CN112485948A

CN112485948A - Backlight module and display device

Info

Publication number: CN112485948A
Application number: CN202011576834.9A
Authority: CN
Inventors: 黄阿海
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-03-12
Anticipated expiration: 2040-12-28
Also published as: CN112485948B

Abstract

The invention discloses a backlight module and a display device: the backlight module comprises a frame body, wherein the frame body comprises a functional area and a first area which are adjacent, the first area comprises at least one thinning area, and the thickness of the thinning area is smaller than that of the functional area; the first region further comprises a first transition region, the first transition region being located between the thinning region and the functional region; the thickness of the end of the first transition area connected with the thinning area is equal to the thickness of the thinning area, the thickness of the end of the first transition area connected with the functional area is equal to the thickness of the functional area, and the first transition area at least comprises a first thickness area and a second thickness area along the direction of the thinning area pointing to the functional area, the second thickness area is positioned on one side of the first thickness area close to the functional area, and the thickness of the first thickness area is smaller than that of the second thickness area. The first thinning area can be thinned locally, so that the weight can be reduced, and the cost can be reduced.

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

With the rapid development of display technologies, liquid crystal display devices (such as lcd televisions, lcd displays, lcd screens, etc.) are increasingly widely used in production and life by virtue of low voltage driving, flat panel structure, large amount of display information, easy colorization, long service life, no radiation and no pollution. However, the lcd device is a passive display device, which cannot emit Light, and therefore a backlight Unit (BLU) is required to be disposed below the lcd panel to provide the required Light source, so as to achieve the display effect. At present, the widely developed demand also puts higher demands on the liquid crystal display device, and in terms of the external dimensions, it is desirable that the thickness of the liquid crystal display device is thinner as well as better. Particularly, in the coming 5G liquid crystal display device, more antennas and other devices are required, which results in the whole liquid crystal display device being heavier and affects the use experience, so that it is significant to reduce the weight on the premise of not changing the function and the quality.

Disclosure of Invention

In view of this, the present invention provides a backlight module and a display device, in which the first thinning region is arranged to reduce the weight and the cost by local thinning.

In one aspect, the present invention provides a backlight module, including:

the frame body comprises a functional region and a first region which are adjacent, the first region comprises at least one thinning region, and the thickness of the thinning region is smaller than that of the functional region;

the first region further comprises a first transition region, the first transition region being located between the thinned region and the functional region;

first transition district with the thickness of the one end that the attenuate region is connected with the thickness in attenuate region equals, first transition district with the thickness of the one end that the functional region is connected with the thickness of functional region equals, and follows the attenuate region points to in the direction of functional region, first transition district includes first thickness district and second thickness district at least, the second thickness district is located first thickness district is close to one side of functional region, the thickness of first thickness district is less than the thickness of second thickness district.

In another aspect, the present invention provides a display device including any one of the backlight modules provided in the present application.

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

according to the backlight module and the display device, the frame body comprises the adjacent functional area and the first area, the first area comprises at least one thinning area, and the thickness of the thinning area is smaller than that of the functional area. The frame body is provided with the thinning area, so that the frame body is locally thinned, the weight can be reduced, and the cost is reduced. Further, the first region further comprises a first transition region, and the first transition region is positioned between the thinning region and the functional region; and in the direction of pointing to the functional region along the thinning region, the first transition region at least comprises a first thickness region and a second thickness region, the second thickness region is positioned at one side of the first thickness region close to the functional region, and the thickness of the first thickness region is smaller than that of the second thickness region. The thickness difference between attenuate region and the functional region exists the difference of section and receives stress fracture easily promptly, set up first transition district between attenuate region and functional region, and first transition district is including being close to the first thickness district of attenuate region one side and the second thickness district that is close to functional region one side, the thickness in first thickness district is less than the thickness of second thickness, first transition district can be so that there is a transition district between attenuate region and the functional region through setting up first thickness district and second thickness district promptly, avoid the great stress of thickness difference between attenuate region and the functional region to take place the fracture easily.

