Light-emitting module and display device

Abstract

A light emitting module (100) includes a substrate (10), a plurality of light emitting devices (20), and a plurality of reflective patterns (30). The light-emitting device (20) is provided on the substrate (10). The reflection patterns (30) are arranged on the side, away from the substrate (10), of the light-emitting device (20), and gaps are formed between the adjacent reflection patterns (30). The reflection patterns (30) correspond to the light-emitting devices (20) in a one-to-one mode, and orthographic projections of the light-emitting devices (20) on the substrate (10) are located in orthographic projections of the reflection patterns (30) on the substrate (10). The reflection pattern (30) is provided with at least one through hole (31), and the orthographic projection of the through hole (31) on the substrate (10) is not overlapped with the orthographic projection of the light-emitting device (20) on the substrate (10).

Description

Light-emitting module and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a light-emitting module and a display device. Background Art

[0002] A display device typically has an image display function. For example, the display device may include a liquid crystal display panel and a backlight. The backlight is disposed behind the liquid crystal display panel to provide backlight. The luminous effect of the backlight directly affects the display effect of the display device.

[0003] Summary of the Invention

[0004] In one aspect, a light-emitting module is provided. The light-emitting module includes a substrate, multiple light-emitting devices, and multiple reflective patterns. The light-emitting devices are disposed on the substrate. The multiple reflective patterns are disposed on a side of the light-emitting devices away from the substrate, with spaces between adjacent reflective patterns. The reflective patterns correspond one-to-one with the light-emitting devices, and the orthographic projection of the light-emitting devices on the substrate lies within the orthographic projection of the reflective patterns on the substrate. The reflective patterns are provided with at least one through-hole, and the orthographic projection of the through-hole on the substrate does not overlap with the orthographic projection of the light-emitting devices on the substrate.

[0005] In some embodiments, the number of through-holes close to the center of the reflective pattern is smaller than the number of through-holes far from the center of the reflective pattern.

[0006] In some embodiments, the plurality of through-holes have the same size.

[0007] In some embodiments, a size of the through-hole close to the center of the reflective pattern is smaller than a size of the through-hole far from the center of the reflective pattern.

[0008] In some embodiments, a plurality of through holes having equal distances from the center of the reflective pattern are arranged in a circular array.

[0009] In some embodiments, the plurality of through holes are arranged in a staggered manner.

[0010] In some embodiments, a plurality of through holes are sequentially arranged along any radial direction of the reflective pattern.

[0011] In some embodiments, the plurality of through holes are symmetrically distributed.

[0012] In some embodiments, the projection shape of the through hole on the substrate is circular or polygonal, and the diameter of the through hole is 0.1 mm to 0.2 mm.

[0013] In some embodiments, the minimum distance between the through hole and the edge of the reflective pattern is 0.1 mm.

[0014] In some embodiments, the minimum distance between the through hole closest to the center of the reflective pattern and the center of the reflective pattern is 0.75 mm.

[0015] In some embodiments, a plurality of reflective patterns are arranged in an array, the plurality of reflective patterns include a first reflective pattern and a second reflective pattern, and the first reflective pattern and the second reflective pattern are arranged in sequence along a diagonal direction of the first reflective pattern.

[0016] On the first reflective pattern, the number of through holes in the diagonal direction of the first reflective pattern is greater than the number of through holes in the horizontal direction or the vertical direction; and / or, on the second reflective pattern, the number of through holes in the diagonal direction of the first reflective pattern is greater than the number of through holes in the horizontal direction or the vertical direction.

[0017] In some embodiments, the reflective pattern is circular or polygonal in shape.

[0018] In some embodiments, the reflective pattern has a thickness of 25 μm to 50 μm.

[0019] In some embodiments, a distance between a side of the reflective pattern close to the substrate and the light emitting device is 20 μm to 50 μm.

[0020] In some embodiments, the light emitting module further includes a bottom reflection layer, which is disposed on a side of the substrate close to the plurality of reflection patterns.

[0021] In some embodiments, the light emitting module further includes a protective layer, which is disposed on the plurality of light emitting devices, and the plurality of reflective patterns are disposed on the protective layer.

[0022] In some embodiments, the refractive index of the protection layer is greater than the refractive index of the reflective pattern.

[0023] In another aspect, a display device is provided, comprising: a light-emitting module as described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present disclosure.

[0025] FIG1A is a partial top view of a light-emitting panel provided in the related art;

[0026] FIG1B is a cross-sectional view taken along line A1-A2 in FIG1A;

[0027] FIG1C is a schematic diagram of light emission of a light emitting panel provided in the related art;

[0028] FIG2A is a partial top view of another light-emitting panel provided in the related art;

[0029] FIG2B is a cross-sectional view taken along line B1-B2 in FIG2A;

[0030] FIG2C is a schematic diagram of light emission of another light emitting panel provided in the related art;

[0031] FIG3 is a structural diagram of a display device provided by an embodiment of the present disclosure;

[0032] FIG4 is a structural diagram of another display device provided by an embodiment of the present disclosure;

[0033] FIG5 is a structural diagram of a light-emitting module provided in an embodiment of the present disclosure;

[0034] FIG6 is a cross-sectional view taken along line C1-C2 in FIG5;

[0035] FIG7 is a structural diagram of a reflection pattern provided by an embodiment of the present disclosure;

[0036] FIG8 is a schematic diagram of light emission from a light-emitting area of ​​a light-emitting module provided in an embodiment of the present disclosure;

[0037] FIG9A is a structural diagram of another reflective pattern provided by an embodiment of the present disclosure;

[0038] FIG9B is a cross-sectional view taken along line D1-D2 in FIG9A;

[0039] FIG10 is a structural diagram of another reflective pattern provided by an embodiment of the present disclosure;

[0040] FIG11 is a structural diagram of another reflective pattern provided by an embodiment of the present disclosure;

[0041] FIG12 is a structural diagram of another reflective pattern provided by an embodiment of the present disclosure;

[0042] FIG13 is a structural diagram of another reflective pattern provided by an embodiment of the present disclosure;

[0043] FIG14 is a partial enlarged view of the light emitting module corresponding to point E in FIG8 ;

[0044] FIG15 is a structural diagram of another reflection pattern provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0046] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0048] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0049] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0050] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0051] As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [stated condition or event] is detected" are optionally interpreted to mean "upon determining" or "in response to determining" or "upon detecting [stated condition or event]" or "in response to detecting [stated condition or event]," depending on the context.

[0052] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0053] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0054] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0055] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0056] It will be understood that when a layer or element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present therebetween.

[0057] Exemplary embodiments are described herein with reference to cross-sectional and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are contemplated. Therefore, the exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include deviations in shape due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0058] With the advancement of liquid crystal display technology, backlight sources increasingly use light-emitting devices, such as light-emitting panels using micro light-emitting diodes (Mini LEDs) as light sources.

