Light-emitting module and display device

Abstract

A light emitting module (10) and a display device (00) relate to the technical field of display. The light-emitting module (10) comprises a first substrate (101), a plurality of first light-emitting units (102) located on the first substrate (101), a second substrate (103), and a plurality of second light-emitting units (104) located on the second substrate (103). The light emitted by the plurality of first light-emitting units (102) irradiates in a direction away from the first substrate (101) through the openings (103a) in the second substrate (103), and the light emitted by the plurality of second light-emitting units (104) also irradiates in a direction away from the first substrate (101), so that the light-emitting brightness of the light-emitting module (10) can be improved, thereby improving the display effect of the display device (00). Moreover, the plurality of first light-emitting units (102) and the plurality of second light-emitting units (104) are respectively arranged on the two substrates, so that the light-emitting units arranged on the two substrates can be respectively controlled, the power increase of a driving chip in the light-emitting module (10) can be avoided, the local heating phenomenon of the light-emitting module (10) can be avoided, and the yield of products can be ensured.

Description

Light-emitting module and display device Technical Field

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

[0002] Mini light emitting diodes (Mini LEDs) are often used to prepare high-contrast or high-brightness light-emitting modules due to their excellent local dimming performance.

[0003] Summary of the Invention

[0004] The present application provides a light-emitting module and a display device, and the technical solutions are as follows:

[0005] In one aspect, a light-emitting module is provided, comprising:

[0006] a first substrate;

[0007] a plurality of first light emitting units, the plurality of first light emitting units being located on a target side of the first substrate;

[0008] a second substrate having a plurality of openings corresponding to the plurality of first light-emitting units, wherein an orthographic projection of each opening on the first substrate covers an orthographic projection of one first light-emitting unit on the first substrate, and light emitted by the first light-emitting unit is irradiated in a target direction through the openings, where the target direction is a direction away from the first substrate;

[0009] and a plurality of second light-emitting units, wherein the plurality of second light-emitting units are located in an area of ​​the second substrate on a side away from the first substrate where the plurality of openings are not provided, the orthographic projection of each second light-emitting unit on the first substrate does not overlap with the orthographic projection of the first light-emitting unit on the first substrate, and the light emitted by the second light-emitting unit is irradiated in the target direction.

[0010] Optionally, the opening has a first opening close to the first substrate and a second opening away from the first substrate;

[0011] The orthographic projection area of ​​the first opening on the first substrate is smaller than or equal to the orthographic projection area of ​​the second opening on the first substrate, and the orthographic projection of the first opening on the first substrate is located within the orthographic projection of the second opening on the first substrate.

[0012] Optionally, the opening includes a first hole portion and a second hole portion, and the first hole portion is closer to the first substrate than the second hole portion;

[0013] The first hole portion has the first opening and a third opening disposed opposite to the first opening, the orthographic projection area of ​​the third opening on the first substrate being equal to the orthographic projection area of ​​the first opening on the first substrate, and the orthographic projection of the third opening on the first substrate overlaps with the orthographic projection of the first opening on the first substrate;

[0014] The second hole portion has the second opening and a fourth opening arranged opposite to the second opening, the area of ​​the orthographic projection of the second opening on the first substrate is larger than the orthographic projection of the fourth opening on the first substrate, and the orthographic projection of the second opening on the first substrate covers the orthographic projection of the fourth opening on the first substrate.

[0015] Optionally, the third opening and the fourth opening are connected, and an area of ​​an orthographic projection of the third opening on the first substrate is equal to an area of ​​the fourth opening on the first substrate, and the orthographic projection of the third opening on the first substrate overlaps with the orthographic projection of the fourth opening on the first substrate;

[0016] An area of ​​a cross section of the second hole portion parallel to the supporting surface of the first substrate increases as a distance between the cross section and the first substrate increases.

[0017] Optionally, the light emitting module further includes: a first reflecting portion and a second reflecting portion;

[0018] The first reflecting portion is located between the first substrate and the second substrate, and an orthographic projection of the first reflecting portion on the first substrate does not overlap with an orthographic projection of the plurality of openings on the first substrate;

[0019] The second reflecting portion is located on the side surfaces of the plurality of openings.

[0020] Optionally, the light emitting module further includes: a third reflecting portion and a fourth reflecting portion;

[0021] The third reflective portion is located on a side of the second substrate away from the first substrate, and an orthographic projection of the third reflective portion on the first substrate does not overlap with an orthographic projection of the plurality of second light-emitting units on the first substrate;

[0022] The fourth reflective portion is located on the side surfaces of the plurality of openings.

[0023] Optionally, the light emitting module further includes: a plurality of first protection portions corresponding to the plurality of first light emitting units, and a plurality of second protection portions corresponding to the plurality of second light emitting units;

[0024] Each of the first protection portions is located in one of the openings and on a side of the first light-emitting unit away from the first substrate, and an orthographic projection of each of the first protection portions on the first substrate covers an orthographic projection of the first light-emitting unit on the first substrate;

[0025] Each second protection portion is located on a side of a second light emitting unit away from the first substrate, and an orthographic projection of each second protection portion on the first substrate covers an orthographic projection of the second light emitting unit on the first substrate.

[0026] Optionally, a thickness of the first protection portion on a supporting surface perpendicular to the first substrate is less than or equal to a thickness of the second substrate.

[0027] Optionally, the light emitting module further includes: a control panel located on a side of the plurality of second light emitting units away from the first substrate;

[0028] The control panel includes: a first polarizing layer, a liquid crystal cell, and a second polarizing layer stacked in a direction away from the first substrate;

[0029] The first polarizing layer has a first transmission axis, and the first polarizing layer is used to generate polarized light with a polarization direction parallel to the first transmission axis;

[0030] The second polarizing layer has a second transmission axis, and is used to transmit polarized light having a polarization direction parallel to the second transmission axis, and to absorb polarized light having a polarization direction perpendicular to the second transmission axis.

[0031] Optionally, the control panel further comprises: a plurality of control circuits arranged in an array, a plurality of first signal lines arranged along a first direction and extending along a second direction, and a plurality of second signal lines arranged along the second direction and extending along the first direction, the first direction and the second direction being perpendicular;

[0032] The multiple control circuits constitute multiple first control circuit groups arranged along the first direction, each first control circuit group includes multiple control circuits arranged along the second direction, and each first signal line is connected to multiple control circuits in one of the first control circuit groups;

[0033] The plurality of control circuits further constitute a plurality of second control circuit groups arranged along the second direction, each second control circuit group including a plurality of control circuits arranged along the first direction, and each second signal line is connected to a plurality of control circuits in one of the second control circuit groups;

[0034] Each of the control circuits is used to drive the liquid crystal molecules in the liquid crystal box to deflect under the control of the first signal line and the second signal line.

[0035] Optionally, the number of the control circuits is equal to the total number of the plurality of first light-emitting units and the plurality of second light-emitting units;

[0036] Each of the control circuits is used to control the deflection of liquid crystal molecules located in the area where a light-emitting unit is located in the liquid crystal box.

[0037] Optionally, the light-emitting module further includes: a color conversion layer located on a side of the plurality of second light-emitting units away from the first substrate;

[0038] The colors of the light emitted by the plurality of first light-emitting units and the plurality of second light-emitting units are all the first color, and the color conversion layer includes: a first color conversion portion, a second color conversion portion and a transparent portion;

[0039] The first color conversion portion is used to convert the light of the first color into the light of the second color, the second color conversion portion is used to convert the light of the first color into the light of a third color, and the transparent portion is used to transmit the light of the first color.

[0040] Optionally, the first substrate is a circuit board, and the second substrate is a glass substrate; or,

[0041] The first substrate and the second substrate are both glass substrates.

[0042] Optionally, orthographic projections of the plurality of first light-emitting units on the first substrate and orthographic projections of the plurality of second light-emitting units on the first substrate are arranged alternately.

[0043] Optionally, the plurality of first light-emitting units and the plurality of second light-emitting units are all micro light-emitting diodes.