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 structural diagram of a backlight module in the prior art;

FIG. 2 is a cross-sectional view taken along line N-N' of FIG. 1;

FIG. 3 is a schematic structural diagram of a backlight module according to the present invention;

FIG. 4 is a cross-sectional view taken along line M-M' of FIG. 3;

FIG. 5 is a further cross-sectional view taken along line M-M' of FIG. 3;

FIG. 6 is a further cross-sectional view taken along line M-M' of FIG. 3;

FIG. 7 is a cross-sectional view taken along line H-H' of FIG. 3;

FIG. 8 is a further sectional view taken along line H-H' of FIG. 3;

FIG. 9 is a further sectional view taken in the direction H-H' of FIG. 3;

FIG. 10 is a top view of the support structure of FIG. 9;

FIG. 11 is a further top view of the support structure of FIG. 9;

FIG. 12 is a further top view of the support structure of FIG. 9;

fig. 13 is a schematic view of a display device according to the present invention.

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 and 2 show a backlight module in the prior art, in which fig. 1 is a schematic structural diagram of the backlight module in the prior art, and fig. 2 is a cross-sectional view along the direction N-N' in fig. 1. A backlight module 100 provided in the prior art includes a frame 01, and a reflection layer 02, a light guide layer 03 and a light source 04 located on the frame 01, where the light guide layer 03 is used to emit light emitted by the light source 04 out of a light emitting surface C of the backlight module 200 for subsequently providing a display light source for a display device; the reflective layer 02 is used for reflecting the light emitted by the light source 04, so that the light can be emitted out of the light emitting surface C of the backlight module 200 through the light guide layer 03, and the utilization rate of the light emitted by the light source 04 is improved. In order to realize the lightness and thinness of the backlight module 100, the frame body 01 comprises a plurality of hollow areas 011, but the iron frame provided with the hollow areas 011 can cause the problems of uneven light leakage display, weakened iron frame strength, difficulty in controlling flatness, falling off and the like.

In order to solve the above technical problems, the present invention provides a backlight module and a display device. The backlight module and the display device provided by the invention are described in detail below.

In this embodiment, please refer to fig. 3 and 4, in which fig. 3 is a schematic structural diagram of a backlight module according to the present invention, and fig. 4 is a cross-sectional view along the direction M-M' in fig. 3. The backlight module 200 provided in this embodiment includes: the frame body 1 comprises a functional region A and a first region B which are adjacent, wherein the first region A comprises at least one thinned region A1, and the thickness of the thinned region A1 is smaller than that of the functional region B; the first region a further includes a first transition region a2, the first transition region a2 being located between the thinned region a1 and the functional region B; the thickness of the end of the first transition region a2 connected with the thinned region a1 is equal to the thickness of the thinned region a1, the thickness of the end of the first transition region a2 connected with the functional region B is equal to the thickness of the functional region B, and in the direction from the thinned region a1 to the functional region B, the first transition region a2 at least comprises a first thickness region a21 and a second thickness region a22, the second thickness region a22 is located on the side of the first thickness region a21 close to the functional region B, and the thickness of the a21 of the first thickness region is smaller than that of the second thickness region a 22.

The number of the thinned regions a1 in the first region a is not limited in the present invention, and may be set according to actual conditions, and when the first region a includes a plurality of thinned regions a1, transition regions may also be set between the thinned region a1 and other non-thinned regions in the first region a, and the use is the same as the function of the first transition region a2 between the thinned region a1 and the functional region B, and will not be described herein again.

