TW201316100A - Auto stereoscopic display panel - Google Patents

Abstract

An auto stereoscopic display panel including a display panel, a switching cell and a lenticular lens array is provided. The display panel provides an image. The switching cell is disposed on a transmission path of the image. The switching cell includes a first substrate, a second substrate, a plurality of spacers disposed between the first substrate and the second substrate and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate has a first dielectric layer and at least one first conductive pattern. The first dielectric layer has a plurality of first opening. The first conductive pattern conformally covers the first dielectric layer. The second substrate has at least one second conductive pattern. A part of the spacers disposed in the first openings do not contact the second substrate. A part of the spacers which are not disposed in the first openings contact the second substrate. The switching cell is disposed between the lenticular lens array and the display panel.

Description

Naked eye stereo display panel

The present invention relates to a stereoscopic display panel, and more particularly to a naked-eye stereoscopic display panel.

In the current display technology, the stereoscopic display technology can be roughly divided into a stereoscopic view in which a viewer wears special design glasses and an auto-stereoscopic view that is directly viewed by the naked eye. Among them, the glasses-type stereo display technology has been developed and widely used in certain special applications such as military simulation or large-scale entertainment. However, wearing glasses stereoscopic display technology is not easy to popularize due to its convenience and poor comfort. Therefore, the naked-eye stereoscopic display technology has gradually developed and become a new trend.

A conventional naked-eye stereoscopic display panel includes a display panel that provides an image, a switching panel disposed on the image transmission path, and a lenticular lens array between the cylindrical lens array and the display panel. In order to reduce the manufacturing process and manufacturing cost of the switching panel of the naked-eye stereoscopic display panel, in the conventional switching panel, a ball spacer is often used as a tool for supporting the cell gap of the switching panel. However, when the designer wants to increase the local pressure of the switching panel by increasing the density of the spherical spacers in the switching panel, the LC margin of the switching panel is narrowed. Further, the manufacturing yield of the naked-eye stereoscopic display panel is affected. In order to solve the problem described in the above paragraph, a plurality of spherical spacers of different particle sizes are arranged in the switching panel. The spherical spacers with large particle diameter are used as the main support for the liquid crystal gap, and the spherical spacers with small particle diameter serve as the auxiliary force for supporting the liquid crystal gap, so that the switching panel has both high withstand voltage and wide liquid crystal. The allowable range of the drop amount. However, since the spherical gaps of two different particle sizes are mixed, the procurement cost is high. In addition, the uniformity of the spherical spacers sprinkled on the substrate of the switching panel is not easily controlled, and the problem of uneven liquid crystal gap is apt to occur.

The invention provides a naked eye stereoscopic display panel, which comprises a switching panel. The switching panel has a uniform liquid crystal gap and has a high local pressure and a wide liquid crystal insufficiency (LC margin).

The invention provides a naked eye stereoscopic display panel, which comprises a display panel, a switching panel and a cylindrical lens array. The display panel provides images. The switch panel is disposed on the transmission path of the image. The switching panel includes a first substrate, a second substrate, a plurality of spacers distributed between the first substrate and the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate has a first dielectric layer and at least one first conductive pattern. The first dielectric layer has a plurality of first openings. The first conductive pattern conformally covers the first dielectric layer. The second substrate has at least one second conductive pattern. A portion of the spacer located within the first opening is not in contact with the second substrate. A portion of the spacer located outside the first opening is in contact with the second substrate. The cylindrical lens array is disposed on the transmission path of the image. The switching panel is located between the cylindrical lens array and the display panel.

Based on the above, in the naked-eye stereoscopic display panel of the present invention, the switching panel has a portion of the spacer located outside the first opening as a main support for the liquid crystal gap, and a portion of the spacer located in the first opening serves as an auxiliary supporting liquid crystal gap. power. In this way, if the switching panel is subjected to an external force, when a portion of the spacer located on the first dielectric layer is compressed, a portion of the spacer located in the first opening can contact the second substrate to form an auxiliary for supporting the liquid crystal gap. The force, in turn, makes the switch panel highly resistant to pressure. The switch panel has high pressure resistance and also has a wide liquid crystal drop tolerance range.

