Backlight module and display device

Abstract

The invention discloses a backlight module and a display device. The backlight module comprises a plurality of glass-based light bars and an assembling layer, and each glass-based light bar comprises a glass substrate and a light-emitting element; the assembling layer is arranged on the surface, close to the light-emitting element, of the glass substrate and fixed to the glass substrate. Wherein the assembling layer is of a self-supporting structure. According to the display panel, the splicing layer is arranged on the surface, close to the light-emitting element, of the glass substrate, so that the glass-based light bars are supported, meanwhile, the splicing seams between the multiple spliced glass-based light bars can be covered with the splicing layer, the splicing seams cannot be seen from the front face of the display panel, and the seamless splicing effect is achieved. Meanwhile, a plurality of glass-based lamp strips can be spliced to form a large-size lamp panel, so that the utilization rate of the bare glass substrate can be improved, and meanwhile, the yield loss of the lamp panel can be reduced; and the manufacturing process is simple.

Description

Technical Field

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

[0002] With the continuous expansion of the panel industry, the industry competition is becoming increasingly fierce. How to seize the cost advantage has become an important factor in maintaining a solid market position; therefore, improving the utilization rate of glass has become the key point to reduce costs. In related technologies, many glass substrates will have glass left over after the board is cut, which will result in a considerable amount of glass material waste, increase production costs, and reduce manufacturing efficiency. When there are a large number of lamp beads on the light board, such as mini LED (Mini Light Emitting Diode) or micro LED (Micro Light Emitting Diode), the yield of the light board is extremely high. If one lamp bead is abnormal, it will affect the entire light board, so this problem needs to be balanced. Summary of the invention

[0003] In view of this, the present application provides a backlight module and a display device to solve the problems of glass waste and low lamp board yield in the prior art.

[0004] In order to solve the above technical problems, the first technical solution provided in the present application is: to provide a backlight module, including: a plurality of glass-based light strips and an assembling layer, each of the glass-based light strips including a glass substrate and a light-emitting element; the assembling layer is arranged on the surface of the glass substrate close to the light-emitting element and is fixed to the glass substrate; wherein the assembling layer is a self-supporting structure.

[0005] In one embodiment, the assembly layer includes: a first substrate layer, a second substrate layer, and a first conductive circuit layer arranged relatively to each other; wherein the first conductive circuit layer includes a first electrode and a second electrode, and the first electrode and the second electrode are electrically connected to the light-emitting element respectively.

[0006] In one embodiment, the assembly layer has a through hole, and the light-emitting element is exposed through the through hole; wherein the first electrode and the second electrode are electrically connected to the corresponding electrodes of the light-emitting element through the through holes respectively; or, the assembly layer has a groove, and part of the second substrate layer serves as the bottom wall of the groove and covers the light-emitting element; wherein the second substrate layer is made of light-transmitting material; or, the light-emitting element is bonded to the glass substrate, and the electrode pair of the light-emitting element is arranged on the side of the light-emitting element away from the glass substrate, and is electrically connected to the first electrode and the second electrode one by one; wherein the light-emitting element emits light toward the glass substrate side.

[0007] In one embodiment, the assembly layer includes a first substrate layer, a second substrate layer and a first conductive circuit layer arranged between the first substrate layer and the second substrate layer; the first conductive circuit layer includes a first electrode; a second conductive circuit layer and an insulating layer covering the second conductive circuit layer are arranged on the glass substrate; the second conductive circuit layer includes a second electrode; the light-emitting element is a vertical structure, with a first contact electrode on the top and a second contact electrode on the bottom; the first contact electrode is electrically connected to the first electrode, and the second contact electrode is electrically connected to the second electrode, so that the first conductive circuit layer and the second conductive circuit layer cooperate to drive the light-emitting element.

[0008] In one embodiment, the first substrate layer has a first opening to expose the first electrode; the insulating layer has a second opening to expose the second electrode; the first contact electrode and the first electrode, and the second contact electrode and the second electrode are electrically connected through a conductive agent; or, the first substrate layer and the conductive circuit layer have a first opening, the second substrate layer has a second opening connected to the first opening, and the first opening and the second opening expose the light-emitting element; the size of the second opening is larger than the size of the first opening to expose the side of the first electrode away from the first substrate layer; the first contact electrode and the exposed part of the first electrode are overlapped by a conductive agent to achieve electrical connection, and the second contact electrode and the second electrode are electrically connected through a conductive agent.

[0009] In one embodiment, the plurality of light-emitting elements of each of the glass-based light strips are arranged in a row, and the plurality of light-emitting elements of the plurality of glass-based light strips are arranged in multiple rows and columns; the number of the first conductive circuit layers is multiple, and each of the first conductive circuit layers also includes a first driving circuit electrically connected to each of the first electrodes, and each of the first electrodes is connected to the light-emitting elements in the same row through the first contact electrode; the second conductive circuit layer also includes a second driving circuit electrically connected to the second electrode, and a first connecting electrode and a second connecting electrode arranged at intervals, and the second electrodes are connected to the light-emitting elements in the same column to independently control each of the light-emitting elements; wherein the light-emitting elements are electrically connected to the first connecting electrode and the second connecting electrode, respectively, and the second connecting electrode extends to one side of the light-emitting elements; the first connecting electrode is electrically connected to the second driving circuit; the insulating layer has a plurality of openings, each of the openings partially exposing a second connecting electrode; each of the first driving circuits is electrically connected to the first connecting electrode of the light-emitting elements in the same row through the openings.

