Liquid crystal lens assembly and display device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2026-02-28
- Publication Date
- 2026-05-29
Smart Images
Figure CN121742082B_ABST
Abstract
Description
Technical Field
[0001] This disclosure belongs to the field of display technology, and specifically relates to a liquid crystal lens assembly and a display device. Background Technology
[0002] Naked-eye 3D (3D) technology is mainly divided into two categories: reproducing binocular parallax and original light field. The principle of reproducing binocular parallax is to allow the left and right eyes to receive two views with parallax respectively, and the two images are combined in the brain to produce a 3D effect. Thus, by performing a series of processes on the screen, the image with parallax is mapped to the left and right eyes respectively, and a 3D image can be generated.
[0003] Naked-eye 3D display based on liquid crystal lenses is a technical solution that uses a 2D display panel with liquid crystal lenses to reproduce binocular parallax and naked-eye 3D. However, current naked-eye 3D display products based on liquid crystal lenses can only achieve 3D display in a single direction, such as a horizontal or vertical 3D effect, and cannot achieve 3D display in both portrait and landscape modes of the same product. Summary of the Invention
[0004] This disclosure aims to at least solve one of the technical problems existing in the prior art, and to provide a liquid crystal lens assembly and a display device.
[0005] In a first aspect, the technical solution adopted to solve the technical problem of this disclosure is a liquid crystal lens assembly, comprising: a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer disposed between the first substrate and the second substrate, a plurality of first electrodes disposed on the side of the first substrate near the liquid crystal layer, a plurality of second electrodes disposed on the side of the plurality of first electrodes near the liquid crystal layer, and a third electrode disposed on the side of the liquid crystal layer near the second substrate.
[0006] The plurality of first electrodes are divided into a plurality of first electrode groups, each first electrode group including a plurality of first electrodes arranged sequentially along a first direction and extending along a second direction, wherein the first direction and the second direction are intersected; the plurality of second electrodes are divided into a plurality of second electrode groups, each second electrode group including a plurality of second electrodes arranged sequentially along the second direction and extending along the first direction.
[0007] A voltage is applied to each of the first electrodes and the third electrode in each of the first electrode groups to drive the liquid crystal molecules in the liquid crystal layer to deflect, forming a plurality of first liquid crystal lenses arranged sequentially along the first direction; the first liquid crystal lenses extend along the second direction;
[0008] A voltage is applied to each of the second electrodes and the third electrode in each of the second electrode groups to drive the liquid crystal molecules in the liquid crystal layer to deflect, forming a plurality of second liquid crystal lenses arranged sequentially along the second direction; the second liquid crystal lenses extend along the first direction.
[0009] In some embodiments, the second width of the second electrode in the second direction is less than or equal to the first width of the first electrode in the first direction.
[0010] In some embodiments, the first electrode has a first side and a second side disposed opposite to each other in the first direction, and the second electrode has a third side and a fourth side disposed opposite to each other in the second direction; the orthographic projections of the first side and the second side on the first substrate intersect with the orthographic projections of the third side and the fourth side on the first substrate to define an overlapping area.
[0011] The second electrode located in the overlapping region has at least one opening extending through its thickness direction.
[0012] In some embodiments, the opening is a through hole; there is a certain distance between the sidewall of the through hole and the edge of the second electrode.
[0013] In some embodiments, the opening includes a groove with the opening facing the second direction; the groove includes two grooves and is disposed opposite to each other in the second direction.
[0014] In some embodiments, the opening further includes a through hole, and there is a certain distance between the sidewall of the through hole and the bottom wall of the groove.
[0015] In some embodiments, the number of openings includes a plurality; the total area of the orthographic projection of the plurality of openings on the first substrate accounts for 50% to 80% of the area of the overlapping region.
[0016] In some embodiments, the second electrode includes a conductor portion and a semiconductor portion; the orthographic projection of the conductor portion on the first substrate does not overlap with the orthographic projection of the first electrode on the first substrate, and the orthographic projection of the semiconductor portion on the first substrate overlaps with the orthographic projection of the first electrode on the first substrate.
[0017] In some embodiments, the semiconductor section includes a P-type semiconductor, an intrinsic semiconductor, and an N-type semiconductor arranged sequentially along the first direction.
[0018] In some embodiments, the first electrode and the second electrode are both strip-shaped transparent electrodes, and the third electrode is a planar transparent electrode.
[0019] In some embodiments, the first width is between 1.5 micrometers and 4 micrometers; the second width is between 1.5 micrometers and 4 micrometers.
[0020] In some embodiments, the liquid crystal lens assembly further includes a first insulating layer disposed between the first electrode and the second electrode, and a second insulating layer disposed between the second electrode and the liquid crystal layer.
[0021] Secondly, embodiments of this disclosure also provide a display device, including a liquid crystal lens assembly as described in any one of the first aspects, and a display panel disposed on the backlight side of the liquid crystal lens assembly.
[0022] In some embodiments, the display panel is a liquid crystal display panel; the display device further includes a color filter substrate, a first polarizer, a second polarizer, a third polarizer, an adhesive layer, and a backlight module;
[0023] The color filter substrate is disposed on the side of the display panel near the liquid crystal lens assembly;
[0024] The first polarizer is disposed on the side of the display panel opposite to the color filter substrate;
[0025] The second polarizer is disposed on the side of the color filter substrate opposite to the display panel;
[0026] The third polarizer is disposed on the side of the liquid crystal lens assembly near the display panel, and the second polarizer and the third polarizer are connected by the adhesive layer.
