Display module and display device

Abstract

This application relates to a display module and a display device. The display module includes multiple display devices, each including a light-emitting unit and a light guide. The light guide is disposed on one side of the light-emitting unit along a first direction and has a light-emitting surface perpendicular to a second direction. The light guide is used to transmit emitted light emitted by the light-emitting unit and emits it through the light-emitting surface. The first direction and the second direction intersect each other. By using the light guide, the display module can convert the emitted light from the light-emitting unit disposed on one side of the light guide along the first direction into light emitted from the light-emitting surface perpendicular to the second direction, thus realizing the display function of the display module. The fact that the light-emitting unit is disposed on one side of the light guide along the first direction relatively reduces the light-transmitting area occupied by the light-emitting unit, thereby improving the light transmittance of the display module.

Description

Technical Field

[0001] This application relates to the field of transparent display technology, and in particular to a display module and display device. Background Technology

[0002] Transparent display devices can transmit ambient light while displaying image information, thus enabling virtual information to coexist and interact well with reality. They are an important carrier for the successful application of augmented reality (AR) technology.

[0003] However, transparent display devices in related technologies have low light transmittance and poor display performance. Summary of the Invention

[0004] Therefore, it is necessary to provide a display module and display device to address the problems of low light transmittance and poor display effect of transparent display devices in related technologies.

[0005] A display module, the display module comprising:

[0006] Multiple display devices, each display device including a light-emitting unit and a light guide, the light guide being disposed on one side of the light-emitting unit along a first direction, and the light guide having a light-emitting surface perpendicular to a second direction; the light guide is used to transmit emitted light emitted by the light-emitting unit, and emitted through the light-emitting surface;

[0007] The first direction and the second direction intersect each other.

[0008] In one embodiment, the dimension of the light guide along the first direction is a, and the dimension of the light-emitting unit along the first direction is b, where a > b;

[0009] Optionally, the dimension b of the light-emitting unit along the first direction satisfies: b ≤ 200 μm;

[0010] Optionally, the dimension a of the light guide along the first direction and the dimension b of the light-emitting unit along the first direction satisfy the relationship: a:b≥20.

[0011] In one embodiment, the light guide includes an optical waveguide material;

[0012] Optionally, the optical waveguide material includes one or more of polymethacrylate, polycarbonate, polysiloxane, and silicon nitride;

[0013] Optionally, the light guide includes an optical waveguide material and a fluorescent material;

[0014] Optionally, the fluorescent material includes one or more of organic fluorescent materials, rare earth fluorescent materials, and semiconductor quantum dots.

[0015] In one embodiment, the display module further includes a plurality of reflective elements corresponding to the plurality of display devices;

[0016] The reflector is at least disposed on the side of the corresponding light guide that is away from the corresponding light-emitting unit along the first direction;

[0017] Optionally, the reflective element includes two first reflective portions respectively disposed on opposite sides of the display device along a third direction, and a second reflective portion connected between the two first reflective portions; the second reflective portion is disposed on the side of the corresponding light guide element away from the corresponding light-emitting unit along the first direction; wherein, the first direction, the second direction and the third direction intersect each other;

[0018] Optionally, the reflector is disposed around the corresponding display device about an axis parallel to the second direction;

[0019] Optionally, the dimension of the first reflective part along the third direction is L1, and the dimension of the second reflective part along the first direction is L2. The dimension L1 of the first reflective part along the third direction satisfies: L1≤100μm, and the dimension L2 of the second reflective part along the first direction satisfies: L2≤100μm.

[0020] Optionally, the dimension of the light guide along the first direction is a, and the dimension a of the light guide along the first direction and the dimension L2 of the second reflective part along the first direction satisfy the relationship: a:L2≥20;

[0021] Optionally, the dimension of the light guide in the third direction is c, and the dimension c of the light guide in the third direction and the dimension L1 of the first reflective part in the third direction satisfy the relationship: c: L1≥20.

