CN109581746A

CN109581746A - Backlight module and display device

Info

Publication number: CN109581746A
Application number: CN201811636918.XA
Authority: CN
Inventors: 杜欣航
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-04-05
Anticipated expiration: 2038-12-29
Also published as: CN109581746B

Abstract

The invention discloses a kind of backlight module and display devices, comprising: at least one is located at the notch at edge；Output optical zone, the non-output optical zone around output optical zone；Output optical zone includes first edge, and first edge forms at least one first notch to output optical zone inner recess；Non- output optical zone includes the first non-output optical zone being adapted with the location and shape of the first notch；Light guide plate and light source assembly positioned at output optical zone, light source assembly are located at at least side of light guide plate, and the light-emitting surface of light source assembly is towards the incidence surface of light guide plate；Glue frame positioned at non-output optical zone, glue frame include the first sub- glue frame positioned at the first non-output optical zone, and the first sub- glue frame includes the medial surface close to light guide plate side；Groove includes the first surface being connected, second surface and third surface, and first surface and third surface are along the both ends for being relatively arranged on second surface perpendicular to the direction of light guide plate.Improve the display effect of display terminal.

Description

Backlight module and display device

Technical Field

The invention relates to the technical field of display, in particular to a backlight module and a display device.

Background

The backlight module is one of the key components of the liquid crystal display, and is used for providing a sufficient light source with uniform brightness and distribution for the liquid crystal display panel, and the luminous effect of the backlight module directly influences the visual effect of the liquid crystal display. With the development of liquid crystal display technology, the application field of liquid crystal displays, especially color liquid crystal displays, is also widening. Pulled by the market of liquid crystal displays, the backlight industry is in a splendid view. Besides the direct effect on the display quality of LCD, the cost of backlight source is 30-50% of the LCD module, and the power consumption is more 75% of the LCD module, which is a very important component of the LCD module. Since high performance backlight technology is required to be used in conjunction with high-definition and large-size LCDs, the LCD industry is striving to develop new application fields, and the high performance of the backlight technology (such as high brightness, low cost, low power consumption, and light and thin) plays a role as a rear engineering assistant.

With the development of display panels, people no longer only satisfy the conventional performance indexes of large size, high definition and the like of the display panel, and have more diversified requirements on the appearance of the display panel, so that a special-shaped display panel appears, and a special-shaped backlight module correspondingly appears, for example, areas formed by special-shaped edges and used for placing cameras exist in both the display panel and the backlight module.

In the conventional special-shaped backlight module, due to the structural limitation, a dark area is generated in a partial area of the backlight module, and the display effect of the display terminal is affected.

Disclosure of Invention

In view of the above, the present invention provides a backlight module, including: at least one notch located at the edge; the light-emitting area and the non-light-emitting area surrounding the light-emitting area are arranged in the light-emitting area; the light emergent area comprises a first edge, and the first edge is sunken towards the interior of the light emergent area to form at least one first notch; the non-light-emitting area comprises a first non-light-emitting area which is adaptive to the position and the shape of the first notch; the light source assembly is positioned on at least one side of the light guide plate, and the light emitting surface of the light source assembly faces the light incident surface of the light guide plate; the glue frame is positioned in the non-light-emitting area and comprises a first sub-glue frame positioned in the first non-light-emitting area, the first sub-glue frame comprises an inner side surface close to one side of the light guide plate, and the inner side surface is sunken towards the direction far away from the light-emitting area to form a groove; the groove comprises a first surface, a second surface and a third surface which are connected, and the first surface and the third surface are oppositely arranged at two ends of the second surface along the direction vertical to the light guide plate.

The invention also provides a display device, which comprises a backlight module and a display panel arranged opposite to the backlight module, wherein the backlight module is provided by the invention; the display panel is provided with a through hole or a light-transmitting area at a position corresponding to the notch.