[0044] On the other hand, a display device is provided, comprising: a housing, a plastic frame assembly, a display module, and the light-emitting module as described in the above aspect;

[0045] The housing and the plastic frame assembly form a receiving space, the light emitting module is located in the receiving space, the display module is located on the light emitting side of the light emitting module, and the light emitting module is used to provide backlight for the display module.

[0046] Optionally, the housing is located on the non-light-emitting side of the light-emitting module, and at least a portion of the housing is located on the side of the light-emitting module. The plastic frame assembly is located on the side of the light-emitting module and is fixedly connected to the housing. The plastic frame assembly includes: a step structure;

[0047] At least a portion of the control panel in the light-emitting module is located on the step structure, and / or at least a portion of the color conversion layer in the light-emitting module is located on the step structure.

[0048] Optionally, the width of the step structure ranges from 0.4 mm to 0.5 mm;

[0049] The width of the portion of the control panel and / or the color conversion layer overlapping the step structure ranges from 0.25 mm to 0.3 mm.

[0050] Optionally, the display device further comprises: a diffusion film, a light-homogenizing film, and a prism assembly stacked in sequence between the light-emitting module and the display module, and a color filter layer located on a side of the display module away from the light-emitting module;

[0051] The diffusion film is used to diffuse the light emitted by the light emitting module, the light uniforming film is used to uniform the light, and the prism assembly is used to converge the light.

[0052] Optionally, the display module is a liquid crystal display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0054] FIG1 is a schematic structural diagram of a light-emitting module provided in an embodiment of the present application;

[0055] FIG2 is a partial schematic diagram of a second substrate provided in an embodiment of the present application;

[0056] FIG3 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0057] FIG4 is a partial schematic diagram of another second substrate provided in an embodiment of the present application;

[0058] FIG5 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0059] FIG6 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0060] FIG7 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0061] FIG8 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0062] FIG9 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0063] FIG10 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0064] FIG11 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0065] FIG12 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0066] FIG13 is a top view of a first light-emitting unit and a second light-emitting unit provided in an embodiment of the present application;

[0067] FIG14 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application;

[0068] FIG15 is a partial top view of a control panel provided in an embodiment of the present application;

[0069] FIG16 is a top view of a light-emitting unit, a first signal line, and a second signal line provided in an embodiment of the present application;

[0070] FIG17 is a top view of a first light-emitting unit and a second protection portion provided in an embodiment of the present application;

[0071] FIG18 is a partial schematic diagram of a display device provided in an embodiment of the present application;

[0072] FIG19 is a schematic structural diagram of a display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0073] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0074] In the related art, a light-emitting module includes: a substrate, and a plurality of Mini LEDs arranged on the substrate, and the plurality of Mini LEDs can emit light.

[0075] However, due to the limitation of manufacturing process precision, the distance between Mini LEDs formed on the substrate is large, resulting in poor display effect of the display device.

[0076] FIG1 is a schematic structural diagram of a light emitting module 10 provided in an embodiment of the present application. Referring to FIG1 , it can be seen that the light emitting module 10 may include: a first substrate 101 , a plurality of first light emitting units 102 , a second substrate 103 and a plurality of second light emitting units 104 .

[0077] Referring to Figure 1 , multiple first light-emitting units 102 are located on the target side of a first substrate 101. The target side of the first substrate 101 can be used to represent the light-emitting side of the light-emitting module 10. In other words, the light emitted by the multiple first light-emitting units 102 can be directed toward the target side of the first substrate 101, that is, the light emitted by the multiple first light-emitting units 102 can be emitted in a direction away from the first substrate 101.

[0078] The second substrate 103 has a plurality of openings 103a corresponding to the plurality of first light-emitting units 102. For example, there is a one-to-one correspondence between the plurality of first light-emitting units 102 and the plurality of openings 103a, meaning that each first light-emitting unit 102 corresponds to an opening 103a. The orthographic projection of each opening 103a on the first substrate 101 overlaps the orthographic projection of a corresponding first light-emitting unit 102 on the first substrate 101. As a result, light emitted by the first light-emitting unit 102 passes through the openings 103a and irradiates in a target direction W, which is a direction away from the first substrate 101.

[0079] The plurality of second light-emitting units 104 are located in an area of ​​the second substrate 103 on a side away from the first substrate 101, where the plurality of openings 103a are not provided. Thus, the orthographic projection of each second light-emitting unit 104 on the first substrate 101 does not overlap with the orthographic projection of the first light-emitting unit 102 on the first substrate 101. Furthermore, the light emitted by the second light-emitting units 104 is also directed in the target direction W.

[0080] In the embodiment of the present application, the light emitted by the multiple first light-emitting units 102 can be irradiated toward the target direction W through the opening 103a in the second substrate 103, and the light emitted by the multiple second light-emitting units 104 can also be irradiated toward the target direction W, thereby enabling the light-emitting module 10 to irradiate light toward the target direction W.

[0081] Furthermore, since the light-emitting module 10 includes a plurality of first light-emitting units 102 located on the first substrate 101 and a plurality of second light-emitting units 104 located on the second substrate 103, compared with the solution of setting a plurality of light-emitting units on one substrate, the arrangement density of the light-emitting units set in the light-emitting module 10 can be increased, thereby improving the light-emitting brightness of the light-emitting module 10.

[0082] In the related art, in order to improve the luminous brightness of the light-emitting module 10, it is necessary to increase the arrangement density of the light-emitting units in the light-emitting module 10 (that is, to increase the number of light-emitting units), which will lead to too many light-emitting units controlled by a single driver chip, increase the power of the driver chip, and cause local heating in the light-emitting module 10. Defects are prone to occur during the reliability process, including liquid crystal polarization, driver chip failure, etc., and the product yield is low.

[0083] In the embodiment of the present application, the plurality of first light-emitting units 102 and the plurality of second light-emitting units 104 are disposed on two substrates, respectively. Therefore, the light-emitting units disposed on the two substrates can be controlled separately. For example, a driver chip disposed on the first substrate 101 drives the plurality of first light-emitting units 102, while a driver chip disposed on the second substrate 103 drives the plurality of second light-emitting units 104.

[0084] Therefore, even if the arrangement density of the light-emitting units of the light-emitting module 10 is increased, thereby improving the brightness of the light-emitting module 10, it will not lead to an increase in the number of light-emitting units controlled by a single driver chip, and will not lead to an increase in the power of the driver chip, thereby avoiding local heating of the light-emitting module 10 and ensuring the yield of the product.

[0085] In summary, an embodiment of the present application provides a light-emitting module, which includes a first substrate, a plurality of first light-emitting units located on the first substrate, a second substrate, and a plurality of second light-emitting units located on the second substrate. The light emitted by the plurality of first light-emitting units is irradiated in a direction away from the first substrate through the openings on the second substrate, and the light emitted by the plurality of second light-emitting units is also irradiated in a direction away from the first substrate, thereby improving the luminous brightness of the light-emitting module and further improving the display effect of the display device. Moreover, since the plurality of first light-emitting units and the plurality of second light-emitting units are respectively arranged on the two substrates, the light-emitting units arranged on the two substrates can be controlled separately, which can avoid an increase in the power of the driving chip in the light-emitting module, avoid local heating of the light-emitting module, and ensure the yield of the product.

[0086] In the embodiment of the present application, the side of the first substrate 101 close to the second substrate 103, and the side of the second substrate 103 close to the first substrate 101, can be bonded together using adhesive. For example, the bonding area between the first substrate 101 and the second substrate 103 can be the surrounding area, in which case the adhesive can be white dam adhesive. The bonding area between the second substrate 103 and the second substrate 103 can be the middle area, in which case the adhesive can be a point adhesive.

[0087] Figure 2 is a partial schematic diagram of a second substrate provided in an embodiment of the present application. Referring to Figure 2, the opening 103a in the second substrate 103 includes a first opening k1 located close to the first substrate 101 and a second opening k2 located further away from the first substrate 101. The orthographic projection of the first opening k1 onto the first substrate 101 is smaller than or equal to the orthographic projection of the second opening k2 onto the first substrate 101, and the orthographic projection of the first opening k1 onto the first substrate 101 is within the orthographic projection of the second opening k2 onto the first substrate 101.

