CN216389423U

CN216389423U - Light-emitting module and display device

Info

Publication number: CN216389423U
Application number: CN202122054994.3U
Authority: CN
Inventors: 张晟; 刘理想; 张世诚
Original assignee: Shine Optoelectronics Kunshan Co Ltd
Current assignee: Shine Optoelectronics Kunshan Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-04-26
Anticipated expiration: 2031-08-27

Abstract

The utility model provides a light-emitting module and a display device. The base plate comprises a substrate and a first structural layer located on the substrate, the first structural layer is located on one side of the substrate, and a first groove is formed in the first structural layer and located on one side, away from the substrate, of the first structural layer. The first driving circuit layer comprises at least one first signal line positioned in the first groove. The first light-emitting unit group is located on one side, provided with the first driving circuit layer, of the substrate and comprises at least one first lamp bead, and the first lamp beads are connected in series on the first signal line. In the light-emitting module, the first signal line is arranged in the first groove of the substrate and is embedded in the substrate, so that the first signal line is not damaged due to abrasion and the like caused by exposure outside the substrate, and the design thickness of the light-emitting module is not increased due to the arrangement of the first signal line, thereby being beneficial to the light and thin design of the light-emitting module.

Description

Light-emitting module and display device

Technical Field

The utility model relates to the field of backlight display, in particular to a light-emitting module and a display device.

Background

The Mini LED (sub-millimeter Light Emitting Diode) backlight Display technology is a new Display technology different from the conventional Liquid Crystal Display (LCD) and Organic Light-Emitting Diode (OLED) Display. Compared with the latter two, the Mini LED backlight panel has higher color contrast, brightness and color gamut, longer service life and thinner thickness, is a key field for the development of panel industry in recent years, and has wide prospect. However, the current Mini LED backlight panel is limited to its own structural design, and the circuit for driving the Mini LED may protrude above the substrate, and during the production and application process, the circuit may be damaged by friction, collision, etc., resulting in circuit fracture, so that the Mini LED backlight panel has poor functions.

Disclosure of Invention

In view of the above, the present invention provides a light emitting module and a display device, in which a substrate of the light emitting module is provided with a groove for accommodating a signal line in a driving circuit layer, so that the signal line is not exposed outside the substrate to cause damage such as abrasion, and the arrangement of the signal line does not increase the design thickness of the light emitting module, thereby facilitating the light and thin design of the light emitting module.

A first aspect of the present disclosure provides a light emitting module including a substrate, a first driving circuit layer, and at least one first light emitting cell group. At least one first groove is arranged on the surface of the substrate. The first driving circuit layer is positioned on the substrate and comprises at least one first signal line positioned in the first groove. The first light-emitting unit group is located on one side, provided with the first driving circuit layer, of the substrate and comprises at least one first lamp bead, and the first lamp beads are connected in series on the first signal line.

In the above scheme, the first signal line is embedded in the first groove of the substrate, so that the first signal line is not damaged due to abrasion and the like caused by being exposed outside the substrate, and the arrangement of the first signal line does not increase the design thickness of the light-emitting module, thereby being beneficial to the light and thin design of the light-emitting module.

In a specific embodiment of the first aspect of the present disclosure, the base plate further comprises a substrate and a first structural layer substrate. The first structural layer is located on a side of the substrate, and the first groove is formed in the first structural layer and located on a side of the first structural layer facing away from the substrate.

In a specific embodiment of the first aspect of the present disclosure, the first structural layer includes a plurality of first sub-structural layers arranged one above another, and each of the first sub-structural layers has a first sub-groove disposed therein. The first signal line comprises a plurality of first sub-signal lines respectively positioned in the first sub-grooves, and the first sub-structure layer is provided with a first through hole, so that the plurality of first sub-signal lines are connected through the first through hole, for example, connected in series or in parallel.

In the above scheme, the first signal lines are arranged to be composed of the first sub-signal lines which are connected with each other and located on different layers by the plurality of first sub-structure layers, so that the arrangement space of the first signal lines is further increased, the occupied area of the first signal lines in the transverse direction of the substrate is reduced, the resistance of the first signal lines is further reduced, and the voltage drop generated on the first signal lines when the first lamp beads are driven to emit light is reduced.

In a specific embodiment of the first aspect of the present disclosure, the first groove includes a plurality of first groove segments arranged at intervals, and the light emitting module further includes a plurality of first connecting portions. The first connecting portions are located on the first structural layer and between the adjacent first slot segments, and each first connecting portion comprises a first portion and a second portion which are respectively connected with the first signal lines in the adjacent first slot segments. The first portion and the second portion are spaced from each other, and the first lamp bead is connected between the first portion and the second portion.

In a specific embodiment of the first aspect of the present disclosure, the first slot segments are divided into first slot segments and second slot segments, the length of the first slot segments is smaller than that of the second slot segments, the first slot segments in each row are arranged in an array, so that the first slot segments form a first slot group, a second slot segment is disposed between adjacent first slot groups, and two ends of the second slot segments are respectively connected to end portions of the adjacent first slot groups through first connection portions.

In another embodiment of the first aspect of the present disclosure, the first slot segments are arranged in an array such that the first slot segments of each row form a first slot group, and both ends of the first slot group are respectively connected with the end portions of the adjacent first slot groups by first connection portions.

In another specific implementation manner of the first aspect of the present disclosure, the light emitting module further includes a second driving circuit layer, and the second driving circuit layer is located on a side of the substrate away from the first driving circuit layer and includes at least one second signal line. The substrate is provided with at least one second via through which the first signal line and the second signal line are connected, e.g. in series or in parallel.