It can be understood that by providing the thinned region a1 in the first region a of the frame 1, the thickness of the thinned region a1 is smaller than that of the functional region B, that is, by providing part of the thinned region a1 of the frame 1, the weight and the cost can be effectively reduced. Meanwhile, the thickness of the thinning region A1 is smaller than that of the functional region B, but the thinning region A1 is not a hollow region, and compared with the hollow region in the prior art, the thinning region A1 can effectively prevent the strength of the frame body 1 from being reduced due to the hollow region, and the external foreign matters can be prevented from easily falling into the backlight module 200 to cause white spots and the external water vapor to enter to cause film material folds, so that the grade effect can be influenced. Further, the first region a of the present invention further includes a first transition region a2, the first transition region a2 is located between the thinned region a1 and the functional region B, the first transition region a2 includes at least a first thickness region a21 and a second thickness region a22, the second thickness region a22 is located on a side of the first thickness region a21 close to the functional region B, and a21 thickness of the first thickness region is smaller than a thickness of the second thickness region a 22. Because the thickness difference between the thinned region A1 and the functional region B has a step difference, the fracture is easy to occur under stress, a first transition region A2 is arranged between the thinned region A1 and the functional region B, and the first transition region A2 can enable a transition region to be arranged between the thinned region A1 and the functional region B by arranging the first thickness region A21 and the second thickness region A22, so that the fracture easily occurs under stress with a larger thickness step difference between the thinned region A1 and the functional region B.

Optionally, the frame 1 in the backlight module 200 shown in this embodiment may be locally thinned when the frame is a coiled material, and only the thinning structure needs to be added in a rolling die, so that the problems that the quality is affected and the like due to burrs possibly generated when the frame 1 is cut in a hollowed-out area in the prior art can be avoided, and stress may be generated in the thinned area a1 in the local thinning process of the frame 1, and further, an annealing process may be adopted to reduce the stress in the thinning process, so as to improve the quality of the backlight module 200.

In some alternative embodiments, shown in fig. 3, 5 and 6, fig. 5 is a further cross-sectional view along M-M 'in fig. 3, and fig. 6 is a further cross-sectional view along M-M' in fig. 3. The backlight module 200 provided in this embodiment includes: the thickness of the first transition region a1 increases in order in the direction in which the thinned region a1 points toward the functional region B.

In the direction pointing to the functional region B along the thinned region a1, the first transition region a2 at least includes a first thickness region a21 and a second thickness region a22, the second thickness region a22 is located on the side of the first thickness region a21 close to the functional region B, and on the basis that the thickness of the a21 of the first thickness region is smaller than that of the second thickness region a22, the thicknesses of the first transition region a1 may be further set to increase in sequence, which is to be understood that the thicknesses of the plurality of first thickness regions a21 and the plurality of second thickness regions a22 increase in sequence.

It can be understood that, along the direction that the thinning region a1 points to the functional region B, the thickness of the first transition region a1 increases in sequence, which can facilitate the process of local thinning when the frame coil is manufactured, and is easy to realize integral molding. The thickness that sets up first transition district A1 increases in proper order simultaneously, can further reduce the segment difference between every region, and first transition district can make the segment difference between attenuate region and the functional area have a transition, avoids the great stress of thickness segment difference between attenuate region and the functional area to take place the fracture easily.

In some alternative embodiments, as shown in fig. 5 and fig. 6, the backlight module 200 provided in this embodiment includes: in the direction Y perpendicular to the functional region, the thinned region a1 includes a first surface 11 and a second surface 12 which are oppositely disposed; in the direction Y perpendicular to the thinned region, the functional region includes a third surface 13 and a fourth surface 14, which are oppositely disposed B; the first surface 11 is adjacent to the third surface 13, and the first surface 11 and the third surface 13 are located on the same horizontal plane; the second surface 12 is adjacent to the fourth surface 14, and a distance L1 between the first surface 11 and the second surface 12 is smaller than a distance L2 between the third surface 13 and the fourth surface 14.

It can be understood that the distance L1 between the first surface 1 and the second surface 2 is smaller than the distance L2 between the third surface 3 and the fourth surface 4, that is, the thickness of the thinned region a1 is smaller than that of the functional region B, that is, by providing a part of the thinned region a1 of the frame 1, the weight and the cost can be effectively reduced. Meanwhile, the thickness of the thinning region A1 is smaller than that of the functional region B, but the thinning region A1 is not a hollow region, and compared with the hollow region in the prior art, the thinning region A1 can effectively prevent the strength of the frame body 1 from being reduced due to the hollow region, and the external foreign matters can be prevented from easily falling into the backlight module 200 to cause white spots and the external water vapor to enter to cause film material folds, so that the grade effect can be influenced.

