CN110570766B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN110570766B CN110570766B CN201910842380.6A CN201910842380A CN110570766B CN 110570766 B CN110570766 B CN 110570766B CN 201910842380 A CN201910842380 A CN 201910842380A CN 110570766 B CN110570766 B CN 110570766B
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- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 239000012788 optical film Substances 0.000 claims description 80
- 239000002184 metal Substances 0.000 claims description 65
- 229910052751 metal Inorganic materials 0.000 claims description 65
- 239000002923 metal particle Substances 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 8
- 239000002390 adhesive tape Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000004308 accommodation Effects 0.000 abstract description 5
- 238000004026 adhesive bonding Methods 0.000 abstract description 5
- 239000003292 glue Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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Abstract
The embodiment of the application provides a backlight unit and display device, backlight unit include the bottom plate and glue the frame, and the bottom plate forms accommodation space with gluing the frame, and the optics diaphragm is located one side that accommodation space kept away from the bottom plate, and the optics diaphragm is connected through magnetic structure with gluing the frame. From this, adopt magnetic structure to fix the optics diaphragm on gluing the frame for backlight unit's inner structure is firm, and the light that the pointolite sent can carry out even mixed light before getting into the optics diaphragm, passes and changes into even white light behind the optics diaphragm, and the stable performance. When the optical diaphragm is maintained and replaced, the optical diaphragm can be taken down from the backlight module only by overcoming the magnetic force of the magnetic structure, and after the maintenance and replacement are completed, the optical diaphragm and the rubber frame are automatically fixed through the magnetic force of the magnetic structure, so that the optical diaphragm is convenient and fast.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of display, in particular to a backlight module and a display device.
[ background of the invention ]
The display panel is divided into an active light-emitting display panel and a passive light-emitting display panel, and the passive light-emitting display panel realizes light emission through the backlight module.
In order to convert light emitted from a point light source in a backlight module into uniform white light, an optical film such as a diffusion sheet is disposed in the backlight module. After entering the diffusion sheet, the light emitted by the point light source can be refracted, scattered, reflected and the like in the diffusion sheet, so that the light emitted by the point light source becomes uniform, and is converted into uniform white light after being processed by the multilayer optical film.
In prior art, adopt the fixed mode of sticky tape to fix the optics diaphragm in the backlight unit, the viscidity of sticky tape receives the temperature to influence great on the one hand, when the viscidity of sticky tape is not enough, the removal probably appears in the position of optics diaphragm, backlight unit's inner structure is insecure, the performance goes wrong, on the other hand is maintaining the optics diaphragm, when changing, need clear away original sticky tape earlier, just can take off the optics diaphragm from backlight unit, accomplish the maintenance, after the change, need use new sticky tape to fix the optics diaphragm, the dismouting is inconvenient.
[ summary of the invention ]
In view of this, the embodiment of the present application provides a backlight module and a display device, where an optical film is connected to a rubber frame through a magnetic structure, and the magnetic force of the magnetic structure is less affected by temperature changes, so that the internal structure of the backlight module is firm and the performance of the backlight module is stable. When the optical diaphragm is maintained and replaced, the optical diaphragm can be taken down from the backlight module only by overcoming the magnetic force of the magnetic structure, and after the maintenance and replacement are completed, the optical diaphragm and the rubber frame are automatically fixed through the magnetic force of the magnetic structure, so that the optical diaphragm is convenient and fast.
In one aspect, embodiments of the present application provide a backlight module, including,
a base plate;
a rubber frame;
the bottom plate and the rubber frame form an accommodating space;
the optical film is positioned on one side of the accommodating space far away from the bottom plate;
the optical diaphragm and the rubber frame are connected through a magnetic structure.
In another aspect, an embodiment of the present application provides a display device, which includes the above display panel.
