Liquid crystal lens, array, electronic product and driving method with adjustable optical power

Abstract

The application belongs to the technical field of liquid crystal optics, and particularly relates to a liquid crystal lens with adjustable optical power, an array, an electronic product and a driving method. The liquid crystal lens with adjustable optical power comprises a first transparent substrate, a first electrode layer, a first orientation layer, a liquid crystal layer, a second orientation layer, a second electrode layer and a second transparent substrate which are sequentially stacked. The first electrode layer and the second electrode layer each comprise an electrode unit. The electrode unit comprises a conductive wire and a plurality of lead-out wires. The conductive wire comprises a plurality of subparts arranged along a preset direction of the electrode unit. The subpart comprises a plurality of extension wires, a first connecting wire and a second connecting wire. Adjacent two extension wires are connected by the first connecting wire or the second connecting wire. The plurality of extension wires are sequentially arranged along the preset direction of the electrode unit. The application can improve the utilization rate of liquid crystal materials.

Description

Technical Field

[0001] This invention belongs to the field of liquid crystal optics technology, specifically a liquid crystal lens, array, electronic product, and driving method with adjustable optical power. Background Technology

[0002] Liquid crystal lenses (LCDs) are increasingly widely used due to their electrically controlled focusing capabilities. To apply LCDs to different scenarios, precise control of the potential distribution of the liquid crystal layer is often required. Since the phase of the liquid crystal material responds linearly to the applied voltage within a certain voltage range, this range is called the linear response range or the linear operating range of the liquid crystal. To facilitate precise control of the potential distribution of the liquid crystal layer, existing technologies have proposed controlling the voltage driving the LCD lens based on the range of the linear response range. For example, in patent CN114185222A, the minimum and maximum voltages driving the liquid crystal device are set within the linear operating range of the liquid crystal to drive the device. Figure 1 As shown in the response curve of the liquid crystal material, although selecting the driving voltage within the linear response range can conveniently and accurately drive the liquid crystal lens, the voltage range of the linear response range is small, while the voltage range of the nonlinear response range accounts for a larger proportion. This results in insufficient optical power of the designed liquid crystal device, which greatly limits the application range of the liquid crystal lens. Summary of the Invention

[0003] In view of this, the present invention provides an adjustable optical power liquid crystal lens, array, electronic product, and driving method to solve the technical problem that the optical power of existing adjustable optical power liquid crystal lenses is insufficient due to the small linear response range of the liquid crystal material.

[0004] The technical solution adopted in this invention is:

[0005] In a first aspect, the present invention provides a liquid crystal lens with adjustable optical power, comprising a first transparent substrate, a first electrode layer, a first alignment layer, a liquid crystal layer, a second alignment layer, a second electrode layer, and a second transparent substrate stacked sequentially.

[0006] Both the first electrode layer and the second electrode layer include electrode units;

[0007] The electrode unit includes conductive wires and multiple lead wires. The conductive wires include multiple sub-parts arranged along a preset direction of the electrode unit. Each sub-part includes a first position and a second position. The first position and the second position are different. The preset direction of the electrode unit of the first electrode layer is perpendicular to the preset direction of the electrode unit of the second electrode layer.

[0008] The first position of the sub-part is used to receive a first driving voltage, and the second position is used to receive a second driving voltage. The portion of the sub-part between the first and second positions has the same width. One end of the lead wire is connected to the conductive wire, and the other end is suspended. The lead wire is led out from the position between the first and second positions of the sub-part. The position where the lead wire is connected to the conductive wire is the lead-out position. The lead-out position is located between the first and second positions of the sub-part, and at least two lead-out positions are different. In at least one preset region of the electrode unit, each lead wire is parallel to the others.

[0009] The sub-section includes multiple extension lines, a first connecting line, and a second connecting line. Adjacent extension lines are connected by the first connecting line or the second connecting line. The multiple extension lines are arranged sequentially along a preset direction of the electrode unit. The extension lines extend from a starting position to a position where they are connected to the first connecting line. The lead-out position is set at the position where the extension line is connected to the first connecting line. The starting position of the extension line is connected to the second connecting line.

[0010] Let x be the distance between the origin of each extension of the conductive line in the predetermined direction of the electrode unit and the point where the extensions originate. Then the length of the extension is f(x), where f(x) is a broken line composed of multiple straight line segments, and the endpoint of each straight line segment of f(x) lies on g(x). C is a constant. The origin position represents the rate of change of the phase of the liquid crystal material with voltage, and the origin position is the first position of one of the sub-parts.

[0011] Preferably, the conductive line comprises n sub-sections, which are located on the same side of the origin in a predetermined direction of the electrode unit. Let the first driving voltage of the i-th sub-section be Vu. i The second driving voltage is Vw i C / g(x) is divided into n segments, where the driving voltage at the starting position of the i-th segment is Vs. i The driving voltage corresponding to the endpoint position is Ve. i The first and second driving voltages applied to the n sub-units satisfy:

[0012] |Vw i -Vu i |≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n , where n is an integer greater than or equal to 2, and 2≤i≤n.

[0013] Preferably, the lead wire includes a first part and a second part located on opposite sides of a reference plane, wherein the first reference plane is a plane passing through the origin and perpendicular to a preset direction of the electrode unit.

[0014] Preferably, the conductive wire comprises 2m+1 sub-sections, which are symmetrically distributed on both sides of the origin along a predetermined direction of the electrode unit. Let the first driving voltage of the Kth sub-section from the origin toward the predetermined direction of the electrode unit be Vu. K The second driving voltage is Vw K The C / g(x) is divided into m segments, where the driving voltage at the starting position of the kth segment is Vs. k The driving voltage corresponding to the endpoint position is Ve. k The first driving voltage and the second driving voltage applied to the m sub-units in a preset direction from the origin position towards the electrode unit satisfy:

[0015] |Vw i -Vu i |≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n , where n is an integer greater than or equal to 2, and 2≤i≤n;

[0016] The first driving voltage of the remaining sub-parts is the same as the first driving voltage applied to the sub-parts symmetrical to it, and the second driving voltage is the same as the second driving voltage applied to the sub-parts symmetrical to it.

