CN106125417B - Liquid crystal grating and control method thereof, 3D display panel and display device - Google Patents

Abstract

The present invention provides a liquid crystal grating and its control method, a 3D display panel and a display device. The first grating electrode in the liquid crystal grating includes a plurality of grating sub-electrodes arranged in an array, and the second grating electrode is an integral transparent electrode; Alternatively, the second grating electrode includes a plurality of grating sub-electrodes arranged in an array, and the first grating electrode is an integral transparent electrode; the plurality of grating sub-electrodes in each row are connected to the row driving lines through a plurality of control switches, and the plurality of grating sub-electrodes in each column Each grating sub-electrode is connected to the column driving line through a plurality of control switches. In the embodiment of the present invention, the electrode pattern on the grating electrode is designed as a plurality of grating sub-electrodes arranged in an array, and an electrical signal is applied to the row driving line or the column driving line at intervals, so that the liquid crystal layer is partially transparent and partially transparent. Light is transmitted, slits are formed at intervals, and electric control signals are used to adjust the shape and direction of the grating formed on the liquid crystal layer, so as to realize the random switching of the horizontal or vertical direction of the 3D display effect.

Description

A liquid crystal grating and its control method, 3D display panel and display device

technical field

The invention relates to the technical field of 3D display, in particular to a liquid crystal grating and a control method thereof, a 3D display panel and a display device.

Background technique

At present, with the continuous development of liquid crystal display technology, the application of naked-eye 3D technology is also becoming more and more mature. The specific implementation method is to assemble a grating module composed of a switch liquid crystal screen, a polarizing film and a polymer liquid crystal layer on the surface of the display panel. In the three-dimensional display mode, under certain working conditions, the liquid crystal layer and the polarizing film can form vertical stripes with a width of tens of microns, blocking part of the view, so that the left eye of the viewer only receives the left eye view, and the right eye only receives the view. The right-eye view creates a 3D image effect by separating the visual images of the left and right eyes. In the two-dimensional display mode, the liquid crystal grating does not form any occlusion, and is in a fully transparent state. The left and right eyes of the viewer receive the same image, and the display is in an ordinary 2D display mode.

In the process of realizing the present invention, the inventors found that there are at least the following problems in the related art: the liquid crystal grating in the related art can only realize the three-dimensional effect in one of the horizontal and vertical directions. Randomly switch between horizontal and vertical to achieve a three-dimensional effect, but the vertical slit grating in the related art cannot realize random switching between horizontal and vertical, so the existing liquid crystal grating cannot meet the needs of practical applications.

Contents of the invention

In view of this, the purpose of the embodiments of the present invention is to provide a liquid crystal grating and its control method, a 3D display panel and a display device, so as to solve the problem that the vertical slit grating in the related art cannot realize random switching between horizontal and vertical Existing liquid crystal gratings cannot meet the needs of practical applications.

In a first aspect, an embodiment of the present invention provides a liquid crystal grating, including an upper substrate and a lower substrate oppositely arranged, a first grating electrode formed on the upper substrate, and a second grating formed on the lower substrate. electrode, a liquid crystal layer is arranged between the first grating electrode and the second grating electrode, the first grating electrode includes a plurality of grating sub-electrodes arranged in an array, and the second grating electrode is an integral transparent electrode ;or,

The second grating electrode includes a plurality of grating sub-electrodes arranged in an array, and the first grating electrode is an integral transparent electrode;

Multiple photogrid sub-electrodes in each row are connected to row driving lines through multiple control switches, and multiple photogrid sub-electrodes in each column are connected to column driving lines through multiple control switches.

With reference to the first aspect, the embodiment of the present invention provides a first possible implementation manner of the first aspect, where the control switch includes: a thin film transistor.

In combination with the first aspect, the embodiment of the present invention provides a second possible implementation manner of the first aspect, the shapes of the grating sub-electrodes are all square, and the distance between each of the grating sub-electrodes is equal.

With reference to the first aspect, the embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the row driving line is separated from the column driving line through an insulating layer.

In combination with the first aspect, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect, the liquid crystal grating further includes a first alignment element disposed on the side of the first grating electrode facing the second grating electrode. film layer, and a second alignment film layer disposed on the side of the second grating electrode facing the first grating electrode.

In combination with the first aspect, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect, the material of the second grating electrode is an organic transparent conductive material and the second grating electrode is an integral transparent electrode, the The second grating electrode is used to connect the common voltage signal and serve as an alignment film layer, and the liquid crystal grating further includes an alignment film layer disposed on the side of the first grating electrode facing the second grating electrode; or,

The material of the first grating electrode is an organic transparent conductive material and the first grating electrode is an integral transparent electrode. The first grating electrode is used to connect a common voltage signal and serve as an alignment film layer. The liquid crystal grating also includes a set The alignment film layer on the side of the second grating electrode facing the first grating electrode.

