Liquid crystal lens module, display screen, display equipment and driving method

Abstract

The embodiment of the invention provides a liquid crystal lens module, a display screen, display equipment and a driving method. The liquid crystal lens module comprises a liquid crystal lens assembly and a driving circuit, the liquid crystal lens assembly comprises a first substrate and a second substrate which are oppositely arranged; a liquid crystal layer is arranged between the first substrate and the second substrate; a first electrode layer is arranged on one side, facing the second substrate, of the first substrate; the first electrode layer is divided into a plurality of self-capacitance electrodes which are mutually independent; a second electrode layer is arranged on one side, facing the first substrate, of the second substrate; when the liquid crystal lens assembly needs to enter a 3D display state, the driving circuit is used for applying liquid crystal driving voltage between the self-capacitance electrode and the second electrode layer; and after the liquid crystal lens assembly enters a 3D display state, the driving circuit is used for suspending the second electrode layer and providing a touch driving signal for the self-capacitance electrode. The liquid crystal lens module not only can provide 3D display and touch sensing functions at the same time, but also has the advantages of small thickness and the like.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a liquid crystal lens module, a display screen, a display device and a driving method. Background Art

[0002] Naked-eye 3D display screens are usually implemented using liquid crystal lens display technology. Specifically, a liquid crystal lens is set on the light-emitting side of the display panel. The liquid crystal lens uses the birefringence properties of liquid crystal molecules and the characteristics of liquid crystal molecules being turned by electric fields. The liquid crystal molecules are turned by electric fields to achieve the optical refraction of cylindrical lenses, thereby refracting the left-eye image and the right-eye image displayed on the display panel into the left and right eyes of the person, respectively, presenting a 3D picture in the human brain, thus achieving 3D display.

[0003] In order to meet users' strong demand for integrated products with both naked-eye 3D display and touch functions, the existing technology usually adds an additional touch function layer on the light-emitting side of the liquid crystal lens. This not only increases the cost, but also increases the thickness, which makes it more difficult to realize foldable naked-eye 3D display devices in the future. Summary of the invention

[0004] Multiple aspects of the present application provide a liquid crystal lens module, a display screen, a display device and a driving method. The liquid crystal lens module provided in the embodiments of the present application can not only provide both 3D display function and touch sensing function at the same time, but also has the advantages of thin thickness.

[0005] In a first aspect, a liquid crystal lens module is provided, comprising: a liquid crystal lens assembly and a driving circuit;

[0006] The liquid crystal lens assembly comprises: a first substrate and a second substrate arranged opposite to each other; a liquid crystal layer is arranged between the first substrate and the second substrate; a first electrode layer is arranged on a side of the first substrate facing the second substrate; the first electrode layer is divided into a plurality of mutually independent self-capacitance electrodes; the plurality of mutually independent self-capacitance electrodes are electrically connected to the drive circuit respectively; a second electrode layer is arranged on a side of the second substrate facing the first substrate; the second electrode layer is electrically connected to the drive circuit;

[0007] When the liquid crystal lens assembly needs to enter a 3D display state, the driving circuit is used to apply a liquid crystal driving voltage between the self-capacitance electrode and the second electrode layer to enable the liquid crystal lens assembly to enter a 3D display state;

[0008] After the liquid crystal lens assembly enters the 3D display state, the driving circuit is used to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

[0009] Among them, the liquid crystal driving voltage refers to the voltage required to drive the liquid crystal molecules to rotate. Driven by the liquid crystal driving voltage, the liquid crystal lens assembly is equivalent to a liquid crystal lens array capable of realizing 3D display. Specifically, after the liquid crystal lens assembly enters the 3D display state, the driving circuit simultaneously performs the operation of suspending the second electrode layer and the operation of providing a touch driving signal to each capacitor electrode, or the driving circuit first suspends the first electrode layer and then provides a touch driving signal to each capacitor electrode. In this way, it can be ensured that the voltage between each of the self-capacitance electrodes and the second electrode layer is maintained at the liquid crystal driving voltage, so that the liquid crystal lens assembly can be maintained in the 3D display state.

[0010] In the embodiment of the present application, the liquid crystal lens module has both touch sensing function and 3D display function, and the touch sensing function is realized by reusing the liquid crystal drive electrode layer (that is, the first electrode layer), which can reduce the number of film layers and reduce the thickness. In addition, after the liquid crystal lens assembly enters the 3D display state, since the second electrode layer is suspended, no matter how the potential on each capacitor electrode changes, the voltage between each self-capacitance electrode and the second electrode layer will remain as the liquid crystal drive voltage, that is, the liquid crystal lens assembly can continue to perform 3D display; in this way, when the second electrode layer is suspended, the touch drive signal applied to each capacitor electrode can realize the touch sensing function. It can be seen that the liquid crystal lens module provided in the embodiment of the present application can provide both 3D display function and touch sensing function at the same time.

[0011] In an optional implementation, when the liquid crystal lens assembly needs to enter a 2D display state, the driving circuit is used to apply a preset voltage between the self-capacitance electrode and the second electrode layer to enable the liquid crystal lens assembly to enter a 2D display state;

[0012] After the liquid crystal lens assembly enters the 2D display state, the driving circuit is used to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

[0013] Specifically, after the liquid crystal lens assembly enters the 2D display state, the driving circuit simultaneously performs the operation of suspending the second electrode layer and the operation of providing the touch driving signal to each capacitor electrode, or the driving circuit first suspends the first electrode layer and then provides the touch driving signal to each capacitor electrode. In this way, it can be ensured that the voltage between each of the self-capacitance electrodes and the second electrode layer is maintained at a preset voltage, so that the liquid crystal lens assembly can be maintained in the 2D display state.

[0014] That is to say, the liquid crystal lens assembly provided in the embodiment of the present application can provide not only 3D display but also 2D display; and can switch between the 2D display state and the 3D display state.

[0015] In an optional implementation, the liquid crystal lens assembly further includes: a basic lens array;

[0016] The basic lens array is located between the first substrate and the second substrate;

[0017] When the voltage between the self-capacitive electrode and the second electrode layer is a liquid crystal driving voltage, the liquid crystal molecules in the liquid crystal layer are deflected, and the basic lens array and the deflected liquid crystal molecules together form a lens array for realizing 3D display.