[0027] The backlight module is located on the side of the first polarizer that is away from the display panel.
[0028] In some embodiments, the display panel is an organic electroluminescent display panel; the display device further includes a fourth polarizer disposed between the display panel and the liquid crystal lens assembly. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the related liquid crystal lens assembly.
[0030] Figure 2 This is a schematic diagram of the structure of a liquid crystal lens assembly provided in an embodiment of the present disclosure.
[0031] Figure 3 This is a planar schematic diagram of the layer where the first electrode is located, provided in an embodiment of this disclosure.
[0032] Figure 4 This is a planar schematic diagram of the layer where the second electrode is located, as provided in an embodiment of this disclosure.
[0033] Figure 5 A planar schematic diagram showing the first and second electrodes intersecting in Example 1 provided in this embodiment of the present disclosure.
[0034] Figure 6 This is a schematic diagram of liquid crystal molecules deflecting to form a first liquid crystal lens in a first three-dimensional mode, as provided in an embodiment of this disclosure.
[0035] Figure 7 This is a schematic diagram of liquid crystal molecules deflecting to form a second liquid crystal lens in a second three-dimensional mode, as provided in an embodiment of this disclosure.
[0036] Figure 8 This is a planar schematic diagram showing the first and second electrodes intersecting in Example 2 provided in this embodiment of the present disclosure.
[0037] Figure 9 A planar schematic diagram showing the first and second electrodes intersecting in Example 3 provided in this embodiment of the present disclosure.
[0038] Figure 10 A planar schematic diagram showing the first and second electrodes intersecting in Example 4 provided for embodiments of this disclosure.
[0039] Figure 11 This is a planar schematic diagram showing the first and second electrodes intersecting in Example 5, which is an embodiment of this disclosure.
[0040] Figure 12 This is a schematic diagram of a display device provided in an embodiment of the present disclosure.
[0041] Figure 13 This is a schematic diagram of another display device provided in an embodiment of the present disclosure. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.
[0043] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.
[0044] In this disclosure, "multiple or several" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0045] It should be noted that in this disclosure, the first direction D1, the second direction D2, and the third direction Z intersect each other in pairs. The horizontal direction X, the vertical direction Y, and the third direction Z intersect each other in pairs. In this disclosure, the first direction D1 and the second direction D2 intersect each other in the plane of the base (the included angle is not fixed), the horizontal direction X and the vertical direction Y are perpendicular to each other in the plane of the base, and the third direction ZD3 is perpendicular to the plane of the base, but this does not constitute a limitation on this disclosure.
[0046] In related technologies, Figure 1 Here is a schematic diagram of the relevant liquid crystal lens assembly, such as Figure 1 As shown, the liquid crystal lens assembly 100 includes a first substrate 1 and a second substrate 2 disposed opposite to each other, a liquid crystal layer 3 disposed between the first substrate 1 and the second substrate 2, a plurality of driving electrodes 041 disposed on the side of the first substrate 1 near the liquid crystal layer 3, an insulating layer 5 disposed on the side of the plurality of driving electrodes 041 near the liquid crystal layer 3, and a common electrode 043 disposed on the side of the liquid crystal layer 3 near the second substrate 2.
[0047] The first substrate 1 includes a circuit structure electrically connected to the driving electrode 041 for applying a voltage signal to the driving electrode 041. The second substrate 2 includes a circuit structure electrically connected to the common electrode 043 for applying a voltage signal to the common electrode 043. The liquid crystal layer 3 includes multiple liquid crystal molecules. In the working state, a driving voltage is applied to the driving electrode 041, and a common voltage is applied to the common electrode 043. The two form an electric field, thereby driving the liquid crystal molecules at corresponding positions to deflect and form a microlens structure. This structure is used to control the projection of light from the display panel onto the left and right sides in the second direction D2, that is, the left and right direction of the horizontal screen, thereby realizing naked-eye 3D display in the horizontal screen state.
[0048] However, current glasses-free 3D display products based on liquid crystal lenses can only achieve 3D display in a single direction, such as... Figure 1 The 3D effect in landscape mode cannot be replicated in portrait mode. Therefore, the technology cannot achieve 3D display in both portrait and landscape modes for the same product, limiting its use on mobile phones, tablets, and other products, and making it unsuitable for users to flexibly adjust the product's orientation for glasses-free 3D display.
[0049] In view of this, the present disclosure provides a liquid crystal lens assembly 100 and a display device, which essentially enables the same product to perform naked-eye 3D display in different states (such as landscape, portrait, and tilted screens). The following is a detailed description in conjunction with specific embodiments and accompanying drawings.
[0050] Figure 2 This is a schematic diagram of the structure of a liquid crystal lens assembly provided in an embodiment of the present disclosure. Figure 3 This is a planar schematic diagram of the layer where the first electrode is located, provided in an embodiment of this disclosure. Figure 4 This is a plan view of the layer where the second electrode is located, according to an embodiment of this disclosure. Figure 5 A planar schematic diagram showing the first and second electrodes intersecting in Example 1 provided in this embodiment of the present disclosure.
