Light guide assembly and display device

Abstract

The utility model relates to the technical field of display, in particular to a light guide assembly and a display device. The light guide assembly includes a light guide film including a first main surface and a second main surface opposite to each other, and a plurality of light guide microstructures arranged on the first main surface in a predetermined pattern, the plurality of light guide microstructures are configured to guide light rays emitted to the plurality of light guide microstructures in the light guide film to be emitted from the second main surface in the specified pattern; the second main surface is covered with the modification layer, the modification layer comprises a light-transmitting area with the light transmittance being 80%-100% and a light-shading area with the light transmittance being 0-30%, and the position of the light-transmitting area corresponds to the position of the specified pattern on the second main surface.

Description

Light guide components and display devices Technical Field

[0001] This application relates to the field of display technology, and more particularly to a light guide assembly and display device for pattern display. Background Technology

[0002] Patterned displays, with their personalized content and rich and varied effects, are increasingly being used in the gaming industry, automotive displays, architectural decoration, cultural and tourism displays, safety signs, advertising, art and other fields.

[0003] Currently, there are two main approaches to patterned displays. One approach utilizes a pre-arranged fiber optic cable, where each fiber serves as a point or pixel in the pre-displayed pattern, stitching them together to form the entire pattern. Light is then transmitted through the fiber optic cable to illuminate the pattern. This method offers great design freedom, but the fiber optic cable arrangement is technically challenging, requires significant installation space, and incurs substantial costs in terms of manpower and resources. Maintenance is also difficult, so it is generally used in high-end applications, such as VIP cabins on airplanes. The second approach uses a light guide film (or light guide plate). Typically, a full-format approach is used, where the light guide film provides uniform surface illumination, and the pattern structure (usually composed of translucent and opaque portions) attached to the film displays the pre-defined pattern. This method offers greater design freedom, is convenient and simple, and is low-cost. However, because the entire light guide plate needs to be pre-illuminated before a portion of the light energy is extracted and allowed to pass through, while most of the energy is blocked, the energy utilization rate is inevitably very low, especially in applications requiring low power consumption, such as automotive displays and aviation lighting. An upgraded solution is to directly utilize a patterned light guide film, placing light guide microstructures only within a pre-defined pattern area to display a specific pattern. The advantage of this solution is that it allows for transparent displays, such as for game console covers or shop window displays. However, due to defects inside or on the film surface, as well as the roughness of the light guide microstructures, some stray light inevitably appears. This stray light will escape from areas where the pattern should not be displayed, reducing the contrast of the pattern and affecting the display effect. This is especially problematic in display scenarios with specific requirements, such as automotive starry sky ceilings, where high-resolution, dynamically adjustable, or dynamically illuminated starry sky or meteor patterns are needed, while also meeting requirements for lightweight design, low energy consumption, and even flexibility. The aforementioned solution cannot meet these design requirements. Summary of the Invention

[0004] To address at least one of the aforementioned problems, this application proposes a light guide assembly and a display device.

[0005] Firstly, a light guide component is proposed, comprising:

[0006] A light guide film includes a first main surface and a second main surface opposite to each other, and a plurality of light guide microstructures arranged in a predetermined pattern on the first main surface. The plurality of light guide microstructures are configured to guide light rays incident on the plurality of light guide microstructures within the light guide film to exit from the second main surface in the predetermined pattern.

[0007] A decorative layer covering the second main surface includes a light-transmitting area with a light transmittance of 80%-100% and a light-blocking area with a light transmittance of 0-30%, wherein the position of the light-transmitting area corresponds to the position of the specified pattern on the second main surface.

[0008] In some possible implementations, the plurality of light-guiding microstructures are configured to reflect light incident on the plurality of light-guiding microstructures within the light-guiding film as emitted from the second main surface in the prescribed pattern;

[0009] Also includes:

[0010] A reflective layer directly covers the light-guiding microstructure from the first main surface side.

[0011] In some possible implementations, the reflective layer also directly covers the portion of the first main surface other than the light-guiding microstructure.

