Liquid crystal lens and display device

Abstract

The utility model provides a liquid crystal lens and a display device, belongs to the technical field of display, and aims to eliminate vertical color moire patterns existing in a display panel, the liquid crystal lens comprises a first substrate, a second substrate and a liquid crystal layer located between the first substrate and the second substrate, and the liquid crystal layer comprises a plurality of liquid crystal molecules; the first substrate comprises a first substrate, a plurality of first strip-shaped electrodes arranged on the side, close to the second substrate, of the first substrate, and first alignment films arranged on the sides, close to the second substrate, of the first strip-shaped electrodes. The pre-tilt angle of the liquid crystal molecules is a first pre-tilt angle, the first pre-tilt angle is larger than or equal to 5 degrees and smaller than or equal to 6 degrees, and the included angle between the alignment direction of the first alignment film and the extension direction of the first strip-shaped electrode is smaller than or equal to 20 degrees; or the pre-tilt angle of the liquid crystal molecules is a second pre-tilt angle, and the second pre-tilt angle is larger than or equal to 70 degrees.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a liquid crystal lens and a display device. BACKGROUND

[0002] The liquid crystal lens is widely applied in liquid crystal display technologies such as naked-eye 3D display because of the advantages of electric field adjustability, focal length adjustability, and high integration with display screens. The naked-eye 3D display technology refers to a technology of mapping images with parallax to the left eye and the right eye of a person respectively, so that two kinds of view images are synthesized in the human brain to generate a 3D effect.

[0003] However, when the liquid crystal lens is stacked with the display panel in the naked-eye 3D display technology, the display panel will appear vertical color moire, which seriously affects the visual experience. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a liquid crystal lens and a display device, which are used to solve the problem of vertical color moire of the naked-eye 3D display panel in the prior art.

[0005] In a first aspect, a liquid crystal lens is provided, comprising: a first substrate, a second substrate, and a liquid crystal layer between the first substrate and the second substrate, the liquid crystal layer comprising a plurality of liquid crystal molecules.

[0006] The first substrate comprises: a first substrate, a plurality of first strip electrodes arranged on a side of the first substrate close to the second substrate, and a first alignment film arranged on a side of the plurality of first strip electrodes close to the second substrate.

[0007] The pre-tilt angle of the liquid crystal molecules is a first pre-tilt angle, the first pre-tilt angle is greater than or equal to 5° and less than or equal to 6°, and the angle between the alignment direction of the first alignment film and the extension direction of the first strip electrode is less than or equal to 20°; or

[0008] The pre-tilt angle of the liquid crystal molecules is a second pre-tilt angle, the second pre-tilt angle is greater than or equal to 70°.

[0009] In a possible implementation, in the case where the pre-tilt angle of the liquid crystal molecules is the first pre-tilt angle, the liquid crystal lens further comprises:

[0010] A polaroid is arranged on a side of the first substrate away from the second substrate, and the transmission axis angle of the polaroid is parallel to the alignment direction of the first alignment film.

[0011] In a possible implementation, an angle between the alignment direction of the first alignment film and the extending direction of the first strip electrode is greater than or equal to 10° and less than or equal to 20°.

[0012] In a possible implementation, the second substrate includes a second substrate and a second alignment film disposed on a side of the second substrate close to the first substrate, and an alignment direction of the second alignment film is the same as the alignment direction of the first alignment film.

[0013] In a possible implementation, the second pre-tilt angle is greater than or equal to 80° and less than or equal to 90°.

[0014] In a possible implementation, the liquid crystal lens is applied to a display panel, and the display panel includes a black matrix including a plurality of first light-shielding strips extending in a gate line direction and a plurality of second light-shielding strips extending in a data line direction.

[0015] The liquid crystal lens further includes a plurality of support columns disposed between the first substrate and the second substrate, and the plurality of support columns form a plurality of support column period units, and at least part of the support columns in each support column period unit satisfy that a line direction of the support column and a support column closest to the support column is a first direction, and the first direction is different from an extending direction of the first light-shielding strips and / or the second light-shielding strips.

[0016] In a possible implementation, a spacing between two adjacent support columns in the support column period unit is a non-integer multiple of a spacing between two adjacent first light-shielding strips or second light-shielding strips.

[0017] In a possible implementation, the support column period unit includes a plurality of first support columns arranged in the first direction and a plurality of second support columns arranged in a second direction, and the first direction intersects the second direction.

[0018] In a possible implementation, the plurality of support columns in the support column period unit are randomly distributed.

[0019] In a possible implementation, a plurality of support column period units are randomly distributed.

[0020] In a possible implementation, the plurality of support column period units are arranged in a third direction and a fourth direction, the third direction intersects the fourth direction, and the third direction or the fourth direction is different from the extending direction of the first light-shielding strips and / or the second light-shielding strips.

[0021] In a possible implementation, the support columns include upper support columns and lower support columns, the upper support columns are located on the second substrate, the lower support columns are located on the first substrate, a geometric center of a projection of each pair of the upper support columns and the lower support columns on the first substrate is the same, and one end of the upper support column and one end of the lower support column are in mutual abutment.

[0022] The second aspect of the embodiment of the present application further provides a display device, comprising a display panel and the liquid crystal lens of the first aspect of the embodiment of the present application, wherein the liquid crystal lens is located on the light-out side of the display panel.

[0023] The liquid crystal lens and the display device provided by the embodiment of the present application have the beneficial effects that, by adjusting the alignment direction of the alignment film in the liquid crystal lens (the included angle between the alignment direction of the first alignment film and the extension direction of the first strip-shaped electrode is less than or equal to 20°) or adjusting the pre-tilt angle of the liquid crystal molecules (the pre-tilt angle of the liquid crystal molecules is the second pre-tilt angle, and the second pre-tilt angle is greater than or equal to 70°), the pattern period generated by the (Rubbing weak region of the) liquid crystal lens does not interfere with the black matrix layer in the display panel, so as to eliminate the vertical color moire generated by the interference.

