CN110515240B - Backlight module, manufacturing method thereof and display device - Google Patents
Backlight module, manufacturing method thereof and display device Download PDFInfo
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- CN110515240B CN110515240B CN201910817434.3A CN201910817434A CN110515240B CN 110515240 B CN110515240 B CN 110515240B CN 201910817434 A CN201910817434 A CN 201910817434A CN 110515240 B CN110515240 B CN 110515240B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the invention provides a backlight module, a manufacturing method thereof and a display device, wherein the backlight module comprises: the LED lamp comprises a lamp panel, a lamp body and a lamp cover, wherein the lamp panel comprises a substrate, LED lamp beads arranged on the substrate in an array mode, and lapping plates arranged at two ends of the substrate oppositely, wherein the lapping plates and the substrate form a groove-shaped structure; the iron frame is arranged on one side of the substrate, which is far away from the LED lamp beads, and comprises a bottom plate and a side wall; and one end of the rubber frame, which is far away from the bottom plate, is in lap joint with the lap joint plate. The backlight module is used for solving the problem that the display device is easy to display mura.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module, a manufacturing method thereof and a display device.
Background
At present, the curved surface display device can provide a user with wider visual field feeling, provides better surrounding type impression, is more fit with the physiological structure of human eyes, and creates zero-distortion visual experience, thereby being widely applied.
In the prior art, the curved surface display device is specifically manufactured by adopting hot-press bending to design the curved surface of the glass cover plate, then the flat and straight display panel is adhered to the curved glass cover plate through OCA glue, and the backlight module is formed by directly bending and molding the mould. Finally, the curved display device is manufactured.
However, in the process of manufacturing the curved backlight module, the lamp panel is a PCB, which is not easy to be made into a curved panel with a fixed curvature, and the flat lamp panel is forced to be attached to the curved bezel by glue stretch bending. Because there is the internal stress resilience in lamp plate itself, also has the extrusion resilience with the chase, often can lead to the bottom plate peeling (separation) of lamp plate and chase because the stress is too big to lead to LED lamp pearl on the lamp plate to the distance (mixed light district) inhomogeneous between diffusion plate, appear showing the mura phenomenon (the luminance is inhomogeneous promptly, causes the phenomenon of various vestiges).
Therefore, the display mura phenomenon of the display device is easily caused by the conventional backlight module.
Disclosure of Invention
The embodiment of the invention provides a backlight module, a manufacturing method thereof and a display device, which are used for solving the problem that the display device is easy to display mura phenomenon in the conventional backlight module.
In a first aspect, an embodiment of the present invention provides a backlight module, including:
the LED lamp comprises a lamp panel, a lamp body and a lamp cover, wherein the lamp panel comprises a substrate, LED lamp beads arranged on the substrate in an array mode, and lapping plates arranged at two ends of the substrate oppositely, wherein the lapping plates and the substrate form a groove-shaped structure;
the iron frame is arranged on one side of the substrate, which is far away from the LED lamp beads, and comprises a bottom plate and a side wall;
and one end of the rubber frame, which is far away from the bottom plate, is in lap joint with the lap joint plate.
In a second aspect, an embodiment of the present invention further provides a display device, including:
the backlight module as described above;
the liquid crystal display panel is positioned on the light emergent side of the backlight module;
the backlight module and the liquid crystal display panel are both bent along a central shaft.
In a third aspect, an embodiment of the present invention provides a method for manufacturing a backlight module, including:
forming the lap joint plate in an injection molding mode;
the lamp panel is connected with the rubber frame through the lapping plate.
The invention has the following beneficial effects:
the embodiment of the invention provides a backlight module, a manufacturing method thereof and a display device, wherein lapping plates are arranged at two opposite ends of a substrate of a lamp panel of the backlight module, one end of a rubber frame, which is far away from a bottom plate of an iron frame, is connected with the lapping plates, namely, the lamp panel is connected with the rubber frame through the lapping plates, and the separation design between the lamp panel and the bottom plate of the iron frame is realized, so that the brightness uniformity of the backlight module is improved, the mura phenomenon displayed by the display device is effectively avoided, and the display effect of the display device is improved.