[0012] In some possible implementations, the light guide film includes a first light-incident surface and a second light-incident surface, wherein the first light-incident surface and the second light-incident surface are two opposing sides of the light guide film.

[0013] The light-guiding microstructure includes:

[0014] The first light-receiving surface is configured to receive light rays from the first light-receiving surface and reflect the light rays from the first light-receiving surface so that they exit from the second main surface in the prescribed pattern;

[0015] The second light-receiving surface is configured to receive light rays from the second light-receiving surface and reflect the light rays from the second light-receiving surface so that they exit from the second main surface in the prescribed pattern.

[0016] In some possible implementations, the modification layer includes:

[0017] A base layer that covers the second main surface;

[0018] A patterned layer, formed on the side of the substrate layer opposite to the second main surface, includes a cutout area defining the light-transmitting area and a non-cutout area defining the light-shielding area, the non-cutout area having a lower light transmittance than the substrate layer.

[0019] In some possible implementations, the base layer is formed as a complete layer that directly covers and thereby protects the second main surface.

[0020] In some possible implementations, the modification layer comprises a fluorescent material.

[0021] In some possible implementations, the light-transmitting area is formed as a perforated structure that penetrates the decorative layer.

[0022] In some possible implementations, the shape and size of the light-transmitting area are formed to correspond to the shape and size of the prescribed pattern on the second main surface.

[0023] In some possible implementations, both the light guide film and the modification layer are flexible structures that can be bent.

[0024] Secondly, a display device is proposed, comprising:

[0025] The light guide component as described in the first aspect;

[0026] A light source emits light rays that are coupled into the light guide film from the side.

[0027] The light guide component provided in this application includes: a light guide film comprising a first main surface and a second main surface opposite to each other, and a plurality of light guide microstructures arranged in a predetermined pattern on the first main surface, the plurality of light guide microstructures being configured to guide light incident on the plurality of light guide microstructures within the light guide film to exit from the second main surface in a predetermined pattern; and a modification layer covering the second main surface, having a light-transmitting area with a light transmittance of 80%-100% and a light-blocking area with a light transmittance of 0-30%, the position of the light-transmitting area corresponding to the position of the predetermined pattern on the second main surface. Therefore, a display device configured with such a light guide component can have high patterned display contrast, and such a light guide component can be easily manufactured. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0029] Figure 1 is a schematic diagram of a display device provided in an embodiment of this application.

[0030] Figure 2 is a top view of the rhetoric layer of the display device provided in the embodiment of this application.

[0031] Figure 3 is a schematic diagram of the display effect of the display device provided in the embodiment of this application.

[0032] Figure 4 is a schematic diagram of the display device provided in an embodiment of this application.

[0033] Figure 5 is a schematic diagram of the display device provided in an embodiment of this application.

[0034] Figure 6 is a schematic diagram of the display device provided in an embodiment of this application.

[0035] Figure 7 is a schematic diagram of the display device provided in an embodiment of this application.

[0036] Figure 8 is a schematic diagram of the display device provided in an embodiment of this application.

[0037] Figure 9 is a schematic diagram of the display device provided in an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100, 300 - Light source; 200 - Light guide assembly;

[0040] 1-Light guide film, 1A, 1B-Main surface, 1C, 1D-Light incident surface;

[0041] 2-Light guiding microstructure, 2A, 2B-Light-facing surfaces;

[0042] 3-Finishing layer, 3A-Transmitting area, 3B-Shading area;

[0043] 4-Basal layer;

[0044] 5 - Pattern layer, 5A - Cutout area, 5B - Non-cutout area;

[0045] 6-Reflective layer. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, 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 some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0047] In the description of this application, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects, and, for example, the term "first element" itself does not imply the existence of a "second element," nor does the term "second element" itself imply the existence of a "first element." Furthermore, words such as "a" or "one" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0048] In the description of this application, the terms "comprising" or "having" indicate the presence of the said features, numbers, operations, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, and / or combinations thereof.

[0049] In the description of this application, if there are terms such as “configured as” or “constructed as”, they are generally interchangeable with “having the ability to”, “designed to”, “used for” or “capable”, depending on the context.