In the scheme, the second signal line connected with the first signal line is arranged on the side, away from the first lamp bead, of the substrate, and a circuit for driving the first lamp bead does not need to be arranged on one side of the substrate, so that the occupied area of the circuit on the side, provided with the lamp bead, of the substrate is reduced; in addition, if the connection is parallel, the first signal line and the second signal line are connected in parallel, compared with the case that the first signal line is independently arranged, the overall resistance value is reduced, and when the first driving circuit layer and the second driving circuit layer are driven to enable the first lamp beads to emit light, the voltage consumption is reduced, so that the brightness difference between the first lamp beads connected in series is reduced, and the light emitting uniformity of the whole light emitting film is improved.

In a specific embodiment of the first aspect of the present disclosure, the substrate further comprises a second structural layer. The second structure layer is located on one side, away from the first structure layer, of the substrate, at least one second groove is formed in the surface, away from the substrate, of the second structure, and the second signal line is located in the second groove.

In the above scheme, the second signal line is embedded in the second groove of the substrate, so that the second signal line is not damaged due to abrasion and the like caused by being exposed outside the substrate, and the design thickness of the light-emitting module is not increased due to the arrangement of the second signal line, which is beneficial to the light and thin design of the light-emitting module.

In a specific embodiment of the first aspect of the present disclosure, the second structural layer includes a plurality of second sub-structural layers arranged in a stacked manner, and each of the second sub-structural layers has a second sub-groove disposed therein. The second signal line comprises a plurality of second sub-signal lines respectively positioned in the second sub-grooves, and a third through hole is arranged in the second sub-structure layer, so that the plurality of second sub-signal lines are connected through the third through hole, for example, connected in series or in parallel.

In the above scheme, the second signal lines are arranged to be composed of the second sub-signal lines which are connected with each other and located on different layers by the plurality of second sub-structure layers, so that the arrangement space of the second signal lines is further increased, the occupied area of the second signal lines in the transverse direction of the substrate is reduced, the resistance of the second signal lines is further reduced, and the voltage drop generated on the second signal lines when the second lamp beads are driven to emit light is reduced.

In a specific implementation manner of the first aspect of the present disclosure, the light emitting module further includes at least one second light emitting unit group, where the second light emitting unit group is located on one side of the substrate where the second driving circuit layer is disposed, and includes at least one second lamp bead connected in series to the second signal line.

In the above scheme, can so that the lamp pearl can both be arranged to the both sides of luminous module to improve the density of arranging of lamp pearl, with the whole luminance of improving the luminescent film group.

In a specific embodiment of the first aspect of the present disclosure, the second groove includes a plurality of second groove segments arranged at intervals, and the light emitting module further includes a plurality of second connection portions. The second connecting parts are positioned on the second structural layer and between the adjacent second groove sections, and each second connecting part comprises a third part and a fourth part which are respectively connected with the second signal wires in the adjacent second groove sections. The third portion and the fourth portion are spaced from each other, and the second lamp bead is connected between the third portion and the fourth portion.

In a specific embodiment of the first aspect of the present disclosure, the second slot segments are divided into third slot segments and fourth slot segments, the length of the third slot segments is smaller than that of the fourth slot segments, the third slot segments are arranged in an array so that the third slot segments in each row form a second slot group, a fourth slot segment is arranged between adjacent second slot groups, and two ends of each fourth slot segment are respectively connected to end portions of the adjacent second slot groups through second connection portions.

In another specific embodiment of the first aspect of the present disclosure, the second slot segments are arranged in an array such that the second slot segments of each row form a second slot group, and both ends of the second slot group are respectively connected with the end portions of the adjacent second slot groups by first connection portions.

In a specific implementation manner of the first aspect of the present disclosure, an orthographic projection of the second bead on the surface where the substrate is located and an orthographic projection of the first bead on the surface where the substrate is located coincide.

In another specific implementation manner of the first aspect of the present disclosure, an orthographic projection of the second lamp bead on the surface of the substrate is located between gaps of orthographic projections of the first lamp bead on the surface of the substrate.

In above-mentioned scheme, the light of second lamp pearl can see through the clearance outgoing of first lamp pearl to make the light distribution of luminescence film group outgoing even.

In one specific embodiment of the first aspect of the present disclosure, the substrate is a transparent substrate, and the first and second grooves are grid-shaped grooves such that the first and second signal lines are in a grid-shaped structure.

In the above scheme, the first signal line and the second signal line are designed to be of the grid structure, so that the first signal line and the second signal line are integrally transparent, and the light transmittance of the substrate is improved to improve the light brightness.

A second aspect of the present disclosure provides a display device, which includes the light emitting module in the first aspect.

In a specific embodiment of the second aspect of the present disclosure, the first lamp bead is configured to emit colored light.

In another specific embodiment of the second aspect of the present disclosure, the display device further includes a light uniformizing plate and a display layer disposed to overlap the light uniformizing plate. The light emitting module is configured to enable the emergent light to pass through the light homogenizing plate and then to be emitted into the display layer.

Drawings

Fig. 1 is a schematic view of a partial structure of a light emitting module according to an embodiment of the present disclosure;

fig. 2 is a schematic partial structure diagram of another light emitting module according to an embodiment of the disclosure;

fig. 3 is a schematic partial structure diagram of another light emitting module according to an embodiment of the disclosure;

fig. 4A is a schematic plan view illustrating a light emitting module according to an embodiment of the present disclosure;

fig. 4B is an enlarged schematic structural view of the first connection portion and the first lamp bead in the light emitting module shown in fig. 4A;

fig. 4C is a cross-sectional view of the first connection portion and the first lamp bead shown in fig. 4B;

FIG. 4D is a schematic diagram of the first connection portion and the first groove shown in FIG. 4B;

FIG. 4E is an enlarged view of the region S shown in FIG. 4A;

fig. 5 is a schematic plan view illustrating a light emitting module according to an embodiment of the present disclosure;

fig. 6 is a schematic partial structure diagram of another light emitting module according to an embodiment of the disclosure;

fig. 7 is a schematic partial structure diagram of another light emitting module according to an embodiment of the disclosure; and

fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The present disclosure provides a light emitting module and a display device, wherein a substrate of the light emitting module is provided with a groove for accommodating a signal line in a driving circuit layer, so that the signal line is not damaged by being exposed outside the substrate, such as abrasion, and the signal line is not arranged to increase the design thickness of the light emitting module, thereby facilitating the light and thin design of the light emitting module.

