KR20120118988A - Image display device - Google Patents

Abstract

PURPOSE: An image display device is provided to prevent the degradation of 2D image brightness by displaying 2D image data on all of sub pixels in a 2D mode and secure a display interval between a left eye image and a right eye image by displaying black tone data on sub pixels on a 3k low line in a 3D mode. CONSTITUTION: If an LCD(Liquid Crystal Display) panel(111) and a patterned retarder(120) are aligned, RGBW data separately displayed on a first to a forth sub pixels(SP1~SP4) is selected as left eye image data for implementing a left eye image. BWRG data separately displayed on a seventh to a tenth sub pixels(SP7~SP10) is selected as right eye image data for implementing a right eye image. In this state, black tone data displayed on a fifth, a sixth, eleventh, twelfth sub pixels(SP5,SP6,SP11,SP12) broadens a display interval between the left eye image and the right eye image.

Description

Video display device {IMAGE DISPLAY DEVICE}

The present invention relates to an image display device capable of realizing a two-dimensional plane image (hereinafter referred to as '2D image') and a three-dimensional stereoscopic image (hereinafter referred to as '3D image').

With the development of various contents and the development of circuit technology, image display apparatuses can selectively implement 3D images as well as 2D images. The image display device implements a 3D image by using a binocular parallax technique or an autostereoscopic technique.

The binocular parallax method uses a parallax image of the left and right eyes with a large stereoscopic effect, and there are glasses and no glasses, both of which are put to practical use. The spectacle method displays the polarization direction of the left and right parallax image on the direct-view display device or the projector by changing the polarization direction or time division method, and implements the 3D image using the polarized glasses or the liquid crystal shutter glasses. In the autostereoscopic method, an optical plate such as a parallax barrier for separating an optical axis of a left and right parallax image is generally provided in front of a display screen.

The spectacles are divided into polarized spectacles and shutter spectacles. In the polarizing glasses method, a polarization splitter such as a patterned retarder must be bonded to the display panel. The pattern retarder separates the polarization of the left eye image and the right eye image displayed on the display panel. When a viewer views a 3D image on a polarized glasses type image display device, the viewer wears polarized glasses to see the polarization of the left eye image through the left eye filter of the polarizing glasses and the polarization of the right eye image through the right eye filter of the polarizing glasses. You can feel three-dimensional.

In the conventional polarization glasses type image display device, the display panel may be applied as a liquid crystal display panel. In this case, the upper and lower viewing angles are poor due to the parallax between the pixel array of the liquid crystal display panel and the pattern retarder due to the thickness of the upper glass substrate of the liquid crystal display panel and the thickness of the upper polarizing plate.

Referring to FIG. 1, the liquid crystal display panel 120 includes an upper glass substrate 4 having a color filter 6 and a black matrix BM, a lower glass substrate 2 having a TFT (Thin Film Transistor) array formed thereon, and an upper portion thereof. A liquid crystal layer (not shown) formed between the glass substrate 4 and the lower glass substrate 2, the upper polarizing plate 8 adhered to the upper glass substrate 4, and the lower polarizing plate formed on the lower glass substrate 2 ( 14) and the like.

The pattern retarder substrate 112 having the pattern retarder is adhered to the upper polarizer 8 of the liquid crystal display panel 120. The pattern retarder may include a first pattern 10a facing the odd-numbered low line in the pixel array of the liquid crystal display panel 120 and a second pattern facing the even-numbered low line in the pixel array of the liquid crystal display panel 120. 10b). The optical axes of the first pattern 10a and the second pattern 10b are different from each other. The first pattern 10a and the second pattern 10b delay the phase of the incident light by 1/4 wavelength.

