Backlight unit structure

Abstract

The backlight unit structure comprises a metal plate middle frame and a BL die casting, the metal plate middle frame comprises a plane frame body, and the three side edges of the plane frame body are each provided with a sliding-in type buckle and an L-shaped connecting block; the three side edges of the BL die casting are each provided with a clamping groove and a sinking groove. And the fourth side edge of the plane frame body is fixedly connected with the fourth side edge of the BL die casting. According to the backlight unit structure, a traditional plastic middle frame is replaced with the metal plate middle frame, then a double-fixing structure is arranged between the metal plate middle frame and the BL die casting, and the three side edges are fixed through cooperation of the sliding-in type buckles and the clamping grooves; the three side edges are further fixedly connected through L-shaped connecting blocks and sinking grooves, and the fourth side edge of the plane frame body is fixedly connected with the fourth side edge of the BL die casting. Through the double-fixing structure, the middle frame and the die casting can be prevented from being separated, the manufacturing difficulty and cost are reduced, and the structural strength and the assembling efficiency are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid crystal display modules, and particularly relates to a backlight unit structure. BACKGROUND

[0002] In the current technical field of medium and large size liquid crystal display modules, as one of the key components of liquid crystal display, the structural design of the backlight unit (BL) directly affects the manufacturing efficiency, performance and reliability of the product. Traditionally, the plastic middle frame of the backlight unit has many limitations. Specifically, the plastic middle frame is difficult to form in the mold forming process, and has high requirements for the precision and processing technology of the mold, which increases the manufacturing cost and time. At the same time, the mechanical properties of the plastic material are relatively limited, which is difficult to meet the demand for high strength of the product, which limits the application range and service life of the liquid crystal module to some extent. In addition, the complex structure of the plastic middle frame also brings inconvenience to the production line assembly, reduces the production efficiency and assembly precision, and affects the overall quality and market competitiveness of the product. Therefore, a new backlight unit structure of medium and large size liquid crystal module is urgently needed to overcome the many defects of the existing plastic middle frame. CONTENT OF THE INVENTION

[0003] The purpose of the present application is to provide a backlight unit structure to solve the many problems caused by the plastic middle frame.

[0004] To achieve the above application purposes, the technical solutions adopted by the present application are as follows:

[0005] The embodiment of the present application provides a backlight unit structure, comprising: a sheet metal middle frame and a BL die casting, the sheet metal middle frame comprises a planar frame body, three sides of the planar frame body are each provided with a sliding buckle extending towards the peripheral side, and an L-shaped connecting block facing away from the BL die casting;

[0006] The three sides of the BL die casting are each provided with a clamping groove in gap cooperation with the sliding buckle, and a sink groove fixedly connected with the L-shaped connecting block;

[0007] The fourth side of the planar frame body is fixedly connected with the fourth side of the BL die casting.

[0008] In some embodiments, the sink groove is provided with a first double-sided adhesive for adhesively fixedly connecting the L-shaped connecting block and the sink groove.

[0009] In some embodiments, the fourth side of the planar frame body and the fourth side of the BL die casting, and the four corners of the planar frame body and the four corners of the BL die casting are all fixedly connected by a second double-sided adhesive.

[0010] In some embodiments, the sheet metal middle frame is made of SUS304 stainless steel, the work hardening state of which is 3 / 4H, and the thickness of the sheet metal middle frame is 0.4 millimeters.

[0011] In some embodiments, the three sides of the planar frame body are further provided with a retaining wall structure.

[0012] Compared with the prior art, the beneficial effects of the embodiments of the application are:

[0013] The backlight unit structure provided by the embodiments of the application replaces the traditional plastic middle frame with a sheet metal middle frame, and then the sheet metal middle frame and the BL die casting have a double fixing structure: (1) the three sides are fixed by being slid into the buckle and the groove; (2) the three sides are further fixed and connected between the L-shaped connecting block and the sink, and the fourth side of the planar frame body is fixedly connected with the fourth side of the BL die casting. Through the above double fixing structure, the middle frame and the die casting can be prevented from being separated, the manufacturing difficulty and cost are reduced, the structural strength and the assembly efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 A front view of a backlight unit structure provided by the embodiments of the application is shown;

[0016] Figure 2 An axonometric view of a backlight unit structure provided by the embodiments of the application is shown;

[0017] Figure 3 A front view of a sheet metal middle frame provided by the embodiments of the application is shown;

