A light source component and a display device

Abstract

A light source assembly and a display device. The light source assembly includes a light guide layer, a light source, and a light shaping member. The light guide layer includes an adjacent light incident surface and a light exit surface. The light source is disposed at the light incident surface of the light guide layer, and the light shaping member is disposed between the light source and the light incident surface of the light guide layer. The light shaping member includes a first surface and a second surface disposed facing the light incident surface of the light guide layer. The light emitted by the light source can enter the light shaping member from the first surface of the light shaping member and exit from the second surface of the light shaping member, and the light exiting from the second surface of the light shaping member can enter the light guide layer from the light incident surface of the light guide layer and exit from the light exit surface of the light guide layer. The light shaping member is configured such that the exit angle of the light exiting from the second surface of the light shaping member in a first plane is less than the emission angle of the light source in the first plane. The first plane is a plane passing through the center point of the light exit surface of the light source and perpendicular to both the light exit surface and the light incident surface of the light guide layer. The light source assembly according to the embodiments of the present disclosure can improve the brightness uniformity.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to, but are not limited to, the field of display technology, and more particularly to a light source assembly and a display device. Background Art

[0002] Compared with transmissive display devices, reflective display devices have softer images and lower power consumption, and can obtain better display effects outdoors. Therefore, they are increasingly favored in fields such as e-readers and public displays. Some reflective display devices are provided with a front light source. As Figure 1 shown, some reflective display devices provided with a front light source include: a front light source assembly and a display panel 6. The front light source assembly includes a light guide layer 2 provided on the display side of the display panel 6 and a light source 1 provided at one side of the light guide layer 2. A microstructure layer 4 is provided on the surface of the light guide layer 2 facing away from the display panel 6. The microstructure layer 4 includes a plurality of microstructures 41. The light emitted by the light source 1 enters the light guide layer 2 and propagates in a direction away from the light source 1. The plurality of microstructures 41 of the microstructure layer 4 can break the total internal reflection of light in the light guide layer 2, so that the light in the light guide layer 2 can be emitted toward the side where the display panel 6 is located and enter the display panel 6, enabling the display panel 6 to display. However, Figure 1 the brightness uniformity of the overall picture of the reflective display device is relatively low. Summary of the Invention

[0003] Embodiments of the present disclosure provide a light source assembly, including a light guide layer, a light source, and a light shaper; the light guide layer includes an adjacent light incident surface and a light exit surface, the light source is provided at the light incident surface of the light guide layer, and the light shaper is provided between the light source and the light incident surface of the light guide layer; the light shaper includes a first surface and a second surface facing the light incident surface of the light guide layer. The light emitted by the light source can enter the light shaper from the first surface of the light shaper and exit from the second surface of the light shaper, and the light exiting from the second surface of the light shaper can enter the light guide layer from the light incident surface of the light guide layer and exit from the light exit surface of the light guide layer; the light shaper is configured such that the exit angle of the light exiting from the second surface of the light shaper in a first plane is smaller than the emission angle of the light source in the first plane, and the first plane is a plane passing through the center point of the light exit surface of the light source and perpendicular to both the light exit surface and the light incident surface of the light guide layer.

[0004] Optionally, the first surface and the second surface of the light shaper are oppositely arranged, and the first surface of the light shaper faces the light exit surface of the light source.

[0005] Optionally, the first surface of the light shaper is a convex arc surface facing the light exit surface of the light source.

[0006] Optionally, a plurality of convex ridges extending along the length direction of the light incident surface of the light guiding layer are provided on the second surface of the light shaping member.

[0007] Optionally, the cross-sectional shape of the convex ridge is triangular, and a first groove is formed between two adjacent convex ridges, and the cross-sectional shape of the first groove is triangular.

[0008] Optionally, the cross-sectional shape of the convex ridge is an isosceles right triangle, and the convex ridge includes a first inclined surface and a second inclined surface that intersect perpendicularly.

[0009] Optionally, the light shaping member further includes a third surface and a fourth surface that are oppositely arranged, and reflection layers are provided on both the third surface and the fourth surface, and the reflection layers are configured such that when light in the light shaping member is incident on the reflection layers, specular reflection can occur.

