TWI509290B - Parallax barrier panel, autostereoscopic display apparatus, and display method thereof - Google Patents

Description

Parallax barrier panel, stereoscopic display using same and display method thereof

The present invention relates to a switchable parallax barrier panel and a stereoscopic display, and more particularly to a switchable parallax barrier panel and a stereoscopic display with adjustable viewing distance.

The stereoscopic display uses Parallel Barrier technology to add a black-and-white grating to the front of the flat display panel. The left and right eyes can see a part of the pixels, while the right eye can see another. A part of the pixels, which in turn produces a stereoscopic image. This grating can be fabricated, for example, from a liquid crystal panel.

A typical liquid crystal panel has a fixed grating width, so that the visible area or the viewing area of the stereoscopic image is also fixed. If the user moves forward or backward to the visible area, he or she may see a stereoscopic image with high crosstalk, or a pseudoscopic or psychoscopic image of the left and right eye images, that is, the viewer's left eye and The right eye directly enters the left and right eye reversal zone, so the viewer is prone to dizziness and discomfort. Such a shortcoming is for a stereoscopic display using a parallax barrier panel. In particular, portable devices such as mobile phones, notebooks or tablets may cause trouble and inconvenience to the user. Therefore, how to adjust the viewing area of the stereoscopic image with the front and rear position of the user is an urgent problem to be solved.

One aspect of the present invention provides a switchable parallax barrier panel that can adjust an viewing area. The parallax barrier panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of first main electrodes, a plurality of first sub-electrodes, a plurality of second main electrodes, and a plurality of second sub-electrodes. The liquid crystal layer is interposed between the first substrate and the second substrate. The first main electrode is interposed between the first substrate and the liquid crystal layer. There is a first pitch P1 between any two adjacent first main electrodes. The first sub-electrode is disposed between the first substrate and the liquid crystal layer and alternately disposed with the first main electrode. The second main electrode is interposed between the second substrate and the liquid crystal layer. There is a second pitch P2 between any two adjacent second main electrodes. The second sub-electrode is interposed between the second substrate and the liquid crystal layer, and is alternately disposed with the second main electrode. The double pitch P2 is greater than the first pitch P1, and the first pitch P1 is greater than the second pitch P2, that is, 2*P2>P1>P2.

In one or more embodiments, the first main electrode has a main width, the first sub-electrode has a sub-width, and the adjacent first main electrode and the first sub-electrode have a pitch width therebetween. The main width is greater than the sub width, and the sub width is greater than the pitch width.

In one or more embodiments, the parallax barrier panel further includes a first main voltage source, a first sub voltage source, a second main voltage source, and a second sub voltage source. The first main voltage source is electrically connected to the first main electrode, and is used for stereoscopic display Providing a first main voltage or a common potential to the first main electrode. The first sub voltage source is electrically connected to the first sub electrode for providing a common potential to the first sub electrode during stereoscopic display. The second main voltage source is electrically connected to the second main electrode for providing a second main voltage or a common potential to the second main electrode during stereoscopic display. The second sub voltage source is electrically connected to the second sub electrode for providing a common potential to the second sub electrode during stereoscopic display.

In one or more embodiments, the parallax barrier panel further includes a controller electrically connected to the first main voltage source and the second main voltage source for controlling the first main voltage source to provide the first main voltage and the second main The voltage source provides a common potential, or controls the first main voltage source to provide a common potential, and the second main voltage source provides a second main voltage.

In one or more embodiments, the parallax barrier panel further includes a switch electrically connected to the first main voltage source, the first sub voltage source, the second main voltage source, and the second sub voltage source for display in a plane. The first main electrode, the first sub-electrode, the second main electrode, and the second sub-electrode have a floating potential.

In one or more embodiments, the first main electrode and the first sub-electrode are coplanarly disposed between the first substrate and the liquid crystal layer, and the second main electrode and the second sub-electrode are coplanarly disposed on the second substrate and the liquid crystal Between the layers.

In one or more embodiments, the parallax barrier panel further includes an insulating layer disposed between the first substrate and the liquid crystal layer. The first main electrode is disposed between the liquid crystal layer and the insulating layer, and the first sub-electrode is disposed between the first substrate and the insulating layer.

In one or more embodiments, the parallax barrier panel further includes an insulating layer disposed between the first substrate and the liquid crystal layer. The first main electrode is disposed between the first substrate and the insulating layer, and the first sub-electrode is disposed between the liquid crystal layer and the insulating layer.