In the pixel array of the liquid crystal display panel 10, the odd-numbered low line may display a left eye image and the even-numbered low line may display a right eye image. In this case, the light of the left eye image displayed on the odd-numbered low line of the pixel array is incident on the first pattern 10a by linearly polarized light through the upper polarizer 8, and the light of the right eye image displayed on the even-numbered low line of the pixel array. Through this upper polarizing plate 8, it is incident on the second pattern 10b with linearly polarized light. The first pattern 10a delays the phase of the linearly polarized light incident through the upper polarizer 8 by a quarter wavelength at the front viewing angle indicated by the dotted line to pass the light of the left eye image to the left circularly polarized light. The second pattern 10b delays the phase of the linearly polarized light passing through the upper polarizer 8 by a quarter wavelength at the front viewing angle indicated by the dotted line to pass the light of the right eye image to the right circularly polarized light. The left eye filter of the polarizing glasses 30 passes only the left circle polarization, and the right eye filter passes only the right circle polarization. When the viewer wears the polarized glasses 30, only the pixels of the even-numbered lowlines of the pixel array in which the only low-order pixels of the pixel array in which the left eye image is displayed in the left eye of the viewer and the right-eye image in the right eye of the viewer are displayed. see. Thus, at the frontal viewing angle, the viewer can view 3D images without 3D crosstalk.

In the upper and lower viewing angles shown in solid lines in FIG. 1, light of the left eye image displayed on the odd-numbered low line of the pixel array is incident on the first pattern 10a through linear polarization 8 through the upper polarizing plate 8, and a part of the second pattern 10b is disposed. Is incident on. In addition, light of the right eye image displayed on the even-lowest row line of the pixel array is incident on the second pattern 10b through linearly polarized light through the upper polarizer 8, and a part of the light is incident on the first pattern 10a. Accordingly, the viewer may view the pixel array in which the right eye image is displayed along with pixels of the odd-numbered low lines of the pixel array in which the left eye image is displayed in each of the left and right eyes through the polarizing glasses 30 at a vertical viewing angle. You will see the pixels of even-numbered low lines. Therefore, when the viewer views the 3D image displayed on the polarizing glasses type image display device at the upper and lower viewing angles, the viewer feels the 3D crosstalk in which the left and right eye images are overlapped when viewed in a single eye (left eye or right eye).

In order to solve the 3D crosstalk problem of vertical viewing angle in the polarizing glasses type image display device, a black stripe (BS) is formed on the pattern retarder as shown in FIG. 2, or the liquid crystal display panel 120 as shown in FIG. 3. ) Can increase the width of the black matrix BM. The black stripe BS, which is additionally formed in the pattern retarder, is formed long in the direction of the low line of the pixel array and overlaps a part of the odd-numbered low line and the part of the even-numbered low line of the pixel array.

The method of adding the black stripe BS to the pattern retarder as shown in FIG. 2 or increasing the width of the black matrix BM as shown in FIG. 3 causes another problem of lowering the light transmittance and lowering the luminance of the 2D image.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image display apparatus capable of widening the vertical viewing angle of a 3D image without degrading the brightness of the 2D image.

In order to achieve the above object, an image display apparatus according to an exemplary embodiment of the present invention has four subpixels arranged in a quadrangular shape, and has a first quad type pixel and a second quad type pixel sequentially adjacent in a column direction. And a display panel for selectively displaying a 2D image and a 3D image including a third quad type pixel. And a patterned retarder that separates light from the display panel into a first polarization component and a second polarization component; The first quad type pixel comprises first and second subpixels disposed in a first rowline and third and fourth subpixels disposed in a second rowline below the first rowline; The second quad type pixel includes fifth and sixth subpixels disposed in a third rowline below the second rowline and seventh and eighth subpixels disposed in a fourth rowline below the third rowline. It includes; The third quad type pixel includes ninth and tenth subpixels disposed in a fifth rowline under the fourth rowline, and eleventh and twelfth subpixels disposed in a sixth rowline under the fifth rowline. It includes; When the 2D image is implemented, 2D image data is displayed on all subpixels of the first to sixth row lines; When the 3D image is implemented, one of left eye image data and right eye image data is displayed on subpixels of the first and second low lines, and the left eye image data is displayed on subpixels of the fourth and fifth low lines. The other one of the right eye image data and the right eye image data are displayed, and black gray data is displayed on the subpixels of the third and sixth row lines.