[0017] Preferably, the conductive line is located outside the functional area of ​​the liquid crystal lens with adjustable optical power.

[0018] Preferably, a high-resistivity film or a high-dielectric-constant layer is disposed between the second electrode layer and the second alignment layer or between the second electrode layer and the second transparent substrate, and / or

[0019] A high-resistivity film or a high-dielectric-constant layer is disposed between the first electrode layer and the first alignment layer or between the first electrode layer and the first transparent substrate.

[0020] Secondly, the present invention provides a liquid crystal lens array with adjustable optical power. The array includes a plurality of liquid crystal lenses with adjustable optical power as described in the first aspect. At least one of the first and second electrode layers includes at least two electrode units. The projections of the leads in the first and second electrode layers onto a second reference plane form a plurality of intersection regions arranged in an array. The second reference plane is a plane parallel to both the leads of the first and second electrode units.

[0021] Thirdly, the present invention provides a liquid crystal lens array with adjustable optical power, the liquid crystal lens array with adjustable optical power including the liquid crystal lens with adjustable optical power described in the first aspect, wherein the lead wires of the electrode units in at least one of the first electrode layers and the second electrode layer extend to form multiple extension segments, and the projections of the lead wires of the electrode units in the first electrode layer and the lead wires of the electrode units in the second electrode layer onto a second reference plane form multiple intersection regions arranged in an array; the second reference plane is a plane parallel to both the lead wires of the first electrode unit and the lead wires of the second electrode unit.

[0022] Fourthly, the present invention provides an electronic product, including a control circuit and a liquid crystal lens with adjustable optical power as described in the first aspect, or a liquid crystal lens array with adjustable optical power as described in the second aspect, or a liquid crystal lens array with adjustable optical power as described in the third aspect, wherein the control circuit is electrically connected to the liquid crystal lens with adjustable optical power or the liquid crystal lens array with adjustable optical power.

[0023] Fifthly, the present invention provides a driving method for an optically adjustable liquid crystal lens or a liquid crystal lens array, used to drive the optically adjustable liquid crystal lens described in the first aspect, or the optically adjustable liquid crystal lens array described in the second aspect, or the liquid crystal lens array described in the third aspect, the method comprising the following steps:

[0024] Obtain the curve showing the relationship between the phase of the liquid crystal material and the driving voltage in a liquid crystal lens or liquid crystal lens array;

[0025] The range of the driving voltage is determined based on the corresponding relationship curve.

[0026] Based on the corresponding relationship curve and the range of the driving voltage, the corresponding relationship curve is divided into segments corresponding to the number of sub-sections of the conductive lines within the driving voltage range.

[0027] Obtain the voltage corresponding to the starting position and the voltage corresponding to the ending position of each segment of the corresponding relationship curve;

[0028] The voltage adjustment condition is based on the conditions satisfied by the first and second driving voltages of each sub-section driven by the voltages corresponding to the starting and ending positions of each segment.

[0029] Adjust the difference between the first driving voltage and the second driving voltage of each sub-part in the first electrode layer and the second electrode layer, and make the first driving voltage and the second driving voltage meet the voltage regulation conditions.

[0030] Beneficial Effects: The present invention relates to an adjustable optical power liquid crystal lens, an adjustable optical power liquid crystal lens array, electronic products, and a manufacturing method. The present invention configures the conductive lines in each electrode layer as being composed of multiple sub-parts. Each sub-part generates a potential of varying magnitude depending on the position of the conductive line, and multiple lead-out lines are drawn from different positions on the conductive line. Since one end of each lead-out line is connected to the conductive line, and the other end is suspended, the lead-out lines can diffuse the potential at the point of exit on the conductive line to the area where the lead-out line extends. Based on the aforementioned structure, the distance between the point of exit of each extension line of the conductive line in the predetermined direction of the electrode unit and the origin of the conductive line, and the length f(x) of the extension line satisfy the condition that f(x) is a broken line composed of multiple straight line segments, and the endpoint of each straight line segment of f(x) is located on g(x). C is a constant. This represents the rate of change of the phase of the liquid crystal material with voltage. Thus, even if the first driving voltage V1 applied to the first position of each sub-section and the second driving voltage V2 applied to the second position are not within the linear response region of the liquid crystal material, this invention can still achieve an accurate parabolic phase distribution in the liquid crystal material. The superposition of the potentials generated by the two electrode layers allows the liquid crystal material to form a precise parabolic distribution. With this invention, the application of the liquid crystal material is no longer limited by its linear response range, thereby improving the accuracy of the phase distribution and significantly increasing the optical power of the adjustable liquid crystal lens, thus significantly increasing the utilization rate of the liquid crystal material. Furthermore, the optical power of the liquid crystal lens can be adjusted by regulating the voltage applied to each sub-section. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0032] Figure 1 The response curve of the liquid crystal material;

[0033] Figure 2 This is a cross-sectional view of the adjustable optical power liquid crystal lens of the present invention.

[0034] Figure 3 This is a schematic diagram of the structure of the electrode units of the first electrode layer and the second electrode layer in this invention projected onto the second reference plane;

[0035] Figure 4 This is a schematic diagram of the structure of the first type of second electrode layer in this invention;

[0036] Figure 5 This is a schematic diagram of the structure of the second type of second electrode layer in this invention;

[0037] Figure 6 This is a schematic diagram of the structure of the first type of conductive wire in this invention;

[0038] Figure 7 This is a schematic diagram of the structure of the second type of conductive wire in this invention;

[0039] Figure 8 This is an exploded structural diagram of the first type of conductive wire in this invention;

[0040] Figure 9 This is an exploded structural diagram of the second type of conductive wire in this invention;

[0041] Figure 10 This is a schematic diagram of the structure of one sub-section of the conductive wire in this invention;

[0042] Figure 11 This is a schematic diagram illustrating how the response curve of the liquid crystal material is divided into several segments according to the present invention;