Another aspect of the present invention provides a stereoscopic display including a flat display panel and a parallax barrier panel. The flat display panel has a display surface. The parallax barrier panel is disposed in front of the display surface of the flat display panel. The parallax barrier panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of first main electrodes, a plurality of first sub-electrodes, a plurality of second main electrodes, and a plurality of second sub-electrodes. The liquid crystal layer is interposed between the first substrate and the second substrate. The first main electrode is interposed between the first substrate and the liquid crystal layer. There is a first pitch P1 between any two adjacent first main electrodes. The first sub-electrode is disposed between the first substrate and the liquid crystal layer and alternately disposed with the first main electrode. The second main electrode is interposed between the second substrate and the liquid crystal layer. There is a second pitch P2 between any two adjacent second main electrodes. The second sub-electrode is interposed between the second substrate and the liquid crystal layer, and is alternately disposed with the second main electrode. The double pitch P2 is greater than the first pitch P1, and the first pitch P1 is greater than the second pitch P2, that is, 2*P2>P1>P2.

In one or more embodiments, the flat display panel includes a plurality of pixel units. The pixel units are arranged at least in an array direction. The extending direction of the first main electrode is opposite to the arrangement direction by a first angle θ1, and 0 degrees < θ1 < 90 degrees.

In one or more embodiments, the extending direction of the second main electrode is opposite to the arrangement direction by a second angle θ2, and 0 degrees < θ2 < 90 degrees.

In one or more embodiments, -45 degrees (θ1-θ2) 45 degree.

Another aspect of the present invention provides a display method of a stereoscopic display, comprising: providing a stereoscopic display. The stereoscopic display comprises a flat display panel and a parallax barrier panel. The parallax barrier panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of first main electrodes, a plurality of first sub-electrodes, and a plurality of Two main electrodes and a plurality of second sub-electrodes. The liquid crystal layer is interposed between the first substrate and the second substrate. The first main electrode is interposed between the first substrate and the liquid crystal layer. There is a first pitch P1 between any two adjacent first main electrodes. The first sub-electrode is disposed between the first substrate and the liquid crystal layer and alternately disposed with the first main electrode. The second main electrode is interposed between the second substrate and the liquid crystal layer. There is a second pitch P2 between any two adjacent second main electrodes. The second sub-electrode is interposed between the second substrate and the liquid crystal layer, and is alternately disposed with the second main electrode. 2*P2>P1>P2.

Detects the vertical distance between the viewer and the stereo display.

In the stereoscopic display, if the viewer moves to make the vertical distance fall in the first visible range, the first main voltage is supplied to the first main electrode, and the common potential is supplied to the first sub-electrode, the second main electrode and the second sub-electrode .

In the stereoscopic display, if the viewer moves to make the vertical distance fall in the second visible range, providing the second main voltage to the second main electrode, and providing the common potential to the first main electrode, the first sub-electrode and the second sub-electrode . The first optimal visual distance defined by the first visual range is less than the second optimal visual distance defined by the second visual range.

In one or more embodiments, the display method further includes a floating potential when the first main electrode, the first sub-electrode, the second main electrode, and the second sub-electrode have a planar display.

By applying different signals to the first main electrode and the second main electrode, the switchable parallax barrier panel of the above embodiment can have different viewing areas to reduce the dead angle of the stereoscopic display.

100‧‧‧Flat display panel

102‧‧‧ display surface

110‧‧‧ pixel unit

200‧‧‧parallax grating panel

210‧‧‧First substrate

220‧‧‧second substrate

230‧‧‧Liquid layer

240‧‧‧First main electrode

250‧‧‧First secondary electrode

260‧‧‧second main electrode

270‧‧‧second secondary electrode

280, 290‧‧‧ insulation

310‧‧‧Detector

340‧‧‧First main voltage source

350‧‧‧First secondary voltage source

360‧‧‧second main voltage source

370‧‧‧Second secondary voltage source

380‧‧‧ Controller

AD‧‧‧Arranged direction

D‧‧‧Vertical distance

E1, E2‧‧‧ extending direction

J‧‧ ‧ boundary line

O‧‧‧ viewers

OVD1‧‧‧First best visible distance

OVD2‧‧‧ second best visible distance

P1‧‧‧ first pitch

P2‧‧‧Second pitch

R1‧‧‧ first visible range

R2‧‧‧ second visible range

W1, W4‧‧‧ main width

W2, W5‧‧‧ sub width

W3, W6‧‧‧ spacing width

Θ1‧‧‧ first angle

Θ2‧‧‧second angle

S910, S920, S930, S940, S950, S960‧‧ steps

FIG. 1 is a schematic diagram of a stereoscopic display and a viewer according to an embodiment of the present invention.

