF, GCF, and BCF formed to correspond to each of the plurality of subpixels P1 to P3.

A red color filter is formed in the red color filter region RCF, a green color filter is formed in the green color filter region GCF, and a blue color filter is formed in the blue color filter region BCF.

The red color filter region RCF transmits only the red light in the white light transmitted through the liquid crystal layer corresponding to the blue subpixel P1.

The green color filter region GCF transmits only the green light in the white light transmitted through the liquid crystal layer corresponding to the green subpixel P2.

The blue color filter region BCF transmits only the blue light in the white light transmitted through the liquid crystal layer corresponding to the blue subpixel P3.

On the other hand, in the plurality of color filter regions CFA, different color filters are repeatedly formed along the longitudinal direction of the gate line GL, and the same color filter is repeatedly formed along the longitudinal direction of the data line DL.

The dummy area DMA is formed between the blue color filter area BCF and the red color filter area RCF of the adjacent unit pixel UP so as to correspond to the dummy pixel P4.

The light blocking region BM is composed of a first black matrix BM1 and a second black matrix BM2.

The first black matrix BM1 is formed at the boundary of the plurality of color filter regions CFA to optically separate adjacent color filter regions CFA by defining each of the plurality of color filter regions CFA.

The second black matrix BM2 is formed in the dummy area DMA to optically separate the adjacent color filter areas CFA.

The overcoat layer 124 is formed to have a predetermined thickness such that the entire surface of the plurality of color filter areas CFA, the dummy area DMA, and the shielding area BM is flat. On the other hand, an alignment film for alignment of the liquid crystal layer may be formed on the overcoat layer 124.

The upper polarizer 122 is formed on a front surface of the upper substrate 120, i.e., a surface not in contact with the liquid crystal layer, to polarize light transmitted through the upper substrate 120.

The upper substrate 120 transmits red light, green light, and blue light through a plurality of color filter regions CFA formed to correspond to each of the plurality of subpixels P1 to P3, thereby forming a predetermined color image . At this time, the second black matrix BM2 formed in the dummy area DMA of the upper substrate 120 optically separates adjacent unit pixels UP.

The above-described lower substrate 110 and upper substrate 120 are bonded together with a liquid crystal layer interposed therebetween.

The optical axis changing member 130 is formed on the upper polarizer 122 to divide a plurality of unit pixels UP into a left eye image area and a right eye image area. To this end, the optical axis changing member 130 includes a plurality of left eye retarders 132 and a plurality of right eye retarders 134 alternately formed to have different optical axes. Meanwhile, the optical axis changing member 130 may be formed in a film form so as to include a plurality of left eye retarders 132 and a plurality of right eye retarders 134, and may be attached on the upper polarizer plate 122.

The plurality of left eye retarders 132 are arranged in the longitudinal direction of the data line DL for each of the left eye image areas corresponding to the odd-numbered unit pixels among the plurality of unit pixels UP arranged in the longitudinal direction of the gate line GL . The plurality of left eye retarders 132 change the optical axis of the light transmitted through the left eye image area according to the driving of the odd-numbered unit pixels, And provides the image LI to the viewer's left eye.

The plurality of right eye retarders 134 are arranged in the longitudinal direction of the data line DL for each right eye image region corresponding to even-numbered unit pixels among a plurality of unit pixels UP arranged in the longitudinal direction of the gate line GL . The plurality of right eye retarders 134 change the optical axis of the light transmitted through the right eye image region according to driving of the even-numbered unit pixels, thereby changing the direction of the right eye image of the three- And provides the image RI to the viewer's right side.

The boundary between the left eye retarder 132 and the right eye retarder 134 is formed to overlap the dummy area DMA.

The plurality of left-eye retarders 132 and the right-eye retarders 134 are arranged so that the left-eye image LI displayed in the left-eye image area and the right-eye image RI displayed in the right- To the viewer.

