KR102677147B1 - Display device - Google Patents

Abstract

The present invention relates to a display device. In the display device according to the present invention, a plurality of channel electrodes are arranged in parallel with a scan line extending in the vertical direction, or a plurality of reference electrodes are arranged in parallel with a scan line extending in the horizontal direction. Therefore, the positions of the transmission area and light blocking area of the barrier panel can be shifted in hundreds of ㎛ according to changes in the viewer's viewing position, and in synchronization with this, the image information of the display panel can be changed to create a natural three-dimensional image without deteriorating image quality. .

Description

Display device {DISPLAY DEVICE}

This specification relates to a display device, and particularly to a display device capable of implementing natural three-dimensional images without deteriorating image quality.

Generally, a display device includes a display panel that displays an image. For example, the display device may include a liquid crystal panel including liquid crystal and/or an OLED panel including a light-emitting element.

The display device includes a barrier panel located on the display panel as shown in FIG. 1. The display device may form transmissive areas and light-blocking areas in the barrier panel to provide different images to the left and right eyes of the viewer. That is, the display device controls the barrier panel to selectively provide 2D images and 3D images to the viewer.

In a display device with such a barrier panel, when the viewer's viewing position changes, there is a problem in which a three-dimensional image is not properly implemented because the viewer's viewing position and the transmission area do not match each other.

In order to solve the above problems, the present invention provides a display device that can implement natural three-dimensional images without deteriorating image quality.

In order to achieve the above object, in the display device according to the present invention, a plurality of channel electrodes are arranged in parallel with a scan line extending in the vertical direction, or a plurality of reference electrodes are arranged in parallel with a scan line extending in the horizontal direction, According to changes in the viewer's viewing position, the positions of the transmission area and light blocking area of the barrier panel can be shifted in units of hundreds of ㎛, and in synchronization with this, the image information of the display panel can be changed to create a natural three-dimensional image without deteriorating image quality.

The display device according to the present invention includes a barrier panel including a plurality of reference electrodes or channel electrodes arranged in parallel with the scan line. That is, a plurality of channel electrodes are arranged in parallel with a scan line extending in the vertical direction, or a plurality of reference electrodes are arranged in parallel with a scan line extending in the horizontal direction. Accordingly, the display device according to the present invention can shift the positions of the transmission area and light blocking area of the barrier panel in hundreds of ㎛ according to the change in the viewer's viewing position, and synchronize with this to change the image information of the display panel to reduce parallax ( motion parallax) can be secured. Accordingly, natural three-dimensional images can be realized without crosstalk.

1 is a diagram schematically showing a display device according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining the arrangement relationship between signal lines of the display panel shown in FIG. 1 and channel electrodes of the barrier panel.
FIG. 3 is a cross-sectional view showing the display panel shown in FIG. 1 in detail.
FIG. 4 is a cross-sectional view showing the barrier panel shown in FIG. 1 in detail.
Figure 5 is a diagram for explaining a 3D driving method of a display device according to the present invention.
FIGS. 6A and 6B are diagrams for explaining address directions of image data and channel data of a display device according to comparative examples and embodiments.
Figure 7 is a diagram for explaining a first embodiment of a 3D driving method according to a change in the viewing position of a display device according to the present invention.
8A and 8B are diagrams for explaining a second embodiment of a 3D driving method according to a change in the viewing position of a display device according to the present invention.
Figure 9 is a perspective view showing a barrier panel of a display device according to a second embodiment of the present invention.
FIGS. 10A and 10B are diagrams for explaining an example in which the light blocking area and the transmission area of the barrier panel shown in FIG. 9 are shifted according to a change in the viewing position.

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

1 is a diagram schematically showing a display device according to an embodiment of the present invention.

Referring to FIG. 1 , a display device according to an embodiment of the present invention may include a display panel 100, a barrier panel 200, a display driver 300, and a barrier driver 600.

The display panel 100 implements images to be provided to viewers. To this end, the display panel 100 has data lines DL and scan lines (or gate lines) SL intersecting each other, as shown in FIG. 2 . Sub-pixels (SP) are arranged one by one in spaces arranged in a matrix manner by this cross structure. Each sub-pixel (SP) includes a liquid crystal layer or a light-emitting layer. In the present invention, the structure of the sub-pixel (SP) including the light-emitting layer will be described as an example.