Fig. 2 is a perspective view of the parallax barrier panel of Fig. 1.

Fig. 3 is a cross-sectional view of the parallax barrier panel of Fig. 2.

Fig. 4 is a circuit diagram of the parallax barrier panel of Fig. 3.

Fig. 5 is a flow chart showing a display method of a stereoscopic display according to an embodiment of the present invention.

Figure 6 is a diagram showing the relationship between the vertical distance of the viewer and the viewing angle according to an embodiment of the present invention.

Fig. 7 is a cross-sectional view showing another embodiment of the parallax barrier panel of Fig. 1.

Fig. 8 is a cross-sectional view showing still another embodiment of the parallax barrier panel of Fig. 1.

Fig. 9A is a partial top view of the flat display panel of Fig. 1.

9B is a partial top view of the first main electrode and the first sub-electrode of the parallax barrier panel of FIG. 1 in another embodiment.

Fig. 9C is a partial top view of the second main electrode and the second sub-electrode of the parallax barrier panel of Fig. 1 in another embodiment.

The embodiments of the present invention are disclosed in the following drawings, and for the purpose of clarity However, it should be understood that these practical details are not applied to limit this invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

FIG. 1 is a schematic diagram of a stereoscopic display and a viewer O according to an embodiment of the present invention. The stereoscopic display includes a flat display panel 100 and a parallax barrier panel 200. The flat display panel 100 has a display surface 102. The parallax barrier panel 200 is disposed in front of the display surface 102 of the flat display panel 100. For the sake of clarity, the stereoscopic display of FIG. 1 is shown in an exploded view.

Specifically, the flat display panel 100 may include a plurality of pixel units 110. The flat display panel 100 displays the left eye image and the right eye image on the display surface 102 by the pixel units 110. Through the switchable parallax barrier panel 200, the left eye of the viewer O can see the left eye image, and the right eye can see the right eye image, so the viewer O can experience the stereoscopic image.

Next, please refer to FIG. 2 and FIG. 3 together. FIG. 2 is a perspective view of the parallax barrier panel 200 of FIG. 1 and FIG. 3 is a cross-sectional view of the parallax barrier panel 200 of FIG. The parallax barrier panel 200 includes a first substrate 210, a second substrate 220, a liquid crystal layer 230, a plurality of first main electrodes 240, a plurality of first sub-electrodes 250, a plurality of second main electrodes 260, and a plurality of second sub-electrodes 270 . The liquid crystal layer 230 is disposed between the first substrate 210 and the second substrate 220. The first main electrode 240 is disposed between the first substrate 210 and the liquid crystal layer 230. There is a first pitch P1 between any two adjacent first main electrodes 240. The first sub-electrode 250 is disposed between the first substrate 210 and the liquid crystal layer 230 and alternately disposed with the first main electrode 240. The second main electrode 260 is placed on the second base The board 220 is between the liquid crystal layer 230 and the liquid crystal layer 230. There is a second pitch P2 between any two adjacent second main electrodes 260. The second sub-electrode 270 is disposed between the second substrate 220 and the liquid crystal layer 230 and alternately disposed with the second main electrode 260. Wherein the second pitch P2 is greater than the first pitch P1, and the first pitch P1 is greater than the second pitch P2, that is, 2*P2>P1>P2.

In short, by applying different signals to the first main electrode 240 and the second main electrode 260, the switchable parallax barrier panel 200 of the present embodiment can adjust different viewing areas to reduce the dead angle of the stereoscopic display. Specifically, the parallax barrier panel 200 may select one of the first main electrode 240 and the second main electrode 260 as a parallax barrier electrode. Since 2*P2>P1>P2, that is, the first pitch P1 is different from the second pitch P2, and the different pitches correspond to different viewing regions, the first main electrode 240 and the second main body are selected. One of the electrodes 260 is a parallax barrier electrode, and the parallax barrier panel 200 can have different viewing areas, so that the viewing area can be adjusted for the user's position, and the dead angle of the stereoscopic display can be reduced.