Drawings
FIG. 1 is a schematic view of a conventional backlight module;
fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a lamp panel in a backlight module according to an embodiment of the present invention;
FIG. 4 is a top view of a substrate in a backlight module according to an embodiment of the present invention;
FIG. 5 is a side view of a strap plate of a backlight module according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of the connection between the rubber frame and the overlapping portion of the backlight module according to the embodiment of the present invention;
fig. 7 is a schematic structural view illustrating connection between a rubber frame and a connecting portion in a backlight module according to an embodiment of the present invention;
FIG. 8 is a schematic view of another exemplary embodiment of a connection structure between a rubber frame and a bonding portion of a backlight module;
FIG. 9 is a schematic view of another backlight module according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 11 isbase:Sub>A schematic cross-sectional view taken along line A-A' of FIG. 10;
fig. 12 is a flowchart of a method for manufacturing a backlight module according to an embodiment of the invention.
Detailed Description
The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.
In addition, it should be understood that the terms first, second, etc. in the description of the embodiments of the invention are used for distinguishing between the descriptions and are not intended to indicate or imply relative importance or order to be construed.
It should be understood that the preferred embodiments described below are only for illustrating and explaining the present invention and are not to be used for limiting the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict. Also, the shapes and sizes of the various elements in the drawings are not to scale, but are merely illustrative of the present invention.
As shown in fig. 1, in the process of manufacturing a curved backlight module, an iron frame 1 is often bent to a certain curvature, and a flat lamp panel 2 is forcibly bent to be attached to the iron frame 1. Because lamp plate 2 itself has the internal stress to kick-back, also has the extrusion to kick-back with chase 1, often can lead to taking place peeling (separation) because stress is too big between lamp plate 2 and the bottom plate 1' of chase 1. Therefore, the distance between the LED lamp beads 3 on the lamp panel 2 and the diffusion plate 4 is not uniform, so that the backlight module emits light unevenly, the brightness at different positions is different, and the phenomenon of uneven brightness appears visually. In fig. 1, 5 is a rubber frame for mounting the diffuser plate 4.
The embodiment of the invention provides a backlight module, a manufacturing method thereof and a display device, aiming at the problem that the display mura of the display device is easily caused when the conventional backlight module is bent. In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, specific embodiments of a backlight module, a manufacturing method thereof and a display device provided in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention, where the backlight module includes:
the LED lamp comprises a lamp panel 10, wherein the lamp panel 10 comprises a substrate 101, LED lamp beads 102 arranged on the substrate 101 in an array mode, and lapping plates 103 arranged at two ends of the substrate 101 oppositely, wherein the lapping plates 103 and the substrate 101 form a groove-shaped structure;
in the embodiment of the present invention, the strap 103 and the substrate 101 form a slot-type structure, which may be a "U" shaped structure. Because the base plate 101 of the lamp panel 10 is usually a hard plate and is not easy to bend, the base plate 101 and the lamp panel 10 are spliced to form a groove-shaped structure through the lapping plates 103 at the two ends of the base plate 101. In the actual use process of the backlight module, if the lamp panel is damaged, the lamp panel 10 needs to be replaced. Because the concatenation between lapping plate 103 and the lamp plate 10 is connected, through the simple replacement of device, fall the lamp plate that takes place the damage with new lamp plate replacement, alright in order to realize the high-speed joint between lapping plate 103 and new lamp plate to backlight unit's performance has been improved.
The iron frame 20 is arranged on one side of the substrate 101, which is far away from the LED lamp bead 102, and the iron frame 20 comprises a bottom plate 201 and a side wall 202;
the rubber frame 30, the one end of the rubber frame 30 far away from the bottom plate 201 is lapped with the lapping plate 103.
In the embodiment of the present invention, an end of the rubber frame 30 away from the bottom plate 201 is partially overlapped with the overlapping plate 103. Specifically, the adhesive tape or the clamping groove is used for realizing the partial overlapping between one end of the adhesive frame 30 far away from the bottom plate 201 and the overlapping plate 103. For example, a double-sided tape is attached to an end of the adhesive frame 30 away from the bottom plate 201, and the attachment plate 103 and the adhesive frame 30 are attached together by the double-sided tape, thereby achieving connection between the attachment plate 103 and the adhesive frame 30.