The display panel 100 includes a lower display substrate 110, a light emitting element 140, and an upper display substrate 170 that are sequentially stacked as shown in FIG. 3 . The light emitting device 140 emits light of a specific color to create an image. For example, the light emitting device 140 includes a lower light emitting electrode 141, a light emitting layer 142, and an upper light emitting electrode 143 that are sequentially stacked. The light emitting layer 142 generates light with a brightness corresponding to the voltage difference between the lower light emitting electrode 141 and the upper light emitting electrode 143. The light emitting layer 142 may include an organic light emitting material or an inorganic light emitting material. For example, the display panel 100 of the display device according to an embodiment of the present invention may be an OLED panel including an organic light-emitting material.

A thin film transistor 120 and an overcoat layer 130 are located between the lower display substrate 110 and the light emitting device 140. The thin film transistor 120 supplies a driving current corresponding to the data signal to the light emitting device 140 according to the scan signal. The overcoat layer 130 removes steps by the thin film transistor 120. For example, the thin film transistor 120 may be completely covered by the overcoat layer 130. The light emitting device 140 may be located on the overcoat layer 130. For example, the overcoat layer 130 may include a contact hole exposing a portion of the thin film transistor 120.

The display panel 100 includes a plurality of light emitting elements 140. Each light emitting device 140 is driven independently from the adjacent light emitting device 140. For example, the edge of the lower light emitting electrode 141 of each light emitting device 140 may be covered by the bank insulating film 150. The light emitting layer 142 and the upper light emitting electrode 143 may be stacked on a partial area of the lower light emitting electrode 141 exposed by the bank insulating film 150. The light emitting layer 142 and the upper light emitting electrode 143 may extend onto the bank insulating film 150 .

An encapsulation member 160 is located on the light emitting device 140. The encapsulation member 160 can prevent damage to the light emitting device 140 due to external moisture and impact. The encapsulation member 160 may have a multi-layer structure. For example, the encapsulation member 160 may include a first encapsulation layer 161, a second encapsulation layer 162, and a third encapsulation layer 163 sequentially stacked on the light emitting device 140.

The first encapsulation layer 161, the second encapsulation layer 162, and the third encapsulation layer 163 may include an insulating material. The second encapsulation layer 162 may include a material different from the first encapsulation layer 161 and the third encapsulation layer 163. For example, the first encapsulation layer 161 and the third encapsulation layer 163 may be an inorganic insulating film formed of an inorganic insulating material, and the second encapsulation layer 162 may be an organic insulating film formed of an organic insulating material.

The display panel 100 is driven by the display driver 300. The display driver 300 supplies various signals to the display panel 100 for displaying images. For example, the display driver 300 may include a data driver 310 and a scan driver 320.

The data driver 310 applies an image data signal to the display panel 100. The scan driver 320 sequentially supplies scan signals to the display panel 100. The image data signal applied by the data driver 310 is synchronized with the scan signal supplied by the scan driver 320.

The display driver 300 may receive necessary signals from the timing control unit 400. For example, the timing control unit 400 transmits digital image data and source timing control signals to the data driver 310, and transmits clock signals, reset clock signals, and start signals to the scan driver 320. do.

The timing control unit 400 is electrically connected to the viewer location detection unit 500, which detects the viewer's location information. For example, the viewer position detection unit 500 consists of a camera module built into the display device. This viewer location detection unit 500 calculates the X-axis, Y-axis, and Z-axis coordinates corresponding to the viewer's location information according to the eye tracking or face tracking of the camera module, and the calculated viewer Coordinate information is supplied to the timing control unit 400.

In 2D mode, the timing control unit 400 aligns the digital image data to suit the pixel arrangement structure of the display panel 100 based on the digital image data and timing synchronization signal input from the outside, generates image data for each pixel, and generates image data for each pixel. It is provided to 310, and the driving timing of each of the data driver 310 and the scan driver 320 is controlled based on the timing synchronization signal. Additionally, the timing control unit 40 generates barrier data and supplies it to the barrier driver 600 so that a transmission area is formed throughout the barrier panel 200 in the 2D mode.