[0010] Optionally, the refractive index of the light shaping member is 1.4 to 1.6.

[0011] Optionally, a plurality of second grooves extending in a direction away from the light source are provided on the light exit surface of the light guiding layer, or a first micro-structure layer including a plurality of second grooves extending in a direction away from the light source is provided on the light exit surface of the light guiding layer; the ratio of the depth to the width of the second groove is 1:1 to 2:1.

[0012] Optionally, a second micro-structure layer including a plurality of micro-structures is provided on the surface of the light guiding layer opposite to the light exit surface, and the micro-structures are configured such that when light in the light guiding layer is incident on the micro-structures and reflected, the light can exit from the light exit surface of the light guiding layer at a set exit angle.

[0013] The embodiment of the present disclosure further provides a display device, including the light source assembly and the display panel according to any one of the embodiments.

[0014] Optionally, the display panel is a reflective liquid crystal display panel, and the light source assembly is disposed on the display side of the display panel.

[0015] In the light source assembly according to an embodiment of the present disclosure, a light shaping member is disposed between the light source and the light incident surface of the light guide layer. The light emitted by the light source can enter the light shaping member from the first surface of the light shaping member and exit from the second surface of the light shaping member, and the light exiting from the second surface of the light shaping member can enter the light guide layer from the light incident surface of the light guide layer and exit from the light exit surface of the light guide layer; the light shaping member is configured such that the exit angle of the light exiting from the second surface of the light shaping member in the first plane is smaller than the emission angle of the light source in the first plane, and the first plane is a plane passing through the center point of the light exit surface of the light source and perpendicular to both the light exit surface and the light incident surface of the light guide layer. Thus, the light shaping member can converge the beam angle of the light source in the first plane and then enter the light guide layer, so that the light can propagate farther in the direction away from the light source in the light guide layer, thereby improving the brightness uniformity of the picture of the display device applying the light source assembly according to the embodiment of the present disclosure, and facilitating the application of the light source assembly according to the embodiment of the present disclosure in a large-size display device and improving the light utilization rate. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the technical solutions of the present disclosure, and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solutions of the present disclosure, and do not constitute a limitation to the technical solutions of the present disclosure. The shapes and sizes of the components in the drawings do not reflect the actual scale, and the purpose is only to schematically illustrate the content of the present disclosure.

[0017] Figure 1 It is a schematic cross-sectional structure diagram of some reflective display devices provided with a front light source;

[0018] Figure 2 It is a schematic cross-sectional structure diagram of the display device of some exemplary embodiments;

[0019] Figure 3 In some exemplary embodiments Figure 2 It is a schematic partial cross-sectional structure diagram of the display device;

[0020] Figure 4 In some exemplary embodiments Figure 2 It is a schematic top view structure diagram of the display device;

[0021] Figure 5 In some exemplary embodiments Figure 2 It is a schematic structure diagram of the light source and the light shaping member of the light source assembly in the display device;

[0022] Figure 6 In some exemplary embodiments Figure 5 It is a schematic partial cross-sectional structure diagram of the light shaping member therein;

[0023] Figure 7 In some exemplary embodiments Figure 5Schematic diagram of the optical path for shaping the light emitted by the light source by the light shaping component in

[0024] Figure 8 is Figure 2 Schematic diagram of the brightness distribution of the light emitted by the light source in the display device of

[0025] Figure 9 is Figure 2 Schematic diagram of the brightness distribution of the light emitted by the light source in the display device of after being shaped by the light shaping component;

[0026] Figure 10 is Figure 1 Schematic diagram of the optical path for the light emitted by the light source in the display device of to propagate in the light guide layer;

[0027] Figure 11 is Figure 2 Schematic diagram of the optical path for the light emitted by the light source in the display device of to propagate in the light guide layer after being shaped by the light shaping component.