[0024] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will specifically describe the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings needed to be used in the embodiments or related technology description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor. It should be noted that the proportions in the drawings are only for illustration and do not represent the actual proportions.

[0026] Figure 1 is a structure diagram of a liquid crystal deflection in the embodiment of the present application;

[0027] Figure 2 is a structure diagram of a black matrix layer of a display panel in the embodiment of the present application;

[0028] Figure 3 is a structure diagram of a liquid crystal lens in the embodiment of the present application;

[0029] Figure 4This is a schematic diagram of the alignment direction of a first alignment film in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the liquid crystal arrangement under different display modes in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of another liquid crystal lens structure in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the arrangement of support columns within a support column periodic unit according to an embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the random distribution of support columns within a periodic unit of support columns in an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the structure of a display device according to an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the structure of another display device in an embodiment of this application;

[0036] Figure description: First substrate 100, second substrate 200, liquid crystal layer 300, polarizer 400;

[0037] First substrate 101, first strip electrode 102, first alignment film 103;

[0038] Second substrate 201, second alignment film 202, black matrix 203;

[0039] Liquid crystal molecule 301, support pillar 302;

[0040] 1. Liquid crystal lens; 2. Adhesive layer; 3. Display panel;

[0041] First polarizer 31, second polarizer 32, third substrate 33, fourth substrate 34. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or at least two. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0044] Among related technologies, naked-eye 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. Therefore, by performing some processing on the display device, the images with parallax are mapped onto the left and right eyes respectively, thus generating 3D images.

[0045] The solution for reproducing binocular parallax naked-eye 3D technology primarily employs a Normal 2D display panel paired with a liquid crystal lens as a complete display device. This liquid crystal lens can be an electrically controlled birefringence (ECB) electro-liquid crystal grating cell, in which ITOs on the TFT side are placed at equal intervals, generating an electric field between the ITOs on the CF side and the Vcom ITOs to drive the liquid crystal deflection. By controlling the voltage of each ITO on the TFT side, the deflection of the liquid crystal at the corresponding position is controlled. (See reference...) Figure 1 , Figure 1 A schematic diagram of a liquid crystal deflection structure is shown, such as... Figure 1 As shown, in this liquid crystal lens, different voltages of ITO result in different deflection angles of the liquid crystal, thereby realizing a microprism structure that controls the projection of light in two directions, thus enabling the left and right eyes to receive different views respectively.

[0046] However, in glasses-free 3D display technology, stacking liquid crystal lenses with the display panel results in two types of moiré patterns: vertical colored moiré patterns and dynamic moiré patterns, which severely affect the visual experience. Specifically, moiré patterns are formed by the interference of the inherent patterns within the internal structures of the two liquid crystal cells (display panel and liquid crystal lens) when they are overlapped. The main internal structure of the display panel is the black matrix (BM) pattern. Figure 2A schematic diagram of the black matrix layer of a display panel is shown. The main structure of the liquid crystal lens includes: upper and lower transparent electrodes (including ITO with equal spacing on the TFT side), a liquid crystal layer between the electrodes, support pillars (PS), and a black matrix. Therefore, the components in the liquid crystal lens that may interfere with the main structure (black matrix layer) of the display panel are likely to be: ITO, PS, and BM with equal spacing on the TFT side, wherein BM and PS are in the same position.

[0047] Analysis of this application revealed two types of moiré patterns after the display panel (2D panel) and liquid crystal lens (3D panel) were aligned: vertically spaced color lines with a spacing of 1mm (i.e., vertical color moiré patterns) and moiré patterns that changed with the viewing angle (i.e., dynamic moiré patterns). Disassembling the liquid crystal lens into multiple groups—CF substrate BM or BM+PS, and TFT substrate ITO or ITO+PS—reveals no moiré pattern. Furthermore, changing the alignment method from rubbing to optical alignment (OA) eliminates the color moiré patterns, leaving only dynamic moiré patterns, as shown in Table 1.

[0048] Table 1

[0049]

[0050] Analysis based on the phenomena summarized in Table 1 shows that neither the individual BM pattern nor the TFT ITO in the liquid crystal lens interfered with the BM pattern of the black matrix layer of the display panel. Because the liquid crystal lens requires a rubbing alignment process in ECB mode to ensure an initial pretilt angle of 5-6°, and due to the high cell thickness design, the corresponding PS height exceeds 20µm. During rubbing alignment, weak rubbing areas are prone to occur at the PS position. The rubbing weak areas around the PS are the most severe, and there are also rubbing weak areas between PS spacings. This leads to abnormal liquid crystal alignment within the rubbing weak area, differing from the normal area arrangement. A regular phase difference appears within the rubbing weak area, similar to a prism effect, causing the pattern period of the rubbing weak area to interfere with the BM pattern of the display panel, producing vertical colored moiré patterns. Furthermore, due to the high height of the PS design, regardless of whether Rubbing or OA alignment is used, there will be alignment anomalies around the PS, resulting in disordered liquid crystal arrangement in the corresponding area. The light propagation direction at the fixed position of the PS changes, forming a specific pattern, which interferes with the BM pattern of the display panel and produces moiré patterns. Therefore, both OA and Rubbing methods have dynamic moiré pattern phenomena.

[0051] In view of the above problems, this application provides a liquid crystal lens and a display device. By adjusting the alignment direction of the alignment film in the liquid crystal lens (the angle between the alignment direction of the first alignment film and the extension direction of the first strip electrode is less than or equal to 20°), or by adjusting the pretilt angle of the liquid crystal molecules (the pretilt angle of the liquid crystal molecules is a second pretilt angle, and the second pretilt angle is greater than or equal to 70°), the pattern period generated by the liquid crystal lens (the Rubbing Weak Region) is changed so that it does not interfere with the 2D BM pattern in the display panel, thereby eliminating the vertical color moiré pattern generated by interference.