The embodiment of the application provides a pair of backlight unit and display device, backlight unit include the bottom plate and glue the frame, and the bottom plate forms accommodation space with gluing the frame and places the lamp plate, and the optics diaphragm is located one side that accommodation space kept away from the bottom plate, also is exactly the light-emitting side of lamp plate, and the light that the pointolite on the lamp plate sent passes behind the optics diaphragm and changes into even white light for display panel can give out light passively. The optical diaphragm is connected through the magnetic structure with gluing the frame, and the magnetic force that the magnetic structure produced is influenced by the temperature less on the one hand for backlight unit's inner structure is firm, and the position of optical diaphragm in backlight unit is fixed, and the light that the pointolite sent can carry out even mixed light before getting into the optical diaphragm, changes into even white light after passing the optical diaphragm, stable performance. On the other hand, when the optical diaphragm is maintained and replaced, the optical diaphragm is taken down from the backlight module by overcoming the magnetic force of the magnetic structure, and after the maintenance and replacement are completed, the optical diaphragm and the rubber frame are automatically fixed by the magnetic force of the magnetic structure, so that the optical diaphragm is convenient and quick.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure;
FIG. 2 is a top view of the backlight module shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the dotted line A-A' in FIG. 2;
FIG. 4 is another schematic cross-sectional view taken along the dashed line A-A' in FIG. 2;
FIG. 5 is a further schematic cross-sectional view taken along dashed line A-A' of FIG. 2;
FIG. 6 is an enlarged view of the area M1 in FIG. 3;
FIG. 7 is a top view corresponding to FIG. 6;
FIG. 8 is another enlarged schematic view of the area M1 in FIG. 3;
FIG. 9 is a further enlarged schematic view of the area M1 of FIG. 3;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 11 is a schematic cross-sectional view of the display device in fig. 10.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. 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 terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the description herein, it is to be understood that the terms "substantially", "approximately", "about", "substantially", and the like, as used in the claims and the examples herein, are intended to be generally accepted as not being precise, within the scope of reasonable process operation or tolerance.
It should be understood that although the terms first, second, third, etc. may be used to describe the display regions in the embodiments of the present application, the display regions should not be limited to these terms. These terms are only used to distinguish the display areas from each other. For example, the first display region may also be referred to as a second display region, and similarly, the second display region may also be referred to as a first display region without departing from the scope of the embodiments of the present application.
In order to more clearly describe the backlight module provided in the embodiments of the present application, a structure of the backlight module is described below.
In the passive display panel, the display panel does not emit light, and the display panel processes uniform white light passing through the display panel through its own structure, so that the display panel can display a picture.
Specifically, a backlight module is arranged on one side of the display panel, which is far away from the light emitting side, and the backlight module provides uniform white light for the display panel, light sources in the backlight module can be cold cathode tube fluorescent lamps, light emitting diodes, electroluminescent bodies and the like, but the light emitted by the light sources is not uniform white light, so that the light emitted by the light sources needs to be optically processed and converted into the required uniform white light.
The internal structure of the backlight module is described in detail below, and the backlight module can be classified into a side-in type and a direct-down type according to the position of the light source in the backlight module.
The bottom of the side-in type backlight module is provided with a light guide plate, the light source is positioned on the side part of the light guide plate, light emitted by the light source enters the light guide plate from the side and is absorbed, the light is diffused through mesh points in the light guide plate, and the light is emitted out of the light guide plate along the light-emitting side direction of the backlight module and is converted into uniform white light through the optical film.
The bottom of the direct type backlight module is provided with a light plate, a plurality of light sources are distributed on the light plate, an optical diaphragm is arranged above the light sources, and light emitted by the light sources enters the optical diaphragm after being uniformly mixed and is converted into uniform white light.
As can be seen from the above description, in order to make the backlight module emit uniform white light, the optical film in the backlight module needs to perform a predetermined optical processing on the light emitted from the light source, and the effect of the optical processing is related to the relative positions of the optical film and other components such as the light source.
Therefore, the optical film in the backlight module needs to be kept relatively still with respect to the position of other components such as the light source. That is, in the process of using the backlight module, the optical film cannot move, and needs to be fixed.
Once the relative positions of the optical film and other components such as the light source change, the light emitted by the light source passes through the optical film without being subjected to preset optical treatment and cannot be converted into uniform white light, and the backlight module cannot provide uniform white light for the display panel, so that the display effect of the display panel is influenced.
In the prior art, the optical film in the backlight module is fixed by adopting a mode of fixing an adhesive tape, so that the following problems exist: the viscidity of sticky tape receives the temperature to influence great on the one hand, and when backlight unit's temperature was too high, the viscidity of sticky tape reduced, influences fixed effect, and when the viscidity of sticky tape was not enough, the removal probably appeared in the position of optics diaphragm, and backlight unit's inner structure is insecure, and the performance goes wrong. On the other hand, when the optical film is maintained and replaced, the original adhesive tape is required to be removed firstly, the optical film can be taken down from the backlight module, and after the maintenance and replacement are completed, the new adhesive tape is required to be used for fixing the optical film, so that the optical film is inconvenient to disassemble and assemble.