Compared with the prior art, the backlight module and the display device provided by the invention at least realize the following beneficial effects:

the non-light-emitting area comprises a first non-light-emitting area which is adaptive to the position and the shape of the first notch, the inner side surface of the first sub-rubber frame is recessed towards the direction far away from the light-emitting area to form a groove, light emitted by the side surface, close to the inner side surface of the first sub-rubber frame, of the light guide plate is reflected on the first surface and the third surface of the groove, the light emitted by the side surface, close to the inner side surface of the first sub-rubber frame, of the light guide plate is partially reflected back to the light guide plate, the utilization rate of light in the area near the first edge of the light-emitting area is improved, and the condition of a dark area formed by the fact that the part area near the first edge of the light-emitting area is shielded by the first sub-. The light-emitting brightness in the light-emitting area is kept consistent as much as possible, and therefore the display effect of the display terminal is improved.

Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic plan view of a backlight module according to the present invention;

FIG. 2 is a schematic cross-sectional view of the backlight module of FIG. 1 along A-A';

FIG. 3 is a schematic view of a partial cross-sectional structure of another backlight module according to the present invention;

FIG. 4 is a schematic view of a partial cross-sectional structure of a backlight module according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a reflective structure provided by the present invention;

FIG. 6 is a schematic view of a partial cross-sectional structure of a backlight module according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first sub-frame in the backlight module shown in fig. 4;

FIG. 8 is a schematic cross-sectional view of the backlight module shown in FIG. 1 along line B-B';

FIG. 9 is a schematic cross-sectional view taken along A-A' of the backlight module of FIG. 1;

FIG. 10 is a schematic plan view of a display device according to the present invention;

fig. 11 is a schematic cross-sectional view of the display device of fig. 10 taken along line C-C'.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 1 is a schematic plan view of a backlight module according to the present invention, fig. 2 is a schematic cross-sectional view of the backlight module along a-a' in fig. 1, and referring to fig. 1 and fig. 2, the present embodiment provides a backlight module, including: at least one notch 10 located at edge a 1;

the light emergent area AA and the non-light emergent area NA surrounding the light emergent area AA;

the light emergent area AA comprises a first edge A2, and the first edge A2 is recessed towards the inside of the light emergent area AA to form at least one first notch 20;

the non-light-exiting area NA includes a first non-light-exiting area NA1 adapted to the position and shape of the first notch 21;

the light guide plate 31 and the light source assembly 32 are located in the light emergent area AA, the light source assembly 32 is located on at least one side of the light guide plate 31, and the light emergent surface of the light source assembly 32 faces the light incident surface of the light guide plate 31;

the glue frame 40 is located in the non-light-exiting area NA, the glue frame 40 includes a first sub-glue frame 41 located in the first non-light-exiting area NA1, the first sub-glue frame 41 includes an inner side surface 42 close to one side of the light guide plate 31, and the inner side surface 42 is recessed towards a direction far away from the light-exiting area AA to form a groove 50;

the groove 50 includes a first surface 51, a second surface 52 and a third surface 53 connected to each other, and the first surface 51 and the third surface 53 are oppositely disposed at two ends of the second surface 52 along a direction perpendicular to the light guide plate 31.

Specifically, the backlight module provided in this embodiment is used to provide a light source for the display panel, and the light emitting area AA emits light and is located in a central area of the area where the backlight module is located. Backlight unit's marginal region is a non-light-emitting area NA, and non-light-emitting area NA can set up gluey frame 10.

The backlight module provided by the embodiment is a special-shaped backlight module, and specifically, the backlight module includes at least one notch 10 located at the edge a1, the first edge a2 of the light emergent area AA is recessed towards the inside of the light emergent area AA to form at least one first notch 20, and the non-light emergent area NA includes a first non-light emergent area NA1 adapted to the position and shape of the first notch 21. In this embodiment, only the light exiting area AA includes one first notch 20, and the non-light exiting area NA includes one first non-light exiting area NA1 for example, optionally, the light exiting area AA may further include two or more first notches 20, and the non-light exiting area NA may further include two or more first non-light exiting areas NA1, which is not limited in this embodiment.