In addition, the switching panel of the present invention is a portion of the spacer outside the first opening as a main force for supporting the liquid crystal gap. Therefore, if the position of the first dielectric layer in the switching panel can be appropriately designed and realized, the problem of uneven liquid crystal gap in the prior art can be improved.

The above described features and advantages of the present invention will be more apparent from the following description.

The autostereoscopic display panel of the present invention includes a switching cell. In the naked-eye stereoscopic display panel of the present invention, the switching panel functions to switch the naked-eye stereoscopic display panel between the two-dimensional display mode (2D mode) and the three-dimensional display mode (3D mode). The working principle of the switching panel according to an embodiment of the present invention will be described below. Next, a plurality of embodiments are used to illustrate why the switching panel in the naked-eye stereoscopic display panel according to an embodiment of the present invention can simultaneously have a high local pressure, a wide liquid crystal instillation tolerance (LC margin), and Good cell gap uniformity.

1 is a cross-sectional view showing a naked-eye stereoscopic display panel according to an embodiment of the present invention. The auto-stereoscopic display panel 100 of the present embodiment includes a display panel 110 that can provide an image, a cylindrical lens array 120 disposed on the image transmission path, and is disposed on the image transmission path and located on the display panel 110 and the cylindrical lens array 120. Switch panel 130 between. The display panel 110 of this embodiment is, for example, a liquid crystal display panel. The display panel 110 can also be an organic electro-luminescent display panel, a plasma display panel, or other suitable display panel. .

Hereinafter, the role of the switching panel in the naked-eye stereoscopic display panel according to an embodiment of the present invention will be briefly described with reference to FIG. Referring to FIG. 1 , the display panel 110 emits an image having a first polarization direction. After the image is passed through the switching panel 130 in an open state, the polarization direction thereof can maintain the first polarization direction, so that the cylindrical lens array 120 does not image the image. Has the function of a lens. In this way, after the image passes through the cylindrical lens array 120, the traveling direction thereof hardly changes, and the naked-eye stereoscopic display panel 100 is placed in the two-dimensional display mode. On the other hand, when the image passes through the switching panel 130 in the off state, its polarization direction changes, so that the cylindrical lens array 120 has a lens function for the image. In this way, the direction of travel of the image after passing through the cylindrical lens array 120 is changed, and the naked-eye stereoscopic display panel 100 is placed in the three-dimensional display mode. As for the switching panel 130 in the on state, the polarization direction can maintain the first polarization direction, or the switching panel 130 in the off state can maintain the first polarization direction, which can be determined by the designer.

1 is a schematic diagram illustrating the structure of a naked-eye stereoscopic display panel according to an embodiment of the present invention and the role of the switching panel in the naked-eye stereoscopic display panel. Hereinafter, various embodiments will be listed to illustrate the present invention. The switch panel can simultaneously have high pressure resistance, wide liquid crystal drop tolerance range, and good liquid crystal gap uniformity.

[First Embodiment]

2 is a cross-sectional view showing a switch panel according to a first embodiment of the present invention. Referring to FIG. 1 and FIG. 2 simultaneously, the switching panel 130 of the embodiment is disposed on the transmission path of the image emitted by the display panel 110. The switching panel 130 includes a first substrate 132, a second substrate 134, a liquid crystal layer 136, and a plurality of spacers 138.