[0018] It should be noted that when the voltage between the self-capacitive electrode and the second electrode layer is a preset voltage (eg 0V), the liquid crystal molecules in the liquid crystal layer do not deflect, and the combination of the basic lens array and the non-deflected liquid crystal molecules can achieve 2D display.

[0019] In the embodiment of the present application, by adding a basic lens array to the liquid crystal lens assembly and subsequently controlling the steering of the liquid crystal molecules through an electric field, the entire liquid crystal lens assembly can be well equivalent to a lens array, thereby achieving a better 3D display effect.

[0020] In addition, by designing the structure of the basic lens array, the long axis direction of each liquid crystal molecule in the liquid crystal layer can be deflected to be perpendicular to the side of the first substrate facing the second substrate (such as Figure 8 and Fig. 9 As shown), the basic lens array and the deflected liquid crystal molecules can together form a lens array for realizing 3D display.

[0021] In this solution, 3D display can be achieved by only driving the long axis direction of each liquid crystal molecule in the liquid crystal layer to be perpendicular to the side of the first substrate facing the second substrate. In other words, it is only necessary to ensure that the electric field strength at any position in the liquid crystal layer is consistent. In this way, the structural complexity and preparation difficulty of the upper and lower electrodes of the liquid crystal layer can be reduced.

[0022] In order to reduce the blind area of ​​3D display, the basic lens array includes: a plurality of lens units; the orthographic projection of the area between the plurality of lens units on the second substrate overlaps with the orthographic projection of the gap between the plurality of independent self-capacitance electrodes on the second substrate.

[0023] In an optional implementation, the liquid crystal lens assembly further includes: a plurality of first lead wires electrically connected to the plurality of mutually independent self-capacitance electrodes in a one-to-one correspondence; the plurality of first lead wires are electrically connected to the drive circuit respectively.

[0024] Specifically, the plurality of first lead wires are electrically connected to the plurality of first pins of the driving circuit in a one-to-one correspondence.

[0025] The first lead wires and the first electrode layer are arranged in different layers or in the same layer. It should be noted that when arranged in the same layer, the gaps between the multiple independent self-capacitor electrodes will be larger because space needs to be reserved for the first lead wires.

[0026] In an optional implementation, the driving circuit includes: a touch driving unit and a liquid crystal driving unit;

[0027] The plurality of mutually independent self-capacitance electrodes are electrically connected to the touch drive unit respectively; the second electrode layer is connected to the liquid crystal drive unit;

[0028] When the liquid crystal lens assembly needs to enter a 3D display state, the touch drive unit is used to apply a first preset potential to the self-capacitance electrode; the liquid crystal drive unit is used to apply a liquid crystal drive signal to the second electrode layer to form a liquid crystal drive voltage between the self-capacitance electrode and the second electrode layer;

[0029] After the liquid crystal lens assembly enters the 3D display state, the liquid crystal driving unit is used to suspend the second electrode layer, and the touch driving unit is used to provide a touch driving signal to the self-capacitance electrode.

[0030] Specifically, the first preset potential may be 0 V or ground potential.

[0031] In an optional embodiment, when the liquid crystal lens assembly needs to enter a 2D display state, the touch drive unit is used to apply a second preset potential to the self-capacitance electrode; the liquid crystal drive unit is used to apply a third preset potential to the second electrode layer; the voltage between the second preset potential and the third preset potential is a preset voltage; after the liquid crystal lens assembly enters the 2D display state, the liquid crystal drive unit is used to suspend the second electrode layer, and the touch drive unit is used to provide a touch drive signal to the self-capacitance electrode.

[0032] The preset voltage is 0V, and the second preset potential and the third preset potential can be 0V or ground potential.

[0033] In a second aspect, the present application provides a display screen comprising: a display panel and a liquid crystal lens module as described in any one of the above items; the liquid crystal lens component in the liquid crystal lens module is arranged on the light-emitting side of the display panel.

[0034] In order to reduce the blind area of ​​3D display, the display panel includes a third substrate and a plurality of pixels arranged in an array on the third substrate; the orthographic projection of the gap between the plurality of independent self-capacitance electrodes on the third substrate overlaps with the orthographic projection of the gap between the plurality of pixels on the third substrate.

[0035] Generally, the gap width between multiple pixels is greater than the gap width between self-capacitance electrodes. Therefore, further, the orthographic projection of the gap between multiple pixels on the third substrate can completely cover the orthographic projection of the gap between multiple independent self-capacitance electrodes on the third substrate.

[0036] In a third aspect, the present application provides a display device, comprising any display screen described above.

[0037] In a fourth aspect, the present application provides a method for driving a display screen. The display screen comprises: a display panel and a liquid crystal lens module as described in any one of the above; the liquid crystal lens assembly is arranged on the light-emitting side of the display panel. The method comprises:

[0038] Determining the display state that the liquid crystal lens assembly needs to enter at present;

[0039] When the liquid crystal lens assembly needs to enter a 3D display state, controlling the driving circuit to apply a liquid crystal driving voltage between the self-capacitance electrode and the second electrode layer;

[0040] After the liquid crystal lens assembly enters the 3D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

[0041] The execution subject of the driving method provided in the embodiment of the present application may be a display device having the above-mentioned display screen, specifically, a controller of the display device.

[0042] Specifically, when the device is turned on, the display state that the liquid crystal lens assembly needs to enter can be determined. Generally, the device enters a default display state, such as a 2D display state. Alternatively, a display state switching instruction is received; and according to the display state switching instruction, the display state that the liquid crystal lens assembly needs to enter can be determined. The display state switching instruction can specifically be a voice instruction issued by a user, a touch instruction triggered by a user on a display screen, and so on.

[0043] In an optional implementation, the method further includes:

[0044] When the liquid crystal lens assembly needs to enter a 2D display state, controlling the driving circuit to apply a preset voltage between the self-capacitance electrode and the second electrode layer;

[0045] After the liquid crystal lens assembly enters the 2D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

[0046] In an optional implementation, the method further includes:

[0047] Before controlling the liquid crystal lens group to enter a desired display state, determining whether it is currently a touch control moment;

[0048] After the liquid crystal lens assembly enters the 3D display state, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode includes:

[0049] If the current moment is a touch control moment, after the liquid crystal lens assembly enters a 3D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a first frequency to the self-capacitance electrode;

[0050] If the current time is not a touch control moment, after the liquid crystal lens assembly enters a 3D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a second frequency to the self-capacitance electrode;

[0051] The first frequency is greater than the second frequency. The touch moment refers to the moment when the user is touching the display screen. The display state that the liquid crystal lens assembly needs to enter is a 2D display state or a 3D display state.

