Uniform light composite film for light-emitting device and light-emitting assembly

Abstract

The utility model belongs to the technical field of light-emitting devices. The utility model discloses a dodging composite film for a light-emitting device. The dodging composite film comprises a fluorescent layer and a light enhancement layer, the light enhancement layer is arranged on one side of the fluorescent layer, the light enhancement layer comprises at least two prismatic lens groups, each prismatic lens group comprises an upper prismatic lens and a lower prismatic lens, one side, far away from the fluorescent layer, of each upper prismatic lens is provided with an upper prismatic column parallel to the fluorescent layer, and one side, far away from the fluorescent layer, of each lower prismatic lens is provided with a lower prismatic column parallel to the fluorescent layer; in the same prismatic lens group, the included angle between the extension direction of the upper prism column and the extension direction of the lower prism column is larger than 0 degree and smaller than or equal to 90 degrees. The utility model further provides a light-emitting assembly. The dodging composite film disclosed by the utility model is relatively low in thickness, simple in structure and relatively good in dodging effect.

Description

Technical Field

[0001] This application belongs to the technical field of light-emitting devices, and particularly relates to a light homogenizing composite film and a light-emitting component for a light-emitting device. Background Art

[0002] With the development of technology, the size of light-emitting devices is getting smaller and the arrangement is more compact. For a light-emitting component, when the light emitted by a large number of light-emitting devices is directly projected onto a display screen, the bright-dark distribution of the image will be uneven. Therefore, an optical composite film is usually required to be provided on the light-emitting device to improve the display effect of the light-emitting component. The optical composite film can change the angle and area of the light emitted by the light-emitting device, so that the light is more uniform, ensuring that the light-emitting component has sufficient brightness, uniformity and viewing angle.

[0003] However, in the process of implementing the technical solution of this application in the embodiments of this application, the applicant found that the above technology has at least the following technical problems:

[0004] The overall thickness of the optical composite film for a backlight type light-emitting component is relatively large, and the visual effect is poor. The preparation and use process of the light homogenizing film in the optical composite film is complex and the cost is high. Summary of the Utility Model

[0005] This application provides a light homogenizing composite film for a light-emitting device, which solves the problems of the large thickness and complex process of the light homogenizing composite film in the prior art, and improves the light homogenizing effect and visual effect of the light homogenizing composite film.

[0006] To achieve the above object, the technical solution adopted in this application is as follows:

[0007] One aspect of the embodiments of this application provides a light homogenizing composite film for a light-emitting device, characterized in that the light homogenizing composite film includes a fluorescent layer and a light enhancement layer; the light enhancement layer is provided on one side of the fluorescent layer, and the light enhancement layer includes at least two prism sheet groups, and each prism sheet group includes an upper prism sheet and a lower prism sheet. On the side of the upper prism sheet away from the fluorescent layer, there is an upper prism column arranged parallel to the fluorescent layer, and on the side of the lower prism sheet away from the fluorescent layer, there is a lower prism column arranged parallel to the fluorescent layer; in the same prism sheet group, the included angle between the extending direction of the upper prism column and the extending direction of the lower prism column is greater than 0° and less than or equal to 90°.

[0008] Further, in adjacent prism sheet groups, the included angle between the extending direction of the upper prism column in one prism sheet group and the extending direction of the upper prism column in the other prism sheet group is 40° - 50°.

[0009] Further, the edge angle of the upper prism column is 30° - 150°, and the edge angle of the lower prism column is 30° - 150°.

[0010] Further, in the light enhancement layer, the number of prism sheet groups is 2 - 4.

[0011] Further, the thickness of the light homogenizing composite film is 0.3 - 1.5 mm.

[0012] Further, the thickness of the fluorescent layer is 0.1 - 0.15 mm, and the thickness of the prism sheet group is 0.13 - 0.19 mm.

[0013] Further, the light enhancement layer further includes a diffusion layer, the diffusion layer is disposed on at least one side of the prism sheet group, and the thickness of the diffusion layer film is 0.1 - 0.15 mm.

[0014] Further, a light homogenizing layer is further disposed between the light enhancement layer and the fluorescent layer, and the thickness of the light homogenizing layer is 0.2 - 0.3 mm.