[0010] In one embodiment, a second conductive circuit layer and an insulating layer covering the second conductive circuit layer are disposed on the glass substrate; the second conductive circuit layer includes a first electrode and a second electrode; and the light-emitting element is electrically connected to the first electrode and the second electrode respectively.

[0011] In one embodiment, the assembling layer has a plurality of openings, and each of the light-emitting elements is exposed through one of the openings and protrudes from the opening; a reflective layer is also provided on a surface of the assembling layer away from the glass substrate.

[0012] In one embodiment, the backlight module further includes: a supporting layer, which is arranged on a side of the glass substrate away from the light-emitting element, and the supporting layer includes a plurality of supporting plates; wherein the plurality of supporting plates are arranged in parallel, and the supporting plates and the glass substrate are arranged in the same direction; a first splicing seam is formed between adjacent glass-based light strips; a second splicing seam is formed between adjacent supporting plates; wherein the first splicing seam and the second splicing seam are staggered along the thickness direction of the backlight module; or, the plurality of glass substrates are arranged in sequence along a first direction, and a first splicing seam is formed between adjacent glass-based light strips; the supporting plate is arranged along a direction intersecting the first direction, and the supporting plate at least covers a portion of the first splicing seam; wherein the first direction is the arrangement direction of the plurality of glass substrates.

[0013] In order to solve the above technical problems, the second technical solution provided in the present application is: to provide a display device, comprising: a display panel and a backlight module, the backlight module is electrically connected to the display panel and is used to provide a light source for the display panel; wherein the backlight module is the backlight module described in any one of the above items.

[0014] Beneficial effects of the present application: Different from the prior art, the backlight module of the present application includes: multiple glass-based light strips and an assembling layer, each glass-based light strip includes a glass substrate and a light-emitting element; the assembling layer is arranged on the surface of the glass substrate close to the light-emitting element, and is fixed to the glass substrate; wherein the assembling layer is a self-supporting structure. The present application supports the glass-based light strips by arranging the assembling layer on the surface of the glass substrate close to the light-emitting element, and at the same time, the assembling layer can cover the splicing seams between the multiple spliced ​​glass-based light strips, so that the splicing seams cannot be seen from the front of the display panel, achieving a "seamless splicing" effect. At the same time, multiple glass-based light strips can be spliced ​​to form a large-sized light board, which can not only improve the utilization rate of the bare glass substrate, but also reduce the yield loss of the light board; and the manufacturing process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a top view structural schematic diagram of the backlight module provided by the present application;

[0017] Figure 2 yes Figure 1 The schematic diagram of the cross-sectional structure in the AA direction is provided;

[0018] Figure 3 is a schematic diagram of the side structure of the backlight module provided in the first embodiment of the present application;

[0019] Figure 4 is a side view structural diagram of a backlight module provided in the second embodiment of the present application;

[0020] Figure 5 is a side view structural diagram of a backlight module provided in the third embodiment of the present application;

[0021] Figure 6 This is a schematic side view of a first structure of a backlight module provided in the fourth embodiment of the present application;

[0022] Figure 7 is a schematic side view of a second structure of a backlight module provided in the fourth embodiment of the present application;

[0023] Figure 8 is a schematic top view of a third structure of a backlight module provided in the fourth embodiment of the present application;

[0024] Fig. 9 is a schematic diagram of a top view of the structure of a backlight module provided in the fifth embodiment of the present application;

[0025] Figure 10-1 This application Fig. 9 A schematic cross-sectional view along B'-B' provided in;

[0026] Figure 10-2 This application Fig. 9 A schematic cross-sectional view along CC provided in;

[0027] Fig.11 is a side view structural diagram of a backlight module provided in a sixth embodiment of the present application;

[0028] Fig.12 is a side view structural diagram of a backlight module provided in the seventh embodiment of the present application;

[0029] Fig.13 This application Figure 1 A side view structural diagram of a backlight module along a first direction is provided, wherein the structure of a first supporting layer is shown;

[0030] Fig.14 This application Figure 1 A side view structural diagram of the backlight module along the second direction is provided, wherein the structure of the first supporting layer is shown;

[0031] Fig.15 This application Figure 1 A side view structural diagram of a backlight module along a first direction is provided, wherein the structure of a second supporting layer is shown;

[0032] Fig.16 This application Figure 1 A side view structural diagram of a backlight module along a second direction is provided, wherein the structure of a second supporting layer is shown;

[0033] Fig.17 is a schematic structural diagram of a display device provided by an embodiment of the present application;

[0034] Fig.18 It is a schematic diagram of cutting a bare glass substrate provided in this application.

[0035] Description of reference numerals:

[0036] 200, display device; 201, display panel; 2011, counter substrate; 2012, array substrate; 2013, liquid crystal layer; 2014, liquid crystal molecules; 100, backlight module; 10, assembly layer; 101, through hole; 102, groove; 1021, side wall; 1022, bottom wall; 103, first opening; 11, first substrate layer; 12, first conductive circuit layer; 121, first electrode; 122, second electrode; 123, first driving circuit; 13, second substrate layer; 131, third opening; 14, via hole; 15, conductive agent; 151, first connecting portion; 152, second connecting portion; 16, first conducting portion; 1 7. Second conductive portion; 30. Adhesive layer; 20. Glass-based light strip; 21. Glass substrate; 22. Light-emitting element; 221. Positive electrode; 2211. First contact electrode; 222. Negative electrode; 2221. Second contact electrode; 23. First joint seam; 30. Adhesive layer; 40. Second conductive circuit layer; 41. Second drive circuit; 42. First connecting electrode; 43. Second connecting electrode; 44. Drive circuit board; 50. Insulating layer; 51. Second opening; 60. Support layer; 61. Support plate; 611. Second joint seam; 70. Reflective layer; 300. Bare glass substrate; 301. Liquid crystal panel; 302. Light board substrate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical workers in the field without making creative work are within the scope of protection of this application.

