KR101878978B1 - Multi view display device - Google Patents

Abstract

According to an embodiment of the present invention, there is provided an image processing apparatus including an image supply unit for generating a first image and a second image; A timing controller for controlling the first and second images supplied from the image supply unit and alternately outputting the images for each frame; A data driver for outputting a first image and a second image under the control of the timing controller; A display unit for alternately displaying the first image and the second image supplied from the data driver on a frame-by-frame basis; An active retarder which is positioned on the display unit and drives the first and second polarization states alternately for each frame according to a drive voltage supplied from the outside to separately transmit the first image and the second image; And a polarizing glasses unit including first polarizing glasses for transmitting the first image transmitted through the active retarder unit in both eyes and second polarizing glasses for transmitting the second image in both eyes .

Description

[0001] MULTI VIEW DISPLAY DEVICE [0002]

An embodiment of the present invention relates to a multi-image display device.

As the information technology is developed, the market of display devices, which is a connection medium between users and information, is getting larger. Accordingly, a flat panel display (FPD) such as a liquid crystal display (LCD), an organic light emitting diode (OLED), and a plasma display panel (PDP) Usage is increasing.

In general, the flat panel display device as described above is implemented as a stereoscopic image display device, and displays a plurality of users so that they can enjoy the same stereoscopic image. The stereoscopic image display device is divided into a stereoscopic technique and an autostereoscopic technique.

The binocular parallax method uses the parallax images of the left and right eyes with large stereoscopic effects. In the binocular parallax system, there are a glasses system and a non-glasses system, and both systems are now practically used. In the spectacle method, the polarizing direction of the right and left parallax images is changed in a time-division manner to a direct-view liquid crystal panel or a projector, and a stereoscopic image is implemented using polarizing glasses or liquid crystal shutter glasses.

 Recently, however, the era of so-called multi-image display in which a variety of complex image information is displayed through a stereoscopic image display device is coming to the present.

Recently, a multi-image display device for displaying a two-dimensional image, a three-dimensional image and a divided image on a display screen of a stereoscopic image display device has been proposed and developed. The multi-image display device has an advantage that a plurality of users can view different images according to their preferences.

The conventional multi-image display device is mainly composed of a space division method in which divided images are displayed in a predetermined space along a path. In the space division method, a barrier for dividing the image displayed on the panel into regions is used.

However, the technique of the conventional multi-image display device has a problem that the resolution is lowered (for example, lower than 1/2 of the panel resolution) because the image is divided and displayed in the same panel in the space.

According to an embodiment of the present invention for solving the above-described problems of the background art, users wearing polarized glasses having different transmission characteristics can simultaneously view two or more multi- Device.

According to an embodiment of the present invention, there is provided an image processing apparatus comprising: an image supply unit for generating a first image and a second image; A timing controller for controlling the first and second images supplied from the image supply unit and alternately outputting the images for each frame; A data driver for outputting a first image and a second image under the control of the timing controller; A display unit for alternately displaying the first image and the second image supplied from the data driver on a frame-by-frame basis; An active retarder which is positioned on the display unit and drives the first and second polarization states alternately for each frame according to a drive voltage supplied from the outside to separately transmit the first image and the second image; And a polarizing glasses unit including first polarizing glasses for transmitting the first image transmitted through the active retarder unit in both eyes and second polarizing glasses for transmitting the second image in both eyes .

The first polarizing glasses may be constituted of left eye glasses having only a first polarizing function and right eye glasses and the second polarizing glasses may be constituted of left eye glasses having only a second polarizing function and right eye glasses.

The image supply unit may generate the first image and the second image with the same or different images for each frame.

The active retarder may alternately drive the liquid crystal layer formed between one electrode and the other electrode formed on two films by a driving voltage supplied to one electrode and the other electrode for each frame in a first polarization state and a second polarization state have.

The active retarder may transmit the first image when the first driving voltage is supplied to one of the one electrode and the other electrode, and may transmit the second image when the second driving voltage is supplied.

The active retarder portion includes a first film, a first film formed on one surface of the first film, a second film bonded to the first film, an other electrode formed on one surface of the second film and facing the one electrode, (N is an integer of 2 or more) in the direction of the scan line of the display unit, and a liquid crystal layer formed between the first film and the second film and a lambda / 4 plate formed on the other surface of the second film. Or an ideal integer) block.

