Liquid crystal optical devices and electronic products

Abstract

SOLUTION: The present invention relates to the technical field of a liquid crystal optical device, especially, a liquid crystal optical device and an electronic product. The liquid crystal optical device includes a first substrate, a first electrode layer, a liquid crystal layer, a second electrode layer and a second substrate laminated in order; the second electrode layer includes an insulating layer, a first electrode structure and a second electrode structure; one of the first and second electrode structures is positioned on the surface of the insulating layer facing the liquid crystal layer; the other is positioned on the surface of the insulating layer separated from the liquid crystal layer; and the projection of the second electrode structure on a plane positioned at the first electrode structure covers the gap of the first electrode structure.EFFECT: The diffraction phenomenon of a liquid crystal optical device is effectively removable.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal optical devices, and particularly to liquid crystal optical devices and electronic products.

Background Art

[0002] In order to improve the spatial potential distribution accuracy of liquid crystal optical devices such as liquid crystal lenses and liquid crystal Fresnel lenses, the applicant has arranged electrode lines capable of generating a potential with a gradient change distribution in the liquid crystal optical device, and controls the passing position of the electrode lines in the functional region of the liquid crystal optical device, thereby proposing to accurately control the spatial potential distribution in the functional region of the liquid crystal optical device. However, when the above structure is adopted, the liquid crystal optical device exhibits a diffraction phenomenon that affects its optical effect, which has an adverse effect on refractive liquid crystal optical devices.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In view of this, embodiments of the present invention provide a liquid crystal optical device and an electronic product for solving the technical problem that a significant diffraction phenomenon appears in a conventional refractive liquid crystal optical device.

Means for Solving the Problems

[0004] To achieve the above object, the liquid crystal optical device of the present invention includes a first substrate, a first electrode layer, a liquid crystal layer, a second electrode layer, and a second substrate that are sequentially stacked. The second electrode layer includes an insulating layer, a first electrode structure, and a second electrode structure. One of the first electrode structure and the second electrode structure is located on the surface of the insulating layer facing the liquid crystal layer, and the other is located on the surface of the insulating layer away from the liquid crystal layer. The projection of the second electrode structure on the plane where the first electrode structure is located covers the gap of the first electrode structure.

Effects of the Invention

[0005] Beneficial Effects: In the liquid crystal optical device and electronic product of the present invention, by providing two electrode structures, a first electrode structure and a second electrode structure, in the second electrode layer, the distribution of the spatial electric field in the liquid crystal optical device is controlled, and the two electrode structures are separated by utilizing an insulating layer, thereby insulating the two electrode structures from each other. The projection of the second electrode structure onto the plane where the first electrode structure is located covers the gaps between adjacent segments of the first electrode structure, and the projection of the first electrode structure onto the plane where the second electrode structure is located covers the gaps between adjacent segments of the second electrode structure. This effectively eliminates the diffraction phenomenon that occurs when a driving voltage is applied to only one electrode structure, and significantly improves the optical effect of the liquid crystal optical device. [Brief explanation of the drawing]

[0006] To more clearly illustrate the technical concepts of the embodiments of the present invention, the following is a brief introduction to the drawings necessary for use in the embodiments of the present invention. Anything that a person skilled in the art can obtain from these drawings without any creative effort is within the scope of the protection of the present invention. [Figure 1] This is a schematic diagram of the exploded structure of the liquid crystal optical device of the present invention. [Figure 2] This is a cross-sectional view of the liquid crystal optical device of the present invention. [Figure 3] This is one schematic diagram of the first electrode structure using a concentric arc shape in the present invention. [Figure 4] This is one schematic diagram of the second electrode structure using a concentric arc shape in the present invention. [Figure 5] This is one schematic diagram showing how the projections of the first electrode structure and the second electrode structure, which use a concentric arc shape in the present invention, mutually cover each other. [Figure 6] This is the second schematic diagram of the first electrode structure using a concentric arc shape in the present invention. [Figure 7] This is the second schematic diagram of the second electrode structure using a concentric arc shape in the present invention. [Figure 8] This is the second schematic diagram showing how the projections of the first electrode structure and the second electrode structure, which use a concentric arc shape in the present invention, mutually cover each other. [Figure 9] This is a schematic diagram of the first electrode structure using the first potential distribution line in the present invention. [Figure 10] This is a schematic diagram of the second electrode structure using the second potential distribution line in the present invention. [Figure 11] This is a schematic diagram showing how the third electrode wire and the fourth electrode wire in the present invention mutually cover each other. [Figure 12] This is another schematic diagram of the first electrode structure using the first potential distribution line in the present invention. [Figure 13] This is another schematic diagram of the second electrode structure using the second potential distribution line in the present invention. [Figure 14] This is a schematic diagram showing the third electrode wire and the fourth electrode wire in the present invention partially covering each other. [Figure 15] This is another schematic diagram showing the third electrode wire and the fourth electrode wire in the present invention partially covered. [Figure 16] This is a schematic diagram of the second electrode structure using the third potential distribution line in the present invention. [Figure 17] This is a schematic diagram of the second electrode structure using the fourth potential distribution line in the present invention. [Figure 18] Figures 16 and 17 show schematic diagrams illustrating how the first electrode structure and the second electrode structure mutually cover each other. [Figure 19] This is another schematic diagram of the second electrode structure using the third potential distribution line in the present invention. [Figure 20] This is another schematic diagram of the second electrode structure using the fourth potential distribution line in the present invention. [Figure 21] Figures 19 and 20 show schematic diagrams illustrating how the first electrode structure and the second electrode structure mutually cover each other. [Figure 22] This is another schematic diagram showing how the first electrode structure and the second electrode structure in Figures 19 and 20 mutually cover each other. [Figure 23] This is a schematic diagram of the first electrode structure of the Fresnel liquid crystal lens in the present invention. [Figure 24] This is a schematic diagram of the second electrode structure of the Fresnel liquid crystal lens in the present invention. [Figure 25]It is a schematic diagram in which the first electrode structure and the second electrode structure in FIGS. 23 and 24 cover each other. [Figure 26] It is another schematic diagram in which the first electrode structure and the second electrode structure in FIGS. 23 and 24 cover each other. [Figure 27] It is a schematic diagram of the potential distribution when the prior art uses one electrode structure for the second electrode layer. [Figure 28] It is a schematic diagram of the potential distribution when a driving voltage is applied to one of the two electrode structures of the present invention and no driving voltage is applied to the other. [Figure 29] It is a schematic diagram of the potential distribution when driving voltages are applied to both of the two electrode structures in the present invention. [Figure 30] It is a cross-sectional view of the liquid crystal optical device of the present invention. [Figure 31] It is a first schematic diagram of an electrode unit using a concentric arc shape in the present invention. [Figure 32] It is a schematic structural diagram of the first electrode structure of the electrode unit of the present invention. [Figure 33] It is a schematic structural diagram of the second electrode structure of the electrode unit of the present invention. [Figure 34] It is a second schematic structural diagram of an electrode unit using a concentric arc shape in the present invention. [Figure 35] It is a third schematic structural diagram of an electrode unit using a concentric arc shape in the present invention. [Figure 36] It is a first schematic structural diagram of an electrode unit for realizing a liquid crystal column lens in the present invention. [Figure 37] It is a second schematic structural diagram of an electrode unit for realizing a liquid crystal column lens in the present invention. [Figure 38] It is a third schematic structural diagram of an electrode unit for realizing a liquid crystal column lens in the present invention. [Figure 39] It is a first schematic diagram of an electrode unit for realizing a liquid crystal Fresnel lens in the present invention. [Figure 40] It is a second schematic diagram of an electrode unit for realizing a liquid crystal Fresnel lens in the present invention. [Modes for carrying out the invention]