In the embodiment of the invention, the lapping plates 103 are arranged at two opposite ends of the substrate 101 of the lamp panel 10 of the backlight module, and one end of the rubber frame 30, which is far away from the bottom plate 201 of the iron frame 20, is connected with the lapping plates 103. Thereby connect lamp plate 10 and gluey frame 30 through bridging plate 103, realize the separation setting between lamp plate 10 and the bottom plate 201 of chase 20. Because separation setting (be promptly contactless between the two, there is certain clearance) between the bottom plate 201 of lamp plate 10 and chase 20, at the in-process of the bottom plate 201 of the chase 20 of buckling, the bottom plate 201 of lamp plate 10 and chase 20 does not influence each other, does not have the influence of resilience stress between the two, and LED lamp pearl 102 on the lamp plate 10 is comparatively even to the distance between diffuser plate to effectively avoided display device to show the mura phenomenon, improved curved surface display device's display effect.
In the specific implementation process, the backlight module according to the embodiment of the invention can also be applied to a non-curved display device (i.e. a flat display device), and the problem of uneven light emission of the backlight module caused by cracking of glue for attaching the lamp panel 10 and the bottom plate 201 of the bezel 20 does not exist. That is to say, when the lamp panel 10 of the embodiment of the present invention is directly applied to the flat backlight module, the uniform light emission of the flat backlight module can still be ensured, and the display effect of the flat display device is also better.
In the specific implementation process, a person skilled in the art can set the distance between the backlight module and the light-emitting module according to the actual requirement on the light-emitting uniformity of the backlight module. For example, the distance between the bottom plate 201 of the adjusting lamp panel 10 and the iron frame 20 is 1mm, and the distance between the bottom plate 201 of the adjusting lamp panel 10 and the iron frame 20 is 2mm. Through the distance between the bottom plate 201 of adjustment lamp plate 10 and chase 20 to the realization is to backlight unit's the nimble adjustment of light-emitting homogeneity, realizes backlight unit's diversified design.
In the embodiment of the present invention, in order to improve the efficiency of the manufacturing process of the strap 103 in the backlight module, as shown in fig. 2, the strap 103 includes a connection part 1031 and a strap part 1032, the connection part 1031 extends in a direction away from the bottom plate 201, the strap part 1032 extends in a direction close to the rubber frame 30, and the strap part 1032 is in strap connection with the rubber frame 30.
In some optional embodiments, as shown in fig. 3, the lamp panel 10 has a schematic structural diagram in an XYZ coordinate system, wherein a long side of the substrate 101 extends along an X-axis direction, a short side of the substrate 101 extends along a Y-axis direction, and the connection part 1031 extends along a Z-axis direction. Fig. 4 shows a top view of the base plate 101 (i.e., taken in a direction opposite to the Z-axis), and fig. 5 shows a side view of the strap 103 (i.e., taken in a direction opposite to the X-axis). The connection part 1031 of the strap 103 is connected to the substrate 101 of the lamp panel 10 through the first bayonet structure 10311 and the first slot structure 1011. Specifically, the opposite ends of the substrate 101 are provided with first notch structures 1011, and specifically, the first notch structures 1011 are formed by respectively digging out portions of the opposite ends of the substrate 101. An end of the connection portion 1031 close to the substrate 101 is provided with a first bayonet structure 10311, and specifically, the first bayonet structure 10311 is formed by a protruding structure of the connection portion 1031. The first bayonet structure 10311 can be accommodated in the first slot structure 1011, thereby realizing the connection of the substrate 101 with the connecting portion 1031.
In the specific implementation process, the connection mode between the first card slot structure 1011 and the first card slot structure 10311 is simple and easy for a user to operate, and the structural stability is good. Consequently, when guaranteeing that lapping plate 103 is stable, realize the quick replacement to lamp plate 10 to improve backlight unit's performance. In addition, in the implementation process, the substrate 101 may be provided with a screw or a rivet to achieve a fixed connection with the connection portion 1031. Of course, the connection between the substrate 101 and the connection part 1031 may be designed by those skilled in the art according to actual needs, and is not illustrated here.
In some alternative embodiments, as shown in fig. 6, a schematic view of the fixed connection between the rubber frame 30 and the overlapping portion 1032 through the double-sided adhesive 301 is shown. Specifically, the double-sided tape 301 is attached to the adhesive frame 30, and the fixed connection between the overlapping portion 1032 and the adhesive frame 30 is achieved by the double-sided tape 301. In addition, the double-sided tape 301 may be attached to one end of the overlapping part 1032 close to the rubber frame 30, and the fixed connection between the overlapping part 1032 and the rubber frame 30 may be achieved by the double-sided tape 301. Because double faced adhesive tape 301's cost is lower, and easily attached fixedly, when guaranteeing stable connection between overlap portion 1032 and gluey frame 30, reduced backlight unit's preparation efficiency.