[0038] The terms "first", "second" and "first" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can expressly or implicitly include at least one of the features. All directional indications (such as up, down, left, right, front, back ...) in the embodiments of the present application are only used to explain the relative position relationship, movement conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] During the research process of this application, it was found that: Fig.18 As shown, the layout of liquid crystal panels 301 of various sizes is arranged according to the size of the bare glass substrate 300. Generally, the larger the size of the product, the higher the proportion of bare glass substrate produced. Therefore, the utilization of the bare glass substrate can improve the utilization rate of the bare glass substrate 300.

[0041] Large-sized direct-down light boards are mainly made of smaller-sized light boards. When there are a large number of lamp beads on the light board, such as mini LED or micro LED, the yield of the light board is extremely high. If one lamp bead is abnormal, the entire light board will be affected. Therefore, this application has found that splicing a smaller number of light boards can better balance this problem.

[0042] In order to solve the above problems, the present application provides a backlight module and a display device.

[0043] See also Figure 1 to Figure 2 , Figure 1 It is a top view structural schematic diagram of the backlight module provided by the present application; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure in the AA direction is provided.

[0044] The backlight module 100 provided in the present application includes a plurality of glass-based light strips 20 and an assembly layer 10, each glass-based light strip 20 including a glass substrate 21 and a light-emitting element 22; it can be understood that in order to facilitate the splicing of a plurality of glass-based light strips 20, the glass-based light strip 20 can be a strip-shaped light strip. Among them, the light-emitting element 22 can be LED, mini LED or micro LED, etc. It can be understood that the spliced ​​plurality of glass-based light strips 20 can be used for a direct-down backlight module 100 or a side-entry backlight module 100, and the present application does not limit this. At the same time, a smaller-sized glass substrate 21 can be cut synchronously during the process of cutting the liquid crystal panel 301, and a driving circuit and an insulating layer 50 can be prepared on the bare glass substrate 300 through the same process, thereby saving processes. After the cutting process, the glass substrate 21 of the required light strip is obtained, and then the production of the strip-shaped glass-based light strip 20 is completed through processes such as SMT (Surface Mount Technology).

[0045] The assembling layer 10 is arranged on the surface of the glass substrate 21 close to the light-emitting element 22, and is fixed to the glass substrate 21, for example, by bonding. Different from the common practice in the related art that the assembling layer 10 is arranged on the surface of the glass substrate 21 away from the light-emitting element 22, the present application arranges the assembling layer 10 on the surface of the glass substrate 21 close to the light-emitting element 22 to cover the splicing seams of multiple glass-based light strips 20, so that the splicing seams cannot be seen from the front of the display panel 201, thereby achieving a "seamless splicing" display effect. According to the size and wiring requirements of the multiple glass-based light strips 20 after splicing, the assembling layer 10 is correspondingly provided with a driving circuit and a conducting electrode (see the following content for details) so as to be electrically connected to the strip-shaped glass-based light strips 20 one by one.

[0046] In the present application, the assembly layer 10 is a self-supporting structure, so it can be produced separately and assembled directly after production, thereby improving the production effect; at the same time, it is also convenient for the assembly layer 10 to be maintained and replaced separately in the later stage. The self-supporting structure can be understood as a structure that can be independently formed and does not rely on other structures for support. For example, the splicing plates and splicing films arranged on the surface of the glass substrate 21 can be independently formed and exist independently, which is a self-supporting structure; while the paints and coatings coated on the surface of the glass substrate 21 cannot be independently formed and exist independently, and can only be coated or attached to the surface of other objects, which is a non-self-supporting structure.

[0047] See also Figures 3 to 5 , Figure 3 is a schematic diagram of the side structure of the backlight module provided in the first embodiment of the present application; Figure 4 is a side view structural diagram of a backlight module provided in the second embodiment of the present application; Figure 5 It is a side view structural diagram of the backlight module provided in the third embodiment of the present application.

[0048] In one embodiment, the assembly layer 10 includes a first substrate layer 11, a second substrate layer 13 and a first conductive circuit layer 12 disposed between the first substrate layer 11 and the second substrate layer 13; the first conductive circuit layer 12 is sandwiched between the first substrate layer 11 and the second substrate layer 13, and is used to connect and drive a plurality of strip-shaped glass-based light strips 20. The first substrate layer 11 and the second substrate layer 13 can be made of polyimide or similar resin materials; the first conductive circuit layer 12 can be made of copper, aluminum or similar conductive materials.

[0049] Further, the first conductive circuit layer 12 may include a first electrode 121 and a second electrode 122, and the first electrode 121 and the second electrode 122 are electrically connected to the light-emitting element 22, respectively. Among them, the first electrode 121 may be a positive electrode, and the second electrode 122 may be a negative electrode. It can be understood that the light-emitting element 22 also has a positive electrode 221 and a negative electrode 222 corresponding to the first electrode 121 and the second electrode 122, so that the first electrode 121 is electrically connected to the positive electrode 221 of the light-emitting element 22, and the second electrode 122 is electrically connected to the negative electrode 222 of the light-emitting element 22. The light-emitting element 22 can be turned on and driven by the first conductive circuit layer 12 of the assembly layer 10, so the driving circuit may not be provided on the glass substrate 21.