[0007] <Example 1> As shown in Figures 1 and 2, this embodiment provides a liquid crystal optical device, which mainly comprises a first substrate 1-1, a first electrode layer 1-2, a liquid crystal layer 1-3, a second electrode layer 1-4, and a second substrate 1-5, which are sequentially stacked.

[0008] In this embodiment, the liquid crystal optical device may use a layered layout structure. The first substrate 1-1, the first electrode layer 1-2, the liquid crystal layer 1-3, the second electrode layer 1-4, and the second substrate 1-5 are stacked and arranged along the normal direction of each layer of the liquid crystal optical device. The first transparent substrate and the second transparent substrate may be made of a transparent material having a certain strength and rigidity, such as a glass substrate or a plastic substrate. The first substrate 1-1 can play a supporting role for the liquid crystal optical device. The first substrate 1-1 may also be a bearer for the first electrode layer 1-2, and the first electrode layer 1-2 may be plated on the first substrate 1-1. The second substrate 1-5 can also play a supporting role and may further be a bearer for the second electrode layer 1-4.

[0009] The form of the third electrode structure in the first electrode layer may be provided as needed, for example, as a surface electrode. Thus, the first electrode layer 1-2 may form an equipotential plane, or it may be provided in the form of various patterned electrodes, and there are no limitations here.

[0010] The second electrode layer 1-4 includes an insulating layer 1-45, a first electrode structure 1-41, and a second electrode structure 1-42, wherein one of the first electrode structure 1-41 and the second electrode structure 1-42 is located on the surface of the insulating layer 1-45 facing the liquid crystal layer 1-3, and the other is located on the surface of the insulating layer 1-45 away from the liquid crystal layer 1-3. In this embodiment, the second electrode layer 1-4 uses two electrode structures provided above and below, separated by the insulating layer 1-45. In specific implementation, the first electrode structure 1-41 may be positioned on the side of the insulating layer 1-45 facing the liquid crystal layer 1-3, and the second electrode layer 1-4 may be positioned on the side of the insulating layer 1-45 away from the liquid crystal layer; or the second electrode structure 1-42 may be positioned on the side of the insulating layer 1-45 facing the liquid crystal layer 1-3, and the first electrode layer 1-2 may be positioned on the side of the insulating layer 1-45 away from the liquid crystal layer; however, there are no limitations here.

[0011] The first electrode structure 1-41 is provided with a first drive voltage application position for receiving a first drive voltage and a second drive voltage application position for receiving a second drive voltage. The first drive voltage and the second drive voltage are different.

[0012] By applying a first drive voltage to the first drive voltage application position of the first electrode structure 1-41 and a second drive voltage to the second drive voltage application position of the second electrode structure 1-42, a potential exhibiting a gradient distribution can be formed on the first electrode structure 1-41. In this way, by controlling the position of the first electrode structure 1-41 in space, the distribution of spatial potential can be controlled.

[0013] The second electrode structure 1-42 is provided with a third drive voltage application position for receiving a third drive voltage and a fourth drive voltage application position for receiving a fourth drive voltage, and the third drive voltage and the fourth drive voltage are different.

[0014] By applying a third drive voltage to the third drive voltage application position of the second electrode structure 1-42, and then applying a fourth drive voltage to the fourth drive voltage application position of the second electrode structure 1-42, a potential exhibiting a gradient distribution can be formed on the second electrode structure 1-42. In this way, by controlling the position of the second electrode structure 1-42 in space, the distribution of spatial potential can be controlled.

[0015] The first electrode structure 1-41 includes at least two segments, with gaps 1-44 between at least some adjacent segments in the first electrode structure 1-41, and the second electrode structure 1-42 includes at least two segments, with gaps 1-44 between at least some adjacent segments in the second electrode structure 1-42. As shown in Figures 5, 8, and 11, all or part of the projection of the second electrode structure 1-42 in the plane on which the first electrode structure 1-41 is located covers the gaps 1-44 between adjacent segments of the first electrode structure 1-41, and all or part of the plane on which the second electrode structure 1-42 is located covers the gaps 1-44 between adjacent segments of the second electrode structure 1-42. Full coverage means that the projection of one electrode structure completely shields the gaps 1-44, in which case the area occupied by the projection of the electrode structure may be larger than or equal to the gaps 1-44. Partial coverage means that the projection of one electrode structure occupies only a portion of the gap 1-44. Adjacent segments mean parts of the same electrode structure that are in different, adjacent spatial locations. In order to generate a potential exhibiting a gradient distribution, in some regions of the first electrode structure 1-41, the potentials of different parts are generally different, so it is necessary to leave gaps 1-44 between adjacent segments in these regions to prevent them from influencing each other. Similarly, in the second electrode structure 1-42, there are gaps 1-44 between at least some adjacent segments. Applying a driving voltage to either the first electrode structure 1-41 or the second electrode structure 1-42 individually can generate an accurate spatial potential distribution, but it causes diffraction. In contrast, in this embodiment, one of the first electrode structure 1-41 and the second electrode structure 1-42 covers the gap 1-44 of the other, and by applying voltage to both electrode structures simultaneously, the diffraction phenomenon of the liquid crystal optical device can be eliminated. The liquid crystal optical device in this embodiment includes, but is not limited to, liquid crystal lenses and liquid crystal Fresnel lenses.

[0016] The third drive voltage and the first drive voltage may be the same or different. If the third drive voltage and the first drive voltage are different, the third drive voltage may be greater than or less than the first drive voltage. The fourth drive voltage and the second drive voltage may be the same or different. If the fourth drive voltage and the second drive voltage are different, the fourth drive voltage may be greater than or less than the second drive voltage. For example, the first drive voltage may be set to 1.6Vrms, the second drive voltage may be set to 2.5Vrms, the third drive voltage may be set to 1.65Vrms, and the fourth drive voltage may be set to 2.55Vrms.

