KR20220006720A - Stereoscopic display apparatus having a display panel and a barrier panel - Google Patents

Abstract

The present invention relates to a stereoscopic image display device in which a barrier panel is positioned on a display panel. The barrier panel includes a barrier liquid crystal layer positioned between the first barrier substrate and the second barrier substrate, channel electrodes positioned side by side between the first barrier substrate and the barrier liquid crystal layer, and between the channel electrodes and the barrier liquid crystal layer. and common electrodes positioned side by side on the , and a barrier insulating layer positioned between the channel electrodes and the common electrodes. The channel electrodes and the common electrodes may cross an active region of the barrier panel. The common electrodes may be spaced apart from each other. Accordingly, in the stereoscopic image display device, defects due to conductive foreign substances can be prevented.

Description

A stereoscopic image display apparatus including a display panel and a barrier panel {Stereoscopic display apparatus having a display panel and a barrier panel}

The present invention relates to a stereoscopic image display device in which a barrier panel is positioned on a display panel.

In general, a display device includes a display panel that implements an image. The display device may selectively provide a 2D image and a 3D image to the user. For example, the display device may be a stereoscopic image display device in which a barrier panel is positioned on a display panel.

The barrier panel may selectively separate an image implemented by the display panel. For example, the barrier panel may provide different images to the user's left eye and right eye. Light blocking areas and light transmitting areas may be formed in the barrier panel. For example, the barrier panel may include a barrier liquid crystal layer positioned between the first barrier substrate and the second barrier substrate, channel electrodes positioned side by side between the first barrier substrate and the barrier liquid crystal layer, and the barrier liquid crystal layer and the A common electrode layer disposed between the second barrier substrates may be included.

However, a conductive foreign material generated in the manufacturing process may be deposited on the uppermost layer of the first barrier substrate and the uppermost layer of the second barrier substrate facing the barrier liquid crystal layer. Accordingly, in the stereoscopic image display device, channel electrodes positioned on the uppermost layer of the first barrier substrate facing the barrier liquid crystal layer may be unintentionally connected to each other by a conductive foreign material. That is, in the stereoscopic image display device, an unintentional light blocking area or a light transmitting area may be formed by a conductive foreign material. Accordingly, in the stereoscopic image display apparatus, the quality of an image provided to a user may be deteriorated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a stereoscopic image display device capable of preventing image quality deterioration due to a barrier panel.

Another object of the present invention is to provide a stereoscopic image display device capable of preventing unintentional connection of adjacent channel electrodes due to a conductive foreign material generated in a manufacturing process.

The problems to be solved by the present invention are not limited to the aforementioned problems. Problems not mentioned herein may be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, a stereoscopic image display device includes a display panel. The display panel implements an image. A barrier panel is positioned on the display panel. The barrier panel includes a first barrier substrate, channel electrodes, a barrier insulating layer, first common electrodes, a barrier liquid crystal layer, and a second barrier substrate stacked in order. The channel electrodes and the first common electrodes extend in the first direction to cross the active area of the barrier panel. The first common electrodes are spaced apart from each other in the second direction. The second direction is perpendicular to the first direction.

A distance between adjacent first common electrodes may be smaller than a width of each channel electrode.

The barrier panel may include a common voltage supply line positioned outside the active region. The first common electrodes may be electrically connected to the common voltage supply line.

The common voltage supply line may have higher electrical conductivity than the first common electrodes.

The common voltage supply line may have a closed loop shape extending along an edge of the active region. Both ends of each of the first common electrodes may be connected to a common voltage supply line.

The barrier panel may include source drivers and link wires. The source drivers may be located outside the active area. The link wires may connect each channel electrode to one of the source drivers. The link wirings may be located outside the common voltage supply line.

The barrier panel may include at least one second common electrode. The second common electrode may connect between adjacent first common electrodes.

The second common electrode may extend to be inclined in the first direction.

The second common electrode may cross at least one first common electrode.

The shape of each channel electrode extending in the first direction may be a zigzag shape.

According to an aspect of the present invention for achieving another object to be solved, a stereoscopic image display device includes a display panel. A first barrier substrate is positioned on the display panel. The first channel electrodes are positioned side by side on the first barrier substrate. A channel insulating layer is positioned on the first channel electrodes. Second channel electrodes are positioned on the channel insulating layer. The second channel electrodes are positioned between the first channel electrodes. A barrier insulating layer is positioned on the second channel electrodes. Common electrodes are positioned side by side on the barrier insulating layer. The common electrodes are spaced apart from each other. A barrier liquid crystal layer is positioned on the common electrodes. A second barrier substrate is positioned on the barrier liquid crystal layer. A distance between adjacent second channel electrodes is equal to a width of each second channel electrode. A distance between adjacent common electrodes is smaller than a distance between adjacent second channel electrodes.

A width of each of the first channel electrodes may be greater than a width of each of the second channel electrodes.

A barrier buffer layer may be positioned between the first barrier substrate and the first channel electrodes. A common voltage supply line may be positioned between the first barrier substrate and the barrier buffer layer. The first barrier substrate may include an active region and a peripheral region. The first channel electrodes, the second channel electrodes, and the common electrodes may cross the active region in parallel. The peripheral region may be located outside the active region. The common voltage supply line may be located on the peripheral area.

The common voltage supply line may have a lower resistance than the first channel electrodes, the second channel electrodes, and the common electrodes.

Link wirings may be positioned between the peripheral region of the first barrier substrate and the barrier buffer layer. The link wirings may be spaced apart from the common voltage supply line. The first channel electrodes and the second channel electrodes may be connected to one of the link wires, respectively.

The link wires may have higher electrical conductivity than the first channel electrodes and the second channel electrodes.