The backlight module provided by this embodiment further includes a light guide plate 31 and a light source assembly 32 located in the light exit area AA, and both the light guide plate 31 and the light source assembly 32 are located in the accommodating space formed by the rubber frame 40; optionally, structures such as other optical films may be further disposed in the accommodating space formed by the rubber frame 40, and this embodiment is not repeated. The light source assembly 32 may be, for example, an LED lamp, which may be mounted on and electrically connected to the printed circuit board, and the light emitting surface of the LED may be opposite to the light incident surface of the light guide plate 31, and the light guide plate 31 is provided with light guide points, so that incident light irradiates each light guide point on the light guide plate 31 and then spreads towards each angle, and then the incident light is emitted from the light emitting surface of the light guide plate 31 by destroying the reflection condition, and uniform light emission can be realized on the light emitting surface of the light guide plate 31 through the light guide points with various.

The non-light-emitting area NA comprises a first non-light-emitting area NA1 which is matched with the position and the shape of the first notch 21, the inner side face 42 of the first sub-rubber frame 41 is recessed towards the direction far away from the light-emitting area AA to form a groove 50, the rubber frame is usually made of resin materials, and the non-light-emitting area NA has a smooth and flat surface and has a good reflection effect on light. Therefore, the first surface 51, the second surface 52 and the third surface 53 of the groove 50 have a better reflection effect on the light. Light emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-adhesive frame 41 is reflected on the first surface 51, the second surface 52 and the third surface 53 in the groove 50, and a part of light emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-adhesive frame 41 is reflected back to the light guide plate, so that the utilization rate of light in an area near the first edge a2 in the light exit area AA is improved, and the condition of a dark area formed by the shielding of the first sub-adhesive frame 41 in a part of the area near the first edge a2 in the light exit area AA is effectively relieved. The light-emitting brightness of each area in the light-emitting area AA is kept consistent as much as possible, and the display effect of the display terminal is improved.

Fig. 3 is a schematic partial cross-sectional view of another backlight module provided in the present invention, referring to fig. 1 and 3, optionally, the backlight module further includes a reflective structure 60 disposed on the first surface 51 and the third surface 53.

Specifically, the reflection structures 60 are disposed on the first surface 51 and the third surface 53, a light portion emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-adhesive frame 41 is reflected between the first surface 51 and the reflection structures 60 on the third surface 53, a light portion emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-adhesive frame 41 can be transmitted in the groove 50, and a part of the light is reflected back to an area adjacent to the light guide plate 31 and the groove 50 in the transmission process, so that the utilization rate of the light in the area near the first edge a2 in the light exit area AA is improved, and the condition of a dark area formed by the shielding of the first sub-adhesive frame 41 in the part of the area near the first edge a2 in the light exit area AA is further alleviated.

Fig. 4 is a schematic partial cross-sectional structure of another backlight module provided by the present invention, referring to fig. 1 and fig. 4, optionally, wherein the first sub-frame 41 includes at least one first cross-section 43, an intersection of the first surface 51 and the first cross-section 43 is a first intersection 54, an intersection of the second surface 52 and the first cross-section 43 is a second intersection 55, an intersection of the third surface 53 and the first cross-section 43 is a third intersection 56, and the first cross-section 43 is perpendicular to the plane of the light guide plate 31 and perpendicular to the first edge a 2;

the angle between the first intersection line 54 and the second intersection line 55 is θ 1, and the angle between the third intersection line 56 and the second intersection line 55 is θ 2; wherein,

