Display module and display device

Abstract

The invention relates to a display module and a display device.The display module comprises a plurality of display parts, each display part comprises a light-emitting unit and a light guide part, the light guide parts are arranged on the sides, in the first direction, of the light-emitting units, each light guide part is provided with a light-emitting face perpendicular to the second direction, and the light guide parts are used for transmitting emergent light emitted by the light-emitting units; the first direction and the second direction intersect with each other. According to the display module, the emergent light emitted by the light-emitting unit arranged on the side, in the first direction, of the light guide part can be converted into the emergent light emitted from the light-emitting face perpendicular to the second direction through the light guide part, and the display function of the display module is achieved; the light-transmitting area occupied by the light-emitting units is relatively reduced, and the light transmittance of the display module can be improved.

Description

Technical Field

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

[0002] Since transparent display devices can transmit background ambient light while displaying image information, they can achieve good coexistence and interaction between virtual information and reality. They are an important carrier for the successful application of augmented reality (AR) technology.

[0003] However, the transparent display device in the related art has low light transmittance and poor display effect. Summary of the invention

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

[0005] A display module, comprising:

[0006] A plurality of display devices, each comprising a light emitting unit and a light guide, wherein 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 the light emitted by the light emitting unit and emit the light through the light emitting surface;

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

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

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

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

[0011] In one of the embodiments, the light guide comprises 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 comprises an optical waveguide material and a fluorescent material;

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

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

[0016] The reflective element is at least arranged on a side of the corresponding light guide element away from the corresponding light emitting unit along the first direction;

[0017] Optionally, the reflector comprises two first reflective portions respectively arranged on opposite sides of the display device along the third direction, and a second reflective portion connected between the two first reflective portions; the second reflective portion is arranged on a side of the corresponding light guide member 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 reflective element is arranged around the corresponding display device around an axis parallel to the second direction;

[0019] Optionally, the size of the first light reflecting portion along the third direction is L1, the size of the second light reflecting portion along the first direction is L2, the size L1 of the first light reflecting portion along the third direction satisfies: L1≤100 μm, and the size L2 of the second light reflecting portion along the first direction satisfies: L2≤100 μm;

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

[0021] Optionally, a dimension of the light guide member along the third direction is c, and the dimension c of the light guide member along the third direction and a dimension L1 of the first light reflecting portion along the third direction satisfy the relationship: c: L1 ≥ 20.

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

[0023] Optionally, the circuit wiring portion is arranged on a side of the light emitting unit away from the light emitting surface along the second direction;

[0024] Optionally, the orthographic projection of the circuit wiring portion in a 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 wiring portion is arranged on one side of the light-emitting unit along the second direction, and another portion of the circuit wiring portion is arranged on one side of the reflective element along the second direction, and the orthographic projection of the circuit wiring portion in the reference plane is within the range of the orthographic projections of the light-emitting unit and the reflective element in the reference plane.

[0026] In one embodiment, the display device includes a protection portion, and the protection portion is arranged on a side of the light-emitting unit away from the circuit wiring portion along the second direction;

[0027] Optionally, the orthographic projection of the protection portion 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 protection portion includes 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 are spaced apart along the second direction, and the display device is disposed between the substrate and the cover plate;

[0030] A plurality of display device arrays are arranged between the substrate and the cover plate;

[0031] Optionally, a first film layer is disposed on a side of the substrate facing the display device, and a second film layer is disposed on a side of the cover plate 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 includes a high refractive index resin or a silicon-based inorganic compound.

[0034] In one embodiment, the display module has a display area and a frame area arranged around the display area, and a plurality of the display devices are arranged in the display area;

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

[0036] In one of the embodiments, the light emitting unit comprises 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, one of the first display element, the second display element and the third display element emits red light, another emits blue light, and another emits green light.

[0038] According to another aspect of the present application, a display device is provided, comprising the above-mentioned display module.

[0039] The above-mentioned display module and display device can convert the output light emitted by the light-emitting unit arranged on one side of the light guide along the first direction into light emitted from the light output surface perpendicular to the second direction through the setting of the light guide, thereby realizing the display function of the display module. The light-emitting unit is arranged on one side of the light guide along the first direction, which relatively reduces the light-transmitting area occupied by the light-emitting unit, can improve the transmittance of the display module, and further improve the display effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0042] Figure 3 for Figure 2 A top cross-sectional view of the display device is shown.

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

[0044] Figure 5 for Figure 2 The illustrated embodiment is a top cross-sectional view of four display devices arranged in an array.

