CN216351668U

CN216351668U - Backlight module, display device and electronic equipment

Info

Publication number: CN216351668U
Application number: CN202122510519.2U
Authority: CN
Inventors: 陈腊春; 孙海云
Original assignee: Huizhou Shiwei New Technology Co Ltd
Current assignee: Huizhou Shiwei New Technology Co Ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-19
Anticipated expiration: 2031-10-18

Abstract

The application provides a backlight unit, display device and electronic equipment, backlight unit includes: the back plate is provided with a limiting hole, and the edge of the limiting hole is provided with a flanging protruding out of the inner surface of the back plate; the support piece comprises a support piece and a base, the base is arranged on the inner surface of the back plate, and the support piece is arranged on one surface of the base, which is back to the back plate; the reflector plate is provided with a positioning hole and a cutting seam, the supporting sheet penetrates through the cutting seam, the parts of the reflector plate, which are positioned on the two sides of the supporting sheet, are respectively abutted against the supporting sheet, and the turnup penetrates through the positioning hole to limit the reflector plate. In the backlight unit that this application provided, wear to locate the locating hole on the reflector plate and spacing reflector plate through the turn-ups with spacing hole on the backplate, through set up the joint-cutting on the reflector plate in order to dodge support piece's backing sheet, the reflector plate is located the part of backing sheet both sides all with the backing sheet butt to make the reflector plate cover support piece's base completely, thereby avoid light to spill and form the dark space on the reflector plate from the position that is used for dodging the backing sheet on the reflector plate.

Description

Backlight module, display device and electronic equipment

Technical Field

The application belongs to the technical field of liquid crystal display, and particularly relates to a backlight module, a display device and electronic equipment.

Background

The lcd is used as a communication interface between a user and information, and has superior characteristics of high space utilization, low electromagnetic interference, no radiation, and the like, so that the lcd becomes a mainstream display mode at present, and is widely used in information communication tools such as televisions, smart phones, tablet computers, and the like. The liquid crystal module of the liquid crystal display does not emit light, but the backlight module provides light for the liquid crystal module. The backlight module of the lcd mainly includes a direct type backlight module and a side type backlight module, wherein the direct type backlight module is widely used in the industry due to its superior cost advantage and is gradually becoming the mainstream structure of the lcd.

In the direct-type backlight module, in order to make the light emitted from the backlight source uniformly reach the liquid crystal module, a diffusion sheet is usually disposed above the light source of the backlight module, and a support sheet is required to be disposed on the back plate of the backlight module to support the diffusion sheet. In order to facilitate the assembly, the reflecting plate of the backlight module needs to be provided with holes to avoid the supporting plate protruding out of the back plate. However, the open holes on the reflective sheet form a dark area, which results in a dark area in the whole screen of the lcd, thereby affecting the visual effect of the lcd.

Therefore, a new backlight module is needed to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a backlight module, a display device and electronic equipment, and aims to solve the problem that dark areas are formed in the opening part of an avoiding support sheet on a reflector of the backlight module.

The embodiment of the application provides a backlight unit, its characterized in that includes:

the back plate is provided with a limiting hole, and the edge of the limiting hole is provided with a flange protruding out of the inner surface of the back plate;

the support piece comprises a support piece and a base, the base is arranged on the inner surface of the back plate, and the support piece is arranged on one surface of the base, which faces away from the back plate; and

the reflecting sheet is provided with a positioning hole and a cutting seam, the supporting sheet penetrates through the cutting seam, the parts of the reflecting sheet, which are positioned on the two sides of the supporting sheet, are respectively abutted against the supporting sheet, and the flanging penetrates through the positioning hole to limit the reflecting sheet.

Optionally, the cutting slit includes a first section, a second section and a third section communicated between the first section and the second section, the extending direction of the third section is different from the extending direction of the second section and the extending direction of the first section, and the supporting sheet is inserted into the third section;

the parts of the reflector plate, which are positioned on two sides of the first section, are abutted with each other, the parts of the reflector plate, which are positioned on two sides of the second section, are abutted with the support sheet, and the parts of the reflector plate, which are positioned on two sides of the third section, are abutted with the support sheet respectively, so that the base is covered.

Optionally, the first section and the second section are arranged oppositely, the third section is arranged perpendicular to the second section and the first section, and the first section and the second section are symmetrically arranged with respect to the third section.