The link wirings may include the same material as the common voltage supply line.

A width of each common electrode may be smaller than a width of each second channel electrode.

A stereoscopic image display device according to the inventive concept may include a barrier insulating layer and common electrodes in which a barrier panel positioned on a display panel is sequentially stacked between channel electrodes and a barrier liquid crystal layer. Accordingly, in the stereoscopic image display device according to the technical idea of the present invention, defects caused by conductive foreign substances generated in the manufacturing process can be prevented. Accordingly, in the stereoscopic image display device according to the technical idea of the present invention, deterioration of image quality due to the barrier panel can be prevented.

1 is a diagram schematically illustrating a stereoscopic image display device according to an embodiment of the present invention.
2 is a plan view of a barrier panel of a stereoscopic image display device according to an embodiment of the present invention.
3A is a view showing cross-sections taken along lines I-I' and II-II' of FIG. 2 .
FIG. 3B is a view showing a cross-section taken along line III-III′ of FIG. 2 .
4A to 4D are views illustrating a plan view of a barrier panel of a stereoscopic image display device according to another exemplary embodiment of the present invention.
5A is a plan view of channel electrodes of a stereoscopic image display device according to another embodiment of the present invention.
5B is a graph illustrating relative transmittances of light blocking regions and light transmitting regions of a barrier panel when channel electrodes extend in a zigzag shape in a stereoscopic image display device according to another embodiment of the present invention.
6A is a diagram illustrating the relative positions of a display panel and a barrier panel of a stereoscopic image display device according to an exemplary embodiment of the present invention.
FIG. 6B is an enlarged view of region P of FIG. 6A .
7 is a diagram illustrating a relative position of a display panel and a barrier panel of a stereoscopic image display device according to another exemplary embodiment of the present invention.

Details regarding the above object and technical configuration of the present invention and the effects thereof will be more clearly understood by the following detailed description with reference to the drawings showing an embodiment of the present invention. Here, since the embodiments of the present invention are provided so that the technical idea of the present invention can be sufficiently conveyed to those skilled in the art, the present invention may be embodied in other forms so as not to be limited to the embodiments described below.

In addition, parts indicated with the same reference numerals throughout the specification mean the same components, and in the drawings, the length and thickness of a layer or region may be exaggerated for convenience. In addition, when it is described that a first component is "on" a second component, the first component is not only located above the first component in direct contact with the second component, but also the first component and the A case in which a third component is positioned between the second component is also included.

Here, terms such as first and second are used to describe various components, and are used for the purpose of distinguishing one component from other components. However, within the scope not departing from the spirit of the present invention, the first component and the second component may be arbitrarily named according to the convenience of those skilled in the art.

Terms used in the specification of the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. For example, elements expressed in the singular include plural elements unless the context clearly means only the singular. In addition, in the specification of the present invention, terms such as "comprises" or "have" are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, one or It should be understood that it does not preclude the possibility of addition or existence of further other features or numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and, unless explicitly defined in the specification of the present invention, have an ideal or excessively formal meaning. not interpreted

(Example)

1 is a diagram schematically illustrating a stereoscopic image display device according to an embodiment of the present invention. 2 is a plan view of a barrier panel of a stereoscopic image display device according to an embodiment of the present invention. 3A is a view showing cross-sections taken along lines I-I' and II-II' of FIG. 2 . FIG. 3B is a view showing a cross-section taken along line III-III′ of FIG. 2 .

1 , 2 , 3A and 3B , a stereoscopic image display device according to an embodiment of the present invention may include a display panel 100 and a barrier panel 200 . The display panel 100 may implement an image to be provided to a user. The display panel 100 may be controlled by the display driver 300 . The display driver 300 may provide various signals for image implementation to the display panel 100 . For example, the display driver 300 may include a data driver 310 that applies a data signal to the display panel 100 and a scan driver 320 that applies a scan signal to the display panel 100 . have. The display driver 300 may be electrically connected to the timing controller 400 . For example, the data driver 310 receives digital video data and a source timing control signal from the timing controller 400 , and the scan driver 320 receives clock signals and resets from the timing controller 400 . Clock signals and start signals may be transmitted.

The barrier panel 200 may be positioned on the display panel 100 . The barrier panel 200 may separate an image implemented by the display panel 100 . Light blocking areas and light transmitting areas capable of providing different images to the user's left and right eyes may be selectively formed on the barrier panel 200 . For example, the barrier panel 200 may include a barrier liquid crystal layer 230 positioned between the first barrier substrate 210 and the second barrier substrate 220 , the first barrier substrate 210 and the barrier liquid crystal layer Channel electrodes 240 positioned between 230 , common electrodes 250 positioned between the channel electrodes 240 and the barrier liquid crystal layer 230 , and the channel electrodes 240 and the common A barrier insulating layer 216 positioned between the electrodes 250 may be included.

The first barrier substrate 210 and the second barrier substrate 220 may include an insulating material. The first barrier substrate 210 and the second barrier substrate 220 may include a transparent material. For example, the first barrier substrate 210 and the second barrier substrate 220 may include glass or plastic. The second barrier substrate 220 may include a material different from that of the first barrier substrate 210 .

The barrier liquid crystal layer 230 may have transmittance according to an electric field formed by the channel electrodes 240 and the common electrodes 250 . For example, the barrier liquid crystal layer 230 may include a liquid crystal. Accordingly, the stereoscopic image display device according to an embodiment of the present invention controls the corresponding region of the barrier liquid crystal layer 230 by controlling the voltage applied to each channel electrode 240 , thereby forming the barrier panel 200 . Light blocking areas and the light transmitting areas may be formed.

