Light source assembly, backlight module, display module and display device

Abstract

The utility model discloses a light source assembly, a backlight module, a display module and a display device. The light source assembly of one embodiment comprises a driving plate and a lamp set which is arranged on the surface of one side of the driving plate, electrically connected with the driving plate and extends in the first direction, the driving plate comprises a first substrate layer, a conductive layer connected with the lamp set and a signal leading-out part electrically connected with the conductive layer, and the signal leading-out part extends in the second direction perpendicular to the first direction; the lamp set comprises a plurality of lamp wicks arranged in the first direction. The light source assembly further comprises a bonding layer, the bonding layer comprises a first edge part and a second edge part which extend in the first direction, and the first edge part is farther from the signal leading-out part than the second edge part. The bonding layer is provided with a first opening at the position of each wick, the first opening comprises a first boundary and a second boundary which extend along the first direction, the first boundary is farther from the signal leading-out part than the second boundary, and the second boundary comprises a convex part far away from the direction of the first boundary.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and more specifically, to a light source assembly, a backlight module, a display module, and a display device. Background Art

[0002] The brightness of OLED (organic light-emitting diode) display modules of related technologies has reached over 1000 nits, with local instantaneous brightness peaks even reaching 2000 nits. LCD (liquid crystal) display modules need to continue to improve product brightness specifications to narrow the brightness gap with OLED display products. Utility Model Content

[0003] The purpose of the present invention is to provide a light source assembly, a backlight module, a display module and a display device to solve at least one of the problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The first aspect of the present invention provides a light source assembly, comprising: a driving board and a lamp group disposed on a side surface of the driving board and electrically connected to the driving board and extending along a first direction.

[0006] The driving board includes:

[0007] a first substrate layer having a first surface and a second surface;

[0008] A conductive layer connected to the lamp group is provided on one side of the second surface; and

[0009] A signal lead-out portion electrically connected to the conductive layer, wherein the signal lead-out portion extends in a second direction perpendicular to the first direction;

[0010] The lamp group is arranged on one side of the first surface and includes a plurality of lamp wicks arranged along a first direction;

[0011] The light source assembly further includes an adhesive layer disposed on one side of the first surface, the adhesive layer including a first side portion and a second side portion extending along a first direction, the first side portion being farther away from the signal lead-out portion than the second side portion;

[0012] The adhesive layer is provided with a first opening at the position of each of the wicks, wherein the orthographic projection of the first opening on the first surface covers the orthographic projection of the wick on the first surface.

[0013] The first opening includes a first boundary and a second boundary extending along a first direction. The first boundary is farther away from the signal lead-out portion than the second boundary. The second boundary includes a protruding portion farther away from the first boundary.

[0014] In an optional embodiment, the closer to the edge of the wick along the first direction, the smaller the distance between the boundary of the wick and the second boundary.

[0015] There is a gap between the second boundary and the second side.

[0016] In an optional embodiment, both ends of the raised portion of the second boundary form a first fracture, and the length of the first fracture in the first direction is less than or equal to the length of the wick in the first direction; the first opening further includes a third boundary and a fourth boundary perpendicular to the first boundary and oppositely arranged, and the distance between the third boundary and the fourth boundary is greater than the length of the wick in the first direction.

[0017] The length of the third boundary or the fourth boundary in the second direction is greater than the length of the wick in the second direction.

[0018] In an optional embodiment, the adhesive layer is provided with a second opening at a position on the second side corresponding to each of the wicks.

[0019] The second opening includes a raised portion close to the first edge;

[0020] A distance between a center line of the second opening parallel to the second direction and a center line of the wick parallel to the second direction is less than or equal to 1 / 10 of a length of the wick in the first direction.

[0021] In an optional embodiment, two ends of the raised portion of the second boundary form a first fracture, and the length of the first fracture in the first direction is less than or equal to the length of the wick in the first direction;

[0022] Two ends of the raised portion of the second opening corresponding to the second edge position form a second break, and the length of the second break in the first direction is less than or equal to the length of the first break in the first direction.

[0023] In an optional embodiment, there is a gap between the second boundary of the first opening and the opening boundary of the second opening, and the length of the adhesive layer at the gap position in the second direction is ≥0.4 mm.

[0024] In an optional embodiment, the second opening extends to the first opening, and the second opening is communicated with the first opening;

[0025] The second opening and the first opening are connected to form a first opening boundary and a second opening boundary respectively. The distance between the first opening boundary and the second opening boundary in the first direction is smaller than the length of the first break in the first direction.

[0026] In an optional embodiment, the wick includes a first wick surface in contact with the first surface, a second wick surface opposite to the first wick surface, a wick light-emitting surface perpendicular to the first wick surface, and a wick non-light-emitting surface opposite to the wick light-emitting surface;

[0027] A light emitting focus is formed between the non-light emitting surface of the wick and the wick center line parallel to the second direction;

[0028] The angle formed by the intersection of the first opening and the light output focus is less than or equal to 45°;

[0029] The angle formed by the second opening boundary and the light-emitting focus is less than or equal to 45°.

[0030] In an optional embodiment, the adhesive layer includes:

[0031] The PET layer includes a third surface and a fourth surface disposed opposite to each other, wherein the third surface is closer to the first surface than the fourth surface;

[0032] a first glue layer disposed on the third surface;

[0033] a second glue layer disposed on the fourth surface;

[0034] Wherein, at least the third surface of the PET layer is white, and at least the fourth surface of the PET layer is white.

[0035] In an optional embodiment, the PET layer is a white substrate.

[0036] and / or

[0037] The adhesive layer further includes a first reflection-enhancing layer arranged between the third surface and the first glue layer.

[0038] In an optional embodiment, the PET layer is a transparent substrate.

[0039] The PET layer includes: a first silk-screen layer located between the first glue layer and the third surface; and

[0040] The second silk-screen layer is located between the second glue layer and the fourth surface, and the material of the first silk-screen layer and the second silk-screen layer is silk-screen white oil.

[0041] In an optional embodiment, the adhesive layer further comprises:

[0042] A second reflection-enhancing layer is provided between the first silk-screen layer and the first glue layer.

[0043] In an optional embodiment, the first glue layer is doped with diffusion particles, the number of the diffusion particles distributed per unit millimeter area is 10 to 15, and the peeling force of the first glue layer is 1800 to 2400 gf.

[0044] In an optional embodiment, the driving board further includes a coating layer, the coating layer being located between the first surface and the lamp group close to the first surface, and between the first surface and the adhesive layer close to the first surface, and the orthographic projection of the coating layer on the first base layer covering the first base layer.

[0045] and / or

[0046] The color of the coating layer is light blue, and the wavelength range is 475-520nm.

[0047] A second aspect of the present invention provides a backlight module, comprising:

[0048] a back plate having a groove, the back plate comprising a bottom wall and side walls;

[0049] a reflective sheet disposed on the bottom wall;

[0050] a light guide plate disposed on the reflective sheet;

[0051] A scattering film material provided on the light guide plate; and

[0052] The light source assembly described in the first aspect of the present invention, the adhesive layer of the light source assembly on the side away from the signal lead-out part is fixed to the surface of the light guide plate on the side away from the reflective sheet, the adhesive layer of the light source assembly close to the signal lead-out part is fixed to the side wall of the back panel, and the light-emitting surface of the wick is fitted with the side wall surface of the light guide plate perpendicular to the side wall.