The image display device according to the present invention can widen the vertical viewing angle of the 3D image without lowering the luminance of the 2D image through the data processing technology (inserting black gradation data only in the 3D mode) depending on the driving mode.

1 is a view showing a vertical viewing angle in which 3D crosstalk appears in a polarizing glasses image display device.
2 is a view showing an example in which a black stripe is additionally formed on the pattern retarder to improve the vertical viewing angle.
3 is a view showing an example in which the black matrix width of the liquid crystal display panel is increased to improve the vertical viewing angle.
4 is a view showing an image display device according to an embodiment of the present invention.
5 illustrates an example of quad type pixels.
6 is a diagram illustrating an alignment state of a pixel group and a patterned retarder corresponding thereto.
7A through 8B are diagrams illustrating an example in which the RGBW configuration is applied to FIG. 6.
9 is a view showing that a display interval between a left eye image and a right eye image is widened through black grayscale data in a 3D mode.
10a to 11b are views showing an example in which the RGWB configuration is applied to FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 4 to 11B.

4 shows an image display apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the image display device includes a display element 110, a patterned retarder 120, a controller 130, a panel driver 140, and polarizing glasses 150.

The display device 110 includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an inorganic electroluminescent device and an organic light emitting diode device. The display device may be implemented as a flat panel display device such as an electroluminescence device (EL) including an organic light emitting diode (OLED) and an electrophoresis display device (EPD). Hereinafter, the display device 110 will be described based on the liquid crystal display device.

The display device 110 includes a liquid crystal display panel 111, an upper polarizer 111a, and a lower polarizer film 111b.

The liquid crystal display panel 111 includes two glass substrates and a liquid crystal layer formed therebetween. A plurality of data lines and a plurality of gate lines intersecting the data lines are disposed on the lower glass substrate of the liquid crystal display panel 111. Due to the intersecting structure of the signal lines, a plurality of pixels are arranged in a matrix form in the liquid crystal display panel 111 to form a pixel array.

A black matrix, a color filter, and a common electrode are formed on the upper glass substrate of the liquid crystal display panel 111. Upper and lower polarizing films 111a and 111b are attached to each of the upper and lower glass substrates of the liquid crystal display panel 111, and an alignment layer for setting a pre-tilt angle of the liquid crystal is formed. The common electrode supplied with the common voltage Vcom is formed on the upper glass substrate in a vertical electric field driving method such as twisted nematic (TN) mode and vertical alignment (VA) mode, and is in the in plane switching (IPS) mode and the FFS (Fringe). It is formed on the lower glass substrate together with the pixel electrode in a horizontal electric field driving method such as a field switching mode. A column spacer for maintaining a cell gap of the liquid crystal cell may be formed between the glass substrates.

The liquid crystal display panel 111 may be implemented in any liquid crystal mode as well as the TN mode, VA mode, IPS mode, and FFS mode. The liquid crystal display of the present invention may be implemented in any form, such as a transmissive display, a transflective display, a reflective display. In the transmissive display device and the transflective display device, the backlight unit 112 is required. The backlight unit 112 may be implemented as a direct type backlight unit or an edge type backlight unit.

Each of the unit pixels constituting the pixel array is formed in a quad type including a first color subpixel, a second color subpixel, a third color subpixel, and a compensation subpixel. Each of the quad type unit pixels is allocated with one gate line G and four data lines D1 ˜ D4.

