Backlight module and display device

Abstract

The utility model discloses a backlight module and a display device, and the backlight module comprises a back plate which comprises a back plate inner surface and a back plate back surface which are oppositely arranged; the first light source assembly is arranged on the inner surface of the back plate; the first light source connector is arranged on the inner surface of the back plate and is connected with the first light source assembly; the light guide plate is arranged on the inner surface of the back plate, and a first notch is formed in the position, corresponding to the first light source connector, of the light guide plate so as to avoid the first light source connector; a first connecting through hole penetrating through the back plate is formed in the position, corresponding to the first light source connector, of the back plate. According to the backlight module, the first light source connector can be located in the backlight module, the risk that the first light source connector is collided and damaged can be avoided, the maximum thickness of the backlight module can be reduced, and the attractiveness of the backlight module and the attractiveness of the display device comprising the backlight module are improved.

Description

Technical Field

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

[0002] In related technologies, such as Figure 1 As shown, the light source connector in the backlight module used for connecting with the backlight source is generally arranged on the north back side of the back panel and higher than the height of the back side of the back panel, which makes the light source connector vulnerable to impact by foreign objects and causes damage to the light source connector. Although the opening material at the opening in the back panel used for connecting the light source connector and the backlight source can be bent to protect the light source connector through the bending structure, it is limited by the amount of opening material at the opening and can only protect the two sides of the light source connector, and the other two sides of the light source connector are still at risk of being damaged by impact. At the same time, this arrangement of the light source connector will cause light leakage at the opening on the back panel, and it is not easy to shield it with materials such as light-shielding tape, and foreign objects can easily enter the backlight module.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] The present disclosure aims to at least to some extent solve the technical problems that the light source connector is easily damaged and the backlight module is easily leaked and foreign objects enter due to the light source connector being arranged on the back of the back plate. To this end, the present disclosure provides a backlight module and a display device.

[0005] A backlight module provided by an embodiment of the present disclosure comprises: a back panel, comprising an inner surface of the back panel and a back surface of the back panel which are arranged opposite to each other; a first light source assembly, wherein the first light source assembly is arranged on the inner surface of the back panel; a first light source connector, wherein the first light source connector is arranged on the inner surface of the back panel and is connected to the first light source assembly; and a light guide plate, wherein the light guide plate is arranged on the inner surface of the back panel, and a first notch is provided at a position of the light guide plate corresponding to the first light source connector to avoid the first light source connector; wherein a first connecting through hole which penetrates the back panel is provided at a position of the back panel corresponding to the first light source connector.

[0006] In some embodiments, the first light source assembly is disposed on the inner surface of the back panel along a first direction, the first light source assembly is located at the end of the inner surface of the back panel in a second direction, and the first light source connector is located at the end of the first light source assembly in the first direction; wherein the second direction is perpendicular to the first direction.

[0007] In some embodiments, a first expansion gap is formed between the first notch and the light source connector in the first direction; and a second expansion gap is formed between the first notch and the light source connector in the second direction.

[0008] In some embodiments, the backlight module also includes: a plurality of flexible limit blocks, which are arranged on the inner surface of the back panel and abut against the end of the light guide plate, at least one of the flexible limit blocks abuts against the end of the light guide plate in the second direction away from the first light source connector; at least one of the flexible limit blocks abuts against the end of the light guide plate in the first direction away from the first light source connector.

[0009] In some embodiments, the flexible stopper is in a corner shape, and the flexible stopper is disposed at a corner of the inner surface of the back plate so that the flexible stopper abuts against two adjacent ends of the light guide plate.

[0010] In some embodiments, at least two of the flexible limit blocks are respectively in one-to-one contact with two opposite ends of the light guide plate in the first direction; at least two of the flexible limit blocks are respectively in one-to-one contact with two opposite ends of the light guide plate in the second direction.

[0011] In some embodiments, the backlight module also includes: a second light source assembly, the second light source assembly is arranged on the inner surface of the back panel along the first direction, the second light source assembly and the first light source assembly are located at opposite ends of the inner surface of the back panel in the second direction; and a second light source connector, the second light source connector is arranged on the inner surface of the back panel and connected to the second light source assembly, the second light source connector is located at the end of the second light source assembly in the first direction, and the second light source connector and the first light source connector are respectively located at opposite corners of the inner surface of the back panel; wherein a second notch is provided at a position of the light guide plate corresponding to the second light source connector to avoid the second light source connector; and a second connecting through hole is provided at a position of the back panel corresponding to the second light source connector that passes through the inner surface of the back panel and the back side of the back panel.

[0012] In some embodiments, a third expansion gap is formed between the second notch and the light source connector in the first direction; and a fourth expansion gap is formed between the second notch and the light source connector in the second direction.

[0013] In some embodiments, a chip groove is provided on the back side of the back plate and is recessed toward the inner surface of the back plate. The chip groove is used to accommodate a chip, and an edge of the chip groove has an edge spacing distance from the chip, and a bottom spacing distance from the chip has a bottom spacing distance from the chip.

[0014] In some embodiments, the back panel further includes a back panel folded edge arranged around the inner surface of the back panel.

[0015] In some embodiments, the backlight module also includes: a middle frame, the middle frame includes a bearing portion and a side frame portion perpendicular to the bearing portion, the side frame portion is connected to the edge of the bearing portion and is arranged around the bearing portion, the middle frame is buckled on the back panel so that the side frame portion is engaged with the folded edge of the back panel, and the bearing portion extends to the side of the light guide plate away from the inner surface of the back panel.

[0016] In some embodiments, a binding flexible circuit board avoidance groove is provided on a side of the side frame portion away from the folded edge of the back plate and at a position corresponding to the binding flexible circuit board of the display module.

[0017] In some embodiments, a locking avoidance groove recessed toward the folded edge of the back panel is provided at a position of the side frame portion away from the folded edge of the back panel and corresponding to the locking groove of the frame.

[0018] In some embodiments, the back panel folded edge is provided with a snap portion protruding toward the side frame portion, a snap through hole is provided at a position of the side frame portion corresponding to the snap portion, and a snap thinning groove is provided on a side of the side frame portion away from the back panel folded edge and located around the snap through hole.

[0019] In some embodiments, the back panel folded edges opposite to each other in the first direction are respectively provided with first film material hanging ears, and the back panel folded edges opposite to each other in the second direction are respectively provided with second film material hanging ears, and the backlight module also includes an optical film material, and the optical film material is hung on the first film material hanging ear and / or the second film material hanging ear, and the optical film material is located on the side of the light guide plate away from the inner surface of the back panel.

[0020] A display device is provided by an embodiment of the present disclosure, and the display device includes: the above-mentioned backlight module; a display module; a frame, the frame including an upper frame and a side frame perpendicular to the upper frame, the side frame is connected to the edge of the upper frame and is arranged around the upper frame, the frame is buckled on the backlight module so that the display module is clamped between the upper frame and the backlight module; and a front frame, the front frame including an upper front frame and a side front frame perpendicular to the upper front frame, the side front frame is connected to the edge of the upper front frame and is arranged around the upper front frame, and the front frame is buckled on the frame so that the upper front frame covers the upper frame.

[0021] In some embodiments, an edge of the upper front frame away from the side front frame is provided with a shielding protrusion extending toward the display module.

[0022] In some embodiments, the frame further includes: a third buffer pad, and the third buffer pad is arranged between the upper frame and the display module.

[0023] In some embodiments, a buffer gap is provided between the shielding protrusion and the display module, and the buffer gap is less than or equal to a thickness of the third buffer pad.