The barrier panel 200 may be controlled by the barrier driver 500 . For example, the voltage applied to each channel electrode 240 may be adjusted by the barrier driver 500 . The barrier driver 500 may be electrically connected to the timing controller 400 . Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, the light blocking areas and the light transmitting areas of the barrier panel 200 may be formed in correspondence to the image implemented by the display panel 100 . The timing controller 400 may be electrically connected to the viewing position detecting unit 600 . The viewing position detecting unit 600 may detect the user's position. For example, the viewing position detecting unit 600 may include a camera. The signal of the timing controller 400 provided to the display driver 300 and the barrier driver 600 may be adjusted according to a user's location. For example, the light blocking areas and the light transmitting areas of the barrier panel 200 may be moved according to a change in a user's position.

The barrier panel 200 may include an active area AA and a peripheral area PA. For example, the first barrier substrate 210 and the second barrier substrate 220 may include the active area AA and the peripheral area PA, respectively. The image implemented by the display panel 100 may pass through the active area AA of the barrier panel 200 to be provided to the user. For example, the light blocking areas and the light transmitting areas may be formed in the active area AA of the barrier panel 200 . The peripheral area PA may be located outside the active area AA. For example, the active area AA may be surrounded by the peripheral area PA. The barrier liquid crystal layer 230 may overlap the active area AA of the barrier panel 200 . For example, a sealing member for defining a position of the barrier liquid crystal layer 230 may be positioned on the peripheral area PA of the barrier panel 200 .

The channel electrodes 240 may be positioned side by side between the first barrier substrate 210 and the barrier liquid crystal layer 230 . The channel electrodes 240 may cross the active area AA of the barrier panel 200 . For example, the channel electrodes 240 may extend in the first direction (Y). The channel electrodes 240 may include a conductive material. The channel electrodes 240 may include a transparent material. For example, each channel electrode 240 may be a transparent electrode formed of a transparent conductive material such as ITO and IZO.

Each channel electrode 240 may be insulated from adjacent channel electrodes 240 . For example, the channel electrodes 240 may have a structure in which first channel electrodes 241 and second channel electrodes 242 are stacked. A channel insulating layer 214 may be positioned between the first channel electrodes 241 and the second channel electrodes 242 . The channel insulating layer 214 may include an insulating material. For example, the channel insulating layer 214 may include silicon oxide. The second channel electrodes 242 may be insulated from the first channel electrodes 241 by the channel insulating layer 214 . The second channel electrodes 242 may be positioned between the first channel electrodes 241 . For example, the first channel electrodes 241 are positioned to be spaced apart from each other between the first barrier substrate 210 and the channel insulating layer 214 , and the channel insulating layer 214 and the barrier liquid crystal layer 230 are spaced apart from each other. The second channel electrodes 242 are positioned to be spaced apart from each other therebetween, and a space between the adjacent second channel electrodes 242 may overlap one of the first channel electrodes 241 . Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, all regions of the barrier liquid crystal layer 230 overlapping the active region AA may be controlled by the channel electrodes 240 .

A distance d1 between adjacent second channel electrodes 242 may be equal to a width w2 of each second channel electrode 242 . A portion of the barrier liquid crystal layer 230 overlapping the space between the adjacent second channel electrodes 242 may be controlled by the corresponding first channel electrode 241 . That is, in the stereoscopic image display device according to the embodiment of the present invention, a partial region of the barrier liquid crystal layer 230 controlled by each first channel electrode 241 is controlled by each second channel electrode 242 . It may have the same width as a partial region of the barrier liquid crystal layer 230 . Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, each light blocking area and each light transmitting area may be formed to have the same width. Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, the movement of the light-blocking areas and the light-transmitting areas according to a change in the user's position can be naturally recognized by the user.

A width w1 of each first channel electrode 241 may be greater than a width w2 of each second channel electrode 242 . Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, defects due to misalignment of the first channel electrodes 241 and the second channel electrodes 242 can be prevented. Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, a process margin and process efficiency may be improved.

The channel electrodes 240 may be electrically connected to the barrier driver 500 . For example, the active area AA of the barrier panel 200 is divided into a plurality of blocks B1-Bn, and each block B1-Bn is provided in the peripheral area PA of the barrier panel 200 . ) corresponding to the source drivers 260 are positioned side by side, and each channel electrode 240 may be connected to the corresponding source driver 260 through one of the link wires 270 . Each source driver 260 may include a driving driver IC 265 . Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the area occupied by the link wires 270 may be minimized. Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the area of the active area AA may be maximized.

The same number of channel electrodes 240 may be positioned in each block B1-Bn. The channel electrodes 240 positioned in each block B1-Bn may be connected to the same source driver 260 . Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the voltage applied to each channel electrode 240 can be effectively controlled.

The link wirings 270 may include a conductive material. The link wires 270 may include a material different from that of the channel electrodes 240 . The link wires 270 may have higher electrical conductivity than the channel electrodes 240 . The link wires 270 may have a lower resistance than the channel electrodes 240 . For example, the link wirings 270 may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tungsten (W). The link wires 270 may have lower transmittance than the channel electrodes 240 . For example, the link wires 270 may be positioned on the peripheral area PA of the barrier panel 200 . The link wires 270 may be spaced apart from the active area AA of the barrier panel 200 . For example, each channel electrode 240 may be connected to one of the link wires 270 on the peripheral area PA of the barrier panel 200 .

The link wires 270 may be positioned on a different layer from the channel electrodes 240 . For example, the barrier panel 200 includes a barrier buffer layer 212 positioned between the first barrier substrate 210 and the channel electrodes 240 , and the link wires 270 are It may be positioned between the first barrier substrate 210 and the barrier buffer layer 212 . The barrier buffer layer 212 may include an insulating material. For example, the barrier buffer layer 212 may include silicon oxide. The barrier buffer layer 212 may include the same material as the channel insulating layer 214 . The barrier buffer layer 212 may include link contact holes exposing a partial region of each link line 270 . Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the channel electrodes 240 may not be affected by the process of forming the link wires 270 . Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the degree of freedom with respect to materials and methods of forming the link wires 270 may be improved.