[0015] Further, a light shielding layer is further disposed on the side of the light enhancement layer away from the fluorescent layer, and the thickness of the light shielding layer is 0.03 - 0.09 mm.

[0016] Another aspect of the embodiment of the present application further provides a light emitting component, which includes a light emitting module and a light homogenizing module. The light emitting module includes a substrate and a light emitting device disposed on one side of the substrate; the light homogenizing module is disposed on the side of the light emitting module where the light emitting device is disposed, and the light homogenizing module is formed by the aforementioned light homogenizing composite film.

[0017] By adopting multiple layers of prism sheets in the present application, the light homogenizing composite film forms a light scattering effect similar to a quadrangular pyramid or even an octagonal pyramid, improving the visual effect of the light homogenizing composite film. Through the compounding of multiple layers of prism sheets, the thickness of the light homogenizing composite film is relatively low, meeting the requirement of the light emitting component for being thin and light. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the light homogenizing composite film in an embodiment of the present application;

[0019] Figure 2 It is a schematic structure diagram of the light enhancement layer in an embodiment of the present application;

[0020] Figure 3 It is an exploded structure diagram of the prism sheet group in an embodiment of the present application;

[0021] Figure 4 It is a schematic cross-sectional structure diagram of the light enhancement layer in another embodiment of the present application;

[0022] Figure 5 It is a schematic cross-sectional structure diagram of the light homogenizing composite film in another embodiment of the present application;

[0023] Figure 6 It is a schematic cross-sectional structure diagram of the light homogenizing composite film in another embodiment of the present application;

[0024] Figure 7Schematic cross-sectional structure diagram of a light-emitting component in an embodiment of the present application.

[0025] In the figure: light homogenizing composite film 100, fluorescent layer 11, light-enhancing layer 12, prism sheet group 121, upper prism sheet 1211, lower prism sheet 1212, diffusion layer 122, light homogenizing layer 13, light-shielding layer 14; light-emitting component 200, light-emitting module 21, substrate 211, light-emitting device 212, light homogenizing module 22. Specific embodiments

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the specific embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0027] An embodiment of the present application provides a light homogenizing composite film 100 as Figure 1 shown. The light homogenizing composite film 100 includes a fluorescent layer 11 and a light-enhancing layer 12. The light-enhancing layer 12 is provided on one side of the fluorescent layer 11. As Figure 2 shown, the light-enhancing layer 12 includes at least two prism sheet groups 121. The prism sheet group 121 includes an upper prism sheet 1211 and a lower prism sheet 1212. An upper prism column parallel to the fluorescent layer 11 is provided on the side of the upper prism sheet 1211 away from the fluorescent layer 11, and a lower prism column parallel to the fluorescent layer 11 is provided on the side of the lower prism sheet 1212 away from the fluorescent layer 11. In the same prism sheet group 121, the included angle between the extending direction of the upper prism column and the extending direction of the lower prism column is greater than 0° and less than or equal to 90°. The fluorescent layer 11 has good light transmittance and moderate viscosity, and plays a role in protection and bonding. It can make the light homogenizing composite film 100 more firmly combined with the light-emitting device 212, and improve the reliability of the light homogenizing composite film 100. The compounding of multiple prism sheets can form a light homogenizing effect similar to a quadrangular pyramid or an octagonal pyramid, making the light diffusion more uniform and improving the light scattering effect of the light homogenizing composite film 100. Compared with directly etching out the structure of a quadrangular pyramid or an octagonal pyramid, the compounding of multiple prism sheets is simpler and more convenient, and the installation is more convenient, which can reduce the use process of the light homogenizing composite film 100.

[0028] As an optional embodiment, as Figure 2 and Figure 3 shown, in adjacent prism sheet groups 121, the included angle between the extending direction of the upper prism column in one prism sheet group 121 and the extending direction of the upper prism column in another prism sheet group 121 is 40° - 50°. By setting the angle between the prism columns, the light-enhancing layer 12 can be combined into a structure similar to a quadrangular pyramid or an octagonal pyramid, making the light diffusion more uniform. The arrangement method of each prism sheet is not unique. During use, the angle of the included angle can be adjusted according to the actual situation.