In combination with the fifth possible implementation manner of the first aspect, the embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the organic transparent conductive material includes one or more of the following: acrylic acid Mixed materials of resin and silver nanowires, mixed materials of acrylic resin and carbon nanotubes, mixed materials of polyimide resin and carbon nanotubes, mixed materials of acrylic resin and carbon nanotubes.

In the second aspect, the embodiment of the present invention also provides a 3D display panel, including a 2D display screen, and the liquid crystal grating described in any one of the sixth possible implementation manners from the first aspect to the first aspect, so The liquid crystal grating is arranged on the light emitting side of the 2D display screen.

In a third aspect, an embodiment of the present invention further provides a 3D display device, including the 3D display panel as described in the second aspect.

In a fourth aspect, an embodiment of the present invention also provides a method for controlling a liquid crystal grating, which is used to control the liquid crystal grating described in any one of the sixth possible implementation manners from the first aspect to the first aspect, the method include:

When the 3D display panel using the liquid crystal grating is used for vertical 3D display, an electric field is formed between the first grating electrode and the second grating electrode, and an electric signal is applied to each of the row driving lines at intervals, so that the liquid crystal layer partially light-transmitting and partially opaque, so that the liquid crystal layer forms a transverse light and dark slit grating;

When the 3D display panel using the liquid crystal grating is used for horizontal 3D display, an electric field is formed between the first grating electrode and the second grating electrode, and an electric signal is applied to each of the column driving lines at intervals, so that the liquid crystal layer Partial light transmission and partial light transmission, so that the liquid crystal layer forms a vertical slit grating with alternate light and dark;

When the 3D display panel using the liquid crystal grating performs 2D display, no electric field is formed between the first grating electrode and the second grating electrode, so that the entire surface of the liquid crystal layer is transparent.

In the liquid crystal grating and its control method, 3D display panel, and display device provided in the embodiments of the present invention, the liquid crystal grating includes an upper substrate and a lower substrate oppositely arranged, and a first grating electrode formed on the upper substrate, formed on the The second grating electrode on the lower substrate, a liquid crystal layer is arranged between the first grating electrode and the second grating electrode, the first grating electrode includes a plurality of grating sub-electrodes arranged in an array, and the second grating electrode is an integral transparent electrode ; Or, the second grating electrode includes a plurality of grating sub-electrodes arranged in an array, and the first grating electrode is an integral transparent electrode; a plurality of grating sub-electrodes in each row are connected to the row driving line through a plurality of control switches, and each column Multiple photogrid sub-electrodes are connected to column driving lines through multiple control switches. In the embodiment of the present invention, the electrode pattern on the grating electrode is designed as a plurality of grating sub-electrodes arranged in an array, and an electrical signal is applied to the row driving line or the column driving line at intervals, so that the liquid crystal layer is partially transparent and partially transparent. Light is transmitted, slits are formed at intervals, and electric control signals are used to adjust the shape and direction of the grating formed on the liquid crystal layer, so as to realize the random switching of the horizontal or vertical direction of the 3D display effect.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Figure 1a shows a schematic structural diagram of the first liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 1b shows a schematic structural diagram of the second liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 2 shows a schematic diagram of the first structure of the grating sub-electrodes arranged in an array in the liquid crystal grating provided by Embodiment 1 of the present invention;

3 shows a schematic diagram of the connection relationship between the grating sub-electrodes arranged in an array and the control switches and driving lines in the liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 4a shows a schematic diagram of the second structure of the grating sub-electrodes arranged in an array in the liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 4b shows a schematic diagram of the third structure of the grating sub-electrodes arranged in an array in the liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 5a shows a schematic diagram of the effect of the slit grating formed by the liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 5b shows another schematic diagram of the effect of the slit grating formed by the liquid crystal grating provided by Embodiment 1 of the present invention;

FIG. 6 shows a schematic structural diagram of a third liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 7a shows a schematic structural diagram of a fourth liquid crystal grating provided by Embodiment 1 of the present invention;

Fig. 7b shows a schematic structural diagram of a fifth liquid crystal grating provided by Embodiment 1 of the present invention;

FIG. 8 shows a schematic structural diagram of a 3D display panel provided by Embodiment 2 of the present invention;

FIG. 9 shows a schematic structural diagram of a 3D display device provided by Embodiment 3 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Considering that the liquid crystal grating in the related technology can only realize the three-dimensional effect in one of the horizontal and vertical directions, with the continuous promotion of mobile phone applications, it is necessary to randomly switch between the horizontal and vertical directions to achieve the three-dimensional effect, but the vertical direction in the related technology Slit gratings cannot realize random switching between horizontal and vertical orientations, so the existing liquid crystal gratings cannot meet the requirements of practical applications. Based on this, embodiments of the present invention provide a liquid crystal grating and a control method thereof, a 3D display panel and a display device, which will be described below through embodiments.