In addition, in 3D mode, the timing control unit 400 aligns the digital image signal to suit the stereoscopic image implementation method of the display panel 100 based on the digital image signal and timing synchronization signal input from the outside to produce left-eye image data and right-eye image. Data is generated and provided to the data driver 310, and the driving timing of each of the data driver 310 and the scan driver 320 is controlled based on the timing synchronization signal.

In addition, the timing control unit 400 generates barrier data for correcting the positions of the transmission area and light blocking area of the barrier panel based on the viewer's viewing position information in 3D mode and supplies it to the barrier driver 600.

The barrier panel 200 is located on the display panel 100. The barrier panel 200 provides the same or different images to the viewer's left and right eyes. For example, a display device according to an embodiment of the present invention selectively provides 2D images and 3D images to a viewer using the barrier panel 200. The barrier panel 200 can be controlled by the barrier driver 600. The barrier driver 600 may receive a signal from the timing control unit 400. For example, the barrier driver 600 may change the signal applied to the barrier panel 200 depending on the viewer's viewing position.

As shown in FIG. 4 , the barrier panel 200 includes upper and lower barrier substrates 210 and 220 facing each other with a barrier liquid crystal layer 230 therebetween.

The lower barrier substrate 210 is located close to the display panel 100. The lower barrier substrate 210 is made of a transparent insulating material. For example, the lower barrier substrate 210 may include glass or plastic.

The upper barrier substrate 220 is located on the lower barrier substrate 210. For example, the lower barrier substrate 210 is located between the upper display substrate 170 and the upper barrier substrate 220 of the display panel 100. The upper barrier substrate 220 is parallel to the lower barrier substrate 210. The upper barrier substrate 220 is made of a transparent insulating material. For example, the upper barrier substrate 220 may include glass or plastic. The upper barrier substrate 220 may include the same material as the lower barrier substrate 210 .

Channel electrodes CE are located on the surface of the lower barrier substrate 210 facing the upper barrier substrate 220. For example, the channel electrodes CE may be located between the lower barrier substrate 210 and the barrier liquid crystal layer 230. The channel electrodes CE may extend side by side in one direction. For example, the channel electrodes CE may cross the active area of the lower barrier substrate 210 . The channel electrodes CE are made of a transparent conductive material. For example, the channel electrodes CE are formed of transparent conductive materials such as ITO and IZO.

A plate-shaped reference electrode RE is located on the surface of the upper barrier substrate 220 facing the lower barrier substrate 210. The reference electrode RE is made of a transparent conductive material. For example, the reference electrode RE is formed of a transparent conductive material such as ITO and IZO. The reference electrode RE may be made of the same material as the channel electrodes CE.

The vertical electric field formed between these channel electrodes (CE) and the reference electrode (RE) changes the transmittance of the barrier liquid crystal layer 230. For example, the barrier liquid crystal layer (RE) includes liquid crystal in TN mode or ECB mode. A certain area of the barrier liquid crystal layer 230 overlapping each channel electrode (CE) may have a transmittance according to the vertical electric field between the corresponding channel electrode (CE) and the reference electrode (RE). Accordingly, the display device according to an embodiment of the present invention adjusts the channel voltage applied to the channel electrodes (CE) through the barrier driver 600 during 3D implementation to create light-shielding areas and transmission areas in the barrier panel 200. form In addition, when the display device according to an embodiment of the present invention is implemented in 2D, the barrier driver 600 does not apply voltage to the channel electrodes CE, and thus does not form a light blocking area in the barrier panel 200. For example, in a display device according to an embodiment of the present invention, the liquid crystal layer 230 of the barrier panel 200 may be in a normally white mode. Accordingly, in the display device according to an embodiment of the present invention, different images or the same image may be provided to the left and right eyes of the viewer. That is, the display device according to an embodiment of the present invention can selectively implement 2D images and 3D images.

In the display device according to the first embodiment of the present invention, each of the plurality of channel electrodes CE is arranged to intersect the data line DL, as shown in FIG. 2. Additionally, the plurality of channel electrodes CE are spaced apart in the left and right directions parallel to the scan line SL. That is, the scan line SL and the channel electrode CE extend along the vertical Y direction, and the data line DL extends along the horizontal X direction. The line width of each of the plurality of channel electrodes (CE) may be the same as or different from the line width of each sub-pixel (SP).