The patterned retarder 120 is attached to the upper polarizing film 111a of the liquid crystal display panel 111. The first retarder RT1 is formed in the odd lines of the patterned retarder 120, and the second retarder RT2 is formed in the even lines of the patterned retarder 120. The light absorption axis of the first retarder RT1 and the light absorption axis of the second retarder RT2 are perpendicular to each other. The first retarder RT1 of the patterned retarder 120 transmits a first polarization (eg, left circularly polarized light) of light incident from the pixel array. The second retarder RT2 of the patterned retarder 120 transmits a second polarized light (eg, right circularly polarized light) of light incident from the pixel array. The first retarder RT1 of the patterned retarder 120 may be implemented as a polarization filter that transmits left circularly polarized light, and the second retarder RT2 of the patterned retarder 120 may transmit right circularly polarized light. It may be implemented as a polarization filter. The first and second retarders RT1 and RT2 of the patterned retarder 120 may be aligned such that the boundary portions of them RT1 and RT2 overlap with the 3kth low line as shown in FIG. 6. Can be.

The controller 130 controls the operation of the panel driver 140 in the 2D mode or the 3D mode according to the mode selection signal. The controller 130 receives a mode selection signal through a user interface such as a touch screen, an on screen display (OSD), a keyboard, a mouse, and a remote controller, and accordingly, operates the 2D mode and the 3D mode. Can be switched. Meanwhile, the controller 130 may be a 2D / 3D identification code encoded in data of an input image, for example, a 2D / 3D identification code that may be coded in an electronic program guide (EPG) or an electronic service guide (ESG) of a digital broadcasting standard. May be detected to distinguish between 2D mode and 3D mode.

The controller 130 calculates the compensation data of the 3D image using the RGB data of the 3D image input from the video source in the 3D mode, and inserts black grayscale data into the 3D image data including the RGB data and the compensation data. Transmission to the driving unit 140. The controller 130 may separate the left eye image data and the right eye image data by 2 row lines from the 3D image data, and insert black gray data one row line between the left eye image data and the right eye image data and transmit the data to the data driver. have.

The controller 130 calculates compensation data of the 2D image by using the RGB data of the 2D image input from the video source in the 2D mode, and the 2D image data including the RGB data and the compensation data is displayed on the liquid crystal display panel 111. After aligning according to the display position of the supply to the panel driver 140.

The controller 130 receives timing signals such as a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a data enable signal DE, and a dot clock DCLK from the system board. Generate control signals for controlling the operation timing of the signal. The controller 130 multiplies the timing signals Vsync, Hsync, DE, and DCLK in synchronization with the input frame frequency, and panel the frame at a frame frequency of N × f (N is a positive integer of 2 or more, f is an input frame frequency) Hz. The operation of the driver 140 may be controlled. The input frame frequency is 60 Hz in the National Television Standards Committee (NTSC) scheme and 50 Hz in the phase-alternating line (PAL) scheme.

The panel driver 140 includes a data driver for driving data lines of the liquid crystal display panel 111 and a gate driver for driving gate lines of the liquid crystal display panel 111.

Each of the source drive ICs of the data driver includes a shift register, a latch, a digital-to-analog converter (DAC), an output buffer, and the like. The data driver latches 2D image data or 3D image data (including black gradation data) under the control of the controller 130. The data driver inverts the polarity of the data voltage by converting the 2D / 3D image data into analog positive gamma compensation voltage and negative gamma compensation voltage in response to the polarity control signal. The data driver outputs the data voltage to the data lines in synchronization with the scan pulse output from the gate driver. The source driver ICs of the data driver may be mounted on a tape carrier package (TCP) and bonded to a lower glass substrate of the liquid crystal display panel 111 by a tape automated bonding (TAB) process.

The gate driver includes a shift register, a level shifter, and the like. The gate driver sequentially supplies scan pulses to the gate lines under the control of the controller 130. The shift register of the gate driver is mounted on the TCP and bonded to the lower glass substrate of the liquid crystal display panel 111 by the TAB process, or directly formed on the lower glass substrate simultaneously with the pixel array by the GIP (Gate In Panel) process. Can be.

