Optical structure and display device

Abstract

This application discloses an optical structure and a display device. The optical structure includes a substrate and multiple optical units disposed on the substrate. Each optical unit includes a conductive portion, a first light-transmitting element, and a second light-transmitting element. The conductive portion is disposed on the substrate. The first light-transmitting element is disposed on the side of the conductive portion away from the substrate. The second light-transmitting element is disposed on the substrate and located on the side of the first light-transmitting element, with the refractive index of the second light-transmitting element being greater than that of the first light-transmitting element. When the conductive portion is not energized, the first light-transmitting element is flat. When the conductive portion is energized, the first and second light-transmitting elements are stacked, and both are convex, protruding in the direction away from the substrate. This application overcomes the problem of poor display effect caused by the thick thickness and low light transmittance of existing microstructure lens mechanisms, and has the advantages of thinness and high light transmittance, thus improving the display effect.

Description

Technical Field

[0001] This application belongs to the field of image display technology, and in particular relates to an optical structure and display device. Background Technology

[0002] 3D display technology is broadly divided into stereoscopic display technology and autostereoscopic display technology. Stereoscopic display technology requires viewers to wear special glasses, such as shutter glasses and polarized glasses, while autostereoscopic display technology does not require viewers to wear glasses.

[0003] Traditional 3D display devices may include a backlight unit, a liquid crystal display panel, and a microstructured lens mechanism capable of switching between 2D and 3D modes. The microstructured lens mechanism comprises a microstructured lens sheet, two layers of electrodes, a photoelectric medium, and a panel. One layer of electrodes is disposed on the microstructured lens sheet, and another layer of electrodes is disposed on the lower surface of the panel. The photoelectric medium, which is liquid crystal, is disposed between the two layers of electrodes. If no voltage is applied to the two electrodes, a 3D display effect can be achieved. This 3D display device has two layers of electrodes, two layers of glass structures, and a photoelectric medium layer stacked together, resulting in a relatively thick layer with low light transmittance, which affects the display effect. Summary of the Invention

[0004] This application provides an optical structure and a display device to solve the problem that the existing microstructure lens mechanism has a thick thickness and low light transmittance, resulting in poor display effect.

[0005] In a first aspect, embodiments of this application provide an optical structure, including:

[0006] substrate;

[0007] Multiple optical units are respectively disposed on the substrate, wherein each optical unit includes:

[0008] A conductive portion is disposed on the substrate;

[0009] The first light-transmitting element is disposed on the side of the conductive portion away from the substrate;

[0010] The second light-transmitting element is disposed on the substrate and located on one side of the first light-transmitting element, and the refractive index of the second light-transmitting element is greater than the refractive index of the first light-transmitting element, and the refractive index of the first light-transmitting element is greater than the refractive index of air.

[0011] in,

[0012] When the conductive part is not energized, the first light-transmitting element is flat.

[0013] When the conductive part is energized, the first light-transmitting element and the second light-transmitting element are stacked, and the first light-transmitting element and the second light-transmitting element are protruding and protrude in a direction away from the substrate.

[0014] Optionally, when an electrical signal is applied to the conductive part, the first light-transmitting element extends to the side away from the substrate and protrudes.

[0015] Optionally, the optical unit further includes a enclosure portion forming a receiving space, wherein the conductive portion, the first light-transmitting element, and the second light-transmitting element are disposed in the receiving space, and the second light-transmitting element is disposed between the conductive portion and the first light-transmitting element.

[0016] Optionally, both the first and second light-transmitting elements include silicone rubber, with the proportion of silicone rubber in the second light-transmitting element being Q2 and the proportion of silicone rubber in the first light-transmitting element being Q1, where Q2 > Q1.

[0017] Optionally, the height of the enclosure is H, the thickness of the first light-transmitting element is L1, and the thickness of the second light-transmitting element is L2, wherein H > L2 + L1.

[0018] 1μm≤L2≤10μm;

[0019] 1μm≤L1≤5μm;

[0020] 5μm≤H≤20μm.

[0021] Optionally, when an electrical signal is applied to the conductive part, the volume of the second light-transmitting element increases, and it becomes convex.

[0022] Optionally, the second light-transmitting element is disposed on one side of the substrate, and the second light-transmitting element has an arc-shaped surface, the arc-shaped surface being provided with a plurality of concave and convex microstructures.

[0023] Optionally, the groove depth of the convex-concave microstructure is D, where 1μm≤D≤5μm.