[0059] Figure 1A is a partial top view of a light-emitting panel provided in the related art. Figure 1B is a cross-sectional view taken along line A1-A2 in Figure 1A. Figure 1C is a schematic diagram of light emission of a light-emitting panel provided in the related art.

[0060] Referring to Figures 1A to 1C , a light-emitting panel includes a substrate 10A and a plurality of light-emitting devices 20A. The light-emitting devices 20A are arranged in an array on the substrate 10A, with a pitch between adjacent light-emitting devices 20A. For the convenience of the following description, the area on the light-emitting panel illuminated by the light-emitting devices 20A is referred to as a bright area L, and the area on the panel not illuminated by the light-emitting devices 20A is referred to as a dark area D. When the light-emitting devices 20A emit light, the vertical light emitted is emitted from the light-emitting side of the light-emitting devices 20A and exits the light-emitting panel, making the area on the panel directly facing the light-emitting side of the light-emitting devices 20A the bright area L. In addition to the area directly facing the light-emitting side of the light-emitting devices 20A, light is also emitted from the area directly facing the light-emitting side of the light-emitting devices 20A (this portion of light is non-vertical light emitted from the light-emitting side of the light-emitting devices 20A), making the area on the panel directly facing the light-emitting side of the light-emitting devices 20A also become the bright area L. Referring to Figures 1B and 1C, the further away the area between adjacent light-emitting devices 20A is from the light-emitting device 20A, the less light is emitted, causing the brightness between the light-emitting devices 20A to gradually decrease until it becomes a dark area D of the light-emitting panel, forming a lamp shadow. When the brightness of the light emitted by the light-emitting device 20A is constant, since the area of ​​the light-emitting panel illuminated by the light-emitting device 20A is limited, as the interval between the light-emitting devices 20A increases, the range (e.g., area) of the dark area D between the light-emitting devices 20A increases, the lamp shadow problem of the light-emitting panel becomes more serious, resulting in worse brightness uniformity of the light-emitting panel. In order to solve the above problem, the conventional approach is to reduce the interval between the light-emitting devices 20A, thereby reducing the range of the dark area D, thereby improving the brightness uniformity of the light-emitting panel. However, this approach will increase the number of light-emitting devices 20A and increase the production cost of the light-emitting panel.

[0061] Figure 2A is a partial top view of another light-emitting panel provided in the related art. Figure 2B is a cross-sectional view taken along line B1-B2 in Figure 2A. Figure 2C is a light-emitting schematic diagram of another light-emitting panel provided in the related art.

[0062] To reduce the extent of the dark area D, a reflective pattern 30B is added. Referring to Figures 2A to 2C , the light-emitting panel includes a substrate 10B, a plurality of light-emitting devices 20B, a reflective pattern 30B, and a bottom reflective layer 40B disposed on the substrate 10B. Spacers are provided between the light-emitting devices 20B. The reflective pattern 30B is disposed on the light-emitting devices 20B (on the side of the light-emitting devices 20B facing away from the substrate 10B), covering the light-emitting devices 20B. Spacers are also provided between the reflective patterns 30B, but the spacing between the reflective patterns 30B is smaller than the spacing between the light-emitting devices 20B. When the light-emitting device 20B emits light, the large-angle light emitted from the light-emitting side of the light-emitting device 20B hits the lower surface of the reflective pattern 30B (the side of the reflective pattern 30B close to the substrate 10B). The light is repeatedly reflected between the reflective pattern 30B and the bottom reflective layer 40B, reaches the gap between the reflective patterns 30B, and is emitted from the gap between the reflective patterns 30B outside the light-emitting panel, so that the area corresponding to the gap between the reflective patterns 30B becomes the bright area L. In other words, a portion of the area corresponding to the gap between the light-emitting devices 20B becomes the bright area, and the dark area D between the light-emitting devices 20B is reduced. The light-emitting side of the light-emitting device 20B emits more vertical light, and a portion of this light can directly pass through the reflective pattern 30B, so that light is emitted from the area on the reflective pattern 30B directly facing the light-emitting side of the light-emitting device 20B, and the area directly facing the light-emitting side of the light-emitting device 20B becomes the bright area L. Light emitted by light-emitting devices 20B at smaller angles is insufficient to pass through reflective pattern 30B. Instead, it repeatedly reflects between reflective pattern 30B and bottom reflective layer 40B, reaching the spaces between reflective patterns 30B and emitting outside the light-emitting panel from the spaces between reflective patterns 30B. This increases the amount of light emitted from the spaces between reflective patterns 30B, increasing the brightness of the bright areas L corresponding to the spaces between reflective patterns 30B. However, since there are no areas on reflective pattern 30B directly facing the light-emitting side of light-emitting devices 20B, light emitted by light-emitting devices 20B cannot directly pass through these areas and must instead be reflected there. Consequently, no light is emitted from the areas on reflective pattern 30B not directly facing the light-emitting side of light-emitting devices 20B, resulting in dark areas D. Compared to the structure of the light-emitting panel shown in FIG1A , in the light-emitting panel shown in FIG2A , although a portion of the areas corresponding to the spaces between light-emitting devices become bright areas L, a portion of the areas directly facing reflective patterns 30B remain dark areas D. This problem of poor light shadows persists, and the brightness uniformity of the light-emitting panel remains poor.

[0063] In order to solve the above problems, an embodiment of the present disclosure provides a display device 1000. The display device 1000 is an electronic device having an image (including: static images or dynamic images, wherein the dynamic image can be a video) display function. For example, the display device can be any one of a display, a television, a billboard, a digital photo frame, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a digital camera, a portable camcorder, a viewfinder, a navigator, a large-area wall, a home appliance, an information query device (such as business query equipment for e-government, banks, hospitals, power departments, etc.), a monitor, an electronic screen, a virtual reality (VR) display device, an augmented reality (AR) display device, and an in-vehicle display, but is not limited thereto.

[0064] FIG3 is a structural diagram of a display device provided by an embodiment of the present disclosure.

[0065] In some embodiments, referring to FIG. 3 , a display device 1000 may include a display panel 200A, which may be, for example, a self-luminous display panel. The display panel 200A has a display area AA and a peripheral area SA. The display area AA is the area of ​​the display panel 200A used to display an image, and the peripheral area SA is the area of ​​the display panel 200A excluding the display area AA. The peripheral area SA may be located on at least one side (e.g., one side or multiple sides) of the display area AA. For example, the peripheral area SA may be arranged around the display area AA.