[0043] Figure 12 This is a schematic diagram of the broken line of the response curve of the approximate liquid crystal material of the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of a liquid crystal lens array with adjustable optical power according to the present invention;

[0045] Figure 14 This is a schematic diagram of another type of liquid crystal lens array with adjustable optical power in this invention;

[0046] Figure 15 This is a schematic flowchart of the driving method for the adjustable optical power liquid crystal lens or liquid crystal lens column array in this invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] Liquid crystal lens 100, first transparent substrate 10, first electrode layer 20, first alignment layer 30, liquid crystal layer 40, second alignment layer 50, second electrode layer 60, conductive line 61, sub-section 611, first position 6111, second position 6112, third position 6113, extension line 6114, first connecting line 6115, second connecting line 6116, origin position 6117, starting position 6118, lead line 62, extension segment 621, second transparent substrate 70, first reference plane 80, functional area 90, electrode unit 101, and junction area 110. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. It should be noted that, in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Where there is no conflict, embodiments of the present invention and the various features thereof can be combined with each other, all of which are within the scope of protection of the present invention.

[0050] Example 1

[0051] like Figure 2 As shown, this embodiment provides a liquid crystal lens with adjustable optical power. The liquid crystal lens with adjustable optical power in this embodiment includes a first transparent substrate 10, a first electrode layer 20, a first alignment layer 30, a liquid crystal layer 40, a second alignment layer 50, a second electrode layer 60, and a second transparent substrate 70 stacked sequentially.

[0052] The liquid crystal optical device in this embodiment can adopt a layered structure. The aforementioned liquid crystal layer 40, first alignment layer 30, second alignment layer 50, first electrode layer 20, second electrode layer 60, first transparent substrate 10, and second transparent substrate 70 are located in different layers, and these layers are stacked along the light transmission direction of the liquid crystal optical device, i.e., the normal direction of each layer. The arrangement can be found in [reference needed]. Figure 2 As shown, in Figure 2 Along the light transmission direction of the liquid crystal optical device, from bottom to top, are a first transparent substrate 10, a first electrode layer 20, a first alignment layer 30, a liquid crystal layer 40, a second alignment layer 50, a second electrode layer 60, and a second transparent substrate 70. Specifically, the first alignment layer 30 and the second alignment layer 50 are located on opposite sides of the liquid crystal layer 40; the first electrode layer 20 is located on the side of the first alignment layer 30 facing away from the liquid crystal layer 40; the second electrode layer 60 is located on the side of the second alignment layer 50 facing away from the liquid crystal layer 40; the first transparent substrate 10 is located on the side of the first electrode layer 20 facing away from the liquid crystal layer 40; and the second transparent substrate 70 is located on the side of the second electrode layer 60 facing away from the liquid crystal layer 40.

[0053] The first transparent substrate 10 and the second transparent substrate 70 can be made of transparent materials with certain strength and rigidity, such as glass substrates or plastic substrates. The first substrate serves to support the liquid crystal optical device. The first transparent substrate 10 can serve as a carrier for the first electrode layer 20, which can be deposited on the first substrate. The second substrate also serves a supporting function and can also serve as a carrier for the second electrode layer 60, which can be deposited on the second transparent substrate 70.

[0054] like Figure 3 As shown, in this embodiment, electrode units 101 are provided in both the first electrode layer and the second electrode layer 60. The potentials generated by the electrode units 101 in the two electrode layers are superimposed to form a potential distribution that can affect the deflection of liquid crystal molecules. In this embodiment, the electrode units 101 in the first electrode layer and the electrode units 101 in the second electrode layer 60 can adopt the same structural form.