[0045] Figure 6 The following is a diagram showing the arrangement structure of display devices of different sizes.

[0046] Figure 7 for Figure 2 Two juxtaposed side cross-sectional views of a display device of the illustrated embodiment.

[0047] Figure 8 FIG. 4 is a side cross-sectional view of a display device according to another embodiment.

[0048] Description of reference numerals:

[0049] 10. Display module;

[0050] 100, display device; 110, light emitting unit; 120, light guide; 121, fluorescent material; 131, first light reflecting portion; 132, second light reflecting portion;

[0051] 140, circuit routing unit; 150, protection unit;

[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 DESCRIPTION

[0055] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0061] Transparent display devices can transmit background ambient light while displaying image information, so they can achieve good coexistence and interaction between virtual information and reality, and are an important carrier for the successful application of augmented reality (AR) technology. In the future, they will have broad application prospects in indoor and outdoor decoration, vehicle display, wearable display and other fields.

[0062] However, current transparent display devices still mostly use conventional top-emitting / bottom-emitting technology. Commonly used anti-reflection methods include adjusting the spacing between pixels and array wiring, reducing the area of ​​the metal layer, and thinning the device film thickness. The process is difficult and it is difficult to achieve a good transparent display effect.

[0063] Currently, most transparent display devices use conventional top-emitting / bottom-emitting technology. To ensure sufficient pixel luminous area and brightness, the following measures are commonly used: (1) increasing the luminous area of ​​a single pixel, and (2) increasing the pixel density (PPI, Pixels Per Inch). However, the first measure requires a larger metal layer area, and the second measure requires a larger number of metal traces and thin-film transistors (TFT, Thin Film Transistor). These will cause the opaque structure to spread over a large area on the substrate, which is not conducive to the realization of high transmittance. Therefore, it is difficult for conventional top-emitting or bottom-emitting device structures to simultaneously achieve "sufficient luminous area" and "high background light transmittance", which is not conducive to application in the field of transparent displays.

[0064] The present application provides a display module 10 and a display device, so as to improve the light transmittance of the display module 10 and further improve the display effect of the display device.

[0065] See also Figure 1 , Figure 2 and Figure 3 As shown, the display module 10 provided in the present application has a display area 400 and a frame area 300 arranged around the display area 400. The display module 10 includes a plurality of display devices 100. The plurality of display devices 100 are arranged in the display area 400 to realize the display function in the display area 400 and allow the background light 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 the light guide 120 has a light emitting surface perpendicular to a second direction F2. The light guide 120 is used to transmit the outgoing light emitted by the light emitting unit 110, and the light is emitted through the light emitting surface, wherein 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, changes the propagation direction of the outgoing light emitted by the light emitting unit 110, so that the outgoing light is emitted from the light emitting surface, and the light emitting unit 110 emits light from the side of the light guide 120. In some embodiments, the outgoing light emitted by the light emitting unit 110 propagates along the first direction F1 parallel to the substrate 210, and the light guide 120 guides the outgoing light to change the propagation direction to propagate along the second direction F2 and emit from the light emitting surface.

[0067] The present application converts the outgoing light emitted by 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-guiding member 120, thereby realizing the display function of the display module 10. The light-emitting unit 110 is arranged on one side of the light-guiding member 120 along the first direction F1, which relatively reduces the light-transmitting area occupied by the light-emitting unit 110, thereby improving the light transmittance of the display module 10.

[0068] In some embodiments, the width of the border area 300 is M, M is 2mm-4mm, and the width of the border area 300 is the dimension of the border area 300 in the direction from the display area 400 to the border area 300. The border area 300 is conducive to protecting the display area 400, and setting the width of the border area 300 to be narrow is conducive to the display area 400 having a larger display area, thereby helping to improve 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, a light emitting unit 110 is disposed on one side of the light guide 120 along the first direction F1, and the light emitting unit 110 emits light in a direction parallel to the board surface of the substrate 210 and pointing to the light guide 120. The light emitting unit 110 is disposed on the side of the light guide 120, and the area of ​​the light emitting surface of the light guide 120 is relatively small, which is conducive to ensuring a good light transmission effect and display effect. The light guide 120 converts the light emitted by the light emitting unit 110 along the board surface parallel to the substrate 210 into light that propagates toward the light emitting surface and is emitted from the light emitting surface. The light transmission can be achieved without setting an additional structure, which is conducive to the miniaturization design of the display module 10.

