WO2017054649A1

WO2017054649A1 - Liquid crystal display apparatus module and manufacturing method therefor

Info

Publication number: WO2017054649A1
Application number: PCT/CN2016/099178
Authority: WO
Inventors: 余亚军; 曹谦; 姚键; 潘柏宇; 王冀
Original assignee: 合一智能科技（深圳）有限公司
Priority date: 2015-09-30
Filing date: 2016-09-18
Publication date: 2017-04-06
Also published as: CN105158953A; CN105158953B

Abstract

A liquid crystal display apparatus module and manufacturing method therefor, said module comprising a back-panel (10) and middle frame (20), wherein the back-panel (10) and middle frame (20) are both made from metal materials, the back-panel (10) has a flat, rectangular panel-like structure, the middle frame (20) has a rectangular frame structure, and with welding being used between the back-panel (10) and middle frame (20) so that the four borders of the middle frame (20) are fixed to the four edges of the back-panel (10). Said module is therefore ultra-thin, while no screws can be seen on the reverse side of the module, reducing the large quantity of screws used, thereby saving manpower, and making assembly quicker and more convenient, while also avoiding the problem and risk of screws rusting, or of light leaking from the reverse side of the liquid crystal display apparatus due to screws falling out.

Description

Module of liquid crystal display device and manufacturing method thereof

cross reference

The present application claims priority to Chinese Patent Application No. 201510639776.2, filed on Sep. 30, 2015, the entire content of

Technical field

The present invention relates to the field of liquid crystal display devices. In particular, the present invention relates to a module of a liquid crystal display device and a method of fabricating the same.

Background technique

As shown in FIG. 1 and FIG. 2, the module structure of the existing high-end ultra-thin liquid crystal television is substantially as follows: the back plate 1 is locked inwardly from the outside to the middle frame 2 by the screws 5, the back plate 1 and the middle frame 2, the two form a whole, and then the diaphragm group 3 of the diaphragm, the light guide plate, etc. is placed in the middle frame 2, the middle frame 2 carries a panel assembly (such as a glass plate, etc.) 6, and then the front shell 4 fixes the panel assembly 6 And fixed with the middle frame 2.

In addition, the existing design of the LCD TV uses a plastic middle frame and a metal back plate, so that it can only be fixed by a connection method such as a screw.

Since the conventional liquid crystal television generally uses a screw to fix the module in the liquid crystal display device as described above, it can be found from the back of the liquid crystal television that many screws are leaking and cannot be hidden. Such a screw-connected structure not only fails to satisfy the consumer's aesthetic requirements for the LCD TV, but also the screw head leakage is rusted and disassembled, resulting in unstable quality of the entire LCD TV.

Summary of the invention

Based on the above disadvantages of the prior art, an object of the present invention is to provide a module of a liquid crystal display device capable of realizing an ultra-thin module and being screw-free from the back side of the module. The aesthetic effect is also achieved; in addition, the use of a large number of screws can be reduced, thereby saving manpower, making assembly quicker and more convenient; and avoiding the problem and risk of rusting of the screw or light leakage on the back side of the liquid crystal display device caused by the screw falling behind.

Further, another object of the present invention is to provide a method of manufacturing a module of the above liquid crystal display device.

In order to achieve the above object, the present invention provides the following technical solutions.

A module of a liquid crystal display device, the module comprising a back plate and a middle frame, wherein the back plate and the middle frame are both made of a metal material, and the back plate is a flat rectangular plate structure, The middle frame is a rectangular frame structure, and four frames of the middle frame are fixed to the four edges of the back plate by welding between the back plate and the middle frame.

By adopting the above technical solution, the structural strength of the entire module can be increased compared with the prior art in which the middle frame is made of a material such as plastic, and at the same time, an ultra-thin module can be realized, and the use of the screw is eliminated. Various problems have improved the quality and stability of the liquid crystal display device.