[0088] 1 and 2 , the area of ​​the orthographic projection of the first opening k1 on the first substrate 101 is equal to the area of ​​the orthographic projection of the second opening k2 on the first substrate 101. For example, the opening 103a may be a cylindrical opening, and the area of ​​the cross section of the cylindrical opening parallel to the supporting surface of the first substrate 101 does not change with increasing distance from the first substrate 101.

[0089] Figure 3 is a schematic diagram of the structure of another light-emitting module provided in an embodiment of the present application. Figure 4 is a partial schematic diagram of another second substrate provided in an embodiment of the present application. In conjunction with Figures 3 and 4 , the opening 103a includes a first hole portion 103a1 and a second hole portion 103a2. The first hole portion 103a1 is closer to the first substrate 101 than the second hole portion 103a2.

[0090] The first hole portion 103a1 has a first opening k1 and a third opening k3 disposed opposite the first opening k1. The area of ​​the orthographic projection of the third opening k3 on the first substrate 101 is equal to the area of ​​the orthographic projection of the first opening k1 on the first substrate 101, and the orthographic projection of the third opening k3 on the first substrate 101 overlaps with the orthographic projection of the first opening k1 on the first substrate 101. In other words, the first hole portion 103a1 can be a cylindrical hole portion of the opening 103a, and the area of ​​the cross section of the first hole portion 103a1 parallel to the supporting surface of the first substrate 101 does not change with increasing distance from the first substrate 101.

[0091] The second hole portion 103a2 has a second opening k2 and a fourth opening k4 disposed opposite to the second opening k2. The orthographic projection of the second opening k2 on the first substrate 101 is larger than the orthographic projection of the fourth opening k4 on the first substrate 101, and the orthographic projection of the second opening k2 on the first substrate 101 covers the orthographic projection of the fourth opening k4 on the first substrate 101.

[0092] Referring to Figure 4 , the third opening k3 and the fourth opening k4 are connected, and the orthographic projection of the third opening k3 on the first substrate 101 is equal to the area of ​​the fourth opening k4 on the first substrate 101, and the orthographic projection of the third opening k3 on the first substrate 101 and the orthographic projection of the fourth opening k4 on the first substrate 101 overlap. For example, the third opening k3 of the first hole portion 103a1 and the fourth opening k4 of the second hole portion 103a2 can be the same opening. Referring to Figures 3 and 4 , the area of ​​the cross-section of the second hole portion 103a2 parallel to the supporting surface of the first substrate 101 increases as the distance from the first substrate 101 increases. For example, the second hole portion 103a2 can be an inverted trapezoidal hole portion of the opening 103a.

[0093] Therefore, the opening 103a includes a cylindrical hole portion and an inverted trapezoidal hole portion, so that the opening 103a set in the second substrate 103 is roughly T-shaped, thereby ensuring that the light emitted by the first light-emitting unit 102 can be emitted from the opening 103a, thereby ensuring the lighting effect of the first light-emitting unit 102.

[0094] FIG5 is a schematic diagram of the structure of another light-emitting module provided in an embodiment of the present application. FIG6 is a schematic diagram of the structure of another light-emitting module provided in an embodiment of the present application. Referring to FIG5 and FIG6, the light-emitting module 10 further includes: a first reflecting portion 105 and a second reflecting portion 106. The first reflecting portion 105 is located between the first substrate 101 and the second substrate 103, and the orthographic projection of the first reflecting portion 105 on the first substrate 101 and the orthographic projection of the plurality of openings 103a on the first substrate 101 do not overlap. The second reflecting portion 106 is located on the side of the plurality of openings 103a. Optionally, the first reflecting portion 105 and the second reflecting portion 106 can be a white oil film.

[0095] By disposing the first reflective portion 105 between the first substrate 101 and the second substrate 103, the first reflective portion 105 can reflect the light incident thereon, thereby preventing the light emitted by the plurality of first light-emitting units 102 and the plurality of second light-emitting units 104 from being emitted in a direction opposite to the target direction W. This can increase the total amount of light emitted in the target direction W, thereby improving the brightness of the light-emitting module 10.

[0096] Furthermore, by providing a second reflective portion 106 on the side of the plurality of openings 103 a , the second reflective portion 106 can reflect the light incident thereon, thereby converging the light and improving the brightness of the light-emitting module 10 .

[0097] The light irradiating the first reflective portion 105 may include the light emitted by the first light-emitting unit 102 and / or the light emitted by the second light-emitting unit 104. Furthermore, the light irradiating the second reflective portion 106 may include the light emitted by the first light-emitting unit 102 and / or the light emitted by the second light-emitting unit 104. In other words, the light emitted by the first light-emitting unit 102 and the light emitted by the second light-emitting unit 104 may both irradiate the first reflective portion 105 or the second reflective portion 106.

[0098] Figure 7 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application. Figure 8 is a schematic structural diagram of another light-emitting module provided in an embodiment of the present application. Referring to Figures 7 and 8, the light-emitting module 10 also includes: a third reflective portion 107 and a fourth reflective portion 108. The third reflective portion 107 is located on the side of the second substrate 103 away from the first substrate 101, and the orthographic projection of the third reflective portion 107 on the first substrate 101 and the orthographic projection of the plurality of second light-emitting units 104 on the first substrate 101 do not overlap. The fourth reflective portion 108 is located on the side of the plurality of openings 103a. Optionally, the first reflective portion 107 and the second reflective portion 108 can be a white oil film.

[0099] By providing the third reflective portion 107 on a side of the second substrate 103 away from the first substrate 101, the third reflective portion 107 can reflect light incident thereon, thereby preventing light emitted by the plurality of first light-emitting units 102 and the plurality of second light-emitting units 104 from being emitted in a direction opposite to the target direction W. Thus, the total amount of light emitted in the target direction W can be increased, thereby improving the brightness of the light-emitting module 10.

[0100] Furthermore, by providing a fourth reflective portion 108 on the side of the plurality of openings 103 a , the fourth reflective portion 108 can reflect the light incident thereon, thereby converging the light and improving the brightness of the light-emitting module 10 .

[0101] The light irradiating the third reflective portion 107 may include the light emitted by the first light-emitting unit 102 and / or the light emitted by the second light-emitting unit 104. Furthermore, the light irradiating the fourth reflective portion 108 may include the light emitted by the first light-emitting unit 102 and / or the light emitted by the second light-emitting unit 104. In other words, the light emitted by the first light-emitting unit 102 and the light emitted by the second light-emitting unit 104 may both irradiate the third reflective portion 107 or the fourth reflective portion 108.

[0102] 9 to 12 , it can be seen that the light emitting module 10 may further include: a plurality of first protection portions 109 corresponding to the plurality of first light emitting units 102 , and a plurality of second protection portions 110 corresponding to the plurality of second light emitting units 104 .

[0103] Each first protection portion 109 is located within an opening 103a and on the side of the first light-emitting unit 102 away from the first substrate 101. The orthographic projection of each first protection portion 109 on the first substrate 101 covers the orthographic projection of the first light-emitting unit 102 on the first substrate 101. Thus, the provision of the first protection portion 109 can prevent the first light-emitting unit 102 from being impacted by other components, thereby ensuring the yield of the first light-emitting unit 102.

[0104] Furthermore, each second protection portion 110 is located on a side of a second light-emitting unit 104 away from the first substrate 101, and the orthographic projection of each second protection portion 110 on the first substrate 101 covers the orthographic projection of the second light-emitting unit 104 on the first substrate 101. Therefore, by providing the second protection portion 110, the second light-emitting unit 104 can be protected from being impacted by other components, thereby ensuring the yield of the second light-emitting unit 104.

[0105] Optionally, both the first protective portion 109 and the second protective portion 110 may be made of a transparent adhesive. The thickness of the first protective layer on the support surface perpendicular to the first substrate 101 is less than or equal to the thickness of the second substrate 103. This prevents the first protective portion 109 from protruding from the second substrate 103 away from the surface of the first substrate 101, ensuring that the first protective portion 109 effectively protects the first light-emitting unit 102.