[0055] like Figure 4 and Figure 5 As shown, in this embodiment, the middle electrode unit 101 of both the first electrode layer and the second electrode layer 60 includes conductive wires 61 and multiple lead wires 62, such as... Figure 5 and Figure 6As shown, the conductive line 61 includes a plurality of sub-sections 611 arranged along a preset direction of the electrode unit 101. The preset direction of the electrode unit 101 can be arbitrarily specified as needed. For example, if it is necessary to control the potential distribution at various positions in a certain direction in the space where the liquid crystal lens is located, then that direction can be specified as the preset direction of the electrode unit 101. The aforementioned preset direction can be arbitrarily specified as needed. For example, if it is necessary to use the electrode unit 101 to control the potential distribution at various positions in a certain direction in the space where the liquid crystal lens is located, then that direction can be specified as the preset direction. The projections of the lead-out lines 62 in the first electrode layer and the lead-out lines 62 in the second electrode layer 60 on the second reference plane have a partially intersecting area. The aforementioned plurality of sub-sections 611 refer to the number of two or more sub-sections 611 of the guide wire 61. In this embodiment, the conductive line 61 and the lead-out line 62 include, but are not limited to, wires with a certain resistance and thin lines plated on a transparent second substrate that have a certain resistance and can conduct electricity. To improve the lens effect, the conductive lines 61 in this embodiment can all be made of transparent conductive materials. These transparent conductive materials include, but are not limited to, ITO electrode materials, IZO electrode materials, FTO electrode materials, AZO electrode materials, and IGZO electrode materials. For example... Figure 8 and Figure 9As shown, each sub-section 611 of the conductive wire 61 includes a first position 6111 and a second position 6112, and the first position 6111 and the second position 6112 are different. The portion of the sub-section 611 located between the first position 6111 and the second position 6112 has the same width. The first position 6111 of the sub-section 611 is used to receive a first driving voltage, and the second position 6112 is used to receive a second driving voltage. In this embodiment, the first driving voltage is applied to the first position 6111 of each sub-section 611, and the second driving voltage is applied to the second position 6112 of each sub-section 611. Since the first position 6111 and the second position 6112 are different, the positions where the first driving voltage and the second driving voltage are applied on each sub-section 611 are also different. When the first position 6111 and the second position 6112 on the sub-section 611 are respectively applied with the two driving voltages, a potential with a magnitude distributed according to the position of the sub-section 611 can be formed on the sub-section 611 between the two positions. One end of the lead wire 62 is connected to the conductive wire 61, and the other end is suspended. The lead wire 62 is led out from the position between the first position 6111 and the second position 6112 of the sub-part 611. The position where the lead wire 62 connects to the conductive wire 61 is the lead-out position. The lead-out position is located between the first position 6111 and the second position 6112 of the sub-part 611, and at least two lead-out positions are different. In at least one preset region of the electrode unit 101, each lead wire 62 is parallel to each other. Since the lead wire 62 in this embodiment adopts a connection method in which one end is connected to the conductive wire 61 and the other end is suspended, the potential at each position on the same lead wire 62 is equal, and equal to the potential of the conductive wire 61 at the position where the lead wire 62 connects to the conductive wire 61. Furthermore, in this embodiment, the portion of the sub-part 611 located between the first position 6111 and the second position 6112 has the same width. Therefore, the potential at each lead-out position on the sub-part 611 is linearly related to the length of the conductive line 61 between that position and the first position 6111. Figure 10As shown, the sub-part 611 includes multiple extension lines 6114, a first connecting line 6115, and a second connecting line 6116. Adjacent extension lines 6114 are connected by either the first connecting line 6115 or the second connecting line 6116. The multiple extension lines 6114 are arranged sequentially along a preset direction of the electrode unit 101. Each extension line 6114 extends from a starting position 6118 to a position where it connects to the first connecting line 6115. The lead-out position is located at the point where the extension line 6114 connects to the first connecting line 6115. The starting position 6118 of the extension line 6114 connects to the second connecting line 6116. In this embodiment, each extension line 6114 is connected end-to-end via the first connecting line 6115 or the second connecting line 6116 to form a potential distribution under the application of a first driving voltage and a second driving voltage. The aforementioned plurality of extension lines 6114 are arranged sequentially along a preset direction of the electrode unit 101, thereby allowing the potential distribution at various positions along the preset direction of the Fresnel liquid crystal lens electrode unit 101 to be controlled using the potential on different extension lines 6114. As an optional but advantageous implementation, the starting position 6118 and the lead-out position of at least one of the plurality of extension lines 6114 are connected to two adjacent extension lines 6114 via a second connecting line 6116 and a first connecting line 6115, respectively. With the aforementioned structure, the second conductive line 61 forms a structure that bends back and forth along a direction perpendicular to the preset direction of the electrode unit 101, and the lead-out position can be set at the bend point. This allows the first conductive line 61 to occupy less space and makes the lead-out position more accurate, thereby improving the precision of potential distribution control. To further improve precision, in this embodiment, the spacing between two adjacent extension lines 6114 is less than or equal to 100 μm.

[0056] like Figure 6 and Figure 7 As shown, for a single electrode unit 101, let x be the distance between the lead-out position of each extension line 6114 of the conductive line 61 in the preset direction of the electrode unit 101 and the origin position 6117 of the conductive line 61. Then the length of the extension line 6114 is f(x), where f(x) is a broken line composed of multiple straight line segments, and the endpoint of each straight line segment of f(x) is located on g(x). C is a constant. The origin position 6117 represents the rate of change of the phase of the liquid crystal material with voltage. Specifically, the origin position 6117 is the first position 6111 of one of the sub-parts 611. In a specific implementation, the first position 6111 of one of the sub-parts 611 on the conductive line 61 is selected as the origin. In this embodiment, the length L of the extension line 6114 is set to be related to the distance between the lead-out position and the origin position 6117 of the conductive line 61. Specifically, the length L of the extension line 6114 and the distance x between the lead-out position and the origin position 6117 of the conductive line 61 can satisfy a certain functional relationship. For ease of description, the functional relationship satisfied by the length L of the extension line 6114 and the distance x between the lead-out position and the origin position 6117 of the conductive line 61 is denoted as f(x). For easier understanding, the relationship between the length L of the extension line 6114 and the distance x between the lead-out position and the origin position 6117 of the conductive line 61 can also be represented using a Cartesian coordinate system. Let's establish a rectangular coordinate system by taking the distance x between the lead-out position and the origin position 6117 of the conductive line 61 as the x-axis and the length L of the extension line 6114 as the y-axis. In this rectangular coordinate system, y = f(x) is satisfied. Figure 12 As shown, the graph of the function f(x) is a broken line composed of multiple straight line segments, such as... Figure 11 As shown, the endpoints of each straight line segment lie on the graph of the function g(x), meaning that g(x) is approximated by a broken line whose endpoints lie on g(x). C is a constant. This represents the rate of change of the phase of a liquid crystal material with respect to voltage.

[0057] For any sub-part 611, let the first driving voltage applied at the first position 6111 be V1, and the second driving voltage applied at the second position 6112 be V2, then the rate of change of phase along the x-direction is:

[0058]

[0059] because

[0060]

[0061] so

[0062]

[0063] but

[0064]

[0065] The phase distribution is then as follows

[0066]

[0067] When the phase is parabolically distributed along the x-axis...

[0068]

[0069] therefore

[0070]

[0071] That is, when the condition is met

[0072] In this embodiment, the phase distribution of the liquid crystal material satisfies a parabolic distribution.

