CN215641923U - Light source assembly and display device - Google Patents

Abstract

A light source component and a display device are provided, the light source component comprises a light guide layer, a light source and a light shaping piece; the light guide layer comprises an incident surface and an emergent surface which are adjacent, the light source is arranged at the incident surface of the light guide layer, and the light shaping piece is arranged between the light source and the incident surface of the light guide layer; the light shaping piece comprises a first surface and a second surface arranged towards the light inlet surface of the light guide layer, light emitted by the light source can be emitted into the light shaping piece from the first surface of the light shaping piece and emitted from the second surface of the light shaping piece, and light emitted from the second surface of the light shaping piece can be emitted into the light guide layer from the light inlet surface of the light guide layer and emitted from the light outlet surface of the light guide layer; the light shaping piece is set to be smaller than the light emitting angle of the light source in the first plane, wherein the light emitting angle of the light emitted from the second surface of the light shaping piece in the first plane is smaller than the light emitting angle of the light source in the first plane, and the first plane is a plane which passes through the central point of the light emitting surface of the light source and is perpendicular to the light emitting surface and the light incident surface of the light guide layer. The light source component provided by the embodiment of the utility model can improve the brightness uniformity.

Description

Light source assembly and display device

Technical Field

The embodiment of the utility model relates to the technical field of display, in particular to a light source assembly and a display device.

Background

Compared with a transmissive display device, a reflective display device has softer images, lower power consumption, and better display effect outdoors, and is therefore increasingly favored in the fields of electronic readers, public displays, and the like. Some reflective display devices are provided with a front light source, and as shown in fig. 1, some reflective display devices provided with a front light source include: leading light source subassembly and display panel 6, leading light source subassembly is including locating the leaded light layer 2 of the display side of display panel 6 and locating the light source 1 of 2 side departments of leaded light layer, the surface that deviates from display panel 6 of leaded light layer 2 is equipped with micro-structure layer 4, micro-structure layer 4 includes a plurality of micro-structure 41, the light that light source 1 sent incides in leaded light layer 2 and to the direction propagation of keeping away from light source 1, the total reflection of light in leaded light layer 2 can be destroyed to a plurality of micro-structure 41 of micro-structure layer 4, make in the leaded light layer 2 light can be towards the display panel 6 side-emitting and incidenting display panel 6, make display panel 6 show. However, the reflective display device of fig. 1 has a low luminance uniformity in the entire screen.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a light source component, which comprises a light guide layer, a light source and a light shaping piece; the light guide layer comprises an incident surface and an emergent surface which are adjacent, the light source is arranged at the incident surface of the light guide layer, and the light shaping piece is arranged between the light source and the incident surface of the light guide layer; the light shaping piece comprises a first surface and a second surface arranged towards the light inlet surface of the light guide layer, light emitted by the light source can be emitted into the light shaping piece from the first surface of the light shaping piece and emitted from the second surface of the light shaping piece, and light emitted from the second surface of the light shaping piece can be emitted into the light guide layer from the light inlet surface of the light guide layer and emitted from the light outlet surface of the light guide layer; the light shaping piece is arranged in a manner that the emergent angle of light emitted from the second surface of the light shaping piece in a first plane is smaller than the light emitting angle of the light source in the first plane, and the first plane is a plane which passes through the central point of the light emitting surface of the light source and is perpendicular to the light emitting surface and the light incident surface of the light guide layer.

Optionally, the first surface of the light shaping member is disposed opposite to the second surface, and the first surface of the light shaping member is disposed toward the light exit surface of the light source.

Optionally, the first surface of the light shaping member is an arc surface protruding towards the light exit surface of the light source.

Optionally, the second surface of the light shaping member is provided with a plurality of ribs extending along the length direction of the light incident surface of the light guide layer.

Optionally, the cross-sectional shape of the protruding ribs is a triangle, a first groove is formed between two adjacent protruding ribs, and the cross-sectional shape of the first groove is a triangle.

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

Optionally, the light shaping element further includes a third surface and a fourth surface that are disposed opposite to each other, and a reflective layer is disposed on each of the third surface and the fourth surface, and the reflective layer is configured to enable specular reflection of light in the light shaping element when the light is incident on the reflective layer.

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

Optionally, the light-emitting surface of the light-guiding layer is provided with a plurality of second grooves extending in a direction away from the light source, or the light-emitting surface of the light-guiding layer is provided with a first microstructure layer, and the first microstructure layer comprises 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 trench is 1:1 to 2: 1.

