Lens box and display equipment
By forming microstructures and grooves on the lens of the lens box, the problem of alignment liquid gathering in low-lying places is solved, the uniformity of alignment liquid coating is improved, and the viewing effect of 3D display is improved.
Patent Information
- Application Number
- CN202421397833.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-18
AI Technical Summary
In traditional 3D display technology, when the polyimide alignment liquid is applied on the lens, it is prone to accumulate in the bottom of the groove or in the low-lying areas between the lenses, resulting in uneven film thickness of the alignment film layer, affecting the viewing effect of the 3D display.
A lens box is designed that forms a microstructure on the lens so that grooves are formed between the microstructures, blocking the flow of the alignment liquid, reducing its risk of aggregation in low-lying areas, thereby improving the uniformity of the alignment liquid coating.
By forming microstructures and grooves on the lens, the aggregation of alignment liquid in the low-lying area is effectively reduced, the uniformity of alignment liquid coating is improved, and the viewing effect of 3D display is improved.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application relates to the field of display technology, and in particular to a lens box and a display device. Background Art
[0002] The traditional way to make 3D displays is to add a layer of slit grating on the 2D display screen to control the light to achieve 3D display. However, the display device of this 3D display film can usually only watch 3D pictures or videos, and cannot switch to watch regular 2D, and it greatly loses optical brightness, which greatly limits the practical application of this technology. Therefore, the application of cylindrical lenses has received more and more attention. The biggest advantage is that the brightness will not be lost. Among them, the 2D / 3D switchable technology is more convenient for the application of 3D display, which is achieved by using the optical rotation characteristics of liquid crystal.
[0003] During the research and practice of cylindrical lenses, the inventors of the present application discovered that coating polyimide alignment liquid on the lens becomes a major technical difficulty. Since the polyimide alignment liquid is fluid, the polyimide alignment liquid coated on the lens will gather at the bottom of the lens groove or the low-lying area between the lenses, resulting in uneven film thickness of the alignment film layer, scattering the original light path, and seriously affecting the viewing effect of 3D display. Utility Model Content
[0004] The embodiments of the present application provide a lens box and a display device, which can reduce the risk of uneven thickness of the alignment layer in the lens box.
[0005] The present application provides a lens box, which includes:
[0006] A first substrate, comprising a first substrate, a first electrode layer, a lens layer and a first alignment layer, wherein the first electrode layer is arranged on the substrate, the lens layer is arranged on a side of the first electrode layer away from the first substrate, and the first alignment layer covers a surface of the lens layer on a side away from the first substrate;
[0007] a second substrate, comprising a second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and a second alignment layer arranged on a side of the second electrode layer away from the second substrate, and
[0008] a liquid crystal layer, disposed between the first substrate and the second substrate;
[0009] The lens layer includes a plurality of lenses, a side of the lens close to the liquid crystal layer has a microstructure, a groove is formed between two adjacent microstructures, and the first alignment layer covers the microstructure and the groove.
[0010] Optionally, in some embodiments of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate, the shape of the microstructure includes one of a step shape, a sawtooth shape, and a boss shape.
[0011] Optionally, in some embodiments of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate, the bottom surface of the groove is an arc surface, and a plurality of the bottom surfaces are concentrically arranged.
[0012] Optionally, in some embodiments of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate, the width of the microstructure decreases in a direction from the lens layer toward the center of the circle.
[0013] Optionally, in some embodiments of the present application, in a plan view of the lens layer, a plurality of the lenses are arranged along a first direction, a plurality of the lenses are extended along a second direction, and the first direction intersects with the second direction;
[0014] A plurality of the microstructures are arranged along the first direction, and a plurality of the microstructures are extended along the second direction.
[0015] Optionally, in some embodiments of the present application, the microstructures are arranged at equal distances.
[0016] Optionally, in some embodiments of the present application, the depth of the groove is between 1 micron and 5 microns.
[0017] Optionally, in some embodiments of the present application, the maximum width of the microstructure is between 60 microns and 250 microns.