Referring to FIG. 2, the first substrate 132 of the embodiment has a first substrate 132a, a first dielectric layer 132b, and a first conductive pattern 132c. The first dielectric layer 132b is disposed on the first substrate 132a and has a plurality of first openings H1. The first opening H1 of this embodiment may be a through hole (that is, the first dielectric layer 132b and exposing the first substrate 132a) or a recess (that is, the first dielectric layer 132b does not expose the first substrate 132a). The first conductive pattern 132c is conformally covered on the first dielectric layer 132b. In other words, the first conductive pattern 132c does not fill the first opening H1 in the first dielectric layer 132b. The first conductive pattern 132c may be laid along the first dielectric layer 132b and the first opening H1 to exhibit a high and low undulation.

Referring to FIG. 3, the second substrate 134 of the embodiment has a second substrate 134a and a second conductive pattern 134b. In this embodiment, the second conductive pattern 134b can be directly laid on the second substrate 134a to assume a flat condition. As shown in FIG. 1 , the first substrate 132 of the embodiment may be located between the second substrate 134 and the display panel 110 . However, the present invention is not limited thereto. In other embodiments, the first substrate 132 may also be located between the second substrate 134 and the cylindrical lens array 120. In other words, in the autostereoscopic display panel of the present invention, it is not limited that the substrate having a significant difference is disposed on the side close to or away from the display panel 110, and it is not limited that only one substrate may have a significant difference. The switching panel 130 of the present embodiment is configured to pass the image emitted by the display panel 110, thereby controlling the auto-stereoscopic display panel 100 to be in a two-dimensional display mode or a three-dimensional display mode. Therefore, the material selected for the switching panel 130 is preferably a material having high light transmittance. For example, the material of the first substrate 132 and the second substrate 134 may be glass or plastic, and the material of the first conductive pattern 132c and the second conductive pattern 134b may be indium tin oxide (ITO), and the first dielectric layer The material of 132b may be tantalum nitride (SiN), but the invention is not limited to the above.

The liquid crystal layer 136 of this embodiment is disposed between the first substrate 132 and the second substrate 134. In the present embodiment, the liquid crystal layer 136 may be a twisted nematic (TN) type liquid crystal having a lower material cost. However, the present invention is not limited thereto. In other embodiments, the liquid crystal layer 132 may also be a vertical alignment (VA) type liquid crystal or other suitable type of liquid crystal.

The spacers 138 of this embodiment are distributed between the first substrate 132 and the second substrate 134. It should be noted that a portion of the spacers 138 located in the first opening H1 are not in contact with the second substrate 134, and a portion of the spacers 138 located outside the first opening H1 are in contact with the second substrate 134. In particular, the spacers 138 of the present embodiment can have substantially the same dimensions. After the spacer 138 is sprinkled on the first substrate 132, a portion of the spacer 138 is disposed on the protrusion of the first substrate 132 (ie, corresponding to the position of the first dielectric layer 132b, excluding the first An opening H1) is in contact with the second substrate 134 by the first dielectric layer 132b under the spacer 138 and the first conductive pattern 132c. On the other hand, part of the spacers 138 are disposed in the recesses of the first substrate 132 (ie, corresponding to the positions where the first openings H1 are located) and cannot be in contact with the second substrate 134.

It should be noted that when the switching panel 130 is not stressed, the spacer 138 disposed at the protrusion of the first substrate 132 contacts the second substrate 134 to form a support together with the first dielectric layer 132b and the first conductive pattern 132c. The main force of the cell gap of the panel 130 is switched, and the place where the first dielectric layer 132b is located (excluding the first opening H1) may be referred to as a main spacer area M. On the other hand, when the switching panel 130 is not stressed, the spacer 138 disposed at the recess of the first substrate 132 (ie, corresponding to the position of the first opening H1) is not in contact with the second substrate 134, and the first Where the opening H1 is located may be referred to as a sub spacer area S. However, when the switching panel 130 is stressed, the spacers 138 disposed at the protrusions of the first substrate 132 are compressed, and the spacers 138 disposed at the recesses of the first substrate 132 are brought into contact with the second substrate 134. At this time, the spacer 138 disposed at the recess of the first substrate 132 cooperates with the spacer 138 disposed at the protrusion of the first substrate 132 to support the liquid crystal gap of the switching panel 130, thereby improving the withstand voltage of the switching panel 130. Sex.