Optionally, the backlight module includes a lamp panel, and a plurality of lamp beads spaced from each other are disposed on the lamp panel;

the lamp plate set up in the backplate internal surface, seted up on the lamp plate and dodged the hole to dodge the base.

Optionally, the reflector plate set up in the lamp plate dorsad the one side of backplate, a plurality of light trap have been seted up on the reflector plate, one the light trap is with one the lamp pearl sets up relatively, the lamp pearl passes the light trap protrusion in the reflector plate dorsad the one side of lamp plate.

Optionally, the lamp panel is provided with alignment holes, the alignment holes and the positioning holes are arranged oppositely, the turnup penetrates through the alignment holes and the positioning holes, threads are arranged on the inner surface of the turnup, and screws penetrate through the turnup and are used for fixing the lamp panel and the reflector plate on the back plate.

Optionally, a positioning boss is arranged on the inner surface of the back plate, a positioning groove is arranged at the edge of the base, and the positioning groove is embedded with the positioning boss.

Optionally, the backlight module further includes a diffusion sheet, and the support sheet is perpendicular to the base and is used for supporting the diffusion sheet.

The embodiment of the application further provides a display device, which is characterized by comprising a liquid crystal module and a backlight module arranged on the back surface of the liquid crystal module, wherein the backlight module is any one of the backlight modules, and the backlight module is used for providing a light source for the liquid crystal module.

An embodiment of the present application further provides an electronic device, which is characterized by comprising a housing and a display device disposed on the housing, where the display device is the display device described above.

In the backlight module provided by the embodiment of the application, the back plate is provided with the limiting hole, the edge of the limiting hole is provided with the flanging protruding out of the inner surface of the back plate, and the flanging is arranged in the positioning hole in the reflector plate in a penetrating manner so as to limit the reflector plate on the back plate; the base of the supporting piece is arranged on the inner surface of the back plate, the supporting sheet of the supporting piece is arranged on one surface of the base, which faces away from the back plate, a cutting slot for avoiding the supporting sheet is formed in the reflecting sheet, the supporting sheet penetrates through the cutting slot, and the parts, which are positioned on the two sides of the supporting sheet, of the reflecting sheet are respectively abutted against the supporting sheet, so that the base is completely covered by the reflecting sheet, light is prevented from leaking from the parts, which are used for avoiding the supporting sheet, on the reflecting sheet, and a dark area is formed on the reflecting sheet, and further the visual effect of the liquid crystal display device is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. In the following description, like reference numerals denote like parts. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a sectional view of the display device in the electronic apparatus shown in fig. 1, taken along a thickness direction thereof.

Fig. 3 is a cross-sectional view of the backlight module in the display device shown in fig. 2 along the thickness direction thereof.

Fig. 4 is a schematic structural diagram of a supporting member in the backlight module shown in fig. 3.

Fig. 5 is a partial schematic view of the backlight module shown in fig. 3, in which a supporting member is disposed on the back plate.

Fig. 6 is a schematic structural view of the front surface of the lamp panel in the backlight module shown in fig. 3.

Fig. 7 is a schematic structural view of the back surface of the lamp panel in the backlight module shown in fig. 3.

Fig. 8 is a schematic structural view of the front surfaces of the lamp panel and the reflector plate in the backlight module shown in fig. 3.

Fig. 9 is a schematic structural view of the lamp panel and the back surface of the reflector plate in the backlight module shown in fig. 3.

FIG. 10 is a partial cross-sectional view of the backlight module shown in FIG. 3.

Fig. 11 is a schematic view of a slit structure of a reflector in the backlight module shown in fig. 10.

Fig. 12 is another partial cross-sectional view of the backlight module shown in fig. 3.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the described embodiments are merely exemplary of some, and not all, of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a backlight module, a display device and electronic equipment, and aims to solve the problem that dark areas are formed in the opening part of an avoiding support sheet on a reflector of the backlight module. The following description will be made with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, and fig. 2 is a cross-sectional view of a display device in the electronic device shown in fig. 1 along a thickness direction thereof. The electronic device can be any product or component with a display function, such as a mobile phone, a navigator, electronic paper, a television, a digital photo frame, a tablet computer, and a notebook computer. The electronic apparatus 0 may include a housing 1 and a display device 2. The display device 2 may be a liquid crystal display device such as a liquid crystal display panel, a liquid crystal display, or a liquid crystal display panel. The display device 2 is mounted on the casing 1 to realize a display function of the electronic apparatus 0. In some embodiments, the display device 2 is also used to implement the touch function of the electronic device 0. For example, when the electronic device 0 is a mobile terminal such as a smart phone or a tablet computer, the display device 2 is used for both displaying and touch-controlling.