[0051] like Figure 2 As shown, the liquid crystal lens assembly 100 includes a first substrate 1 and a second substrate 2 disposed opposite to each other, a liquid crystal layer 3 disposed between the first substrate 1 and the second substrate 2, a plurality of first electrodes 41 disposed on the side of the first substrate 1 near the liquid crystal layer 3, a plurality of second electrodes 42 disposed on the side of the plurality of first electrodes 41 near the liquid crystal layer 3, and a third electrode 43 disposed on the side of the liquid crystal layer 3 near the second substrate 2.
[0052] like Figures 3-5As shown, multiple first electrodes 41 are divided into multiple first electrode groups 41A. Each first electrode group 41A includes multiple first electrodes 41 arranged sequentially along a first direction D1 and extending along a second direction D2. For example, every k consecutive first electrodes 41 constitute a first electrode group 41A; k is an integer greater than 2, for example, k is 20. The specific value of k can be set according to the pixel size and the viewing distance of the human eye, and this disclosure does not limit it. Multiple second electrodes 42 are divided into multiple second electrode groups 42A. Each second electrode group 42A includes multiple second electrodes 42 arranged sequentially along a second direction D2 and extending along a first direction D1. For example, every k consecutive second electrodes 42 constitute a second electrode group 42A, for example, k is 20.
[0053] The first direction D1 and the second direction D2 are intersected. Optionally, the first direction D1 and the second direction D2 are perpendicular to each other on the plane of the first substrate 1. To eliminate moiré patterns, the extension direction of the first electrode 41 (i.e., the second direction D2) forms a certain angle with the vertical direction Y, for example, the optimal angle range for moiré-free surfaces is simulated to be 0~30°. Similarly, the extension direction of the second electrode 42 (i.e., the first direction D1) forms a certain angle with the horizontal direction X, for example, the optimal angle range for moiré-free surfaces is simulated to be 0~30°. In practical applications, the horizontal direction X can be understood as the length extension direction of the display device in landscape mode, and the vertical direction Y can be understood as the width extension direction of the display device in landscape mode. Of course, to adapt to the state of the display device, such as a tilted screen, the first direction D1 and the second direction D2 can also be reasonably set according to the tilt degree of the tilted screen. For example, if the tilt angle between the tilt direction of the tilted screen and the horizontal direction X is 45°, then the angle between the first direction D1 and the second direction D2 is 45°. The specific tilt degree is not specifically limited in this disclosure.
[0054] Figure 6 This is a schematic diagram of liquid crystal molecules deflecting to form a first liquid crystal lens in a first three-dimensional mode according to an embodiment of this disclosure. Figure 7 This is a schematic diagram illustrating the formation of a second liquid crystal lens by deflection of liquid crystal molecules in a second three-dimensional mode, as provided in an embodiment of this disclosure. Figure 6 As shown, each first electrode 41 in each first electrode group 41A is subjected to a voltage to drive the liquid crystal molecules in the liquid crystal layer 3 to deflect, forming a plurality of first liquid crystal lenses 31 arranged sequentially along the first direction D1; the first liquid crystal lenses 31 extend along the second direction D2. Figure 7 As shown, each second electrode 42 and third electrode 43 in each second electrode group 42A is subjected to a voltage to drive the liquid crystal molecules in the liquid crystal layer 3 to deflect, forming a plurality of second liquid crystal lenses 32 arranged sequentially along the second direction D2; the second liquid crystal lenses 32 extend along the first direction D1.
[0055] Specifically, the liquid crystal lens assembly 100 also includes a driving unit 6 (see...). Figure 2 As shown); Figure 6 As shown, in the first three-dimensional mode, the driving unit 6 is configured to apply a voltage to each first electrode 41 in each first electrode group 41A, driving the liquid crystal molecules in the liquid crystal layer 3 to deflect, forming a plurality of first liquid crystal lenses 31 arranged sequentially along the first direction D1; the first liquid crystal lenses 31 extend along the second direction D2. Figure 7 As shown, in the second three-dimensional mode, the driving unit 6 is configured to apply voltage to each second electrode 42 and third electrode 43 in each second electrode group 42A, driving the liquid crystal molecules in the liquid crystal layer 3 to deflect and form a plurality of second liquid crystal lenses 32 arranged sequentially along the second direction D2; the second liquid crystal lenses 32 extend along the first direction D1.
[0056] The first three-dimensional mode refers to the naked-eye 3D display mode of the display device in landscape mode. In the first three-dimensional mode, the second electrode 42 is not energized, and the driving unit 6 simultaneously applies voltage to each first electrode 41 and the third electrode 43. The voltage applied to different first electrodes 41 belonging to the same first electrode group 41A is different. The voltage applied to the first electrodes 41 in different first electrode groups 41A may be the same or different, mainly depending on the direction and degree of deflection of the driving liquid crystal molecules. An electric field is formed between the first electrode 41 and the third electrode 43, thereby driving the liquid crystal molecules in the corresponding area of the current first electrode group 41A to deflect. For example, the liquid crystal molecules deflect clockwise and / or counterclockwise by a certain angle along the deflection axis extending along the second direction D2, forming a microlens structure corresponding to the first electrode group 41A, denoted as the first liquid crystal lens 31. The first liquid crystal lens 31 can control the light from the display panel 200 to be projected to the left and right sides in the second direction D2, that is, the left and right directions of the landscape mode, thereby realizing naked-eye 3D display in landscape mode.