In order to fix the optical diaphragm, the internal structure of the backlight module is firm, the position of the optical diaphragm is fixed, the backlight module is guaranteed to be capable of emitting uniform white light, and meanwhile, the maintenance and the replacement of the optical diaphragm are facilitated. Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure. Fig. 2 is a top view of the backlight module shown in fig. 1. Fig. 3 is a schematic cross-sectional view along the dotted line a-a' in fig. 2. Fig. 4 is another schematic cross-sectional view along the dashed line a-a' in fig. 2. Fig. 5 is a further schematic cross-sectional view along the dashed line a-a' in fig. 2. As shown in fig. 1, 2 and 3, the backlight module includes a bottom plate 110 and a rubber frame 120, and the bottom plate 110 and the rubber frame 120 form an accommodating space 130. The backlight module further includes an optical film 140, the optical film 140 is located on a side of the accommodating space 130 away from the bottom plate 110, and the optical film 140 and the rubber frame 120 are connected by a magnetic structure 150.
The backlight module that this application embodiment provided can be straight following formula backlight module, and accommodation space 130 can be used for holding the lamp plate, sets up a plurality of pointolite on the lamp plate.
The receiving space 130 may be used to receive a light guide plate, and the dots in the light guide plate may diffuse light emitted from a light source located at a side of the backlight module.
The optical film 140 and the rubber frame 120 are connected through the magnetic structure 150, on one hand, the magnetic force generated by the magnetic structure is less influenced by the temperature, so that the internal structure of the backlight module is firm, the position of the optical film in the backlight module is fixed, the light emitted by the point light source can be converted into uniform white light after passing through the optical film, and the performance is stable. On the other hand, when the optical diaphragm is maintained and replaced, the optical diaphragm can be taken down from the backlight module only by overcoming the magnetic force of the magnetic structure, and after the maintenance and replacement are completed, the optical diaphragm and the rubber frame are automatically fixed through the magnetic force of the magnetic structure, so that the optical diaphragm is convenient and fast.
In addition, the optical film 140 of the backlight module provided by the embodiment of the invention at least comprises one of a diffusion plate, a first diffusion sheet, a prism sheet and a second diffusion sheet.
The diffusion plate can perform fuzzification processing on the point light source, the first diffusion sheet can perform homogenization processing on light, the prism sheet can perform total reflection and refraction of light, disperse light is emitted in a certain angle range in a centralized mode, the second diffusion sheet can separate the interior of the backlight module from the outside, the situation that an external object damages the assembly of the backlight module is avoided, and meanwhile the prism sheet damages the display panel is avoided.
It is understood that the magnetic structure 150 may include the magnet 210 and the magnetic metal structure 220, and may also include a plurality of magnets 210, which is not limited in the embodiment of the present application.
An alternative implementation manner is that a magnet 210 is disposed on the rubber frame 120, a magnetic metal structure 220 is disposed on the optical membrane 140, and a magnetic force is generated between the magnet 210 and the magnetic metal structure 220 to fix the optical membrane 140 and the rubber frame 120.
The magnetic metal structure 220 is made of a magnetic metal material such as iron, cobalt, or nickel, and can be attracted to the magnet 210.
An optional implementation manner is that a magnetic metal structure 220 is disposed on the rubber frame 120, a magnet 210 is disposed on the optical membrane 140, and a magnetic force is generated between the magnet 210 and the magnetic metal structure 220 to fix the optical membrane 140 and the rubber frame 120.
In an alternative implementation, the magnets 210 are disposed on both the rubber frame 120 and the optical film 140, and a magnetic force is generated between the magnets 210 to fix the optical film 140 and the rubber frame 120.
The following description will be given by taking as an example an implementation in which the magnet 210 is provided on the bezel 120 and the magnetic metal structure 220 is provided on the optical film 140.
As shown in fig. 2, the optical film 140 includes a first partition 140a and a second partition 140b, and the second partition 140b surrounds the first partition 140 a. As shown in fig. 3-5, the optical film 140 has a first fixing portion 141, the first fixing portion 141 is located in the second partition 140b, and the magnetic metal structure 220 is disposed on the first fixing portion 141. The frame 120 has a second fixing portion 121, and the magnet 210 is disposed on the second fixing portion 121. In a direction perpendicular to the plane of the backlight module, a projection of the first fixing portion 141 and a projection of the second fixing portion 121 at least partially overlap.