The common electrodes 250 may be positioned side by side between the second channel electrodes 242 and the barrier liquid crystal layer 230 . The barrier insulating layer 216 may be positioned between the second channel electrodes 242 and the common electrodes 250 . The barrier insulating layer 216 may include an insulating material. For example, the barrier insulating layer 216 may include silicon oxide. The barrier insulating layer 216 may include the same material as the channel insulating layer 214 . The common electrodes 250 may be insulated from the channel electrodes 240 by the barrier insulating layer 216 .

The common electrodes 250 may extend parallel to the channel electrodes 240 . For example, the common electrodes 250 may extend in the first direction (Y). The common electrodes 250 may cross the active area AA of the barrier panel 200 . The common electrodes 250 may include a conductive material. The common electrodes 250 may include a transparent material. For example, each common electrode 250 may be a transparent electrode formed of a transparent conductive material such as ITO and IZO. The common electrodes 250 may include the same material as the first channel electrodes 241 and the second channel electrodes 242 .

Each common electrode 250 may be spaced apart from adjacent common electrodes 250 . For example, the common electrodes 250 may be spaced apart from each other in a second direction (X) perpendicular to the first direction (Y). Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, a horizontal electric field generated by the channel electrodes 240 and the common electrodes 250 is generated in the barrier liquid crystal layer 230 . can be authorized The barrier liquid crystal layer 230 may include a liquid crystal in a mode using a horizontal electric field. For example, the barrier liquid crystal layer 230 may include an IPS mode liquid crystal.

A distance d2 between adjacent common electrodes 250 may be constant. For example, a distance d2 between adjacent common electrodes 250 may be smaller than a width w2 of each second channel electrode 242 . Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the light-blocking regions and the light-transmitting regions formed by the voltage applied to each channel electrode 240 may be concentrated. A width w3 of each common electrode 250 may be smaller than a width w2 of each second channel electrode 242 . Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the light blocking areas and the light transmitting areas may move naturally.

A common voltage supply line Vcom and a ground line GND may be positioned on the peripheral area PA of the barrier panel 200 . The common voltage supply line Vcom may be positioned between the active area AA and the ground line GND. The ground line GND may prevent distortion of a signal applied through the channel electrodes 240 due to an external electric/magnetic field. The ground line GND may extend along an edge of the active area AA. For example, the remaining three side surfaces except for the side surface of the active area AA facing the source drivers 260 may be surrounded by the ground line GND. The common voltage supply line Vcom may be electrically connected to the common electrodes 250 . The common voltage supply line Vcom may be spaced apart from the active area AA. The common voltage supply line Vcom may extend parallel to the ground line GND. For example, the common voltage supply line Vcom has a closed loop shape extending along an edge of the active area AA, and both ends of each common electrode 250 are disposed in the peripheral area PA. may be connected to the common voltage supply line Vcom. Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, variations in voltage applied through each common electrode 250 can be prevented.

The common voltage supply line Vcom may include a conductive material. The common voltage supply line Vcom may include a material different from that of the common electrodes 250 . The common voltage supply line Vcom may have higher electrical conductivity than the common electrodes 250 . The common voltage supply line Vcom may have a lower resistance than the common electrodes 250 . For example, the common voltage supply line Vcom may include a metal such as aluminum (Al), titanium (Ti), copper (Cu), molybdenum (Mo), and tungsten (W). The common voltage supply line Vcom may have a lower transmittance than the common electrodes 250 .

The common voltage supply line Vcom may be located on a layer different from that of the common electrodes 250 . For example, the common voltage supply line Vcom may be positioned between the first barrier substrate 210 and the barrier buffer layer 212 . The common voltage supply line Vcom may include the same material as the link wires 270 . For example, the common voltage supply line Vcom may have a lower resistance than the first channel electrodes 241 and the second channel electrodes 242 . The common voltage supply line Vcom may be spaced apart from the link wirings 270 . For example, the link wires 270 may be positioned outside the common voltage supply line Vcom. The common voltage supply line Vcom may cross between the link lines 270 and the active area AA. Each channel electrode 240 may cross the common voltage supply line Vcom between the source drivers 260 and the active area AA.

As a result, in the stereoscopic image display device according to an embodiment of the present invention, the barrier panel 200 includes the common electrodes 250 positioned between the channel electrodes 240 and the barrier liquid crystal layer 230 . can do. Accordingly, in the stereoscopic image display device according to the embodiment of the present invention, the conductive foreign material generated during the manufacturing process is the uppermost layer of the first barrier substrate 210 facing the barrier liquid crystal layer 230 and the second barrier substrate ( When deposited on the uppermost layer of the 220 , the adjacent common electrodes 250 may be connected by the conductive foreign material. That is, in the stereoscopic image display device according to an embodiment of the present invention, adjacent channel electrodes 240 may not be connected by a conductive foreign material generated during the manufacturing process. Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, defects due to conductive foreign matter generated during the manufacturing process can be prevented.

In addition, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the channel electrodes 240 having a double layer structure connect the link wires 270 and the source drivers 260 to each other. may be electrically connected to the barrier driving unit 500 through the Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, the area occupied by the link wires 270 is reduced, and the channel electrodes 240 and the link wires 270 are reduced. ) to secure enough space to connect between them. Accordingly, in the barrier panel 200 of the stereoscopic image display device according to an embodiment of the present invention, each channel electrode 240 may be stably connected to the corresponding link wire 270 .