It should be noted that the structure of the electronic device 0 in the embodiment of the present application is not limited to this, and the electronic device 0 may further include components (not shown in the figures) such as a cover plate, a main board, a battery, a camera module, a speaker, a sensor, and the like. For the descriptions of the cover plate, the main board, the battery, the camera module, the speaker, the sensor, and other elements, reference may be made to the description of the above elements in the related art, and further description is omitted here.

The housing 1 may form an outer contour of the electronic device 0. Meanwhile, the case 1 may serve as a protective case for various internal elements of the electronic apparatus 0, preventing the various internal elements of the electronic apparatus 0 from being damaged due to collision, falling, and the like of the electronic apparatus 0. The housing 1 may be integrally formed. In the forming process of the shell 1, structures such as a microphone hole, a loudspeaker hole, a receiver hole, an earphone hole, a USB interface hole, a rear camera hole, a fingerprint identification module mounting hole and the like can be formed on the shell 1.

The housing 1 may be a metal housing, such as a metal of magnesium alloy, stainless steel, etc. It should be noted that the material of the housing 1 in the embodiment of the present application is not limited to this, and other materials may be used. Such as: casing 1 can be the plastic casing, and casing 1 also can be ceramic housing, and casing 1 can also include plastic part and metal part simultaneously, and casing 1 can be the shell structure of metal and plastic mutually supporting. Specifically, the metal part may be formed first, for example, by casting to form a magnesium alloy substrate, and then molding the plastic on the magnesium alloy substrate to form a plastic substrate, so as to form the complete housing structure. It should be noted that the material and process of the housing 1 are not limited to this, and a glass housing may also be used, and the specific material and the specific manufacturing process of the housing 1 are not limited in the embodiments of the present application.

The display device 2 may form an interactive interface of the electronic apparatus 0. The display device 2 includes a liquid crystal module 21 and a backlight module 22. The liquid crystal module 21 and the backlight module 22 are stacked, the backlight module 22 is disposed on the back of the liquid crystal module 21, the backlight module 22 emits light to the liquid crystal module 21, and the liquid crystal module 21 regulates the light to achieve the character and image display function of the display device 2.

Referring to fig. 3, fig. 3 is a cross-sectional view of the backlight module of the display device shown in fig. 2 along a thickness direction thereof. The backlight assembly 22 may include a back panel 221, a supporter 222, a lamp panel 223, and a reflector sheet 224. Wherein, backplate 221, support piece 222, lamp plate 223 and reflector plate 224 range upon range of setting, and reflector plate 224, lamp plate 223 and support piece 222 all set up in the inboard of backplate 221.

The back plate 221 may be a back cover of the electronic device 0, and the back plate 221 may also be a plate disposed in the electronic device 0 and close to the back cover of the electronic device 0, where the back plate 221 is used to carry other components in the backlight module 22. The outer side of the back plate 221 is a side close to the back surface of the electronic device 0, the inner side of the back plate 221 is a side close to the front surface of the electronic device 0, the outer surface of the back plate 221 is a surface of the back plate 221 facing the back surface of the electronic device 0, and the inner surface of the back plate 221 is a surface of the back plate 221 facing the front surface of the electronic device 0. The front surface of the electronic device 0 is a display surface of the electronic device 0, and the back surface of the electronic device 0 is a non-display surface of the electronic device 0 opposite to the display surface.

The supporting member 222 is disposed inside the back plate 221 and is used for supporting the optical film located on the upper layer of the back plate 221 in the backlight module 22. Specifically, the supporting member 222 may be fixedly disposed on the inner surface of the back plate 221. Referring to fig. 3, 4 and 5, fig. 4 is a schematic structural view of a supporting member in the backlight module shown in fig. 3, and fig. 5 is a partial schematic view of a supporting member disposed on a back plate in the backlight module shown in fig. 3.