[0053] In an optional embodiment, the light guide plate includes a fifth surface close to the back plate and a sixth surface away from the back plate.

[0054] A mesh dot structure is provided in an area corresponding to the display area on the fifth surface, and the mesh dots of the mesh dot structure are smaller as they are closer to the light source assembly.

[0055] In an optional embodiment, the mesh dot structure includes a first mesh dot, a second mesh dot, and a third mesh dot arranged from the light source assembly toward the light guide plate.

[0056] The diameter and depth of the first mesh dots are smaller than those of the second mesh dots, and the diameter and depth of the second mesh dots are smaller than those of the third mesh dots.

[0057] In an optional embodiment, the first mesh points, the second mesh points and the third mesh points are evenly distributed.

[0058] In an optional embodiment, a scattering structure is provided in an area corresponding to the display area on the sixth surface, and the scattering structure is a plurality of tooth-shaped protrusions extending from the fifth surface to the sixth surface.

[0059] The plurality of tooth-shaped protrusions are arranged in an array along a first direction, and each tooth-shaped protrusion extends along a second direction.

[0060] In an optional embodiment, a first compensation dot is provided on a side of the scattering structure away from the fifth surface, and the first compensation dot is distributed in a display area of ​​the light guide plate where the brightness is smaller than a preset brightness.

[0061] In an optional embodiment, a second compensation dot is provided in an area of ​​the fifth surface corresponding to the non-display area.

[0062] The second compensation network points are arranged at intervals between adjacent wicks, and the maximum length of the second compensation network points in the first direction is greater than the interval length between adjacent wicks in the first direction.

[0063] The orthographic projection of the second compensation point on the fifth surface is a protruding structure extending from the boundary of the light guide plate close to the lamp core toward a side away from the lamp core.

[0064] A third aspect of the present invention provides a display module, the display module comprising the backlight module described in any one of the second aspects of the present invention;

[0065] a first polarizer disposed on a side of the backlight module away from the back plate;

[0066] a display panel disposed on the first polarizer;

[0067] A second polarizer is disposed on the display panel.

[0068] In an optional embodiment, the hue parameter of the first polarizer is 2.55 to 2.65, and / or

[0069] The hue parameter of the second polarizer is 2.55-2.65.

[0070] A fourth aspect of the present invention provides a display device, comprising the display module according to any one of the third aspects of the present invention.

[0071] The beneficial effects of the utility model are as follows:

[0072] In an embodiment of the utility model, the adhesive layer of the light source assembly is designed to have a first opening corresponding to the position of the wick. On the basis of utilizing the first opening to allow the wick to leak out, the shape of the first opening is designed to be a raised structure extending from the first boundary toward the second boundary, thereby increasing the opening area for light output of the light source and thus improving the luminous brightness of the light source assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0074] Figure 1 A schematic diagram showing the layer structure of a light source assembly according to a first embodiment of the present invention;

[0075] Figure 2 A schematic diagram showing a top view of a light source assembly having a first opening according to an embodiment of the present utility model is shown;

[0076] Figure 3 A schematic top view of a light source assembly with a rectangular opening in the related art is shown;

[0077] Figure 4 A schematic diagram of a top view of a light source assembly having a first opening and a second opening according to an embodiment of the present utility model is shown;

[0078] Figure 5 A schematic top view of a light source assembly having a first opening and a small second opening according to an embodiment of the present invention is shown;

[0079] Figure 6 A schematic diagram of a top view of a light source assembly having a first opening and a large second opening according to an embodiment of the present invention is shown;

[0080] Figure 7 A schematic diagram showing a structure of a layer in which the adhesive layer of an embodiment of the present invention is double-sided white;

[0081] Figure 8 Another schematic diagram showing the structure of the adhesive layer of the embodiment of the present invention with both sides being white;

[0082] Figure 9 A schematic diagram showing the layer structure of a light source assembly according to an embodiment of the present invention is shown;

[0083] Figure 10 A schematic diagram showing the layer structure of a backlight module according to a second embodiment of the present invention;

[0084] Figure 11 A schematic top view showing the dot structure of the light guide plate according to an embodiment of the present invention;

[0085] Figure 12 Show Figure 11Schematic diagram of the layer structure of the dot structure of the light guide plate;

[0086] Figure 13 A schematic top view of a light guide plate with a scattering structure according to an embodiment of the present invention is shown;

[0087] Figure 14 Show Figure 13 Schematic diagram of the layer structure of the light guide plate with a scattering structure;

[0088] Figure 15 A schematic diagram showing light rays of dark and bright areas of a light source assembly of the related art;

[0089] Figure 16 A schematic top view of a light guide plate with second compensation dots according to an embodiment of the present invention is shown;

[0090] Figure 17 A schematic diagram showing the layer structure of a display module according to a third embodiment of the present invention is shown. DETAILED DESCRIPTION

[0091] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the following detailed description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0092] To improve the brightness of liquid crystal display products, embodiments of the present invention provide a light source assembly, a backlight module, a display module, a display device, and a manufacturing method thereof.

[0093] The first embodiment of the present invention provides a light source assembly 50, such as Figure 1 and Figure 2 As shown, the light source assembly 50 includes: a driving board 51 and a lamp group 52 provided on one side surface of the driving board 51 and electrically connected to the driving board 51 and extending along a first direction.

[0094] like Figure 2 As shown, the first direction of the embodiment of the utility model is Figure 2 The horizontal direction shown, the second direction is Figure 2 In one example, when the light source assembly 50 is applied to a backlight module, the backlight module is an edge-entry backlight module. In this structure, the second direction is the assembly direction of the light source assembly 50 to the light guide plate, and the first direction is the extension direction of the light source assembly 50.

[0095] like Figure 1 and Figure 2 As shown, the driving plate 51 described in the embodiment of the present utility model includes:

[0096] a first substrate layer 511 having a first surface 511A and a second surface 511B;

[0097] a conductive layer 512 disposed on one side of the second surface 511B and connected to the lamp group 52; and

[0098] The signal lead-out portion 513 is electrically connected to the conductive layer 512 , and the signal lead-out portion 513 extends in a second direction perpendicular to the first direction.

[0099] For example, the driver board 51 of the present embodiment is a flexible circuit driver board 51, which has good foldability. After the light source assembly 50 is applied to the backlight module, the signal lead portion 513 can be folded to the non-light-emitting side of the backlight module, thereby saving the module volume of the backlight module.

[0100] like Figure 2 As shown, the lamp assembly 52 of the embodiment of the present invention is arranged on one side of the first surface 511A, and includes a plurality of lamp wicks 521 arranged along the first direction. Figure 1 As shown, the lamp wick 521 of the embodiment of the present invention includes a first lamp wick surface 5211 close to and parallel to the first surface 511A, a second lamp wick surface 5212 opposite to the first lamp wick surface 5211, a lamp wick light-emitting surface 5213 perpendicular to the first lamp wick surface 5211, and a lamp wick non-light-emitting surface 5214 opposite to the lamp wick light-emitting surface 5213. The lamp wick of the embodiment of the present invention is a side-entry light-emitting type, that is, from Figure 1 The non-light-emitting surface 5214 of the wick emits light toward the light-emitting surface 5213 of the wick, or in other words, along Figure 2 Light emerges in the second direction shown.