[0073] in This represents the rate of change of the liquid crystal phase with voltage, reflected in Figure 1 The slope of the response curve shown is represented by the curve. From the aforementioned relationship, it can also be seen that the slope of curve g(x) is proportional to the reciprocal of the slope of the response curve. The aforementioned analysis shows that when the electrode unit 101 in a single electrode layer acts, it can make the phase distribution of the liquid crystal material satisfy a parabolic cylindrical distribution. Since the preset direction of the electrode unit 101 in the first electrode layer is perpendicular to the preset direction of the electrode unit 101 in the second electrode layer 60, the combined effect of the potential distribution generated by the electrode units 101 in the first and second electrode layers 60 results in a precise parabolic phase distribution of the liquid crystal material. Because this embodiment divides the conductive line 61 into multiple sub-sections 611, each sub-section 611 corresponds to a segment of the response curve. The combination of these sub-sections 611 can correspond to a response curve over a large range. By applying a first driving voltage and a second driving voltage corresponding to the response curve to each sub-section 611, and proportionally adjusting the difference between the first driving voltage and the second driving voltage of each sub-section 611, the optical power of the liquid crystal lens can be adjusted within a large optical power range. As one optional but advantageous implementation, in this embodiment, the conductive line 61 includes n sub-sections 611, which are located on the same side of the origin position 6117 in a preset direction of the electrode unit 101. That is, the conductive line 61 is arranged on one side. Correspondingly, the lead-out line 62 includes a first part and a second part located on opposite sides of the first reference plane 80, whereby the first reference plane 80 is a plane passing through the origin position 6117 of the conductive line 61 and perpendicular to the preset direction. Figure 4 As shown, the space where the liquid crystal lens is located is divided into two regions by the first reference plane 80. The second conductive line 61 can span both regions, allowing the potential distribution of both regions to be controlled by the same conductive line 61. This reduces the length of the conductive line 61 by half, significantly lowering the manufacturing cost and energy consumption of the liquid crystal lens. Let the first driving voltage of the i-th sub-part 611 be Vu. i The second driving voltage is Vw i ,like Figure 10As shown, C / g(x) is divided into n segments, where the driving voltage corresponding to the starting position of the i-th segment is Vs. i The driving voltage corresponding to the endpoint position is Ve. i The first and second driving voltages applied to the n sub-parts 611 satisfy: |Vw i -Vu i |≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n Where n is an integer greater than or equal to 2, and 2≤i≤n. The optical power of the liquid crystal lens can be adjusted by changing the driving voltage of each sub-section 611 under the aforementioned conditions. For example, as shown in Figure 6, the conductive line 61 is provided with three sub-sections 611, where the first sub-section 611 has a first driving voltage Vu1=V1 and a second driving voltage Vw1=V2, the second sub-section 611 has a first driving voltage Vu2=V3 and a second driving voltage Vw2=V4, and the third sub-section 611 has a first driving voltage Vu3=V5 and a second driving voltage Vw3=V6. As shown in Figure 11, the response curve C / g(x) of the liquid crystal material is correspondingly divided into three segments. Where the driving voltage corresponding to the starting position of the first segment is Vs1 = Va, and the driving voltage corresponding to the ending position is Ve1 = Vb; where the driving voltage corresponding to the starting position of the second segment is Vs2 = Vb, and the driving voltage corresponding to the ending position is Ve2 = Vc; where the driving voltage corresponding to the starting position of the third segment is Vs3 = Vc, and the driving voltage corresponding to the ending position is Ve3 = Vd, then the driving voltage of each sub-section 611 satisfies:

[0074]

[0075] like Figure 7As shown, as one optional but advantageous implementation, the conductive line 61 includes 2m+1 sub-sections 611, which are symmetrically distributed on both sides of the origin position 6117 along a predetermined direction of the electrode unit 101. In the aforementioned structure, the conductive line 61 and the lead-out line 62 are arranged about a first reference plane 80, with the sub-section 611 in the middle position spanning both sides of the first reference plane 80 and having a symmetrical shape about the first reference plane 80. In this arrangement, the sub-section 611 in the middle position also includes a third position 6113, with the first position 6111 located between the third position 6113 and the second position 6112. The third position 6113 of the conductive line 61 is used to receive a second driving voltage. The portion of the conductive line 61 located between the first position 6111 and the second position 6112 has the same width, and the lead-out line 62 is also led out from the position between the first position 6111 and the third position 6113 of the conductive line 61.

[0076] This embodiment adds a third position 6113 for applying a second driving voltage to the aforementioned second position 6112. This allows the second driving voltage to be applied simultaneously to both the second position 6112 and the third position 6113 of the conductive line 61. When the second driving voltage is applied simultaneously to the second position 6112 and the third position 6113 of the conductive line 61, a position-dependent potential is generated between the second position 6112 and the first position 6111, and between the third position 6113 and the first position 6111. The lead-out lines 62 can be drawn from both sides of the first position 6111, meaning the lead-out positions can be located either between the second position 6112 and the first position 6111, or between the third position 6113 and the first position 6111. With the aforementioned structure, the potential distribution on both sides of the first position 6111 can be controlled using the lead-out lines 62 on both sides of the first position 6111, thereby enabling the liquid crystal material to form a symmetrical parabolic phase distribution.

[0077] When the aforementioned symmetrical structure is adopted, let the first driving voltage of the Kth sub-part 611 from the origin position 6117 toward the electrode unit 101 in a preset direction be Vu. K The second driving voltage is Vw K ,like Figure 10 As shown, C / g(x) is divided into m segments, where the driving voltage corresponding to the starting position of the kth segment is Vs. k The driving voltage corresponding to the endpoint position is Ve. k The first driving voltage and the second driving voltage applied to the m sub-parts 611 in a preset direction from the origin position 6117 toward the electrode unit 101 satisfy:

[0078] |Vw i -Vu i|≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n Where n is an integer greater than or equal to 2, 2≤i≤n; the first driving voltage of the remaining sub-parts 611 is the same as the first driving voltage applied to the sub-parts 611 symmetrical to it, and the second driving voltage is the same as the second driving voltage applied to the sub-parts 611 symmetrical to it. Adjusting the driving voltage of each sub-part 611 under the aforementioned conditions can adjust the optical power of the liquid crystal lens. For example... Figure 7 As shown, the conductive line 61 is provided with 5 sub-sections 611. The first sub-section 611, starting from the origin position 6117 and moving towards the electrode unit 101 in a preset direction, has a first driving voltage Vu1 = V1 and a second driving voltage Vw1 = V2. The second sub-section 611 has a first driving voltage Vu2 = V3 and a second driving voltage Vw2 = V4. The third sub-section 611 has a first driving voltage Vu3 = V5 and a second driving voltage Vw3 = V6.