[0022] In one embodiment, the display device further includes a circuit trace portion disposed on one side of the light-emitting unit along the second direction, and the circuit trace portion is electrically connected to the light-emitting unit;

[0023] Optionally, the circuit trace is located on the side of the light-emitting unit away from the light-emitting surface along the second direction;

[0024] Optionally, the orthographic projection of the circuit trace in the reference plane is located within the range of the orthographic projection of the light-emitting unit in the reference plane, and the reference plane is perpendicular to the second direction;

[0025] Optionally, a portion of the circuit trace is located on one side of the light-emitting unit along the second direction, and another portion of the circuit trace is located on one side of the reflector along the second direction. The orthographic projection of the circuit trace in the reference plane is located within the range of the orthographic projections of the light-emitting unit and the reflector in the reference plane.

[0026] In one embodiment, the display device includes a protective portion disposed on the side of the light-emitting unit away from the circuit trace portion along the second direction;

[0027] Optionally, the orthographic projection of the protective part in the reference plane is located within the range of the orthographic projection of the light-emitting unit in the reference plane;

[0028] Optionally, the protective portion comprises a resin or a silicon-based inorganic compound.

[0029] In one embodiment, the display module includes a substrate and a cover plate, the substrate and the cover plate being spaced apart along the second direction, and the display device being disposed between the substrate and the cover plate;

[0030] Multiple arrays of the display devices are arranged between the substrate and the cover plate;

[0031] Optionally, the substrate has a first film layer on the side facing the display device, and the cover plate has a second film layer on the side facing the display device;

[0032] Optionally, the first film layer includes one or both of a silver film layer and an aluminum film layer;

[0033] Optionally, the second film layer comprises a high-refractive-index resin or a silicon-based inorganic compound.

[0034] In one embodiment, the display module has a display area and a border area surrounding the display area, and a plurality of display devices are disposed within the display area;

[0035] The width of the border area is M, where M is 2mm-4mm. The width of the border area is the dimension of the border area along the direction from the display area to the border area.

[0036] In one embodiment, the light-emitting unit includes an organic light-emitting diode device or a light-emitting diode device;

[0037] Optionally, the plurality of display devices include a first display element, a second display element, and a third display element, wherein one of the first display element, the second display element, and the third display element emits red light, another emits blue light, and yet another emits green light.

[0038] According to another aspect of this application, a display device is provided, including the display module described above.

[0039] The aforementioned display module and display device can convert the emitted light from the light-emitting unit located on one side of the light guide along the first direction into light emitted from the light-emitting surface perpendicular to the second direction by setting the light guide, thereby realizing the display function of the display module. The light-emitting unit is located on one side of the light guide along the first direction, which relatively reduces the light-transmitting area occupied by the light-emitting unit, thereby improving the transmittance of the display module and thus improving the display effect of the display device. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of the display module in this application.

[0041] Figure 2 This is a side sectional view of the display device of this application.

[0042] Figure 3 for Figure 2 The image shows a top sectional view of the display device.

[0043] Figure 4 A side cross-sectional view of a display device with added fluorescent material.

[0044] Figure 5 for Figure 2 The illustrated embodiment shows four top cross-sectional views of the display device arranged in an array.

[0045] Figure 6 This is a diagram showing the layout of display devices of different sizes.

[0046] Figure 7 for Figure 2 The illustrated embodiment shows two side-by-side sectional views of the display device.

[0047] Figure 8 This is a side sectional view of a display device according to another embodiment.

[0048] Explanation of reference numerals in the attached figures:

[0049] 10. Display module;

[0050] 100. Display device; 110. Light-emitting unit; 120. Light guide; 121. Fluorescent material; 131. First reflective part; 132. Second reflective part;

[0051] 140. Circuit routing section; 150. Protection section;

[0052] 210, Substrate; 220, Cover plate; 230, First film layer; 240, Second film layer;

[0053] 300, border area; 400, display area;

[0054] F1, first direction; F2, second direction; F3, third direction. Detailed Implementation

[0055] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0057] Furthermore, 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0061] Transparent display devices, by transmitting ambient light while displaying image information, enable seamless coexistence and interaction between virtual and real information, making them a crucial medium for the successful application of augmented reality (AR) technology. They hold broad application prospects in interior and exterior decoration, automotive displays, and wearable displays.

[0062] However, current transparent display devices still mostly use conventional top-emission / bottom-emission technology. Common anti-reflection methods include adjusting the pixel and array trace spacing, reducing the area of ​​the metal layer, and thinning the film thickness of the device. These methods are difficult to implement and make it hard to achieve good transparent display effects.