[0066] The display panel 200A may be a micro-light-emitting diode (Mini LED or Micro LED) display panel. The display panel 200A may include a light-emitting module 100. The light-emitting module 100 has a light-emitting area and a non-light-emitting area. The light-emitting area is the area of ​​the light-emitting module 100 defined by the display area AA of the display panel 200A. The light-emitting area of ​​the light-emitting module 100 and the display area AA of the display panel 200A have the same shape and size. The non-light-emitting area is the area of ​​the light-emitting module 100 other than the light-emitting area.

[0067] The display device 1000 may further include at least one (e.g., one or more) of a frame and a circuit board 300. The circuit board 300 may be a flexible printed circuit (FPC) or a printed circuit board (PCB). The circuit board 300 may be coupled to the display panel 200A and configured to transmit electrical signals to the display panel 200A. Furthermore, both the display panel 200A and the circuit board 300 may be mounted within the space enclosed by the frame.

[0068] FIG4 is a structural diagram of another display device provided by an embodiment of the present disclosure.

[0069] In some further embodiments, referring to FIG4 , the display device 1000 may include a display panel 200B and a light-emitting module 100. The display panel 200B may be a liquid crystal display panel. The display panel 200B has a display area AA and a peripheral area SA. The light-emitting module 100 is disposed on the back of the display panel 200B and is configured to provide backlight to the display panel 200B. The light-emitting module 100 has a light-emitting area and a non-light-emitting area. The light-emitting area is an area of ​​the light-emitting module 100 defined by the display area AA of the display panel 200B; wherein the light-emitting area of ​​the light-emitting module 100 and the display area AA of the display panel 200B are the same in shape and size. The non-light-emitting area is an area of ​​the light-emitting module 100 other than the light-emitting area.

[0070] The display device 1000 may further include at least one of a frame and a circuit board 300 , etc. For the specific structure, reference may be made to the description of the display device 1000 shown in FIG3 , and will not be repeated here.

[0071] For ease of description below, an XYZ coordinate system is established. The first direction X and the second direction Y are both parallel to and intersect the plane on which the light-emitting module 100 is located. For example, the first direction X and the second direction Y are perpendicular to each other. The third direction Z is the thickness direction of the light-emitting module 100 and is perpendicular to the XY plane.

[0072] Fig. 5 is a structural diagram of a light emitting module provided by an embodiment of the present disclosure. Fig. 6 is a cross-sectional view taken along line C1-C2 in Fig. 5 .

[0073] Referring to FIG5 , the light-emitting module 100 includes a light-emitting area AA. The light-emitting module 100 may also include a non-light-emitting area SA. The non-light-emitting area SA may be located on at least one side (e.g., one side, or all four sides, i.e., including both upper and lower sides and both left and right sides) of the light-emitting area AA. The light-emitting module 100 includes a substrate 10, a plurality of light-emitting devices 20, and a plurality of reflective patterns 30.

[0074] The substrate 10 includes a base substrate. The base substrate supports other structures in the light-emitting module 100. The base substrate can be set according to actual needs. For example, the base substrate can be a rigid substrate. The material of the rigid substrate can be glass or polymethyl methacrylate (PMMA). The base substrate can also be a flexible substrate. The material of the flexible substrate can be polyethylene terephthalate (PET), polyethylene naphthalate diformic acid glycol ester (PEN), ultra-thin glass or polyimide (PI).

[0075] The substrate 10 may further include a circuit layer disposed on the base substrate. The circuit layer is configured to provide an electrical signal to each light emitting device 20 and is coupled to the plurality of light emitting devices 20 so that the light emitting devices 20 emit light of corresponding brightness.

[0076] For example, referring to FIG6 , the substrate 10 includes a first insulating layer 11, a circuit layer 12, and a second insulating layer 13 stacked in sequence. The first insulating layer 11 and the second insulating layer 13 are used to isolate the circuit layer 12 to prevent short circuits and interference. The material of the first insulating layer 11 and the second insulating layer 13 can be a combination of one or more materials such as glass, PMMA, PET, PEN, or PI. The materials of the first insulating layer 11 and the second insulating layer 13 can be the same or different, and this is not limited in the present embodiment. The circuit layer 12 is used to provide the conductive path required by the circuit board 300. The material of the circuit layer 12 can be a conductive material, such as copper foil. The circuit layer 12 is disposed between the first insulating layer 11 and the second insulating layer 13. The second insulating layer 13 has a first opening that extends through the second insulating layer 13, exposing a portion of the circuit layer 12. The light-emitting device 20 is connected to the circuit layer 12 through the first opening. For example, the pins of the light-emitting device 20 are directly connected to the circuit layer 12. For another example, solder S is provided on the circuit layer 12, and the pins of the light-emitting device 20 are connected to the circuit layer 12 through the solder S. The circuit layer 12 can be connected to the circuit board 300 , thereby achieving connection between the light-emitting module 100 and the circuit board 300 .

[0077] The light-emitting device 20 is an electronic device capable of emitting light. Multiple (e.g., one or more) light-emitting devices 20 are disposed on the substrate 10 and located in the light-emitting area AA. The light-emitting device 20 may be an inorganic light-emitting diode (LED), such as a Mini LED device or a Micro LED device. The embodiments of the present disclosure do not limit the light-emitting device 20; that is, the light-emitting device 20 may be any other type of light-emitting device.

[0078] Although a limited number of light-emitting devices 20 are shown in FIG5 , the number of light-emitting devices 20 in the embodiments of the present disclosure is not limited. Spaces are provided between the light-emitting devices 20. In some embodiments, the light-emitting devices 20 may be arranged in an array, for example, in N rows and M columns; where N is an integer greater than 0, and M is an integer greater than 0. For example, N ≥ 2, and M ≥ 2. In other embodiments, the plurality of light-emitting devices 20 may be arranged in any other manner, for example, in a desired display pattern, and is not limited to a matrix arrangement.

[0079] Figure 7 is a structural diagram of a reflective pattern provided by an embodiment of the present disclosure. Figure 8 is a schematic diagram of light emission from a light emitting area of ​​a light emitting module provided by an embodiment of the present disclosure.