In this case, during the N (where N is a natural number greater than or equal to 1) frame period, the subpixels (SP) connected to the odd-numbered scan lines (SL1, SL3, and SL5) have data lines (as shown in FIG. 5). Image data corresponding to the right-eye image (R1) is addressed through DL), and the sub-pixels connected to the even-numbered scan lines (SL2, SL4, SL6) are addressed to the left-eye image (L1) through data lines (DL). The corresponding video data is addressed. At the same time, during the Nth frame period, the left eye image L1 and the right eye image R1 implemented on the display panel 100 are transmitted through the transmission area of the barrier panel 200 according to the viewer's viewing position. Meanwhile, in FIG. 5, the light blocking area of the barrier panel 200 is shown in gray, and the transmitting area is shown in transparent color.

Then, during the N+1th frame period, image data corresponding to the left eye image L2 is addressed to the subpixels connected to the odd scan lines SL1, SL3, and SL5 through the data lines DL, Image data corresponding to the right eye image R2 is addressed to the sub-pixels connected to the even-numbered scan lines SL2, SL4, and SL6 through the data lines DL. At the same time, during the N+1th frame period, the left eye image (L2) and the right eye image (R2) implemented on the display panel 100 are displayed through the transmission area of the barrier panel 200 shifted to the right according to the viewer's changed viewing position. It is transmitted.

Accordingly, in the present invention, the addressing timing of the image data (DData) written to the data line (DL) and the addressing timing of the channel data (CData) written to the channel electrode (CE) of the barrier panel 200 match, Temporal crosstalk can be improved. This will be explained in detail in conjunction with FIGS. 6A and 6B.

In the case of the comparative example, the data line DL extending in the vertical Y direction is arranged in parallel with the channel electrode CE of the barrier panel 200 and intersects the scan line SL extending in the horizontal X direction. arranged to do so. In this case, the image data (DData) supplied to the sub-pixels of the display panel 100 is addressed in the horizontal X direction shown in FIG. 6A, while the channel data (CData) is addressed in the vertical Y direction. . Specifically, when a high-level scan signal is supplied to the scan line (SL) crossing the channel electrode (CE), the thin film transistor is activated in the order from the sub-pixel (SP) closest to the scan driver 320 to the sub-pixel (SP) farther from the scan driver 320. is activated and the image data (DData) is addressed sequentially. At the same time, channel data (CData) is addressed to the channel electrode (CE) parallel to the data line (DL). That is, the image data (DData) supplied through the data line (DL) is addressed in the order from the sub-pixel (SP) closest to the scan driver 320 to the sub-pixel (SP) farthest from the scan driver 320, while the channel electrode ( The channel data (CData) supplied through the CE) is addressed in the order from the sub-pixel closest to the data driver 310 to the sub-pixel furthest from the data driver 310.

Accordingly, the farther the sub-pixel (SP) is from the scan driver 320, the channel data signal (CData) is supplied to the channel electrodes (CE) before the image data signal (DData) of the current frame is addressed, thereby increasing the viewer's viewing position. A transmission area of the barrier panel 200 is formed according to . In this case, since the video data signal (DData) of the current frame has not been addressed, the viewer views the video of the previous frame rather than the video of the current frame through the transparent area of the barrier panel 200. As such, in the comparative example, since the addressing timing of display data of the display panel 100 and the addressing timing of channel data of the barrier panel 200 do not match, temporal crosstalk occurs.

On the other hand, in the embodiment, as shown in FIG. 2, the data line DL extending in the X direction is disposed to intersect the channel electrode CE of the barrier panel 200, and the scan line extending in the Y direction ( SL) is placed to intersect. When a high-level scan pulse is supplied to the scan line (SL) parallel to the channel electrode (CE), the thin film transistors are activated in order from the sub-pixels closest to the scan driver 320 to the sub-pixels further away, and image data (DData) is sequentially generated. is addressed. At the same time, the channel data (CData) is addressed to the channel electrode (CE) parallel to the scan line (SL) in a direction parallel to the addressing direction of the image data (DData). That is, the image data (DData) is addressed in the vertical Y direction as shown in FIG. 6B, and the channel data (CData) is also addressed in the vertical Y direction.