[0024] The embodiments of the present disclosure have at least the following beneficial effects:

[0025] The backlight module proposed in the embodiment of the present disclosure has a first light source connector for connecting to the first light source assembly arranged on the inner surface of the back panel, so that the first light source connector can be located inside the backlight module, which can avoid the risk of the first light source connector being damaged by collision, and can also reduce the maximum thickness of the backlight module, thereby increasing the aesthetics of the backlight module and the display device including the backlight module; since the first light source connector is arranged on the inner surface of the back panel, the first connecting through hole is used to connect the first light source connector to the structure such as the system on chip and / or power supply of the display device, the first connecting through hole can be used to pass the wiring harness, and there is no need to set a bending structure on the back side of the back panel at the first connecting through hole to protect the first light source connector or the wiring harness, so the first connecting through hole can be easily shielded on the back side of the back panel with materials such as shading tape, which can not only avoid light leakage from the back panel at the first connecting through hole, but also prevent foreign matter from entering the backlight module, thereby improving the stability of the operation of the backlight module. and service life; since the first light source connector is arranged on the inner surface of the back panel, there is no need to set a bending structure at the first connecting through hole on the back side of the back panel to protect the first light source connector, which can reduce the bending structure at the first connecting through hole, thereby reducing the cost of the back panel mold, thereby reducing the overall cost of the backlight module to a certain extent; since the first light source connector is arranged on the inner surface of the back panel, the light guide plate is provided with a first notch at the position corresponding to the first light source connector to avoid the first light source connector, and the first light source connector can limit the light guide plate to effectively prevent the light guide plate from shaking. Therefore, the first light source connector can replace the relevant block structure, and realize the effect of one structural component playing two roles to replace two structural components, thereby reducing the number of structural components in the backlight module, thereby reducing the design cost and assembly cost of the backlight module to a certain extent, and at the same time, the first notch can also achieve the purpose of anti-fool, thereby preventing assembly errors of the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram showing a structure in which a light source connector in a backlight module in the related art is arranged on the back side of a back plate;

[0028] Figure 2 Shows Figure 1 Schematic diagram of the structure of the middle rubber stopper;

[0029] Figure 3 A cross-sectional view of a backlight module of the related art is shown;

[0030] Figure 4 An exploded view of a display device in an embodiment of the present disclosure is shown;

[0031] Figure 5 Shows Figure 4 a rear view of the display device;

[0032] Figure 6 Shows Figure 5 Magnified view of the first light source connector

[0033] Figure 7 A front view of a backlight module in an embodiment of the present disclosure is shown;

[0034] Figure 8 Shows Figure 7 A schematic diagram of the structure of the light guide plate of the backlight module;

[0035] Fig. 9 Shows Figure 7 A cross-sectional view of a first light source connector of a middle backlight module in a first direction;

[0036] Fig.10 Shows Figure 7 A cross-sectional view of the first light source connector of the middle backlight module in the second direction;

[0037] Fig.11 A front view of a backlight module in another embodiment of the present disclosure is shown;

[0038] Fig.12 Shows Fig.11 A schematic diagram of the structure of the light guide plate of the backlight module;

[0039] Fig.13 Shows Figure 4 A cross-sectional view of a frame of the display device in a first direction;

[0040] Fig.14 Shows Figure 4 A cross-sectional view of a frame of a display device (front frame not shown) in a first direction;

[0041] Fig.15 Shows Fig.14A schematic diagram of a partial three-dimensional structure of a middle frame of a middle display device;

[0042] Fig.16 Shows Figure 4 Schematic diagram of the assembly process of the frame, middle frame and back plate of the central display device;

[0043] Fig.17 Shows Fig.16 Schematic diagram of the structure after the frame, middle frame and back panel of the central display device are assembled.

[0044] Reference numerals:

[0045] 10. Light source connector; 20. Opening; 30. Bending structure; 40. Rubber stopper; 41. Limiting part; 50. Straight-edge front frame; 100. Back plate; 110. Inner surface of back plate; 120. Back surface of back plate; 121. Chip groove; 130. First connecting through hole; 140. Back plate folding edge; 141. Buckle part; 150. Display module circuit board; 160. Connecting flexible circuit board; 161. Single-sided tape; 170. System on chip; 180. Circuit board cover; 190. Rivet column; 200. First light source assembly; 3 00, first light source connector; 400, light guide plate; 410, first notch; 420, second notch; 500, flexible limit stopper; 600, second light source assembly; 700, second light source connector; 800, middle frame; 810, bearing portion; 820, side frame portion; 821, flexible circuit board binding avoidance groove; 822, locking avoidance groove; 823, buckle thinning groove; 830, first buffer pad; 840, second buffer pad; 900, optical film material; 910, upper diffusion film; 920, upper polarizing film; 930, lower polarizing film; 940, lower diffusion film; 1000, reflective film; 1100, display panel; 1110, binding flexible circuit board; 1120, chip; 1200, frame; 1210, upper frame; 1220, side frame; 1221, locking groove; 1222, bolt head; 1230, third buffer pad; 1300, front frame; 1310, upper front frame; 1311, shielding protrusion; 1320, side front frame; F1, first direction; F2, second direction; F3, third direction; G1, first direction An expansion gap; G2, a second expansion gap; G3, a buffer gap; C1, a dimension of the first light source connector in the first direction; C2, a dimension of the first light source connector in the second direction; C3, a dimension of the first light source connector in the second direction; L1, a top difference distance; L2, a bottom difference distance; L3, a distance between the shielding protrusion and the display area; L4, a distance between the shielding protrusion and the end of the display panel; L5, an edge spacing distance; L6, a bottom spacing distance; L7, a distance between the chip groove and the edge of the back panel; AA, a display area. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0047] In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0048] For the sake of convenience and simplicity, in the backlight module of the present disclosure, the light guide plate 400 is used as a reference, the first direction F1 is a direction parallel to the light guide plate 400 and provided with a backlight source; the second direction F2 is a direction parallel to the light guide plate 400 and perpendicular to the first direction F1; the third direction F3 is a direction perpendicular to the light guide plate 400, and at the same time, the third direction F3 is also perpendicular to the first direction F1 and the second direction F2, that is, the thickness direction of the backlight module. The present disclosure is described below in conjunction with the accompanying drawings and with reference to specific embodiments:

[0049] like Figure 1 As shown, a schematic diagram of the structure in which the light source connector 10 is arranged on the back side 120 of the back panel in the related art is shown. The light source connector 10 used for connecting with the backlight source in the backlight module is generally arranged on the back side 120 of the back panel and is higher than the height of the back side 120 of the back panel, which makes the light source connector 10 vulnerable to impact by foreign objects and causes damage to the light source connector 10. Although the opening 20 material at the opening 20 for connecting the light source connector 10 with the backlight source in the back panel 100 can be bent to protect the light source connector 10 through the bending structure 30, it is limited by the amount of the opening 20 material at the opening 20, and only the two sides of the light source connector 10 can be protected, and the other two sides of the light source connector 10 are still at risk of being damaged by impact; at the same time, this arrangement of the light source connector 10 will cause light leakage at the opening 20 on the back panel 100, and it is not easy to use materials such as light-shielding tape to shield it, and foreign objects are easy to enter the interior of the backlight module.

[0050] For example, when the display device is used in scenarios such as sales shelves and elevators, the light source connector 10 connected to the backlight source in the backlight module of the display device is located on the back side of the back panel 100. In usage scenarios with large traffic such as sales shelves and elevators, the light source connector 10 is easily damaged by collision, affecting the normal display and use of the display device.

[0051] In view of the technical problems that the light source connector 10 is easily damaged due to being arranged on the back side 120 of the back plate, the backlight module is easily leaked and foreign objects enter, some embodiments of the present disclosure propose a backlight module, such as Figures 4 to 10 As shown, the backlight module includes a back plate 100, a first light source assembly 200, a first light source connector 300 and a light guide plate 400. The back plate 100 includes a back plate inner surface 110 and a back plate rear surface 120 that are arranged opposite to each other; the first light source assembly 200 is arranged on the back plate inner surface 110; the first light source connector 300 is arranged on the back plate inner surface 110 and connected to the first light source assembly 200; the light guide plate 400 is arranged on the back plate inner surface 110, and a first notch 410 is arranged at a position corresponding to the first light source connector 300 to avoid the first light source connector 300; wherein, a first connecting through hole 130 that penetrates the back plate 100 is arranged at a position corresponding to the first light source connector 300.

[0052] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10As shown, the first light source connector 300 for connecting with the first light source assembly 200 is arranged on the inner surface 110 of the back plate, so that the first light source connector 300 can be located inside the backlight module, which can avoid the risk of the first light source connector 300 being damaged by collision, and can also reduce the maximum thickness of the backlight module, thereby increasing the aesthetics of the backlight module and the display device including the backlight module; because the first light source connector 300 is arranged on the inner surface 110 of the back plate, the first connecting through hole 130 is used to connect the first light source connector 300 with the system on chip 170 (System on chip) of the display device The first connecting through hole 130 can be used to pass the wiring harness, and the back surface 120 of the back panel does not need to be provided with a bending structure 30 at the first connecting through hole 130 to protect the first light source connector 300 or the wiring harness. Therefore, the first connecting through hole 130 can be easily shielded by materials such as a light-shielding tape at the back surface 120 of the back panel, which can prevent the back panel 100 from leaking light at the first connecting through hole 130 and prevent foreign matter from entering the backlight module, thereby improving the stability and service life of the backlight module. Since the first light source connector 300 is arranged on the inner surface 110 of the back panel, the back surface 120 of the back panel does not need to be provided with a bending structure 30 at the first connecting through hole 130 to protect the first light source connector 300, which can reduce the bending structure 30 at the first connecting through hole 130. This can reduce the mold cost of the back panel 100, thereby reducing the overall cost of the backlight module to a certain extent; since the first light source connector 300 is arranged on the inner surface 110 of the back panel, the light guide plate 400 is provided with a first notch 410 at a position corresponding to the first light source connector 300 to avoid the first light source connector 300, and the first light source connector 300 can limit the light guide plate 400 to effectively prevent the light guide plate 400 from shaking. Therefore, the first light source connector 300 can replace the relevant block structure, thereby achieving an effect in which one structural component plays two roles to replace two structural components, thereby reducing the number of structural components in the backlight module, thereby reducing the design cost and assembly cost of the backlight module to a certain extent, and at the same time, the first notch 410 can also achieve the purpose of anti-foolproofing, thereby preventing assembly errors of the light guide plate 400.