Embodiment one:

Two schematic diagrams of the structure of the liquid crystal grating shown in Figure 1a and Figure 1b, the liquid crystal grating includes an upper substrate 101 and a lower substrate 102 arranged oppositely, and a first grating electrode 104 formed on the upper substrate 101, formed on a second grating electrode 105 on the lower substrate 102, a liquid crystal layer 103 is disposed between the first grating electrode 104 and the second grating electrode 105;

Considering that the electrode pattern can be made on the first grating electrode 104, and the electrode pattern can also be made on the second grating electrode, any one of the first grating electrode 104 and the second grating electrode 105 has an electrode pattern, and the electrode pattern determines the narrow gap. Corresponding to the shape of the slit grating, the other grating electrode is an overall transparent electrode, which can be grounded to GND, specifically:

The first is that there is an electrode pattern on the first grating electrode 104: as shown in FIG. An enlarged schematic diagram of the electrode 104, in which a plurality of square patterns are grating sub-electrodes 1041), and the above-mentioned second grating electrode 105 is an integral transparent electrode; a plurality of the above-mentioned grating sub-electrodes 1041 of each row pass through a plurality of control switches 33 and row driving lines 11 connection, the multiple grating sub-electrodes 1041 of each column are connected to the column drive line 22 through multiple control switches 33;

The second is that there is an electrode pattern on the first grating electrode 104: as shown in FIG. An enlarged schematic diagram of the electrode 105, in which a plurality of square patterns are grating sub-electrodes 1041), and the above-mentioned first grating electrode 104 is an integral transparent electrode; a plurality of the above-mentioned grating sub-electrodes 1041 of each row pass through a plurality of control switches 33 and row driving lines 11 connection, and the plurality of grating sub-electrodes 1041 of each column are connected to the column driving line 22 through a plurality of control switches 33 .

Wherein, after the electric signal is applied to the grating sub-electrode 1041 through the row driving line 11 or the column driving line 22, an electric field can be formed between the first grating electrode 104 and the second grating electrode 105, and then the liquid crystal layer 103 is deflected, thereby forming a lateral The grating may form a vertical grating to realize the random switching of the three-dimensional display effect in the vertical or horizontal direction.

In the embodiment provided by the present invention, by designing the electrode pattern on the grating electrode as a plurality of grating sub-electrodes 1041 arranged in an array, the row driving line 11 or the column driving line 22 is controlled to apply an electrical signal at intervals, so that The liquid crystal layer is partially light-transmissive and partially opaque, with slits formed at intervals, and electrical control signals are used to adjust the shape and direction of the grating formed on the liquid crystal layer 103, thereby realizing random switching of horizontal or vertical 3D display effects.

Specifically, as shown in FIG. 2 , the shapes of the above-mentioned grating sub-electrodes 1041 are all square, and the spacing between each of the above-mentioned grating sub-electrodes 1041 is equal, and they are distributed on the upper substrate 101 or the lower substrate 102 in an array arrangement. Each grating sub-electrode 1041 is connected to the row driving line 11 through a control switch 33, and each grating sub-electrode 1041 is also connected to the column driving line 22 through another control switch 33, wherein the above-mentioned row driving line 11 is connected to the row driving line 11 through an insulating layer. The above-mentioned column driving lines 22 are separated, so as to realize mutual isolation of the row driving lines 11 and the column driving lines 22 .

Furthermore, in order to realize the dark stripes of the entire row or column, the distance between two adjacent grating sub-electrodes 1041 needs to be very small relative to the size of the grating sub-electrodes 1041. The characteristics of process manufacturing and small size, based on this, as shown in Figure 3, the above-mentioned control switch 33 includes: a thin film transistor (TFT, Thin-FilmTransistor), the thin film transistor can be an N-type thin film transistor or a P-type thin film transistor Transistors, corresponding thin film transistors can be selected according to actual needs.

Specifically, each photogrid sub-electrode 1041 is connected to the row driving line 11 through a thin film transistor, the drain 333 of the thin film transistor is connected to the photogrid sub-electrode 1041, and the gate 331 and source 332 of the thin film transistor are connected to the row driving line 11. 11 connection; each photogrid sub-electrode 1041 is also connected to the column drive line 22 through another thin film transistor, the drain 333 of the thin film transistor is connected to the photogrid sub-electrode 1041, the gate 331 and source 332 of the thin film transistor are connected to the column driver Line 22 connects;

When neither the row drive lines 11 are powered on nor the column drive lines 22 are powered on, the thin film transistors connected to the row drive lines 11 are disconnected, and the thin film transistors connected to the column drive lines 22 are also disconnected; When the line 11 applies an electric signal and the column drive line 22 does not apply an electric signal, the thin film transistor connected to the row drive line 11 is turned on, and the thin film transistor connected to the column drive line 22 is turned off; on the contrary, when the column drive line 22 is applied When the electric signal is applied and the row driving line 11 is not supplied with an electric signal, the thin film transistors connected to the column driving line 22 are turned on, while the thin film transistors connected to the row driving line 11 are turned off.