[0050] In a first embodiment:

[0051] like Figure 3As shown, the assembly layer 10 has a through hole 101, and the light-emitting element 22 is exposed through the through hole 101, wherein the first electrode 121 and the second electrode 122 are respectively electrically connected to the corresponding electrode of the light-emitting element 22 through the via hole 14; in this embodiment, the top of the light-emitting element 22 can be lower than the setting height of the first substrate layer 11, so that the top of the light-emitting element 22 does not contact the first electrode 121 and the second electrode 122; and the corresponding electrode of the light-emitting element 22 is respectively electrically connected to the first electrode 121 and the second electrode 122 through the via hole 14. The via hole 14 is opened in the first substrate layer 11, and a conductive agent 15 is filled in the via hole 14, such as conductive glue or solder, metal, etc., so as to realize that the first electrode 121 and the second electrode 122 are respectively electrically connected to the corresponding electrode of the light-emitting element 22.

[0052] Furthermore, the light emitting element 22 may be fixed around the first substrate layer 11 and the glass substrate 21 at a gap between the first substrate layer 11 and the glass substrate 21 through an adhesive layer 30 .

[0053] In the second embodiment:

[0054] like Figure 4 As shown, the assembly layer 10 has a groove 102, the side wall 1021 of the groove 102 is formed by the first substrate layer 11 and the first conductive circuit layer 12, part of the second substrate layer 13 is used as the bottom wall 1022 of the groove 102, and the bottom wall 1022 covers the light emitting element 22; wherein, the second substrate layer 13 is made of a light-transmitting material, so that the light emitting element 22 can transmit light through the second substrate layer 13. In this embodiment, the light emitting element 22 is covered by the second substrate layer 13, so that the light emitting element 22 can be protected, and the encapsulation layer (not shown) can be omitted, saving preparation processes and materials, and improving production effects; at the same time, the second substrate layer 13 of the light-transmitting material can also ensure the light emitting effect of the light emitting element 22.

[0055] At the same time, similar to the first embodiment, the top of the light-emitting element 22 in this embodiment can also be lower than the setting height of the first substrate layer 11, so that the top of the light-emitting element 22 does not contact the first electrode 121 and the second electrode 122; and the corresponding electrode of the light-emitting element 22 is electrically connected to the first electrode 121 and the second electrode 122 through the via hole 14. Among them, the via hole 14 can be opened in the first substrate layer 11, and the conductive agent 15, such as conductive glue or solder, metal, etc., is filled in the via hole 14 to achieve the electrical connection between the first electrode 121 and the second electrode 122 and the corresponding electrode of the light-emitting element 22. Further, the light-emitting element 22 can be fixed by an adhesive layer 30 around the gap between the first substrate layer 11 and the glass substrate 21.

[0056] It can be understood that in the first embodiment and the second embodiment of the assembly layer 10, the light emitting element 22 emits light from the top.

[0057] In the third embodiment:

[0058] like Figure 5 As shown, the light emitting element 22 is arranged in contact with the glass substrate 21, and the positive electrode 221 and the negative electrode 222 of the light emitting element 22 can be arranged on the side of the light emitting element 22 away from the glass substrate 21. That is, the light emitting element 22 in this embodiment is a flip-chip structure, and the light emitting element 22 emits light toward one side of the glass substrate 21, that is, the bottom. When in use, the glass substrate 21 is arranged toward the light guide plate (not shown). And the positive electrode 221 and the negative electrode 222 of the light emitting element 22 can be electrically connected to the first electrode 121 and the second electrode 122 in a one-to-one correspondence. In this embodiment, the positive electrode 221 of the light emitting element 22 and the first electrode 121, and the negative electrode 222 and the second electrode 122 are all electrically connected through the via 14.

[0059] At the same time, the light emitting element 22 may be fixed around the first substrate layer 11 and the glass substrate 21 by an adhesive layer 30 .

[0060] See also Figures 6 to 8 , Figure 6 This is a schematic side view of a first structure of a backlight module provided in the fourth embodiment of the present application; Figure 7 is a schematic side view of a second structure of a backlight module provided in the fourth embodiment of the present application; Figure 8 It is a schematic top view of a third structure of a backlight module provided in the fourth embodiment of the present application.

[0061] In the fourth embodiment:

[0062] The first conductive circuit layer 12 includes a first electrode 121 . A second conductive circuit layer 40 and an insulating layer 50 covering the second conductive circuit layer 40 are disposed on the glass substrate 21 . The second conductive circuit layer 40 includes a second electrode 122 .

[0063] In this embodiment, the light emitting element 22 is a vertical structure, and the positive electrode 221 of the light emitting element 22 is arranged at the top of the light emitting element 22 as a first contact electrode 2211; the negative electrode 222 is arranged at the bottom of the light emitting element 22 as a second contact electrode 2221. The first contact electrode 2211 is electrically connected to the first electrode 121, and the second contact electrode 2221 is electrically connected to the second electrode 122, so that the first conductive circuit layer 12 and the second conductive circuit layer 40 cooperate to drive the light emitting element 22.