[0053] like Figure 2As shown, a schematic diagram of the structure of the rubber stopper 40 in the related art is shown. Since the light source connector 10 is arranged on the back surface 120 of the back plate, a rubber stopper 40 needs to be separately arranged at the position corresponding to the light source connector 10 on the inner surface 110 of the back plate, and the light guide plate 400 is limited by the rubber stopper 40. In order to make the frame 1200 of the backlight module as narrow as possible, the limiting portion 41 of the rubber stopper 40 is generally thin and soft, resulting in the rubber stopper 40 being easily squeezed out of the range of the back plate 100 after being squeezed by the light guide plate 400. After the displacement of the rubber stopper 40, the limiting effect on the light guide plate 400 is lost, resulting in the light guide plate 400 being unable to return to its original position, resulting in uneven brightness of the backlight module.

[0054] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10 As shown, the first light source connector 300 is arranged on the inner surface 110 of the back panel, and the first light source connector 300 will not be displaced when squeezed by the light guide plate 400, that is, the first light source connector 300 limits the light guide plate 400 in a hard limiting manner, which improves the accuracy of the limiting position of the light guide plate 400 and can play a good limiting role on the light guide plate 400, thereby effectively avoiding the defect that the light guide plate 400 cannot be reset, thereby ensuring the brightness uniformity of the backlight module.

[0055] In the backlight module of some embodiments of the present disclosure, the material of the back plate 100 can be selected from metal, plastic or composite material. For example, the material of the back plate 100 can be selected from metal plates such as aluminum alloy plates, magnesium alloy plates, stainless steel plates and galvanized plates, the material of the back plate 100 can also be selected from plastic plates such as engineering plastic plates, polycarbonate (PC) plates and acrylonitrile-styrene-butadiene copolymer (ABS) resin plates, and the material of the back plate 100 can also be selected from composite plates composed of metal and plastic.

[0056] In the backlight module of some embodiments of the present disclosure, the thickness of the back plate 100 may be 0.3 mm to 0.7 mm. For example, the thickness of the back plate 100 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, etc.

[0057] In the backlight module of some embodiments of the present disclosure, optionally, the first light source assembly 200 includes a first backlight source, and the first backlight source can be disposed on the inner surface 110 of the back panel.

[0058] In the backlight module of some embodiments of the present disclosure, optionally, the first light source assembly 200 includes a first backlight source and a first heat sink, and the first backlight source is arranged on the inner surface 110 of the back panel through the first heat sink. The first heat sink can be a metal sheet with thermal conductivity such as an aluminum sheet, for example, the first heat sink can be made of 6063 aluminum extrusion material. The first backlight source is fixed on the first heat sink, and is arranged on the inner surface 110 of the back panel through the first heat sink, while the thermal conductivity of the first heat sink is used to dissipate the heat of the first backlight source.

[0059] In the backlight module of some embodiments of the present disclosure, optionally, the first backlight source may be a light bar, that is, the first backlight source may include a first circuit board and a plurality of first sub-light sources arranged on the first circuit board, and the plurality of first sub-light sources are arranged in a straight line on the first circuit board.

[0060] In the backlight module of some embodiments of the present disclosure, optionally, the first sub-light source may be a light-emitting diode (LED) or an electroluminescent sheet (EL).

[0061] As an optional implementation, Figures 4 to 10 As shown, the back plate 100 further includes a back plate folding edge 140 arranged around the inner surface 110 of the back plate.

[0062] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10 As shown, the back panel folded edge 140 is disposed around the back panel inner surface 110 to form an accommodation space through the back panel folded edge 140 and the back panel inner surface 110 to accommodate various structural components in the backlight module.

[0063] In the backlight module of some embodiments of the present disclosure, optionally, the first backlight source may also be arranged on the back panel folded edge 140 .

[0064] In the backlight module of some embodiments of the present disclosure, Fig. 9 and Fig.10 As shown, the first light source connector 300 can be used for the connection between the first light source assembly 200 and the system on chip 170 of the display device. Since the first light source connector 300 is arranged on the inner surface 110 of the back plate, in order to avoid the first light source connector 300 having an adverse effect on the thickness of the backlight module, the height of the first light source connector 300 in the third direction F3 is less than or equal to the thickness of the back plate 100 in the third direction F3, that is, the first light source connector 300 in the third direction F3 is not easy to exceed the height of the back plate folded edge 140 in the third direction F3.

[0065] In the backlight module of some embodiments of the present disclosure, Fig. 9 and Fig.10As shown, optionally, in the third direction F3, the first light source connector 300 maintains a certain distance from the edge of the back panel folded edge 140 and the inner surface 110 of the back panel. On the one hand, it can prevent the first light source connector 300 from interfering with the assembly of the back panel 100 and other structural parts. On the other hand, it is also convenient for the first light source connector 300 to be connected to the wiring harness. It is also possible to bend the wiring harness after the wiring harness passes through the first connecting through hole 130 so as to facilitate the light shielding and dust-proofing treatment of the first connecting through hole 130 by means of a light shielding tape. For example, the dimension C1 of the first light source connector in the first direction is 4.8mm~11.2mm, the dimension C2 of the first light source connector in the second direction is 1.9mm~4.5mm, and the dimension C3 of the first light source connector in the third direction is 1.8mm~4.2mm. Fig. 9 As shown, in the third direction F3, the distance L1 between the top of the first light source connector 300 and the top of the edge of the back panel folded edge 140 may be 1.8mm~4.2mm, and the distance L2 between the bottom of the first light source connector 300 and the bottom of the back panel inner surface 110 may be 1.2mm~2.8mm.

[0066] In the backlight module of some embodiments of the present disclosure, the light guide plate 400 may be made of polymethyl methacrylate (PMMA) and / or polycarbonate (PC) materials.

[0067] In the backlight module of some embodiments of the present disclosure, the thickness of the light guide plate 400 may be 1.2 mm to 3.2 mm. For example, the thickness of the light guide plate 400 is 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2.0 mm, 21.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3.0 mm, and 3.2 mm.

[0068] In the backlight module of some embodiments of the present disclosure, Fig. 9 and Fig.10As shown, the first connecting through hole 130 is provided at a position corresponding to the back plate 100 and the first light source connector 300. Since the first light source connector 300 is provided on the inner surface 110 of the back plate, the first connecting through hole 130 is used to connect the first light source connector 300 with the system on chip 170 of the display device, and the first connecting through hole 130 is used for the wire harness to pass through, so the orthographic projection of the first connecting through hole 130 on the back plate 100 can be smaller than the orthographic projection of the first light source connector 300 on the back plate 100. On the one hand, the size of the first connecting through hole 130 can be reduced, which is convenient for using a light shielding tape for light shielding and sealing, and reduces the risk of light leakage and foreign matter entering the backlight module; on the other hand, the area of ​​the opening 20 on the back plate 100 can be reduced, and the structural strength of the back plate 100 can be improved. Optionally, the size of the first connecting through hole 130 can be designed according to the thickness of the wire harness and the convenience of assembly, which will not be repeated here.

[0069] In the backlight module of some embodiments of the present disclosure, optionally, the backlight module can be a side-light backlight module, and the light incident surface of the light guide plate 400 is located on the side of the light guide plate 400, adjacent to the light emitting surface of the light guide plate 400. After the light generated by the first light source assembly 200 enters the interior of the light guide plate 400 from the light incident surface of the light guide plate 400, it is totally reflected by the light guide plate 400, and the light is evenly diffused inside the light guide plate 400, and evenly emitted from the light emitting surface.

[0070] As an optional implementation, Figures 4 to 10 As shown, the first light source assembly 200 is arranged on the inner surface 110 of the back panel along the first direction F1, the first light source assembly 200 is located at the end of the inner surface 110 of the back panel in the second direction F2, and the first light source connector 300 is located at the end of the first light source assembly 200 in the first direction F1; wherein the second direction F2 is perpendicular to the first direction F1.