[0079] like Figure 1 As shown, the response curve C / g(x) of the liquid crystal material is divided into three segments. The driving voltage at the starting position of the first segment is Vs1 = Va, and the driving voltage at the ending position is Ve1 = Vb; the driving voltage at the starting position of the second segment is Vs2 = Vb, and the driving voltage at the ending position is Ve2 = Vc; the driving voltage at the starting position of the third segment is Vs3 = Vc, and the driving voltage at the ending position is Ve3 = Vd. The driving voltages of each sub-section 611 satisfy the following:

[0080]

[0081] like Figure 7 As shown, the second sub-part 611, which is counted from the origin position 6117 in the opposite direction to the preset direction of the electrode unit 101, is symmetrical to the second sub-part 611, which is counted from the origin position 6117 in the preset direction of the electrode unit 101. The first position 6111 and the second position 6112 of the two are also symmetrical to each other, and the first driving voltage and the second driving voltage applied to the two are the same.

[0082] The third sub-part 611, counting from the origin position 6117 in the opposite direction to the preset direction of the electrode unit 101, is symmetrical to the third sub-part 611 counting from the origin position 6117 in the preset direction of the electrode unit 101. Their first positions 6111 and second positions 6112 are also symmetrical, and the first and second driving voltages applied to them are the same. In this embodiment, the number of sub-parts 611 can be set as needed and is not limited here. The more sub-parts 611 there are, the more accurate the potential distribution will be.

[0083] As one optional but advantageous implementation, in this embodiment, the conductive line 61 is located outside the functional region 90 of the optically adjustable liquid crystal lens. In the prior art, the element generating the potential distribution needs to be placed within the functional region 90 of the liquid crystal lens to form a potential that affects the phase of the liquid crystal material. However, this method limits the range of the element generating the potential distribution to the functional region 90, making it difficult to meet the needs of potential control. In this embodiment, the element generating the potential distribution (conductive line 61) and the element controlling the potential distribution (lead line 62) are separated, with the element generating the potential located outside the functional region 90, and at least a portion of the element controlling the potential located within the functional region 90 of the liquid crystal optics. This allows the element generating the potential distribution to be unrestricted by the functional region 90, facilitating precise design, and ensuring that the element generating the potential distribution and the functional region 90 do not interfere with each other.

[0084] As an optional but advantageous implementation, a high-resistivity film or a high-dielectric-constant layer is disposed between the second electrode layer 60 and the second alignment layer or between the second electrode layer 60 and the second transparent substrate.

[0085] Similarly, in this embodiment, a high-impedance film or a high-dielectric-constant layer is disposed between the first electrode layer and the first alignment layer, or between the first electrode layer and the first transparent substrate. This embodiment uses the addition of a high-impedance film or a high-dielectric-constant layer to make the potential between adjacent leads 62 smoother.

[0086] Example 2

[0087] like Figure 13As shown, this embodiment provides a liquid crystal lens 100 array, including the liquid crystal lens 100 described in Embodiment 1. At least one of the first electrode layer 20 and the second electrode layer 60 includes at least two electrode units 101. The projections of the leads 62 in the first electrode layer 20 and the leads 62 in the second electrode layer 60 onto a second reference plane form a plurality of intersection regions 110 arranged in an array. The second reference plane is a plane parallel to both the leads 62 of the first electrode unit 101 and the leads 62 of the second electrode unit 101. The aforementioned intersection region 110 refers to the region where the projections of the leads 62 in the first electrode layer 20 and the leads 62 in the second electrode layer 60 overlap on the second reference plane. In this embodiment, one electrode unit 101 can be provided in one electrode layer, and two or more electrode units 101 can be provided in the other electrode layer, or two or more electrode units 101 can be provided in both electrode layers. Each electrode unit 101 in the two electrode layers can form multiple arrayed junction regions 110. In these junction regions 110, the potentials of the two electrode layers are superimposed to form a parabolic potential distribution. The electric field generated by the potential distribution in these regions can drive the liquid crystal molecules to deflect, thereby forming individual liquid crystal lenses 100. Furthermore, the aperture and spacing of the aforementioned liquid crystal lenses 100 can be adjusted as needed. In this embodiment, by adopting the aforementioned structure, the liquid crystal material in each junction region 110 can form a precise parabolic phase distribution, resulting in a better liquid crystal lens 100 array. Moreover, since the liquid crystal lens 100 array in this embodiment uses the liquid crystal lens 100 from Embodiment 1, the liquid crystal lens 100 array in this embodiment not only has high phase distribution accuracy of the liquid crystal material but also high utilization of the liquid crystal material, achieving higher optical power. Furthermore, the optical power of each liquid crystal lens in the liquid crystal lens array can be adjusted by adjusting the difference between the first driving voltage and the second driving voltage of each sub-unit, thereby adjusting the optical power of the entire liquid crystal lens array.

[0088] Example 3

[0089] like Figure 14As shown, this embodiment provides another form of liquid crystal lens 100 array. In this embodiment, the liquid crystal lens 100 array includes the liquid crystal lens 100 described in Embodiment 1. The lead wires 62 of the electrode units 101 in at least one of the first electrode layers 20 and the second electrode layer 60 of the liquid crystal lens 100 extend to form multiple extension segments 621. The projections of the extension segments 621 of the electrode units 101 in the first electrode layer 20 and the extension segments 621 of the electrode units 101 in the second electrode layer 60 onto the second reference plane form multiple intersecting regions 110 arranged in an array. In the same intersecting region 110, each lead wire 62 of the same electrode unit 101 is parallel to each other and is equally spaced along the preset direction of the electrode unit 101. The second reference plane is a plane that is parallel to both the lead wires 62 of the first electrode unit 101 and the lead wires 62 of the second electrode unit 101. In this embodiment, the liquid crystal lens 100 array can be formed by extending the lead wires 62 of the liquid crystal lens 100 to form multiple extension segments 621. Each extension segment 621 can control the potential distribution of its corresponding region, thereby driving the liquid crystal molecules in the liquid crystal layer 40 of its corresponding region to deflect. The projection of the extension segments 621 in the two electrode layers onto the second reference plane forms multiple overlapping regions, namely the aforementioned junction region 110, with each region corresponding to one liquid crystal lens 100. When the first driving voltage and the second driving voltage are applied to each sub-part of the first electrode layer 20, the potential distribution formed by the portion of each extension segment 621 in the junction region 110 can drive the liquid crystal molecules in the liquid crystal layer 40 to deflect and form a parabolic phase distribution. Similarly, when the first driving voltage and the second driving voltage are applied to each sub-part of the second electrode layer 60, the potential distribution formed by the portion of each extension segment 621 in the junction region 110 can drive the liquid crystal molecules in the liquid crystal layer 40 to deflect and form a parabolic phase distribution. The potentials of the two electrode layers are superimposed to form a parabolic potential distribution in the junction region 110. Since the junction regions 110 are arranged in an array, the liquid crystal lenses 100 corresponding to each junction region 110 are also arranged in an array. By adopting the aforementioned structure in this embodiment, the liquid crystal material within each junction region 110 can form a precisely parabolic potential distribution, thereby obtaining a better array of liquid crystal lenses 100. Since the liquid crystal cylindrical lens array in this embodiment is formed by extending the lead-out lines 62 of the liquid crystal cylindrical lenses in Embodiment 1, the liquid crystal cylindrical lens array in this embodiment not only has high phase distribution accuracy of the liquid crystal material but also high utilization of the liquid crystal material, achieving higher optical power. Furthermore, the optical power can be adjusted by adjusting the two driving voltages on the sub-sections of each conductive line.