[0052] A first aspect of this application discloses a liquid crystal lens, the liquid crystal lens comprising:

[0053] The liquid crystal lens includes: a first substrate 100, a second substrate 200, and a liquid crystal layer 300 located between the first substrate 100 and the second substrate 200, wherein the liquid crystal layer 300 includes a plurality of liquid crystal molecules 301.

[0054] The first substrate 100 includes: a first substrate 101, a plurality of first strip electrodes 102 disposed on the side of the first substrate 101 near the second substrate 200, and a first alignment film 103 disposed on the side of the plurality of first strip electrodes 102 near the second substrate 200.

[0055] The pretilt angle of the liquid crystal molecule 301 is a first pretilt angle, which is greater than or equal to 5° and less than or equal to 6°, and the angle between the alignment direction of the first alignment film 103 and the extension direction of the first strip electrode is less than or equal to 20°; or

[0056] The pretilt angle of the liquid crystal molecule 301 is a second pretilt angle, which is greater than or equal to 70°.

[0057] Reference Figure 3 , Figure 3 A schematic diagram of a liquid crystal lens structure is shown, such as... Figure 3 As shown, the liquid crystal lens includes a first substrate 100 and a second substrate 200 disposed opposite to each other, the first substrate 100 and the second substrate 200 being parallel to each other, and a liquid crystal layer 300 being disposed between the first substrate 100 and the second substrate 200. The liquid crystal layer includes a plurality of liquid crystal molecules 301. The liquid crystal molecules can be deflected under the action of an electric field, thereby achieving the deflection of light. It should be noted that... Figure 3The illustrations of liquid crystal molecules shown (multiple elliptical illustrations) are merely examples and do not represent a limitation on the deflection angle of the liquid crystal molecules. Specifically, by applying a certain voltage to the electrodes in the first substrate 100 and / or the second substrate 200, the degree of distortion of the arrangement of liquid crystal molecules 301 in the liquid crystal layer 300 is controlled, thereby controlling the light transmitted through the liquid crystal lens.

[0058] Multiple support pillars PS302 are distributed in the liquid crystal layer 300. Each support pillar PS is columnar, with its two ends abutting against the first and second substrates, providing support. In this embodiment, because the cell thickness of the liquid crystal lens used in naked-eye 3D technology is relatively large, the corresponding support pillars 302 in the liquid crystal layer are relatively tall, generally reaching 20µm or more. This causes weak rubbing regions to occur around the PS and between adjacent PSs during rubbing alignment of the alignment film on the substrate. The liquid crystal alignment within the weak rubbing region is abnormal, differing from the normal region, exhibiting a regular phase difference. This causes interference between the pattern period of the weak rubbing region and the BM pattern of the display panel, resulting in vertical colored moiré patterns.

[0059] To eliminate the aforementioned vertical colored moiré patterns (i.e., the fine moiré patterns caused by the regular position term resembling a prism due to the rubbing shadow in the alignment shadow region), this application proposes two solutions. One is to change the alignment direction (the pretilt angle of the liquid crystal molecule 301 is a first pretilt angle, which is greater than or equal to 5° and less than or equal to 6°, and the angle between the alignment direction of the first alignment film 103 and the extension direction of the first strip electrode is less than or equal to 20°). The other is to change the liquid crystal pretilt angle (the pretilt angle of the liquid crystal molecule 301 is a second pretilt angle, which is greater than or equal to 70°). These are described in detail in Sections 1.1 and 1.2 below. In addition, this application also adopts the solution proposed in Section 1.3 to solve the dynamic moiré patterns caused by the PS position.

[0060] 1.1 Changing the alignment direction to solve vertical colored moiré patterns:

[0061] To address the aforementioned vertical colored moiré patterns, this application proposes a solution: changing the alignment direction of the alignment film. In this solution, the pretilt angle of the liquid crystal molecule 301 is a first pretilt angle, which is greater than or equal to 5° and less than or equal to 6°. Furthermore, the angle between the alignment direction of the first alignment film 103 and the extension direction of the first strip electrode is less than or equal to 20°. Therefore, this embodiment, by changing the alignment direction (making the angle less than or equal to 20°), alters the direction of the rubbing weak region, thereby changing the pattern period of the rubbing weak region and preventing interference with the BM pattern in the display panel, thus avoiding the generation of vertical colored moiré patterns.

[0062] Specifically, the pre-tilt angle of a liquid crystal molecule refers to the angle (an acute angle) at which one end of the liquid crystal molecule tilts up relative to the surface of the first or second substrate in the alignment direction. Generally, the initial pre-tilt angle of a liquid crystal molecule is 5-6°, which is the first pre-tilt angle.

[0063] In one possible implementation, the angle between the alignment direction of the first alignment film and the extension direction of the first strip electrode is greater than or equal to 10° and less than or equal to 20°.

[0064] Reference Figure 4 , Figure 4 A schematic diagram of the alignment direction of a first alignment film is shown, as follows. Figure 4 As shown, ITO, the first strip electrode, is located on the first substrate. Figure 3 As shown, the first substrate 100 includes a plurality of first strip electrodes 102 disposed on the side of the first substrate 101 near the second substrate 200, and the plurality of first strip electrodes 102 are arranged at equal intervals. The first substrate 100 also includes a first alignment film 103 disposed on the side of the plurality of first strip electrodes 102 near the second substrate 200.

[0065] The first alignment film, through a rubbing alignment process, has a specific alignment direction, namely, regularly arranged grooves along the alignment direction, allowing liquid crystal molecules to align along this direction. For example... Figure 4 As shown, there is an angle α between the alignment direction and the extension direction of the first strip electrode, and the magnitude of this angle α is 10-20°. Figure 4 As shown, the angle between the extension direction of the first strip electrode and the extension direction of the edge of the first substrate is the first angle. The extension direction of the first strip electrode is related to the 3D effect. In related technologies, 3D display devices generally control the first angle to be around 5°.