Optionally, a second microstructure layer is arranged on the 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 arranged such that light in the light guide layer can be emitted from the light exit surface of the light guide layer at a set exit angle after being incident on the microstructures for reflection.

The embodiment of the utility model also provides a display device, which comprises the light source assembly and the display panel.

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

In the light source assembly provided by the embodiment of the utility model, the light shaping piece is arranged between the light source and the light inlet surface of the light guide layer, light emitted by the light source can be emitted into the light shaping piece from the first surface of the light shaping piece and emitted from the second surface of the light shaping piece, and light emitted from the second surface of the light shaping piece can be emitted into the light guide layer from the light inlet surface of the light guide layer and emitted from the light outlet surface of the light guide layer; the light shaping piece is arranged in a way that the emergent angle of light emitted from the second surface of the light shaping piece in a first plane is smaller than the light emitting angle of the light source in the first plane, and the first plane is a plane which passes through the central point of the light emitting surface of the light source and is perpendicular to the light emitting surface and the light incident surface of the light guide layer. Therefore, the light beam angle of the light source in the first plane can be collected by the light shaping piece and then the collected light beam angle is emitted into the light guide layer, so that the distance of light propagating in the light guide layer along the direction far away from the light source is longer, the brightness uniformity of the picture of the display device with the light source assembly provided by the embodiment of the utility model can be improved, the light source assembly provided by the embodiment of the utility model can be favorably applied to a large-size display device, and the light utilization rate can be improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model. The shapes and sizes of the elements in the drawings are not to scale and are merely illustrative of the principles of the utility model.

FIG. 1 is a schematic cross-sectional view of some reflective display devices with front light sources;

fig. 2 is a schematic cross-sectional view of a display device according to some exemplary embodiments;

FIG. 3 is a schematic partial cross-sectional structure of the display device of FIG. 2 in some exemplary embodiments;

FIG. 4 is a schematic diagram of a top view structure of the display device of FIG. 2 in some exemplary embodiments;

FIG. 5 is a schematic view of a light source and a light shaping member of the light source assembly in the display device of FIG. 2 in some exemplary embodiments;

FIG. 6 is a schematic diagram of a partial cross-sectional structure of the light shaping member of FIG. 5 in some exemplary embodiments;

FIG. 7 is a schematic optical path diagram of the light shaping element of FIG. 5 shaping light from a light source in some exemplary embodiments;

FIG. 8 is a diagram illustrating a luminance distribution of light emitted from a light source in the display device of FIG. 2;

FIG. 9 is a schematic diagram of the brightness distribution of the display device of FIG. 2 after the light emitted from the light source is shaped by the light shaping element;

FIG. 10 is a schematic diagram of the light path of light emitted by the light source propagating within the light guide layer in the display device of FIG. 1;

fig. 11 is a schematic diagram of an optical path of light emitted from the light source in the display device of fig. 2, which propagates in the light guide layer after being shaped by the light shaping element.

The reference signs are:

1. light source, 2, light guide layer, 3, light shaping piece, 4, second microstructure layer, 5, protective film, 6, display panel, 7, bonding layer, 21, light incident surface of light guide layer, 22, light emergent surface of light guide layer, 31, first surface of light shaping piece, 32, second surface of light shaping piece, 33, third surface of light shaping piece, 34, fourth surface of light shaping piece, 41, microstructure, 221, second groove, 321, and ridge.

Detailed Description

It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made in the embodiment of the present invention without departing from the spirit and scope of the embodiment of the present invention and it is intended to cover the appended claims.

As shown in fig. 1, the brightness uniformity of the whole screen of the reflective display device with a front light source is low, in order to improve the brightness uniformity of the screen of the display device, some methods change the pitch (pitch) and size of the microstructure 41 in the microstructure layer 4, but are limited by the processing manner of the microstructure layer 4, the change of the shape and pitch of the microstructure 41 will seriously affect the processing efficiency, the processing cost is increased by times, and when the pitch of the microstructure 41 is too dense or too sparse, the display effect of the screen will be affected, so that the screen is displayed partially unclear.