[0106] For example, the thickness of the second substrate 103 is about 0.7 mm (millimeter). The thickness of the first protection portion 109 on the supporting surface perpendicular to the first substrate 101 can be 0.6 mm.

[0107] The preparation process of the light-emitting module 10 includes: obtaining a first substrate 101 and a plurality of first light-emitting units 102 located on the first substrate 101; applying a first protective portion 109 to the side of the plurality of first light-emitting units 102 facing away from the first substrate 101; obtaining a second substrate 103 and a plurality of second light-emitting units 104 located on the second substrate 103; and assembling the second substrate 103 with the first substrate 101 so that the first light-emitting units 102 are embedded in the openings 103a of the second substrate 103. As a result, the first protective portion 109 has a certain thickness, so that it can play a certain role in alignment when the first substrate 101 and the second substrate 103 are aligned, ensuring the alignment accuracy of the first substrate 101 and the second substrate 103.

[0108] Since the first light emitting unit 102 is embedded in the opening 103a of the second substrate 103, the orthographic projection of the opening 103a on the first substrate 101 must cover the orthographic projection of the first light emitting unit 102 on the first substrate 101, and there must be a gap between the opening 103a and the first light emitting unit 102.

[0109] For example, the smallest LED chip in existing Mini-LEDs is approximately 0.3 mm long. Considering that the first light-emitting unit 102 is soldered to the first substrate 101, its length after soldering is approximately 0.4 mm. Therefore, in order for the first light-emitting unit 102 to fit within the opening 103a, the diameter of the opening 103a must be greater than 0.4 mm, such as 0.5 mm.

[0110] In addition, the diameter of opening 103a can be designed based on the actual reserved space. Typically, an MNT light panel includes 5,000 light-emitting units, with a spacing of approximately 6 mm between adjacent light-emitting units. Therefore, a 0.5 mm diameter opening 103a can be designed approximately 3 mm from a light-emitting unit (the center of opening 103a is roughly located in the middle of the light-emitting unit).

[0111] Furthermore, since the first light-emitting unit 102 is located within the opening 103a, the first protective portion 109 used to encapsulate the first light-emitting unit 102 must also be located within the opening 103a. However, the diameter of the opening 103a is limited, and the design of the second protective portion 110 is not restricted by the opening 103a. Therefore, under normal circumstances, referring to Figure 13, the area of ​​the orthographic projection of the first protective portion 109 on the first substrate 101 is smaller than the area of ​​the orthographic projection of the second protective portion 110 on the first substrate 101. Of course, the area of ​​the orthographic projection of the first protective portion 109 on the first substrate 101 may also be equal to or greater than the area of ​​the orthographic projection of the second protective portion 110 on the first substrate 101, and this is not limited in the embodiments of the present application.

[0112] Figure 14 is a schematic diagram of the structure of another light-emitting module provided in an embodiment of the present application. Referring to Figure 14 , the light-emitting module 10 further includes a control panel 111 located on a side of the plurality of second light-emitting units 104 away from the first substrate 101. The control panel 111 includes a first polarizing layer 1111, a liquid crystal cell 1112, and a second polarizing layer 1113, stacked in a direction away from the first substrate 101.

[0113] The first polarizing layer 1111 has a first transmission axis and is configured to generate light whose polarization direction is parallel to the first transmission axis. For example, after light emitted by the plurality of first light-emitting units 102 and the plurality of second light-emitting units 104 is irradiated by the first polarizing layer 1111, the first polarizing layer 1111 can convert the light into polarized light whose polarization direction is parallel to the first transmission axis.

[0114] The second polarizing layer 1113 has a second transmission axis. The second polarizing layer 1113 is configured to transmit polarized light having a polarization direction parallel to the second transmission axis and to absorb polarized light having a polarization direction perpendicular to the second transmission axis.

[0115] After the first polarizing layer 1111 converts light into polarized light with a polarization direction parallel to the first transmission axis, the polarized light can be irradiated to the second polarizing layer 1113 via the liquid crystal cell 1112. After the polarized light passes through the liquid crystal cell 1112, its polarization direction may or may not change (the polarized light after passing through the liquid crystal cell 1112 can be linearly polarized light, elliptically polarized light, or circularly polarized light). Regardless of whether it changes, if the polarization direction of the polarized light irradiating the second polarizing layer 1113 is parallel to the second transmission axis, it can be transmitted through the second polarizing layer 1113 and then irradiated in the target direction W, resulting in a bright state. If the polarization direction of the polarized light irradiating the second polarizing layer 1113 is not parallel to the second transmission axis (for example, perpendicular), it will be absorbed by the second polarizing layer 1113, and the light cannot be emitted in the target direction W, resulting in a dark state.

[0116] In an embodiment of the present application, a control panel 111 is designed on the light-emitting side of the light-emitting module 10, and the control panel 111 can be used to control the deflection of liquid crystal molecules in the liquid crystal box 1112, thereby controlling whether light can pass through, thereby achieving control of the light-emitting area of ​​the light-emitting module.

[0117] Optionally, the liquid crystal cell 1112 can be a twisted nematic (TN) liquid crystal cell, an in-plane switching (IPS) liquid crystal cell, or a multi-quadrant vertical alignment (VA) liquid crystal cell. In addition, advanced super dimension switch (ADS) technology can also use an in-plane switching liquid crystal cell. The difference between ADS and IPS lies in the different electrode designs.

[0118] For a TN liquid crystal cell, the orientation of the liquid crystal molecules in the liquid crystal cell 1112 near the first polarizing layer 1111 is perpendicular to the orientation of the liquid crystal molecules in the liquid crystal layer near the second polarizing layer 1113. In the absence of power, the polarization direction of polarized light passing through the liquid crystal cell 1112 is deflected by 90°. For an IPS liquid crystal cell, the orientation of the liquid crystal molecules in the liquid crystal cell 1112 near the first polarizing layer 1111 is parallel to the orientation of the liquid crystal molecules in the liquid crystal cell 1112 near the second polarizing layer 1113. In the absence of power, the polarization direction of polarized light passing through the liquid crystal cell 1112 remains unchanged. For a VA liquid crystal cell, the orientation of the liquid crystal molecules in the liquid crystal cell 1112 near the first polarizing layer 1111 is parallel to the orientation of the liquid crystal molecules in the liquid crystal cell 1112 near the second polarizing layer 1113. In the absence of power, the polarization direction of polarized light passing through the liquid crystal cell 1112 remains unchanged.

[0119] In the first case, if liquid crystal cell 1112 is a TN liquid crystal cell and control panel 111 is in normally white mode, the orientation of the liquid crystal molecules and the transmission axis are designed as follows: the first transmission axis of first polarizing layer 1111 is parallel to the orientation direction of the liquid crystal molecules in the TN liquid crystal cell near the first polarizing layer 1111, and the second transmission axis of second polarizing layer 1113 is parallel to the orientation direction of the liquid crystal molecules in the TN liquid crystal cell near the second polarizing layer 1113. Normally white mode means that when power is off, light can be emitted, resulting in a bright state; when power is on, light cannot be emitted, resulting in a dark state.

[0120] When the liquid crystal cell 1112 is unpowered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the TN liquid crystal cell, the polarization direction of the first polarized light rotates 90°, generating second polarized light (linearly polarized light). This second polarized light has a polarization direction parallel to the second transmission axis of the second polarizer, and can be emitted through the second polarizing layer 1113, achieving a normally white mode (i.e., a bright state).

[0121] When the liquid crystal cell 1112 is powered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the TN liquid crystal cell, the polarization direction of the first polarized light remains unchanged, i.e., it remains the first polarized light. Because the polarization direction of the first polarized light is perpendicular to the second transmission axis of the second polarizer, the first polarized light cannot pass through the second polarizing layer 1113 and exit, resulting in a black state, i.e., a dark state.