In some optional embodiments, continuing with fig. 5, the backlight module 200 provided in this embodiment includes: the first transition area a1 includes oppositely disposed first and second transition surfaces 15a and 16 a; the first transition surface 15a is adjacent to and on the same horizontal plane as the first surface 11 and the third surface 13, respectively; the second transition surface 16a is adjacent to the second surface 12 and the fourth surface 14, respectively, and the second transition surface 16a is curved to one side of the first transition surface 15a, and the radius of curvature R of the second transition surface is in the range of 2mm R1000 mm.

It can be understood that, in the backlight module 200 provided in this embodiment, the first transition area a1 may be disposed to include the first transition surface 15a and the second transition surface 16a disposed oppositely, and the second transition surface 16a is curved to one side of the first transition surface 15a, a curvature radius R of the second transition surface is in a range of 2mm ≦ R ≦ 1000mm, when the curvature radius R of the second transition surface is less than 2mm, the second transition surface 16a may be recessed to a greater extent, and the first transition area may not be reached, so that a step difference between the thinned region and the functional region may have a transition, and the stress may be easily broken; when the radius of curvature R of the second transition surface is greater than 1000mm, the area of the first transition area a2 is large, and the thinning area a1 is reduced to connect with the first transition area a2, which is not favorable for thinning effect. Preferably, the radius of curvature R of the second transition surface is 100mm, so that there is a transition in the step difference between the thinned region and the functional region, and fracture easily occurs when the thickness step difference between the thinned region and the functional region is large. The curvature radius R of the second transition surface is only taken as an example, but is not limited specifically, and may be set according to actual conditions, and will not be described in detail below.

In some optional embodiments, continuing with fig. 6, the backlight module 200 provided in this embodiment includes: the first transition area a1 includes oppositely disposed first and second transition surfaces 15b and 16 b; the first transition surface 15b is adjacent to and on the same horizontal plane as the first expression 11 and the third surface 13, respectively; the second transition surface 16B is adjacent to the second surface 12 and the fourth surface 14, respectively, and a first included angle alpha is included between the second transition surface 16B and the second surface 12 along the direction of the thinning area A1 pointing to the functional area B, wherein alpha is more than 0 and less than or equal to 0.4 degrees.

It can be understood that the backlight module 200 provided in this embodiment may be configured such that the first transition region a1 includes the first transition surface 15B and the second transition surface 16B which are oppositely disposed, and in a direction along the thinned region a1 toward the functional region B, the second transition surface 16B and the second surface 12 include a first included angle α, 0 < α ≦ 0.4 °, and since the included angle α between the second transition surface 16B and the second surface 12 is greater than 0.4 °, the second transition surface 16B may be inclined to a greater extent, and the first transition region may not be reached, so that there is a transition between the step difference between the thinned region and the functional region, and the breakage is easily caused by the stress. Therefore, the inclination degree of the second transition surface 16b is controlled within the range of more than 0 and less than or equal to 0.4 degrees, so that the section difference between the thinning area and the functional area has transition, and the fracture easily caused by the large stress of the thickness section difference between the thinning area and the functional area is avoided. The angle α between the second transition surface 16b and the second surface 12 is only taken as an example, but is not specifically limited, and may be set according to an actual situation, and will not be described in detail below.

In some alternative embodiments, shown in conjunction with fig. 3 and 7, fig. 7 is a cross-sectional view taken along line H-H' of fig. 3. The backlight module 200 provided in this embodiment: the device also comprises a shell 2, wherein the shell 2 at least partially surrounds the frame 1; the second surface 12 is positioned between the first surface 11 and the shell 2, and the distance between the second surface 12 and the side of the shell 2 close to the frame 1 is a first distance d 1; the fourth surface 14 is located between the third surface 13 and the casing 2, and the distance between the fourth surface 14 and the side of the casing 2 close to the frame 1 is a second distance d 2; wherein d1 is greater than d 2.