[0066] Optionally, the angle between the alignment direction of the first alignment film and the extension direction of the first strip electrode is 15°. Here, the proposed angle of 15° refers to the angle size under the condition of satisfying process fluctuation (within the range of 15°±1°). The alignment direction determines the direction of the weak rubbing region between PS. When the alignment direction changes, the direction of the weak rubbing region changes, and the periodicity of the resulting regular pattern changes, thereby eliminating interference with the 2D BM pattern, that is, the vertical colored moiré pattern disappears.

[0067] In one possible implementation, the second substrate includes: a second substrate, and a second alignment film disposed on the side of the second substrate near the first substrate, wherein the alignment direction of the second alignment film is the same as the alignment direction of the first alignment film.

[0068] In this embodiment, as Figure 3 As shown, a first alignment film 103 is disposed in the first substrate 100 on the side of a plurality of first strip electrodes 102 near the second substrate 200. Correspondingly, a plurality of black matrices (BMs) 203 are disposed in the second substrate 201 on the side of the second substrate 201 near the first substrate 100. The positions of the black matrices 203 are the same as the positions of the support pillars 302. A second alignment film 202 is also disposed in the second substrate 200 on the side of the second substrate 201 near the first substrate 100. The angle between the alignment direction of the second alignment film and the extension direction of the first strip electrodes is greater than or equal to 10° and less than or equal to 20°. Furthermore, the alignment directions of the two alignment films are the same. That is, when both the first alignment film and the second alignment film are subjected to a rubbing alignment process, the same rubbing direction is selected so that the first alignment film and the second alignment film have the same alignment direction.

[0069] In one possible implementation, when the pretilt angle of the liquid crystal molecules is a first pretilt angle, the liquid crystal lens further includes:

[0070] A polarizer is located on the side of the first substrate away from the second substrate, and the transmission axis angle of the polarizer is parallel to the alignment direction of the first alignment film.

[0071] Specifically, because the alignment direction of the rubbing changes, it forms an angle with the absorption axis of the polarizer (i.e., the 2D POL) of the display panel, causing crosstalk. To address this issue, this embodiment proposes adding a polarizer (POL) 400 on the side of the first substrate away from the second substrate (i.e., the 3D panel CF side). Specifically, since the alignment direction changes, the light emission direction of the liquid crystal lens also changes, becoming inconsistent with the light incident direction of the display panel. Therefore, this embodiment proposes adjusting the polarizer 400 so that its transmission axis angle is parallel to the alignment direction, thereby resolving the crosstalk problem.

[0072] 1.2 Changing the liquid crystal pretilt angle to solve vertical color moiré patterns:

[0073] To address the aforementioned vertical colored moiré patterns, this application proposes another solution: changing the pretilt angle of the liquid crystal molecules. Typically, the initial pretilt angle of the liquid crystal is 5-6°. This embodiment proposes changing the display mode of the liquid crystal lens from electrically controlled birefringence (ECB) to vertical alignment (VA) display mode. In VA display mode, the pretilt angle of the liquid crystal molecules 301 is a second pretilt angle, which is greater than or equal to 70°. This embodiment avoids the influence of weak rubbing regions caused by the rubbing process by changing the pretilt angle, ensuring that these weak rubbing regions do not affect the liquid crystal state and thus prevent the generation of vertical colored moiré patterns.

[0074] In one possible implementation, the second pretilt angle is greater than or equal to 80° and less than or equal to 90°.

[0075] Reference Figure 5 , Figure 5 The diagram illustrates the arrangement of liquid crystals under different display modes, such as... Figure 5 As shown, typical liquid crystal lenses using ECB mode require rubbing alignment to give the liquid crystal an initial pretilt angle (typically 5-6°) so that the liquid crystal can deflect smoothly after power is applied. However, due to weak rubbing areas caused by PS (Power Supply), some locations experience abnormal liquid crystal alignment. VA (Variable Availability) display mode, however, differs from ECB, as... Figure 5As shown, the initial pretilt angle of the liquid crystal is a high pretilt angle. This high pretilt angle can be maintained without alignment; alignment simply aligns the liquid crystal molecules in one direction. Therefore, the weak rubbing region generated by the rubbing alignment in the VA display mode does not affect the liquid crystal state, thus preventing the generation of vertical color moiré patterns. Optionally, the second pretilt angle of the liquid crystal molecules is in the range of 88-90°, for example, 88.5° or 88.9°.

[0076] In VA display mode, either of two alignment methods can be used: OA alignment or rubbing alignment. Specifically, if OA alignment (i.e., photoalignment) is used, there is no weak rubbing region, and therefore no vertical color moiré patterns will be generated. If rubbing alignment is used, in display mode, the liquid crystal molecules have a high pretilt angle, and the way the liquid crystal molecules stand is not limited by the lack of alignment caused by the weak rubbing region, thus preventing the liquid crystals from standing upright and naturally also preventing vertical color moiré patterns. In the solution proposed in Section 1.2, since the alignment direction is not changed, the crosstalk problem described in Section 1.1 will not occur, and an additional polarizer 400 is not needed in the corresponding liquid crystal lens. Figure 6 , Figure 6 A schematic diagram of another liquid crystal lens structure is shown, such as Figure 6 As shown, it is not necessary to add an additional polarizer 400 to the liquid crystal lens.

[0077] 1.3 Changing the position of the support column PS to resolve dynamic moiré patterns:

[0078] To address the aforementioned dynamic moiré patterns, the solution proposed in this application is to change the position of the support pillar PS. Specifically, dynamic moiré patterns in the display panel are caused by interference between the black matrix layer in the display panel and the position of the PS in the liquid crystal lens. Therefore, this application proposes to change the position of the PS in the liquid crystal lens to eliminate interference with the black matrix layer in the display panel, thereby eliminating the dynamic moiré patterns.