[0028] Reference numerals are:

[0029] 1. Light source, 2. Light guide layer, 3. Light shaping component, 4. Second microstructure layer, 5. Protective film, 6. Display panel, 7. Adhesive layer, 21. Light incident surface of the light guide layer, 22. Light exit surface of the light guide layer, 31. First surface of the light shaping component, 32. Second surface of the light shaping component, 33. Third surface of the light shaping component, 34. Fourth surface of the light shaping component, 41. Microstructure, 221. Second groove, 321. Ridge. Detailed implementation manners

[0030] Those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and all should be covered within the scope of the claims of the present disclosure.

[0031] As Figure 1 shown, the brightness uniformity of the overall picture of the reflective display device provided with a front light source is relatively low. In order to improve the brightness uniformity of the picture of the display device, some methods are to change the pitch and size of the microstructures 41 in the microstructure layer 4. However, limited by the processing method of the microstructure layer 4, the shape and pitch variation of the microstructures 41 will seriously affect the processing efficiency, and the processing cost will increase exponentially. Moreover, when the pitch of the microstructures 41 is too dense or too sparse, it will also affect the display effect of the picture, making the local display of the picture unclear.

[0032] The embodiments of the present disclosure provide a light source assembly. In some exemplary embodiments, as Figure 2 , Figure 4 and Figure 5 shown, Figure 2Schematic cross-sectional structure diagram of a display device adopting the light source assembly of the embodiments of the present disclosure in some exemplary embodiments. Figure 4 In some exemplary embodiments Figure 2 Schematic top view structure diagram of the display device. Figure 5 In some exemplary embodiments Figure 2 Schematic structure diagram of the light source 1 and the light shaping member 3 of the light source assembly in the display device. The light source assembly includes a light guide layer 2, a light source 1, and a light shaping member 3; the light guide layer 2 includes an adjacent light incident surface 21 and a light exit surface 22, the light source 1 is disposed at the light incident surface 21 of the light guide layer 2, and the light shaping member 3 is disposed between the light source 1 and the light incident surface 21 of the light guide layer 2; the light shaping member 3 includes a first surface 31 and a second surface 32 facing the light incident surface 21 of the light guide layer 2. The light emitted by the light source 1 can enter the light shaping member 3 from the first surface 31 of the light shaping member 3 and exit from the second surface 32 of the light shaping member 3, and the light exiting from the second surface 32 of the light shaping member 3 can enter the light guide layer 2 from the light incident surface 21 of the light guide layer 2 and exit from the light exit surface 22 of the light guide layer 2; the light shaping member 3 is configured such that the exit angle of the light exiting from the second surface 32 of the light shaping member 3 in the first plane is smaller than the emission angle of the light source 1 in the first plane. The first plane ( Figure 2 the plane where the straight line X and the straight line Y shown in) is a plane passing through the center point of the light exit surface of the light source 1 and perpendicular to both the light exit surface 22 and the light incident surface 21 of the light guide layer 2.

[0033] In the light source assembly of the embodiments of the present disclosure, a light shaping member 3 is disposed between the light source 1 and the light incident surface 21 of the light guide layer 2. The light emitted by the light source 1 can enter the light shaping member 3 from the first surface 31 of the light shaping member 3 and exit from the second surface 32 of the light shaping member 3, and the light exiting from the second surface 32 of the light shaping member 3 can enter the light guide layer 2 from the light incident surface 21 of the light guide layer 2 and exit from the light exit surface 22 of the light guide layer 2; the light shaping member 3 is configured such that the exit angle of the light exiting from the second surface 32 of the light shaping member 3 in the first plane is smaller than the emission angle of the light source 1 in the first plane. The first plane is a plane passing through the center point of the light exit surface of the light source 1 and perpendicular to both the light exit surface 22 and the light incident surface 21 of the light guide layer 2. Thus, the light shaping member 3 can converge the beam angle of the light source 1 in the first plane and then enter the light guide layer 2, so that the light can propagate farther in the light guide layer 2 in the direction away from the light source 1, thereby improving the brightness uniformity of the picture of the display device applying the light source assembly of the embodiments of the present disclosure, and facilitating the application of the light source assembly of the embodiments of the present disclosure in large-size display devices and improving the light utilization rate.