The number of N (N is an integer of 2 or more) blocks may correspond to the number of the light source blocks of the backlight unit that provide light to the display unit.

N blocks (N is an integer of 2 or more) can be driven in synchronization with the scan time of the light source block.

The light source block can be sequentially scanned from the first block to the M (M is an integer of 2 or more) blocks in synchronization with the scan time of the display unit.

The light source block can be scanned in the same manner from the first block to the M (M is an integer of 2 or more) blocks in synchronization with the scan time of the display unit.

Embodiments of the present invention provide a multi-image display apparatus in which users wearing polarized glasses having different transmission characteristics can simultaneously view two multi-images, each of which is distinguished without degradation in resolution. In addition, the embodiment of the present invention has an effect of providing a multi-image display device capable of preventing crosstalk felt when viewing two multi-images. In addition, the embodiment of the present invention has an effect of providing a multi-image display device capable of viewing three-dimensional images by wearing polarized glasses as well as two-dimensional images.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a multi-image display apparatus according to an embodiment of the present invention; FIG.
Fig. 2 is an exemplary circuit configuration of a subpixel. Fig.
3 is a configuration diagram of an active retarder portion according to the first embodiment of the present invention.
4 is a cross-sectional view for explaining the operation of the active retarder portion shown in Fig. 3;
5 is a view for explaining a drive voltage applied to a block of an active retarder portion;
6 is a view for explaining the synchronous driving of a block of a light source block and an active retarder portion of a backlight unit according to the first embodiment;
7 is a view showing a polarization state of the active retarder portion by the synchronous drive described in Fig.
8 is a view for explaining the synchronous driving of a block of a light source block and an active retarder portion of a backlight unit according to the second embodiment;
9 is a view showing a polarization state of the active retarder portion by the synchronous drive described in Fig.
10 is a configuration diagram of an actibuli tarder portion according to a third embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic configuration diagram of a multi-image display apparatus according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a circuit configuration of a sub-pixel.

1 and 2, a multi-image display apparatus according to an exemplary embodiment of the present invention includes an image supply unit SBD, a timing control unit TCN, a driver DRV, a display unit PNL, an active retarder unit ARF, an active retarder control section CON, and polarized spectacle sections GLS1 and GLS2.

The image supply unit (SBD) generates one of two-dimensional image data, three-dimensional image data and multi-image data according to a user's selection. The image supply unit SBD supplies the timing control unit TCN with timing signals and video data such as a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a data enable signal DE and a main clock . The image supply unit (SBD) selects one of a two-dimensional mode, a three-dimensional mode, and a multi-image mode according to a user's selection input through a user interface, generates image data corresponding thereto, and supplies the generated image data to a timing control unit (TCN). The user interface includes user input means such as an OSD (On Screen Display), a remote controller, a keyboard, and a mouse. Hereinafter, an example in which the image supply unit SBD is selected as the multi-image mode and the multi-image data is supplied to the timing control unit TCN will be described as an example. When the image supply unit (SBD) is selected as the multi-image mode, it generates the first image data and the second image data with the same or different images for each frame. Here, the different image means an image for displaying different screens such as a person (first image data) and an animal (second image data), rather than an image for displaying the same screen.

The timing control unit TCN receives the multi-image data including the first image data and the second image data from the image supply unit SBD. The timing controller TCN alternately supplies the first image data and the second image data to the driver DRV at a frame frequency of 120 Hz or more. In addition, the timing controller TCN supplies a control signal corresponding to the first and second image data to the driver DRV.

The driving unit DRV includes a data driver connected to the data lines to supply a data signal, and a gate driver connected to the gate lines and supplying a gate signal. The data driver included in the driving unit DRV converts the first and second image data of the digital form into the first and second image data of the analog form under the control of the timing controller TCN and supplies them to the data lines do. The gate driver included in the driver DRV sequentially supplies gate signals to the gate lines under the control of the timing controller TCN.

The display unit PNL receives the gate signal and the data signal from the driver DRV, and displays the first image data and the second image data alternately for each frame. The display unit PNL may be constituted by a liquid crystal display panel, a plasma display panel, an organic light emitting display panel and the like, but a liquid crystal display panel will be described below as an example.