135°≤θ1≤150°，135°≤θ2≤150°。

specifically, in the first cross section, the angle θ 1 between the first intersection line 54 and the second intersection line 55, and the angle θ 2 between the third intersection line 56 and the second intersection line 55 are equal to or greater than 135 ° and equal to or less than 150 ° and equal to or greater than 135 ° and equal to or less than 150 °, and a part of light emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-bezel 41 is reflected on the first surface 51 and the third surface 53 in the groove 50; and a part of the light is reflected between the first surface 51 and the reflective structure 60 on the third surface 53, so that the part of the light is transmitted in the groove 50, and the part of the light is partially reflected back to the light guide plate during the transmission in the groove 50, thereby improving the utilization rate of the light in the region near the first edge a2 in the light output area AA, alleviating the dark region formed by the shielding of the first sub-adhesive frame 41 in the region near the first edge a2 in the light output area AA, keeping the light output brightness in the light output area AA as uniform as possible, and improving the display effect of the display terminal. When θ 1 > 150 ° and θ 2 > 150 °, among the light rays emitted from the light guide plate 31 and the side surface of the first sub-adhesive frame 41 close to the inner side surface 42, the light rays reflected back to the light guide plate 31 through the first surface 51 and the third surface 53 are reduced, and the light rays are not favorably transmitted in the groove 50 through the reflective structures 60 on the first surface 51 and the third surface 53, and the dark region phenomenon caused by the shielding of the first sub-adhesive frame 41 in the partial region near the first edge a2 in the light emitting region AA is not favorably solved. When θ 1 is less than 135 ° and θ 2 is less than 135 °, among the light rays emitted from the side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-adhesive frame 41, the light rays reflected back to the light guide plate 31 through the first surface 51 and the third surface 53 are also reduced, and the light rays transmitted in the groove 50 are not easy to be reflected back to the area where the light guide plate 31 and the groove 50 are adjacent in the transmission process, which is not easy to solve the phenomenon of dark areas formed by the shielding of the first sub-adhesive frame 41 in the partial area near the first edge a2 in the light emitting area AA.

With continuing reference to fig. 1 and fig. 4, optionally, the height of the first sub-frame 41 in the direction perpendicular to the plane of the light guide plate 31 is L, and the length of the second intersection line 55 is H;

wherein, H is more than or equal to L/2 and less than or equal to 2L/3, and L is more than 0.

Specifically, the direction perpendicular to the plane of the light guide plate 31 is taken as a first direction X, in the first direction X, the height of the first sub-adhesive frame 41 is L, the length of the second intersection line 55 is H, and H is greater than or equal to L/2 and less than or equal to 2L/3, which is beneficial for the light emitted from the surface of one side of the light guide plate 31 close to the inner side 42 of the first sub-adhesive frame 41 to be emitted and transmitted in the groove 50, so that the condition of a dark area formed by the shielding of the first sub-adhesive frame 41 in a partial area near the first edge a2 in the light emitting area AA is relieved, and the influence of the groove 50 on the structural stability of the first sub-adhesive frame 41 is reduced. When H is less than L/2, the height of the groove 50 in the first direction X may be reduced, and at this time, the portion of the light emitted from the side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-frame 41, which enters the groove 50, is reduced; it is also possible to increase the length of the first intersection line 54 and the third intersection line 56, which increases the influence of the groove 50 on the structural stability of the first sub-frame 41. When H > 2L/3, the lengths of the first intersection line 54 and the third intersection line 56 are reduced, which is not favorable for the light emitted from the side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-frame 41 to be emitted from the first surface 51 and the third surface 53.

Fig. 5 is a schematic structural diagram of a reflective structure provided by the present invention, referring to fig. 4 and 5, and optionally, the reflective structure 60 is a triangular prism structure, and the reflective structure 60 is located in the groove 50.

Specifically, the reflective structure 60 is disposed on the first surface 51 and the third surface 53 in the groove 50, the reflective structure 60 is a triangular prism structure, the reflective structure 60 may be made of metal, and has a good reflective effect on light rays, and the reflective structure 60 of the triangular prism structure protrudes from the plane of the first surface 51 or the plane of the third surface 53, light can be reflected on each surface of the reflective structure 60, light rays in more directions of light rays emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-frame 41 can be repeatedly reflected between the reflective structure 60 on the first surface 51 and the third surface 53, and the part of light rays can be transmitted in the groove 50, and a part of light rays exists in the transmission process and is reflected back to an area of the light guide plate 31 adjacent to the groove 50 through the reflective structure 60, so as to improve the utilization rate of light rays in an area near the first edge a2 in the light exit area AA, the dark area formed by the first sub-frame 41 in the partial area near the first edge a2 in the light exit area AA is further reduced.