The support 222 may include a base 2221 and a support piece 2222 fixedly connected. The base 2221 is disposed on the inner surface of the back plate 221, and the supporting piece 2222 is disposed on a surface of the base 2221 opposite to the back plate 221. Specifically, the method comprises the following steps: the base 2221 may be disposed on the back plate 221 by means of glue bonding, for example, a back glue may be coated on a side of the base 2221 facing the back plate 221 and the base 2221 is bonded to the inner surface of the back plate 221; the base 2221 may also be disposed on the back plate 221 by screwing screws, for example, screw holes may be opened at two ends of the base 2221 in the length direction, and the base 2221 may be screwed to the inner surface of the back plate 221 by screws; the base 2221 may also be disposed on the back plate 221 by a snap-fit connection or a combination of two or more connection methods. The embodiment of the present application does not limit the specific manner in which the base 2221 is disposed on the back plate 221.

In some embodiments, the base 2221 of the support member 222 is disposed perpendicular to the supporting piece 2222, that is, the supporting piece 2222 is disposed perpendicularly on a side of the base 2221 facing away from the back plate 221. In some embodiments, the base 2221 of the support member 222 and the supporting piece 2222 are disposed obliquely, that is, the supporting piece 2222 is disposed obliquely on a surface of the base 2221 facing away from the back plate 221. It can be understood that, compared to the way that the support sheet 2222 is obliquely disposed on the side of the base 2221 facing away from the back plate 221, the support sheet 2222 is vertically disposed on the side of the base 2221 facing away from the back plate 221, so that the structure of the support member 222 is more stable and the support effect is better. In the embodiment of the present disclosure, the base 2221 of the support member 222 and the supporting piece 2222 are vertically disposed, that is, the supporting piece 2222 is vertically disposed on a surface of the base 2221 opposite to the back plate 221, as an example, the structure of the support member 222 is described, but the specific position relationship between the base 2221 and the supporting piece 2222 of the support member 222 is not limited in the embodiment of the present disclosure.

In some embodiments, each base 2221 is provided with a positioning groove 2223 at both end edges in the length direction thereof, and the inner surface of the back plate 221 is provided with a plurality of positioning bosses 2211 spaced apart from each other. When the support 222 is mounted on the back panel 221, a back adhesive is first applied to a surface of the base 2221 facing the back panel 221, then the two positioning grooves 2223 on the base 2221 are respectively aligned with the two adjacent positioning bosses 2211 on the back panel 221, and finally the base 2221 is adhered to the back panel 221 so that one positioning boss 2211 is embedded in one positioning groove 2223. Through the matching of the positioning grooves 2223 arranged on the base 2221 and the positioning bosses 2211 arranged on the back plate 221, the base 2221 can be quickly positioned when the support 222 is mounted on the back plate 221, so that the mounting efficiency of the support 222 is improved.

It is understood that, in order to achieve a better supporting effect, the number of the supporting members 222 may be multiple, and a plurality of the supporting members 222 may be disposed on the back plate 221 at intervals. In some embodiments, a plurality of supports 222 are randomly spaced on the back plate 221; in other embodiments, a plurality of supporting members 222 are spaced on the back plate 221 in an array. The specific number and arrangement of the supporting members 222 are not limited in the embodiments of the present application.

The lamp panel 223 is disposed inside the back panel 221 and is used for providing a light source for the backlight module 22. Specifically, the lamp panel 223 may be attached to an inner surface of the back panel 221. Referring to fig. 3, 6 and 7, fig. 6 is a schematic structural diagram of a front surface of a lamp panel in the backlight module shown in fig. 3, and fig. 7 is a schematic structural diagram of a back surface of the lamp panel in the backlight module shown in fig. 3.

One surface of the lamp panel 223 facing the back panel 221 (the back surface of the lamp panel 223) is coated with a back adhesive, so that the lamp panel 223 is attached to the inner surface of the back panel 221 in an adhesive manner. The one side of lamp plate 223 towards backplate 221 can all coat the gum, and the one side of lamp plate 223 towards backplate 221 also can only partly coat the gum, for example at the back of lamp plate 223 to positions such as the edge or four sides edge coating gum.