At least one embodiment of the present disclosure provides a light emitting module including a substrate, a first driving circuit layer, and at least one first light emitting cell group. At least one first groove is arranged on the surface of the substrate. The first driving circuit layer is positioned on the substrate and comprises at least one first signal line positioned in the first groove. The first light-emitting unit group is located on one side, provided with the first driving circuit layer, of the substrate and comprises at least one first lamp bead, and the first lamp beads are connected in series on the first signal line. The first signal line is embedded in the first groove of the substrate, so that the first signal line is not damaged due to abrasion and the like caused by being exposed outside the substrate, and the arrangement of the first signal line does not increase the design thickness of the light-emitting module, thereby being beneficial to the light and thin design of the light-emitting module. . The signal line may be used to transmit a signal, turn on a power supply, and the like.

The following describes a light emitting module and a display device according to at least one embodiment of the present disclosure with reference to the drawings. In addition, in the embodiments, a spatial rectangular coordinate system is established with a surface where the base plate is located (in the case where the base plate includes a substrate, the surface corresponds to the surface where the substrate is located) as a reference, in which an X axis and a Y axis are parallel to the surface where the base plate is located, and a Z axis is perpendicular to the surface where the base plate is located, so as to perform directional description on the positions of the respective structures in the light emitting module and the display device.

As shown in fig. 1, in the light emitting module 10, the first driving circuit layer 210 is located on one side of the substrate, at least one first light emitting unit group 310 is disposed on the first driving circuit layer 210, the first light emitting unit group 310 includes a first lamp bead 311, and the first driving circuit layer 210 includes a first signal line 211. The surface of the substrate 100 is provided with a first groove 111, and the first signal line 211 is located in the first groove 111. For example, the first signal lines 211 may be disposed in one-to-one correspondence with the first light emitting cell groups 310. For example, in a case where each of the first light emitting unit groups 310 includes a plurality of first lamp beads 311, the plurality of first lamp beads 311 of the first light emitting unit group 310 may be connected in series on a corresponding one of the first signal lines 211. The first signal line 211 is embedded in the first groove 111 and is not damaged by scratches and the like. In addition, the average thickness of the substrate 100 is reduced due to the first groove 111 in the substrate 100, so that the substrate 100 is easier to bend, that is, the light emitting module has stronger bending capability, and the light emitting module is more beneficial to be applied to the field of bending or flexible display.

For example, in some embodiments of the present disclosure, in a manufacturing process of the light emitting module, after the substrate 100 is provided, the first groove 111 may be formed on the surface of the substrate 100 by imprinting (e.g., hot pressing), etching (e.g., photolithography), and the like. For example, in other embodiments of the present disclosure, the substrate 100 having the first groove 111 may be directly formed by molding or the like.

In a light emitting module provided in at least one embodiment of the present disclosure, the base plate further includes a substrate and a first structural layer. The first structural layer is located on a side of the substrate, and the first groove is formed in the first structural layer and located on a side of the first structural layer facing away from the substrate. Illustratively, as shown in fig. 2, the base plate 100 includes a substrate 110 and a first structural layer 120 on the substrate 110. The first structural layer 120 is used to form the first groove 111. The substrate 110 may serve as a base of the whole substrate, the substrate 110 may have greater strength (e.g., tensile, compressive, etc.) to provide support compared to the first structural layer 120, and the substrate 110 may be designed to use a flexible base material and have a smaller thickness so that it has good bending performance. For example, the first structure layer 120 is a UV paste, and during the manufacturing process, the substrate 110 may be coated with the UV paste, the UV paste is printed and cured by using a corresponding mold, and then the first recess 111 is formed after demolding, and then the first recess 111 is filled with a conductive material to form the first signal line 211. Similarly, a UV paste is coated on the other side of the substrate 110, the UV paste is imprinted and cured by using a corresponding mold, and then the second recess 112 is formed after demolding, and then the second recess 112 is filled with a conductive material to form the second signal line 221. Then, at appropriate positions (selected according to process requirements), a plurality of first via holes 101 are formed by laser drilling, the first via holes 101 are filled with conductive materials, and the conductive materials in the first via holes 101 are respectively contacted with the conductive materials in the first grooves 111 and the second grooves 112 to electrically connect the first signal lines 211 and the second signal lines 221. For example, in at least one embodiment of the present disclosure, the first grooves 111 are in a grid shape, the second grooves 112 are in a grid shape, and the apertures of the first through holes 101 are respectively larger than the grid widths of the first grooves 111 and the second grooves 112, so as to ensure the communication between the first through holes 101 and the first grooves 111 and the second grooves 112.

In at least one embodiment of the present disclosure, a light emitting module is provided, in which a first structural layer includes a plurality of first sub-structural layers stacked one on another, and each of the first sub-structural layers has a first sub-groove disposed therein. The first signal line comprises a plurality of first sub-signal lines respectively positioned in the first sub-grooves, and a first through hole is formed in the first sub-structure layer, so that the plurality of first sub-signal lines are connected through the first through hole. Through with a plurality of first sub-structure layers, set up first signal line as to constitute by the first sub-signal line that connects each other and be located different layers to the space of arrangement of first signal line has further been increased, with the area occupied of first signal line in the horizontal direction of reduction base plate, thereby further reduces the resistance of first signal line, and reduces the voltage drop that produces on first signal line when driving first lamp pearl and give out light. Illustratively, as shown in fig. 3, the first structural layer of the substrate includes two first sub-structural layers 121 stacked on the substrate 110, a surface of each sub-structural layer 121 facing away from the substrate 110 is formed with a first sub-groove 1111, and the first sub-signal line 2111 of the first signal line is filled in the first sub-groove 1111. In this way, the first notch is split into the first sub-notch 1111 located in two layers, and the first signal line is also split into the first sub-signal line 2111 located in two layers. The two layers of the first sub-signal lines 2111 may be connected together through the first via hole 102 in the first sub-structure layer 121. For example, the first via hole 102 may be provided in plurality so that a multi-point connection may be achieved between the first sub-signal lines 2111 of two layers.