The polarizing glasses 150 include a left eye 150L having a left eye polarization filter (or a first polarization filter) and a right eye 150R having a right eye polarization filter (or a second polarization filter). The left eye polarization filter has the same light absorption axis as the first retarder RT1 of the pattern retarder 120, and the right eye polarization filter has the same light absorption axis as the second retarder RT2 of the pattern retarder 120. For example, the left eye polarization filter of the polarizing glasses 150 may be selected as a left circular polarization filter, and the right eye polarization filter of the polarizing glasses 150 may be selected as a right circular polarization filter. The user may view 3D image data displayed on the display device 110 in a spatial division manner through the polarizing glasses 150.

5 shows an example of a quad type pixel QPIX.

Referring to FIG. 5, the quad type pixel QPIX includes a first subpixel SPa, a second subpixel SPb, a third subpixel SPc, and a fourth subpixel SPd. To achieve.

The first subpixel SPa may be a red subpixel for displaying a first color (eg, red). The second subpixel SPb may be a green subpixel for displaying a second color (eg, green). The third subpixel SPc may be a blue subpixel for displaying a third color (eg, blue). The fourth subpixel SPd may be a compensation subpixel for enhancing display quality. This arrangement order is hereinafter referred to as 'RGBW configuration'.

The first subpixel SPa including the red color filter is connected to the first data line D1 and the gate line G through the first TFT T1, and the second subpixel SPa includes the green color filter. SPb is connected to the second data line D2 and the gate line G through the second TFT T2. The third subpixel SPc including the blue color filter is connected to the third data line D3 and the gate line G through the third TFT T3 and includes a fourth subpixel (including the white color filter). SPd is connected to the fourth data line D4 and the gate line G through the fourth TFT T4.

Red, green, and blue data are applied to the first to third subpixels SPa, SPb, and SPc, and compensation data is applied to the fourth subpixel SPd. The gray value of the compensation data applied to the fourth subpixel SPd may be determined according to the representative values of the red, green, and blue data applied to the remaining subpixels SPa, SPb, and SPc of the quad type pixel QPIX. Can be. Here, the representative value may be selected as an average value of red, green, and blue data. By the compensation data applied to the fourth subpixel SPd, the luminance, color balance, and color reproduction rate of the quad type pixel are greatly improved.

On the other hand, unlike the RGBW configuration described above, the positions of the blue subpixel and the compensation subpixel may be interchanged. That is, the third subpixel SPc may be implemented as a compensation subpixel, and the fourth subpixel SPd may be implemented as a blue subpixel. Hereinafter, this arrangement order is defined as 'RGWB configuration'.

6 illustrates an alignment state of a pixel group including three quad type pixels and a patterned retarder 120 corresponding thereto.

The pixel group repeatedly disposed on the liquid crystal display panel 111 includes a first quad type pixel QPIX1, a second quad type pixel QPIX2, and a third quad type pixel QPIX3 that are sequentially adjacent to each other along the column direction. do.

The first quad type pixel QPIX1 includes first and second subpixels SP1 and SP2 disposed on the first low line RL # 1, and a second lowline below the first lowline RL # 1. Third and fourth subpixels SP1 and SP2 disposed in (RL # 2) are included.

The second quad type pixel QPIX2 includes fifth and sixth subpixels SP5 and SP6 disposed on the third low line RL # 3 under the second low line RL # 2, and the third low line. And the seventh and eighth subpixels SP7 and SP8 disposed on the fourth row line RL # 4 below (RL # 3).

The third quad type pixel QPIX3 includes the ninth and tenth subpixels SP9 and SP10 disposed on the fifth lowline RL # 5 below the fourth lowline RL # 4, and the fifth lowline. And the eleventh and twelfth subpixels SP11 and SP12 disposed on the sixth row line RL # 6 below (RL # 5).

When the 2D image is implemented, 2D image data is displayed on all the subpixels SP1 to SP12 of the first to sixth row lines RL # 1 to RL # 6.

When the 3D image is implemented, one of the left eye image data and the right eye image data (eg, the left eye image data) is displayed on the subpixels SP1 to SP4 of the first and second row lines RL # 1 and RL # 2. The other one of the left eye image data and the right eye image data (eg, the right eye image data) is displayed on the subpixels SP7 to SP10 of the fourth and fifth low lines RL # 4 and RL # 5. Black gradation data is displayed on the subpixels SP5, SP6, SP11, and SP12 of the third and sixth row lines RL # 3 and RL # 6.

