WO2014134838A1

WO2014134838A1 - Large-size backlight module backplate and splicing structure thereof

Info

Publication number: WO2014134838A1
Application number: PCT/CN2013/072483
Authority: WO
Inventors: 郭仪正; 萧宇均; 张彦学
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2013-03-07
Filing date: 2013-03-12
Publication date: 2014-09-12
Also published as: CN203298215U

Abstract

A splicing structure of a backplate (10); a side edge (111) spliced by two sub-backplates (100, 200) is provided with a complementary splicing structure (120) comprising a first splicing portion (130) arranged on half of the side edge of the sub-backplate, and a second splicing portion (140) correspondingly arranged on the other half and complementary to the first splicing portion. Also disclosed is a large-size backlight module backplate spliced by two sub-backplates having the same structure and provided with an integrally formed complementary splicing structure. The sub-backplates have the same structure, thus improving the mass production performance of large-size backplates, reducing the number of molds, and lowering costs of large-size liquid crystal modules.

Description

Large-size backlight module backboard and splicing structure thereof

The utility model belongs to the field of liquid crystal display, in particular to a large-size backlight module backboard and its spelling

Background technique

As the size of the liquid crystal panel continues to increase, the size of other parts of the backlight module as its light source system also increases. The existing large-size backboard mainly adopts a multi-segment flat splicing method or a plurality of sets of mold cold-rolled sheets or aluminum sheets stamping to form a complete back sheet. However, due to the low mass production and high cost of the flat panel splicing method, the stamping of multiple sets of molds is constrained by the large size, large quantity, long production cycle and high risk of mold opening, which leads to high cost of large-size liquid crystal modules. One of the bottlenecks in the development of size LCDs.

1 is a schematic view of a splicing structure of a back panel of a large-size backlight module in the prior art, wherein the back panel 1 is formed by splicing three vertical panels 2 through four upper and lower connector members 3, thereby showing the number of splicing Many, there are many mold opening, not only complicated assembly, but also expensive.

Therefore, it is necessary to design a large-size backlight module backplane splicing structure to overcome the defects of a large number of backplane splicing, low productivity, large number of mold opening, complicated assembly, and high cost.

Utility model content

The purpose of the utility model is to provide a large-size backlight module backboard and a splicing structure thereof, which solves the problems of low productivity and large number of molds in the production process of large-size backboard splicing, thereby causing excessive cost.

In order to achieve the above object, the present invention provides a splicing structure of a back panel of a large-sized backlight module, wherein the back panel is formed by splicing and fixing two sub-back boards, and the two sub-back boards are spliced. The side is provided with a complementary splicing structure, the splicing structure includes: a first splicing portion is disposed on one side of the side of the sub-back panel, and a second splicing portion complementary to the first splicing portion is disposed on the other half. The first splicing portion is formed by extending outwardly from the bottom end of the side; the first splicing portion is overlapped and fitted to the second splicing portion of the spliced another sub-backboard, and the second splicing portion is overlapped and overlapped with another splicing The first splicing portion of the sub-back plate. Preferably, the first joint portion and the surface of the sub-back plate are connected in a stepped manner, and the height of the step is equivalent to the thickness of the sub-back plate.

Preferably, the surface of the second splice is flush with the surface of the sub-backboard.

Preferably, the first splicing portion is bent and connected to the bottom end of the side, the side half is provided with a first bending portion that is obliquely downward and a first splicing portion that is connected to the first bending portion, and A joint portion is bent in a "several" shape.

Preferably, the second splice portion is disposed on the other half of the side, and is connected to the second bent portion which is obliquely downward on the sub-back plate and the second splice portion has a "several" shape matching the structure of the first splice portion.

Preferably, the bending height of the first bending portion is greater than the bending height of the second bending portion by a thickness of the sub-back panel.

Preferably, the first splice portion and the second splice portion are correspondingly provided with a splicing hole, and the splicing hole opening on the second splicing portion is a counterbore structure.

Preferably, the first joint portion and the second joint portion are fixedly connected by a rivet or a screw. Preferably, the first joint portion, the second joint portion and the sub-back plate are integrally formed.