[0063] Currently, most transparent display devices employ conventional top-emitting / bottom-emitting technologies. To ensure sufficient pixel luminous area and brightness, common measures include: (1) increasing the luminous area of ​​a single pixel, and (2) increasing pixel density (PPI, Pixels Per Inch). However, the first measure requires a large metal layer area, and the second measure requires a large number of metal traces and thin-film transistors (TFTs). These factors result in an excessively large area of ​​opaque structures on the substrate, which is detrimental to achieving high transmittance. Therefore, conventional top-emitting or bottom-emitting device structures cannot simultaneously achieve "sufficient luminous area" and "high background light transmittance," which is not conducive to their application in the field of transparent displays.

[0064] This application provides a display module 10 and a display device to improve the light transmittance of the display module 10, thereby improving the display effect of the display device.

[0065] See Figure 1 , Figure 2 and Figure 3 As shown, the display module 10 provided in this application has a display area 400 and a border area 300 surrounding the display area 400. The display module 10 includes a plurality of display devices 100, which are disposed within the display area 400, and perform display functions within the display area 400 while allowing backlight to pass through.

[0066] The display device 100 includes a light-emitting unit 110 and a light guide 120. The light guide 120 is disposed on one side of the light-emitting unit 110 along a first direction F1, and has a light-emitting surface perpendicular to a second direction F2. The light guide 120 is used to transmit the emitted light emitted by the light-emitting unit 110 and emits it through the light-emitting surface. The first direction F1 and the second direction F2 intersect each other. It can be understood that the light guide 120 plays a light-guiding role, changing the propagation direction of the emitted light emitted by the light-emitting unit 110, so that the emitted light is emitted from the light-emitting surface. The light-emitting unit 110 emits light from the side of the light guide 120. In some embodiments, the emitted light emitted by the light-emitting unit 110 propagates along the first direction F1 parallel to the substrate 210, and the light guide 120 conducts the emitted light to change its propagation direction to propagate along the second direction F2 and emit it from the light-emitting surface.

[0067] This application converts the emitted light from the light-emitting unit 110 into light emitted from a light-emitting surface perpendicular to the second direction F2 by setting the light guide 120, thereby realizing the display function of the display module 10. The light-emitting unit 110 is located on one side of the light guide 120 along the first direction F1, which relatively reduces the light-transmitting area occupied by the light-emitting unit 110 and can improve the light transmittance of the display module 10.

[0068] In some embodiments, the width of the bezel area 300 is M, where M is 2mm-4mm. The width of the bezel area 300 is the dimension of the bezel area 300 along the direction from the display area 400 to the bezel area 300. The bezel area 300 is beneficial for protecting the display area 400, and the narrow width of the bezel area 300 allows the display area 400 to have a larger display area, thereby improving the display effect of the display device.

[0069] In some embodiments, the display module 10 includes a substrate 210, a plurality of display devices 100 are disposed on one side of the substrate 210 along the second direction F2, and a light-emitting unit 110 is disposed on one side of the light guide 120 along the first direction F1. The light-emitting unit 110 emits light in a direction parallel to the surface of the substrate 210 and pointing towards the light guide 120. The light-emitting unit 110 is disposed on the side of the light guide 120, and its area relative to the light-emitting surface of the light guide 120 is relatively small, which helps to ensure good light transmission and display effects. The light guide 120 converts the light emitted by the light-emitting unit 110 along the surface of the substrate 210 into light that propagates towards the light-emitting surface and is emitted from the light-emitting surface. Light transmission can be achieved without setting up additional structures, which is beneficial to the miniaturization design of the display module 10.

[0070] like Figure 3 As shown, the dimension of the light guide 120 along the first direction F1 is a, and the dimension of the light-emitting unit 110 along the first direction F1 is b, where a > b, and the dimension b of the light-emitting unit 110 along the first direction F1 satisfies: b ≤ 200 μm. Optionally, the dimension a of the light guide 120 along the first direction F1 and the dimension b of the light-emitting unit 110 along the first direction F1 satisfy the relationship: a: b ≥ 20. It can be understood that the dimension of the light-emitting unit 110 along the first direction F1 is relatively smaller than the dimension of the light guide 120 along the first direction F1, that is, the proportion of the dimension of the light-emitting unit 110 along the first direction F1 in the display module 10 is small, which can ensure that the area of ​​the light-emitting surface of the light guide 120 is large enough to ensure good light transmission and display effects.