[0024] Optionally, when an electrical signal is applied to the conductive part, the first light-transmitting element extends along the surface of the second light-transmitting element and covers the second light-transmitting element.

[0025] Secondly, embodiments of this application also provide a display device, including a display panel and the optical structure described in any one of the above claims, wherein the optical structure is disposed on the display panel.

[0026] The optical structure and display device provided in this application include a substrate and multiple optical units. The multiple optical units are disposed on one side of the substrate. Each optical unit includes a conductive part, a first light-transmitting element, and a second light-transmitting element. The first light-transmitting element is disposed on the side of the conductive part away from the substrate. The second light-transmitting element is disposed on the substrate, located on the side of the first light-transmitting element, and the refractive index of the second light-transmitting element is greater than that of the first light-transmitting element. The refractive index of the first light-transmitting element is greater than that of air. When the conductive part is not energized, the first light-transmitting element is flat. When the conductive part is energized, the first light-transmitting element and the second light-transmitting element are stacked, and the first and second light-transmitting elements are convex, protruding in the direction away from the substrate, thereby realizing 3D display. The layered structure in the thickness direction is less, the structure is simple, and it overcomes the problem of poor display effect caused by the thick thickness and low light transmittance of the existing microstructure lens mechanism. It has the advantages of thinness and high light transmittance, thus improving the display effect. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0029] Figure 1 This is a schematic diagram of a first form of the optical structure provided in an embodiment of this application.

[0030] Figure 2 A top view of a first form of the optical structure provided in an embodiment of this application.

[0031] Figure 3 A schematic diagram showing a first form of optical structure provided in an embodiment of this application in 3D.

[0032] Figure 4 This is a schematic diagram of a second form of the optical structure provided in an embodiment of this application.

[0033] Figure 5 This is a schematic diagram of a second form of optical structure provided in an embodiment of this application, displayed in 3D.

[0034] Figure 6 A cross-sectional view of a second form of the optical structure provided in an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] This application provides an optical structure to solve the problem of poor display effect caused by the thick thickness and low light transmittance of existing microstructure lens mechanisms. The following description will be provided in conjunction with the accompanying drawings.

[0037] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, Figure 1 This is a schematic diagram of a first form of the optical structure provided in the embodiments of this application. Figure 3 This is a schematic diagram showing a first form of the optical structure provided in an embodiment of this application in 3D. Figure 4 This is a schematic diagram of a second form of the optical structure provided in the embodiments of this application. Figure 5 This is a schematic diagram of a second form of optical structure provided in an embodiment of this application, displayed in 3D.

[0038] This application provides an optical structure including a substrate 100 and a plurality of optical units 200.

[0039] In this embodiment, the substrate 100 can be glass, plastic, or a flexible substrate. The flexible substrate can be composed of a single flexible organic layer or two or more flexible organic layers. The substrate 100 includes a first flexible organic layer, a barrier layer, and a second flexible organic layer stacked sequentially. The materials of the first and second flexible organic layers are selected from polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyarylate (PAR), polycarbonate (PC), polyetherimide (PEI), and polyethersulfone (PES). The barrier layer is selected from inorganic materials such as silicon dioxide and silicon nitride. In this embodiment, the substrate 100 is a glass substrate.

[0040] In this embodiment, each optical unit 200 includes a conductive portion 210, a first light-transmitting element 220, and a second light-transmitting element 230. The conductive portions 210 of the plurality of optical units 200 are spaced apart on one side of the substrate 100. The conductive portions 210 can be connected to a circuit board, and the circuit board can supply or de-energize the conductive portions 210. The conductive portions 210 are made of a transparent conductive material, one side of the conductive portion 210 is attached to the substrate 100, and the other side is a plane. The first light-transmitting element 220 and the second light-transmitting element 230 are made of transparent material. The first light-transmitting element 220 is disposed on the side of the conductive part 210 away from the substrate 100. The second light-transmitting element 230 is disposed on the substrate 100 and located on the side of the first light-transmitting element 220. The refractive index of the second light-transmitting element 230 is greater than that of the first light-transmitting element 220. When the conductive part 210 is not energized, the first light-transmitting element 220 is flat. When the conductive part 210 is energized, the first light-transmitting element 220 and the second light-transmitting element 230 are stacked. The first light-transmitting element 220 and the second light-transmitting element 230 are convex and protrude in the direction away from the substrate 100.