[0071] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10 As shown, the first light source assembly 200 is arranged on the inner surface 110 of the back plate along the first direction F1, and the first light source assembly 200 is located at the end of the inner surface 110 of the back plate in the second direction F2, that is, the first light source assembly 200 is located on the side of the light guide plate 400 in the second direction F2, and light enters from the side of the light guide plate 400, forming a side-lighted backlight module structure. For example, the two sides of the backlight module in the first direction F1 can be regarded as the left side and the right side, respectively, and the two sides of the backlight module in the second direction F2 can be regarded as the sky side and the ground side, respectively, that is, the first light source assembly 200 can be arranged on the sky side or the ground side of the backlight module.

[0072] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10As shown, the first light source connector 300 is located at the end of the first light source assembly 200 in the first direction F1. Since the first light source assembly 200 is located at the end of the inner surface 110 of the back plate in the second direction F2, from the overall view of the back plate 100, the first light source connector 300 is located at the corner of the back plate 100, and the first light source connector 300 occupies a part of the area of ​​the inner surface 110 of the back plate in both the first direction F1 and the second direction F2. Accordingly, in order to make the light guide plate 400 avoid the first light source connector 300, the light guide plate 400 needs to be retracted by a certain distance in both the first direction F1 and the second direction F2 to form a first notch 410. The light guide plate 400 has a portion that can abut against the first light source connector 300 in both the first direction F1 and the second direction F2, so the first light source connector 300 can limit the light guide plate 400 in both the first direction F1 and the second direction F2.

[0073] As an optional implementation, Figures 4 to 10 As shown, a first expansion gap G1 is formed between the first notch 410 and the light source connector 10 in the first direction F1 ; a second expansion gap G2 is formed between the first notch 410 and the light source connector 10 in the second direction F2 .

[0074] In the backlight module of some embodiments of the present disclosure, since the light guide plate 400 is easily expanded when heated, a first expansion gap G1 is provided between the first notch 410 and the light source connector 10 in the first direction F1, and a second expansion gap G2 is provided between the first notch 410 and the light source connector 10 in the second direction F2. The first expansion gap G1 and the second expansion gap G2 are used to reserve a certain space for the expansion of the light guide plate 400 in the first direction F1 and the second direction F2, which can reduce the risk of wrinkles and the like caused by excessive restriction of the first light source connector 300 when the light guide plate 400 expands to a certain extent. The size of the first expansion gap G1 and the size of the second expansion gap G2 can be set according to the expansion deformation amount of the light guide plate 400.

[0075] As an optional implementation, Figures 4 to 10 As shown, the backlight module also includes a plurality of flexible limit blocks 500, which are arranged on the inner surface 110 of the back panel and abut against the end of the light guide plate 400, at least one flexible limit block 500 abuts against the end of the light guide plate 400 in the second direction F2 away from the first light source connector 300; at least one flexible limit block 500 abuts against the end of the light guide plate 400 in the first direction F1 away from the first light source connector 300.

[0076] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10As shown, a flexible limit block 500 is provided on the inner surface 110 of the back panel. By making the flexible limit block 500 abut against the end of the light guide plate 400, it can cooperate with the first light source connector 300 to limit the light guide plate 400, so that the position of the light guide plate 400 on the back panel 100 is relatively fixed, which can avoid defects such as light leakage and uneven brightness caused by the excessive movement range of the light guide plate 400 relative to the back panel 100 to a certain extent. At the same time, by making at least one flexible limit block 500 abut against the end of the light guide plate 400 away from the first light source connector 300 in the second direction F2, and at least one flexible limit block 500 abut against the end of the light guide plate 400 in the first direction F1 away from the first light source connector 300, the two ends of the light guide plate 400 in the first direction F1 can be limited by the first light source connector 300 and the at least one flexible limit block 500 respectively, and the two ends of the light guide plate 400 in the second direction F2 can be limited by the first light source connector 300 and the at least one flexible limit block 500 respectively, so that the light guide plate 400 can be better limited in the first direction F1 and the second direction F2, thereby improving the accuracy and certainty of the position of the light guide plate 400 on the back panel 100, which can improve the brightness uniformity of the backlight module and avoid the occurrence of light leakage defects.

[0077] As an optional implementation, Figures 4 to 10 As shown, the flexible stopper 500 is in a corner shape, and the flexible stopper 500 is disposed at a corner of the inner surface 110 of the back plate so that the flexible stopper 500 abuts against two adjacent ends of the light guide plate 400 .

[0078] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10 As shown, the flexible limit block 500 is in a corner shape, that is, the flexible limit block 500 has two corner portions. When the flexible limit block 500 is arranged at the corner portion of the inner surface 110 of the back panel, the two corner portions of the flexible limit block are respectively abutted against the two end portions adjacent to the light guide plate 400, so that the two ends of the light guide plate 400 can be limited by one flexible limit block 500, and the number of flexible limit blocks 500 can be reduced, thereby reducing the material cost and assembly cost of the flexible limit block 500.

[0079] As an optional implementation, Figures 4 to 10 As shown, at least two flexible limit blocks 500 abut against two opposite ends of the light guide plate 400 in the first direction F1 in one-to-one correspondence; at least two flexible limit blocks 500 abut against two opposite ends of the light guide plate 400 in the second direction F2 in one-to-one correspondence.

[0080] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10As shown, at least two flexible limit blocks 500 are respectively in one-to-one contact with the two opposite ends of the light guide plate 400 in the first direction F1, and at least two flexible limit blocks 500 are respectively in one-to-one contact with the two opposite ends of the light guide plate 400 in the second direction F2, so that the two ends of the light guide plate 400 in the first direction F1 can be softly limited by the flexible limit blocks 500, and the two ends of the light guide plate 400 in the second direction F2 can be softly limited by the flexible limit blocks 500. In other words, the light guide plate 400 can be softly limited at the four ends by the flexible limit blocks 500, and hard limiting can be achieved in the first direction F1 and the second direction F2 by the first light source connector 300. The combination of soft limiting and hard limiting can improve the accuracy of limiting the light guide plate 400, and reserve a certain expansion gap for the expansion and deformation of the light guide plate 400.

[0081] In the backlight module of some embodiments of the present disclosure, Figures 4 to 10 As shown, when the flexible limit block 500 is in a corner shape, in addition to the corner where the first light source connector 300 is set on the inner surface 110 of the back panel, the remaining corners of the inner surface 110 of the back panel are respectively provided with flexible limit blocks 500, and the flexible limit blocks 500 can be used to limit the four ends of the light guide plate 400.

[0082] As an optional implementation, Fig.11 and Fig.12 As shown, the backlight module also includes a second light source component 600 and a second light source connector 700. The second light source component 600 is arranged on the inner surface 110 of the back panel along the first direction F1. The second light source component 600 and the first light source component 200 are located at opposite ends of the inner surface 110 of the back panel in the second direction F2. The second light source connector 700 is arranged on the inner surface 110 of the back panel and is connected to the second light source component 600. The second light source connector 700 is located at the end of the second light source component 600 in the first direction F1. The second light source connector 700 and the first light source connector 300 are respectively located at the diagonals of the inner surface 110 of the back panel. A second notch 420 is provided at a position corresponding to the light guide plate 400 and the second light source connector 700 to avoid the second light source connector 700. A second connecting through hole is provided at a position corresponding to the back panel 100 and the second light source connector 700, which passes through the inner surface 110 of the back panel and the back surface 120 of the back panel.

[0083] In the backlight module of some embodiments of the present disclosure, Fig.11 and Fig.12As shown, the second light source assembly 600 is arranged on the inner surface 110 of the back panel along the first direction F1, and the second light source assembly 600 and the first light source assembly 200 are located at opposite ends of the inner surface 110 of the back panel in the second direction F2, so that the first light source assembly 200 and the second light source assembly 600 are respectively located at opposite ends of the inner surface 110 of the back panel in the second direction F2, that is, the backlight module can achieve double-sided light input, thereby improving the brightness of the backlight module.

[0084] In the backlight module of some embodiments of the present disclosure, optionally, the second light source assembly 600 includes a second backlight source, and the second backlight source can be disposed on the inner surface 110 of the back panel.

[0085] In the backlight module of some embodiments of the present disclosure, optionally, the second light source assembly 600 includes a second backlight source and a second heat sink, and the second backlight source is arranged on the inner surface 110 of the back panel through the second heat sink. The second heat sink can be a metal sheet with thermal conductivity such as an aluminum sheet, for example, the first heat sink can be made of 6063 aluminum extrusion material. The second backlight source is fixed on the second heat sink, and is arranged on the inner surface 110 of the back panel through the second heat sink, while the thermal conductivity of the second heat sink is used to dissipate the heat of the second backlight source. Optionally, the second backlight source can be movably arranged on the inner surface 110 of the back panel through the second heat sink, so that the second backlight source can move in the second direction F2, so as to ensure that the relative distance between the light guide plate 400 and the second backlight source is stable when the light guide plate 400 expands and contracts, and avoid the occurrence of defects such as reduced brightness uniformity and light leakage of the backlight module due to the unstable relative distance between the light guide plate 400 and the second backlight source.