[0079] In one possible implementation, the liquid crystal lens is applied to a display panel, the display panel including: a black matrix, the black matrix including a plurality of first light-shielding strips extending along the gate line direction, and a plurality of second light-shielding strips extending along the data line direction;

[0080] The liquid crystal lens further includes: a plurality of support pillars disposed between the first substrate and the second substrate, the plurality of support pillars forming a plurality of support pillar periodic units, and at least some of the support pillars in each support pillar periodic unit satisfying that: the line direction connecting the support pillar and the support pillar closest to the support pillar is a first direction, and the first direction is different from the extension direction of the first light-shielding strip and / or the second light-shielding strip.

[0081] The display panel includes grid lines and data lines, which intersect to define pixel areas. The black matrix layer in the display panel is as follows: Figure 2 As shown, it includes: a plurality of first light-shielding strips extending along the grid line direction (for blocking the grid line), and a plurality of second light-shielding strips extending along the data line direction (for blocking the data line).

[0082] Typically, the support pillars in a liquid crystal lens are arranged in a regular array. For example... Figure 3 As shown, the liquid crystal lens further includes multiple support pillars 302 disposed between the first substrate 100 and the second substrate 200, forming multiple support pillar periodic units. Each support pillar periodic unit has the same layout, meaning the size of the periodic units is the same, the number of support pillars within each periodic unit is the same, and their relative positions are the same. Furthermore, each support pillar PS has the same height, meaning that the heights are equal under process variation conditions (height error between any two support pillars is within 5%), and the height of the support pillars is 20 μm or higher.

[0083] In one possible implementation, the support pillar includes an upper support pillar and a lower support pillar, the upper support pillar being located on the second substrate and the lower support pillar being located on the first substrate. The geometric center of the orthographic projection of each pair of upper and lower support pillars on the first substrate is the same, and one end of the upper support pillar abuts against one end of the lower support pillar.

[0084] like Figure 3 As shown, the support pillar is divided into two parts (upper support pillar and lower support pillar), located on the first substrate and the second substrate respectively. The geometric centers of the upper and lower support pillars' orthographic projections on the first substrate are the same, allowing one end of the upper support pillar to abut against one end of the lower support pillar. The upper and lower support pillars can also be of any shape, such as trapezoidal, cylindrical, or other shapes. For example, the support pillar can be an XPS, where the orthographic projections of the upper and lower support pillars on the first substrate intersect in an X-shape.

[0085] In addition to the aforementioned support pillars with a relatively large height (20 μm and above) (which serve as the main support pillars), multiple auxiliary support pillars with a smaller height can also be provided in the liquid crystal layer; a step difference is formed between the main support pillars and the auxiliary support pillars (SPS). The two ends of the main support pillars are in contact with the first and second substrates to provide support; the auxiliary support pillars are located on the first or second substrate and are not in contact with the other substrate. Each support pillar periodic unit includes a certain proportion of main support pillars and auxiliary support pillars.

[0086] In this embodiment, at least some of the support pillars in each support pillar periodic unit satisfy the following condition: the line connecting the support pillar to the nearest support pillar is a first direction, which is different from the extension direction of the first light-shielding strip and / or the second light-shielding strip. This ensures that within each support pillar periodic unit, the orthographic projection of the support pillar onto the first substrate does not completely overlap with the orthographic projection of the black matrix layer of the display panel onto the first substrate. In related technologies, support pillars are often arranged in a matrix (i.e., the line connecting the support pillar to the nearest adjacent support pillar is a gate line direction or a data line direction). This embodiment changes the position of the support pillars, making the structure of the support pillars different from that of the black matrix layer in the display panel, thus eliminating interference with the BM pattern. The line connecting two adjacent support pillars (the line connecting the support pillar to the nearest support pillar) can refer to the line connecting the same edge of the two support pillars, or the line connecting the centers of the two support pillars. The center of the support pillar refers to the center of the cross-sectional shape of the support pillar parallel to the first or second substrate.

[0087] There are several ways to change the position of the PS support column. The following sections 1.3.1, 1.3.2, and 1.3.3 will explain the different ways to change the position.

[0088] 1.3.1 Change the spacing between PS:

[0089] In one possible implementation, the spacing between two adjacent support columns in the support column periodic unit is a non-integer multiple of the spacing between two adjacent first light-shielding strips or second light-shielding strips.

[0090] Specifically, this embodiment improves the PS pitch so that it is a non-integer multiple of the black matrix layer BM pattern of the display panel. That is, the pitch between any two adjacent support pillars is a non-integer multiple of the pitch between any two adjacent first or second light-shielding strips. In this embodiment, the minimum pitch of the black matrix layer BM pattern in the display panel is the product pixel size; for example, the horizontal pitch is 29.92µm and the vertical pitch is 89.76µm. The BM size can be 25µm horizontally and 6µm vertically. The advantage of this solution is that the PS are arranged periodically and regularly, CF and TFT can share a single mask, and the arrangement is easy.

[0091] Here are several examples:

[0092] Example 1: The periodic unit size of the support pillars is 0.6 times the size of the BM periodic unit in the black matrix layer. Each support pillar periodic unit has a length of 86.0748 μm and a width of 53.856 μm, comprising 10 rows and 12 columns, including 5 support pillars and 5 auxiliary support pillars. The cross-sectional area of ​​each support pillar is 22 μm long and 8 μm wide, with a support area of ​​575 μm. 2 . Reference Figure 7 , Figure 7 A schematic diagram of the arrangement of support columns within a periodic unit is shown, as follows: Figure 7 As shown, Figure 7 Each circle represents a support column (or auxiliary support column). Within each support column cycle unit, multiple support columns arranged along the first direction intersect with multiple support columns arranged along the second direction at the same point, forming a V-shape.