In the stereoscopic image display device according to an embodiment of the present invention, it is described that the barrier panel 200 includes the common electrodes 250 extending parallel to the channel electrodes 240 . However, in the stereoscopic image display device according to another embodiment of the present invention, the barrier panel 200 may include common electrodes 250 having various shapes. For example, as shown in FIG. 4A , in the stereoscopic image display device according to another embodiment of the present invention, the barrier panel 200 may include a common electrode 250 having a mesh shape. The common electrode 250 may include first common electrodes 251 extending in the first direction (Y) and second common electrodes 252 extending in the second direction (X). The second common electrodes 252 may be positioned on the same layer as the first common electrodes 251 . The second common electrodes 252 may include the same material as the first common electrodes 251 . For example, the second common electrodes 252 may be formed simultaneously with the first common electrodes 251 . The second common electrodes 252 may extend onto the peripheral area PA. For example, both ends of each second common electrode 252 may be connected to the common voltage supply line Vcom on the peripheral area PA. Accordingly, in the stereoscopic image display device according to another embodiment of the present invention, a luminance deviation due to a voltage drop in the active area AA may be prevented.

In a stereoscopic image display device according to another embodiment of the present invention, as shown in FIG. 4B , the common electrode 250 of the barrier panel 200 includes first common electrodes extending in the first direction Y. 251 and second common electrodes 253 partially connecting between the two adjacent first common electrodes 251 may be included. A position of each second common electrode 253 may be arbitrarily determined. For example, each second common electrode 253 may have a bar shape extending in the second direction X. A length of each second common electrode 253 may be the same as a distance between adjacent first common electrodes 251 . Accordingly, in the stereoscopic image display device according to another embodiment of the present invention, moire generated by repetition of a specific pattern may be prevented.

In a stereoscopic image display device according to another embodiment of the present invention, as shown in FIG. 4C , the common electrode 250 of the barrier panel 200 includes first common electrodes extending in the first direction (Y). 251 and at least one second common electrode 254 extending obliquely in the first direction Y. The second common electrode 254 may cross at least one first common electrode 251 . The second common electrode 254 may cross the active area AA. For example, the second common electrode 254 may be connected to the common voltage supply line Vcom on the peripheral area PA. Accordingly, in the stereoscopic image display device according to another embodiment of the present invention, a deviation in the voltage applied through the common electrode 250 can be effectively prevented.

In a stereoscopic image display device according to another embodiment of the present invention, as shown in FIG. 4D , the first common electrodes 251 of the barrier panel 200 extend in the first direction Y to make the active Crossing the area AA, the second common electrodes 255 of the barrier panel 200 may extend in the active area AA to be inclined in the first direction Y. Each second common electrode 255 may cross one of the first common electrodes 251 . For example, each second common electrode 255 may connect between the three adjacent first common electrodes 251 . The second common electrodes 255 may be spaced apart from each other. For example, the positions of the second common electrodes 255 may be arbitrarily determined. The second common electrodes 255 may have different inclination angles. For example, some of the second common electrodes 255 may have a symmetrical shape with respect to the first direction (Y). Accordingly, in the barrier panel 200 of the stereoscopic image display device according to another embodiment of the present invention, the degree of freedom with respect to the shape of the second common electrode 255 may be improved.

In the stereoscopic image display device according to an embodiment of the present invention, the channel electrodes 240 and the common electrodes 250 of the barrier panel 200 may have a linear shape extending in the first direction (Y). . However, in the barrier panel 200 of the stereoscopic image display device according to another embodiment of the present invention, the shape of the common electrodes 250 extending in the first direction Y is changed in the first direction Y. The shape of the extending channel electrodes 240 may be different. For example, as shown in FIG. 5A , in the stereoscopic image display device according to another embodiment of the present invention, the channel electrodes 240 extending in the first direction Y may have a zigzag shape. . As shown in FIG. 5B , when the channel electrodes 240 of the stereoscopic image display device according to another embodiment of the present invention have a zigzag shape, there is a relationship between the light blocking areas BA and the light transmitting areas TA. Intermediate regions GA in which transmittance is gradually changed may be formed. A user may blur a boundary between the light blocking areas BA and the light transmitting areas TA by the intermediate areas GA. That is, in the stereoscopic image display device according to another embodiment of the present invention, as the channel electrodes 240 extending in the first direction Y have a zigzag shape, the light blocking areas BA and the light transmitting area An afterimage caused by the movement of the TAs may not be recognized by the user. Accordingly, in the stereoscopic image display device according to another embodiment of the present invention, color shift according to the viewing angle can be prevented.

In the stereoscopic image display device according to an embodiment of the present invention, an image provided to a user may be realized by light emitted from the display panel 100 . For example, as shown in FIGS. 6A and 6B , in the stereoscopic image display device according to an embodiment of the present invention, the display panel 100 may include a light emitting device 130 . The light emitting device 130 may emit light having a specific color. For example, the light emitting device 130 may include a first light emitting electrode 131 , a light emitting layer 132 , and a second light emitting electrode 133 sequentially stacked on the display substrate 110 . The display substrate 110 may support the light emitting device 130 . The display substrate 110 may include an insulating material. For example, the display substrate 110 may include glass or plastic.

The first light emitting electrode 131 may include a conductive material. The first light emitting electrode 131 may include a material having a high reflectance. For example, the first light emitting electrode 131 may include a metal such as aluminum (Al) and silver (Ag). The first light emitting electrode 131 may have a multilayer structure. For example, the first light emitting electrode 131 may have a structure in which a reflective electrode formed of a metal is positioned between transparent electrodes formed of a transparent conductive material such as ITO and IZO.