[0086] In the backlight module of some embodiments of the present disclosure, optionally, the second backlight source may be a light bar, that is, the second backlight source may include a second circuit board and a plurality of second sub-light sources arranged on the second circuit board, and the plurality of second sub-light sources are arranged in a straight line on the second circuit board.

[0087] In the backlight module of some embodiments of the present disclosure, optionally, the second sub-light source may be a light-emitting diode (LED) or an electroluminescent sheet (EL).

[0088] In the backlight module of some embodiments of the present disclosure, optionally, the second backlight source may also be disposed on the back panel folded edge 140 .

[0089] In the backlight module of some embodiments of the present disclosure, the second light source connector 700 can be used for the transfer between the second light source assembly 600 and the system on chip 170 of the display device. Since the second light source connector 700 is arranged on the inner surface 110 of the back plate, in order to avoid the second light source connector 700 from having an adverse effect on the thickness of the backlight module, the height of the second light source connector 700 in the third direction F3 is less than or equal to the thickness of the back plate 100 in the third direction F3, that is, the second light source connector 700 in the third direction F3 is not easy to exceed the height of the back plate folded edge 140 in the third direction F3.

[0090] In the backlight module of some embodiments of the present disclosure, optionally, in the third direction F3, the second light source connector 700 maintains a certain distance from the edge of the back panel folded edge 140 and the inner surface 110 of the back panel. On the one hand, it can prevent the second light source connector 700 from interfering with the assembly of the back panel 100 and other structural parts. On the other hand, it is also convenient for the second light source connector 700 to be connected to the wiring harness. The wiring harness can also be bent after passing through the second connecting through hole so as to facilitate the shading and dust-proofing of the second connecting through hole by means of shading tape.

[0091] In the backlight module of some embodiments of the present disclosure, the second connecting through hole is provided at the position corresponding to the back plate 100 and the second light source connector 700. Since the second light source connector 700 is provided on the inner surface 110 of the back plate, the second connecting through hole is used to connect the second light source connector 700 with the system on chip 170 of the display device, and the second connecting through hole is used for the wire harness to pass through. Therefore, the orthographic projection of the second connecting through hole on the back plate 100 can be smaller than the orthographic projection of the second light source connector 700 on the back plate 100. On the one hand, the size of the second connecting through hole can be reduced, which is convenient for using a light shielding tape for light shielding and sealing, and reduces the risk of light leakage and foreign matter entering the backlight module; on the other hand, the area of ​​the opening 20 on the back plate 100 can be reduced, and the structural strength of the back plate 100 can be improved. Optionally, the size of the second connecting through hole can be designed according to the thickness of the wire harness and the convenience of assembly, which will not be repeated here.

[0092] In the backlight module of some embodiments of the present disclosure, a second notch 420 is provided at a position of the light guide plate 400 corresponding to the second light source connector 700 to avoid the second light source connector 700. The second light source connector 700 is located at the end of the second light source assembly 600 in the first direction F1. Since the second light source assembly 600 is located at the end of the inner surface 110 of the back plate in the second direction F2, from the overall view of the back plate 100, the second light source connector 700 is located at the corner of the back plate 100, and the second light source connector 700 occupies a part of the area of ​​the inner surface 110 of the back plate in both the first direction F1 and the second direction F2. Accordingly, in order to make the light guide plate 400 avoid the second light source connector 700, the light guide plate 400 needs to be retracted by a certain distance in both the first direction F1 and the second direction F2 to form the second notch 420. The light guide plate 400 has a portion that can abut against the second light source connector 700 in both the first direction F1 and the second direction F2, so the second light source connector 700 can limit the light guide plate 400 in both the first direction F1 and the second direction F2.

[0093] In the backlight module of some embodiments of the present disclosure, Fig.11 and Fig.12 As shown, the second light source connector 700 and the first light source connector 300 are respectively located at the diagonals of the inner surface 110 of the back panel, that is, the two opposite ends of the light guide plate 400 in the first direction F1 can be hard-limited by the first light source connector 300 and the second light source connector 700, respectively. At the same time, the two opposite ends of the light guide plate 400 in the second direction F2 can be hard-limited by the first light source connector 300 and the second light source connector 700, respectively, which can better play the limiting role of the first light source connector 300 and the second light source connector 700 on the light guide plate 400. Optionally, the flexible stopper 500 can be located at the remaining diagonal positions of the inner surface 110 of the back plate, that is, the two opposite ends of the light guide plate 400 in the first direction F1 can also be soft-limited by the flexible stopper 500, and the two opposite ends of the light guide plate 400 in the second direction F2 can also be soft-limited by the flexible stopper 500, so that the four ends of the light guide plate 400 have a combination of hard and soft limit limiting mode, so that the position of the light guide plate 400 can be accurately limited to avoid the light guide plate 400 shaking and causing abnormal noise. If the first light source connector 300 and the second light source connector 700 are located on the same side of the inner surface 110 of the back plate in the first direction F1, and there is an expansion gap between the first light source connector 300, the second light source connector 700 and the light guide plate 400, the light guide plate 400 is prone to shaking and causing abnormal noise.

[0094] As an optional implementation, Fig.11 and Fig.12As shown, the second notch 420 has a third expansion gap with the light source connector 10 in the first direction F1 ; the second notch 420 has a fourth expansion gap with the light source connector 10 in the second direction F2 .

[0095] In the backlight module of some embodiments of the present disclosure, since the light guide plate 400 is easily expanded by heat, the third expansion gap is provided between the second notch 420 and the light source connector 10 in the first direction F1, and the fourth expansion gap is provided between the second notch 420 and the light source connector 10 in the second direction F2. The third expansion gap and the fourth expansion gap are used to reserve a certain space for the expansion of the light guide plate 400 in the first direction F1 and the second direction F2, which can reduce the risk of wrinkles and the like caused by excessive restriction of the second light source connector 700 when the light guide plate 400 expands to a certain extent. The size of the third expansion gap and the size of the fourth expansion gap can be set according to the expansion deformation amount of the light guide plate 400.

[0096] As an optional implementation, Fig.13 and Fig.14 As shown, the back side 120 of the back plate is provided with a chip groove 121 which is recessed toward the inner side 110 of the back plate. The chip groove 121 is used to accommodate the chip 1120 . The edge of the chip groove 121 has an edge spacing distance L5 from the chip 1120 , and the bottom of the chip groove 121 has a bottom spacing distance L6 from the chip 1120 .

[0097] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, the display module includes a display panel 1100 and a chip 1120 (IC), the chip 1120 is bound to a binding flexible circuit board 1110 by a chip-on-film process, and is connected to the display panel 1100 by the binding flexible circuit board 1110. During the assembly process of the display module and the backlight module, the display panel 1100 is located at the light-emitting side of the backlight module, that is, the limit panel is located in the direction of the inner surface 110 of the backplane of the backlight module, and the chip 1120 is folded to the back surface 120 of the backplane by the binding flexible circuit board 1110.

[0098] The chip 1120 is generally weak in strength and is prone to wear and burn. In the related art, the chip 1120 is folded to the back of the back plate 120 and then touches the back plate 100, which easily causes the chip 1120 to wear and burn. Although the risk of chip 1120 wear can be reduced by placing a pad between the chip 1120 and the back plate 100, this anti-wear method will increase the number of structural parts of the display device, resulting in an increase in the material cost and assembly cost of the product.

[0099] In the backlight module of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, a chip groove 121 recessed toward the inner surface 110 of the back plate is provided on the back surface 120 of the back plate, and the chip groove 121 is configured to accommodate the chip 1120, and at the same time, an edge spacing distance L5 is provided between the edge of the chip groove 121 and the chip 1120, and a bottom spacing distance L6 is provided between the bottom of the chip groove 121 and the chip 1120. That is to say, in the first direction F1 and the second direction F2, the chip 1120 and the edge of the chip groove 121 have a certain edge spacing distance L5, and in the third direction F3, the chip 1120 and the bottom of the chip groove 121 have a certain bottom spacing distance L6, so that the chip 1120 can be suspended in the groove space formed in the chip groove 121. On the one hand, the risk of scratching and wear of the chip 1120 can be eliminated, and on the other hand, the heat dissipation space of the chip 1120 is increased. On the premise of improving the safety and heat dissipation of the chip 1120, anti-wear structures such as pads can also be reduced, thereby reducing the material cost and assembly cost of the product.

[0100] In the backlight module of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, optionally, if the structural strength and space of the backplane 100 allow, the distance L7 between the chip groove and the backplane edge can be reduced as much as possible to increase the size of the chip groove 121 as much as possible, thereby increasing the edge spacing distance L5 and the bottom spacing distance L6 as much as possible.