The plurality of left-eye retarders 132 and the right-eye retarders 134 are not formed on the upper polarizer 122, but are formed on the rear surface of a separate cover substrate (not shown) And may be attached to the polarizing plate 122.

In the above description, the plurality of left retarders 132 and the plurality of right retarders 134 are formed so as to alternate in the unit pixel UP along the longitudinal direction of the data line DL However, the present invention is not limited thereto. The gate lines GL may be alternately arranged in the longitudinal direction of the gate lines GL.

In the stereoscopic image display apparatus according to the first embodiment of the present invention, a dummy pixel P4 is formed in each of the plurality of unit pixels UP, and a dummy pixel P4 corresponding to the dummy pixel P4 is formed. The second black matrix BM2 is formed to separate the left eye image region and the right eye image region through the second black matrix BM2.

Accordingly, as shown in FIG. 2, the stereoscopic image display apparatus according to the first embodiment of the present invention is capable of moving from the left eye image area to the right eye image area through the second black matrix BM2 when displaying a three- , Blocking the light traveling from the right eye image region to the left eye image region to prevent cross talk between the left eye image (LI) and the right eye image (RI), thereby improving the image quality of the three-dimensional image.

In addition, the stereoscopic image display apparatus according to the first embodiment of the present invention reduces the area of each of the plurality of sub-pixels P1, P2, and P3 constituting the unit pixel UP, P2, and P3, thereby preventing the crossing of the left eye image LI and the right eye image RI, thereby preventing the aperture ratio from dropping at the time of displaying the three-dimensional image.

3 is a perspective view schematically illustrating a part of a stereoscopic image display apparatus according to a second embodiment of the present invention.

Referring to FIG. 3, the stereoscopic image display apparatus according to the second embodiment of the present invention includes a red subpixel P1, a green subpixel P1, Pixels P3 to P4 corresponding to the sub-pixels P1 to P4 are repeatedly arranged so as to correspond to the longitudinal direction of the data lines DL and the blue sub-pixels P2, P3, Shielding region BM, and the direction of forming the optical axis changing member 130 are the same, the detailed description of the same configuration will be omitted.

Each of the red subpixel P1, the green subpixel P2, the blue subpixel P3 and the dummy pixel P4 is repeatedly arranged to correspond to the longitudinal direction of the data line DL, As shown in FIG. Each of the red subpixel P1, the green subpixel P2, the blue subpixel P3 and the dummy pixel P4 has a long side parallel to the longitudinal direction of the gate line GL and a length of the data line DL Direction and a short side parallel to the direction.

Each of the red subpixel P1, the green subpixel P2 and the blue subpixel P3 is sequentially driven in accordance with the gate signal supplied from the gate line GL to be supplied from the data line DL And controls the light transmission amount of the liquid crystal layer by driving the liquid crystal layer according to the supplied data signal.

Each of the plurality of color filter regions CFA includes a red color filter region RCF, a green color filter region GCF corresponding to red subpixel P1, green subpixel P2, and blue subpixel P3, , And a blue color filter region (BCF). At this time, the plurality of color filter regions CFA are repeatedly formed with different color filters repeatedly along the longitudinal direction of the data lines DL, and the same color filters are repeatedly formed along the longitudinal direction of the gate lines GL.

The above-described first black matrix BM1 is formed at the boundary of each of the red color filter region RCF, the green color filter region GCF and the blue color filter region BCF.

The dummy area DMA is formed to correspond to the dummy pixel P4 to optically separate adjacent color filter areas CFA. To this end, the second black matrix BM2 described above is formed in the dummy area DMA.