Accordingly, the image data signal (DData) of the current frame is addressed in the order from the sub-pixel (SP) closest to the scan driver 320 to the sub-pixel (SP) farther from the scan driver 320, and at the same time, the channel electrodes (CE) In each case, the channel data CData is addressed in the order from the area overlapping with the sub-pixel SP closest to the scan driver 320 to the area overlapping with the sub-pixel farther from the scan driver 320. Accordingly, the viewer views the left-eye image and the right-eye image of the current frame in three dimensions through the transmission area of the barrier panel 200.

As such, in the embodiment of the present invention, since the addressing timing of the image data (DData) of the display panel and the addressing timing of the channel data (CData) of the barrier panel 200 match, temporal crosstalk can be improved.

Figure 7 is a diagram for explaining a first embodiment of a 3D implementation method of a display device according to the present invention.

As shown in FIG. 7, according to face tracking of the viewer position detection unit 500, the timing control unit 400 calculates the viewer's position coordinates and senses the viewing position information (x1, z1). The timing control unit 400 generates barrier data based on the sensed viewing position information (x1, z1) and supplies it to the barrier driver 200, and based on the sensed viewing position information (x1, z1), the left eye image is generated. Data corresponding to (L1) and the right eye image (R1) is generated and supplied to the data driver 310. The barrier driver 600 generates the first and second channel voltages based on the barrier data and supplies them to a plurality of channel electrodes (CE) parallel to the scan line (SL), so that the barrier panel 200 collects the viewer's viewing location information. By creating a light blocking area and a transmission area based on the light blocking area and the transmission area, each of the left eye image L1 and the right eye image R1 displayed on the display panel 210 transmits the transmission area.

Afterwards, when the viewer's viewing location information is shifted left or right (x2, y2) from the initial viewing location information (x1, z1) according to the face tracking of the viewer location detection unit 500, the changed viewer's Based on the viewing position information (x2, z2), the timing control unit 400 generates barrier data for correcting the positions of the transmission area and the light blocking area of the barrier panel 200 and supplies it to the barrier driver 600. Additionally, the timing control unit 400 generates data corresponding to the left eye image (L2) and the right eye image (R2) based on the changed viewer's viewing position information (x2, z2) and supplies it to the data driver 310.

The barrier driver 600 generates first and second channel voltages of different levels based on the barrier data and supplies them to a plurality of channel electrodes CE parallel to the scan line SL. Accordingly, the barrier panel 200 creates a light blocking area and a transmission area that are shifted as much as the viewer's viewing position information is shifted. At the same time, each of the left-eye image (L2) and right-eye image (R2) changed according to the viewer's shifted viewing position information passes through the transmission area.

8A and 8B are diagrams for explaining a second embodiment of a 3D implementation method of a display device according to the present invention.

As shown in FIGS. 8A and 8B, one frame period is time divided into first and second sub-frame periods (SF1 and SF2). In this case, if the frame rate of the image data input from the host system to the timing control unit 140 is 60 Hz, the timing control unit 140 multiplies the frame rate by 2 to generate left eye image data and right eye image data at a frame rate of 120 Hz. It is supplied to the data driver 310. Accordingly, during the first sub-frame period SF1 of the first frame, the left-eye image L1 and the right-eye image R1 are alternately arranged in the vertical direction on the display panel, as shown in FIG. 8A. Additionally, during the second sub-frame period (SF2) of the first frame, the left-eye image (L1) and the right-eye image (R1) are disposed on the display panel so that their positions are opposite to those of the first sub-frame period (SF1). At the same time, based on the viewer's viewing position information (x1, z1), the barrier panel 200 creates a light blocking area and a transmission area, and the left eye image is transmitted through the transmission area of the barrier panel during each sub-frame period (SF1, SF2). and right eye images are transmitted.

In this way, one frame is divided into first and second sub-frames and the composite image of the left-eye image and the right-eye image and the composite image of the right-eye image and the left-eye image are continuously driven, so the present invention can implement a three-dimensional image without resolution degradation. there is.