[0080] Continuing with FIG6 , the reflective pattern 30 is disposed on a side of the light-emitting device 20 away from the substrate 10, wherein the upper surface of the reflective pattern 30 is the surface of the reflective pattern 30 away from the substrate 10, and the lower surface of the reflective pattern 30 is the surface of the reflective pattern 30 close to the substrate 10. The reflective patterns 30 correspond one-to-one with the light-emitting devices 20, with one light-emitting device 20 corresponding to one reflective pattern 30. The arrangement of the multiple reflective patterns 30 is the same as the arrangement of the multiple light-emitting devices 20. For example, the multiple light-emitting devices 20 are arranged in a rectangular array, and the multiple reflective patterns are also arranged in a rectangular array. The upper surface of the reflective pattern 30 and the lower surface of the reflective pattern 30 can be parallel to each other, that is, the reflective pattern has the same thickness everywhere. For example, the upper surface of the reflective pattern 30 is a plane, and the lower surface of the reflective pattern 30 is also a plane; for another example, the upper surface of the reflective pattern 30 is a curved surface, and the lower surface of the reflective pattern 30 is a curved surface parallel to the curved surface. The orthographic projection of the reflective pattern 30 on the substrate 10 overlaps the orthographic projection of the light-emitting device 20 on the substrate 10. In other words, the orthographic projection of the light-emitting device 20 on the substrate 10 lies within the outline of the orthographic projection of the reflective pattern 30 on the substrate. Specifically, referring to FIG7 , the reflective pattern 30 includes a first sub-pattern P1 and a second sub-pattern P2. The orthographic projection of the first sub-pattern P1 on the substrate 10 coincides with the orthographic projection of the light-emitting device 20 on the substrate 10. The first sub-pattern P1 represents the area corresponding to the orthographic projection of the light-emitting device 20 on the reflective pattern 30, with the edge of the first sub-pattern P1 facing the edge of the light-emitting device 20. The orthographic projection of the second sub-pattern P2 on the substrate 10 does not overlap with the orthographic projection of the light-emitting device 20 on the substrate 10. This allows light directly emitted from the light-emitting device 20 perpendicular to the lower surface of the first sub-pattern P1 to pass directly through the first sub-pattern P1 and exit the light-emitting module 100. Light directly emitted from the light-emitting device 20 in other directions will be reflected multiple times on the lower surface of the reflective pattern 30. The area corresponding to each first sub-pattern P1 on the light-emitting module 100 becomes a bright area L.

[0081] There are gaps between adjacent reflective patterns 30. It is understood that there are spaces between the second sub-patterns P2 of adjacent reflective patterns 30. There are also gaps between the light-emitting devices 20. Because the projections of the reflective patterns 30 overlap the projections of the light-emitting devices 20, the reflective patterns 30 can partially cover the gaps between the light-emitting devices 20. Therefore, the gaps between the reflective patterns 30 are smaller than the gaps between the light-emitting devices 20.

[0082] The reflective pattern 30 is provided with at least one (e.g., one, or multiple) through-holes 31. Specifically, the through-holes 31 extend through the upper and lower surfaces of the reflective pattern 30. The orthographic projection of the through-holes 31 on the substrate 10 does not overlap with the orthographic projection of the light-emitting device 20 on the substrate 10. Specifically, the through-holes 31 are provided in the second sub-pattern P2 of the reflective pattern 30. Some light emitted by the light-emitting device 20 is reflected by the reflective pattern 30 and ultimately illuminates the lower surface of the second sub-pattern P2. Part of these light rays directly enter the through-hole 31 and are emitted from the through-hole 31 out of the light-emitting module 100. In this way, light is emitted from the area corresponding to the second sub-pattern P2 of the reflective pattern 30 to form a bright area L, so that the area on the light-emitting module 100 that was originally a dark area D becomes the bright area L, thereby reducing the range of the dark area D on the light-emitting module 100. Another part of the light rays does not enter the through-hole 31, but is reflected by the lower surface of the second sub-pattern P2 to the gap between adjacent reflective patterns 30, and is emitted from the light-emitting module 100 through the gap between the reflective patterns 30. The area corresponding to the gap between the reflective patterns 30 becomes the bright area L, that is, a part of the area corresponding to the gap between the light-emitting devices 20 becomes the bright area L, and the range of the dark area D in the area corresponding to the light-emitting devices 20 on the light-emitting module 100 is reduced. Light is emitted from the areas corresponding to the reflective pattern 30 on the light-emitting module 100 (the areas corresponding to the first sub-pattern P1 and the second sub-pattern P2), and light is also emitted from the intervals between the light-emitting devices 20, so that the range of the dark area D on the light-emitting module 100 is reduced, the brightness uniformity of the light-emitting module 100 is improved, and the display effect of the display device is improved.

[0083] As the spacing between the light-emitting devices 20 increases, if the size of the reflective pattern 30 remains unchanged, light will still be emitted from the areas of the spacing between the light-emitting devices 20 close to the reflective pattern 30. However, the distance from the areas farther from the reflective pattern 30 will be greater, causing the areas farther from the reflective pattern 30 within the spacing between the light-emitting devices 20 to become dark areas D again. Therefore, the larger the spacing between the light-emitting devices 20, the larger the size of the reflective pattern 30. Specifically, the larger the size of the second sub-pattern P2. For example, referring to Figure 6, the larger the spacing between the light-emitting devices 20, the larger the distance from the edge of the first sub-pattern P1 to the outer edge of the second sub-pattern P2. In other words, the distance n1 from the edge of the light-emitting device 20 to the outer edge of the second sub-pattern P2 increases. A portion of the light emitted by the light-emitting devices 20 is reflected by the second sub-pattern P2 and emitted from the spacing between the reflective pattern 30; another portion of the light is emitted through the through-hole 31 of the second sub-pattern P2. In this way, light is always emitted from the area where the intervals between the light emitting devices 20 are close to the second sub-pattern P2 and the area away from the second sub-pattern P2, and the area corresponding to the reduced intervals between the light emitting devices 20 becomes a dark area D.

[0084] The reflective pattern 30 can be formed by screen printing technology, or by thin film deposition processes such as chemical vapor deposition (CVD), physical vapor deposition (PVD) or atomic layer deposition (ALD). The reflective pattern 30 can be made of a material with low transmittance and high reflectivity. The reflectivity of the reflective pattern 30 is 85% to 93%, for example, 85%, 88%, 90%, 93%, etc. The material of the reflective pattern 30 can be white ink or white silicone. If the reflectivity is too high, the light emitted by the light-emitting device 20 is almost completely reflected at the lower surface of the reflective pattern 30, resulting in no light passing through the orthographic projection area (first sub-pattern P1) of the light-emitting device 20 on the reflective pattern, so that almost no light is emitted from the area directly opposite the first sub-pattern P1 on the light-emitting module 100, forming a dark area D. If the reflectivity is too low, light emitted by the light-emitting devices 20 will have difficulty emitting from the area between adjacent light-emitting devices 20 after multiple reflections on the lower surface of the reflective pattern 30. This will cause the areas corresponding to the intervals between the light-emitting devices 20 on the light-emitting module 100 to become dark areas D, which is not conducive to improving the brightness uniformity of the light-emitting module 100. The reflective pattern 30 and the corresponding light-emitting device 20 can be coaxially arranged. Specifically, the line connecting the geometric center of the reflective pattern 30 and the geometric center of the light-emitting device 20 is perpendicular to the plane of the substrate 10.