[0041] Understandably, to achieve a 3D display effect, energizing the conductive part 210 causes the first light-transmitting element 220 to form a protrusion under the action of the conductive part 210. The first light-transmitting element 220 and the second light-transmitting element 230 form a stacked protrusion structure. Optical light passes through the first light-transmitting element 220 and the second light-transmitting element 230, which have different refractive indices, dividing an image into a left-eye image and a right-eye image for the viewer, thus allowing the viewer to enjoy the 3D image. In this embodiment, the conductive part 210, the first light-transmitting element 220, and the second light-transmitting element 230 are provided on the substrate 100. The number of layers is small, the thickness is thin, and the impact on light transmittance is small, ensuring the display effect.

[0042] In some embodiments, when an electrical signal is applied to the conductive part 210, the first light-transmitting element 220 extends in a protruding shape to the side away from the substrate 100.

[0043] Understandably, when the conductive part 210 is energized, the first light-transmitting element 220 is affected by the conductive part 210 and extends in the direction away from the substrate 100 to form a protrusion, which cooperates with the second light-transmitting element 230 to achieve a 3D display effect.

[0044] In some embodiments, when an electrical signal is applied to the conductive part 210, the volume of the second light-transmitting element 230 increases and it becomes convex.

[0045] Understandably, when the conductive part 210 is energized, the second light-transmitting element 230 expands due to heat, and the volume of the second light-transmitting element 230 increases to form a convex shape. The second light-transmitting element 230 cooperates with the first light-transmitting element 220 to achieve a 3D display effect.

[0046] In some implementations, see Figure 1 and Figure 2 As shown, the optical unit 200 also includes a enclosure portion 240, which forms a receiving space. The enclosure portion 240 is a structure of four baffles arranged end to end opposite each other. The material of the enclosure portion 240 is organic photoresist. The conductive portion 210, the first light-transmitting element 220, and the second light-transmitting element 230 are disposed in the receiving space, facing away from the substrate 100. The second light-transmitting element 230 is located between the conductive portion 210 and the first light-transmitting element 220. When the conductive portion 210 is energized, the first light-transmitting element 220 and the second light-transmitting element 230 expand due to heat and bulge out to the side away from the substrate 100, which can realize a 3D display effect. When the conductive portion 210 is not energized, the first light-transmitting element 220 and the second light-transmitting element 230 retract. The side of the first light-transmitting element 220 and the second light-transmitting element 230 facing away from the substrate 100 is a flat surface. Moreover, the conductive portion 210 is a flat plate structure, which can realize a 2D display effect.

[0047] It is understandable that in this embodiment, by energizing or de-energizing the conductive part 210, the switching between 2D and 3D display effects of the optical structure can be achieved, thus expanding its applicability.

[0048] Based on the above implementation method, see Figure 1 and Figure 2 As shown, both the second light-transmitting element 230 and the first light-transmitting element 220 include silicone rubber. The proportion of silicone rubber in the total weight of the second light-transmitting element 230 is Q2, and the proportion of silicone rubber in the total weight of the first light-transmitting element 220 is Q1, where Q2 > Q1. Specifically, 50% ≤ Q2 ≤ 90%, and the value of Q2 can be 50%, 60%, 70%, 80%, 90%, or other unlisted values; 30% ≤ Q1 ≤ 50%, and the value of Q1 can be 30%, 40%, 50%, or other unlisted values.

[0049] Understandably, in this embodiment, the second light-transmitting element 230 and the first light-transmitting element 220 include not only silicone rubber but also base polymers, crosslinking agents, catalysts, and other components. The refractive indices of the first light-transmitting element 220 and the second light-transmitting element 230 are adjusted by varying the content of silicone rubber. The second light-transmitting element 230 and the first light-transmitting element 220 are micro-cured by ultraviolet light, giving them the properties of thermal expansion and cooling contraction. When the conductive part 210 is energized, the second light-transmitting element 230 and the first light-transmitting element 220 expand due to heat. When the conductive part 210 is not energized, the second light-transmitting element 230 and the first light-transmitting element 220 return to a flat state. The deformation of the rubber material of the second light-transmitting element 230 and the first light-transmitting element 220 is reversible, exhibiting excellent performance.