In this embodiment, the secondary spacer region S and the main spacer region M can be etched out by etching the first opening H1 of the first dielectric layer 132b, respectively. The first dielectric layer 132b left after the first opening H1 is defined. Therefore, the total area A1 occupied by the secondary spacer region S (first opening H1) and the main spacer region M (the first dielectric layer 132b other than the first opening H1) can be accurately controlled by etching. The ratio of the total area A2 (A1/A2), and the distribution of the secondary interstitial area S and the main interstitial area M in the switching panel 130. By properly designing the arrangement of the secondary spacer region S and the main spacer region M in the switching panel 130, the problem of uneven liquid crystal gap which is easily caused by the spherical spacer in the prior art can be effectively improved, thereby further The switching panel 130 of the embodiment has good liquid crystal gap uniformity. In addition, the switching panel 130 can be optimized at the same time by appropriately adjusting the ratio (A1/A2) of the total area A1 occupied by the first opening H1 to the total area A2 occupied by the first dielectric layer 132b other than the first opening H1. The pressure resistance and the allowable range of the liquid crystal dropping amount. For example, in this embodiment, the total area occupied by the first opening H1 is A1, and the total area occupied by the dielectric layer 132b other than the first opening H1 is A2. Furthermore, the ratio (A1/A2) of the total area A1 occupied by the first opening H1 to the total area A2 occupied by the first dielectric layer 132b other than the first opening H1 may be greater than or equal to 3.

3 is a top plan view of the first substrate corresponding to FIG. 2, wherein the cross section of the first substrate of FIG. 2 corresponds to the line segment AA' in FIG. Referring to FIG. 2 and FIG. 3 simultaneously, in the embodiment, the first conductive pattern 132c may be a plurality of first strip electrodes 132c' electrically insulated from each other, and each of the first openings H1 may be a separate rectangular opening. The second conductive pattern 134b may be a planar electrode overlapping the first conductive pattern 132c. Since the first conductive pattern 132c is a plurality of first strip electrodes 132c' electrically insulated from each other, the switching panel 130 of the embodiment can sequentially drive between the first strip electrodes 132c' and the second conductive patterns 134b. Liquid crystal layer 136.

4 is a top view of a first substrate 132A according to another embodiment of the present invention. Referring to FIG. 4, in this embodiment, the first conductive pattern 132c may be a plurality of first strip electrodes 132c electrically insulated from each other. ', and each of the first openings H1' may be a separate wavy opening. However, the present invention is not limited to the above, the switching panel 130 of the present invention can have multiple driving modes, and the first opening H1 ′ of the first substrate 132 , the first conductive pattern 132 c and the second conductive pattern 134 b of the first substrate 134 can also be used. There are a variety of graphic designs.

For example, the driving manner of the switching panel 130 can be divided into a comprehensive simultaneous switching, and regional switching according to timing. In an embodiment, the first conductive pattern 132c may be a planar electrode, and the second conductive pattern 134b may be a plurality of second strip electrodes or waves electrically insulated from each other. The first opening H1' may be a rectangular opening, a wavy opening or other shaped opening that is independent or interlaced and interconnected. In another embodiment, the second conductive pattern 134b may be a planar electrode, and the first conductive pattern 132c may be a plurality of first wave electrodes electrically insulated from each other, and the first openings H1' may be independent rectangles. Opening, wavy opening or other shaped opening.