Embodiments of the present invention provide a light source assembly, and in some exemplary embodiments, as shown in fig. 2, 4 and 5, fig. 2 is a schematic cross-sectional structure of a display device in which the light source assembly of the present invention is used in some exemplary embodiments, fig. 4 is a schematic top-view structure of the display device of fig. 2 in some exemplary embodiments, and fig. 5 is a schematic structure of a light source 1 and a light shaping member 3 of the light source assembly in the display device of fig. 2 in some exemplary embodiments. The light source component comprises a light guide layer 2, a light source 1 and a light shaping piece 3; the light guide layer 2 comprises an incident surface 21 and an emergent surface 22 which are adjacent, the light source 1 is arranged at the incident surface 21 of the light guide layer 2, and the light shaping piece 3 is arranged between the light source 1 and the incident surface 21 of the light guide layer 2; the light-shaping member 3 comprises a first surface 31 and a second surface 32 arranged towards the light-incident surface 21 of the light-guiding layer 2, the light emitted by the light source 1 can be incident into the light-shaping member 3 from the first surface 31 of the light-shaping member 3 and can be emitted from the second surface 32 of the light-shaping member 3, and the light emitted from the second surface 32 of the light-shaping member 3 can be incident into the light-guiding layer 2 from the light-incident surface 21 of the light-guiding layer 2 and can be emitted from the light-emitting surface 22 of the light-guiding layer 2; the light-shaping member 3 is configured such that an exit angle of light emitted from the second surface 32 of the light-shaping member 3 in a first plane is smaller than a light-emitting angle of the light source 1 in the first plane, and the first plane (a plane where a straight line X and a straight line Y shown in fig. 2 are located) is a plane passing through a central point of the light-emitting surface of the light source 1 and perpendicular to both the light-emitting surface 22 and the light-entering surface 21 of the light-guiding layer 2.

In the light source assembly of the embodiment of the present invention, the light shaping element 3 is disposed between the light source 1 and the light incident surface 21 of the light guide layer 2, light emitted from the light source 1 can enter the light shaping element 3 from the first surface 31 of the light shaping element 3 and exit from the second surface 32 of the light shaping element 3, and light exiting from the second surface 32 of the light shaping element 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 emitted from the second surface 32 of the light-shaping member 3 in a first plane, which is a plane passing through the center point of the light-emitting surface of the light source 1 and perpendicular to both the light-emitting surface 22 and the light-entering surface 21 of the light-guiding layer 2, is smaller than the light-emitting angle of the light source 1 in the first plane. In this way, the light shaping element 3 can fold the beam angle of the light source 1 in the first plane and then inject the light into the light guide layer 2, so that the distance of light propagating in the light guide layer 2 along the direction far away from the light source 1 is longer, the brightness uniformity of the picture of the display device to which the light source assembly of the embodiment of the utility model is applied can be improved, the light source assembly of the embodiment of the utility model can be favorably applied to a large-size display device, and the light utilization rate can be improved.

In some exemplary embodiments, as shown in fig. 2 and 5, the first surface 31 and the second surface 32 of the light-shaping member 3 may be disposed opposite to each other, and the first surface 31 of the light-shaping member 3 is disposed toward the light-emitting surface of the light source 1. The first surface 31 of the light shaping member 3 may be a curved surface protruding towards the light exit surface of the light source 1. The second surface 32 of the light shaping member 3 may be provided with a plurality of ribs 321 extending along the length direction of the light incident surface 21 of the light guide layer 2.

In some exemplary embodiments, as shown in fig. 6, fig. 6 is a schematic partial cross-sectional structure of the light shaping member 3 in fig. 5 in some exemplary embodiments, a cross-sectional shape of the protruding ribs 321 may be a triangle, and a first groove is formed between two adjacent protruding ribs 321, and the cross-sectional shape of the first groove may be a triangle.

In an exemplary embodiment, as shown in fig. 6, the cross-sectional shape of the rib 321 may be an isosceles right triangle, the rib 321 includes a first inclined surface and a second inclined surface that intersect perpendicularly, and the cross-sectional shape of the first groove is also an isosceles right triangle. An included angle α between the first inclined surface and the second inclined surface of the rib 321 is a right angle, a height of the rib 321 is a, and a width of the rib 321 is 2b, where a is b. The depth of the first groove is equal to the height of the rib 321, and the width of the first groove is equal to the width of the rib 321. In other examples, the included angle α between the first inclined surface and the second inclined surface of the rib 321, the height a of the rib 321, and the width 2b of the rib 321 may be designed as required.

In some exemplary embodiments, as shown in fig. 5, the light-shaping member 3 may further include a third surface 33 and a fourth surface 34 which are oppositely arranged, and a reflective layer is arranged on each of the third surface 33 and the fourth surface 34, and the reflective layer is configured to enable specular reflection when light in the light-shaping member 3 is incident on the reflective layer. In this way, light inside the light-shaping element 3 may eventually exit the second surface 32 of the light-shaping element 3 after being specularly reflected by the reflective layer.