[0018] Optionally, in some embodiments of the present application, the lens is a concave lens, a surface of the lens close to the liquid crystal layer is a concave surface, and the microstructure is formed on the concave surface.
[0019] Optionally, in some embodiments of the present application, the lens is a convex lens, a side of the lens close to the liquid crystal layer is a convex surface, and the microstructure is formed on the convex surface.
[0020] Correspondingly, an embodiment of the present application further provides a display device, which includes a display panel and a lens box as described in any one of the above embodiments, wherein the lens box is arranged on the light emitting side of the display panel.
[0021] Optionally, in some embodiments of the present application, the lens is a concave lens, and the first substrate is located on a side of the liquid crystal layer away from the display panel; or
[0022] The lens is a convex lens, and the first substrate is located on a side of the liquid crystal layer close to the display panel.
[0023] The lens box and display device of the embodiments of the present application form microstructures on the lens, so that grooves are formed between the microstructures. In this way, when the material of the first alignment layer (alignment liquid) is sprayed, part of the alignment liquid is retained in the grooves due to the obstruction of the microstructure, thereby reducing the risk of the alignment liquid gathering in the low-lying areas of the lens layer, thereby improving the uniformity of the alignment liquid coating, that is, improving the uniformity of the thickness of the first alignment layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a structural schematic diagram of a lens box provided in an embodiment of the present application;
[0025] Figure 2 is a structural schematic diagram of a lens of a lens box provided in an embodiment of the present application;
[0026] Figure 3 is a schematic top plan view of a lens of a lens box provided in an embodiment of the present application;
[0027] Figure 4 is another structural schematic diagram of a lens of a lens box provided in an embodiment of the present application;
[0028] Figure 5 is another structural schematic diagram of a lens of a lens box provided in an embodiment of the present application;
[0029] Figure 6 is another structural schematic diagram of the lens box provided in an embodiment of the present application;
[0030] Figure 7 is a structural schematic diagram of a display device provided in an embodiment of the present application;
[0031] Figure 8 It is another structural schematic diagram of the display device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device; the terms "first", "second", "third", etc. are used only as markings, and no numerical requirements are imposed or order is established.
[0033] The embodiments of the present application provide a lens box and a display device, which are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.
[0034] Please refer to Figures 1 to 3 The embodiment of the present application provides a lens box 100, which includes a first substrate 11, a second substrate 12 and a liquid crystal layer 13. The liquid crystal layer 13 is disposed between the first substrate 11 and the second substrate 12.
[0035] The first substrate 11 includes a first substrate 111, a first electrode layer 112, a lens layer 113 and a first alignment layer 114. The first electrode layer 112 is disposed on the first substrate 111. The lens layer 113 is disposed on a side of the first electrode layer 112 away from the first substrate 111. The first alignment layer 114 covers a surface of the lens layer 113 away from the first substrate 111.
[0036] The second substrate 12 includes a second substrate 121 , a second electrode layer 122 disposed on a side of the second substrate 121 close to the first substrate 11 , and a second alignment layer 123 disposed on a side of the second electrode layer 122 away from the second substrate 121 .
[0037] The lens layer 113 includes a plurality of lenses 10a. The lens 10a has a microstructure 101a on one side close to the liquid crystal layer 13. A groove 101b is formed between two adjacent microstructures 101a. The first alignment layer 114 covers the microstructure 101a and the groove 101b.
[0038] The lens box 100 of the embodiment of the present application forms a microstructure 101a on the lens 10a, so that grooves 101b are formed between the microstructures 101a. In this way, when the material (alignment liquid) of the first alignment layer 114 is sprayed, part of the alignment liquid is retained in the groove 101b due to the obstruction of the microstructure 101a, thereby reducing the risk of the alignment liquid gathering in the low-lying areas of the lens layer, that is, slowing down the flow and diffusion of the alignment liquid, thereby improving the uniformity of the alignment liquid coating, that is, improving the uniformity of the thickness of the first alignment layer 114.
