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

Abstract

The invention 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 present invention 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 the OLED (organic light-emitting diode) display module of the related technology has reached more than 1000 nit, and the local instantaneous brightness peak has even reached 2000 nit. The LCD (liquid crystal) display module needs to continue to improve the product brightness specifications to narrow the brightness gap with OLED display products. Summary of the invention

[0003] An object 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 object, the present invention adopts the following technical solutions:

[0005] A 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 comprises:

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

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

[0009] A signal lead-out portion electrically connected to the conductive layer, the signal lead-out portion extending 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 has a first opening at the position of each of the wicks, and 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, and the second boundary includes a protruding portion 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, the two ends of the raised portion of the second boundary form a first break, and the length of the first break in the first direction is less than or equal to the length of the wick in the first direction; the first opening also includes a third boundary and a fourth boundary that are perpendicular to the first boundary and are 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 has 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 direction;

[0020] A distance between an opening center line of the second opening parallel to the second direction and a wick 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 break, and the length of the first break 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 edge of the first opening and the opening edge 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, and 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 affixed to 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 first opening boundary and the light output focus is less than or equal to 45°;

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

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

[0031] The PET layer comprises a third surface and a fourth surface which are arranged 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 enhancement 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 disposed 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 10-15, and the peeling force of the first glue layer is 1800-2400 gf.

[0044] In an optional embodiment, the driving board further includes a coating layer, the coating layer is 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 covers 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, the backlight module comprising:

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

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

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

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

[0052] The light source assembly described in the first aspect of the present invention, 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 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.

[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 dot structure is arranged in an area corresponding to the display area on the fifth surface, and the dots of the 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 dots are smaller than those of the second dots, and the diameter and depth of the second dots are smaller than those of the third 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 a region of the sixth surface corresponding to the display area, 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 disposed 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 less than a preset brightness.

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

[0062] The second compensation dots are arranged at intervals between adjacent wicks, and the maximum length of the second compensation dots 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 grid 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 direction 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 2.55-2.65, 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 present invention are as follows:

[0072] The embodiment of the present invention designs the first opening of the adhesive layer of the light source assembly corresponding to the position of the wick. On the basis of utilizing the first opening to leak the wick out, the shape of the first opening is designed to be a protruding structure extending from the first boundary toward the second boundary, thereby increasing the opening area of ​​the light output of the light source, thereby improving the luminous brightness of the light source assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The specific implementation modes of the present invention are further described in detail below in conjunction with 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 invention;

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

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

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

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

[0080] Figure 7 A schematic diagram showing a layer structure in which both sides of the adhesive layer of an embodiment of the present invention are white;

[0081] Figure 8 Another schematic diagram showing the structure of the adhesive layer in accordance with an embodiment of the present invention, in which both sides are white;

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

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

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

[0085] Fig.12 Show Fig.11 A schematic diagram of the layer structure of the dot structure of the light guide plate;

[0086] Fig.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] Fig.14 Show Fig.13 Schematic diagram of the layer structure of the light guide plate with a scattering structure;

[0088] Fig.15 A schematic diagram showing the light rays of the dark area and the bright area of ​​the light source assembly of the related art;

[0089] Fig.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] Fig.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 explain the present invention more clearly, the present invention is further described below in conjunction with embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and the protection scope of the present invention should not be limited thereto.

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

[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 disposed on a 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 present invention 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 board 51 described in the embodiment of the present invention includes:

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

[0097] A conductive layer 512 connected to the lamp group 52 disposed on one side of the second surface 511B; 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] Exemplarily, the driving board 51 of the embodiment of the present invention is a flexible circuit driving board 51, which has good folding performance. After the light source assembly 50 is applied to the backlight module, the signal lead-out 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 disposed on one side of the first surface 511A, and includes a plurality of lamp wicks 521 arranged along a first direction. Figure 1 As shown, the wick 521 of the embodiment of the present invention comprises a first wick surface 5211 close to and parallel to the first surface 511A, a second wick surface 5212 opposite to the first wick surface 5211, a wick light-emitting surface 5213 perpendicular to the first wick surface 5211, and a wick non-light-emitting surface 5214 opposite to the wick light-emitting surface 5213. The 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, wherein 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 bonding layer 53 of the light source assembly 50 is designed to have a first opening 533 corresponding to the position of the wick 521. On the basis of using the first opening 533 to allow the wick 521 to leak out, 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 in the embodiment of the present invention is the same as the light emitting direction of the 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 first opening 533 and the orthographic projection of the lamp core 521 form a round-shaped 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%. Embodiments of the present invention 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 holder 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-side 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 2 The first opening 533 of the bonding layer 53 shown is a single-sided arc structure, corresponding to the middle position of the wick 521, the first opening 533 has a larger opening in the second direction, and corresponding to the edge position of the wick 521, the first opening 533 has a smaller opening in the second direction, forming a shape with small openings on both sides and a large opening in the middle, and increasing the opening area to improve the luminous brightness of the light source assembly 50. Exemplarily, the distance between the second boundaries 5332 of the first opening 533, that is, the opening depth of the second boundaries 5332 of the first opening 533 in the second direction is 0.15-0.25mm, and those skilled in the art design it according to actual applications.

[0111] In the 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 in the second direction at the gap position 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 as shown, 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 arranged 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 substrate layer 511 completely covers the orthographic projection of the wick 521 on the first substrate 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 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, 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-border 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 at a position of the second side portion 532 corresponding to each of the wicks 521, and the second opening 534 includes a convex portion close to the first side portion 531, that is, the convex portion of the second opening extends from the second side portion 532 to the first side portion 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 relatively 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 on the side away from the signal lead-out portion 513, and 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 convex part of the second opening 534 corresponding to the second side part 532 form a second break DK02, and the length of the second break DK02 in the first direction is less than or equal to the length of the first break DK01 in the first direction. That is, the overall opening length of the second opening 534 is less than the overall length of the first opening 533, and the second opening 534 is used to improve the brightness of the area where the light emitted by the lamp wick 521 is strong.

[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 ≥ 0.4 mm. 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, 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 boundary OA1 and a second opening boundary OA2 respectively, and the spacing between the first opening boundary OA1 and the second opening boundary OA2 in the first direction is smaller 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 transmitting the light in 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, 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 by the second opening boundary OA2 and the light emitting focus OO' is less than or equal to 45°. With this arrangement, the second opening 534 is located in the strong light area of ​​the light emitted by the lamp core 521, so that the brightness of the backlight module used by the light source assembly 50 is uniform.

[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, which can 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 that are 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] Among them, 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 of the related technology to white third surface 54A and fourth surface 54B of the PET layer 54 to form 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 side surfaces 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 comprises:

[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 the 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 side 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 side, 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 layer structure of the PET layer 54 is white, forming a high reflectivity structure.

[0142] Furthermore, in an optional embodiment, the bonding 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. Exemplarily, 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 which is closer to the light guide plate 30. Exemplarily, 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 optical reflectivity is further improved by using the first reflection enhancing layer with high reflectivity.

[0143] Based on the bonding layer 53 with different opening structures in the above-mentioned embodiment combined with the bonding layer 53 structure with high reflectivity, the brightness values ​​obtained by 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 adhesive layer 53 using black and white glue in the related technology. 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 applied.

[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 related technology of the double-sided black and white design of the adhesive layer 53 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 The first opening and the second opening 104％～106％ 115％～120％ Double-sided white The first opening and the 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 double-sided black and white of the adhesive layer 53 as a different combination solution formed by combining the double-sided white of the adhesive layer 53 with different openings, it is possible to improve the brightness of the light source assembly 50 and the brightness of the backlight module. Therefore, the technical solution of the above-mentioned 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-mentioned embodiment can greatly improve the brightness, there will be a serious problem of the bright band of the lamp socket of the backlight module, and there will also be a problem of high reflectivity lamp glue reliability after high temperature and high humidity, and the yellowing of the lamp socket will be easily highlighted due to aging of the glue. Therefore, the present invention further designs the light source assembly 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 the 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 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 2 The 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 performance 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 Fig. 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 close to the first surface 511A, and between the first surface 511A and the adhesive layer 53 close to the first surface 511A, and the coating layer 514 covers the first base layer 511 in the orthographic projection of the first base layer 511. 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 assembly 50 is prone to yellowing of the lamp base 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 base.