[0050] In some implementations, see Figure 1As shown, the height of the enclosure portion 240 is higher than the sum of the first light-transmitting element 220 and the second light-transmitting element 230, to prevent the expansion of the first light-transmitting element 220 and the second light-transmitting element 230 from flowing out from the top of the enclosure portion 240, and to limit the first light-transmitting element 220 and the second light-transmitting element 230 to a fixed position.

[0051] Based on the above implementation method, see Figure 1 As shown, the thickness of the second light-transmitting element 230 is L2, where 1μm≤L2≤10μm. The thickness of the second light-transmitting element 230 can be 1μm, 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm or other unlisted values. The thickness of the second light-transmitting element 230 is reasonably set, and the distance between the second light-transmitting element 230 and the substrate 100 is small, which does not affect the 2D display effect.

[0052] Based on the above implementation method, see Figure 1 As shown, the thickness of the first light-transmitting element 220 is L1, where 1μm≤L1≤5μm. The thickness of the first light-transmitting element 220 can be 1μm, 2μm, 3μm, 4μm, 5μm or other unlisted values. The thickness of the second light-transmitting element 230 is reasonably designed. The thickness of the second light-transmitting element 230 is greater than that of the first light-transmitting element 220. The second light-transmitting element 230 will not affect the expansion of the first light-transmitting element 220, thus ensuring the 3D display effect.

[0053] Based on the above implementation method, see Figure 1 As shown, the height of the enclosure portion 240 is H, where 5μm ≤ H ≤ 20μm. The thickness of the enclosure portion 240 can be 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm, 12μm, 13μm, 14μm, 15μm, 16μm, 17μm, 18μm, 19μm, or other unlisted values. The height of the enclosure portion 240 is reasonably designed, limiting the first light-transmitting element 220 and the second light-transmitting element 230.

[0054] For a summary of some implementation methods, see [link to implementation details]. Figure 4 and Figure 5 As shown, the second light-transmitting element 230 is disposed on the substrate 100. The second light-transmitting element 230 has an arc-shaped surface, and the image avoids the setting of multiple concave and convex microstructures 231.

[0055] When an electrical signal is applied to the conductive part 210, the first light-transmitting element 220 deforms into a convex shape along with the second light-transmitting element 230. The surface of the second light-transmitting element 230 is provided with concave and convex microstructures 231, which increases the friction between the surface of the second light-transmitting element 230 and the first light-transmitting element 220. The adhesion of the first light-transmitting element 220 to the second light-transmitting element 230 is increased, ensuring that the first light-transmitting element 220 can move along the surface of the second light-transmitting element 230, thus ensuring the 3D display effect.

[0056] Based on the above embodiment, when an electrical signal is passed to the conductive part 210, the first light-transmitting element 220 extends along the surface of the second light-transmitting element 230 and covers the second light-transmitting element 230.

[0057] The second light-transmitting element 230 is made of a light-transmitting material, such as photoresist. The second light-transmitting element 230 has a hemispherical structure. The first light-transmitting element 220 includes adhesive and dielectric material. The dielectric material can be dielectric particles with a high dielectric constant. The first light-transmitting element 220 is a fluid. When the conductive part 210 is energized, the dielectric material in the first light-transmitting element 220 extends along the surface of the second light-transmitting element 230 under the action of the electric field. When the conductive part 210 is de-energized, the dielectric material is de-energized, and the adhesiveness is restored. The first light-transmitting element 220 retracts, the first light-transmitting element 220 separates from the second light-transmitting element 230, the first light-transmitting element 220 undergoes a reversible change, the conductive part 210 is a conductive metal material such as copper or aluminum, when the conductive part 210 is energized, the first light-transmitting element 220 flows along the surface of the second light-transmitting element 230 and covers the second light-transmitting element 230, the first light-transmitting element 220 deforms into a convex structure according to the shape of the second light-transmitting element 230, the first light-transmitting element 220 and the second light-transmitting element 230 have a difference in refractive index, thus presenting a 3D display effect.

[0058] When the conductive part 210 is not energized, the first light-transmitting element 220 is located on one side of the second light-transmitting element 230, and the first light-transmitting element 220 and the second light-transmitting element 230 are arranged in the same layer. When the conductive part 210 is energized, the dielectric material in the first light-transmitting element 220 generates a force, and the first light-transmitting element 220 flows along the surface of the second light-transmitting element 230 and covers the second light-transmitting element 230, thereby realizing a 3D display effect. The first light-transmitting element 220 and the second light-transmitting element 230 are arranged in opposite positions, with small thickness, high light transmittance, and good display effect.