[0057] The second 3D mode refers to the glasses-free 3D display mode of the display device in portrait mode. In the second 3D mode, the first electrode 41 is not energized, and the driving unit 6 simultaneously applies voltage to each of the second electrodes 42 and the third electrode 43. The voltage applied to different second electrodes 42 belonging to the same second electrode group 42A is different. The voltage applied to the second electrodes 42 in different second electrode groups 42A may be the same or different, mainly depending on the direction and degree of deflection of the driving liquid crystal molecules. An electric field is formed between the second electrode 42 and the third electrode 43, thereby driving the liquid crystal molecules in the corresponding area of the current second electrode group 42A to deflect. For example, the liquid crystal molecules deflect clockwise and / or counterclockwise by a certain angle along the deflection axis extending along the first direction D1, forming a microlens structure corresponding to the second electrode group 42A, denoted as the second liquid crystal lens 32. The second liquid crystal lens 32 can control the light from the display panel 200 to be projected to the left and right sides in the first direction D1, that is, the left and right directions of the portrait screen, thereby realizing glasses-free 3D display in portrait mode.
[0058] like Figure 3 and Figure 4 As shown, multiple first electrodes 41 are parallel to each other and equally spaced. Multiple second electrodes 42 are parallel to each other and equally spaced. The shortest distance S1 between adjacent first electrodes 41 in the first direction D1 is equal to the shortest distance S2 between adjacent second electrodes 42 in the second direction D2. The shortest distance S1 between adjacent first electrodes 41 is between 1 micrometer and 5 micrometers. The shortest distance S2 between adjacent second electrodes 42 is between 1 micrometer and 5 micrometers. For example, the shortest distance S1 between adjacent first electrodes 41 is 1 micrometer, 2 micrometers, 3 micrometers, 4 micrometers, or 5 micrometers. The shortest distance S2 between adjacent second electrodes 42 is 1 micrometer, 2 micrometers, 3 micrometers, 4 micrometers, or 5 micrometers.
[0059] like Figure 3 As shown, for any first electrode group 41A, the vertical distance L1 from the side of the first first electrode 41 away from the side of the kth first electrode 41 away from the side of the first first electrode 41 is between 100 micrometers and 400 micrometers. For example, k=20. Figure 4 As shown, for any second electrode group 42A, the vertical distance L2 from the side of the first second electrode 42 away from the side of the kth second electrode 42 away from the side of the first second electrode 42 is between 100 micrometers and 400 micrometers. For example, k=20.
[0060] In some embodiments, such as Figure 3 and Figure 4As shown, the second width W2 of the second electrode 42 in the second direction D2 is less than or equal to the first width W1 of the first electrode 41 in the first direction D1. Here, the first width W1 and the second width W2 refer to the maximum width of the electrode.
[0061] Optionally, the first width W1 is between 1.5 micrometers and 4 micrometers; the second width W2 is between 1.5 micrometers and 4 micrometers. For example, the first width W1 is 1.5 micrometers, 1.6 micrometers, 1.7 micrometers, 1.8 micrometers, 1.9 micrometers, 2.0 micrometers, 2.1 micrometers, 2.1 micrometers, 2.3 micrometers, 2.4 micrometers, 2.5 micrometers, 2.6 micrometers, 2.7 micrometers, 2.8 micrometers, 2.9 micrometers, 3.0 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers, or 4.0 micrometers. For example, the second width W2 is 1.5 micrometers, 1.6 micrometers, 1.7 micrometers, 1.8 micrometers, 1.9 micrometers, 2.0 micrometers, 2.1 micrometers, 2.1 micrometers, 2.3 micrometers, 2.4 micrometers, 2.5 micrometers, 2.6 micrometers, 2.7 micrometers, 2.8 micrometers, 2.9 micrometers, 3.0 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers, or 4.0 micrometers.
[0062] Because the first electrode 41 and the second electrode 42 are interleaved, there is a partially overlapping overlap region Q. When a voltage is applied to the first electrode 41, the second electrode 42 (not energized) located in the overlap region Q will shield the first electrode 41 below it, resulting in a weakening of the electric field in the overlap region Q, thereby affecting the deflection accuracy of the liquid crystal molecules. Optionally, as... Figure 5 As shown, the second width W2 of the second electrode 42 in the second direction D2 is smaller than the first width W1 of the first electrode 41 in the first direction D1, thereby reducing the area of the overlap region Q between the first electrode 41 and the second electrode 42, and further reducing the influence of the second electrode 42 located in the overlap region Q on the electric field of the first electrode 41, thus ensuring the deflection accuracy of the liquid crystal molecules.
[0063] Optionally, the first width W1 is between 2.0 micrometers and 4 micrometers. The second width W2 is between 1.5 micrometers and 3.4 micrometers. For example, the first width W1 is 3.4 micrometers and the second width W2 is 2.0 micrometers.
[0064] In some embodiments, Figure 8 This is a planar schematic diagram showing the intersection of the first and second electrodes in Example 2 provided in this embodiment of the present disclosure. Figure 9 This is a planar schematic diagram showing the intersection of the first and second electrodes in Example 3 provided in this embodiment of the present disclosure. Figure 10This is a planar schematic diagram showing the intersection of the first and second electrodes in Example 4 of the embodiments of this disclosure, as shown below. Figures 8-10 As shown, the first electrode 41 has a first side 411 and a second side 412 disposed opposite to each other in the first direction D1, and the second electrode 42 has a third side 421 and a fourth side 422 disposed opposite to each other in the second direction D2; the orthographic projections of the first side 411 and the second side 412 on the first substrate 1 intersect with the orthographic projections of the third side 421 and the fourth side 422 on the first substrate 1 to define an overlapping region Q; the second electrode 42 located in the overlapping region Q has at least one opening V penetrating along its thickness direction (i.e., the third direction Z), and the first electrode 41 in the lower overlapping region Q is exposed by the opening V, thereby reducing the influence of the second electrode 42 located in the overlapping region Q on the electric field of the first electrode 41, thereby ensuring the deflection accuracy of the liquid crystal molecules.