[0101] As an optional implementation, Fig.13 and Fig.14 As shown, the backlight module also includes a middle frame 800, which includes a bearing portion 810 and a side frame portion 820 perpendicular to the bearing portion 810, the side frame portion 820 is connected to the edge of the bearing portion 810 and is arranged around the bearing portion 810, the middle frame 800 is buckled on the back panel 100 so that the side frame portion 820 is engaged with the back panel folded edge 140, and the bearing portion 810 extends to the side of the light guide plate 400 away from the inner surface 110 of the back panel.

[0102] In the backlight module of some embodiments of the present disclosure, Fig.13 and Fig.14As shown, optionally, the middle frame 800 includes a bearing portion 810 and a side frame portion 820 perpendicular to the bearing portion 810, the side frame portion 820 is connected to the edge of the bearing portion 810 and is arranged around the bearing portion 810, when the middle frame 800 is buckled on the back plate 100, the side frame portion 820 can be engaged with the back plate folding edge 140, so that the middle frame 800 and the back plate 100 can be assembled together. At the same time, the bearing portion 810 extends to the side of the light guide plate 400 away from the inner surface 110 of the back plate, so that the light guide plate 400 can be clamped between the bearing portion 810 and the inner surface 110 of the back plate, and the light guide plate 400 is limited in the third direction F3.

[0103] In the backlight module of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, the backlight module also includes an optical film material 900, which is located on the side of the light guide plate 400 away from the back plate 100. The supporting portion 810 can clamp the optical film material 900 and the light guide plate 400 between the supporting portion 810 and the inner surface 110 of the back plate, thereby limiting the optical film material 900 and the light guide plate 400 in the third direction F3.

[0104] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, the supporting portion 810 is also used to support the display panel 1100 . During the assembly process of the display module and the backlight module, the display panel 1100 can be arranged on a side of the supporting portion 810 away from the light guide plate 400 , so that the display panel 1100 can be supported by the supporting portion 810 .

[0105] As an optional implementation, Fig.13 and Fig.14 As shown, the middle frame 800 further includes a first buffer pad 830 and a second buffer pad 840 . The first buffer pad 830 is disposed between the bearing portion 810 and the light guide plate 400 , and the second buffer pad 840 is disposed on a side of the bearing portion 810 away from the light guide plate 400 .

[0106] In the backlight module of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, the first buffer pad 830 is arranged between the bearing part 810 and the light guide plate 400. The first buffer pad 830 can reduce the stress generated by the bearing part 810 on the light guide plate 400 during assembly, prevent the light guide plate 400 from being damaged by pressure, and can also achieve sealing between the bearing part 810 and the light guide plate 400 to prevent foreign matter from entering the backlight module.

[0107] In the backlight module of some embodiments of the present disclosure, Fig.13 and Fig.14As shown, the second buffer pad 840 is arranged on the side of the bearing part 810 away from the light guide plate 400. The second buffer pad 840 can reduce the stress generated by the bearing part 810 on the display panel 1100 during assembly to prevent the display panel 1100 from being damaged. It can also achieve sealing between the bearing part 810 and the display panel 1100 to prevent foreign matter from entering between the display panel 1100 and the backlight module.

[0108] In the backlight module of some embodiments of the present disclosure, optionally, the first buffer pad 830 and the second buffer pad 840 can be made of buffer foam material. Optionally, the first buffer pad 830 and the second buffer pad 840 can also be attached to the bearing part 810 by adhesive materials such as optical adhesive or double-sided adhesive.

[0109] As an optional implementation, Fig.14 and Fig.15 As shown, a binding flexible circuit board avoidance groove 821 is provided on one side of the side frame portion 820 away from the back panel folding edge 140 and at a position corresponding to the binding flexible circuit board 1110 of the display module.

[0110] In the backlight module of some embodiments of the present disclosure, Fig.14 and Fig.15 As shown, the binding flexible circuit board 1110 connected to the display panel 1100 is folded to the back side 120 of the back panel, and the binding flexible circuit board 1110 passes between the middle frame 800 and the frame 1200. A binding flexible circuit board avoidance groove 821 is provided on the side of the side frame portion 820 away from the back panel folding edge 140 and at a position corresponding to the binding flexible circuit board 1110 of the display module. The binding flexible circuit board avoidance groove 821 can be used to form a certain space between the frame 1200 and the side frame portion 820 for the binding flexible circuit board 1110 to pass through, which can reduce the risk of the binding flexible circuit board 1110 being damaged by friction when clamped between the frame 1200 and the side frame portion 820 to a certain extent.

[0111] As an optional implementation, Figures 15 to 17 As shown, a locking avoidance groove 822 recessed toward the back panel folding edge 140 is provided at a position of the side frame portion 820 away from the back panel folding edge 140 and corresponding to the locking groove 1221 of the frame 1200 .

[0112] In the backlight module of some embodiments of the present disclosure, Figures 15 to 17 As shown, when the frame 1200, the middle frame 800 and the back plate 100 are assembled, the frame 1200, the middle frame 800 and the back plate 100 can be fixed together by connecting members such as screws. Thereby, the fixing strength between the frame 1200, the middle frame 800 and the back plate 100 is improved, and the risk of loose assembly between the frame 1200, the middle frame 800 and the back plate 100 is avoided.

[0113] In the backlight module of some embodiments of the present disclosure, Figures 15 to 17 As shown, since the screw has a bolt head 1222 of a certain height, a locking groove 1221 is provided at the position of the frame 1200 for locking the screw, so that the bolt head 1222 can be located in the locking groove 1221, thereby preventing the bolt head 1222 from being higher than the surface of the frame 1200 and causing an increase in the product profile.

[0114] In the backlight module of some embodiments of the present disclosure, Figures 15 to 17 As shown, when the frame 1200 is provided with a locking groove 1221, the locking groove 1221 of the frame 1200 extends toward the side frame portion 820. In order to avoid positional interference between the locking groove 1221 and the side frame portion 820, a locking avoidance groove 822 recessed toward the back panel folding edge 140 is provided on the side of the side frame portion 820 away from the back panel folding edge 140, and the locking avoidance groove 822 is made to correspond to the position of the locking groove 1221, so that the locking groove 1221 is avoided by the locking avoidance groove 822 and the locking groove 1221 can be located in the locking avoidance groove 822.

[0115] For example, the diameter of the screw can be 2 mm, and the height of the bolt head 1222 of the screw is 0.5 mm, so the locking groove 1221 of the frame 1200 extends at least 0.5 mm toward the side frame 820, and accordingly, the locking avoidance groove 822 is at least 0.5 mm recessed toward the back panel folding edge 140. Therefore, after the frame 1200, the middle frame 800 and the back panel 100 are assembled, the parts of the frame 1200, the middle frame 800 and the back panel 100 corresponding to the screw locking position are fitted in sequence, which can avoid interference between the frame 1200 and the middle frame 800 during assembly and make the assembled structure more stable.

[0116] As an optional implementation, Figures 15 to 17 As shown, the back panel folded edge 140 is provided with a snap portion 141 protruding toward the side frame portion 820, a snap through hole is provided at a position of the side frame portion 820 corresponding to the snap portion 141, and a snap thinning groove 823 is provided on the side of the side frame portion 820 away from the back panel folded edge 140 and around the snap through hole.

[0117] In the backlight module of some embodiments of the present disclosure, Figures 15 to 17As shown, the back panel folding edge 140 is provided with a snap portion 141 protruding toward the side frame portion 820, and a snap through hole is provided at a position corresponding to the snap through hole of the side frame portion 820 and the snap through hole. The snap through hole is passed through by the snap through hole and snapped with the surrounding of the snap through hole, so that the middle frame 800 and the back panel 100 can be assembled together. At the same time, in order to avoid the protrusion of the surface of the side of the side frame part 820 away from the back panel folding edge 140 and interference with the frame 1200 after the buckle part 141 is engaged with the buckle through hole, a buckle thinning groove 823 can be provided on the side of the side frame part 820 away from the back panel folding edge 140 and located around the buckle through hole. The buckle part 141 passes through the buckle through hole and engages with the buckle thinning groove 823 around the buckle through hole, thereby reducing the protruding height of the buckle part 141 relative to the back panel folding edge 140, and further reducing the height of the buckle part 141 relative to the side of the side frame part 820 away from the back panel folding edge 140 after passing through the buckle through hole, so that the part of the buckle part 141 after passing through the buckle through hole is located in the buckle thinning groove 823, thereby avoiding interference of the buckle part 141 with the frame 1200.