Specifically, the specific method for presenting the vertical three-dimensional display effect is as follows: as shown in FIG. The control switch 33 connected to the row drive line 11 that applies the electric signal is turned on, and the control switch 33 connected to the row drive line 11 that does not apply the electric signal and the column drive line 22 that does not apply the electric signal is turned off, so that the horizontally arranged The row grating sub-electrodes 1041 are powered at intervals, an electric field is formed between the powered grating sub-electrodes 1041 and the overall transparent electrode, and the liquid crystal is deflected to form a barrier fence, realizing the vertical three-dimensional grating display mode. At this time, it is applied to the vertical placement of the display screen , taking the display of a mobile phone as an example, the short side of the display screen of the mobile phone is placed vertically parallel to the human eye.

Correspondingly, as shown in Figure 5a, it shows a schematic diagram of the effect of the horizontal slit grating formed by the above-mentioned liquid crystal grating (corresponding to the way of applying electrical signals to each row drive line 11 and column drive line 22 in Figure 4a), and it is still displayed on a mobile phone For example, when the longitudinal three-dimensional display effect is presented, the slit is parallel to the long side. When there is a voltage difference between the grating sub-electrode 1041 and the overall transparent electrode, an electric field is formed between the grating sub-electrode 1041 and the overall transparent electrode, and the electric field acts on the liquid crystal. layer 103, the corresponding liquid crystals at the positions of the grating sub-electrodes 1041 that apply electrical signals are opaque, forming black stripes. The corresponding liquid crystal at the position transmits light to form light-transmitting stripes, so that the liquid crystal layer 103 forms a plurality of stripes with alternating light and dark in the horizontal direction, thereby realizing the vertical 3D display effect of a barricade for naked eyes.

Specifically, the specific method for presenting the horizontal three-dimensional display effect is as follows: as shown in FIG. The control switch 33 connected to the column drive line 22 that applies the electric signal is turned on, and the control switch 33 connected to the column drive line 22 that does not apply the electric signal and the row drive line 11 that does not apply the electric signal is turned off, so that the vertically arranged multiple The column grating sub-electrodes 1041 are powered at intervals, an electric field is formed between the powered grating sub-electrodes 1041 and the overall transparent electrode, and the liquid crystal is deflected to form a barrier grid to realize a horizontal three-dimensional grating display mode. Taking the mobile phone display as an example, the long side of the mobile phone display is parallel to the human eye and placed horizontally.

Correspondingly, as shown in FIG. 5b, it shows a schematic diagram of the effect of the vertical slit grating formed by the above-mentioned liquid crystal grating (corresponding to the way of applying electrical signals to each row drive line 11 and column drive line 22 in FIG. 4b ), still in the form of a mobile phone Take display as an example, when the horizontal three-dimensional display effect is presented, the slit is parallel to the short side. When there is a voltage difference between the grating sub-electrode 1041 and the overall transparent electrode, an electric field is formed between the grating sub-electrode 1041 and the overall transparent electrode, and the electric field acts on the When the liquid crystal layer 103 is used, the corresponding liquid crystals at the positions of the grating sub-electrodes 1041 that apply electrical signals are opaque, forming black stripes. The width of the black stripes is the same as the width of the grating sub-electrodes 1041. The corresponding liquid crystal at the position transmits light to form light-transmitting stripes, so that the liquid crystal layer 103 forms a plurality of vertically alternate light and dark stripes, thereby realizing the horizontal 3D display effect of a naked-eye barrier barrier.

In the embodiment provided by the present invention, the arrayed grating electrode pattern is used, and the thin film transistor is selected as the control switch 33, and the conduction of the thin film transistor is controlled by controlling the power on and off of the row driving line 11 and the column driving line 22. and disconnection, and then control the applied electrical signal and power-off state of each grating sub-electrode 1041, so that the liquid crystal forms a horizontal grating or a vertical grating, so as to realize the random switching between the vertical three-dimensional display mode and the horizontal three-dimensional display mode, satisfying the user's needs when using the mobile phone When viewing, whether the mobile phone screen is placed horizontally or vertically, the effect of three-dimensional display can be realized.

Further, as shown in FIG. 6 , the liquid crystal grating further includes a first alignment film layer 106 disposed on the side of the first grating electrode 104 facing the second grating electrode 105 , and a first alignment film layer 106 disposed on the side of the second grating electrode 105 facing the above-mentioned The second alignment film layer 107 on the side of the first grating electrode 104 .

Wherein, the above-mentioned first alignment film layer 106 and the above-mentioned second alignment film layer 107 are all close to the liquid crystal layer 103, the first alignment film layer 106 is arranged between the first grating electrode 104 and the liquid crystal layer 103, and the second alignment film layer 107 is arranged Between the second grating electrode 105 and the liquid crystal layer 103 , that is, on both sides of the liquid crystal layer 103 , there are alignment film layers, which can arrange the liquid crystals orderly and evenly distribute them.