[0065] Here, the number and shape of the openings V are not limited. The number of openings V can be one, two, three, etc.; the shape of the openings V can be a regular shape, such as a circle, ellipse, square, rectangle, triangle, trapezoid, pentagon, hexagon, octagon, etc., or it can be an irregular shape, such as a long wavy shape, etc.
[0066] Optionally, such as Figure 8 As shown, the opening V is a through-hole V1; there is a certain distance between the sidewall of the through-hole V1 and the edge of the second electrode 42. Here, the edge of the through-hole V1 does not extend beyond the edge of the overlapping region Q, that is, the through-hole V1 falls completely within the overlapping region Q. There is a certain distance between the sidewall of the through-hole V1 and the edge of the second electrode 42; there are multiple through-holes V1, and there is a certain distance between adjacent openings V, to ensure the overall electrical conductivity of the second electrode 42 and avoid disconnection. Optionally, the total area of the orthographic projection of multiple through-holes V1 on the first substrate 1 accounts for 50% to 80% of the area of the overlapping region Q. If it is less than 50%, the shielding effect of the second electrode 42 on the first electrode 41 in the overlapping region Q has a greater impact on the electric field of the first electrode 41, which cannot guarantee the deflection accuracy of the liquid crystal molecules, and therefore cannot guarantee the naked-eye 3D effect. If it is more than 80%, there is a risk of disconnection of the second electrode 42 in the overlapping region Q. Therefore, the total area of the orthogonal projection of multiple through holes V1 on the first substrate 1 accounts for 50% to 80% of the area of the overlapping region Q. This can reduce the influence of the second electrode 42 located in the overlapping region Q on the electric field of the first electrode 41, ensuring the naked-eye 3D display effect, and also ensure the overall electrical conductivity of the second electrode 42, avoiding disconnection.
[0067] Optionally, such as Figure 9As shown, the opening V includes a groove V2 with the opening V facing the second direction D2; there are two grooves V2, which are arranged opposite to each other in the second direction D2. That is, the third width (i.e., the minimum width) of the second electrode 42 located in the overlapping area Q is less than the second width W2 (maximum width) of the non-overlapping area Q of the second electrode 42, and less than the first width W1 of the first electrode 41. Here, the shape of the orthographic projection of the groove V2 on the first substrate 1 can be a semi-circular arc, a semi-elliptical arc, or a semi-rectangular shape, which is not limited in this disclosure. Optionally, the total area of the orthographic projection of the two grooves V2 on the first substrate 1 accounts for 50% to 80% of the area of the overlapping area Q.
[0068] Optionally, such as Figure 10 As shown, the opening V includes a groove V2 with its opening facing the second direction D2, and a through hole V1; there are two grooves V2, which are arranged opposite each other in the second direction D2. The number of through holes V1 is not limited; they can be a single elliptical through hole (the major axis of the elliptical through hole is in the first direction D1), located between the two grooves V1; and / or, they can be two circular through holes, arranged opposite each other in the first direction D1. There is a certain distance between the sidewall of the through hole V1 and the bottom wall of the groove V2. Here, with... Figure 9 The difference lies in the addition of a through-hole V1 in the overlapping region Q to increase the electric field strength when the first electrode 41 is energized. Compared to... Figure 8 The difference lies in the addition of grooves V2 in the overlapping region Q to increase the electric field strength when the first electrode 41 is energized. The number and shape of the through holes V1 are not limited, but the total area of all grooves V2 and all through holes V1 projected onto the first substrate 1 accounts for 50% to 80% of the area of the overlapping region Q.
[0069] In some embodiments, Figure 11 This is a planar schematic diagram showing the intersection of the first and second electrodes in Example 5 of the embodiments of this disclosure, as shown below. Figure 11 As shown, the second electrode 42 includes a conductor portion 4201 and a semiconductor portion 4202; the orthographic projection of the conductor portion 4201 on the first substrate 1 does not overlap with the orthographic projection of the first electrode 41 on the first substrate 1, while the orthographic projection of the semiconductor portion 4202 on the first substrate 1 overlaps with the orthographic projection of the first electrode 41 on the first substrate 1.
[0070] When the first electrode 41 is energized and the second electrode 42 is not energized, that is, when the semiconductor part 4202 is not energized, it will exhibit insulating properties, which can be understood as an insulator. Therefore, it will not shield the electric field of the first electrode 41, thereby eliminating the influence of the second electrode 42 on the electric field of the first electrode 41, ensuring the deflection accuracy of liquid crystal molecules, and thus ensuring the naked-eye 3D display effect.
[0071] When the second electrode 42 is energized, that is, when the semiconductor part 4202 is energized, the semiconductor part 4202 exhibits conductive properties and can be understood as a conductor. Therefore, it can electrically connect the conductor parts 4201 at both ends to realize the normal electric field drive of the second electrode 42.