[0064] Further, such as Figure 6As shown, in the first structure of the backlight module 100 of this embodiment, the first substrate layer 11 may have a first opening 103 to expose the first electrode 121; the insulating layer 50 has a second opening 51 to expose the second electrode 122; it can be understood that the size of the first opening 103 and the second opening 51 can be the same, and the opening positions are correspondingly matched, and the first opening 103 and the second opening 51 are both opened in the thickness direction of the backlight module 100 corresponding to the light-emitting element 22. The first contact electrode 2211 and the first electrode 121 can be electrically connected through the conductive agent 15, and the second contact electrode 2221 and the second electrode 122 can be electrically connected through the conductive agent 15; wherein the conductive agent 15 can be conductive glue or solder, etc. At the same time, the light-emitting element 22 can also be fixed by the adhesive layer 30 at the gap between the first substrate layer 11 and the insulating layer 50 around it.

[0065] Or, if Figure 7 As shown, in the second structure of the backlight module 100 of the present embodiment, the first substrate layer 11 and the conductive circuit layer have a first opening 103, that is, the first opening 103 penetrates the first substrate layer 11 and the conductive circuit layer; the second substrate layer 13 has a third opening 131 connected to the first opening 103, and the first opening 103 and the third opening 131 expose the light-emitting element 22; the size of the third opening 131 is larger than the size of the first opening 103, so as to expose the side of the first electrode 121 away from the first substrate layer 11, thereby increasing the contact area between the conductive agent 15 and the first electrode 121 and improving the electrical connection effect.

[0066] Specifically, the first contact electrode 2211 and the exposed portion of the first electrode 121 are overlapped by the conductive agent 15 to achieve electrical connection, and the second contact electrode 2221 and the second electrode 122 are electrically connected by the conductive agent 15. Specifically, the conductive agent 15 can form a first connection portion 151 and a second connection portion 152 at both ends in contact with the first electrode 121, and the first connection portion 151 and the second connection portion 152 are overlapped with the first electrode 121 respectively to achieve electrical connection between the first contact electrode 2211 and the first electrode 121.

[0067] In the third structure of the backlight module 100 of this embodiment, each light emitting element 22 can be controlled individually.

[0068] like Figure 8As shown, specifically, the multiple light-emitting elements 22 of each glass-based light bar 20 are arranged in a row, and the multiple light-emitting elements 22 of multiple glass-based light bars 20 are arranged in multiple rows and columns. For example, multiple light-emitting elements 22 are arranged in an array, and 5 to 10 rows of light-emitting elements 22 can be arranged at one time, thereby saving processes and improving preparation efficiency. There are multiple first conductive circuit layers 12, and each first conductive circuit layer 12 also includes a first driving circuit 123 electrically connected to each first electrode 121, and each first electrode 121 is connected to the same row of light-emitting elements 22 through a first contact electrode 2211.

[0069] The second conductive circuit layer 40 also includes a second driving circuit 41 electrically connected to the second electrode 122, and a first connecting electrode 42 and a second connecting electrode 43 arranged at intervals. The second electrode 122 is connected to the same column of light-emitting elements 22 to independently control each light-emitting element 22; each light-emitting element 22 can be finely controlled to improve control accuracy and display effect, and it is also convenient for timely replacement or repair of damaged light-emitting elements 22 at a later time.

[0070] Furthermore, the light-emitting element 22 is electrically connected to the first connection electrode 42 and the second connection electrode 43, respectively, and the second connection electrode 43 extends to one side of the light-emitting element 22; the first connection electrode 42 is electrically connected to the second drive circuit 41; the first connection electrode 42 can be a positive electrode, and the second connection electrode 43 can be a negative electrode. A plurality of second drive circuits 41 arranged in multiple columns can be connected as a whole. The second drive circuit 41 and the first drive circuit 123 can be cross-arranged (for example, vertically arranged) in the thickness direction of the backlight module 100, and are insulated and isolated by the insulating layer 50.

[0071] In one embodiment, the insulating layer 50 may have a plurality of openings (not shown), each of which partially exposes a second connection electrode 43; each first driving circuit 123 is electrically connected to the first connection electrode 42 of the light-emitting element 22 in the same row through the opening. Each opening may be filled with a conductive material to conduct the first driving circuit 123 with each first connection electrode 42, and the conductive material may be a conductive glue or metal.

[0072] like Figure 8As shown, for example, first, the circuit of the glass substrate 21 can be provided with a negative driving electrode for the edge of the short side, and a positive driving electrode is correspondingly provided next to each welding point of the light-emitting element 22, and an opening is provided in the corresponding insulating layer 50 to expose the electrode, and then the glass-based light bar 20 is spliced ​​and fixed in the above-mentioned manner. For the electrodes exposed next to the welding points of the light-emitting elements 22, an external strip-shaped driving circuit board 44 is used for series connection. Specifically, the external strip-shaped driving circuit board 44 can be connected by welding or attaching a strip-shaped flexible circuit. In order to reduce the impact on the display effect, the electrodes next to the welding points of the light-emitting elements 22 can also be provided on the back of the strip-shaped light bar. In this way, a one-lamp-one-drive control method can be implemented, and the series and parallel driving schemes of other glass-based light bars 20 can also be set, adjusted and adapted in this way, and the present application does not limit this.

[0073] Through the above arrangement, each light emitting element 22 can be easily controlled individually, thereby improving the control accuracy. At the same time, the arrangement of individual control can facilitate the replacement and repair of damaged individual light emitting elements 22 at a later stage.

[0074] See also Figure 9 to Figure 10-2 , Fig. 9 is a schematic diagram of a top view of the structure of a backlight module provided in the fifth embodiment of the present application; Figure 10-1 This application Fig. 9 A schematic cross-sectional view along B'-B' provided in; Figure 10-2 This application Fig. 9 Schematic diagram of the cross-sectional structure along CC provided in.