[0101] like Figure 1 and Figure 2 As shown, the light source assembly 50 according to the embodiment of the present invention further includes an adhesive layer 53 disposed on one side of the first surface 511A.

[0102] The adhesive layer 53 includes a first side portion 531 and a second side portion 532 extending along a first direction. The first side portion 531 is farther away from the signal lead-out portion 513 than the second side portion 532 .

[0103] The adhesive layer 53 has a first opening 533 at the position of each wick 521 , and the orthographic projection of the first opening 533 on the first surface 511A covers the orthographic projection of the wick 521 on the first surface 511A.

[0104] The first opening 533 includes:

[0105] A first boundary 5331 and a second boundary 5332 extend along a first direction. The first boundary 5331 is farther away from the signal lead-out portion 513 than the second boundary 5332 . The second boundary 5332 includes a protruding portion away from the first boundary 5331 .

[0106] In the embodiment of the present invention, the adhesive layer 53 of the light source assembly 50 is designed to have a first opening 533 at the position corresponding to the lamp wick 521. On the basis of using the first opening 533 to leak the lamp wick 521, the shape of the first opening 533 is designed to be a convex structure extending from the first boundary 5331 to the second boundary 5332. For example, the extending direction of the convex structure of the first opening 533 of the embodiment of the present invention is the same as the light emitting direction of the lamp wick 521. The light emitting direction of the first opening 533 is along Figure 2 As shown, the extension of the second boundary 5332 is a protruding structure extending from the first boundary 5331 toward the second boundary 5332 , which increases the opening area of ​​the surface perpendicular to the light-emitting surface of the edge-entry light source, thereby improving the luminous brightness of the light source assembly 50 .

[0107] In a specific embodiment, Figure 3 The first opening 533 structure of the lamp assembly 52 of the related art is shown. The first opening 533 is a rectangular structure. The orthographic projection of the first opening 533 and the lamp core 521 forms a circular structure. As shown in Table 1, the light source assembly 50 has the same structure except for the opening structure. The full screen brightness of the light source assembly 50 is 98%, and the lamp port brightness is 97%. Figure 2 The first opening 533 shown is relatively Figure 1 The opening area of ​​the first opening 533 is increased. As shown in Table 1, the full screen brightness of the light source assembly 50 designed with the first opening 533 is 100%, the lamp base brightness is 100%, and the luminous brightness of the light source assembly 50 is improved.

[0108] Table 1

[0109] Light strip tape Shape design Full screen brightness Lamp brightness Black and white light glue Retractable design 98％ 97％ Black and white light glue Single-sided concave design 100％ 100％

[0110] In an optional embodiment, if Figure 2 As shown, the closer to the edge of the wick 521 along the first direction, the smaller the distance between the boundary of the wick 521 and the second boundary 5332. That is, Figure 2The first opening 533 of the adhesive layer 53 is shown as a single-sided arc-shaped structure. The first opening 533 has a larger opening in the second direction at the center of the wick 521 and a smaller opening in the second direction at the edge of the wick 521, resulting in a structure with smaller openings on both sides and a larger opening in the center. This increases the opening area to improve the brightness of the light source assembly 50. Exemplarily, the distance between the second edges 5332 of the first opening 533, i.e., the opening depth of the second edges 5332 of the first opening 533 in the second direction, is 0.15-0.25 mm, and can be designed by those skilled in the art based on actual applications.

[0111] In an embodiment of the present invention, there is a gap between the second boundary 5332 of the first opening 533 and the second edge 532 of the adhesive layer 53. Exemplarily, the length of the adhesive layer 53 at the gap position in the second direction is ≥0.4 mm, ensuring the fixing performance of the adhesive layer 53 at the non-opening position.

[0112] In an optional embodiment, based on Figure 2 The single-sided protruding first opening 533 is designed, and the first opening 533 also includes a third boundary 5333 and a fourth boundary 5334 that are perpendicular to the first boundary 5331 and are opposite to each other. The distance between the third boundary 5333 and the fourth boundary 5334 is greater than the length of the wick 521 in the first direction, and the length of the third boundary 5333 and / or the fourth boundary 5334 in the second direction is greater than the length of the wick 521 in the second direction, that is, the orthographic projection of the first opening 533 on the first base layer 511 completely covers the orthographic projection of the wick 521 on the first base layer 511.

[0113] In an optional embodiment, if Figure 4 As shown, the two ends of the raised part of the second boundary 5332 form a first break DK01, and the length of the first break DK01 in the first direction is less than or equal to the length of the wick 521 in the first direction. The first break DK01 formed by the second boundary 5332 is used to enhance the brightness of the light in the strong light area of ​​the wick 521.

[0114] For example, Figure 4 As shown in the enlarged schematic diagram, the second boundary 5332 includes a first sub-boundary 53321 connected to the third boundary 5333, a second sub-boundary 53322 connected to the fourth boundary 5334, a third sub-boundary 53323 farther from the signal lead-out portion 513 than the first sub-boundary 53321 in the second direction, a fourth sub-boundary 53324 connecting the first sub-boundary 53321 and the third sub-boundary 53323, and a fifth sub-boundary 53325 connecting the second sub-boundary 53322 and the third sub-boundary 53323.

[0115] In this embodiment, the end of the first sub-boundary 53321 away from the third boundary 5333 and the end of the second sub-boundary 53322 away from the fourth boundary 5334 form a first fracture DK01, and the length of the first fracture DK01 in the first direction is less than or equal to the length of the wick 521 in the first direction, thereby forming a raised opening covering part of the light-emitting area of ​​the wick 521.

[0116] Based on the structural design of the single-boundary raised opening of the first opening 533 , the embodiment of the present invention further designs a second opening 534 .

[0117] In an optional embodiment, if Figure 4 As shown, the adhesive layer 53 has a second opening 534 formed on the second side 532 at a position corresponding to each of the wicks 521. The second opening 534 includes a convex portion close to the first side 531. That is, the convex portion of the second opening extends from the second side 532 toward the first side 531.

[0118] The distance between the opening center line of the second opening 534 parallel to the second direction and the center line of the wick 521 parallel to the second direction is less than or equal to 1 / 10 of the length of the wick 521 in the first direction, that is, the opening centers of the first opening 533 and the second opening 534 are set correspondingly to ensure the maximum improvement of the lighting effect.

[0119] like Figure 4 As shown, the first opening 533 and the second opening 534 corresponding to the same wick 521 are arranged relative to each other, and the opening of the first opening 533 protrudes upward. The first opening 533 is an opening opened at the position of the wick 521, and the second opening 534 is opened at the edge position of the self-adhesive layer 53 away from the signal lead-out part 513. The opening of the second opening 534 protrudes downward. The combined design of the first opening 533 and the second opening 534 increases the opening area of ​​the surface perpendicular to the light-emitting surface of the side-entry light-emitting light source, thereby improving the luminous brightness of the light source assembly 50.