[0050] In the description of this application, references to "one embodiment" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0051] Figure 1 shows a portion of a display device provided according to an embodiment of this application. The display device includes a light source 100 that emits light by being powered and a light guide assembly 200 that receives the light emitted by the light source 100, guides its transmission, and emits it. The light guide assembly 200 includes a light guide film 1 and a decorative layer 3.

[0052] The substrate of the light guide film 1 is a light-transmitting material, and the light guide film 1 includes a main surface 1A and a main surface 1B that are opposite to each other in their thickness direction, and a light incident surface 1C connecting the main surface 1A and the main surface 1B, wherein the light incident surface 1C is located on the side of the light guide film 1 in its extension direction and is one of the four sides of the light guide film 1. Furthermore, the light guide film 1 also includes a plurality of light-guiding microstructures 2 arranged in a predetermined pattern on the main surface 1A. These light-guiding microstructures 2 are configured to guide light rays incident on the plurality of light-guiding microstructures 2 within the light guide film 1 to exit from the main surface 1B in the aforementioned predetermined pattern.

[0053] The light source 100 can be an array light source 100 including multiple LED beads, which are arranged on the light incident surface 1C side of the light guide film 1 and regularly along the length of the light incident surface 1C, thus becoming a side-lit light source 100.

[0054] During operation, light emitted from the light source 100 enters the interior of the light guide film 1 through the light incident surface 1C. The light transmitted within the light guide film 1, after illuminating the light guide microstructures 2, is guided (reflected) by the light guide microstructures 2, changing its propagation direction and thus exiting from the main surface 1B. Since these light guide microstructures 2 are arranged in a predetermined pattern, the light guided by these microstructures 2 appears to exit from the main surface 1B in this predetermined pattern. In some embodiments, as shown in FIG3, the predetermined pattern can be a starry sky pattern containing numerous stars and other elements of varying sizes. When the light guide microstructures 2 are arranged in a starry sky pattern on the main surface 1A of the light guide film 1, these microstructures 2 can guide the light incident on them within the light guide film 1 to exit from the main surface 1B in a starry sky pattern, thereby achieving a simulated starry sky visual effect on the main surface 1B side of the light guide film 1. Additionally, FIG2 schematically shows a decorative layer 3 with a light-transmitting area 3A and a light-shielding area 3B provided in one embodiment.

[0055] The light source 100 can be a monochromatic light source, a multi-color light source with switchable colors, or a dynamic light source with switchable brightness and color. By controlling the brightness and / or color changes of the light source 100, dynamic display effects can be achieved, such as shooting stars, twinkling constellations, marquee lights, raindrops, and other dynamic display effects.

[0056] Referring to Figure 4, in some embodiments, the light-guiding microstructure 2 includes a light-facing surface 2A near the light-incident surface 1C, which is formed to be inclined relative to the main surface 1A. By selecting a suitable inclination angle of the light-facing surface 2A, when light from the light-incident surface 1C illuminates the light-facing surface 2A, most of the light is directly reflected by the light-facing surface 2A to the main surface 1B and exits from the main surface 1B, thereby presenting a predetermined pattern on the main surface 1B side. Furthermore, by further optimizing the inclination angle of the light-facing surface 2A, a considerable portion of the light illuminating the light-facing surface 2A is directed substantially perpendicularly to the main surface 1B, so that the peak angle of the light emanating from the main surface 1B is perpendicular to the main surface 1B. For example, the light-facing surface 2A can be an inclined plane, and the inclination angle of the light-facing surface 2A, i.e., the angle α between the light-facing surface 2A and the main surface 1A, is 35°-55°. Alternatively, the light-facing surface 2A can also be a curved surface.