[0052] Optionally, after the liquid crystal lens assembly enters the 2D display state, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode includes:

[0053] If the current moment is a touch control moment, after the liquid crystal lens assembly enters a 2D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of the first frequency to the self-capacitance electrode;

[0054] If the current time is not a touch control moment, after the liquid crystal lens assembly enters a 2D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of the second frequency to the self-capacitance electrode.

[0055] In this embodiment, the display screen is in the touch moment before switching the display state, indicating that the user's hand is touching the display screen before switching the display state. Therefore, in order to avoid the influence of the display state switching on the smoothness of the user's touch action (for example, continuous click action and continuous sliding operation in the game), a high-frequency touch drive signal is provided to the self-capacitance electrode, which can increase the touch detection frequency of the display screen. The display screen is not in the touch moment before switching the display state, indicating that the user's hand is not touching the display screen before switching the display state. Therefore, in order to reduce sharing, a low-frequency touch drive signal is provided to each capacitance electrode to reduce the touch detection frequency of the display screen.

[0056] In order to avoid the polarization phenomenon of liquid crystal, the driving method may further include:

[0057] After the liquid crystal lens assembly enters the 3D display state, the drive circuit is controlled to apply a reversal voltage between the self-capacitance electrode and the second electrode layer at every preset time interval; the reversal voltage is opposite in polarity to the current voltage between the self-capacitance electrode and the second electrode layer; after applying the reversal voltage, the drive circuit is controlled to suspend the second electrode layer and provide a touch drive signal to the self-capacitance electrode.

[0058] It should be noted that after the reversal voltage is applied, the long axis direction of the liquid crystal molecules will quickly reverse (i.e., flip 180°). In order to ensure that the long axis direction of the liquid crystal molecules is reversed, the drive circuit is controlled to suspend the second electrode layer and provide a touch drive signal to the self-capacitance electrode. After a preset time period after the reversal voltage is applied, the drive circuit may be controlled to suspend the second electrode layer and provide a touch drive signal to the self-capacitance electrode. The duration of the preset time period can be set according to actual conditions, and the embodiment of the present application does not specifically limit this.

[0059] Similarly, in order to avoid the influence of the periodic reversal operation on the smoothness of the user's touch action, the above method may further include:

[0060] Before applying the reversal voltage, determining whether it is a touch control moment;

[0061] After applying the reverse voltage, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode comprises:

[0062] If the current moment is a touch control moment, after applying the reverse voltage, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a first frequency to the self-capacitance electrode;

[0063] If the current time is not a touch control moment, after applying the reverse voltage, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a second frequency to the self-capacitance electrode;

[0064] The first frequency is greater than the second frequency.

[0065] In an achievable solution, the driving circuit includes: a touch driving unit and a liquid crystal driving unit; the plurality of mutually independent self-capacitance electrodes are electrically connected to the touch driving unit respectively; the second electrode layer is electrically connected to the liquid crystal driving unit;

[0066] When the liquid crystal lens assembly needs to enter a 3D display state, controlling the driving circuit to apply a liquid crystal driving voltage between the self-capacitance electrode and the second electrode layer includes:

[0067] When the liquid crystal lens assembly needs to enter a 3D display state, controlling the touch drive unit to apply a first preset potential to the self-capacitance electrode and controlling the liquid crystal drive unit to apply a liquid crystal drive signal to the second electrode layer to form a liquid crystal drive voltage between the self-capacitance electrode and the second electrode layer;

[0068] After the liquid crystal lens assembly enters the 3D display state, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to each of the self-capacitance electrodes includes:

[0069] After the liquid crystal lens assembly enters the 3D display state, the liquid crystal driving unit is controlled to suspend the second electrode layer and the touch driving unit is controlled to provide a touch driving signal to the self-capacitance electrode.

[0070] Optionally, the liquid crystal driving unit may provide a liquid crystal driving signal including a positive pressure liquid crystal driving signal and a negative pressure liquid crystal driving signal.

[0071] Optionally, when the liquid crystal lens assembly needs to enter a 2D display state, controlling the driving circuit to apply a preset voltage between the self-capacitance electrode and the second electrode layer includes:

[0072] When the liquid crystal lens assembly needs to enter a 2D display state, the touch control driving unit is controlled to apply a second preset potential to the self-capacitance electrode and the liquid crystal driving unit is controlled to apply a third preset potential to the second electrode layer; a voltage between the second preset potential and the third preset potential is a preset voltage;

[0073] After the liquid crystal lens assembly enters the 2D display state, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode includes:

[0074] After the liquid crystal lens assembly enters the 2D display state, the liquid crystal driving unit is controlled to suspend the second electrode layer and the touch driving unit is controlled to provide a touch driving signal to the self-capacitance electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0076] Figure 1 A schematic diagram of the structure of a display screen provided for an exemplary embodiment of the present application;

[0077] Figure 2a A schematic diagram of the structure of multiple independent self-capacitance electrodes provided by an exemplary embodiment of the present application;

[0078] Figure 2b A schematic structural diagram of a second electrode layer provided for an exemplary embodiment of the present application;

[0079] Figure 3 A schematic diagram of the lead-out line arrangement provided for an exemplary embodiment of the present application;

[0080] Figure 4 A schematic diagram of lead-out line arrangement provided for another exemplary embodiment of the present application;

[0081] Figure 5 A schematic structural diagram of a liquid crystal lens module provided by an exemplary embodiment of the present application;

[0082] Figure 6 A first principle schematic diagram of a liquid crystal lens assembly provided for an exemplary embodiment of the present application;

[0083] Figure 7 A second principle schematic diagram of a liquid crystal lens assembly is provided for another exemplary embodiment of the present application;

[0084] Figure 8 A schematic diagram of a state of a liquid crystal lens assembly provided for an exemplary embodiment of the present application;

[0085] Fig. 9 A state schematic diagram of a liquid crystal lens assembly is provided for another exemplary embodiment of the present application;

[0086] Fig.10 A schematic diagram of a driving method provided by an exemplary embodiment of the present application;

[0087] Fig.11 A 3D display principle diagram provided for an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two.