[0093] Example 2: The periodic unit size of the support pillars is 0.8 times the size of the BM periodic unit in the black matrix layer. Each support pillar periodic unit has a length of 114.7664 μm and a width of 71.808 μm, comprising 10 rows and 12 columns, including 5 main support pillars and 5 auxiliary support pillars. The cross-sectional area of ​​each support pillar is 22 μm long and 8 μm wide, with a support area of ​​323.6 μm. 2 In each cycle, multiple support columns arranged along the first direction intersect with multiple support columns arranged along the second direction at the same point, forming a V-shape.

[0094] Example 3 shows a support column periodic unit that is 1.2 times the size of the black matrix layer BM periodic unit. Each support column periodic unit is 172.15µm long and 107.71µm wide, comprising 10 rows and 12 columns, including 5 main support columns and 5 auxiliary support columns. Each support column has a cross-sectional area of ​​22µm long and 8µm wide, with a support area of ​​143.8µm. 2In each cycle, multiple support columns arranged along the first direction intersect with multiple support columns arranged along the second direction at the same point, forming a V-shape.

[0095] Example 4 shows a support column periodic unit that is 1.4 times the size of the BM periodic unit in the black matrix layer. Each support column periodic unit has a length of 200.8412 μm and a width of 125.664 μm, comprising 10 rows and 12 columns, including 5 main support columns and 5 auxiliary support columns. Each support column has a cross-sectional area of ​​22 μm in length and 8 μm in width, with a support area of ​​105.6 μm. 2 In each cycle, multiple support columns arranged along the first direction intersect with multiple support columns arranged along the second direction at the same point, forming a V-shape.

[0096] Example 5 shows a support column periodic unit that is 1.6 times the size of the black matrix layer BM periodic unit. Each support column periodic unit has a length of 229.5328 μm and a width of 143.646 μm, comprising 10 rows and 12 columns, including 5 main support columns and 5 auxiliary support columns. Each support column has a cross-sectional area of ​​22 μm in length and 8 μm in width, with a support area of ​​80.9 μm. 2 In each cycle, multiple support columns arranged along the first direction intersect with multiple support columns arranged along the second direction at the same point, forming a V-shape.

[0097] Example 6 shows a support column periodic unit that is 1.8 times the size of the black matrix layer BM periodic unit. Each support column periodic unit has a length of 258.2244 μm and a width of 161.568 μm, comprising 10 rows and 12 columns, including 5 main support columns and 5 auxiliary support columns. Each support column has a cross-sectional area of ​​22 μm in length and 8 μm in width, with a support area of ​​63.9 μm. 2 In each cycle, multiple support columns arranged along the first direction intersect with multiple support columns arranged along the second direction at the same point, forming a V-shape.

[0098] In this embodiment, for each support column periodic unit, the spacing between support columns can be changed by increasing or decreasing the distribution density of the support columns. The distribution density of the support columns (PS) refers to the number of support columns (PS) set within a unit area (within the support column periodic unit) of the liquid crystal grating panel.

[0099] Example 7: When the distribution density of support columns within a periodic unit is set to 1 times the normal value, each periodic unit has the following dimensions: length 2.828 mm, width 2.828 mm, support column diameter 16 μm, and cylindrical support column shape. Each periodic unit includes 4 support columns and 4 auxiliary support columns. The support area of ​​each support column is 100 μm. 2 Within each support column periodic unit, the distances between each support column (including auxiliary support columns) are equal and evenly distributed.

[0100] Example 8: When the distribution density of the support columns within a periodic cell is increased to twice the normal value, the size of each periodic cell is: length 2.828 mm, width 2.828 mm, cross-sectional dimensions of the support column are 22 μm long and 10 μm wide, the support column shape is XPS, and the periodic cell contains 16 support columns. Each support column has a support area of ​​100 μm. 2 Within each support column periodic unit, the distances between the support columns are equal and they are evenly distributed.

[0101] Example 9: When the distribution density of the support columns within a periodic unit is increased by a factor of 6, the size of each periodic unit is: length 2.828 mm, width 2.828 mm, cross-sectional dimensions of the support column are 22 μm long and 8 μm wide, the support column shape is XPS, and the periodic unit includes 24 support columns and 24 auxiliary support columns. The support area of ​​each support column is 192 μm. 2 Within each support column periodic unit, the distances between each support column (including auxiliary support columns) are equal and evenly distributed.

[0102] Example 10: When the distribution density of the support columns within a periodic unit is increased by 8 times, the size of each periodic unit is: length 2.828 mm, width 2.828 mm, cross-sectional dimensions of the support column are 22 μm long and 10 μm wide, the support column shape is XPS, and the periodic unit includes 32 support columns and 32 auxiliary support columns. Each support column has a support area of ​​256 μm. 2 Within each support column periodic unit, the distances between each support column (including auxiliary support columns) are equal and evenly distributed.

[0103] Example 11: When the distribution density of the support columns within a periodic unit is increased tenfold, the size of each periodic unit is: length 2.828 mm, width 2.828 mm, cross-sectional dimensions of the support column are 22 μm long and 10 μm wide, the support column shape is XPS, and the periodic unit includes 40 support columns and 40 auxiliary support columns. Each support column has a support area of ​​320 μm. 2Within each support column periodic unit, the distances between each support column (including auxiliary support columns) are equal and evenly distributed.

[0104] Example 12, when the distribution density of the support columns within a periodic unit is increased by a factor of 12, the size of each periodic unit is: length 2.828 mm, width 2.828 mm, cross-sectional dimensions of the support column are 22 μm long and 10 μm wide, the support column shape is XPS, and the periodic unit includes 48 support columns and 48 auxiliary support columns. The support area of ​​each support column is 384 μm. 2 Within each support column periodic unit, the distances between each support column (including auxiliary support columns) are equal and evenly distributed.