[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 in 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 substrate layer 515, which is arranged on the side of the conductive layer 512 away from the first surface 511A, that is, between the first substrate layer 511 and the second substrate layer 515 of the conductive layer 512, and the first substrate layer 511 and the second substrate layer 515 are used to protect the conductive layer 512.

[0161] exist Figure 1 The stacking direction from top to bottom of the light source assembly 50 shown is sequentially the second base layer 515, the conductive layer 512, the first base layer 511 and the coating layer 514, the adhesive layer 53 is arranged on the surface of the coating layer 514 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 is provided with a first opening 533 so as to leak out the coating layer 514 away from the surface of the first substrate, and the wick 521 is arranged at the position of the coating layer 514 leaking out of the first opening 533 away from the surface of the first substrate. After the light source assembly 50 of this embodiment is applied to the backlight module, the adhesive layer 53 is bonded and fixed to the light guide plate 30.

[0162] A second embodiment of the present invention provides a backlight module 1, wherein the backlight module 1 comprises:

[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 disposed on the bottom wall 101;

[0165] The light guide plate 30 is disposed 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 boiling warpage of the light guide plate 30 is within 0.4 mm.

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

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

[0168] like Fig.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 wick 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 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 to 0.085 mm, and the recommended optimal thickness is 0.08 mm, which 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. Fig.10 As shown, the adhesive layer 53 and the sixth surface 30B are bonded and fixed, as shown in FIG. Fig.11 and Fig.12 As shown, a mesh dot structure 301 is provided in the area corresponding to the display area AA on the fifth surface 30A, and the mesh dots of the mesh dot structure 301 are smaller as they are closer to the light source assembly 50. That is, the mesh dot structure 301 in the embodiment of the present invention is provided on the non-bonding side surface of the light source assembly 50 and the light guide plate 30, reducing the influence of the bonding surface of the two on the divergence of light.

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

[0174] In an optional embodiment, if Fig.11 and Fig.12As 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, that 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 Fig.11 and Fig.12 As 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 surface angle is β. For the dot structures 301 at different positions, 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 surface 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 surface 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 surface angle of the third dot 3013 is β3.

[0178] In an optional embodiment, the lengths of the first mesh dot area, the second mesh dot area and the third mesh dot area in the second direction are uniformly distributed. 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 at the head area of ​​the light guide plate 30 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 the distribution length is 1 / 3L of the light guide plate 30, and the third mesh dot area is located in the tail area of ​​the light guide plate 30 in the third direction, and the distribution length is 1 / 3L of the light guide plate 30. The 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 brightness parameters of the light guide plate 30 according to the embodiment of the present invention based on the dot structure 301 shown in Table 5 and 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％ Size Dots Average brightness 9933 9940 9960 9917 9907 9931.8 104.69％ Size Dots 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 Fig.13 and Fig.14 As shown, a scattering structure 302 is disposed in the area corresponding to the display area AA on the sixth surface 30B. Fig.14 As shown, the sixth surface 30B of the present 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 Fig.13 and Fig.14 As 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 Fig.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 enhance 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. Fig.13 and Fig.14 As shown, the scattering structure 302 is provided with a first compensation dot 303 on a side away from the fifth surface 30A, and the first compensation dot 303 is distributed in a display area AA of the light guide plate 30 corresponding to a brightness lower than a preset brightness.

[0189] like Fig.13 and Fig.14As shown, the first compensation dot 303 is designed for the local area of ​​the light guide plate 30 where the dot surface brightness uniformity is poor, thereby improving the local brightness of the light guide plate 30, so as to improve 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±0.5 um.