The optical axis changing member 130 is for separating a plurality of unit pixels UP into a left eye image area and a right eye image area as in the first embodiment of the present invention, A plurality of left eye retarders 132 and a plurality of right eye retarders 134. [

The plurality of left eye retarders 132 are arranged in the longitudinal direction of the gate line GL for each of the left eye image areas corresponding to the odd-numbered unit pixels among the plurality of unit pixels UP arranged in the longitudinal direction of the data line DL . The plurality of left eye retarders 132 change the optical axis of the light transmitted through the left eye image area according to the driving of the odd-numbered unit pixels, And provides the image LI to the viewer's left eye.

The plurality of right eye retarders 134 are aligned in the longitudinal direction of the gate line GL for every right eye image region corresponding to even-numbered unit pixels among a plurality of unit pixels UP arranged in the longitudinal direction of the data line DL . The plurality of right eye retarders 134 change the optical axis of the light transmitted through the right eye image region according to driving of the even-numbered unit pixels, thereby changing the direction of the right eye image of the three- And provides the image RI to the viewer's right side.

As described above, the stereoscopic image display device according to the second embodiment of the present invention provides the same effect as the first embodiment of the present invention, and reduces the number of data lines DL by 1/3, The cost of the driving circuit for driving the data lines DL can be reduced.

FIG. 4 is a perspective view schematically illustrating a part of a stereoscopic image display apparatus according to a third embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line B-B of FIG.

4 and 5, a stereoscopic image display device according to a third embodiment of the present invention includes a dummy pixel P4, a dummy area DMA, and a shading area BM , The description of the remaining configuration except for the dummy pixel P4, the dummy area DMA, and the shielding area BM will be replaced with the description of the first embodiment of the present invention described above.

The dummy pixel P4 is formed to have the same rectangular shape as the plurality of subpixels P1 to P3 for each pixel region adjacent to the blue subpixel P3. At this time, the dummy pixel P4 is formed to have an area smaller than each of the sub-pixels P1 to P3. For example, the area of the dummy pixel P4 is preferably set within 30% of the subpixels P1 to P3.

The dummy pixel P4 displays a black image when the three-dimensional image, that is, the left eye image or the right eye image, is displayed on each of the subpixels P1 to P3 of the unit pixel UP, When a two-dimensional image is displayed on the sub-pixels P1 to P3, a dummy image according to the two-dimensional image is displayed. Here, the dummy image has the same gray level as the two-dimensional image when the two-dimensional images displayed on the sub-pixels P1 to P3 of the unit pixel UP are all the same, whereas when at least one of the two- And has a black gradation. For example, when each of the red data, green data, and blue data of the two-dimensional image displayed in each of the sub-pixels P1 to P3 of the unit pixel UP has a gray level of "110", the dummy image is "110 " On the other hand, when each of the red data, green data, and blue data of the two-dimensional image has gradations of "110", "110", and "120", the dummy image has black gradations (for example, "000" .

To this end, the dummy pixel P4 is configured to include a thin film transistor T, a pixel electrode PE, and a common electrode (not shown) in the same manner as the plurality of subpixels P1 to P3, And controls the transmittance of the light traveling to the dummy area (DMA) by driving the liquid crystal layer in accordance with the dummy data signal corresponding to the black image or the dummy image supplied from the data line DL in response to the gate signal supplied from the data line DL.

The dummy area DMA is formed so as to correspond to the dummy pixel P4, and allows light passing through the liquid crystal layer to pass therethrough as the dummy pixel P4 is driven. For this, a color filter is not formed in the dummy area (DMA).

The shading area BM is formed at the boundary of each of the plurality of color filter areas CFA except for the dummy area DMA to define a plurality of color filter areas CFA and a dummy area DMA. To this end, a black matrix for blocking light is formed in the light blocking region BM.

The stereoscopic image display apparatus according to the third embodiment of the present invention optically separates adjacent unit pixels UP by displaying a black image on a dummy pixel P4 when displaying a three dimensional image, ) And the right eye image RI are prevented from being mixed with each other, and only when the two-dimensional images displayed on the sub-pixels P1 to P3 are all the same when the two-dimensional image is displayed, Is displayed on the dummy pixel P4, the luminance of the two-dimensional image can be improved.