[0105] In this embodiment, the arrangement of the main support columns (support columns with a height of 20 μm or more, each end abutting against the first and second substrates) and the auxiliary support columns is not limited. For example, the main support columns and auxiliary support columns can be arranged in alternating rows, with each row of main support columns followed by an adjacent row of auxiliary support columns. Furthermore, this embodiment does not limit the ratio of the number of main support columns to auxiliary support columns within a support column periodic unit; for example, the ratio can be 1:1.

[0106] 1.3.2 Rotation PS cycle:

[0107] In one possible implementation, the support column periodic unit includes: a plurality of first support columns arranged along the first direction, and a plurality of second support columns arranged along the second direction, wherein the first direction intersects the second direction.

[0108] Specifically, in each support column periodic unit, the support columns (which may include auxiliary support columns) are arranged in a V-shape. That is, multiple support columns arranged along a first direction intersect with multiple support columns arranged along a second direction at the same point, forming a V-shape. By rotating this support column periodic unit, the first direction and / or the second direction are made different from the extension direction of the light-shielding strips in the black matrix layer BM (different from the extension direction of the first light-shielding strip, or different from the extension direction of the second light-shielding strip). In this embodiment, by rotating the PS period, the direction of the connection between multiple support columns is made different from the extension direction of the light-shielding strips in the black matrix layer BM pattern of the display panel, thereby preventing interference between the PS period and BM and avoiding the generation of dynamic moiré patterns.

[0109] Furthermore, in this embodiment, the scheme of 1.3.1 (changing the spacing between PSs) and the scheme of 1.3.2 (rotating the PS cycle) can be combined: while making the spacing between two adjacent support columns in the support column cycle unit a non-integer multiple of the spacing between two adjacent first light-shielding strips or second light-shielding strips, the support column cycle unit is rotated to a certain angle so that the support columns in the support column cycle unit are arranged along a first direction or a second direction, wherein the first direction and / or the second direction are different from the extension direction of the light-shielding strips in the black matrix layer BM.

[0110] Here are several examples:

[0111] Example 13: In the initial state, the support columns in the support column periodic unit are arranged in a V-shape symmetrical about the y-axis. The support column periodic unit is rotated clockwise by 7.85°. Each support column periodic unit has the following dimensions: length 146.18 μm, width 88.08 μm, comprising 10 rows and 12 columns, including 5 main support columns and 5 auxiliary support columns. The support area of ​​each support column is 207 μm. 2 .

[0112] Example 14: In the initial state, the support columns in the support column periodic unit are arranged in a V-shape symmetrical about the y-axis. The support column periodic unit is rotated 90° clockwise. Each support column periodic unit has the following dimensions: length 143.4689.76 μm, width 89.76 μm, comprising 10 rows and 12 columns, including 5 main support columns and 5 auxiliary support columns. The support area of ​​each support column is 207 μm. 2 .

[0113] In one possible implementation, the plurality of support column periodic units are arranged in an array along a third direction and a fourth direction, the third direction intersecting the fourth direction, and the third direction or the fourth direction being different from the extension direction of the first light-shielding strip and / or the second light-shielding strip.

[0114] In this embodiment, the support columns form multiple support column periodic units, which are arranged in a certain direction such that at least some of the support column periodic units satisfy the following condition: the direction of the line connecting a support column periodic unit to the support column periodic unit closest to it is different from the extension direction of the first light-shielding strip and / or the second light-shielding strip. Furthermore, some support column periodic units can be arranged along a third direction, and another portion can be arranged along a fourth direction, with the third and fourth directions intersecting. The multiple support column periodic units arranged along the third direction and the multiple support column periodic units arranged along the fourth direction intersect at the same point, forming a V-shape.

[0115] 1.3.3 To make the PS distribution random:

[0116] In one possible implementation, the multiple support columns in the support column periodic unit are randomly distributed.

[0117] Reference Figure 8 , Figure 8 A schematic diagram of the random distribution of support columns within a periodic support column unit is shown, such as... Figure 8 As shown, the PS are randomly arranged within the periodic unit of the support column. This scheme requires separate masks for CF&TFT. However, due to the random arrangement of PS, the Rubbing weak area formed by the PS position is an arbitrary straight line and will not form parallel lines with equal spacing. Therefore, it will not produce a pattern with a fixed period, and thus it is not easy to produce moiré patterns with the black matrix layer 2D pattern of the display panel.

[0118] Example 15, where each support column periodic unit has the following dimensions: length 1.43458 mm, width 1.7712 mm, and a cross-sectional area of ​​22 μm in length and 8 μm in width. It includes 5 support columns and 5 auxiliary support columns. Each support column has a support area of ​​207 μm. 2 The 10 support columns are randomly distributed within the periodic unit of the support column.

[0119] In one possible implementation, the multiple support column periodic units are randomly distributed.

[0120] Specifically, multiple support column periodic units are randomly distributed, arranged in irregular rows or columns, further disrupting the position distribution of P so that it does not interfere with the black matrix layer of the display panel.

[0121] In summary, the liquid crystal lens proposed in this application effectively improves the moiré pattern of the 3D display module. The moiré pattern of the 3D display module is caused by the interference between the internal structures of the display and dimming liquid crystal cells (i.e., the liquid crystal lens and the display panel). By analyzing the moiré pattern generation mechanism, this application optimizes the structure of the dimming liquid crystal cell (i.e., the liquid crystal lens) without changing the structure of the display liquid crystal cell (i.e., the display panel). It adjusts the PS pattern display mode of the liquid crystal lens (i.e., changes the alignment direction so that the angle between the alignment direction and the first strip electrode is about 15°) or the slit angle (changes the liquid crystal pretilt angle to a high pretilt angle), etc., to improve the moiré pattern problem when bonding the dimming cell and the display cell.