[0120] In an optional embodiment, if Figure 4 As shown, two ends of the raised portion of the second boundary 5332 form a first break DK01, and the length of the first break DK01 in the first direction is less than or equal to the length of the wick 521 in the first direction;

[0121] The two ends of the raised portion of the second opening 534 corresponding to the second edge 532 form second cutouts DK02. The length of the second cutouts DK02 in the first direction is less than or equal to the length of the first cutout DK01 in the first direction. In other words, the overall length of the second opening 534 is less than the overall length of the first opening 533. The second opening 534 is used to enhance the brightness of the area of ​​the wick 521 where the light is most intense.

[0122] In an optional embodiment, if Figure 4 As shown, there is a gap between the second boundary 5332 of the first opening 533 and the opening boundary of the second opening 534, and the length of the adhesive layer 53 at the gap position in the second direction is ≥0.4mm. In this embodiment, the first opening 533 and the second opening 534 are not connected, and there is a gap between them.

[0123] In another optional embodiment, as Figure 5 and Figure 6 As shown, the second opening 534 extends to the first opening 533, and the second opening 534 is connected to the first opening 533, and the second opening 534 and the first opening 533 are connected to form a first opening intersection OA1 and a second opening intersection OA2 respectively, and the distance between the first opening intersection OA1 and the second opening intersection OA2 in the first direction is less than the length of the first break DK01 in the first direction.

[0124] In this embodiment, the first opening 533 and the second opening 534 are connected, and the second opening 534 may have Figure 5 and Figure 6 The different opening area designs are shown, but the opening length of the second opening 534 in the first direction is smaller than the opening length of the first opening 533 in the first direction, so that the second opening 534 can be used to further enhance the luminous brightness of the light source assembly 50 by directing the light from the strong light area of ​​the wick 521 .

[0125] The length of the second opening 534 in the first direction is different from the length of the first opening 533 in the first direction. Therefore, in an optional embodiment, as shown in FIG. Figure 5 and Figure 6 As shown, a light emitting focus OO' is formed between the non-light emitting surface of the wick and the wick center line of the wick 521 parallel to the second direction;

[0126] The angle α formed by the first opening boundary OA1 and the light output focus OO' is less than or equal to 45°;

[0127] The angle α formed between the second opening boundary OA2 and the light emitting focus OO' is less than or equal to 45°. This arrangement allows the second opening 534 to be located in the strong light area of ​​the light emitted by the lamp core 521, ensuring uniform brightness of the backlight module used by the light source assembly 50.

[0128] Based on the structural design of the different openings of the adhesive layer 53 in the above embodiment, the inventor further designs the layer structure of the adhesive layer 53 to further enhance the luminous brightness of the light source assembly 50. The structural design of the adhesive layer 53 in the embodiment of the present invention is as follows:

[0129] In an optional embodiment, if Figure 7 and Figure 8 As shown, the bonding layer 53 includes:

[0130] The PET layer 54 includes a third surface 54A and a fourth surface 54B disposed opposite to each other, wherein the third surface 54A is closer to the first surface 511A than the fourth surface 54B;

[0131] A first glue layer 55 disposed on the third surface 54A;

[0132] A second glue layer 56 disposed on the fourth surface 54B;

[0133] At least the third surface 54A of the PET layer 54 is white, and at least the fourth surface 54B of the PET layer 54 is white.

[0134] The above embodiment of the present invention utilizes the principle that white light reflects more strongly, and changes the black and white surface of the adhesive layer 53 in the related art to white third surface 54A and fourth surface 54B of the PET layer 54, forming a high reflectivity structure, thereby improving the luminous brightness of the light source assembly 50.

[0135] The solution of "at least the third surface 54A of the PET layer 54 is white, and at least the fourth surface 54B of the PET layer 54 is white" described in the embodiment of the present invention includes a solution in which the entire layer structure of the PET layer 54 is white, and also includes a solution in which the layer structure of a part of the thickness of the PET layer 54 is white. The design criterion is that both sides of the PET layer 54 attached to the first glue layer 55 and the second glue layer 56 are white, so as to realize a bonding layer 53 structure with high optical reflectivity.

[0136] In an optional embodiment, if Figure 7 As shown, the PET layer 54 is a transparent substrate.

[0137] The PET layer 54 includes:

[0138] a first silk-screen layer 57 located between the first glue layer 55 and the third surface 54A; and

[0139] The second silk-screen layer 58 is located between the second glue layer 56 and the fourth surface 54B, and the materials of the first silk-screen layer 57 and the second silk-screen layer 58 are silk-screen white ink.

[0140] In an embodiment of the present invention, a silk-screen printing process is performed on the third surface 54A and the fourth surface 54B of the transparent PET layer 54 to form a silk-screen white oil layer, that is, the first silk-screen layer 57 and the second silk-screen layer 58 form a partially thick white PET layer 54 to form a high reflectivity structure. In an optional embodiment, the adhesive layer 53 also includes a second reflection-enhancing layer disposed between the first silk-screen layer 57 and the first glue layer 55. Exemplarily, when the light source assembly 50 is applied to a backlight module, the third surface 54A is closer to the light guide plate 30 than the fourth surface 54B. In this embodiment, a second reflection-enhancing layer is provided on the third surface 54A of the PET layer 54 closer to the light guide plate 30, and the optical reflectivity is further improved by using the second reflection-enhancing layer with high reflectivity.

[0141] In an optional embodiment, if Figure 8 As shown, the PET layer 54 is a white substrate. In this embodiment, the transparent PET layer 54 of the related art is added with color to form a white film layer, that is, the entire film structure of the PET layer 54 is white, forming a high reflectivity structure.

[0142] Furthermore, in an optional embodiment, the adhesive layer 53 also includes a first reflection-enhancing layer (not shown in the figure) arranged between the third surface 54A and the first glue layer 55. For example, when the light source assembly 50 is applied to the backlight module, the third surface 54A is closer to the light guide plate 30 than the fourth surface 54B. In this embodiment, the first reflection-enhancing layer is arranged on the third surface 54A of the PET layer 54 closer to the light guide plate 30. For example, the reflection-enhancing material of the first reflection-enhancing layer is organic silicone or ultra-white paint, and the main component of the ultra-white paint is barium sulfate. The high-reflectivity first reflection-enhancing layer is used to further improve the optical reflectivity.

[0143] Based on the adhesive layer 53 with different opening structures in the above embodiment and the adhesive layer 53 structure with high reflectivity, the brightness values ​​obtained from the test are shown in Table 2 below:

[0144] Table 2

[0145]

[0146] It can be seen from Table 2 above that the embodiment of the present invention only improves the layer structure design of the adhesive layer 53, and the other designs remain unchanged. The average full-screen brightness and the average lamp brightness of the embodiment of the present invention are improved compared with the performance of the related art adhesive layer 53 using black and white glue. Therefore, the opening design of the adhesive layer 53 of the embodiment of the present invention combined with the opening design of the above embodiment can further improve the brightness design of the light source assembly 50 and the backlight module.

[0147] Based on the above embodiments, the embodiments of the present invention can adopt different combination schemes of different opening designs such as a single first opening 533 design and a double opening design combined with a double-sided white design of the adhesive layer 53. The brightness data of the above different schemes and the double-sided black and white design of the adhesive layer 53 of the related technology combined with the rectangular opening are shown in Table 3 below.