[0089] In the following, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0090] The present application provides a display device, which includes: a housing and Figure 1 The display screen 1 shown. The display screen 1 is used to display images, and the housing is used to support, fix and protect the display screen. The embodiment of the present application does not limit the type of display device. For example, it can be a mobile phone, a television, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device (for example, a watch, a bracelet, a smart helmet, etc.), a virtual reality (VR) device, an augmented reality (AR) device, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0091] The following will be combined Figure 1 The display screen 1 provided in the embodiment of the present application is introduced. Figure 1 As shown, the display screen 1 includes: a display panel 10, a liquid crystal lens assembly 20 arranged on the light-emitting side of the display panel 10, and a driving circuit 200 (such as Figure 5 shown).

[0092] In practical applications, the liquid crystal lens assembly 20 and the driving circuit 200 can be regarded as a module. For example, the liquid crystal lens module 100 (eg Figure 5 shown).

[0093] Among them, the display panel 10 includes: a third substrate 101 and a plurality of pixel units 102 arranged in an array on the third substrate 101. The display panel 10 may be an LCD (Liquid Crystal Display) display panel or an OLED (Organic Light-Emitting Diode). It should be noted that when the display screen 1 is in a 3D display state, at a certain moment, a part of the plurality of pixel units is used to display the left eye image, and another part of the pixel units is used to display the right eye image. Among them, the third substrate may include: a glass substrate or a flexible substrate. The material of the flexible substrate can be selected according to actual needs, and the embodiment of the present application does not specifically limit this. In one example, the flexible substrate may be: a colorless polyimide (CPI) substrate. Using a flexible substrate, a foldable display screen can be realized.

[0094] The liquid crystal lens assembly 20 comprises: a first substrate 201 and a second substrate 202 arranged opposite to each other; a liquid crystal layer 203 is arranged between the first substrate 201 and the second substrate 202; the liquid crystal layer 203 contains liquid crystal molecules 2031; a first electrode layer 204 is arranged on the side of the first substrate 201 facing the second substrate 202; the first electrode layer 204 is divided into a plurality of mutually independent self-capacitance electrodes 2041 (such as Figure 2a As shown); a second electrode layer 205 is provided on a side of the second substrate 202 facing the first substrate 201.

[0095] The materials of the first substrate and the second substrate may be transparent materials such as glass, COP (Cyclo Olefin Polymer), PET (Polyethylene terephthalate), etc.

[0096] The shape of the self-capacitance electrode 2041 can be any shape, and the embodiment of the present application does not specifically limit this. Exemplarily, the shape of the self-capacitance electrode 2041 can be a rectangle, a polygon, or various special shapes. The area size of the self-capacitance electrode 2041 depends on the finger touch accuracy (such as 4mm*4mm).

[0097] The self-capacitive electrode 2041 may be a transparent conductive electrode or a metal grid. For example, the material of the transparent conductive electrode may be ITO (Indium Tin Oxide).

[0098] The orthographic projection of each capacitor electrode 2041 on the third substrate 101 covers a plurality of pixels.

[0099] In order to avoid or partially avoid the problem of 3D display blind areas, the orthographic projection of the gaps between the self-capacitance electrodes 2041 in the first electrode layer 204 on the third substrate 101 overlaps with the orthographic projection of the gaps between the plurality of pixels on the third substrate. Furthermore, the orthographic projection of the gaps between the pixels on the third substrate completely covers the orthographic projection of the gaps between the self-capacitance electrodes 2041 on the third substrate 101.

[0100] In order to simplify the preparation process, Figure 2b As shown, the second electrode layer 205 can be a non-hollowed-out whole-surface structure. Of course, in practical applications, the specific shape of the second electrode layer 205 can be designed as needed, and the embodiment of the present application does not specifically limit this. Exemplarily, the second electrode layer 205 may include: a plurality of strip-shaped electrodes. It should be noted that when there is a gap between the electrodes in the second electrode layer, in order to avoid or partially avoid the problem of 3D display blind areas, the orthographic projection of the gap on the third substrate 101 also overlaps with the gap between the pixels on the third substrate.

[0101] like Figure 3 or Figure 4 As shown, the driving circuit 200 further includes: a touch driving unit 30 and a plurality of first lead wires 40 electrically connected to the plurality of self-capacitance electrodes 2041 in the first electrode layer 204 in a one-to-one correspondence; the plurality of first lead wires 40 are electrically connected to the touch driving unit 30. Specifically, the plurality of first lead wires are connected to the plurality of first pins 3014a of the touch driving unit 30 in a one-to-one correspondence. It should be noted that Figure 3 and Figure 4 The self-capacitance electrodes in the first electrode layer are shown for exemplary purposes only. In fact, each self-capacitance electrode in the first electrode layer is connected to the touch control driving unit via a first lead line.

[0102] In practical applications, the plurality of first lead wires 40 and the first electrode layer 204 may be prepared in the same layer or in different layers, which is not specifically limited in the embodiment of the present application.

[0103] For example, Figure 3 As shown, the first lead wires 40 and the first electrode layer 204 are arranged in different layers, and an insulating layer is arranged between the first electrode layer 204 and the layer where the first lead wires 40 are located. Usually, the thickness of the insulating layer is very small. For example, Figure 4 As shown, a plurality of first lead wires 40 are arranged in the same layer as the first electrode layer 204, and the first lead wires 40 are located in the gaps between the self-capacitance electrodes in the first electrode layer 204. It should be noted that when arranged in the same layer, since the first lead wires need to occupy a certain space, that is, the gaps between the self-capacitance electrodes need to be set larger, this will increase the touch blind area.

[0104] like Figure 5As shown, the above-mentioned driving circuit 200 includes: a liquid crystal driving unit 50 and a second lead 60 electrically connected to the second electrode layer 205; the second lead 60 is electrically connected to the liquid crystal driving unit 50. Specifically, the second lead 60 is electrically connected to the second pin 5015a of the liquid crystal driving unit 50. It should be noted that the liquid crystal driving unit 50 needs to be used in conjunction with the touch driving unit 30 to realize the liquid crystal driving function. The liquid crystal driving function essentially refers to the function of driving the liquid crystal molecules to deflect. Specifically, the liquid crystal driving unit 50 and the touch driving unit 30 can control the steering of the liquid crystal molecules by controlling the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer, thereby realizing 2D display or 3D display (achieving switching between 2D display and 3D display).

