CN217060702U

CN217060702U - Mini Led backlight module and liquid crystal display device

Info

Publication number: CN217060702U
Application number: CN202220742430.0U
Authority: CN
Inventors: 张伟龙; 李伟; 杨景发
Original assignee: Maojia Technology Guangdong Co ltd
Current assignee: Maojia Technology Guangdong Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-26
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a Mini Led backlight unit and liquid crystal display device, wherein, Mini Led backlight unit includes backplate and center, is equipped with the reflector plate on the backplate, is equipped with a plurality of Mini Led lamp pearls on the reflector plate, and the center includes main body frame and bordures, and main body frame encircles around the backplate, and the cladding is at main body frame's lateral surface bordured. The utility model discloses technical scheme aims at optimizing backlight unit's structure, reduction in production cost.

Description

Mini Led backlight module and liquid crystal display device

Technical Field

The utility model relates to a backlight unit technical field, in particular to Mini Led backlight unit and liquid crystal display device.

Background

The liquid crystal display device has the advantages of thin body, energy conservation, high image quality and the like, is widely applied to the production of televisions, wherein Led (Light-Emitting Diode) televisions are widely applied, most of the existing Led televisions are backlight type liquid crystal display devices, and comprise a liquid crystal panel and a backlight module, the liquid crystal panel does not emit Light, and the direction of internal liquid crystal molecules is controlled by powering on and powering off, so that Light rays emitted from the backlight module are refracted to form images. Therefore, the brightness of the light emitted by the backlight module affects the image quality of the Led television.

In the existing Led television, because a large number of Mini Led lamp beads are used as a light source, the brightness of light per unit area is far greater than that of the traditional Led television, and the Mini Led television is far superior to the traditional Led television in performances such as contrast, image quality and the like. In the prior art, a reflection area is usually added inside a middle frame of a Mini Led backlight module. The addition of the reflection area provides more fine requirements for the processing of the middle frame of the Mini LED backlight module. The existing Mini Led television middle frame is generally an integrated middle frame made of metal materials, and the integrated middle frame is complex in structure and cannot be prepared in batches by directly injecting plastic through a mold. The metal integrated middle frame is extremely complex to process and can be prepared only through a plurality of processes such as an extrusion die, CNC (computer numerical control) processing and stamping. The processing of the metal integrated middle frame not only wastes a large amount of energy, but also is not beneficial to environmental protection, and occupies a large amount of material cost, equipment cost and processing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a Mini Led backlight unit aims at optimizing backlight unit's structure, reduction in production cost.

In order to achieve the above object, the utility model provides a Mini Led backlight unit, include:

the LED lamp comprises a back plate, wherein a reflecting sheet is arranged on the inner surface of the back plate, and a plurality of Mini LED lamp beads are arranged on the reflecting sheet;

the middle frame comprises a main body frame and a covered edge, the main body frame surrounds the periphery of the back plate, and the covered edge is covered on the outer side of the main body frame.

The utility model discloses an in one embodiment, the backplate includes the bottom plate and encloses to be located the curb plate at bottom plate edge, main part frame encircles to be set up in the curb plate is inboard, the cladding of borduring is in the outside of curb plate.

The utility model discloses an in the embodiment, main body frame is close to one side of Mini Led lamp pearl is equipped with the side reflector plate.

In an embodiment of the present invention, the main frame is a white plastic frame.

The utility model discloses an in the embodiment, main body frame is close to one side of Mini Led lamp pearl is the highlight face.

The utility model discloses an in one embodiment, the curb plate is equipped with one of the two of buckle and draw-in groove, main body frame keeps away from one side of Mini Led lamp pearl is equipped with another of the two of buckle and draw-in groove, the buckle card is gone into the draw-in groove, be used for with main body frame is fixed in the backplate.