[0039] It should be explained that in the lens box 100 of the embodiment of the present application, the embodiment of the present application is described by taking the lens layer 113 as a concave lens layer, that is, the lens 10a is a concave lens, the side of the lens 10a close to the liquid crystal layer 13 is a concave surface, and the microstructure 101a is formed on the concave surface. However, it is not limited to this, for example, the lens layer 113 is a convex lens layer.
[0040] In the lens box 100 of one embodiment, when the first electrode layer 112 and the second electrode layer 122 are not connected to voltage, the liquid crystals of the liquid crystal layer 13 are arranged horizontally, and the liquid crystals have a convergence effect on the corresponding light, which can be used for 3D display of the display device; when the first electrode layer 112 and the second electrode layer 122 are connected to different voltages, the liquid crystals of the liquid crystal layer 13 are deflected to be arranged vertically, which can be used for 2D display of the display device. In other words, the adjustment mode of the lens box 100 for light can be controlled by controlling whether the voltage is applied to the first electrode layer 112 and the second electrode layer 122.
[0041] Optionally, the materials of the first substrate 111 and the second substrate 121 are respectively a hard substrate or a flexible substrate. The materials of the first substrate 111 and the second substrate 121 are respectively one of glass, sapphire, silicon, silicon dioxide, polyethylene, polypropylene, polystyrene, polylactic acid, polyethylene diphthalate, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyether sulfone, aromatic fluorotoluene containing polyarylate, polycyclic olefin, polyimide or polyurethane.
[0042] Optionally, the materials of the first electrode layer 112 and the second electrode layer 122 are both transparent materials, such as oxides such as indium tin oxide and indium zinc oxide.
[0043] The material of the first alignment layer 114 and the second alignment layer 123 may be polyimide, etc. Optionally, the thickness of the first alignment layer 114 and the second alignment layer 123 is respectively between 80 μm and 150 μm, such as 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm, 120 μm, 125 μm, 130 μm, 135 μm, 140 μm, 145 μm or 150 μm.
[0044] In one embodiment of the present application, the material of the lens layer 113 can be a UV curable adhesive or other imprintable material, that is, the lens 10a of the lens layer 113 is formed by imprinting, and of course in some embodiments, it can also be formed by photolithography.
[0045] In one embodiment of the present application, in a plan view of the lens layer 113, a plurality of lenses 10a are arranged along a first direction m, and a plurality of lenses 10a are extended along a second direction n. The first direction m intersects with the second direction n.
[0046] The plurality of microstructures 101a are arranged along the first direction m, and the plurality of microstructures 101a are extended along the second direction n.
[0047] Optionally, in an embodiment of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate 11 , the shape of the microstructure 101 a includes one of a step shape, a sawtooth shape, and a boss shape.
[0048] It should be noted that in Figure 1 In the example, in the cross-sectional view perpendicular to the plate surface of the first substrate 11, the shape of the microstructure 101a is sawtooth. The embodiment of the present application is described by taking the shape of the microstructure 101a as an example, but is not limited thereto. For example, the shape of the microstructure 101a is step-shaped, such as Figure 4 As shown; for example, the shape of the microstructure 101a is a boss shape, such as Figure 5 As shown; for example, the shape of the microstructure 101a of the partial lens 10a is one of a step shape, a sawtooth shape and a boss shape, and the shape of the microstructure 101a of the partial lens 10a is another of a step shape, a sawtooth shape and a boss shape.
[0049] Optionally, in an embodiment of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate 11 , the groove bottom surface yh of the groove 101 b is an arc surface, and a plurality of groove bottom surfaces yh are arranged with the same center Q.
[0050] That is to say, the lens surface of the lens 10a is an arc surface, and the lens 10a being an arc surface makes the transmission of light have better symmetry.
[0051] Optionally, in an embodiment of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate 11 , the width k of the microstructure 101 a decreases in a direction from the lens layer 113 to the center Q of the circle.
[0052] The microstructure 101a extends toward the center Q, which can ensure the optical effect of the lens 10a and smoothly block the alignment liquid to improve the thickness uniformity of the first alignment layer 114.