Preferably, the module of the liquid crystal display device further includes a film set, and at least one lug protrusion is disposed on an opposite side of the side of the at least one frame of the frame structure of the middle frame to which the back plate is fixed. The lug protrusion protrudes toward the opposite side of the side of the middle frame on which the backboard is fixed, and the edge of the diaphragm group is provided with a through hole for positioning and mounting with the lug.

By adopting the above technical solution, the middle frame replaces the function of the back side wall of the prior art (that is, the side wall vertically protruding from the main surface at the four edges of the main surface of the back plate), and the middle frame has the right The function of positioning the diaphragm group facilitates the installation and positioning of the entire module.

Preferably, the lug protrusion extends along an extending direction of the frame on which the lug protrusion is disposed.

By adopting the above technical solution, the positioning function of the lug protrusion to the diaphragm group can be made more excellent.

In addition, preferably, the frame is formed with a recess, and the lug protrusion is disposed on the recess unit.

By adopting the above technical solution, in the case where the through hole of the diaphragm group is positioned on the lug protrusion of the middle frame, the overall thickness of the module does not increase due to the existence of the recessed portion, thereby further ensuring the module. Ultra-thin features.

Preferably, step portions are respectively disposed on both sides of the recessed portion of the frame, and the step portion is provided with a groove for setting the strip along the extending direction of the frame.

By adopting the above technical solution, the middle frame can easily carry the panel assembly through the rubber strip disposed in the groove, and the diaphragm can be effectively prevented by the rubber strip disposed on the groove traversing (crossing) both sides of the recessed portion The group falls off from the lugs of the lugs.

Preferably, each of the frames of the middle frame has a substantially "L"-shaped cross-sectional shape, and each of the frames includes a horizontal portion and a vertical portion that are substantially perpendicular to each other, and the vertical portion is from one end of the horizontal portion Stand up.

Preferably, the lower surface of the horizontal portion of each frame is welded to the backing plate.

Preferably, the groove is formed on an upper surface of the horizontal portion of each of the frames.

By adopting the above technical solution, the assembly of the module is further simplified while further ensuring the ultra-thin characteristics of the module.

Preferably, the lug protrusions are disposed on the three frames of the middle frame, and a plurality of the lug protrusions are disposed on one long frame, and at least one of the two short frames is disposed on the two frames. The mounting ear protrusions, wherein the number of the lug protrusions on the one long bezel is greater than the number of the lug protrusions on the single short bezel.

By adopting the above technical solution, even if the liquid crystal display device has an oversized size, the diaphragm group can be well positioned in the middle frame, and the positioning requirement in the module installation process can be better realized.

Preferably, the metal material of the backboard is an aluminum composite panel and/or the metal material of the middle frame is an aluminum alloy.

By adopting the above technical solution, the strength of the entire module can be further enhanced, and the backplane can be ensured. Excellent weldability between the middle frames and reduces the thickness of the entire module.

The present invention also provides a method of manufacturing a module of a liquid crystal display device, wherein the module of the liquid crystal display device is a module of the liquid crystal display device according to any one of the above aspects, wherein the manufacturing method includes The following steps: positioning the backboard and the middle frame in the jig such that four borders of the frame structure of the middle frame correspond to four edges of the backboard; and in the middle frame The middle frame and the back plate are fixed together by welding between the back plate and the back plate.

By adopting the above technical solution, the object of the present invention can be better achieved, so that the manufactured module can increase the structural strength of the entire module compared with the prior art, and at the same time, realize an ultra-thin module, and eliminate the The quality and stability of the liquid crystal display device are improved due to various problems caused by the use of screws.

Preferably, the welded portion between the middle frame and the back plate includes a plurality of solder joints, a plurality of welding wires or a continuous one of the bonding wires arranged in the extending direction of the frame of the middle frame.

By adopting the above technical solution, the structure of the welded portion can be flexibly set, and according to different welding structures, the module has sufficient joint strength under different conditions.