[0075] In the fifth embodiment:

[0076] like Fig. 9 , Figure 10-1 as well as Figure 10-2 As shown, a second conductive circuit layer 40 and an insulating layer 50 covering the second conductive circuit layer 40 are provided on the glass substrate 21; the second conductive circuit layer 40 includes a first electrode 121 and a second electrode 122 for driving; and the light emitting element 22 is electrically connected to the first electrode 121 and the second electrode 122 respectively.

[0077] Specifically, the second conductive circuit layer 40 extends to one end of the glass substrate 21 and is partially exposed to form a driving electrode (not shown), which includes a first electrode 121 and a second electrode 122 ; the light-emitting element 22 is disposed on the insulating layer 50 and electrically connected to the second conductive circuit layer 40 .

[0078] For example, the positive electrodes 221 of the multiple glass-based light bars 20 can be connected to the first electrode 121 through a first conductive connector (not shown), and the negative electrodes 222 of the multiple glass-based light bars 20 can be connected to the second electrode 122 through a second conductive connector (not shown), so that the multiple glass-based light bars 20 can be connected in parallel or in series. For example, the first electrode 121 and the second electrode 122 can be two parallel strip electrodes, so that the positive electrodes 221 of the multiple glass-based light bars 20 are connected to the first electrode 121 through the first conductive connector, and the negative electrodes 222 of the multiple glass-based light bars 20 are connected to the second electrode 122 through the second conductive connector. Among them, the first electrode 121 can be a positive electrode, and the second electrode 122 can be a negative electrode.

[0079] like Figure 9 to Figure 10-2 As shown, a plurality of glass-based light bars 20 are connected in series, so that a plurality of light-emitting elements 22 can be turned on or off at the same time, which is convenient for controlling the plurality of light-emitting elements 22. Specifically, a plurality of glass-based light bars 20 can be connected in series with a plurality of light-emitting elements 22 of each light bar, and the negative electrode of the previous light-emitting element 22 is the positive electrode of the next light-emitting element 22, wherein adjacent glass-based light bars 20 can be connected in parallel or in series; or all light-emitting elements 22 of a plurality of glass-based light bars 20 are connected in series, wherein adjacent glass-based light bars 20 are connected in series. A plurality of glass-based light bars 20 are connected in series, so that a plurality of light-emitting elements 22 can be turned on or off at the same time, which is convenient for unified control of the plurality of light-emitting elements 22. Specifically, as Figure 10-1 As shown, adjacent glass-based light bars 20 can be connected in series by connecting each first electrode 121 to the first conductive circuit layer 12. Specifically, a hole (not shown) is opened on the insulating layer 50, and then a conductive material is filled in the hole to form the first conductive part 16 and the second conductive part 17. One end of the first conductive part 16 and the second conductive part 17 are electrically connected to the first electrode 121, respectively, and the other end is connected to the first conductive circuit layer 12, so as to realize the series connection between adjacent glass-based light bars 20.

[0080] See also Figure 11 to Figure 12 , Fig.11 is a side view structural diagram of a backlight module provided in a sixth embodiment of the present application; Fig.12 It is a side view structural diagram of the backlight module provided in the seventh embodiment of the present application.

[0081] In the sixth embodiment:

[0082] The assembly layer 10 may have a plurality of first openings 103, and each light emitting element 22 is exposed through a first opening 103 and protrudes from the first opening 103; wherein the first opening 103 may be preset after the assembly layer 10 is prepared, for example, the opening position of the first opening 103 corresponds to the position where the light emitting element 22 is set, so that the light emitting element 22 can be accommodated and exposed when the light emitting element 22 is installed. At the same time, opening the first opening 103 on the assembly layer 10 in advance can facilitate alignment when multiple glass-based light strips 20 are assembled.

[0083] Furthermore, a reflective layer 70 is also provided on the surface of the assembly layer 10 away from the glass substrate 21, which is used to reflect the light of the light-emitting element 22 to improve the light-emitting efficiency. When the light-emitting element 22 emits light from the top, the reflective layer 70 can be provided on the side of the second substrate layer 13 away from the first conductive circuit layer 12; when the light-emitting element 22 emits light from the bottom, the reflective layer 70 can be provided on the side of the first substrate layer 11 away from the first conductive circuit layer 12. The reflective layer 70 can be formed by directly coating a reflective material on the second substrate layer 13, or a single reflective layer 70 can be provided, and the present application does not limit this.

[0084] In the seventh embodiment:

[0085] like Fig.12 As shown, the assembly layer 10 can be further arranged on the back of the glass-based light bar 20, wherein the assembly layer 10 extending to the back of the glass-based light bar 20 may not be provided with the first conductive circuit layer 12. That is, the first substrate layer 11 and the second substrate layer 13 extend to the side and back of the glass substrate 21, thereby improving the fixing effect of the assembly layer 10 on the glass-based light bar 20.

[0086] See also Figures 13 to 16 , Fig.13 This application Figure 1 A side view structural diagram of a backlight module along a first direction is provided, wherein the structure of a first supporting layer is shown; Fig.14 This application Figure 1 A side view structural diagram of the backlight module along the second direction is provided, wherein the structure of the first supporting layer is shown; Fig.15 This application Figure 1 A side view structural diagram of a backlight module along a first direction is provided, wherein the structure of a second supporting layer is shown; Fig.16 This application Figure 1 A side view structural diagram of a backlight module along a second direction is provided, wherein the structure of a second supporting layer is shown.