Further, considering that the grating electrode and the alignment film layer appear in pairs and are arranged close to each other, the alignment film layer is generally an organic transparent conductive material covered by the entire substrate, and the organic transparent conductive material can also be used for the grating electrode, and when the grating electrode is all When the overall electrode covered by the substrate, the grating electrode and the alignment film adjacent to the grating electrode can be combined into the same film layer, and the process of growing the grating electrode and the alignment film at the same time simplifies the manufacturing process of the liquid crystal grating and improves the liquid crystal grating. production efficiency, thereby improving the production efficiency of 3D liquid crystal display panels, in the embodiment provided by the present invention, the grating electrode with integral electrode structure can be arranged at the lower substrate 102, that is, the second grating electrode 105 is an integral electrode, or can be It is arranged at the upper substrate 101, that is, the first grating electrode 104 is an integral electrode, so it has the following two different liquid crystal grating structures, specifically:

The first method: when the second grating electrode 105 has an integral electrode structure, the second grating electrode 105 and the alignment film adjacent to the second grating electrode 105 are combined into the same film layer, and the second grating electrode 105 and the alignment film adjacent to the second grating electrode 105 are grown simultaneously. The process of the second alignment film layer 107, as shown in FIG. Voltage signal and as an alignment film layer, the liquid crystal grating further includes an alignment film layer disposed on the side of the first grating electrode 104 facing the second grating electrode 105, and the alignment film layer is the first alignment film layer 106;

The second type: when the first grating electrode 104 has an integral electrode structure, the first grating electrode 104 and the alignment film adjacent to the first grating electrode 104 are combined into the same film layer, and the first grating electrode 104 and the first grating electrode 104 are grown simultaneously. The process of the first alignment film layer 106, as shown in FIG. Voltage signal and as an alignment film layer, the liquid crystal grating further includes an alignment film layer disposed on the side of the second grating electrode 105 facing the first grating electrode 104 , and the alignment film layer is the second alignment film layer 107 .

In addition, the liquid crystal grating further includes a first polarizer and a second polarizer, the first polarizer is arranged on the side of the upper substrate 101 facing away from the first grating electrode 104, and the second polarizer is arranged on the lower substrate 102 The side facing away from the second grating electrode 105;

Wherein, the above-mentioned first polarizer and the above-mentioned second polarizer can filter passing light to form polarized light.

In the embodiment provided by the present invention, the liquid crystal grating is simplified by combining the grating electrode with an integral electrode structure and the alignment film adjacent to the grating electrode into the same film layer, and adopting the process of growing the grating electrode and the alignment film at the same time. The advanced production process improves the production efficiency of liquid crystal gratings, thereby improving the production efficiency of 3D liquid crystal display panels.

Wherein, the above-mentioned organic transparent conductive material includes one or more of the following: a mixed material of acrylic resin and silver nanowires, a mixed material of acrylic resin and carbon nanotubes, a mixed material of polyimide resin and carbon nanotubes, a mixed material of acrylic resin and Mixed materials with carbon nanotubes.

Further, the lower substrate 102 in the above-mentioned liquid crystal grating and the upper substrate 101 in the 2D display screen share the same substrate, which further simplifies the structure of the 3D display panel and eliminates the need for lamination steps between the 2D display screen and the liquid crystal grating, thereby simplifying the entire process. The production process of the 3D display panel improves production efficiency, reduces labor costs, and reduces one substrate, thereby not only reducing the production cost of the 3D display panel, but also reducing the thickness of the 3D display panel.

In the liquid crystal grating provided in the embodiment of the present invention, by designing the electrode pattern on the grating electrode as a plurality of grating sub-electrodes 1041 arranged in an array, the row driving line 11 or the column driving line 22 is controlled to apply an electrical signal at intervals , making the liquid crystal layer partly transparent and partly opaque, forming slits at intervals, using electrical control signals to adjust the shape and direction of the grating formed on the liquid crystal layer 103, thereby realizing random switching of the horizontal or vertical direction of the 3D display effect; further The method of setting the pattern of the arrayed grating electrode is adopted, and the thin film transistor is selected as the control switch 33, and the on and off of the thin film transistor is controlled by controlling the power on and off of the row driving line 11 and the column driving line 22, thereby controlling each The applied electric signal and power-off state of the grating sub-electrode 1041 make the liquid crystal form a horizontal grating or a vertical grating, so as to realize the random switching between the vertical three-dimensional display mode and the horizontal three-dimensional display mode, which is satisfied when the user uses a mobile phone to watch, whether it is a mobile phone Whether the screen is placed horizontally or the mobile phone screen is placed vertically, the effect of three-dimensional display can be realized; further, by combining the grating electrode with the overall electrode structure and the alignment film adjacent to the grating electrode into the same film layer, the simultaneous growth method is adopted. The technology of the grating electrode and the alignment film simplifies the manufacturing process of the liquid crystal grating, improves the manufacturing efficiency of the liquid crystal grating, and further improves the manufacturing efficiency of the 3D liquid crystal display panel.

Embodiment two:

The embodiment of the present invention also provides a 3D display panel. As shown in FIG. 8, the 3D display panel 60 includes a 2D display screen and a liquid crystal grating 601 as described in Embodiment 1, and the liquid crystal grating 601 is arranged on the above-mentioned 2D display screen. the light emitting side.

The specific implementation process of the 3D display panel 60 is similar to that of the liquid crystal grating 601 described above, and reference may be made to the above embodiment of the liquid crystal grating 601 , and repeated descriptions will not be repeated here.