Another object of the present invention is to provide a large-size backlight module backplane, wherein the backlight module backplane is formed by two identical sub-backboards spliced and fixedly connected, and the two backs are formed. The side of the splicing of the board is provided with a complementary splicing structure, and the splicing structure comprises:

a first splicing portion disposed at a half of a side of the sub-backboard, and a second splicing portion corresponding to the first splicing portion, wherein the first splicing portion is formed by extending outwardly at a bottom end of the side; The first splicing portion is overlapped and fitted to the second splicing portion of the spliced another sub-back plate, and the second splicing portion is overlapped and overlapped on the first splicing portion of the spliced another sub-back plate. The present invention further provides a backlight module, comprising: a light guide plate, and a back plate disposed on a back surface of the light guide plate, wherein the back plate is formed by two identical sub-back plates spliced and fixedly connected, The side edges of the two sub-backboards are provided with complementary splicing structures, and the splicing structure includes:

a first splicing portion disposed at a half of a side of the sub-backboard, and a second splicing portion corresponding to the first splicing portion, wherein the first splicing portion is formed by extending outwardly at a bottom end of the side; The first splicing portion is overlapped and fitted to the second splicing portion of the spliced another sub-back plate, and the second splicing portion is overlapped and overlapped on the first splicing portion of the spliced another sub-back plate. Preferably, the splicing manner of the backboard is symmetrical.

Advantageous Effects: The large-size backlight module back plate and the splicing structure thereof provided by the utility model adopt two sub-back boards with the same structure, and a complementary splicing structure integrally formed on the sub-back board is adopted, After the board is turned to the direction, the two sub-back boards are complementarily spliced to form a large-sized back board. Since the sub-backboard has the same structure and simple splicing structure, the mass production performance of the large-sized backplane is improved, and the number of molds can be greatly reduced, thereby reducing the cost of the large-size liquid crystal module and meeting the development demand of the large-size liquid crystal display.

DRAWINGS

FIG. 1 is a prior art large-size backplane splicing structure design.

2 is a schematic view of a splicing backboard according to Embodiment 1 of the present invention.

3 is a schematic structural view of a sub-backboard according to Embodiment 1 of the present invention.

Figure 4 is a partial cross-sectional view taken along line A-A of Figure 2;

Figure 5 is a schematic view of a splicing backboard according to Embodiment 2 of the present invention.

Figure 6 is a schematic view showing the structure of a sub-backboard according to Embodiment 2 of the present invention.