The display unit PNL includes a backlight unit BLU, a liquid crystal display panel (LCD), and polarizing films PL1 and PL2. The liquid crystal display panel (LCD) receives the gate signal and the data signal from the driver DRV, and displays the first image data and the second image data alternately for each frame. A liquid crystal display panel (LCD) includes a thin film transistor substrate (hereinafter referred to as a TFT substrate) on which a thin film transistor (TFT) and a capacitor are formed, and a color filter substrate on which a color filter and a black matrix are formed. In the liquid crystal display panel (LCD), subpixels (SP) including a liquid crystal layer formed between the TFT substrate and the color filter substrate are formed in a matrix form. The subpixel SP includes a red subpixel, a green subpixel, and a blue subpixel.

A typical circuit configuration of the subpixel SP includes a thin film transistor (TFT), a storage capacitor Cst, and a liquid crystal layer Clc as shown in FIG. In a thin film transistor (TFT), a source electrode is connected to a data line DL to which a data signal is supplied, and a gate electrode is connected to a gate line GL to which a gate signal is supplied. The storage capacitor Cst and the liquid crystal layer Clc are connected to the drain electrode of the thin film transistor TFT and are supplied with a common voltage supplied through the common voltage line Vcom. With this configuration, the liquid crystal layer Clc is driven by the difference between the data voltage supplied to the pixel electrode 1 and the common voltage supplied to the common electrode 2. The common electrode is formed on a color filter substrate in a vertical electric field driving method such as a TN (Twisted Nematic) mode and a VA (Vertical Alignment) mode, and is formed on the color filter substrate in a horizontal (horizontal) mode such as IPS (In Plane Switching) mode and FFS And is formed on the TFT substrate together with the pixel electrode 1 in the electric field driving system. The liquid crystal mode of the liquid crystal display unit can be implemented not only in the TN mode, the VA mode, the IPS mode, and the FFS mode, but also in any liquid crystal mode.

The polarizing films PL1 and PL2 polarize the light incident on the liquid crystal display panel (LCD) and the light emitted from the liquid crystal display panel (LCD). The first polarizing film PL1 is attached to the TFT substrate of the liquid crystal display panel (LCD) and the second polarizing film PL2 is attached to the color filter substrate of the liquid crystal display panel (LCD).

The backlight unit BLU is driven under the control of the image supply unit SBD or the timing control unit TCN to provide light to the liquid crystal display panel LCD. The backlight unit BLU includes a light source for emitting light, a light guide plate for guiding the light emitted from the light source toward the liquid crystal display panel (LCD), an optical member for diffusing and condensing the light emitted from the light guide plate, and the like. The light source of the backlight unit BLU may be divided into M (M is an integer of 2 or more) light source blocks, which are turned on and off in synchronization with the scan time of the liquid crystal display panel (LCD). The backlight unit (BLU) is composed of an edge type, a dual type, a quad type, and a direct type. In the edge type, a light source is arranged on one side of a liquid crystal display panel (LCD), a dual type is a light source is arranged on both sides of a liquid crystal display panel (LCD), and a quad type is a light source is a liquid crystal display panel And the direct type is a type in which the light source is disposed under the liquid crystal display panel (LCD).

The active retarder control unit CON serves to change the polarization characteristics of the active retarder unit ARF under the control of the timing control unit TCN or the image supply unit SBD. The active retarder control unit CON generates a driving voltage so as to change the polarization characteristics of the active retarder unit ARF in synchronization with the scan time of the backlight unit BLU and supplies it to the active retarder unit ARF.

The active retarder ARF alternately drives the first polarized light state and the second polarized light state for each frame to separately transmit the first image data and the second image data. The active retarder ARF alternately drives the first polarized light state and the second polarized light state for each frame according to the driving voltage supplied from the active retreader control unit CON. Therefore, the first image data is entirely transmitted by the active retarder ARF during the first frame, and the second image data is entirely transmitted by the active retarder ARF during the second frame, so that no degradation of resolution occurs .