[0017] In a selective but advantageous embodiment, in this embodiment, the projection of the first electrode structure 1-41 and the gap 1-44 between adjacent segments of the second electrode structure 1-42 overlap. By employing the aforementioned structure, not only can diffraction phenomena be eliminated, but the capacitance effect between the two upper and lower electrode structures can also be effectively reduced. In a selective but advantageous embodiment, in this embodiment, the first electrode structure 1-41 includes a first electrode wire 1-411 that extends from the end near the center of the second electrode layer 1-4 toward the end near the edge of the second electrode layer 1-4, with one end used to receive a first drive voltage and the other end used to receive a second drive voltage. In this embodiment, by extending the first electrode wire 1-411 from the inside to the outside, the first electrode wire 1-411 can be distributed from the inside to the outside at each radial position in the second electrode layer 1-4, thereby generating a potential that exhibits a gradient distribution in the functional region of the liquid crystal optical device, and the shape of the first electrode wire 1-411 can deflect the liquid crystal material in the liquid crystal layer 1-3 under the action of an electric field to form a liquid crystal lens. The second electrode structure 1-42 includes a second electrode wire 1-421 that extends from the end near the center of the second electrode layer 1-4 towards the end near the edge of the second electrode layer 1-4, with one end used to receive a third drive voltage and the other end used to receive a fourth drive voltage. The second electrode structure 1-42 can not only adequately cover the gap 1-44 between adjacent segments of the first electrode structure 1-41, but may also adopt a structure with a shape similar to that of the first electrode structure 1-41 in order to match the potential distribution generated by the first electrode structure 1-41.

[0018] As shown in Figure 3, in a selective but advantageous embodiment, in this embodiment, the first electrode line 1-411 includes a plurality of concentric arc sections 1-431 of different radii, each of which is a segment of a single first electrode structure 1-41, with gaps 1-44 between adjacent arc sections in the first electrode line 1-411, and adjacent arc sections in the first electrode line are connected via connecting sections 1-432. As shown in Figures 3 and 6, the second electrode line 1-421 includes a plurality of concentric arc sections 1-431 of different radii, with gaps 1-44 between adjacent arc sections in the second electrode line, each concentric arc section 1-431 in the second electrode line 1-421 is a segment of a single second electrode structure 1-42, and adjacent arc sections in the second electrode line are connected via connecting sections 1-432. The projection of the arc portion of the first electrode structure onto the plane in which the second electrode structure is located, in whole or in part, covers the gap between adjacent concentric arc portions in the second electrode structure.

[0019] In this embodiment, the potential distribution at different radii of the liquid crystal lens is controlled by using concentric arc sections 1-431 of different radii. These concentric arc sections 1-431 are connected via connecting sections 1-432. After applying a first drive voltage and a second drive voltage to two drive voltage application positions on the first electrode line 1-411, an accurate parabolic potential distribution can be formed, resulting in a highly accurate liquid crystal lens. As shown in Figures 4 and 7, the concentric arc section 1-431 of the second electrode line 1-421 covers the gap 1-44 between the concentric arc sections 1-431 connected via the first electrode line 1-411, thereby effectively eliminating the diffraction phenomenon that occurs in the gap 1-44 between the concentric arc sections 1-431.

[0020] In specific implementation, the electrode wire structure of the concentric arc section 1-431 shown in Figures 3 and 4 may be used, or the electrode wire structure of the concentric arc section 1-431 shown in Figures 6 and 7 may be used. In Figures 6 and 7, electrode leads for applying a driving voltage to the first electrode wire 1-411 and the second electrode wire 1-421 are introduced at the center of the second electrode layer 1-4, and the connecting section 1-432 connecting adjacent concentric arc sections 1-431 is located on one side of the electrode lead and does not cross the electrode lead.

[0021] As shown in Figure 9, in a selective but advantageous embodiment, in this embodiment, the first electrode structure 1-41 includes a first potential distribution line 1-412 and a plurality of third electrode lines 1-413, each of which is a segment of the first electrode structure, the first drive voltage application position and the second drive voltage application position are provided on the first potential distribution line 1-412, one end of the third electrode line 1-413 is connected to the first potential distribution line 1-412, and the other opposite end is suspended in mid-air.

[0022] When the first drive voltage and the second drive voltage are applied to the first drive voltage application position and the second drive voltage application position on the first potential distribution line 1-412, respectively, and a constant voltage difference is maintained between the first drive voltage and the second drive voltage, the potential between the two drive voltage application positions on the first potential distribution line 1-412 exhibits a gradient distribution, and different positions on the first potential distribution line 1-412 have different potentials.

[0023] The third electrode wires 1-413 have a linear shape, and all of the plurality of third electrode wires 1-413 are parallel to the first direction. The connection point between the third electrode wires 1-413 and the first potential distribution wires 1-412 is located between the first drive voltage application position and the second drive voltage application position, and the connection points of different third electrode wires 1-413 and first potential distribution wires 1-412 are different. Since the first potential distribution wires 1-412 have a constant resistance, a voltage drop exists on the potential distribution wires. Because the magnitude of the resistance between the connection point between each third electrode wire 1-413 and the first potential distribution wire 1-412 and the first drive voltage application position is different, the magnitude of the potential at the connection point between each third electrode wire 1-413 and the first potential distribution wire 1-412 is also different. By controlling the connection position between the third electrode line 1-413 and the first potential distribution line 1-412, and the position through which the third electrode line 1-413 passes, the potential distribution of the liquid crystal optical device can be controlled.

[0024] As shown in Figure 10, the second electrode structure 1-42 includes a second potential distribution line 1-422 and a plurality of fourth electrode lines 1-423, the fourth electrode lines 1-423 having a linear shape, each fourth electrode line being a segment of the second electrode structure, the plurality of fourth electrode lines 1-423 all being parallel to the first direction, the third drive voltage application position and the fourth drive voltage application position are provided on the second potential distribution line 1-422, one end of the fourth electrode line 1-423 is connected to the first potential distribution line 1-412, and the other opposite end is suspended in mid-air.

[0025] The connection point between the fourth electrode line 1-423 and the second potential distribution line 1-422 is located between the third drive voltage application position and the fourth drive voltage application position, and the connection points between different fourth electrode lines 1-423 and second potential distribution lines 1-422 are different. After applying the third drive voltage and the fourth drive voltage to the third drive voltage application position and the fourth drive voltage application position of the second potential distribution line 1-422, respectively, and maintaining a constant voltage difference between the third drive voltage and the fourth drive voltage, the potential between the two drive voltage application positions of the second potential distribution line 1-422 exhibits a gradient distribution, and different positions on the second potential distribution line 1-422 have different potentials. Since the second potential distribution line 1-422 has a constant resistance, a voltage drop exists along the potential distribution line. Because the magnitude of the resistance differs between the connection point between each fourth electrode line 1-423 and the second potential distribution line 1-422 and the application point where the third drive voltage is applied, the magnitude of the potential at the connection point between each fourth electrode line 1-423 and the second potential distribution line 1-422 also differs. By controlling the connection point between the fourth electrode line 1-423 and the second potential distribution line 1-422 and the path of the third electrode line 1-413, the potential distribution of the liquid crystal optical device can be controlled.