Wherein, the screen size of the liquid crystal grating 601 is generally consistent with the screen size of the supporting 2D display screen 602, and the liquid crystal grating 601 is arranged on the light-emitting side of the 2D display screen 602, and the 2D display screen and the liquid crystal grating 601 can be bonded to each other through a bonding process. The lower substrate 102 of the grating 601 and the upper substrate 101 of the 2D display screen are bonded together, and the lower substrate 102 of the liquid crystal grating 601 and the upper substrate 101 of the 2D display screen 602 can also share the same substrate. Preferably, the structure of the 3D display panel 60 is further simplified by adopting the method that the lower substrate 102 of the liquid crystal grating 601 and the upper substrate 101 of the 2D display screen 602 share the same substrate, and there is no need to attach the 2D display screen 602 to the liquid crystal grating 601. combined process, thereby simplifying the manufacturing process of the entire 3D display panel 60, improving production efficiency, reducing labor costs, and reducing one substrate, thereby not only reducing the manufacturing cost of the 3D display panel 60, but also reducing the thickness of the 3D display panel 60 .

Specifically, the 2D display screen 602 can use various types of display screens, and for different 2D display screens 602, the overall structure of the 3D display panel 60 and each substrate are also different. Based on this, the above-mentioned 2D display screen 602 is For a liquid crystal display, the 3D display panel 60 further includes a backlight module disposed on the light-incident side of the 2D display 602; or, the 2D display 602 is an organic electroluminescent diode display.

Wherein, when the above-mentioned 2D display screen 602 is a liquid crystal display screen, the upper substrate 101 of the 2D display screen 602 is a color filter substrate or a packaging substrate, and the lower substrate 102 of the 2D display screen 602 is an array substrate.

Wherein, when the above-mentioned 2D display screen 602 is an organic electroluminescence diode display screen, the upper substrate 101 of the 2D display screen 602 is a packaging substrate or a protective substrate, and the lower substrate 102 of the 2D display screen 602 is an array substrate.

In the 3D display panel 60 provided by the embodiment of the present invention, the display panel includes a 2D display screen and a liquid crystal grating 601 arranged on the light-emitting side of the 2D display screen. The pattern of grating sub-electrodes 1041 is used to control the row driving line 11 or the column driving line 22 to apply an electrical signal at intervals to make the liquid crystal layer partially transparent and partially opaque, forming slits at intervals, and using the electrical control signal to adjust the liquid crystal layer. The shape and direction of the grating formed on 103, so as to realize the random switching of the horizontal or vertical direction of the 3D display effect; further, adopt the arrangement mode of the array type grating electrode pattern, and select the thin film transistor as the control switch 33, by controlling the row drive line 11 and the column drive line 22 to control the turn-on and turn-off of the thin film transistor, and then control the application of electrical signals and the power-off state of each grating sub-electrode 1041, so that the liquid crystal forms a horizontal grating or a vertical grating, thereby realizing a vertical three-dimensional The random switching between the display mode and the horizontal three-dimensional display mode satisfies the user's need to use the mobile phone to watch, no matter whether the mobile phone screen is placed horizontally or vertically, the effect of three-dimensional display can be achieved; further, by adopting the overall The grating electrode of the electrode structure and the alignment film adjacent to the grating electrode are combined into the same film layer, and the process of growing the grating electrode and the alignment film at the same time simplifies the manufacturing process of the liquid crystal grating 601 and improves the manufacturing efficiency of the liquid crystal grating 601. Further, the manufacturing efficiency of the 3D liquid crystal display panel is improved.

Embodiment three:

The embodiment of the present invention also provides a 3D display device. As shown in FIG. 9 , the 3D display device 1 includes the 3D display panel 60 as described in the second embodiment.

Specifically, the above-mentioned 3D display device 1 may be a display, and the above-mentioned 3D display panel 60 is arranged in the casing of the display through a specific circuit connection relationship, wherein, the screen size of the 60 kinds of liquid crystal gratings 601 of the 3D display panel is generally the same as that of the matching used The 2D display screen 602 has the same screen size, and the liquid crystal grating 601 is arranged on the light emitting side of the 2D display screen 602 , and the lower substrate 102 of the liquid crystal grating 601 and the upper substrate 101 of the 2D display screen 602 share the same substrate.