The polarizing glasses units GLS1 and GLS2 separately transmit the first image data and the second image data transmitted through the active retarder unit ARF, respectively. The polarizing glasses units GLS1 and GLS2 include a first polarizing glasses GLS1 for transmitting the first image data to both eyes and a second polarizing glasses GLS2 for transmitting the second image data to both eyes. Therefore, the first polarizing glasses GLS1 are constituted by left eye glasses (LEFT) and right eye glasses (RIGHT) having only a function of first polarized light (e.g., left circularly polarized light), and the second polarizing glasses GLS2 are constituted by a second polarized light , Left-handed eyeglasses (LEFT) and right-eye glasses (RIGHT) with only function of right-hand circularly polarized light.

According to the above structure, when the first image data and the second image data are alternately displayed for each frame in the display unit PNL, the active retarder ARF separately outputs the first image data and the second image data. The first user USR1 wearing the first polarized glasses GLS1 views only the first video and the second user USR2 wearing the second polarized glasses GLS2 views the second video only .

On the other hand, when the display unit PNL displays two-dimensional image data, the first and second users USR1 and USR2 enjoy the same two-dimensional image. When the display unit PNL displays three-dimensional image data, the first and second users USR1 and USR2 wear third polarizing glasses (not shown) different from the first and second polarizing glasses GLS1 and GLS2 Dimensional image. Here, the third polarizing glasses are constituted by glasses whose left and right eyeglasses have different polarizing functions, for example, the left eye glasses are circularly polarized, and the right eye glasses are circular glasses.

Hereinafter, a stereoscopic image display apparatus according to an embodiment of the present invention will be described in more detail.

≪ Embodiment 1 >

3 is a cross-sectional view for explaining the operation of the active retarder portion shown in FIG. 3, and FIG. 5 is a cross-sectional view illustrating the active retarder portion of the active retarder portion according to the first embodiment of the present invention. Fig. 8 is a diagram for explaining a driving voltage to be applied to the driving voltage.

1 to 5, the active retarder ARF includes a first film 151, a first electrode 151 formed on one surface of the first film 151, a first film 151, A second electrode 155 formed on one surface of the second film 155 and facing the one electrode 153 and a second electrode 155 facing the first electrode 151 and the second film 155, And a quarter wave plate (QWP) formed on the other surface of the second film 155.

The active retarder ARF is formed by forming one electrode 153 on one surface of the first film 151 and forming the other electrode 157 on one surface of the second film 155 and facing the one electrode 153 A liquid crystal layer LC is formed between the first film 151 and the second film 155 and the first film 151 and the second film 155 are attached to each other, / 4 plate (QWP). Here, in the case of the? / 4 plate (QWP), the first film 151 and the second film 155 may be attached to the other surface of the second film 155 before being attached. When the active retarder ARF is manufactured as described above, the manufactured active retarder ARF is attached to the display surface of the display PNL.

The active retarder ARF includes a liquid crystal layer LC formed between one side electrode 153 and the other side electrode 157 which are divided into two first and second films 151 and 155, The polarizing characteristic is changed in the first polarization state (e.g., left circularly polarized light) and the second polarization state (e.g., right circularly polarized light) for each frame by the driving voltage supplied to the other electrode 157. [

As described above, the polarization characteristics of the active retarder ARF are changed by the driving voltage supplied to the one electrode 153 and the other electrode 157. [ In the case of the liquid crystal layer LC included in the active retarder ARF, a substance in which the arrangement of liquid crystals varies depending on the direction of the electric field, such as a commonly used liquid crystal material, a ferroelectric liquid crystal material, a polymer using fluidity of liquid crystal, It is possible if it is a large isotropic substance.

The other electrode 157 of the active retarder ARF is divided into N blocks (N is an integer of 2 or more) so as to be divided in the scan line direction of the liquid crystal display panel (LCD). Hereinafter, the first embodiment will be described as an example in which the other electrode 157 included in the active retarder ARF is divided into five blocks (Block1 to Block5) and composed of five other electrodes 157a to 157e.

As shown in FIG. 4, the active retarder ARF changes polarization characteristics from the first polarization state to the second polarization state for each frame by the drive voltage supplied to one electrode 153 and the other electrode 157. More specifically, when the first driving voltage (V> 0) is supplied to one of the one electrode 153 and the other electrode 157, the active retarder ARF transmits the first image data, (V < 0) is supplied, the second video data is transmitted. In other words, when the first driving voltage (V> 0) is supplied to the active retarder ARF, a retardation of? / 2 (Half Wave Plate; HWP) occurs. When the second driving voltage V <0 is supplied to the active retarder ARF, no retardation occurs.