[0071] In some embodiments, the light guide 120 includes an optical waveguide material. Optionally, the optical waveguide material includes one or more of polymethyl methacrylate, polycarbonate, polysiloxane and silicon nitride. The light guide 120 can convert light parallel to the plane of the substrate 210 into light perpendicular to the plane of the substrate 210 and emit it to generate a display image. No additional complex structure is required, which facilitates the miniaturization design of the display module 10.

[0072] Optionally, the light guide 120 includes an optical waveguide material and a fluorescent material 121, such as... Figure 4 As shown, doping the optical waveguide material with fluorescent material 121 can increase the luminous brightness of the light guide 120 and improve the display efficiency of the display module 10. Optionally, the fluorescent material 121 includes one or more of organic fluorescent material 121, rare earth fluorescent material 121 and semiconductor quantum dots.

[0073] In some embodiments, the display module 10 further includes a plurality of reflectors corresponding to a plurality of display devices 100. The reflectors are at least disposed on the side of the corresponding light guide 120 away from the corresponding light-emitting unit 110 along the first direction F1. The light-emitting unit 110 emits light toward the side of the light guide 120. The reflectors located on the side of the light guide 120 away from the light-emitting unit 110 can ensure that the light propagates within the light guide 120, that is, prevent the light from leaking out, and improve the utilization rate of the light emitted by the light-emitting unit 110.

[0074] Optionally, such as Figure 5 and Figure 6 As shown, the reflector includes two first reflective portions 131 respectively disposed on opposite sides of the display device 100 along a third direction F3, and a second reflective portion 132 connected between the two first reflective portions 131. The second reflective portion 132 is disposed on the side of the corresponding light guide 120 away from the corresponding light-emitting unit 110 along a first direction F1. The first direction F1, the second direction F2, and the third direction F3 intersect each other. Light rays diverging along the third direction F3 are kept within the light guide 120 by reflection from the two first reflective portions 131, and light rays diverging along the first direction F1 are also kept within the light guide 120 by reflection from the second reflective portion 132. This prevents light from leaking out from the side of the light guide 120, allowing light to be emitted from the light-emitting surface of the light guide 120 as much as possible, thus improving light utilization.

[0075] like Figure 6 In this embodiment, two adjacent display devices 100 share a reflective part. Specifically, the light-emitting unit 110 of one of the two adjacent display devices 100 is adjacent to the second reflective part 132 of the other. Therefore, the two adjacent display devices 100 can share this second reflective part 132, so that no light will leak out from the side where the light-emitting unit 110 is located, which further improves the light utilization rate. At the same time, the two sharing a reflective part helps to reduce the area occupied by the opaque reflective part, increase the proportion of the light-emitting surface area, and further improve the display effect and light transmittance of the display module 10.

[0076] Optionally, such as Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the reflector is also provided so that it surrounds the corresponding display device 100 around an axis parallel to the second direction F2. That is, in some embodiments, the reflector can be arranged around the display device 100 to ensure that no light leaks out from any part of the light guide 120, including the side where the light-emitting unit 110 is located, thereby greatly improving the utilization rate of light.

[0077] Optionally, please continue reading Figure 3As shown, the dimension of the first reflective part 131 along the third direction F3 is L1, and the dimension of the second reflective part 132 along the first direction F1 is L2. The dimension L1 of the first reflective part 131 along the third direction F3 satisfies: L1≤100μm, and the dimension L2 of the second reflective part 132 along the first direction F1 satisfies: L2≤100μm. Along the direction away from the light guide 120, the width of the first reflective part 131 and the second reflective part 132 does not exceed 100μm, ensuring that the first reflective part 131 and the second reflective part 132 will not affect the proportion of the light-emitting surface, that is, ensuring that the area proportion of the light-emitting surface is large enough to obtain good light transmittance and display effect.