[0059] Based on the above implementation method, see Figure 6 As shown, the optical unit also includes a blocking portion 240, which is located outside the second light-transmitting element 230. The blocking portion 240 and the second light-transmitting element 230 form a receiving space, and the first light-transmitting element 220 is filled in the receiving space. The blocking portion 240 is a baffle structure arranged in parallel and spaced apart. One side of the baffle structure is in contact with the second light-transmitting element 230, and the adjacent second light-transmitting element 230 and the blocking portions 240 on both sides form a receiving space.

[0060] Based on the above implementation, the refractive index of the second light-transmitting element 230 is n1, and the refractive index of the first light-transmitting element 220 is n2, where n1 > n2. Specifically, 1.5 ≤ n1 ≤ 1.8, and 1.2 ≤ n2 ≤ 1.5.

[0061] Understandably, the value of n1 can be 1.5, 1.6, 1.7, 1.8 or other unlisted values, and the value of n2 can be 1.2, 1.3, 1.4, 1.5 or other unlisted values. The first light-transmitting element 220 and the second light-transmitting element 230 form a refractive index difference to ensure the 3D display effect.

[0062] Based on the above implementation method, see Figure 4 As shown, the groove depth of the concave-convex microstructure 231 is D, where 1μm≤D≤5μm. The groove depth of the concave-convex microstructure can be 1μm, 2μm, 3μm, 4μm, 5μm, or other unlisted values. The groove depth design of the concave-convex microstructure is reasonable, avoiding excessive depth that would affect the display effect, and also avoiding excessively shallow depth that would affect the adhesion of the first light-transmitting element 220.

[0063] Based on the above implementation method, see Figure 4 As shown, it also includes a cover plate 300, which is disposed opposite to the substrate 100, and an optical unit 200 is disposed between the cover plate 300 and the substrate 100.

[0064] Understandable, see Figure 4 As shown, a support column 310 is provided between the cover plate 300 and the substrate 100. The optical unit 200 is located between the cover plate 300 and the substrate 100. The cover plate 300 has a dustproof function, protects the optical unit 200, and improves the reliability of the optical structure.

[0065] This application also provides a display device, including a display panel and the optical structure described in any of the above embodiments, wherein the optical structure is disposed on the display panel. The display panel can be a liquid crystal display panel, an LED display panel, an OLED display panel, etc., and the optical structure is disposed on the light-emitting surface of the display panel. The display device possesses the technical features and beneficial effects of the optical structure described in any of the above embodiments; please refer to the above embodiments for details, which will not be repeated here.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0067] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0068] The optical structure and display device provided in the embodiments of 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.

Claims

1. An optical structure, characterized in that, include: substrate; Multiple optical units are respectively disposed on the substrate, wherein each optical unit includes: A conductive portion is disposed on the substrate; The first light-transmitting element is disposed on the side of the conductive portion away from the substrate; The second light-transmitting element is disposed on the substrate and located on one side of the first light-transmitting element, and the refractive index of the second light-transmitting element is greater than the refractive index of the first light-transmitting element, and the refractive index of the first light-transmitting element is greater than the refractive index of air. in, When the conductive part is not energized, the first light-transmitting element is flat. When the conductive part is energized, the first light-transmitting element and the second light-transmitting element are stacked, and the first light-transmitting element and the second light-transmitting element are protruding and protrude in a direction away from the substrate.

2. The optical structure according to claim 1, characterized in that, When an electrical signal is applied to the conductive part, the first light-transmitting element extends to the side away from the substrate and protrudes.

3. The optical structure according to claim 2, characterized in that, When an electrical signal is applied to the conductive part, the volume of the second light-transmitting element increases, and it becomes convex.

4. The optical structure according to claim 2, characterized in that, The second light-transmitting element is disposed on one side of the substrate, and the second light-transmitting element has an arc-shaped surface, the arc-shaped surface being provided with a plurality of concave and convex microstructures.

5. The optical structure according to claim 4, characterized in that, The groove depth of the convex-concave microstructure is D, where 1μm≤D≤5μm.

6. The optical structure according to claim 5, characterized in that, When an electrical signal is applied to the conductive part, the first light-transmitting element extends along the surface of the second light-transmitting element and covers the second light-transmitting element.

7. A display device, characterized in that, It includes a display panel and the optical structure described in any one of claims 1 to 6, wherein the optical structure is disposed on the display panel.

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