[0118] like Figures 15 to 17 As shown, when the folding position, screw locking position and snap-in position of the binding flexible circuit board 1110 are all located on the same side of the side frame portion 820, due to the large area occupied by the binding flexible circuit board 1110, the screw locking position and the snap-in position are relatively close, and the locking avoidance groove 822 may partially overlap with the snap-in position. If the snap-in position of the side frame portion 820 is not provided with a snap-in thinning groove 823, the snap-in portion 141 passes through the snap-in through hole and snaps with the periphery of the snap-in through hole. A part of the snap-in portion 141 is snapped on the side frame portion 820, and the other part is snapped on the locking avoidance groove 822, which will cause a loose snap-in defect between the middle frame 800 and the back panel 100.

[0119] In the backlight module of some embodiments of the present disclosure, Figures 15 to 17 As shown, by providing a snap-on thinning groove 823 on the side of the side frame portion 820 away from the back panel folding edge 140 and located at the periphery of the snap-on through hole, the depression depth of the snap-on thinning groove 823 can be made the same as the depression depth of the lock avoidance groove 822. After the snap-on portion 141 passes through the snap-on through hole and engages with the periphery of the snap-on through hole, the snap-on portion 141 will engage with the snap-on thinning groove 823 and / or the lock avoidance groove 822. Since the depression depth of the snap-on thinning groove 823 is the same as the depression depth of the lock avoidance groove 822, the engaging position of the snap-on portion 141 can be made flat, thereby ensuring that the engagement between the middle frame 800 and the back panel 100 is more stable.

[0120] In the backlight module of some embodiments of the present disclosure, Figures 15 to 17As shown, the material of the middle frame 800 may be polycarbonate (PC plastic). Optionally, the side frame portions 820 on the four sides of the middle frame 800 may all be provided with snap structures to be snap-fitted and fixed with the back plate 100 .

[0121] As an optional embodiment, the back panel 100 has opposite back panel folded edges 140 in the first direction F1 and are respectively provided with first film material hanging ears, and the back panel 100 has opposite back panel folded edges 140 in the second direction F2 and are respectively provided with second film material hanging ears, and the backlight module also includes an optical film material 900, which is hung on the first film material hanging ear and / or the second film material hanging ear, and the optical film material 900 is located on the side of the light guide plate 400 away from the inner surface 110 of the back panel.

[0122] In the backlight module of some embodiments of the present disclosure, the back panel 100 has back panel folded edges 140 opposite to each other in the first direction F1, respectively, and the back panel folded edges 140 opposite to each other in the second direction F2, respectively, provided with second film material hanging ears. That is to say, the back panel 100 is provided with film material hanging ears on the top and bottom sides and the left and right sides for positioning the optical film material 900. Thus, the backlight module can be used in a horizontally and vertically compatible manner and can be used in different scenarios.

[0123] In the backlight module of some embodiments of the present disclosure, optionally, as Figure 4 As shown, the optical film material 900 may include an upper diffusion film 910 , an upper polarizing film 920 , a lower polarizing film 930 , and a lower diffusion film 940 which are stacked in sequence.

[0124] In the backlight module of some embodiments of the present disclosure, optionally, as Figure 4 As shown, the backlight module further includes a luminous film, and the reflective film 1000 can be disposed between the light guide plate 400 and the inner surface 110 of the back plate. Optionally, the thickness of the reflective film 1000 can be 0.130 mm to 0.300 mm. For example, the thickness of the reflective film 1000 can be 0.130 mm, 0.150 mm, 0.170 mm, 0.190 mm, 0.215 mm, 0.235 mm, 0.250 mm, 0.270 mm, 0.290 mm, and 0.300 mm.

[0125] Based on the same inventive concept, the present disclosure provides a display device, such as Figures 4 to 17As shown, the display device includes the above-mentioned backlight module, display module, frame 1200 and front frame 1300; the frame 1200 includes an upper frame 1210 and a side frame 1220 perpendicular to the upper frame 1210, the side frame 1220 is connected to the edge of the upper frame 1210 and is arranged around the upper frame 1210, and the frame 1200 is buckled on the backlight module so that the display module is clamped between the upper frame 1210 and the backlight module; the front frame 1300 includes an upper front frame 1310 and a side front frame 1320 perpendicular to the upper front frame 1310, the side front frame 1320 is connected to the edge of the upper front frame 1310 and is arranged around the upper front frame 1310, and the front frame 1300 is buckled on the frame 1200 so that the upper front frame 1310 covers the upper frame 1210.

[0126] Since the display device provided by the present invention includes the backlight module of the above technical solution, the display device provided by the present invention has all the beneficial effects of the above backlight module, which will not be described in detail here.

[0127] In the display device of some embodiments of the present disclosure, Figure 4 and Figure 5 As shown, the front frame 1300 is the front shell of the display device. The front frame 1300 is used to shield the frame 1200. The material of the front frame 1300 can be polycarbonate (PC plastic).

[0128] In the display device of some embodiments of the present disclosure, Figure 4 and Figure 5 As shown, the frame 1200 is buckled on the backlight module so that the display module is sandwiched between the upper frame 1210 and the backlight module to fix the display module. Optionally, the frame 1200 can be made of metal material.

[0129] In the display device of some embodiments of the present disclosure, Figure 4 and Figure 5 As shown, optionally, the display module can be a liquid crystal display module, the display module includes a display panel 1100, a binding flexible circuit board 1110, a chip 1120 and a display module circuit board 150, the chip 1120 is bound to the binding flexible circuit board 1110 by using a flip chip film process, and the binding flexible circuit board 1110 is connected between the display panel 1100 and the display module circuit board 150, so as to connect the display panel 1100 and the display module circuit board 150 together; at the same time, the display module circuit board 150 can also be connected to the system on chip 170 by connecting the flexible circuit board 160. Optionally, the connecting flexible circuit board 160 can be fixed to the back side 120 of the back plate by a single-sided tape 161, so as to improve the stability of the connection of the connecting flexible circuit board 160.

[0130] In the display device of some embodiments of the present disclosure, Figure 4 and Figure 5 As shown, the display panel 1100 may include an upper polarizer, a color filter, an array substrate, and a lower polarizer stacked in sequence. The thickness of the upper polarizer may be 0.3 mm to 0.7 mm, the thickness of the color filter may be 0.3 mm to 0.7 mm, the thickness of the array substrate may be 0.3 mm to 0.7 mm, and the thickness of the lower polarizer may be 0.10 mm to 0.24 mm.

[0131] In the display device of some embodiments of the present disclosure, Figure 5 As shown, a plurality of rivet posts 190 are provided on the back side 120 of the back plate. The rivet posts 190 can be used to fix the back plate 100 and the rear shell of the display device during the whole assembly process of the display device.

[0132] In the display device of some embodiments of the present disclosure, Figure 5 As shown, a circuit board cover 180 is provided on the back side 120 of the back plate. The circuit board cover 180 can be made of a metal sheet such as a galvanized sheet to protect the circuit board. Optionally, the circuit board cover 180 can be set to a honeycomb shape, which is beneficial to the heat dissipation of the circuit board on the one hand, and can also enhance the structural strength of the circuit board cover 180 on the other hand. Optionally, the thickness of the circuit board cover 180 can be 0.3mm to 0.7mm. For example, the thickness of the circuit board cover 180 is 0.3mm, 0.4mm, 0.5mm, 0.6mm, and 0.7mm.

[0133] In the display device of some embodiments of the present disclosure, Figure 5 As shown, the system on chip 170 (System on Chip, SOC)

[0134] Under limited design space for the circuit board cover 180, the width of the circuit board cover 180 in the first direction F1 and the second direction F2 can be increased to facilitate alignment of the connector on the system-on-chip 170 with the connector on the display module circuit board 150. At the same time, the flexible circuit board 160 can be prevented from bending during the connection process, which can avoid the risk of image abnormalities due to unstable connector connection to a certain extent.

[0135] As an optional implementation, a shielding protrusion 1311 extending toward the display module is provided on an edge of the upper front frame 1310 away from the side front frame 1320 .

[0136] In the display device of some embodiments of the present disclosure, Fig.13As shown, by providing a shielding protrusion 1311 extending toward the display module at the edge of the upper front frame 1310 away from the side front frame 1320, the shielding protrusion 1311 can shield the edge portion of the upper frame 1210 away from the side frame 1220, so that the upper frame 1210 does not leak out, thereby omitting the blackening process of the frame 1200, so that the frame 1200 maintains its original color, thereby reducing the manufacturing cost of the frame 1200. At the same time, by shielding the edge portion of the upper frame 1210 away from the side frame 1220 through the shielding protrusion 1311, the upper frame 1210 can be retracted a certain distance in the direction where the side frame 1220 is located to avoid the upper front frame 1310, so that the widths of the upper frame 1210 and the upper front frame 1310 in the first direction F1 and the second direction F2 can be reduced, and a narrower frame 1200 design can be achieved. In addition, the shielding protrusion 1311 can also reduce the gap between the upper front frame 1310 and the display panel 1100 in the third direction F3, which can increase the appearance of the product.