The utility model discloses an in the embodiment, it includes base and side to bordure, the side cladding is in the outside of curb plate, the base is located the outside of bottom plate, be equipped with the retaining member on the base, be equipped with the locking hole on the bottom plate, the retaining member is inserted and is located in the locking hole, be used for with bordure and be fixed in the backplate.

In an embodiment of the present invention, a sunken platform is concavely disposed on an inner side of the top of the main frame for supporting the optical film.

In an embodiment of the present invention, the edge covering further includes a top edge, the top edge is located at one end of the edge covering, which is far away from the back plate, and is disposed opposite to the bottom edge, and the top edge is located above the sinking platform and used for compressing the optical film on the sinking platform.

The utility model also provides a liquid crystal disply device, include Mini Led backlight unit.

The invention optimizes the complex integrated middle frame into a main body frame and an edge covering part, simplifies the production process of the middle frame, improves the production efficiency, simultaneously uses plastic to replace metal materials to process the main body frame, reduces the production cost, has simpler structure compared with the prior integrated middle frame, can be prepared in batches by injection molding of a die, has lighter plastic than metal, accords with the characteristic of the trend of a Mini Led backlight module to light and thin design, and is not easy to corrode in a humid environment. The processing procedures of the main body frame and the edge covering of the frame are simpler than those of the traditional integrated middle frame, the energy consumed by processing is less, the purpose of emission reduction is achieved, the production efficiency is improved, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a Mini Led backlight module of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the Mini Led backlight module of the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of a liquid crystal display device according to the present invention;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is a schematic structural view of the connection between the buckle and the slot.

The reference numbers indicate:

the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the expression "and/or" as used throughout is meant to encompass three juxtaposed aspects, exemplified by "A and/or B", including either the A aspect, or the B aspect, or aspects in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a Mini Led backlight module 100, including:

the LED lamp comprises a back plate 10, wherein a reflector plate 30 is arranged on the inner surface of the back plate 10, and a plurality of Mini LED lamp beads 40 are arranged on the reflector plate 30;

the middle frame 20 comprises a main body frame 21 and a wrapping edge 23, the main body frame 21 is arranged around the back plate 10, and the wrapping edge 23 is wrapped on the outer side of the main body frame 21.

The existing integrated middle frame 20 is complex in structure, only metal materials can be selected and prepared through multiple processes such as extrusion die, CNC machining and stamping, production time consumption is long, and cost is high, therefore, the complex integrated middle frame 20 is optimized into the main body frame 21 and the wrapping edge 23, the production process of the middle frame 20 is simplified, production efficiency is improved, meanwhile, the main body frame 21 can be processed by using plastics to replace the metal materials, production cost is reduced, the structure of the optimized main body frame 21 is simpler compared with the existing integrated middle frame 20, mass preparation can be achieved through injection molding of a die, the plastics are lighter than metals, the characteristics that the Mini LED backlight module 100 tends to be light and thin in design are met, and corrosion is not easy to occur in a humid environment. The processing procedures of the main body frame 21 and the edge covering 23 of the frame 20 are simpler than those of the existing integrated middle frame 20, the energy consumed by processing is less, the purpose of emission reduction is achieved, the production efficiency is improved, and the production cost is reduced.

Referring to fig. 1 to 5, in an embodiment of the present invention, the back plate 10 includes a bottom plate 11 and a side plate 13 surrounding the bottom plate, the main frame 21 is disposed around the inner side of the side plate 13, and the covering edge 23 is covered on the outer side of the side plate 13.

The utility model discloses an among the technical scheme of an embodiment, 23 cladding curb plates 13 of borduring and with backplate 10 fixed connection, can fix 23 of borduring on bottom plate 11, when liquid crystal display device 1000 is wall-hung type Mini Led TV, can hide fixed knot and construct, improve the aesthetic property, also can fix 23 of borduring on curb plate 13. The main frame 21 is fixed on the inner side of the side plate 13, so that the internal structure of the Mini Led backlight module 100 is more stable, and the influence on the performance and the image quality of the liquid crystal display device 1000 caused by the dislocation of the internal structure of the Mini Led backlight module 100 due to factors such as transportation or shaking is avoided.