[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, H1 = 0.5-1.5 um.

[0192] Table 7

[0193]

[0194] The embodiment of the present invention utilizes the scattering structure 302 to compensate the brightness of the backlight module 1. The brightness data of the large and small dot structure backlight module and the combination structure of the large and small dot structure + the first compensation dot 303 of the embodiment of the present invention are shown in Table 5. It can be seen from the test data in Table 5 that the brightness data of the combination structure of the large and small dot structure + the first compensation dot 303 of the embodiment of the present invention are improved. On the basis of the large and small dot structure, the brightness of the structure of the first compensation dot 303 is set on the sixth surface 30B, which is 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 of the related art by 4%-7%, and has a wide range of applicable scenarios.

[0195] Based on the principle of LED cross light, such as Fig.15 As shown, an optical dark area LT02 appears between adjacent lamp wicks 521, which will cause the optical dark area LT02 and the 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, and the second compensation dot 304 is provided at the interval position of the adjacent lamp 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 lamp wicks 521 in the first direction, as shown in FIG. Fig.16 As shown, the second compensation dots 304 are not arranged at the position corresponding to the front of each wick 521 on the fifth surface 30A, and the second compensation dots 304 are arranged between the gaps between the adjacent wicks 521 on the fifth surface 30A, so as to utilize the second compensation dots 304 at the adjacent positions to compensate for the Fig.15Light compensation is performed at the position of the luminous dark area LT02 shown in FIG. Fig.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 on 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 to a direction away from the wick 521. Fig.16 As shown, the dot boundary of the second compensation dot 304 is located in the non-display area NA to avoid damaging the dot structure 301 disposed on the fifth surface 30A of the display area AA.

[0197] Exemplarily, 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 ≥0.1mm, the dot diameter of the second compensation dot 304 is 35±3um, 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±3um, the dot shape of the second compensation dot 304 is "n" shaped, and the density of the second compensation dot 304 is 1mm 2 1 to 1.5 are arranged to achieve the purpose of uniform brightness of the light source, and those skilled in the art will design it according to actual applications.

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

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

[0200] A first polarizer 2 disposed 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 arranged on the display panel 3. For example, the first polarizer 2 and the second polarizer 4 require edge crack control of ≤50um.

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

[0204] In an optional embodiment, the hue parameter of the first polarizer 2 is 2.55 to 2.65, and 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, and the hue of the polarizer with a hue parameter within the range of 2.55 to 2.65 is bluish. After testing, the brightness of the formed backlight module 1 can be increased by 3%.

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

[0206] In the color-compensation stage, the PVA film is color-compensated using a potassium iodide solution, and the concentration of the potassium iodide solution in the color-compensation stage is lower than that in the dyeing stage. In this stage, the iodide ions in the potassium iodide solution are added to the gaps between the I3 complexes in the PVA film layer. Since the concentration of the potassium iodide solution in the color-compensation stage is low, the amount of the generated I5 complex is reduced. In the heating and dehydration stages of the PVA film, the temperature increase can destroy the amount of the I5 complex, decompose part of the I5 complex into the I3 complex, and continue to reduce the proportion of the I5 complex. The hue of the polarizer finally formed is blue, which can increase the overall brightness of the module by 3%.

[0207] The brightness and lamp socket effects of the display module 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 the above Table 8, 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] For the combination of the dot structure of the light guide plate 30 + the first compensation dot of the sixth surface 30B, the solution can increase the brightness by 4% to 7%. Under the condition that the overall brightness of the backlight module 1 remains unchanged, the reflective sheet 20 can use RMF-80 to replace ESR-80V2 to reduce the cost. The single-chip cost of the backlight module 1 can be saved by 1.2 yuan, reducing the manufacturing cost.