[0026] As shown in Figure 11, the projection of the fourth electrode line 1-423 onto the plane where the third electrode line 1-413 is located covers the gap 1-44 between adjacent third electrode lines 1-413, and the projection of the third electrode line 1-413 onto the plane where the fourth electrode line 1-423 is located covers the gap 1-44 between adjacent fourth electrode lines 1-423. Specifically, when implemented, the projection of the third electrode line 1-413 covers the gap 1-44 between adjacent fourth electrode lines 1-423, and the projection of the fourth electrode line 1-423 covers the gap 1-44 between adjacent third electrode lines 1-413.

[0027] In a selective but advantageous embodiment, in this embodiment, the resistance value from the connection point of each third electrode line 1-413 on the first potential distribution line 1-412 to the first drive voltage application point, and the distance from the connection point of each third electrode line 1-413 and the first potential distribution line 1-412 to the first drive voltage application point in the second direction are parabolic. That is, the resistance value from the connection point of each third electrode line 1-413 to the first drive voltage application point is the first coordinate (y), and the distance from the connection point of the corresponding third electrode line 1-413 and the first potential distribution line 1-412 to the first drive voltage application point is the second coordinate (x). The curve obtained in the Cartesian coordinate system formed by the first and second coordinates is a parabola. That is, y = kx 2 Therefore, k is a real number that is not equal to 0.

[0028] The resistance value from the connection point of each fourth electrode line 1-423 on the second potential distribution line 1-422 to the third drive voltage application point, and the distance from the connection point of each fourth electrode line 1-423 and the second potential distribution line 1-422 in the second direction to the third drive voltage application point are parabolic. That is, if the resistance value from the connection point of each fourth electrode line 1-423 to the third drive voltage application point is the first coordinate (y), and the distance from the corresponding connection point of the fourth electrode line 1-423 and the second potential distribution line 1-422 to the third drive voltage application point is the second coordinate (x), the resulting curve is a parabola. The curve obtained in the Cartesian coordinate system formed by the first and second coordinates is a parabola. That is, y = kx¹ - ², where k is a real number not equal to 0. The second direction and the first direction are perpendicular.

[0029] Since the resistance value from the connection point of each third electrode line 1-413 on the first potential distribution line 1-412 to the first drive voltage application point, and the distance from the connection point of each third electrode line 1-413 in the second direction to the first drive voltage application point are parabolic, each third electrode line 1-413 can form a parabolic potential distribution in the surrounding space.

[0030] Since the resistance value from the connection point of each fourth electrode line 1-423 on the second potential distribution line 1-422 to the third drive voltage application point, and the distance from the connection point of each fourth electrode line 1-423 in the second direction to the third drive voltage application point are parabolic, each fourth electrode line 1-423 can form a parabolic potential distribution in the surrounding space.

[0031] After the projections of the first electrode structure 1-41 and the second electrode structure 1-42 described above mutually cover each other, not only can a high-precision column lens be formed, but diffraction phenomena can also be effectively eliminated.

[0032] In a selective but advantageous embodiment, in this embodiment, the first potential distribution line 1-412 and the second potential distribution line 1-422 are potential distribution lines of uniform width, and the length from the connection point with each third electrode line 1-413 on the first potential distribution line 1-412 to the first drive voltage application point and the distance from the connection point with each third electrode line 1-413 in the second direction to the first drive voltage application point are in a parabolic relationship, and the length from the connection point with each fourth electrode line 1-423 on the second potential distribution line 1-422 to the first drive voltage application point and the distance from the connection point with each fourth electrode line 1-423 in the second direction to the third drive voltage application point are in a parabolic relationship.

[0033] In this embodiment, both the first potential distribution line 1-412 and the second potential distribution line 1-422 are potential distribution lines of uniform width. In this way, the resistance values ​​of each portion on the first potential distribution line 1-412 and the second potential distribution line 1-422 are directly proportional to their length. By controlling the length of the first potential distribution line 1-412 at the connection point between the third electrode line 1-413 and the first potential distribution line 1-412, and the length of the second potential distribution line 1-422 at the connection point between the fourth electrode line 1-423 and the second potential distribution line 1-422, the potential controlled by the first electrode structure 1-41 and the second electrode structure 1-42 can be accurately distributed as a parabolic surface. In this embodiment, the width of the third electrode line 1-413 may be greater than or equal to the width of the fourth electrode line 1-423. As shown in Figures 12 to 14, the width of the third electrode line 1-413 may be even smaller than the width of the fourth electrode line 1-423. The first potential distribution line 1-412 and the second potential distribution line 1-422 may be on the same side (see Figure 14) or on different sides (see Figure 15), and there is no restriction on this here.

[0034] As shown in Figures 16 and 19, in this embodiment, the first electrode structure includes a third potential distribution line 1-414 extending from the center of the liquid crystal lens toward the edge of the liquid crystal lens, with each of its opposing ends being a first drive voltage application position and a second drive voltage application position, and a plurality of concentric arc electrode lines 1-46, each of which are segments of the first electrode structure.

[0035] As shown in Figures 17 and 20, the second electrode structure includes a fourth potential distribution line 1-424 extending from the center of the liquid crystal lens toward the edge of the liquid crystal lens, with each of its opposing ends being a third drive voltage application position and a fourth drive voltage application position, and a plurality of concentric arc electrode lines 1-46, each being a segment of the first electrode.

[0036] As shown in Figures 18, 21, and 22, the projection of the concentric arc electrode lines 1-46 in the first electrode structure onto the plane in which the second electrode structure is located covers the projection between two adjacent concentric arc electrode lines 1-46 in the second electrode structure. When it is necessary to form a parabolic potential distribution, in this embodiment, one end of the concentric arc electrode line 1-46 is connected to the potential distribution line, and the other end is suspended in mid-air. If the positions where the first potential distribution line and each arc electrode line are connected are defined as potential extraction positions, then the resistance values ​​from each potential extraction position of the first potential distribution line to the first drive voltage application position and the distances from each potential extraction position along the radial direction of the liquid crystal lens to the first drive voltage application position exhibit a parabolic distribution.

[0037] In order to obtain a large-diameter liquid crystal lens and reduce the voltage difference between the drive voltages, the liquid crystal optical device of this embodiment may be configured as a liquid crystal Fresnel lens, as shown in Figures 22 to 26. In this case, as a selective but advantageous embodiment, as shown in Figure 22, the first electrode structure 1-41 includes a plurality of first electrode units arranged sequentially from the center to the edge of the second electrode layer 1-4, and the surface electrode and each of the electrode units deflect the liquid crystal in the liquid crystal layer 1-3 under the driving of the first drive voltage and the second drive voltage to form a liquid crystal Fresnel lens.