[0034] In some exemplary embodiments, such as Figure 2and Figure 5 As shown, the first surface 31 and the second surface 32 of the optical shaping member 3 can be oppositely arranged, and the first surface 31 of the optical shaping member 3 faces the light-emitting surface of the light source 1. The first surface 31 of the optical shaping member 3 can be an arc surface protruding towards the light-emitting surface of the light source 1. The second surface 32 of the optical shaping member 3 can be provided with a plurality of convex ridges 321 extending along the length direction of the light-incident surface 21 of the light guide layer 2.

[0035] In some exemplary embodiments, as Figure 6 shown, Figure 6 For some exemplary embodiments Figure 5 is a partial cross-sectional structural schematic diagram of the optical shaping member 3 in, the cross-sectional shape of the convex ridge 321 can be triangular, and a first groove is formed between two adjacent convex ridges 321, and the cross-sectional shape of the first groove can be triangular.

[0036] In an exemplary example of this embodiment, as Figure 6 shown, the cross-sectional shape of the convex ridge 321 can be an isosceles right triangle, the convex ridge 321 includes a first inclined surface and a second inclined surface that are perpendicularly intersecting, and the cross-sectional shape of the first groove is also an isosceles right triangle. The included angle α between the first inclined surface and the second inclined surface of the convex ridge 321 is a right angle, the height of the convex ridge 321 is a, the width of the convex ridge 321 is 2b, where a = b. The depth of the first groove is equal to the height of the convex ridge 321, and the width of the first groove is equal to the width of the convex ridge 321. In other examples, the included angle α between the first inclined surface and the second inclined surface of the convex ridge 321, the height a of the convex ridge 321, and the width 2b of the convex ridge 321 can all be designed as needed.

[0037] In some exemplary embodiments, as Figure 5 shown, the optical shaping member 3 can further include a third surface 33 and a fourth surface 34 that are oppositely arranged, and reflection layers are provided on both the third surface 33 and the fourth surface 34, and the reflection layers are arranged such that when the light in the optical shaping member 3 is incident on the reflection layers, specular reflection can occur. In this way, the light in the optical shaping member 3 can finally exit from the second surface 32 of the optical shaping member 3 after specular reflection by the reflection layers.

[0038] In an exemplary example of this embodiment, as Figure 5 shown, the third surface 33 and the fourth surface 34 of the optical shaping member 3 can be arranged parallel to each other, the third surface 33 of the optical shaping member 3 is adjacent to the first surface 31 and adjacent to the second surface 32, and the fourth surface 34 of the optical shaping member 3 is adjacent to the first surface 31 and adjacent to the second surface 32. The material of the reflection layer can be a metal, such as silver, etc. The reflection layer can be formed by processes such as vapor deposition.

[0039] In some exemplary embodiments, the light shaping element 3 may be made of transparent materials such as glass, PC (polycarbonate), PMMA (polymethyl methacrylate), etc. The refractive index of the light shaping element 3 may be 1.4 to 1.6. For example, a PC material with a refractive index of 1.58 may be used.

[0040] In some exemplary embodiments, Figure 2 , Figure 4 As shown, the light source 1 may include one or more LED lamps. Multiple LED lamps may be arranged along the length direction of the light incident surface 21 of the light guide layer 2, and the light emitting surfaces of the multiple LED lamps are arranged toward the first surface 31 of the light shaping member 3. The light source 1 may emit light in all directions, and the maximum light emitting angle of the light source 1 in all directions around may be 100 degrees to 120 degrees. The length of the light shaping member 3 in the length direction of the light incident surface 21 of the light guide layer 2 may be equal to or greater than the length of the light incident surface 21 of the light guide layer 2.

[0041] In some exemplary embodiments, Figure 3 , Figure 4 As shown, Figure 3 In some exemplary embodiments Figure 2 The schematic diagram of the partial cross-sectional structure of the display device is shown in FIG. 2 , wherein the light emitting surface 22 of the light guide layer 2 may be provided with a plurality of second grooves 221 extending in a direction away from the light source 1, or the light emitting surface 22 of the light guide layer 2 may be provided with a first microstructure layer, and the first microstructure layer includes a plurality of second grooves 221 extending in a direction away from the light source 1. The cross-sectional shape of the second groove 221 may not be limited, for example, it may be a trapezoid, a triangle, etc. In this way, by providing a plurality of second grooves 221 on the light emitting surface 22 of the light guide layer 2, the problem of bright lines appearing on the screen due to diffraction can be avoided or reduced, and the propagation distance of light in the light guide layer 2 in a direction away from the light source 1 can also be increased.