[0148] Table 3

[0149] Adhesive layer Shape design Full screen brightness Lamp brightness Double-sided black and white Rectangular opening 98％ 97％ Double-sided black and white First opening 100％ 100％ Double-sided white First opening 103％～105％ 113％～117％ Double-sided white first opening and second opening 104％～106％ 115％～120％ Double-sided white First opening and small second opening 106％～108％ 120％～125％ Double-sided white First opening and large second opening 108％～110％ 124％～130％

[0150] As shown in Table 3, whether it is a solution of improving a single first opening or a solution of designing the adhesive layer 53 to be black and white on both sides, or a different combination solution formed by combining the adhesive layer 53 with white on both sides and different openings, the brightness of the light source assembly 50 and the brightness of the backlight module can be improved. Therefore, the technical solution of the above embodiment of the present invention has wide adaptability.

[0151] Furthermore, although the opening design of the adhesive layer 53 combined with the opening design of the above embodiment can greatly improve the brightness, there will be a serious problem of the bright band of the lamp port of the backlight module, and there will also be a problem of the high reflectivity lamp glue being unreliable under high temperature and high humidity, and the yellowing of the lamp port being easily highlighted due to aging of the glue. Therefore, the utility model further designs the light source component 50 to solve the above-mentioned problems.

[0152] For the serious problem of the bright band at the lamp socket, in an optional embodiment, the first glue layer 55 is doped with diffusion particles 550, the number of the diffusion particles 550 distributed per unit millimeter area is 10 to 15, and the peeling force of the first glue layer 55 is 1800 to 2400 gf.

[0153] In an embodiment of the present invention, when the light source assembly 50 is applied to the backlight module, the first glue layer 55 is closer to the light guide plate 30 than the second glue layer 56. In this embodiment, diffusion particles 550 are added to the first glue layer 55 on the side closer to the light guide plate 30. The diffusion particles 550 can evenly disperse the light that is incident on the double-sided white adhesive layer 53 from the lamp mouth side, thereby reducing the problem of the lamp mouth being bright.

[0154] For example, the diameter of the scattering particles is 3±0.5um, 1mm 2The number of the added diffusion particles 550 is 10 to 15, the peeling force of the first glue layer 55 and the second glue layer 56 is 1800 to 2400 gf, and the high temperature retention force of the first glue layer 55 and the second glue layer 56 is 0.1 to 0.3 mm. On the basis of ensuring that the peeling force, retention force and other main body properties of the first glue layer 55 remain basically unchanged, the first glue layer 55 has a light scattering function.

[0155] In an optional embodiment, if Figure 9 As shown, the driving board 51 further includes a coating layer 514. The coating layer 514 is located between the first surface 511A and the lamp group 52 near the first surface 511A, and between the first surface 511A and the adhesive layer 53 near the first surface 511A. The coating layer 514 covers the first base layer 511 in its orthographic projection. In this embodiment, the coating layer 514 is used to protect the conductive layer 512 and the first base layer 511 of the driving board 51.

[0156] Regarding the problem that the light source component 50 is prone to yellowing of the lamp holder due to aging of the adhesive layer 53 after being subjected to high temperature and high humidity, in an optional embodiment, the color of the coating layer 514 is light blue with a wavelength range of 475 to 520 nm. The use of a light blue coating layer 514 with a double-sided white adhesive layer 53 can effectively improve the yellowing effect of the lamp holder.

[0157] The embodiment of the present invention has obvious improvements on the brightness of the light source assembly 50 with different color coating layers 514 and different adhesive layer 53 structures and the yellowing of the lamp socket after the HTS (high temperature storage 80℃ 240H) test. The specific data are shown in Table 4 below. It can be seen that the lamp socket effect after high temperature reliability of the double-sided white adhesive layer 53 + light blue coating layer 514 is better than the lamp socket effect after high temperature reliability of the double-sided black and white adhesive layer 53 + white coating layer 514. Therefore, the adhesive layer 53 design of the double-sided white adhesive layer 53 + light blue coating layer 514 of the embodiment of the present invention has wide practicality.

[0158] Table 4

[0159]

[0160] In an optional embodiment, if Figure 1 As shown, the driving board 51 also includes a second base layer 515, which is arranged on the side of the conductive layer 512 away from the first surface 511A, that is, between the first base layer 511 and the second base layer 515 of the conductive layer 512, and the first base layer 511 and the second base layer 515 are used to protect the conductive layer 512.

[0161] exist Figure 1The light source assembly 50 shown, stacked from top to bottom, comprises, in order: a second base layer 515, a conductive layer 512, a first base layer 511, and a coating layer 514. The adhesive layer 53 is disposed on the surface of the coating layer 514 on the side away from the first substrate. That is, the adhesive layer 53 is located on the outermost surface of the driving plate 51. The adhesive layer 53 defines a first opening 533, which allows the coating layer 514 to be exposed on the side away from the first substrate. A wick 521 is disposed at the location of the coating layer 514 on the side away from the first substrate, where the coating layer 514 is exposed through the first opening 533. After the light source assembly 50 of this embodiment is applied to a backlight module, the adhesive layer 53 is bonded and fixed to the light guide plate 30.

[0162] The second embodiment of the present invention provides a backlight module 1, which includes:

[0163] A back plate 10 having a groove, wherein the back plate 10 comprises a bottom wall 101 and a side wall 102;

[0164] A reflective sheet 20 provided on the bottom wall 101;

[0165] The light guide plate 30 is provided on the reflective sheet 20. For example, the injection molding of the light guide plate requires that the color difference uniformity is within 0.012, and the water-boiling warpage of the light guide plate 30 is required to be within 0.4 mm.

[0166] A scattering film material 40 disposed on the light guide plate 30; and

[0167] The light source assembly 50 of the above embodiment of the present invention.

[0168] like Figure 10 As shown, when the light source assembly 50 of the above embodiment is applied to the backlight module 1, the light guide plate 30 and the light source assembly 50 are first fixed, and the adhesive layer 53 of the light source assembly 50 on the side away from the signal lead-out portion 513 is fixed to the surface of the light guide plate 30 on the side away from the reflective sheet 20, and the adhesive layer 53 of the light source assembly 50 on the side close to the signal lead-out portion 513 is fixed to the side wall 102 of the back plate 10. After assembly, the light emitting surface 5213 of the wick 521 and the side wall surface of the light guide plate 30 perpendicular to the side wall 102 are fitted together.

[0169] The optical brightness of the light source assembly 50 of the above embodiment of the present invention is effectively improved. Therefore, combining the data in Table 1, Table 2 and Table 3, it can be seen that after the light source assembly 50 is applied to the backlight module 1, the full-screen brightness of the backlight module 1 is also improved.

[0170] Based on the above-mentioned backlight module 1 combined with the light source assembly 50 , the embodiment of the present invention further designs the light guide plate 30 of the backlight module 1 , thereby further improving the overall brightness of the backlight module 1 .

[0171] In the embodiment of the present invention, the thickness of the adhesive layer 53 of the backlight module 1 ranges from 0.06 mm to 0.085 mm, with an optimal thickness of 0.08 mm being recommended, as this thickness provides the best adhesion effect to the light guide plate 30 .