Referring to fig. 1, in an embodiment of the present invention, a side reflector 211 is disposed on one side of the main body frame 21 close to the Mini Led lamp bead 40.

The utility model provides an among the technical scheme, main body frame 21 is equipped with side reflector plate 211 on being close to one side of Mini Led lamp pearl 40. The image quality of the Mini Led television is related to the coverage rate of the reflection area, when the coverage rate of the reflection area in the Mini Led backlight module 100 is larger, light leakage and light absorption are less prone to occurring, the side reflection sheet 30 is arranged on one side, close to the Mini Led lamp bead 40, of the main body frame 21, light absorption of the main body frame 21 or light leakage from gaps between the main body frame 21 and the back plate 10 or the edge cover 23 can be avoided, light reflection is performed to improve the light output amount of the Mini Led backlight module 100, and therefore the image quality of the liquid crystal display device 1000 including the Mini Led television is improved.

Referring to fig. 1 and 2, in an embodiment of the present invention, the main body frame 21 is a white plastic frame.

The utility model provides an among the technical scheme of an embodiment, main body frame 21 is white plastic frame, compares with metal material integration center 20 such as aluminium frame, and plastic frame light in weight and manufacturing process are simple, can high-efficient batch production and reduction in production cost, also accord with the frivolous development trend of Mini Led liquid crystal display device 1000, and simultaneously, the plastic material has humidity resistance and corrosion resistance, even also difficult oxidation and receive the corruption in humid environment.

The color of the main body frame 21 is white or a light color close to white, because the color displayed by the main body frame 21 is the light reflected by the main body frame 21, when the color of the main body frame 21 is white, it can reflect all colors of light, when the color of the main body frame 21 is black, it can absorb all colors of light, and when the color of the main body frame 21 is other colors, such as red, it mainly reflects red light. When the color of the main body frame 21 is closer to white, the reflected light is more and the absorbed light is less, and the color of the main body frame 21 is designed to be white, so that the reflectivity of the main body frame 21 can be improved, the light output of the Mini Led backlight module 100 can be improved, and the image quality of the liquid crystal display device 1000 can be improved.

Referring to fig. 2, in an embodiment of the present invention, one side of the main body frame 21 close to the Mini Led lamp bead 40 is a high light surface 213.

The utility model provides an among the technical scheme of an embodiment, when main body frame 21 is white plastic frame, through injection molding processing, make into high plain noodles 213 with one side that main body frame 21 is close to Mini Led lamp pearl 40. The plastic frame is formed by injection molding of a mold. The side of the main body frame 21 close to the Mini Led lamp bead 40 in the mold is corresponding to the side, the surface of the side, close to the Mini Led lamp bead 40, of the main body frame 21 formed after injection molding is high in polishing surface, so that the high polishing surface 213 is formed, compared with a rough plane, the high polishing surface 213 is smoother and can reflect more light rays, the utilization rate of light rays emitted by the Mini Led lamp bead 40 is improved, the image quality of the liquid crystal display device 1000 is improved, the side reflecting sheet 211 originally required to be attached to the white plastic frame is replaced by the high polishing surface 213 of the white plastic frame, the use of the side reflecting sheet 30 can be reduced, and the production cost of the Mini Led backlight module 100 is reduced.

Referring to fig. 2 and 5, in an embodiment of the present invention, the side plate 13 is provided with one of a buckle 215 and a slot 131, one side of the main body frame 21 away from the Mini Led lamp bead 40 is provided with the other of the buckle 215 and the slot 131, and the buckle 215 is clipped into the slot 131 for fixing the main body frame 21 to the back plate 10.