Please refer to Figure 3 below. In the present embodiment, the first main electrode 240 has a main width W1, the first sub-electrode 250 has a sub-width W2, and the adjacent first main electrode 240 and the first sub-electrode 250 have a pitch width W3. The main width W1 is greater than the sub-width W2, and the sub-width W2 is greater than the pitch width W3. The first main electrode 240 may be selected as a parallax barrier electrode, and the first sub-electrode 250 is an electrode that assists in providing a common potential to make the electric field distribution in the liquid crystal layer 230 more uniform. The two adjacent first main electrodes 240 and the first sub-electrodes 250 are electrically separated from each other by a gap width W3. In addition, similarly, the second main electrode 260 has a main width W4, The second sub-electrode 270 has a sub-width W5, and the adjacent second main electrode 260 and the second sub-electrode 270 have a pitch width W6. The main width W4 is greater than the sub-width W5, and the sub-width W5 is greater than the pitch width W6.

Next, please refer to FIG. 4, which is a circuit diagram of the parallax barrier panel 200 of FIG. In detail, the parallax barrier panel 200 further includes a first main voltage source 340, a first sub voltage source 350, a second main voltage source 360, and a second sub voltage source 370. The first main voltage source 340 is electrically connected to the first main electrode 240 for providing a first main voltage or a common potential to the first main electrode 240 during stereoscopic display. The first sub voltage source 350 is electrically connected to the first sub-electrode 250 for providing a common potential to the first sub-electrode 250 during stereoscopic display. The second main voltage source 360 is electrically connected to the second main electrode 260 for providing a second main voltage or a common potential to the second main electrode 260 during stereoscopic display. The second sub voltage source 370 is electrically connected to the second sub-electrode 270 for providing a common potential to the second sub-electrode 270 during stereoscopic display. The first main voltage and the second main voltage are different from the common potential.

In addition, in the present embodiment, the parallax barrier panel 200 may further include a controller 380 electrically connected to the first main voltage source 340 and the second main voltage source 360 for controlling the first main voltage source 340 to provide the first main voltage. And the second main voltage source 360 provides a common potential, or controls the first main voltage source 340 to provide a common potential, and the second main voltage source 360 provides a second main voltage. Therefore, when the first main voltage source 340 supplies the first main voltage to the first main electrode 240 and the second main voltage source 360 provides the common potential to the second main electrode 260, the first main electrode 240 is the parallax barrier panel 200 a parallax barrier electrode; and when the first main voltage source 340 provides a common potential to the first main electrode 240, and when the second main voltage source 360 supplies the second main voltage to the second main electrode 260, the second main electrode 260 is a parallax barrier electrode of the parallax barrier panel 200.

Next, the display method of the stereoscopic display will be further described. Please refer to FIG. 4 to FIG. 6 together. FIG. 5 is a flowchart of a display method of a stereoscopic display according to an embodiment of the present invention, and FIG. 6 is a vertical distance D of a viewer O according to an embodiment of the present invention. The viewing angle relationship diagram, wherein the vertical distance D is the vertical distance between the stereoscopic display and the viewer O. The vertical distance D can be detected by the position detector 310, which is well known to those skilled in the art, and therefore will not be described again. In detail, in operation, as shown in step S910, a stereoscopic display may be provided first, for example, the stereoscopic display of FIG. Then, as shown in step S920, the stereoscopic display can be switched to a planar image or a stereoscopic image. The stereoscopic display can first determine whether it is a stereoscopic display or a flat display. For example, the stereoscopic display can be switched to a stereoscopic display or a flat display according to an instruction input by the viewer O. However, the invention is not limited thereto. If it is determined to be a stereoscopic display, the process proceeds to step S930, and the vertical distance D between the viewer O and the stereoscopic display can be detected. For example, as shown in FIG. 4, the stereoscopic display may further include a detector 310 electrically connected to the controller 380. The detector 310 may be disposed in the stereoscopic display or outside the stereoscopic display. The detector 310 can be an eyeball detection system, a face recognition module, or other device capable of detecting the position of the left and right eyes of the viewer O. The present invention is not limited thereto, and is well known to those skilled in the art. No longer.