[0072] This embodiment provides a semiconductor section 4202 in the overlap region Q of the second electrode 42 and the first electrode 41. Utilizing the special characteristics of the semiconductor section 4202, the influence of the second electrode 42 on the electric field of the first electrode 41 is completely eliminated when the first electrode 41 is energized, ensuring the deflection accuracy of the liquid crystal molecules and thus ensuring a glasses-free 3D display effect. Simultaneously, the absence of a cut in the overlap region Q ensures the overall electrical conductivity of the second electrode 42, preventing wire breakage.
[0073] Optionally, the semiconductor section 4202 includes a P-type semiconductor 4202A, an intrinsic semiconductor 4202B, and an N-type semiconductor 4202C arranged sequentially along the first direction D1, i.e., a PIN junction structure. The intrinsic semiconductor 4202B has a high resistance when not energized, serving as an insulator and not affecting the electric field of the first electrode 41. When the second electrode 42 is energized, the P-type semiconductor 4202A transmits holes to the intrinsic semiconductor 4202B, and the N-type semiconductor 4202C transmits electrons to the intrinsic semiconductor 4202B. The large number of injected charge carriers significantly increases the conductivity of the intrinsic semiconductor 4202B, resulting in a very low on-state resistance and a small on-state voltage drop when the PIN junction is conducting. Therefore, when used as a connection switch for the conductor section 4201, the conduction loss is extremely low, and the efficiency is high.
[0074] Optionally, the semiconductor part 4202 has a transparent structure, which is beneficial to improving light efficiency and brightness.
[0075] In some embodiments, the first electrode 41 and the second electrode 42 are both strip-shaped transparent electrodes, and the third electrode 43 is a planar transparent electrode, which is beneficial to improving light efficiency and brightness.
[0076] In some embodiments, regarding Examples 2 to 5 above, such as Figures 8-11 As shown, both the first width W1 and the second width W2 are between 2 micrometers and 4 micrometers. The second width W2 can be smaller than, equal to, or smaller than the first width W1. For example, the first width W1 and the second width W2 are equal, both being 2.0 micrometers, 2.1 micrometers, 2.1 micrometers, 2.3 micrometers, 2.4 micrometers, 2.5 micrometers, 2.6 micrometers, 2.7 micrometers, 2.8 micrometers, 2.9 micrometers, 3.0 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers, or 4.0 micrometers.
[0077] Optionally, the first width W1 and the second width W2 are between 3 micrometers and 4 micrometers. For example, both the first width W1 and the second width W2 are 3.4 micrometers.
[0078] To prevent a short circuit between the first electrode 41 and the second electrode 42, a first insulating layer is provided between the first electrode 41 and the second electrode 42.
[0079] In some embodiments, the liquid crystal lens assembly 100 further includes a first insulating layer disposed between the first electrode 41 and the second electrode 42 to prevent short circuits between the first electrode 41 and the second electrode 42. The liquid crystal lens assembly 100 also includes a second insulating layer disposed between the second electrode 42 and the liquid crystal layer 3. Since the plurality of first electrodes 41 and the plurality of second electrodes 42 in this disclosure are all slit electrodes, by providing an insulating layer (such as a first insulating layer and a second insulating layer) between the first electrode 41 and / or the second electrode 42 and the liquid crystal layer 3, the electric field intensity distribution can be made smoother.
[0080] In some embodiments, the materials of the first electrode 41, the second electrode 42, and the third electrode 43 may be indium tin oxide (ITO).
[0081] In some embodiments, such as Figure 2 As shown, the driving unit 6 can be a flexible printed circuit (FPC) or a flexible printed circuit with an integrated control chip (IC) (denoted as FPC2). The flexible printed circuit (FPC2) is bonded to the first substrate 1. If the driving unit 6 is a flexible printed circuit (FPC2), it can receive control signals and driving voltages from the integrated control chip (IC) on the display device to achieve driving control in different three-dimensional modes. If the driving unit 6 is a flexible printed circuit (FPC2) with an integrated control chip (IC), it can independently respond to control signals and provide voltage signals to the first electrode 41 and the third electrode 43, or to the second electrode 42 and the third electrode 43.
[0082] In some embodiments, such as Figure 2 As shown, the liquid crystal lens assembly 100 further includes a first support structure 71 disposed between the first substrate 1 and the second substrate 2. The first support structure 71 supports the first substrate 1 and the second substrate 2 and forms a first cavity. The first electrode 41, the first insulating layer 51, the second electrode 42, the second insulating layer 52, the liquid crystal layer 3, and the third electrode 43 are all located within the first cavity.
[0083] In some embodiments, the materials of the substrates in the first substrate 1 and the second substrate 2 may include, but are not limited to, rigid and transparent materials such as glass, polyimide (PI), polyethylene naphthalene-2,6-dicarboxylate (PEN), polyethylene terephthalate (PET), colorless polyimide (CPI) with flexible properties, thermoplastic polyurethane (TUP), or ultra-thin glass (UTG). In practical applications, appropriate materials can be selected according to actual needs.