[0087] In one embodiment, if Figures 13 to 16As shown, the backlight module 100 may further include a support layer 60, which is disposed on a side of the glass substrate 21 away from the light-emitting element 22, and the support layer 60 includes a plurality of support plates 61. Considering the strength of the glass-based light bar 20 when the thin film assembly layer 10 is used, a reinforcement structure (support layer 60) may be added to the back joint of the glass substrate 21 of the strip-shaped glass-based light bar 20 for reinforcement. Since the bare glass substrate 300 cut during the production process of the display panel 201 is originally a separable double-layer glass structure of the same size, and only one layer of the bare glass substrate 300 is used to make the glass substrate 21, the other layer of the bare glass substrate 300 will still be wasted. Therefore, it is preferred to use the other layer of the bare glass substrate 300 as the support layer 60 of the reinforcement structure.

[0088] The support layer 60 may include but is not limited to the following two structures and configurations:

[0089] The first support layer 60:

[0090] like Figure 13 to Figure 14 As shown, a plurality of support plates 61 are arranged in parallel, and the support plates 61 and the glass substrate 21 are arranged in the same direction; a first joint seam 23 is formed between adjacent glass-based light strips 20; a second joint seam 611 is formed between adjacent support plates 61; wherein the first joint seam 23 and the second joint seam 611 are staggered along the thickness direction of the backlight module 100. That is, as Fig.14 As shown, since the two layers of bare glass substrate 300 have the same size, the support plate 61 can be attached to the first splicing seam 23 on the back of multiple spliced ​​glass-based light strips 20 in a direction that is exactly the same as the splicing direction of the glass-based light strip 20, and at the same time, the first splicing seam 23 and the second splicing seam 611 are staggered along the thickness direction of the backlight module 100 to improve the strength of the large-size light panel (not shown) formed by splicing.

[0091] The second supporting layer 60:

[0092] like Figure 1 , Figure 15 to Figure 16As shown, a plurality of glass substrates 21 are sequentially arranged along a first direction, wherein the first direction is the arrangement direction of the plurality of glass substrates 21. A first joint seam 23 is formed between adjacent glass-based light strips 20; the support plate 61 is arranged along a second direction, which is a direction intersecting the first direction, and the support plate 61 at least covers part of the first joint seam 23, thereby reducing the workload of attaching the support plate 61. In other words, the support plate 61 can be attached to the cross direction of the strip-shaped glass-based light strip 20, for example, in a vertical direction or an inclined direction of the first direction. The number of attached support plates 61 can be set to one row or more as needed. For example, when the size of the light strip in the splicing direction is greater than the length of a single light strip, the support plates 61 need to be arranged in two rows or more, and the joints of the support plates 61 in different rows need to be staggered. For another example, when the size of the light strip in the splicing direction is greater than twice or more than the length of the light strip, the support plates 61 can be arranged in succession in the same row. In this way, the strength of the light bar of the thin film assembly layer 10 can be improved, and the utilization rate of the bare glass substrate 300 can be further improved.

[0093] In order to solve the above problems, the present application also provides a display device 200.

[0094] See also Fig.17 , Fig.17 is a schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0095] In one embodiment, if Fig.17 As shown, the display device 200 may include a display panel 201 and a backlight module 100; the backlight module 100 is electrically connected to the display panel 201 and is used to provide a light source for the display panel 201; wherein the backlight module 100 is any of the backlight modules 100 described above and will not be described in detail here.

[0096] In one embodiment, the display panel 201 may be a liquid crystal display panel 201 (LCD, Liquid Crystal Display), an LED display panel 201 or an OLED display panel 201. The liquid crystal display panel 201 may include a counter substrate 2011, an array substrate 2012 and a liquid crystal layer 2013 disposed between the counter substrate 2011 and the array substrate 2012. The liquid crystal layer 2013 may include a plurality of liquid crystal molecules 2014. The counter substrate 2011 may specifically be a color film substrate. The backlight module 100 includes a plurality of glass-based light strips 20 and an assembly layer 10 disposed on the surface of the glass substrate 21 close to the light-emitting element 22. The assembly layer 10 is a self-supporting structure, so it can be produced separately and assembled directly after production is completed, thereby improving the production effect. The assembly layer 10 may include a first substrate layer 11, a second substrate layer 13 and a first conductive circuit layer 12 disposed between the first substrate layer 11 and the second substrate layer 13; the first conductive circuit layer 12 is sandwiched between the first substrate layer 11 and the second substrate layer 13, and is used to connect and drive a plurality of strip-shaped glass-based light strips 20. The first substrate layer 11 and the second substrate layer 13 may be made of polyimide or similar resin materials; the first conductive circuit layer 12 may be made of copper, aluminum or similar conductive materials. Please refer to the above content for the specific structure, which will not be repeated here.

[0097] The backlight module disclosed in the present application includes: a plurality of glass-based light strips and an assembling layer, each glass-based light strip includes a glass substrate and a light-emitting element; the assembling layer is arranged on the surface of the glass substrate close to the light-emitting element and is fixed to the glass substrate; wherein the assembling layer is a self-supporting structure. The present application supports the glass-based light strips by arranging the assembling layer on the surface of the glass substrate close to the light-emitting element. At the same time, the assembling layer can cover the splicing seams between the plurality of spliced ​​glass-based light strips, so that the splicing seams cannot be seen from the front of the display panel, thereby achieving a "seamless splicing" effect. At the same time, a plurality of glass-based light strips can be spliced ​​to form a large-sized light board, which can not only improve the utilization rate of the bare glass substrate, but also reduce the yield loss of the light board; and the manufacturing process is simple.