[0029] As an alternative embodiment, the angular angle of the upper prism column is 30° - 150°, and the angular angle of the lower prism column is 30° - 150°. By setting appropriate angular angles, the upper prism lens 1211 and the lower prism lens 1212 can form a astigmatic effect similar to that of a multi-pyramid after combination, improving the diffusion effect of the prism lens group 121.

[0030] As an alternative embodiment, in the light enhancement layer 12, the number of the prism lens groups 121 is 2 - 4. By setting multiple prism lens groups 121, the light is diffused more evenly, improving the light homogenization effect of the light enhancement layer 12. However, as the number of the prism lens groups 121 increases, the overall light homogenization composite film 100 will also become thicker. During use, the number of the prism lens groups 121 can be set according to actual requirements.

[0031] As an alternative embodiment, the thickness of the light homogenization composite film 100 is 0.3 - 1.5 mm, meeting the requirement of the thin and light of the light emitting component 200. The thickness of the prism lens group 121 is 0.13 - 0.19 mm, enabling the prism lens group 121 to have a good astigmatic effect and making the overall light homogenization composite film 100 thinner.

[0032] As an alternative embodiment, the thickness of the fluorescent layer 11 is 0.1 - 0.15 mm, making the fluorescent layer 11 thinner and having good bonding performance and protection ability.

[0033] As an alternative embodiment, as Figure 4 shown, the light enhancement layer 12 further includes a diffusion layer 122, and the diffusion layer 122 is disposed on at least one side of the prism lens group 121. The diffusion layer 122 contains scattering particles, atomizing the light source through the refraction, reflection and scattering of the scattering particles, and concentrating the light from small-angle light output to the front, improving the front luminance of the optical composite film and making the light more uniform.

[0034] As an alternative embodiment, the thickness of the diffusion layer 122 is 0.1 - 0.15 mm. The diffusion layer 122 should have a certain thickness to enable the light to be refracted, reflected and scattered multiple times within the diffusion layer 122, thereby improving the astigmatic and light homogenization effects of the diffusion layer 122. However, the increase in the thickness of the diffusion layer 122 will also make the overall light homogenization composite film 100 thicker. Therefore, the diffusion layer 122 should not be too thick either.

[0035] As an alternative embodiment, as Figure 5 shown, a light homogenization layer 13 is further disposed between the light enhancement layer 12 and the fluorescent layer 11. The light homogenization layer 13 can adopt a conventional light homogenization film. The light homogenization film has a better light homogenization effect, and combined with the light enhancement layer 12, it can improve the light homogenization effect of the light homogenization composite film 100. The thickness of the light homogenization layer 13 is 0.2 - 0.3 mm, making the overall light homogenization composite film 100 thinner and having a good light homogenization effect.

[0036] As an alternative embodiment, as Figure 6 shown, a light-shielding layer 14 is provided on the side of the light-enhancing layer 12 close to the upper prism lens 1211. The thickness of the light-shielding layer 14 is 0.03 - 0.09 mm. The light-shielding layer 14 can make the light softer and improve the visual effect of the light-homogenizing composite film 100.

[0037] The embodiment of the present application further provides a light-emitting component 200, which includes a light-emitting module 21 and a light-homogenizing module 22. The light-emitting module 21 includes a substrate 211 and a light-emitting device 212 provided on one side of the substrate 211. The light-homogenizing module 22 is provided on the side of the light-emitting module 21 where the light-emitting device 212 is provided, and the light-homogenizing module 22 is formed by any one of the above light-homogenizing composite films 100. The fluorescent layer 11 of the light-homogenizing composite film 100 is attached to the light-emitting device 212.

[0038] The present application will be further described below in conjunction with embodiments, but the protection scope of the present application is not limited to the embodiments only.

[0039] Embodiment 1

[0040] As Figure 1 shown, a light-homogenizing composite film 100 includes a fluorescent layer 11 and a light-enhancing layer 12. The light-enhancing layer 12 is provided on one side of the fluorescent layer 11. Among them, the light-enhancing layer 12 includes two prism lens groups 121. The prism lens group 121 includes an upper prism lens 1211 and a lower prism lens 1212. An upper prism column parallel to the fluorescent layer 11 is provided on the side of the upper prism lens 1211 away from the fluorescent layer 11, and a lower prism column parallel to the fluorescent layer 11 is provided on the side of the lower prism lens 1212 away from the fluorescent layer 11.