In still another embodiment, the first conductive pattern 132c may be a plurality of first strip electrodes or first wave electrodes electrically insulated from each other, and the display panel 110 has a plurality of pixels 112, and each pixel 122 includes a plurality of pixels. The pixels R, G, and B, each of the first wavy electrodes overlaps with at least two sub-pixels (R, G, G, B, or R, B). The second conductive pattern 134b may be a plurality of second strip electrodes or second wave electrodes electrically insulated from each other, and the first openings H1' may be rectangular openings or wavy openings that are independent or mutually staggered and communicate with each other. Or other shapes of openings. Wherein, each wavy opening overlaps with at least two sub-pixels (R, G, G, B or R, B). Also, the first strip electrode or the first wavy electrode may be selectively orthogonal to the second strip electrode or the second wavy electrode. The strip electrodes, the wavy electrodes and the planar electrodes described in this paragraph can each independently receive signals, so that the switching panel 130 can turn on or off different regions according to timing.

In addition, in a further embodiment, the first conductive pattern 132c may be a plurality of first strip electrodes or wave electrodes electrically connected to each other, and the second conductive patterns 134b may be a plurality of second strips electrically insulated from each other. The electrodes or wavy electrodes, and the first openings H1' may be independent rectangular openings, wavy openings or other shaped openings. At least one of each of the wavy electrodes and each of the wavy openings described in this paragraph may overlap with at least two sub-pixels (R, G, G, B or R, B).

On the other hand, in a driving manner of the overall simultaneous switching, in an embodiment, the first conductive pattern 132c may be a planar electrode, and the second conductive pattern 134b may be a plurality of second electrically connected to each other. The strip electrode, the second wavy electrode or the comprehensive electrode, and the first opening H1' may be a rectangular opening, a wavy opening or other shaped opening that is independent or interlaced and interconnected. In another embodiment, the second conductive pattern 134b may be a planar electrode, and the first conductive pattern 132c may be a plurality of first strip electrodes or wave electrodes electrically connected to each other, and the first opening H1' may be Rectangular openings, wavy openings, or other shaped openings that are each independently or interlaced and interconnected. In still another embodiment, the first conductive pattern 132c may be a plurality of first strip electrodes or first wave electrodes electrically connected to each other, and the second conductive patterns 134b may be a plurality of second strips electrically connected to each other. The first electrode H1' may be a rectangular opening, a wavy opening or other shaped opening that is independent or interlaced and interconnected. Also, the first strip electrode or the first wavy electrode may be selectively vertically staggered with the second strip electrode or the second wavy electrode. At least one of each of the wavy electrodes and each of the wavy openings described in this paragraph may overlap with at least two sub-pixels (R, G, G, B or R, B). In addition, a plurality of strip electrodes electrically connected to each other, a plurality of corrugated electrodes electrically connected to each other or a planar surface electrode can receive signals together, so that the switching panel 130 can be simultaneously and comprehensively Turn it on or off.

It is worth mentioning that the above-mentioned wavy opening can lighten the problem of color deviation caused by the difference in liquid crystal gap between the main spacer region M and the secondary spacer region S. The illustration on the right side of FIG. 4 depicts the relative position between the first substrate and the display panel 110. Referring to Fig. 4, since the first opening H1' is wavy, the first dielectric layer 132b outside the first opening H1' assumes a wavy line shape. The first dielectric layer 132b (excluding the first opening H1') having a wavy line shape is located at a main spacer region M having a lower liquid crystal gap, and the first opening H1' is located at a higher liquid crystal gap. Secondary gap area S. Referring to the illustration on the right side of FIG. 4, the first dielectric layer 132b (excluding the first opening H1') having a wavy line shape is more uniformly sub-drawn with different colors of the pixels 112 in the display panel 110. Sub-pixels R, G, and B overlap. The first opening H1', which is also in the form of a wavy line, is also more uniformly overlapped with sub-pixels R, G, B of different colors of the pixels 112 in the display panel 110. In other words, the main spacer region M (and the secondary spacer region S) in which the liquid crystal gap is small in the switching panel 130 does not overlap with the sub-pixels R, G or B of the single color in each pixel 112 to cause color deviation. The problem is easily observed by the user. Therefore, the design of the first dielectric layer 132b in the form of a wavy line segment can alleviate the problem of the color deviation caused by the difference in the liquid crystal gap between the main spacer region M and the secondary spacer region S of the naked-eye stereoscopic display panel.