Then, as shown in step S940, when the stereoscopic display is performed, if the result of the detection is that the viewer O moves, the vertical distance D falls within the first visible range. R1 (indicated by the dot area indicated by the arrow in FIG. 6), provides a first main voltage to the first main electrode 240, and provides a common potential to the first sub-electrode 250, the second main electrode 260 and the second sub-electrode Electrode 270. In the fourth diagram, the detector 310 can transmit the detection result to the controller 380, so that the controller 380 controls the first main voltage source 340 and the second main voltage source 360, that is, the first main voltage source 340 provides The first main voltage is to the first main electrode 240, and the second main voltage source 360 provides a common potential to the second main electrode 260. Additionally, the first secondary voltage source 350 provides a common potential to the first secondary electrode 250, and the second secondary voltage source 370 provides a common potential to the second secondary electrode 270. Referring to FIG. 3, a portion of the liquid crystal layer 230 corresponding to the first main electrode 240 forms a light-shielding region, and a portion of the liquid crystal layer 230 corresponding to the first sub-electrode 250 forms a light-transmitting region, so that the parallax barrier panel 200 is produced. The parallax barrier of the first pitch P1.

Then return to Figures 4 through 6. In addition, as shown in step S950, if the result of the detection is that the viewer O moves so that the vertical distance D falls within the second visible range R2 (indicated by the dot area indicated by the arrow in FIG. 6), the second master is provided. Voltage to the second main electrode 260, and providing a common potential to the first main electrode 240, the first sub-electrode 250 and the second sub-electrode 270, wherein the first optimal visual distance OVD1 defined by the first visible range R1 is smaller than the second The second optimal visual distance OVD2 defined by the visual range R2, that is, the first visual range R1 is closer to the stereoscopic display than the second visible range R2, and the first optimal visual distance OVD1 is smaller than the second optimal visual distance OVD2. In the fourth diagram, the detector 310 can transmit the detection result to the controller 380, so the controller 380 controls the first main voltage source 340 to provide the common potential to the first main electrode 240, and controls the second main voltage source. 360 provides a second main voltage to the second Main electrode 260. Additionally, the first secondary voltage source 350 provides a common potential to the first secondary electrode 250, and the second secondary voltage source 370 provides a common potential to the second secondary electrode 270. Referring to FIG. 3, a portion of the liquid crystal layer 230 corresponding to the second main electrode 260 forms a light-shielding region, and a portion of the liquid crystal layer 230 corresponding to the second sub-electrode 270 forms a light-transmitting region, so that the parallax barrier panel 200 is produced. The second pitch is a parallax barrier of P2. Therefore, the stereoscopic display can select the first main electrode 240 or the second main electrode 260 as the parallax barrier electrode according to the position of the viewer O, so that the viewer O can experience the stereoscopic image.

Please refer to Figures 3 and 6. In an embodiment, when the first main electrode 240 is regarded as a parallax barrier electrode, the parallax barrier panel 200 has a first visible range R1, the first visible range R1 has a first optimal visible distance OVD1; and the second main electrode When the 260 is used as the parallax barrier electrode, the parallax barrier panel 200 has a second visible range R2, and the second visible range R2 has a second optimal visible distance OVD2, wherein the first visible range R1 and the second visible range R2 are, for example, viewers. The crosstalk area between the two eyes of O may be less than 5% of the area. A boundary line J is formed between the first visible range R1 and the second visible range R2, and the boundary line J may be a line formed by a boundary point between the first visible range R1 and the dotted line of the second visible range R2. In addition, as described above, since 2*P2>P1>P2, that is, the first visible range R1 and the second visible range R2 have a boundary line J, and the first visible range R1 and the second visible range R2 are spatially continuous. range.

Please refer to Figure 4 and Figure 5 together. In one or more embodiments, the stereoscopic display may have a flat display function. Specifically, the parallax barrier panel 200 may further include a switch 390 electrically connected to the first main power The voltage source 340, the first secondary voltage source 350, the second primary voltage source 360, and the second secondary voltage source 370. When the switch 390 is used for planar display, the first main electrode 240, the first sub-electrode 250, the second main electrode 260, and the second sub-electrode 270 have a floating potential, for example, the first main voltage source 340 and the first sub-voltage. The source 350, the second main voltage source 360 and the second sub voltage source 370 do not provide any signals to the first main electrode 240, the first sub-electrode 250, the second main electrode 260 and the second sub-electrode 270. Therefore, when the stereoscopic display determines that the current display is flat, the step S960 is performed to allow the first main electrode 240, the first sub-electrode 250, the second main electrode 260, and the second sub-electrode 270 to have a floating potential. That is to say, in the planar display, the liquid crystal molecules of the liquid crystal layer 230 (as shown in FIG. 3) are all in an undriven state, so the liquid crystal layer 230 is transparent, so that the plane of FIG. 1 is displayed. The planar image of the panel 100 can pass through the see-through difference grating panel 200, so that the viewer O of FIG. 1 can see the planar image. In this way, the stereoscopic display can be provided with a planar/stereoscopic image switching function via the switch 390.