[0042] In an example of this embodiment, Figure 4 As shown, the plurality of second grooves 221 may be arranged at intervals in the length direction of the light incident surface 21 of the light guide layer 2, and the plurality of second grooves 221 may be arranged in parallel, and the spacing between two adjacent second grooves 221 may be less than or equal to the spacing between adjacent sub-pixels on the display panel in the display device. The ratio of the depth to the width of the second groove 221 may be 1:1 to 2:1.

[0043] In an example of this embodiment, the light guide layer 2 may be a light guide plate, and the second groove 221 may be directly provided on the light-emitting surface of the light guide plate. For example, the light guide plate may be made by injection molding. A structure complementary to the shape of the second groove 221 may be provided on the mold for making the light guide plate. In this way, the second groove 221 is formed on the made light guide plate. Alternatively, the light guide layer 2 may be a light guide film. A glue layer may be first formed on the light-emitting surface of the light guide film, and then, a plurality of the second grooves 221 are roll-pressed on the glue layer. After that, the first microstructure layer is formed after the glue layer is cured.

[0044] In some exemplary embodiments, as Figure 2 shown, a second microstructure layer 4 may be provided on the surface of the light guide layer 2 opposite to the light-emitting surface. The second microstructure layer 4 includes a plurality of microstructures 41. The microstructures 41 are arranged such that the light incident on the microstructures 41 in the light guide layer 2 can be reflected and then emitted from the light-emitting surface 22 of the light guide layer 2 at a set emission angle. Exemplarily, the set emission angle may be -30 degrees to 30 degrees. When the angle at which the light is emitted from the light-emitting surface 22 of the light guide layer 2 is 0 degrees, that is, the light is emitted perpendicular to the light-emitting surface 22 of the light guide layer 2. Exemplarily, as Figure 4 shown, the microstructure 41 may be a groove, and the cross-sectional shape of the groove may be triangular, W-shaped, etc. The extending direction of the groove may be perpendicular to the extending direction of the second groove 221.

[0045] In some exemplary embodiments, as Figure 2 shown, a protective film 5 may be attached to the side of the light guide layer 2 away from the light-emitting surface to protect the light guide layer 2. Exemplarily, as Figure 2 shown, the protective film 5 may be attached to the surface of the second microstructure layer 4.

[0046] In some exemplary embodiments, as Figure 5 shown, the light emitted by the light source 1 enters the light shaper 3 from the first surface 31 of the light shaper 3. The light emitted by the light source 1 is refracted when passing through the first surface 31 of the light shaper 3. The light after being refracted by the first surface 31 of the light shaper 3 will irradiate the reflective layers on the third surface 33 and the fourth surface 34 of the light shaper 3. After being specularly reflected by the reflective layers, the light finally irradiates the second surface 32 of the light shaper 3 and is emitted from the second surface 32 of the light shaper 3. The emission angle of the light finally emitted from the second surface 32 of the light shaper 3 in the first plane is smaller than the emission angle of the light source 1 in the first plane.