One side of the lamp panel 223 (the front side of the lamp panel 223) opposite to the back panel 221 is provided with a plurality of lamp beads 2231 spaced from each other, and the lamp beads 2231 can emit light for providing a light source for the backlight module 22. The light beads 2231 may be Light Emitting Diodes (LEDs) or other materials, and the plurality of light beads 2231 may be disposed on the lamp panel 223 at intervals in an array or randomly on the lamp panel 223 at intervals. The embodiment of the application does not limit the concrete material of the lamp beads 2231 and the concrete arrangement mode on the lamp panel 223.

It should be noted that, because the inner surface of the back panel 221 is provided with the plurality of supporting members 222, an avoiding structure needs to be provided on the lamp panel 223 to avoid the supporting members 222. Specifically, the lamp panel 223 is provided with an avoiding hole 2232 at a position opposite to the base 2221 of the support member 222 so as to avoid the base 2221 of the support member 222. The shape of the avoiding hole 2232 may be the same as that of the base 2221, and the shape of the avoiding hole 2232 may also be different from that of the base 2221. The embodiment of the present application does not limit the specific shape of the avoiding hole 2232, but the size of the avoiding hole 2232 should be larger than the size of the base 2221, so that the avoiding hole 2232 can completely avoid the base 2221.

The reflective sheet 224 is disposed inside the back plate 221 for reflecting light emitted from the light source of the backlight module 22 to the liquid crystal module 21. Specifically, the reflective sheet 224 may be attached to a surface of the lamp panel 223 opposite to the back panel 221. Referring to fig. 3, 8 and 9, fig. 8 is a schematic structural diagram of the front surfaces of a lamp panel and a reflector plate in the backlight module shown in fig. 3, and fig. 9 is a schematic structural diagram of the back surfaces of the lamp panel and the reflector plate in the backlight module shown in fig. 3.

It should be noted that the lamp beads 2231 on the lamp panel 223 are point light sources, light emitted by the point light sources can be spread around in a spherical shape with the light sources as the center of the sphere, and only the light spread to the liquid crystal module 21 can be utilized by the liquid crystal module 21. Therefore, the backlight module 22 needs to be provided with a reflective sheet 224 to reflect the light that originally travels toward the back panel 221 located at the bottom layer of the display device 2, so that the light travels toward the liquid crystal module 21 located at the top layer of the display device 2.

Because lamp pearl 2231 on lamp plate 223 sets up on the one side that lamp plate 223 dorsad backplate 221, and lamp pearl 2231 has the height, so lamp pearl 2231 can protrusion in the one side that lamp plate 223 dorsad backplate 221. Meanwhile, the reflector plate 224 is attached to the surface of the lamp panel 223 opposite to the back panel 221, and therefore, the reflector plate 224 needs to be provided with the light holes 2241 to avoid the lamp beads 2231, and the lamp beads 2231 penetrate through the light holes 2241 and protrude from the surface of the reflector plate 224 opposite to the lamp panel 223. The light holes 2241 may be round holes, and the light holes 2241 may also be square holes. The embodiment of the application does not limit the specific shape of the light holes 2241, but the size of the light holes 2241 is larger than that of the lamp beads 2231, so that the light holes 2241 can completely avoid the lamp beads 2231.

Similarly, the support piece 222, the lamp panel 223 and the reflector sheet 224 are all located on the inner side of the back panel 221, although the lamp panel 223 is provided with an avoiding hole 2232 capable of avoiding the base 2221 of the support piece 222, the support piece 2222 of the support piece 222 still protrudes out of the surface of the lamp panel 223 opposite to the back panel 221, and the support piece 2222 of the support piece 222 jacks up the reflector sheet 224, so that the reflector sheet 224 is deformed. Therefore, the reflector 224 must be provided with an opening avoiding the support sheet 2222. However, the opening part of the reflector sheet 224 cannot reflect light, and a part of light emitted by the lamp beads 2231 of the lamp panel 223 can leak through the opening on the reflector sheet 224, so that a dark area is formed at the opening part of the reflector sheet 224, and a dark area is formed at a position corresponding to the opening part of the reflector sheet 224 on the display device 2, which affects the visual effect of the display device 2.