[0053] In one embodiment of the present application, the microstructures 101a are arranged at equal distances, for example, they can be divided into 15 / 30 / 45 equal parts according to equal arc proportions, or divided into equal parts according to equal fillets (3°, 6°, 9°). It can be understood that the equidistantly arranged microstructures 101a can improve the uniformity of the flow of the alignment liquid on the lens 10a, thereby improving the thickness uniformity of the first alignment layer 114.
[0054] Optionally, in some embodiments of the present application, the depth d of the groove 101b is between 1 micron and 5 microns.
[0055] It is understandable that the greater the depth of the groove 101b, the more alignment liquid can be retained, but it will affect the optical effect of the lens, such as affecting the focusing effect of the concave lens. The smaller the depth of the groove 101b, the smaller the alignment liquid retained, and the effect of significantly improving the thickness uniformity of the first alignment layer 114 cannot be achieved. Therefore, based on the requirements of the thickness uniformity of the first alignment layer 114 and the optical effect of the lens, the depth of the groove 101b can be selected to be 1 micron, 1.5 microns, 2 microns, 2.5 microns, 3 microns, 3.5 microns, 4 microns, 4.5 microns or 5 microns, etc.
[0056] In one embodiment of the present application, the maximum width k of the microstructure 101 a is between 60 micrometers and 250 micrometers.
[0057] It is understandable that the maximum width k of the microstructure 101a is the width of one end of the microstructure 101a connected to the lens 10a. The larger the maximum width k of the microstructure 101a, the easier it is to demold; the smaller the maximum width k of the microstructure 101a, the more microstructures 101a can be set. Therefore, based on the requirements of demolding and the density of the microstructure 101a, the maximum width k of the microstructure 101a can be selected to be 60 microns, 70 microns, 80 microns, 90 microns, 100 microns, 110 microns, 120 microns, 130 microns, 140 microns, 150 microns, 160 microns, 170 microns, 180 microns, 190 microns, 200 microns, 210 microns, 220 microns, 230 microns, 240 microns or 250 microns.
[0058] Figure 6 Another embodiment of the lens box 100 is shown. Figure 6 In the embodiment, the parts different from those of the above-mentioned embodiment will be described to avoid redundancy. Figure 6 ,exist Figure 6 In the description, the shape of the microstructure 101a is a sawtooth shape as an example, but the invention is not limited thereto.
[0059] In one embodiment of the present application, the lens 10 a is a convex lens, a surface of the lens 10 a close to the liquid crystal layer 13 is a convex surface, and the microstructure 101 a is formed on the convex surface.
[0060] In one embodiment of the present application, in a cross-sectional view perpendicular to the plate surface of the first substrate 11 , the width k of the microstructure 101 a increases gradually in a direction from the lens layer 113 to the center Q of the circle.
[0061] Please refer to Figure 7 Accordingly, an embodiment of the present application further provides a display device 1000 , which includes a display panel 200 and a lens box 100 as described in any one of the above embodiments, and the lens box 100 is arranged on the light emitting side of the display panel 200 .
[0062] exist Figure 7 In the illustrated implementation, the lens box 100 is described as a concave lens box, based on which the lens 10a is a concave lens, and the first substrate 11 is located on the side of the liquid crystal layer 13 away from the display panel 200. However, it is not limited thereto, for example, Figure 8 The lens box 100 shown in the example is a convex lens box, based on which the lens 10 a is a convex lens, and the first substrate 11 is located on a side of the liquid crystal layer 13 close to the display panel 200 .
[0063] by Figure 7 Taking the corresponding embodiment as an example, in the display device 1000 of one embodiment, when the first electrode layer 112 and the second electrode layer 122 are not connected to voltage, the liquid crystals of the liquid crystal layer 13 are arranged horizontally, and the liquid crystals have a convergence effect on the corresponding light, and the display device 1000 is in a 3D display mode; when the first electrode layer 112 and the second electrode layer 122 are connected to different voltages, the liquid crystals of the liquid crystal layer 13 are deflected to be arranged vertically, and the display device 1000 is in a 2D display mode. In other words, the adjustment mode of the lens box 100 to light can be controlled by controlling whether the voltage is applied to the first electrode layer 112 and the second electrode layer 122, thereby realizing the switching between 3D display and 2D display.