In an example of this embodiment, as shown in fig. 5, the third surface 33 and the fourth surface 34 of the light shaping member 3 may be arranged parallel to each other, the third surface 33 of the light shaping member 3 is adjacent to the first surface 31 and adjacent to the second surface 32, and the fourth surface 34 of the light shaping member 3 is adjacent to the first surface 31 and adjacent to the second surface 32. The material of the reflecting layer can adopt metal, such as silver and the like. The reflective layer may be formed by vapor deposition or the like.

In some exemplary embodiments, the light-shaping member 3 may be made of transparent material such as glass, PC (polycarbonate), PMMA (polymethyl methacrylate), and the like. 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.

In some exemplary embodiments, as shown in fig. 2 and 4, the light source 1 may include one or more LED lamps. The plurality of 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 plurality of LED lamps face the first surface 31 of the light shaping member 3. The light source 1 may emit light to the periphery, and the maximum light emitting angle of the light source 1 in each direction of the periphery may be 100 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.

In some exemplary embodiments, as shown in fig. 3 and 4, fig. 3 is a schematic partial cross-sectional structure view of the display device of fig. 2 in some exemplary embodiments, the light emitting surface 22 of the light guiding 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 guiding layer 2 may be provided with a first micro-structural layer including 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 be unlimited, and may be, for example, trapezoidal, triangular, or the like. Thus, by disposing the plurality of second grooves 221 on the light-emitting surface 22 of the light guiding layer 2, the problem of bright lines appearing on the picture due to diffraction can be avoided or reduced, and the propagation distance of the light in the direction away from the light source 1 in the light guiding layer 2 can be increased.

In an example of this embodiment, as shown in fig. 4, the plurality of second grooves 221 may be disposed at intervals in the length direction of the light incident surface 21 of the light guide layer 2, the plurality of second grooves 221 may be disposed in parallel, and a distance between two adjacent second grooves 221 may be smaller than or equal to a distance between adjacent sub-pixels on a display panel in a display device. The ratio of the depth to the width of the second groove 221 may be 1:1 to 2: 1.

In an example of this embodiment, the light guiding layer 2 may be a light guiding plate, and the second groove 221 may be directly disposed on a light emitting surface of the light guiding plate. For example, the light guide plate may be formed by injection molding, and a structure complementary to the shape of the second groove 221 may be disposed on the mold for forming the light guide plate, so that the second groove 221 is formed on the formed light guide plate. Or, the light guiding layer 2 may be a light guiding film, a glue layer may be formed on the light emitting surface of the light guiding film, then a plurality of second grooves 221 are formed on the glue layer by rolling, and then the first microstructure layer is formed after the glue layer is cured.

In some exemplary embodiments, as shown in fig. 2, a second microstructure layer 4 may be disposed on a surface of the light guide layer 2 opposite to the light exit surface, where the second microstructure layer 4 includes a plurality of microstructures 41, and the microstructures 41 are configured such that light in the light guide layer 2 can be emitted from the light exit surface 22 of the light guide layer 2 at a set exit angle after being incident on the microstructures 41 and reflected. For example, the set emitting angle may be-30 degrees to 30 degrees, and when the angle of the light emitted from the light emitting surface 22 of the light guiding layer 2 is 0 degree, the light is emitted perpendicularly to the light emitting surface 22 of the light guiding layer 2. For example, as shown in fig. 4, the microstructure 41 may be a groove, the cross-sectional shape of the groove may be triangular, W-shaped, or the like, and the extending direction of the groove may be perpendicular to the extending direction of the second groove 221.

In some exemplary embodiments, as shown in fig. 2, a protective film 5 may be attached to a side of the light guide layer 2 away from the light exit surface to protect the light guide layer 2. For example, as shown in fig. 2, the protective film 5 may be attached to the surface of the second microstructure layer 4.

In some exemplary embodiments, as shown in fig. 5, the light emitted from the light source 1 enters the light-shaping member 3 from the first surface 31 of the light-shaping member 3, the light emitted from the light source 1 is refracted when passing through the first surface 31 of the light-shaping member 3, the light is refracted through the first surface 31 of the light-shaping member 3 and then irradiates the reflective layers on the third surface 33 and the fourth surface 34 of the light-shaping member 3, the light is finally irradiated to the second surface 32 of the light-shaping member 3 after being specularly reflected by the reflective layers and then exits from the second surface 32 of the light-shaping member 3, and the exit angle of the light finally exiting from the second surface 32 of the light-shaping member 3 in the first plane is smaller than the light emission angle of the light source 1 in the first plane.