In addition, the viewer's viewing location information is calculated according to face tracking of the viewer location detection unit 500. Based on the calculated viewing position information, a change in the viewer's viewing position is calculated as shown in FIG. 8B, and a light blocking area and a transmission area of the barrier panel 200 are created according to the changed viewing position (X2, z2). At the same time, one frame is divided into first and second sub-frames (SF1, SF2) and continuously synthesized the left eye image (L2) and the right eye image (R2), and the right eye image (R2) and the left eye image (L2). By driving the image, the present invention can implement three-dimensional images without resolution degradation.

Figure 9 is a cross-sectional view showing a barrier panel of a display device according to a second embodiment of the present invention.

The barrier panel 200 of the display device shown in FIG. 9 is the same as the barrier panel 200 shown in FIG. 4 except that the reference electrode RE is divided into multiple pieces and intersects the channel electrode CE. Equipped with components. Accordingly, detailed descriptions of the same components will be omitted.

The barrier panel 200 includes a plurality of channel electrodes (CE) disposed on the lower barrier substrate 210 and a plurality of reference electrodes (RE) disposed on the upper barrier substrate 220.

Since each of the plurality of channel electrodes (CE) extends in the vertical Y direction parallel to the data line (DL), the plurality of channel electrodes (CE) are spaced apart in the left and right directions.

Each of the plurality of reference electrodes RE extends in the horizontal Each of the plurality of reference electrodes RE is arranged in the same number as the scan line SL or in a smaller number than the scan line SL. Since these plurality of reference electrodes RE are arranged in parallel with the scan line SL, they are scanned in a direction parallel to the scanning direction of the scan line SL. Accordingly, the transmission area and light blocking area can be adjusted by changing the channel voltage applied to the channel electrode (CE) and the reference voltage applied to the reference electrode (RE) according to the viewer's viewing position.

Figures 10A and 10B are diagrams showing an example in which the transmission area and light blocking area of the barrier panel according to the present invention are shifted to the right by one channel as the viewing position changes. In Figures 10a and 10b, the light blocking area is indicated in black and the transmitting area is indicated in white.

Based on the barrier data according to the coordinate information calculated by the viewer position detection unit 500, the corresponding reference voltages (RV1, RV2) are supplied to each of the plurality of reference electrodes (RE) and the corresponding reference voltages (RV1, RV2) are supplied to each of the plurality of channel electrodes (CE). Apply the corresponding channel voltages (CV1, CV2). At this time, the plurality of reference electrodes RE are scanned in a direction parallel to the scan direction of the scan line SL. The arrangement of the liquid crystal molecules in the liquid crystal layer changes due to the electric field formed according to the difference between the reference voltage and the channel voltage, so that the barrier panel 200 has a mosaic-shaped light blocking area and a transmission area that are alternately arranged as shown in FIG. 10A. is formed For example, the first channel voltage (CV1) is applied to the first channel electrode group (CG1) including the first to fourth, ninth, and tenth channel electrodes (CE1-CE4, CE9, and CE10) corresponding to the light blocking area. Supplying a second channel voltage (CV2) lower than the first channel voltage (CV1) to the second channel electrode group (CG2) including the fifth to eighth channel electrodes (CE5-CE8) corresponding to the transmission area, and , applying a first reference voltage (RV1) at the same level as the first channel voltage (CV1) to the first reference electrode group (RG1) including the first to third reference electrodes (RE1-RE3) corresponding to the light blocking area, The second reference electrode group (RG2) including the fourth to eighth reference electrodes (RE4-RE8) corresponding to the transmission area is lower than the first reference voltage (RV1) and is at the same level as the second channel voltage (CV2). A second reference voltage (RV2) is supplied. For example, the first channel voltage (CV1) and the first reference voltage (RV1) are 6V, and the second channel voltage (CV2) and the second reference voltage (RV2) are 0V.

In this case, a light blocking area is formed at the intersection of the first channel electrode group (CG1) and the first reference electrode group (RG1) and at the intersection of the second channel electrode group (CG2) and the second reference electrode group (RG2). A transmission area is formed at the intersection of the second channel electrode group CG2 and the first reference electrode group RG1, and at the intersection of the first channel electrode group CG1 and the second reference electrode group RG2. . Accordingly, the transmission area and the light blocking area are formed in a mosaic pattern.