The active retarder ARF is divided into five blocks (Block1 to Block5) so that sequential driving is performed per block. In this case, the active retreader control unit CON shown in FIG. 1 includes a multiplexer MUX having output channels (output 1 to output 5) corresponding to five blocks (Block 1 to Block 5) as shown in FIG. 5 . Therefore, the active retarder ARF sequentially outputs five blocks (Block1 to Block5) in the first polarization state and the second polarization state by the driving voltage outputted from the MUX of the active retreader control unit CON Are alternately changed for each frame.

Hereinafter, driving characteristics of the active retarder ARF will be described.

6 is a view for explaining synchronous driving of a block of a light source block and an active retarder portion of a backlight unit according to the first embodiment, and Fig. 7 is a view showing a polarization state of the active retarder portion by the synchronous driving described in Fig. FIG.

6 and 7, the first to fifth blocks Block1 to Block5 divided into the active retarder ARF are divided into first to fifth light source blocks Block1 to Block5 of the backlight unit BLU, And sequentially driven in synchronization with each other in block units. To this end, the number of blocks divided into the active retarder ARF corresponds to the number of the light source blocks of the backlight unit BLU (the number of blocks to be scanned). Here, the number of the light sources included in the first to fifth light source blocks (Block1 to Block5) of the backlight unit (BLU) is I (I is an integer of 2 or more).

Hereinafter, the synchronization operation of the light source block of the backlight unit and the block of the active retarder and the polarization state of the active retarder will be described.

First, when the first light source block Block1 of the backlight unit BLU is scanned and turned on during the first frame (first frame) in which the first image data is displayed, the first light source block Block1 is synchronized with the active retarder ARF 1 block (Block 1) is also scanned and the polarization characteristic is changed so as to transmit the first image data (first Image). The second to fifth blocks Block2 to Block5 of the active retarder ARF are sequentially synchronized with the scan times of the second to fifth light source blocks Block2 to Block5 of the backlight unit BLU, The polarization characteristic is changed so as to transmit the first image.

Then, when the first light source block Block1 of the backlight unit BLU is scanned and turned on during the second frame in which the second image data (second image) is displayed, the first light source block Block1 of the active retarder ARF One block (Block 1) is also scanned and the polarization characteristic is changed so as to transmit the second image data (second Image). The second to fifth blocks Block2 to Block5 of the active retarder ARF are sequentially synchronized with the scan times of the second to fifth light source blocks Block2 to Block5 of the backlight unit BLU, The polarization characteristic is changed so as to transmit the image data (second image).

The first through fifth blocks Block1 through Block5 divided into the active retarder ARF and the first through fifth light source blocks Block1 through Block5 of the backlight unit BLU are arranged in block units And the polarization state is changed by sequentially driving sequentially.

When the multi-image display apparatus is driven in this manner, as described with reference to FIG. 1, the first user USR1 wearing the first polarized glasses GLS1 is able to use the first image data (first image) The second user USR2 wearing the second polarizing glasses GLS2 is allowed to observe the first image (for example, a documentary broadcast through the S-channel) (For example, news broadcasted through the K-th channel).

&Lt; Embodiment 2 >

8 is a view for explaining synchronous driving of a block of a light source block and an active retarder portion of a backlight unit according to the second embodiment, and Fig. 9 is a graph showing the polarization state of the active retarder portion by the synchronous driving described in Fig. FIG.

8 and 9, the first to fifth blocks Block1 to Block5 divided into the active retarder ARF are divided into first to fifth light source blocks Block1 to Block5 of the backlight unit BLU, Are synchronized in block units in the same scan time. To this end, the number of blocks divided into the active retarder ARF corresponds to the number of the light source blocks of the backlight unit BLU (the number of blocks to be scanned). Here, the number of the light sources included in the first to fifth light source blocks (Block1 to Block5) of the backlight unit (BLU) is I (I is an integer of 2 or more).

Hereinafter, the synchronization operation of the light source block of the backlight unit and the block of the active retarder and the polarization state of the active retarder will be described.

First, when the first to fifth light source blocks (Block1 to Block5) of the backlight unit (BLU) are scanned and turned on during the first frame (first frame) in which the first image data is displayed, The first to fifth blocks (Block1 to Block5) of the dummy ARF are also scanned to change the polarization characteristics so as to transmit the first image data.