For example, in an embodiment of the present disclosure, a thickness of the first sub-signal line 2111 in fig. 3 is equal to a thickness of the first signal line 211 in fig. 1 or fig. 2, or a sum of thicknesses of the first sub-signal lines 2111 in the first sub-structure layer 121 located at different layers in fig. 3 is greater than the thickness of the first signal line 211 in fig. 1 or fig. 2, in which case a total resistance of the first signal line in fig. 3 may be less than a total resistance of the first signal line 211 in fig. 1 or fig. 2.

In the embodiment of the present disclosure, in the case that the first groove is provided on the substrate, the extending shape of the first groove is not limited, and may be designed according to the needs of the actual process. Several design structures of the first groove and the corresponding structures of the light emitting module are described below with reference to the drawings.

For example, in some embodiments of the present disclosure, a light emitting module is provided, in which the first groove (or the first sub-groove) corresponding to each of the first signal lines may be a continuous groove structure, that is, the first signal line (or the first sub-signal line) is a continuous and uninterrupted signal line.

For example, in some embodiments of the disclosure, the first groove includes a plurality of first groove segments arranged at intervals, and the light emitting module further includes a plurality of first connecting portions. The first connecting portions are located on the first structural layer and between the adjacent first slot segments, and each first connecting portion comprises a first portion and a second portion which are respectively connected with the first signal lines in the adjacent first slot segments. The first portion and the second portion are spaced from each other, and the first lamp bead is connected between the first portion and the second portion. Because the first signal line is embedded in the first groove, when the first lamp bead is installed, the first lamp bead can be difficult to directly contact with the first signal line. Illustratively, as shown in fig. 2 and fig. 4A to 4C, the first groove 111 is configured to be formed by a plurality of first groove segments arranged at intervals, that is, the first groove 111 is broken into a plurality of grooves, each groove is a first groove segment, the first portion 411 and the second portion 412 of the first connection portion 410 are respectively connected to different first groove segments, each first lamp bead 311 includes

pins

311a and 311b and a body portion 311C (which can be energized to emit light), the pin 311a is connected to the first portion 411, and the pin 311b is connected to the second portion 412, so that the first lamp beads 311 are connected in series to the first signal line. For example, the first connection portion 410 may be designed such that a portion of the first portion 411 and the second portion 412 covers a portion of the first groove 111, thereby ensuring that the first portion 411 and the second portion 412 and the first in the first groove 111 are connected for signal lines.

It should be noted that in the embodiment of the present disclosure, the first portion 411 and the second portion 412 of the first connection portion 410 may be designed according to the specific type of the first lamp bead, for example, for a conventional LED lamp bead, the first portion 411 and the second portion 412 of the first connection portion 410 may be designed as shown in fig. 4, that is, the first portion 411 is designed like an "L" shape, and the second portion 412 is designed like a rectangle.

In some embodiments of the disclosure, the first slot segments are divided into first slot segments and second slot segments, the length of the first slot segments is smaller than that of the second slot segments, the first slot segments in each row are arranged in an array, so that the first slot segments form a first slot group, a second slot segment is arranged between adjacent first slot groups, and two ends of each second slot segment are respectively connected to end portions of the adjacent first slot groups through first connecting portions. Illustratively, as shown in fig. 4A, the first groove segments of the first groove have different lengths, the first groove segments are divided into a first groove segment type 111a and a second groove segment type 111b, the first groove segment type 111a has a smaller length than the second groove segment type 111b, the first groove segment type 111a is arranged in 4 rows (the row direction is parallel to the X-axis direction) and 3 columns (the column direction is parallel to the Y-axis direction), a single first groove segment type 111a in each row forms a first groove group, so as to form 4 first groove groups, a second groove segment type 111b is arranged between each adjacent first groove groups, and the adjacent first groove groups are connected together through the second groove segment type 111b, that is, a plurality of first groove groups (the first groove segments 111a therein) and a plurality of second groove segments 111b are alternately arranged and connected end to form a multi-stage "S" type.

In some embodiments of the disclosure, the first slot segments are arranged in an array such that the first slot segments of each row form a first slot group, and two ends of each first slot group are respectively connected to end portions of adjacent first slot groups through first connection portions. Illustratively, as shown in fig. 5, the first groove segments of the first groove are all first groove segment types 111a, the first groove segment types 111a are arranged in 4 rows (the row direction is parallel to the X-axis direction) and 3 columns (the column direction is parallel to the Y-axis direction), a single first groove segment type 111a of each row is formed into one first groove group, so as to form 4 first groove groups, and the 4 first groove groups are connected together end to end, that is, a plurality of first groove groups (the first groove segment types 111a therein) are connected end to form a multi-stage "S" shape.

In at least one embodiment of the present disclosure, the light emitting module further includes a second driving circuit layer, the second driving circuit layer is located on a side of the substrate away from the first driving circuit layer, and the second driving circuit layer includes at least one second signal line. The substrate is provided with at least one second via through which the first signal line and the second signal line are connected, e.g. in series or in parallel. A second signal wire connected with the first signal wire is arranged on one side of the substrate, which is far away from the first lamp bead, and a circuit for driving the first lamp bead does not need to be arranged on one side of the substrate, so that the occupied area of the circuit on the side of the substrate, on which the lamp bead is arranged, is reduced; in addition, if the connection is parallel, the first signal line and the second signal line are connected together, compared with the case that the first signal line is independently arranged, the overall resistance value is reduced, and when the first driving circuit layer and the second driving circuit layer are driven to enable the first lamp beads to emit light, the voltage consumption is reduced, so that the brightness difference between the first lamp beads connected in series is reduced, and the light emitting uniformity of the whole light emitting film is improved.