Then go back to Figure 3. In this embodiment, the first main electrode 240 and the first sub-electrode 250 are coplanarly disposed between the first substrate 210 and the liquid crystal layer 230, and the second main electrode 260 and the second sub-electrode 270 are coplanarly disposed in the second The substrate 220 is between the liquid crystal layer 230 and the liquid crystal layer 230. That is, the first main electrode 240 and the first sub-electrode 250 may be formed by the same process. For example, a transparent conductive layer may be formed on the first substrate 210, and then the transparent conductive layer may be patterned to form the first main electrode 240 and the first sub-electrode 250 together. In addition, the second main electrode 260 and the second sub-electrode 270 may also be formed by the same process, and the details thereof will not be described again.

However, the setting of the parallax barrier panel 200 is not limited to the third diagram. Next, please refer to Fig. 7, which is a cross-sectional view showing another embodiment of the parallax barrier panel 200 of Fig. 1. The difference between this embodiment and the embodiment of FIG. 3 lies in the arrangement of the first main electrode 240, the first sub-electrode 250, the second main electrode 260 and the second sub-electrode 270, and the arrangement of the insulating layers 280 and 290. In the present embodiment, the parallax barrier panel 200 may further include an insulating layer 280 disposed between the first substrate 210 and the liquid crystal layer 230. The first main electrode 240 is disposed between the liquid crystal layer 230 and the insulating layer 280, and the first sub-electrode 250 is disposed between the first substrate 210 and the insulating layer 280, that is, the first main electrode 240 and the first sub-electrode 250 Formed by different processes. For example, a transparent conductive layer may be formed on the first substrate 210, and then the transparent conductive layer may be patterned to form the first secondary electrode 250. The insulating layer 280 and another transparent conductive layer are sequentially formed to cover the first substrate 210 and the first main electrode 240. The transparent conductive layer is then patterned to form a first main electrode 240.

In addition, the parallax barrier panel 200 may further include an insulating layer 290 disposed between the second substrate 220 and the liquid crystal layer 230. The second main electrode 260 is disposed between the liquid crystal layer 230 and the insulating layer 290, and the second sub-electrode 270 is disposed between the second substrate 220 and the insulating layer 290, and is formed in the same manner as the first main electrode 240, The insulating layer 280 is the same as the first sub-electrode 250. Other details of the present embodiment are the same as those of the embodiment of Fig. 3, and therefore will not be described again.

Next, please refer to Fig. 8, which is a cross-sectional view showing still another embodiment of the parallax barrier panel 200 of Fig. 1. The difference between this embodiment and the embodiment of FIG. 7 lies in the first main electrode 240, the first sub-electrode 250, and the second main The manner in which the electrode 260 and the second sub-electrode 270 are disposed. In the present embodiment, the first sub-electrode 250 is disposed between the liquid crystal layer 230 and the insulating layer 280 , and the first main electrode 240 is disposed between the first substrate 210 and the insulating layer 280 . In addition, the second sub-electrode 270 is disposed between the liquid crystal layer 230 and the insulating layer 290, and the second main electrode 260 is disposed between the second substrate 220 and the insulating layer 290. Other details of the present embodiment are the same as those of the embodiment of Fig. 7, and therefore will not be described again.

Referring to FIG. 9A to FIG. 9C , FIG. 9A is a partial top view of the flat display panel 100 of FIG. 1 , and FIG. 9B is a first main electrode 240 and the first of the parallax barrier panel 200 of FIG. 1 . The secondary electrode 250 is a partial top view of another embodiment, and FIG. 9C is a partial top view of the second main electrode 260 and the second secondary electrode 270 of the parallax barrier panel 200 of FIG. 1 in another embodiment. In the present embodiment, the pixel units 110 are arranged at least in the arrangement direction AD. The extending direction E1 of the first main electrode 240 is sandwiched by the first angle θ1 from the array direction AD, and 0 degrees < θ1 < 90 degrees. That is to say, the extending direction E1 is neither parallel nor orthogonal to the arrangement direction AD. In this way, the Moire Effect between the flat display panel 100 and the parallax barrier panel 200 (as shown in FIG. 1) can be reduced, and the cloud pattern can be prevented from being generated during display.