Preferably, the manufacturing method further comprises the step of pre-fixing between the middle frame and the backing plate after the positioning step and before the welding step. The pre-fixing includes, for example, pre-bonding the middle frame and the backing plate with glue.

By adopting the above technical solution, the positioning between the middle frame and the back plate can be ensured before the welding is performed, and the undesired displacement between the middle frame and the back plate during the welding process is prevented.

Preferably, the manufacturing scheme further includes positioning the diaphragm group by positioning a through hole at an edge of the diaphragm group of the module to a lug protrusion disposed on at least one frame of the middle frame Install into the steps in the box.

By adopting the above technical solution, the middle frame can make a good positioning of the diaphragm group.

Preferably, the welding is performed from the side of the backing plate in the welding step.

By adopting the above technical solution, welding can be conveniently performed.

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 is a schematic exploded perspective view showing a partial structure of a module of a related art liquid crystal display device;

2 is a schematic exploded perspective view showing a module of a related art liquid crystal display device;

3A is a schematic exploded perspective view showing a module of a liquid crystal display device according to an embodiment of the present invention, and FIG. 3B is a partially enlarged view of a region A in FIG. 3A;

4 is a schematic perspective view showing a partial structure of a middle frame and a back plate in a module of a liquid crystal display device according to an embodiment of the present invention;

Figure 5 is a schematic perspective view showing the lug projection on the middle frame;

Fig. 6 is a schematic perspective view showing a lug projection in which a diaphragm group is positioned at a middle frame.

List of reference signs

1, 10 back plate 2, 20 middle frame 3, 30 diaphragm group 4, 40 front shell

5 Screw 50 Welding part 6, 60 panel assembly 101 Horizontal part

102 vertical part 200 recessed part 201 lug protrusion 202 groove

203 step 301 through hole R strip

detailed description

Various exemplary embodiments, features, and aspects of the invention are described in detail below with reference to the drawings. The same reference numerals in the drawings denote the same or similar elements. Although the various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or preferred.

In addition, numerous specific details are set forth in the Detailed Description of the invention in the Detailed Description. Those skilled in the art will appreciate that the invention may be practiced without some specific details. In other instances, well-known methods, means, components, and circuits are not described in detail to facilitate the invention. Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

(First embodiment)

As shown in FIG. 3A and FIG. 3B, the module of the liquid crystal display device according to the first embodiment of the present invention has a rectangular structure as a whole, and includes a back plate 10, a middle frame 20, a diaphragm group 30, and a panel which are assembled to each other. Assembly 60 and front case 40. Among them, the main improvement of the present invention lies in the back plate 10 and the middle frame 20, and the following mainly describes the back plate 10 and the middle frame 20.

In the present embodiment, the back sheet 10 and the middle frame 20 are made of different metal materials in terms of materials. Preferably, the back plate 10 is made of aluminum composite plate, that is, aluminum composite material (ACM); and the middle frame 20 is made of aluminum alloy material to meet the strength requirement of the middle frame.

In the present embodiment, in terms of structure, as shown in FIG. 3A and FIG. 3B, the back plate 10 is a flat rectangular plate-like structure, and flat means that both main faces of the rectangular plate-like structure have no irregularities; the middle frame 20 is The four frames are connected end to end in a rectangular frame structure, and the frame structure of the middle frame 20 corresponds to the plate-like structure of the back plate 10 in structure and size. As shown in FIGS. 4 and 5, each of the frames of the middle frame 20 has a substantially "L"-shaped cross-sectional shape, and each of the frames includes a horizontal portion 101 and a vertical portion 102 that are substantially perpendicular to each other, and the vertical portion 102 is from the horizontal portion. One end of the 101 protrudes upward.

Further, in the present embodiment, the frame structure composed of the four frames of the middle frame 20 is fixed to the four edges of the back plate 10 by welding between the back plate 10 and the middle frame 20. In the present embodiment, the welded portion 50 is a plurality of solder joints arranged along the four edges of the back plate 10 (ie, the four frame extending directions of the middle frame 20). Fig. 4 is a schematic perspective view showing a partial structure of the middle frame 20 and the back plate 10 after being fixed by the above-described welding.