6, each of the dummy pixel P4, the dummy area DMA, and the light-shielding area BM in the stereoscopic image display device according to the third embodiment of the present invention includes the above- The present invention is equally applicable to a stereoscopic image display device according to the second embodiment of the present invention. Accordingly, the stereoscopic image display apparatus according to the third embodiment of the present invention shown in FIG. 6 can provide the effects of the second and third embodiments of the present invention described above.

7 is a schematic view for explaining a part of a driving apparatus of a stereoscopic image display apparatus according to an embodiment of the present invention.

Referring to FIG. 7, a driving apparatus of a stereoscopic image display apparatus according to an exemplary embodiment of the present invention includes a display panel 100, a timing controller 200, and panel drivers 300 and 400.

The display panel 100 displays a two-dimensional image or a three-dimensional image by controlling the amount of light transmitted from a backlight unit (not shown) according to the driving of the panel driving units 300 and 400 under the control of the timing controller 200 do. 1, the display panel 100 includes a lower substrate 110, a lower polarizer 112, an upper substrate 120, an upper polarizer 122, and an upper substrate 120 of a stereoscopic image display device according to the first embodiment of the present invention, ), A liquid crystal layer (not shown), and an optical axis changing member 130. Thus, the description of the display panel 100 will be replaced with the above description.

The display panel 100 includes a lower substrate 110, a lower polarizer 112, an upper substrate 120, and a lower substrate 120, which are selected from the second through fourth embodiments of the present invention shown in FIGS. ), An upper polarizer plate 122, a liquid crystal layer (not shown), and an optical axis changing member 130.

The timing control unit 200 includes a control signal generation unit 210 and a data processing unit 220 as shown in FIG.

The control signal generator 210 uses a timing synchronization signal TSS such as data enable DE, a dot clock DCLK, a vertical synchronization signal Vsync and a horizontal synchronization signal Hsync input through a user connector A gate control signal GCS for controlling the driving timing of the gate driving circuit unit 300 and a data control signal DCS for controlling the driving timing of the data driving circuit unit 400 are generated.

The gate control signal GCS may be a gate start pulse, a plurality of gate clock signals, or the like.

The data control signal DCS may be a source start pulse, a source sampling clock, a source output enable, and a polarity control signal POL.

The data processing unit 220 generates two-dimensional image data (2D_data1) and two-dimensional dummy data (2D_data2) based on the input data (RGB) or generates three-dimensional image data (3D_data1) and three- do. The data processor 220 includes a mode signal generator 222, a data generator 224, and a data transmitter 226, as shown in FIG.

The mode signal generator 222 generates a two-dimensional mode signal MS having a first logic state or a second logic state inverted to a first logic state according to a user's mode selection (UMS) or input data (RGB) And generates a three-dimensional mode signal MS. For example, when a user selects a display mode of a two-dimensional image, a two-dimensional mode signal MS having a first logic state is generated. When the user selects a display mode of the three-dimensional image, Dimensional mode signal MS. The mode signal generating unit 222 generates a three-dimensional mode signal MS having a second logic state when the input data RGB is separated and input into the left eye image and the right eye image, And generates a two-dimensional mode signal MS having a first logic state.

The data generation unit 224 generates the two-dimensional image data 2D_data1 and the two-dimensional dummy data 2D_data2 according to the two-dimensional mode signal MS generated from the mode signal generation unit 222, Dimensional image data (3D_data1) and three-dimensional dummy data (3D_data2) according to the three-dimensional mode signal (MS), and supplies the three-dimensional image data (3D_data1) and the three- To this end, the data generating unit 224 includes a data arranging unit 252 and a dummy data generating unit 254.