Optionally, the backlight module 200 further includes a reflective layer 3, a light guide layer 4 and a light source 5, which are located on the frame 1, where the light guide layer 4 is used to emit light emitted from the light source 5 out of the light emitting surface C of the backlight module 200, and is used to provide a display light source for the display device; the reflective layer 3 is used for reflecting the light emitted by the light source 5, so that the light can be emitted out of the light emitting surface C of the backlight module 200 through the light guide layer 4, and the utilization rate of the light emitted by the light source 5 is improved.

It can be understood that the backlight module 200 provided in this embodiment further includes a housing 2, the housing 2 at least partially encloses the frame 1, the surfaces of the frame 1 adjacent to the housing 2 are the second surface 12 and the fourth surface 14, a certain gap is provided between the frame 1 and the housing 2, that is, a first distance d1 is provided between the second surface 12 and the side of the housing 2 close to the frame 1 relative to the functional region B of the frame 1, and since the frame 1 has the thinned region a1, a distance between the fourth surface 14 and the side of the housing 2 close to the frame 1 relative to the thinned region a1 is the second distance d2, and d1 > d 2. Because the distance between the position corresponding to the thinning region a1 and the housing 2 is larger, the housing 2 can be prevented from extruding the frame 1 in the subsequent deformation and pressing other devices in the display module 200 to influence the quality of the display module, and therefore, it can be known that the thinning region a1 in the frame 1 in the backlight module 200 provided by this embodiment is arranged in a thinning manner on the lower surface of the frame 1, and this way not only can effectively reduce the weight and reduce the cost, but also can prevent the housing 2 from extruding the frame 1 in the subsequent deformation and pressing other devices in the display module 200 to influence the quality of the display module.

In some alternative embodiments, continuing with fig. 7, the present embodiment provides a backlight module 200: the second surface 12 is positioned between the first surface 11 and the shell 2, and the distance between the second surface 12 and the side of the shell 2 close to the frame 1 is a first distance d 1; the fourth surface 14 is located between the third surface 13 and the casing 2, and the distance between the fourth surface 14 and the side of the casing 2 close to the frame 1 is a second distance d 2; wherein d1 is more than d2, and d1-d2 are more than 0 and less than or equal to 0.03 mm.

It can be understood that, when the difference between the first distance d1 between the second surface 12 and the side of the housing 2 close to the frame 1 and the second distance d2 between the fourth surface 14 and the side of the housing 2 close to the frame 1 is greater than 0.03mm, the second surface 12 of the thinned region a1 is recessed to a greater extent, and the first transition region a2 cannot be reached, so that the step difference between the thinned region a1 and the functional region B is transited, and the fracture is easily caused by stress. Meanwhile, the space between the housing 2 and the frame 1 is too large, which is not favorable for fixing the frame 1 and the housing 2 and affects the quality of the display module 200.

In some alternative embodiments, shown in fig. 3, 8 and 9, fig. 8 is a further sectional view taken along the direction H-H 'in fig. 3, and fig. 9 is a further sectional view taken along the direction H-H' in fig. 3. The display module 200 provided in this embodiment: the device also comprises a shell 2, wherein the shell 2 at least partially surrounds the frame 1; the first surface 11 is located between the second surface 12 and the housing 2, and the third surface 131 is located between the fourth surface 14 and the housing 2; the backlight module 200 further includes a plurality of supporting structures G protruding from the second surface 12.

It can be understood that the surfaces of the frame 1 of the backlight module 200 provided by this embodiment, which are close to the housing 2, are the first surface 11 and the third surface 13, that is, the upper surface of the thinned region a1 of the frame 1 is thinned, which can effectively reduce the weight and the cost. Further, since the upper surface of the thinned region a1 is thinned, that is, a certain gap is formed between the second surface 12 and the reflective layer 3 along a direction perpendicular to the backlight module 200, a phenomenon of film wrinkles inside the backlight module 200 may occur during the reliability test of the backlight module 200. Therefore, the backlight module 200 further comprises a plurality of supporting structures G protruding from the second surface 12, and further, the supporting structures G support the thinning area a1 of the second surface 12 and the reflective layer 3, thereby effectively preventing the film layer from wrinkling.