In some optional embodiments, in order to ensure the stability of the strap 103, the usability of the backlight module for uniformly emitting light is further improved. As shown in fig. 7, one side of the connecting portion 1031 close to the glue frame 30 is attached to the glue frame 30 by another double-sided adhesive tape 301', and the other double-sided adhesive tape 301' may be firstly attached to one side of the glue frame 30 close to the lamp panel 10, and then one side of the connecting portion 1031 close to the glue frame 30 is bonded to the glue frame 30, so as to improve the usability of the backlight module.
In some alternative embodiments, as shown in fig. 8, a schematic view of the fixed connection between the rubber frame 30 and the overlapping portion 1032 through the second engaging groove structure 302 is shown. In a specific implementation process, the second card slot structure 302 is directly formed while the plastic frame 30 is injection molded, and specifically, the overlapping portion 1032 is connected with the plastic frame 30 through the second card slot structure 302. The lap portion 1032 and the rubber frame 30 are tightly fixed together through the second slot structure 302, so that the stability of the lap plate 30 is improved, the stability of the backlight module is ensured, and the light emitting uniformity of the backlight module is improved.
In the embodiment of the invention, in order to improve the efficiency of the manufacturing process of the connecting portion 1031 and the connecting portion 1032 in the backlight module, the connecting portion 1031 and the connecting portion 1032 may be designed by integral molding, or may be designed by mechanical connection. Specifically, the connecting portion 1031 and the overlapping portion 1032 may be integrally formed by injection molding. It is also possible to injection mold the connecting part 1031 and the bridging part 1032 separately, and then connect them by mechanical means such as adhesive bonding, mechanical snap, etc. In addition, in order to improve the structural stability of the strap 103, reduce the design cost of the strap 103, and improve the service life of the backlight module, the connecting portion 1031 and the strap portion 1032 may be of a thermally-fixed hard plastic or metal structure.
In some alternative embodiments, the backlight module shown in fig. 9 includes an optical film 6, and the optical film 6 includes a diffuser plate 40, specifically, the diffuser plate 40 is located on the light emitting side of the LED lamp beads 102, so as to uniformly scatter the light from the LED lamp beads 102, thereby achieving uniform emission of the light after passing through the diffuser plate 40. In addition, the diffusion plate 40 has a good shielding effect on the lamp shadow, so that the light source is softer and more uniform.
In the specific implementation process, in order to achieve good light diffusivity, inorganic or organic light scattering particles may be added to the base material (for example, PMMA (polymethyl methacrylate), PC (polycarbonate), PS (polystyrene), or PP (polypropylene)) of the diffusion plate 40, or the microstructure processed on the surface of the base material is used to refract, reflect, and scatter incident light in different directions, so as to change the light traveling path of the LED lamp beads 102, achieve sufficient diffusion of the incident light, and improve the light emission uniformity of the backlight module.
In the embodiment of the present invention, in order to improve the light-emitting uniformity of the backlight module, as shown in fig. 9, the optical film 6 further includes a diffusion sheet 50, a lower brightness enhancement sheet 60, and an upper brightness enhancement sheet 70 disposed on the diffusion plate 40 along a direction away from the substrate 101.
In the specific implementation process, the diffusion sheet 50 disposed on the diffusion plate 40 shields the microstructures of the diffusion plate 40, so as to improve the brightness of the emergent light, and further improve the brightness uniformity. The base material of the diffusion sheet 50 is generally PET (polyethylene terephthalate) and PC (polycarbonate), and the thickness thereof is generally about 100 μm. The upper surface of the diffusion sheet 50 is generally coated with a resin layer (i.e., diffusion layer) containing diffusion particles of different sizes; the lower surface is an antistatic layer for preventing close adhesion between the membranes or a protective layer (namely a protective layer) for preventing scratches between the membranes, and small and uniform diffusion particles are uniformly distributed in the protective layer. In addition, the display brightness of the backlight module is further improved through the lower brightness enhancement sheet 60 and the upper brightness enhancement sheet 70, and the display uniformity of the display module is improved. Of course, those skilled in the art can also set other optical film materials located on the light-emitting side of the LED lamp bead 102 according to actual needs, which are not described herein again.