[0085] The orthographic projection of the reflective pattern 30 on the substrate 10 may be circular or polygonal. The shape of the reflective pattern 30 may be similar to the shape of the orthographic projection of the light-emitting device 20 on the substrate 10. For example, if the orthographic projection of the light-emitting device 20 on the substrate 10 is a rectangle, the reflective pattern 30 is also a rectangle. In this case, the long side of the orthographic projection of the reflective pattern 30 on the substrate 10 is parallel to the long side of the orthographic projection of the light-emitting device 20 on the substrate 10, and the short side of the orthographic projection of the reflective pattern 30 on the substrate 10 is parallel to the short side of the orthographic projection of the light-emitting device 20 on the substrate 10. The diagonal of the orthographic projection of the reflective pattern 30 on the substrate 10 may coincide with the diagonal of the orthographic projection of the light-emitting device 20 on the substrate 10.

[0086] In other implementations, the shape of the orthographic projection of the reflective pattern 30 on the substrate 10 may be different from the shape of the orthographic projection of the light-emitting device 20 on the substrate 10. For example, the orthographic projection of the light-emitting device 20 on the substrate 10 may be circular, and the orthographic projection of the reflective pattern 30 on the substrate 10 may be polygonal.

[0087] In the embodiment of the present disclosure, a portion of the light emitted by the light emitting device 20 is emitted through the through hole 31 of the reflective pattern 30, and the reflective pattern 30 plays a role in uniform light distribution. Therefore, when the display area is the same, the light emitting module 100 of the embodiment of the present disclosure can reduce the number of light emitting devices 20, saving costs.

[0088] To achieve display functionality, conventional display devices include a light-emitting module and an optical film assembly comprised of at least a diffuser, a prism, and a light-uniform film. The light-emitting module provides light, while the diffuser in the optical film assembly provides uniform light distribution. In some examples, when the light-emitting device in the light-emitting module emits monochromatic light (e.g., blue light), a color conversion film (e.g., a quantum dot film or a phosphor film) is also included to convert the monochromatic light into a multi-color light.

[0089] In the light-emitting module 100 of the disclosed embodiment, the reflective pattern 30 serves to even out light, enabling the light-emitting module 100, prism sheet, and light-homogenizing film or color-conversion film in the display device 1000 to achieve a display function. The laminated structure composed of the prism sheet, light-homogenizing film, and color-conversion film is in direct contact with the reflective pattern 30 of the light-emitting module 100. Eliminating the need for a diffuser reduces the thickness of the laminated structure, thereby reducing the thickness of the display device. This is particularly beneficial for achieving a thinner and lighter display device 1000 of a small or medium size (e.g., under 20 inches).

[0090] In some embodiments, the light-emitting module further includes a bottom reflective layer 40. The bottom reflective layer 40 is disposed on a side of the substrate 10 close to the plurality of reflective patterns 30. Specifically, the bottom reflective layer 40 is located below the reflective patterns 30. For example, referring to FIG6 , the bottom reflective layer 40 includes a plurality of second openings 41, wherein a certain distance exists between the projection of the second openings 41 on the substrate 10 and the projection of the light-emitting device 20 on the substrate 10. When forming the light-emitting module 100, an initial bottom reflective layer is first formed, and second openings 41 are etched on the initial bottom reflective layer to expose a portion of the substrate 10. The light-emitting device 20 is disposed in the second openings 41, and the light-emitting device 20 is connected to the substrate 10. In some examples, the projection of the through hole 31 on the substrate 10 does not overlap with the second opening 41, that is, the projection of the solid portion of the reflective pattern 30 on the substrate 10 covers the second opening 41. In this way, the light emitted from the edge of the light-emitting device 20 will not be directly emitted from the through hole 31, causing the brightness of the portion of the second sub-pattern P2 close to the first sub-pattern P1 to be too high, and there is a clear boundary between the brightness of the portion of the second sub-pattern P2 close to the outer edge and away from the first sub-pattern P1, which is beneficial to maintaining the brightness uniformity of the light-emitting module 100.

[0091] As another example, there is no gap between the projection of the bottom reflective layer 40 on the substrate 10 and the projection of the light-emitting device 20 on the substrate 10. When forming the light-emitting module 100, a plurality of light-emitting devices 20 are first arranged on the substrate 10, connected to the substrate 10, and then the bottom reflective layer 40 is formed between the light-emitting devices 20. In the embodiment of the present disclosure, the bottom reflective layer 40 is arranged below the reflective pattern 30. Non-vertical light emitted from the light-emitting device 20 is emitted to the lower surface of the reflective pattern 30. A portion of the light is emitted directly from the through-hole 31, and another portion of the light is reflected by the reflective pattern 30 and irradiated onto the bottom reflective layer 40. It is then reflected on the bottom reflective layer 40, so that the light is repeatedly reflected between the reflective pattern 30 and the bottom reflective layer 40 until it is emitted from the through-hole 31 or the gap between the reflective patterns 30 to the outside of the light-emitting module 100. Repeated reflection can increase the optical path length of light emitted by the light-emitting device 20 and increase the amount of light emitted from the through-holes 31 or the intervals between the reflective patterns 30. This improves the brightness of the through-holes 31 and the intervals between the reflective patterns 30 in the light-emitting module 100, thereby increasing the brightness uniformity of the light-emitting module 100 and enhancing the display effect. In some embodiments, referring again to FIG6 , the light-emitting module 100 further includes a protective layer 50. The protective layer 50 is disposed on the plurality of light-emitting devices 20, covering the light-emitting devices 20 and preventing water and oxygen from corroding the light-emitting devices 20, thereby extending the lifespan of the light-emitting module 100. The plurality of reflective patterns 30 are disposed on the protective layer 50, with a light mixing distance between the light-emitting devices 20 and the reflective patterns 30. Light emitted by the light-emitting devices 20 is thoroughly mixed within the protective layer 50, achieving a uniform light distribution. The thicker the protective layer 50, the greater the light mixing distance, the more thoroughly mixed the light emitted by the light-emitting devices 20, the more uniform the light emission between the intervals between the light-emitting devices 20, and the more uniform the brightness of the areas corresponding to the intervals between the light-emitting devices 20. In this case, if the reflective pattern 30 is larger, the area of ​​the light-emitting devices 20 that is covered will be larger. The area of ​​the light-emitting devices 20 that is covered will need to pass through the reflective pattern 30 before being emitted from the light-emitting module 100, resulting in uneven brightness between the light-emitting devices 20. Therefore, to improve the brightness uniformity between the light-emitting devices 20, the thicker the protective layer 50, the smaller the size of the reflective pattern 30.

[0092] The top surface of the protective layer 50 (the side of the protective layer 50 facing away from the substrate 10) can be flat, curved, or otherwise uneven. The bottom surface of the reflective pattern 30 is aligned with the corresponding area on the top surface of the protective layer 50. In other words, the bottom surface of the reflective pattern 30 matches the shape of the corresponding area on the top surface of the protective layer 50. Exemplarily, if the corresponding area on the top surface of the protective layer 50 is flat, the bottom surface of the reflective pattern 30 is also flat. In another exemplary embodiment, if the corresponding area on the top surface of the protective layer 50 is curved, the bottom surface of the reflective pattern 30 is aligned with the curved area.