In addition, in the present embodiment, on a long frame of the frame structure of the middle frame 20, A plurality of (e.g., five or six) lug projections 201 are disposed on opposite sides of the side on which the backing plate 10 is fixed. As shown in FIG. 5, the lug protrusion 201 protrudes to a side opposite to the side of the middle frame 20 on which the fixed back plate 10 is fixed by a predetermined length, which is preferably equal to or greater than the overall thickness of the diaphragm group 30. Moreover, a through hole 301 for positioning and mounting with the lug protrusion 201 is provided at the edge of the diaphragm group 30. In the present embodiment, the number of the through holes 301 is equal to the number of the lug protrusions 201, and the size of each of the through holes 301 matches the size of the lug protrusions 201. Thus, the middle frame 20 actually replaces the side walls of the backing plate of the prior art to position the diaphragm set.

In addition, the bezel is provided with a recessed portion 200, and the lug protrusion 201 is disposed on the recessed portion 200, so that the edge portion of the diaphragm group 30 having the through hole 301 is correspondingly mounted to the recessed portion 200 as shown in FIG. After the through hole 301 and the lug protrusion 201 are positioned and mounted, the thickness of the entire module is not increased.

In addition, as shown in FIG. 5, the lug protrusion 201 has an oblong cross-sectional shape, and the longitudinal direction of the oblong shape of the lug protrusion 201 is an extending direction of the frame on which the lug protrusion 201 is disposed. 6 shows a schematic view of the patch set 30 positioned and mounted on the lug protrusion 201, wherein when the diaphragm group 30 is positioned and mounted on the middle frame 20, the lug protrusion 201 is inserted through the edge of the diaphragm group 30. The aperture 301 allows the diaphragm assembly 30 to be positioned through the lug projection 201.

In addition, as shown in FIG. 5, in the extending direction of the frame, the frame is respectively provided with a step on both sides of each of the lug protrusions 201 and a portion away from the lug protrusion 201 (ie, both sides of the recessed portion 200). The portion 203 may be provided with a groove 202 for mounting the strip R on the step portion 203 of the frame. The strip R is preferably made of plastic. After the strips R are all mounted on the recess 202, the strip R extends over the length of each bezel and over the lug protrusion 201, which prevents the diaphragm set 30 from undesirably from the lug protrusion 201. At the same time, each strip R also integrally forms a structure geometrically similar to the frame structure of the middle frame 20, thereby enabling the middle frame 20 to support the panel assembly through the strip R.

Further, in the present embodiment, as described above, the cross-section of each of the frames of the middle frame 20 is substantially "L"-shaped, and the lower surface of the horizontal portion 101 of each frame is welded to the back plate 10, and the groove 202 It is formed on the upper surface of the horizontal portion 101. In the present embodiment, as shown in FIGS. 4 and 5, the groove 202 does not extend to the vertical portion 102 in the width direction of the bezel, thereby creating a stepped structure between the vertical portion 102 and the groove 202. Of course, in other embodiments, the groove 202 can be extended to the vertical portion 102, i.e., with the vertical portion 102 as one side wall of the groove 202.

(Second embodiment)

In the second embodiment, in order to further increase the strength of the entire module, the back plate 10 and the middle frame 20 are made of the same metal, that is, made of an aluminum alloy. Except for the above differences, the module of the second embodiment of the present invention is identical in structure to the module of the first embodiment, and therefore will not be described herein.

(Third embodiment)

In the third embodiment, in order to ensure stable connection and high strength between the back plate 10 and the middle frame 20, the welded portion 50 between the back plate 10 and the middle frame 20 adopts intermittent multi-segment welding wires or a continuous one. Welding wire. Except for the above differences, the module of the third embodiment of the present invention is identical in structure to the module of the first embodiment, and therefore will not be described herein.