The first partition 140a corresponds to a display area of the display panel, and the second partition 140b corresponds to a frame area of the display panel. In order to avoid the influence of the magnet 210 and the magnetic metal structure 220 on the display of the display panel, the first fixing portion 141 where the magnetic metal structure 220 is located in the second sub-area 140b of the optical film 140, and the second fixing portion 121 where the magnet 210 is located corresponds to the second sub-area 140b of the optical film 140.
It can be understood that, since the magnet 210 is disposed on the second fixing portion 121 and the magnetic metal structure 220 is disposed on the first fixing portion 141, when the projection of the first fixing portion 141 and the projection of the second fixing portion at least partially overlap, magnetic attraction is generated between the magnet 210 and the magnetic metal structure 220, so that the optical film 140 and the bezel 120 are fixed.
Based on the foregoing description, it can be understood that the backlight module provided in the embodiments of the present application may include a plurality of optical films 140, in order to fix each of the optical films 140 to the frame 120.
In an alternative implementation manner, as shown in fig. 4 and 5, a side of the second fixing portion 121 close to the first fixing portion 141 is a stepped structure, and the stepped structure includes a plurality of steps, and the magnet 210 is disposed on the steps.
In fig. 4 and 5, the stepped structure of the bezel 120 enables a projection of the first fixing portion 141 of each optical film 140 to at least partially overlap a projection of the second fixing portion 121, so that the magnetic metal structure 220 of the first fixing portion 141 of each optical film 140 can be fixed to the magnet 210 correspondingly disposed on the second fixing portion 121 of the bezel 120.
Further, the magnetic metal structure 220 of the backlight module provided in the embodiment of the present application can have various possible implementation manners. For convenience of description, the structure of the rubber frame 120 in fig. 3 is used for all the aforementioned backlight modules.
Fig. 6 is an enlarged schematic view of the region M1 in fig. 3. Fig. 7 is a top view corresponding to fig. 6. As shown in fig. 6 and 7, the magnetic metal structure 220 is a plurality of magnetic metal particles doped in the first fixing portion 141.
An alternative implementation manner is to uniformly dope the magnetic metal particles in the first fixing portion 141, so that the density of the magnetic metal particles in each portion of the first fixing portion 141 is the same, and thus each portion of the first fixing portion 141 can receive the magnetic force of the magnet 210 and be uniformly stressed.
During the formation of the optical film 140, the first fixing portion 141 is doped with magnetic metal particles, after the formation of the optical film 140, the magnetic metal particles and the optical film 140 are integrated, when the first fixing portion 141 of the optical film 140 is close to the second fixing portion 121 of the bezel 120, the magnet 210 generates magnetic attraction to the magnetic metal particles in the first fixing portion 141, and when the first fixing portion 141 contacts the magnet 210, the optical film 140 is fixed to the bezel 120.
The magnetic metal particles doped in the first fixing portion 141 are used as the magnetic metal structure 220, so that the magnetic metal structure 220 and the optical diaphragm 140 can be integrated, and the magnetic metal structure 220 and the optical diaphragm 140 are prevented from being separated, so that the optical diaphragm 140 can be fixed to the frame 120.
In addition, since the magnetic metal particles are doped in the optical film 140, the occupation of additional space is avoided, and the internal space of the backlight module is saved.
Further, in order to take account of the magnetic force between the magnetic metal particles and the magnet 210 and the influence of the magnetic metal particles on the optical film 140, the ratio of the total volume of the plurality of magnetic metal particles to the volume of the first fixing portion 141 in the embodiment of the present application is M, wherein M is greater than or equal to 10% and less than or equal to 70%.
When M is less than 10%, the magnetic force between the magnetic metal particles and the magnet 210 is too small to fix the optical film 140, and when M is greater than 70%, the total volume of the magnetic metal particles is too large to form a doped structure in the first fixing portion 141.
In an alternative implementation, fig. 8 is another enlarged schematic view of the region M1 in fig. 3. As shown in fig. 8, the magnetic metal structure 220 is a magnetic metal layer 220a, and the magnetic metal layer 220a is located on a surface of the first fixing portion 141 close to the second fixing portion 121.
After the optical film 140 is formed, the magnetic metal layer 220a is embedded on one side surface of the first fixing portion 141 close to the plastic frame 120, when the first fixing portion 141 of the optical film 140 is close to the second fixing portion 121 of the plastic frame 120, the magnet 210 generates magnetic attraction on the magnetic metal layer 220a embedded in the first fixing portion 141, and when the magnetic metal layer 220a contacts with the magnet 210, the optical film 140 is fixed with the plastic frame 120.