[0172] In an optional embodiment, the light guide plate 30 includes a fifth surface 30A close to the back plate 10 and a sixth surface 30B away from the back plate 10. Figure 10 As shown, the adhesive layer 53 and the sixth surface 30B are bonded and fixed, as shown in FIG. Figure 11 and Figure 12 As shown, a mesh dot structure 301 is provided in the area corresponding to the display area AA on the fifth surface 30A. The mesh dots of the mesh dot structure 301 decrease in size as the area closer to the light source assembly 50 is obtained. In other words, the mesh dot structure 301 of the present embodiment is provided on the non-bonded surface of the light source assembly 50 and the light guide plate 30, thereby reducing the effect of the bonding surface on light divergence.

[0173] The mesh dot structure 301 of the embodiment of the present invention includes mesh dots of different sizes, and the mesh dot structures 301 at different positions are used to achieve uniform enhancement of light.

[0174] In an optional embodiment, if Figure 11 and Figure 12 As shown, the mesh dot structure 301 includes a first mesh dot area, a second mesh dot area, and a third mesh dot area arranged from the light source assembly 50 to the light guide plate 30. A plurality of first mesh dots 3011 are distributed in the first mesh dot area, a plurality of second mesh dots 3012 are distributed in the second mesh dot area, and a plurality of third mesh dots 3013 are distributed in the third mesh dot area.

[0175] The diameter and depth of the first dot 3011 in the first dot area are smaller than the diameter and depth of the second dot 3012 in the second dot area, and the diameter and depth of the second dot 3012 in the second dot area are smaller than the diameter and depth of the third dot 3013 in the third dot area.

[0176] In the embodiment of the present invention, the direction from the light source assembly 50 to the light guide plate 30 is Figure 2 As shown in the direction from the first boundary 5331 to the second boundary 5332 , that is, each dot of the dot structure 301 is designed to be gradually changed from small to large in the second direction.

[0177] like Figure 11 and Figure 12As shown, the length of the light guide plate 30 in the second direction is L, the dot radius is R, the dot depth is H, and the dot light-facing angle is β. For the dot structures 301 at different locations, the dot radius of the first dot 3011 is R1, the dot depth of the first dot 3011 is H1, and the dot light-facing angle of the first dot 3011 is β1. The dot radius of the second dot 3012 is R2, the dot depth of the second dot 3012 is H2, and the dot light-facing angle of the second dot 3012 is β2. The dot radius of the third dot 3013 is R3, the dot depth of the third dot 3013 is H3, and the dot light-facing angle of the third dot 3013 is β3.

[0178] In an optional embodiment, the first mesh dot area, the second mesh dot area, and the third mesh dot area are evenly distributed in length in the second direction. For example, the first mesh dot area is located at the end of the light guide plate 30 in the second direction, close to the light source assembly 50, that is, the first mesh dot area is located in the head area of ​​the light guide plate 30, which is 1 / 3L away from the light source assembly 50. The second mesh dot area is located in the middle area of ​​the light guide plate 30 in the second direction, and is distributed over a length of 1 / 3L of the light guide plate 30. The third mesh dot area is located in the tail area of ​​the light guide plate 30 in the third direction, and is distributed over a length of 1 / 3L of the light guide plate 30. Parameters of the mesh dot structure 301 in different areas of the light guide plate 30 are shown in Table 5.

[0179] Table 5

[0180]

[0181] The embodiment of the present invention is based on the dot structure 301 shown in Table 5, and the brightness parameters of the light guide plate 30 of the related art are shown in Table 6 below:

[0182] Table 6

[0183] Network structure brightness Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 mean Proportion Regular outlets Average brightness 9304 9525 9598 9452 9554 9486.6 100.00％ Regular outlets Center brightness 10150 10200 10390 9993 10380 10222.6 100.00％ Large and small outlets Average brightness 9933 9940 9960 9917 9907 9931.8 104.69％ Large and small outlets Average brightness 10660 10730 10660 10590 10660 10660 104.28％

[0184] As shown in Table 6, the measured brightness of the gradient structure of large and small dots in the embodiment of the present invention is increased to 103% to 105%, which is significantly improved compared with the brightness of the uniform dots in the related art.

[0185] In an optional embodiment, if Figure 13 and Figure 14 As shown, a scattering structure 302 is provided in the area corresponding to the display area AA on the sixth surface 30B. Figure 14 As shown, the sixth surface 30B of this embodiment is the surface of the light guide plate 30 close to the adhesive layer 53 , and the scattering structure 302 is disposed in the display area AA but not in the non-display area NA.

[0186] like Figure 13 and Figure 14As shown, the scattering structure 302 is a plurality of tooth-shaped protrusions extending from the fifth surface 30A to the sixth surface 30B. The plurality of tooth-shaped protrusions are arranged in an array along a first direction, and each tooth-shaped protrusion extends along a second direction.

[0187] like Figure 13 As shown, the arrangement direction of the multiple tooth-shaped protrusions is the same as the arrangement direction of the wick 521, and the extension direction of each tooth-shaped protrusion is perpendicular to the arrangement direction of the wick 521, that is, each tooth-shaped protrusion extends along the second direction, and the scattering structure 302 is used to further improve the brightness of the backlight module 1.

[0188] Considering the process error during the manufacturing process, there may be a problem of poor brightness uniformity at different positions of the light guide plate 30. Therefore, in an optional embodiment, as shown in FIG. Figure 13 and Figure 14 As shown, the scattering structure 302 is provided with first compensation dots 303 on a side away from the fifth surface 30A. The first compensation dots 303 are distributed in the display area AA of the light guide plate 30 where the brightness is lower than the preset brightness.

[0189] like Figure 13 and Figure 14 As shown, the first compensation dot 303 is designed for the local area of ​​the light guide plate 30 where the brightness uniformity of the dot surface is poor, thereby improving the local brightness of the light guide plate 30 and improving the overall brightness and display effect of the module display area AA. The laser filling radius of the first compensation dot 303 is R0. For example, the diameter of the first compensation dot 303 formed after laser filling is 40±10um.

[0190] The laser compensation depth of the first compensation dot 303 is H0, that is, the vertical distance between the highest point of the first compensation dot 303 and the sixth surface 30B. For example, H0=1.5±0.5um.

[0191] The depth of the scattering structure 302 of the first compensation dot 303 is H1, ie, the vertical distance between the highest point and the lowest point of the tooth-shaped protrusion of the scattering structure 302, where H1 = 0.5-1.5 μm.

[0192] Table 7

[0193]

[0194] The embodiment of the present invention utilizes the scattering structure 302 to compensate for the brightness of the backlight module 1. The brightness data for the backlight module with the large and small dot structure and the combination of the large and small dot structure + the first compensation dot 303 according to the embodiment of the present invention are shown in Table 5. The test data in Table 5 indicate that the brightness data for the combination of the large and small dot structure + the first compensation dot 303 according to the embodiment of the present invention are both improved. The arrangement of the first compensation dot 303 on the sixth surface 30B, in addition to the large and small dot structure, improves the brightness by 1-2%. Therefore, the solution of the large and small dot + the first compensation dot 303 can improve the brightness of the backlight module 1 according to the related art by 4-7%, making it suitable for a wide range of scenarios.