(Fourth embodiment)

In the first embodiment described above, the lug protrusions 201 are provided only on one long frame of the frame structure of the middle frame 20.

In the fourth embodiment, the lug protrusions 201 are provided on at least two of the four frames of the rectangular frame of the middle frame 20. Preferably, the lug protrusions 201 are disposed on the three frames, wherein a plurality of lug protrusions 201 are disposed on one long frame, and at least one lug protrusions are disposed on the two short frames, one of which is long The number of the lug protrusions 201 on the bezel is greater than the number of lug protrusions 201 on the single short bezel. For example, in the case where the size of the liquid crystal display device is 55 inches, five or six lug protrusions 201 are provided on one long bezel, and two or three lug protrusions 201 are provided on each short bezel. .

The module of the fourth embodiment of the present invention is the same as the module of the first embodiment except for the above differences, and therefore will not be described herein.

The module of the liquid crystal display device of the specific embodiments of the present invention has been described above. In addition, the present invention also provides a method of manufacturing a module of the above liquid crystal display device, the method comprising the steps of: positioning the back plate 10 and the middle frame 20 in the jig such that the frame structure of the middle frame 20 is four One The frame corresponds to the four edges of the backboard 10, and the above operation in the jig facilitates the precise positioning of the positional relationship between the middle frame 20 and the backboard 10; and the middle between the middle frame 20 and the backboard 10 by welding The frame 20 and the backing plate 10 are fixed together.

Between the positioning step and the welding step, a pre-fixing between the middle frame 20 and the backing plate 10 can also be performed to prevent undesired displacement between the middle frame 20 and the backing plate 10 in the subsequent welding step.

The manufacturing method may further include the step of positioning the diaphragm group 30 in the middle frame 20 by positioning the through hole 301 of the diaphragm group 30 to the lug protrusion 201 of the middle frame 20, and/or having the panel assembly 60 The step of bonding the rubber strip provided on the step portion 203 of the middle frame 20 and/or the step of fixing the front case 40 to the panel assembly 60 and the middle frame 20 is performed.

In addition, the welded portion 50 between the middle frame 20 and the back plate 10 may include a plurality of solder joints, intermittent multi-segment weld lines or a continuous one of the weld lines arranged in the extending direction of the respective frames of the middle frame 20. This corresponds to the structure of the welded portion 50 described in the above various embodiments, and can be applied to many different cases.

The above pre-fixing includes a method of pre-bonding the center frame 20 and the back sheet 10 with a glue, and the above-mentioned glue is preferably a double-sided tape.

In addition, what needs to be further explained is:

(1) The liquid crystal display device of the present invention includes, but is not limited to, a liquid crystal television, a computer display, etc., and may be various liquid crystal displays which are applied in other fields.

(2) The diaphragm group 30 of the present invention includes a diaphragm, a light guide plate, a backlight plate, and the like. Of course, different numbers and types of diaphragms may be provided depending on the liquid crystal display device.

(3) In the present invention, the metal material from which the back sheet 10 is formed is not limited to a metal material such as an aluminum alloy which is generally understood, and also includes an aluminum-plastic board, that is, an aluminum composite material.

(4) The number of the through holes 301 of the present invention is not limited to the case where the number of the lug protrusions 201 in the above embodiment is equal, and the number of the through holes 301 may be smaller than the number of the lug protrusions 201.

(5) The sectional shape of the lug protrusion 201 of the present invention is not limited to the oblong shape in the above embodiment. The shape may also be other shapes including a rectangle or the like.

(6) The number and the location of the lug protrusions 201 of the present invention are not limited to those described in the above embodiments, and the number of the lug protrusions 201 on each of the frames may be appropriately changed according to actual conditions. A lug protrusion 201 is disposed on two opposite frames or a lug protrusion 201 is disposed on two adjacent frames.