By using the magnetic metal layer 220a as the magnetic metal structure 220, the magnetic metal layer 220a can be embedded in the first fixing portion 141 of the optical film 140 on the side close to the rubber frame 120 after the optical film 140 is formed, and the existing manufacturing process of the optical film 140 does not need to be modified. The magnetic metal layer 220a is embedded into the first fixing portion 141 only after the optical film 140 is manufactured, so that the process is simple and easy to implement.
Furthermore, in order to take into account the magnetic force between the magnetic metal layer 220a and the magnet 210 and the influence of the magnetic metal layer 220a on the optical film 140, the thickness of the magnetic metal layer 220a is N along the light-emitting side direction of the backlight module, wherein N is greater than or equal to 1 μm and less than or equal to 8 μm.
When N is less than 1 μm, the magnetic force between the magnetic metal layer 220a and the magnet 210 is too small to fix the optical film 140, and when N is greater than 8 μm, the distance between the optical film 140 and other components is too large, which affects the processing effect of the optical film 140.
In an alternative implementation, fig. 9 is a schematic enlarged view of the region M1 in fig. 3. As shown in fig. 9, the magnetic metal structure 220 is a magnetic metal pillar 220b, and the magnetic metal pillar 220b penetrates through the first fixing portion 141 along the light-emitting side direction of the backlight module.
An opening is made on the first fixing portion 141, and the opening is filled with the magnetic metal pillar 220b, so that the magnetic metal pillar 220b is embedded in the first fixing portion 141. When the first fixing portion 141 of the optical film 140 is close to the second fixing portion 121 of the plastic frame 120, the magnet 210 generates magnetic attraction to the magnetic metal pillar 220b in the first fixing portion 141, and when the magnetic metal pillar 220b contacts the magnet 210, the optical film 140 is fixed to the plastic frame 120.
By using the magnetic metal pillar 220b as the magnetic metal structure 220, an opening can be formed on the first fixing portion 141 of the optical film 140 after the optical film 140 is formed, and the magnetic metal pillar 220b is filled in the opening, without modifying the existing manufacturing process of the optical film 140. Only after the optical film 140 is manufactured, the opening is formed on the first fixing portion 141, and the magnetic metal pillar 220b is embedded into the first fixing portion 141, so that the process is simple, the implementation is easy, and the magnetic metal pillar 220b is in the opening of the first fixing portion 141, thereby avoiding occupying extra space and saving the internal space of the backlight module.
Further, in order to prevent the magnetic metal pillar 220b from falling off, along the light emitting direction of the backlight module, two ends of the magnetic metal pillar 220b are respectively provided with a magnetic metal sheet 220c, the magnetic metal sheets 220c are respectively located on the surface of the first fixing portion 141 close to the side of the second fixing portion 121, and the surface of the first fixing portion 141 far away from the side of the second fixing portion 121.
The magnetic metal sheet 220b and the magnetic metal column 220c may be an integrally formed structure, so that the optical film 140 and the magnetic metal column 220c are firmly fixed to avoid falling off.
In order to fix the optical film 140 more firmly, in all the backlight modules described above, an adhesive tape may be further included, and the adhesive tape is located on the adhesive frame 120 and the optical film 140 and is used for bonding the adhesive frame 120 and the optical film 140.
An embodiment of the present application further provides a display device, as shown in fig. 10 and fig. 11, fig. 10 is a schematic structural diagram of the display device provided in the embodiment of the present application, and fig. 11 is a schematic cross-sectional diagram of the display device in fig. 10, where the display device includes the display panel. The specific structure of the display panel has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 10 and 11 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic paper book, or a television.