[0078] Optionally, the dimension of the light guide 120 along the first direction F1 is 'a'. The dimension 'a' of the light guide 120 along the first direction F1 and the dimension L2 of the second reflector 132 along the first direction F1 satisfy the relationship: a:L2≥20, thereby ensuring that the proportion of the light-emitting surface along the first direction F1 is sufficiently large. Optionally, the dimension of the light guide 120 along the third direction F3 is 'c'. The dimension 'c' of the light guide 120 along the third direction F3 and the dimension L1 of the first reflector 131 along the third direction F3 satisfy the relationship: c:L1≥20, thereby ensuring that the proportion of the light-emitting surface along the third direction F3 is sufficiently large, thereby ensuring that the light-emitting surface has a sufficiently large area proportion.

[0079] In some embodiments, such as Figure 2 , Figure 4 and Figure 7 As shown, the display device 100 also includes a circuit trace portion 140, which is disposed on one side of the light-emitting unit 110 along the second direction F2. The circuit trace portion 140 is electrically connected to the light-emitting unit 110. Optionally, the circuit trace portion 140 is disposed on the side of the light-emitting unit 110 away from the light-emitting surface along the second direction F2. Typically, the light-emitting unit 110 contains a thin-film transistor (TFT), which is an opaque structure. By disposing of the circuit trace portion 140 at the light-emitting unit 110, the circuit trace portion 140 can avoid the light-emitting surface and prevent the circuit trace portion 140 from blocking the light-emitting surface. This allows the light-emitting surface of the light guide 120 to have a larger area ratio, which is beneficial for obtaining better display effects and light transmission efficiency.

[0080] Optionally, the orthographic projection of the circuit trace 140 in the reference plane is located within the range of the orthographic projection of the light-emitting unit 110 in the reference plane. The reference plane is perpendicular to the second direction F2, so that the circuit trace 140 completely avoids the light-emitting surface and the light emission efficiency of the light-emitting surface and the light transmission efficiency of the light guide 120 are not affected by the arrangement of the circuit trace 140.

[0081] In some embodiments, such as Figure 8As shown, the circuit trace 140 can also be arranged such that one part of the circuit trace 140 is located on one side of the light-emitting unit 110 along the second direction F2, and the other part is located on one side of the reflector along the second direction F2. The orthographic projection of the circuit trace 140 in the reference plane is within the range of the orthographic projections of the light-emitting unit 110 and the reflector in the reference plane. Typically, the light guide 120 contains a reflective metal film layer and is an opaque structure. Therefore, placing the circuit trace 140 on one side of the reflector along the second direction F2 will not affect the area ratio of the light-emitting surface, thus improving the light transmission efficiency of the light-emitting surface.

[0082] In some embodiments, the circuit wiring portion 140 mainly includes a driving circuit for the light-emitting unit 110, and the circuit wiring portion 140 is electrically connected to the light-emitting unit 110 to control whether the light-emitting unit 110 emits light or not.

[0083] In some embodiments, continue reading Figure 2 , Figure 4 and Figure 7 As shown, the display device 100 includes a protection part 150. The protection part 150 is disposed on the side of the light-emitting unit 110 away from the circuit trace part 140 along the second direction F2 to protect the light-emitting unit 110. Similarly, the protection part 150 is disposed at the light-emitting unit 110 so that the protection part 150 can avoid the light-emitting surface and prevent the protection part 150 from blocking the light-emitting surface. This improves the protection effect of the light-emitting unit 110 while ensuring that the light-emitting surface of the light guide 120 has a large area ratio, which is conducive to obtaining better display effect and light transmission efficiency.

[0084] Optionally, the orthographic projection of the protective part 150 in the reference plane is located within the range of the orthographic projection of the light-emitting unit 110 in the reference plane, ensuring that the protective part 150 completely avoids the light-emitting surface and that the light emission efficiency of the light-emitting surface and the light transmission efficiency of the light guide 120 are not affected by the setting of the protective part 150.

[0085] Optionally, the protective portion 150 includes a resin or silicon-based inorganic compound to protect the light-emitting unit 110.

[0086] It is understood that this application places the light-emitting unit 110 on the side of the light guide 120 to emit light, and sets the circuit wiring part 140 and the protection part 150 on both sides of the light-emitting unit 110 along the second direction F2, which can relatively increase the light-transmitting area and display area of ​​the light guide 120, improve the display effect, and reduce the screen-like feeling.