For example, as shown in fig. 2 or 3, in the light emitting module 10, the first driving circuit layer 210 and the second driving circuit layer 220 are located at both sides of the substrate, and the second driving circuit layer 220 includes the second signal line 221. The substrate 100 is provided with a second via 101, and the first signal line 211 and the second signal line 221 are connected through the second via 101.

It should be noted that fig. 2 and fig. 3 are cross-sectional views showing only a partial region of the structure of the light emitting module 10, and in the whole light emitting module 10, a plurality of second through holes 101 are provided in the substrate 100, so that each first signal line 211 and the corresponding second signal line 221 can be connected in multiple points, that is, each first signal line 211 and the corresponding second signal line 221 are connected in parallel.

It should be noted that, in the embodiment of the present disclosure, the width of the second through hole may be smaller than, equal to, or larger than the width of the first groove where it is located, and is not limited to the arrangement form shown in fig. 2 and fig. 3. For example, in the region where the second via hole is provided, the size of the portion of the first groove at this position is larger than that of the portion located in the other region, so that the second via hole has a larger width, that is, at the position of the second via hole, the portion of the first signal line located in the groove, the conductive material filled in the second via hole (which may be integrally formed with the first signal line) forms a structure similar to a contact pad, and by having a relatively large design area, the alignment between the first signal line, the conductive material filled in the second via hole, and the second signal line is ensured, thereby ensuring the connection between the first signal line and the second signal line.

For example, in some embodiments of the present disclosure, in the case that the first groove is formed by a photolithography method, the first groove and the second via 101 may be formed in the same photolithography process, thereby reducing a manufacturing process flow of the light emitting module. For example, when the first groove 111 is formed on the substrate 100, a photoresist may be deposited on the substrate 100, and then a two-tone mask is provided, that is, the mask includes a first light transmission region having a light transmittance greater than that of a second light transmission region and light-shielding regions, the positions of the first light transmission region and the second through-hole 101 to be formed, and the positions of the second light transmission region and the first groove 111 to be formed (except the position of the second through-hole 101) correspond; then, exposing and developing the photoresist, removing a part of the photoresist corresponding to the position of the second through hole 101 to be formed, and thinning a part of the photoresist corresponding to the position of the first groove 111 to be formed; then, the substrate 100 is etched by using the remaining photoresist as a mask, and the depth of the formed second through hole 101 is greater than the depth of the first groove 111.

In some embodiments of the present disclosure, the second driving circuit layer may be further provided in a manner of referring to the first driving circuit layer. For example, the second signal line of the second driving circuit layer may be disposed in the groove, the second signal line may also be disposed to be formed by connecting a plurality of sub-signal lines, and the shapes of the second signal line and the groove for defining the second signal line may refer to the shapes of the first signal line and the first groove for defining the first signal line described above. Next, the structure of the light emitting module in these embodiments will be described.

In at least one embodiment of the disclosure, a light emitting module is provided, in which the substrate further includes a second structure layer. The second structure layer is located on one side, away from the first structure layer, of the substrate, at least one second groove is formed in the surface, away from the substrate, of the second structure, and the second signal line is located in the second groove. The second signal line is embedded in the second groove of the substrate, so that the second signal line is not damaged due to abrasion and the like caused by being exposed outside the substrate, and the design thickness of the light-emitting module is not increased due to the arrangement of the second signal line, thereby being beneficial to the light and thin design of the light-emitting module. For example, referring back to fig. 2 or fig. 3, a second structural layer 130 is disposed on a surface of the substrate 100 facing away from the first driving circuit layer 210, a second groove 112 is disposed on a surface of the second structural layer 130 facing away from the substrate 110, and the second signal line 221 is located in the second groove 112.

In a light emitting module provided in at least one embodiment of the present disclosure, the second structure layer includes a plurality of second sub-structure layers arranged in a stacked manner, and each of the second sub-structure layers has a second sub-groove formed therein. The second signal line comprises a plurality of second sub-signal lines respectively positioned in the second sub-grooves, and a third through hole is formed in the second sub-structure layer, so that the plurality of second sub-signal lines are connected through the third through hole. Through with a plurality of second sub-structure layers, set up the second signal line as by connecting each other and being located the second sub-signal line constitution of different layers to the space of arrangement of second signal line has further been increased, with the area occupied of second signal line in the horizontal direction of reduction base plate, thereby further reduces the resistance of second signal line, and the reduction drives the second lamp pearl and send out the pressure drop that produces on the second signal line when luminous. In this embodiment, the arrangement manner of the second structure layer and the second signal line may be the arrangement manner of the first structure layer and the first signal line in the embodiment shown in fig. 3, which is not described herein again.

In the light emitting module provided in at least one embodiment of the present disclosure, the light emitting module further includes at least one second light emitting unit group, and the second light emitting unit group is located on one side of the substrate where the second driving circuit layer is disposed, and includes at least one second lamp bead connected in series to the second signal line. So, can so that the both sides of luminous module can both arrange the lamp pearl to improve the density of arranging of lamp pearl, with the whole luminance of improving the luminous membrane group. For example, as shown in fig. 6, a second light emitting unit group 320 is disposed on a side of the second structure layer 130 away from the substrate 110, and the second light emitting unit group includes a plurality of second beads 321.

In the light emitting module provided by at least one embodiment of the present disclosure, the second groove includes a plurality of second groove segments arranged at intervals, and the light emitting module further includes a plurality of second connecting portions. The second connecting parts are positioned on the second structural layer and between the adjacent second groove sections, and each second connecting part comprises a third part and a fourth part which are respectively connected with the second signal wires in the adjacent second groove sections. The third portion and the fourth portion are spaced from each other, and the second lamp bead is connected between the third portion and the fourth portion. For example, as shown in fig. 6 or fig. 7, the second groove 112 is configured to be formed by a plurality of second groove segments arranged at intervals, that is, the second groove 112 is broken into a plurality of grooves, each groove is a first groove segment, the third portion 421 and the fourth portion 422 of the second connection portion 420 are respectively connected to different first groove segments, and each second bead 321 (or a portion thereof for connecting to an external circuit) is located between the third portion 421 and the fourth portion 422. In this embodiment, the arrangement manner of the second lamp bead 321 and the second connection portion 420 can refer to the related description of the first lamp bead and the second connection portion in the foregoing embodiment, which is not described herein again.