[0105] like Figure 6 As shown in FIG. 1 , when the liquid crystal driving unit 50 and the touch driving unit 30 control the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer 205 to be 0V (i.e., the above-mentioned preset voltage), the long axis direction of the liquid crystal molecules is parallel to the side of the first substrate facing the second substrate (or the display surface of the display screen 1) (i.e., no deflection occurs). At this time, Figure 6 As shown, the liquid crystal lens assembly does not perform optical refraction on the light emitted by the pixel, that is, the display screen 1 is in a 2D display state.

[0106] like Figure 7 As shown, when the liquid crystal driving unit 50 and the touch driving unit 30 control the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer to be +U or -U, the long axis direction of the liquid crystal molecules is perpendicular to the display surface of the display screen 1. Wherein, +U, -U is also the above-mentioned liquid crystal driving voltage.

[0107] At this time, if Figure 7 As shown, the liquid crystal lens assembly plays an optical refraction role of a cylindrical lens on the light emitted by the pixel, that is, the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer 205 causes the liquid crystal molecules 2031 in the liquid crystal layer 203 to deflect, and the liquid crystal lens assembly after the deflection of the liquid crystal molecules 2031 is equivalent to a lens array, specifically equivalent to a micro lens array.

[0108] Wherein, U is a positive number, and the value of U depends on the voltage required for flipping the liquid crystal molecules of the liquid crystal layer, for example, 5V.

[0109] It should be noted that, in practical applications, in order to minimize the polarization phenomenon of the liquid crystal, the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer can be periodically converted between positive and negative polarities. Exemplarily, in the last preset cycle, the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer 205 is +U; in the next preset cycle, the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer 205 is -U. The duration of the preset cycle can be set according to actual needs, and the embodiment of the present application does not specifically limit this, and it can be one display frame or multiple display frames.

[0110] When the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer 205 is +U and when the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer 205 is -U, the long axis direction of the liquid crystal molecules is perpendicular to the display surface of the display screen 1 (or the side of the first substrate facing the second substrate), but the long axis direction is exactly opposite, such as Figure 8 and Fig. 9 shown.

[0111] The following will be combined Figure 5 The driving method in the embodiment of the present application is introduced.

[0112] In one example, if Figure 5 As shown, the touch drive unit 30 includes: a first multiplexer switch 301a; the first multiplexer switch 301a includes: a touch drive signal input terminal 3011a, an NC (NOT CONNECTED) terminal 3012a, a GND (Ground) terminal 3013a and a first pin 3014a; the first pin 3014a is electrically connected to the corresponding first lead wire 40.

[0113] The touch driving signal input terminal 3011 a is used to input a touch driving signal, and the waveform of the touch driving signal may be a square wave, a sine wave, etc.

[0114] There are multiple first multiplexer switches 301a in the touch drive unit 30, and the multiple first multiplexer switches 301a correspond one-to-one to the multiple first lead wires 40. The first pins in different first multiplexer switches are electrically connected to different first lead wires.

[0115] The liquid crystal driving unit 50 includes: a second multiplexer switch 501a; the second multiplexer switch 501a includes: a positive potential input terminal 5011a, a negative potential input terminal 5012a, an NC (NOT CONNECTED) terminal 5013a, a GND terminal 5014a and a second pin 5015a; the second pin 5015a is electrically connected to the second lead line 60.

[0116] Among them, the positive potential input terminal 5011a is used to input a positive polarity liquid crystal driving signal, and its potential can be +U by way of example; the negative potential input terminal 5012a is used to input a negative polarity liquid crystal driving signal, and its potential can be -U by way of example.

[0117] When the display screen 1 of the electronic device needs to enter the 2D display state, the electronic device can perform the following steps through its internal controller (eg, CPU):

[0118] Step 1: Control each first multiplexer switch 301a to connect its output terminal 3014a to the GND terminal 3013; control the second multiplexer switch 501a to connect its output terminal 3014a to the GND terminal 5015a.

[0119] In order to shorten the time taken for display state switching, the two steps of "controlling each first multiplexer 301a" and "controlling the second multiplexer 501a" can be performed simultaneously.

[0120] Through step 1, the voltage between the self-capacitive electrode 2041 and the second electrode layer 205 can be made 0V, thereby realizing 2D display.

[0121] Step 2: Control the second multiplexer switch 501a to connect the output terminal 5015a thereof to the NC terminal 5013a; control the first multiplexer switch 301a to connect the output terminal 3014a thereof to the touch drive signal input terminal 3011a.

[0122] In order to ensure that the voltage between the self-capacitor electrode 2041 and the second electrode layer 205 is maintained at 0V, the step of "controlling the second multiplexer 501a" is either performed simultaneously with the step of "controlling the first multiplexer 301a" or performed before the step of "controlling the first multiplexer 301a".

[0123] After the above step 2, in the 2D display state, the display screen 1 can provide a touch function. At this time, due to the capacitance characteristics, the potential signal waveform on the self-capacitance electrode 2041 and the potential signal waveform on the second electrode layer 205 are consistent with the potential signal waveform on the touch drive signal input terminal 3011a (that is, the touch drive signal waveform).

[0124] It should be noted that the touch function provided in the embodiment of the present application is a touch detection implemented by the principle of self-capacitance. Specifically, a plurality of self-capacitance electrodes are arranged in the same layer and insulated from each other in the touch screen by the principle of self-capacitance. When the human body does not touch the screen, the self-capacitance borne by each capacitance electrode is a fixed value. When the human body touches the screen, the self-capacitance borne by the corresponding self-capacitance electrode is a fixed value superimposed on the human body capacitance. The touch drive unit can determine the touch position by detecting the change in the capacitance value of each capacitance electrode at the touch moment.

[0125] When the display screen 1 of the electronic device needs to enter the 3D display state, the electronic device can perform the following steps through its internal controller:

[0126] Step 3: Control each first multiplexer switch 301a to connect its output terminal 3014a to the GND terminal 3013a; control the second multiplexer switch 501a to connect its output terminal 5015a to the positive potential input terminal 5011a or the negative potential input terminal 5012a.