Figure 7 is a partial cross-sectional view taken along line B-B of Figure 6; 8 is a schematic diagram of a backlight module according to Embodiment 1 or Embodiment 2 of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS In order to better explain the technical features and the structure of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Specific embodiments of the invention are defined. As shown in FIG. 8 , the backlight module 1 includes a light guide plate 20 and a back plate 10 disposed on the back surface of the light guide plate 20 . The improvement of the backlight module 1 of the present invention mainly lies in the manner in which the back plate 10 is spliced, and the back plate 10 It consists of two sub-backplanes with the same structure and simple structure. The structure of the sub-backplane will be described in detail below. Embodiment 1 As shown in FIG. 2 to FIG. 4 , the back board 10 is formed by splicing the first sub-back board 100 and the second sub-back board 200 having the same size and shape, because the first sub-back board and the second sub-back board structure are configured. Same, the following only discusses the first The structure of the sub-backboard. The first sub-backplane 100 is composed of an upper and lower frame, a left frame, and a flat plate 110. The upper and lower frames and the left frame are sequentially connected to the upper and lower sides and the left side of the flat plate 110. The side 111 of the embodiment refers to the right side of the flat plate 110. The side is on the side, but not limited to this. The splicing structure 120 includes a first splicing portion 130 and a second splicing portion 140 complementary to the first splicing portion 130. The first splicing portion 130 and the second splicing portion 140 are juxtaposed on the side edges 111. The first splicing portion 130 is a protruding block formed in a stepped shape with the flat plate 110 extending horizontally outward from the bottom end of the side edge 111, and the second splicing portion 140 is a part of the flat plate 110. Similarly, the structure of the second sub-backplane 200 is also as described above. During the splicing, the second sub-backplane 200 is turned in the opposite direction, and the splicing structure of the first sub-backplane 100 and the second sub-backplane 200 are overlapped and overlapped. Since the two sub-backplanes have the same structure and the splicing structure is a complementary structure, the first splicing portion 130 of the first sub-backplane 100 and the second splicing portion (not shown) of the second sub-backplane 200 overlap correspondingly. The first splicing portion 230 of the second sub-backplane 200 is correspondingly overlapped with the second splicing portion 140 of the first sub-backplane 100, and the first splicing portion 130 and the second splicing portion (not shown) The splicing hole 300 is correspondingly opened, and the first splicing portion and the second splicing portion are fixed together by screws to splicing the first sub-back plate 100 and the second sub-back plate 200 together. At the same time, in order to make it easier to assemble the first sub-backplane 100 and the second sub-backplane 200, the first splicing portion 130 and the upper side of the flat plate 110, the second splicing portion 140 and the lower side of the flat plate 110 are provided with a gap. Convenient for assembly and alignment. Preferably, the opening of the splicing hole 300 on the second splicing portion 140 is a counterbore structure, which can make the splicing portion of the backboard 10 flat, and improve the appearance of the backboard 10. In addition, the flat plate 110 is designed to be vertically symmetrical. When the second sub-backplane 200 is spliced with the first sub-backplane 100, the structure of the spliced large-sized backplane 10 can be unified. In particular, as shown in FIG. 4, the second splicing portion 140 on the first sub-backplane 100 is a part of the flat plate 110, and the first splicing portion 230 on the second sub-backplane 200 is stepped with the flat plate 210. The height of the step is equal to the thickness of the sub-backboard, so that the first splicing portion and the second splicing portion can be misaligned and overlapped, so that the first sub-backplane 100 and the second sub-backboard 200 can be spliced together. The plane is spliced into a flat, large-sized back panel. In order to meet the splicing strength of the backboard 10, as shown in FIG. 2, the first splicing portion 130 and the second splicing portion 140 are arranged on the left and right sides of the side edge 111 instead of the same line. Therefore, when splicing, the splicing parts are not on the same line, and the splicing strength of the back board 10 is strengthened. Based on the splicing structure of the large-size backlight module back plate provided above, the sub-back plate and the splicing structure thereof can be punched out by an integral molding process to further simplify the structure and reduce the cost. Different from the prior art, since the sub-back boards have the same structure, the two sub-back boards are riveted together by riveting dies to form a complete back. The board can be opened with a pair of molds, further reducing the cost of the mold, and the assembly is convenient and the structure is firm. Embodiment 2 Referring to FIG. 5 to FIG. 7 , the splicing structure of Embodiment 2 is similar to the splicing structure in Embodiment 1, and therefore the same component symbols and names are used, but the difference is as follows: FIG. 6 and FIG. As shown in FIG. 7, the first splice portion 130 and the second splice portion 140 of the present embodiment are bent in a "several" shape as compared with the first splice portion 130 and the second splice portion 140 which are planar in the first embodiment. In the embodiment, the side 111 is provided with a downwardly facing first bent portion 150. The first joint portion 130 is connected to the first bent portion 150, and the second joint portion 140 is disposed on the other half of the side edge 110. The second joint portion 160 is obliquely downwardly connected to the flat plate 110 and the second joint portion 140 has a "several" shape matching the structure of the first joint portion 130. Similarly, when splicing, the second sub-backplane 200 is turned in a direction, and the splicing structure of the first sub-backplane 100 and the second sub-backplane 200 are overlapped and overlapped. Since the two sub-backplanes have the same structure and the splicing structure is a complementary structure, the first splicing portion 130 of the first sub-backplane 100 and the second splicing portion (not shown) of the second sub-backplane 200 overlap correspondingly. The second splicing portion 140 of the first sub-backplane 100 and the first splicing portion 230 of the second sub-backplane 200 are overlapped and overlapped. At the same time, the first splicing portion 130 and the second splicing portion 140 are correspondingly provided with the splicing holes 300, and the first splicing portion and the second splicing portion are fixed together by screws to thereby connect the first sub-back plate 100 and the second sub-back plate 200 stitched together. Meanwhile, in order to splicing the first sub-backplane 100 and the second sub-backboard 200, the splicing portion and the flat plate 110 (210) can be in the same horizontal plane, and the side 111 is provided with a first downwardly bent portion 150 and a first Two bent portions 160, and the surface of the second joint portion 140 is flush with the surface of the flat plate 110, and the height of the first bent portion 150 bent downward is larger than the downward bent height of the second bent portion 160. The thickness, that is, the height at which the first bent portion 250 of the second sub-back panel 200 is bent downward is greater than the downwardly bent height of the second bent portion 160 of the first sub-back panel 100 by one material thickness. In particular, as shown in FIG. 7, the first splicing portion 230 of the second sub-backplane 200 and the second splicing portion 140 of the first sub-backplane 100 in this embodiment are bent in a "several" shape. When the two are overlapped and overlapped, they can be mutually fixed by relying on their own structure in the horizontal direction, and the splicing strength is better. Based on the splicing structure of the large-size backlight module backplane, the present invention also provides a large-size backlight module backplane 10 and a backlight module 1 thereof, wherein the backplane 10 is in the above embodiment. The splicing structure 120 of the large-size backlight module backboard of any one of the above is formed by splicing two sub-back boards of the same structure to reduce the number of molds and reduce the cost. Compared with the splicing manner of the large-size backlight module backboard in the prior art, the utility model provides A large-size backlight module backboard and a splicing structure thereof, adopting two sub-back boards with the same structure, and providing a complementary complementary splicing structure on the sub-back board, and realizing two by turning a sub-back board The block back plates are complementarily spliced to form the desired large size back plate. Since the sub-backboard has the same structure and simple splicing structure, the mass production performance of the large-size backboard is improved, and the number of molds can be greatly reduced, thereby reducing the cost of the large-size liquid crystal module and meeting the development demand of the large-size liquid crystal display. While the invention has been particularly shown and described with reference to the exemplary embodiments of the embodiments of the invention It carries out various changes in form and detail.