Fig. 6 is a schematic partial cross-sectional view of another backlight module provided in the present invention, referring to fig. 6, optionally, wherein the reflective structure 60 is a reflective layer 60a covering the first surface 51 and the third surface 53.

Specifically, the reflective layer 60a is disposed on the first surface 51 and the third surface 53 in the groove 50, the reflective layer 60a may be made of metal, and has a good reflective effect on light, a part of light emitted from a side surface of the light guide plate 31 close to the inner side surface 42 of the first sub-frame 41 may be repeatedly reflected between the first surface 51 and the reflective layer 60a on the third surface 53, so that the part of light may be transmitted in the groove 50, and during the transmission process, a part of light may be reflected back to an area adjacent to the light guide plate 31 and the groove 50 through the reflective layer 60a, so as to improve the utilization rate of light in the area near the first edge a2 in the light exit area AA, and further alleviate a dark area formed by the shielding of the first sub-frame 41 in the area near the first edge a2 in the light exit area AA.

It should be noted that, in other embodiments of the present invention, the reflective structure may also be other structures, and the light may be reflected and transmitted in the groove through the reflective structures disposed on the first surface and the third surface in the groove, which is not described in detail herein.

Fig. 7 is a schematic structural diagram of the first sub-frame in the backlight module shown in fig. 4, referring to fig. 1, fig. 4 and fig. 7, optionally, wherein a vertical projection of the reflective structure 60 on the first surface 51 on the plane of the light guide plate 31 is located between vertical projections of two adjacent reflective structures 60 on the third surface 51 on the plane of the light guide plate 31.

Specifically, the perpendicular projection of the reflective structure 60 on the first surface 51 to the plane of the light guide plate 31 is located between the perpendicular projections of the two adjacent reflective structures 60 on the third surface 51 to the plane of the light guide plate 31, and correspondingly, the perpendicular projection of the reflective structure 60 on the third surface 53 to the plane of the light guide plate 31 is located between the perpendicular projections of the two adjacent reflective structures 60 on the first surface 51 to the plane of the light guide plate 31, that is, the perpendicular projection of the reflective structure 60 on the first surface 51 to the plane of the light guide plate 31 and the perpendicular projection of the reflective structure 60 on the third surface 53 to the plane of the light guide plate 31 are alternately arranged, and light can be reflected and transmitted in the groove 50 through the reflective structures 60 on the first surface 51 and the third surface 53. For example, the light irradiates the reflective structure 60 on the first surface 51 to be reflected, reflects to the reflective structure 60 on the third surface 53 to be reflected again, and reflects to the reflective structure 60 on the first surface 51 again, so that the light can be reflected and transmitted in the groove 50.

With continued reference to fig. 1, 4 and 7, optionally, the distance between two adjacent reflective structures 60 on the first surface 51 is h1, and the distance between two adjacent reflective structures 60 on the third surface 53 is h 2; wherein,

H≤h1≤1.5H，H≤h2≤1.5H。

specifically, the length of the second intersection line 55 is H, the distance between two adjacent reflecting structures 60 on the first surface 51 is H1, and H1 is not less than H1.5H; the distance between two adjacent reflecting structures 60 on the third surface 53 is H2, H2H 1.5H, which is favorable for the light to be reflected and transmitted in the groove 50 through the reflecting structures 60 on the first surface 51 and the third surface 53. When H1 is less than H and H2 is less than H, more reflecting structures 60 are arranged on the first surface 51 and the third surface 53, so that the production cost is increased; when H1 is greater than 1.5H and H2 is greater than 1.5H, the distance between two adjacent reflective structures 60 on the first surface 51 and the distance between two adjacent reflective structures 60 on the third surface 53 are both too large, which is not favorable for the reflection and transmission of light in the grooves 50 by the reflective structures 60 on the first surface 51 and the third surface 53.