[0057] It is unlikely that the light-guiding microstructure 2 will reflect all the light rays incident on its light-facing surface 2A. Some light rays will inevitably be refracted at the light-guiding microstructure 2 and pass through from the main surface 1A side, resulting in reduced light utilization. To address this problem, as shown in FIG5, in some embodiments, a reflective layer 6 is provided. This reflective layer 6 directly covers the light-guiding microstructure 2, particularly its light-facing surface 2A, from the main surface 1A side. This allows light rays that would otherwise be refracted and transmitted through the light-guiding microstructure 2 to be reflected back by the reflective layer 6, thereby improving the utilization of the light emitted by the light source 100. In other embodiments, as shown in FIG6, the reflective layer 6 not only directly covers the entire light-guiding microstructure 2 but also directly covers all other parts of the main surface 1A except for the light-guiding microstructure 2. In other words, the reflective layer 6 directly covers the entire main surface 1A, thus virtually no light rays pass through from the main surface 1A side, further improving the utilization of the light emitted by the light source 100.

[0058] The reflective layer 6 can be a coating structure coated on the main surface 1A of the light guide film 1 and tightly bonded to the light guide film 1, or it can be a separable structure processed independently of the light guide film 1. The reflective layer 6 can be formed of metal or metal oxide, such as an aluminum layer, a silver layer, or a titanium dioxide (TiO2) layer. The reflective layer 6 can be a reflective coating formed on the main surface 1A through processes such as coating, filling, and sintering curing, with a thickness between 100-2000 nm, or it can be a reflective coating deposited on the main surface 1A through a vapor deposition process, with a thickness between 20-100 nm.

[0059] Although the light-guiding microstructure 2 is schematically shown as a recessed structure from the main surface 1A in Figures 1 and 4 to 6, it is not limited to this and can also be a protruding structure from the main surface 1A. In addition, the light-guiding microstructure 2 can be various shapes such as triangular prism, spindle, and triangular pyramid.

[0060] In some embodiments, the light-guiding microstructures 2 are arranged in an array, and the array pitch along the direction parallel to the light-incident surface 1C is 50-300um, and the array pitch along the direction perpendicular to the light-incident surface 1C is 40-300um.

[0061] The light guide film 1 can be made of PC, PMMA, PET or MS material, or a mixture of PMMA and PC material, and its thickness can be 0.1-1mm.

[0062] Referring back to Figure 1, the modification layer 3 covers the main surface 1B of the light guide film 1, and the modification layer 3 includes a light-transmitting area 3A with a light transmittance of 80%-100% and a light-shielding area 3B with a light transmittance of 0-30%. The position of the light-transmitting area 3A corresponds to the position of the specified pattern on the main surface 1B. In this way, on the one hand, the pattern light energy corresponding to the aforementioned specified pattern emitted from the light guide film 1 can pass smoothly through the light-transmitting area 3A of the modification layer 3 to present the desired visual effect. On the other hand, stray light and light that is about to be emitted from other positions on the main surface 1B due to internal or surface defects of the light guide film 1 will be blocked by the light-shielding area 3B of the modification layer 3 and cannot be emitted or is emitted in small quantities, thereby helping to improve the contrast of the display device.

[0063] By selecting the light transmittance of the light-transmitting area 3A and the light-shielding area 3B to be 80%-100% and 0-30% respectively, while ensuring that the display device has excellent patterned display contrast, it also helps to easily form such a decorative layer 3, because it is easy to obtain materials and / or structures with the aforementioned light transmittance.

[0064] In the embodiment shown in Figure 1, the decorative layer 3 includes a base layer 4 covering the main surface 1B and a pattern layer 5 formed on the side of the base layer 4 opposite to the main surface 1B. The pattern layer 5 includes a cutout area 5A defining a light-transmitting area 3A and a non-cutout area 5B defining a light-shielding area 3B, with the cutout area 5A penetrating the pattern layer 5. The material forming the base layer 4 can be PC, PMMA, PET, or MS materials with a light transmittance of 80% or higher, readily available from the market, or a mixture of PMMA and PC. The material forming the pattern layer 5 can be a light-shielding material with a light transmittance close to zero. For example, the light-shielding material can be applied to the side of the base layer 4 opposite to the main surface 1B by printing, coating, or printing processes to obtain the pattern layer 5.

[0065] In some embodiments, the light-shielding material can be applied to the entire main surface 1B of the base layer 4 by printing, coating or printing process, and then the base layer 4 to which the light-shielding material has been applied can be punched to obtain a light-transmitting area 3A with a light transmittance of 100% through a cutout. In this case, the pattern layer 5 and the base layer 4 have cutout areas that completely overlap with each other.