The patterned retarder 120 may include a liquid crystal display panel such that a boundary portion between the first retarder RT1 and the second retarder RT2 overlaps the third and sixth row lines RL # 3 and RL # 6. 111 is aligned on.

7A to 8B show an example in which the RGBW configuration is applied to FIG. 6. 9 shows that the display interval between the left eye image and the right eye image is widened through the black gray data in the 3D mode.

By this RGBW configuration, the first, fifth and ninth subpixels SP1, SP5 and SP9 are respectively selected as red subpixels for red display, and the second, sixth and tenth subpixels SP2 and SP6 are respectively selected. SP10 are selected as the green subpixels for the green display, and the third, seventh, and eleventh subpixels SP3, SP7, and SP11 are each selected as the blue subpixels for the blue display. The eighth and twelfth sub-pixels SP4, SP8, and SP12 are selected as compensation subpixels for improving display quality, respectively.

7A and 7B, in the 2D mode, the red data R, the green data G, the blue data B, and the compensation data W for implementing the 2D image are the first through the analog data voltages, respectively. It is supplied to the fourth data lines D1 to D4. The scan pulses are sequentially supplied to the gate lines G1 to G3 so as to be synchronized with the display timing of the RGBW data. The first to third gate lines G1 to G3 are allocated to the first to third quad type pixels QPIX1 to QPIX3, respectively. Here, homogeneous data (for example, R-R-R, G-G-G, B-B-B, W-W-W) denoted by the same symbol may be selected with the same value, or may be selected with different values.

As a result, the red data R of the 2D image is displayed on the first, fifth and ninth sub-pixels SP1, SP5, and SP9, and the second, sixth and tenth sub-pixels SP2, SP6, and SP10 are displayed. The green data G of the 2D image is displayed, the blue data B of the 2D image is displayed on the third, seventh, and eleventh sub-pixels SP3, SP7, and SP11, and the fourth, eighth, and eleventh subpixels. The compensation data W of the 2D image is displayed in the 12 subpixels SP4, SP8, and SP12.

8A and 8B, under the 3D mode, scan pulses are sequentially supplied to the gate lines G1 to G3. The first to third gate lines G1 to G3 are allocated to the first to third quad type pixels QPIX1 to QPIX3, respectively. In synchronization with the scan pulse supplied to the first gate line G1, the red data R, the green data G, the blue data B, and the compensation data W for implementing the 3D image are respectively provided as analog data voltages. The first to fourth data lines D1 to D4 are supplied. In addition, the black gray data BD, the black gray data BD, the blue data B, and the compensation data W for the 3D image are synchronized with the scan pulse supplied to the second gate line G2. The voltage is supplied to the first to fourth data lines D1 to D4, respectively. The red data R, the green data G, the black gray data BD, and the black gray data BD for implementing the 3D image are analog data in synchronization with the scan pulse supplied to the third gate line G3. The voltage is supplied to the first to fourth data lines D1 to D4, respectively. Here, homogeneous data (eg, R-R, G-G, B-B, and W-W) denoted by the same symbol may be selected with the same value, or may be selected with different values.

As a result, the red data R of the 3D image is displayed on the first and ninth subpixels SP1 and SP9, and the green data G of the 3D image is displayed on the second and tenth subpixels SP2 and SP10. The blue data B of the 3D image is displayed on the third and seventh subpixels SP3 and SP7, and the compensation data W of the 3D image is displayed on the fourth and eighth subpixels SP4 and SP8. The black gradation data BD is displayed on the fifth and eleventh subpixels SP5, SP6, SP11, and SP12.

As shown in FIG. 6, when the liquid crystal display panel 111 and the patterned retarder 120 are aligned, the RGBW data displayed on the first to fourth subpixels SP1 to SP4 may implement the left eye image L. FIG. The BWRG data selected as the left eye image data for each of the seventh to tenth subpixels SP1 to SP4 is selected as the right eye image data for realizing the right eye image R.