Referring to fig. 6 to 10, fig. 10 is a partial cross-sectional view of the backlight module shown in fig. 3. The reflection sheet 224 is provided with a slit 2242, and the slit 2242 is used for avoiding the support sheet 2222 of the support member 222. Specifically, the supporting piece 2222 protrudes from a surface of the lamp panel 223 opposite to the back panel 221, and penetrates through the slit 2242. It should be noted that, because the back panel 221 is provided with a plurality of supporting pieces 222 spaced from each other, the reflecting sheet 224 is also provided with a plurality of slits 2242 spaced from each other, and one slit 2242 is disposed opposite to one supporting piece 2222, so that the supporting piece 2222 of each supporting piece 222 is respectively inserted into one slit 2242 of the reflecting sheet 224, thereby preventing the supporting piece 2222 of the supporting piece 222 from jacking up the reflecting sheet 224 to deform the reflecting sheet 224. It should be noted that portions of the reflection sheet 224 located at two sides of the supporting sheet 2222 of the supporting member 222 are respectively abutted against the supporting sheet 2222, so that the slits 2242 of the reflection sheet 224 are completely filled with the supporting sheet 2222 of the supporting member 222 without any gap, thereby preventing a part of light emitted by the light source of the backlight module 22 from leaking through the slits 2242 of the reflection sheet 224 and forming a dark region at the slit 2242 portion of the reflection sheet 224.

Referring to fig. 10 and 11 together, fig. 11 is a schematic view illustrating a slit structure of a reflector in the backlight module shown in fig. 10. The slits 2242 may include a first section 2242a, a second section 2242b, and a third section 2242 c. The extending direction of the third section 2242c is different from the extending direction of the second section 2242b and the extending direction of the first section 2242 a. First section 2242a and second section 2242b are disposed opposite to each other and parallel to each other, and third section 2242c communicates between second section 2242b and first section 2242 a. In some embodiments, the third segment 2242c may be disposed perpendicular to the second segment 2242b and the first segment 2242a, and the first segment 2242a and the second segment 2242b are symmetrically disposed with respect to the third segment 2242c, so that the slit 2242 has an "I" shape or an "I" shape as a whole. In other embodiments, the third segment 2242c may also be disposed obliquely to the second segment 2242b and the first segment 2242a, so that the slit 2242 has a zigzag shape as a whole. The embodiment of the present application does not limit the specific shape of the slit 2242.

The width of the third section 2242c may be greater than the width of the second section 2242b and the width of the first section 2242a, and the support piece 2222 of the support member 222 is inserted into the third section 2242 c. The portions of the reflector sheet 224 located at the two sides of the third segment 2242c are abutted to the support sheet 2222, the portions located at the two sides of the second segment 2242b are abutted to each other, and the portions located at the two sides of the first segment 2242a are abutted to each other, so that the reflector sheet 224 completely covers the base 2221 of the support member 222, and therefore, light emitted by the lamp beads 2231 on the lamp panel 223 is prevented from leaking from the slits 2242 of the reflector sheet 224 and forming dark regions at the slits 2242 of the reflector sheet 224.

Referring to fig. 3 to 12, fig. 12 is another partial cross-sectional view of the backlight module shown in fig. 3. The back plate 221 is provided with a limiting hole 2212, the edge of the limiting hole 2212 is provided with a flange 2213 facing the inner side of the back plate 221, and the flange 2213 protrudes out of the inner surface of the back plate 221. The lamp panel 223 is provided with the alignment hole 2233, the reflector plate 224 is provided with the positioning hole 2243, the alignment hole 2233 on the lamp panel 223 and the positioning hole 2243 on the reflector plate 224 are arranged oppositely, and the alignment hole 2233 and the positioning hole 2243 are simultaneously sleeved on the turned-over edge 2213 of the limiting hole 2212 (namely, the turned-over edge 2213 of the limiting hole 2212 is simultaneously penetrated through the alignment hole 2233 and the positioning hole 2243) so as to limit the lamp panel 223 and the reflector plate 224.

In addition, the inner surface of the flange 2213 is provided with threads, a screw 226 penetrates through the flange 2213, and the screw 226 is screwed with the flange 2213 so as to fix the lamp panel 223 and the reflector 224 on the back panel 221.