The light emitting layer 132 may generate light having a luminance corresponding to a voltage difference between the first light emitting electrode 131 and the second light emitting electrode 133 . For example, the light emitting layer 132 may be an Emission Material Layer (EML) including a light emitting material. The light emitting material may include an organic material. For example, the display panel 100 of the stereoscopic image display device according to an embodiment of the present invention may be an OLED panel including the emission layer 132 of an organic material. The light emitting layer 132 includes a hole injection layer (HIL), a hole transmitting layer (HTL), an electron transmitting layer (ETL) and an electron injection layer in order to increase light emission efficiency. ; EIL) may further include at least one of.

The second light emitting electrode 133 may include a conductive material. The second light emitting electrode 133 may include a material different from that of the first light emitting electrode 131 . For example, the second light emitting electrode 133 may be a transparent electrode formed of a transparent conductive material such as ITO and IZO. Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, light generated by the light emitting layer 132 of the display panel 100 may be emitted to the outside through the second light emitting electrode 133 .

A driving circuit may be positioned between the display substrate 110 and the light emitting device 130 . The driving circuit may apply a driving current corresponding to a data signal to the light emitting device 130 according to a scan signal. For example, the driving circuit may include at least one thin film transistor 120 . The thin film transistor 120 may include a semiconductor pattern 121 , a gate insulating layer 122 , a gate electrode 123 , an interlayer insulating layer 124 , a source electrode 125 , and a drain electrode 126 .

The semiconductor pattern 121 may be located close to the display substrate 110 . The semiconductor pattern 121 may include a semiconductor material. For example, the semiconductor pattern 121 may include silicon. The semiconductor pattern 121 may be an oxide semiconductor. For example, the semiconductor pattern 121 may include a metal oxide such as IGZO. The semiconductor pattern 121 may include a channel region positioned between the source region and the drain region. The source region and the drain region may have higher electrical conductivity than the channel region.

The gate insulating layer 122 may be positioned on the semiconductor pattern 121 . The gate insulating layer 122 may extend outside the semiconductor pattern 121 . For example, a side surface of the semiconductor pattern 121 may be covered by the gate insulating layer 122 . The gate insulating layer 122 may include an insulating material. For example, the gate insulating layer 122 may include silicon oxide or silicon nitride. The gate insulating layer 122 may include a high-k material. For example, the gate insulating layer 122 may include titanium oxide. The gate insulating layer 122 may have a multilayer structure.

The gate electrode 123 may be positioned on the gate insulating layer 122 . The gate electrode 123 may overlap the channel region of the semiconductor pattern 121 . For example, the channel region of the semiconductor pattern 121 may have electrical conductivity corresponding to a voltage applied to the gate electrode 123 . The gate electrode 123 may be insulated from the semiconductor pattern 121 by the gate insulating layer 122 . The gate electrode 123 may include a conductive material. For example, the gate electrode 123 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), titanium (Ti), molybdenum (Mo), and tungsten (W).

The interlayer insulating layer 124 may be disposed on the gate electrode 123 . The interlayer insulating layer 124 may extend outside the semiconductor pattern 121 . For example, a side surface of the gate electrode 123 may be covered by the interlayer insulating layer 124 . The interlayer insulating layer 124 may include an insulating material. For example, the interlayer insulating layer 124 may include silicon oxide.

The source electrode 125 may be positioned on the interlayer insulating layer 124 . The source electrode 125 may be electrically connected to the source region of the semiconductor pattern 121 . For example, the gate insulating layer 122 and the interlayer insulating layer 124 may include a source contact hole partially exposing the source region of the semiconductor pattern 121 . The source electrode 125 may directly contact the source region of the semiconductor pattern 121 in the source contact hole. The source electrode 125 may include a conductive material. For example, the source electrode 125 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), titanium (Ti), molybdenum (Mo), and tungsten (W). The source electrode 125 may include a material different from that of the gate electrode 123 .

The drain electrode 126 may be disposed on the interlayer insulating layer 1240. The drain electrode 126 may be electrically connected to the drain region of the semiconductor pattern 121. The drain electrode 126 may include It may be spaced apart from the source electrode 125. For example, the gate insulating layer 122 and the interlayer insulating layer 124 include a drain contact hole partially exposing the drain region of the semiconductor pattern 121 . The drain electrode 126 may directly contact the drain region of the semiconductor pattern 121 in the drain contact hole. The drain electrode 126 may include a conductive material. For example, the drain electrode 126 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), titanium (Ti), molybdenum (Mo), and tungsten (W). The electrode 126 may include the same material as the source electrode 125. The drain electrode 126 may include a different material from that of the gate electrode 123.

A buffer layer 111 may be positioned between the display substrate 110 and the driving circuit. The buffer layer 111 may prevent contamination by the display substrate 110 in the process of forming the driving circuit. For example, the buffer layer 111 may be positioned between the display substrate 110 and the semiconductor pattern 121 . The buffer layer 111 may extend outside the semiconductor pattern 121 . For example, the entire surface of the display substrate 110 facing the driving circuit may be covered by the buffer layer 111 . The buffer layer 111 may include an insulating material. For example, the buffer layer 111 may include silicon oxide and/or silicon nitride.

A lower passivation layer 112 may be positioned between the driving circuit and the light emitting device 130 . The lower protective layer 112 may prevent damage to the driving circuit due to external impact and moisture. For example, the lower passivation layer 112 may cover the entire surface of the driving circuit facing the light emitting device 130 . The lower passivation layer 112 may extend outside the source electrode 125 and the drain electrode 126 . The lower passivation layer 112 may include an insulating material. For example, the lower passivation layer 112 may include silicon oxide and/or silicon nitride.