In the embodiment of the present disclosure, the substrate may be made of glass, organic glass, etc., PET (polyethylene terephthalate), PMMA (polymethyl methacrylate), PI (polyimide), CPI (transparent polyimide), etc., and the thickness thereof may be 25 to 250 μm. The material of the first and second structural layers may be ultraviolet curing acrylic resin, etc.

In the embodiment of the disclosure, the first lamp bead and the second lamp bead can be LED lamp beads.

In an embodiment of the present disclosure, the material of the first and second connection portions may be a solderable conductive material, such as metal tin. For example, the thickness of the first and second connection portions may be 5 to 20 μm.

In some embodiments of the present disclosure, the second slot segments are divided into third slot segments and fourth slot segments, the length of the third slot segments is smaller than that of the fourth slot segments, the third slot segments are arranged in an array, so that the third slot segments in each row form a second slot group, a fourth slot segment is disposed between adjacent second slot groups, and two ends of each fourth slot segment are respectively connected to end portions of the adjacent second slot groups through second connection portions. In this embodiment, the arrangement of the second grooves and the second groove segments therein can be referred to as the arrangement of the first grooves and the first groove segments therein in fig. 4A, wherein the third type groove segments and the fourth type groove segments in this embodiment correspond to the first type groove segments and the second type groove segments in the embodiment shown in fig. 4A, respectively.

In some embodiments of the disclosure, the second slot segments are arranged in an array such that the second slot segments of each row form a second slot group, and two ends of the second slot group are respectively connected to end portions of adjacent second slot groups through the first connection portions. In this embodiment, the arrangement of the second grooves and the second groove segments therein can be referred to as the arrangement of the first grooves and the first groove segments therein in fig. 5, wherein the third groove segments in this embodiment correspond to the first groove segments in the embodiment shown in fig. 5.

In the light-emitting module provided by some embodiments of the present disclosure, an orthographic projection of the second lamp bead on the surface where the substrate is located and an orthographic projection of the first lamp bead on the surface where the substrate is located coincide. For example, as shown in fig. 6, the first lamp bead 311 and the second lamp bead 321 are disposed in an overlapping manner. Thus, the second lamp bead 321 is not arranged to reduce the overall light transmittance of the light emitting module, which is beneficial to the application of the light emitting module to the transparent display field.

In the light-emitting module provided by at least one embodiment of the present disclosure, an orthographic projection of the second lamp bead on the surface where the substrate is located between gaps of orthographic projections of the first lamp bead on the surface where the substrate is located. The light of second lamp pearl can see through the clearance outgoing of first lamp pearl to make the light distribution of luminescent film group outgoing even. For example, as shown in fig. 7, the first beads 311 and the second beads 321 are arranged in a staggered manner, so that direct light (the light is generally perpendicular to the surface of the substrate) of the second beads 321 can be emitted from the gaps of the first beads 311, the emission amount of the light shielded by the first beads 311 is reduced, and accordingly, the light emitting brightness of the light emitting module 10 is increased.

In at least one embodiment of the present disclosure, a light emitting module is provided, in which a substrate is a transparent substrate. So, can make the light of second lamp pearl outgoing can see through the base plate outgoing to as the auxiliary light source of first lamp pearl, thereby increase light-emitting module's light-emitting luminance.

For example, the first and second grooves are both grid-shaped grooves so that the first and second signal lines are both grid-shaped structures. Preferably, the grid density of the first connecting portion of the first groove is greater than that of other areas, and the unit shape of the grid is triangular, multi-deformation, honeycomb, random grid and the like, so that the conductive performance is better.

For example, under the condition that the substrate is a transparent substrate, the first groove and the second groove are grid-shaped grooves so that the first signal line and the second signal line are in a grid-shaped structure, so that the first signal line and the second signal line are integrally transparent, and the light transmittance of the substrate is improved to improve the light brightness.

For example, when the first and second signal lines (or the sub-signal lines included therein) are prepared, a mesh structure may be formed in a full layer, and then the mesh structure may be divided to form the first and second signal lines. For example, in the case where the first and second signal lines are formed in the grooves, the grooves may be designed in a lattice-like structure such that the first and second signal lines formed in the grooves assume a lattice shape.

It should be noted that, when the grid structure is divided, the first and second signal lines (or the grooves of the signal lines) may be obtained by only disconnecting the grid lines, that is, residual grid structures may remain between adjacent first signal lines and between adjacent second signal lines, and the residual grid structures do not participate in the formation of elements such as signal lines, so as to serve as dummy regions, and the residual grid structures may make the light transmittance of the whole substrate uniform, thereby improving the uniformity of the light emitted from the substrate.

For example, as shown in fig. 4A and 4E, in the design process of the first signal line 211, the whole mesh structure shown in fig. 4E may be first disposed, and then the mesh structure may be divided along the lines P1 and P2, the mesh lines of the mesh structure are disconnected at the lines P1 and P2, the portion of the mesh structure between the lines P1 and P2 is the first signal line 211, and the portions of the mesh structure outside the lines P1 and P2 are dummy portions. For example, in the case where the first signal lines 211 are received in the first grooves, as shown in fig. 4E, the first grooves are substantially identical to the grid lines receiving the grid structure, and accordingly, the grid lines of the dummy portion are also received by the corresponding first grooves. Note that the structure shown in fig. 4E can be applied to the case where the first signal line 211 includes a plurality of first sub-signal lines.