[0038] As shown in Figure 23, the second electrode structure 1-42 includes a plurality of first electrode units arranged sequentially from the center to the edge of the second electrode layer 1-4. The surface electrode and each of the first electrode units deflect the liquid crystal in the liquid crystal layer 1-3 under the driving of the third and fourth driving voltages to form a liquid crystal Fresnel lens. Each first electrode unit is controlled to deflect the liquid crystal material in one annular region, and the delay effect on the phase of the light rays that pass through after deflection is the same as that of one annular region of the Fresnel lens. Thus, under the combined action of all the first electrode units, the liquid crystal material is deflected to form a liquid crystal Fresnel lens.

[0039] In a selective but advantageous embodiment, in this embodiment, the first electrode structure 1-41 includes a plurality of second electrode units arranged along a first direction, wherein the surface electrode and each of the electrode units deflect the liquid crystal in the liquid crystal layer 1-3 under the driving of the first and second driving voltages to form a liquid crystal Fresnel column lens, and the second electrode structure 1-42 includes a plurality of second electrode units arranged along a first direction, wherein the surface electrode and each of the second electrode units deflect the liquid crystal in the liquid crystal layer 1-3 under the driving of the third and fourth driving voltages to form a liquid crystal Fresnel column lens.

[0040] The liquid crystal Fresnel column lens formed by the aforementioned structure not only has high potential distribution accuracy but can also effectively eliminate diffraction phenomena. For the effect of potential distribution using the liquid crystal lens in this embodiment, please refer to Figures 27, 28, and 29.

[0041] <Example 2> As shown in Figure 30, this embodiment provides a liquid crystal optical device, which mainly comprises a first substrate 2-1, a first electrode layer 2-2, a liquid crystal layer 2-3, a second electrode layer 2-4, and a second substrate 2-5, which are sequentially stacked.

[0042] The first electrode layer 2-2 may be provided as needed, for example, as a surface electrode, forming an equipotential plane, or as various patterned electrode configurations; there are no limitations here.

[0043] As shown in Figure 31, the second electrode layer 2-4 includes a first insulating layer 2-42 and an electrode unit 2-41. As shown in Figure 30, the electrode unit 2-41 includes a first electrode structure 2-411 and a second electrode structure 2-412 located on opposite sides of the first insulating layer 2-42. The electrode unit 2-41 is provided with a first drive voltage application position for receiving a first drive voltage V1 and a second drive voltage application position for receiving a second drive voltage V2. The first and second drive voltages are different and the voltage difference is used to drive the liquid crystal molecules to deflect them. For example, in the case of a positive-type liquid crystal material arranged along a plane, a positive lens is obtained when the first drive voltage V1 = 1.6 Vrms and the second drive voltage V2 = 2.0 Vrms, and a negative lens is obtained when V1 = 2.0 Vrms and V2 = 1.6 Vrms.

[0044] In this embodiment, the electrode unit 2-41 is distributed in two different planes; that is, one part of the electrode unit 2-41 is located on the side farther from the liquid crystal layer of the first insulating layer 2-42, and the other part is located on the side closer to the liquid crystal layer of the first insulating layer 2-42. For the sake of explanation, the portion of the electrode unit 2-41 distributed on the same side of the first insulating layer 2-42 is called a sub-part; that is, with respect to the first electrode structure 2-411 and the second electrode structure 2-412 described above, the first electrode structure 2-411 may be provided on the side farther from the liquid crystal layer of the first insulating layer 2-42 and the second electrode structure 2-412 may be provided on the side closer to the liquid crystal layer of the first insulating layer 2-42, or the second electrode structure 2-412 may be provided on the side farther from the liquid crystal layer of the first insulating layer 2-42 and the first electrode structure 2-411 may be provided on the side closer to the liquid crystal layer of the first insulating layer 2-42, and this is not limited here. The electrode unit 2-41 of this embodiment includes a first electrode structure 2-411 and a second electrode structure 2-412 distributed on opposite sides of the first insulating layer 2-42. The first electrode structure 2-411 and the second electrode structure 2-412 belong to the same overall electrode unit 2-41, are electrically connected to each other, and can generate potentials exhibiting a gradient distribution under the driving of a first drive voltage and a second drive voltage. In this way, the distribution of spatial potential can be controlled by controlling the spatial position of the electrode unit 2-41.

[0045] The first electrode structure 2-411 includes at least two first segments, with a gap 2-47 between at least some adjacent first segments; the second electrode structure 2-412 includes at least two second segments, with a gap 2-47 between at least some adjacent second segments; the projection of the second electrode structure 2-412 onto a first reference plane at least partially covers the gap 2-47 between adjacent first segments in the first electrode structure 2-411; the projection of the first electrode structure 2-411 onto a first reference plane at least partially covers the gap 2-47 between adjacent second segments in the second electrode structure 2-412; the first reference plane is the upper or lower surface of the first electrode structure 2-411; and the second reference plane is the upper or lower surface of the second electrode structure 2-412.

[0046] In some regions of the first electrode structure 2-411, it is necessary to create a potential difference between different parts, so a gap 2-47 needs to be left between adjacent first segments in these regions to prevent them from influencing each other.

[0047] Similarly, in some regions of the second electrode structure 2-412, it is necessary to create a potential difference between different parts, so a gap 2-47 needs to be left between adjacent second segments in these regions to prevent them from influencing each other.

[0048] The projection of one sub-part may partially cover the gap 2-47 of the other sub-part, or it may completely cover the gap 2-47 of the other sub-part. Complete coverage means that the projection of one sub-part completely shields the gap 2-47 of the other sub-part, in which case the area occupied by the projection of the sub-part may be larger than the gap 2-47 or exactly equal to the gap 2-47. Partial coverage means that the projection of one sub-part occupies only a portion of the gap 2-47.

[0049] The first insulating layer 2-42 is provided with vias 2-43 that penetrate the first insulating layer 2-42, and a connection portion is provided in the vias 2-43, and adjacent first segments and second segments are electrically connected via the connection portion. That is, each segment of the electrode unit 2-41 is alternately provided on the side of the first insulating layer 2-42 closer to the liquid crystal layer and the side further away from the liquid crystal layer. For example, the previous segment (i.e., the first segment) in the electrode unit 2-41 is on the side of the first insulating layer 2-42 closer to the liquid crystal layer, and the next segment to be connected (i.e., the second segment) is provided on the side of the first insulating layer 2-42 further away from the liquid crystal layer. The aforementioned previous segment and next segment are electrically connected via the connection portion provided in the vias 2-43.