With reference to fig. 8, fig. 8 only shows that the supporting structure G is independently protruded on the second surface 12 of the frame 1, i.e. the supporting structure G does not need to be manufactured in the same process as the frame 1, which is beneficial to simplify the process of the frame 1. However, the material of the support structure G is not limited in the present invention, and may be set according to the actual situation, and will not be described in detail below. With reference to fig. 9, fig. 9 only shows that the supporting structure G and the frame 1 are manufactured in the same process, i.e., the supporting structure G and the frame 1 are integrally formed, so that the process of the backlight module 200 can be simplified. The structure and shape of the support structure G are not specifically limited, and the support structure G can be set according to actual conditions, and is not described in detail below.

In some alternative embodiments, continuing with fig. 3, 8 and 9, the present embodiment provides a backlight module 200: the thickness of the support structure G in a direction perpendicular to the surface of the frame 1 is equal to the distance between the plane of the second surface 12 and the plane of the fourth surface 14.

It can be understood that, along the direction perpendicular to the surface of the frame 1, the sum of the thickness of the supporting structure G and the thickness of the thinned region a1 is equal to the thickness of the functional region B, and the supporting structure G can be used to support the thinned region a1, so as to prevent a certain gap from being formed between the second surface 12 and the reflective layer 3, which may cause a film wrinkle inside the backlight module 200 during the reliability test of the backlight module 200.

In some alternative embodiments, and with continued reference to fig. 9-12, fig. 10 is a top view of the support structure of fig. 9, fig. 11 is a further top view of the support structure of fig. 9, and fig. 12 is a further top view of the support structure of fig. 9. The backlight module 200 provided in this embodiment: the shape of the orthographic projection of the support structure G on the plane of the first surface 11 is circular, grid or bar.

It can be understood that fig. 10 only illustrates that the shape of the orthographic projection of the support structure G on the plane of the first surface 11 is a circle, fig. 11 only illustrates that the shape of the orthographic projection of the support structure G on the plane of the first surface 11 is a square, and fig. 12 only illustrates that the shape of the orthographic projection of the support structure G on the plane of the first surface 11 is a strip. Optionally, the support structures G are arranged in an array, which is beneficial to simplifying the process. The shape of the orthographic projection of the support structure G on the plane of the first surface 11 is not specifically limited, and the support structure G can be set according to actual conditions, and is not described in detail below.

In some alternative embodiments, continuing with fig. 3, the present embodiment provides a backlight module 200: the functional region B is used for placing an image pickup device or a light emitting device.

It can be understood that, a case functional area B is a functional area B for preventing the camera device, a hollow area needs to be set, and since there is a limitation of the bending height at the hollow position, and then the thickness that cannot be set in the prior art means is thinner, so the functional area B that sets the camera device cannot set the thinning area a1, and if the thinning area a1 is set at the functional area B that sets the camera device, the strength of the bezel becomes weak, which affects the quality of the display module 200. In another case, the functional region B is used for placing the light emitting device, and since the functional region B needs to place the light source in the backlight module 200, the light source needs to be fixed in the functional region B, and thus the normal thickness needs to be maintained. That is, the thinned region a1 needs to be disposed in the first region a of the non-functional region B, which is beneficial to improving the quality of the backlight module 200.

In some alternative embodiments, continuing with fig. 3 and 4, the present embodiment provides a backlight module 200: the thickness of the thinned area A1 is t1, the thicknesses of the functional areas B are t2, and t1 is more than or equal to 0.5t2 and less than or equal to 0.95t 2.