Fig. 8 is a schematic cross-sectional view of the backlight module along B-B' in fig. 1, referring to fig. 1 and 8, and optionally, wherein the light exiting area AA includes a second edge A3 connected to the first edge a2, and the light source assembly 32 is located at a side of the light guide plate 31 adjacent to the second edge A3.

Specifically, the backlight module provided in this embodiment is a side-type backlight module, and the light source assembly 32 is located at one side of the light guide plate 31 adjacent to the second edge a3, in other embodiments of the present invention, the light source assembly 32 may also be located between the light guide plate 31 and other edges of the light exit area AA, which is not repeated herein.

Fig. 9 is a schematic cross-sectional view of the backlight module along a-a' in fig. 1, and referring to fig. 1 and 9, optionally, the backlight module further includes a metal frame 70 located in the non-light emitting area NA, where the metal frame 70 includes a bottom plate 71 and a side plate 72 surrounding an edge of the bottom plate 71;

the rubber frame 40 is disposed around a surface of the side plate 72 on a side close to the light guide plate 31.

Specifically, the backlight module may further include a metal frame 70, the metal frame 70 has certain rigidity, the rubber frame 40 is disposed around the surface of the side plate 72 close to one side of the light guide plate 31, the rubber frame 40 is embedded in the metal frame 70, other structures in the light guide plate 31, the light source assembly 32 and the backlight module may be located in an accommodating space formed by the rubber frame 40 and the metal frame 70, and the metal frame 70 further protects the structures in the backlight module when external force is applied.

Referring to fig. 1 and 9, optionally, the backlight module further includes an optical film 33 and a bottom reflector 34, and the light guide plate 31 is located between the optical film 33 and the bottom reflector 34;

the bottom reflection sheet 34, the light guide plate 31 and the optical film 33 are provided with second notches at positions corresponding to the first notches 20, and the second notches are the same as the first notches 20 in shape.

Specifically, the backlight module may further include a bottom reflector 34 and an optical film 33. The light guide plate 31 is disposed between the optical film 33 and the bottom reflection sheet 34, and the bottom reflection sheet 34 is used for reflecting the light emitted from the light source assembly 32 to the bottom surface of the light guide plate 31 into the light guide plate 31. The optical films 33 are disposed on the light-emitting surface of the light guide plate 31, the optical films 33 are, for example, a diffusion sheet, a prism sheet, etc., the number of the optical films 33 is at least one, and the functions of the optical films 33 may be different. Further, the bottom reflection sheet 34, the light guide plate 31 and the optical film 33 are further provided with a second notch at a position corresponding to the first notch 20, and the second notch has the same shape as the first notch 20.

The embodiment provides a display device, which comprises a backlight module and a display panel, wherein the display panel is arranged opposite to the backlight module;

the display panel is provided with a through hole or a light-transmitting area at a position corresponding to the notch.

Referring to fig. 10 and 11, fig. 10 is a schematic plan view of a display device according to the present invention, and fig. 11 is a schematic cross-sectional view of the display device shown in fig. 10 along C-C'. The display device 1000 includes a backlight module 100 and a display panel 200. The backlight module 100 is a backlight module provided in any of the above embodiments of the present invention; the display panel 200 may be a liquid crystal display panel, and includes an array substrate 210 and a color filter substrate 230 that are disposed opposite to each other, and a liquid crystal layer 220 is disposed between the array substrate 210 and the color filter substrate 230.

The display panel 200 has a through hole or a light-transmitting area at a position corresponding to the notch 10 of the backlight module 100, and the notch 10 can be used for placing electronic components.

Fig. 10 and 11 illustrate the display device 1000 by taking a mobile phone as an example, but it should be understood that the display device provided in the embodiment of the present invention may be other display devices having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device provided by the embodiment of the present invention has the beneficial effects of the backlight module provided by the embodiment of the present invention, and specific reference may be made to the specific description of the backlight module in the foregoing embodiments, and details of the embodiment are not repeated herein.