[0127] In order to shorten the time taken for display state switching, the two steps of "controlling each first multiplexer 301a" and "controlling the second multiplexer 501a" can be performed simultaneously.

[0128] Through step 3, the voltage between the self-capacitive electrode 2041 and the second electrode layer 205a can be made +U or -U, thereby realizing 3D display.

[0129] Step 4: Control the second multiplexer switch 501a to connect the output terminal 5015a thereof to the NC terminal 5013a; control the first multiplexer switch 301a to connect the output terminal 3014a thereof to the touch drive signal input terminal 3011a.

[0130] In order to ensure that the voltage between the self-capacitance electrode 2041a and the second electrode layer 205 is maintained at +U or -U, the step of "controlling the second multiplexer 501a" is either performed simultaneously with the step of "controlling the first multiplexer 301a" or performed before the step of "controlling the first multiplexer 301a".

[0131] In the 3D display state, the display screen 1 can provide a touch function. At this time, due to the capacitance characteristics, the potential signal waveform on the self-capacitance electrode 2041 and the potential signal waveform on the second electrode layer 205 are consistent with the potential signal waveform on the touch drive signal input terminal 3011a (that is, the touch drive signal waveform).

[0132] In order to avoid polarization of liquid crystal molecules as much as possible, in the 3D display state, the above steps 3 and 4 can be repeated periodically (i.e., every preset time interval) (i.e., the polarity of the liquid crystal driving voltage is periodically changed); and, in the i-th execution of step 3, the second multiplexer 501a is controlled to connect the output terminal 5015a thereof with the positive potential input terminal 5011a; in the i+1-th execution of step 3, the second multiplexer 501a is controlled to connect the output terminal 5015a thereof with the negative potential input terminal 5012a. Wherein, i is an integer greater than or equal to 1; and the time between the i-th execution time and the i-+1-th execution time is the above-mentioned preset time interval. In order to avoid or partially avoid the influence of the polarity switching of the liquid crystal driving voltage on the user's touch smoothness, before each repetition of steps 3 and 4, it can be detected whether the current moment is a touch moment; if the current moment is a touch moment, execute steps 3 and 4 and control the touch driving signal input terminal 3011a to input a high-frequency (that is, the first frequency) touch driving signal; if the current moment is not a touch moment, execute steps 3 and 4 and control the touch driving signal input terminal 3011a to input a low-frequency (second frequency) touch driving signal.

[0133] The touch moment can be understood as the moment when there is a touch action. The touch driving unit 30 applies a high-frequency touch driving signal to detect whether there is a touch action at a high frequency, and the power consumption of the device is relatively large. The touch driving unit 30 applies a low-frequency touch driving signal to detect whether there is a touch action at a low frequency, and the power consumption of the device is relatively small.

[0134] In practical applications, in order to avoid or partially avoid the influence of the switching of the display state on the user's touch smoothness, it is possible to detect whether the current state is in the touch moment before the display state is switched. If the current state is in the touch moment, after the display state is switched, the touch driving unit 30 applies a high-frequency (i.e., first-frequency) touch driving signal; if the current state is not in the touch moment, after the display state is switched, the touch driving unit 30 applies a low-frequency (i.e., second-frequency) touch driving signal.

[0135] The following will be combined Figure 5 and Fig.10 A driving method provided in an embodiment of the present application is introduced. The driving method may be performed by an electronic device.

[0136] like Fig.10 As shown, the method comprises the following steps:

[0137] 1101. Determine the display state to be entered.

[0138] If it is determined that the display state to be entered is the 2D display state, execute 1102 ; otherwise, execute 1107 .

[0139] 1102. Determine whether the current moment is a touch moment.

[0140] If it is determined that the current moment is a touch moment, execute 1103 and 1104; otherwise, execute 1105 and 1106.

[0141] 1103. Control each first multiplexer to connect its output end to the GND end; control the second multiplexer to connect its output end to the GND end.

[0142] 1104. Control the second multiplexer to connect its output terminal to the NC terminal; control the first multiplexer to connect its output terminal to the touch drive signal input terminal; and control the touch drive signal input terminal to input a touch drive signal of a first frequency.

[0143] Its output terminal is connected to the NC terminal, which means that the output terminal is suspended, that is, the second electrode layer is suspended.

[0144] 1105. Control each first multiplexer switch to connect its output end to the GND end; control the second multiplexer switch to connect its output end to the GND end.

[0145] 1106. Control the second multiplexer to connect its output terminal to the NC terminal; control the first multiplexer to connect its output terminal to the touch drive signal input terminal; and control the touch drive signal input terminal to input a touch drive signal of a second frequency.

[0146] 1107. Determine whether the current moment is a touch moment.

[0147] If it is determined that the current moment is a touch moment, execute 1108 and 1109; otherwise, execute 1110 and 1111.

[0148] 1108. Control each first multiplexer switch to connect its output terminal to the GND terminal; control the second multiplexer switch to connect its output terminal to the positive potential input terminal or the negative potential input terminal.

[0149] 1109. Control the second multiplexer to connect its output terminal to the NC terminal; control the first multiplexer to connect its output terminal to the touch drive signal input terminal; and control the touch drive signal input terminal to input a touch drive signal of a first frequency.

[0150] 1110. Control each first multiplexer switch to connect its output terminal to the GND terminal; control the second multiplexer switch to connect its output terminal to the positive potential input terminal or the negative potential input terminal.

[0151] 1111. Control the second multiplexer to connect its output end to the NC end; control the first multiplexer to connect its output end to the touch drive signal input end; and control the touch drive signal input end to input a touch drive signal of a second frequency.

[0152] In the embodiment of the present application, the controller in the electronic device can control the first multiplexer switch by controlling the touch drive unit 30 ; and can control the second multiplexer switch by controlling the liquid crystal drive unit 50 .

[0153] In practical applications, the internal structure of the driving circuit and its driving method can be set according to actual needs, and only the following conditions need to be met: when the display screen needs to enter a 2D display state, the voltage between each capacitor electrode 2041 and the second electrode layer 205 can be configured to 0V first, and after the voltage is configured to 0V, the second electrode layer 205 can be left vacant, and a touch driving signal can be applied to each capacitor electrode 2041; when the display screen needs to enter a 3D display state, the voltage between each capacitor electrode 2041 and the second electrode layer 205 can be configured to +U or -U first, and after the voltage is configured to +U or -U, the second electrode layer 205 can be left vacant, and a touch driving signal can be applied to each capacitor electrode 2041.