[0066] In other embodiments, a light-shielding material can be first applied to the entire main surface 1B of the substrate layer 4 using a printing, coating, or printing process to obtain a complete light-shielding layer. Then, this complete light-shielding layer is etched to remove a portion of the light-shielding layer, thereby forming the cutout area 5A of the pattern layer 5 and a further light-transmitting area 3A. In these embodiments, the substrate layer 4 can be a complete layer directly covering the main surface 1B; therefore, the main surface 1B of the light guide film 1 is not exposed from the cutout area 5A of the pattern layer 5, thus protecting the main surface 1B of the light guide film 1 using the substrate layer 4.

[0067] In some other embodiments, a stencil printing process or screen printing can be used to apply the light-shielding material to the portion of the main surface 1B corresponding to the desired light-shielding area 3B, and the light-shielding material is prevented from being applied to the portion of the main surface 1B corresponding to the desired light-transmitting area 3A by the blocking of the stencil or screen.

[0068] In some other embodiments, a printing process can be used to apply the light-shielding material only to the portion of the main surface 1B corresponding to the desired light-shielding area 3B, while the light-shielding material is not applied to the portion of the main surface 1B corresponding to the desired light-transmitting area 3A.

[0069] In some embodiments, as shown in Figures 5 and 6, the modification layer 3 is a single-layer structure, and the light-transmitting area 3A of the modification layer 3 is a perforated structure that penetrates the modification layer 3. The main surface 1B of the light guide film 1 is exposed from the modification layer 3 through the light-transmitting area 3A of the perforated structure. This single-layer modification layer 3 with the perforated structure can be a skin.

[0070] By selecting appropriate materials and processes to form the light guide film 1, the modification layer 3, and the reflective layer 6, and controlling the overall thickness of the light guide assembly 200 to below 0.5 mm (e.g., 0.3 mm), the light guide film 1, the modification layer 3, and the reflective layer 6 of the light guide assembly 200 can become flexible structures that can be flexibly deformed. This gives the light guide assembly 200 excellent flexibility and deformation capabilities, allowing it to adapt to complex installation surfaces, such as automotive panoramic sunroofs and the inner walls of MRI chambers, thus avoiding the segmented splicing problems of traditional rigid light guide components.

[0071] Furthermore, the shape and size of the light-transmitting area 3A can be formed to match the shape and size of the specified pattern on the main surface 1B, so as to further improve the contrast of the patterned display of the display device.

[0072] In some embodiments, fluorescent materials can be embedded in the light-transmitting area 3A or the entire area of ​​the modification layer 3. The fluorescent materials absorb and re-emit light, achieving richer colors and light and shadow displays. Additionally, the light-shielding area 3B of the modification layer 3 can be designed to be black, sky blue, gray, or a combination of multiple colors to meet the display requirements of different applications. For example, designing the light-shielding area 3B of the modification layer 3 to be black creates a visual effect of a starry night sky; designing the light-shielding area 3B of the modification layer 3 to be sky blue creates a visual effect of blue sky and white clouds.

[0073] Next, please refer to FIG7, which shows a portion of a display device according to another embodiment of this application, having a structure similar to that of the display device of the embodiment shown in FIG1. ​​The description of FIG1 can be used for clarification, and for simplicity, identical or similar components are given the same or similar reference numerals, and repetitive detailed descriptions of their identical parts are omitted. The following focuses on describing the differences between this embodiment and FIG1.

[0074] In the embodiment shown in Figure 1, the display device is designed with single-sided light incident, and its light guide film 1 has only one light incident surface 1C. However, the embodiment shown in Figure 7 is different. In Figure 7, the display device is designed with double-sided light incident, and its light guide film 1 has two light incident surfaces 1C and 1D, namely light incident surface 1C and light incident surface 1D, which are two opposite sides of the light guide film 1. In addition, the light source 100 is disposed on the light incident surface 1C side of the light guide film 1 to emit light onto the light incident surface 1C; the light source 300 is disposed on the light incident surface 1D side of the light guide film 1 to emit light onto the light incident surface 1D.