Claims

Claim

A splicing structure of a back panel of a large-sized backlight module, wherein the back panel is formed by splicing and fixing two sub-back boards, and the side edges of the two sub-back boards are provided with complementary splicing. The splicing structure includes: a first splicing portion is disposed on a half of a side of the sub-backboard, and a second splicing portion is formed on the other side of the sub-back panel, and the first splicing portion is a side The bottom end is extended outwardly; the first splicing portion is overlapped and fitted to the second splicing portion of the spliced another sub-back plate, and the second splicing portion is overlapped and overlapped with the first splicing of the spliced another sub-back plate Ministry.

2. The splicing structure according to claim 1, wherein the first splicing portion is connected in a stepped manner to the surface of the sub-back plate, and the step height is equivalent to the thickness of the sub-back plate.

3. The splicing structure according to claim 1, wherein the surface of the second splicing portion is flush with the surface of the sub-back plate.

The splicing structure according to claim 1, wherein the first splicing portion is bent and connected to the bottom end of the side, and the side half is provided with a first bent portion that is obliquely downward and is connected to The first joint portion of the first bent portion, and the first joint portion is bent in a "several" shape.

The splicing structure according to claim 3, wherein the second splicing portion is disposed on the other half of the side, and is connected to the second bent portion that is obliquely downward on the sub-back plate and the second splicing portion is A splice structure matches the "several" shape.

The splicing structure according to claim 5, wherein the first bending portion has a bending height that is greater than a bending height of the second bending portion by a thickness of the sub-back panel.

The splicing structure according to any one of the preceding claims, wherein the first splicing second splicing portion is correspondingly provided with a splicing hole, and the splicing hole opening at the second splicing portion is a counterbore

The splicing structure according to claim 7, wherein the first splicing portion and the second splicing portion are fixedly connected by a rivet or a screw.

The splicing structure according to claim 1, wherein the first splicing portion, the first The second joint portion and the sub-back plate are integrally formed.

10 . A large-size backlight module backplane, wherein the backplane is formed by two identical sub-backboards spliced and fixedly connected, and the side of the two sub-backboards is provided with a complementary splicing structure. The splicing structure includes:

a first splicing portion disposed at a half of a side of the sub-backboard, and a second splicing portion corresponding to the first splicing portion, wherein the first splicing portion is formed by extending outwardly at a bottom end of the side; The first splicing portion is overlapped and fitted to the second splicing portion of the spliced another sub-back plate, and the second splicing portion is overlapped and overlapped on the first splicing portion of the spliced another sub-back plate.

The backing plate according to claim 10, wherein the first splicing portion is connected to the surface of the sub-back plate in a stepped manner, and the step height is equivalent to the thickness of the sub-back plate.

The back sheet according to claim 10, wherein the surface of the second joint portion is flush with the surface of the back sheet.

The back plate according to claim 10, wherein the first joint portion is bent and connected to the bottom end of the side, and the side half is provided with a first bent portion that is obliquely downward and is connected to The first joint portion of the first bent portion, and the first joint portion is bent in a "several" shape.

The backing plate according to claim 10, wherein the second splice portion is disposed on the other half of the side, and is connected to the second bent portion that is obliquely downward on the sub-back plate and the second splice portion is A splice structure matches the "several" shape.

The backing plate according to claim 14, wherein the first bending portion has a bending height that is greater than a bending height of the second bending portion by a thickness of the sub-back panel.

The backplane according to claim 15, wherein the first splice portion and the second splice portion are correspondingly provided with a splicing hole, and the splicing hole opening at the second splicing portion is a counterbore structure.

The back plate according to claim 16, wherein the first joint portion and the first joint portion are fixedly connected by a rivet or a screw.

The backing plate according to claim 10, wherein the first splicing portion, the first splicing portion and the sub-back plate are integrally formed.

A large-size backlight module, comprising: a light guide plate, and a back plate disposed on a back surface of the light guide plate, wherein the back plate is formed by two identical sub-back plates spliced and fixedly connected, the two Piece The side of the sub-back panel is provided with a complementary splicing structure, and the splicing structure includes:

The backlight module according to claim 19, wherein the splicing mode of the backboard is symmetrical.