In one example of the present embodiment, as shown in fig. 2, 4 and 5, the light source 1 includes a plurality of LED lamps, and the maximum light emitting angle of the LED lamps in each direction around the LED lamps is 100 degrees, which can be understood as the light emitting angle of the LED lamps is-100 degrees to 100 degrees. The light shaping element 3 is made of PC material with the refractive index of 1.58. The first surface 31 of the light-shaping member 3 is a cambered surface protruding towards the light-emitting surface of the light source 1, and the radius of the cambered surface can be designed according to factors such as the refractive index of the light-shaping member 3 and the package size of the LED lamp, and in this example, the radius of the first surface (cambered surface) 31 of the light-shaping member 3 is 0.25 mm. The included angle α between the first inclined surface and the second inclined surface of the rib 321 on the second surface 32 of the light shaping member 3 is a right angle, the height of the rib 321 is a, and the width of the rib 321 is 2b, where a and b are 25 μm. As shown in fig. 7, taking the angles of the light emitted from the center of the light emitting surface of the LED lamp in the first plane (in fig. 7, it can be understood that the included angles between the light and the straight line X or the horizontal plane) are 20 degrees, 30 degrees, 40 degrees, and 50 degrees, respectively, the exit angles in the first plane after passing through the light shaping member 3 are 18 degrees, 6 degrees, 0.7 degrees, and 0.3 degrees, respectively, and thus it can be seen that the light shaping member 3 can converge the beam angle of the light source 1 in the first plane. Table 1 below shows the angles (two significant digits retained) at which light passes through the different surfaces of the light-shaping element 3.

TABLE 1 Angle of light rays passing through different surfaces of the light shaping element

As shown in fig. 8, fig. 8 is a schematic diagram of the luminance distribution of the light emitted by the light source 1 in some exemplary embodiments, and it can be seen that the light emitting angle of the light source 1 is-45 degrees to 45 degrees, the luminance is strongest when the light emitting angle is 0 degree, and the luminance is gradually reduced around 0 degree. As shown in fig. 9, fig. 9 is a schematic diagram of the luminance distribution of the light emitted from the light source 1 of fig. 8 after being shaped by the light shaping unit 3 in some exemplary embodiments, and it can be seen that the exit angle of the light emitted from the light source 1 of fig. 8 after being shaped by the light shaping unit 3 is-30 degrees to 30 degrees, the luminance is strongest when the exit angle is 0 degree, and the luminance is gradually reduced around 0 degree. By comparing fig. 8 and 9, it can be seen that the light-shaping element 3 can converge the beam angle of the light source 1 in the first plane.

As shown in fig. 10, fig. 10 is a schematic view of an optical path of light emitted from the light source 1 in the light guide layer 2 in the display device of fig. 1, and it can be seen that the light emitted from 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 a direction away from the light source 1. As shown in fig. 11, fig. 11 is a schematic view of an optical path of light emitted from the light source 1 in the display device of fig. 2, which is shaped by the light shaping unit 3 and then propagates in the light guide layer 2, and it can be seen that the light emitted from the light source 1 is shaped by the light shaping unit 3 and then enters the light guide layer 2 from the light incident surface 21 of the light guide layer 2 and propagates in a direction away from the light source 1. By comparing fig. 10 and fig. 11, it can be seen that after the light emitted from the light source 1 is shaped by the light shaping unit 3, the included angle between the light and the horizontal plane is smaller and the angular distribution of the light is more concentrated, and the light travels a longer distance in the direction away from the light source 1 in the light guide layer 2.

The embodiment of the utility model also provides a display device, which comprises the light source assembly and the display panel in any embodiment.

In some exemplary embodiments, as shown in fig. 2, the display device includes the light source assembly of any of the above embodiments and the display panel 6, the display panel 6 may be a reflective display panel, and the light source assembly may serve as a 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 a front light source of the reflective liquid crystal display panel. The light emitting surface 22 of the light guiding layer 2 may be attached to the display surface of the display panel 6 through an adhesive layer 7, and the adhesive layer 7 may be made of an optically transparent adhesive. The light emitted from the light-emitting surface 22 of the light-guiding layer 2 is incident on the reflective display panel 6, so that the reflective display panel 6 can display normally when the ambient light is dark.