Then, when the first to fifth light source blocks (Block1 to Block5) of the backlight unit (BLU) are scanned and turned on during the second frame (second frame) in which the second image data (second image) is displayed, The first to fifth blocks (Block1 to Block5) of the dummy ARF are also scanned to change the polarization characteristics so as to transmit the second image data.

The first through fifth blocks Block1 through Block5 divided into the active retarder ARF and the first through fifth light source blocks Block1 through Block5 of the backlight unit BLU are arranged in block units And all of them are driven at the same time synchronously and the polarization state is changed.

When the multi-image display apparatus is driven in this manner, as described with reference to FIG. 1, the first user USR1 wearing the first polarized glasses GLS1 is able to use the first image data (first image) The second user USR2 wearing the second polarizing glasses GLS2 is allowed to observe the first image (for example, a documentary broadcast through the S-channel) (For example, news broadcasted through the K-th channel).

&Lt; Third Embodiment >

Fig. 10 is a configuration diagram of an actibuli tarder portion according to a third embodiment of the present invention.

1 and 9, the active retarder ARF according to the third embodiment of the present invention includes a first film 151, a first electrode 151 formed on one surface of the first film 151, A second film 155 formed on one surface of the second film 155 and facing the one electrode 153 and a second film 155 formed on the other surface of the first film 151 A liquid crystal layer LC formed between the second film 155 and the second film 155 and a quarter wave plate (QWP) formed on the other surface of the second film 155.

The active retarder ARF includes a liquid crystal layer LC formed between one side electrode 153 and the other side electrode 157 which are divided into two first and second films 151 and 155, The polarization characteristic is changed to the first polarization state and the second polarization state for each frame by the driving voltage supplied to the other electrode 157. [ Here, the other electrode 157 of the active retarder ARF is divided into N blocks (N is an integer of 2 or more) so as to be divided in the scan line direction of the display portion PNL. In the third embodiment, one block is divided into five blocks (Block1 to Block5).

When the first driving voltage V> 0 is supplied to one of the one electrode 153 and the other electrode 157, the active retarder ARF transmits the first image data and the second driving voltage V <0, The second video data is transmitted.

The active retarder ARF is divided into five blocks (Block1 to Block5) so that sequential driving is performed per block. The five blocks (Block1 to Block5) are divided into at least two sub-blocks (Bloack1a to Bloack5b) in the corresponding line. Accordingly, the first block (Block1) is divided into the first sub-block (Block 1a) and the first sub-block (Block 1b). In the third embodiment, the first to fifth blocks (Block1 to Block5) are divided into two sub-blocks (Block1a to Block5b). However, the first to fifth blocks may be divided into J It is possible.

The shape in which one block included in the active retarder ARF is divided into J subblocks as in the third embodiment can be applied when using a direct-type backlight unit BLU. In this case, the number of the J subblocks may correspond to the number of the light source blocks of the backlight unit BLU or may be smaller than the number of the light source blocks of the backlight unit BLU. (By adjusting the ratio of the number of sub-blocks to the number of light source blocks)

The active retarder ARF according to the third embodiment is the same as the first and second embodiments except that one block is divided into J subblocks as described above, so that the following description will be omitted in order to avoid duplication of description.

The active retarder type multi-image display device according to the present invention can improve the resolution compared to the patterned multi-view type multi-image display device which separates images by the space division method. The reason for this is that the pattern driven multi-image display device transmits 1/2 million of the screen by the pattern driver.

In addition, the active retarder type multi-image display apparatus according to the present invention can reduce crosstalk in comparison with a shutter glass type multi-image display apparatus that separates images in a time division manner. The reason for this is that the shutter glass type multi-image display device causes crosstalk due to the reception area (synchronization problem depending on distance, etc.) when the shutter glasses and the display unit are synchronized.