[0050] Furthermore, for example, in electrode unit 2-41, the previous segment (i.e., the second segment) is located on the side of the first insulating layer 2-42 that is far from the liquid crystal layer, and the next segment to be connected (i.e., the first segment) is located on the side of the first insulating layer 2-42 that is closer to the liquid crystal layer. The aforementioned previous segment and next segment are electrically connected via a connection provided in via 2-43. The position and shape of via 2-43 may be provided as needed; for example, Figures 34 and 35 show two other configurations of via 2-43.

[0051] In this embodiment, the electrode units 2-41 are distributed on both sides of the first insulating layer 2-42, allowing for a sufficient gap 2-47 to be maintained between adjacent portions of the electrode units 2-41 in the same layer. Furthermore, the projection of a sub-portion on one side of the first insulating layer 2-42 of the electrode unit 2-41 covers the gap 2-47 between adjacent segments on the other side, thereby effectively eliminating diffraction phenomena caused by the gap 2-47 between adjacent segments and significantly improving the optical effect of the liquid crystal optical device.

[0052] In a selective but advantageous embodiment, in this embodiment, the projection of the first electrode structure 2-411 on the second reference plane and the gap 2-47 between adjacent segments of the second electrode structure 2-412 overlap.

[0053] By adopting the aforementioned structure, the projection of the first electrode structure 2-411 and the gap 2-47 between adjacent segments of the second electrode structure 2-412 completely overlap. By adopting the aforementioned structure, not only can diffraction phenomena be eliminated, but the capacitance effect between the two upper and lower sub-parts can also be effectively reduced.

[0054] As shown in Figures 32 and 33, in one example, in this embodiment, the first electrode structure 2-411 includes a plurality of concentric arc portions 2-44 of different radii, which constitute one first segment, and gaps 2-47 are provided between adjacent concentric arc portions 2-44 in the first electrode structure 2-411, and the number of concentric arc portions 2-44 in the first electrode structure 2-411 is two or more.

[0055] The second electrode structure 2-412 includes a plurality of concentric arc portions 2-44 of different radii, which constitute one second segment, and gaps 2-47 are provided between adjacent concentric arc portions 2-44 in the second electrode structure 2-412, and adjacent concentric arc portions 2-44 in the first electrode structure 2-411 and the second electrode structure 2-412 are electrically connected via connectors. The number of concentric arc portions 2-44 in the second electrode structure 2-412 is two or more.

[0056] In this embodiment, the potential distribution at different radii of the liquid crystal lens is controlled using concentric arc portions 2-44 of different radii in the electrode unit 2-41. Adjacent concentric arc portions 2-44 are located on opposite sides of the first insulating layer 2-42 and are electrically connected via connections provided in vias 2-43. This allows the potential to be attenuated or amplified one turn at a time along the electrode unit 2-41 outward. Overall, the electrode unit 2-41 can form a potential distribution of a rotating paraboloid in space under the action of the first and second drive voltages.

[0057] The projection of the concentric arc portion 2-44 belonging to the first electrode structure 2-411 onto the plane where the second electrode structure 2-412 is located at least partially covers the gap 2-47 between adjacent concentric arc portions 2-44 belonging to the second electrode structure 2-412, and the projection of the concentric arc portion 2-44 belonging to the first electrode structure 2-411 onto the second reference plane at least partially covers the gap 2-47 between adjacent concentric arc portions 2-44 belonging to the second electrode structure 2-412, thereby effectively eliminating the diffraction phenomenon that occurs in the gap 2-47 between concentric arc portions 2-44 in the same layer.

[0058] As shown in Figures 36, 37, and 38, in this embodiment, a liquid crystal column lens can be further realized, in which case the electrode unit 2-41 includes a potential distribution line 2-45 and at least two electrode lines 2-431, one part of the potential distribution line 2-45 belongs to the first electrode structure 2-411 and the other part belongs to the second electrode structure 2-412, one part of the electrode line 2-431 belongs to the first electrode structure 2-411 and the other part of the electrode line 2-431 belongs to the second electrode structure 2-412, and Each electrode wire 2-431 belonging to electrode structure 2-411 is one first segment, and each electrode wire 2-431 belonging to second electrode structure 2-412 is one second segment. The electrode wires 2-431 have a linear shape, and all of the plurality of electrode wires 2-431 are parallel to the first direction. The first drive voltage application position and the second drive voltage application position are provided on the potential distribution line 2-45, one end of the electrode wire 2-431 is connected to the potential distribution line 2-45, and the other opposite end floats in the air.

[0059] When the first and second drive voltages are applied to the first and second drive voltage application positions on the potential distribution line 2-45, respectively, and a constant voltage difference is maintained between the first and second drive voltages, the potential between the two drive voltage application positions on the potential distribution line 2-45 exhibits a gradient distribution, and different positions on the potential distribution line 2-45 have different potentials.

[0060] In this embodiment, the connection position between the electrode wire 2-431 and the potential distribution wire 2-45 is between the first drive voltage application position and the second drive voltage application position, and the connection positions between different electrode wires 2-431 and potential distribution wires 2-45 are different. Since the potential distribution line 2-45 has a constant resistance, a voltage drop exists along the potential distribution line 2-45. Because the magnitude of the resistance differs between the connection point between each electrode line 2-431 and the potential distribution line 2-45 and the first drive voltage application point, the magnitude of the potential at the connection point between each electrode line 2-431 and the potential distribution line 2-45 also differs. By controlling the connection point between the first electrode line and the potential distribution line 2-45 and the path of the electrode line 2-431, the potential distribution of the liquid crystal optical device can be controlled.

[0061] The projection of electrode wires 2-431 belonging to the first electrode structure 2-411 onto the second reference plane covers the gap 2-47 between adjacent electrode wires 2-431 belonging to the second part, and the projection of electrode wires 2-431 belonging to the second electrode structure 2-412 onto the first reference plane covers the gap 2-47 between adjacent electrode wires 2-431 belonging to the first part. In this embodiment, by having the projections of electrode wires 2-431 belonging to the two sub-parts cover the gap 2-47 between the electrode wires 2-431, the capacitive effect generated in the electrode unit 2-41 after the driving voltage is applied can be effectively eliminated. The adjacent electrode wires 2-431 on both sides can be electrically connected by a connection provided in a via.

[0062] As an example, in this embodiment, the resistance value from the connection point between each electrode line 2-431 on the potential distribution line 2-45 and the first drive voltage application point, and the distance from the connection point between each electrode line 2-431 and the potential distribution line 2-45 in the second direction to the first drive voltage application point are in a parabolic or linear relationship, and the second direction and the first direction are perpendicular to each other.