These transmission areas and light blocking areas adjust the areas of the channel electrodes (CE) to which the channel voltages (CV1, CV2) are supplied according to changes in the user's viewing position, or adjust the channel voltages (CV1, CV2) and reference voltages (RV1, RV2). This is shifted by adjusting the areas of the supplied channel electrode (CE) and reference electrodes (RE). For example, as shown in FIG. 10B, the light blocking area and the transmission area are shifted to the right by one channel as the viewing position changes. For this purpose, the first channel voltage (CV1) is applied to the first channel electrode group (CG1) including the second to fifth and tenth channel electrodes (CE2-CE5, CE10) corresponding to the light blocking area, and corresponding to the transmission area. Supplying a second channel voltage (CV2) lower than the first channel voltage (CV1) to the second channel electrode group (CG2) including the first and sixth to ninth channel electrodes (CE1, CE6-CE9), A first reference voltage (RV1) having the same level as the first channel voltage (CV1) is transmitted through the first reference electrode group (RG1) including the first to third reference electrodes (RE1-RE3) corresponding to the light blocking area. A second reference electrode group (RG2) including the fourth to eighth reference electrodes (RE4-RE8) corresponding to the region is lower than the first reference voltage (RV1) and has the same level as the second channel voltage (CV2). 2 Supply the reference voltage (RV2). In this case, a light blocking area is formed at the intersection of the first channel electrode group (CG1) and the first reference electrode group (RG1) and at the intersection of the second channel electrode group (CG2) and the second reference electrode group (RG2). A transmission area is formed at the intersection of the second channel electrode group CG2 and the first reference electrode group RG1, and at the intersection of the first channel electrode group CG1 and the second reference electrode group RG2. .

In this way, in the present invention, the positions of the transmission area and the light blocking area of the barrier panel 200 are matched to the viewer's viewing position, so that a three-dimensional image can be realized without crosstalk even if the viewer's viewing position changes.

Meanwhile, the present invention has been described using a barrier panel having a liquid crystal layer as an example, but the present invention can also be applied to a barrier panel having a lens array.

The above description is merely an exemplary description of the present invention, and various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Accordingly, the embodiments disclosed in the specification of the present invention do not limit the present invention. The scope of the present invention should be interpreted in accordance with the scope of the patent claims below, and all technologies within the equivalent scope thereof should be interpreted as being included in the scope of the present invention.

100: display panel 140: light emitting device
200: barrier panel 300: display driving unit
310: data driver 320: scan driver
400: Timing control unit 500: Viewer position detection unit
600: Barrier driving unit

Claims (8)

a display panel including a plurality of sub-pixels disposed at the intersection of a scan line and a data line, and displaying a left-eye image and a right-eye image;
a barrier panel disposed on the display panel and including a reference electrode and a channel electrode;
a timing control unit that calculates viewer viewing position information for the display panel; and
A barrier driver that determines the positions of the light blocking area and the transmission area of the barrier panel based on the viewer's viewing position information,
The barrier panel includes a plurality of channel electrodes, a reference electrode disposed on top of the plurality of channel electrodes, and a barrier liquid crystal layer disposed between the reference electrode and the plurality of channel electrodes,
The barrier driver supplies a first channel voltage to a plurality of first channel electrodes corresponding to the light blocking area among the plurality of channel electrodes, and supplies a first channel voltage higher than the first channel voltage to a plurality of second channel electrodes corresponding to the transmission area. A display device supplying a low second channel voltage. delete According to claim 1,
The scan line is arranged in a first direction, the data line is arranged in a second direction,
A display device wherein the plurality of channel electrodes are arranged to be spaced apart from each other along the same first direction as the scan line and intersect the data line arranged in the second direction. delete delete According to claim 1,
The reference electrode includes a plurality of reference electrodes,
The plurality of reference electrodes are spaced apart from each other in the vertical direction along the same direction as the scan line is arranged,
A display device wherein the plurality of channel electrodes are spaced apart in left and right directions along the same direction in which the data lines are arranged. According to claim 6,
The barrier driving unit
A display device that supplies a first reference voltage to a reference electrode corresponding to the light blocking area and a second reference voltage to a reference electrode corresponding to the transmission area set based on the viewer's viewing position information. According to claim 7,
The barrier driving unit
The first reference voltage supplies a voltage equal to the first channel voltage, and the second reference voltage supplies a voltage lower than the first reference voltage and the same level as the second channel voltage.

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