[0195] Based on the principle of LED cross light, such as Figure 15 As shown, an optical dark area LT02 appears between adjacent wicks 521, which may cause an optical dark area LT02 and an optical bright area LT01 to appear at the lamp port, resulting in a poor display problem. To solve this problem, in an optional embodiment, a second compensation dot 304 is provided in the area of ​​the fifth surface 30A corresponding to the non-display area NA. The second compensation dot 304 is provided at the interval position of adjacent wicks 521, and the maximum length of the second compensation dot 304 in the first direction is greater than the interval length of the adjacent wicks 521 in the first direction, as shown in FIG. Figure 16 As shown, the second compensation dots 304 are not provided at the position directly in front of each wick 521 on the fifth surface 30A, and the second compensation dots 304 are provided between the gaps between adjacent wicks 521 on the fifth surface 30A, so as to utilize the second compensation dots 304 at adjacent positions to compensate for the Figure 15 Light compensation is performed at the position of the luminous dark area LT02 shown in FIG. Figure 16 The dark area LT02 shown can also be compensated to improve the display uniformity of the backlight module 1 .

[0196] In this embodiment, the second compensation dots 304 are arranged on the fifth surface 30A, that is, they are arranged on a different surface from the first compensation dots 303 and are arranged in a different area of ​​the same surface as the dot structure 301. The orthographic projection of the second compensation dots 304 on the fifth surface 30A is a protruding structure extending from the boundary of the light guide plate 30 close to the wick 521 toward the side away from the wick 521, as shown in FIG. Figure 16 As shown, the dot boundaries of the second compensation dots 304 are located in the non-display area NA, so as to avoid damaging the dot structure 301 disposed on the fifth surface 30A in the display area AA.

[0197] For example, the orthographic projection of the second compensation dot on the fifth surface 30A is an arc structure, the distance between the vertex of the arc and the boundary of the non-display area NA is ≥ 0.1 mm, the dot diameter of the second compensation dot 304 is 35±3 μm, that is, twice the vertical distance between the highest point of the second compensation dot 304 and the boundary of the light guide plate 30 is 35±3 μm, the dot shape of the second compensation dot 304 is "n" shaped, and the density of the second compensation dot 304 is 1 mm. 2 Arrange 1 to 1.5 to achieve the purpose of uniform brightness of the light source, and those skilled in the art will design it according to actual application.

[0198] Another embodiment of the present invention provides a display module, such as Figure 17 As shown, the display module includes:

[0199] The backlight module 1 described in any one of the first embodiments of the present utility model;

[0200] A first polarizer 2 provided on a side of the backlight module 1 away from the back plate 10;

[0201] a display panel 3 disposed on the first polarizer 2;

[0202] The second polarizer 4 is provided on the display panel 3. For example, the first polarizer 2 and the second polarizer 4 require edge crack control of ≤50 μm.

[0203] According to the data in Tables 1 to 5 above, when the backlight module 1 of the above embodiment of the present invention is applied to a display module, the display brightness of the assembled display module will be improved.

[0204] In one optional embodiment, the hue parameter of the first polarizer 2 is 2.55 to 2.65. In another optional embodiment, the hue parameter of the second polarizer 4 is 2.55 to 2.65. In the embodiment of the present invention, the hue parameters of the first polarizer 2 and the second polarizer 4 are designed. The hue of the polarizer with a hue parameter between 2.55 and 2.65 is bluish. After testing, the brightness of the resulting backlight module 1 can be increased by 3%.

[0205] In an optional embodiment, the process of manufacturing the polarizer includes a washing stage, a swelling stage, a dyeing stage, a color correction stage, a heating stage, and a dehydration stage. In this embodiment, during the dyeing stage, the PVA film is stretched using iodine and potassium iodide solution.

[0206] During the color-correction stage, the PVA film is color-corrected using a potassium iodide solution. The concentration of the potassium iodide solution during the color-correction stage is lower than that during the dyeing stage. During this stage, the iodide ions in the potassium iodide solution are introduced into the gaps between the I3 complexes in the PVA film. Due to the low concentration of the potassium iodide solution during the color-correction stage, the amount of I5 complex generated is reduced. During the heating and dehydration stages of the PVA film, the increased temperature destroys the I5 complex, decomposing some of the I5 complex into I3 complexes, further reducing the proportion of the I5 complex. The resulting polarizer has a bluish hue, which can increase the overall module brightness by 3%.

[0207] The brightness and lamp socket effects of the display modules formed by combining different solutions of the above embodiments of the present invention are shown in Table 8 below:

[0208] Table 8

[0209]

[0210] Based on Table 8 above, it can be seen that the various combinations of the embodiments of the present invention can be designed according to different application requirements, for example:

[0211] The combination of the dot structure of the light guide plate 30 and the first compensation dot on the sixth surface 30B can increase the brightness by 4% to 7%. While maintaining the overall brightness of the backlight module 1, the reflective sheet 20 can be replaced with RMF-80 instead of ESR-80V2 to reduce costs. This can save 1.2 yuan per piece of the backlight module 1, reducing manufacturing costs.

[0212] The combination of the light guide plate 30 dot structure + the first compensation dot on the sixth surface 30B + the double-sided white adhesive layer + the first and second openings in the adhesive layer + the light blue coating layer + the blue-tinted POL color temperature can increase brightness by 20%. When the customer's brightness requirement is 600-800 nits, the amount of scattering film material 40 in the backlight module 1 can be reduced, saving 0.35 yuan per piece of the backlight module 1 and reducing manufacturing costs.

[0213] If the customer is not particularly concerned about the lamp socket effect but has a high requirement for the brightness of the backlight module 1, they can choose a combination of large and small dots on the light guide plate + first compensation dots on the sixth surface + double-sided white adhesive layer + first and second openings on the adhesive layer + white coating layer + blue POL color temperature. The brightness of the display module can exceed 1000 nits.

[0214] If customers are looking for both the brightness and the lamp port effect of the display module, they can choose the large and small dots of the light guide plate + the first compensation dot on the sixth surface + double-sided white adhesive layer + the first and second openings of the adhesive layer + a light blue coating layer + a POL color temperature that is blue. The brightness of the display module can reach 900nit, and the lamp port effect of the display module is better.

[0215] In summary, those skilled in the art can adopt different scheme combinations according to different design requirements to ensure better display effects while meeting the design requirements.

[0216] Another embodiment of the present invention provides a display device, comprising the display module described in the above embodiment of the present invention. The display device can be applied to any product or component with a display function, such as electronic paper, mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo frames, and navigation systems, without limitation in this embodiment.

[0217] In the description of the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0218] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to enumerate all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A light source assembly, characterized in that: The light source assembly includes: a driving board and a lamp group disposed on one side surface of the driving board and electrically connected to the driving board and extending along a first direction. The driving board includes: a first substrate layer having a first surface and a second surface; A conductive layer connected to the lamp group is provided on one side of the second surface; and A signal lead-out portion electrically connected to the conductive layer, wherein the signal lead-out portion extends in a second direction perpendicular to the first direction; The lamp group is arranged on one side of the first surface and includes a plurality of lamp wicks arranged along a first direction; The light source assembly further includes an adhesive layer disposed on one side of the first surface, the adhesive layer including a first side portion and a second side portion extending along a first direction, the first side portion being farther away from the signal lead-out portion than the second side portion; The adhesive layer is provided with a first opening at the position of each of the wicks, wherein the orthographic projection of the first opening on the first surface covers the orthographic projection of the wick on the first surface. The first opening includes a first boundary and a second boundary extending along a first direction. The first boundary is farther away from the signal lead-out portion than the second boundary. The second boundary includes a protruding portion farther away from the first boundary.