[0122] In the first case, the normally white mode of the TN liquid crystal cell can be achieved by ensuring that the first transmission axis of the first polarizing layer 1111 is perpendicular to the second transmission axis of the second polarizing layer 1113. The initial orientation of the liquid crystal molecules in the TN liquid crystal cell can be any angle.

[0123] In the second case, if the liquid crystal cell 1112 is a TN liquid crystal cell and the control panel 111 is in normally black mode, the orientation of the liquid crystal molecules and the transmission axis are designed as follows: the first transmission axis of the first polarizing layer 1111 is parallel to the orientation direction of the liquid crystal molecules of the TN liquid crystal cell near the first polarizing layer 1111, and the second transmission axis of the second polarizing layer 1113 is perpendicular to the orientation direction of the liquid crystal molecules of the TN liquid crystal cell near the second polarizing layer 1113. Normally black mode means that when power is off, light cannot be emitted, resulting in a dark state; when power is on, light can be emitted, resulting in a bright state.

[0124] When the liquid crystal cell 1112 is unpowered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the TN liquid crystal cell, the polarization direction of the first polarized light rotates 90°, generating second polarized light (linearly polarized light). This second polarized light has a polarization direction perpendicular to the second transmission axis of the second polarizing layer 1113, and is therefore absorbed by the second polarizing layer 1113, resulting in no light being emitted, thus achieving a black state.

[0125] When the liquid crystal cell 1112 is powered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the TN liquid crystal cell, the polarization direction of the first polarized light remains unchanged, i.e., it remains the first polarized light. Because the polarization direction of the first polarized light is parallel to the second transmission axis of the second polarizing layer 1113, the first polarized light can pass through the second polarizing layer 1113 and exit, achieving a white state, i.e., a bright state.

[0126] In the second case, the normally black mode of the TN liquid crystal cell can be achieved by ensuring that the first transmission axis of the first polarizing layer 1111 is parallel to the second transmission axis of the second polarizing layer 1113. The initial orientation of the liquid crystal molecules in the TN liquid crystal cell can be any angle.

[0127] In the third case, if the liquid crystal box 1112 is an IPS type liquid crystal box and the control panel 111 is in the normally white mode, the orientation of the liquid crystal molecules and the design of the transmittance axis are as follows: the first transmittance axis of the first polarizing layer 1111 is parallel to the orientation direction of the liquid crystal molecules of the IPS liquid crystal box close to the first polarizing layer 1111, and the second transmittance axis of the second polarizing layer 1113 is parallel to the orientation direction of the liquid crystal molecules of the IPS liquid crystal box close to the second polarizing layer 1113.

[0128] When the liquid crystal cell 1112 is unpowered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) whose polarization direction is parallel to the first transmission axis. This first polarized light changes into second polarized light after passing through the IPS liquid crystal cell (since the liquid crystal cell 1112 is inoperative when unpowered, the second polarized light has the same polarization direction as the first polarized light). The polarization direction of this second polarized light is parallel to the second transmission axis of the second polarizing layer 1113. This second polarized light can be emitted through the second polarizing layer 1113, achieving a normally white mode, i.e., a bright state.

[0129] When the liquid crystal cell 1112 is powered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the IPS liquid crystal cell, the first polarized light changes into second polarized light (elliptically polarized light). The effective polarized light of this second polarized light (elliptically polarized light can be decomposed into two mutually perpendicular linearly polarized light components, with the larger linearly polarized light component defined as the effective polarized light, and the polarization direction of the larger linearly polarized light component is the polarization direction of the effective polarized light) is perpendicular to the second transmission axis of the second polarizing layer 1113. This second polarized light cannot pass through the second polarizing layer 1113 and exit, resulting in a black state, i.e., a dark state.

[0130] In the third case, the normally white mode of the IPS liquid crystal cell can be achieved by ensuring that the first transmission axis of the first polarizing layer 1111 is parallel to the second transmission axis of the second polarizing layer 1113. The initial orientation of the liquid crystal molecules in the IPS liquid crystal cell can be any angle.

[0131] In the fourth case, if the liquid crystal box 1112 is an IPS liquid crystal box and the control panel 111 is in the normally black mode, the orientation of the liquid crystal molecules and the design of the transmittance axis are as follows: the first transmittance axis of the first polarizing layer 1111 is parallel to the orientation direction of the liquid crystal molecules of the IPS liquid crystal box close to the first polarizing layer 1111, and the second transmittance axis of the second polarizing layer 1113 is perpendicular to the orientation direction of the liquid crystal molecules of the IPS liquid crystal box close to the second polarizing layer 1113.

[0132] When the liquid crystal cell 1112 is unpowered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) whose polarization direction is parallel to the first transmission axis. This first polarized light changes to second polarized light after passing through the IPS liquid crystal cell (since the liquid crystal cell 1112 is inactive when unpowered, the second polarized light has the same polarization direction as the first polarized light). This second polarized light has a polarization direction perpendicular to the second transmission axis of the second polarizing layer 1113, so it cannot pass through the second polarizing layer 1113 and exit, achieving a normally black mode, or dark state.

[0133] When the liquid crystal cell 1112 is powered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) whose polarization direction is parallel to the first transmission axis. The first polarized light passes through the IPS liquid crystal cell and changes into second polarized light (elliptically polarized light). The effective polarized light of this second polarized light (elliptically polarized light can be decomposed into two mutually perpendicular linear polarization components, with the larger linear polarization component defined as the effective polarized light, and the polarization direction of the larger linear polarization component is the polarization direction of the effective polarized light) has a polarization direction parallel to the second transmission axis of the second polarizing layer 1113. Therefore, the effective polarized light of this second polarized light can pass through the second polarizing layer 1113 and exit, achieving a white state, i.e., a bright state.

[0134] In the fourth case, the normally black mode of the IPS liquid crystal cell can be achieved by ensuring that the first transmission axis of the first polarizing layer 1111 is perpendicular to the second transmission axis of the second polarizing layer 1113. The initial orientation of the liquid crystal molecules in the IPS liquid crystal cell can be any angle.

[0135] In the fifth case, if the liquid crystal cell 1112 is a VA liquid crystal cell and the control panel 111 is in normally white mode, the orientation of the liquid crystal molecules and the transmission axis are designed as follows: the first transmission axis of the first polarizing layer 1111 is parallel to the second transmission axis of the second polarizing layer 1113. The VA liquid crystal cell can be arranged in any VA orientation mode.

[0136] When the liquid crystal cell 1112 is unpowered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) whose polarization direction is parallel to the first transmission axis. This first polarized light then passes through the VA liquid crystal cell and transforms into second polarized light (since the liquid crystal cell 1112 is inactive when unpowered, the second polarized light has the same polarization direction as the first polarized light). This second polarized light is parallel to the second transmission axis of the second polarizer, allowing it to pass through the second polarizing layer 1113 and exit, achieving a normally white mode (i.e., a bright state).

[0137] When the liquid crystal cell 1112 is powered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the VA liquid crystal cell, the first polarized light changes to second polarized light (elliptically polarized light). The effective polarized light of this second polarized light (elliptically polarized light can be decomposed into two mutually perpendicular linearly polarized light components, with the larger linearly polarized light component defined as the effective polarized light, and the polarization direction of the larger linearly polarized light component being the polarization direction of the effective polarized light) has a polarization direction perpendicular to the second transmission axis of the second polarizing layer 1113. Therefore, the effective polarized light of the second polarized light cannot be emitted from the second polarizing layer 1113, resulting in a black state, i.e., a dark state.

[0138] In the sixth case, if the liquid crystal cell 1112 is a VA liquid crystal cell and the control panel 111 is in normally black mode, the orientation of the liquid crystal molecules and the transmission axis are designed as follows: the first transmission axis of the first polarizing layer 1111 is perpendicular to the second transmission axis of the second polarizing layer 1113. The VA liquid crystal cell can be arranged in any VA orientation mode.