[0063] As shown in Figure 36, if the resistance value from the connection point of each electrode line 2-431 on the potential distribution line 2-45 to the first drive voltage application point and the distance from the connection point of each electrode line 2-431 and the potential distribution line 2-45 to the first drive voltage application point in the second direction are in a parabolic relationship, then if the resistance value from the connection point of each electrode line 2-431 to the first drive voltage application point is taken as the first coordinate (y), and the distance from the connection point of the corresponding electrode line 2-431 and the potential distribution line 2-45 to the first drive voltage application point is taken as the second coordinate (x), then the function image obtained in the Cartesian coordinate system formed by the first and second coordinates is a parabola. That is, y = kx 2 The following conditions are met, and k is a real number not equal to 0.

[0064] As shown in Figures 37 and 38, if the resistance value from the connection point of each electrode line 2-431 on the potential distribution line 2-45 to the first drive voltage application point and the distance from the connection point of each electrode line 2-431 and the potential distribution line 2-45 to the first drive voltage application point in the second direction are linearly related, then the resistance value from the connection point of each electrode line 2-431 to the first drive voltage application point is taken as the first coordinate (y), and the distance from the connection point of the corresponding electrode line 2-431 and the potential distribution line 2-45 to the first drive voltage application point is taken as the second coordinate (x), and the function image obtained in the Cartesian coordinate system formed by the first and second coordinates is a straight line. That is, it satisfies y = ax + b, where a is a real number not equal to 0 and b is any real number. The position of via 2-43 may be provided as needed, and Figures 37 and 38 show two different via 2-43 installation configurations in the case of a linear relationship.

[0065] If the resistance value from the connection point of each electrode line 2-431 on the potential distribution line 2-45 to the first drive voltage application point and the distance from the connection point of each electrode line 2-431 in the second direction to the first drive voltage application point are in a parabolic relationship, then each electrode line 2-431 can jointly form a potential distribution on a parabolic surface in the surrounding space.

[0066] If the resistance value from the connection point of each electrode line 2-431 on the potential distribution line 2-45 to the first drive voltage application point is linearly related to the distance from the connection point of each electrode line 2-431 in the second direction to the first drive voltage application point, then each electrode line 2-431 can jointly form a tapered potential distribution in the surrounding space.

[0067] In this embodiment, the potential distribution line 2-45 is a potential distribution line 2-45 with a uniform width, and the length from the connection point with each electrode line 2-431 on the potential distribution line 2-45 to the first drive voltage application point and the distance from the connection point of each electrode line 2-431 in the second direction to the first drive voltage application point are in a parabolic or linear relationship.

[0068] In this embodiment, a potential distribution line 2-45 with a uniform width is used, and the resistance value of each part of the potential distribution line 2-45 is made directly proportional to its length. By controlling the length of the potential distribution line 2-45 at the connection point between the electrode line 2-431 and the potential distribution line 2-45, the potential controlled by the electrode unit 2-41 can be made into an accurate parabolic or tapered surface distribution.

[0069] In order to obtain a large-diameter liquid crystal lens and reduce the voltage difference between the drive voltages, the liquid crystal optical device of this embodiment may be configured as a liquid crystal Fresnel lens, as shown in Figures 39 to 40. In this case, as a selective but advantageous embodiment, the second electrode layer 2-4 includes a plurality of electrode units 2-41 arranged sequentially from the center to the edge of the second electrode layer 2-4, which deflect the liquid crystal in the liquid crystal layer under the driving of the first drive voltage and the second drive voltage, respectively, to form a liquid crystal Fresnel lens. The electrode units 2-41 may be those having concentric arc portions 2-44.

[0070] Each electrode unit 2-41 controls the deflection of the liquid crystal material in one annular region. The delay effect on the phase of the light ray passing through after deflection is the same as that of one annular region of a Fresnel lens. Thus, under the combined action of all electrode units 2-41, the liquid crystal material is deflected to form a liquid crystal Fresnel lens. The liquid crystal Fresnel lens formed by the above structure not only has high potential distribution accuracy but can also effectively eliminate diffraction phenomena.

[0071] Furthermore, this embodiment can also realize a liquid crystal Fresnel column lens, in which case the second electrode layer 2-4 includes a plurality of electrode units 2-41 arranged along the first direction, which deflect the liquid crystal in the liquid crystal layer under the driving of the first and second driving voltages, respectively, to form a liquid crystal Fresnel column lens. The electrode unit 2-41 may be the aforementioned electrode unit 2-41 having a potential distribution line 2-45 and a first electrode. The liquid crystal Fresnel column lens formed by adopting the above structure not only has high potential distribution accuracy but can also effectively eliminate diffraction phenomena.

[0072] In this embodiment, a high-impedance film, a high-dielectric constant layer, or a potential buffer layer may be provided on the side of the first electrode unit facing the insulating layer, or a high-impedance film, a high-dielectric constant layer, or a potential buffer layer may be provided on the side of the first electrode unit away from the insulating layer, and / or A high-impedance film, a high-dielectric-constant layer, or a potential buffer layer may be provided on the side of the second electrode unit facing the insulating layer, or a high-impedance film, a high-dielectric-constant layer, or a potential buffer layer may be provided on the side of the second electrode unit away from the insulating layer.

[0073] In this embodiment, by providing the aforementioned high-impedance film, high-dielectric constant layer, or potential buffer layer on the liquid crystal lens, the potential distribution between adjacent portions of the first electrode unit and / or the second electrode unit can be made smoother. In this embodiment, the first electrode layer 2-2 may be a surface electrode.

[0074] <Example 3> This embodiment provides an electronic product comprising a control circuit electrically connected to the liquid crystal optical device and the liquid crystal optical device described in Embodiments 1 and 2. The electronic product includes, but is not limited to, imaging devices, display devices, mobile phones, AR devices, VR devices, glasses-free 3D products, and wearable devices. [Explanation of symbols]

[0075] Components and their numbers in Figures 1 to 29: 1-1 First board 1-2 1st electrode layer 1-3 Liquid crystal layer 1-4 2nd electrode layer 1-41 First electrode structure 1-411 1st electrode wire 1-412 1st potential distribution line 1-413 Third electrode wire 1-414 Third potential distribution line 1-42 Second electrode structure 1-421 2nd electrode wire 1-422 2nd potential distribution line 1-423 4th electrode wire 1-424 4th potential distribution line 1-431 Concentric arc section 1-432 Connection part 1-44 Gap 1-45 Insulating layer 1-46 Concentric arc electrode lines 1-5 Second substrate Components and their numbers in Figures 30-40 and Figures 1-30: 2-1 First substrate 2-2 First electrode layer 2-3 Liquid crystal layer 2-4 2nd electrode layer 2-41 Electrode Unit 2-411 1st electrode structure 2-412 First segment, second electrode structure 2-431 Second segment, electrode wire 2-42 First insulating layer 2-43 Beer 2-44 Concentric arc section 2-45 Potential distribution line 2-47 Gap 2-491 First electrode lead 2-492 Second Electrode Lead 2-5 Second board