2. The light source assembly according to claim 1, wherein: The closer to the edge of the wick along the first direction, the smaller the distance between the boundary of the wick and the second boundary. There is a gap between the second boundary and the second side.

3. The light source assembly according to claim 2, wherein: Two ends of the raised portion of the second boundary form a first fracture, and the length of the first fracture in the first direction is less than or equal to the length of the wick in the first direction; The first opening further includes a third boundary and a fourth boundary perpendicular to the first boundary and arranged opposite to each other, wherein the distance between the third boundary and the fourth boundary is greater than the length of the wick in the first direction. The length of the third boundary or the fourth boundary in the second direction is greater than the length of the wick in the second direction.

4. The light source assembly according to claim 2, wherein: The adhesive layer has a second opening at a position on the second side corresponding to each of the wicks. The second opening includes a raised portion close to the first edge; A distance between a center line of the second opening parallel to the second direction and a center line of the wick parallel to the second direction is less than or equal to 1 / 10 of a length of the wick in the first direction.

5. The light source assembly according to claim 4, wherein: Two ends of the raised portion of the second boundary form a first fracture, and the length of the first fracture in the first direction is less than or equal to the length of the wick in the first direction; Two ends of the raised portion of the second opening corresponding to the second edge position form a second break, and the length of the second break in the first direction is less than or equal to the length of the first break in the first direction.

6. The light source assembly according to claim 4, wherein: There is a gap between the second edge of the first opening and the opening edge of the second opening, and the length of the adhesive layer in the second direction at the gap position is ≥0.4 mm.

7. The light source assembly according to claim 5, wherein: The second opening extends to the first opening, and the second opening is communicated with the first opening; The second opening and the first opening are connected to form a first opening boundary and a second opening boundary respectively. The distance between the first opening boundary and the second opening boundary in the first direction is smaller than the length of the first break in the first direction.

8. The light source assembly according to claim 7, wherein: The wick comprises a first wick surface in contact with the first surface, a second wick surface opposite to the first wick surface, a wick light-emitting surface perpendicular to the first wick surface, and a wick non-light-emitting surface opposite to the wick light-emitting surface; A light emitting focus is formed between the non-light emitting surface of the wick and the wick center line parallel to the second direction; The angle formed by the intersection of the first opening and the light output focus is less than or equal to 45°; The angle formed by the second opening boundary and the light-emitting focus is less than or equal to 45°.

9. The light source assembly according to claim 1, wherein: The adhesive layer comprises: The PET layer includes a third surface and a fourth surface disposed opposite to each other, wherein the third surface is closer to the first surface than the fourth surface; a first glue layer disposed on the third surface; a second glue layer disposed on the fourth surface; Wherein, at least the third surface of the PET layer is white, and at least the fourth surface of the PET layer is white.

10. The light source assembly according to claim 9, wherein: The PET layer is a white substrate; and / or The adhesive layer further includes a first reflection-enhancing layer arranged between the third surface and the first glue layer.

11. The light source assembly according to claim 9, wherein: The PET layer is a transparent substrate, The PET layer includes: a first silk-screen layer located between the first glue layer and the third surface; and The second silk-screen layer is located between the second glue layer and the fourth surface, and the material of the first silk-screen layer and the second silk-screen layer is silk-screen white oil.

12. The light source assembly according to claim 11, wherein: The adhesive layer further includes: a second reflection-enhancing layer arranged between the first silk-screen layer and the first glue layer.

13. The light source assembly according to claim 9, wherein: The first glue layer is doped with diffusion particles, the number of the diffusion particles distributed per unit millimeter area is 10 to 15, and the peeling force of the first glue layer is 1800 to 2400 gf.

14. The light source assembly according to claim 1, wherein The driving board further includes a coating layer, the coating layer being located between the first surface and the lamp group close to the first surface, and between the first surface and the adhesive layer close to the first surface, and the orthographic projection of the coating layer on the first base layer covering the first base layer. and / or The color of the coating layer is light blue, and the wavelength range is 475-520nm.

15. A backlight module, characterized in that: The backlight module includes: a back plate having a groove, the back plate comprising a bottom wall and side walls; a reflective sheet disposed on the bottom wall; a light guide plate disposed on the reflective sheet; A scattering film material provided on the light guide plate; and The light source assembly according to any one of claims 1 to 14, wherein the adhesive layer on the side of the light source assembly away from the signal lead-out portion is fixed to the surface of the light guide plate on the side away from the reflective sheet, the adhesive layer on the side of the light source assembly close to the signal lead-out portion is fixed to the side wall of the back panel, and the light-emitting surface of the wick is fitted with the side wall surface of the light guide plate perpendicular to the side wall.

16. The backlight module according to claim 15, wherein: The light guide plate includes a fifth surface close to the back plate and a sixth surface away from the back plate. A mesh dot structure is provided in an area corresponding to the display area on the fifth surface, and the mesh dots of the mesh dot structure are smaller as they are closer to the light source assembly.

17. The backlight module according to claim 16, wherein: The mesh dot structure includes a first mesh dot area, a second mesh dot area and a third mesh dot area arranged from the light source assembly toward the light guide plate. The diameter and depth of the first dots in the first dot area are smaller than those of the second dots in the second dot area. The diameter and depth of the second dots in the second dot area are smaller than those of the third dots in the third dot area.

18. The backlight module according to claim 17, wherein: A scattering structure is provided in an area corresponding to the display area on the sixth surface, and the scattering structure is a plurality of tooth-shaped protrusions extending from the fifth surface to the sixth surface. The plurality of tooth-shaped protrusions are arranged in an array along a first direction, and each tooth-shaped protrusion extends along a second direction.

19. The backlight module according to claim 18, wherein: A first compensation dot is provided on a side of the scattering structure away from the fifth surface, and the first compensation dot is distributed in a display area of ​​the light guide plate where the brightness is smaller than a preset brightness.

20. The backlight module according to claim 16, wherein: The area of ​​the fifth surface corresponding to the non-display area is provided with second compensation dots. The second compensation network points are arranged at intervals between adjacent wicks, and the maximum length of the second compensation network points in the first direction is greater than the interval length between adjacent wicks in the first direction. The orthographic projection of the second compensation point on the fifth surface is a protruding structure extending from the boundary of the light guide plate close to the lamp core toward a side away from the lamp core.

21. A display module, characterized in that: The display module includes: The backlight module according to any one of claims 15 to 20; a first polarizer disposed on a side of the backlight module away from the back plate; a display panel disposed on the first polarizer; A second polarizer is disposed on the display panel.

22. The display module according to claim 21, wherein: The hue parameter of the first polarizer is 2.55 to 2.65, and / or The hue parameter of the second polarizer is 2.55-2.

65.

23. A display device, characterized in that: The display device comprises the display module according to any one of claims 21 to 22.

Images