[0137] As an optional implementation, the frame 1200 further includes a third buffer pad 1230 , and the third buffer pad 1230 is disposed between the upper frame 1210 and the display module.

[0138] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, by setting a third buffer pad 1230 between the upper frame 1210 and the display module, the third buffer pad 1230 can reduce the stress generated by the upper frame 1210 on the display panel 1100 during assembly, prevent the display panel 1100 from being damaged, and achieve sealing between the upper frame 1210 and the display panel 1100 to prevent foreign matter from entering the interior of the device.

[0139] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, the thickness of the third buffer pad 1230 may be 0.18 mm to 1.42 mm. For example, the thickness of the third buffer pad 1230 may be 0.18 mm, 0.20 mm, 0.22 mm, 0.24 mm, 0.26 mm, 0.28 mm, 0.30 mm, 0.32 mm, 0.34 mm, 0.36 mm, 0.38 mm, 0.40 mm, and 0.42 mm.

[0140] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14As shown, the distance L3 between the shielding protrusion and the display area can be 1.8 mm to 3.0 mm. Optionally, the distance L3 between the shielding protrusion and the display area is the same on the top and bottom sides and the left and right sides of the display device, so that the frame 1200 around the display device is of equal width, which is more beautiful and comfortable. For example, the distance L3 between the shielding protrusion and the display area can be 2.4 mm on the top and bottom sides and the left and right sides of the display device.

[0141] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, the distance L4 between the shielding protrusion and the end of the display panel can be 2.0mm-4.0mm, that is, the upper front frame 1310 and the upper frame 1210 can overlap the display panel 1100 by 2.0mm-4.0mm, so as to ensure that the display panel 1100 is fixed between the upper frame 1210 and the middle frame 800. For example, the distance L4 between the shielding protrusion and the end of the display panel can be 2.0mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm and 4.0mm, etc.

[0142] As an optional implementation, a buffer gap G3 is provided between the shielding protrusion 1311 and the display module, and the buffer gap G3 is less than or equal to the thickness of the third buffer pad 1230 .

[0143] In the display device of some embodiments of the present disclosure, Fig.13 and Fig.14 As shown, there is a buffer gap G3 between the shielding protrusion 1311 and the display module, and by making the buffer gap G3 less than or equal to the thickness of the third buffer pad 1230, it can be ensured that the shielding protrusion 1311 completely shields the upper frame 1210. Optionally, the buffer gap G3 can be 0.3mm to 0.7mm.

[0144] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0145] In the present disclosure, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0146] In addition, in the present disclosure, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0147] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this disclosure.

[0148] Although embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A backlight module, characterized in that: The backlight module comprises: A back plate, the back plate comprising an inner surface of the back plate and a back surface of the back plate that are arranged opposite to each other; A first light source assembly, wherein the first light source assembly is arranged on the inner surface of the back plate; A first light source connector, which is disposed on the inner surface of the back plate and connected to the first light source assembly; and A light guide plate, the light guide plate is arranged on the inner surface of the back plate, and a first notch is provided at a position of the light guide plate corresponding to the first light source connector to avoid the first light source connector; Wherein, a first connecting through hole penetrating the back plate is provided at a position of the back plate corresponding to the first light source connector.

2. The backlight module according to claim 1, characterized in that: The first light source assembly is arranged on the inner surface of the back panel along a first direction, the first light source assembly is located at the end of the inner surface of the back panel in a second direction, and the first light source connector is located at the end of the first light source assembly in the first direction; wherein the second direction is perpendicular to the first direction.

3. The backlight module according to claim 2, characterized in that: A first expansion gap is formed between the first notch and the light source connector in the first direction; and a second expansion gap is formed between the first notch and the light source connector in the second direction.

4. The backlight module according to claim 3, characterized in that: The backlight module also includes: A plurality of flexible limit blocks are arranged on the inner surface of the back panel and abut against the end of the light guide plate, at least one of the flexible limit blocks abuts against the end of the light guide plate in the second direction away from the first light source connector; at least one of the flexible limit blocks abuts against the end of the light guide plate in the first direction away from the first light source connector.

5. The backlight module according to claim 4, characterized in that: The flexible stopper is in a corner shape and is arranged at a corner of the inner surface of the back plate so that the flexible stopper abuts against two adjacent ends of the light guide plate.

6. The backlight module according to claim 4, characterized in that: At least two of the flexible limit blocks are respectively in one-to-one contact with two opposite ends of the light guide plate in the first direction; at least two of the flexible limit blocks are respectively in one-to-one contact with two opposite ends of the light guide plate in the second direction.

7. The backlight module according to claim 2, wherein: The backlight module also includes: A second light source assembly, the second light source assembly is arranged on the inner surface of the back plate along the first direction, and the second light source assembly and the first light source assembly are located at two opposite ends of the inner surface of the back plate in the second direction; and a second light source connector, which is disposed on the inner surface of the back plate and connected to the second light source assembly, the second light source connector being located at an end of the second light source assembly in the first direction, and the second light source connector and the first light source connector being located at opposite corners of the inner surface of the back plate; Wherein, a second notch is provided at a position of the light guide plate corresponding to the second light source connector to avoid the second light source connector; A second connecting through hole penetrating through the inner surface of the back plate and the back surface of the back plate is provided at a position of the back plate corresponding to the second light source connector.

8. The backlight module according to claim 7, characterized in that: A third expansion gap is formed between the second notch and the light source connector in the first direction; and a fourth expansion gap is formed between the second notch and the light source connector in the second direction.

9. The backlight module according to any one of claims 2 to 8, characterized in that: The back of the back plate is provided with a chip groove which is recessed toward the inner surface of the back plate, the chip groove is used to accommodate a chip, an edge of the chip groove has an edge spacing distance from the chip, and a bottom spacing distance from the chip has a bottom spacing distance from the chip.

10. The backlight module according to claim 9, characterized in that: The back plate also includes a back plate folding edge arranged around the inner surface of the back plate.

11. The backlight module according to claim 10, wherein: The backlight module also includes: The middle frame includes a bearing portion and a side frame portion perpendicular to the bearing portion, the side frame portion is connected to the edge of the bearing portion and is arranged around the bearing portion, the middle frame is buckled on the back panel so that the side frame portion is engaged with the folded edge of the back panel, and the bearing portion extends to the side of the light guide plate away from the inner surface of the back panel.

12. The backlight module according to claim 11, wherein: A binding flexible circuit board avoidance groove is provided at a position of the side frame portion that is away from the folded edge of the back plate and corresponds to the binding flexible circuit board of the display module.

13. The backlight module according to claim 11, wherein: A locking avoidance groove recessed toward the folding direction of the back plate is provided at a position of the side frame portion away from the folding edge of the back plate and corresponding to the locking groove of the frame.

14. The backlight module according to claim 11, wherein: The back panel folding edge is provided with a snap portion protruding toward the side frame portion, the side frame portion is provided with a snap through hole at a position corresponding to the snap portion, and the side frame portion is provided with a snap thinning groove on a side away from the back panel folding edge and located around the snap through hole.

15. The backlight module according to claim 10, wherein: The back panel folded edges opposite to each other in the first direction are respectively provided with first film material hanging ears, and the back panel folded edges opposite to each other in the second direction are respectively provided with second film material hanging ears. The backlight module also includes an optical film material, and the optical film material is hung on the first film material hanging ears and / or the second film material hanging ears, and the optical film material is located on the side of the light guide plate away from the inner surface of the back panel.

16. A display device, characterized in that: The display device comprises: The backlight module according to any one of claims 1 to 14; Display module; A frame, the frame comprising an upper frame and side frames perpendicular to the upper frame, the side frames being connected to the edge of the upper frame and arranged around the upper frame, the frame being buckled on the backlight module so that the display module is sandwiched between the upper frame and the backlight module; and, The front frame comprises an upper front frame and a side front frame perpendicular to the upper front frame, the side front frame is connected to the edge of the upper front frame and is arranged around the upper front frame, and the front frame is buckled on the frame so that the upper front frame covers the upper frame.

17. The display device according to claim 16, wherein: An edge of the upper front frame away from the side front frame is provided with a shielding protrusion extending toward the display module.

18. The display device according to claim 17, wherein: The frame also includes: A third buffer pad is arranged between the upper frame and the display module.

19. The display device according to claim 18, wherein: A buffer gap is provided between the shielding protrusion and the display module, and the buffer gap is less than or equal to the thickness of the third buffer pad.

Images