The data sorting unit 252 arranges the input data RGB in the two-dimensional image data 2D_data1 according to the two-dimensional mode signal MS, or arranges the input data RGB in three dimensions (3D_data1). Here, the two-dimensional image data (2D_data1) is supplied to each of the sub-pixels (P1, P2, P3) of the unit pixel (UP) Lt; / RTI > The 3D image data 3D_data1 is supplied to each of the subpixels P1, P2, and P3 of the odd-numbered unit pixels UP to display the left-eye image, and the even- UP and the sub-pixels P1, P2, and P3, respectively, in order of red, green, and blue to display a right eye image.

The dummy data generation unit 254 generates three-dimensional dummy data (3D_data2) in accordance with the three-dimensional mode signal (MS) Dimensional dummy data (2D_data2) by analyzing the data (2D_data1). Here, the 3D dummy data (3D_data2) is supplied to the dummy pixel P4 of the unit pixel UP to have a black gradation for displaying a black image. When two-dimensional image data (2D_data1) aligned so as to correspond to the subpixels (P1, P2, P3) of the unit pixel UP are all the same, the two-dimensional dummy data (2D_data2) When any one of two-dimensional image data (2D_data1) having the same gray level as any one of the image data (2D_data1) and aligned to correspond to the subpixels (P1, P2, P3) of the unit pixel (UP) . Here, the two-dimensional dummy data 2D_data2 may have the average gradation of the aligned two-dimensional image data 2D_data1, but in this case, since the white balance of the unit pixels UP may be non-uniform, 2D_data1) are different from each other, it is preferable to have a black gradation.

The data transfer unit 226 transfers the two-dimensional image data (2D_data1) supplied from the data arrangement unit 252 and the two-dimensional dummy data (2D_data2) supplied from the dummy data generation unit 254 according to the two- And the dummy pixel P4 are supplied to the sub-pixels P1, P2 and P3 and the dummy pixels P4 of the unit pixels UP and transmitted to the panel driving unit, The supplied 3D image data 3D_data1 and the 3D dummy data 3D_data2 supplied from the dummy data generation unit 254 are supplied to the subpixels P1, P2, and P3 of each unit pixel UP and the dummy pixels P4, And transmits them to the panel driver. At this time, the data transfer unit 226 transmits data according to the interface method with the set panel driving unit. For example, the interface method may be a low voltage differential signaling (LVDS) method or a mini-LVDS (low voltage differential signaling) method.

7, the panel driver supplies two-dimensional image data (2D_data1) supplied from the data processing unit 220 to each of the subpixels P1, P2, and P3 according to the two-dimensional mode signal MS, Dimensional image data (3D_data1) supplied from the data processing unit 220 according to the three-dimensional mode signal (MS) to the dummy pixel (P4) by displaying the two- And supplies the three-dimensional dummy data (3D_data2) to the dummy pixel (P4) to display the three-dimensional image on the display panel (100). To this end, the panel driving unit includes a gate driving circuit unit 300 and a data driving circuit unit 400.

The gate driving circuit unit 300 generates a gate signal according to the gate control signal GCS supplied from the timing controller 200 and sequentially supplies the gate signal to the gate line GL. To this end, the gate driving circuit unit 300 may include a plurality of gate driving integrated circuits that generate gate signals according to the gate control signals GCS and sequentially supply the gate signals to the gate lines GL. At this time, the plurality of gate driving integrated circuits are mounted on a gate circuit film (not shown) and connected to the display panel 100, or mounted on the display panel 100 in a chip form by a chip on glass .

Meanwhile, the gate driving circuit unit 300 may be formed directly on the display panel 100 at the same time as the forming process of the thin film transistor by the gate in panel method.

The data driving circuit 400 receives the two-dimensional image data (2D_data1) and the two-dimensional image data (2D_data1) supplied from the timing controller 200 in response to the data control signal DCS supplied from the timing controller 200 according to the two- Dimensional dummy data (2D_data2) or three-dimensional image data (3D_data1) and three-dimensional dummy data (3D_data2) are converted into analog data signals and supplied to the data lines (DL) Dimensional image.