On the other hand, in one or more embodiments, the extending direction E2 of the second main electrode 260 and the arrangement direction AD may be sandwiched by the second angle θ2, and 0 degrees < θ2 < 90 degrees. That is to say, the extending direction E2 is neither parallel nor orthogonal to the arrangement direction AD. This arrangement also reduces the Murray effect between the flat display panel 100 and the parallax barrier panel 200 (as depicted in Figure 1).

In one or more embodiments, the first angle θ1 and the second angle θ2 may have the same or different values. For example, in Fig. 9B, the first included angle θ1 has a negative angle with respect to the arrangement direction AD, and in the 9Cth view, the second included angle θ2 has a positive angle. Basically, as long as the first angle θ1 and the second angle θ2 meet the condition: -45 degrees (θ1-θ2) 45 degrees are all within the scope of the present invention.

The invention provides a parallax barrier panel and a stereoscopic display capable of generating different viewing areas to reduce the dead angle of the stereoscopic display. The present invention provides a parallax barrier panel in which one of the first main electrode and the second main electrode can be selected as a parallax barrier electrode. The first pitch P1 and the second pitch of the first main electrode and the second main electrode have the following relationship 2*P2>P1>P2, and the different pitches P1 and P2 correspond to different viewing regions, by applying The different parallax signals to the first main electrode and the second main electrode, the parallax barrier panel of the above embodiment can have different viewing areas, and can be adjusted according to the position of the user to reduce the dead angle of the stereoscopic display.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

200‧‧‧parallax grating panel

210‧‧‧First substrate

220‧‧‧second substrate

230‧‧‧Liquid layer

240‧‧‧First main electrode

250‧‧‧First secondary electrode

260‧‧‧second main electrode

270‧‧‧second secondary electrode

P1‧‧‧ first pitch

P2‧‧‧Second pitch

W1, W4‧‧‧ main width

W2, W5‧‧‧ sub width

W3, W6‧‧‧ spacing width

Claims (14)