[0018] Figure 4 A front view of a sheet metal middle frame provided by the embodiments of the application is shown; Figure 3 An upper right corner part view of the sheet metal middle frame shown;

[0019] Figure 5 An axonometric view of the upper right corner part of the sheet metal middle frame shown; Figure 4 An axonometric view of the upper right corner part of the sheet metal middle frame shown;

[0020] Figure 6 A front view of a BL die casting provided by the embodiments of the application is shown;

[0021] Figure 7 A front view of a BL die casting provided by the embodiments of the application is shown; Figure 6 An axonometric view of the upper right corner part of the BL die casting shown;

[0022] Figure 8 An axonometric view of the upper right corner part of the BL die casting shown; Figure 6Another isometric view of the upper right corner portion of the BL die casting shown.

[0023] Illustration:

[0024] 10, sheet metal middle frame; 11, flat frame body; 12, sliding buckle; 13, L-shaped connecting block; 14, retaining wall structure; 20, BL die casting; 21, clamping groove; 22, sink groove. DETAILED DESCRIPTION

[0025] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In order to illustrate the technical solutions described in the present application, the following will be described by specific embodiments.

[0029] Please refer to Figures 1 to 8 As shown, the embodiment of the present application provides a backlight unit structure, comprising: a sheet metal middle frame 10 and a BL die casting 20, the sheet metal middle frame 10 comprises a flat frame body 11, three sides of the flat frame body 11 are each provided with a sliding buckle 12 extending towards the peripheral side, and an L-shaped connecting block 13 facing away from the BL die casting 20; three sides of the BL die casting 20 are each provided with a clamping groove 21 in gap cooperation with the sliding buckle 12, and a sink groove 22 fixedly connected with the L-shaped connecting block 13; a fourth side of the flat frame body 11 is fixedly connected with a fourth side of the BL die casting 20.

[0030] It should be noted that since the fourth side position exists the module FPC, it is not necessary to set the sliding buckle 12, the sliding buckle 12.

[0031] As an example, the sink groove 22 is provided with a first double-sided adhesive tape for adhesively fixedly connecting the L-shaped connecting block 13 and the sink groove 22.

[0032] As an example, the fourth side of the flat frame body 11 and the fourth side of the BL die casting 20 are fixedly connected by the second double-sided adhesive tape, and the four corners of the flat frame body 11 and the four corners of the BL die casting 20 are fixedly connected by the second double-sided adhesive tape.

[0033] As an example, the sheet metal middle frame 10 is made of SUS304 stainless steel, and the work hardening state is 3 / 4H, and the thickness of the sheet metal middle frame 10 is 0.4mm.

[0034] As an example, the three sides of the flat frame body 11 are also provided with the retaining wall structure 14.

[0035] In summary, the embodiment of the present application provides a backlight unit structure, which replaces the traditional plastic middle frame with the sheet metal middle frame 10, and then the sheet metal middle frame 10 and the BL die casting 20 have a double fixing structure: (1) the three sides are fixedly connected by the sliding buckle 12 and the clamping groove 21; (2) the three sides are also fixedly connected between the L-shaped connecting block 13 and the sink 22, and the fourth side of the flat frame body 11 and the fourth side of the BL die casting 20 are fixedly connected. Through the above double fixing structure, the middle frame and the die casting can be prevented from being separated, the manufacturing difficulty and cost are reduced, the structural strength and assembly efficiency are improved.

[0036] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A backlight unit structure, characterized by, The utility model relates to a kind of metal middle frame and BL die casting, the metal middle frame includes plane frame body, the three sides of the plane frame body are equipped with sliding buckle towards the extension of periphery, and L-shaped connecting block opposite to the BL die casting; Three sides of the BL die casting are equipped with the snap groove of gap cooperation with the sliding buckle, and the sunken groove fixedly connected with the L-shaped connecting block; The fourth side of the plane frame body is fixedly connected with the fourth side of the BL die casting. First double-sided adhesive is arranged in the sunken groove for bonding and fixing the L-shaped connecting block and the sunken groove.

2. A backlight unit structure according to claim 1, wherein The fourth side of the plane frame body and the fourth side of the BL die casting are fixedly connected by second double-sided adhesive.

3. A backlight unit structure according to claim 1, wherein, The metal middle frame is made of SUS304 stainless steel, and the work-hardened state is 3 / 4H, and the thickness of the metal middle frame is 0.4mm.

4. The backlight unit structure of claim 1, wherein, The three sides of the plane frame body are also provided with a retaining wall structure.

5. The backlight unit structure of claim 1, wherein, ​

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