In addition, in order to further improve the above problem of color deviation, the first dielectric layer and the first opening on the first substrate may also be designed in other shapes. Taking the first substrate 132B of the embodiment of the present invention depicted in FIG. 5 as an example, the first opening H1" may also be designed as a plurality of wavy first openings H1" that are staggered and communicate with each other. Similar to the principle described in the above paragraph, a plurality of wavy first openings H1" staggered and connected to each other are spread over the first substrate, so that it can further dilute the naked-eye stereoscopic display panel due to the main interstitial region M and the second The problem of the color deviation caused by the difference in the liquid crystal gap of the spacer S. However, the present invention is not limited thereto. In other embodiments, the first opening H1" may also be designed as a plurality of rectangles that are staggered and connected to each other. Opening.

[Second embodiment]

Figure 6 is a cross-sectional view showing a switch panel in accordance with a second embodiment of the present invention. Referring to FIG. 6, the switching panel 130A of the present embodiment is similar to the switching panel 130 of the first embodiment, and therefore the same elements are denoted by the same reference numerals. The difference between the two is that the switching panel of the present embodiment further includes a second dielectric layer 134c having a plurality of second openings H2. The following only explains the differences between the two, and the similarities between the two will not be repeated.

The switching panel 130A of the present embodiment includes a first substrate 132, a second substrate 134A, a liquid crystal layer 136 disposed between the first substrate 132 and the second substrate 134A, and a distribution between the first substrate 132 and the second substrate 134A. A plurality of spacers 138. The first substrate 132 has a first dielectric layer 132b and a first conductive pattern 132c, wherein the first dielectric layer 132b has a plurality of first openings H1. The first conductive pattern 132c conformally covers the first dielectric layer 132b. In other words, the first conductive pattern 132c does not fill the first opening H1 in the first dielectric layer 132b. The first conductive pattern 132c is laid along the first dielectric layer 132b and the first opening H1 to exhibit a high and low undulation. The first opening H1 may be a through hole (that is, the first dielectric layer 132b and expose the first substrate 132a) or a recess (that is, the first dielectric layer 132b does not expose the first substrate 132a).

Different from the first embodiment, the second substrate 134A of the present embodiment may further include a second dielectric layer 134c between the second substrate 134a and the second conductive pattern 134b. The second dielectric layer 134c has a plurality of second openings H2, and the second conductive patterns 134b conformally cover the second dielectric layer 134c. In other words, the second conductive pattern 134b does not fill the second opening H2 in the second dielectric layer 134c. The second conductive pattern 134b can be laid along the second dielectric layer 134c and the second opening H2 to exhibit a high and low undulation. The second opening H2 may be a through hole (that is, the second dielectric layer 134c and expose the second substrate 134a) or a recess (that is, the second dielectric layer 134c does not expose the second substrate 134a). In this embodiment, the first opening H1 and the second opening H2 may be substantially aligned. The shape of the second opening may also be like the first opening, and details are not described herein again.

The plurality of spacers 138 of this embodiment are distributed between the first substrate 132 and the second substrate 134A. A portion of the spacer 138 located in the first opening H1 is not in contact with the second substrate 134A, and a portion of the spacer 138 located outside the first opening H1 is in contact with the second substrate 134A. In detail, a portion of the spacer 138 is raised by the protrusion of the first substrate 132 (ie, corresponding to the position of the first dielectric layer 132b, excluding the first opening H1) and the protrusion of the second substrate 134A ( That is, where the position corresponding to the position of the second dielectric layer 134c does not include the second opening H2), the main force supporting the liquid crystal gap is formed. A portion of the spacer 138 is disposed at a location where the first opening H1 is located and is not in contact with the second substrate 134A. When the switching panel 130A is stressed, the spacer 138 disposed at the same position as the first opening H1 contacts the second substrate 134A to become an auxiliary force for supporting the liquid crystal gap. The switching panel 130A of the present embodiment has similar functions and advantages as the switching panel 130 of the first embodiment, and will not be repeated here.