[0087] In some embodiments, such as Figure 6As shown, the light-emitting unit 110 is positioned on the side of the light guide 120 to emit light. This can be achieved by positioning the light-emitting unit 110 on the longer side of the light guide 120, making the light incident on the light guide 120 more uniform and improving the uniformity of light emission from the light guide 120. In some embodiments, the light-emitting unit 110 includes an organic light-emitting diode (OLED) device or a light-emitting diode device, etc.

[0088] In some embodiments, see Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown, the display module 10 includes a substrate 210 and a cover plate 220. The substrate 210 and the cover plate 220 are spaced apart along the second direction F2. A display device 100 is disposed between the substrate 210 and the cover plate 220. On the plane where the substrate 210 is located, a plurality of display devices 100 are arranged between the substrate 210 and the cover plate 220. In some embodiments, the plurality of display devices 100 are arranged in an array between the substrate 210 and the cover plate 220. Optionally, the plurality of display devices 100 includes a first display element, a second display element, and a third display element. One of the first display element, the second display element, and the third display element emits red light, another emits blue light, and yet another emits green light to achieve color display of the display module 10, thereby improving the display effect of the display module 10.

[0089] Optionally, a first film layer 230 is provided on the side of the substrate 210 facing the display device 100, and a second film layer 240 is provided on the side of the cover plate 220 facing the display device 100. The first film layer 230 is a high-transmittance, high-reflectance film layer, which can improve light transmittance and enhance the light transmission effect of the display module 10. At the same time, it reflects light to the light-emitting surface for emission, thereby improving light utilization and enhancing the display effect of the display module 10. Optionally, the first film layer 230 includes one or both of a silver film layer and an aluminum film layer.

[0090] Optionally, the second film layer 240 is a high-transmittance, high-refractive-index film layer to improve the light transmission and display effect of the display module 10. In some embodiments, the second film layer 240 includes a high-refractive-index resin or a silicon-based inorganic compound. The arrangement of the first film layer 230 and the second film layer 240 is beneficial for collecting light from non-emitting directions, thereby increasing light extraction efficiency.

[0091] The display module 10 provided in this application converts the emitted light from the light-emitting unit 110 into light emitted from a light-emitting surface perpendicular to the second direction F2 through the setting of the light guide 120, thereby realizing the display function of the display module 10. The light-emitting unit 110 is located on one side of the light guide 120 along the first direction F1, thereby realizing side light emission, which relatively reduces the light-transmitting area occupied by the light-emitting unit 110 and helps to improve the transmittance of the display module 10. This application also provides a circuit trace 140 located on one side of the light-emitting unit 110 along the second direction F2, and a protection part 150 located on the same side of the light-emitting unit 110 along the second direction F2. This protects the light-emitting unit 110 and prevents the circuit trace 140 and protection part 150 from interfering with the light guide 120. This ensures that both the circuit trace 140 and protection part 150 avoid obstructing the light-emitting surface, resulting in a larger area ratio for the light-emitting surface of the light guide 120, which is beneficial for achieving better display effects and light transmission efficiency. This application also provides a reflector to improve light utilization. Furthermore, the size of the reflector is adjusted to increase the area ratio of the light guide 120, thereby improving the light transmittance and display effect of the display module 10.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display module, characterized by The display module includes: Multiple display devices, each display device including a light-emitting unit and a light guide, the light guide being disposed on one side of the light-emitting unit along a first direction, and the light guide having a light-emitting surface perpendicular to a second direction; the light guide is used to transmit emitted light emitted by the light-emitting unit, and emitted through the light-emitting surface; Wherein, the first direction and the second direction intersect each other; The display module also includes a plurality of reflective elements corresponding to the plurality of display devices; The reflector is at least disposed on the side of the corresponding light guide that is away from the corresponding light-emitting unit along the first direction; The display device further includes a circuit trace portion, which is disposed on one side of the light-emitting unit along the second direction and is electrically connected to the light-emitting unit; the circuit trace portion is disposed on the side of the light-emitting unit away from the light-emitting surface along the second direction. The light-emitting unit includes an organic light-emitting diode device; The display device includes a protective part, which is disposed on the side of the light-emitting unit away from the circuit trace along the second direction; The reflective element includes a reflective portion; two adjacent display devices along the first direction share a reflective portion.