In the embodiments of the present disclosure, the cross-sectional shapes of the first and second grooves may be rectangular or inverted trapezoidal. For example, in the case where the cross-sectional shape is an inverted trapezoid, the side walls of the first and second grooves are inclined (non-parallel and non-perpendicular) compared to the bottom, and the bottom of the trapezoid is located on the side of the top facing away from the substrate. For example, the included angle between the side wall and the bottom of the first groove and the included angle between the side wall and the bottom of the second groove are 90-120 degrees.

In the embodiment of the disclosure, an aspect ratio (width is a dimension of the groove along a direction perpendicular to an extending direction of the groove and parallel to a surface of the substrate) of the first groove and/or the second groove may be greater than or equal to 2.5, wherein the width may be in a range of 4 to 40 micrometers, and the depth may be in a range of 10 to 100 micrometers, for example, 20 micrometers. So, through setting up first, second signal line in first, second recess, first, second recess have great aspect ratio to effectively reduced manufacturing cost and promoted the stability of circuit long-term use. The depth-to-width ratio of more than or equal to 2.5 is adopted, the depth of the groove can be more than or equal to 20 microns, so that the impedance of the circuit is very low (the square resistance can reach 2-8 m omega/□), and in addition, the multilayer design of the first through hole and the second through hole can be combined, so that the conductive performance is better, and the feasibility of the large-area high-density lamp bead array design can be ensured. In addition, the first and second signal lines formed in the first and second grooves can use a non-substrate or flexible substrate (such as PET), so that the light emitting module is transparent and flexible, and can be conveniently used for transparent display, such as outdoor advertisement, and the like, the overall thickness of the light emitting module can be reduced, and the application range is wider.

In an embodiment of the present disclosure, the thickness of the first and second signal lines filled in the first and second grooves may be less than or equal to the depth of the first and second grooves. For example, the thickness of the first and second signal lines may be 18 to 20 μm.

In the embodiment of the disclosure, the size of the first and second through holes may be 50 to 300 micrometers, such as 100, 150, 200, 250 micrometers, and the like.

In the embodiment of the disclosure, the distance between the adjacent first lamp beads and/or the distance between the adjacent second lamp beads can be designed according to the requirements of the actual process, for example, the distance can be 200-2000 micrometers.

In the embodiment of the present disclosure, in the case of ensuring that the first signal line and the second signal line are conductive, the material of the first signal line and the second signal line is not further limited, and for example, the material may be a metal or a metal alloy of gold, silver, copper, iron, nickel, tin, or the like.

For example, in the embodiment of this disclosure, the one side that deviates from the base plate of second lamp pearl can set up the reflection stratum to guarantee that the light of second lamp pearl outgoing can all reflect to first lamp pearl, in order to improve light-emitting module's light-emitting luminance.

For example, in the embodiment of the disclosure, an optical film may be disposed on a side of the first lamp bead, the side facing away from the substrate, the optical film may include a light homogenizing sheet, a diffusing sheet, and the like, and the optical film may make light distribution uniform and may straighten the light (convert the light into a linear light beam, for example, the overall transmission direction of the linear light beam is substantially perpendicular to the surface of the substrate).

At least one embodiment of the present disclosure provides a display device, which includes the light emitting module in any one of the above embodiments. It should be noted that, in the display device, the light emitting module can directly display an image or serve as a light source of a device for displaying an image.

For example, in some embodiments of the present disclosure, the first lamp bead (or the first lamp bead and the second lamp bead) is configured to emit color light. In the embodiments, the first lamp beads can serve as sub-pixels of the display device, a plurality of sub-pixels can be combined into one pixel unit (which can be called as a large pixel or a display unit), and in each pixel unit, different first lamp beads are arranged to emit light rays with different colors, so that the pixel unit can emit light rays with various colors, and the display device has a color display function. For example, the light-emitting module adopts a flexible transparent substrate, and the formed display device is a transparent flexible display device, can be arranged on transparent glass such as a window and the like, adapts to the shape of the glass, is transparent when not powered, has a display function when powered, and is used for displaying curtains, advertisements and the like.

For example, in the display device provided in some embodiments of the present disclosure, the display device further includes a display layer and a light-homogenizing plate, the display layer and the light-emitting module are stacked, and the light-homogenizing plate is located between the light-emitting module and the display layer, so that light emitted from the light-emitting module passes through the light-homogenizing plate and then enters the display layer. The display layer is a structure including pixels to have a display function. For example, the display layer may control light emitted from the light emitting module to realize display, for example, the display layer includes a liquid crystal layer to realize display, in which case the display layer may be referred to as a liquid crystal display panel or a liquid crystal display module, and the light emitting module serves as a light source module of the liquid crystal display panel, and the light source module may serve as a front light source or a backlight source (backlight module); or, the display layer may also be a panel that is excited by light emitted from the light emitting module to perform display, for example, the display layer may be a quantum dot display panel, each pixel region of the display layer is provided with a quantum dot, the light emitted from the light emitting module is short-wavelength light, and is excited by the short-wavelength light, and the quantum dot may emit light in a specific wavelength range, and further different types of quantum dots are provided, so that the display layer emits light of different colors. Next, the structure of the display device of the present disclosure will be described by taking an example in which the display layer includes a liquid crystal layer.

Illustratively, as shown in fig. 8, the light emitting module 10 is located on the backlight side of the display layer 20, thereby serving as a backlight module of the display layer 20. The display layer 20 may be a liquid crystal display layer, for example. In these embodiments, the light emitting module 10 is a direct type backlight module. For example, the display device further comprises a light homogenizing plate 30, and the light emitting module 10 is arranged facing to the main surface of the light homogenizing plate 30 and is positioned on the side of the light homogenizing plate 30, which is far away from the display layer 20. For example, the light uniformizing plate 30 may include an optical film such as a diffusion film or a prism film to make the light emitted from the light emitting module 10 disperse uniformly and exit straightly. For example, the display layer 20 may specifically include a box structure formed by an array substrate and an opposite substrate, the liquid crystal layer is encapsulated between the array substrate and the opposite substrate, the opposite substrate is provided with elements such as a color film and a polarizer (which may be set or not), and the polarizer is provided between the array substrate and the light emitting module. In the case of the above structure, the further design of the display layer 20 can refer to the related design of the panel structure (not including the light source module structure) of the liquid crystal display, which is not described herein again.