With continued reference to fig. 10 and 11, optionally, wherein the display device further comprises a camera element 300, the camera element 300 is located within the notch 10.

In this embodiment, the image pickup device 300 is exemplarily shown to be located in the notch 10, and in other embodiments of the present invention, other signal receiving devices may also be placed in the notch 10, which is not described in detail herein.

By the embodiment, the backlight module and the display device provided by the invention at least realize the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A backlight module, comprising:

at least one notch located at the edge;

the light-emitting area and the non-light-emitting area surround the light-emitting area;

the light emergent area comprises a first edge, and the first edge is sunken towards the interior of the light emergent area to form at least one first notch;

the non-light-emitting area comprises a first non-light-emitting area which is adaptive to the position and the shape of the first notch;

the light source assembly is positioned on at least one side of the light guide plate, and the light emitting surface of the light source assembly faces the light incident surface of the light guide plate;

the glue frame is positioned in the non-light-emitting area and comprises a first sub-glue frame positioned in the first non-light-emitting area, the first sub-glue frame comprises an inner side surface close to one side of the light guide plate, and the inner side surface is recessed towards the direction far away from the light-emitting area to form a groove;

the groove comprises a first surface, a second surface and a third surface which are connected, and the first surface and the third surface are oppositely arranged at two ends of the second surface along a direction perpendicular to the light guide plate.

2. The backlight module according to claim 1, further comprising a reflective structure disposed on the first surface and the third surface.

3. The backlight module according to claim 2,

the first sub-frame comprises at least one first cross section, the intersection line of the first surface and the first cross section is a first intersection line, the intersection line of the second surface and the first cross section is a second intersection line, the intersection line of the third surface and the first cross section is a third intersection line, and the first cross section is perpendicular to the plane of the light guide plate and perpendicular to the first edge;

an angle between the first intersection line and the second intersection line is theta 1, and an angle between the third intersection line and the second intersection line is theta 2; wherein,

135°≤θ1≤150°，135°≤θ2≤150°。

4. the backlight module according to claim 3,

the height of the first sub-rubber frame in the direction perpendicular to the plane of the light guide plate is L, and the length of the second intersection line is H;

5. The backlight module according to claim 4,

the reflection structure is a triangular prism structure, and the reflection structure is located in the groove.

6. The backlight module according to claim 5,

the vertical projection of the reflection structures on the first surface on the plane where the light guide plate is located is positioned between the vertical projections of two adjacent reflection structures on the third surface on the plane where the light guide plate is located.

7. The backlight module according to claim 6,

the distance between two adjacent reflecting structures on the first surface is h1, and the distance between two adjacent reflecting structures on the third surface is h 2; wherein,

H≤h1≤1.5H，H≤h2≤1.5H。

8. the backlight module according to claim 1,

the reflective structure is a reflective layer covering the first surface and the third surface.

9. The backlight module according to claim 1,

the light emergent area comprises a second edge connected with the first edge, and the light source assembly is positioned on one side of the light guide plate adjacent to the second edge.

10. The backlight module according to claim 1, further comprising a metal frame disposed in the non-light-emitting region, wherein the metal frame comprises a bottom plate and side plates surrounding edges of the bottom plate;

the rubber frame is arranged around the surface of one side, close to the light guide plate, of the side plate.

11. The backlight module according to claim 1, further comprising an optical film and a bottom reflector plate, wherein the light guide plate is located between the optical film and the bottom reflector plate;

and the bottom reflector plate, the light guide plate and the optical diaphragm are provided with second notches at positions corresponding to the first notches, and the second notches are the same as the first notches in shape.

12. A display device, comprising a backlight module and a display panel disposed opposite to the backlight module, wherein the backlight module is the backlight module according to any one of claims 1 to 11;

13. The display device of claim 12, further comprising an image capture element positioned within the notch.