In this state, the black gradation data BD displayed on the fifth and eleventh subpixels SP5, SP6, SP11, and SP12 is the left eye image L and the right eye image R as shown in FIG. 9. It serves to widen the display interval D of the liver.

As described above, the present invention displays 2D image data on all subpixels in 2D mode to prevent deterioration of luminance of 2D image, and displays black gray scale data on subpixels on 3k low line in 3D mode. By securing the display interval between the image and the right eye image, the vertical viewing angle of the 3D image can be widened.

10A to 11B show an example in which the RGWB configuration is applied to FIG. 6.

With this RGWB configuration, the first, fifth and ninth subpixels SP1, SP5, SP9 are selected as red subpixels for red display, respectively, and the second, sixth and tenth subpixels SP2, SP6 SP10 is selected as the green subpixel for green display, and the third, seventh and eleventh subpixels SP3, SP7, and SP11 are respectively selected as compensation subpixels for improving display quality. The eighth and twelfth sub-pixels SP4, SP8, and SP12 are selected as blue subpixels for blue display, respectively.

10A and 10B, in the 2D mode, the red data R, the green data G, the compensation data W, and the blue data B for implementing the 2D image are the first through the analog data voltages, respectively. It is supplied to the fourth data lines D1 to D4. The scan pulses are sequentially supplied to the gate lines G1 to G3 so as to be synchronized with the display timing of the RGWB data. The first to third gate lines G1 to G3 are allocated to the first to third quad type pixels QPIX1 to QPIX3, respectively. Here, homogeneous data (eg, R-R-R, G-G-G, W-W-W, B-B-B) denoted by the same symbol may be selected with the same value, or may be selected with different values.

As a result, the red data R of the 2D image is displayed on the first, fifth and ninth sub-pixels SP1, SP5, and SP9, and the second, sixth and tenth sub-pixels SP2, SP6, and SP10 are displayed. The green data G of the 2D image is displayed, the compensation data W of the 2D image is displayed on the third, seventh, and eleventh sub-pixels SP3, SP7, and SP11, and the fourth, eighth, and eighth The blue data B of the 2D image is displayed in the 12 sub pixels SP4, SP8, and SP12.

11A and 11B, under 3D mode, scan pulses are sequentially supplied to the gate lines G1 to G3. The first to third gate lines G1 to G3 are allocated to the first to third quad type pixels QPIX1 to QPIX3, respectively. In synchronization with the scan pulse supplied to the first gate line G1, the red data R, the green data G, the compensation data W, and the blue data B for implementing the 3D image are respectively provided as analog data voltages. The first to fourth data lines D1 to D4 are supplied. In addition, the black gray data BD, the black gray data BD, the compensation data W, and the blue data B for the 3D image are synchronized with the scan pulse supplied to the second gate line G2. The voltage is supplied to the first to fourth data lines D1 to D4, respectively. The red data R, the green data G, the black gray data BD, and the black gray data BD for implementing the 3D image are analog data in synchronization with the scan pulse supplied to the third gate line G3. The voltage is supplied to the first to fourth data lines D1 to D4, respectively. Here, homogeneous data (eg, R-R, G-G, B-B, and W-W) denoted by the same symbol may be selected with the same value, or may be selected with different values.

As a result, the red data R of the 3D image is displayed on the first and ninth subpixels SP1 and SP9, and the green data G of the 3D image is displayed on the second and tenth subpixels SP2 and SP10. The compensation data W of the 3D image is displayed on the third and seventh subpixels SP3 and SP7, and the blue data B of the 3D image is displayed on the fourth and eighth subpixels SP4 and SP8. The black gradation data BD is displayed on the fifth and eleventh subpixels SP5, SP6, SP11, and SP12.