[0090] Example 4

[0091] like Figure 15As shown, this embodiment provides a driving method for an adjustable optical power liquid crystal lens or a liquid crystal lens array. This method is used to drive the liquid crystal lens described in Embodiment 1 or the liquid crystal lens array described in Embodiment 2 or Embodiment 3. The method includes the following steps:

[0092] S1: Obtain the curve showing the relationship between the phase of the liquid crystal material and the driving voltage in the liquid crystal lens or array; where the curve represents the phase of the liquid crystal material when a certain voltage is applied. This curve is represented by the liquid crystal material response curve. Figure 1 As shown in the figure, the horizontal axis of the curve represents the magnitude of the applied voltage, and the vertical axis represents the phase of the corresponding liquid crystal material. Therefore, the relationship between the phase of the liquid crystal material and the driving voltage can also be obtained through the liquid crystal material response curve.

[0093] S2: Determine the range of driving voltage based on the corresponding relationship curve; this step selects the range of driving voltage for the liquid crystal lens based on the aforementioned corresponding relationship curve, ensuring that the driving voltage within the selected range lies on the corresponding relationship curve. For example, the portion between Va and Vd in the figure can be selected as the range of driving voltage.

[0094] S3: Based on the corresponding relationship curve and the range of the driving voltage, divide the corresponding relationship curve within the driving voltage range into segments corresponding to the number of sub-parts of the conductive line; when the conductive line includes n sub-parts, and the n sub-parts are located on the same side of the origin position in the preset direction of the electrode unit, divide the corresponding relationship curve C / g(x) into n segments. When the conductive line includes 2m+1 sub-parts, and the 2m+1 sub-parts are symmetrically distributed on both sides of the origin position along the preset direction of the electrode unit, divide the corresponding relationship curve C / g(x) into m segments.

[0095] S4: Obtain the voltage corresponding to the starting position and the voltage corresponding to the ending position of each segment of the corresponding relationship curve;

[0096] S5: The conditions satisfied by the first driving voltage and the second driving voltage of each sub-section based on the voltage corresponding to the starting position and the voltage corresponding to the ending position of each segment are used as voltage adjustment conditions.

[0097] In this embodiment, when the conductive line comprises n sub-sections, and the n sub-sections are located on the same side of the origin in a preset direction of the electrode unit, C / g(x) is divided into n segments, where the driving voltage corresponding to the starting position of the i-th segment is Vs. i The driving voltage corresponding to the endpoint position is Ve. i The voltage regulation condition is that the first driving voltage and the second driving voltage applied to the n sub-units satisfy: |Vw i-Vu i |≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n Where n is an integer greater than or equal to 2, and 2 ≤ i ≤ n. In this embodiment, when the conductive line includes 2m+1 sub-sections, and the 2m+1 sub-sections are symmetrically distributed on both sides of the origin along the preset direction of the electrode unit, the corresponding relationship curve C / g(x) is divided into m segments. Let the first driving voltage of the Kth sub-section from the origin towards the preset direction of the electrode unit be Vu. K The second driving voltage is Vw K The C / g(x) is divided into m segments, where the driving voltage at the starting position of the kth segment is Vs. k The driving voltage corresponding to the endpoint position is Ve. k The voltage regulation condition is that the first driving voltage and the second driving voltage applied to the m sub-units in a preset direction from the origin position towards the electrode unit satisfy: |Vw i -Vu i |≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n , where n is an integer greater than or equal to 2, 2≤i≤n; the first driving voltage of the remaining sub-parts is the same as the first driving voltage applied to the sub-parts symmetrical to it, and the second driving voltage is the same as the second driving voltage applied to the sub-parts symmetrical to it.

[0098] S6: Adjust the difference between the first driving voltage and the second driving voltage of each sub-part in the first electrode layer and the second electrode layer, and make the first driving voltage and the second driving voltage satisfy the voltage adjustment condition. In this embodiment, adjusting the difference between the driving voltages of each sub-part under the aforementioned condition can adjust the optical power of the liquid crystal lens.

[0099] Example 5

[0100] This embodiment provides an electronic product, which includes a control circuit and the liquid crystal optical device described in Embodiment 1. The control circuit is electrically connected to the liquid crystal optical device or an array of liquid crystal optical devices. The electronic product includes, but is not limited to, imaging devices, display devices, mobile phones, AR devices, VR devices, glasses-free 3D products, wearable devices, etc.

[0101] The above is a detailed description of the adjustable optical power liquid crystal lens, the adjustable optical power liquid crystal lens array, the electronic product, and the driving method provided in the embodiments of the present invention.

[0102] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0103] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this invention are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0104] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above. That is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously. The above descriptions are merely specific embodiments of this invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this invention, and these modifications or substitutions should all be covered within the scope of protection of this invention.