By adopting the above technical solution, the present invention provides a module of a liquid crystal display device, which can realize an ultra-thin module and can realize the effect of no screwing from the back side of the module; and can reduce the use of a large number of screws This saves manpower and makes assembly quicker and more convenient; it also avoids the problem and risk of rusting of the screw or light leakage on the back side of the liquid crystal display device caused by the screw falling behind. Further, the present invention provides a method of manufacturing a module of the above liquid crystal display device.

It should be noted that the scope of the present invention is not limited to the specific embodiments of the above specific embodiments, and the respective embodiments may be combined as appropriate, and the combination of the features of the claims of the present invention falls within the scope of the present invention. Within the scope of protection.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Practicality

The module of the liquid crystal display device according to the embodiment of the present invention can increase the structural strength of the entire module compared with the prior art in which the middle frame is made of a material such as plastic, and can realize an ultra-thin module. Various problems due to the use of screws are eliminated, and the quality and stability of the liquid crystal display device are improved.

Claims

A module of a liquid crystal display device, the module comprising a back plate (10) and a middle frame (20), wherein

The back plate (10) and the middle frame (20) are both made of a metal material.

The back plate (10) is a flat rectangular plate-like structure, and the middle frame (20) is a rectangular frame structure.

Four frames of the middle frame (20) are fixed to the four edges of the back plate (10) by welding between the back plate (10) and the middle frame (20).
The module of the liquid crystal display device according to claim 1, wherein the module further comprises a diaphragm group (30),

Providing at least one lug protrusion (201) on the opposite side of the side of the at least one frame of the frame structure of the middle frame (20) to which the back plate (10) is fixed, the lug protrusion ( 201) protruding toward the opposite side of the side of the middle frame (20) where the back plate (10) is fixed, and

A through hole (301) for positioning and mounting with the lug protrusion (201) is disposed at an edge of the diaphragm group (30).
A module of a liquid crystal display device according to claim 2, wherein

The lug protrusion (201) extends along an extending direction of the frame on which the lug protrusion (201) is disposed.
A module for a liquid crystal display device according to claim 3, wherein

The frame is formed with a recess (200), and the lug protrusion (201) is disposed at the recess (200).
A module of a liquid crystal display device according to any one of claims 2 to 4, wherein

The lug protrusions (201) are disposed on the three frames of the middle frame (20), and a plurality of the lug protrusions (201) are disposed on one long bezel, on the two short frames. At least one of the lug protrusions (201) is disposed, wherein the number of lug protrusions (201) on the one long bezel is large The number of lugs (201) on a single short bezel.
A module of a liquid crystal display device according to any one of claims 1 to 4, wherein

The metal material of the backboard (10) is an aluminum composite panel; and/or

The metal material of the middle frame (20) is an aluminum alloy.
A method of manufacturing a module of a liquid crystal display device, characterized in that the module of the liquid crystal display device is a module of the liquid crystal display device according to any one of claims 1 to 6, the manufacturing method comprising the following step:

Positioning the back plate (10) and the middle frame (20) in the jig such that the four frames of the frame structure of the middle frame (20) correspond to the four of the back plate (10) Edges;

The middle frame (20) and the back plate (10) are fixed together by welding between the middle frame (20) and the back plate (10).
A method of manufacturing a module of a liquid crystal display device according to claim 7, wherein

The welding portion (50) between the middle frame (20) and the back plate (10) includes a plurality of solder joints, a plurality of welding wires or a plurality of welding wires arranged in an extending direction of each frame of the middle frame (20) A continuous wire bond.
The method of manufacturing a module of a liquid crystal display device according to claim 7 or 8, wherein the manufacturing method is further included in the middle frame (20) and the back plate after the positioning step and before the soldering step (10) A step of pre-fixing between.
The method of manufacturing a module of a liquid crystal display device according to claim 7 or 8, wherein the manufacturing method further comprises: passing a through hole (301) at an edge of the diaphragm group (30) of the module. a step of positioning the patch set (30) in the middle frame (20) by positioning a lug protrusion (201) provided on at least one of the frames of the middle frame (20).