[0070] like Figure 3 As shown, the size of the light guide 120 along the first direction F1 is a, the size of the light emitting unit 110 along the first direction F1 is b, a>b, and the size b of the light emitting unit 110 along the first direction F1 satisfies: b≤200μm. Optionally, the size a of the light guide 120 along the first direction F1 and the size b of the light emitting unit 110 along the first direction F1 satisfy the relationship: a:b≥20. It can be understood that the size of the light emitting unit 110 along the first direction F1 is relatively small relative to the size of the light guide 120 along the first direction F1, that is, the size of the light emitting unit 110 along the first direction F1 in the display module 10 accounts for a small proportion, 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 polymethacrylate, polycarbonate, polysiloxane and silicon nitride. The light guide 120 can convert light parallel to the plane of the substrate 210 into light that is perpendicular to the plane of the substrate 210 and generates a display image without setting up additional complex structures, thereby facilitating 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 fluorescent material 121 in the optical waveguide material 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 also includes multiple reflectors corresponding to the multiple display devices 100, and the reflectors are at least arranged 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 is propagated in the light guide 120, that is, avoiding light leakage, thereby improving the utilization rate of the light emitted by the light emitting unit 110.

[0074] Alternatively, if Figure 5 and Figure 6 As shown, the reflector includes two first reflective portions 131 respectively arranged on opposite sides of the display device 100 along the third direction F3, and a second reflective portion 132 connected between the two first reflective portions 131, and the second reflective portion 132 is arranged on the side of the corresponding light guide 120 away from the corresponding light emitting unit 110 along the first direction F1. Among them, the first direction F1, the second direction F2 and the third direction F3 intersect each other. The light diverging along the third direction F3 can be kept propagating in the light guide 120 under the reflection of the two first reflective portions 131, and the light diverging along the first direction F1 can also be kept propagating in the light guide 120 under the reflection of the second reflective portion 132, so that the light can be prevented from leaking from the side of the light guide 120, and the light is emitted from the light emitting surface of the light guide 120 as much as possible, thereby improving the light utilization rate.

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

[0076] Alternatively, if Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, there is also a configuration in which a reflective member is arranged around the corresponding display device 100 around an axis parallel to the second direction F2, that is, in some embodiments, a reflective member can be arranged around the display device 100 to ensure that no light leaks around 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, continue to Figure 3As shown, the size of the first reflecting portion 131 along the third direction F3 is L1, and the size of the second reflecting portion 132 along the first direction F1 is L2. The size L1 of the first reflecting portion 131 along the third direction F3 satisfies: L1≤100μm, and the size L2 of the second reflecting portion 132 along the first direction F1 satisfies: L2≤100μm. In the direction away from the light guide 120, the widths of the first reflecting portion 131 and the second reflecting portion 132 do not exceed 100μm, ensuring that the first reflecting portion 131 and the second reflecting portion 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, and the dimension a of the light guide 120 along the first direction F1 and the dimension L2 of the second light reflecting portion 132 along the first direction F1 satisfy the relationship: a: L2 ≥ 20, thereby ensuring that the dimension 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, and the dimension c of the light guide 120 along the third direction F3 and the dimension L1 of the first light reflecting portion 131 along the third direction F3 satisfy the relationship: c: L1 ≥ 20, thereby ensuring that the dimension 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, Figure 2 , Figure 4 and Figure 7 As shown, the display device 100 also includes a circuit routing portion 140, which is arranged on one side of the light-emitting unit 110 along the second direction F2, and the circuit routing portion 140 is electrically connected to the light-emitting unit 110. Optionally, the circuit routing portion 140 is arranged on a side of the light-emitting unit 110 along the second direction F2 away from the light-emitting surface. Usually, the light-emitting unit 110 contains a thin-film transistor (TFT, Thin-Film Transistor), which is an opaque structure. The circuit routing portion 140 is arranged at the light-emitting unit 110, so that the circuit routing portion 140 can avoid the light-emitting surface, so as to prevent the circuit routing portion 140 from blocking the light-emitting surface, so that the light-emitting surface of the light guide 120 has a larger area occupancy, which is conducive to obtaining a better display effect and light transmission efficiency.

[0080] Optionally, the orthographic projection of the circuit routing portion 140 in the reference plane is located within the range of the orthographic projection of the light-emitting unit 110 in the reference plane, and the reference plane is perpendicular to the second direction F2, so that the circuit routing portion 140 completely avoids the light-emitting surface, and the light-emitting efficiency of the light-emitting surface and the light-transmitting efficiency of the light guide 120 are not affected at all by the setting of the circuit routing portion 140.