In the 3D display device 1 provided by the embodiment of the present invention, the display device includes a 3D display panel 60, and the display panel includes a 2D display screen and a liquid crystal grating 601 arranged on the light-emitting side of the 2D display screen. The electrode pattern is designed as a plurality of grating sub-electrodes 1041 arranged in an array, and the row driving line 11 or the column driving line 22 is controlled to apply an electrical signal at intervals to make the liquid crystal layer partially transparent and partially opaque, forming slits at intervals , using electrical control signals to adjust the shape and direction of the grating formed on the liquid crystal layer 103, so as to realize the random switching of the horizontal or vertical direction of the 3D display effect; Control the switch 33 to control the turn-on and turn-off of the thin film transistor by controlling the power on and off of the row drive line 11 and the column drive line 22, and then control the applied electric signal and power-off state of each photogrid sub-electrode 1041, so that the liquid crystal forms a lateral Grating or vertical grating, so as to realize the random switching between the vertical three-dimensional display mode and the horizontal three-dimensional display mode, so that when the user uses the mobile phone to watch, whether the mobile phone screen is placed horizontally or vertically, the effect of three-dimensional display can be realized; Furthermore, by combining the grating electrode with an integral electrode structure and the alignment film adjacent to the grating electrode into the same film layer, and adopting the process of growing the grating electrode and the alignment film at the same time, the manufacturing process of the liquid crystal grating 601 is simplified, The production efficiency of the liquid crystal grating 601 is improved, and the production efficiency of the 3D liquid crystal display panel is further improved.

Embodiment four:

The embodiment of the present invention also provides a method for controlling the liquid crystal grating 601, which is used to control the liquid crystal grating 601 as described in Embodiment 1. The control method includes:

When the 3D display panel 60 using the above-mentioned liquid crystal grating 601 performs vertical 3D display, an electric field is formed between the above-mentioned first grating electrode 104 and the above-mentioned second grating electrode 105, and an electric signal is applied to each of the above-mentioned row driving lines 11 at intervals, so that the liquid crystal The layer is partly transparent and partly opaque, so that the above-mentioned liquid crystal layer 103 forms a horizontal slit grating with alternate light and dark;

When the 3D display panel 60 using the above-mentioned liquid crystal grating 601 performs horizontal 3D display, an electric field is formed between the above-mentioned first grating electrode 104 and the above-mentioned second grating electrode 105, and an electric signal is applied to each of the above-mentioned column driving lines 22 at intervals, so that the liquid crystal The layer is partially light-transmitting and partially opaque, so that the above-mentioned liquid crystal layer 103 forms a vertical slit grating with alternate light and dark;

When the 3D display panel 60 using the liquid crystal grating 601 performs 2D display, no electric field is formed between the first grating electrode 104 and the second grating electrode 105 , so that the entire surface of the liquid crystal layer 103 is transparent.

In the control method of the liquid crystal grating 601 provided by the present invention, when a plurality of row driving lines 11 do not apply power signals and a plurality of column driving lines 22 do not apply power signals, the same as the row driving lines 11 and the column driving lines 22 The connected control switches 33 are all disconnected, no electric field is formed between the first grating electrode 104 and the second grating electrode 105, the liquid crystal layer 103 is transparent as a whole, and the 3D display panel 60 is in the 2D display mode; When an electric signal is applied and a plurality of column drive lines 22 are not supplied with an electric signal, the control switch 33 connected to the row drive line 11 applying the electric signal is turned on, while the row drive line 11 and the row drive line 11 without the electric signal are not connected with the electric signal. The column drive line 22 of the signal is connected and the control switch 33 is disconnected, so that the multiple rows of grating sub-electrodes 1041 arranged in the horizontal direction are powered at intervals, and an electric field is formed between the powered grating sub-electrodes 1041 and the overall transparent electrode, and the electric field acts on the liquid crystal layer At 103, the corresponding liquid crystals at the positions of the grating sub-electrodes 1041 to which electrical signals are applied are opaque, forming black stripes. The corresponding liquid crystal transmits light to form light-transmitting stripes, so that the liquid crystal layer 103 forms a plurality of light and dark stripes in the horizontal direction, and the liquid crystal deflects to form a barrier fence, thereby realizing the vertical 3D display effect of the naked eye barrier fence type. The 3D display panel 60 is in the vertical direction. 3D display mode; when a plurality of column drive lines 22 apply an electrical signal at intervals and a plurality of row drive lines 11 do not apply an electrical signal, the control switch 33 connected to the column drive line 22 that applies the electrical signal is turned on, and is not connected to The column drive line 22 of the power supply signal and the row drive line 11 of the power supply signal are connected to the control switch 33 and disconnected, so that the vertically arranged multi-column grating sub-electrodes 1041 are powered at intervals, and the power-on grating sub-electrodes 1041 are connected with the whole An electric field is formed between the transparent electrodes. When the electric field acts on the liquid crystal layer 103, the corresponding liquid crystals at the positions of the grating sub-electrodes 1041 that apply electrical signals are opaque, forming black stripes. The width of the black stripes is the same as the width of the grating sub-electrodes 1041. Similarly, the corresponding liquid crystal at the position where the grating sub-electrode 1041 is not applied with an electrical signal transmits light, forming light-transmitting stripes, so that the liquid crystal layer 103 forms a plurality of vertically alternate light and dark stripes, and the liquid crystal deflects to form a barrier fence, thereby realizing naked-eye Barrier fence type horizontal 3D display effect, the 3D display panel 60 is in the horizontal 3D display mode, so that the 3D display panel 60 can not only realize the random switching between the 2D display mode and the 3D display mode, but also realize the horizontal 3D display mode and the vertical 3D display mode random switching.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Finally, it should be noted that: the above-described embodiments are only specific implementations of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting them, and the scope of protection of the present invention is not limited thereto, although referring to the foregoing The embodiment has described the present invention in detail, and those skilled in the art should understand that any person familiar with the technical field can still modify the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention Changes can be easily imagined, or equivalent replacements can be made to some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A liquid crystal grating comprises an upper substrate and a lower substrate which are oppositely arranged, a first grating electrode formed on the upper substrate, and a second grating electrode formed on the lower substrate, wherein a liquid crystal layer is arranged between the first grating electrode and the second grating electrode; or,