[0041] In the same prism lens group 121, the included angle between the extending directions of the upper prism column and the lower prism column is 90°. In the light-enhancing layer 12, the included angle between the extending directions of adjacent upper prism columns is 45°.

[0042] Specifically, the thickness of the fluorescent layer 11 is 0.12 mm, and the thickness of the prism lens group 121 is 0.16 mm.

[0043] Embodiment 2

[0044] Except for the following technical features, others are the same as those in Embodiment 1.

[0045] A diffusion layer 122 is further provided between the two prism lens groups 121, and the thickness of the diffusion layer 122 is 0.13 mm.

[0046] Embodiment 3

[0047] Except for the following technical features, others are the same as those in Embodiment 1.

[0048] A diffusion layer 122 is further provided between the two prism sheet groups 121, and a diffusion layer 122 is provided between the prism sheet group 121 and the fluorescent layer 11. The thickness of the diffusion layer 122 is 0.13 mm.

[0049] Example 4

[0050] Except for the following technical features, others are the same as those in Example 2.

[0051] A light homogenizing layer 13 is further provided between the light enhancement layer 12 and the fluorescent layer 11. The thickness of the light homogenizing layer 13 is 0.26 mm.

[0052] Example 5

[0053] Except for the following technical features, others are the same as those in Example 4.

[0054] A light shielding layer 14 is further provided on the side of the light enhancement layer 12 away from the fluorescent layer 11. The thickness of the light shielding layer 14 is 0.06 mm.

[0055] Example 6

[0056] Except for the following technical features, others are the same as those in Example 4.

[0057] The light enhancement layer 12 includes 4 prism sheet groups 121.

[0058] Comparative Example 1

[0059] Except for the following technical features, others are the same as those in Example 1.

[0060] In the light enhancement layer 12, the extending directions of adjacent upper prism columns are parallel to each other.

[0061] Comparative Example 2

[0062] As Figure 1 shown, a light homogenizing composite film 100 includes a fluorescent layer 11, a light enhancement layer 12, and a light homogenizing layer 13. The light enhancement layer 12 is provided on one side of the fluorescent layer 11, and the light homogenizing layer 13 is provided between the light enhancement layer 12 and the fluorescent layer 11. Among them, the light enhancement layer 12 includes a prism sheet group 121, and the prism sheet group 121 includes an upper prism sheet 1211 and a lower prism sheet 1212. On the side of the upper prism sheet 1211 away from the fluorescent layer 11, upper prism columns parallel to the fluorescent layer 11 are provided, and on the side of the lower prism sheet 1212 away from the fluorescent layer 11, lower prism columns parallel to the fluorescent layer 11 are provided.

[0063] In the same prism sheet group 121, the included angle between the extending direction of the upper prism column and the extending direction of the lower prism column is 90°.

[0064] Specifically, the thickness of the fluorescent layer 11 is 0.12 mm, the thickness of the prism sheet group 121 is 0.16 mm, and the thickness of the light homogenizing layer 13 is 0.26 mm.

[0065] Comparative Example 3

[0066] As Figure 1 shown, a light homogenizing composite film 100 includes a fluorescent layer 11, a light enhancement layer 12, and a light homogenizing layer 13. The light enhancement layer 12 is disposed on one side of the fluorescent layer 11. Among them, the light enhancement layer 12 includes a prism lens group 121, and the prism lens group 121 includes a diffusion layer 122, an upper prism lens 1211, and a lower prism lens 1212. An upper prism column parallel to the fluorescent layer 11 is provided on the side of the upper prism lens 1211 away from the fluorescent layer 11, and a lower prism column parallel to the fluorescent layer 11 is provided on the side of the lower prism lens 1212 away from the fluorescent layer 11. A diffusion layer 122 is provided on the side of the upper prism lens 1211 away from the fluorescent layer 11, and a diffusion layer 122 is provided on the side of the lower prism lens 1212 close to the fluorescent layer 11. Three light homogenizing layers 13 are provided between the light enhancement layer 12 and the fluorescent layer 11.