[0084] In addition, this disclosure also provides a display device. Figure 12 This is a schematic diagram of a display device provided in an embodiment of the present disclosure, such as... Figure 12 As shown, the device includes a liquid crystal lens assembly 100 comprising any of the above embodiments and combinations thereof, and a display panel 200 disposed on the backlight side of the liquid crystal lens assembly 100. The display panel 200 emits light to the liquid crystal lens assembly 100, and the liquid crystal lens assembly 100 adaptively dims according to the current three-dimensional mode. For example, when the display device is in landscape mode, a first three-dimensional mode is determined, and the driving unit 6 is configured to apply voltage to each first electrode 41 in each first electrode group 41A, driving the liquid crystal molecules in the liquid crystal layer 3 to deflect, forming a plurality of first liquid crystal lenses 31 arranged sequentially along the first direction D1; the first liquid crystal lenses 31 extend along the second direction D2. The light emitted from the display panel 200 is adjusted by the liquid crystal lens assembly 100 to be projected to the left and right sides in the second direction D2, that is, the left and right directions of the landscape mode, thereby realizing naked-eye 3D display in landscape mode. For example, when the display device is in portrait mode and a second 3D mode is determined, the driving unit 6 is configured to apply voltage to each second electrode 42 and third electrode 43 in each second electrode group 42A, driving the liquid crystal molecules in the liquid crystal layer 3 to deflect and form a plurality of second liquid crystal lenses 32 arranged sequentially along the second direction D2; the second liquid crystal lenses 32 extend along the first direction D1. The light emitted from the display panel 200 is adjusted by the liquid crystal lens assembly 100 to be projected to the left and right sides in the first direction D1, that is, the left and right directions of the portrait screen, thereby realizing naked-eye 3D display in portrait mode.
[0085] The display device provided in this embodiment achieves the effect of naked-eye 3D display of the same product in different states (such as landscape and portrait modes) by means of the liquid crystal lens assembly 100. It can be widely used in mobile display products with non-fixed states such as mobile phones and tablets.
[0086] The display panel 200 can be a liquid crystal display panel or an organic electroluminescent display panel.
[0087] Taking display panel 200 as an example, such as Figure 12 As shown, the display device further includes a color filter substrate 300, a first polarizer POL1, a second polarizer POL2, a third polarizer POL3, an adhesive layer 8, and a backlight module 9. The color filter substrate 300 is disposed on the side of the display panel 200 near the liquid crystal lens assembly 100. The first polarizer POL1 is disposed on the side of the display panel 200 away from the color filter substrate 300. The second polarizer POL2 is disposed on the side of the color filter substrate 300 away from the display panel 200. The third polarizer POL3 is disposed on the side of the liquid crystal lens assembly 100 near the display panel 200. The second polarizer POL2 and the third polarizer POL3 are connected by the adhesive layer 8. For example, the material of the adhesive layer 8 can be optical adhesive (OCA). The backlight module 9 is disposed on the side of the first polarizer POL1 away from the display panel 200. The backlight module 9 includes multiple light sources. The light sources can be light-emitting diodes (LEDs).
[0088] The liquid crystal display panel includes a third substrate 201 and a liquid crystal material layer 202 disposed on the side of the third substrate 201 near the liquid crystal lens assembly 100. The liquid crystal material layer 202 includes liquid crystal molecules. For example, the material of the substrate in the third substrate 201 may include, but is not limited to, a rigid transparent material such as glass, or one of PI, PEN, PET, CPI, TUP, or UTG. In practical applications, a suitable material can be selected according to actual needs.
[0089] The color filter substrate 300 is connected to the display panel 200 via a second support structure 72, forming a second cavity. The color filter substrate 300 includes a fourth substrate 30 and a plurality of color filters disposed on the side of the fourth substrate 30 near the display panel 200. The plurality of color filters and the liquid crystal material layer 202 are all located within the second cavity. Multiple color filters include various color filters of different colors, such as a red filter 30R, a green filter 30G, and a blue filter 30B. The red filter 30R receives the light emitted from the light-emitting diode (LED), transmits red light, and absorbs light of other colors besides red (such as green and blue light). The green filter 30G receives the light emitted from the light-emitting diode (LED), transmits green light, and absorbs light of other colors besides green (such as red and blue light). The blue filter 30B receives the light emitted from the light-emitting diode (LED), transmits blue light, and absorbs light of other colors besides blue (such as red and green light), thereby achieving colorization of the light emitted from the light source.
[0090] For example, the material of the substrate in the fourth substrate 30 may include, but is not limited to, a rigid transparent material such as glass, or one of PI, PEN, PET, CPI, TUP, or UTG. In practical applications, a suitable material can be selected according to actual needs.
[0091] The first polarizer POL1, the second polarizer POL2, and the third polarizer POL3 work together to convert the irregular natural light emitted by the display panel 200 into ordered polarized light, thus providing a basis for liquid crystal control. Specifically, the absorption axes of the first polarizer POL1 and the second polarizer POL2 are perpendicular to each other, used for light rotation; the third polarizer POL3 adjusts the angle of the incident light, and its transmission axis is parallel to the alignment direction of the liquid crystal lens assembly 100.
[0092] The display device also includes a control chip IC and a flexible circuit board (FPC1) bonded to a third substrate 201 of the display panel 200 for driving the display panel to display. Optionally, the control chip (IC) may further provide voltage signals to the liquid crystal lens assembly 100.
[0093] Figure 13 A schematic diagram of another display device provided in an embodiment of this disclosure, such as... Figure 13 As shown, the display panel 200 is an organic light-emitting display panel, including multiple organic light-emitting diodes (OLEDs) and pixel driving circuits (not shown) for driving the OLEDs. The self-emissive nature of OLED devices allows for more vibrant colors in the display device, thus providing a more vivid display image for naked-eye 3D displays.