[0093] To improve light transmittance, protective layer 50 is made of a transparent material, such as one or a combination of SiOx, SiNx, SiOxNy, AlN, or other suitable materials. Light emitted from light-emitting device 20 passes through transparent protective layer 50, where it is thoroughly mixed before entering the lower surface of reflective pattern 30 and exiting light-emitting module 100.

[0094] In some embodiments, the refractive index of the protective layer 50 is greater than the refractive index of the reflective pattern 30. The light emitted by the light emitting device 20 is emitted toward the reflective pattern 30 through the protective layer 50. The light enters the reflective pattern 30 with a lower refractive index from the protective layer 50 with a higher refractive index. When the incident angle of the incident reflective pattern 30 is greater than the critical angle, total reflection occurs. In this way, large-angle light (light with an incident angle greater than the critical angle for total reflection) is totally reflected at the interface between the protective layer 50 and the reflective pattern 30. The large-angle light is repeatedly reflected between the reflective pattern 30 and the bottom reflective layer 40 and is emitted from the through hole 31 or the gap of the reflective pattern 30 to the outside of the light emitting module 100, reducing the number of large-angle light emitted from the area directly opposite to the light emitting device 20, thereby reducing the difference between the luminous brightness of the first sub-pattern P1 and the second sub-pattern P2, thereby improving the brightness uniformity of the light emitting module 100 and enhancing the display effect.

[0095] In some embodiments, the thickness of the reflective pattern 30 is a first height h1, which is 25 μm to 50 μm, for example, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. The thickness of the reflective pattern 30 cannot be too high, otherwise the transmittance of light emitted by the light-emitting device 20 through the reflective pattern 30 will be reduced, and the light emitted from the area of ​​the reflective pattern 30 directly opposite the light-emitting device 20 will be reduced, resulting in an increase in the brightness difference of the reflective pattern 30. The thickness of the reflective pattern 30 cannot be too low, otherwise the light emitted by the light-emitting device 20 will directly pass through the reflective pattern 30, and the reflective pattern 30 will not have a reflective effect, resulting in the interval area of ​​the reflective pattern 30 remaining as a dark area D.

[0096] In some embodiments, the distance between the lower surface of the reflective pattern 30 and the light-emitting device 20 is a second height h2, and the second height h2 is 20 μm to 50 μm, for example, 20 μm, 25 μm, 30 μm, 40 μm, 50 μm, etc. The light emitted by the light-emitting device 20 is fully mixed within the range of the second height h2, achieving the effect of uniform light.

[0097] Fig. 9A is a structural diagram of another reflective pattern provided by an embodiment of the present disclosure. Fig. 9B is a cross-sectional view taken along line D1-D2 in Fig. 9A.

[0098] In some embodiments, referring to Figures 9A and 9B, the second sub-pattern P2 is provided with multiple circles of emission areas, each of which is provided with at least one through-hole (e.g., one or more) 31. Each circle of emission areas is at the same distance from the center of the reflective pattern 30. That is, on the second sub-pattern P2, at least one through-hole 31 is provided in areas with different distances from the center O of the reflective pattern 30. The geometric center of the reflective pattern 30 is located within the area where the first sub-pattern P1 is located. For example, the geometric center of the reflective pattern 30 can be coaxial with the geometric center of the light-emitting device 20. Exemplarily, the multiple through-holes 31 include a first through-hole 311 and a second through-hole 312. The multiple circles of emission areas include a first emission area Q1 and a second emission area Q2. The first through-hole 311 is located in the first emission area Q1, and the second through-hole 312 is located in the second emission area Q2. The first through-hole 311 is closer to the center O of the reflective pattern 30 than the second through-hole 312. Light emitted by the light-emitting device 20 exits the light-emitting module 100 through the first through-hole 311 and the second through-hole 312. That is, from the center O to the edge of the reflective pattern 30, light can be sequentially emitted from the first and second emission areas Q1, Q2 of the second sub-pattern P2. Light is emitted from each ring of emission areas, improving the brightness uniformity of the second sub-pattern P2. Furthermore, the amount of light emitted from the second sub-pattern P2 increases, thereby increasing the brightness of the area of ​​the light-emitting module 100 corresponding to the second sub-pattern P2. This reduces the brightness difference between the second sub-pattern P2 and the reflective pattern 30, further improving the brightness uniformity of the light-emitting module 100, and thus enhancing the display quality of the display device.

[0099] In some embodiments, referring to FIG. 9A , the multiple through holes 31 have the same size, and the multiple through holes 31 can be formed simultaneously without adjusting the etching size during the manufacturing process, which is beneficial to simplifying the manufacturing process and improving manufacturing efficiency.

[0100] FIG10 is a structural diagram of another reflection pattern provided by an embodiment of the present disclosure.

[0101] In some embodiments, the number of through-holes 31 near the center O of the reflective pattern 30 is smaller than the number of through-holes 31 farther from the center O of the reflective pattern 30. Specifically, the number of through-holes 31 in the emission area near the center O of the reflective pattern 30 is smaller than the number of through-holes 31 in the emission area near the center O of the reflective pattern 30. For example, referring to FIG. 10 , the density of through-holes 31 decreases as the light is closer to the center O of the reflective pattern 30, while the number of through-holes 31 increases as the light is farther from the center O of the reflective pattern 30. Typically, the light emission angle of a light-emitting device 20 is within 120°, and most of the light is concentrated within a very small solid angle. The closer to the center of the light-emitting device 20, the denser the light, the higher the brightness. The farther away from the center of the light-emitting device 20, the sparser the light, and the lower the brightness. Thus, the closer to the center O of the reflective pattern 30, the more light-emitting devices 20 emit light toward the reflective pattern 30; the farther away from the center O of the reflective pattern 30, the fewer light-emitting devices 20 emit light toward the reflective pattern 30. If the reflective pattern 30 is not provided with through-holes 31, the closer to the center O of the reflective pattern 30, the more light will pass through the reflective pattern 30, and the brightness of the corresponding area will be higher, resulting in poor brightness uniformity of the light emitted from the area containing the same reflective pattern 30. Since the number of through-holes 31 increases the further away from the center O of the reflective pattern 30, the further away from the center O of the reflective pattern 30, the more light will be emitted from the light-emitting module 100 through the through-holes 31, and the area corresponding to the reflective pattern 30 will be brighter. This redistributes the light emitted by the light-emitting device 20, making the emitted luminous flux uniform across the same reflective pattern 30, improving the brightness uniformity of the same reflective pattern 30, and further improving the uniformity of the light emitted from the light-emitting module 100, thereby forming a highly uniform planar light source.