[0075] Accordingly, as shown in Figure 8, the light-guiding microstructure 2 includes a light-facing surface 2A near the light-incident surface 1C and a light-facing surface 2B near the light-incident surface 1D. The light-facing surface 2A receives light emitted from the light-incident surface 1C by the light source 100 and reflects it, causing it to exit from the main surface 1B in a predetermined pattern. The light-facing surface 2B receives light emitted from the light-incident surface 1D by the light source 300 and also reflects it, causing it to exit from the main surface 1B in a predetermined pattern. As a result, the patterned light energy emitted from the main surface 1B is further enhanced.

[0076] In some embodiments, both the light-facing surface 2A and the light-facing surface 2B are planes inclined relative to the main surface 1A, and the angle α between the light-facing surface 2A and the main surface 1A can be 35°-55°, and the angle β between the light-facing surface 2B and the main surface 1A can be 35°-55°. Furthermore, the reflective layer 6 covers at least both the light-facing surface 2A and the light-facing surface 2B simultaneously.

[0077] In addition, for the embodiments shown in Figures 7 and 8, in order to improve the light utilization rate, the reflective layer 6 can be configured to cover the entire main surface 1A in the manner shown in Figure 6, or the reflective layer 6 can be configured to cover only the light-facing surfaces 2A and 2B in the manner shown in Figure 9.

Claims

1. A light guide component, characterized in that, include: A light guide film includes a first main surface and a second main surface opposite to each other, and a plurality of light guide microstructures arranged in a predetermined pattern on the first main surface. The plurality of light guide microstructures are configured to guide light rays incident on the plurality of light guide microstructures within the light guide film to exit from the second main surface in the predetermined pattern. A decorative layer covering the second main surface includes a light-transmitting area with a light transmittance of 80%-100% and a light-blocking area with a light transmittance of 0-30%, wherein the position of the light-transmitting area corresponds to the position of the specified pattern on the second main surface.

2. The light guide assembly according to claim 1, characterized in that, The plurality of light-guiding microstructures are configured to reflect light incident on the plurality of light-guiding microstructures within the light-guiding film and exit from the second main surface in the prescribed pattern; it also includes: a reflective layer that directly covers the light-guiding microstructures from the first main surface side.

3. The light guide assembly according to claim 2, characterized in that, The reflective layer also directly covers the portion of the first main surface other than the light-guiding microstructure.

4. The light guide assembly according to claim 1, characterized in that, The light guide film includes a first light-incident surface and a second light-incident surface, which are two opposing sides of the light guide film. The light guide microstructure includes: a first light-facing surface configured to receive light from the first light-incident surface and reflect the light from the first light-incident surface to exit from the second main surface in the prescribed pattern; and a second light-facing surface configured to receive light from the second light-incident surface and reflect the light from the second light-incident surface to exit from the second main surface in the prescribed pattern.

5. The light guide assembly according to claim 1, characterized in that, The modification layer includes: a base layer covering the second main surface; and a pattern layer formed on the side of the base layer opposite to the second main surface, including a cutout area defining the light-transmitting area and a non-cutout area defining the light-blocking area, wherein the non-cutout area has a lower light transmittance than the base layer.

6. The light guide assembly according to claim 5, characterized in that, The base layer is formed as a complete layer that directly covers and thereby protects the second main surface.

7. The light guide assembly according to claim 1, characterized in that, The modified layer contains fluorescent material.

8. The light guide assembly according to claim 1, characterized in that, The light-transmitting area is formed as a hollow structure that penetrates the decorative layer.

9. The light guide assembly according to claim 1, characterized in that, The shape and size of the light-transmitting area are formed to match the shape and size of the prescribed pattern on the second main surface.

10. The light guide assembly according to claim 1, characterized in that, Both the light guide film and the modification layer are flexible structures that can be bent.

11. A display device, characterized in that, include: The light guide assembly as described in any one of claims 1 to 10; A light source emits light rays that are coupled into the light guide film from the side.

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