An overcoat layer 113 may be positioned between the lower passivation layer 112 and the light emitting device 130 . The overcoat layer 113 may remove a step difference by the driving circuit. For example, the surface of the overcoat layer 113 facing the device substrate 110 may be a flat surface. The overcoat layer 113 may extend along the lower passivation layer 112 . The overcoat layer 113 may include an insulating material. The overcoat layer 113 may include a material different from that of the lower passivation layer 112 . For example, the overcoat layer 113 may include an organic material.

The light emitting device 130 may be electrically connected to the driving circuit. For example, the lower passivation layer 112 and the overcoat layer 113 may include an electrode contact hole exposing a partial region of the thin film transistor 120 . The driving current generated by the driving circuit may be applied to the first light emitting electrode 131 of the light emitting device 130 . For example, the first light emitting electrode 131 of the light emitting device 130 may directly contact the drain electrode 126 of the thin film transistor 120 in the electrode contact hole.

An encapsulation member 140 may be positioned on the light emitting device 130 . For example, the light emitting device 130 may be positioned between the display substrate 110 and the encapsulation member 140 . The encapsulation member 140 may prevent damage to the light emitting device 130 due to external impact and moisture. The encapsulation member 140 may extend to the outside of the light emitting device 130 . For example, the second light emitting electrode 133 of the light emitting device 130 may be covered by the encapsulation member 140 . Light emitted from the light emitting device 130 may pass through the encapsulation member 140 . In the stereoscopic image display device according to an embodiment of the present invention, the barrier panel 200 may be positioned on a path of light emitted from the display panel 100 . For example, the first barrier substrate 210 of the barrier panel 200 may be positioned on the encapsulation member 140 .

The encapsulation member 140 may have a multi-layer structure. For example, the encapsulation member 140 may include a first encapsulation layer 141 , a second encapsulation layer 142 , and a third sequentially stacked on the second light emitting electrode 133 of the light emitting device 130 . An encapsulation layer 143 may be included. The first encapsulation layer 141 , the second encapsulation layer 142 , and the third encapsulation layer 143 may include an insulating material. The second encapsulation layer 142 may include a material different from that of the first encapsulation layer 141 and the third encapsulation layer 143 . For example, the first encapsulation layer 141 and the third encapsulation layer 143 may include an inorganic material, and the second encapsulation layer 142 may include an organic material. Accordingly, penetration of external moisture can be effectively prevented in the display panel 100 of the stereoscopic image display device according to an embodiment of the present invention. The step caused by the light emitting device 130 may be removed by the second encapsulation layer 142 . For example, the surface of the third encapsulation layer 143 facing the display substrate 110 may be a flat surface.

The display panel 100 may include a plurality of pixel areas. The driving circuit and the light emitting device 130 may be positioned in each pixel area. The light emitting device 130 of each pixel area may be controlled independently of the light emitting device 130 of an adjacent pixel area. For example, the first light emitting electrode 131 of each light emitting device 130 may be spaced apart from the first light emitting electrode 131 of an adjacent light emitting device 130 . A bank insulating layer 114 may be positioned between the adjacent first light emitting electrodes 131 . For example, the bank insulating layer 114 may cover an edge of each of the first light emitting electrodes 131 . The light emitting layer 132 and the second light emitting electrode 133 of each light emitting device 131 may be stacked on a partial region of the corresponding first light emitting electrode 131 exposed by the bank insulating layer 114 . The bank insulating layer 114 may include an insulating material. For example, the bank insulating layer 114 may include an organic material. The bank insulating layer 114 may include a material different from that of the overcoat layer 113 .

The light emitting device 130 of each pixel area may implement a different color from that of the light emitting device 130 of an adjacent pixel area. For example, the light emitting layer 132 of each light emitting device 130 may include a material different from that of the light emitting layer 132 of an adjacent light emitting device 130 . The light emitting layer 132 of each light emitting device 130 may be spaced apart from the light emitting layer 132 of an adjacent light emitting device 130 . For example, the light emitting layer 132 of each light emitting device 130 may include an end positioned on the bank insulating layer 114 .

The same voltage as that of the second light emitting electrode 133 of an adjacent pixel area may be applied to the second light emitting electrode 133 of each pixel area. For example, the second light emitting electrode 133 of each light emitting device 130 may be electrically connected to the second light emitting electrode 133 of an adjacent light emitting device 130 . The second light emitting electrode 133 of each light emitting device 130 may include the same material as the second light emitting electrode 133 of an adjacent light emitting device 130 . The second light emitting electrode 133 of each light emitting device 130 may contact the second light emitting electrode 133 of an adjacent light emitting device 130 . For example, the bank insulating layer 114 may be covered by the second light emitting electrode 133 .

The display panel 100 , the barrier panel 200 , a quarter wave plate (QWP, 710 ), and a first linear polarizing plate 720 may be sequentially stacked. The quarter wave plate (QWP) 710 and the first linear polarizer 720 may prevent external light from being reflected by the display panel 100 . A second linearly polarizing plate 730 may be positioned on a surface of the barrier panel 200 facing the display panel 100 . The transmission axis of the second linear polarizer 730 may be perpendicular to the transmission axis of the first linear polarizer 720 . For example, the barrier panel 200 may be in a normally black mode. The quarter wave plate 70 and the first linear polarizer 720 may be fixed between the display panel 100 and the barrier panel 200 . For example, in the stereoscopic image display device according to an embodiment of the present invention, the quarter wave plate 710 is attached to the encapsulation member 140 of the display panel 100 by a first adhesive layer ADH1 and , the first linear polarizing plate 720 is attached to the quarter wave plate 710 by a second adhesive layer ADH2, and the first barrier substrate 210 of the barrier panel 200 is formed by a third adhesive layer (ADH3) may be attached to the first linear polarizing plate 720. Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, an air gap may not be formed between the display panel 100 and the barrier panel 200 .