[0098] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A backlight module, characterized in that: include: A plurality of glass-based light bars, each of which comprises a glass substrate and a light-emitting element; The assembling layer is arranged on the surface of the glass substrate close to the light-emitting element and is fixed to the glass substrate; wherein the assembling layer is a self-supporting structure.

2. The backlight module according to claim 1, characterized in that: The assembly layer comprises: A first substrate layer and a second substrate layer arranged opposite to each other, and a first conductive circuit layer arranged between the first substrate layer and the second substrate layer; The first conductive circuit layer includes a first electrode and a second electrode, and the first electrode and the second electrode are electrically connected to the light-emitting element respectively.

3. The backlight module according to claim 2, characterized in that: The assembly layer has a through hole, and the light-emitting element is exposed through the through hole; wherein the first electrode and the second electrode are electrically connected to the corresponding electrodes of the light-emitting element through the through hole respectively; or, The assembly layer has a groove, and part of the second substrate layer serves as the bottom wall of the groove and covers the light-emitting element; wherein the second substrate layer is made of a light-transmitting material; or, The light-emitting element is bonded to the glass substrate, and the electrode pair of the light-emitting element is arranged on the side of the light-emitting element away from the glass substrate, and is electrically connected to the first electrode and the second electrode in a one-to-one correspondence; wherein the light-emitting element emits light toward the glass substrate.

4. The backlight module according to claim 1, characterized in that: The assembly layer includes a first substrate layer, a second substrate layer and a first conductive circuit layer arranged between the first substrate layer and the second substrate layer; the first conductive circuit layer includes a first electrode; A second conductive circuit layer and an insulating layer covering the second conductive circuit layer are arranged on the glass substrate; the second conductive circuit layer includes a second electrode; The light-emitting element is a vertical structure with a first contact electrode on the top and a second contact electrode on the bottom; the first contact electrode is electrically connected to the first electrode, and the second contact electrode is electrically connected to the second electrode, so that the first conductive circuit layer and the second conductive circuit layer cooperate to drive the light-emitting element.

5. The backlight module according to claim 4, characterized in that: The first substrate layer has a first opening to expose the first electrode; the insulating layer has a second opening to expose the second electrode; the first contact electrode and the first electrode, and the second contact electrode and the second electrode are electrically connected through a conductive agent; or, The first substrate layer and the conductive circuit layer have a first opening, the second substrate layer has a second opening connected to the first opening, and the first opening and the second opening expose the light emitting element; The size of the second opening is larger than that of the first opening, so as to expose a side of the first electrode away from the first substrate layer; The first contact electrode is overlapped with the exposed portion of the first electrode through a conductive agent to achieve electrical connection, and the second contact electrode is electrically connected with the second electrode through a conductive agent.

6. The backlight module according to claim 4, characterized in that: The multiple light-emitting elements of each glass-based light bar are arranged in a row, and the multiple light-emitting elements of multiple glass-based light bars are arranged in multiple rows and columns; the number of the first conductive circuit layers is multiple, and each of the first conductive circuit layers further includes a first driving circuit electrically connected to each of the first electrodes, and each of the first electrodes is connected to the light-emitting elements in the same row through the first contact electrodes; The second conductive circuit layer further includes a second driving circuit electrically connected to the second electrode, and a first connecting electrode and a second connecting electrode arranged at intervals, wherein the second electrode is connected to the light emitting elements in the same column to independently control each of the light emitting elements; wherein the light emitting elements are electrically connected to the first connecting electrode and the second connecting electrode respectively, and the second connecting electrode extends to one side of the light emitting elements; and the first connecting electrode is electrically connected to the second driving circuit; The insulating layer has a plurality of openings, each of which partially exposes a second connecting electrode; each of the first driving circuits is electrically connected to the first connecting electrodes of the light-emitting elements in the same row through the openings.

7. The backlight module according to claim 1, characterized in that: A second conductive circuit layer and an insulating layer covering the second conductive circuit layer are arranged on the glass substrate; the second conductive circuit layer includes a first electrode and a second electrode; and the light emitting element is electrically connected to the first electrode and the second electrode respectively.

8. The backlight module according to claim 1, characterized in that: The assembly layer has a plurality of openings, and each of the light-emitting elements is exposed through one of the openings and protrudes from the opening; A reflective layer is also provided on the surface of the assembly layer away from the glass substrate.

9. The backlight module according to any one of claims 1 to 8, characterized in that: Also includes: A support layer is arranged on a side of the glass substrate away from the light-emitting element, and the support layer includes a plurality of support plates; wherein: A plurality of the support plates are arranged in parallel, and the support plates and the glass substrate are arranged in the same direction; a first joint seam is formed between adjacent glass-based light strips; a second joint seam is formed between adjacent support plates; wherein the first joint seam and the second joint seam are staggered along the thickness direction of the backlight module; or, The multiple glass substrates are arranged in sequence along a first direction, and a first joint seam is formed between adjacent glass-based light strips; the support plate is arranged along a direction intersecting the first direction, and the support plate at least covers a portion of the first joint seam; wherein the first direction is the arrangement direction of the multiple glass substrates.

10. A display device, characterized in that: include: Display panel; A backlight module is electrically connected to the display panel and is used to provide a light source for the display panel; wherein the backlight module is the backlight module according to any one of claims 1 to 9.

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