the second grating electrode comprises a plurality of grating sub-electrodes arranged in an array manner, and the first grating electrode is an integral transparent electrode;

the plurality of grating sub-electrodes of each row are connected with a row driving line through a plurality of control switches, and the plurality of grating sub-electrodes of each column are connected with a column driving line through a plurality of control switches;

when the row driving lines are not powered by the signals and the column driving lines are not powered by the signals, the control switches connected with the row driving lines are disconnected, and the control switches connected with the column driving lines are also disconnected; when the electric signal is applied to the row driving line and the electric signal is not applied to the column driving line, the control switch connected with the row driving line is conducted, and the control switch connected with the column driving line is disconnected; conversely, when an electrical signal is applied to a column drive line and no electrical signal is applied to a row drive line, the control switch connected to the column drive line is turned on and the control switch connected to the row drive line is turned off.

2. The liquid crystal grating of claim 1, wherein the control switch comprises: and a thin film transistor.

3. The liquid crystal grating of claim 1, wherein the grating sub-electrodes are square in shape, and the spacing between each grating sub-electrode is equal.

4. The liquid crystal grating of claim 1, wherein the row drive lines are separated from the column drive lines by an insulating layer.

5. The liquid crystal grating of claim 1, further comprising a first alignment film layer disposed on a side of the first grating electrode facing the second grating electrode, and a second alignment film layer disposed on a side of the second grating electrode facing the first grating electrode.

6. The liquid crystal grating of claim 1, wherein the second grating electrode is made of an organic transparent conductive material and is an integral transparent electrode, the second grating electrode is used for receiving a common voltage signal and serving as an orientation film layer, and the liquid crystal grating further comprises an orientation film layer disposed on one side of the first grating electrode facing the second grating electrode; or,

the liquid crystal grating is characterized in that the first grating electrode is made of an organic transparent conductive material and is an integral transparent electrode, the first grating electrode is used for receiving a public voltage signal and serving as an orientation film layer, and the liquid crystal grating further comprises an orientation film layer arranged on one side, facing the first grating electrode, of the second grating electrode.

7. The liquid crystal grating of claim 6, wherein the organic transparent conductive material comprises one or more of: the composite material comprises a mixed material of acrylic resin and a nano silver wire, a mixed material of acrylic resin and a carbon nano tube, and a mixed material of polyimide resin and a carbon nano tube.

8. A3D display panel, comprising a 2D display screen, characterized by further comprising the liquid crystal grating according to any one of claims 1 to 7, wherein the liquid crystal grating is disposed on the light-emitting side of the 2D display screen.

9. A 3D display device comprising the 3D display panel according to claim 8.

10. A method for controlling a liquid crystal grating according to any one of claims 1 to 7, the method comprising:

when the 3D display panel applying the liquid crystal grating is used for longitudinal 3D display, an electric field is formed between the first grating electrode and the second grating electrode, an electric signal is applied to each row driving wire at intervals, a plurality of column driving wires are not electrified with signals, a control switch connected with the row driving wire applying the electric signal is conducted, and the control switch connected with the row driving wire not electrified with signals and the column driving wire not electrified with signals is disconnected, so that a plurality of rows of transversely arranged grating sub-electrodes are electrified at intervals, an electric field is formed between the electrified grating sub-electrodes and the integral transparent electrode, liquid crystal is deflected to form a barrier fence, a liquid crystal layer is partially transparent and partially opaque, and the liquid crystal layer forms a slit grating with alternate transverse light and shade;

when the 3D display panel applying the liquid crystal grating carries out transverse 3D display, an electric field is formed between the first grating electrode and the second grating electrode, an electric signal is applied to each row driving wire at intervals, the plurality of row driving wires are not powered by electric signals, the control switch connected with the row driving wires applying the electric signals is conducted, the control switch connected with the row driving wires not powered by the electric signals and the row driving wires not powered by the electric signals is disconnected, so that the plurality of rows of grating sub-electrodes which are longitudinally arranged are powered at intervals, the electric field is formed between the powered grating sub-electrodes and the integral transparent electrode, liquid crystal is deflected to form a barrier fence, the liquid crystal layer is partially transparent and partially opaque, and the liquid crystal layer forms a slit grating with longitudinal light and shade at intervals;

when the 3D display panel using the liquid crystal grating is used for 2D display, an electric field is not formed between the first grating electrode and the second grating electrode, so that the whole surface of the liquid crystal layer is transparent.

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