[0047] In an example of this embodiment, as Figure 2 as shown in 4 and Figure 5As shown, the light source 1 includes a plurality of LED lamps, and the maximum luminous angle of the LED lamps in all directions around is 100 degrees, which can be understood as the luminous angle of the LED lamp is -100 degrees to 100 degrees. The light shaping member 3 is made of PC material with a refractive index of 1.58. The first surface 31 of the light shaping member 3 is an arc surface protruding toward the light emitting surface of the light source 1. The radius of the arc surface can be designed according to factors such as the refractive index of the light shaping member 3 and the packaging size of the LED lamp. In this example, the radius of the first surface (arc surface) 31 of the light shaping member 3 is 0.25 mm. The angle α between the first inclined surface and the second inclined surface of the ridge 321 on the second surface 32 of the light shaping member 3 is a right angle, the height of the ridge 321 is a, and the width of the ridge 321 is 2b, where a=b=25 microns. As shown Figure 7 As shown, the angle of the light emitted from the center of the light emitting surface of the LED lamp in the first plane is ( Figure 7 , which can be understood as the angle between the light and the straight line X or the horizontal plane) is 20 degrees, 30 degrees, 40 degrees, and 50 degrees respectively. For example, after passing through the light shaping element 3, the exit angles in the first plane are 18 degrees, 6 degrees, 0.7 degrees, and 0.3 degrees respectively. It can be seen that the light shaping element 3 can converge the beam angle of the light source 1 in the first plane. The following Table 1 shows the angles of the light when passing through different surfaces of the light shaping element 3 (retain two significant figures).

[0048] Table 1 Angles of light passing through different surfaces of the light shaping element

[0049]

[0050] like Figure 8 As shown, Figure 8 Schematic diagram of the brightness distribution of the light emitted by the light source 1 in some exemplary embodiments. It can be seen that the light emitting angle of the light source 1 is -45 degrees to 45 degrees. The brightness is the strongest when the light emitting angle is 0 degrees, and the brightness gradually decreases around 0 degrees. Figure 9 As shown, Figure 9 For some exemplary embodiments Figure 8 The schematic diagram of the brightness distribution of the light emitted by the light source 1 after being shaped by the light shaping element 3 shows that Figure 8 The light emitted by the light source 1 is shaped by the light shaping element 3 to have an output angle of -30 degrees to 30 degrees. The brightness is the highest when the output angle is 0 degrees, and the brightness gradually decreases around 0 degrees. Figure 8 and Figure 9 By comparison, it can be seen that the light shaping element 3 can converge the beam angle of the light source 1 in the first plane.

[0051] like Figure 10 As shown, Figure 10 for Figure 1Schematic diagram of the optical path of the light emitted by the light source 1 propagating in the light guide layer 2 in the display device. It can be seen that the light emitted by the light source 1 directly enters the light guide layer 2 from the light incident surface 21 of the light guide layer 2 and propagates in the direction away from the light source 1. As Figure 11 shown, Figure 11 is Figure 2 Schematic diagram of the optical path of the light emitted by the light source 1 propagating in the light guide layer 2 after being shaped by the light shaping member 3 in the display device. It can be seen that the light emitted by the light source 1 enters the light guide layer 2 from the light incident surface 21 of the light guide layer 2 after being shaped by the light shaping member 3 and propagates in the direction away from the light source 1. By Figure 10 and Figure 11 comparison, it can be seen that after the light emitted by the light source 1 is shaped by the light shaping member 3, the angle between the light rays and the horizontal plane is smaller and the angular distribution of the light rays is more concentrated, and the light rays propagate a longer distance in the light guide layer 2 in the direction away from the light source 1.

[0052] The embodiments of the present disclosure also provide a display device, including the light source assembly and the display panel of any of the above embodiments.

[0053] In some exemplary embodiments, as Figure 2 shown, the display device includes the light source assembly and the display panel 6 of any of the above embodiments. The display panel 6 may be a reflective display panel, and the light source assembly may serve as the light source of the reflective display panel 6. For example, the display panel 6 may be a reflective liquid crystal display panel, and the light source assembly may be disposed on the display side of the display panel 6 and serve as the front light source of the reflective liquid crystal display panel. The light exit surface 22 of the light guide layer 2 may be adhered to the display surface of the display panel 6 through an adhesive layer 7, and the adhesive layer 7 may be an optically transparent adhesive. The light rays emitted from the light exit surface 22 of the light guide layer 2 enter the reflective display panel 6, enabling the reflective display panel 6 to display normally when the ambient light is relatively dim.

[0054] The display device of the embodiments of the present disclosure may be: a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0055] In the drawings, sometimes for clarity, the sizes of the constituent elements, the thicknesses of the layers, or the areas are exaggerated. Therefore, the embodiments of the present disclosure are not necessarily limited to this size, and the shapes and sizes of each component in the drawings do not reflect the true proportions. In addition, the drawings schematically show some examples, and the embodiments of the present disclosure are not limited to the shapes or values shown in the drawings.