[0139] When the liquid crystal cell 1112 is unpowered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) whose polarization direction is parallel to the first transmission axis. This first polarized light then passes through the VA liquid crystal cell and transforms into second polarized light (since the liquid crystal cell 1112 is inactive when unpowered, the second polarized light has the same polarization direction as the first polarized light). This second polarized light is perpendicular to the second transmission axis of the second polarizing layer 1113, preventing it from exiting the second polarized light layer, resulting in a normally black mode (i.e., a dark state).

[0140] When the liquid crystal cell 1112 is powered, light (emitted by the first light-emitting unit 102 or the second light-emitting unit 104) enters the first polarizing layer 1111, generating first polarized light (linearly polarized light) with a polarization direction parallel to the first transmission axis. After passing through the VA liquid crystal cell, the first polarized light changes to second polarized light (elliptically polarized light). The effective polarized light of this second polarized light (elliptically polarized light can be decomposed into two mutually perpendicular linearly polarized light components, with the larger linearly polarized light component defined as the effective polarized light, and the polarization direction of the larger linearly polarized light component is the polarization direction of the effective polarized light) is parallel to the second transmission axis of the second polarizing layer 1113. Therefore, the effective polarized light of this second polarized light can pass through the second polarizing layer 1113 and exit, achieving a white state, i.e., a bright state.

[0141] 15 , the control panel 111 further includes: a plurality of control circuits 1114 arranged in an array, a plurality of first signal lines 1115 arranged along a first direction X and extending along a second direction Y, and a plurality of second signal lines 1116 arranged along a second direction Y and extending along the first direction X. The first direction X and the second direction Y are perpendicular to each other. For example, the first direction X may be the direction of pixel columns of the control panel 111 , and the second direction Y may be the direction of pixel rows of the control panel 111 .

[0142] Optionally, the multiple control circuits 1114 constitute multiple first control circuit groups A1 arranged along the first direction X, with each first control circuit group A1 including multiple control circuits 1114 arranged along the second direction Y. Each first signal line 1115 is connected to multiple control circuits 1114 in one first control circuit group A1. In other words, each first signal line 1115 can be used to provide a first signal to the multiple control circuits 1114 in one first control circuit group A1.

[0143] The multiple control circuits 1114 further constitute multiple second control circuit groups A2 arranged along the second direction Y. Each second control circuit group A2 includes multiple control circuits 1114 arranged along the first direction X. Each second signal line 1116 is connected to multiple control circuits 1114 in a second control circuit group A2. In other words, each second signal line 1116 can be used to provide a second signal to the multiple control circuits 1114 in a second control circuit group A2.

[0144] Each control circuit 1114 is used to drive the liquid crystal molecules in the liquid crystal box 1112 to deflect under the control of the first signal line 1115 and the second signal line 1116 .

[0145] In an embodiment of the present application, the control panel 111 further includes: a pixel electrode 1117 and a common electrode (not shown in the figure). The control circuit 1114 in the control panel 111 can be a switching transistor (TFT), and the switching transistor has a gate, a source and a drain. Among them, the gate is connected to the first signal line 1115, and the first signal line 1115 is used to control the on and off of the switching transistor. The source is connected to the second signal line 1116, and the drain is connected to the pixel electrode 1117. When the first signal line 1115 controls the switching transistor to turn on, the source and the drain are conductive, and the second signal line 1116 transmits the second signal to the pixel electrode 1117, which can enable the liquid crystal molecules in the liquid crystal box 1112 to be deflected under the joint drive of the pixel electrode 1117 and the common electrode.

[0146] In order to control each light-emitting unit individually, the number of control circuits 1114 can be equal to the total number of multiple first light-emitting units 102 and multiple second light-emitting units 104, so that each control circuit 1114 controls the deflection of liquid crystal molecules located in the area where a light-emitting unit is located in the liquid crystal box 1112.

[0147] Optionally, multiple first signal lines 1115 and multiple second signal lines 1116 form multiple grid structures, and each control circuit 1114 can be used to control the liquid crystal molecules in the area where one of the grid structures is located. Referring to FIG16 , the orthographic projection of each light-emitting unit on the first substrate 101 is located within one of the grid structures, so that each control circuit 1114 controls the liquid crystal molecules in the area where one of the light-emitting units is located.

[0148] 14 , the light emitting module 10 further includes a color conversion layer 112 located on a side of the plurality of second light emitting units 104 away from the first substrate 101 . Specifically, the color conversion layer 112 may be located on a side of the control panel 111 away from the first substrate 101 .

[0149] Optionally, the light emitted by the plurality of first light-emitting units 102 and the plurality of second light-emitting units 104 is all the first color. The color conversion layer 112 includes a first color conversion portion, a second color conversion portion, and a transparent portion. The first color conversion portion is configured to convert light of the first color into light of the second color, the second color conversion portion is configured to convert light of the first color into light of a third color, and the transparent portion is configured to transmit light of the first color.

[0150] For example, the first color can be blue, the second color can be red, and the third color can be green. The light passing through the color conversion layer 112 includes red light, green light, and blue light. These three colors of light can be combined to form white light, thereby making the light emitted by the light-emitting module 10 white. The first color conversion portion can be doped with red quantum dots (QDs), and the second color conversion portion can be doped with green quantum dots.

[0151] It should be noted that the light emitting module 10 may not include the color conversion layer 112 , but may simply make the light emitted by the first light emitting unit 102 and the second light emitting unit 104 white.

[0152] In the embodiment of the present application, the first substrate 101 may be a printed circuit board (PCB), and the second substrate 103 may be a glass substrate. Alternatively, both the first substrate 101 and the second substrate 103 may be glass substrates. PCBs are thinner and more flexible than glass substrates, making them more suitable for applications requiring thinning.

[0153] In the embodiment of the present application, the first light-emitting unit 102 is farther from the control panel 111, while the second light-emitting unit 104 is closer to the control panel 111. Therefore, if the first light-emitting unit 102 and the second light-emitting unit 104 are arranged in separate areas, uneven light emission from the light-emitting module 10 may result. Therefore, by staggering the first light-emitting unit 102 and the second light-emitting unit 104, light uniformity can be improved.

[0154] That is, referring to Figure 17 , the orthographic projections of the plurality of first light-emitting units 102 on the first substrate 101 and the orthographic projections of the plurality of second light-emitting units 104 on the first substrate 101 are arranged alternately. Figure 17 takes the example of the first light-emitting units 102 not being covered with the first protective portion 109 and the second light-emitting units 104 being covered with the second protective portion 110.

[0155] As can be seen from FIG. 17 , the orthographic projection of the second protection portion 110 on the first substrate 101 can be circular, and the orthographic projection of the first light-emitting unit 102 on the first substrate 101 can be rectangular. Furthermore, the orthographic projection of the first protection portion 109 on the first substrate 101 can be the same as the orthographic projection of the second protection portion 110 on the first substrate 101, that is, circular. The orthographic projection of the second light-emitting unit 104 on the first substrate 101 can be the same as the orthographic projection of the first light-emitting unit 102 on the first substrate 101, that is, rectangular.

[0156] Optionally, the plurality of first light-emitting units 102 and the plurality of second light-emitting units 104 are all micro light-emitting diodes, such as mini LEDs or micro LEDs.

[0157] Optionally, the number of first light-emitting units 102 designed on the first substrate 101 may be the same as the number of second light-emitting units 104 designed on the second substrate 103. Of course, the number of first light-emitting units 102 designed on the first substrate 101 may also be different from the number of second light-emitting units 104 designed on the second substrate 103. This embodiment of the application does not limit the number of light-emitting units designed on the two substrates.

[0158] For example, the first light-emitting units 102 can be arranged in n rows and n columns, i.e., the number of first light-emitting units 102 is n×n. The second light-emitting units 104 can be arranged in m rows and m columns, i.e., the number of second light-emitting units 104 is m×m. If the number of first light-emitting units 102 designed on the first substrate 101 is the same as the number of second light-emitting units 104 designed on the second substrate 103, then n equals m.