In the embodiment of the disclosure, the display layer may be any panel structure that requires a backlight or a front light source (in this case, the display layer may be a reflective display layer of an additional light source), and is not limited to be a liquid crystal display layer, and reference may be made to various display panels that require an additional light source, which is not limited herein.

In the embodiments of the present disclosure, the display device may be any product or component having a display function, such as a billboard, a vending machine, a television, a digital camera, a mobile phone, a watch, a tablet computer, a notebook computer, and a navigator.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, etc. made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A light emitting module, comprising:

the substrate comprises a substrate, a first structural layer positioned on the substrate and a first groove positioned in the first structural layer, wherein the first groove is positioned on one side of the first structural layer, which faces away from the substrate;

the first driving circuit layer comprises at least one first signal line positioned in the first groove; and

at least one first luminous unit group is located one side that is provided with of base plate the first drive circuit layer, and include at least one first lamp pearl, first lamp pearl is established ties and is in on the first signal line.

2. The lighting module according to claim 1,

the first structural layer comprises a plurality of first sub-structural layers which are arranged in a stacked mode, and each first sub-structural layer is provided with a first sub-groove;

the first signal line comprises a plurality of first sub-signal lines respectively positioned in the first sub-grooves, and a first through hole is formed in the first sub-structure layer, so that the plurality of first sub-signal lines are connected in series or in parallel through the first through hole.

3. The lighting module of claim 1, wherein the first recess comprises a plurality of first groove segments arranged at intervals, and the lighting module further comprises:

a plurality of first connection portions on the first structural layer and between adjacent first slot segments, each of the first connection portions including a first portion and a second portion respectively connected to a first signal line in the adjacent first slot segments;

wherein the first portion and the second portion are spaced from each other, and the first lamp bead is connected between the first portion and the second portion.

4. The lighting module according to claim 3,

the first groove sections are divided into first groove sections and second groove sections, the length of the first groove sections is smaller than that of the second groove sections, the first groove sections are arranged in an array mode, so that the first groove sections in each row form a first groove group, the second groove sections are arranged between the adjacent first groove groups, and two ends of the second groove sections are respectively connected with the end portions of the adjacent first groove groups through the first connecting portions; or

The first groove sections are arranged in an array mode, so that the first groove sections of each row form a first groove group, and two ends of each first groove group are respectively connected with the end portions of the adjacent first groove groups through the first connecting portions.

5. The lighting module according to any one of claims 3 to 4, further comprising:

the second driving circuit layer is positioned on one side of the substrate, which is far away from the first driving circuit layer, and comprises at least one second signal wire;

the substrate is provided with at least one second through hole, and the first signal line and the second signal line are connected through the second through hole.

6. The illumination module of claim 5, wherein the substrate further comprises:

a second structural layer on a side of the substrate facing away from the first structural layer;

wherein a surface of the second structure facing away from the substrate is provided with at least one second groove in which the second signal line is located, an

7. The lighting module according to claim 6,

the second structural layer comprises a plurality of second sub-structural layers which are arranged in a stacked mode, and each second sub-structural layer is provided with a second sub-groove;

the second signal line comprises a plurality of second sub-signal lines respectively positioned in the second sub-grooves, and a third through hole is formed in the second sub-structure layer, so that the plurality of second sub-signal lines are connected in series or in parallel through the third through holes.

8. The illumination module of claim 6, further comprising:

and the at least one second light emitting unit group is positioned on one side of the substrate, which is provided with the second driving circuit layer, and comprises at least one second lamp bead which is connected in series on the second signal line.

9. The lighting module of claim 8, wherein the second recess comprises a plurality of second groove segments arranged at intervals, and the lighting module further comprises:

a plurality of second connection portions on the second structural layer and between adjacent second slot segments, each of the second connection portions including a third portion and a fourth portion respectively connected to a second signal line in the adjacent second slot segment;

the third portion and the fourth portion are spaced from each other, and the second lamp bead is connected between the third portion and the fourth portion.

10. The lighting module according to claim 9,

the second groove sections are divided into third groove sections and fourth groove sections, the length of the third groove sections is smaller than that of the fourth groove sections, the third groove sections are arranged in an array mode, so that the third groove sections in each row form a second groove group, one fourth groove section is arranged between every two adjacent second groove groups, and two ends of each fourth groove section are respectively connected with the end portions of the adjacent second groove groups through second connecting portions; or

The second groove sections are arranged in an array mode, so that the second groove sections of each row form a second groove group, and two ends of each second groove group are respectively connected with the end portions of the adjacent second groove groups through the first connecting portions.

11. The lighting module according to claim 8,

the orthographic projection of the second lamp beads on the surface of the substrate is superposed with the orthographic projection of the first lamp beads on the surface of the substrate; or

The orthographic projection of the second lamp beads on the surface of the substrate is positioned between the gaps of the orthographic projection of the first lamp beads on the surface of the substrate.

12. The lighting module according to claim 8,

the substrate is a transparent substrate, and the first groove and the second groove are grid-shaped grooves so that the first signal line and the second signal line are in a grid-shaped structure.

13. A display device comprising the light-emitting module according to any one of claims 1 to 12.

14. The display device according to claim 13,

a first lamp bead in the light-emitting module is set to emit colored light.

15. The display device according to claim 13, further comprising:

a light homogenizing plate; and

the display layer is overlapped with the dodging plate;

the light emitting module is configured to enable emergent light rays to pass through the light homogenizing plate and then to be emitted into the display layer.