A parallax barrier panel comprising: a first substrate and a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a plurality of first main electrodes disposed on the first substrate and the Between the liquid crystal layers, any two adjacent first main electrodes have a first pitch P1 therebetween, and each of the first main electrodes has a first main width; a plurality of first sub-electrodes, And disposed between the first substrate and the liquid crystal layer, and alternately disposed with the first main electrodes, wherein each of the first sub-electrodes has a first sub-width, the first main width is greater than the first sub- Width; a plurality of second main electrodes disposed between the second substrate and the liquid crystal layer, wherein any two adjacent second main electrodes have a second pitch P2 between each of the two The two main electrodes have a second main width; and a plurality of second sub-electrodes are disposed between the second substrate and the liquid crystal layer, and are alternately disposed with the second main electrodes, wherein each of the first sub-pairs The electrode has a second sub-width, the second main width is greater than the second sub-width, and 2*P2>P1>P2 The parallax barrier panel of claim 1, wherein the two adjacent first main electrodes and the first sub-electrode have a pitch width, and the first sub-width is greater than the pitch width. The parallax barrier panel of claim 1, further comprising: a first main voltage source electrically connected to the first main electrodes for Providing a first main voltage or a common potential to the first main electrodes during stereoscopic display; a first sub-voltage source electrically connecting the first sub-electrodes for providing the common potential to the stereo display a first main electrode; a second main voltage source electrically connected to the second main electrodes for providing a second main voltage or the common potential to the second main electrodes during stereoscopic display; The two secondary voltage sources are electrically connected to the second secondary electrodes for providing the common potential to the second secondary electrodes during stereoscopic display. The parallax barrier panel of claim 3, further comprising: a controller electrically connected to the first main voltage source and the second main voltage source for controlling the first main voltage source to provide the first main voltage And the second main voltage source provides the common potential, or controls the first main voltage source to provide the common potential, and the second main voltage source provides the second main voltage. The parallax barrier panel of claim 3, further comprising: a switch electrically connected to the first main voltage source, the first sub voltage source, the second main voltage source and the second sub voltage source, For the planar display, the first main electrodes, the first sub-electrodes, the second main electrodes, and the second sub-electrodes have floating potentials. The parallax barrier panel of claim 1, wherein the first main electrodes and the first sub-electrodes are coplanarly disposed on the first substrate and the liquid crystal layer And the second main electrodes and the second sub-electrodes are coplanarly disposed between the second substrate and the liquid crystal layer. The parallax barrier panel of claim 1, further comprising: an insulating layer disposed between the first substrate and the liquid crystal layer, wherein the first main electrodes are disposed between the liquid crystal layer and the insulating layer, and The first sub-electrodes are disposed between the first substrate and the insulating layer. The parallax barrier panel of claim 1, further comprising: an insulating layer disposed between the first substrate and the liquid crystal layer, wherein the first main electrodes are disposed between the first substrate and the insulating layer, And the first sub-electrodes are disposed between the liquid crystal layer and the insulating layer. A stereoscopic display, comprising: a flat display panel having a display surface; and a parallax barrier panel disposed on the display surface of the flat display panel, the parallax barrier panel comprising: a first substrate and a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a plurality of first main electrodes disposed between the first substrate and the liquid crystal layer, wherein any two adjacent first main electrodes Having a first pitch P1 therebetween, and each of the first main electrodes has a first main width; a plurality of first sub-electrodes are disposed between the first substrate and the liquid crystal layer, and The first main electrodes are alternately arranged, each of which is somewhat The first sub-electrode has a first sub-width, the first main width is greater than the first sub-width; a plurality of second main electrodes are disposed between the second substrate and the liquid crystal layer, wherein any two of the adjacent Between the second main electrodes, a second pitch P2, and each of the second main electrodes has a second main width; and a plurality of second sub-electrodes disposed on the second substrate and the liquid crystal layer And alternately disposed with the second main electrodes, wherein each of the first sub-electrodes has a second sub-width, the second main width is greater than the second sub-width, and 2*P2>P1>P2. The stereoscopic display device of claim 9, wherein the flat display panel comprises a plurality of pixel units, the pixel units are arranged at least along an arrangement direction, and the extending directions of the first main electrodes are aligned with the arrangement direction. The first angle θ1 and 0 degrees < θ1 < 90 degrees. The stereoscopic display of claim 10, wherein the extending direction of the second main electrodes is opposite to the arrangement direction by a second angle θ2, and 0 degrees < θ2 < 90 degrees. A stereoscopic display as claimed in claim 11, wherein -45 degrees (θ1-θ2) 45 degree. A display method for a stereoscopic display, comprising: A stereoscopic display includes a flat display panel and a parallax barrier panel, the parallax barrier panel includes: a first substrate and a second substrate; a liquid crystal layer disposed on the first substrate and the second substrate a plurality of first main electrodes disposed between the first substrate and the liquid crystal layer, wherein any two adjacent first main electrodes have a first pitch P1 therebetween, and each of the plurality The first main electrode has a first main width; a plurality of first sub-electrodes are disposed between the first substrate and the liquid crystal layer, and are alternately disposed with the first main electrodes, wherein each of the first sub-pairs The electrode has a first sub-width, the first main width is greater than the first sub-width; a plurality of second main electrodes are disposed between the second substrate and the liquid crystal layer, wherein the two adjacent to the second A second pitch P2 is formed between the main electrodes, and each of the second main electrodes has a second main width; a plurality of second sub-electrodes are disposed between the second substrate and the liquid crystal layer, and The second main electrodes are alternately arranged, wherein each of the first sub-electrodes Having a second sub-width, the second main width is greater than the second sub-width, and 2*P2>P1>P2; detecting a vertical distance between a viewer and a stereoscopic display; The viewer moves the vertical distance to a first visible range, providing a first main voltage to the first main electrodes, and providing a common potential to the first sub-electrodes and the second main electrodes And the second secondary electrodes; and in the stereoscopic display, if the viewer moves to cause the vertical distance to fall Providing a second main voltage to the second main electrodes, and providing the common potential to the first main electrodes, the first sub-electrodes and the second sub-electrodes, wherein the first A first optimal visual distance defined by a visual range is less than a second optimal visual distance defined by the second visual range. The display method of claim 13, further comprising: causing the first main electrode, the first sub-electrodes, the second main electrodes, and the second sub-electrodes to have a floating potential during planar display .