[0056] In the description herein, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus includes the state where the angle is greater than -5° and less than 5°. Additionally, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus includes the state where the angle is greater than 85° and less than 95°.

[0057] In the description herein, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", "inner", "outer", "axial", "four corners", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of simplifying the description of the embodiments of the present disclosure, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0058] In the description herein, unless otherwise clearly specified and defined, the terms "connected", "fixedly connected", "installed", "assembled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; the terms "installed", "connected", "fixedly connected" may be directly connected, indirectly connected through an intermediate medium, or the internal communication of two components. For those of ordinary skill in the art, the meanings of the above terms in the embodiments of the present disclosure can be understood according to the circumstances.

Claims

1. A light source assembly, characterized in that: it includes a light guide layer, a light source, and a light shaping member; the light guide layer includes an adjacent light incident surface and a light exit surface, the light source is arranged at the light incident surface of the light guide layer, and the light shaping member is arranged between the light source and the light incident surface of the light guide layer; the light shaping member includes a first surface and a second surface arranged towards the light incident surface of the light guide layer, the light emitted by the light source can enter the light shaping member from the first surface of the light shaping member and exit from the second surface of the light shaping member, and the light exiting from the second surface of the light shaping member can enter the light guide layer from the light incident surface of the light guide layer and exit from the light exit surface of the light guide layer; the light shaping member is arranged such that the exit angle of the light exiting from the second surface of the light shaping member in the first plane is smaller than the emission angle of the light source in the first plane, so that the light travels a longer distance in the light guide layer in a direction away from the light source; the first plane is a plane passing through the center point of the light exit surface of the light source and perpendicular to both the light exit surface and the light incident surface of the light guide layer; the second surface of the light shaping member is provided with a plurality of convex ridges extending along the length direction of the light incident surface of the light guide layer; the cross-sectional shape of the convex ridge is an isosceles right triangle, the convex ridge includes a first inclined surface and a second inclined surface that are perpendicularly intersecting, and the width of the convex ridge is twice the height of the convex ridge; a first groove is formed between two adjacent convex ridges, the cross-sectional shape of the first groove is an isosceles right triangle, the depth of the first groove is equal to the height of the convex ridge, and the width of the first groove is equal to the width of the convex ridge.

2. The light source assembly according to claim 1, characterized in that: the first surface of the light shaping member is arranged opposite to the second surface, and the first surface of the light shaping member is arranged towards the light exit surface of the light source.

3. The light source assembly according to claim 2, characterized in that: the first surface of the light shaping member is a convex arc surface towards the light exit surface of the light source.

4. The light source assembly according to claim 1, characterized in that: the light shaping member further includes a third surface and a fourth surface arranged opposite to each other, and a reflective layer is provided on both the third surface and the fourth surface, and the reflective layer is arranged such that when the light in the light shaping member is incident on the reflective layer, specular reflection can occur.

5. The light source assembly according to claim 1, characterized in that: the refractive index of the light shaping member is 1.4 to 1.

6.

6. The light source assembly according to any one of claims 1 to 5, characterized in that: the light exit surface of the light guide layer is provided with a plurality of second grooves extending in a direction away from the light source, or, the light exit surface of the light guide layer is provided with a first micro-structured layer, and the first micro-structured layer includes a plurality of second grooves extending in a direction away from the light source; the ratio of the depth to the width of the second groove is 1:1 to 2:

1.

7. The light source assembly according to any one of claims 1 to 5, characterized in that: A second microstructure layer is provided on a surface of the light guide layer opposite to the light exit surface. The second microstructure layer includes a plurality of microstructures, and the microstructures are configured such that light in the light guide layer incident on the microstructures is reflected and then can be emitted from the light exit surface of the light guide layer at a set emission angle.

8. A display device, characterized in that: it includes the light source assembly according to any one of claims 1 to 7 and a display panel.

9. The display device according to claim 8, characterized in that: the display panel is a reflective liquid crystal display panel, and the light source assembly is provided on the display side of the display panel.

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