[0154] It should be noted that when the liquid crystal lens assembly is in a 2D display state or a 3D display state, after the touch drive unit controls the touch drive signal input end to input a touch drive signal of a first frequency, if no touch operation is detected within a preset time period, the touch drive unit controls the touch drive signal input end to input a touch drive signal of a second frequency to reduce power consumption; when the liquid crystal lens assembly is in a 2D display state or a 3D display state, after the touch drive unit controls the touch drive signal input end to input a touch drive signal of a second frequency, if a touch operation is detected, the touch drive signal input end is controlled to input a touch drive signal of a first frequency to ensure touch smoothness.

[0155] Alternatively, if Figure 1 As shown, the liquid crystal lens assembly 20 may further include: a basic lens array 206 (specifically, a basic micro lens array). The basic lens array 206 includes a plurality of basic lens units 2061 .

[0156] The basic lens array 206 may be disposed between the second electrode layer 205 and the liquid crystal layer 203 (eg Figure 1 When the basic lens array 206 is disposed between the second substrate 202 and the second electrode layer 205 , the second electrode layer 205 covers the basic lens array 206 .

[0157] The orthographic projection of the connection between the basic lens units 2061 in the basic lens array 206 on the third substrate 101 overlaps with the gap between the pixels on the third substrate 101, which can reduce the 3D display blind area. In addition, the orthographic projection of the connection between the basic lens units 2061 in the basic lens array 206 on the third substrate 101 can also overlap with the orthographic projection of the gap between the self-capacitance electrodes on the third substrate 101.

[0158] In the embodiment of the present application, by adding a basic lens array to the liquid crystal lens assembly 20 and subsequently controlling the steering of the liquid crystal molecules through an electric field, the entire liquid crystal lens assembly can be well equivalent to a lens array, thereby achieving a better 3D display effect.

[0159] In practical applications, the structure of the basic lens array can be designed so that the long axis direction of each liquid crystal molecule in the liquid crystal layer is deflected to be perpendicular to the side of the first substrate facing the second substrate (such as Figure 8 and Fig. 9 As shown), the basic lens array and the deflected liquid crystal molecules can together form a lens array for realizing 3D display.

[0160] In this solution, 3D display can be achieved by only driving the long axis direction of each liquid crystal molecule in the liquid crystal layer to be perpendicular to the side of the first substrate facing the second substrate. In other words, it is only necessary to ensure that the electric field strength at any position in the liquid crystal layer is consistent. In this way, the structural complexity and preparation difficulty of the upper and lower electrodes of the liquid crystal layer can be reduced.

[0161] The following will be combined Fig.11 The working principle of the display screen 1 provided in the embodiment of the present application when working in a 3D display state is introduced. Fig.11 As shown, a portion of the pixel units (i.e. Fig.11 The left eye pixels in the image are used to display the left eye image, and the other part of the pixel units (i.e. Fig.11 The right eye pixel in the liquid crystal lens assembly 20 is used to display the right eye image. When the voltage between the self-capacitance electrode 2041 in the first electrode layer 204 and the second electrode layer in the liquid crystal lens assembly 20 is +U or -U, the light emitted by the left eye pixel can only be refracted into the user's left eye visible area; the light emitted by the right eye pixel can only be refracted into the user's right eye visible area, thereby forming a 3D picture in the user's brain.

[0162] The present application also provides a liquid crystal lens module. Figure 5As shown, the liquid crystal lens module 100 includes: a liquid crystal lens component 20 and a driving circuit 200; the liquid crystal lens component 20 includes: a first substrate 201 and a second substrate 202 arranged opposite to each other; a liquid crystal layer 203 is provided between the first substrate 201 and the second substrate 202; the liquid crystal layer 203 contains liquid crystal molecules 2031; a first electrode layer 204 is provided on the side of the first substrate 201 facing the second substrate 202; the first electrode layer 204 is divided into a plurality of mutually independent self-capacitance electrodes 2041 (as shown in FIG. 2); the plurality of mutually independent self-capacitance electrodes are electrically connected to the driving circuit respectively; a second electrode layer 205 is provided on the side of the second substrate 202 facing the first substrate 201; the second electrode layer 205 is electrically connected to the driving circuit 200.

[0163] The liquid crystal lens assembly 20 has two display states: 2D display state and 3D display state. The specific structure and technical effects of the liquid crystal lens module can refer to the corresponding contents of the above embodiments, which will not be repeated here.

[0164] In some of the processes described in the above embodiments and the accompanying drawings, multiple operations that appear in a specific order are included, but it should be clearly understood that these operations may not be executed in the order in which they appear in this article or executed in parallel, and the sequence numbers of the operations, such as 1101, 1102, etc., are only used to distinguish between different operations, and the sequence numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations may be executed in sequence or in parallel. It should be noted that the descriptions of "first", "second", etc. in this article are used to distinguish different messages, devices, modules, etc., do not represent the order of precedence, and do not limit the "first" and "second" to be different types.

[0165] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity or device including the element.

[0166] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A liquid crystal lens module, characterized in that: include: Liquid crystal lens assembly and driving circuit; The liquid crystal lens assembly comprises: a first substrate and a second substrate arranged opposite to each other; a liquid crystal layer is arranged between the first substrate and the second substrate; a first electrode layer is arranged on a side of the first substrate facing the second substrate; the first electrode layer is divided into a plurality of mutually independent self-capacitance electrodes; the plurality of mutually independent self-capacitance electrodes are electrically connected to the drive circuit respectively; a second electrode layer is arranged on a side of the second substrate facing the first substrate; the second electrode layer is electrically connected to the drive circuit; When the liquid crystal lens assembly needs to enter a 3D display state, the driving circuit is used to apply a liquid crystal driving voltage between the self-capacitance electrode and the second electrode layer; After the liquid crystal lens assembly enters the 3D display state, the driving circuit is used to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

2. The liquid crystal lens module according to claim 1, characterized in that: When the liquid crystal lens assembly needs to enter a 2D display state, the driving circuit is used to apply a preset voltage between the self-capacitance electrode and the second electrode layer; After the liquid crystal lens assembly enters the 2D display state, the driving circuit is used to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

3. The liquid crystal lens module according to claim 1, characterized in that: The liquid crystal lens assembly further comprises: a basic lens array; The basic lens array is located between the first substrate and the second substrate; When the voltage between the self-capacitive electrode and the second electrode layer is a liquid crystal driving voltage, the liquid crystal molecules in the liquid crystal layer are deflected, and the basic lens array and the deflected liquid crystal molecules together form a lens array for realizing 3D display.