Because the display device that this application embodiment provided includes above-mentioned display panel, consequently, adopt this display device, optical film and gluey frame are connected through magnetic structure, and the magnetic force that magnetic structure produced is influenced by the temperature less on the one hand for backlight unit's inner structure is firm, and optical film is fixed in backlight unit's position, and the light that the pointolite sent can carry out even mixed light before getting into optical film, changes into even white light after passing optical film, the stable performance. On the other hand, when the optical diaphragm is maintained and replaced, the optical diaphragm can be taken down from the backlight module only by overcoming the magnetic force of the magnetic structure, and after the maintenance and replacement are completed, the optical diaphragm and the rubber frame are automatically fixed through the magnetic force of the magnetic structure, so that the optical diaphragm is convenient and fast.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (9)
1. A backlight module, comprising:
a base plate;
a rubber frame;
the bottom plate and the rubber frame form an accommodating space;
the optical film is positioned on one side of the accommodating space far away from the bottom plate;
the optical diaphragm and the rubber frame are connected through a magnetic structure;
the backlight module comprises a plurality of optical films;
each optical film comprises a first subarea and a second subarea, wherein the second subarea surrounds the first subarea;
each optical film is provided with a first fixing part, the first fixing part is positioned in the second partition, and the magnetic structure is arranged on the first fixing part;
the rubber frame is provided with a second fixing part, one side, close to the first fixing part, of each optical membrane is of a step-shaped structure, the step-shaped structure comprises a plurality of steps, and the magnetic structure is arranged on the steps of the second fixing part;
in a direction perpendicular to a plane where the backlight module is located, the projection of the first fixing portion of each optical film is at least partially overlapped with the projections of the steps of the second fixing portion in sequence, so that the magnetic structure of the first fixing portion of each optical film can be fixed with the magnetic structure arranged on the step corresponding to the second fixing portion of the rubber frame in sequence;
the magnetic structure comprises a magnet and a magnetic metal structure, the magnetic structure arranged on the step of the second fixing part of the rubber frame is the magnet, and the magnetic structure arranged on the first fixing part of the optical membrane is the magnetic metal structure; or, the magnetic structure arranged on the step of the second fixing part of the rubber frame is a magnetic metal structure, and the magnetic structure arranged on the first fixing part of the optical membrane is a magnet;
or,
the magnetic structure comprises a plurality of magnets, the magnetic structure arranged on the step of the second fixing part of the rubber frame is a magnet, and the magnetic structure arranged on the first fixing part of the optical membrane is also a magnet;
the optical film at least comprises one of a diffusion plate, a first diffusion sheet, a prism sheet and a second diffusion sheet;
the optical film is used for converting the light passing through the optical film into uniform white light.
2. The backlight module of claim 1,
the magnetic metal structure is a plurality of magnetic metal particles;
the plurality of magnetic metal particles are doped in the first fixing portion or the second fixing portion.
3. The backlight module of claim 2,
the ratio of the total volume of the plurality of magnetic metal particles to the volume of the first fixing part or the second fixing part is M, wherein M is more than or equal to 10% and less than or equal to 70%.
4. The backlight module of claim 1,
the magnetic metal structure is a magnetic metal layer;
the magnetic metal layer is positioned on the surface of one side, close to the second fixing part, of the first fixing part, or positioned on the surface of one side, close to the first fixing part, of the second fixing part.
5. The backlight module of claim 4,
and the thickness of the magnetic metal layer is N along the light-emitting side direction of the backlight module, wherein N is more than or equal to 1 mu m and less than or equal to 8 mu m.
6. The backlight module of claim 1,
the magnetic metal structure is a magnetic metal column;
the magnetic metal column penetrates through the first fixing part along the light-emitting side direction of the backlight module.
7. The backlight module of claim 6,
following backlight unit's light-emitting direction, the both ends of magnetic metal post have the magnetic metal piece respectively, the magnetic metal piece is located respectively first fixed part is close to the surface of second fixed part one side, and first fixed part is kept away from the surface of second fixed part one side.
8. The backlight module according to any of claims 1-4,
the optical film is characterized by further comprising an adhesive tape, wherein the adhesive tape is located between the adhesive frame and the optical film and used for bonding the adhesive frame and the optical film.
9. A display device, comprising:
the backlight module according to any of claims 1-8, and a display panel located at a light exit side of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842380.6A CN110570766B (en) | 2019-09-06 | 2019-09-06 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107450207B (en) * | 2017-09-21 | 2019-07-30 | 京东方科技集团股份有限公司 | A kind of display device and its control device, adsorption system |
| CN111474769A (en) * | 2020-05-13 | 2020-07-31 | 武汉华星光电技术有限公司 | Backlight module structure, backlight module structure manufacturing method and display panel |
| CN114187832A (en) * | 2021-12-01 | 2022-03-15 | 惠州华星光电显示有限公司 | Backlight module and display device |
| CN117555179B (en) * | 2024-01-11 | 2024-05-10 | 深圳市华皓伟业光电有限公司 | Backlight module capable of adjusting light emitting angle |
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