[0081] In some embodiments, Figure 8As shown, the layout of the circuit wiring part 140 can also be that a part of the circuit wiring part 140 is arranged on one side of the light-emitting unit 110 along the second direction F2, and the other part is arranged on one side of the reflector along the second direction F2, and the orthographic projection of the circuit wiring part 140 in the reference plane is located within the range of the orthographic projections of the light-emitting unit 110 and the reflector in the reference plane. Usually, the light guide 120 includes a reflective metal film layer, which is a light-proof structure. Therefore, the circuit wiring part 140 is arranged on one side of the reflector along the second direction F2, which still does not affect the area ratio of the light-emitting surface, thereby helping to improve the light transmission efficiency of the light-emitting surface.

[0082] In some embodiments, the circuit wiring portion 140 mainly includes a driving circuit of 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.

[0083] In some embodiments, continue to refer to Figure 2 , Figure 4 and Figure 7 As shown, the display device 100 includes a protection portion 150, and the protection portion 150 is arranged on a side of the light-emitting unit 110 away from the circuit wiring portion 140 along the second direction F2 to protect the light-emitting unit 110. Similarly, the protection portion 150 is arranged at the light-emitting unit 110, so that the protection portion 150 can avoid the light-emitting surface, and the protection portion 150 is prevented from blocking the light-emitting surface, thereby improving the protection effect of the light-emitting unit 110 while ensuring that the light-emitting surface of the light guide 120 has a larger area occupancy, which is conducive to obtaining better display effect and light transmission efficiency.

[0084] Optionally, the orthographic projection of the protection 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 protection part 150 completely avoids the light-emitting surface and the light-emitting efficiency of the light-emitting surface and the light-transmitting efficiency of the light guide 120 are not affected at all by the setting of the protection part 150.

[0085] Optionally, the protection part 150 includes a resin or a silicon-based inorganic compound so as to be able to protect the light emitting unit 110 .

[0086] It can be understood that the present application arranges the light-emitting unit 110 on the side of the light guide 120 to emit light, and arranges the circuit routing 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 transmission area and display area of ​​the light guide 120, improve the display effect, and reduce the screen window feeling.

[0087] In some embodiments, Figure 6As shown, the light emitting unit 110 is arranged to emit light on the side of the light guide 120. The light emitting unit 110 can be arranged to be arranged on the side of the longer side of the light guide 120, so that the light of the light emitting unit 110 incident on the light guide 120 is more uniform, and the light uniformity of the light guide 120 is improved. In some embodiments, the light emitting unit 110 includes an organic light emitting diode device or a light emitting diode device.

[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, and the substrate 210 and the cover plate 220 are spaced apart along the second direction F2. A display device 100 is provided between the substrate 210 and the cover plate 220, and a plurality of display devices 100 are arranged between the substrate 210 and the cover plate 220 on a plane where the substrate 210 is located. 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 include a first display element, a second display element and a third display element, and the light emitted by one of the first display element, the second display element and the third display element is red light, the light emitted by another one is blue light, and the light emitted by another one is green light, so as to realize color display of the display module 10 and improve 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 and high reflectance film layer, so as to improve the light transmittance and the light transmission effect of the display module 10, and at the same time, reflect the light to the light emitting surface for emission, thereby improving the light utilization rate and 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 and high refractive index film layer to improve the light transmission effect 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 conducive to collecting light in non-light-exiting directions and increasing light extraction efficiency.

[0091] The display module 10 provided in the present application converts the outgoing light emitted by 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-guiding member 120, thereby realizing the display function of the display module 10. The light-emitting unit 110 is arranged on one side of the light-guiding member 120 along the first direction F1 to realize side light emission, which relatively reduces the light-transmitting area occupied by the light-emitting unit 110, and is beneficial to improving the transmittance of the display module 10. The present application also provides a circuit wiring portion 140 disposed on one side of the light-emitting unit 110 along the second direction F2, and provides a protection portion 150 disposed on one side of the light-emitting unit 110 along the second direction F2, which can protect the light-emitting unit 110, and can prevent the circuit wiring portion 140 and the protection portion 150 from interfering with the light guide 120, so that the circuit wiring portion 140 and the protection portion 150 can both avoid the light-emitting surface, and prevent the circuit wiring portion 140 and the protection portion 150 from blocking the light-emitting surface, so that the light-emitting surface of the light guide 120 has a larger area ratio, which is conducive to obtaining better display effects and light transmission efficiency. The present application also provides a reflector to improve the utilization rate of light, and at the same time, the size of the reflector is set to increase the area ratio of the light guide 120, and improve the light transmittance and display effect of the display module 10.