[0159] In summary, an embodiment of the present application provides a light-emitting module, which includes a first substrate, a plurality of first light-emitting units located on the first substrate, a second substrate, and a plurality of second light-emitting units located on the second substrate. The light emitted by the plurality of first light-emitting units is irradiated in a direction away from the first substrate through the openings on the second substrate, and the light emitted by the plurality of second light-emitting units is also irradiated in a direction away from the first substrate, thereby improving the luminous brightness of the light-emitting module and further improving the display effect of the display device. Moreover, since the plurality of first light-emitting units and the plurality of second light-emitting units are respectively arranged on the two substrates, the light-emitting units arranged on the two substrates can be controlled separately, which can avoid an increase in the power of the driving chip in the light-emitting module, avoid local heating of the light-emitting module, and ensure the yield of the product.

[0160] FIG18 is a schematic diagram of the structure of a display device provided in an embodiment of the present application. Referring to FIG18 , the display device 00 may include: a housing 20 , a plastic frame assembly 30 , a display module 40 , and the light emitting module 10 provided in the above embodiment.

[0161] The housing 20 and the frame assembly 30 form a receiving space in which the light emitting module 10 is located. The display module 40 is located on the light emitting side of the light emitting module 10 , so that the light emitting module 10 provides backlight for the display module 40 .

[0162] Optionally, the display module 40 may be a liquid crystal display module. For example, referring to Figure 19 , the display module 40 includes an array substrate 401, a color filter substrate 402 positioned opposite the array substrate 401, and a liquid crystal cell 403 positioned between the array substrate 401 and the color filter substrate 402. The array substrate 401 may include a driver circuit for driving pixel units, the driver circuit including thin-film transistors. The color filter substrate 402 may include multiple color resist blocks of different colors, each configured to transmit light of a corresponding color.

[0163] Furthermore, referring to FIG. 19 , the display module 40 further includes: a third polarizing layer 404 located on a side of the array substrate 401 away from the color filter substrate 402 , and a fourth polarizing layer 405 located on a side of the color filter substrate 402 away from the array substrate 401 .

[0164] 18 , the housing 20 is located on the non-light-emitting side of the light-emitting module 10 , and at least a portion of the housing 20 is located on the side of the light-emitting module 10 . The plastic frame assembly 30 includes a step structure 301 .

[0165] In the case where the light-emitting module 10 includes the control panel 111 but does not include the color conversion layer 112, at least a portion of the control panel 111 in the light-emitting module 10 is located on the stepped structure 301. In the case where the light-emitting module 10 includes the color conversion layer 112 but does not include the control panel 111, at least a portion of the color conversion layer 112 in the light-emitting module 10 is located on the stepped structure 301. In the case where the light-emitting module 10 includes both the control panel 111 and the color conversion layer 112, at least a portion of both the control panel 111 and the color conversion layer 112 are located on the stepped structure 301.

[0166] In the embodiment of the present application, the second substrate 103 of the light-emitting module 10 has multiple openings 103a, and thus the load-bearing capacity of the second substrate 103 is relatively poor. Therefore, by designing a step structure 301 in the plastic frame assembly 30, support can be provided for the control panel 111 and / or the color conversion layer 112, reducing the pressure of the control panel 111 and / or the color conversion layer 112 on the second substrate 103, and improving the load-bearing effect of the control panel 111 and / or the color conversion layer 112.

[0167] Optionally, the width of the step structure 301 ranges from 0.4 mm to 0.5 mm. The width of the portion of the control panel 111 and / or the color conversion layer 112 overlapping the step structure 301 ranges from 0.25 mm to 0.3 mm.

[0168] 18 , it can be seen that the display device 00 further includes: a diffuser 50 , a light-homogenizing film 60 , and a prism assembly 70 , which are located between the light-emitting module 10 and the display module 40 and are stacked in sequence.

[0169] The diffusion film 50 is used to diffuse the light emitted by the light emitting module 10 , the light homogenizing film 60 is used to homogenize the light, and the prism assembly 70 is used to converge the light.

[0170] Furthermore, referring to FIG. 18 , the display device 00 further includes a curtain tape 80. One end of the curtain tape 80 is positioned between the display module 40 and the prism assembly 70, and the other end is positioned between the display module 40 and the frame assembly 30. The curtain tape 80 is used to prevent light leakage from the sides. The display device 00 further includes a flexible circuit board 90. One end of the flexible circuit board 90 is connected to the display module 40, and the other end is bent from the side to the side of the housing 20, thereby reducing the size of the frame of the display device 00.

[0171] In addition, there may be adhesive between the first substrate 101 in the light emitting module 10 and the housing 20 to achieve a fixed connection between the light emitting module 10 and the housing 20. The adhesive may be a double-sided adhesive tape.

[0172] In addition, the display device also includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply. Those skilled in the art will understand that the structure of the above-mentioned display device does not constitute a limitation on the display device. The display device may include more or fewer of the above-mentioned components, or a combination of certain components, or a different arrangement of components. In the embodiments of the present application, the display device includes but is not limited to a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, etc.

[0173] Optionally, the display device may be any product or component with a display function, such as an LCD TV, an LCD monitor, a digital photo frame, a mobile phone, or a tablet computer.

[0174] Since the display device can have substantially the same technical effects as the light-emitting module described in the previous embodiment, the technical effects of the display device will not be repeatedly described here for the purpose of brevity.

[0175] The terms used in the embodiments of this application are only used to explain the embodiments of this application and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this application should have the common meaning understood by people with ordinary skills in the field to which this application belongs.

[0176] The terms used in the embodiments of this application are intended solely to illustrate the embodiments of this application and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in the embodiments of this application should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and similar terms used in this patent specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish between different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one. Terms such as "include" or "comprising" and similar terms mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising," and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used solely to indicate relative positions. When the absolute position of the described objects changes, the relative positions may also change accordingly.

[0177] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A light emitting module, characterized in that: The light emitting module (10) comprises: A first substrate (101); A plurality of first light-emitting units (102), wherein the plurality of first light-emitting units (102) are located on a target side of the first substrate (101); a second substrate (103), the second substrate (103) having a plurality of openings (103a) corresponding to the plurality of first light-emitting units (102), the orthographic projection of each of the openings (103a) on the first substrate (101) covering the orthographic projection of one of the first light-emitting units (102) on the first substrate (101), the light emitted by the first light-emitting unit (102) irradiating in a target direction (W) through the openings (103a), the target direction (W) being a direction away from the first substrate (101); and a plurality of second light-emitting units (104), wherein the plurality of second light-emitting units (104) are located in an area of ​​the second substrate (103) on a side away from the first substrate (101) where the plurality of openings (103a) are not provided, the orthographic projection of each second light-emitting unit (104) on the first substrate (101) not overlapping with the orthographic projection of the first light-emitting unit (102) on the first substrate (101), and the light emitted by the second light-emitting unit (104) is irradiated in the target direction (W).

2. The light emitting module according to claim 1, characterized in that: The opening (103a) has a first opening (k1) close to the first substrate (101), and a second opening (k2) far from the first substrate (101); The area of ​​the orthographic projection of the first opening (k1) on the first substrate (101) is less than or equal to the area of ​​the orthographic projection of the second opening (k2) on the first substrate (101), and the orthographic projection of the first opening (k1) on the first substrate (101) is located within the orthographic projection of the second opening (k2) on the first substrate (101).

3. The light emitting module according to claim 2, characterized in that: The opening (103a) includes a first hole portion (103a1) and a second hole portion (103a2), wherein the first hole portion (103a1) is closer to the first substrate (101) than the second hole portion (103a2); The first hole portion (103a1) has the first opening (k1) and a third opening (k3) arranged opposite to the first opening (k1), wherein the third opening (k3) is formed on the first substrate (101). The area of ​​the orthographic projection of the third opening (k3) is equal to the area of ​​the orthographic projection of the first opening (k1) on the first substrate (101), and the orthographic projection of the third opening (k3) on the first substrate (101) overlaps with the orthographic projection of the first opening (k1) on the first substrate (101); The second hole portion (103a2) comprises the second opening (k2) and a fourth opening (k4) arranged opposite to the second opening (k2), the area of ​​the orthographic projection of the second opening (k2) on the first substrate (101) is larger than the orthographic projection of the fourth opening (k4) on the first substrate (101), and the orthographic projection of the second opening (k2) on the first substrate (101) covers the orthographic projection of the fourth opening (k4) on the first substrate (101).