The utility model relates to an among the technical scheme of an embodiment, main body frame 21 can follow the relative one side of backplate 10, and in backplate 10 was established to the cover, set up buckle 215 or draw-in groove 131 in the main body frame 21 outside, set up corresponding draw-in groove 131 or buckle 215 at curb plate 13 relevant position, when installing main body frame 21, only need press main body frame 21 in to backplate 10, can make buckle 215 card go into draw-in groove 131, accomplish the installation, improved the installation effectiveness of Mini Led backlight unit 100.

Referring to fig. 5, a plurality of sets of fasteners 215 extend from the outer side of the main frame 21, fixing holes are formed in the fasteners 215, a plurality of sets of slots 131 are formed in the outer side of the side plate 13, the fasteners 215 and the slots 131 are arranged in a one-to-one correspondence, when the main frame 21 is installed, the main frame 21 is pressed into the backboard 10, the fasteners 215 on the main frame 21 are clamped into the slots 131, wherein the fixing holes are fastened with the slots 131, and the main frame 21 and the backboard 10 are fixed.

Referring to fig. 1 to 4, in an embodiment of the present invention, the covered edge 23 includes a bottom edge 231 and a side edge 233, the side edge 233 is covered on the outer side of the side plate 13, the bottom edge 231 is located on the outer side of the bottom plate 11, a locking member 2311 is disposed on the bottom edge 231, a locking hole 111 is disposed on the bottom plate 11, and the locking member 2311 is inserted into the locking hole 111 for fixing the covered edge 23 to the back plate 10.

The utility model provides an among the technical scheme of an embodiment, bordure 23 and include base 231 and side 233, side 233 is used for cladding Mini Led backlight unit 100, avoids inner structure to expose in the air, receives environmental factor to influence its performance. The bottom edge 231 abuts against the bottom plate 11, and the bottom edge 231 is provided with a locking piece 2311, the locking piece 2311 can be used for locking a screw, a screw and the like, and the locking piece 2311 is not limited herein. Corresponding position is equipped with corresponding locking hole 111 on the bottom plate 11, inserts locking hole 111 with retaining member 2311 and locks, can be fixed with bordure 23 and backplate 10, and when needs maintenance, retaining member 2311 is torn out, can make bordure 23 and backplate 10 separation to maintain, make Mini Led backlight unit 100 possess detachability.

Referring to fig. 1 and 2, in an embodiment of the present invention, a sunken platform 217 is concavely disposed on an inner side of a top of the main body frame 21 for supporting the optical film 50.

The utility model provides an among the technical scheme of an embodiment, main body frame 21 top inboard is concave to be equipped with heavy platform 217, heavy platform 217 is used for installing optical film 50, light sends from Mini Led lamp pearl 40, through reflector plate 30, the reflection of side reflector plate 211 or highlight face 213 or penetrate directly and arrive optical film 50, optical film 50 can form the pointolite of Mini Led lamp pearl 40 and form the area source and provide liquid crystal display panel 200, optical film 50 sets up with bottom plate 11 relatively, heavy platform 217 can set to the volume that can install optical film 50 just, avoid installing optical film 50 back optical film 50 and take place to rock, influence the refracting index and the luminousness of Mini Led backlight unit 100, ensure the stability of Mini Led backlight unit 100 structure, improve liquid crystal display device 1000's stability.

Referring to fig. 1 and 2, in an embodiment of the present invention, the edge cover 23 further includes a top edge 235, the top edge 235 is disposed at an end of the edge cover 23 away from the back plate 10, and is opposite to the bottom edge 231, the top edge 235 is located above the sinking platform 217 for compressing the optical film 50 on the sinking platform 217.

The utility model provides an among the technical scheme, 23 of borduring still include topside 235, topside 235 and 50 butts of optics diaphragm, can compress tightly optics diaphragm 50 on heavy platform 217 from the outside, avoid optics diaphragm 50 to rock or influence liquid crystal display device 1000's image quality when taking place to rotate because of carrying liquid crystal display device 1000.