The display device of the embodiment of the utility model can be as follows: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

In the drawings, the size of the constituent elements, the thickness of layers, or regions may be exaggerated for clarity. Therefore, the embodiments of the present invention are not necessarily limited to the dimensions, and the shape and size of each component in the drawings do not reflect a true scale. In addition, the drawings schematically show some examples, and the embodiments of the present invention are not limited to the shapes or numerical values shown in the drawings.

In the description herein, "parallel" refers to a state where two straight lines form an angle of-10 ° or more and 10 ° or less, and thus includes a state where the angle is-5 ° or more and 5 ° or less. The term "perpendicular" refers to a state in which the angle formed by two straight lines is 80 ° or more and 100 ° or less, and therefore includes a state in which the angle is 85 ° or more and 95 ° or less.

In the description herein, the terms "upper", "lower", "left", "right", "top", "inner", "outer", "axial", "four corners", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present invention, and do not indicate or imply that the structures referred to have a particular orientation, are constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description herein, unless expressly stated or limited otherwise, the terms "connected," "fixedly connected," "mounted," or "coupled" are to be construed broadly and may, for example, be fixedly connected, or detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening elements, or may be connected through the interior of two elements. The meaning of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art as appropriate.

Claims (12)

1. A light source assembly, characterized by: comprises a light guide layer, a light source and a light shaping piece;

the light guide layer comprises an incident surface and an emergent surface which are adjacent, the light source is arranged at the incident surface of the light guide layer, and the light shaping piece is arranged between the light source and the incident surface of the light guide layer;

the light shaping piece comprises a first surface and a second surface arranged towards the light inlet surface of the light guide layer, light emitted by the light source can be emitted into the light shaping piece from the first surface of the light shaping piece and emitted from the second surface of the light shaping piece, and light emitted from the second surface of the light shaping piece can be emitted into the light guide layer from the light inlet surface of the light guide layer and emitted from the light outlet surface of the light guide layer;

the light shaping piece is arranged in a manner that the emergent angle of light emitted from the second surface of the light shaping piece in a first plane is smaller than the light emitting angle of the light source in the first plane, and the first plane is a plane which passes through the central point of the light emitting surface of the light source and is perpendicular to the light emitting surface and the light incident surface of the light guide layer.

2. The light source module as recited in claim 1, wherein: the first surface and the second surface of the light shaping piece are arranged oppositely, and the first surface of the light shaping piece faces the light emitting surface of the light source.

3. The light source module as recited in claim 2, wherein: the first surface of the light shaping piece is an arc surface protruding towards the light emitting surface of the light source.

4. The light source module as recited in claim 3, wherein: the second surface of the light shaping piece is provided with a plurality of ribs extending along the length direction of the light incident surface of the light guide layer.

5. The light source module as recited in claim 4, wherein: the cross section of each rib is triangular, a first groove is formed between every two adjacent ribs, and the cross section of each first groove is triangular.

6. The light source module as recited in claim 4, wherein: the cross section of the convex rib is in the shape of an isosceles right triangle, and the convex rib comprises a first inclined plane and a second inclined plane which are vertically crossed.

7. The light source module as recited in claim 4, wherein: the light shaping piece further comprises a third surface and a fourth surface which are arranged oppositely, the third surface and the fourth surface are both provided with a reflecting layer, and the reflecting layer is arranged to enable the light in the light shaping piece to be incident on the reflecting layer and then to generate mirror reflection.

8. The light source module as recited in claim 1, wherein: the refractive index of the light shaping member is 1.4 to 1.6.

9. The light source assembly according to any one of claims 1 to 8, wherein: the light emitting surface of the light guide layer is provided with a plurality of second grooves extending in the direction far away from the light source, or the light emitting surface of the light guide layer is provided with a first microstructure layer which comprises a plurality of second grooves extending in the direction far away from the light source;

the ratio of the depth to the width of the second trench is 1:1 to 2: 1.

10. The light source assembly according to any one of claims 1 to 8, wherein: the surface of the light guide layer opposite to the light emergent surface is provided with a second microstructure layer, the second microstructure layer comprises a plurality of microstructures, and the microstructures are arranged in a way that light in the light guide layer can be emitted from the light emergent surface of the light guide layer according to a set emergent angle after being incident on the microstructures for reflection.

11. A display device, characterized in that: comprising a light source assembly according to any one of claims 1 to 10 and a display panel.

12. The display device according to claim 11, wherein: the display panel is a reflective liquid crystal display panel, and the light source assembly is arranged on the display side of the display panel.

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