Based on the same inventive concept, the embodiment of the invention also provides a display device. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The implementation of the display device can be seen in the above embodiments of the backlight module, and repeated descriptions are omitted.
In a specific implementation process, an embodiment of the present invention provides a display device, as shown in fig. 10 and 11, including: a liquid crystal display panel 80 and the backlight module 90 provided in the embodiment of the present invention;
the liquid crystal display panel 80 is located at the light-emitting side of the backlight module 90;
the backlight module 90 and the liquid crystal display panel 80 are both bent along a central axis.
In some alternative embodiments, the display device (i.e., the vehicle curved screen) of the present embodiment may be provided on the vehicle in order to provide the driver with a better driving view. Be used for on-vehicle demonstration through this display device, provide wider field of vision impression again for the driver to and when better encircleing the impression, because backlight unit's light-emitting homogeneity, thereby for the driver provides good visual experience.
In the implementation process, in order to improve the efficiency of the manufacturing process of the display device, the bending curvature of the backlight module 90 and the liquid crystal display panel 80 is usually small.
In the implementation process, the liquid crystal display panel 80 includes an upper polarizer, a CF substrate, a TFT substrate, and a lower polarizer. Those skilled in the art can select other film materials according to the actual display effect of the liquid crystal display panel 80. Fig. 11 isbase:Sub>A sectional view alongbase:Sub>A-base:Sub>A' of the display device of fig. 10, in which the liquid crystal display panel 80 is attached to the cover plate 100 by the optical adhesive OCA 110 in the display device of fig. 11. A foam adhesive tape 120 is arranged between the cover plate 100 and the adhesive frame 30, and a foam adhesive tape 120 is also arranged between the optical adhesive 110 and the adhesive frame 30, so that the bonding of the related structures is realized. In addition, in the embodiment of the present invention, the cover plate 100 protects the liquid crystal display panel 80 from being damaged, and improves the usability of the display device by providing a coating layer having a specific function on the cover plate 10, for example, the coating layer includes one or more of an AG (anti-glare) protective film layer, an AF (anti-fingerprint) protective film layer, and a UV (ultraviolet) protective film layer, which is not limited herein.
In the embodiment of the invention, the lapping plates are arranged at the two opposite ends of the base plate of the lamp panel of the backlight module, and one end of the rubber frame, which is far away from the bottom plate of the iron frame, is connected with the lapping plates, namely, the lamp panel is connected with the rubber frame through the lapping plates, so that the separation design between the lamp panel and the bottom plate of the iron frame is realized. Even if when backlight unit 90 and liquid crystal display panel 80 all follow a center pin crooked, because the bottom plate of lamp plate and chase is the separation design between, at the in-process of making curved surface display device, LED lamp pearl on the lamp plate is not influenced by the iron frame of buckling among the backlight unit to the distance between diffusion board, and lamp plate LED lamp pearl is comparatively even to the distance between diffusion board. Under the condition that the light emitted by the backlight module 90 is uniform, the mura phenomenon displayed by the display device is effectively avoided, and the display effect of the display device is improved.
Based on the same inventive concept, embodiments of the present invention further provide a method for manufacturing the backlight module, and since the principle of the method for manufacturing the backlight module to solve the problem is similar to that of the backlight module, the method for manufacturing the backlight module can be implemented with reference to the backlight module, and repeated descriptions thereof are omitted.
In a specific implementation process, an embodiment of the present invention provides a method for manufacturing the backlight module, as shown in fig. 12, the method may include:
s101: forming the lap joint plate by adopting an injection molding mode;
in a specific implementation, the strap is injection molded. The lap joint part and the connecting part of the lap joint plate can be integrally formed, or the lap joint part and the connecting part of the lap joint plate can be respectively formed, and then the lap joint part and the connecting part are connected. Since this specific molding technique belongs to the prior art, it is not described herein again.
S102: the lamp panel is connected with the rubber frame through the lapping plate.
In the specific implementation process, the lap plate connected with the lamp panel is connected with the rubber frame through the double faced adhesive tape or the clamping groove structure.