The first adhesive layer ADH1 , the second adhesive layer ADH2 , and the third adhesive layer ADH3 may include different materials. For example, the refractive index of the first adhesive layer ADH1 may be different from that of the second adhesive layer ADH2 and/or the refractive index of the third adhesive layer ADH3 . The first adhesive layer ADH1 may have a refractive index between the third encapsulation layer 143 of the display panel 100 and the quarter wave plate 710 . The second adhesive layer ADH2 may have a refractive index between the quarter wave plate 710 and the first linear polarizer 720 . The third adhesive layer ADH3 may have a refractive index between the first linear polarizer 720 and the first barrier substrate 210 of the barrier panel 200 . For example, the refractive index of the first adhesive layer ADH1 is the same as that of the 1/4 wave plate 710 , and the second adhesive layer ADH2 and the third adhesive layer ADH3 have the first linear polarizer 220 . ) may have the same refractive index as Accordingly, in the stereoscopic image display device according to an embodiment of the present invention, loss of light due to a sudden change in refractive index can be prevented.

In the stereoscopic image display device according to the embodiment of the present invention, it is described that the image realized by the display panel 100 passes through the barrier panel 200 and is provided to the user. However, in the stereoscopic image display device according to another embodiment of the present invention, light passing through the barrier panel 200 may be provided to the display panel 100 . For example, as shown in FIG. 7 , in the stereoscopic image display device according to another embodiment of the present invention, the barrier panel 200 and the display panel 100 may be sequentially stacked on the backlight unit 800 . can The backlight unit 800 may provide light to the barrier panel 200 . A first linear polarizing plate 910 is positioned between the backlight unit 800 and the barrier panel 200, and a second linear polarizing plate 920 is positioned between the barrier panel 200 and the display panel 100, , a quarter wave plate 930 and a third linear polarizer 940 may be sequentially stacked on the surface of the display panel 100 facing the barrier panel 200 . For example, the display panel 100 may be a liquid crystal panel including liquid crystal. Accordingly, in the stereoscopic image display device according to another embodiment of the present invention, the degree of freedom with respect to the display panel 100 may be improved.

100: display panel 200: barrier panel
210: first barrier substrate 220: second barrier substrate
230: barrier liquid crystal layer 240: channel electrodes
250: common electrode patterns Vcom: common voltage supply line
GND: ground line

Claims (17)

a display panel that implements an image; and
a barrier panel positioned on the display panel,
The barrier panel includes a first barrier substrate, channel electrodes, a barrier insulating film, first common electrodes, a barrier liquid crystal layer, and a second barrier substrate stacked in order;
the channel electrodes and the first common electrodes extend in a first direction to cross the active area of the barrier panel;
The first common electrodes are spaced apart from each other in a second direction perpendicular to the first direction. The method of claim 1,
A distance between adjacent first common electrodes is smaller than a width of each channel electrode. The method of claim 1,
The barrier panel further includes a common voltage supply line positioned outside the active region;
The first common electrodes are electrically connected to the common voltage supply line. 4. The method of claim 3,
The common voltage supply line has a higher electrical conductivity than the first common electrodes. 4. The method of claim 3,
The common voltage supply line has a closed loop shape extending along the edge of the active region,
Both ends of each of the first common electrodes are connected to the common voltage supply line. 6. The method of claim 5,
The barrier panel further includes source drivers positioned outside the active region and link wires connecting each channel electrode to one of the source drivers;
The link wires are positioned outside the common voltage supply line. The method of claim 1,
The barrier panel further includes at least one second common electrode connecting between adjacent first common electrodes. 8. The method of claim 7,
The second common electrode extends to be inclined in the first direction. 8. The method of claim 7,
The second common electrode intersects at least one first common electrode. The method of claim 1,
A shape of each channel electrode extending in the first direction is a zigzag shape. a first barrier substrate positioned on the display panel;
first channel electrodes positioned side by side on the first barrier substrate;
a channel insulating layer disposed on the first channel electrodes;
second channel electrodes positioned between the first channel electrodes on the channel insulating layer;
a barrier insulating layer disposed on the second channel electrodes;
common electrodes positioned side by side on the barrier insulating layer and spaced apart from each other;
a barrier liquid crystal layer disposed on the common electrodes; and
A second barrier substrate positioned on the barrier liquid crystal layer,
The distance between adjacent second channel electrodes is equal to the width of each second channel electrode,
A distance between adjacent common electrodes is smaller than a distance between adjacent second channel electrodes. 12. The method of claim 11,
A stereoscopic image display device in which a width of each of the first channel electrodes is greater than a width of each of the second channel electrodes. 12. The method of claim 11,
a barrier buffer layer positioned between the first barrier substrate and the first channel electrodes; and
Further comprising a common voltage supply line positioned between the first barrier substrate and the barrier buffer film,
The first barrier substrate includes an active region in which the first channel electrodes, the second channel electrodes, and the common electrodes cross in parallel, and a peripheral region positioned outside the active region;
The common voltage supply line is positioned on the peripheral area. 14. The method of claim 13,
The common voltage supply line has a lower resistance than the first channel electrodes, the second channel electrodes, and the common electrodes. 14. The method of claim 13,
Further comprising link wires positioned between the peripheral region of the first barrier substrate and the barrier buffer layer,
The link wires are spaced apart from the common voltage supply line,
The first channel electrodes and the second channel electrodes are each connected to one of the link wires,
The link wirings have higher electrical conductivity than the first channel electrodes and the second channel electrodes. 16. The method of claim 15,
The link wirings include the same material as the common voltage supply line. 12. The method of claim 11,
A stereoscopic image display device in which a width of each common electrode is smaller than a width of each second channel electrode.

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