In summary, in the naked-eye stereoscopic display panel according to an embodiment of the invention, the switching panel forms a force mainly supporting the liquid crystal spacer by the protrusion on the substrate and the spacer located on the protrusion, and borrows The auxiliary force supporting the liquid crystal spacer is formed by the recesses on the substrate and the spacers on the recesses. Therefore, when the switching panel in the naked-eye stereoscopic display panel according to an embodiment of the present invention receives an external force, in addition to the protrusions on the substrate and the spacers on the protrusions can form a main force for supporting the liquid crystal spacers. The spacer located at the recess of the substrate can form an auxiliary force for supporting the liquid crystal spacer, thereby making the switching panel have high withstand voltage. Further, even if the switching panel has high withstand voltage, the switching panel can have a wide liquid crystal dropping amount tolerance range.

In addition, in the naked-eye stereoscopic display panel of another embodiment of the present invention, the dielectric layer of the switching panel may have a wavy or other irregular opening, and lighten the liquid crystal due to the main interstitial region and the secondary interstitial region. The problem of color deviation caused by different gaps.

In addition, in an embodiment of the invention, the position of the first dielectric layer in the switching panel can be appropriately designed and implemented by etching. In this way, the position of the protrusion on the substrate (the first dielectric layer, excluding the first opening) forming the main force supporting the liquid crystal spacer and the spacer located on the protrusion can be appropriately configured. Further, the problem of uneven liquid crystal gap in the prior art is improved.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100. . . Naked eye stereo display panel

110. . . Display panel

112. . . Pixel

120. . . Cylindrical lens array

122. . . Lens unit

124. . . Dielectric layer

130. . . Switch panel

132. . . First substrate

132a. . . First substrate

132b. . . First dielectric layer

132c. . . First conductive pattern

132c’. . . First strip electrode

134, 134A. . . Second substrate

134a. . . Second substrate

134b. . . Second conductive pattern

134c. . . Second dielectric layer

136. . . Liquid crystal layer

138. . . Interstitial

H1, H2, H1', H1"... openings

M. . . Main interstitial area

P. . . spacing

R, G, B. . . Subpixel

S. . . Secondary gap area

W. . . width

1 is a cross-sectional view showing a naked-eye stereoscopic display panel according to an embodiment of the present invention.

2 is a cross-sectional view showing a switch panel according to a first embodiment of the present invention.

3 is a top plan view of the first substrate corresponding to FIG. 2.

4 is a top plan view of a first substrate according to an embodiment of the invention.

FIG. 5 is a top plan view of a first substrate according to an embodiment of the invention.

Figure 6 is a cross-sectional view showing a switch panel in accordance with a second embodiment of the present invention.

130. . . Switch panel

132. . . First substrate

132a. . . First substrate

132b. . . First dielectric layer

132c. . . First conductive pattern

132c’. . . First strip electrode

134. . . Second substrate

134a. . . Second substrate

134b. . . Second conductive pattern

136. . . Liquid crystal layer

138. . . Interstitial

H1. . . Opening

M. . . Main interstitial area

S. . . Secondary gap area

Claims (25)