[0102] FIG11 is a structural diagram of another reflection pattern provided by an embodiment of the present disclosure.

[0103] In some embodiments, referring to FIG. 11 , the size of the through-holes 31 near the center of the reflective pattern 30 is smaller than the size of the through-holes 31 farther from the center of the reflective pattern 30. Specifically, the size of the through-holes 31 in the emission area near the center O of the reflective pattern 30 is smaller than the size of the through-holes 31 in the emission area near the center O of the reflective pattern 30. For example, referring to FIG. 11 , the closer to the center O of the reflective pattern 30, the smaller the size of the through-holes 31; the farther away from the center O of the reflective pattern 30, the larger the size of the through-holes 31. Because the closer to the center O of the light-emitting device 20, the denser the light, the higher the brightness; the farther away from the center O of the light-emitting device 20, the sparser the light, the lower the brightness. Therefore, the closer to the center O of the reflective pattern 30, the more light-emitting devices 20 emit light toward the reflective pattern 30; the farther away from the center O of the reflective pattern 30, the fewer light-emitting devices 20 emit light toward the reflective pattern 30. Thus, the closer to the center O of the reflective pattern 30, the more light-emitting devices 20 emit light toward the reflective pattern 30; the farther away from the center O of the reflective pattern 30, the fewer light-emitting devices 20 emit light toward the reflective pattern 30. The closer the light emitting device 20 is to the center O of the reflective pattern 30, the less light is emitted from the through-hole 31; the further away from the center O of the reflective pattern 30, the more light is emitted from the through-hole 31. Thus, although the brightness of the light emitted by the light emitting device 20 decreases along the radial direction of the reflective pattern 30, the amount of light emitted by the light emitting device 20 increases, redistributing the emitted light and making the emitted luminous flux uniform across the same reflective pattern 30. This improves the brightness uniformity of the same reflective pattern 30, thereby improving the uniformity of the light emitted by the light emitting module 100, and forming a highly uniform planar light source.

[0104] In some embodiments, referring to FIG. 11 , a plurality of through holes 31 equidistant from the center of the reflective pattern 30 are arranged in a circular array, so that the light emitted by the light emitting device 20 is more evenly distributed on the reflective pattern 30 .

[0105] FIG12 is a structural diagram of another reflection pattern provided by an embodiment of the present disclosure.

[0106] In some embodiments, referring to FIG. 12 , a plurality of through holes 31 are arranged in an alternating manner. Specifically, along the radial direction of the reflective pattern 30 , the through holes 31 located in the first emission area Q1 and the through holes 31 located in the second emission area Q2 are arranged in an alternating manner, thereby reducing the distance between the through holes 31 and increasing the number of the through holes 31 . This further increases the amount of light emitted from the through holes 31 and improves the brightness uniformity of the light-emitting module 100 .

[0107] In some embodiments, referring again to FIG. 9A , multiple through-holes 31 are sequentially arranged along any radial direction of the reflective pattern 30. Specifically, the multiple through-holes 31 are sequentially arranged along the same radius r, from the center O of the reflective pattern 30 to the edge of the reflective pattern 30. The sequential arrangement of the through-holes 31 facilitates manufacturing.

[0108] FIG13 is a structural diagram of another reflection pattern provided by an embodiment of the present disclosure.

[0109] In some embodiments, the plurality of through holes 31 are symmetrically distributed. Specifically, referring to FIG13 , the plurality of through holes 31 are symmetrical along a first symmetry axis L. The first symmetry axis L is a straight line passing through the center O of the reflective pattern 30 and parallel to the plane where the reflective pattern 30 is located. The through holes 31 on both sides of the first symmetry axis L are symmetrically distributed. There is at least one through hole 31 corresponding to each side of the light-emitting device 20. The light emitted by the light-emitting device 20 is emitted from the through holes 31 on both sides respectively. Since the through holes 31 are symmetrically distributed, the amount of light emitted from the through holes 31 on both sides is approximately the same, and the light is evenly emitted from both sides of the light-emitting device 20, thereby improving the brightness uniformity of the corresponding area of ​​the reflective pattern 30. The higher the degree of symmetry, the better the natural light uniformity effect.

[0110] In some embodiments, referring again to FIG. 12 , the distance between the through-hole 31 and the edge of the reflective pattern 30 is a first distance d1, which is at least 0.1 mm, for example, 0.1 mm, 0.15 mm, or 0.2 mm. The through-hole 31 is as close as possible to the edge of the reflective pattern 30. The light irradiated by the light-emitting device 20 onto the edge of the reflective pattern 30 gradually decreases, so that the brightness of the dark area D at the edge of the reflective pattern 30 is the lowest. By providing the through-hole 31 at the edge of the reflective pattern 30, the light-emitting device 20 can emit light from the through-hole 31 close to the edge of the reflective pattern 30, thereby reducing the range of the dark area D at the edge of the reflective pattern 30.

[0111] In some embodiments, referring again to FIG. 12 , the distance between the through-hole 31 closest to the center O of the reflective pattern 30 and the center O of the reflective pattern 30 is a second distance d2. The second distance d2 is at least 0.75 mm, for example, 0.75 mm, 0.9 mm, 0.95 mm, 1 mm, etc. If the through-hole 31 is too close to the center O of the reflective pattern 30, the light emitted by the light-emitting device 20 through the through-hole 31 near the center O of the reflective pattern 30 will be greater in number and higher in brightness. This will result in higher brightness in the area near the center O of the reflective pattern 30 than in other areas of the same reflective pattern 30, resulting in poor brightness uniformity of the reflective pattern 30. Therefore, to address the above issue, the second distance d2 cannot be too small.

[0112] In some embodiments, referring to FIG12 , the projection shape of the through hole 31 on the substrate 10 is circular, that is, the through hole 31 is cylindrical, and the inner wall of the cylinder is smooth. The light incident on the inner wall of the through hole 31 is repeatedly reflected by the inner wall of the cylinder and then emitted, resulting in less light loss. At this time, the size of the through hole 31 is the diameter of the through hole 31, and the diameter of the through hole 31 is 0.1mm to 0.2mm, such as 0.1mm, 0.13mm, 0.15mm, 0.18mm, 0.2mm, etc. In some embodiments, the projection shape of the through hole 31 on the substrate 10 can also be a polygon, such as a rectangle, square, pentagon, hexagon, etc. At this time, the size of the through hole 31 is the maximum distance between the diagonals of the through hole 31. The size of the through hole 31 is 0.1mm to 0.2mm, such as 0.1mm, 0.13mm, 0.15mm, 0.18mm, 0.2mm, etc. If the diameter of the through hole 31 is too small, it is not conducive to printing. If the diameter of the through hole 31 is too large, the reflection effect of the reflective pattern 30 is weakened, so that the dark area D between the reflective patterns 30 is expanded, which is not conducive to achieving brightness uniformity of the light-emitting module 100.