Claims

1. A liquid crystal optical device comprising a first substrate, a first electrode layer, a liquid crystal layer, a second electrode layer, and a second substrate, which are arranged in a stack in that order. The second electrode layer includes an insulating layer, a first electrode structure, and a second electrode structure, wherein one of the first electrode structure and the second electrode structure is located on the surface of the insulating layer facing the liquid crystal layer, and the other is located on the surface of the insulating layer away from the liquid crystal layer. The first electrode structure is provided with a first drive voltage application position for receiving a first drive voltage and a second drive voltage application position for receiving a second drive voltage, and the first drive voltage and the second drive voltage are different. The second electrode structure is provided with a third drive voltage application position for receiving a third drive voltage and a fourth drive voltage application position for receiving a fourth drive voltage, and the third drive voltage and the fourth drive voltage are different. The first electrode structure includes at least two segments, and there is a gap between at least some adjacent segments in the first electrode structure. The second electrode structure includes at least two segments, and there is a gap between at least some adjacent segments in the second electrode structure. The projection of the second electrode structure onto the plane in which the first electrode structure is located, in whole or in part, covers the gap between adjacent segments of the first electrode structure, and the projection of the first electrode structure onto the plane in which the second electrode structure is located, in whole or in part, covers the gap between adjacent segments of the second electrode structure. The first electrode layer is provided with a third electrode structure which is a surface electrode. The first electrode structure includes a first electrode wire extending from an end near the center of the second electrode layer toward an end near the edge of the second electrode layer, with one end used to receive a first drive voltage and the other end used to receive a second drive voltage. The liquid crystal optical device is characterized in that the second electrode structure includes a second electrode line that extends from an end near the center of the second electrode layer toward an end near the edge of the second electrode layer, with one end used to receive a third drive voltage and the other end used to receive a fourth drive voltage.

2. The liquid crystal optical device according to claim 1, characterized in that the projection of the first electrode structure on the plane in which the second electrode structure is located and the gap between adjacent segments of the second electrode structure overlap.

3. The first electrode line includes a plurality of concentric arcs of different radii, each of which is a segment of the first electrode structure, with gaps between adjacent concentric arcs in the first electrode line, and adjacent concentric arcs in the first electrode line are connected via connecting portions. The liquid crystal optical device according to claim 1, wherein the second electrode line includes a plurality of concentric arc portions of different radii, each of which is a segment of the second electrode structure, a gap is provided between adjacent concentric arc portions in the second electrode line, and adjacent concentric arc portions in the second electrode line are connected via a connecting portion.

4. The first electrode structure is, A third potential distribution line extends from the center of the liquid crystal lens toward the edge of the liquid crystal lens, with opposing ends being a first drive voltage application position and a second drive voltage application position, and having a resistance for forming a potential gradient between the first drive voltage and the second drive voltage. Each of the following is included: a plurality of concentric arc electrode lines which are segments of the first electrode structure, The second electrode structure is, A fourth potential distribution line extends from the center of the liquid crystal lens toward the edge of the liquid crystal lens, with opposing ends being a third drive voltage application position and a fourth drive voltage application position, and having a resistance for forming a potential gradient between the third drive voltage and the fourth drive voltage. The liquid crystal optical device according to claim 1, characterized in that it includes a plurality of concentric arc electrode lines, each of which is a second electrode structure segment.

5. The first electrode structure includes a plurality of first electrode units, each of which has a position for receiving the first drive voltage and a position for receiving the second drive voltage, and each of the plurality of first electrode units forms a liquid crystal Fresnel lens by deflecting the liquid crystal in the liquid crystal layer under the driving of the first drive voltage and the second drive voltage, and is arranged sequentially from the center toward the edge of the second electrode layer. The liquid crystal optical device according to claim 1, wherein the second electrode structure includes a plurality of second electrode units, each of which has a position for receiving the third drive voltage and a position for receiving the fourth drive voltage, and which deflects the liquid crystal in the liquid crystal layer under the driving of the third drive voltage and the fourth drive voltage to form a liquid crystal Fresnel lens, and is arranged sequentially from the center toward the edge of the second electrode layer.

6. The insulating layer of the second electrode layer is the first insulating layer, The second electrode layer includes at least one electrode unit comprising the first electrode structure and the second electrode structure, respectively, located on opposite sides of the first insulating layer. The electrode unit is provided with a first drive voltage application position for receiving a first drive voltage and a second drive voltage application position for receiving a second drive voltage, wherein the first drive voltage and the second drive voltage are different, the upper or lower surface of the first electrode structure is used as a first reference plane, the upper or lower surface of the second electrode structure is used as a second reference plane, and the projection of the first electrode structure on the second reference plane covers the gap of the second electrode structure, as described in claim 1.

7. The first electrode structure includes at least two first segments, with a gap between at least some of the adjacent first segments. The second electrode structure includes at least two second segments, with a gap between at least some of the adjacent second segments. The projection of the second electrode structure onto the first reference plane at least partially covers the gap between adjacent first segments in the first electrode structure, and the projection of the first electrode structure onto the second reference plane at least partially covers the gap between adjacent second segments in the second electrode structure. The liquid crystal optical device according to claim 6, characterized in that the first insulating layer is provided with vias penetrating the first insulating layer, the vias are provided with connecting portions, and adjacent first segments and second segments are electrically connected via the connecting portions.

8. The liquid crystal optical device according to claim 6, characterized in that the projection of the first electrode structure on the second reference plane and the gap between adjacent second segments overlap.

9. The first electrode structure includes a plurality of concentric arc portions of different radii, each of which is one of the first segments, and gaps are provided between adjacent concentric arc portions in the first electrode structure. The second electrode structure includes a plurality of concentric arcs of different radii, each of which is one of the second segments, with gaps between adjacent concentric arcs in the second electrode structure, and adjacent concentric arcs in the first electrode structure and the second electrode structure are electrically connected via connecting portions. The projection of the concentric arc portion belonging to the first electrode structure onto the second reference plane at least partially covers the gap between adjacent concentric arc portions belonging to the second electrode structure. The liquid crystal optical device according to claim 7, characterized in that the projection of the concentric arc portion belonging to the second electrode structure onto the first reference plane at least partially covers the gap between adjacent concentric arc portions belonging to the first electrode structure.

10. The aforementioned second electrode layer is The liquid crystal optical device according to claim 6, further comprising a plurality of electrode units arranged sequentially from the center toward the edge of a second electrode layer, which deflect the liquid crystal in the liquid crystal layer under the driving of the first drive voltage and the second drive voltage, respectively, to form a liquid crystal Fresnel lens.

11. An electronic product comprising a control circuit electrically connected to the liquid crystal optical device and the liquid crystal optical device described in claim 1.

Images