Specifically, the data driving circuit unit 400 supplies the two-dimensional image data signals corresponding to the two-dimensional image data (2D_data1) and the two-dimensional dummy data (2D_data2) in the display mode of the two- And supplies it to the pixels P1, P2, and P3 and the dummy pixel P4 to display a two-dimensional image on the display panel 100. [ At this time, the luminance of the two-dimensional image displayed on the display panel 100 is set such that two-dimensional dummy data (2D_data2) having the same gray level as the two-dimensional image data (2D_data1) is supplied to the dummy pixels .

On the other hand, the data driving circuit unit 400 supplies the three-dimensional image data signal corresponding to the three-dimensional image data (3D_data1) in the display mode of the three-dimensional image to the subpixels (P1, P2, P3) And simultaneously supplies the dummy data signal corresponding to the three-dimensional dummy data (3D_data2) to the dummy pixel (P4) of the corresponding unit pixel (UP). Accordingly, the subpixels P1, P2, and P3 of the odd-numbered unit pixels among the plurality of unit pixels UP arranged in the longitudinal direction of the gate line GL display the left eye image, The pixels P1, P2, and P3 display the right eye image. At this time, the dummy pixels P4 of each unit pixel UP display a black image, thereby optically separating the left eye image and the right eye image, thereby preventing confusion between the left eye image and the right eye image.

In the driving apparatus of the stereoscopic image display apparatus according to the embodiment of the present invention, the dummy pixel P4 is formed for each unit pixel UP, so that the dummy pixel P4 is displayed on the dummy pixel P4 (LI) and the right eye image (RI) by optically separating adjacent unit pixels UP by displaying a black image on the dummy pixel P4 of the three-dimensional image display P4, The image quality of the three-dimensional image can be improved.

In addition, the driving apparatus of the stereoscopic image display apparatus according to the embodiment of the present invention reduces the area of each of the plurality of sub-pixels P1, P2, and P3 constituting the unit pixel UP, P2, and P3 to prevent cross talk between the left eye image LI and the right eye image RI, thereby preventing a decrease in the aperture ratio at the time of displaying the three-dimensional image .

Meanwhile, in the above-described three-dimensional image display apparatus and the driving apparatus of the present invention, a plurality of sub pixels and one dummy pixel of the liquid crystal display device are constituted by one unit pixel, and a black matrix is formed in a dummy area corresponding to the dummy pixel A dummy image is displayed on a dummy pixel, but the present invention is not limited to this. In addition to a liquid crystal display device, a plasma display panel, a field emission display device, a light emitting display device ) Or the like, or a cathode ray tube (CRT).

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: display panel 110: lower substrate
112: lower polarizer 120: upper substrate
122: upper polarizer 130: optical axis changing member
132: Left eye retarder 134: Right eye retarder
200: timing control unit 220: data processing unit
222: mode signal generator 224:
226: data transferring unit 252:
254: dummy data generation unit 300: gate drive circuit
400: Data driving circuit

Claims (16)