According to the backlight module, the manufacturing method thereof and the display device provided by the embodiment of the invention, the lapping plates are arranged at the two opposite ends of the substrate of the lamp panel of the backlight module, and one end of the rubber frame, which is far away from the bottom plate of the iron frame, is connected with the lapping plates. Thereby couple together lamp plate and gluey frame through the lap joint board, realize the separation design between the bottom plate of lamp plate and chase to improve backlight unit's luminance homogeneity, effectively avoided display device to show the mura phenomenon, improved display device's display effect.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A backlight module, comprising:
the LED lamp comprises a lamp panel, a lamp panel and a lamp body, wherein the lamp panel is a PCB (printed Circuit Board) and comprises a substrate, LED lamp beads distributed on the substrate in an array mode, and lapping plates arranged at two ends of the substrate oppositely, wherein the lapping plates and the substrate form a groove-shaped structure;
the iron frame is arranged on one side of the substrate, which is far away from the LED lamp beads, and comprises a bottom plate and a side wall;
one end of the rubber frame, which is far away from the bottom plate, is lapped with the lapping plate;
the lap joint plate comprises a connecting part and a lap joint part, the connecting part extends along the direction departing from the bottom plate, the lap joint part extends along the direction close to the rubber frame, and the lap joint part is lapped with the rubber frame; the lamp plate with separation setting between the bottom plate.
2. The backlight module as claimed in claim 1, wherein opposite ends of the substrate are provided with first clamping structures, and one end of the connecting portion adjacent to the substrate is provided with a first bayonet structure, and the substrate is connected to the connecting portion by receiving the first bayonet structure through the first clamping structures.
3. The backlight module as claimed in claim 1, wherein the joint part is connected to the adhesive frame by a double-sided adhesive tape.
4. The backlight module as claimed in claim 1, wherein the rubber frame includes a second catching structure, and the overlapping portion is connected to the rubber frame through the second catching structure.
5. The backlight module of claim 1, wherein the connecting portion is integrally formed with or mechanically connected to the overlapping portion.
6. The backlight module as claimed in claim 1, wherein the backlight module comprises a diffusion plate, and the diffusion plate is located at the light emitting side of the LED lamp beads.
7. The backlight module as claimed in claim 6, wherein the backlight module further comprises a diffusion sheet, a lower brightness enhancement sheet and an upper brightness enhancement sheet disposed on the diffusion plate along a direction away from the substrate.
8. The backlight module of claim 1, wherein the bonding plate is a thermally fixed rigid plastic.
9. A display device, comprising:
a backlight module according to any one of claims 1-8;
the liquid crystal display panel is positioned on the light-emitting side of the backlight module;
the backlight module and the liquid crystal display panel are both bent along a central shaft.
10. A method for fabricating a backlight module according to any one of claims 1-8, comprising:
forming the lap joint plate by adopting an injection molding mode;
the lamp panel is connected with the rubber frame through the lapping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN1564066A (en) * | 2004-04-07 | 2005-01-12 | 友达光电股份有限公司 | Backlight modular |
| CN1892320A (en) * | 2005-06-27 | 2007-01-10 | 先进能源科技公司 | Optimized frame system for a liquid crystal display device |
| CN202253221U (en) * | 2011-10-25 | 2012-05-30 | 京东方科技集团股份有限公司 | Backlight module |
| CN103278872A (en) * | 2009-05-22 | 2013-09-04 | 夏普株式会社 | Light reflecting sheet, light source device, and display device |
| CN110058441A (en) * | 2019-05-22 | 2019-07-26 | 惠州市华星光电技术有限公司 | Liquid crystal display die set, display device and production method |
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| CN1564066A (en) * | 2004-04-07 | 2005-01-12 | 友达光电股份有限公司 | Backlight modular |
| CN1892320A (en) * | 2005-06-27 | 2007-01-10 | 先进能源科技公司 | Optimized frame system for a liquid crystal display device |
| CN103278872A (en) * | 2009-05-22 | 2013-09-04 | 夏普株式会社 | Light reflecting sheet, light source device, and display device |
| CN202253221U (en) * | 2011-10-25 | 2012-05-30 | 京东方科技集团股份有限公司 | Backlight module |
| CN110058441A (en) * | 2019-05-22 | 2019-07-26 | 惠州市华星光电技术有限公司 | Liquid crystal display die set, display device and production method |
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