[0094] The display device also includes a fourth polarizer POL4 disposed between the display panel 200 and the liquid crystal lens assembly 100, which is used to reduce ambient light reflection, thereby significantly improving the visibility and contrast of the screen under strong light.
[0095] Alternatively, the display panel 200 can be a Micro Light Emitting Diodes (Micro LED) display panel, in which each Micro LED device can be lit individually, which is beneficial for improving brightness, image quality and efficiency.
[0096] Alternatively, the display panel 200 may be a quantum dot light-emitting diode (QLED) display panel.
[0097] For example, the display device can be any product with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or in-vehicle device. Other essential components of the display device are those that should be understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting this disclosure.
[0098] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.
Claims
1. A liquid crystal lens assembly, characterized in that, include: A first substrate and a second substrate disposed opposite to each other, a liquid crystal layer disposed between the first substrate and the second substrate, a plurality of first electrodes disposed on the side of the first substrate near the liquid crystal layer, a plurality of second electrodes disposed on the side of the plurality of first electrodes near the liquid crystal layer, and a third electrode disposed on the side of the liquid crystal layer near the second substrate. The plurality of first electrodes are divided into a plurality of first electrode groups, each first electrode group including a plurality of first electrodes arranged sequentially along a first direction and extending along a second direction, wherein the first direction and the second direction are intersected; the plurality of second electrodes are divided into a plurality of second electrode groups, each second electrode group including a plurality of second electrodes arranged sequentially along the second direction and extending along the first direction. A voltage is applied to each of the first electrodes and the third electrode in each of the first electrode groups to drive the liquid crystal molecules in the liquid crystal layer to deflect, forming a plurality of first liquid crystal lenses arranged sequentially along the first direction; the first liquid crystal lenses extend along the second direction; A voltage is applied to each of the second electrodes and the third electrode in each of the second electrode groups to drive the liquid crystal molecules in the liquid crystal layer to deflect, forming a plurality of second liquid crystal lenses arranged sequentially along the second direction; the second liquid crystal lenses extend along the first direction; The second electrode includes a conductor portion and a semiconductor portion; the orthographic projection of the conductor portion on the first substrate does not overlap with the orthographic projection of the first electrode on the first substrate, while the orthographic projection of the semiconductor portion on the first substrate overlaps with the orthographic projection of the first electrode on the first substrate.
2. The liquid crystal lens assembly according to claim 1, characterized in that, The second width of the second electrode in the second direction is less than or equal to the first width of the first electrode in the first direction.
3. The liquid crystal lens assembly according to claim 1, characterized in that, The semiconductor section includes a P-type semiconductor, an intrinsic semiconductor, and an N-type semiconductor arranged sequentially along the first direction.
4. The liquid crystal lens assembly according to claim 1, characterized in that, The semiconductor part has a transparent structure.
5. The liquid crystal lens assembly according to claim 1, characterized in that, The first electrode and the second electrode are both strip-shaped transparent electrodes, and the third electrode is a planar transparent electrode.
6. The liquid crystal lens assembly according to claim 2, characterized in that, The first width is between 1.5 micrometers and 4 micrometers; the second width is between 1.5 micrometers and 4 micrometers.
7. The liquid crystal lens assembly according to claim 6, characterized in that, The first width is between 2 micrometers and 4 micrometers; the second width is between 2 micrometers and 4 micrometers.
8. The liquid crystal lens assembly according to claim 1, characterized in that, The liquid crystal lens assembly further includes a first insulating layer disposed between the first electrode and the second electrode, and a second insulating layer disposed between the second electrode and the liquid crystal layer.
9. The liquid crystal lens assembly according to claim 8, characterized in that, The liquid crystal lens assembly further includes a first support structure disposed between the first substrate and the second substrate; the first support structure is used to support the first substrate and the second substrate and form a first cavity; The first electrode, the first insulating layer, the second electrode, the second insulating layer, the liquid crystal layer, and the third electrode are all located within the first cavity.
10. A display device, characterized in that, It includes a liquid crystal lens assembly as described in any one of claims 1 to 9, and a display panel disposed on the backlight side of the liquid crystal lens assembly.
11. The display device according to claim 10, characterized in that, The display panel is a liquid crystal display panel; the display device further includes a color filter substrate, a first polarizer, a second polarizer, a third polarizer, an adhesive layer, and a backlight module; The color filter substrate is disposed on the side of the display panel near the liquid crystal lens assembly; The first polarizer is disposed on the side of the display panel opposite to the color filter substrate; The second polarizer is disposed on the side of the color filter substrate opposite to the display panel; The third polarizer is disposed on the side of the liquid crystal lens assembly near the display panel, and the second polarizer and the third polarizer are connected by the adhesive layer. The backlight module is located on the side of the first polarizer that is away from the display panel.
12. The display device according to claim 11, characterized in that, The liquid crystal display panel includes a third substrate and a liquid crystal material layer disposed on the third substrate near the liquid crystal lens assembly; The liquid crystal display panel and the color filter substrate are connected by a second support structure, forming a second cavity; The color filter substrate includes a fourth substrate and a plurality of color filters disposed on the side of the fourth substrate near the liquid crystal display panel, wherein the plurality of color filters and the liquid crystal material layer are all located within the second cavity.
13. The display device according to claim 10, characterized in that, The display panel is an organic electroluminescent display panel; the display device further includes a fourth polarizer disposed between the display panel and the liquid crystal lens assembly.