As described above, the embodiment of the present invention provides a multi-image display device in which users wearing polarized glasses having different transmission characteristics can simultaneously view two multi-images, each of which is distinguished without degradation in resolution. In addition, the embodiment of the present invention has an effect of providing a multi-image display device capable of preventing crosstalk felt when viewing two multi-images. In addition, the embodiment of the present invention has an effect of providing a multi-image display device capable of viewing three-dimensional images by wearing polarized glasses as well as two-dimensional images.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. In addition, the scope of the present invention is indicated by the following claims rather than the detailed description. Also, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

SBD: Image supply unit TCN: Timing control unit
DRV: driving part PNL: display part
ARF: Active Retarder CON: Active Retarder Control
GLS1, GLS2: Polarizing eyeglass unit 153: One side electrode
157: the other electrode
first Image: first image data second Image: second image data

Claims (14)

An image supply unit for generating a first image and a second image;
A timing controller for controlling the first image and the second image supplied from the image supply unit and alternately outputting the images for each frame;
A data driver for outputting the first image and the second image under the control of the timing controller;
A display unit for alternately displaying the first image and the second image supplied from the data driver on a frame-by-frame basis;
An active retarder part which is located on the display part and alternately drives every frame with a first polarization state and a second polarization state according to a drive voltage supplied from the outside to separately transmit the first image and the second image; And
And a polarizing spectacle unit including first polarizing glasses for transmitting both the first image transmitted through the active retarder unit to both eyes, and second polarizing glasses for transmitting the second image through both eyes,
The active retarder portion
A second film formed on one surface of the first film and bonded to the first film; an other electrode formed on one surface of the second film and facing the one electrode; A liquid crystal layer formed between the first film and the second film, and a lambda / 4 plate formed on the other surface of the second film,
Wherein one of the one electrode and the other electrode is divided into N (N is an integer of 2 or more) blocks so as to be divided into a scan line direction of the display unit. The method according to claim 1,
Wherein the first polarizing glasses are constituted by left eye glasses and right eye glasses having only a first polarizing function and the second polarizing glasses are constituted by left eye glasses and right eye glasses having only a second polarizing function. The method according to claim 1,
Wherein the image supply unit generates the first image and the second image with the same or different images for each frame. The method according to claim 1,
The active retarder portion
And alternately driven for each frame in the first polarization state and the second polarization state by the drive voltage supplied to the one electrode and the other electrode. 5. The method of claim 4,
The active retarder portion
Wherein when the first driving voltage is supplied to one of the one electrode and the other electrode, the first image is transmitted, and when the second driving voltage is supplied, the second image is transmitted. delete The method according to claim 1,
The number of N (N is an integer of 2 or more) blocks is
Wherein the number of the light source blocks corresponds to the number of the light source blocks of the backlight unit that provides light to the display unit. 8. The method of claim 7,
The N blocks (N is an integer of 2 or more)
Wherein the driving unit is driven in synchronization with a scan time of the light source block. 8. The method of claim 7,
The light source block
Wherein the scan signals are sequentially scanned from the first block to the Mth block (M is an integer of 2 or more) in synchronization with the scan time of the display unit. 8. The method of claim 7,
The light source block
Wherein the first to M &lt; th &gt; (M is an integer equal to or greater than 2) blocks are scanned in the same manner in synchronism with the scan time of the display unit. The method according to claim 1,
Each block included in the active retarder section
(J is an integer of 2 or more) sub-blocks. An image supply unit for generating a first image and a second image;
A timing controller for controlling the first image and the second image supplied from the image supply unit and alternately outputting the images for each frame;
A data driver for outputting the first image and the second image under the control of the timing controller;
A display unit for alternately displaying the first image and the second image supplied from the data driver on a frame-by-frame basis;
An active retarder part which is located on the display part and alternately drives every frame with a first polarization state and a second polarization state according to a drive voltage supplied from the outside to separately transmit the first image and the second image; And
And a polarizing spectacle unit including first polarizing glasses for transmitting both the first image transmitted through the active retarder unit to both eyes, and second polarizing glasses for transmitting the second image through both eyes,
The active retarder portion
(N is an integer of 2 or more) blocks so as to be divided in the scan line direction of the display unit, and each block is divided into J (J is an integer of 2 or more) sub-blocks. 13. The method of claim 12,
Wherein the first polarizing glasses include left eye glasses and right eye glasses having only a first polarizing function,
And the second polarizing glasses include left eye glasses and right eye glasses having only a second polarization function different from the first polarized light. 13. The method according to claim 1 or 12,
The number of blocks divided into the active retarder
Wherein the number of the light source blocks of the backlight unit that provides light to the display unit corresponds to the number of the light source blocks.

Images