4. The light emitting module according to claim 3, characterized in that: The third opening (k3) and the fourth opening (k4) are connected, and the area of ​​the orthographic projection of the third opening (k3) on the first substrate (101) is equal to the area of ​​the fourth opening (k4) on the first substrate (101), and the orthographic projection of the third opening (k3) on the first substrate (101) and the orthographic projection of the fourth opening (k4) on the first substrate (101) overlap; The area of ​​the cross section of the second hole portion (103a2) parallel to the bearing surface of the first substrate (101) increases as the distance between the cross section and the first substrate (101) increases.

5. The light emitting module according to any one of claims 1 to 4, characterized in that: The light-emitting module (10) further comprises: a first reflecting portion (105) and a second reflecting portion (106); The first reflecting portion (105) is located between the first substrate (101) and the second substrate (103), and the orthographic projection of the first reflecting portion (105) on the first substrate (101) and the orthographic projection of the plurality of openings (103a) on the first substrate (101) do not overlap; The second reflecting portion (106) is located on the side of the plurality of openings (103a).

6. The light emitting module according to any one of claims 1 to 4, characterized in that: The light-emitting module (10) further comprises: a third reflecting portion (107) and a fourth reflecting portion (108); The third reflective portion (107) is located on a side of the second substrate (103) away from the first substrate (101), and an orthographic projection of the third reflective portion (107) on the first substrate (101) and an orthographic projection of the plurality of second light-emitting units (104) on the first substrate (101) do not overlap; The fourth reflective portion (108) is located on the side surfaces of the plurality of openings (103a).

7. The light emitting module according to any one of claims 1 to 6, characterized in that: The light-emitting module (10) further comprises: a plurality of first protection parts (109) corresponding to the plurality of first light-emitting units (102), and a plurality of second protection parts (110) corresponding to the plurality of second light-emitting units (104); Each of the first protection portions (109) is located in one of the openings (103a) and is located on a side of the first light-emitting unit (102) away from the first substrate (101), and an orthographic projection of each of the first protection portions (109) on the first substrate (101) covers an orthographic projection of the first light-emitting unit (102) on the first substrate (101); Each second protection portion (110) is located on a side of a second light-emitting unit (104) away from the first substrate (101), and an orthographic projection of each second protection portion (110) on the first substrate (101) covers an orthographic projection of the second light-emitting unit (104) on the first substrate (101).

8. The light emitting module according to claim 7, characterized in that: The thickness of the first protection portion (109) on a bearing surface perpendicular to the first substrate (101) is less than or equal to the thickness of the second substrate (103).

9. The light emitting module according to any one of claims 1 to 8, characterized in that: The light-emitting module (10) further comprises: a control panel (111) located on a side of the plurality of second light-emitting units (104) away from the first substrate (101); The control panel (111) comprises: a first polarizing layer (1111), a liquid crystal box (1112) and a second polarizing layer (1113) stacked in a direction away from the first substrate (101); The first polarizing layer (1111) has a first light transmission axis, and the first polarizing layer (1111) is used to generate polarized light whose polarization direction is parallel to the first light transmission axis; The second polarizing layer (1113) has a second light transmission axis, and is used to transmit polarized light whose polarization direction is parallel to the second light transmission axis, and to absorb polarized light whose polarization direction is perpendicular to the second light transmission axis.

10. The light emitting module according to claim 9, characterized in that: The control panel (111) further comprises: a plurality of control circuits (1114) arranged in an array, a plurality of first signal lines (1115) arranged along a first direction (X) and extending along a second direction (Y), and a plurality of second signal lines (1116) arranged along the second direction (Y) and extending along the first direction (X), wherein the first direction (X) and the second direction (Y) are perpendicular to each other; The plurality of control circuits (1114) constitute a plurality of first control circuit groups (A1) arranged along the first direction (X), each of the first control circuit groups (A1) comprises a plurality of control circuits (1114) arranged along the second direction (Y), and each of the first signal lines (1115) is connected to a plurality of control circuits (1114) in a group of the first control circuit groups (A1); The plurality of control circuits (1114) further constitute a plurality of second control circuit groups (A2) arranged along the second direction (Y), each second control circuit group (A2) comprising a plurality of control circuits (1114) arranged along the first direction (X), and each second signal line (1116) is connected to a plurality of control circuits (1114) in a group of the second control circuit groups (A2); Each of the control circuits (1114) is used to drive the liquid crystal molecules in the liquid crystal box (1112) to deflect under the control of the first signal line (1115) and the second signal line (1116).

11. The light emitting module according to claim 10, characterized in that: The number of the control circuits (1114) is equal to the total number of the plurality of first light-emitting units (102) and the plurality of second light-emitting units (104); Each of the control circuits (1114) is used to control the deflection of liquid crystal molecules located in a region where a light-emitting unit is located in the liquid crystal box (1112).

12. The light emitting module according to any one of claims 1 to 11, characterized in that: The light-emitting module (10) further comprises: a color conversion layer (112) located on a side of the plurality of second light-emitting units (104) away from the first substrate (101); The colors of the light emitted by the plurality of first light-emitting units (102) and the plurality of second light-emitting units (104) are all first colors, and the color conversion layer (112) comprises: a first color conversion portion, a second color conversion portion, and a transparent portion; The first color conversion portion is used to convert the light of the first color into the light of the second color, the second color conversion portion is used to convert the light of the first color into the light of the third color, and the transparent portion is used to transmit the light of the first color.

13. The light emitting module according to any one of claims 1 to 12, characterized in that: The first substrate (101) is a circuit board, and the second substrate (103) is a glass substrate; or, The first substrate (101) and the second substrate (103) are both glass substrates.

14. The light emitting module according to any one of claims 1 to 13, characterized in that: The orthographic projections of the plurality of first light-emitting units (102) on the first substrate (101) and the orthographic projections of the plurality of second light-emitting units (104) on the first substrate (101) are arranged in an alternating manner.

15. The light emitting module according to any one of claims 1 to 14, characterized in that: The plurality of first light-emitting units (102) and the plurality of second light-emitting units (104) are all micro light-emitting diodes.

16. A display device, characterized in that: The display device (00) comprises: a housing (20), a plastic frame assembly (30), a display module (40), and a light-emitting module (10) according to any one of claims 1 to 15; The housing (20) and the rubber frame assembly (30) form a containing space, the light emitting module (10) is located in the containing space, the display module (40) is located on the light emitting side of the light emitting module (10), and the light emitting module (10) is used to provide backlight for the display module (40).

17. The display device according to claim 16, characterized in that: The housing (20) is located on the non-light-emitting side of the light-emitting module (10), and at least a portion of the housing (20) is located on the side of the light-emitting module (10); the plastic frame assembly (30) is located on the side of the light-emitting module (10) and is fixedly connected to the housing (20); the plastic frame assembly (30) comprises: a step structure (301); At least part of the control panel (111) in the light-emitting module (10) is located on the step structure (301), and / or at least part of the color conversion layer (112) in the light-emitting module (10) is located on the step structure (301).

18. The display device according to claim 16 or 17, characterized in that: The width of the step structure (301) ranges from 0.4 mm to 0.5 mm; The width of the portion of the control panel (111) and / or the color conversion layer (112) overlapping the step structure (301) ranges from 0.25 mm to 0.3 mm.

19. The display device according to any one of claims 16 to 18, characterized in that: The display device further comprises: a diffusion film (50), a light homogenizing film (60) and a prism assembly (70) which are located between the light-emitting module (10) and the display module (40) and are stacked in sequence, and a color film layer located on a side of the display module (40) away from the light-emitting module (10); The diffusion film (50) is used to diffuse the light emitted by the light-emitting module (10), the light-homogenizing film (60) is used to homogenize the light, and the prism assembly (70) is used to converge the light.

20. The display device according to any one of claims 16 to 19, characterized in that: The display module (40) is a liquid crystal display module.

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