It can be understood that, when the thickness of the thinned region a1 is less than half of the thickness of the functional region B, the difference between the thicknesses of the thinned region a1 and the functional region B is large, and the first transition region a1 cannot make a gradual transition between the step difference between the thinned region a1 and the functional region B, so that the first transition region a1 is easily broken under stress. The thickness of the thinned area A1 is t1, the thickness of the functional area B is equal to t2, t1 is more than or equal to 0.5t2 and is more than or equal to 0.95t2, the thickness of the thinned area A1 is in the range of 0.5t2 to 0.95t2, the first transition area A1 cannot enable the section difference between the thinned area A1 and the functional area B to have a smooth transition, and the quality of the backlight module 200 is improved.

The present invention further provides a display device 300 including the backlight module 200 according to any of the above embodiments of the present invention. Referring to fig. 13, fig. 13 is a schematic view of a display device according to the present invention, and the display device 300 includes the backlight module 200 according to any of the embodiments of the present invention. The embodiment of fig. 13 only takes a mobile phone as an example to describe the display device 300, and it should be understood that the display device 300 provided in the embodiment of the present invention may be other display devices with a display function, such as a computer, a television, a vehicle-mounted display device, and the present invention is not limited thereto. The display device 300 provided in the embodiment of the present invention has the beneficial effects of the backlight module 200 provided in the embodiment of the present invention, and specific reference is specifically made to the detailed description of the display device in the foregoing embodiments, which is not repeated 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:

2. The backlight module according to claim 1, wherein the thickness of the first transition region increases in sequence along the direction from the thinned region to the functional region.

3. The backlight module according to claim 1, wherein the thinned region comprises a first surface and a second surface which are oppositely arranged along a direction perpendicular to the functional region;

in the direction perpendicular to the thinning area, the functional area comprises a third surface and a fourth surface which are oppositely arranged;

the first surface and the third surface are adjacent, and the first surface and the third surface are positioned on the same horizontal plane;

the second surface is adjacent to the fourth surface, and a spacing between the first surface and the second surface is less than a spacing between the third surface and the fourth surface.

4. A backlight module according to claim 2, wherein the first transition region comprises a first transition surface and a second transition surface arranged oppositely;

the first transition surface is respectively adjacent to the first surface and the third surface and is positioned on the same horizontal plane;

the second transition surface is respectively adjacent to the second surface and the fourth surface, the second transition surface is bent towards one side of the first transition surface, and the curvature radius R of the second transition surface is more than or equal to 2mm and less than or equal to 1000 mm.

5. A backlight module according to claim 2, wherein the first transition region comprises a first transition surface and a second transition surface arranged oppositely;

the second transition surface is adjacent to the second surface and the fourth surface respectively, and along the direction of the thinning region pointing to the functional region, a first included angle alpha is included between the second transition surface and the second surface, and alpha is more than 0 and less than or equal to 0.4 degrees.

6. The backlight module according to claim 2, further comprising a housing, the housing enclosing at least a portion of the frame;

the second surface is positioned between the first surface and the shell, and the distance between the second surface and the side, close to the frame body, of the shell is a first distance d 1;

the fourth surface is positioned between the third surface and the shell, and the distance between the fourth surface and the side, close to the frame, of the shell is a second distance d 2;

wherein d1 is greater than d 2.

7. A backlight module according to claim 6, wherein 0 < d1-d2 ≦ 0.03 mm.

8. The backlight module according to claim 2, further comprising a housing, the housing enclosing at least a portion of the frame;

the first surface is located between the second surface and the housing, and the third surface is located between the fourth surface and the housing;

the backlight module further comprises a plurality of supporting structures, and the supporting structures are convexly arranged on the second surface.

9. The backlight module according to claim 8, wherein the thickness of the supporting structure is equal to a distance between a plane of the second surface and a plane of the fourth surface along a direction perpendicular to the surface of the frame body.

10. The backlight module according to claim 8, wherein the shape of the orthographic projection of the supporting structure on the plane of the first surface is circular, grid or strip.

11. A backlight module according to claim 1, wherein the functional regions are used for placing an image pickup device or a light emitting device.

12. A backlight module according to claim 1, wherein the thinned regions have a thickness t1, and the functional regions have equal thicknesses t2, 0.5t2 ≦ t1 ≦ 0.95t 2.

13. A display device comprising a backlight module according to any one of claims 1-12.