Claims

1. A liquid crystal lens with adjustable optical power, characterized in that, It includes a first transparent substrate, a first electrode layer, a first alignment layer, a liquid crystal layer, a second alignment layer, a second electrode layer, and a second transparent substrate, which are stacked sequentially. Both the first electrode layer and the second electrode layer include electrode units; The electrode unit includes conductive wires and multiple lead wires. The conductive wires include multiple sub-parts arranged along a preset direction of the electrode unit. Each sub-part includes a first position and a second position. The first position and the second position are different. The preset direction of the electrode unit of the first electrode layer is perpendicular to the preset direction of the electrode unit of the second electrode layer. The first position of the sub-section is used to receive a first driving voltage, and the second position is used to receive a second driving voltage. The portion of the sub-section between the first and second positions has the same width. One end of the lead wire is connected to the conductive wire, and the other end is suspended. The lead wire is led out from the position between the first and second positions of the sub-section. The position where the lead wire connects to the conductive wire is the lead-out position. The lead-out position is located between the first and second positions of the sub-section, and at least two lead-out positions are different. In at least one preset region of the electrode unit, each lead wire is parallel to the others. The sub-section includes multiple extension lines, a first connecting line, and a second connecting line. Adjacent extension lines are connected by either the first or second connecting line. The multiple extension lines are arranged sequentially along a preset direction of the electrode unit. Each extension line extends from a starting position to a position where it connects with the first connecting line. The lead-out position is located where the extension line connects with the first connecting line. The starting position of the extension line is connected to the second connecting line. Let x be the distance between the origin of each extension of the conductive line in the predetermined direction of the electrode unit and the point where the extensions originate. Then the length of the extension is f(x), where f(x) is a broken line composed of multiple straight line segments, and the endpoint of each straight line segment of f(x) lies on g(x). C is a constant. The origin position represents the rate of change of the phase of the liquid crystal material with voltage, and the origin position is the first position of one of the sub-parts.

2. The liquid crystal lens with adjustable optical power according to claim 1, characterized in that, The conductive line comprises n sub-sections, which are located on the same side of the origin in a predetermined direction of the electrode unit. Let the first driving voltage of the i-th sub-section be Vu. i The second driving voltage is Vw i C / g(x) is divided into n segments, where the driving voltage at the starting position of the i-th segment is Vs. i The driving voltage corresponding to the endpoint position is Ve. i The first and second driving voltages applied to the n sub-units satisfy: |Vw i -Vu i |≤Ve i -Vs i And Vw1-Vu1:Vw2-Vu2:……Vw n -Vu n =Ve1-Vs1:Ve2-Vs2:……Ve n -Vs n , where n is an integer greater than or equal to 2, and 2≤i≤n.

3. The liquid crystal lens with adjustable optical power according to claim 2, characterized in that, The lead wire includes a first part and a second part located on opposite sides of a reference plane, wherein the reference plane is a plane passing through the origin and perpendicular to a preset direction of the electrode unit.

4. The liquid crystal lens with adjustable optical power according to claim 1, characterized in that, The conductive line is located outside the functional area of ​​the adjustable optical power liquid crystal lens.

5. The liquid crystal lens with adjustable optical power according to any one of claims 1 to 4, characterized in that, A high-resistivity film or a high-dielectric-constant layer is disposed between the second electrode layer and the second alignment layer or between the second electrode layer and the second transparent substrate, and / or A high-resistivity film or a high-dielectric-constant layer is disposed between the first electrode layer and the first alignment layer or between the first electrode layer and the first transparent substrate.

6. A liquid crystal lens array with adjustable optical power, characterized in that, The liquid crystal lens comprising any one of claims 1 to 5 is optically adjustable, wherein at least one of the first electrode layer and the second electrode layer comprises at least two electrode units, and the projection of the leads in the first electrode layer and the leads in the second electrode layer onto a second reference plane forms a plurality of intersecting regions arranged in an array, wherein the second reference plane is a plane parallel to both the leads of the first electrode unit and the leads of the second electrode unit.

7. A liquid crystal lens array with adjustable optical power, characterized in that, The liquid crystal lens with adjustable optical power according to any one of claims 1 to 5 includes a lead wire of an electrode unit in at least one of the first electrode layer and the second electrode layer extending to form a plurality of extension segments, and the projection of the lead wire of the electrode unit in the first electrode layer and the lead wire of the electrode unit in the second electrode layer onto a second reference plane to form a plurality of intersection regions arranged in an array; the second reference plane is a plane parallel to both the lead wire of the first electrode unit and the lead wire of the second electrode unit.

8. An electronic product, characterized in that, The device includes a control circuit and a liquid crystal lens with adjustable optical power as described in any one of claims 1 to 5 or an array of liquid crystal lenses with adjustable optical power as described in any one of claims 6 to 7, wherein the control circuit is electrically connected to the liquid crystal lens with adjustable optical power or the array of liquid crystal lenses with adjustable optical power.

9. A driving method for a liquid crystal lens or liquid crystal lens array with adjustable optical power, characterized in that, The method for driving a liquid crystal lens according to any one of claims 1 to 5 or a liquid crystal lens array according to any one of claims 6 to 7 includes the following steps: Obtain the curve showing the relationship between the phase of the liquid crystal material and the driving voltage in a liquid crystal lens or liquid crystal lens array; The range of the driving voltage is determined based on the corresponding relationship curve. Based on the corresponding relationship curve and the range of the driving voltage, the corresponding relationship curve is divided into segments corresponding to the number of sub-sections of the conductive lines within the driving voltage range. Obtain the voltage corresponding to the starting position and the voltage corresponding to the ending position of each segment of the corresponding relationship curve; The voltage adjustment condition is based on the conditions satisfied by the first and second driving voltages of each sub-section driven by the voltages corresponding to the starting and ending positions of each segment. Adjust the difference between the first driving voltage and the second driving voltage of each sub-part in the first electrode layer and the second electrode layer, and make the first driving voltage and the second driving voltage meet the voltage regulation conditions.

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