4. The liquid crystal lens module according to claim 3, characterized in that: The basic lens array comprises: a plurality of lens units; The orthographic projection of the area between the plurality of lens units on the second substrate overlaps with the orthographic projection of the gap between the plurality of mutually independent self-capacitance electrodes on the second substrate.

5. The liquid crystal lens module according to any one of claims 1 to 4, characterized in that: The liquid crystal lens assembly further includes: a plurality of first lead wires electrically connected to the plurality of mutually independent self-capacitance electrodes in a one-to-one correspondence; The plurality of first lead wires are electrically connected to the driving circuit respectively.

6. The liquid crystal lens module according to claim 5, characterized in that: The plurality of first lead wires are arranged in a different layer or in the same layer as the first electrode layer.

7. The liquid crystal lens module according to any one of claims 1 to 4, characterized in that: The driving circuit comprises: a touch driving unit and a liquid crystal driving unit; The plurality of mutually independent self-capacitance electrodes are electrically connected to the touch drive unit respectively; the second electrode layer is connected to the liquid crystal drive unit; When the liquid crystal lens assembly needs to enter a 3D display state, the touch drive unit is used to apply a first preset potential to the self-capacitance electrode; the liquid crystal drive unit is used to apply a liquid crystal drive signal to the second electrode layer to form a liquid crystal drive voltage between the self-capacitance electrode and the second electrode layer; After the liquid crystal lens assembly enters the 3D display state, the liquid crystal driving unit is used to suspend the second electrode layer, and the touch driving unit is used to provide a touch driving signal to the self-capacitance electrode.

8. The liquid crystal lens module according to claim 7, characterized in that: When the liquid crystal lens assembly needs to enter a 2D display state, the touch drive unit is used to apply a second preset potential to the self-capacitance electrode; the liquid crystal drive unit is used to apply a third preset potential to the second electrode layer; The voltage between the second preset potential and the third preset potential is a preset voltage; After the liquid crystal lens assembly enters the 2D display state, the liquid crystal driving unit is used to suspend the second electrode layer, and the touch driving unit is used to provide a touch driving signal to the self-capacitance electrode.

9. A display screen, characterized in that: include: A display panel and a liquid crystal lens module as claimed in any one of claims 1 to 8; The liquid crystal lens assembly in the liquid crystal lens module is arranged on the light-emitting side of the display panel.

10. The display screen according to claim 9, characterized in that: The display panel includes a third substrate and a plurality of pixels arrayed on the third substrate; The orthographic projections of the gaps between the multiple independent self-capacitance electrodes on the third substrate overlap with the orthographic projections of the gaps between the multiple pixels on the third substrate.

11. A display device, characterized in that: include: The display screen according to claim 9 or 10.

12. A method for driving a display screen, characterized in that: The display screen comprises: a display panel and a liquid crystal lens module according to any one of claims 1 to 8; the liquid crystal lens assembly is arranged on the light-emitting side of the display panel; Determining the display state that the liquid crystal lens assembly needs to enter at present; When the liquid crystal lens assembly needs to enter a 3D display state, controlling the driving circuit to apply a liquid crystal driving voltage between each of the self-capacitance electrodes and the second electrode layer; After the liquid crystal lens assembly enters the 3D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch driving signal to each of the self-capacitance electrodes.

13. The method according to claim 12, characterized in that Also includes: When the liquid crystal lens assembly needs to enter a 2D display state, controlling the driving circuit to apply a preset voltage between the self-capacitance electrode and the second electrode layer; After the liquid crystal lens assembly enters the 2D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

14. The method according to claim 13, characterized in that Also includes: Before controlling the liquid crystal lens group to enter a desired display state, determining whether it is currently a touch control moment; After the liquid crystal lens assembly enters the 3D display state, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode includes: If the current moment is a touch control moment, after the liquid crystal lens assembly enters a 3D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a first frequency to the self-capacitance electrode; If the current time is not a touch control moment, after the liquid crystal lens assembly enters a 3D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a second frequency to the self-capacitance electrode; The first frequency is greater than the second frequency.

15. The method according to claim 14, characterized in that After the liquid crystal lens assembly enters the 2D display state, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode includes: If the current moment is a touch control moment, after the liquid crystal lens assembly enters a 2D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of the first frequency to the self-capacitance electrode; If the current time is not a touch control moment, after the liquid crystal lens assembly enters a 2D display state, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of the second frequency to the self-capacitance electrode.

16. The method according to any one of claims 12 to 15, characterized in that Also includes: After the liquid crystal lens assembly enters the 3D display state, the driving circuit is controlled to apply a reverse voltage between the self-capacitance electrode and the second electrode layer at every preset time interval; the reverse voltage has a polarity opposite to the current voltage between the self-capacitance electrode and the second electrode layer; After the reverse voltage is applied, the driving circuit is controlled to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode.

17. The method according to claim 16, characterized in that Also includes: Before applying the reversal voltage, determining whether it is a touch control moment; After applying the reverse voltage, controlling the driving circuit to suspend the second electrode layer and provide a touch driving signal to the self-capacitance electrode comprises: If the current moment is a touch control moment, after applying the reverse voltage, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a first frequency to the self-capacitance electrode; If the current time is not a touch control moment, after applying the reverse voltage, the driving circuit is controlled to suspend the second electrode layer and provide a touch control driving signal of a second frequency to the self-capacitance electrode; The first frequency is greater than the second frequency.

18. The method according to any one of claims 12 to 15, characterized in that Determining the display state that the liquid crystal lens assembly needs to enter at present includes: Receive a display state switching instruction; According to the display state switching instruction, the display state that the liquid crystal lens assembly needs to enter is determined.

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