[0122] A second aspect of the embodiments of this application also provides a display device, referring to... Figure 9 , Figure 9 A schematic diagram of the structure of a display device is shown, such as... Figure 9 As shown, the display device includes: a display panel 3 and a liquid crystal lens 1 as described in the first aspect of the embodiments of this application, wherein the liquid crystal lens 1 is located on the light-emitting side of the display panel 3. Specifically, as...Figure 9 As shown, an adhesive layer 2 (Optically Clear Adhesive, OCA) is placed between the liquid crystal lens 1 and the display panel 3. The first substrate and the second substrate of the liquid crystal lens 1 are both located on the light-emitting side of the display panel 3, and the second substrate 200 of the liquid crystal lens 1 is located on the side of the first substrate 100 away from the display panel 3.

[0123] In this embodiment, the specific structure of the display panel 2 is not limited. For example, such as... Figure 8 As shown, in addition to the black matrix layer BM, the display panel 3 may also include: a first polarizer 31, a third substrate 3, a fourth substrate 34, and a second polarizer 32. This display device can be a glasses-free 3D display device.

[0124] Furthermore, when the liquid crystal lens 1 employs the structure described in Section 1.1, which alters the alignment direction to resolve vertical color moiré patterns, the liquid crystal lens 1 further includes a polarizer 400 located on the side of the first substrate 100 facing away from the second substrate 200, and the transmission axis angle of the polarizer 400 is parallel to the alignment direction of the first alignment film 103. (Refer to...) Figure 10 , Figure 10 A schematic diagram of another display device is shown, such as Figure 10 As shown, the liquid crystal lens 1 also includes a polarizer 400, one side of which is the first substrate 100 and the other side is the adhesive layer 2.

[0125] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0126] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0127] The liquid crystal lens and display device provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0128] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0129] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0130] The terms "an embodiment," "embodiment," or "one or more embodiments" as used herein mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Furthermore, please note that the examples of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0131] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0132] In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A liquid crystal lens, characterized in that, The liquid crystal lens includes: a first substrate, a second substrate, and a liquid crystal layer located between the first substrate and the second substrate, the liquid crystal layer including a plurality of liquid crystal molecules; The first substrate includes: a first substrate, a plurality of first strip electrodes disposed on the side of the first substrate near the second substrate, and a first alignment film disposed on the side of the plurality of first strip electrodes near the second substrate; The pretilt angle of the liquid crystal molecules is a first pretilt angle, which is greater than or equal to 5° and less than or equal to 6°, and the angle between the alignment direction of the first alignment film and the extension direction of the first strip electrode is less than or equal to 20°; or The pretilt angle of the liquid crystal molecules is a second pretilt angle, which is greater than or equal to 70°.

2. The liquid crystal lens according to claim 1, characterized in that, When the pretilt angle of the liquid crystal molecules is a first pretilt angle, the liquid crystal lens further includes: A polarizer is located on the side of the first substrate away from the second substrate, and the transmission axis angle of the polarizer is parallel to the alignment direction of the first alignment film.

3. The liquid crystal lens according to claim 1, characterized in that, The angle between the alignment direction of the first alignment film and the extension direction of the first strip electrode is greater than or equal to 10° and less than or equal to 20°.

4. The liquid crystal lens according to claim 1, characterized in that, The second substrate includes: a second substrate, and a second alignment film disposed on the side of the second substrate near the first substrate, wherein the alignment direction of the second alignment film is the same as the alignment direction of the first alignment film.

5. The liquid crystal lens according to claim 1, characterized in that, The second pretilt angle is greater than or equal to 80° and less than or equal to 90°.

6. The liquid crystal lens according to any one of claims 1-5, characterized in that, The liquid crystal lens is applied to a display panel, the display panel including: a black matrix, the black matrix including a plurality of first light-shielding strips extending along the gate line direction, and a plurality of second light-shielding strips extending along the data line direction; The liquid crystal lens further includes: a plurality of support pillars disposed between the first substrate and the second substrate, the plurality of support pillars forming a plurality of support pillar periodic units, and at least some of the support pillars in each support pillar periodic unit satisfying that: the line direction connecting the support pillar and the support pillar closest to the support pillar is a first direction, and the first direction is different from the extension direction of the first light-shielding strip and / or the second light-shielding strip.

7. The liquid crystal lens according to claim 6, characterized in that, The spacing between two adjacent support columns in the support column periodic unit is a non-integer multiple of the spacing between two adjacent first light-shielding strips or second light-shielding strips.

8. The liquid crystal lens according to claim 6, characterized in that, The support column periodic unit includes: a plurality of first support columns arranged along the first direction, and a plurality of second support columns arranged along the second direction, wherein the first direction and the second direction intersect.

9. The liquid crystal lens according to claim 6, characterized in that, The multiple support columns in the support column periodic unit are randomly distributed.

10. The liquid crystal lens according to claim 6, characterized in that, The multiple periodic units of the support columns are randomly distributed.

11. The liquid crystal lens according to claim 6, characterized in that, The plurality of support column periodic units are arranged in an array along a third direction and a fourth direction, the third direction intersecting the fourth direction, and the third direction or the fourth direction being different from the extension direction of the first light-shielding strip and / or the second light-shielding strip.

12. The liquid crystal lens according to claim 7, characterized in that, The support pillar includes an upper support pillar and a lower support pillar. The upper support pillar is located on the second substrate, and the lower support pillar is located on the first substrate. The geometric center of the orthographic projection of each pair of upper and lower support pillars on the first substrate is the same, and one end of the upper support pillar abuts against one end of the lower support pillar.

13. A display device, characterized in that, The display device includes: a display panel and a liquid crystal lens according to any one of claims 1-12, wherein the liquid crystal lens is located on the light-emitting side of the display panel.

Images