[0113] FIG14 is a partial enlarged view of the light emitting module corresponding to point E in FIG8 .

[0114] In some embodiments, as shown in FIG14 , the reflective pattern 30 is circular in shape. The center O of the reflective pattern 30 is the center of the circle, and the emission areas can be circular rings with the center O of the reflective pattern 30 as the common center. This allows the through-holes 31 in the same emission area to be set at equal distances from the center of the circle, facilitating manufacturing.

[0115] FIG15 is a structural diagram of another reflection pattern provided in an embodiment of the present disclosure.

[0116] In some embodiments, referring to FIG. 15 , the reflective pattern 30 is in the shape of a polygon, such as a quadrilateral (rectangle or square), a pentagon, or a hexagon.

[0117] In some embodiments, referring again to FIG. 15 , a plurality of reflective patterns 30 are arranged in an array, and the plurality of reflective patterns 30 include a first reflective pattern 301 and a second reflective pattern 302. The first reflective pattern 301 and the second reflective pattern 302 are sequentially arranged along a diagonal line (first diagonal line m1) of the first reflective pattern 301. The plurality of reflective patterns 30 are arranged in a horizontal direction in the same row, and in a vertical direction in the same column.

[0118] The number of through-holes 31 in the direction of the first diagonal m1 is greater than the number of through-holes 31 in the horizontal or vertical direction; and / or, the number of through-holes 31 in the direction of the first diagonal m1 is greater than the number of through-holes 31 in the horizontal or vertical direction. Exemplarily, the number of through-holes 31 in the direction of the first diagonal m1 is greater than the number of through-holes 31 in the horizontal or vertical direction; further exemplary, the number of through-holes 31 in the direction of the first diagonal m1 is greater than the number of through-holes 31 in the horizontal or vertical direction; further exemplary, the number of through-holes 31 in the direction of the first diagonal m1 is greater than the number of through-holes 31 in the horizontal or vertical direction; and the number of through-holes 31 in the direction of the first diagonal m1 is greater than the number of through-holes 31 in the horizontal or vertical direction.

[0119] The third distance h3 between the first reflective pattern 301 and the second reflective pattern 302 in the direction of the first diagonal line m1 is greater than the fourth distance h1 between the first reflective pattern 301 and the second reflective pattern 302 in the horizontal direction, and the fifth distance h2 between the first reflective pattern 301 and the second reflective pattern 302 in the vertical direction. Therefore, when the number of through-holes 31 provided in the reflective pattern 30 is such that the range of the fourth distance h1 and the fifth distance h2 constitutes a bright area L, a portion of the area within the range of the third distance h3 is not illuminated by the light emitted from the through-holes 31 and remains a dark area D. To increase the amount of light emitted in the direction of the first diagonal line m1, the number of through-holes 31 in this direction is increased, so that more light emitted by the light-emitting device 20 is emitted in the direction of the first diagonal line m1, thereby reducing the extent of the dark area D within the area of ​​the third distance h3, thereby improving the brightness uniformity of the light-emitting module 100 and further enhancing the display effect of the display device.

[0120] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A light-emitting module, comprising: substrate; A plurality of light emitting devices, wherein the light emitting devices are arranged on the substrate; A plurality of reflection patterns are arranged on a side of the light-emitting device away from the substrate, and intervals are arranged between adjacent reflection patterns; the reflection patterns correspond to the light-emitting devices one by one, and the orthographic projection of the light-emitting device on the substrate is located within the orthographic projection of the reflection pattern on the substrate; the reflection pattern is provided with at least one through hole, and the orthographic projection of the through hole on the substrate does not overlap with the orthographic projection of the light-emitting device on the substrate.

2. The light emitting module according to claim 1, wherein: The number of through holes close to the center of the reflection pattern is less than the number of through holes far from the center of the reflection pattern.

3. The light emitting module according to claim 1 or 2, wherein: The sizes of the plurality of through holes are the same.

4. The light emitting module according to claim 1, wherein: A size of the through hole close to the center of the reflection pattern is smaller than a size of the through hole far from the center of the reflection pattern.

5. The light emitting module according to any one of claims 1 to 4, wherein: The plurality of through holes having equal distances from the center of the reflective pattern are arranged in a ring array.

6. The light emitting module according to claim 5, wherein: The plurality of through holes are arranged in a staggered manner.

7. The light emitting module according to claim 5, wherein: Along any radial direction of the reflective pattern, a plurality of through holes are arranged in sequence.

8. The light emitting module according to any one of claims 1 to 7, wherein: The plurality of through holes are symmetrically distributed.

9. The light emitting module according to any one of claims 1 to 8, wherein: The projection shape of the through hole on the substrate is circular or polygonal, and the size of the through hole is 0.1 mm to 0.2 mm.

10. The light emitting module according to any one of claims 1 to 9, wherein: The minimum distance between the through hole and the edge of the reflective pattern is 0.1 mm.

11. The light emitting module according to any one of claims 1 to 10, wherein: The minimum distance between the through hole closest to the center of the reflection pattern and the center of the reflection pattern is 0.75 mm.

12. The light emitting module according to any one of claims 1 to 11, wherein: The reflection pattern is in a circular or polygonal shape.

13. The light emitting module according to any one of claims 1 to 12, wherein: A plurality of the reflection patterns are arranged in an array, the plurality of reflection patterns include a first reflection pattern and a second reflection pattern, and along a diagonal direction of the first reflection pattern, the first reflection pattern and the second reflection pattern are arranged in sequence; On the first reflective pattern, the number of the through holes in the diagonal direction of the first reflective pattern is greater than the number of the through holes in the horizontal direction or the vertical direction; and / or, On the second reflective pattern, the number of the through holes in the diagonal direction of the first reflective pattern is greater than the number of the through holes in the horizontal direction or the vertical direction.

14. The light emitting module according to any one of claims 1 to 13, wherein: The thickness of the reflective pattern is 25 μm to 50 μm.

15. The light emitting module according to any one of claims 1 to 14, wherein: The distance between the side of the reflective pattern close to the substrate and the light emitting device is 20 μm to 50 μm.

16. The light emitting module according to any one of claims 1 to 15, wherein: Also includes: The bottom reflection layer is disposed on a side of the substrate close to the plurality of reflection patterns.

17. The light emitting module according to any one of claims 1 to 16, wherein: Also includes: The protective layer is disposed on the plurality of light emitting devices; and the plurality of reflective patterns are disposed on the protective layer.

18. The light emitting module according to claim 17, wherein: The protection layer has a refractive index greater than a refractive index of the reflective pattern.

19. A display device comprising: A light-emitting module as claimed in any one of claims 1 to 18.

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