[0064] It should be noted that the structure of the lens box 100 of the display device 1000 is similar to or the same as the structure of the lens box 100 described in any of the above embodiments, so it will not be described in detail here.
[0065] Optionally, the display panel 200 may be a liquid crystal panel or an electroluminescent panel.
[0066] Optionally, the display device 1000 can be applied to and used in various products, including, for example, televisions, notebook computers, monitors, billboards, Internet of Things (IoT) devices, and portable electronic devices including mobile phones, smart phones, tablet personal computers, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation and ultra mobile personal computers (UMPCs), and can also be wearable display devices such as smart watches, watch phones, glasses-type displays and head-mounted displays (HMD); or they can be vehicle-mounted displays, etc.
[0067] The display device of the embodiment of the present application forms a microstructure on the lens, so that grooves are formed between the microstructures. In this way, when the material of the first alignment layer (alignment liquid) is sprayed, part of the alignment liquid is retained in the groove due to the obstruction of the microstructure, thereby reducing the risk of the alignment liquid gathering in the low-lying areas of the lens layer, thereby improving the uniformity of the alignment liquid coating, that is, improving the uniformity of the thickness of the first alignment layer.
[0068] The lens box and display device provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A lens box, characterized in that: include: A first substrate, comprising a first substrate, a first electrode layer, a lens layer and a first alignment layer, wherein the first electrode layer is arranged on the substrate, the lens layer is arranged on a side of the first electrode layer away from the first substrate, and the first alignment layer covers a surface of the lens layer on a side away from the first substrate; a second substrate, comprising a second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and a second alignment layer arranged on a side of the second electrode layer away from the second substrate, and a liquid crystal layer, disposed between the first substrate and the second substrate; The lens layer includes a plurality of lenses, a side of the lens close to the liquid crystal layer has a microstructure, a groove is formed between two adjacent microstructures, and the first alignment layer covers the microstructure and the groove.
2. The lens box according to claim 1, characterized in that: In a cross-sectional view perpendicular to a plate surface of the first substrate, the shape of the microstructure includes one of a step shape, a sawtooth shape and a boss shape.
3. The lens box according to claim 1, characterized in that: In a cross-sectional view perpendicular to the plate surface of the first substrate, the groove bottom surface of the groove is an arc surface, and a plurality of the groove bottom surfaces are arranged concentrically.
4. The lens box according to claim 3, characterized in that: The lens is a concave lens, a side of the lens close to the liquid crystal layer is a concave surface, and the microstructure is formed on the concave surface; In a cross-sectional view perpendicular to the plate surface of the first substrate, the width of the microstructure decreases in a direction from the lens layer toward the center of the circle.
5. The lens box according to claim 3, characterized in that: The lens is a convex lens, a side of the lens close to the liquid crystal layer is a convex surface, and the microstructure is formed on the convex surface; In a cross-sectional view perpendicular to the plate surface of the first substrate, the width of the microstructure increases gradually in a direction from the lens layer toward the center of the circle.
6. The lens box according to any one of claims 1 to 5, characterized in that: In a plan view of the lens layer, a plurality of the lenses are arranged in a first direction, a plurality of the lenses are extended in a second direction, and the first direction intersects with the second direction; A plurality of the microstructures are arranged along the first direction, and a plurality of the microstructures are extended along the second direction.
7. The lens box according to any one of claims 1 to 5, characterized in that: The microstructures are arranged at equal distances from each other.
8. The lens box according to claim 7, characterized in that: The depth of the groove is between 1 micron and 5 microns.
9. The lens box according to claim 8, characterized in that: The maximum width of the microstructure is between 60 micrometers and 250 micrometers.
10. A display device, characterized in that: It comprises a display panel and a lens box as claimed in any one of claims 1 to 9, wherein the lens box is arranged on the light-emitting side of the display panel; The lens is a concave lens, and the first substrate is located on a side of the liquid crystal layer away from the display panel; or The lens is a convex lens, and the first substrate is located on a side of the liquid crystal layer close to the display panel.