Referring to fig. 1 to fig. 5, the present invention further provides a liquid crystal display device 1000, wherein the liquid crystal display device 1000 includes the Mini Led backlight module 100, the specific structure of the Mini Led backlight module 100 refers to the above embodiments, and since the liquid crystal display device 1000 adopts all the technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are at least achieved, which is not repeated herein.

The LCD device 1000 further includes an LCD panel 200, wherein the LCD panel 200 is disposed outside the top edge 235.

In the technical solution of an embodiment of the present invention, the liquid crystal display device 1000 includes devices such as Mini Led tv, Mini Led screen and Mini Led commercial education machine, the colloid 210 such as cotton double faced adhesive tape of liquid crystal panel 200 accessible bubble is glued in the outside of topside 235, sets up with the optics diaphragm 50 relatively, also can set up corresponding mounting on the liquid crystal panel 200, thereby is fixed in the liquid crystal panel 200 on the topside 235, does not limit the fixed mode of the liquid crystal panel 200 here.

The liquid crystal panel 200 is operated by placing liquid crystal molecules between two parallel glass substrates, and fine electric wires are disposed between the two glass substrates and are distributed horizontally and vertically, so that the liquid crystal molecules are controlled to change direction by turning on or off the electric wires, and light emitted from the Mini Led backlight module 100 is refracted to generate a picture. Since the liquid crystal panel 200 does not emit light, the image quality of the liquid crystal display device 1000 is related to the luminous flux of the Mini Led backlight module 100, and the invention optimizes the preparation process of the middle frame 20 of the Mini Led backlight module 100 by improving the structure of the Mini Led backlight module 100 under the condition of not significantly influencing the image quality, reduces the manufacturing cost and the energy consumption, meets the purposes of energy conservation and emission reduction, and improves the production efficiency.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A Mini Led backlight module is characterized by comprising:

the backlight module comprises a back plate, wherein a reflecting sheet is arranged on the inner surface of the back plate, and a plurality of Mini Led lamp beads are arranged on the reflecting sheet;

the center, the center includes main body frame and bordures, main body frame encircles the setting and is in around the backplate, the cladding of borduring is in main body frame's the outside.

2. The Mini Led backlight module of claim 1, wherein the back plate comprises a bottom plate and a side plate surrounding the edge of the bottom plate, the main frame is disposed around the inner side of the side plate, and the wrapping edge covers the outer side of the side plate.

3. The Mini Led backlight module of claim 2, wherein a side reflector plate is disposed on one side of the main body frame near the Mini Led lamp bead.

4. The Mini Led backlight module of claim 2, wherein the main body frame is a white plastic frame.

5. The Mini Led backlight module of claim 4, wherein the side of the main body frame near the Mini Led lamp bead is a high light surface.

6. The Mini Led backlight module of claim 2, wherein the side plate has one of a buckle and a slot, and the other of the buckle and the slot is disposed on a side of the main frame away from the Mini Led lamp bead, and the buckle is engaged with the slot for fixing the main frame to the back plate.

7. The Mini Led backlight module as claimed in claim 2, wherein the edge-covering comprises a bottom edge and a side edge, the side edge covers the outer side of the side plate, the bottom edge is located at the outer side of the bottom plate, the bottom edge is provided with a locking member, the bottom plate is provided with a locking hole, and the locking member is inserted into the locking hole for fixing the edge-covering to the back plate.

8. The Mini Led backlight module of claim 7, wherein the top inner side of the main frame is recessed with a platform for supporting the optical film.

9. The Mini Led backlight module of claim 8, wherein the edge further comprises a top edge, the top edge is disposed at an end of the edge away from the back plate and opposite to the bottom edge, and the top edge is disposed above the platform for pressing the optical film thereon.

10. A liquid crystal display device, comprising the Mini Led backlight module according to any one of claims 1 to 9.