As shown in FIG. 6, when the liquid crystal display panel 111 and the patterned retarder 120 are aligned, the RGWB data displayed on the first to fourth subpixels SP1 to SP4 may implement the left eye image L. FIG. WBRG data selected as left eye image data for each of the seventh to tenth subpixels SP1 to SP4, respectively, is selected as right eye image data for realizing the right eye image R. FIG.

In this state, the black gradation data BD displayed on the fifth and eleventh subpixels SP5, SP6, SP11, and SP12 is the left eye image L and the right eye image R as shown in FIG. 9. It serves to widen the display interval D of the liver.

As described above, the present invention displays 2D image data on all subpixels in 2D mode to prevent deterioration of luminance of 2D image, and displays black gray scale data on subpixels on 3k low line in 3D mode. By securing the display interval between the image and the right eye image, the vertical viewing angle of the 3D image can be widened.

As described above, the image display device according to the present invention can widen the vertical viewing angle of the 3D image without lowering the luminance of the 2D image through data processing technology (inserting black grayscale data only in the 3D mode) depending on the driving mode. Will be.

110: display element 120: patterned retarder
130 control unit 140 panel driver
150: polarized glasses

Claims (8)

Selectively display 2D and 3D images, each having four subpixels arranged in a quadrangular shape, and sequentially neighboring first quad type pixels, second quad type pixels, and third quad type pixels along the column direction. A display panel; And
A patterned retarder for separating light from the display panel into a first polarization component and a second polarization component;
The first quad type pixel comprises first and second subpixels disposed in a first rowline and third and fourth subpixels disposed in a second rowline below the first rowline;
The second quad type pixel includes fifth and sixth subpixels disposed in a third rowline below the second rowline and seventh and eighth subpixels disposed in a fourth rowline below the third rowline. It includes;
The third quad type pixel includes ninth and tenth subpixels disposed in a fifth rowline under the fourth rowline, and eleventh and twelfth subpixels disposed in a sixth rowline under the fifth rowline. It includes;
When the 2D image is implemented, 2D image data is displayed on all subpixels of the first to sixth row lines;
When the 3D image is implemented, one of left eye image data and right eye image data is displayed on subpixels of the first and second low lines, and the left eye image data is displayed on subpixels of the fourth and fifth low lines. And the other one of right and left eye image data, and black gray scale data is displayed on the subpixels of the third and sixth row lines. The method of claim 1,
The patterned retarder,
A first retarder overlapping the first and second row lines to transmit only the first polarization component;
And a second retarder overlapping the fourth and fifth row lines to transmit only the second polarization component. The method of claim 2,
The patterned retarder,
And the boundary portions of the first and second retarders are aligned on the display panel so as to overlap with the subpixels of the third and sixth row lines. The method of claim 1,
A first gate line and first to fourth data lines are allocated to the first quad type pixel;
A second gate line and the first to fourth data lines are allocated to the second quad type pixel;
And a third gate line and the first to fourth data lines are allocated to the third quad type pixel. The method of claim 4, wherein
The first, fifth and ninth subpixels are first color subpixels each including a first color color filter;
The second, sixth, and tenth subpixels are second color subpixels each including a second color color filter;
The third, seventh, and eleventh subpixels are third color subpixels each including a third color filter;
And the fourth, eighth and twelfth subpixels are compensation subpixels each including a white color filter. The method of claim 5, wherein
And a gray value of the compensation data input to the compensation subpixel is determined according to a representative value of the remaining three data of the quad type pixel to which the compensation subpixel belongs. The method of claim 4, wherein
The first, fifth and ninth subpixels are first color subpixels each including a first color color filter;
The second, sixth, and tenth subpixels are second color subpixels each including a second color color filter;
The fourth, eighth and twelfth subpixels are third color subpixels each including a third color color filter;
And the third, seventh and eleventh subpixels are compensation subpixels each including a white color filter. The method of claim 7, wherein
And a gray value of the compensation data input to the compensation subpixel is determined according to a representative value of the remaining three data of the quad type pixel to which the compensation subpixel belongs.

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