[0067] In the same prism lens group 121, the included angle between the extending direction of the upper prism column and the extending direction of the lower prism column is 90°.

[0068] Specifically, the thickness of the fluorescent layer 11 is 0.12 mm, the thickness of the prism lens group 121 is 0.16 mm, the thickness of the diffusion layer 122 is 0.13 mm, and the thickness of the light homogenizing layer 13 is 0.26 mm.

[0069] I. Performance test:

[0070] Perform performance tests on the light homogenizing composite film 100 in the above embodiments and comparative examples.

[0071] Light homogenizing effect: Select 17 points arbitrarily on the surface (10 cm * 10 cm) of the light-emitting component containing the above light homogenizing composite film, measure the brightness, and calculate the ratio of the minimum brightness to the maximum brightness, which is recorded as the luminance uniformity result of the light-emitting component.

[0072] II. Performance test results:

[0073] The performance test results of the encapsulation tape in the above embodiments and comparative examples are shown in Table 1.

[0074] Table 1: Test results

[0075] Thickness of the light homogenizing composite film Light homogenizing effect (luminance uniformity) Example 1 440um 83％ Example 2 570um 85％ Example 3 700um 88％ Example 4 830um 91％ Example 5 890um 92％ Example 6 1150um 95％ Comparative Example 1 440um 67％ Comparative Example 2 540um 71％ Comparative Example 3 1320um 74％

[0076] As can be seen from Table 1 above, the luminance consistency of the light-emitting component using the light homogenizing composite film in the present application is relatively high, the luminance consistency is higher than 80%, and the light homogenizing composite film in the present application has a high light homogenizing effect.

[0077] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of this application.

Claims

1. A light homogenizing composite film for a light-emitting device, characterized in that, Comprising: A fluorescent layer; A light enhancement layer, the light enhancement layer being provided on one side of the fluorescent layer, the light enhancement layer including at least two prism sheet groups, the prism sheet group including an upper prism sheet and a lower prism sheet, an upper prism column parallel to the fluorescent layer being provided on a side of the upper prism sheet away from the fluorescent layer, and a lower prism column parallel to the fluorescent layer being provided on a side of the lower prism sheet away from the fluorescent layer; in the same prism sheet group, the included angle between the extending direction of the upper prism column and the extending direction of the lower prism column is greater than 0° and less than or equal to 90°.

2. The light homogenizing composite film according to claim 1, wherein: In adjacent prism sheet groups, the included angle between the extending direction of the upper prism column in one prism sheet group and the extending direction of the upper prism column in another prism sheet group is 40° - 50°.

3. The light homogenizing composite film according to claim 1, wherein: The angular angle of the upper prism column is 30° - 150°, and the angular angle of the lower prism column is 30° - 150°.

4. The light homogenizing composite film according to claim 1, wherein: In the light enhancement layer, the number of the prism sheet groups is 2 - 4.

5. The light homogenizing composite film according to claim 1, wherein: The thickness of the light homogenizing composite film is 0.3 - 1.5 mm.

6. The light homogenizing composite film according to claim 1, wherein: The thickness of the fluorescent layer is 0.1 - 0.15 mm, and the thickness of the prism sheet group is 0.13 - 0.19 mm.

7. The light homogenizing composite film according to claim 1, wherein: The light enhancement layer further includes a diffusion layer, the diffusion layer being provided on at least one side of the prism sheet group, and the thickness of the diffusion layer film is 0.1 - 0.15 mm.

8. The light homogenizing composite film according to claim 1, wherein: A light homogenizing layer is further provided between the light enhancement layer and the fluorescent layer, and the thickness of the light homogenizing layer is 0.2 - 0.3 mm.

9. The light homogenizing composite film according to claim 1, wherein: A light shielding layer is further provided on a side of the light enhancement layer away from the fluorescent layer, and the thickness of the light shielding layer is 0.03 - 0.09 mm.

10. A light-emitting component, characterized in that, Comprising: A light emitting module, the light emitting module including a substrate and a light emitting device provided on one side of the substrate; A light homogenizing module, the light homogenizing module being provided on a side of the light emitting module where the light emitting device is provided, and the light homogenizing module is formed by the light homogenizing composite film according to any one of claims 1 - 9.

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