A naked-eye stereoscopic display panel includes: a display panel for providing an image; and a switching panel disposed on the transmission path of the image, the switching panel comprising: a first substrate having a first dielectric layer and at least one a first conductive pattern, wherein the first dielectric layer has a plurality of first openings, and the first conductive pattern is conformally covered on the first dielectric layer; and a second substrate has at least one a second conductive pattern; a plurality of spacers are disposed between the first substrate and the second substrate, wherein a portion of the spacers located in the first openings are not in contact with the second substrate, and are located at the first a portion of the spacer outside the opening is in contact with the second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and a cylindrical lens array disposed on the transmission path of the image, and the A switching panel is located between the cylindrical lens array and the display panel. The auto-stereoscopic display panel of claim 1, wherein each of the spacers has substantially the same size. The naked-eye stereoscopic display panel of claim 1, wherein the first openings occupy a total area of A1, and the total area of the dielectric layers other than the first openings is A2. And A1 is greater than or equal to A2. The naked-eye stereoscopic display panel according to claim 3, wherein A1/A2 is greater than or equal to 3. The naked-eye stereoscopic display panel of claim 1, wherein each of the first openings is a uniform hole or a recess. The naked-eye stereoscopic display panel of claim 1, wherein the lens array comprises: a plurality of lens portions arranged in parallel with each other, each lens portion having birefringence; and a dielectric layer covering the Some lens parts. The auto-stereoscopic display panel of claim 1, wherein the first substrate is located between the second substrate and the display panel. The auto-stereoscopic display panel of claim 1, wherein the first substrate is located between the second substrate and the cylindrical lens array. The auto-stereoscopic display panel of claim 1, wherein the first conductive pattern comprises a plurality of first strip electrodes or wave electrodes electrically insulated from each other. The auto-stereoscopic display panel of claim 9, wherein the second conductive pattern comprises a plurality of second strip electrodes or wave electrodes electrically insulated from each other. The naked-eye stereoscopic display panel of claim 9, wherein the second conductive pattern comprises a one-sided electrode. The auto-stereoscopic display panel of claim 1, wherein the first conductive pattern comprises a plurality of first strip electrodes or wave electrodes electrically connected to each other. The auto-stereoscopic display panel of claim 12, wherein the second conductive pattern comprises a plurality of second strip electrodes or wave electrodes electrically insulated from each other. The auto-stereoscopic display panel of claim 12, wherein the second conductive pattern comprises a plurality of second strip electrodes or wave electrodes electrically connected to each other. The auto-stereoscopic display panel of claim 12, wherein the second conductive pattern comprises a one-sided electrode. The auto-stereoscopic display panel of claim 1, wherein the first conductive pattern comprises a one-sided electrode. The auto-stereoscopic display panel of claim 16, wherein the second conductive pattern comprises a plurality of second strip electrodes or wave electrodes electrically connected to each other. The auto-stereoscopic display panel of claim 16, wherein the second conductive pattern comprises a plurality of second strip electrodes or wave electrodes electrically insulated from each other. The auto-stereoscopic display panel of claim 16, wherein the second conductive pattern comprises a one-sided electrode. The naked-eye stereoscopic display panel of claim 9, wherein the first conductive pattern is the plurality of first wavy electrodes electrically insulated from each other, the display panel having a plurality of pixels, each of the paintings The element includes a plurality of sub-pixels, each of the first wave electrodes overlapping with at least two of the sub-pixels. The naked-eye stereoscopic display panel of claim 1, wherein each of the first openings is a rectangular opening or a wavy opening. The naked-eye stereoscopic display panel of claim 21, wherein each of the first openings is the wavy opening, the display panel has a plurality of pixels, each of the pixels comprising a plurality of sub-pixels, each of the plurality of pixels An opening overlaps with at least two of the sub-pixels. The auto-stereoscopic display panel of claim 21, wherein each of the first openings is a wavy first opening or a rectangular first opening that is independent of each other. The auto-stereoscopic display panel of claim 21, wherein each of the first openings is a plurality of wavy first openings or rectangular first openings that are staggered and communicate with each other. The naked-eye stereoscopic display panel of claim 1, further comprising a second dielectric layer between the second substrate and the second conductive pattern, wherein the second dielectric layer has a plurality of second An opening, and the second conductive pattern is conformally covered on the second dielectric layer.