[0212] For the combination of the dot structure of the light guide plate 30 + the first compensation dot of the sixth surface 30B + the double-sided white of the adhesive layer + the first opening and the second opening of the adhesive layer + the light blue coating layer + the blue color temperature of the POL, the solution can increase the brightness by 20%. When the customer's brightness requirement is 600-800nit, the number of scattering film materials 40 of the backlight module 1 can be reduced, and the single-chip cost of the backlight module 1 can be saved by 0.35 yuan, thereby reducing the manufacturing cost;

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

[0214] If customers pursue both the brightness of the display module and the lamp effect, they can choose large and small dots on the light guide plate + the first compensation dot on the sixth surface + double-sided white on the adhesive layer + the first and second openings on the adhesive layer + light blue coating layer + POL color temperature with a bluish color temperature. The brightness of the display module can reach 900nit, and the lamp 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, the display device includes the display module described in the above embodiment of the present invention, and the display device includes 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, laptops, digital photo frames, and navigators, and this embodiment does not limit this.

[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 any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0218] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the embodiments 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 list all the embodiments here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A light source assembly, characterized in that: The light source assembly comprises: 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. The driving board comprises: a first substrate layer having a first surface and a second surface; A conductive layer connected to the lamp group disposed on one side of the second surface; and A signal lead-out portion electrically connected to the conductive layer, the signal lead-out portion extending 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 has a first opening at the position of each of the wicks, and 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, and the second boundary includes a protruding portion away from the first boundary.

2. The light source assembly according to claim 1, characterized in that: 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, characterized in that: The two ends of the raised portion of the second boundary form a first break, and the length of the first break 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 which are perpendicular to the first boundary and are arranged opposite to each other, and 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, characterized in that: The adhesive layer has a second opening at a position of the second side corresponding to each of the wicks. The second opening includes a raised portion close to the first edge direction; A distance between an opening center line of the second opening parallel to the second direction and a wick 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, characterized in that: Two ends of the raised portion of the second boundary form a first break, and the length of the first break 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, characterized in that: 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, characterized in that: 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, and 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, characterized in that: The wick comprises a first wick surface attached to 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 first opening boundary and the light output focus is less than or equal to 45°; The angle formed by the second opening boundary and the light output focus is less than or equal to 45°.

9. The light source assembly according to claim 1, characterized in that: The bonding layer comprises: The PET layer comprises a third surface and a fourth surface which are arranged 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, characterized in that: The PET layer is a white substrate. and / or The adhesive layer further includes a first reflection enhancement layer arranged between the third surface and the first glue layer.

11. The light source assembly according to claim 9, characterized in that: 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, characterized in that: The bonding 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, characterized in that: 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, characterized in that: The driving board further includes a coating layer, the coating layer is 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 covers 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 comprises: A back plate having a groove, the back plate comprising a bottom wall and a side wall; A reflective sheet disposed on the bottom wall; A light guide plate disposed on the reflective sheet; A scattering film material disposed 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 plate, 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, characterized in that: The light guide plate includes a fifth surface close to the back plate and a sixth surface away from the back plate. A dot structure is arranged in an area corresponding to the display area on the fifth surface, and the dots of the dot structure are smaller as they are closer to the light source assembly.

17. The backlight module according to claim 16, characterized in that: 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 to the light guide plate. The diameter and depth of the first dots in the first dot area are smaller than the diameter and depth of the second dots in the second dot area, and the diameter and depth of the second dots in the second dot area are smaller than the diameter and depth of the third dots in the third dot area.

18. The backlight module according to claim 17, characterized in that: A scattering structure is provided in a region of the sixth surface corresponding to the display area, 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, characterized in that: A first compensation dot is disposed 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 less than a preset brightness.

20. The backlight module according to claim 15, characterized in that: The area of ​​the fifth surface corresponding to the non-display area is provided with second compensation dots. The second compensation dots are arranged at intervals between adjacent wicks, and the maximum length of the second compensation dots in the first direction is greater than the interval length between adjacent wicks in the first direction. The orthographic projection of the second compensation grid 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 direction away from the lamp core.

21. A display module, characterized in that: The display module comprises: 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, characterized in that: 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.

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