Please continue to refer to fig. 3. The backlight assembly 22 may further include a diffusion sheet 225. The diffusion sheet 225 is disposed inside the back plate 221 for diffusing the light emitted from the light source of the backlight module 22. Specifically, the diffusion sheet 225 may be disposed on a side of the reflection sheet 224 opposite to the lamp panel 223, and the diffusion sheet 225 may be supported by the support 222. It should be noted that, because the lamp beads 2231 on the lamp panel 223 are arranged at intervals, the diffusion sheet 225 needs to be arranged to diffuse the light before the light reaches the liquid crystal module 21 of the display device 2, so that the area corresponding to the portion of the lamp panel 223 where no lamp beads 2231 are arranged can be uniformly illuminated.

The present application will be described below from the perspective of assembling the backlight module 22.

Firstly, coating a back adhesive on one side of the base 2221 of the support piece 222, which faces away from the support piece 2222, aligning the positioning groove 2223 on the base 2221 with the positioning boss 2211 on the back plate 221, and adhering the support piece 222 coated with the back adhesive to the inner surface of the back plate 221;

then, aligning the light holes 2241 on the reflector 224 with the lamp beads 2231 on the lamp panel 223, and attaching the reflector 224 to the surface of the lamp panel 223 where the lamp beads 2231 are arranged;

then, a back adhesive is coated on the edge or the whole surface of the lamp panel 223 opposite to the reflector sheet 224, the alignment hole 2233 on the lamp panel 223 is aligned with the limit hole 2212 on the back panel 221, the lamp panel 223 coated with the back adhesive and the reflector sheet 224 are adhered to the inner surface of the back panel 221, the flange 2213 of the limit hole 2212 is simultaneously penetrated through the alignment hole 2233 on the lamp panel 223 and the positioning hole 2243 on the reflector sheet 224, and the supporting sheet 2222 of the supporting member 222 is penetrated through the cutting slot 2242 on the reflector sheet 224.

Finally, a screw 226 is screwed into the flange 2213 to fix the lamp panel 223 and the reflector 224.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The backlight module, the display device and the electronic device provided by the embodiment of the present application are introduced in detail, a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the embodiment is only used to help understanding the method and the core idea of the present application; for those skilled in the art, based on the idea of the present application, the embodiments and the application scope may be changed, and in summary, the content of the present specification should not be construed as limiting the present application.

Claims

1. A backlight module, comprising:

2. The backlight module according to claim 1,

the joint comprises a first section, a second section and a third section communicated between the first section and the second section, the extending direction of the third section is different from the extending direction of the second section and the first section, and the supporting sheet penetrates through the third section;

3. The backlight module according to claim 2,

the first section and the second section are arranged oppositely, the third section is perpendicular to the second section and the first section, and the first section and the second section are symmetrically arranged relative to the third section.

4. The backlight module according to any of claims 1 to 3,

the backlight module also comprises a lamp panel, and a plurality of lamp beads which are mutually spaced are arranged on the lamp panel;

5. The backlight module according to claim 4,

the reflector plate set up in the lamp plate dorsad the one side of backplate, a plurality of light trap have been seted up on the reflector plate, one the light trap is with one the lamp pearl sets up relatively, the lamp pearl passes the light trap protrusion in the reflector plate dorsad the one side of lamp plate.

6. The backlight module according to claim 4,

the lamp plate is provided with alignment holes, the alignment holes and the positioning holes are arranged oppositely, the turnup penetrates through the alignment holes and the positioning holes, threads are arranged on the inner surface of the turnup, screws penetrate through the turnup, and the screws are used for fixing the lamp plate and the reflector plate on the back plate.

7. The backlight module according to any of claims 1 to 3,

the inner surface of the back plate is provided with a positioning boss, the edge of the base is provided with a positioning groove, and the positioning groove is embedded with the positioning boss.

8. The backlight module according to any of claims 1 to 3,

the backlight module also comprises a diffusion sheet, and the support sheet is perpendicular to the base and used for supporting the diffusion sheet.

9. A display device, comprising a liquid crystal module and a backlight module disposed on a back surface of the liquid crystal module, wherein the backlight module is as claimed in any one of claims 1 to 8, and the backlight module is used for providing a light source for the liquid crystal module.

10. An electronic apparatus comprising a housing and a display device provided in the housing, wherein the display device is the display device according to claim 9.