[0092] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display module, characterized in that: The display module comprises: A plurality of display devices, each comprising a light emitting unit and a light guide, wherein 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 the light emitted by the light emitting unit and emit the light through the light emitting surface; The first direction and the second direction intersect each other.

2. The display module according to claim 1, characterized in that: The dimension of the light guide along the first direction is a, the dimension of the light emitting unit along the first direction is b, and a>b; Optionally, a dimension b of the light emitting unit along the first direction satisfies: b≤200 μm; Optionally, a dimension a of the light guide along the first direction and a dimension b of the light emitting unit along the first direction satisfy the relationship: a:b≥20.

3. The display module according to claim 1, characterized in that: The light guide comprises an optical waveguide material; Optionally, the optical waveguide material includes one or more of polymethacrylate, polycarbonate, polysiloxane and silicon nitride; Optionally, the light guide comprises an optical waveguide material and a fluorescent material; Optionally, the fluorescent material includes one or more of an organic fluorescent material, a rare earth fluorescent material and a semiconductor quantum dot.

4. The display module according to any one of claims 1 to 3, characterized in that: The display module also includes a plurality of reflective elements corresponding to the plurality of display devices; The reflective element is at least arranged on a side of the corresponding light guide element away from the corresponding light emitting unit along the first direction; Optionally, the reflector comprises two first reflective portions respectively arranged on opposite sides of the display device along the third direction, and a second reflective portion connected between the two first reflective portions; the second reflective portion is arranged on a side of the corresponding light guide member 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; Optionally, the reflective element is arranged around the corresponding display device around an axis parallel to the second direction; Optionally, the size of the first light reflecting portion along the third direction is L1, the size of the second light reflecting portion along the first direction is L2, the size L1 of the first light reflecting portion along the third direction satisfies: L1≤100 μm, and the size L2 of the second light reflecting portion along the first direction satisfies: L2≤100 μm; Optionally, the dimension of the light guide member along the first direction is a, and the dimension a of the light guide member along the first direction and the dimension L2 of the second light reflecting portion along the first direction satisfy the relationship: a: L2≥20; Optionally, a dimension of the light guide member along the third direction is c, and the dimension c of the light guide member along the third direction and a dimension L1 of the first light reflecting portion along the third direction satisfy the relationship: c: L1 ≥ 20.

5. The display module according to claim 4, characterized in that: The display device further comprises a circuit wiring portion, the circuit wiring portion is arranged on one side of the light emitting unit along the second direction, and the circuit wiring portion is electrically connected to the light emitting unit; Optionally, the circuit wiring portion is arranged on a side of the light emitting unit away from the light emitting surface along the second direction; Optionally, the orthographic projection of the circuit wiring portion in a 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; Optionally, a portion of the circuit wiring portion is arranged on one side of the light-emitting unit along the second direction, and another portion of the circuit wiring portion is arranged on one side of the reflective element along the second direction, and the orthographic projection of the circuit wiring portion in the reference plane is within the range of the orthographic projections of the light-emitting unit and the reflective element in the reference plane.

6. The display module according to claim 5, characterized in that: The display device comprises a protection portion, and the protection portion is arranged on a side of the light emitting unit away from the circuit wiring portion along the second direction; Optionally, the orthographic projection of the protection portion in the reference plane is located within the range of the orthographic projection of the light emitting unit in the reference plane; Optionally, the protection portion includes resin or a silicon-based inorganic compound.

7. The display module according to claim 1, characterized in that: The display module comprises a substrate and a cover plate, wherein the substrate and the cover plate are spaced apart along the second direction, and the display device is arranged between the substrate and the cover plate; A plurality of display device arrays are arranged between the substrate and the cover plate; Optionally, a first film layer is disposed on a side of the substrate facing the display device, and a second film layer is disposed on a side of the cover plate facing the display device; Optionally, the first film layer includes one or both of a silver film layer and an aluminum film layer; Optionally, the second film layer includes a high refractive index resin or a silicon-based inorganic compound.

8. The display module according to claim 1, characterized in that: The display module has a display area and a frame area arranged around the display area, and a plurality of display devices are arranged in the display area; The width of the border area is M, M is 2mm-4mm, and the width of the border area is the dimension of the border area in the direction from the display area to the border area.

9. The display module according to claim 1, characterized in that: The light emitting unit includes an organic light emitting diode device or a light emitting diode device; Optionally, the plurality of display devices include 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 another emits green light.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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