A plurality of unit pixels having a plurality of subpixels;
A dummy pixel provided between the plurality of unit pixels and having an area smaller than the sub-pixel;
A plurality of color filter regions in which color filters corresponding to the plurality of subpixels are formed;
A dummy region formed to correspond to the dummy pixel; And
And an optical axis changing member formed to separate the plurality of unit pixels into a left eye image area and a right eye image area and changing light passing through each of the left eye image area and the right eye image area to different optical axes. The method according to claim 1,
Further comprising a light shielding region formed to define each of the plurality of color filter regions and the dummy region,
The light-
A first black matrix formed at a boundary of the plurality of color filter regions to define the plurality of color filter regions; And
And a second black matrix formed on the dummy area. 3. The method of claim 2,
A plurality of gate lines and a plurality of data lines formed to intersect with each other and defining the plurality of sub pixels and the dummy pixels;
A thin film transistor formed in each of the plurality of subpixels to be connected to a data line adjacent to an adjacent gate line; And
And a pixel electrode formed to be connected to the thin film transistor. The method according to claim 1,
Further comprising a light shielding region formed to define each of the plurality of color filter regions and the dummy region,
Wherein the light shielding region includes a black matrix formed at a boundary portion of the plurality of color filter regions so as to define the plurality of color filter regions except for the dummy region. 5. The method of claim 4,
A plurality of gate lines and a plurality of data lines formed to intersect with each other and defining the plurality of sub pixels and the dummy pixels;
A thin film transistor formed in each of the plurality of sub pixels and the dummy pixel so as to be connected to a data line adjacent to the adjacent gate line; And
And a pixel electrode formed to be connected to the thin film transistor. The method according to claim 3 or 5,
Wherein the color filters are formed in different colors along the longitudinal direction of the gate lines and are formed in the same color along the longitudinal direction of the data lines. The method according to claim 3 or 5,
Wherein the color filters are formed in the same color along the longitudinal direction of the gate lines and in different colors along the longitudinal direction of the data lines. 6. The method of claim 5,
Wherein the dummy pixel displays a black image when the three-dimensional image is displayed in each of the sub-pixels, and displays a dummy image according to the two-dimensional image when the two-dimensional image is displayed in each of the sub-pixels. 9. The method of claim 8,
Wherein the dummy image has the same gray level as the two-dimensional image when all the two-dimensional images displayed on the sub-pixels of the unit pixel are identical, and at least one of the two-dimensional images displayed on each sub- And the black grayscale is provided when the difference is different. The method according to claim 1,
Wherein the optical axis changing member comprises:
A left eye retarder formed to correspond to the left eye image region; And
And a right eye retarder formed to correspond to the right eye image region,
Wherein the boundary between the left eye retarder and the right eye retarder is superimposed on the dummy area. delete A plurality of unit pixels including a plurality of subpixels and dummy pixels having an area smaller than the subpixels, a color filter region corresponding to each of the plurality of subpixels, a dummy region corresponding to the dummy pixels, A display panel including an optical axis changing member for separating the left eye image area and the right eye image area into a left eye image area and a right eye image area;
A data processing unit for generating two-dimensional image data and two-dimensional dummy data based on the input data, or generating three-dimensional image data and three-dimensional dummy data; And
Dimensional image data is supplied to the sub-pixel and the two-dimensional dummy data is supplied to the dummy pixel to display a two-dimensional image on the display panel, or the three-dimensional image data is supplied to the sub- And a panel driver for supplying three-dimensional dummy data to the dummy pixel to display a three-dimensional image on the display panel. 13. The method of claim 12,
Wherein the data processing unit comprises:
A mode signal generating unit for generating a two-dimensional mode signal or a three-dimensional mode signal according to the user's mode selection or the input data; And
Dimensional image data and the three-dimensional dummy data according to the three-dimensional mode signal to generate the two-dimensional image data and the three-dimensional dummy data according to the two-dimensional mode signal, And a data generating unit for providing the data to the driving unit. The method according to claim 12 or 13,
Wherein the two-dimensional dummy data has the same gray level as the two-dimensional image data when the two-dimensional image data to be displayed in each sub-pixel of the unit pixel are all the same, And the black gradation is different when at least one of the gradation levels is different. The method according to claim 12 or 13,
Wherein the three-dimensional dummy data has a black gradation. 13. The method of claim 12,
Wherein the optical axis changing member comprises:
A left eye retarder formed to correspond to the left eye image region; And
And a right eye retarder formed to correspond to the right eye image region,
Wherein the left retarder and the right eye retarder are formed on a polarizing plate attached to the front surface of the display panel or are formed on a substrate or a film and disposed on the polarizing plate.

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