2. The display module of claim 1, wherein, The dimension of the light guide along the first direction is a, and the dimension of the light-emitting unit along the first direction is b, where a > b.

3. The display module according to claim 2, characterized in that, The dimension b of the light-emitting unit along the first direction satisfies: b≤200μm; and / or The dimension a of the light guide along the first direction and the dimension b of the light-emitting unit along the first direction satisfy the relationship: a:b≥20.

4. The display module of claim 1, wherein, The light guide component includes an optical waveguide material.

5. The display module of claim 4, wherein, The optical waveguide material includes one or more of polymethyl methacrylate, polycarbonate, polysiloxane, and silicon nitride.

6. The display module of claim 4, wherein, The light guide includes optical waveguide material and fluorescent material.

7. The display module according to claim 6, characterized in that, The fluorescent material includes one or more of organic fluorescent materials, rare earth fluorescent materials, and semiconductor quantum dots.

8. The display module according to any one of claims 1-3, characterized in that, The reflective element includes two first reflective portions respectively disposed on opposite sides of the display device along a third direction, and a second reflective portion connected between the two first reflective portions; the second reflective portion is disposed on the side of the corresponding light guide element away from the corresponding light-emitting unit along the first direction; wherein, the first direction, the second direction and the third direction intersect each other.

9. The display module of claim 8, wherein, The reflector is arranged around the corresponding display device around an axis parallel to the second direction.

10. The display module of claim 8, wherein, The dimension of the first reflective part along the third direction is L1, and the dimension of the second reflective part along the first direction is L2. The dimension L1 of the first reflective part along the third direction satisfies: L1≤100μm, and the dimension L2 of the second reflective part along the first direction satisfies: L2≤100μm.

11. The display module of claim 8, wherein, The dimension of the light guide along the first direction is a, and the dimension a of the light guide along the first direction and the dimension L2 of the second reflective part along the first direction satisfy the relationship: a:L2≥20.

12. The display module of claim 8, wherein, The dimension of the light guide along the third direction is c, and the dimension c of the light guide along the third direction and the dimension L1 of the first reflective part along the third direction satisfy the relationship: c: L1≥20.

13. The display module of claim 1, wherein, The orthographic projection of the circuit trace in the reference plane is located within the range of the orthographic projection of the light-emitting unit in the reference plane, and the reference plane is perpendicular to the second direction.

14. The display module of claim 13, wherein, A portion of the circuit trace is located on one side of the light-emitting unit along the second direction, and another portion of the circuit trace is located on one side of the reflector along the second direction. The orthographic projection of the circuit trace in the reference plane is located within the range of the orthographic projections of the light-emitting unit and the reflector in the reference plane.

15. The display module of claim 13, wherein, The orthographic projection of the protective part in the reference plane is located within the range of the orthographic projection of the light-emitting unit in the reference plane; and / or The protective part comprises resin or silicon-based inorganic compound.

16. The display module of claim 1, wherein, The display module includes a substrate and a cover plate, the substrate and the cover plate are spaced apart along the second direction, and the display device is disposed between the substrate and the cover plate; Multiple display device arrays are arranged between the substrate and the cover plate.

17. The display module of claim 16, wherein, The substrate has a first film layer on the side facing the display device, and the cover plate has a second film layer on the side facing the display device.

18. The display module of claim 17, wherein, The first film layer includes one or both of silver and aluminum films; and / or The second film layer comprises a high-refractive-index resin or a silicon-based inorganic compound.

19. The display module of claim 1, wherein, The display module has a display area and a border area surrounding the display area, and a plurality of display devices are disposed within the display area; The width of the border area is M, where M is 2mm-4mm. The width of the border area is the dimension of the border area along the direction from the display area to the border area.

20. The display module of claim 1, wherein, The plurality of display devices include a first display element, a second display element, and a third display element, wherein one of the first display element, the second display element, and the third display element emits red light, another emits blue light, and yet another emits green light.

21. A display device comprising: Includes the display module as described in any one of claims 1-20.

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